/* roulang page: index */
:root {
      --bg-dark: #0B0F0E;
      --bg-panel: #101413;
      --bg-soft: #F7F7F2;
      --bg-paper: #FAFAF5;
      --text-dark: #171A16;
      --text-muted: #657066;
      --text-light: #F5FFF7;
      --line-dark: rgba(17, 20, 17, .12);
      --line-light: rgba(255, 255, 255, .14);
      --green: #2CFF88;
      --pink: #FF3D8A;
      --orange: #FFB000;
      --cyan: #18D7FF;
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --shadow-soft: 0 18px 60px rgba(0, 0, 0, .08);
      --shadow-dark: 0 22px 70px rgba(0, 0, 0, .28);
      --container: 1280px;
    }

    * {
      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(--text-dark);
      background: var(--bg-paper);
      line-height: 1.75;
      text-rendering: optimizeLegibility;
    }

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

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

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

    button {
      cursor: pointer;
    }

    ::selection {
      background: var(--green);
      color: #07100b;
    }

    .site-container {
      width: min(100% - 32px, var(--container));
      margin-inline: auto;
    }

    .grid-texture {
      background-image:
        linear-gradient(rgba(44,255,136,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(24,215,255,.07) 1px, transparent 1px);
      background-size: 34px 34px;
    }

    .scan-line {
      position: relative;
      overflow: hidden;
    }

    .scan-line::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 0%, rgba(44,255,136,.08) 50%, transparent 100%);
      transform: translateY(-100%);
      animation: scan 7s linear infinite;
      pointer-events: none;
    }

    @keyframes scan {
      0% { transform: translateY(-100%); }
      60%, 100% { transform: translateY(100%); }
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(11, 15, 14, .94);
      border-bottom: 1px solid var(--line-light);
      backdrop-filter: blur(10px);
    }

    .nav-wrap {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-light);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: 0;
      min-width: 0;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      border-radius: 12px;
      background:
        linear-gradient(135deg, var(--green), var(--cyan));
      box-shadow: 0 0 26px rgba(44,255,136,.35);
      position: relative;
      flex: none;
    }

    .brand-icon::before,
    .brand-icon::after {
      content: "";
      position: absolute;
      background: rgba(11, 15, 14, .76);
    }

    .brand-icon::before {
      width: 18px;
      height: 2px;
      left: 9px;
      top: 17px;
    }

    .brand-icon::after {
      width: 2px;
      height: 18px;
      left: 17px;
      top: 9px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      color: rgba(245, 255, 247, .78);
      font-size: 14px;
      font-weight: 600;
    }

    .nav-links a {
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid transparent;
      transition: .25s ease;
      white-space: nowrap;
    }

    .nav-links a:hover,
    .nav-links a:focus {
      color: var(--text-light);
      border-color: rgba(44,255,136,.28);
      background: rgba(44,255,136,.08);
      outline: none;
    }

    .nav-links a.active {
      color: #07100b;
      background: var(--green);
      box-shadow: 0 0 22px rgba(44,255,136,.25);
    }

    .nav-side {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-light);
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: rgba(245,255,247,.82);
      font-size: 13px;
      border: 1px solid var(--line-light);
      border-radius: 999px;
      padding: 9px 12px;
      white-space: nowrap;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--green);
      box-shadow: 0 0 14px rgba(44,255,136,.9);
      flex: none;
    }

    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line-light);
      border-radius: 14px;
      background: rgba(255,255,255,.04);
      color: var(--text-light);
      align-items: center;
      justify-content: center;
      transition: .25s ease;
    }

    .menu-btn:hover,
    .menu-btn:focus {
      border-color: var(--green);
      outline: none;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--green);
      color: #08100c;
      box-shadow: 0 14px 36px rgba(44,255,136,.22);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      transform: translateY(-2px);
      box-shadow: 0 18px 46px rgba(44,255,136,.32);
      outline: none;
    }

    .btn-pink {
      background: var(--pink);
      color: #fff;
      box-shadow: 0 14px 36px rgba(255,61,138,.2);
    }

    .btn-pink:hover,
    .btn-pink:focus {
      transform: translateY(-2px);
      box-shadow: 0 18px 46px rgba(255,61,138,.32);
      outline: none;
    }

    .btn-ghost {
      color: var(--text-light);
      border-color: var(--line-light);
      background: rgba(255,255,255,.04);
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      transform: translateY(-2px);
      border-color: var(--cyan);
      background: rgba(24,215,255,.1);
      outline: none;
    }

    .section {
      padding: 92px 0;
    }

    .section-dark {
      background: var(--bg-dark);
      color: var(--text-light);
    }

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

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 800;
      color: #0b2616;
      background: rgba(44,255,136,.22);
      border: 1px solid rgba(44,255,136,.38);
      border-radius: 999px;
      padding: 6px 12px;
      margin-bottom: 14px;
    }

    .section-dark .section-kicker {
      color: var(--green);
      background: rgba(44,255,136,.1);
      border-color: rgba(44,255,136,.24);
    }

    .section-title {
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: 0;
      margin: 0 0 14px;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 16px;
      max-width: 780px;
      margin: 0;
    }

    .section-dark .section-desc {
      color: rgba(245,255,247,.72);
    }

    .hero {
      min-height: calc(100vh - 74px);
      padding: 70px 0 44px;
      background:
        radial-gradient(circle at 15% 20%, rgba(44,255,136,.16), transparent 30%),
        radial-gradient(circle at 85% 25%, rgba(255,61,138,.14), transparent 28%),
        linear-gradient(135deg, #0B0F0E 0%, #101413 62%, #0B0F0E 100%);
      color: var(--text-light);
      position: relative;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
      background-size: 40px 40px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.18));
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
    }

    .hero-topline {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      margin-bottom: 26px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 700;
      line-height: 1.2;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.06);
      color: rgba(245,255,247,.86);
    }

    .tag.green { border-color: rgba(44,255,136,.36); color: var(--green); }
    .tag.pink { border-color: rgba(255,61,138,.38); color: #ff8fbd; }
    .tag.orange { border-color: rgba(255,176,0,.42); color: #ffd47a; }
    .tag.cyan { border-color: rgba(24,215,255,.42); color: #8deaff; }

    .hero-title {
      max-width: 1040px;
      font-size: clamp(34px, 6.2vw, 64px);
      line-height: 1.1;
      font-weight: 800;
      letter-spacing: 0;
      margin: 0 0 18px;
    }

