/* roulang page: index */
:root {
    --bg-deep: #060B18;
    --bg-main: #0B1226;
    --bg-elevated: #101A33;
    --surface-glass: rgba(17, 25, 48, 0.62);
    --stroke-glass: rgba(255, 255, 255, 0.09);
    --primary: #2E6BE6;
    --primary-deep: #1b3f8f;
    --accent-cyan: #33E0D6;
    --accent-orange: #FF6A3D;
    --text-title: #F4F7FF;
    --text-body: #C3CDE3;
    --text-muted: #7C89A8;
    --radius-lg: 20px;
    --radius-md: 12px;
    --header-h: 76px;
    --shadow-card: 0 12px 32px rgba(3, 8, 22, .35);
    --shadow-cyan: 0 12px 32px rgba(51, 224, 214, .18);
    --ease: 220ms cubic-bezier(.25, .1, .25, 1);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  }

  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg-main);
    color: var(--text-body);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    letter-spacing: .01em;
    -webkit-font-smoothing: antialiased;
  }

  body.no-scroll {
    overflow: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
      radial-gradient(circle at 18% -8%, rgba(46, 107, 230, .18), transparent 28%),
      radial-gradient(circle at 92% 15%, rgba(51, 224, 214, .07), transparent 26%),
      var(--bg-main);
  }

  h1, h2, h3, h4, h5 {
    color: var(--text-title);
    line-height: 1.25;
    font-weight: 700;
  }

  p {
    color: var(--text-body);
  }

  ul, ol, li {
    list-style: none;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color var(--ease);
  }

  img {
    max-width: 100%;
    display: block;
    border-radius: inherit;
  }

  button,
  input,
  textarea {
    font-family: inherit;
    font-size: inherit;
  }

  button {
    border: none;
    cursor: pointer;
    background: transparent;
  }

  .grid-container {
    max-width: 1360px;
    padding-left: 32px;
    padding-right: 32px;
  }

  .skip-link {
    position: absolute;
    left: 16px;
    top: -80px;
    z-index: 999;
    background: var(--primary);
    color: #fff;
    padding: 10px 18px;
    border-radius: 10px;
    transition: top var(--ease);
  }

  .skip-link:focus {
    top: 16px;
    color: #fff;
  }

  :focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 3px;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation: none !important;
      transition: none !important;
      scroll-behavior: auto !important;
    }
  }

  /* ========== Buttons ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 44px;
    padding: 11px 24px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    border: 1px solid transparent;
    white-space: nowrap;
    transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
  }

  .btn-primary {
    background: linear-gradient(135deg, #2E6BE6, #4C62F0);
    color: #fff;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .06), 0 8px 30px rgba(46, 107, 230, .35);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(46, 107, 230, .55);
    color: #fff;
  }

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-orange {
    background: linear-gradient(135deg, #FF6A3D, #FF8A3D);
    color: #fff;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .08), 0 8px 30px rgba(255, 106, 61, .36);
  }

  .btn-orange:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 14px 44px rgba(255, 106, 61, .5);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, .04);
    border-color: rgba(255, 255, 255, .09);
    color: var(--text-title);
    backdrop-filter: blur(14px) saturate(130%);
    -webkit-backdrop-filter: blur(14px) saturate(130%);
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, .08);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
  }

  .btn-lg {
    padding: 16px 30px;
    font-size: 16px;
    min-height: 52px;
  }

  .btn-sm {
    padding: 9px 18px;
    min-height: 40px;
    font-size: 13px;
  }

  /* ========== Tags Chips ========== */
  .soft-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border-radius: 999px;
    padding: 6px 13px;
    font-size: 12px;
    color: var(--accent-cyan);
    background: rgba(51, 224, 214, .09);
    border: 1px solid rgba(51, 224, 214, .12);
  }

  .soft-chip::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
  }

  .orange-chip {
    color: var(--accent-orange);
    background: rgba(255, 106, 61, .1);
    border-color: rgba(255, 106, 61, .16);
  }

  .orange-chip::before {
    background: var(--accent-orange);
    box-shadow: 0 0 10px rgba(255, 106, 61, .6);
  }

  .text-muted {
    color: var(--text-muted) !important;
  }

  /* ========== Header ========== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 80;
    height: var(--header-h);
    display: flex;
    align-items: center;
    background: rgba(6, 11, 24, .18);
    border-bottom: 1px solid transparent;
    transition: background var(--ease), border-color var(--ease), backdrop-filter var(--ease), box-shadow var(--ease);
    backdrop-filter: blur(8px) saturate(120%);
    -webkit-backdrop-filter: blur(8px) saturate(120%);
  }

  .site-header.scrolled {
    background: rgba(6, 11, 24, .92);
    border-bottom-color: rgba(255, 255, 255, .06);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
  }

  .header-inner {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    gap: 24px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    margin-right: 18px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    background: conic-gradient(from 220deg, var(--primary), var(--accent-cyan), var(--accent-orange), var(--primary));
    box-shadow: 0 0 20px rgba(46, 107, 230, .35);
  }

  .brand-mark svg {
    width: 21px;
    height: 21px;
    display: block;
  }

  .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
  }

  .brand-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-title);
    letter-spacing: .04em;
  }

  .brand-sub {
    font-size: 11px;
    color: var(--accent-cyan);
    letter-spacing: .18em;
  }

  .site-nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
    min-height: var(--header-h);
  }

  .nav-list {
    display: flex;
    align-items: center;
    gap: 34px;
  }

  .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    height: var(--header-h);
    font-size: 15px;
    color: var(--text-body);
    font-weight: 500;
    transition: color var(--ease);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 16px;
    width: 18px;
    height: 3px;
    border-radius: 4px;
    background: var(--accent-cyan);
    opacity: 0;
    transform: translateX(-50%) scaleX(.4);
    transition: opacity var(--ease), transform var(--ease);
  }

  .nav-link:hover,
  .nav-link.is-active {
    color: var(--text-title);
  }

  .nav-link.is-active::after {
    opacity: 1;
    transform: translateX(-50%) scaleX(1);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    flex-shrink: 0;
  }

  .nav-burger {
    display: none;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .08);
    align-items: center;
    justify-content: center;
    gap: 5px;
    flex-direction: column;
  }

  .nav-burger span {
    width: 20px;
    height: 2px;
    border-radius: 4px;
    background: var(--text-title);
    display: block;
  }

  .nav-scrim {
    position: fixed;
    inset: 0;
    z-index: 95;
    background: rgba(3, 6, 14, .68);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--ease), visibility var(--ease);
  }

  .nav-scrim.active {
    opacity: 1;
    visibility: visible;
  }

  .mobile-nav {
    position: fixed;
    top: 0;
    right: -340px;
    width: 330px;
    max-width: 86vw;
    height: 100vh;
    z-index: 99;
    background: rgba(6, 11, 24, .92);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    border-left: 1px solid rgba(255, 255, 255, .08);
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: right var(--ease);
    box-shadow: -20px 0 50px rgba(0, 0, 0, .35);
  }

  .mobile-nav.open {
    right: 0;
  }

  .mobile-nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
  }

  .mobile-close {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .06);
    display: grid;
    place-items: center;
    color: var(--text-title);
    font-size: 19px;
  }

  .mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
  }

  .mobile-nav-list a {
    display: flex;
    align-items: center;
    min-height: 52px;
    padding: 0 14px;
    border-radius: 14px;
    color: var(--text-body);
    font-size: 17px;
  }

  .mobile-nav-list a.is-active {
    color: var(--text-title);
    background: rgba(46, 107, 230, .14);
  }

  .mobile-nav-footer {
    padding-top: 20px;
    border-top: 1px solid var(--stroke-glass);
    font-size: 12px;
    color: var(--text-muted);
  }

  /* ========== Hero ========== */
  .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 44px) 0 96px;
    overflow: hidden;
    isolation: isolate;
    background: var(--bg-deep);
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
  }

  .hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(90deg, rgba(6, 11, 24, .96) 0%, rgba(6, 11, 24, .78) 34%, rgba(6, 11, 24, .28) 68%, rgba(6, 11, 24, .32) 100%),
      linear-gradient(0deg, var(--bg-main) 0%, rgba(6, 11, 24, .05) 45%, rgba(6, 11, 24, .12) 100%);
  }

  .hero-copy {
    position: relative;
    z-index: 2;
    max-width: 780px;
    padding-left: 4px;
  }

  .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: .08em;
    background: rgba(51, 224, 214, .08);
    border: 1px solid rgba(51, 224, 214, .12);
    border-radius: 999px;
    padding: 8px 18px;
    margin-bottom: 30px;
  }

  .pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-orange);
    box-shadow: 0 0 0 0 rgba(255, 106, 61, .45);
    animation: pulseDot 2s ease-out infinite;
  }

  @keyframes pulseDot {
    0% {
      box-shadow: 0 0 0 0 rgba(255, 106, 61, .45);
    }
    70% {
      box-shadow: 0 0 0 12px rgba(255, 106, 61, 0);
    }
    100% {
      box-shadow: 0 0 0 0 rgba(255, 106, 61, 0);
    }
  }

  .hero-title {
    font-size: clamp(2.3rem, 5vw + .8rem, 4.4rem);
    font-weight: 800;
    letter-spacing: -.02em;
    max-width: 850px;
    text-shadow: 0 12px 32px rgba(0, 0, 0, .42);
    margin-bottom: 24px;
    color: #fff;
  }

  .hero-title mark {
    color: var(--accent-orange);
    background: none;
    font-weight: inherit;
  }

  .hero-lead {
    font-size: clamp(15px, 1vw + .7rem, 18px);
    color: rgba(255, 255, 255, .85);
    line-height: 1.9;
    max-width: 600px;
    margin-bottom: 38px;
    text-shadow: 0 4px 18px rgba(0, 0, 0, .24);
  }

  .hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 30px;
  }

  .hero-note {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, .72);
  }

  .hero-note svg {
    width: 18px;
    height: 18px;
    stroke: var(--accent-cyan);
    flex-shrink: 0;
  }

  .scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 34px;
    height: 56px;
    display: block;
    border: 2px solid rgba(255, 255, 255, .5);
    border-radius: 999px;
    z-index: 4;
    opacity: .75;
    transition: opacity var(--ease);
  }

  .scroll-hint::before {
    content: "";
    position: absolute;
    width: 4px;
    height: 10px;
    top: 9px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-cyan);
    border-radius: 4px;
    animation: scrollHint 1.8s ease-in-out infinite;
  }

  @keyframes scrollHint {
    0%, 100% {
      transform: translate(-50%, 0);
      opacity: .6;
    }
    50% {
      transform: translate(-50%, 14px);
      opacity: 1;
    }
  }

  /* ========== Common Section ========== */
  .section {
    padding: 100px 0;
  }

  .section-tight {
    padding-bottom: 70px;
  }

  .section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    margin-bottom: 44px;
  }

  .section-title {
    font-size: clamp(1.72rem, 2.4vw + .5rem, 2.6rem);
    font-weight: 800;
    letter-spacing: -.01em;
    position: relative;
    padding-left: 17px;
  }

  .section-title::before {
    content: "";
    position: absolute;
    top: .2em;
    left: 0;
    bottom: .2em;
    width: 5px;
    border-radius: 6px;
    background: linear-gradient(180deg, var(--accent-cyan), var(--primary));
    box-shadow: 0 0 18px rgba(51, 224, 214, .6);
  }

  .section-desc {
    color: var(--text-muted);
    max-width: 480px;
    text-align: right;
    font-size: 14px;
    line-height: 1.7;
  }

  .section-head-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
  }

  /* ========== Rail ========== */
  .rail-wrap {
    position: relative;
  }

  .rail-scroll {
    display: flex;
    gap: 22px;
    overflow-x: auto;
    padding: 10px 4px 28px 4px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .rail-scroll::-webkit-scrollbar {
    display: none;
  }

  .rail-item {
    flex: 0 0 318px;
    max-width: 80vw;
    scroll-snap-align: start;
  }

  .video-card {
    position: relative;
    background: var(--bg-elevated);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .05);
    box-shadow: var(--shadow-card);
    transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  }

  .video-card:hover {
    transform: translateY(-6px);
    border-color: rgba(51, 224, 214, .28);
    box-shadow: var(--shadow-card), var(--shadow-cyan);
  }

  .video-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #1b2850, #0B1226);
  }

  .video-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms ease-out;
  }

  .video-card:hover .video-media img {
    transform: scale(1.05);
  }

  .video-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(6, 11, 24, .84) 7%, transparent 45%);
  }

  .video-status {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(6, 11, 24, .68);
    border: 1px solid rgba(255, 255, 255, .1);
    color: var(--text-title);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .video-status i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-orange);
  }

  .video-status.status-live i {
    background: var(--accent-orange);
    box-shadow: 0 0 10px rgba(255, 106, 61, .7);
  }

  .video-status.status-cy i {
    background: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(51, 224, 214, .7);
  }

  .video-count {
    position: absolute;
    right: 14px;
    bottom: 14px;
    z-index: 2;
    font-size: 12px;
    color: rgba(255, 255, 255, .85);
    background: rgba(6, 11, 24, .58);
    border-radius: 8px;
    padding: 5px 10px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  .video-body {
    padding: 18px;
  }

  .video-cat {
    display: block;
    font-size: 12px;
    color: var(--accent-cyan);
    margin-bottom: 9px;
  }

  .video-body h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    min-height: 51px;
    margin-bottom: 12px;
  }

  .video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
  }

  .video-meta svg {
    width: 13px;
    height: 13px;
    fill: none;
    stroke: var(--text-muted);
    vertical-align: -2px;
  }

  .rail-arrows {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .rail-arrow {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    color: var(--text-title);
    transition: all var(--ease);
  }

  .rail-arrow:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
  }

  /* ========== Hot / Heat ========== */
  .section-heat {
    background: linear-gradient(180deg, transparent 0%, rgba(9, 16, 35, .78) 50%, transparent 100%);
    padding-top: 120px;
    padding-bottom: 120px;
  }

