/* roulang page: index */
:root {
      --bg: #f3f1ea;
      --bg-soft: #e8e3d8;
      --ink: #151719;
      --graphite: #252a2d;
      --muted: #666b68;
      --line: rgba(21, 23, 25, .14);
      --line-dark: rgba(243, 241, 234, .16);
      --olive: #6f7d4b;
      --amber: #c59b4a;
      --warn: #7a3b32;
      --white: #fffdf7;
      --radius: 8px;
      --radius-sm: 5px;
      --shadow: 0 14px 36px rgba(0, 0, 0, .12);
      --shadow-soft: 0 10px 28px rgba(21, 23, 25, .08);
      --container: 1200px;
      --nav-h: 72px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--ink);
      background: var(--bg);
      line-height: 1.72;
      font-size: 16px;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .18s ease, border-color .18s ease, background .18s ease, transform .18s ease;
    }

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

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

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

    .site-header {
      position: fixed;
      top: 0;
      right: 0;
      left: 0;
      z-index: 1000;
      background: rgba(21, 23, 25, .88);
      border-bottom: 1px solid var(--line-dark);
      backdrop-filter: blur(14px);
    }

    .navbar {
      min-height: var(--nav-h);
      padding: 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--white);
      font-weight: 800;
      font-size: 18px;
      line-height: 1.2;
      max-width: 420px;
      white-space: normal;
      letter-spacing: 0;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      border: 1px solid rgba(197, 155, 74, .72);
      border-radius: 50%;
      position: relative;
      background:
        linear-gradient(90deg, transparent 48%, rgba(197,155,74,.62) 49%, rgba(197,155,74,.62) 51%, transparent 52%),
        linear-gradient(0deg, transparent 48%, rgba(197,155,74,.62) 49%, rgba(197,155,74,.62) 51%, transparent 52%),
        radial-gradient(circle at center, rgba(111,125,75,.24), transparent 58%);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 10px;
      border: 1px solid rgba(243, 241, 234, .55);
      border-radius: 50%;
    }

    .navbar-toggler {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-sm);
      padding: 8px 10px;
      box-shadow: none;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(197, 155, 74, .28);
    }

    .navbar-toggler-icon {
      filter: invert(1) grayscale(1);
    }

    .nav-link {
      color: rgba(243, 241, 234, .78);
      font-weight: 600;
      padding: 10px 14px !important;
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }

    .nav-link:hover,
    .nav-link:focus {
      color: var(--white);
      background: rgba(255, 255, 255, .06);
    }

    .nav-link.active {
      color: var(--amber) !important;
      background: rgba(197, 155, 74, .10);
    }

    .nav-verify {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 12px;
      border: 1px solid rgba(122, 59, 50, .7);
      border-radius: var(--radius-sm);
      color: #f0d7c8;
      font-weight: 700;
      font-size: 13px;
      background: rgba(122, 59, 50, .18);
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--amber);
      box-shadow: 0 0 0 4px rgba(197, 155, 74, .16);
      flex: 0 0 auto;
    }

    main {
      overflow: hidden;
    }

    section {
      padding: 88px 0;
    }

    .section-dark {
      background: var(--ink);
      color: var(--white);
      position: relative;
    }

    .section-soft {
      background: var(--bg-soft);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      font-size: 13px;
      font-weight: 800;
      color: var(--olive);
      text-transform: none;
      margin-bottom: 14px;
    }

    .eyebrow::before {
      content: "";
      width: 28px;
      height: 1px;
      background: currentColor;
    }

    .section-dark .eyebrow {
      color: var(--amber);
    }

    .section-title {
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.18;
      font-weight: 800;
      margin: 0 0 18px;
      letter-spacing: 0;
    }

    .section-lead {
      max-width: 760px;
      color: var(--muted);
      margin: 0;
      font-size: 17px;
    }

    .section-dark .section-lead,
    .section-dark .muted {
      color: rgba(243, 241, 234, .72);
    }

    .btn {
      border-radius: var(--radius-sm);
      font-weight: 800;
      padding: 12px 18px;
      border-width: 1px;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
    }

    .btn:focus-visible {
      outline: 0;
      box-shadow: 0 0 0 4px rgba(111, 125, 75, .28);
    }

    .btn-main {
      background: var(--amber);
      color: var(--ink);
      border-color: var(--amber);
      box-shadow: 0 12px 22px rgba(197, 155, 74, .22);
    }

    .btn-main:hover {
      transform: translateY(-1px);
      background: #d0a85b;
      border-color: #d0a85b;
      color: var(--ink);
      box-shadow: 0 16px 30px rgba(197, 155, 74, .28);
    }

    .btn-ghost {
      color: var(--white);
      border-color: rgba(243, 241, 234, .35);
      background: rgba(243, 241, 234, .04);
    }

    .btn-ghost:hover {
      transform: translateY(-1px);
      color: var(--white);
      border-color: var(--amber);
      background: rgba(197, 155, 74, .12);
    }

    .btn-darkline {
      color: var(--ink);
      border-color: rgba(21, 23, 25, .26);
      background: transparent;
    }

    .btn-darkline:hover {
      transform: translateY(-1px);
      border-color: var(--ink);
      background: rgba(21, 23, 25, .05);
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: var(--radius-sm);
      padding: 5px 8px;
      font-size: 12px;
      font-weight: 800;
      color: var(--graphite);
      background: rgba(111, 125, 75, .13);
      border: 1px solid rgba(111, 125, 75, .22);
      line-height: 1.2;
    }

    .tag.warn {
      color: #6b2b24;
      background: rgba(122, 59, 50, .10);
      border-color: rgba(122, 59, 50, .24);
    }

    .hero {
      min-height: 690px;
      padding: calc(var(--nav-h) + 54px) 0 72px;
      color: var(--white);
      background:
        linear-gradient(90deg, rgba(21,23,25,.96), rgba(21,23,25,.78) 48%, rgba(21,23,25,.9)),
        radial-gradient(circle at 78% 30%, rgba(197,155,74,.18), transparent 28%),
        linear-gradient(0deg, rgba(243,241,234,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(243,241,234,.05) 1px, transparent 1px),
        #151719;
      background-size: auto, auto, 46px 46px, 46px 46px, auto;
      position: relative;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 96px 5vw 48px;
      border: 1px solid rgba(243, 241, 234, .10);
      pointer-events: none;
    }

    .hero::after {
      content: "";
      position: absolute;
      right: 12%;
      top: 19%;
      width: 260px;
      height: 260px;
      border: 1px solid rgba(197,155,74,.24);
      background:
        linear-gradient(90deg, transparent 49%, rgba(197,155,74,.16) 50%, transparent 51%),
        linear-gradient(0deg, transparent 49%, rgba(197,155,74,.16) 50%, transparent 51%);
      opacity: .8;
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
      gap: 46px;
      align-items: center;
    }

    .hero-copy {
      max-width: 760px;
    }

    .hero h1 {
      font-size: clamp(34px, 5.4vw, 68px);
      line-height: 1.08;
      font-weight: 800;
      letter-spacing: 0;
      margin: 0 0 22px;
    }

    .hero-intro {
      font-size: 18px;
      color: rgba(243, 241, 234, .76);
      max-width: 720px;
      margin: 0 0 26px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 28px 0 0;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 660px;
      margin-top: 28px;
    }

    .metric {
      border: 1px solid var(--line-dark);
      background: rgba(243, 241, 234, .055);
      padding: 14px 14px 12px;
      border-radius: var(--radius);
    }

