/* roulang page: index */
:root {
      --bg: #070609;
      --bg-2: #0b0a0e;
      --panel: #121016;
      --panel-2: #18131f;
      --panel-3: #211827;
      --gold: #d8b76a;
      --gold-2: #f1d995;
      --bronze: #9d7640;
      --green: #3fbf8f;
      --purple: #8b4bd8;
      --ruby: #b94b6d;
      --amber: #d99a43;
      --text: #f7f1e6;
      --muted: #c9c1b6;
      --weak: #8d8491;
      --line: rgba(216, 183, 106, .24);
      --line-2: rgba(139, 75, 216, .22);
      --danger: #d06f56;
      --shadow: 0 18px 50px rgba(0, 0, 0, .42);
      --gold-shadow: 0 12px 34px rgba(216, 183, 106, .22);
      --radius-sm: 12px;
      --radius: 18px;
      --radius-lg: 24px;
      --container: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      min-height: 100vh;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      background:
        radial-gradient(circle at 18% 8%, rgba(139, 75, 216, .18), transparent 28%),
        radial-gradient(circle at 86% 12%, rgba(185, 75, 109, .14), transparent 30%),
        linear-gradient(180deg, #070609 0%, #0b0a0e 42%, #09070b 100%);
      color: var(--text);
      line-height: 1.75;
    }

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

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

    button, input, select {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: none;
      color: inherit;
    }

    input, select {
      width: 100%;
      border: 1px solid var(--line);
      outline: none;
      background: #0d0b11;
      color: var(--text);
    }

    input::placeholder {
      color: #8a818c;
    }

    input:focus, select:focus, button:focus-visible, a:focus-visible {
      outline: 2px solid rgba(241, 217, 149, .72);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(7, 6, 9, .94);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 10px 28px rgba(0, 0, 0, .32);
    }

    .nav-wrap {
      min-height: 78px;
      display: grid;
      grid-template-columns: auto minmax(320px, 1fr) auto;
      align-items: center;
      gap: 22px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: max-content;
      font-weight: 850;
      color: var(--text);
      line-height: 1.15;
    }

    .logo-mark {
      width: 36px;
      height: 36px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: #111;
      font-weight: 900;
      background: linear-gradient(135deg, var(--gold-2), var(--gold) 54%, var(--bronze));
      box-shadow: var(--gold-shadow);
    }

    .logo-text {
      max-width: 210px;
      font-size: 15px;
    }

    .nav-search {
      height: 52px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #100d14;
      display: grid;
      grid-template-columns: 24px 1fr auto;
      align-items: center;
      gap: 10px;
      padding: 0 8px 0 18px;
      transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
    }

    .nav-search:focus-within {
      border-color: var(--gold);
      background: #17111e;
      box-shadow: 0 0 0 4px rgba(216, 183, 106, .08);
    }

    .nav-search input {
      border: 0;
      background: transparent;
      height: 100%;
      min-width: 0;
    }

    .nav-search svg {
      color: var(--gold);
    }

    .search-submit {
      height: 38px;
      padding: 0 18px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--gold-2), var(--gold));
      color: #14100a;
      font-weight: 800;
      transition: transform .2s ease, filter .2s ease;
    }

    .search-submit:hover {
      transform: translateY(-1px);
      filter: brightness(1.06);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      justify-content: flex-end;
    }

    .nav-link {
      position: relative;
      padding: 9px 12px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      transition: color .2s ease, background .2s ease, border-color .2s ease;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: var(--gold-2);
      background: rgba(216, 183, 106, .08);
    }

    .nav-link.active {
      color: var(--gold-2);
      border-color: var(--line);
      background: rgba(216, 183, 106, .1);
    }

    .nav-link.active::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--gold);
      position: absolute;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
      box-shadow: 0 0 12px rgba(216, 183, 106, .72);
    }

    .nav-link.active {
      padding-left: 18px;
    }

    .quick-download {
      padding: 10px 16px;
      border-radius: 14px;
      background: #1a1410;
      border: 1px solid rgba(216, 183, 106, .5);
      color: var(--gold-2);
      font-weight: 750;
      box-shadow: 0 8px 22px rgba(216, 183, 106, .12);
    }

    .mobile-actions {
      display: none;
      align-items: center;
      gap: 10px;
    }

    .icon-btn {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: #120f16;
      color: var(--gold-2);
      display: grid;
      place-items: center;
    }