  .heat-grid {
    gap: 24px;
  }

  .heat-grid .cell {
    display: flex;
  }

  .hot-feature {
    position: relative;
    width: 100%;
    min-height: 520px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .08);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: flex-end;
    isolation: isolate;
    background-color: #0B1226;
  }

  .hot-feature-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: url('/assets/images/coverpic/cover-5.webp');
    background-size: cover;
    background-position: center;
    transition: transform 600ms ease-out;
  }

  .hot-feature:hover .hot-feature-bg {
    transform: scale(1.04);
  }

  .hot-feature::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(200deg, rgba(6, 11, 24, .26), rgba(6, 11, 24, .12) 24%, rgba(6, 11, 24, .94) 90%);
  }

  .hot-feature-content {
    width: 100%;
    padding: 34px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  .hot-feature-content .soft-chip {
    margin-bottom: 14px;
  }

  .hot-feature-content h3 {
    font-size: clamp(1.5rem, 1.8vw + .8rem, 2.2rem);
    max-width: 500px;
    margin-bottom: 12px;
    color: #fff;
  }

  .hot-feature-content p {
    max-width: 520px;
    color: rgba(255, 255, 255, .82);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 22px;
  }

  .hot-feature-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
  }

  .hot-feature-actions .btn-ghost {
    background: rgba(15, 24, 50, .62);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }

  .hot-rank {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: rgba(15, 23, 45, .6);
    border: 1px solid rgba(255, 255, 255, .07);
    backdrop-filter: blur(12px) saturate(120%);
    -webkit-backdrop-filter: blur(12px) saturate(120%);
    border-radius: 24px;
    padding: 24px 10px 16px;
    box-shadow: var(--shadow-card);
  }

  .hot-rank-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 18px 18px;
  }

  .hot-rank-header h4 {
    font-size: 17px;
    font-weight: 800;
  }

  .hot-rank-list {
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .rank-item {
    padding: 12px 16px;
    border-radius: 16px;
    display: grid;
    grid-template-columns: 38px 1fr;
    gap: 12px;
    align-items: center;
    transition: background var(--ease);
  }

  .rank-item:hover {
    background: rgba(255, 255, 255, .035);
  }

  .rank-num {
    font-size: 26px;
    font-weight: 600;
    color: rgba(255, 255, 255, .3);
    font-variant-numeric: tabular-nums;
    text-align: center;
  }

  .rank-item:first-child .rank-num {
    color: var(--accent-orange);
  }

  .rank-item:first-child {
    background: rgba(255, 106, 61, .05);
  }

  .rank-title {
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-body);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: color var(--ease);
  }

  .rank-item:hover .rank-title {
    color: var(--text-title);
  }

  .rank-meta {
    display: block;
    margin-top: 7px;
    font-size: 12px;
    color: var(--text-muted);
  }

  /* ========== Story / Category ========== */
  .story-grid {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: 24px;
  }

  .story-left,
  .story-right {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 0;
  }

  .entry-card {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, .07);
    background: var(--bg-elevated);
    box-shadow: var(--shadow-card);
    display: flex;
    transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  }

  .entry-card:hover {
    transform: translateY(-5px);
    border-color: rgba(51, 224, 214, .3);
    box-shadow: var(--shadow-card), var(--shadow-cyan);
  }

  .entry-main {
    min-height: 460px;
    flex-direction: column;
    justify-content: flex-end;
  }

  .entry-media {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-size: cover;
    background-position: center;
  }

  .entry-main::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 11, 24, .15), transparent 26%, rgba(6, 11, 24, .97));
    z-index: 1;
  }

  .entry-info {
    position: relative;
    z-index: 2;
    padding: 0 30px 30px;
  }

  .entry-card .soft-chip {
    margin-bottom: 16px;
  }

  .entry-info h3 {
    font-size: 24px;
    margin-bottom: 10px;
  }

  .entry-info p {
    color: rgba(255, 255, 255, .78);
    font-size: 14px;
    line-height: 1.75;
    max-width: 520px;
    margin-bottom: 20px;
  }

  .entry-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--accent-cyan);
    font-size: 14px;
    font-weight: 600;
    transition: gap var(--ease), color var(--ease);
  }

  .entry-card:hover .entry-link {
    gap: 13px;
    color: var(--text-title);
  }

  .entry-compact {
    min-height: 200px;
    align-items: center;
    background: var(--surface-glass);
  }

  .entry-compact .entry-thumb {
    position: absolute;
    inset: 0;
    opacity: .28;
    background-size: cover;
    background-position: center;
    z-index: 0;
  }

  .entry-compact::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(6, 11, 24, .92), rgba(9, 17, 37, .48));
    z-index: 1;
  }

  .entry-compact .entry-info {
    padding: 28px 28px 26px;
    max-width: 430px;
  }

  /* ========== News / CMS ========== */
  .news-section {
    background: radial-gradient(ellipse at 50% 108%, rgba(46, 107, 230, .16), transparent 50%);
  }

  .news-board {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 28px;
  }

  .news-feature {
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .07);
    background: var(--surface-glass);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    transition: border-color var(--ease);
  }

  .news-feature:hover {
    border-color: rgba(51, 224, 214, .28);
  }

  .news-feature-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-image: url('/assets/images/coverpic/cover-10.png');
    background-size: cover;
    background-position: center;
  }

  .news-feature-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent, rgba(6, 11, 24, .72));
  }

  .news-feature-body {
    padding: 26px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .news-feature-body .soft-chip {
    align-self: flex-start;
    margin-bottom: 14px;
  }

  .news-feature-body h3 {
    font-size: 22px;
    line-height: 1.45;
    margin-bottom: 12px;
  }

  .news-feature-body h3 a {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
  }

  .news-feature-body h3 a:hover {
    color: var(--accent-cyan);
  }

  .news-feature-body p {
    color: var(--text-muted);
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }

  .news-feature-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 22px;
    font-size: 13px;
    color: var(--text-muted);
  }

  .news-strip {
    display: flex;
    flex-direction: column;
    background: rgba(15, 23, 45, .52);
    border: 1px solid rgba(255, 255, 255, .06);
    border-radius: 24px;
    padding: 12px 6px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .news-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
    padding: 17px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .055);
    transition: background var(--ease);
  }

  .news-row:last-child {
    border-bottom: none;
  }

  .news-row:hover {
    background: rgba(255, 255, 255, .033);
  }

  .news-row-title {
    font-size: 15px;
    color: var(--text-title);
    font-weight: 600;
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .news-row-title:hover {
    color: var(--accent-cyan);
  }

  .news-row-summary {
    margin-top: 7px;
    font-size: 13px;
    color: var(--text-muted);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
  }

  .news-row-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
    justify-content: flex-end;
  }

  .news-row-arrow {
    color: var(--accent-cyan);
    font-size: 16px;
  }

  .news-empty {
    border: 1px dashed rgba(255, 255, 255, .12);
    border-radius: 18px;
    padding: 48px 28px;
    text-align: center;
    background: rgba(255, 255, 255, .03);
  }

  .news-empty p {
    color: var(--text-muted);
  }

  /* ========== CTA ========== */
  .cta-section {
    position: relative;
    padding: 110px 0 130px;
  }

  .cta-panel {
    position: relative;
    overflow: hidden;
    border-radius: 34px;
    border: 1px solid rgba(255, 255, 255, .12);
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center 30%;
    box-shadow: var(--shadow-card);
    padding: 72px 56px;
    display: flex;
    align-items: center;
    min-height: 330px;
  }

  .cta-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(95deg, rgba(6, 11, 24, .96), rgba(6, 11, 24, .76) 48%, rgba(10, 20, 43, .5)),
      linear-gradient(180deg, rgba(6, 11, 24, .25), rgba(6, 11, 24, .84));
  }

  .cta-content {
    position: relative;
    z-index: 2;
    max-width: 670px;
    width: 100%;
  }

  .cta-content h2 {
    font-size: clamp(1.9rem, 2.6vw + .5rem, 2.9rem);
    margin-bottom: 15px;
  }

  .cta-content > p {
    color: rgba(255, 255, 255, .82);
    margin-bottom: 8px;
    max-width: 540px;
  }

  .cta-form {
    display: flex;
    align-items: flex-end;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 32px;
  }

  .form-field {
    flex: 1;
    min-width: 260px;
  }

  .form-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 9px;
    letter-spacing: .02em;
  }

  .form-field input {
    display: block;
    width: 100%;
    min-height: 52px;
    border-radius: 13px;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .14);
    padding: 0 18px;
    color: var(--text-title);
    outline: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: border-color var(--ease), box-shadow var(--ease);
  }

  .form-field input::placeholder {
    color: var(--text-muted);
  }

  .form-field input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 4px rgba(51, 224, 214, .16);
  }

  .cta-small {
    margin-top: 15px;
    color: var(--text-muted);
    font-size: 13px;
  }

  /* ========== FAQ ========== */
  .faq-section {
    background: linear-gradient(180deg, transparent, rgba(12, 20, 41, .7) 40%, transparent);
    padding-top: 90px;
    padding-bottom: 120px;
  }

  .faq-wrap {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    max-width: 1080px;
  }

  .faq-item {
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--stroke-glass);
    border-radius: 18px;
    overflow: hidden;
    transition: background var(--ease), border-color var(--ease);
  }

  .faq-item:hover {
    border-color: rgba(51, 224, 214, .22);
    background: rgba(255, 255, 255, .05);
  }

  .faq-item[open] {
    border-color: rgba(51, 224, 214, .34);
    background: rgba(255, 255, 255, .055);
  }

  .faq-item summary {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-title);
    cursor: pointer;
    min-height: 60px;
    list-style: none;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::before {
    content: "";
    width: 4px;
    height: 18px;
    border-radius: 5px;
    background: var(--text-muted);
    flex-shrink: 0;
    transition: background var(--ease);
  }

  .faq-item[open] summary::before,
  .faq-item summary:hover::before {
    background: var(--accent-orange);
  }

  .faq-item summary::after {
    content: "+";
    margin-left: auto;
    font-size: 21px;
    font-weight: 400;
    color: var(--accent-cyan);
    transition: transform var(--ease);
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
  }

  .faq-item .answer {
    padding: 0 24px 20px 42px;
  }

  .faq-item .answer p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
  }

  /* ========== Footer ========== */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, .06);
    padding: 92px 0 34px;
    margin-top: 40px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }

  .footer-logo .brand-name {
    font-size: 22px;
  }

  .footer-tagline {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.85;
    max-width: 340px;
    margin: 10px 0 26px;
  }

  .footer-social {
    display: flex;
    gap: 12px;
  }

  .footer-social a {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 11px;
    background: rgba(255, 255, 255, .045);
    border: 1px solid rgba(255, 255, 255, .08);
    color: var(--text-muted);
    transition: all var(--ease);
  }

  .footer-social a:hover {
    color: var(--accent-cyan);
    border-color: rgba(51, 224, 214, .3);
    transform: translateY(-2px);
  }

  .footer-social svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
  }

  .footer-col-title {
    font-size: 14px;
    color: var(--text-title);
    font-weight: 700;
    padding-bottom: 15px;
    margin-bottom: 18px;
    position: relative;
  }

  .footer-col-title::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 3px;
    border-radius: 5px;
    background: var(--accent-cyan);
    opacity: .5;
  }

  .footer-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-list li a {
    font-size: 14px;
    color: var(--text-muted);
  }

  .footer-list li a:hover {
    color: var(--accent-cyan);
  }

  .footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
  }

  .footer-contact-list span {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    font-size: 14px;
    color: var(--text-muted);
  }

  .footer-bottom {
    margin-top: 66px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, .05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-muted);
  }

  .footer-bottom .legal {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  .footer-bottom a {
    color: var(--text-muted);
  }

  .footer-bottom a:hover {
    color: var(--accent-cyan);
  }

  /* ========== Responsive ========== */
  @media screen and (max-width: 1023px) {
    .site-nav {
      display: none;
    }

    .header-actions .btn-header-desktop {
      display: none;
    }

    .nav-burger {
      display: flex;
    }

    .brand-name {
      font-size: 19px;
    }

    .story-grid,
    .news-board,
    .faq-wrap {
      grid-template-columns: 1fr;
    }

    .story-left,
    .story-right {
      gap: 18px;
    }

    .cta-panel {
      padding: 56px 38px;
    }

    .section {
      padding: 78px 0;
    }

    .section-heat {
      padding-top: 96px;
      padding-bottom: 96px;
    }

    .hot-feature {
      min-height: 440px;
    }
  }

  @media screen and (max-width: 767px) {
    .grid-container {
      padding-left: 20px;
      padding-right: 20px;
    }

    .section {
      padding: 56px 0;
    }

    .section-head {
      display: block;
      margin-bottom: 28px;
    }

    .section-desc {
      text-align: left;
      margin-top: 10px;
    }

    .section-title {
      font-size: 1.7rem;
    }

    .hero {
      padding-top: calc(var(--header-h) + 36px);
      padding-bottom: 72px;
      min-height: auto;
    }

    .hero-copy {
      padding-left: 0;
    }

    .hero-title {
      font-size: clamp(2.25rem, 8vw, 3.25rem);
    }

    .hero-lead {
      margin-bottom: 28px;
    }

    .hero-cta .btn {
      width: 100%;
    }

    .scroll-hint {
      display: none;
    }

    .rail-item {
      flex-basis: 274px;
    }

    .video-body h3 {
      font-size: 15px;
      min-height: 45px;
    }

    .heat-grid .cell {
      min-width: 0;
    }

    .hot-feature-content {
      padding: 24px 20px;
    }

    .hot-feature {
      min-height: 360px;
    }

    .hot-feature-content h3 {
      font-size: 1.6rem;
    }

    .rank-item {
      padding: 10px 10px;
    }

    .rank-num {
      font-size: 20px;
    }

    .hot-rank {
      padding: 18px 4px 10px;
    }

    .entry-main {
      min-height: 340px;
    }

    .entry-info {
      padding: 0 20px 22px;
    }

    .entry-info h3 {
      font-size: 20px;
    }

    .entry-compact .entry-info {
      padding: 20px;
    }

    .news-feature-body {
      padding: 22px 18px;
    }

    .news-feature-body h3 {
      font-size: 18px;
    }

    .news-row {
      grid-template-columns: 1fr;
      gap: 8px;
    }

    .news-row-meta {
      justify-content: flex-start;
    }

    .cta-panel {
      padding: 42px 24px;
      border-radius: 24px;
    }

    .cta-form {
      width: 100%;
    }

    .cta-form .btn {
      width: 100%;
    }

    .faq-wrap {
      grid-template-columns: 1fr;
    }

    .site-footer {
      padding-top: 64px;
      padding-bottom: 26px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  @media screen and (max-width: 520px) {
    .header-actions {
      gap: 8px;
    }