    .metric strong {
      display: block;
      font-size: 22px;
      line-height: 1.1;
      color: var(--amber);
      margin-bottom: 4px;
    }

    .metric span {
      display: block;
      color: rgba(243, 241, 234, .67);
      font-size: 13px;
      line-height: 1.45;
    }

    .slot-panel {
      border: 1px solid rgba(243, 241, 234, .16);
      border-radius: var(--radius);
      background: rgba(37, 42, 45, .82);
      box-shadow: var(--shadow);
      padding: 18px;
      position: relative;
      overflow: hidden;
    }

    .slot-panel::before {
      content: "18+";
      position: absolute;
      right: 16px;
      top: 14px;
      color: rgba(243, 241, 234, .18);
      font-size: 50px;
      font-weight: 800;
      line-height: 1;
    }

    .panel-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
      position: relative;
    }

    .panel-head strong {
      display: block;
      color: var(--white);
      font-size: 18px;
      line-height: 1.3;
    }

    .panel-head small {
      color: rgba(243, 241, 234, .58);
      font-weight: 700;
    }

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

    .slot-item {
      display: grid;
      grid-template-columns: 72px minmax(0, 1fr) auto;
      align-items: center;
      gap: 12px;
      padding: 13px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(243, 241, 234, .13);
      background: rgba(21, 23, 25, .38);
    }

    .slot-item:hover {
      border-color: rgba(197, 155, 74, .48);
      background: rgba(197, 155, 74, .08);
    }

    .slot-time {
      color: var(--amber);
      font-weight: 800;
      font-size: 13px;
    }

    .slot-title {
      color: var(--white);
      font-weight: 800;
      line-height: 1.35;
    }

    .slot-note {
      color: rgba(243, 241, 234, .62);
      font-size: 13px;
      margin-top: 2px;
    }

    .slot-state {
      font-size: 12px;
      font-weight: 800;
      color: #d9e2bf;
      border: 1px solid rgba(111, 125, 75, .55);
      background: rgba(111, 125, 75, .20);
      padding: 5px 8px;
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }

    .visual-stage {
      background: var(--bg);
    }

    .stage-wrap {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 34px;
      align-items: stretch;
      margin-top: 38px;
    }

    .stage-map {
      min-height: 420px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background:
        linear-gradient(0deg, rgba(21,23,25,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(21,23,25,.055) 1px, transparent 1px),
        linear-gradient(135deg, rgba(111,125,75,.20), rgba(255,255,255,.4)),
        var(--white);
      background-size: 34px 34px, 34px 34px, auto, auto;
      box-shadow: var(--shadow-soft);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .stage-map::after {
      content: "";
      position: absolute;
      inset: 24px;
      border: 1px dashed rgba(21, 23, 25, .18);
      pointer-events: none;
    }

    .stage-chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      position: relative;
      z-index: 1;
    }

    .coordinate-card {
      width: min(320px, 100%);
      margin-left: auto;
      position: relative;
      z-index: 1;
      background: var(--ink);
      color: var(--white);
      border-radius: var(--radius);
      padding: 18px;
      border: 1px solid rgba(197, 155, 74, .32);
    }

    .coordinate-card b {
      display: block;
      font-size: 20px;
      margin-bottom: 8px;
    }

    .coordinate-card p {
      color: rgba(243, 241, 234, .68);
      margin: 0;
      font-size: 14px;
    }

    .stage-list {
      display: grid;
      gap: 14px;
    }

    .file-card {
      border: 1px solid var(--line);
      background: var(--white);
      border-radius: var(--radius);
      padding: 18px;
      box-shadow: var(--shadow-soft);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }

    .file-card:hover {
      transform: translateY(-2px);
      border-color: rgba(197, 155, 74, .55);
      box-shadow: var(--shadow);
    }

    .file-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 10px;
    }

    .file-code {
      color: var(--amber);
      font-size: 13px;
      font-weight: 800;
    }

    .file-card h3 {
      font-size: 20px;
      line-height: 1.35;
      margin: 0 0 8px;
      font-weight: 800;
    }

    .file-card p {
      color: var(--muted);
      margin: 0 0 14px;
      font-size: 15px;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .timeline {
      position: relative;
      margin-top: 42px;
    }

    .timeline-grid {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px;
      position: relative;
    }

    .timeline-grid::before {
      content: "";
      position: absolute;
      left: 8%;
      right: 8%;
      top: 31px;
      height: 1px;
      background: rgba(197, 155, 74, .34);
    }

    .time-step {
      position: relative;
      z-index: 1;
      border: 1px solid var(--line-dark);
      background: rgba(243, 241, 234, .055);
      border-radius: var(--radius);
      padding: 18px;
      min-height: 210px;
    }

    .step-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--amber);
      color: var(--ink);
      font-weight: 900;
      margin-bottom: 18px;
      font-size: 13px;
    }

    .time-step h3 {
      font-size: 18px;
      margin: 0 0 8px;
      font-weight: 800;
    }

    .time-step p {
      color: rgba(243, 241, 234, .68);
      font-size: 14px;
      margin: 0;
    }

    .highlight-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-top: 40px;
    }

    .highlight-card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--white);
      padding: 20px;
      box-shadow: var(--shadow-soft);
    }

    .highlight-card.wide {
      grid-column: span 2;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 20px;
      align-items: center;
    }

    .highlight-card h3 {
      font-size: 21px;
      font-weight: 800;
      margin: 10px 0 8px;
    }

    .highlight-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .mini-stat {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }

    .mini-stat div {
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      padding: 13px;
      background: rgba(111, 125, 75, .08);
    }

    .mini-stat strong {
      display: block;
      color: var(--olive);
      font-size: 22px;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .plan-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      margin-top: 42px;
    }

    .plan-card {
      border-radius: var(--radius);
      border: 1px solid var(--line-dark);
      background: rgba(243, 241, 234, .055);
      color: var(--white);
      padding: 22px;
      min-height: 100%;
      position: relative;
    }

    .plan-card.featured {
      border-color: rgba(197, 155, 74, .7);
      box-shadow: 0 0 0 1px rgba(197, 155, 74, .20), 0 18px 42px rgba(0, 0, 0, .22);
      background: rgba(197, 155, 74, .10);
    }

    .plan-card h3 {
      font-size: 23px;
      margin: 14px 0 6px;
      font-weight: 800;
    }

    .plan-kicker {
      color: var(--amber);
      font-weight: 800;
      font-size: 13px;
    }

    .plan-card p {
      color: rgba(243, 241, 234, .68);
      margin: 0 0 18px;
      font-size: 15px;
    }

    .plan-list {
      list-style: none;
      padding: 0;
      margin: 0 0 20px;
      display: grid;
      gap: 10px;
    }

    .plan-list li {
      display: flex;
      gap: 9px;
      color: rgba(243, 241, 234, .76);
      font-size: 14px;
    }

    .plan-list li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--olive);
      margin-top: 9px;
      flex: 0 0 auto;
    }

    .reviews-wrap {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 30px;
      align-items: start;
      margin-top: 42px;
    }

    .score-box {
      background: var(--ink);
      color: var(--white);
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid rgba(197, 155, 74, .26);
      box-shadow: var(--shadow);
    }

    .score-box strong {
      display: block;
      font-size: 50px;
      line-height: 1;
      color: var(--amber);
      margin-bottom: 8px;
    }

    .score-box p {
      color: rgba(243, 241, 234, .68);
      margin: 0;
    }

    .review-list {
      display: grid;
      gap: 14px;
    }

    .review-item {
      border: 1px solid var(--line);
      background: var(--white);
      border-radius: var(--radius);
      padding: 18px;
      box-shadow: var(--shadow-soft);
    }