    .mobile-pills {
      display: none;
      gap: 10px;
      overflow-x: auto;
      padding: 0 20px 14px;
      scrollbar-width: none;
    }

    .mobile-pills::-webkit-scrollbar {
      display: none;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      border: 1px solid var(--line);
      color: var(--gold-2);
      background: rgba(216, 183, 106, .08);
      padding: 7px 12px;
      font-size: 13px;
      white-space: nowrap;
    }

    main {
      overflow: hidden;
    }

    section {
      padding: 78px 0;
      position: relative;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 30px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--gold-2);
      border: 1px solid var(--line);
      background: rgba(216, 183, 106, .07);
      padding: 6px 12px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 750;
      margin-bottom: 12px;
    }

    h1, h2, h3 {
      line-height: 1.16;
      letter-spacing: 0;
    }

    h1 {
      font-size: clamp(32px, 5vw, 54px);
      font-weight: 900;
      max-width: 920px;
    }

    h2 {
      font-size: clamp(28px, 3.4vw, 38px);
      font-weight: 850;
      margin-bottom: 14px;
    }

    h3 {
      font-size: 20px;
      font-weight: 800;
    }

    p {
      color: var(--muted);
    }

    .hero {
      min-height: calc(100vh - 78px);
      padding: 54px 0 40px;
      display: flex;
      align-items: center;
    }

    .hero-stage {
      width: 100%;
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 28px;
      align-items: stretch;
    }

    .hero-banner {
      min-height: 560px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(216, 183, 106, .16), transparent 26%),
        linear-gradient(160deg, #111016 0%, #181020 58%, #0a080d 100%);
      box-shadow: var(--shadow);
      padding: 46px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .hero-banner::after {
      content: "";
      position: absolute;
      inset: 16px;
      border: 1px solid rgba(216, 183, 106, .12);
      border-radius: 20px;
      pointer-events: none;
    }

    .hero-copy {
      position: relative;
      z-index: 2;
    }

    .hero-copy p {
      margin-top: 18px;
      max-width: 760px;
      font-size: 17px;
    }

    .hero-search {
      margin-top: 28px;
      max-width: 760px;
      border-radius: 22px;
      border: 1px solid rgba(216, 183, 106, .34);
      background: #0c0a0f;
      padding: 10px;
      display: grid;
      grid-template-columns: 28px 1fr auto;
      align-items: center;
      gap: 12px;
      box-shadow: inset 0 0 0 1px rgba(139, 75, 216, .12);
    }

    .hero-search input {
      height: 50px;
      border: 0;
      background: transparent;
      font-size: 16px;
    }

    .hero-search svg {
      color: var(--gold);
      margin-left: 6px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 18px;
      border-radius: 15px;
      font-weight: 800;
      transition: transform .2s ease, border-color .2s ease, background .2s ease, filter .2s ease, color .2s ease, box-shadow .2s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--gold-2), var(--gold) 58%, var(--bronze));
      color: #130f08;
      box-shadow: var(--gold-shadow);
    }

    .btn-secondary {
      border: 1px solid rgba(216, 183, 106, .42);
      color: var(--gold-2);
      background: #121016;
    }

    .btn-ghost {
      color: var(--gold-2);
      background: rgba(216, 183, 106, .08);
      border: 1px solid transparent;
    }

    .btn:hover {
      transform: translateY(-1px);
      filter: brightness(1.06);
    }

    .btn-secondary:hover, .btn-ghost:hover {
      border-color: var(--gold);
      background: rgba(216, 183, 106, .12);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 18px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .hero-bottom {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 34px;
    }

    .data-tile {
      border: 1px solid rgba(216, 183, 106, .2);
      background: rgba(18, 16, 22, .82);
      border-radius: 18px;
      padding: 18px;
    }

    .data-tile strong {
      display: block;
      color: var(--gold-2);
      font-size: 24px;
      line-height: 1;
      margin-bottom: 8px;
    }

    .data-tile span {
      color: var(--weak);
      font-size: 13px;
    }

    .support-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: #100d14;
      box-shadow: var(--shadow);
      padding: 24px;
      align-self: stretch;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .progress-ring {
      width: 210px;
      height: 210px;
      margin: 6px auto;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: conic-gradient(var(--gold) 0 72%, rgba(216, 183, 106, .12) 72% 100%);
      position: relative;
      box-shadow: inset 0 0 38px rgba(0, 0, 0, .44), 0 0 32px rgba(216, 183, 106, .12);
    }