    .header-cta {
      display: none;
    }

    .rail-scroll {
      padding-bottom: 18px;
    }

    .rail-item {
      flex-basis: 82vw;
    }

    .video-body h3 {
      min-height: 0;
    }

    .hero-kicker {
      font-size: 12px;
      padding: 6px 14px;
      margin-bottom: 20px;
    }
  }

/* roulang page: article */
:root {
            --bg-deep: #060B18;
            --bg-main: #0B1226;
            --bg-elevated: #101A33;
            --surface-glass: rgba(17, 25, 48, 0.62);
            --stroke-glass: rgba(255, 255, 255, 0.09);
            --primary: #2E6BE6;
            --primary-gradient: linear-gradient(135deg, #2E6BE6, #4C62F0);
            --accent-cyan: #33E0D6;
            --accent-orange: #FF6A3D;
            --accent-orange-gradient: linear-gradient(135deg, #FF6A3D, #FF9460);
            --text-title: #F4F7FF;
            --text-body: #C3CDE3;
            --text-muted: #7C89A8;
            --stroke: rgba(255, 255, 255, 0.08);
            --radius-card: 20px;
            --radius-small: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 32px rgba(3, 8, 22, 0.35);
            --shadow-float: 0 18px 42px rgba(3, 8, 22, 0.46);
            --ease: 0.24s ease-out;
            --container-max: 1440px;
            --section-space: 100px;
            color-scheme: dark;
        }

        @media (max-width: 1024px) {
            :root {
                --section-space: 76px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --section-space: 56px;
            }
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            background-color: var(--bg-deep);
            background-image:
                radial-gradient(circle at 18% -8%, rgba(46, 107, 230, 0.2), transparent 34%),
                radial-gradient(circle at 88% 4%, rgba(51, 224, 214, 0.08), transparent 24%),
                linear-gradient(180deg, var(--bg-main), var(--bg-deep) 60%);
            color: var(--text-body);
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: var(--container-max);
        }

        h1,
        h2,
        h3,
        h4 {
            margin: 0 0 0.5em;
            color: var(--text-title);
            font-weight: 700;
            line-height: 1.22;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: clamp(1.75rem, 2.6vw + 0.5rem, 2.75rem);
        }

        h3 {
            font-size: 1.3rem;
        }

        p {
            margin: 0 0 1em;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-weight: 600;
            border: 1px solid transparent;
            border-radius: var(--radius-pill);
            padding: 13px 26px;
            font-size: 0.985rem;
            line-height: 1.3;
            cursor: pointer;
            transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background-color var(--ease);
            min-height: 48px;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 8px 32px rgba(46, 107, 230, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 14px 38px rgba(46, 107, 230, 0.5);
        }

        .btn-accent {
            background: var(--accent-orange-gradient);
            color: #fff;
            box-shadow: 0 6px 30px rgba(255, 106, 61, 0.35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 106, 61, 0.46);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-title);
            border: 1px solid rgba(255, 255, 255, 0.09);
            box-shadow: none;
        }

        .btn-ghost:hover {
            border-color: rgba(51, 224, 214, 0.7);
            color: var(--accent-cyan);
            transform: translateY(-1px);
        }

        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px dashed var(--accent-cyan);
            outline-offset: 3px;
        }

        .btn-block {
            width: 100%;
        }

        .section-space {
            padding: var(--section-space) 0;
        }

        .section-heading {
            margin-bottom: 34px;
        }

        .section-heading span {
            display: inline-block;
            color: var(--accent-cyan);
            font-size: 0.875rem;
            letter-spacing: 0.12em;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .section-heading h2 {
            margin-bottom: 8px;
        }

        .section-heading p {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0;
        }

        .header-flex {
            display: flex;
            align-items: center;
            gap: 18px;
            min-height: 72px;
            padding: 10px 0;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 24, 0.52);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid transparent;
            transition: background-color 0.25s ease, border-color 0.25s ease;
        }

        .site-header.is-scrolled {
            background: rgba(6, 11, 24, 0.93);
            border-bottom-color: rgba(255, 255, 255, 0.07);
        }

        .brand-wrap {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(145deg, rgba(46, 107, 230, 0.3), rgba(51, 224, 214, 0.08));
            border: 1px solid rgba(255, 255, 255, 0.1);
            flex-shrink: 0;
        }

        .brand-mark svg {
            width: 26px;
            height: 26px;
            display: block;
        }

        .brand-name {
            color: var(--text-title);
            font-size: 1.18rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1;
        }

        .brand-sub {
            color: var(--text-muted);
            font-size: 0.78rem;
            border-left: 1px solid rgba(255, 255, 255, 0.12);
            padding-left: 10px;
            margin-left: 2px;
        }

        .site-nav {
            display: flex;
            justify-content: center;
            flex: 1 1 auto;
        }

        .nav-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 10px 18px;
            color: var(--text-body);
            font-size: 0.955rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            position: relative;
            transition: color 0.2s ease, background-color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            min-height: 44px;
        }

        .nav-link:hover {
            color: var(--text-title);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.is-active {
            color: var(--text-title);
        }

        .nav-link.is-active::after {
            content: "";
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(51, 224, 214, 0.8);
        }

        .header-action {
            display: flex;
            justify-content: flex-end;
            flex-shrink: 0;
        }

        .btn-header-cta {
            min-height: 42px;
            padding: 10px 22px;
            font-size: 0.93rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-title);
            border-radius: var(--radius-pill);
        }

        .btn-header-cta:hover {
            border-color: rgba(51, 224, 214, 0.72);
            color: var(--accent-cyan);
            transform: none;
        }

        @media (max-width: 1024px) {
            .site-nav {
                order: 5;
                flex-basis: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                margin-top: 4px;
                scrollbar-width: none;
            }

            .site-nav::-webkit-scrollbar {
                display: none;
            }

            .nav-list {
                width: max-content;
                min-width: 100%;
                gap: 2px;
            }

            .brand-sub {
                display: none;
            }
        }

        @media (max-width: 560px) {
            .header-flex {
                flex-wrap: wrap;
                gap: 0;
            }

            .brand-wrap {
                margin-right: auto;
            }

            .header-action .btn-header-cta {
                padding: 8px 14px;
                font-size: 0.85rem;
                min-height: 38px;
            }

            .nav-link {
                padding: 9px 12px;
                font-size: 0.92rem;
                min-height: 38px;
            }
        }

        .page-top {
            position: relative;
        }

        .article-masthead {
            position: relative;
            overflow: hidden;
            padding: 76px 0 54px;
            background-color: var(--bg-main);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .article-masthead::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background:
                linear-gradient(180deg, rgba(6, 11, 24, 0.25) 0%, rgba(11, 18, 38, 0.98) 100%),
                url('/assets/images/backpic/back-1.png') center 22% / cover no-repeat;
        }

        .article-masthead::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background:
                radial-gradient(circle at 16% 30%, rgba(46, 107, 230, 0.32), transparent 30%),
                radial-gradient(circle at 80% 20%, rgba(51, 224, 214, 0.12), transparent 22%),
                linear-gradient(90deg, rgba(6, 11, 24, 0.7), rgba(6, 11, 24, 0.2));
        }

        .article-masthead .grid-container {
            position: relative;
            z-index: 2;
        }

        .article-masthead-inner {
            max-width: 860px;
            margin: 0 auto;
        }

        .bread-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin: 0 0 18px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .bread-line a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

        .bread-line a:hover {
            color: var(--accent-cyan);
        }

        .bread-line .sep {
            display: inline-flex;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
        }

        .bread-line .current {
            color: var(--text-body);
        }

        .article-title {
            font-size: clamp(1.96rem, 3.4vw + 0.7rem, 3.4rem);
            margin-bottom: 24px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 22px;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 4px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-item .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent-cyan);
            display: inline-block;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            background: rgba(51, 224, 214, 0.08);
            border: 1px solid rgba(51, 224, 214, 0.12);
            border-radius: 999px;
            color: var(--accent-cyan);
            font-size: 0.85rem;
            line-height: 1.5;
        }

        .article-main {
            padding: 62px 0 var(--section-space);
            position: relative;
        }

        .article-body-panel {
            background: rgba(11, 18, 38, 0.58);
            border: 1px solid rgba(255, 255, 255, 0.075);
            border-radius: 28px;
            padding: clamp(28px, 5vw, 52px);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .article-index-cap {
            font-size: 0.78rem;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--accent-orange);
            font-weight: 700;
            margin-bottom: 28px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .article-index-cap::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--accent-orange);
        }

        .rich-content {
            color: var(--text-body);
            font-size: 1.075rem;
            line-height: 1.88;
            word-break: break-word;
        }

        .rich-content h2 {
            font-size: 1.8rem;
            color: var(--text-title);
            margin-top: 1.65em;
            margin-bottom: 0.7em;
        }

        .rich-content h3 {
            font-size: 1.32rem;
            color: var(--text-title);
            margin-top: 1.5em;
        }

        .rich-content h4 {
            font-size: 1.12rem;
            color: var(--text-title);
            margin-top: 1.3em;
        }

        .rich-content p {
            margin-bottom: 1.35em;
        }

        .rich-content ul,
        .rich-content ol {
            margin: 0 0 1.4em 1.2em;
            padding-left: 0.5em;
        }

        .rich-content li {
            margin-bottom: 0.45em;
        }

        .rich-content ul li::marker {
            color: var(--accent-cyan);
        }

        .rich-content ol li::marker {
            color: var(--accent-orange);
        }

        .rich-content blockquote {
            border-left: 4px solid var(--accent-orange);
            background: rgba(255, 106, 61, 0.06);
            padding: 20px 24px;
            margin: 1.6em 0;
            border-radius: 4px 16px 16px 4px;
            color: #E8EEFF;
            line-height: 1.8;
            font-style: normal;
        }

        .rich-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .rich-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }

        .rich-content a:hover {
            color: var(--accent-orange);
        }

        .rich-content code {
            background: rgba(51, 224, 214, 0.08);
            color: var(--accent-cyan);
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
            font-size: 0.9em;
            padding: 2px 6px;
            border-radius: 5px;
        }

        .rich-content pre {
            background: #0A1120;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 18px 20px;
            overflow-x: auto;
            line-height: 1.6;
            margin: 1.6em 0;
        }

        .rich-content pre code {
            background: transparent;
            color: #DBE5FA;
            padding: 0;
            font-size: 0.92em;
        }

        .rich-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.7em 0;
            font-size: 0.96rem;
            border-radius: 14px;
            overflow: hidden;
        }

        .rich-content th {
            background: rgba(46, 107, 230, 0.16);
            color: var(--text-title);
            text-align: left;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .rich-content td {
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.07);
            background: rgba(255, 255, 255, 0.018);
        }

        .rich-content img {
            border-radius: 18px;
            margin: 30px auto;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-card);
            height: auto;
        }

        .rich-content hr {
            border: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 224, 214, 0.32), transparent);
            margin: 40px 0;
        }

        .article-end-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding-top: 32px;
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .notfound-panel {
            max-width: 720px;
            margin: 60px auto;
            background: rgba(11, 18, 38, 0.62);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 28px;
            padding: 56px 44px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .notfound-panel .mark-icon {
            display: inline-flex;
            width: 78px;
            height: 78px;
            border-radius: 24px;
            background: rgba(255, 106, 61, 0.08);
            border: 1px solid rgba(255, 106, 61, 0.24);
            align-items: center;
            justify-content: center;
            font-size: 2.2rem;
            color: var(--accent-orange);
            margin-bottom: 20px;
        }

        .notfound-panel h1 {
            font-size: 2rem;
            margin-bottom: 10px;
        }

        .related-section {
            padding: 0 0 var(--section-space);
        }

        .related-head {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 20px;
            margin-bottom: 34px;
        }

        .related-head h2 {
            font-size: clamp(1.55rem, 2vw + 0.5rem, 2.1rem);
            margin: 0;
        }

        .related-head a {
            color: var(--accent-cyan);
            font-size: 0.95rem;
        }

        .related-head a:hover {
            color: var(--accent-orange);
        }

        .related-feature-card,
        .related-card,
        .main-related-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(17, 25, 48, 0.44);
            box-shadow: var(--shadow-card);
            transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
        }

        .related-feature-card:hover,
        .related-card:hover,
        .main-related-card:hover {
            border-color: rgba(51, 224, 214, 0.38);
            box-shadow: 0 16px 44px rgba(3, 8, 22, 0.5), 0 0 0 1px rgba(51, 224, 214, 0.1);
            transform: translateY(-4px);
        }

        .related-card {
            background: rgba(13, 20, 40, 0.72);
        }

        .related-cover {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            overflow: hidden;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s cubic-bezier(0.2, 0.6, 0.2, 1);
        }

        .related-feature-card:hover img,
        .related-card:hover img,
        .main-related-card:hover img {
            transform: scale(1.045);
        }

        .related-content {
            padding: 24px 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-tag {
            display: inline-flex;
            align-self: flex-start;
            font-size: 0.78rem;
            color: var(--accent-cyan);
            background: rgba(51, 224, 214, 0.08);
            border: 1px solid rgba(51, 224, 214, 0.1);
            border-radius: 999px;
            padding: 3px 10px;
            margin-bottom: 12px;
        }

        .related-content h3 {
            font-size: 1.15rem;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-content p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--text-muted);
            margin: 0 0 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-more {
            margin-top: auto;
            font-size: 0.9rem;
            color: var(--text-body);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .related-more span {
            transition: transform 0.2s ease;
        }

        .related-card:hover .related-more span,
        .main-related-card:hover .related-more span,
        .related-feature-card:hover .related-more span {
            transform: translateX(4px);
        }