    .review-item p {
      margin: 0 0 12px;
      color: var(--graphite);
      font-size: 15px;
    }

    .review-author {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.35fr .65fr;
      gap: 26px;
      margin-top: 42px;
    }

    .news-list {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--white);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
    }

    .news-row {
      display: grid;
      grid-template-columns: 130px minmax(0, 1fr) auto;
      gap: 16px;
      align-items: center;
      padding: 18px;
      border-bottom: 1px solid var(--line);
    }

    .news-row:last-child {
      border-bottom: 0;
    }

    .news-row:hover {
      background: rgba(111, 125, 75, .07);
    }

    .news-date {
      color: var(--olive);
      font-weight: 900;
      font-size: 13px;
    }

    .news-row h3 {
      font-size: 18px;
      margin: 0 0 4px;
      font-weight: 800;
    }

    .news-row p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .news-action {
      color: var(--ink);
      font-weight: 800;
      white-space: nowrap;
      border-bottom: 1px solid rgba(21, 23, 25, .22);
    }

    .recommend-box {
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: var(--graphite);
      color: var(--white);
      padding: 22px;
      min-height: 100%;
    }

    .recommend-box h3 {
      font-weight: 800;
      margin: 12px 0 10px;
      font-size: 22px;
    }

    .recommend-box p {
      color: rgba(243, 241, 234, .68);
      margin-bottom: 18px;
      font-size: 15px;
    }

    .accordion {
      margin-top: 40px;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .accordion-item {
      border: 0;
      border-bottom: 1px solid var(--line);
      background: var(--white);
    }

    .accordion-item:last-child {
      border-bottom: 0;
    }

    .accordion-button {
      font-weight: 800;
      color: var(--ink);
      background: var(--white);
      padding: 18px 20px;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      color: var(--ink);
      background: rgba(197, 155, 74, .12);
      box-shadow: none;
    }

    .accordion-button:focus {
      border-color: transparent;
      box-shadow: 0 0 0 4px rgba(197, 155, 74, .20);
      z-index: 2;
    }

    .accordion-button::after {
      filter: sepia(1) saturate(2) hue-rotate(350deg);
    }

    .accordion-body {
      color: var(--muted);
      padding: 0 20px 20px;
      background: var(--white);
    }

    .cta-band {
      padding: 72px 0;
      background:
        linear-gradient(90deg, rgba(21,23,25,.96), rgba(37,42,45,.92)),
        linear-gradient(0deg, rgba(243,241,234,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(243,241,234,.05) 1px, transparent 1px);
      background-size: auto, 38px 38px, 38px 38px;
      color: var(--white);
    }

    .cta-box {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
      border: 1px solid var(--line-dark);
      border-radius: var(--radius);
      padding: 28px;
      background: rgba(243, 241, 234, .045);
    }

    .cta-box h2 {
      font-size: clamp(26px, 4vw, 42px);
      font-weight: 800;
      margin: 0 0 10px;
    }

    .cta-box p {
      color: rgba(243, 241, 234, .70);
      margin: 0;
      max-width: 780px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
    }

    .site-footer {
      background: var(--ink);
      color: rgba(243, 241, 234, .72);
      padding: 52px 0 28px;
      border-top: 1px solid var(--line-dark);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 28px;
      margin-bottom: 34px;
    }

    .footer-brand {
      color: var(--white);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-title {
      color: var(--white);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 8px;
    }

    .footer-links a:hover {
      color: var(--amber);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding-top: 22px;
      border-top: 1px solid var(--line-dark);
      font-size: 13px;
      flex-wrap: wrap;
    }

    @media (max-width: 991.98px) {
      .navbar-collapse {
        padding: 14px 0 18px;
      }

      .nav-verify {
        margin-top: 8px;
        width: fit-content;
      }

      .hero {
        min-height: auto;
        padding-top: calc(var(--nav-h) + 34px);
      }

      .hero-grid,
      .stage-wrap,
      .reviews-wrap,
      .news-layout,
      .cta-box {
        grid-template-columns: 1fr;
      }

      .hero::after {
        width: 180px;
        height: 180px;
        right: 4%;
        top: 16%;
      }

      .hero-metrics,
      .mini-stat {
        grid-template-columns: repeat(3, 1fr);
      }

      .timeline-grid {
        grid-template-columns: 1fr;
      }

      .timeline-grid::before {
        left: 31px;
        right: auto;
        top: 20px;
        bottom: 20px;
        width: 1px;
        height: auto;
      }

      .time-step {
        min-height: auto;
      }

      .highlight-card.wide {
        grid-template-columns: 1fr;
      }

      .plan-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .cta-actions {
        justify-content: flex-start;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 767.98px) {
      section {
        padding: 58px 0;
      }

      .navbar-brand {
        font-size: 15px;
        max-width: 270px;
      }

      .hero h1 {
        font-size: 34px;
      }

      .hero-intro {
        font-size: 16px;
      }

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

      .hero-metrics {
        grid-template-columns: 1fr;
      }

      .slot-item {
        grid-template-columns: 1fr;
        align-items: start;
      }

      .slot-state {
        width: fit-content;
      }

      .stage-map {
        min-height: 320px;
      }

      .highlight-layout,
      .plan-grid {
        grid-template-columns: 1fr;
      }

      .highlight-card.wide {
        grid-column: span 1;
      }

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

      .news-action {
        width: fit-content;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-bottom {
        display: grid;
      }
    }

    @media (max-width: 520px) {
      :root {
        --nav-h: 66px;
      }

      .brand-mark {
        width: 30px;
        height: 30px;
        flex-basis: 30px;
      }