    .progress-ring::before {
      content: "";
      position: absolute;
      width: 156px;
      height: 156px;
      border-radius: 50%;
      background: #0b0a0e;
      border: 1px solid rgba(216, 183, 106, .2);
    }

    .progress-text {
      position: relative;
      text-align: center;
    }

    .progress-text strong {
      display: block;
      color: var(--gold-2);
      font-size: 40px;
      line-height: 1;
    }

    .progress-text span {
      color: var(--weak);
      font-size: 13px;
    }

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

    .tier {
      padding: 13px;
      border: 1px solid rgba(216, 183, 106, .18);
      background: #17121b;
      border-radius: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .tier b {
      color: var(--text);
      font-size: 14px;
    }

    .tier small {
      color: var(--weak);
      display: block;
      margin-top: 2px;
    }

    .tier em {
      font-style: normal;
      color: var(--gold-2);
      font-weight: 850;
      white-space: nowrap;
    }

    .directory {
      padding-top: 68px;
      background: linear-gradient(180deg, rgba(18, 16, 22, .72), rgba(7, 6, 9, 0));
      border-top: 1px solid rgba(216, 183, 106, .08);
    }

    .directory-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 20px;
      align-items: stretch;
    }

    .catalog-panel, .index-panel, .preview-card, .spec-panel, .review-card, .news-box, .lead-panel, .faq-item, .step-card {
      border: 1px solid rgba(216, 183, 106, .2);
      background: var(--panel);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
    }

    .catalog-panel {
      padding: 26px;
    }

    .catalog-row {
      display: grid;
      grid-template-columns: 72px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 16px 0;
      border-bottom: 1px solid rgba(216, 183, 106, .12);
    }

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

    .catalog-no {
      color: var(--gold-2);
      font-weight: 900;
      font-size: 22px;
    }

    .catalog-row p {
      font-size: 14px;
      margin-top: 4px;
    }

    .status {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      padding: 5px 10px;
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .status.gold {
      color: var(--gold-2);
      background: rgba(216, 183, 106, .1);
      border: 1px solid rgba(216, 183, 106, .32);
    }

    .status.green {
      color: #9bf1c8;
      background: rgba(63, 191, 143, .1);
      border: 1px solid rgba(63, 191, 143, .28);
    }

    .status.amber {
      color: #ffd18a;
      background: rgba(217, 154, 67, .12);
      border: 1px solid rgba(217, 154, 67, .3);
    }

    .index-panel {
      padding: 24px;
      background:
        linear-gradient(145deg, rgba(139, 75, 216, .12), transparent 44%),
        var(--panel-2);
    }

    .index-panel ul {
      list-style: none;
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .index-panel li {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(216, 183, 106, .1);
      color: var(--muted);
    }

    .index-panel li:last-child {
      border-bottom: 0;
    }

    .index-panel b {
      color: var(--text);
    }

    .value-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
    }

    .value-main {
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, #19121f, #0e0c11);
      border: 1px solid var(--line);
      padding: 32px;
      min-height: 360px;
      display: grid;
      align-content: center;
    }

    .value-main p {
      font-size: 16px;
      margin-top: 14px;
      max-width: 680px;
    }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .benefit {
      border: 1px solid rgba(216, 183, 106, .18);
      background: #121016;
      border-radius: 20px;
      padding: 18px;
      min-height: 142px;
      transition: transform .2s ease, border-color .2s ease, background .2s ease;
    }

    .benefit:hover {
      transform: translateY(-2px);
      border-color: rgba(216, 183, 106, .45);
      background: #18131f;
    }

    .benefit .mini-icon {
      width: 36px;
      height: 36px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: var(--gold-2);
      background: rgba(216, 183, 106, .1);
      border: 1px solid rgba(216, 183, 106, .2);
      margin-bottom: 12px;
    }

    .benefit p {
      font-size: 14px;
      margin-top: 8px;
    }

    .screens {
      background: #0b0a0e;
      border-block: 1px solid rgba(216, 183, 106, .08);
    }

    .screen-layout {
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 22px;
      align-items: stretch;
    }