        .main-related-card .related-cover {
            aspect-ratio: auto;
            flex: 0 0 auto;
            position: relative;
            min-height: 260px;
        }

        .brand-cta-section {
            padding: 0 0 var(--section-space);
        }

        .cta-panel {
            background:
                radial-gradient(circle at 15% 15%, rgba(46, 107, 230, 0.24), transparent 32%),
                radial-gradient(circle at 82% 22%, rgba(255, 106, 61, 0.18), transparent 26%),
                rgba(10, 18, 35, 0.78);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 32px;
            padding: clamp(36px, 5vw, 72px);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            opacity: 0.14;
            z-index: 0;
        }

        .cta-inner {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: clamp(1.9rem, 3vw + 0.4rem, 2.9rem);
            margin-bottom: 12px;
        }

        .cta-inner .cta-sub {
            font-size: 1.05rem;
            color: var(--text-body);
            margin-bottom: 30px;
        }

        .cta-signup-form {
            display: flex;
            gap: 12px;
            max-width: 540px;
            margin: 0 auto 18px;
        }

        .cta-signup-form input[type="email"] {
            flex: 1;
            min-height: 50px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.07);
            color: var(--text-title);
            padding: 0 20px;
            font-size: 1rem;
            transition: border-color var(--ease), box-shadow var(--ease), background-color var(--ease);
        }

        .cta-signup-form input[type="email"]::placeholder {
            color: var(--text-muted);
            opacity: 1;
        }

        .cta-signup-form input[type="email"]:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 4px rgba(51, 224, 214, 0.12);
            background: rgba(255, 255, 255, 0.1);
        }

        .privacy-note {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 12px 0 0;
        }

        @media (max-width: 640px) {
            .cta-signup-form {
                flex-direction: column;
            }
        }

        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 64px 0 28px;
            font-size: 0.92rem;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-logo .brand-mark {
            width: 34px;
            height: 34px;
        }

        .footer-logo .brand-mark svg {
            width: 24px;
            height: 24px;
        }

        .footer-tagline {
            color: var(--text-muted);
            max-width: 330px;
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: border-color 0.2s ease, transform 0.2s ease;
        }

        .footer-social a:hover {
            transform: translateY(-2px);
            border-color: rgba(51, 224, 214, 0.5);
        }

        .footer-social svg {
            width: 17px;
            height: 17px;
            fill: var(--text-body);
        }

        .footer-col-title {
            color: var(--text-title);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }

        .footer-list a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

        .footer-list a:hover {
            color: var(--accent-cyan);
        }

        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
            color: var(--text-muted);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            align-items: center;
            justify-content: space-between;
            color: var(--text-muted);
            font-size: 0.86rem;
        }

        @media (max-width: 640px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root {
    --bg-deep: #060B18;
    --bg-main: #0B1226;
    --bg-elevated: #101A33;
    --surface-glass: rgba(17, 25, 48, 0.66);
    --stroke-glass: rgba(255, 255, 255, 0.09);
    --primary: #2E6BE6;
    --action-blue: #4C62F0;
    --accent-cyan: #33E0D6;
    --accent-orange: #FF6A3D;
    --text-title: #F4F7FF;
    --text-body: #C3CDE3;
    --text-muted: #7C89A8;
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-pill: 999px;
    --shadow-card: 0 12px 32px rgba(3, 8, 22, 0.35);
    --shadow-cyan: 0 8px 34px rgba(51, 224, 214, 0.12);
    --container-max: 1420px;
    --nav-h: 72px;
    --space-section: clamp(3.6rem, 7vw, 6.5rem);
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background:
      radial-gradient(circle at 18% -6%, rgba(46, 107, 230, 0.2), transparent 28%),
      radial-gradient(circle at 90% 12%, rgba(51, 224, 214, 0.09), transparent 24%),
      linear-gradient(180deg, #080F22 0%, var(--bg-deep) 100%);
    color: var(--text-body);
    font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  img {
    display: block;
    max-width: 100%;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  button,
  input {
    font-family: inherit;
  }

  ul,
  ol {
    list-style: none;
  }

  :focus-visible {
    outline: 3px solid rgba(51, 224, 214, 0.45);
    outline-offset: 3px;
  }

  .grid-container {
    max-width: var(--container-max);
  }

  ::selection {
    background: rgba(46, 107, 230, 0.35);
    color: #fff;
  }

  .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 48px);
  }

  .glass-panel {
    background: var(--surface-glass);
    border: 1px solid var(--stroke-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 28px;
    border: 0;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: transform 0.22s ease-out, box-shadow 0.22s ease-out, border-color 0.22s ease-out, background 0.22s ease-out;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--action-blue));
    color: #fff;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 8px 30px rgba(46, 107, 230, 0.35);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 14px 42px rgba(46, 107, 230, 0.5);
  }

  .btn-orange {
    background: linear-gradient(135deg, #FF8A3D, #FF5A2A);
    color: #0A0E1A;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 10px 32px rgba(255, 106, 61, 0.32);
  }

  .btn-orange:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14), 0 14px 42px rgba(255, 106, 61, 0.45);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: var(--text-title);
    box-shadow: none;
  }

  .btn-ghost:hover {
    transform: translateY(-2px);
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-cyan);
  }

  .site-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 80;
    transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    border-bottom: 1px solid transparent;
  }

  .site-header.scrolled {
    position: fixed;
    background: rgba(6, 11, 24, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 10px 30px rgba(3, 8, 22, 0.3);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
  }

  .nav-wrap {
    min-height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    position: relative;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    line-height: 1;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .brand-mark svg {
    width: 34px;
    height: 34px;
    filter: drop-shadow(0 0 12px rgba(51, 224, 214, 0.18));
  }

  .brand-name {
    color: #fff;
    font-size: 1.28rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    white-space: nowrap;
  }

  .brand-name small {
    display: inline-block;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    margin-left: 7px;
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    padding-left: 12px;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
  }

  .nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
  }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border-radius: var(--radius-pill);
    color: var(--text-body);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease, background 0.2s ease;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 0;
    height: 4px;
    border-radius: var(--radius-pill);
    background: var(--accent-orange);
    transform: translateX(-50%) scaleX(0);
    transition: width 0.2s ease-out, transform 0.2s ease-out;
    box-shadow: 0 0 12px rgba(255, 106, 61, 0.8);
  }

  .nav-link:hover {
    color: #fff;
  }

  .nav-link.is-active {
    color: #fff;
  }

  .nav-link.is-active::after {
    width: 22px;
    transform: translateX(-50%) scaleX(1);
  }

  .nav-cta {
    min-height: 42px;
    padding: 0 20px;
    flex-shrink: 0;
  }

  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex-direction: column;
    cursor: pointer;
    transition: border-color 0.2s ease;
    position: relative;
    z-index: 91;
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    display: block;
    transition: transform 0.25s ease-out, opacity 0.2s ease;
  }

  .nav-toggle:hover {
    border-color: rgba(51, 224, 214, 0.5);
  }

  body.nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  body.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  body.nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .category-hero {
    position: relative;
    min-height: clamp(480px, 52vh, 640px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: calc(var(--nav-h) + 56px) 0 72px;
    isolation: isolate;
  }

  .category-hero-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center 24%;
  }

  .category-hero-veil {
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
      linear-gradient(90deg, rgba(6, 11, 24, 0.94) 0%, rgba(6, 11, 24, 0.72) 48%, rgba(6, 11, 24, 0.38) 100%),
      linear-gradient(180deg, rgba(6, 11, 24, 0.32) 0%, rgba(6, 11, 24, 0.6) 100%);
  }

  .category-hero-inner {
    width: 100%;
  }

  .category-hero .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 0.88rem;
  }

  .category-hero .breadcrumb a {
    transition: color 0.2s ease;
  }

  .category-hero .breadcrumb a:hover {
    color: var(--accent-cyan);
  }

  .category-hero .breadcrumb .divider {
    color: rgba(255, 255, 255, 0.3);
  }

  .category-hero .breadcrumb .current {
    color: var(--text-body);
  }

  .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--accent-cyan);
    margin-bottom: 18px;
  }

  .hero-kicker::before {
    content: "";
    width: 30px;
    height: 2px;
    background: var(--accent-cyan);
    border-radius: 2px;
    box-shadow: 0 0 12px rgba(51, 224, 214, 0.6);
  }

  .category-hero h1 {
    color: var(--text-title);
    font-size: clamp(2.25rem, 5vw + 0.5rem, 4.4rem);
    line-height: 1.14;
    letter-spacing: 0.02em;
    font-weight: 700;
    max-width: 680px;
    margin-bottom: 22px;
  }

  .category-hero h1 .hero-accent {
    color: var(--accent-orange);
  }

  .category-hero p.hero-desc {
    max-width: 680px;
    font-size: 1.06rem;
    line-height: 1.9;
    color: var(--text-body);
    margin-bottom: 30px;
  }

  .category-hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
  }

  .category-hero-meta {
    margin-top: 34px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero-meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--radius-pill);
    padding: 8px 14px;
    color: var(--text-body);
    font-size: 0.86rem;
  }

  .hero-meta-pill i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    display: inline-block;
    box-shadow: 0 0 8px rgba(51, 224, 214, 0.8);
  }

  .category-scroll-hint {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.36);
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    white-space: nowrap;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: auto;
  }

  .category-scroll-hint::after {
    content: "";
    width: 1px;
    height: 26px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent);
  }

  .category-content {
    padding: var(--space-section) 0;
    position: relative;
  }

  .category-content + .category-content {
    padding-top: 0;
  }

  .category-content-alt {
    background: linear-gradient(180deg, rgba(16, 26, 51, 0.32), rgba(6, 11, 24, 0.2));
  }

  .content-topbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 30px;
    flex-wrap: wrap;
  }

  .content-topbar .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    margin-bottom: 10px;
    font-weight: 500;
  }

  .content-topbar h2 {
    color: var(--text-title);
    font-size: clamp(1.7rem, 2.6vw + 0.5rem, 2.6rem);
    line-height: 1.25;
    font-weight: 700;
  }

  .content-topbar .topbar-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.92rem;
    transition: color 0.2s ease;
    white-space: nowrap;
  }

  .content-topbar .topbar-link:hover {
    color: var(--accent-cyan);
  }

  .content-topbar .topbar-link i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-orange);
    box-shadow: 0 0 0 4px rgba(255, 106, 61, 0.14);
  }

  .category-toolbar {
    border: 1px solid rgba(255, 255, 255, 0.07);
    background: rgba(16, 26, 51, 0.45);
    border-radius: 18px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
  }

  .toolbar-filters {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .filter-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 18px;
    border-radius: var(--radius-pill);
    color: var(--text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    background: transparent;
    transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  }

  .filter-pill.is-active {
    background: rgba(51, 224, 214, 0.08);
    color: var(--accent-cyan);
    box-shadow: inset 0 0 0 1px rgba(51, 224, 214, 0.22);
  }

  .toolbar-count {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
    white-space: nowrap;
  }

  .toolbar-count .count-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(51, 224, 214, 0.7);
  }

  .ag-card-wrap {
    margin-bottom: 24px;
  }

  .ag-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(20, 32, 60, 0.5), rgba(10, 17, 36, 0.6));
    border: 1px solid rgba(255, 255, 255, 0.07);
    overflow: hidden;
    position: relative;
    transition: transform 0.25s ease-out, border-color 0.25s ease-out, box-shadow 0.25s ease-out;
    box-shadow: var(--shadow-card);
  }

  .ag-card:hover {
    transform: translateY(-4px);
    border-color: rgba(51, 224, 214, 0.35);
    box-shadow: 0 18px 48px rgba(3, 8, 22, 0.5), var(--shadow-cyan);
  }

  .ag-card-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #101a33, #1a2948);
  }

  .ag-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease-out;
  }

  .ag-card:hover .ag-card-media img {
    transform: scale(1.04);
  }

  .ag-card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 62%, rgba(6, 11, 24, 0.42) 100%);
    pointer-events: none;
  }

  .ag-card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    height: 28px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    background: rgba(6, 11, 24, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #f7fbff;
    font-size: 0.8rem;
    font-weight: 500;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  .ag-card-badge::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-orange);
    box-shadow: 0 0 8px var(--accent-orange);
  }

  .ag-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px 22px 20px;
  }

  .ag-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
  }

  .ag-tag {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 0 10px;
    border-radius: var(--radius-md);
    background: rgba(51, 224, 214, 0.08);
    border: 1px solid rgba(51, 224, 214, 0.16);
    color: var(--accent-cyan);
    font-size: 0.78rem;
    gap: 6px;
  }

  .ag-tag.orange {
    background: rgba(255, 106, 61, 0.08);
    border-color: rgba(255, 106, 61, 0.18);
    color: #FFAD8A;
  }

  .ag-card h3 {
    color: var(--text-title);
    font-size: 1.18rem;
    line-height: 1.48;
    font-weight: 650;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
  }

  .ag-card:hover h3 {
    color: #fff;
  }

  .ag-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
  }

  .ag-card-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 12px;
    font-size: 0.84rem;
    color: var(--text-muted);
  }

  .ag-card-footer .read-more {
    color: var(--text-body);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s ease;
  }

  .ag-card-footer .read-more::after {
    content: "→";
    color: var(--accent-cyan);
    transition: transform 0.2s ease;
  }

  .ag-card:hover .read-more {
    color: #fff;
  }

  .ag-card:hover .read-more::after {
    transform: translateX(3px);
  }

  .ag-card.featured-card .ag-card-media {
    aspect-ratio: 16 / 9;
  }

  .ag-card.featured-card .ag-card-body {
    padding: 26px 28px 24px;
  }

  .ag-card.featured-card h3 {
    font-size: clamp(1.35rem, 1.2vw + 1rem, 1.85rem);
    line-height: 1.4;
  }

  .ag-card.featured-card p {
    font-size: 1rem;
    -webkit-line-clamp: 3;
  }

  .ag-card .corner-num {
    position: absolute;
    right: 16px;
    bottom: 8px;
    font-size: 3rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.04);
    line-height: 1;
    font-variant-numeric: tabular-nums;
    z-index: 1;
    pointer-events: none;
    font-family: Georgia, "Times New Roman", serif;
  }