      .hero {
        padding-bottom: 50px;
      }

      .section-title {
        font-size: 28px;
      }

      .file-top,
      .review-author {
        display: grid;
      }

      .cta-box {
        padding: 20px;
      }
    }

/* roulang page: category2 */
:root{
      --ink:#151719;
      --graphite:#252a2d;
      --graphite-2:#30363a;
      --olive:#6f7d4b;
      --olive-soft:#e4e8d8;
      --amber:#c59b4a;
      --amber-soft:#f1e4c7;
      --mist:#f3f1ea;
      --paper:#fbfaf6;
      --line:rgba(21,23,25,.14);
      --line-dark:rgba(243,241,234,.16);
      --muted:#6e7477;
      --danger:#7a3b32;
      --white:#fff;
      --radius-sm:6px;
      --radius:8px;
      --radius-lg:14px;
      --shadow:0 14px 36px rgba(0,0,0,.10);
      --shadow-hard:0 8px 0 rgba(21,23,25,.06);
      --focus:0 0 0 .22rem rgba(197,155,74,.25);
      --container:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--ink);
      background:
        linear-gradient(180deg,rgba(243,241,234,.95),rgba(251,250,246,1) 42%,rgba(243,241,234,.92)),
        radial-gradient(circle at 12% 10%,rgba(197,155,74,.12),transparent 34%),
        radial-gradient(circle at 86% 28%,rgba(111,125,75,.12),transparent 30%);
      line-height:1.72;
      font-size:16px;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    ::selection{background:var(--amber);color:var(--ink)}
    .container-xl{max-width:var(--container)}
    .site-header{
      position:sticky;
      top:0;
      z-index:1020;
      background:rgba(21,23,25,.94);
      border-bottom:1px solid rgba(243,241,234,.10);
      backdrop-filter:blur(14px);
      box-shadow:0 10px 26px rgba(0,0,0,.14);
    }
    .navbar{padding:14px 0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      max-width:520px;
      color:var(--mist)!important;
      font-weight:800;
      letter-spacing:.01em;
      line-height:1.25;
      white-space:normal;
    }
    .brand-mark{
      width:34px;
      height:34px;
      flex:0 0 34px;
      border:1px solid rgba(197,155,74,.72);
      background:
        linear-gradient(90deg,transparent 48%,rgba(197,155,74,.72) 49%,rgba(197,155,74,.72) 51%,transparent 52%),
        linear-gradient(0deg,transparent 48%,rgba(197,155,74,.72) 49%,rgba(197,155,74,.72) 51%,transparent 52%),
        radial-gradient(circle,rgba(197,155,74,.28) 0 22%,transparent 23% 100%);
      position:relative;
      border-radius:50%;
      box-shadow:0 0 0 4px rgba(197,155,74,.08);
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:7px;
      border:1px solid rgba(243,241,234,.35);
      border-radius:50%;
    }
    .navbar-dark .navbar-toggler{
      border-color:rgba(243,241,234,.22);
      border-radius:var(--radius-sm);
      padding:7px 9px;
    }
    .navbar-toggler:focus{box-shadow:var(--focus)}
    .navbar-nav .nav-link{
      color:rgba(243,241,234,.72)!important;
      font-weight:600;
      padding:10px 13px!important;
      border-radius:var(--radius-sm);
      position:relative;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link:focus{
      color:var(--amber)!important;
      background:rgba(243,241,234,.06);
    }
    .navbar-nav .nav-link.active{
      color:var(--ink)!important;
      background:var(--amber);
    }
    .nav-verify{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--mist);
      border:1px solid rgba(197,155,74,.55);
      padding:9px 12px;
      border-radius:var(--radius-sm);
      font-weight:700;
      background:rgba(197,155,74,.08);
    }
    .nav-verify:hover{color:var(--ink);background:var(--amber);transform:translateY(-1px)}
    .status-dot{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--danger);
      box-shadow:0 0 0 4px rgba(122,59,50,.22);
      display:inline-block;
    }
    .main-wrap{overflow:hidden}
    .section{padding:84px 0}
    .section-tight{padding:60px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--olive);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
      text-transform:uppercase;
      margin-bottom:14px;
    }
    .eyebrow:before{
      content:"";
      width:26px;
      height:1px;
      background:var(--amber);
      display:inline-block;
    }
    .page-kv{
      position:relative;
      color:var(--mist);
      background:
        linear-gradient(135deg,rgba(21,23,25,.96),rgba(37,42,45,.92)),
        repeating-linear-gradient(90deg,rgba(243,241,234,.06) 0 1px,transparent 1px 78px),
        repeating-linear-gradient(0deg,rgba(243,241,234,.05) 0 1px,transparent 1px 78px);
      padding:62px 0 48px;
      border-bottom:1px solid rgba(243,241,234,.12);
    }
    .page-kv:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 22% 34%,rgba(197,155,74,.18),transparent 26%),
        radial-gradient(circle at 86% 8%,rgba(111,125,75,.20),transparent 25%);
      pointer-events:none;
    }
    .page-kv .container-xl{position:relative;z-index:1}
    .kv-layout{
      display:grid;
      grid-template-columns:minmax(0,1.12fr) minmax(320px,.88fr);
      gap:34px;
      align-items:center;
    }
    h1{
      font-size:clamp(32px,4.2vw,56px);
      line-height:1.12;
      font-weight:800;
      margin:0 0 18px;
      letter-spacing:.01em;
    }
    .lead-text{
      color:rgba(243,241,234,.78);
      font-size:18px;
      max-width:760px;
      margin:0 0 22px;
    }
    .value-list{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:10px 16px;
      padding:0;
      margin:24px 0 26px;
      list-style:none;
    }
    .value-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:rgba(243,241,234,.86);
      font-weight:600;
    }
    .value-list li:before{
      content:"";
      width:9px;
      height:9px;
      margin-top:9px;
      border:1px solid var(--amber);
      background:rgba(197,155,74,.22);
      flex:0 0 9px;
    }
    .btn-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .btn{
      border-radius:var(--radius-sm);
      font-weight:800;
      padding:12px 18px;
      border-width:1px;
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,color .2s ease;
    }
    .btn-primary-custom{
      color:var(--ink);
      background:var(--amber);
      border-color:var(--amber);
      box-shadow:0 10px 24px rgba(197,155,74,.20);
    }
    .btn-primary-custom:hover,.btn-primary-custom:focus{
      color:var(--ink);
      background:#d5aa58;
      border-color:#d5aa58;
      transform:translateY(-1px);
      box-shadow:0 14px 30px rgba(197,155,74,.28);
    }
    .btn-outline-custom{
      color:var(--mist);
      border-color:rgba(243,241,234,.34);
      background:rgba(243,241,234,.03);
    }
    .btn-outline-custom:hover,.btn-outline-custom:focus{
      color:var(--amber);
      border-color:var(--amber);
      background:rgba(197,155,74,.08);
      transform:translateY(-1px);
    }
    .btn-dark-custom{
      color:var(--amber);
      background:var(--ink);
      border-color:var(--ink);
    }
    .btn-dark-custom:hover,.btn-dark-custom:focus{
      color:var(--ink);
      background:var(--amber);
      border-color:var(--amber);
      transform:translateY(-1px);
      box-shadow:var(--shadow);
    }
    .trust-strip{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
      color:rgba(243,241,234,.70);
      font-size:13px;
    }
    .trust-strip span{
      border:1px solid rgba(243,241,234,.14);
      background:rgba(243,241,234,.05);
      padding:6px 9px;
      border-radius:var(--radius-sm);
    }
    .kv-panel{
      border:1px solid rgba(243,241,234,.16);
      background:linear-gradient(180deg,rgba(243,241,234,.08),rgba(243,241,234,.03));
      padding:18px;
      border-radius:var(--radius-lg);
      box-shadow:0 22px 60px rgba(0,0,0,.24);
    }
    .channel-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:14px;
    }
    .channel-tags a{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 10px;
      border:1px solid rgba(243,241,234,.18);
      border-radius:var(--radius-sm);
      color:rgba(243,241,234,.82);
      font-size:13px;
      font-weight:700;
      background:rgba(21,23,25,.28);
    }
    .channel-tags a.active,.channel-tags a:hover{border-color:var(--amber);color:var(--amber);background:rgba(197,155,74,.10)}
    .signal-box{
      display:grid;
      gap:10px;
    }
    .signal-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:12px;
      align-items:center;
      padding:12px;
      border:1px solid rgba(243,241,234,.13);
      border-radius:var(--radius);
      background:rgba(21,23,25,.28);
    }
    .signal-no{
      font-weight:900;
      color:var(--amber);
      font-size:13px;
      border:1px solid rgba(197,155,74,.4);
      padding:3px 6px;
      border-radius:4px;
    }
    .signal-title{font-weight:800;color:var(--mist);line-height:1.35}
    .signal-meta{font-size:12px;color:rgba(243,241,234,.58)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      padding:5px 8px;
      border-radius:var(--radius-sm);
      font-size:12px;
      font-weight:800;
      color:var(--ink);
      background:var(--amber-soft);
      white-space:nowrap;
    }
    .badge-olive{background:var(--olive-soft);color:#3e4a25}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:24px;
      margin-bottom:28px;
    }
    .section-head h2{
      font-size:clamp(26px,3vw,40px);
      line-height:1.18;
      font-weight:800;
      margin:0;
    }
    .section-head p{
      max-width:580px;
      margin:0;
      color:var(--muted);
    }
    .nav-pills.channel-nav{
      gap:10px;
      padding:10px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.62);
      box-shadow:var(--shadow-hard);
    }
    .channel-nav .nav-link{
      border-radius:var(--radius-sm);
      color:var(--graphite);
      font-weight:800;
      border:1px solid transparent;
      padding:10px 14px;
    }
    .channel-nav .nav-link.active,
    .channel-nav .nav-link:hover{
      background:var(--ink);
      color:var(--amber);
      border-color:var(--ink);
    }
    .matrix-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr 1fr;
      gap:16px;
    }
    .matrix-card{
      position:relative;
      min-height:210px;
      padding:22px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:var(--paper);
      box-shadow:var(--shadow-hard);
      overflow:hidden;
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .matrix-card:hover{
      transform:translateY(-2px);
      border-color:rgba(197,155,74,.7);
      box-shadow:var(--shadow);
    }
    .matrix-card.dark{
      background:linear-gradient(145deg,var(--ink),var(--graphite));