    .preview-card {
      padding: 20px;
      background:
        linear-gradient(145deg, rgba(216, 183, 106, .09), transparent 34%),
        #121016;
      overflow: hidden;
    }

    .mock-window {
      border: 1px solid rgba(216, 183, 106, .22);
      border-radius: 18px;
      background: #09080c;
      min-height: 380px;
      overflow: hidden;
    }

    .window-bar {
      height: 42px;
      display: flex;
      align-items: center;
      gap: 7px;
      padding: 0 14px;
      border-bottom: 1px solid rgba(216, 183, 106, .12);
      background: #15111a;
    }

    .dot {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--gold);
      opacity: .85;
    }

    .mock-content {
      padding: 22px;
    }

    .mock-search {
      height: 48px;
      border-radius: 999px;
      border: 1px solid rgba(216, 183, 106, .26);
      background: #121016;
      display: flex;
      align-items: center;
      padding: 0 16px;
      color: var(--weak);
      margin-bottom: 18px;
    }

    .mock-row {
      display: grid;
      grid-template-columns: 48px 1fr 92px;
      gap: 14px;
      align-items: center;
      padding: 14px;
      border: 1px solid rgba(216, 183, 106, .12);
      background: #0f0d12;
      border-radius: 16px;
      margin-bottom: 12px;
    }

    .mock-number {
      width: 48px;
      height: 48px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      background: rgba(216, 183, 106, .1);
      color: var(--gold-2);
      font-weight: 900;
    }

    .mock-line {
      height: 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .13);
      margin-bottom: 8px;
    }

    .mock-line.short {
      width: 62%;
      background: rgba(216, 183, 106, .18);
      margin-bottom: 0;
    }

    .mock-btn {
      height: 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--gold-2), var(--gold));
    }

    .slide-controls {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-top: 18px;
    }

    .arrow-group {
      display: flex;
      gap: 10px;
    }

    .arrow {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      color: var(--gold-2);
      background: #151119;
      transition: transform .2s ease, border-color .2s ease;
    }

    .arrow:hover {
      transform: translateY(-1px);
      border-color: var(--gold);
    }

    .progress-line {
      flex: 1;
      height: 6px;
      border-radius: 999px;
      background: rgba(216, 183, 106, .12);
      overflow: hidden;
    }

    .progress-line span {
      display: block;
      width: 62%;
      height: 100%;
      background: linear-gradient(90deg, var(--gold), var(--ruby));
    }

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

    .screen-note {
      padding: 18px;
      border-radius: 18px;
      border: 1px solid rgba(216, 183, 106, .18);
      background: #151119;
    }

    .screen-note.active {
      border-color: rgba(216, 183, 106, .52);
      box-shadow: inset 3px 0 0 var(--gold);
    }

    .screen-note p {
      font-size: 14px;
      margin-top: 6px;
    }

    .spec-layout {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 22px;
    }

    .checklist {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #111015;
      border: 1px solid rgba(216, 183, 106, .18);
    }

    .check-item {
      display: flex;
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px solid rgba(216, 183, 106, .1);
    }

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

    .check-dot {
      width: 22px;
      height: 22px;
      border-radius: 999px;
      background: rgba(63, 191, 143, .14);
      color: #9bf1c8;
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      margin-top: 3px;
      font-size: 13px;
      font-weight: 900;
    }

    .check-item p {
      font-size: 14px;
      margin-top: 2px;
    }

    .spec-panel {
      padding: 8px;
      overflow: hidden;
    }

    .spec-row {
      display: grid;
      grid-template-columns: 1fr 1fr auto;
      gap: 14px;
      padding: 17px 18px;
      align-items: center;
      border-bottom: 1px solid rgba(216, 183, 106, .1);
    }

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

    .spec-row span {
      color: var(--weak);
      font-size: 14px;
    }

    .reviews {
      background:
        linear-gradient(180deg, rgba(33, 24, 39, .42), rgba(7, 6, 9, 0));
    }

    .review-wall {
      columns: 3 280px;
      column-gap: 18px;
    }

    .review-card {
      display: inline-block;
      width: 100%;
      padding: 20px;
      margin: 0 0 18px;
      break-inside: avoid;
      background:
        linear-gradient(150deg, rgba(216, 183, 106, .06), transparent 48%),
        var(--panel);
      transition: transform .2s ease, border-color .2s ease;
    }