    .hero-title .mark {
      color: var(--green);
      text-decoration: underline;
      text-decoration-color: var(--pink);
      text-decoration-thickness: 6px;
      text-underline-offset: 8px;
    }

    .hero-lead {
      max-width: 820px;
      color: rgba(245,255,247,.76);
      font-size: 17px;
      line-height: 1.85;
      margin: 0 0 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 34px;
    }

    .hero-stage {
      display: grid;
      grid-template-columns: 1.18fr .82fr;
      gap: 22px;
      align-items: stretch;
    }

    .access-board {
      min-height: 360px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.05);
      box-shadow: var(--shadow-dark);
      padding: 22px;
      position: relative;
    }

    .access-board::before,
    .access-board::after,
    .card::before {
      content: "";
      position: absolute;
      width: 18px;
      height: 18px;
      border-color: var(--green);
      opacity: .75;
      pointer-events: none;
    }

    .access-board::before {
      left: 18px;
      top: 18px;
      border-left: 2px solid;
      border-top: 2px solid;
    }

    .access-board::after {
      right: 18px;
      bottom: 18px;
      border-right: 2px solid;
      border-bottom: 2px solid;
    }

    .board-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      height: 100%;
    }

    .entry-tile {
      min-height: 156px;
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,.13);
      background: rgba(11,15,14,.68);
      padding: 18px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: .25s ease;
    }

    .entry-tile:hover {
      transform: translateY(-3px);
      border-color: rgba(44,255,136,.68);
      box-shadow: 0 18px 44px rgba(44,255,136,.12);
    }

    .entry-tile.wide {
      grid-column: span 2;
    }

    .tile-code {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: rgba(245,255,247,.58);
      font-size: 12px;
      font-weight: 800;
    }

    .tile-title {
      font-size: 22px;
      line-height: 1.25;
      font-weight: 800;
      margin: 18px 0 10px;
    }

    .tile-text {
      color: rgba(245,255,247,.68);
      font-size: 14px;
      line-height: 1.65;
      margin: 0;
    }

    .guide-cover {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(44,255,136,.12), rgba(255,61,138,.09) 45%, rgba(24,215,255,.08));
      padding: 22px;
      box-shadow: var(--shadow-dark);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 360px;
    }

    .cover-label {
      color: var(--green);
      font-size: 13px;
      font-weight: 800;
    }

    .cover-title {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.18;
      margin: 14px 0 16px;
    }

    .cover-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
      color: rgba(245,255,247,.78);
      font-size: 14px;
    }

    .cover-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }

    .cover-list li::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      margin-top: 8px;
      background: var(--orange);
      box-shadow: 0 0 12px rgba(255,176,0,.65);
      flex: none;
    }

    .service-layout {
      display: grid;
      grid-template-columns: .92fr 1.38fr;
      gap: 22px;
      align-items: start;
    }

    .service-main {
      border-radius: var(--radius-lg);
      background: #111411;
      color: var(--text-light);
      padding: 28px;
      min-height: 470px;
      position: relative;
      overflow: hidden;
    }

    .service-main::after {
      content: "";
      position: absolute;
      inset: auto -30px -40px auto;
      width: 180px;
      height: 180px;
      background: linear-gradient(135deg, var(--pink), var(--orange));
      opacity: .18;
      border-radius: 50%;
      filter: blur(6px);
    }

    .service-index {
      display: grid;
      gap: 12px;
      margin-top: 26px;
    }

    .service-index a {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      padding: 14px 16px;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 18px;
      color: rgba(245,255,247,.82);
      transition: .25s ease;
    }

    .service-index a:hover,
    .service-index a:focus {
      border-color: var(--green);
      background: rgba(44,255,136,.08);
      outline: none;
    }

    .service-cards {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 16px;
    }

    .card {
      position: relative;
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-md);
      background: #fff;
      box-shadow: var(--shadow-soft);
      padding: 22px;
      transition: .25s ease;
    }

    .card::before {
      right: 14px;
      top: 14px;
      border-right: 2px solid var(--pink);
      border-top: 2px solid var(--pink);
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(44,255,136,.76);
      box-shadow: 0 22px 70px rgba(0,0,0,.11);
    }

    .service-card {
      min-height: 235px;
      grid-column: span 3;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card.tall {
      min-height: 315px;
      grid-row: span 2;
    }

    .service-card.slim {
      grid-column: span 2;
      min-height: 210px;
    }

    .card-num {
      color: var(--pink);
      font-weight: 900;
      font-size: 13px;
      margin-bottom: 12px;
    }

    .card-title {
      font-size: 21px;
      font-weight: 800;
      line-height: 1.28;
      margin: 0 0 10px;
    }

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

    .mini-badge {
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 7px;
      margin-top: 18px;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(44,255,136,.15);
      color: #0d7a3c;
      font-size: 12px;
      font-weight: 800;
    }

    .data-dashboard {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      align-items: stretch;
    }

    .data-panel {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.05);
      padding: 26px;
      min-height: 430px;
      position: relative;
    }

    .meter-list {
      display: grid;
      gap: 18px;
      margin-top: 30px;
    }

    .meter-item {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      align-items: center;
      gap: 16px;
      color: rgba(245,255,247,.82);
      font-size: 14px;
    }

    .meter-track {
      height: 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.1);
      overflow: hidden;
    }

    .meter-fill {
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--green), var(--cyan));
    }

    .metric-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .metric-card {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 24px;
      background: rgba(255,255,255,.06);
      padding: 22px;
      min-height: 190px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .metric-card.big {
      grid-column: span 2;
      min-height: 210px;
    }

    .metric-value {
      font-size: clamp(36px, 5vw, 56px);
      line-height: 1;
      font-weight: 900;
      color: var(--green);
    }

    .metric-card:nth-child(2) .metric-value { color: var(--pink); }
    .metric-card:nth-child(3) .metric-value { color: var(--orange); }

    .metric-title {
      font-weight: 800;
      margin-top: 16px;
      margin-bottom: 6px;
    }

    .metric-text {
      color: rgba(245,255,247,.68);
      font-size: 14px;
      margin: 0;
    }

    .case-layout {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 22px;
      align-items: stretch;
    }