      color:var(--mist);
      border-color:rgba(243,241,234,.13);
    }
    .matrix-card.wide{grid-column:span 2}
    .matrix-card:after{
      content:"";
      position:absolute;
      right:-28px;
      top:-28px;
      width:92px;
      height:92px;
      border:1px solid rgba(197,155,74,.28);
      border-radius:50%;
    }
    .matrix-top{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
      margin-bottom:20px;
      position:relative;
      z-index:1;
    }
    .matrix-code{
      font-weight:900;
      color:var(--amber);
      letter-spacing:.08em;
      font-size:13px;
    }
    .matrix-card h3{
      font-size:22px;
      line-height:1.25;
      font-weight:800;
      margin:0 0 10px;
      position:relative;
      z-index:1;
    }
    .matrix-card p{
      color:var(--muted);
      margin:0 0 18px;
      position:relative;
      z-index:1;
    }
    .matrix-card.dark p{color:rgba(243,241,234,.72)}
    .mini-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:8px;
      position:relative;
      z-index:1;
    }
    .mini-list li{
      display:flex;
      gap:9px;
      color:inherit;
      font-weight:600;
      font-size:14px;
    }
    .mini-list li:before{
      content:"";
      width:7px;
      height:7px;
      margin-top:9px;
      background:var(--olive);
      border-radius:1px;
      flex:0 0 7px;
    }
    .timeline{
      display:grid;
      grid-template-columns:repeat(5,minmax(0,1fr));
      gap:12px;
      position:relative;
    }
    .timeline:before{
      content:"";
      position:absolute;
      top:31px;
      left:4%;
      right:4%;
      height:1px;
      background:linear-gradient(90deg,transparent,var(--line),transparent);
    }
    .time-step{
      position:relative;
      z-index:1;
      padding:18px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.68);
      border-radius:var(--radius);
      box-shadow:var(--shadow-hard);
    }
    .time-dot{
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      color:var(--ink);
      background:var(--amber);
      font-size:12px;
      font-weight:900;
      border-radius:50%;
      margin-bottom:16px;
      box-shadow:0 0 0 6px rgba(197,155,74,.16);
    }
    .time-step h3{
      font-size:17px;
      font-weight:800;
      margin:0 0 7px;
    }
    .time-step p{margin:0;color:var(--muted);font-size:14px}
    .archive-list{
      display:grid;
      gap:14px;
    }
    .archive-item{
      display:grid;
      grid-template-columns:92px 1fr auto;
      gap:18px;
      align-items:center;
      padding:18px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:var(--paper);
      box-shadow:var(--shadow-hard);
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .archive-item:hover{
      transform:translateY(-2px);
      border-color:rgba(111,125,75,.52);
      box-shadow:var(--shadow);
    }
    .archive-index{
      border-right:1px solid var(--line);
      min-height:78px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:6px;
    }
    .archive-index strong{
      font-size:24px;
      font-weight:900;
      color:var(--olive);
      line-height:1;
    }
    .archive-index span{
      color:var(--muted);
      font-size:12px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .archive-body h3{
      font-size:20px;
      font-weight:800;
      margin:0 0 7px;
      line-height:1.35;
    }
    .archive-body p{
      margin:0 0 10px;
      color:var(--muted);
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      border:1px solid var(--line);
      background:rgba(111,125,75,.10);
      color:#46512d;
      padding:4px 8px;
      font-size:12px;
      border-radius:var(--radius-sm);
      font-weight:800;
    }
    .tag.warn{background:rgba(122,59,50,.08);color:var(--danger)}
    .compare-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
    }
    .plan-card{
      position:relative;
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:var(--paper);
      box-shadow:var(--shadow-hard);
      min-height:100%;
    }
    .plan-card.featured{
      background:linear-gradient(180deg,var(--graphite),var(--ink));
      color:var(--mist);
      border-color:rgba(197,155,74,.55);
      box-shadow:0 20px 46px rgba(21,23,25,.22);
    }
    .corner-label{
      position:absolute;
      top:14px;
      right:14px;
      font-size:12px;
      font-weight:900;
      color:var(--ink);
      background:var(--amber);
      border-radius:4px;
      padding:4px 7px;
    }
    .plan-card h3{
      font-size:22px;
      font-weight:800;
      margin:18px 0 8px;
    }
    .plan-card .mode{
      display:inline-flex;
      color:var(--olive);
      font-weight:900;
      font-size:13px;
      letter-spacing:.06em;
    }
    .plan-card.featured .mode{color:var(--amber)}
    .plan-card p{color:var(--muted);margin-bottom:18px}
    .plan-card.featured p{color:rgba(243,241,234,.72)}
    .check-list{
      list-style:none;
      padding:0;
      margin:0 0 22px;
      display:grid;
      gap:10px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      font-weight:600;
    }
    .check-list li:before{
      content:"✓";
      color:var(--amber);
      font-weight:900;
      flex:0 0 auto;
    }
    .compliance-box{
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
      padding:30px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(21,23,25,.96),rgba(37,42,45,.96)),
        repeating-linear-gradient(90deg,rgba(243,241,234,.06) 0 1px,transparent 1px 72px);
      color:var(--mist);
      border:1px solid rgba(243,241,234,.14);
      box-shadow:var(--shadow);
    }
    .compliance-box h2{
      font-size:clamp(26px,3vw,38px);
      font-weight:800;
      margin:0 0 10px;
    }
    .compliance-box p{margin:0;color:rgba(243,241,234,.74)}
    .accordion{
      --bs-accordion-border-color:var(--line);
      --bs-accordion-border-radius:var(--radius);
      --bs-accordion-inner-border-radius:var(--radius);
      --bs-accordion-bg:var(--paper);
      display:grid;
      gap:12px;
    }
    .accordion-item{
      border:1px solid var(--line)!important;
      border-radius:var(--radius)!important;
      overflow:hidden;
      box-shadow:var(--shadow-hard);
      background:var(--paper);
    }
    .accordion-button{
      font-weight:800;
      color:var(--ink);
      background:var(--paper);
      padding:18px 20px;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--ink);
      background:var(--amber-soft);
    }
    .accordion-button:focus{box-shadow:var(--focus)!important;border-color:var(--amber)}
    .accordion-button::after{
      filter:sepia(1) saturate(1.4);
    }
    .accordion-body{
      color:var(--muted);
      padding:0 20px 18px;
    }
    .site-footer{
      background:var(--ink);
      color:rgba(243,241,234,.72);
      padding:58px 0 26px;
      border-top:1px solid rgba(243,241,234,.10);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .9fr;
      gap:34px;
      margin-bottom:34px;
    }
    .footer-brand{
      color:var(--mist);
      font-weight:900;
      font-size:20px;
      margin-bottom:12px;
    }
    .footer-title{
      color:var(--amber);
      font-weight:900;
      margin-bottom:12px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{color:rgba(243,241,234,.72)}
    .footer-links a:hover{color:var(--amber)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:20px;
      border-top:1px solid rgba(243,241,234,.12);
      color:rgba(243,241,234,.54);
      font-size:13px;
    }
    .bg-ink{
      background:var(--ink);
      color:var(--mist);
    }
    .bg-ink .section-head p,
    .bg-ink .time-step p{color:rgba(243,241,234,.65)}
    .bg-ink .time-step{
      background:rgba(243,241,234,.06);
      border-color:rgba(243,241,234,.14);
      box-shadow:none;
    }
    .bg-ink .timeline:before{background:linear-gradient(90deg,transparent,rgba(243,241,234,.22),transparent)}
    .muted-note{
      color:var(--muted);
      font-size:14px;
      margin-top:14px;
    }
    .rule-note{
      display:flex;
      gap:12px;
      padding:14px;
      border:1px solid rgba(122,59,50,.22);
      background:rgba(122,59,50,.07);
      border-radius:var(--radius);
      color:#57322d;
      font-weight:700;
    }
    .rule-note strong{color:var(--danger)}
    @media (max-width: 1199.98px){
      .kv-layout{grid-template-columns:1fr;gap:28px}
      .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .matrix-card.wide{grid-column:span 1}
      .timeline{grid-template-columns:repeat(3,minmax(0,1fr))}
      .timeline:before{display:none}
    }
    @media (max-width: 991.98px){
      .navbar-collapse{
        margin-top:14px;
        padding:14px;
        border:1px solid rgba(243,241,234,.12);
        border-radius:var(--radius);
        background:rgba(21,23,25,.98);
      }
      .navbar-nav{align-items:stretch!important}
      .nav-verify{justify-content:center;margin-top:8px}
      .section{padding:66px 0}
      .section-tight{padding:48px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .archive-item{grid-template-columns:70px 1fr;align-items:start}
      .archive-item .btn{grid-column:1 / -1;justify-self:start}
      .archive-index{min-height:auto}
      .compliance-box{grid-template-columns:1fr}
    }
    @media (max-width: 767.98px){
      body{font-size:15px}
      .page-kv{padding:46px 0 38px}
      .value-list{grid-template-columns:1fr}
      .signal-item{grid-template-columns:auto 1fr}
      .signal-item .badge-soft{grid-column:1 / -1;justify-self:start}
      .matrix-grid,.compare-grid,.timeline{grid-template-columns:1fr}
      .archive-item{grid-template-columns:1fr;gap:12px}
      .archive-index{
        border-right:0;
        border-bottom:1px solid var(--line);
        padding-bottom:10px;
        flex-direction:row;
        justify-content:flex-start;
        align-items:center;
      }
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{flex-direction:column}
      .nav-pills.channel-nav{overflow-x:auto;flex-wrap:nowrap;padding:8px}
      .channel-nav .nav-link{white-space:nowrap}
    }
    @media (max-width: 520px){
      .navbar-brand{font-size:15px;gap:9px}
      .brand-mark{width:30px;height:30px;flex-basis:30px}
      h1{font-size:30px}
      .lead-text{font-size:16px}
      .btn-row .btn{width:100%;justify-content:center}
      .kv-panel{padding:14px}
      .section{padding:54px 0}
      .matrix-card,.plan-card,.compliance-box{padding:20px}
      .archive-body h3{font-size:18px}
    }