  .ag-card.large-panel {
    flex-direction: row;
    align-items: stretch;
  }

  .ag-card.large-panel .ag-card-media {
    width: 42%;
    aspect-ratio: auto;
    flex-shrink: 0;
  }

  .ag-card.large-panel .ag-card-body {
    width: 58%;
  }

  .ag-card.large-panel h3 {
    font-size: 1.35rem;
  }

  .ag-card.large-panel p {
    -webkit-line-clamp: 3;
  }

  .classic-media-strip {
    margin-bottom: 44px;
  }

  .classic-feature {
    margin-top: 20px;
  }

  .category-faq {
    padding: var(--space-section) 0;
    background: linear-gradient(180deg, rgba(16, 26, 51, 0.16), transparent);
  }

  .category-faq .faq-inner {
    max-width: 920px;
    margin: 0 auto;
  }

  .section-heading-center {
    text-align: center;
    margin-bottom: 38px;
  }

  .section-heading-center .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    font-size: 0.92rem;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
  }

  .section-heading-center h2 {
    color: var(--text-title);
    font-size: clamp(1.7rem, 2.6vw + 0.5rem, 2.6rem);
    line-height: 1.25;
    font-weight: 700;
  }

  .faq-list {
    display: grid;
    gap: 12px;
  }

  .faq-item {
    background: rgba(17, 25, 48, 0.48);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .faq-item[open] {
    border-color: rgba(51, 224, 214, 0.35);
    box-shadow: 0 0 0 1px rgba(51, 224, 214, 0.12), 0 12px 28px rgba(3, 8, 22, 0.2);
  }

  .faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    color: var(--text-title);
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.5;
    transition: color 0.2s ease;
    position: relative;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary:hover {
    color: var(--accent-cyan);
  }

  .faq-item summary::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    border-radius: 3px;
    background: var(--accent-orange);
    opacity: 0;
    transition: opacity 0.2s ease;
  }

  .faq-item[open] summary::before {
    opacity: 1;
  }

  .faq-item .faq-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    flex-shrink: 0;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    position: relative;
  }

  .faq-item .faq-mark::before,
  .faq-item .faq-mark::after {
    content: "";
    position: absolute;
    width: 9px;
    height: 1.6px;
    background: currentColor;
    border-radius: 2px;
  }

  .faq-item .faq-mark::after {
    transform: rotate(90deg);
  }

  .faq-item[open] .faq-mark {
    transform: rotate(135deg);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
  }

  .faq-item .faq-answer {
    padding: 0 22px 20px;
    color: var(--text-body);
    line-height: 1.8;
    font-size: 0.95rem;
    max-width: 90%;
  }

  .category-switch {
    padding: 0 0 var(--space-section);
  }

  .switch-panel {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    padding: clamp(28px, 5vw, 54px);
    background: rgba(17, 25, 48, 0.58);
    border: 1px solid rgba(255, 255, 255, 0.09);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
  }

  .switch-panel::before {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 106, 61, 0.16), transparent 70%);
    right: -80px;
    top: -140px;
    pointer-events: none;
  }

  .switch-grid {
    position: relative;
    z-index: 1;
  }

  .switch-panel h2 {
    color: var(--text-title);
    font-size: clamp(1.4rem, 2vw + 0.6rem, 2.1rem);
    margin-bottom: 12px;
  }

  .switch-panel p {
    color: var(--text-body);
    line-height: 1.85;
    margin-bottom: 24px;
    max-width: 560px;
  }

  .switch-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
  }

  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: clamp(44px, 6vw, 72px) 0 28px;
  }

  .site-footer .grid-container {
    max-width: var(--container-max);
  }

  .site-footer .cell {
    margin-bottom: 24px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
  }

  .footer-logo .brand-mark svg {
    width: 30px;
    height: 30px;
  }

  .footer-logo .brand-name {
    font-size: 1.1rem;
  }

  .footer-tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 18px;
    max-width: 320px;
  }

  .footer-social {
    display: flex;
    gap: 10px;
  }

  .footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .footer-social a svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
  }

  .footer-social a:hover {
    color: var(--accent-cyan);
    border-color: rgba(51, 224, 214, 0.4);
    box-shadow: 0 0 12px rgba(51, 224, 214, 0.14);
  }

  .footer-col-title {
    color: var(--text-title);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 14px;
    letter-spacing: 0.04em;
  }

  .footer-list li {
    margin-bottom: 10px;
  }

  .footer-list a,
  .footer-contact-list li {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    transition: color 0.2s ease;
  }

  .footer-list a:hover {
    color: var(--accent-cyan);
  }

  .footer-contact-list li {
    padding-left: 2px;
    display: flex;
    align-items: flex-start;
    gap: 6px;
  }

  .footer-bottom {
    margin-top: 46px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 24px;
    color: var(--text-muted);
    font-size: 0.82rem;
  }

  .footer-bottom .footer-domain {
    color: rgba(255, 255, 255, 0.35);
  }

  @media (max-width: 1180px) {
    .ag-card.large-panel {
      flex-direction: column;
    }
    .ag-card.large-panel .ag-card-media,
    .ag-card.large-panel .ag-card-body {
      width: 100%;
    }
    .ag-card.large-panel .ag-card-media {
      aspect-ratio: 16 / 10;
    }
    .brand-name small {
      display: none;
    }
    .site-nav {
      gap: 10px;
    }
    .nav-link {
      padding: 0 12px;
      font-size: 0.9rem;
    }
  }

  @media (max-width: 900px) {
    .nav-toggle {
      display: inline-flex;
    }

    .site-header {
      position: absolute;
    }

    .site-nav {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      width: min(320px, 88vw);
      height: 100dvh;
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      padding: calc(var(--nav-h) + 20px) 24px 24px;
      background: rgba(6, 11, 24, 0.86);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(24px) saturate(140%);
      -webkit-backdrop-filter: blur(24px) saturate(140%);
      transform: translateX(102%);
      transition: transform 0.28s ease-out;
      box-shadow: -18px 0 40px rgba(0, 0, 0, 0.26);
      gap: 10px;
      z-index: 90;
    }

    .site-nav.is-open {
      transform: translateX(0);
    }

    .nav-list {
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
      margin-bottom: 14px;
    }

    .nav-link {
      justify-content: flex-start;
      padding: 0 14px;
      font-size: 1rem;
      min-height: 46px;
    }

    .nav-link.is-active {
      background: rgba(51, 224, 214, 0.06);
    }

    .nav-link.is-active::after {
      left: 10px;
      right: auto;
      bottom: 8px;
      width: 16px;
      transform: none;
    }

    .nav-cta {
      margin-top: 16px;
      width: 100%;
    }
  }

  @media (max-width: 740px) {
    :root {
      --nav-h: 62px;
    }

    .category-hero {
      min-height: auto;
      align-items: flex-start;
      padding-top: calc(var(--nav-h) + 42px);
      padding-bottom: 42px;
    }

    .category-hero h1 {
      font-size: clamp(2rem, 10vw, 2.8rem);
    }

    .category-hero p.hero-desc {
      font-size: 0.96rem;
    }

    .category-hero-actions .btn,
    .switch-actions .btn {
      width: 100%;
    }

    .content-topbar {
      align-items: flex-start;
    }

    .category-toolbar {
      padding: 12px;
      gap: 14px;
    }

    .toolbar-filters {
      width: 100%;
      overflow-x: auto;
      padding-bottom: 2px;
    }

    .filter-pill {
      flex-shrink: 0;
    }

    .toolbar-count {
      width: 100%;
    }

    .ag-card-body {
      padding: 16px;
    }

    .ag-card.featured-card .ag-card-body {
      padding: 18px 16px 16px;
    }

    .ag-card.featured-card h3 {
      font-size: 1.22rem;
    }

    .ag-card.featured-card p {
      -webkit-line-clamp: 2;
    }

    .ag-card.large-panel .ag-card-media,
    .ag-card .ag-card-media {
      aspect-ratio: 16 / 8.5;
    }

    .faq-item summary {
      padding: 15px 16px;
      font-size: 0.95rem;
    }

    .faq-item .faq-answer {
      padding: 0 16px 18px;
      max-width: 100%;
    }

    .switch-panel {
      padding: 24px 18px 26px;
      border-radius: 20px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: category2 */
:root {
      --bg-deep: #060B18;
      --bg-main: #0B1226;
      --bg-elevated: #101A33;
      --surface-glass: rgba(17, 25, 48, .62);
      --stroke-glass: rgba(255, 255, 255, .09);
      --primary: #2E6BE6;
      --accent-cyan: #33E0D6;
      --accent-orange: #FF6A3D;
      --text-title: #F4F7FF;
      --text-body: #C3CDE3;
      --text-muted: #7C89A8;
      --radius-lg: 20px;
      --radius-md: 12px;
      --radius-pill: 999px;
      --shadow-card: 0 12px 32px rgba(3, 8, 22, .35);
      --shadow-float: 0 20px 44px rgba(3, 8, 22, .48), 0 0 0 1px rgba(51, 224, 214, .06);
      --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, sans-serif;
      --font-num: "SFMono-Regular", "Menlo", "Roboto Mono", Consolas, monospace;
    }

    * {
      box-sizing: border-box;
    }

    html,
    body {
      background: var(--bg-deep);
      color: var(--text-body);
      font-family: var(--font-cn);
      font-variant-numeric: tabular-nums;
      line-height: 1.8;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    body {
      background:
        radial-gradient(1000px 620px at 15% -8%, rgba(46, 107, 230, .14), transparent 60%),
        radial-gradient(900px 540px at 92% 12%, rgba(51, 224, 214, .07), transparent 55%),
        var(--bg-deep);
    }

    body.nav-open {
      overflow: hidden;
    }

    img,
    svg,
    video {
      max-width: 100%;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    ul,
    ol {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    p,
    h1,
    h2,
    h3,
    h4,
    h5,
    figure {
      margin: 0;
    }

    button,
    input {
      font-family: inherit;
      font-size: inherit;
      color: inherit;
      border: 0;
      background: none;
      outline: none;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--accent-cyan);
      outline-offset: 4px;
      border-radius: 6px;
    }

    .sr-only {
      position: absolute !important;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    .grid-container {
      max-width: 1440px;
      padding-left: 40px;
      padding-right: 40px;
    }

    /* ========== Header / Nav ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 300;
      backdrop-filter: blur(18px) saturate(140%);
      -webkit-backdrop-filter: blur(18px) saturate(140%);
      background: rgba(6, 11, 24, .72);
      border-bottom: 1px solid rgba(255, 255, 255, .06);
      transition: background .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .site-header.scrolled {
      background: rgba(6, 11, 24, .94);
      box-shadow: 0 12px 34px rgba(3, 8, 22, .4);
      border-bottom-color: rgba(255, 255, 255, .08);
    }

    .header-inner {
      display: flex;
      align-items: center;
      min-height: 80px;
      gap: 32px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      flex: 0 0 auto;
      gap: 10px;
      color: #fff;
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(46, 107, 230, .26), rgba(51, 224, 214, .12));
      border: 1px solid rgba(255, 255, 255, .1);
      box-shadow: 0 0 0 1px rgba(51, 224, 214, .04), 0 8px 16px rgba(46, 107, 230, .18);
    }

    .brand-mark svg {
      width: 32px;
      height: 32px;
    }

    .brand-name {
      font-weight: 700;
      font-size: 1.3rem;
      letter-spacing: .04em;
      line-height: 1.2;
      color: var(--text-title);
    }

    .brand-name small {
      display: block;
      font-size: .68rem;
      font-weight: 500;
      color: var(--text-muted);
      letter-spacing: .12em;
    }

    .site-nav {
      margin-left: auto;
    }

    .nav-list {
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 20px;
      font-size: 1rem;
      font-weight: 500;
      color: var(--text-body);
      border-radius: var(--radius-pill);
      transition: color .18s ease, background-color .18s ease, box-shadow .18s ease;
    }

    .nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, .04);
    }

    .nav-link.is-active {
      color: #fff;
      font-weight: 600;
      background: rgba(46, 107, 230, .13);
      box-shadow: inset 0 0 0 1px rgba(51, 224, 214, .16);
    }

    .nav-link.is-active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 2px;
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--accent-orange);
      transform: translateX(-50%);
      box-shadow: 0 0 0 4px rgba(255, 106, 61, .12), 0 0 12px rgba(255, 106, 61, .55);
    }

    .header-aside {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 24px;
      border-radius: var(--radius-pill);
      font-size: .95rem;
      font-weight: 600;
      line-height: 1.4;
      letter-spacing: .02em;
      white-space: nowrap;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #4C62F0);
      color: #fff;
      padding: 0 30px;
      min-height: 48px;
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .06), 0 8px 30px rgba(46, 107, 230, .35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .1), 0 14px 36px rgba(46, 107, 230, .48);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, .04);
      border: 1px solid rgba(255, 255, 255, .1);
      color: var(--text-title);
      min-height: 48px;
      padding: 0 28px;
    }

    .btn-ghost:hover {
      border-color: rgba(51, 224, 214, .8);
      background: rgba(51, 224, 214, .07);
      transform: translateY(-2px);
      box-shadow: 0 10px 32px rgba(3, 8, 22, .3);
    }

    .btn-accent {
      background: linear-gradient(135deg, var(--accent-orange), #F74E24);
      color: #fff;
      min-height: 52px;
      padding: 0 32px;
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .08), 0 12px 32px rgba(255, 106, 61, .3);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .12), 0 16px 44px rgba(255, 106, 61, .46);
    }

    .menu-toggle {
      display: none;
      width: 48px;
      height: 48px;
      margin-left: auto;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      border: 1px solid rgba(255, 255, 255, .1);
      background: rgba(255, 255, 255, .04);
      color: #fff;
      cursor: pointer;
    }