    .case-feature {
      min-height: 520px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(160deg, rgba(17,20,17,.96), rgba(17,20,17,.88)),
        linear-gradient(90deg, rgba(44,255,136,.16), rgba(255,61,138,.14));
      color: var(--text-light);
      padding: 30px;
      position: relative;
      overflow: hidden;
    }

    .case-feature::before {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 22px;
      pointer-events: none;
    }

    .case-stack {
      display: grid;
      gap: 16px;
    }

    .case-card {
      min-height: 158px;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 16px;
      align-items: start;
    }

    .case-chip {
      width: 44px;
      height: 44px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #08100c;
      background: var(--green);
      font-weight: 900;
      flex: none;
    }

    .flow-wrap {
      display: grid;
      grid-template-columns: 1fr .78fr;
      gap: 22px;
      align-items: start;
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 16px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      top: 32px;
      bottom: 32px;
      left: 30px;
      width: 2px;
      background: linear-gradient(180deg, var(--green), var(--pink), var(--orange));
    }

    .step-card {
      position: relative;
      margin-left: 0;
      padding: 22px 22px 22px 78px;
      border-radius: 22px;
      border: 1px solid var(--line-dark);
      background: #fff;
      box-shadow: var(--shadow-soft);
    }

    .step-dot {
      position: absolute;
      left: 14px;
      top: 22px;
      width: 34px;
      height: 34px;
      border-radius: 14px;
      background: #111411;
      color: var(--green);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: 0 0 0 8px var(--bg-soft);
      z-index: 1;
    }

    .compare-box {
      border-radius: var(--radius-lg);
      background: #111411;
      color: var(--text-light);
      padding: 26px;
      position: sticky;
      top: 96px;
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 16px;
      background: rgba(255,255,255,.06);
      color: rgba(245,255,247,.76);
      font-size: 14px;
    }

    .check-list li::before {
      content: "✓";
      color: var(--green);
      font-weight: 900;
      flex: none;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 24px;
      align-items: start;
    }

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

    .faq-item {
      border: 1px solid var(--line-dark);
      border-radius: 20px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 10px 34px rgba(0,0,0,.05);
      transition: .25s ease;
    }

    .faq-item.active {
      border-color: rgba(44,255,136,.72);
      box-shadow: 0 18px 48px rgba(44,255,136,.12);
    }

    .faq-question {
      width: 100%;
      min-height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: var(--text-dark);
      font-weight: 800;
      text-align: left;
    }

    .faq-question:focus {
      outline: 2px solid rgba(44,255,136,.6);
      outline-offset: -2px;
    }

    .faq-toggle {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      background: #111411;
      color: var(--green);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: none;
      font-weight: 900;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--text-muted);
      font-size: 15px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .contact-section {
      background:
        radial-gradient(circle at 75% 20%, rgba(255,61,138,.15), transparent 28%),
        radial-gradient(circle at 15% 75%, rgba(44,255,136,.14), transparent 30%),
        var(--bg-dark);
      color: var(--text-light);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 28px;
      align-items: start;
    }

    .contact-note {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.05);
      padding: 28px;
    }

    .contact-form {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.06);
      padding: 24px;
      box-shadow: var(--shadow-dark);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .field {
      display: grid;
      gap: 8px;
    }

    .field.full {
      grid-column: span 2;
    }

    .field label {
      color: rgba(245,255,247,.82);
      font-size: 14px;
      font-weight: 700;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid rgba(255,255,255,.16);
      border-radius: 16px;
      background: rgba(11,15,14,.68);
      color: var(--text-light);
      padding: 13px 14px;
      min-height: 48px;
      transition: .25s ease;
    }

    .field textarea {
      resize: vertical;
      min-height: 120px;
    }

    .field input::placeholder,
    .field textarea::placeholder {
      color: rgba(245,255,247,.42);
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      outline: none;
      border-color: var(--green);
      box-shadow: 0 0 0 4px rgba(44,255,136,.13);
    }

    .form-tip {
      color: rgba(245,255,247,.62);
      font-size: 13px;
      margin: 12px 0 0;
    }

    .form-message {
      display: none;
      margin-top: 12px;
      padding: 10px 12px;
      border-radius: 14px;
      background: rgba(44,255,136,.12);
      color: var(--green);
      border: 1px solid rgba(44,255,136,.28);
      font-size: 14px;
    }

    .site-footer {
      background: #080b0a;
      color: rgba(245,255,247,.72);
      border-top: 1px solid rgba(255,255,255,.1);
      padding: 34px 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 26px;
      align-items: start;
    }

    .footer-title {
      color: var(--text-light);
      font-weight: 800;
      margin-bottom: 10px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      transition: .2s ease;
    }

    .footer-links a:hover,
    .footer-links a:focus {
      color: var(--green);
      outline: none;
    }

    .copyright {
      margin-top: 26px;
      padding-top: 18px;
      border-top: 1px solid rgba(255,255,255,.1);
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      justify-content: space-between;
      font-size: 13px;
      color: rgba(245,255,247,.54);
    }

    @media (max-width: 1024px) {
      .nav-links,
      .status-pill {
        display: none;
      }

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

      .nav-links.mobile-open {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 74px;
        display: grid;
        gap: 8px;
        padding: 14px;
        border: 1px solid rgba(255,255,255,.14);
        border-radius: 20px;
        background: rgba(11,15,14,.98);
        box-shadow: var(--shadow-dark);
      }

      .hero-stage,
      .service-layout,
      .data-dashboard,
      .case-layout,
      .flow-wrap,
      .faq-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .compare-box {
        position: static;
      }

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

    @media (max-width: 768px) {
      .site-container {
        width: min(100% - 28px, var(--container));
      }

      .section {
        padding: 62px 0;
      }

      .hero {
        min-height: auto;
        padding: 48px 0 32px;
      }

      .hero-lead {
        font-size: 15px;
      }

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

      .nav-side {
        gap: 8px;
      }

      .nav-side .btn {
        display: none;
      }

      .access-board,
      .guide-cover,
      .service-main,
      .case-feature,
      .contact-note,
      .contact-form {
        padding: 20px;
      }

      .service-cards {
        grid-template-columns: 1fr;
      }

      .service-card,
      .service-card.slim {
        grid-column: auto;
      }

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

      .metric-card.big,
      .field.full {
        grid-column: auto;
      }

      .meter-item {
        grid-template-columns: 1fr;
        gap: 8px;
      }

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

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

    @media (max-width: 520px) {
      .brand-mark span {
        max-width: 186px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