    .review-card:hover {
      transform: translateY(-2px);
      border-color: rgba(216, 183, 106, .45);
    }

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

    .review-id {
      font-weight: 850;
      color: var(--text);
    }

    .stars {
      color: var(--gold-2);
      font-size: 13px;
      white-space: nowrap;
    }

    .review-card p {
      font-size: 14px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 22px;
    }

    .news-box {
      padding: 8px;
    }

    .news-link {
      display: grid;
      grid-template-columns: 96px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 17px;
      border-radius: 16px;
      transition: background .2s ease, transform .2s ease;
    }

    .news-link:hover {
      background: rgba(216, 183, 106, .08);
      transform: translateX(2px);
    }

    .news-date {
      color: var(--gold-2);
      font-weight: 850;
      font-size: 14px;
    }

    .news-link p {
      font-size: 14px;
      margin-top: 3px;
    }

    .recommend {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(155deg, #1b1421, #100d14);
      border: 1px solid var(--line);
    }

    .recommend-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .recommend-list a {
      padding: 12px 0;
      color: var(--muted);
      border-bottom: 1px solid rgba(216, 183, 106, .1);
      transition: color .2s ease;
    }

    .recommend-list a:hover {
      color: var(--gold-2);
    }

    .steps {
      background: #0b0a0e;
      border-block: 1px solid rgba(216, 183, 106, .08);
    }

    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .step-card {
      padding: 22px;
      background: #121016;
      position: relative;
    }

    .step-card::before {
      content: attr(data-step);
      display: inline-grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: rgba(216, 183, 106, .12);
      color: var(--gold-2);
      border: 1px solid rgba(216, 183, 106, .2);
      font-weight: 900;
      margin-bottom: 18px;
    }

    .step-card p {
      font-size: 14px;
      margin-top: 8px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 22px;
      align-items: start;
    }

    .faq-aside {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: linear-gradient(155deg, rgba(216, 183, 106, .1), rgba(139, 75, 216, .08));
      border: 1px solid var(--line);
    }

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

    .faq-item {
      overflow: hidden;
      background: #121016;
    }

    .faq-question {
      width: 100%;
      min-height: 62px;
      padding: 0 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      text-align: left;
      font-weight: 850;
    }

    .faq-answer {
      padding: 0 18px 18px;
      color: var(--muted);
      font-size: 14px;
      border-left: 3px solid var(--gold);
      margin-left: 18px;
      margin-bottom: 18px;
    }

    .download {
      padding-bottom: 96px;
    }

    .lead-panel {
      padding: 36px;
      background:
        linear-gradient(135deg, rgba(216, 183, 106, .13), transparent 32%),
        linear-gradient(160deg, #1a1320, #0d0b10);
    }

    .lead-grid {
      display: grid;
      grid-template-columns: 1fr 420px;
      gap: 28px;
      align-items: center;
    }

    .download-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 22px 0 16px;
    }

    .safe-note {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 13px 14px;
      border-radius: 16px;
      background: rgba(217, 154, 67, .1);
      border: 1px solid rgba(217, 154, 67, .25);
      color: #f0d2a0;
      font-size: 14px;
      max-width: 740px;
    }

    .version-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .lead-form {
      border-radius: 22px;
      background: #0c0a0f;
      border: 1px solid rgba(216, 183, 106, .24);
      padding: 20px;
    }

    .form-row {
      display: grid;
      gap: 8px;
      margin-bottom: 14px;
    }

    .form-row label {
      color: var(--text);
      font-size: 14px;
      font-weight: 800;
    }

    .form-row input, .form-row select {
      height: 48px;
      border-radius: 15px;
      padding: 0 14px;
    }

    .form-hint {
      font-size: 13px;
      color: var(--weak);
      margin-top: 10px;
    }

    .site-footer {
      background: #050407;
      border-top: 1px solid var(--line);
      padding: 42px 0 26px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand p {
      margin-top: 14px;
      max-width: 520px;
      font-size: 14px;
    }

    .footer-col h3 {
      font-size: 16px;
      color: var(--gold-2);
      margin-bottom: 12px;
    }

    .footer-col a {
      display: block;
      color: var(--muted);
      padding: 6px 0;
      font-size: 14px;
      transition: color .2s ease;
    }

