/* roulang page: index */
:root {
      --bg: #07111f;
      --bg-2: #0b1730;
      --panel: rgba(16, 31, 58, 0.72);
      --panel-strong: rgba(14, 29, 54, 0.92);
      --glass: rgba(255, 255, 255, 0.08);
      --text: #eef6ff;
      --muted: #a8b8d8;
      --soft: #d8e6ff;
      --primary: #45e5ff;
      --primary-2: #2a7fff;
      --accent: #9c6bff;
      --accent-2: #20f0a8;
      --warning: #ffd166;
      --danger: #ff6b9a;
      --line: rgba(156, 190, 255, 0.18);
      --line-strong: rgba(69, 229, 255, 0.34);
      --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
      --shadow-glow: 0 0 34px rgba(69, 229, 255, 0.22);
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --container: 1180px;
      --ease: 180ms ease;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      background: var(--bg);
    }

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      line-height: 1.72;
      min-height: 100vh;
      background:
        radial-gradient(circle at 10% 10%, rgba(42, 127, 255, 0.28), transparent 32%),
        radial-gradient(circle at 88% 12%, rgba(156, 107, 255, 0.22), transparent 28%),
        radial-gradient(circle at 50% 86%, rgba(32, 240, 168, 0.12), transparent 34%),
        linear-gradient(180deg, #07111f 0%, #081426 46%, #050b14 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -1;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), rgba(0,0,0,0.14));
    }

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

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

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    input,
    textarea {
      color: var(--text);
      background: rgba(255,255,255,0.08);
      border: 1px solid var(--line);
      border-radius: 16px;
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    input:focus,
    textarea:focus,
    .btn:focus,
    a:focus-visible,
    button:focus-visible {
      outline: 3px solid rgba(69, 229, 255, 0.28);
      outline-offset: 3px;
      border-color: var(--primary);
      box-shadow: 0 0 0 5px rgba(69, 229, 255, 0.08);
    }

    ::selection {
      background: rgba(69, 229, 255, 0.32);
      color: #ffffff;
    }

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

    .site-header {
      position: sticky;
      top: 18px;
      z-index: 50;
      margin-top: 18px;
      padding: 0 20px;
    }

    .floating-nav {
      max-width: var(--container);
      margin: 0 auto;
      display: flex;
      align-items: center;
      gap: 18px;
      min-height: 72px;
      padding: 12px 14px 12px 18px;
      border: 1px solid rgba(180, 210, 255, 0.18);
      border-radius: 999px;
      background: rgba(8, 17, 33, 0.72);
      backdrop-filter: blur(22px);
      box-shadow: 0 16px 54px rgba(0, 0, 0, 0.34);
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      min-width: max-content;
      font-weight: 850;
      letter-spacing: -0.02em;
      color: #fff;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      background:
        linear-gradient(135deg, rgba(69,229,255,0.95), rgba(156,107,255,0.88)),
        linear-gradient(180deg, rgba(255,255,255,0.18), transparent);
      box-shadow: 0 0 28px rgba(69,229,255,0.38);
      color: #06101e;
      font-weight: 900;
    }

    .brand-text {
      font-size: 1.02rem;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: auto;
    }

    .nav-link {
      padding: 10px 16px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 0.94rem;
      font-weight: 700;
    }

    .nav-link:hover,
    .nav-link.active {
      color: #ffffff;
      background: rgba(69, 229, 255, 0.10);
      box-shadow: inset 0 0 0 1px rgba(69, 229, 255, 0.18);
    }

    .nav-search {
      width: 230px;
      position: relative;
      display: flex;
      align-items: center;
      margin-left: 4px;
    }

    .nav-search i {
      position: absolute;
      left: 14px;
      color: rgba(216, 230, 255, 0.72);
      font-size: 0.9rem;
    }

    .nav-search input {
      width: 100%;
      height: 44px;
      padding: 0 14px 0 38px;
      border-radius: 999px;
      background: rgba(255,255,255,0.07);
      color: var(--text);
      font-size: 0.92rem;
    }

    .nav-search input::placeholder {
      color: rgba(216, 230, 255, 0.58);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 12px 18px;
      border-radius: 999px;
      font-size: 0.94rem;
      font-weight: 800;
      color: #06101e;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      box-shadow: 0 0 28px rgba(69, 229, 255, 0.28);
      white-space: nowrap;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      color: #06101e;
      box-shadow: 0 0 38px rgba(69, 229, 255, 0.44);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 999px;
      color: var(--text);
      background: rgba(255,255,255,0.08);
      border: 1px solid var(--line);
    }

    main {
      padding-top: 36px;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-weight: 800;
      font-size: 0.88rem;
      letter-spacing: 0.02em;
      margin-bottom: 12px;
    }