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

      .entry-tile.wide {
        grid-column: auto;
      }

      .btn {
        width: 100%;
        white-space: normal;
        text-align: center;
      }

      .tile-title {
        font-size: 20px;
      }

      .cover-title {
        font-size: 24px;
      }
    }

/* roulang page: category2 */
:root {
      --bg-dark: #0B0F0E;
      --bg-dark-2: #101413;
      --bg-light: #F7F7F2;
      --bg-soft: #FAFAF5;
      --text-dark: #171A16;
      --text-soft: rgba(23, 26, 22, .68);
      --text-light: #F5FFF7;
      --muted-light: rgba(245, 255, 247, .70);
      --line-light: rgba(255, 255, 255, .12);
      --line-dark: rgba(17, 20, 17, .12);
      --green: #2CFF88;
      --rose: #FF3D8A;
      --orange: #FFB000;
      --cyan: #18D7FF;
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --shadow-soft: 0 18px 60px rgba(0, 0, 0, .08);
      --shadow-glow: 0 0 0 1px rgba(44, 255, 136, .24), 0 20px 70px rgba(44, 255, 136, .08);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-dark);
      background: var(--bg-light);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

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

    button,
    a,
    input,
    select,
    textarea {
      -webkit-tap-highlight-color: transparent;
    }

    ::selection {
      background: rgba(44, 255, 136, .28);
      color: var(--text-light);
    }

    body::-webkit-scrollbar {
      width: 10px;
    }

    body::-webkit-scrollbar-track {
      background: #0f1312;
    }

    body::-webkit-scrollbar-thumb {
      background: linear-gradient(180deg, var(--green), var(--rose));
      border-radius: 999px;
      border: 2px solid #0f1312;
    }

    .site-container {
      width: min(100% - 40px, 1180px);
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(11, 15, 14, .94);
      border-bottom: 1px solid var(--line-light);
      backdrop-filter: blur(12px);
    }

    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-light);
      font-weight: 800;
      line-height: 1.15;
      white-space: nowrap;
    }

    .brand-icon {
      width: 30px;
      height: 30px;
      border-radius: 10px;
      position: relative;
      background:
        linear-gradient(135deg, rgba(44, 255, 136, .95), rgba(24, 215, 255, .92)),
        #142018;
      box-shadow: 0 0 22px rgba(44, 255, 136, .28);
      flex: 0 0 auto;
    }

    .brand-icon::before,
    .brand-icon::after {
      content: "";
      position: absolute;
      inset: 8px;
      border: 1px solid rgba(11, 15, 14, .68);
      border-radius: 50%;
    }

    .brand-icon::after {
      inset: 13px;
      border-radius: 0;
      border-left: 0;
      border-right: 0;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 7px;
      border: 1px solid var(--line-light);
      border-radius: 999px;
      background: rgba(255, 255, 255, .04);
    }

    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 0 15px;
      border-radius: 999px;
      color: rgba(245, 255, 247, .76);
      font-size: 14px;
      font-weight: 700;
      transition: color .22s ease, background .22s ease, transform .22s ease;
      white-space: nowrap;
    }

    .nav-links a:hover,
    .nav-links a:focus-visible {
      color: var(--text-light);
      background: rgba(44, 255, 136, .10);
      outline: none;
    }

    .nav-links a.active {
      color: #07100B;
      background: var(--green);
      box-shadow: 0 0 22px rgba(44, 255, 136, .24);
    }

    .nav-side {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
    }

    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 36px;
      padding: 0 12px;
      color: rgba(245, 255, 247, .78);
      border: 1px solid var(--line-light);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      background: rgba(255, 255, 255, .04);
      white-space: nowrap;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--green);
      box-shadow: 0 0 14px rgba(44, 255, 136, .9);
      flex: 0 0 auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-size: 14px;
      font-weight: 800;
      line-height: 1.2;
      cursor: pointer;
      transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
      text-align: center;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

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

    .btn:focus-visible {
      outline: 3px solid rgba(44, 255, 136, .32);
      outline-offset: 3px;
    }

    .btn-primary {
      color: #07100B;
      background: var(--green);
      box-shadow: 0 14px 38px rgba(44, 255, 136, .18);
    }

    .btn-primary:hover {
      background: #6CFFAC;
      box-shadow: 0 18px 46px rgba(44, 255, 136, .25);
    }

    .btn-rose {
      color: white;
      background: linear-gradient(135deg, var(--rose), #ff6d3d);
      box-shadow: 0 16px 42px rgba(255, 61, 138, .22);
    }

    .btn-outline {
      color: var(--text-light);
      border-color: rgba(245, 255, 247, .24);
      background: rgba(255, 255, 255, .04);
    }

    .btn-outline:hover {
      border-color: var(--cyan);
      background: rgba(24, 215, 255, .12);
    }

    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 999px;
      border: 1px solid var(--line-light);
      color: var(--text-light);
      background: rgba(255, 255, 255, .06);
      cursor: pointer;
      transition: background .22s ease, border-color .22s ease;
    }

    .menu-btn:hover,
    .menu-btn:focus-visible {
      background: rgba(44, 255, 136, .12);
      border-color: rgba(44, 255, 136, .5);
      outline: none;
    }

    .grid-bg {
      position: relative;
      color: var(--text-light);
      background:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
        radial-gradient(circle at 18% 16%, rgba(44, 255, 136, .14), transparent 28%),
        radial-gradient(circle at 88% 22%, rgba(255, 61, 138, .13), transparent 26%),
        var(--bg-dark);
      background-size: 34px 34px, 34px 34px, auto, auto, auto;
      overflow: hidden;
    }

    .grid-bg::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .035), transparent);
      opacity: .55;
      transform: skewY(-5deg);
    }

    .inner-hero {
      position: relative;
      padding: 86px 0 48px;
    }

    .hero-kicker,
    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      line-height: 1.2;
    }

    .hero-kicker {
      color: var(--green);
      border: 1px solid rgba(44, 255, 136, .32);
      background: rgba(44, 255, 136, .08);
    }

    .section-kicker {
      color: #0A5B31;
      background: rgba(44, 255, 136, .16);
    }

    .hero-title {
      margin-top: 18px;
      max-width: 880px;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.12;
      font-weight: 800;
    }