    .footer-col a:hover {
      color: var(--gold-2);
    }

    .copyright {
      margin-top: 30px;
      padding-top: 18px;
      border-top: 1px solid rgba(216, 183, 106, .12);
      color: var(--weak);
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    @media (max-width: 1024px) {
      .nav-wrap {
        grid-template-columns: 1fr auto;
        gap: 14px;
        padding: 14px 0;
      }

      .desktop-search, .nav-links {
        display: none;
      }

      .mobile-actions {
        display: flex;
      }

      .mobile-pills {
        display: flex;
      }

      .mobile-search-open .desktop-search {
        display: grid;
        grid-column: 1 / -1;
      }

      .hero-stage, .directory-grid, .value-grid, .screen-layout, .spec-layout, .news-layout, .faq-grid, .lead-grid {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
      }

      .hero-banner {
        min-height: 520px;
      }

      .support-panel {
        max-width: none;
      }

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

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

      section {
        padding: 56px 0;
      }

      .hero {
        padding-top: 30px;
      }

      .hero-banner {
        padding: 28px;
        min-height: auto;
      }

      .hero-search {
        grid-template-columns: 24px 1fr;
        border-radius: 18px;
      }

      .hero-search .btn {
        grid-column: 1 / -1;
        width: 100%;
      }

      .hero-bottom, .benefit-grid, .step-grid {
        grid-template-columns: 1fr;
      }

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

      .status {
        width: fit-content;
      }

      .mock-row {
        grid-template-columns: 42px 1fr;
      }

      .mock-btn {
        grid-column: 1 / -1;
      }

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

    @media (max-width: 520px) {
      .logo-text {
        max-width: 180px;
        font-size: 14px;
      }

      h1 {
        font-size: 32px;
      }

      .hero-banner, .lead-panel {
        padding: 22px;
        border-radius: 20px;
      }