    .menu-toggle svg {
      width: 24px;
      height: 24px;
    }

    .mobile-footer-note {
      display: none;
    }

    /* ========== Hero ========== */
    .category-hero {
      position: relative;
      display: flex;
      align-items: center;
      min-height: 52vh;
      padding: 80px 0 96px;
      background:
        linear-gradient(98deg, rgba(6, 11, 24, .96) 8%, rgba(6, 12, 28, .74) 48%, rgba(11, 18, 38, .52) 100%),
        url("/assets/images/backpic/back-3.webp") center / cover no-repeat;
      color: #fff;
      isolation: isolate;
      overflow: hidden;
    }

    .category-hero::after {
      content: "";
      position: absolute;
      z-index: -1;
      right: -5%;
      bottom: -30%;
      width: 700px;
      height: 700px;
      background: radial-gradient(circle at center, rgba(51, 224, 214, .12), transparent 60%);
      filter: blur(70px);
    }

    .category-hero .grid-container {
      position: relative;
      z-index: 2;
    }

    .crumbs {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: .9rem;
      color: var(--text-muted);
      margin-bottom: 18px;
    }

    .crumbs a {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      transition: color .2s;
    }

    .crumbs a:hover {
      color: var(--accent-cyan);
    }

    .crumbs span {
      color: rgba(255, 255, 255, .4);
      padding: 0 2px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: .9rem;
      letter-spacing: .12em;
      font-weight: 600;
      color: var(--accent-cyan);
      margin-bottom: 16px;
      text-transform: uppercase;
    }

    .pulse-dot {
      width: 9px;
      height: 9px;
      border-radius: 99px;
      background: var(--accent-cyan);
      box-shadow: 0 0 0 5px rgba(51, 224, 214, .12), 0 0 14px rgba(51, 224, 214, .68);
      animation: pulse 2.2s ease-out infinite;
    }

    @keyframes pulse {
      0% {
        box-shadow: 0 0 0 0 rgba(51, 224, 214, .38);
        opacity: 1;
      }
      65% {
        box-shadow: 0 0 0 8px rgba(51, 224, 214, 0);
        opacity: .9;
      }
      100% {
        box-shadow: 0 0 0 0 rgba(51, 224, 214, 0);
      }
    }

    .hero-title {
      max-width: 980px;
      font-size: clamp(2.4rem, 5vw + 1rem, 4.6rem);
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: -.01em;
      color: var(--text-title);
      margin-bottom: 28px;
    }

    .hero-title-note {
      display: inline-flex;
      align-items: center;
      vertical-align: top;
      margin-left: .3em;
      padding: .16em .42em;
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: 999px;
      background: rgba(255, 255, 255, .06);
      font-size: .24em;
      font-weight: 700;
      letter-spacing: .05em;
      color: #fff;
      line-height: 1.5;
    }

    .hero-lead {
      max-width: 680px;
      font-size: 1.08rem;
      line-height: 1.9;
      color: var(--text-body);
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 40px;
    }

    .hero-actions .btn {
      min-height: 52px;
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 28px;
    }

    .hero-meta li {
      position: relative;
      display: inline-flex;
      align-items: flex-start;
      gap: 10px;
      font-size: .92rem;
      color: var(--text-muted);
      line-height: 1.55;
      padding-left: 2px;
    }

    .hero-meta li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 2px;
      background: var(--accent-orange);
      margin-top: .6em;
      box-shadow: 0 0 0 4px rgba(255, 106, 61, .08);
      flex: 0 0 auto;
    }

    /* ========== Sections base ========== */
    .section-block {
      padding: 110px 0;
    }

    .section-bg-alt {
      background:
        radial-gradient(820px 460px at 92% 0%, rgba(46, 107, 230, .08), transparent 60%),
        linear-gradient(180deg, rgba(11, 18, 38, .72), rgba(9, 14, 30, .96)),
        var(--bg-elevated);
    }

    .section-header {
      max-width: 780px;
      margin: 0 auto 56px;
      text-align: center;
    }

    .section-header--left {
      margin: 0 0 40px;
      text-align: left;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: .85rem;
      font-weight: 700;
      letter-spacing: .15em;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }

    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--accent-cyan);
      display: inline-block;
    }

    .section-title {
      font-size: clamp(1.8rem, 2.6vw + .5rem, 2.7rem);
      line-height: 1.3;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1rem;
      line-height: 1.9;
      color: var(--text-body);
      max-width: 760px;
      margin: 0 auto;
    }

    /* ========== Coverage ========== */
    .coverage-block .grid-container .grid-x {
      gap: 0;
    }

    .coverage-copy {
      padding-right: 54px;
    }

    .coverage-copy .section-desc {
      margin: 0 0 28px;
    }

    .coverage-copy .section-title {
      margin-top: 6px;
    }

    .coverage-list {
      display: grid;
      gap: 10px;
    }

    .coverage-list li {
      display: grid;
      grid-template-columns: 2px 1fr;
      column-gap: 16px;
      padding: 14px 0;
    }

    .coverage-list li::before {
      content: "";
      width: 2px;
      height: 100%;
      background: linear-gradient(180deg, var(--accent-orange), rgba(255, 106, 61, 0));
      border-radius: 4px;
    }

    .coverage-list strong {
      display: block;
      color: var(--text-title);
      font-weight: 650;
      font-size: 1.02rem;
      line-height: 1.6;
      margin-bottom: 2px;
    }

    .coverage-list span {
      color: var(--text-muted);
      font-size: .95rem;
      line-height: 1.75;
      display: block;
      max-width: 520px;
    }

    .poster-frame {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid rgba(255, 255, 255, .08);
    }

    .poster-frame img {
      min-height: 420px;
      object-fit: cover;
      width: 100%;
    }

    .poster-frame::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 30%, rgba(6, 11, 24, .86) 94%);
      pointer-events: none;
    }

    .poster-frame figcaption {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 22px;
      z-index: 2;
      color: #fff;
      font-weight: 600;
      font-size: 1rem;
      line-height: 1.6;
      padding-left: 14px;
      border-left: 3px solid var(--accent-orange);
    }

    /* ========== Scenario cards ========== */
    .scenario-grid {
      margin-top: 8px;
    }

    .scenario-card {
      position: relative;
      height: 100%;
      background: rgba(255, 255, 255, .035);
      border: 1px solid rgba(255, 255, 255, .075);
      border-radius: 22px;
      padding: 28px 26px 30px;
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
      overflow: hidden;
    }

    .scenario-card:hover {
      background: rgba(255, 255, 255, .052);
      border-color: rgba(51, 224, 214, .28);
      transform: translateY(-4px);
      box-shadow: 0 10px 32px rgba(3, 8, 22, .26), 0 0 0 1px rgba(51, 224, 214, .03);
    }

    .scenario-card::before {
      content: "";
      position: absolute;
      top: -70px;
      right: -70px;
      width: 160px;
      height: 160px;
      background: radial-gradient(circle, rgba(46, 107, 230, .15), transparent 68%);
      pointer-events: none;
    }

    .scenario-icon {
      width: 52px;
      height: 52px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 15px;
      background: rgba(46, 107, 230, .14);
      border: 1px solid rgba(46, 107, 230, .2);
      margin-bottom: 24px;
    }

    .scenario-icon svg {
      width: 26px;
      height: 26px;
      stroke: var(--accent-cyan);
      fill: none;
      stroke-width: 1.9;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .scenario-card h3 {
      color: var(--text-title);
      font-size: 1.22rem;
      line-height: 1.5;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .scenario-card p {
      color: var(--text-muted);
      font-size: .97rem;
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent-cyan);
      font-weight: 600;
      font-size: .95rem;
      min-height: 36px;
      transition: color .2s ease, gap .2s ease;
    }

    .card-link:hover {
      color: var(--accent-orange);
      gap: 10px;
    }

    .card-link svg {
      width: 16px;
      height: 16px;
      stroke: currentColor;
      fill: none;
      stroke-width: 2.2;
    }

    /* ========== Channel collection ========== */
    .channel-collection .section-desc {
      margin-bottom: 0;
    }

    .collection-slot {
      margin-bottom: 24px;
    }

    .feature-panel {
      position: relative;
      display: flex;
      min-height: 420px;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
      isolation: isolate;
      height: 100%;
    }

    .feature-panel img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: -2;
    }

    .feature-panel::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(6, 11, 24, .95) 4%, rgba(6, 11, 24, .72) 46%, rgba(6, 11, 24, .24) 100%);
      z-index: -1;
      transition: background .25s ease;
    }

    .feature-panel:hover {
      border-color: rgba(51, 224, 214, .24);
    }

    .feature-panel-content {
      align-self: flex-end;
      padding: 38px 36px;
      max-width: 700px;
    }

    .panel-tag-group {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 13px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      width: auto;
      min-height: 30px;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .12);
      font-size: .8rem;
      font-weight: 600;
      color: var(--text-title);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .tag--status {
      background: rgba(255, 106, 61, .16);
      border-color: rgba(255, 106, 61, .28);
      color: #FFB59B;
    }

    .feature-panel h3 {
      color: #fff;
      font-size: clamp(1.5rem, 2.4vw, 2.2rem);
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 12px;
      max-width: 620px;
    }

    .feature-panel p {
      color: rgba(228, 237, 255, .82);
      font-size: 1.04rem;
      line-height: 1.85;
      max-width: 580px;
      margin-bottom: 20px;
    }

    .mini-stack {
      display: flex;
      flex-direction: column;
      gap: 24px;
      height: 100%;
    }

    .mini-card {
      background: rgba(255, 255, 255, .035);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 20px;
      overflow: hidden;
      flex: 1;
      transition: transform .22s ease, border-color .22s ease, background-color .22s ease;
      display: flex;
      flex-direction: column;
    }

    .mini-card:hover {
      transform: translateY(-3px);
      border-color: rgba(51, 224, 214, .24);
      background: rgba(255, 255, 255, .055);
    }

    .mini-card .mini-media {
      height: 112px;
      overflow: hidden;
    }

    .mini-card .mini-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }

    .mini-card:hover .mini-media img {
      transform: scale(1.04);
    }

    .mini-card-body {
      padding: 20px 22px 24px;
    }

    .mini-card-body h3 {
      color: var(--text-title);
      font-size: 1.16rem;
      line-height: 1.6;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .mini-card-body p {
      font-size: .92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .bottom-channel-card {
      display: flex;
      background: rgba(255, 255, 255, .035);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 20px;
      overflow: hidden;
      min-height: 184px;
      height: 100%;
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }

    .bottom-channel-card:hover {
      border-color: rgba(51, 224, 214, .26);
      transform: translateY(-3px);
      box-shadow: var(--shadow-float);
    }

    .bottom-channel-card .channel-media {
      flex: 0 0 220px;
      overflow: hidden;
    }

    .bottom-channel-card .channel-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }

    .bottom-channel-card:hover .channel-media img {
      transform: scale(1.05);
    }

    .bottom-channel-card .channel-content {
      padding: 22px 24px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      justify-content: center;
    }

    .bottom-channel-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-title);
      margin-top: 8px;
      line-height: 1.5;
    }

    .bottom-channel-card p {
      color: var(--text-muted);
      font-size: .97rem;
      line-height: 1.8;
      margin: 8px 0 10px;
    }

    /* ========== Steps ========== */
    .steps-block {
      background:
        linear-gradient(180deg, rgba(9, 14, 30, .5), rgba(6, 11, 24, .4)),
        radial-gradient(700px 420px at 0% 0%, rgba(46, 107, 230, .1), transparent 55%),
        var(--bg-deep);
      border-top: 1px solid rgba(255, 255, 255, .05);
      border-bottom: 1px solid rgba(255, 255, 255, .05);
    }

    .step-grid {
      margin-top: 16px;
    }

    .step-card {
      height: 100%;
      padding: 18px 10px 10px;
      position: relative;
    }

    .step-num {
      font-size: 2.2rem;
      line-height: 1;
      font-weight: 200;
      color: rgba(255, 255, 255, .28);
      font-family: var(--font-num);
      margin-bottom: 20px;
      letter-spacing: -.05em;
    }

    .step-line {
      width: 40px;
      height: 3px;
      background: linear-gradient(90deg, var(--accent-cyan), var(--primary));
      border-radius: 4px;
      margin-bottom: 18px;
    }

    .step-card h3 {
      color: var(--text-title);
      font-size: 1.15rem;
      line-height: 1.5;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      color: var(--text-muted);
      font-size: .95rem;
      line-height: 1.8;
    }

    /* ========== FAQ ========== */
    .faq-block {
      background: linear-gradient(180deg, rgba(6, 11, 24, .1), rgba(11, 18, 38, .44));
    }

    .faq-wrap {
      max-width: 920px;
      margin: 0 auto;
    }

    .faq-item {
      background: rgba(255, 255, 255, .035);
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 16px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color .2s ease, background-color .2s ease;
    }

    .faq-item[open] {
      background: rgba(255, 255, 255, .05);
      border-color: rgba(51, 224, 214, .18);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      cursor: pointer;
      list-style: none;
      padding: 20px 24px;
      min-height: 58px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--text-title);
      line-height: 1.6;
      transition: color .2s;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item:hover {
      border-color: rgba(255, 255, 255, .16);
    }

    .faq-item[open] summary {
      color: #fff;
    }

    .faq-icon {
      position: relative;
      flex: 0 0 28px;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, .14);
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      width: 12px;
      height: 2px;
      background: var(--accent-cyan);
      transform: translate(-50%, -50%);
      border-radius: 4px;
      transition: transform .2s ease;
    }

    .faq-icon::after {
      transform: translate(-50%, -50%) rotate(90deg);
    }

    .faq-item[open] .faq-icon::after {
      transform: translate(-50%, -50%) rotate(0deg);
    }

    .faq-answer {
      padding: 2px 28px 22px;
      line-height: 1.85;
      color: var(--text-body);
      max-width: 820px;
      font-size: .98rem;
    }

    .faq-answer p {
      margin-bottom: 6px;
    }

    /* ========== CTA ========== */
    .cta-band {
      padding: 120px 0;
      background:
        linear-gradient(115deg, rgba(6, 11, 24, .97), rgba(10, 18, 34, .84)),
        url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
      border-top: 1px solid rgba(255, 255, 255, .04);
    }