    .hero-title .mark {
      color: var(--green);
      text-decoration: underline;
      text-decoration-color: var(--rose);
      text-underline-offset: 8px;
      text-decoration-thickness: 4px;
    }

    .hero-summary {
      margin-top: 20px;
      max-width: 760px;
      color: var(--muted-light);
      font-size: 17px;
    }

    .group-panel {
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .055);
      box-shadow: var(--shadow-glow);
      overflow: hidden;
    }

    .group-panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 16px 18px;
      border-bottom: 1px solid rgba(255, 255, 255, .12);
    }

    .progress-line {
      height: 8px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .10);
      overflow: hidden;
    }

    .progress-line span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--green), var(--cyan), var(--rose));
    }

    .hero-tabs {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 16px 0 4px;
      scrollbar-width: none;
    }

    .hero-tabs::-webkit-scrollbar {
      display: none;
    }

    .hero-tabs a {
      flex: 0 0 auto;
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, .14);
      color: rgba(245, 255, 247, .78);
      font-weight: 800;
      font-size: 14px;
      background: rgba(255, 255, 255, .05);
      transition: border-color .22s ease, background .22s ease, color .22s ease;
    }

    .hero-tabs a:hover {
      color: var(--text-light);
      border-color: var(--green);
      background: rgba(44, 255, 136, .10);
    }

    .section {
      padding: 92px 0;
    }

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

    .section-dark {
      color: var(--text-light);
      background: var(--bg-dark-2);
    }

    .section-title {
      margin-top: 14px;
      font-size: clamp(26px, 4vw, 38px);
      line-height: 1.22;
      font-weight: 800;
      color: inherit;
    }

    .section-desc {
      margin-top: 14px;
      max-width: 760px;
      color: var(--text-soft);
      font-size: 16px;
    }

    .section-dark .section-desc {
      color: var(--muted-light);
    }

    .layout-shell {
      display: grid;
      grid-template-columns: 270px minmax(0, 1fr);
      gap: 28px;
      align-items: start;
    }

    .channel-side {
      position: sticky;
      top: 102px;
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
        rgba(255, 255, 255, .045);
      background-size: 24px 24px;
      padding: 14px;
    }

    .channel-side a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 13px 14px;
      border-radius: 16px;
      color: rgba(245, 255, 247, .74);
      font-weight: 800;
      font-size: 14px;
      border: 1px solid transparent;
      transition: background .22s ease, border-color .22s ease, color .22s ease, transform .22s ease;
    }

    .channel-side a:hover,
    .channel-side a.active {
      color: var(--text-light);
      background: rgba(44, 255, 136, .09);
      border-color: rgba(44, 255, 136, .34);
      transform: translateX(2px);
    }

    .channel-side a span:last-child {
      color: var(--green);
      font-size: 12px;
    }

    .content-stack {
      display: grid;
      gap: 18px;
    }

    .access-card {
      position: relative;
      border: 1px solid rgba(255, 255, 255, .13);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .055);
      padding: 22px;
      overflow: hidden;
      transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
    }

    .access-card::after {
      content: "";
      position: absolute;
      right: 18px;
      top: 18px;
      width: 36px;
      height: 3px;
      border-radius: 999px;
      background: var(--rose);
      box-shadow: 0 0 18px rgba(255, 61, 138, .45);
    }

    .access-card:hover {
      transform: translateY(-3px);
      border-color: rgba(44, 255, 136, .48);
      box-shadow: 0 24px 70px rgba(0, 0, 0, .18);
    }

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

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      min-height: 30px;
      padding: 0 11px;
      border-radius: 999px;
      color: rgba(245, 255, 247, .82);
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .12);
      font-size: 12px;
      font-weight: 800;
    }

    .tag.hot {
      color: #13040A;
      background: var(--rose);
      border-color: transparent;
    }

    .tag.green {
      color: #07100B;
      background: var(--green);
      border-color: transparent;
    }

    .tag.orange {
      color: #151000;
      background: var(--orange);
      border-color: transparent;
    }

    .check-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      align-items: stretch;
    }

    .check-panel,
    .light-card,
    .flow-card,
    .faq-item {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
    }

    .check-panel {
      color: var(--text-light);
      background:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
        var(--bg-dark);
      background-size: 28px 28px;
      border: 1px solid rgba(255, 255, 255, .14);
      padding: 26px;
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin-top: 22px;
    }

    .check-list li,
    .signal-list li {
      list-style: none;
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .10);
    }

    .check-icon {
      width: 24px;
      height: 24px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #07100B;
      background: var(--green);
      font-weight: 900;
      flex: 0 0 auto;
      line-height: 1;
    }

    .light-card {
      background: white;
      border: 1px solid var(--line-dark);
      padding: 24px;
      transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
    }

    .light-card:hover {
      transform: translateY(-3px);
      border-color: rgba(255, 61, 138, .40);
      box-shadow: 0 22px 70px rgba(0, 0, 0, .10);
    }

    .compat-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      margin-top: 28px;
    }

    .compat-card {
      min-height: 220px;
      border-radius: 24px;
      padding: 22px;
      background: white;
      border: 1px solid var(--line-dark);
      box-shadow: var(--shadow-soft);
      transition: transform .24s ease, border-color .24s ease;
    }

    .compat-card:nth-child(2) {
      margin-top: 28px;
    }

    .compat-card:nth-child(3) {
      margin-top: 56px;
    }

    .compat-card:hover {
      transform: translateY(-4px);
      border-color: var(--green);
    }

    .mini-stat {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 18px;
    }

    .mini-stat div {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .12);
    }

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

    .flow-wrap {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 28px;
    }

    .flow-card {
      position: relative;
      min-height: 230px;
      padding: 22px;
      background: white;
      border: 1px solid var(--line-dark);
      overflow: hidden;
      transition: transform .24s ease, border-color .24s ease;
    }

    .flow-card::before {
      content: attr(data-step);
      position: absolute;
      right: 18px;
      top: 14px;
      color: rgba(17, 20, 17, .08);
      font-size: 58px;
      line-height: 1;
      font-weight: 900;
    }

    .flow-card:hover {
      transform: translateY(-4px);
      border-color: var(--rose);
    }

    .faq-wrap {
      display: grid;
      gap: 12px;
      margin-top: 30px;
      max-width: 920px;
    }