      .btn, .search-submit {
        width: 100%;
      }

      .hero-actions, .download-buttons {
        flex-direction: column;
      }

      .progress-ring {
        width: 178px;
        height: 178px;
      }

      .progress-ring::before {
        width: 132px;
        height: 132px;
      }

      .progress-text strong {
        font-size: 34px;
      }

      .review-wall {
        columns: 1;
      }
    }

/* roulang page: category1 */
:root{
      --ink:#0b0a0e;
      --panel:#141117;
      --panel-2:#1b1520;
      --panel-3:#241b29;
      --gold:#e4b878;
      --gold-light:#f1d39b;
      --wine:#673246;
      --green:#547c68;
      --amber:#a66d3f;
      --text:#f5efe7;
      --muted:#b7aeb8;
      --quiet:#827985;
      --line:rgba(228,184,120,.25);
      --line-soft:rgba(255,255,255,.1);
      --radius:18px;
      --shadow:0 18px 45px rgba(0,0,0,.28);
      --container:1200px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--ink);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;font-size:15px}
    body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:42px 42px}
    a{color:inherit;text-decoration:none}
    button,input,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(11,10,14,.96);border-bottom:1px solid var(--line);box-shadow:0 8px 25px rgba(0,0,0,.22)}
    .nav-wrap{min-height:78px;display:flex;align-items:center;gap:26px}
    .logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800}
    .logo-mark{display:grid;place-items:center;width:35px;height:35px;border:1px solid var(--gold);border-radius:11px;color:var(--gold-light);font-size:13px;box-shadow:inset 0 0 0 3px rgba(228,184,120,.08)}
    .logo-text{font-size:16px;letter-spacing:0;color:var(--text)}
    .nav-search{display:flex;align-items:center;flex:1;max-width:520px;height:50px;padding:0 7px 0 17px;border:1px solid var(--line-soft);border-radius:999px;background:var(--panel);color:var(--muted);transition:.2s}
    .nav-search:focus-within{border-color:var(--gold);background:var(--panel-2);box-shadow:0 0 0 4px rgba(228,184,120,.08)}
    .nav-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--text);padding:0 12px}
    .nav-search input::placeholder{color:var(--quiet)}
    .search-submit{height:38px;padding:0 18px;border:0;border-radius:999px;background:var(--gold);color:#171016;font-weight:800;transition:.2s}
    .search-submit:hover{background:var(--gold-light);transform:translateY(-1px)}
    .nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
    .nav-link{position:relative;padding:9px 12px;color:var(--muted);font-weight:650}
    .nav-link:hover,.nav-link.active{color:var(--gold-light)}
    .nav-link.active::after{content:"";position:absolute;bottom:1px;left:12px;right:12px;height:1px;background:var(--gold)}
    .quick-download{padding:11px 17px;border:1px solid var(--gold);border-radius:13px;color:var(--gold-light);font-weight:750;transition:.2s}
    .quick-download:hover{background:var(--gold);color:#171016;transform:translateY(-1px)}
    .mobile-actions,.mobile-pills{display:none}
    .page-intro{padding:74px 0 44px;border-bottom:1px solid var(--line-soft)}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--quiet);font-size:13px;margin-bottom:22px}
    .breadcrumb a:hover{color:var(--gold)}
    .intro-grid{display:grid;grid-template-columns:1fr 340px;gap:50px;align-items:end}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:13px;font-weight:750;letter-spacing:1px}
    .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold)}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:720px;margin:12px 0 17px;font-size:clamp(36px,5vw,56px);line-height:1.15;letter-spacing:0;font-weight:850}
    .intro-copy{max-width:680px;color:var(--muted);font-size:17px;line-height:1.85}
    .stats{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden}
    .stat{padding:21px;border-bottom:1px solid var(--line-soft)}
    .stat:nth-child(odd){border-right:1px solid var(--line-soft)}
    .stat:nth-last-child(-n+2){border-bottom:0}
    .stat strong{display:block;color:var(--gold-light);font-size:25px;line-height:1.2}
    .stat span{display:block;margin-top:4px;color:var(--quiet);font-size:13px}
    .section{padding:68px 0}
    .section-heading{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:24px}
    h2{margin-bottom:7px;font-size:31px;line-height:1.25}
    .section-heading p{margin-bottom:0;color:var(--muted)}
    .filter-bar{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:10px;padding:13px;border:1px solid var(--line);background:var(--panel);border-radius:17px;margin-bottom:22px}
    .filter-control{height:45px;padding:0 13px;border:1px solid var(--line-soft);border-radius:11px;background:var(--panel-2);color:var(--muted);outline:0}
    .filter-control:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(228,184,120,.1)}
    .result-list{display:grid;gap:13px}
    .result-item{display:grid;grid-template-columns:55px minmax(0,1fr) 190px 120px;align-items:center;gap:22px;padding:21px 23px;border:1px solid var(--line-soft);border-radius:16px;background:linear-gradient(110deg,var(--panel),#17121a);transition:.22s}
    .result-item:hover{border-color:var(--gold);background:var(--panel-2);transform:translateY(-2px);box-shadow:var(--shadow)}
    .result-number{color:var(--gold);font-size:21px;font-weight:800}
    .result-item h3{font-size:18px;margin-bottom:5px}
    .result-item p{margin-bottom:9px;color:var(--muted);font-size:14px;line-height:1.65}
    .tags{display:flex;flex-wrap:wrap;gap:7px}