    .cta-shell {
      position: relative;
      border-radius: 28px;
      padding: 56px 44px 48px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, .1);
      background: rgba(15, 23, 47, .55);
      backdrop-filter: blur(18px) saturate(135%);
      -webkit-backdrop-filter: blur(18px) saturate(135%);
      box-shadow: 0 24px 60px rgba(3, 8, 22, .45);
    }

    .cta-shell::after {
      content: "";
      position: absolute;
      right: -120px;
      top: -170px;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(51, 224, 214, .18), transparent 55%);
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }

    .cta-shell h2 {
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.6rem);
      line-height: 1.4;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .cta-shell>p {
      color: var(--text-body);
      font-size: 1rem;
      margin-bottom: 30px;
      max-width: 720px;
    }

    .subscribe-form {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      max-width: 640px;
    }

    .form-input-wrap {
      flex: 1 1 240px;
    }

    .form-control {
      display: block;
      width: 100%;
      min-height: 54px;
      background: rgba(255, 255, 255, .075);
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 14px;
      padding: 0 18px;
      color: #fff;
      transition: border-color .2s, box-shadow .2s, background-color .2s;
    }

    .form-control::placeholder {
      color: rgba(182, 199, 226, .64);
    }

    .form-control:focus {
      background: rgba(255, 255, 255, .1);
      border-color: rgba(51, 224, 214, .72);
      box-shadow: 0 0 0 3px rgba(51, 224, 214, .12);
    }

    .form-privacy {
      font-size: .84rem;
      color: var(--text-muted);
      margin-top: 18px;
    }

    .form-feedback {
      color: var(--accent-cyan);
      font-weight: 600;
      margin-top: 14px;
      display: none;
    }

    .cross-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 14px;
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .09);
    }

    .cross-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--text-body);
      font-size: .94rem;
      transition: color .2s;
      min-height: 36px;
    }

    .cross-link:hover {
      color: var(--accent-cyan);
    }

    .cross-link svg {
      width: 14px;
      height: 14px;
      stroke: currentColor;
      stroke-width: 2;
      fill: none;
    }

    /* ========== Footer ========== */
    .site-footer {
      background: #04080F;
      border-top: 1px solid rgba(255, 255, 255, .06);
      padding: 72px 0 34px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 18px;
    }

    .footer-logo .brand-name {
      font-size: 1.28rem;
    }

    .footer-tagline {
      font-size: .93rem;
      color: var(--text-muted);
      line-height: 1.85;
      max-width: 300px;
      margin: 14px 0 20px;
    }

    .footer-social {
      display: flex;
      gap: 10px;
    }

    .footer-social a {
      width: 40px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(255, 255, 255, .09);
      border-radius: 12px;
      background: rgba(255, 255, 255, .04);
      transition: border-color .2s, background-color .2s, transform .2s;
      color: var(--text-body);
    }

    .footer-social a:hover {
      background: rgba(51, 224, 214, .07);
      border-color: rgba(51, 224, 214, .3);
      transform: translateY(-2px);
      color: var(--accent-cyan);
    }

    .footer-social svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }

    .footer-col-title {
      color: #fff;
      font-size: 1.02rem;
      margin-bottom: 14px;
      font-weight: 650;
    }

    .footer-list,
    .footer-contact-list {
      display: grid;
      gap: 4px;
    }

    .footer-list a,
    .footer-contact-list span {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      font-size: .93rem;
      color: var(--text-muted);
      transition: color .2s ease, padding-left .2s ease;
    }

    .footer-list a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }

    .footer-contact-list {
      gap: 12px;
    }

    .footer-contact-list span {
      color: var(--text-muted);
      line-height: 1.7;
      min-height: auto;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 8px 20px;
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, .06);
      color: var(--text-muted);
      font-size: .88rem;
    }

    .footer-bottom a {
      color: var(--text-muted);
    }

    .footer-bottom a:hover {
      color: var(--accent-cyan);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
      .grid-container {
        padding-left: 28px;
        padding-right: 28px;
      }

      .site-nav {
        position: fixed;
        inset: 0 0 0 auto;
        z-index: 400;
        width: min(400px, 84vw);
        height: 100dvh;
        margin: 0;
        padding: 104px 24px 28px;
        background: rgba(8, 13, 28, .88);
        backdrop-filter: blur(22px) saturate(145%);
        -webkit-backdrop-filter: blur(22px) saturate(145%);
        border-left: 1px solid rgba(255, 255, 255, .09);
        transform: translateX(102%);
        transition: transform .28s ease-out;
        box-shadow: -20px 0 60px rgba(0, 0, 0, .45);
        overflow-y: auto;
      }

      body.nav-open .site-nav {
        transform: translateX(0);
      }

      .site-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
      }

      .site-nav .nav-link {
        justify-content: flex-start;
        padding: 0 16px;
        border-radius: 16px;
        font-size: 1.06rem;
        min-height: 50px;
      }

      .site-nav .nav-link.is-active {
        background: rgba(46, 107, 230, .16);
        box-shadow: inset 0 0 0 1px rgba(51, 224, 214, .08);
      }

      .site-nav .nav-link.is-active::after {
        left: auto;
        right: 14px;
        transform: none;
        bottom: auto;
      }

      .header-aside {
        display: none;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .header-inner {
        min-height: 74px;
      }

      .mobile-footer-note {
        display: block;
        margin-top: 36px;
        padding-top: 18px;
        border-top: 1px solid rgba(255, 255, 255, .07);
        font-size: .82rem;
        color: var(--text-muted);
      }

      .coverage-copy {
        padding-right: 0;
        margin-bottom: 34px;
      }

      .bottom-channel-card {
        flex-direction: column;
      }

      .bottom-channel-card .channel-media {
        flex: none;
        height: 170px;
      }
    }

    @media (max-width: 768px) {
      .section-block {
        padding: 74px 0;
      }

      .grid-container {
        padding-left: 20px;
        padding-right: 20px;
      }

      .category-hero {
        min-height: 62vh;
        padding: 58px 0 72px;
      }

      .hero-meta {
        gap: 10px 16px;
        flex-direction: column;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .cta-band {
        padding: 74px 0;
      }

      .cta-shell {
        padding: 40px 26px 36px;
      }

      .subscribe-form .btn-accent {
        width: 100%;
      }

      .footer-bottom {
        flex-direction: column;
        justify-content: flex-start;
      }
    }

    @media (max-width: 520px) {
      .brand-name {
        font-size: 1.1rem;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
      }

      .grid-container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .hero-title-note {
        margin-left: 0;
        margin-top: 12px;
        font-size: .28em;
      }

      .feature-panel-content {
        padding: 28px 20px;
      }

      .bottom-channel-card .channel-content {
        padding: 18px;
      }

      .mini-stack {
        gap: 18px;
      }

      .faq-item summary {
        padding: 16px 18px;
      }

      .faq-answer {
        padding: 0 20px 18px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
      }
    }

/* roulang page: category3 */
:root {
      --bg-deep: #060B18;
      --bg-main: #0B1226;
      --bg-elevated: #101A33;
      --surface-glass: rgba(17, 25, 48, 0.62);
      --stroke-glass: rgba(255, 255, 255, 0.09);
      --primary: #2E6BE6;
      --accent-cyan: #33E0D6;
      --accent-orange: #FF6A3D;
      --text-title: #F4F7FF;
      --text-body: #C3CDE3;
      --text-muted: #7C89A8;
      --radius: 20px;
      --radius-small: 10px;
      --transition-base: 0.25s ease-out;
      --shadow-card: 0 12px 32px rgba(3, 8, 22, 0.35);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg-main);
      color: var(--text-body);
      font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
      font-size: 1rem;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      font-variant-numeric: tabular-nums;
    }

    .grid-container {
      max-width: 1440px;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img {
      max-width: 100%;
      display: block;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6,
    p {
      margin: 0;
    }

    ul,
    ol,
    dl {
      margin: 0;
      padding: 0;
    }

    button {
      font-family: inherit;
      border: none;
      background: none;
      cursor: pointer;
    }

    :focus-visible {
      outline: 2px solid var(--accent-cyan);
      outline-offset: 3px;
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }

    /* ========== 基础按钮 ========== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      padding: 14px 28px;
      font-weight: 600;
      font-size: 0.95rem;
      line-height: 1.4;
      text-align: center;
      transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #2E6BE6, #4C62F0);
      color: #fff;
      box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06), 0 8px 30px rgba(46, 107, 230, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 12px 40px rgba(46, 107, 230, 0.5);
    }

    .btn-accent {
      background: linear-gradient(135deg, #FF6A3D, #FF8C42);
      color: #fff;
      box-shadow: 0 8px 26px rgba(255, 90, 55, 0.35);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 36px rgba(255, 106, 61, 0.52);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-title);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }

    .btn-ghost:hover {
      border-color: rgba(51, 224, 214, 0.72);
      color: var(--accent-cyan);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 9px 18px;
      font-size: 0.86rem;
    }

    .btn-block-mobile {
      width: auto;
    }

    /* ========== 顶栏 ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1080;
      background: rgba(6, 11, 24, 0.58);
      -webkit-backdrop-filter: blur(18px) saturate(140%);
      backdrop-filter: blur(18px) saturate(140%);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      transition: background 0.3s ease-out, box-shadow 0.3s ease-out;
    }

    .site-header.is-scrolled {
      background: rgba(6, 11, 24, 0.92);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 18px;
      min-height: 76px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand-mark {
      display: inline-flex;
      width: 38px;
      height: 38px;
      color: white;
    }

    .brand-mark svg {
      width: 100%;
      height: 100%;
      display: block;
    }

    .brand-name {
      color: var(--text-title);
      font-size: 1.28rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .site-nav {
      margin-left: clamp(18px, 3vw, 60px);
      margin-right: auto;
    }

    .nav-list {
      display: flex;
      list-style: none;
      gap: 2px;
    }

    .nav-link {
      display: inline-block;
      padding: 10px 16px;
      border-radius: 999px;
      color: var(--text-body);
      font-weight: 500;
      font-size: 0.95rem;
      transition: color var(--transition-base), background var(--transition-base);
      position: relative;
    }

    .nav-link:hover {
      color: var(--text-title);
      background: rgba(255, 255, 255, 0.06);
    }

    .nav-link.is-active {
      color: var(--text-title);
    }

    .nav-link.is-active::after {
      content: "";
      position: absolute;
      right: 17px;
      bottom: 7px;
      left: 17px;
      height: 2px;
      border-radius: 2px;
      background: var(--accent-cyan);
      box-shadow: 0 0 10px rgba(51, 224, 214, 0.7);
    }

    .header-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn-header-sub {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: var(--text-body);
      border-radius: 999px;
      padding: 9px 18px;
      font-size: 0.86rem;
      font-weight: 600;
      transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
    }

    .btn-header-sub:hover {
      color: var(--accent-cyan);
      border-color: rgba(51, 224, 214, 0.5);
      background: rgba(51, 224, 214, 0.07);
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-toggle span {
      position: relative;
      display: block;
      width: 18px;
      height: 2px;
      background: var(--text-title);
      border-radius: 2px;
      transition: background 0.2s ease;
    }

    .nav-toggle span::before,
    .nav-toggle span::after {
      content: "";
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--text-title);
      border-radius: 2px;
      transition: transform 0.25s ease, top 0.25s ease;
    }

    .nav-toggle span::before {
      top: -6px;
    }

    .nav-toggle span::after {
      top: 6px;
    }

    body.nav-open .nav-toggle span {
      background: transparent;
    }

    body.nav-open .nav-toggle span::before {
      top: 0;
      transform: rotate(45deg);
    }

    body.nav-open .nav-toggle span::after {
      top: 0;
      transform: rotate(-45deg);
    }

    .nav-mobile-cta {
      display: none;
    }

    .nav-mask {
      display: none;
    }

    /* ========== 分类 Hero ========== */
    .category-hero {
      position: relative;
      padding: clamp(64px, 8vw, 128px) 0 clamp(56px, 6vw, 92px);
      background:
        linear-gradient(105deg, rgba(6, 11, 24, 0.97) 18%, rgba(6, 11, 24, 0.66) 58%, rgba(11, 18, 38, 0.42) 100%),
        url("/assets/images/backpic/back-3.webp") center / cover no-repeat;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .category-hero::after {
      content: "";
      position: absolute;
      right: -160px;
      bottom: -160px;
      width: 520px;
      height: 520px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(46, 107, 230, 0.16), rgba(46, 107, 230, 0) 70%);
      pointer-events: none;
    }

    .category-hero-grid {
      position: relative;
      z-index: 2;
    }

    .hero-content {
      max-width: 840px;
    }

    .hero-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(51, 224, 214, 0.08);
      border: 1px solid rgba(51, 224, 214, 0.22);
      color: #9ceee9;
      border-radius: 999px;
      padding: 6px 14px;
      font-size: 0.85rem;
      margin-bottom: 24px;
    }

    .hero-chip::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-orange);
      box-shadow: 0 0 0 4px rgba(255, 106, 61, 0.16);
    }

    .category-title {
      color: var(--text-title);
      font-size: clamp(2.4rem, 5.2vw + 0.6rem, 4.6rem);
      line-height: 1.08;
      letter-spacing: -0.01em;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .category-title .accent-title {
      display: block;
      background: linear-gradient(120deg, #fff, #9FB9FF 58%, var(--accent-cyan));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      font-size: 0.74em;
      font-weight: 700;
      margin-top: 6px;
    }

    .hero-desc {
      max-width: 720px;
      font-size: clamp(1rem, 1.1vw + 0.7rem, 1.16rem);
      line-height: 1.8;
      color: #d4deef;
      margin-bottom: 30px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .scroll-hint {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      font-size: 0.78rem;
      margin-top: 56px;
    }

    .scroll-hint span {
      display: block;
      width: 1px;
      height: 34px;
      background: linear-gradient(to bottom, rgba(255, 255, 255, 0.35), transparent);
      position: relative;
      overflow: hidden;
    }

    .scroll-hint span::after {
      content: "";
      position: absolute;
      left: 0;
      top: -12px;
      width: 100%;
      height: 14px;
      background: var(--accent-cyan);
      animation: scrollLine 2s ease-out infinite;
    }

    @keyframes scrollLine {
      0% {
        transform: translateY(0);
      }
      60%,
      100% {
        transform: translateY(44px);
      }
    }