/* roulang page: category1 */
:root {
      --ink: #151719;
      --graphite: #252a2d;
      --graphite-2: #30363a;
      --olive: #6f7d4b;
      --olive-soft: rgba(111, 125, 75, .14);
      --amber: #c59b4a;
      --amber-soft: rgba(197, 155, 74, .18);
      --mist: #f3f1ea;
      --paper: #fbfaf6;
      --line: rgba(21, 23, 25, .13);
      --muted: #6d716e;
      --danger: #7a3b32;
      --white: #ffffff;
      --radius: 8px;
      --radius-sm: 5px;
      --shadow: 0 16px 42px rgba(0, 0, 0, .11);
      --shadow-soft: 0 10px 28px rgba(0, 0, 0, .08);
      --focus: 0 0 0 .22rem rgba(197, 155, 74, .28);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--ink);
      background: var(--paper);
      line-height: 1.75;
      font-size: 16px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
    }

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

    button, input, select {
      font: inherit;
    }

    .container-xl {
      max-width: 1220px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(21, 23, 25, .94);
      border-bottom: 1px solid rgba(243, 241, 234, .12);
      backdrop-filter: blur(14px);
    }

    .navbar {
      min-height: 76px;
      padding: .75rem 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: .72rem;
      color: var(--mist) !important;
      font-weight: 800;
      font-size: 1rem;
      max-width: 58vw;
      white-space: normal;
      line-height: 1.25;
    }

    .brand-mark {
      position: relative;
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      border: 1px solid rgba(197, 155, 74, .76);
      border-radius: 50%;
      background:
        linear-gradient(90deg, transparent 47%, rgba(197, 155, 74, .75) 48%, rgba(197, 155, 74, .75) 52%, transparent 53%),
        linear-gradient(0deg, transparent 47%, rgba(197, 155, 74, .75) 48%, rgba(197, 155, 74, .75) 52%, transparent 53%),
        radial-gradient(circle, rgba(197, 155, 74, .26) 0 18%, transparent 19%);
      box-shadow: inset 0 0 0 6px rgba(111, 125, 75, .16);
    }

    .navbar-toggler {
      border-color: rgba(243, 241, 234, .24);
      border-radius: var(--radius-sm);
      padding: .45rem .6rem;
    }

    .navbar-toggler:focus {
      box-shadow: var(--focus);
    }

    .nav-link {
      color: rgba(243, 241, 234, .78) !important;
      font-weight: 600;
      padding: .65rem .9rem !important;
      border-radius: var(--radius-sm);
    }

    .nav-link:hover,
    .nav-link:focus {
      color: var(--amber) !important;
      background: rgba(243, 241, 234, .06);
    }

    .nav-link.active {
      color: var(--ink) !important;
      background: var(--amber);
    }

    .nav-verify {
      display: inline-flex;
      align-items: center;
      gap: .45rem;
      color: var(--mist);
      border: 1px solid rgba(197, 155, 74, .42);
      border-radius: var(--radius-sm);
      padding: .55rem .78rem;
      font-weight: 700;
      font-size: .92rem;
    }

    .nav-verify:hover,
    .nav-verify:focus {
      color: var(--amber);
      background: rgba(197, 155, 74, .1);
      transform: translateY(-1px);
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--danger);
      box-shadow: 0 0 0 4px rgba(122, 59, 50, .24);
    }

    .page-hero {
      position: relative;
      overflow: hidden;
      color: var(--mist);
      background:
        linear-gradient(120deg, rgba(21, 23, 25, .96), rgba(37, 42, 45, .9)),
        repeating-linear-gradient(90deg, rgba(243, 241, 234, .06) 0 1px, transparent 1px 64px),
        repeating-linear-gradient(0deg, rgba(243, 241, 234, .045) 0 1px, transparent 1px 64px);
      padding: 58px 0 46px;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: auto -10% -40% 48%;
      height: 360px;
      background:
        linear-gradient(90deg, transparent, rgba(197, 155, 74, .16), transparent),
        radial-gradient(circle at 30% 45%, rgba(111, 125, 75, .22), transparent 45%);
      transform: rotate(-8deg);
      pointer-events: none;
    }