    .tag,.status{display:inline-flex;align-items:center;white-space:nowrap;border-radius:999px;padding:3px 9px;font-size:12px}
    .tag{border:1px solid var(--line);color:var(--gold-light);background:rgba(103,50,70,.18)}
    .status{justify-content:center;border:1px solid rgba(84,124,104,.55);color:#a8d2bb;background:rgba(84,124,104,.14)}
    .status.attention{border-color:rgba(166,109,63,.6);color:#e5bd91;background:rgba(166,109,63,.13)}
    .result-meta{color:var(--quiet);font-size:13px;line-height:1.8}
    .item-action{justify-self:end;padding:9px 13px;border:1px solid var(--line);border-radius:11px;color:var(--gold-light);font-weight:700;transition:.2s}
    .item-action:hover{background:var(--gold);color:#171016}
    .notice{display:flex;gap:13px;align-items:flex-start;padding:18px 20px;border-left:3px solid var(--gold);background:var(--panel);color:var(--muted);border-radius:0 13px 13px 0}
    .notice strong{color:var(--text);display:block;margin-bottom:2px}
    .split-section{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start}
    .checklist{display:grid;gap:10px;margin-top:20px}
    .check{display:flex;gap:12px;padding:14px 15px;border:1px solid var(--line-soft);background:var(--panel);border-radius:12px;color:var(--muted)}
    .check b{color:var(--gold)}
    .spec-table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:var(--panel);border-radius:17px;overflow:hidden}
    .spec-table th,.spec-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
    .spec-table th{color:var(--gold-light);font-size:13px;font-weight:750;background:rgba(103,50,70,.15)}
    .spec-table td{color:var(--muted)}
    .spec-table tr:last-child td{border-bottom:0}
    .faq-list{display:grid;gap:10px;max-width:900px}
    .faq-item{border:1px solid var(--line-soft);background:var(--panel);border-radius:14px;overflow:hidden}
    .faq-item summary{padding:17px 20px;color:var(--text);font-weight:700;cursor:pointer;list-style:none}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"＋";float:right;color:var(--gold);font-size:20px;line-height:1}
    .faq-item[open] summary{border-bottom:1px solid var(--line);color:var(--gold-light)}
    .faq-item[open] summary::after{content:"−"}
    .faq-answer{padding:15px 20px 18px;color:var(--muted)}
    .cta{padding:54px 30px;text-align:center;border:1px solid var(--line);background:linear-gradient(135deg,#211622,#151016 70%);border-radius:24px;box-shadow:var(--shadow)}
    .cta h2{margin-bottom:10px}
    .cta p{color:var(--muted);max-width:650px;margin:0 auto 23px}
    .button-row{display:flex;justify-content:center;flex-wrap:wrap;gap:11px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:0 20px;border-radius:13px;font-weight:800;transition:.2s}
    .btn-primary{background:var(--gold);color:#171016;box-shadow:0 8px 22px rgba(228,184,120,.16)}
    .btn-primary:hover{background:var(--gold-light);transform:translateY(-2px)}
    .btn-secondary{border:1px solid var(--line);color:var(--gold-light);background:var(--panel)}
    .btn-secondary:hover{border-color:var(--gold);background:var(--panel-3);transform:translateY(-1px)}
    .site-footer{border-top:1px solid var(--line);padding:48px 0 22px;background:#09080b}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:45px}
    .footer-brand p{max-width:400px;color:var(--quiet);font-size:14px;margin:16px 0 0}
    .footer-col{display:grid;align-content:start;gap:8px}
    .footer-col h3{margin-bottom:7px;color:var(--gold-light);font-size:15px}
    .footer-col a{color:var(--quiet);font-size:14px}
    .footer-col a:hover{color:var(--gold)}
    .copyright{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid var(--line-soft);color:#69616d;font-size:12px}
    @media(max-width:1024px){
      .nav-wrap{gap:15px}.nav-links{gap:2px}.nav-link{padding-inline:8px}
      .intro-grid{grid-template-columns:1fr 290px}.result-item{grid-template-columns:45px minmax(0,1fr) 150px 100px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .nav-wrap{min-height:68px;flex-wrap:wrap}.desktop-search,.nav-links{display:none}.mobile-actions{display:flex;gap:7px;margin-left:auto}
      .icon-btn{display:grid;place-items:center;width:39px;height:39px;border:1px solid var(--line);border-radius:11px;background:var(--panel);color:var(--gold-light)}
      .mobile-pills{display:flex;gap:8px;overflow-x:auto;padding:0 14px 11px;scrollbar-width:none}.mobile-pills::-webkit-scrollbar{display:none}
      .pill{flex:0 0 auto;padding:5px 12px;border:1px solid var(--line-soft);border-radius:999px;color:var(--muted);font-size:13px}
      .pill:hover{border-color:var(--gold);color:var(--gold-light)}
      .page-intro{padding:51px 0 34px}.intro-grid,.split-section{grid-template-columns:1fr;gap:28px}
      h1{font-size:38px}.intro-copy{font-size:16px}.section{padding:52px 0}
      .filter-bar{grid-template-columns:1fr 1fr}.filter-control:first-child{grid-column:1/-1}
      .result-item{grid-template-columns:40px 1fr;gap:12px 15px}.result-meta{grid-column:2}.item-action{grid-column:2;justify-self:start}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .logo-text{font-size:14px}.logo-mark{width:32px;height:32px}
      h1{font-size:32px}.section-heading{display:block}.section-heading p{margin-top:8px}
      .filter-bar{grid-template-columns:1fr}.filter-control:first-child{grid-column:auto}
      .stats{grid-template-columns:1fr 1fr}.stat{padding:15px}.stat strong{font-size:21px}
      .spec-table th,.spec-table td{padding:13px 12px;font-size:13px}
      .cta{padding:38px 18px}.button-row .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}
    }