    .section-kicker::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 999px;
      background: var(--primary);
      box-shadow: 0 0 16px rgba(69,229,255,0.8);
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 26px;
      margin-bottom: 30px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(1.9rem, 3vw, 3rem);
      line-height: 1.18;
      letter-spacing: -0.055em;
      color: #fff;
    }

    .section-desc {
      max-width: 620px;
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 1.02rem;
    }

    .section-action {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--soft);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.06);
      border-radius: 999px;
      padding: 10px 15px;
      font-weight: 750;
      white-space: nowrap;
    }

    .section-action:hover {
      color: #fff;
      border-color: var(--line-strong);
      background: rgba(69,229,255,0.1);
      transform: translateY(-1px);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border-radius: 999px;
      padding: 13px 20px;
      font-weight: 850;
      line-height: 1;
      min-height: 48px;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }

    .btn-primary {
      color: #06101e;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      box-shadow: 0 0 34px rgba(69,229,255,0.28), 0 18px 42px rgba(0,0,0,0.22);
    }

    .btn-primary:hover {
      color: #06101e;
      transform: translateY(-3px);
      box-shadow: 0 0 48px rgba(69,229,255,0.45), 0 22px 46px rgba(0,0,0,0.3);
    }

    .btn-secondary {
      color: var(--text);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.08);
    }

    .btn-secondary:hover {
      color: #fff;
      border-color: var(--line-strong);
      background: rgba(69,229,255,0.10);
      transform: translateY(-2px);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid rgba(69, 229, 255, 0.26);
      border-radius: 999px;
      padding: 7px 12px;
      color: var(--soft);
      background: rgba(69, 229, 255, 0.08);
      font-size: 0.86rem;
      font-weight: 760;
    }

    .glass-card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, rgba(255,255,255,0.095), rgba(255,255,255,0.045));
      box-shadow: var(--shadow);
      backdrop-filter: blur(18px);
    }

    .hero {
      padding: 58px 0 88px;
    }

    .hero-shell {
      position: relative;
      overflow: hidden;
      border-radius: 36px;
      padding: clamp(26px, 4vw, 52px);
      background:
        linear-gradient(120deg, rgba(14, 29, 54, 0.96), rgba(9, 18, 35, 0.84)),
        radial-gradient(circle at 14% 16%, rgba(69,229,255,0.26), transparent 32%),
        radial-gradient(circle at 86% 30%, rgba(156,107,255,0.22), transparent 32%);
      border: 1px solid rgba(180,210,255,0.18);
      box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.1);
    }

    .hero-shell::after {
      content: "";
      position: absolute;
      width: 520px;
      height: 520px;
      right: -180px;
      top: -210px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(69,229,255,0.18), transparent 64%);
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
      gap: 34px;
      align-items: stretch;
      position: relative;
      z-index: 1;
    }

    .hero-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
      min-height: 520px;
    }

    .hero h1 {
      margin: 18px 0 18px;
      font-size: clamp(2.35rem, 5.2vw, 5.15rem);
      line-height: 1.03;
      letter-spacing: -0.075em;
      color: #ffffff;
      max-width: 900px;
    }

    .hero-lead {
      max-width: 720px;
      margin: 0 0 24px;
      color: var(--soft);
      font-size: clamp(1.02rem, 1.5vw, 1.18rem);
    }

    .pain-line {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      max-width: 720px;
      margin-bottom: 22px;
      padding: 14px 16px;
      border-radius: 18px;
      border: 1px solid rgba(255, 209, 102, 0.24);
      background: rgba(255, 209, 102, 0.08);
      color: #ffe7a3;
    }

    .pain-line i {
      margin-top: 5px;
      color: var(--warning);
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin: 2px 0 26px;
    }

    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 760px;
    }

    .point {
      padding: 16px;
      border-radius: 18px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.055);
    }

    .point strong {
      display: block;
      color: #fff;
      font-size: 1.42rem;
      line-height: 1.1;
      letter-spacing: -0.03em;
    }

    .point span {
      display: block;
      color: var(--muted);
      margin-top: 7px;
      font-size: 0.88rem;
    }

    .hero-stage {
      display: grid;
      grid-template-rows: auto 1fr auto;
      gap: 14px;
      min-height: 520px;
    }

    .demo-bar {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: rgba(0,0,0,0.22);
    }

    .demo-dots {
      display: flex;
      gap: 6px;
      margin: 0 2px;
    }

    .demo-dots span {
      width: 9px;
      height: 9px;
      border-radius: 99px;
      background: var(--primary);
      box-shadow: 0 0 16px rgba(69,229,255,0.55);
    }