    .faq-item {
      background: white;
      border: 1px solid var(--line-dark);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      min-height: 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: var(--text-dark);
      text-align: left;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-question:focus-visible {
      outline: 3px solid rgba(44, 255, 136, .35);
      outline-offset: -3px;
    }

    .faq-icon {
      width: 30px;
      height: 30px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      background: rgba(44, 255, 136, .14);
      color: #08733E;
      font-weight: 900;
      transition: transform .22s ease, background .22s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px 20px;
      color: var(--text-soft);
    }

    .faq-item.open {
      border-color: rgba(44, 255, 136, .55);
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--green);
      color: #07100B;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: start;
    }

    .contact-card {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, .14);
      background: rgba(255, 255, 255, .055);
      padding: 26px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .field {
      display: grid;
      gap: 8px;
    }

    .field.full {
      grid-column: 1 / -1;
    }

    .field label {
      color: rgba(245, 255, 247, .78);
      font-size: 13px;
      font-weight: 800;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border-radius: 16px;
      border: 1px solid rgba(255, 255, 255, .16);
      color: var(--text-light);
      background: rgba(255, 255, 255, .07);
      padding: 13px 14px;
      outline: none;
      transition: border-color .22s ease, box-shadow .22s ease, background .22s ease;
    }

    .field textarea {
      min-height: 126px;
      resize: vertical;
    }

    .field input::placeholder,
    .field textarea::placeholder {
      color: rgba(245, 255, 247, .42);
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: var(--green);
      box-shadow: 0 0 0 4px rgba(44, 255, 136, .12);
      background: rgba(255, 255, 255, .10);
    }

    .site-footer {
      color: rgba(245, 255, 247, .72);
      background:
        linear-gradient(rgba(255, 255, 255, .026) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .026) 1px, transparent 1px),
        #070A09;
      background-size: 30px 30px;
      padding: 58px 0 30px;
      border-top: 1px solid var(--line-light);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .7fr .7fr;
      gap: 36px;
      align-items: start;
    }

    .footer-title {
      color: var(--text-light);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: rgba(245, 255, 247, .68);
      transition: color .22s ease, transform .22s ease;
    }

    .footer-links a:hover {
      color: var(--green);
      transform: translateX(2px);
    }

    .copyright {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 38px;
      padding-top: 22px;
      border-top: 1px solid var(--line-light);
      font-size: 13px;
      color: rgba(245, 255, 247, .52);
    }

    @media (max-width: 1024px) {
      .site-container {
        width: min(100% - 32px, 920px);
      }

      .nav-links {
        position: fixed;
        left: 16px;
        right: 16px;
        top: 78px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        border-radius: 22px;
        padding: 10px;
        background: rgba(11, 15, 14, .98);
        box-shadow: 0 24px 70px rgba(0, 0, 0, .32);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        justify-content: center;
      }

      .menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .status-pill {
        display: none;
      }

      .layout-shell,
      .check-grid,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .channel-side {
        position: static;
        display: flex;
        overflow-x: auto;
        scrollbar-width: none;
      }

      .channel-side::-webkit-scrollbar {
        display: none;
      }

      .channel-side a {
        flex: 0 0 auto;
        min-width: 154px;
      }

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

      .compat-card:nth-child(2),
      .compat-card:nth-child(3) {
        margin-top: 0;
      }

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

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

      .footer-grid > div:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 640px) {
      .site-container {
        width: min(100% - 28px, 560px);
      }

      .nav-wrap {
        min-height: 66px;
        gap: 10px;
      }

      .brand-mark span:last-child {
        max-width: 168px;
        white-space: normal;
      }

      .nav-side .btn-primary {
        display: none;
      }

      .inner-hero {
        padding: 58px 0 36px;
      }

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

      .section {
        padding: 58px 0;
      }

      .group-panel-head {
        align-items: flex-start;
        flex-direction: column;
      }

      .mini-stat,
      .compat-grid,
      .flow-wrap,
      .form-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .access-card,
      .check-panel,
      .light-card,
      .flow-card,
      .contact-card {
        padding: 20px;
      }

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

      .btn {
        width: 100%;
        min-height: 46px;
        padding-inline: 16px;
      }

      .hero-tabs a,
      .channel-side a {
        font-size: 13px;
      }
    }

/* roulang page: category1 */
:root {
      --bg-dark: #0B0F0E;
      --bg-panel: #101413;
      --bg-soft: #F7F7F2;
      --bg-card: #FFFFFF;
      --text-main: #171A16;
      --text-muted: #667067;
      --text-light: #F5FFF7;
      --line-dark: rgba(255,255,255,.12);
      --line-soft: rgba(17,20,17,.12);
      --green: #2CFF88;
      --pink: #FF3D8A;
      --orange: #FFB000;
      --cyan: #18D7FF;
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --shadow-soft: 0 18px 60px rgba(0,0,0,.08);
      --shadow-glow: 0 0 0 1px rgba(44,255,136,.18), 0 24px 80px rgba(44,255,136,.08);
    }

    * { 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(--text-main);
      background: var(--bg-soft);
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img, svg { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    ::selection { background: var(--green); color: #08100b; }

    .site-container {
      width: min(100% - 32px, 1240px);
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(11,15,14,.94);
      border-bottom: 1px solid var(--line-dark);
      backdrop-filter: blur(14px);
    }
    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-light);
      font-weight: 800;
      white-space: nowrap;
    }
    .brand-icon {
      width: 28px;
      height: 28px;
      border-radius: 9px;
      background:
        linear-gradient(135deg, var(--green), var(--cyan) 52%, var(--pink));
      position: relative;
      box-shadow: 0 0 22px rgba(44,255,136,.26);
    }
    .brand-icon::after {
      content: "";
      position: absolute;
      inset: 7px;
      border: 1px solid rgba(11,15,14,.76);
      border-radius: 5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 7px;
      border: 1px solid var(--line-dark);
      border-radius: 999px;
      background: rgba(255,255,255,.04);
    }
    .nav-links a {
      color: rgba(245,255,247,.76);
      font-size: 14px;
      font-weight: 650;
      padding: 9px 15px;
      border-radius: 999px;
      transition: .22s ease;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: #06100a;
      background: var(--green);
    }
    .nav-side {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: rgba(245,255,247,.86);
      font-size: 13px;
      border: 1px solid var(--line-dark);
      border-radius: 999px;
      padding: 8px 12px;
      background: rgba(255,255,255,.04);
      white-space: nowrap;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 14px var(--green);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 750;
      font-size: 14px;
      border: 1px solid transparent;
      transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
      text-align: center;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    .faq-trigger:focus-visible {
      outline: 3px solid rgba(44,255,136,.35);
      outline-offset: 3px;
    }
    .btn-primary {
      background: var(--green);
      color: #07100b;
      box-shadow: 0 12px 34px rgba(44,255,136,.18);
    }
    .btn-primary:hover { box-shadow: 0 18px 44px rgba(44,255,136,.28); }
    .btn-dark {
      background: #111411;
      color: var(--text-light);
      border-color: rgba(255,255,255,.12);
    }
    .btn-line {
      color: var(--text-light);
      border-color: var(--line-dark);
      background: rgba(255,255,255,.04);
    }
    .btn-line:hover { border-color: var(--pink); background: rgba(255,61,138,.12); }
    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 999px;
      color: var(--text-light);
      border: 1px solid var(--line-dark);
      background: rgba(255,255,255,.05);
    }