    .hero-layout {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, .72fr);
      gap: 36px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      color: var(--amber);
      font-size: .86rem;
      font-weight: 800;
      letter-spacing: 0;
      text-transform: none;
      margin-bottom: 14px;
    }

    .eyebrow::before {
      content: "";
      width: 24px;
      height: 1px;
      background: var(--amber);
    }

    h1 {
      font-size: clamp(2rem, 4vw, 3.72rem);
      line-height: 1.12;
      font-weight: 800;
      letter-spacing: 0;
      margin: 0 0 16px;
      max-width: 860px;
    }

    .hero-copy {
      color: rgba(243, 241, 234, .82);
      max-width: 760px;
      font-size: 1.05rem;
      margin-bottom: 22px;
    }

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

    .btn-tactical {
      --bs-btn-padding-x: 1.05rem;
      --bs-btn-padding-y: .72rem;
      --bs-btn-font-weight: 800;
      --bs-btn-border-radius: 5px;
      border: 1px solid transparent;
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .45rem;
      white-space: normal;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    }

    .btn-primary-tactical {
      color: var(--ink);
      background: var(--amber);
      border-color: var(--amber);
      box-shadow: 0 12px 26px rgba(197, 155, 74, .2);
    }

    .btn-primary-tactical:hover,
    .btn-primary-tactical:focus {
      color: var(--ink);
      background: #d3aa58;
      border-color: #d3aa58;
      transform: translateY(-1px);
      box-shadow: 0 16px 34px rgba(197, 155, 74, .28);
    }

    .btn-outline-tactical {
      color: var(--mist);
      background: transparent;
      border-color: rgba(243, 241, 234, .28);
    }

    .btn-outline-tactical:hover,
    .btn-outline-tactical:focus {
      color: var(--amber);
      background: rgba(243, 241, 234, .07);
      border-color: rgba(197, 155, 74, .72);
      transform: translateY(-1px);
    }

    .btn-dark-tactical {
      color: var(--amber);
      background: var(--ink);
      border-color: var(--ink);
    }

    .btn-dark-tactical:hover,
    .btn-dark-tactical:focus {
      color: var(--mist);
      background: var(--graphite);
      border-color: var(--graphite);
      transform: translateY(-1px);
    }

    .qualification-panel {
      border: 1px solid rgba(243, 241, 234, .16);
      background: rgba(21, 23, 25, .62);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 22px;
    }

    .panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-bottom: 15px;
      border-bottom: 1px solid rgba(243, 241, 234, .14);
      margin-bottom: 15px;
    }

    .panel-code {
      color: rgba(243, 241, 234, .7);
      font-size: .82rem;
      font-weight: 700;
    }

    .badge-soft,
    .tag {
      display: inline-flex;
      align-items: center;
      gap: .35rem;
      border-radius: var(--radius-sm);
      padding: .28rem .52rem;
      font-size: .78rem;
      font-weight: 800;
      line-height: 1.2;
      border: 1px solid transparent;
    }

    .badge-soft {
      color: var(--ink);
      background: var(--amber);
    }

    .tag {
      color: var(--graphite);
      background: var(--mist);
      border-color: var(--line);
    }

    .tag.dark {
      color: var(--mist);
      background: rgba(243, 241, 234, .08);
      border-color: rgba(243, 241, 234, .16);
    }

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

    .check-list li {
      display: flex;
      gap: 10px;
      color: rgba(243, 241, 234, .82);
      font-size: .94rem;
    }

    .check-list li::before {
      content: "";
      width: 9px;
      height: 9px;
      flex: 0 0 9px;
      margin-top: .58rem;
      background: var(--olive);
      border: 1px solid rgba(243, 241, 234, .28);
      box-shadow: 0 0 0 3px rgba(111, 125, 75, .18);
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 78px 0;
    }

    .section.tight {
      padding: 56px 0;
    }

    .section.dark {
      color: var(--mist);
      background: var(--ink);
    }

    .section-title-row {
      display: grid;
      grid-template-columns: minmax(0, .9fr) minmax(300px, .5fr);
      gap: 32px;
      align-items: end;
      margin-bottom: 34px;
    }

    .section-kicker {
      color: var(--olive);
      font-weight: 800;
      margin-bottom: 8px;
      font-size: .9rem;
    }

    h2 {
      font-size: clamp(1.55rem, 2.5vw, 2.42rem);
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: 0;
      margin: 0;
    }

    .section-desc {
      color: var(--muted);
      margin: 0;
    }

    .dark .section-desc {
      color: rgba(243, 241, 234, .72);
    }

    .filter-strip {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      padding: 16px;
      margin-top: -24px;
      position: relative;
      z-index: 2;
    }

    .form-control,
    .form-select {
      border-radius: var(--radius-sm);
      border: 1px solid rgba(21, 23, 25, .18);
      min-height: 46px;
      color: var(--ink);
      background-color: #fff;
    }

    .form-control:focus,
    .form-select:focus {
      border-color: var(--olive);
      box-shadow: 0 0 0 .22rem rgba(111, 125, 75, .2);
    }

    .content-shell {
      display: grid;
      grid-template-columns: 300px minmax(0, 1fr);
      gap: 26px;
      align-items: start;
    }

    .filter-sidebar,
    .index-card,
    .metric-card,
    .mode-card,
    .faq-wrap {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
    }

    .filter-sidebar {
      position: sticky;
      top: 98px;
      padding: 20px;
    }

    .filter-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--line);
      margin-bottom: 14px;
    }

    .filter-block {
      padding: 14px 0;
      border-bottom: 1px dashed rgba(21, 23, 25, .16);
    }

    .filter-block:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .filter-label {
      color: var(--muted);
      font-size: .85rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .option-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .option-pill {
      border: 1px solid rgba(21, 23, 25, .16);
      background: var(--mist);
      color: var(--graphite);
      border-radius: var(--radius-sm);
      padding: .36rem .56rem;
      font-size: .83rem;
      font-weight: 700;
    }

    .option-pill.active,
    .option-pill:hover {
      color: var(--ink);
      background: var(--amber-soft);
      border-color: rgba(197, 155, 74, .55);
    }

    .mobile-filter-btn {
      display: none;
      width: 100%;
      margin-bottom: 16px;
    }

    .index-list {
      display: grid;
      gap: 16px;
    }

    .index-card {
      padding: 18px;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .index-card:hover {
      transform: translateY(-2px);
      border-color: rgba(197, 155, 74, .55);
      box-shadow: 0 16px 36px rgba(0, 0, 0, .12);
    }

    .index-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 12px;
    }

    .index-no {
      color: var(--amber);
      background: var(--ink);
      border-radius: var(--radius-sm);
      padding: .28rem .48rem;
      font-size: .78rem;
      font-weight: 800;
    }

    .index-card h3 {
      font-size: 1.18rem;
      line-height: 1.35;
      font-weight: 800;
      margin: 0 0 8px;
    }

    .index-card p {
      color: var(--muted);
      margin: 0 0 14px;
    }

    .index-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--line);
      padding-top: 13px;
    }

    .meta-text {
      color: var(--muted);
      font-size: .86rem;
      font-weight: 700;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      border: 1px solid rgba(243, 241, 234, .14);
      border-radius: var(--radius);
      overflow: hidden;
      background: rgba(243, 241, 234, .04);
    }