    /* ========== 板块通用 ========== */
    .page-section {
      padding: clamp(52px, 7vw, 96px) 0;
    }

    .section-em {
      padding-top: clamp(28px, 4vw, 52px);
    }

    .section-head {
      max-width: 860px;
      margin-bottom: clamp(26px, 4vw, 48px);
    }

    .eyebrow {
      display: block;
      color: var(--accent-cyan);
      font-size: 0.82rem;
      letter-spacing: 0.1em;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .section-title {
      color: var(--text-title);
      font-size: clamp(1.8rem, 2.8vw + 0.5rem, 2.8rem);
      line-height: 1.2;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .section-sub {
      color: var(--text-muted);
      max-width: 720px;
      line-height: 1.7;
      font-size: 1rem;
    }

    /* ========== 工具条 ========== */
    .toolbar-panel {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      padding: 14px 18px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      background: rgba(14, 22, 45, 0.72);
    }

    .toolbar-caption {
      color: var(--text-body);
      font-size: 0.9rem;
    }

    .filter-tabs {
      display: inline-flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      padding: 5px;
      border-radius: 999px;
    }

    .filter-tab {
      padding: 8px 16px;
      border-radius: 999px;
      color: var(--text-muted);
      font-size: 0.87rem;
      font-weight: 500;
      line-height: 1.2;
      transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
    }

    .filter-tab:hover {
      color: var(--text-title);
    }

    .filter-tab.is-active {
      background: rgba(51, 224, 214, 0.12);
      color: #b8fff9;
      box-shadow: 0 0 0 1px rgba(51, 224, 214, 0.22);
    }

    .toolbar-note {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* ========== 内容方向卡片 ========== */
    .hub-card {
      height: 100%;
      display: flex;
      flex-direction: column;
      background: linear-gradient(180deg, rgba(22, 34, 62, 0.92), rgba(11, 18, 38, 0.94));
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      overflow: hidden;
      transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
      position: relative;
    }

    .hub-card:hover {
      transform: translateY(-4px);
      border-color: rgba(51, 224, 214, 0.4);
      box-shadow: 0 18px 40px rgba(3, 8, 22, 0.4), 0 0 24px rgba(51, 224, 214, 0.1);
    }

    .hub-media {
      height: 168px;
      overflow: hidden;
      position: relative;
    }

    .hub-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease-out;
    }

    .hub-card:hover .hub-media img {
      transform: scale(1.04);
    }

    .hub-badge {
      position: absolute;
      left: 14px;
      top: 14px;
      background: rgba(6, 11, 24, 0.55);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: var(--text-title);
      font-size: 0.78rem;
      padding: 5px 12px;
      border-radius: 999px;
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
    }

    .hub-body {
      padding: 22px 20px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .hub-body h3 {
      color: var(--text-title);
      font-size: 1.3rem;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 10px;
    }

    .hub-body p {
      color: var(--text-muted);
      font-size: 0.93rem;
      line-height: 1.7;
      margin-bottom: 18px;
      flex: 1;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent-cyan);
      font-size: 0.9rem;
      font-weight: 600;
      transition: color var(--transition-base), gap var(--transition-base);
    }

    .card-link::after {
      content: "→";
      display: inline-block;
      color: var(--accent-cyan);
      transition: transform 0.2s ease;
    }

    .card-link:hover {
      color: #eafffc;
    }

    .card-link:hover::after {
      transform: translateX(4px);
    }

    /* ========== 精选内容区 ========== */
    .focus-panel {
      margin-top: 48px;
    }

    .focus-main {
      position: relative;
      width: 100%;
      height: 100%;
      min-height: 520px;
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      align-items: flex-end;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-card);
    }

    .focus-media {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .focus-media-overlay {
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(6, 11, 24, 0.95) 4%, rgba(6, 11, 24, 0.4) 58%, rgba(6, 11, 24, 0.25) 100%),
        linear-gradient(0deg, rgba(6, 11, 24, 0.92) 0%, rgba(6, 11, 24, 0.22) 52%, transparent 100%);
    }

    .focus-content {
      position: relative;
      z-index: 2;
      padding: clamp(22px, 3vw, 38px);
      max-width: 640px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-title);
      border-radius: 999px;
      padding: 5px 12px;
      font-size: 0.78rem;
      margin-bottom: 12px;
    }

    .chip::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-orange);
      box-shadow: 0 0 8px rgba(255, 106, 61, 0.8);
    }

    .focus-content h3 {
      font-size: clamp(1.45rem, 2vw + 0.4rem, 2.15rem);
      line-height: 1.3;
      color: var(--text-title);
      font-weight: 700;
      margin-bottom: 12px;
    }

    .focus-content p {
      color: #d0dbf0;
      line-height: 1.8;
      margin-bottom: 20px;
      font-size: 0.98rem;
    }

    .focus-main .card-link {
      position: relative;
      z-index: 3;
    }

    .stack-minis {
      display: flex;
      flex-direction: column;
      gap: 22px;
      height: 100%;
    }

    .mini-feature {
      border-radius: var(--radius);
      overflow: hidden;
      background: linear-gradient(180deg, rgba(22, 34, 62, 0.9), rgba(11, 18, 38, 0.95));
      border: 1px solid rgba(255, 255, 255, 0.08);
      height: 100%;
      flex: 1;
      display: flex;
      flex-direction: column;
      transition: transform var(--transition-base), border-color var(--transition-base);
    }

    .mini-feature:hover {
      transform: translateY(-3px);
      border-color: rgba(51, 224, 214, 0.3);
    }

    .mini-media {
      height: 155px;
      overflow: hidden;
      position: relative;
    }

    .mini-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .mini-feature:hover .mini-media img {
      transform: scale(1.04);
    }

    .mini-body {
      padding: 18px 20px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .mini-title {
      color: var(--text-title);
      font-size: 1.1rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 7px;
    }

    .mini-desc {
      color: var(--text-muted);
      font-size: 0.88rem;
      line-height: 1.65;
      margin-bottom: 12px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .mini-meta {
      font-size: 0.82rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .mini-meta .card-link {
      font-size: 0.85rem;
    }

    /* ========== 阅读路径区 ========== */
    .route-list {
      margin-top: 30px;
    }

    .route-card {
      background: rgba(15, 23, 43, 0.84);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      padding: 30px 26px;
      height: 100%;
      position: relative;
      transition: transform var(--transition-base), border-color var(--transition-base);
    }

    .route-card:hover {
      transform: translateY(-3px);
      border-color: rgba(51, 224, 214, 0.34);
    }

    .route-index {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: rgba(255, 106, 61, 0.14);
      color: var(--accent-orange);
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 16px;
    }

    .route-card h3 {
      color: var(--text-title);
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .route-card p {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

    /* ========== FAQ ========== */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: rgba(15, 23, 44, 0.78);
      border: 1px solid rgba(255, 255, 255, 0.09);
      border-radius: 16px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color var(--transition-base);
    }

    .faq-item[open] {
      border-color: rgba(51, 224, 214, 0.42);
    }

    .faq-item summary {
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 20px 24px;
      color: var(--text-title);
      font-weight: 600;
      font-size: 1.02rem;
      cursor: pointer;
      position: relative;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      font-size: 1.4rem;
      color: var(--accent-orange);
      line-height: 1;
      transition: transform 0.2s ease;
      flex-shrink: 0;
    }

    .faq-item[open] summary::after {
      transform: rotate(45deg);
    }

    .faq-item[open] summary::before {
      content: "";
      position: absolute;
      left: 0;
      top: 18px;
      bottom: 18px;
      width: 3px;
      border-radius: 3px;
      background: var(--accent-orange);
    }

    .faq-answer {
      padding: 2px 26px 22px 28px;
      color: var(--text-muted);
      line-height: 1.8;
      font-size: 0.94rem;
    }

    .faq-answer a {
      color: var(--accent-cyan);
      border-bottom: 1px solid rgba(51, 224, 214, 0.3);
      transition: color var(--transition-base);
    }

    .faq-answer a:hover {
      color: #fff;
    }

    /* ========== CTA ========== */
    .cta-panel {
      position: relative;
      padding: clamp(40px, 7vw, 80px) clamp(22px, 5vw, 70px);
      background:
        linear-gradient(110deg, rgba(6, 11, 24, 0.92) 25%, rgba(15, 28, 60, 0.7) 75%),
        url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
      border-radius: 30px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      overflow: hidden;
      text-align: center;
    }

    .cta-panel h2 {
      color: var(--text-title);
      font-size: clamp(1.5rem, 2.2vw + 0.4rem, 2.4rem);
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 14px;
    }

    .cta-panel p {
      max-width: 700px;
      margin: 0 auto 30px;
      color: #d3dae8;
      font-size: 1rem;
      line-height: 1.8;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: #050914;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0 32px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }

    .footer-logo .brand-mark {
      width: 34px;
      height: 34px;
      color: #fff;
    }

    .footer-logo .brand-name {
      font-size: 1.2rem;
      font-weight: 700;
    }

    .footer-tagline {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.7;
      max-width: 340px;
      margin-bottom: 18px;
    }

    .footer-social {
      display: flex;
      gap: 10px;
    }

    .footer-social a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      color: var(--text-muted);
      transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
    }

    .footer-social a svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }

    .footer-social a:hover {
      color: var(--accent-cyan);
      border-color: rgba(51, 224, 214, 0.4);
      background: rgba(51, 224, 214, 0.08);
    }

    .footer-col-title {
      color: var(--text-title);
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-list,
    .footer-contact-list {
      list-style: none;
    }

    .footer-list li,
    .footer-contact-list li {
      margin-bottom: 10px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-list a {
      color: var(--text-muted);
      font-size: 0.9rem;
      transition: color var(--transition-base), padding-left var(--transition-base);
    }

    .footer-list a:hover {
      color: var(--accent-cyan);
      padding-left: 2px;
    }

    .footer-contact-list span {
      display: inline-block;
      line-height: 1.6;
    }

    .footer-bottom {
      margin-top: 38px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--text-muted);
      font-size: 0.84rem;
    }

    .footer-bottom-domain {
      color: var(--text-muted);
    }

    /* ========== 响应式 ========== */
    @media screen and (max-width: 1024px) {
      .grid-container {
        padding-left: 20px;
        padding-right: 20px;
      }

      .header-inner {
        padding-left: 20px;
        padding-right: 20px;
      }

      .site-nav {
        margin-left: 10px;
      }

      .nav-list {
        gap: 0;
      }

      .nav-link {
        padding: 9px 12px;
        font-size: 0.9rem;
      }

      .brand-name {
        font-size: 1.12rem;
      }

      .stack-minis {
        gap: 18px;
        margin-top: 18px;
      }

      .focus-main {
        min-height: 460px;
      }
    }

    @media screen and (max-width: 900px) {
      .site-header {
        position: sticky;
      }

      .brand-logo {
        z-index: 1095;
        position: relative;
      }

      .nav-toggle {
        display: inline-flex;
        z-index: 1095;
        position: relative;
      }

      .header-cta .btn-header-sub {
        display: none;
      }

      .site-nav {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(84vw, 370px);
        height: 100vh;
        margin: 0;
        padding: 96px 22px 28px;
        background: rgba(7, 12, 26, 0.96);
        -webkit-backdrop-filter: blur(20px) saturate(140%);
        backdrop-filter: blur(20px) saturate(140%);
        transform: translateX(-105%);
        transition: transform 0.3s ease-out;
        z-index: 1085;
        overflow-y: auto;
        border-right: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
      }

      body.nav-open .site-nav {
        transform: translateX(0);
      }

      .nav-list {
        flex-direction: column;
        gap: 4px;
      }

      .nav-list li {
        width: 100%;
      }

      .nav-link {
        display: block;
        padding: 13px 16px;
        font-size: 1.02rem;
        border-radius: 14px;
      }

      .nav-link.is-active {
        background: rgba(51, 224, 214, 0.08);
      }

      .nav-link.is-active::after {
        right: auto;
        left: 17px;
        width: 22px;
        height: 2px;
      }

      .nav-mobile-cta {
        display: flex;
        margin-top: 26px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
      }

      .nav-mobile-cta .btn {
        width: 100%;
      }

      .nav-mask {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(3, 5, 12, 0.62);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        z-index: 1080;
      }

      body.nav-open .nav-mask {
        opacity: 1;
        pointer-events: auto;
      }
    }

    @media screen and (max-width: 767px) {
      .page-section {
        padding-bottom: 56px;
        padding-top: 48px;
      }

      .hero-desc {
        font-size: 0.97rem;
      }

      .hero-actions .btn {
        flex: 1 1 auto;
      }

      .filter-tabs {
        width: 100%;
        justify-content: space-between;
      }

      .filter-tab {
        flex: 1;
        text-align: center;
      }

      .toolbar-caption,
      .toolbar-note {
        font-size: 0.82rem;
      }

      .focus-main {
        min-height: 440px;
      }

      .mini-media {
        height: 165px;
      }

      .route-card {
        margin-bottom: 14px;
      }

      .cta-panel {
        border-radius: 22px;
      }

      .cta-actions .btn {
        width: 100%;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media screen and (max-width: 520px) {
      .grid-container,
      .header-inner {
        padding-left: 16px;
        padding-right: 16px;
      }

      .brand-mark {
        width: 32px;
        height: 32px;
      }

      .brand-name {
        font-size: 1.04rem;
      }

      .category-title {
        font-size: clamp(2rem, 8.6vw, 3rem);
      }

      .hero-actions .btn {
        width: 100%;
      }

      .scroll-hint {
        margin-top: 44px;
      }

      .section-title {
        font-size: 1.7rem;
      }

      .focus-content h3 {
        font-size: 1.3rem;
      }

      .focus-main {
        border-radius: 18px;
      }

      .hub-media {
        height: 190px;
      }

      .mini-feature {
        margin-bottom: 14px;
      }

      .stack-minis {
        height: auto;
        display: block;
      }

      .mini-feature {
        height: auto;
        flex: none;
      }

      .mini-media {
        height: 150px;
      }

      .btn {
        padding: 13px 20px;
      }
    }