    .inner-hero {
      position: relative;
      background:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
        radial-gradient(circle at 20% 20%, rgba(44,255,136,.18), transparent 30%),
        radial-gradient(circle at 78% 32%, rgba(255,61,138,.18), transparent 32%),
        var(--bg-dark);
      background-size: 34px 34px, 34px 34px, auto, auto, auto;
      color: var(--text-light);
      padding: 88px 0 54px;
      overflow: hidden;
    }
    .inner-hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--green), var(--pink), transparent);
      opacity: .72;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
      gap: 36px;
      align-items: end;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--green);
      font-weight: 800;
      font-size: 13px;
      border: 1px solid rgba(44,255,136,.32);
      border-radius: 999px;
      padding: 7px 12px;
      background: rgba(44,255,136,.08);
      margin-bottom: 18px;
    }
    h1 {
      font-size: clamp(34px, 5.4vw, 58px);
      line-height: 1.12;
      margin: 0;
      font-weight: 850;
      letter-spacing: 0;
      max-width: 860px;
    }
    .hero-copy {
      margin-top: 18px;
      max-width: 760px;
      color: rgba(245,255,247,.76);
      font-size: 17px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .slot-panel {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-xl);
      background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.035));
      padding: 18px;
      box-shadow: var(--shadow-glow);
    }
    .slot-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line-dark);
      color: rgba(245,255,247,.82);
      font-weight: 750;
    }
    .time-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 16px;
    }
    .time-chip {
      border: 1px solid var(--line-dark);
      border-radius: 18px;
      padding: 13px;
      background: rgba(11,15,14,.58);
      min-height: 92px;
      transition: .22s ease;
    }
    .time-chip:hover {
      transform: translateY(-3px);
      border-color: var(--green);
      background: rgba(44,255,136,.08);
    }
    .time-chip strong { display: block; color: var(--text-light); font-size: 16px; }
    .time-chip span { display: block; color: rgba(245,255,247,.62); font-size: 13px; margin-top: 4px; }
    .section { padding: 82px 0; }
    .section-soft { background: var(--bg-soft); }
    .section-dark {
      background:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
        var(--bg-panel);
      background-size: 32px 32px;
      color: var(--text-light);
    }
    .section-kicker {
      color: #0b8f50;
      font-size: 13px;
      font-weight: 850;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: clamp(26px, 3.6vw, 40px);
      line-height: 1.2;
      font-weight: 850;
      margin: 0;
      letter-spacing: 0;
    }
    .section-desc {
      color: var(--text-muted);
      max-width: 760px;
      margin-top: 14px;
      font-size: 16px;
    }
    .section-dark .section-desc { color: rgba(245,255,247,.68); }

    .category-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 24px;
      margin-top: 34px;
      align-items: start;
    }
    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 14px;
      border: 1px solid var(--line-soft);
      border-radius: 24px;
      background: rgba(255,255,255,.62);
      box-shadow: var(--shadow-soft);
      margin-bottom: 20px;
    }
    .filter-pill {
      border: 1px solid var(--line-soft);
      border-radius: 999px;
      background: #fff;
      padding: 9px 14px;
      color: var(--text-main);
      font-weight: 750;
      font-size: 14px;
      transition: .22s ease;
    }
    .filter-pill:hover,
    .filter-pill.active {
      background: #111411;
      color: var(--text-light);
      border-color: #111411;
    }
    .card-flow {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }
    .entry-card {
      position: relative;
      min-height: 260px;
      border: 1px solid var(--line-soft);
      border-radius: var(--radius-xl);
      background: var(--bg-card);
      padding: 20px;
      box-shadow: var(--shadow-soft);
      transition: .24s ease;
      overflow: hidden;
    }
    .entry-card:nth-child(1) {
      grid-column: span 2;
      background:
        linear-gradient(135deg, rgba(44,255,136,.16), transparent 44%),
        #fff;
    }
    .entry-card:nth-child(4) {
      min-height: 320px;
      background:
        linear-gradient(135deg, rgba(255,61,138,.12), transparent 46%),
        #fff;
    }
    .entry-card:hover {
      transform: translateY(-4px);
      border-color: var(--pink);
      box-shadow: 0 24px 70px rgba(0,0,0,.12);
    }
    .card-no {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #08100b;
      background: var(--green);
      border-radius: 999px;
      padding: 6px 11px;
      font-size: 12px;
      font-weight: 850;
    }
    .entry-card h2,
    .entry-card h3 {
      margin: 18px 0 10px;
      font-size: 22px;
      line-height: 1.25;
      font-weight: 850;
    }
    .entry-card p {
      color: var(--text-muted);
      margin: 0;
      font-size: 15px;
    }
    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }
    .tag {
      display: inline-flex;
      border: 1px solid var(--line-soft);
      border-radius: 999px;
      padding: 5px 9px;
      color: #3d463e;
      background: rgba(247,247,242,.8);
      font-size: 12px;
      font-weight: 700;
    }
    .card-bottom {
      position: absolute;
      left: 20px;
      right: 20px;
      bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      border-top: 1px solid var(--line-soft);
      padding-top: 14px;
    }
    .mini-link {
      font-weight: 850;
      color: #0b8f50;
      font-size: 14px;
    }
    .side-box {
      position: sticky;
      top: 98px;
      border: 1px solid var(--line-soft);
      border-radius: var(--radius-xl);
      background: #fff;
      padding: 20px;
      box-shadow: var(--shadow-soft);
    }
    .side-title {
      font-size: 18px;
      font-weight: 850;
      margin-bottom: 12px;
    }
    .check-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .check-list li {
      display: grid;
      grid-template-columns: 12px 1fr;
      gap: 10px;
      color: var(--text-muted);
      font-size: 14px;
      padding: 10px;
      border-radius: 14px;
      background: #F7F7F2;
    }
    .check-list li::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--green);
      margin-top: 8px;
      box-shadow: 0 0 12px rgba(44,255,136,.7);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 24px;
      margin-top: 34px;
      align-items: stretch;
    }
    .step-summary {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-xl);
      padding: 24px;
      background: rgba(255,255,255,.06);
    }
    .step-summary strong {
      display: block;
      color: var(--green);
      font-size: 44px;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-items {
      display: grid;
      gap: 14px;
    }
    .step-item {
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 14px;
      align-items: start;
      border: 1px solid var(--line-dark);
      border-radius: 22px;
      padding: 17px;
      background: rgba(255,255,255,.045);
      transition: .22s ease;
    }
    .step-item:hover {
      border-color: var(--green);
      transform: translateX(3px);
    }
    .step-index {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: rgba(44,255,136,.13);
      color: var(--green);
      font-weight: 900;
      border: 1px solid rgba(44,255,136,.28);
    }
    .step-item h3 {
      margin: 0 0 4px;
      font-size: 18px;
      font-weight: 850;
    }
    .step-item p {
      margin: 0;
      color: rgba(245,255,247,.66);
      font-size: 15px;
    }