    .timeline-step {
      position: relative;
      padding: 24px 18px;
      border-right: 1px solid rgba(243, 241, 234, .14);
      min-height: 190px;
    }

    .timeline-step:last-child {
      border-right: 0;
    }

    .timeline-step::before {
      content: "";
      position: absolute;
      top: 22px;
      right: 18px;
      width: 9px;
      height: 9px;
      background: var(--olive);
      box-shadow: 0 0 0 4px rgba(111, 125, 75, .18);
    }

    .timeline-num {
      color: var(--amber);
      font-weight: 800;
      margin-bottom: 34px;
    }

    .timeline-step h3 {
      font-size: 1.05rem;
      font-weight: 800;
      margin: 0 0 8px;
    }

    .timeline-step p {
      color: rgba(243, 241, 234, .72);
      margin: 0;
      font-size: .93rem;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 18px;
    }

    .metric-card {
      padding: 22px;
      min-height: 190px;
    }

    .metric-card.wide {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      grid-column: span 2;
      align-items: center;
    }

    .metric-code {
      color: var(--olive);
      font-weight: 800;
      font-size: .82rem;
      margin-bottom: 12px;
    }

    .metric-card h3 {
      font-weight: 800;
      font-size: 1.2rem;
      margin: 0 0 10px;
    }

    .metric-card p {
      color: var(--muted);
      margin: 0;
    }

    .mini-line {
      height: 8px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--olive) 0 48%, rgba(21, 23, 25, .12) 48% 100%);
      margin-top: 18px;
    }

    .mode-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .mode-card {
      position: relative;
      padding: 24px;
      overflow: hidden;
    }

    .mode-card.featured {
      border-color: rgba(197, 155, 74, .76);
      box-shadow: 0 18px 46px rgba(197, 155, 74, .16);
    }

    .mode-card.featured::before {
      content: "推荐";
      position: absolute;
      top: 16px;
      right: 16px;
      color: var(--ink);
      background: var(--amber);
      border-radius: var(--radius-sm);
      padding: .24rem .46rem;
      font-size: .76rem;
      font-weight: 800;
    }

    .mode-card h3 {
      font-weight: 800;
      font-size: 1.28rem;
      margin: 0 0 6px;
    }

    .mode-note {
      color: var(--muted);
      margin: 0 0 18px;
    }

    .mode-list {
      list-style: none;
      padding: 0;
      margin: 0 0 20px;
      display: grid;
      gap: 10px;
    }

    .mode-list li {
      display: flex;
      gap: 10px;
      color: var(--graphite);
    }

    .mode-list li::before {
      content: "";
      width: 8px;
      height: 8px;
      flex: 0 0 8px;
      margin-top: .62rem;
      background: var(--amber);
      border: 1px solid rgba(21, 23, 25, .12);
    }

    .accordion {
      --bs-accordion-border-width: 0;
      --bs-accordion-border-radius: 0;
      --bs-accordion-inner-border-radius: 0;
    }

    .faq-wrap {
      overflow: hidden;
    }

    .accordion-item {
      background: var(--white);
      border-bottom: 1px solid var(--line);
    }

    .accordion-item:last-child {
      border-bottom: 0;
    }

    .accordion-button {
      color: var(--ink);
      background: var(--white);
      font-weight: 800;
      padding: 18px 22px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--ink);
      background: var(--mist);
    }

    .accordion-button::after {
      filter: sepia(1) saturate(1.2);
    }

    .accordion-button:focus {
      box-shadow: inset 0 0 0 2px rgba(197, 155, 74, .28) !important;
    }

    .accordion-body {
      color: var(--muted);
      padding: 0 22px 20px;
    }

    .cta-band {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius);
      background:
        linear-gradient(125deg, rgba(21, 23, 25, .98), rgba(37, 42, 45, .92)),
        repeating-linear-gradient(90deg, rgba(243, 241, 234, .05) 0 1px, transparent 1px 54px);
      color: var(--mist);
      padding: 34px;
      border: 1px solid rgba(243, 241, 234, .13);
    }

    .cta-band h2 {
      margin-bottom: 12px;
    }

    .cta-band p {
      color: rgba(243, 241, 234, .74);
      max-width: 760px;
      margin-bottom: 22px;
    }

    .compliance-box {
      border: 1px solid rgba(122, 59, 50, .35);
      background: rgba(122, 59, 50, .08);
      border-radius: var(--radius);
      padding: 18px;
      color: var(--graphite);
    }

    .compliance-box strong {
      color: var(--danger);
    }

    .site-footer {
      background: var(--ink);
      color: rgba(243, 241, 234, .78);
      padding: 58px 0 26px;
      border-top: 1px solid rgba(243, 241, 234, .12);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr .7fr .8fr;
      gap: 34px;
      padding-bottom: 30px;
      border-bottom: 1px solid rgba(243, 241, 234, .12);
    }

    .footer-brand {
      color: var(--mist);
      font-weight: 800;
      font-size: 1.12rem;
      margin-bottom: 10px;
    }

    .footer-title {
      color: var(--amber);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 9px;
    }

    .footer-links a {
      color: rgba(243, 241, 234, .72);
      border-bottom: 1px solid transparent;
    }

    .footer-links a:hover,
    .footer-links a:focus {
      color: var(--amber);
      border-color: rgba(197, 155, 74, .48);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding-top: 22px;
      color: rgba(243, 241, 234, .58);
      font-size: .88rem;
    }

    .offcanvas {
      background: var(--paper);
    }

    .offcanvas-header {
      border-bottom: 1px solid var(--line);
    }

    @media (max-width: 991.98px) {
      .navbar-collapse {
        margin-top: 12px;
        padding: 12px;
        background: rgba(37, 42, 45, .98);
        border: 1px solid rgba(243, 241, 234, .12);
        border-radius: var(--radius);
      }

      .nav-verify {
        margin-top: 8px;
        justify-content: center;
      }

      .hero-layout,
      .section-title-row,
      .content-shell {
        grid-template-columns: 1fr;
      }

      .filter-sidebar {
        display: none;
      }

      .mobile-filter-btn {
        display: inline-flex;
      }

      .timeline {
        grid-template-columns: 1fr;
      }

      .timeline-step {
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid rgba(243, 241, 234, .14);
      }

      .timeline-step:last-child {
        border-bottom: 0;
      }

      .timeline-num {
        margin-bottom: 16px;
      }

      .mode-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .metric-grid,
      .metric-card.wide {
        grid-template-columns: 1fr;
      }

      .metric-card.wide {
        grid-column: auto;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 767.98px) {
      body {
        font-size: 15px;
      }

      .navbar {
        min-height: 68px;
      }

      .navbar-brand {
        max-width: 72vw;
        font-size: .93rem;
      }

      .page-hero {
        padding: 42px 0 34px;
      }

      .qualification-panel {
        padding: 18px;
      }

      .section {
        padding: 54px 0;
      }

      .section.tight {
        padding: 42px 0;
      }

      .filter-strip {
        margin-top: 0;
      }

      .index-top,
      .index-meta,
      .panel-head {
        align-items: flex-start;
        flex-direction: column;
      }

      .mode-grid {
        grid-template-columns: 1fr;
      }

      .cta-band {
        padding: 24px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 2rem;
      }

      .hero-actions,
      .cta-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn-tactical {
        width: 100%;
      }

      .option-grid {
        gap: 6px;
      }

      .option-pill,
      .tag {
        font-size: .78rem;
      }
    }