    .notice-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 32px;
    }
    .notice-card {
      border-radius: 24px;
      padding: 18px;
      background: #fff;
      border: 1px solid var(--line-soft);
      box-shadow: var(--shadow-soft);
      min-height: 190px;
      transition: .22s ease;
    }
    .notice-card:hover {
      transform: translateY(-3px);
      border-color: var(--green);
    }
    .notice-card .mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: #111411;
      color: var(--green);
      font-weight: 900;
      margin-bottom: 16px;
    }
    .notice-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      font-weight: 850;
    }
    .notice-card p {
      margin: 0;
      color: var(--text-muted);
      font-size: 14px;
    }

    .faq-wrap {
      margin-top: 30px;
      display: grid;
      gap: 12px;
    }
    .faq-item {
      border: 1px solid var(--line-soft);
      border-radius: 18px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 12px 40px rgba(0,0,0,.05);
    }
    .faq-trigger {
      width: 100%;
      min-height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 16px 18px;
      border: 0;
      background: transparent;
      color: var(--text-main);
      font-weight: 850;
      text-align: left;
    }
    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #111411;
      color: var(--green);
      flex: 0 0 auto;
    }
    .faq-panel {
      display: none;
      padding: 0 18px 18px;
      color: var(--text-muted);
      font-size: 15px;
    }
    .faq-item.open {
      border-color: rgba(44,255,136,.55);
      background: linear-gradient(90deg, rgba(44,255,136,.08), #fff 28%);
    }
    .faq-item.open .faq-panel { display: block; }
    .faq-item.open .faq-icon { background: var(--green); color: #07100b; }

    .contact-block {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 26px;
      align-items: start;
    }
    .contact-card {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-xl);
      padding: 24px;
      background: rgba(255,255,255,.055);
    }
    .contact-form {
      display: grid;
      gap: 14px;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }
    .field label {
      display: block;
      color: rgba(245,255,247,.72);
      font-size: 13px;
      font-weight: 750;
      margin-bottom: 7px;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line-dark);
      border-radius: 16px;
      min-height: 48px;
      padding: 12px 14px;
      background: rgba(0,0,0,.22);
      color: var(--text-light);
      outline: none;
      transition: .2s ease;
    }
    .field textarea { min-height: 118px; resize: vertical; }
    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: var(--green);
      box-shadow: 0 0 0 4px rgba(44,255,136,.12);
    }
    .field input::placeholder,
    .field textarea::placeholder { color: rgba(245,255,247,.42); }

    .site-footer {
      background: #080B0A;
      color: rgba(245,255,247,.72);
      padding: 54px 0 26px;
      border-top: 1px solid var(--line-dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .7fr .7fr;
      gap: 34px;
    }
    .footer-title {
      color: var(--text-light);
      font-weight: 850;
      margin-bottom: 12px;
    }
    .footer-links {
      display: grid;
      gap: 9px;
    }
    .footer-links a {
      color: rgba(245,255,247,.66);
      transition: .2s ease;
    }
    .footer-links a:hover { color: var(--green); }
    .copyright {
      margin-top: 34px;
      padding-top: 18px;
      border-top: 1px solid var(--line-dark);
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      font-size: 13px;
      color: rgba(245,255,247,.48);
    }

    @media (max-width: 1024px) {
      .status-pill { display: none; }
      .hero-grid,
      .category-layout,
      .steps-grid,
      .contact-block {
        grid-template-columns: 1fr;
      }
      .side-box { position: static; }
      .card-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .notice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-wrap { min-height: 66px; }
      .menu-btn { display: grid; place-items: center; }
      .nav-links {
        position: absolute;
        top: 66px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        border-radius: 22px;
        padding: 12px;
        background: rgba(11,15,14,.98);
        box-shadow: 0 24px 80px rgba(0,0,0,.35);
      }
      .nav-links.open { display: flex; }
      .nav-links a { text-align: center; }
      .nav-side .btn { display: none; }
      .inner-hero { padding: 58px 0 42px; }
      .time-list,
      .form-grid {
        grid-template-columns: 1fr;
      }
      .card-flow,
      .notice-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .entry-card:nth-child(1) { grid-column: auto; }
      .entry-card { min-height: 270px; }
      .section { padding: 58px 0; }
      .filter-bar {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: thin;
      }
      .filter-pill { flex: 0 0 auto; }
      .copyright { display: grid; }
    }

    @media (max-width: 520px) {
      .site-container { width: min(100% - 28px, 1240px); }
      .brand-mark span:last-child { max-width: 190px; overflow: hidden; text-overflow: ellipsis; }
      .hero-actions .btn { width: 100%; }
      .slot-panel,
      .entry-card,
      .side-box,
      .contact-card {
        border-radius: 22px;
      }
      .card-bottom {
        position: static;
        margin-top: 24px;
      }
    }