    .demo-dots span:nth-child(2) {
      background: var(--accent);
    }

    .demo-dots span:nth-child(3) {
      background: var(--accent-2);
    }

    .demo-input {
      flex: 1;
      min-width: 0;
      height: 40px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 0 13px;
      color: var(--muted);
      border-radius: 999px;
      background: rgba(255,255,255,0.08);
      font-size: 0.92rem;
    }

    .demo-panel {
      display: grid;
      grid-template-columns: 1.04fr 0.96fr;
      gap: 14px;
    }

    .demo-main,
    .demo-side,
    .demo-foot {
      border-radius: 24px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.07);
      backdrop-filter: blur(18px);
    }

    .demo-main {
      padding: 20px;
      min-height: 342px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      position: relative;
    }

    .demo-main::before {
      content: "";
      position: absolute;
      inset: -80px -80px auto auto;
      width: 210px;
      height: 210px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(69,229,255,0.24), transparent 65%);
    }

    .status-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 16px;
      position: relative;
      z-index: 1;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 10px;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 800;
      color: #caffef;
      background: rgba(32,240,168,0.12);
      border: 1px solid rgba(32,240,168,0.28);
    }

    .status-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-2);
      box-shadow: 0 0 12px rgba(32,240,168,0.7);
    }

    .demo-title {
      margin: 0;
      position: relative;
      z-index: 1;
      color: #fff;
      font-size: 1.45rem;
      line-height: 1.25;
      letter-spacing: -0.035em;
    }

    .check-list {
      display: grid;
      gap: 10px;
      margin: 22px 0;
      position: relative;
      z-index: 1;
    }

    .check-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 11px 12px;
      border-radius: 16px;
      background: rgba(7,17,31,0.42);
      border: 1px solid rgba(180,210,255,0.12);
      color: var(--soft);
      font-size: 0.92rem;
    }

    .check-item i {
      color: var(--accent-2);
    }

    .progress-wrap {
      position: relative;
      z-index: 1;
    }

    .progress-label {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
      color: var(--muted);
      font-size: 0.86rem;
    }

    .progress-line {
      height: 10px;
      border-radius: 999px;
      background: rgba(255,255,255,0.08);
      overflow: hidden;
    }

    .progress-line span {
      display: block;
      width: 78%;
      height: 100%;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--primary), var(--accent-2));
      box-shadow: 0 0 18px rgba(69,229,255,0.55);
    }

    .demo-side {
      padding: 16px;
      display: grid;
      gap: 12px;
      align-content: start;
    }

    .mini-card {
      padding: 15px;
      border-radius: 18px;
      border: 1px solid rgba(180,210,255,0.12);
      background: rgba(7,17,31,0.38);
    }

    .mini-card strong {
      display: block;
      color: #fff;
      font-size: 1.35rem;
      line-height: 1;
    }

    .mini-card span {
      display: block;
      color: var(--muted);
      margin-top: 7px;
      font-size: 0.85rem;
    }

    .demo-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 15px 16px;
    }

    .demo-foot span {
      color: var(--muted);
      font-size: 0.92rem;
    }

    .demo-foot strong {
      color: #fff;
    }

    .directory-grid {
      display: grid;
      grid-template-columns: 1.05fr 1.35fr;
      gap: 22px;
      align-items: stretch;
    }

    .collection-cover {
      padding: 28px;
      min-height: 440px;
      overflow: hidden;
      position: relative;
    }

    .collection-cover::after {
      content: "";
      position: absolute;
      inset: auto -90px -110px auto;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(156,107,255,0.3), transparent 68%);
    }

    .cover-icon {
      width: 76px;
      height: 76px;
      border-radius: 24px;
      display: grid;
      place-items: center;
      color: #06101e;
      font-size: 2rem;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: var(--shadow-glow);
      margin-bottom: 22px;
    }

    .collection-cover h2,
    .collection-tree h3 {
      color: #fff;
      margin: 0;
      letter-spacing: -0.045em;
    }

    .collection-cover h2 {
      font-size: clamp(2rem, 3.2vw, 3.25rem);
      line-height: 1.1;
    }

    .collection-cover p {
      color: var(--muted);
      margin: 16px 0 24px;
    }

    .cover-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 26px;
    }

    .cover-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      position: relative;
      z-index: 1;
    }

    .cover-stat {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(180,210,255,0.12);
    }

    .cover-stat strong {
      display: block;
      color: #fff;
      font-size: 1.22rem;
    }

    .cover-stat span {
      color: var(--muted);
      font-size: 0.84rem;
    }

    .collection-tree {
      padding: 22px;
    }

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

    .tree-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 14px;
      padding: 15px;
      border-radius: 20px;
      border: 1px solid rgba(180,210,255,0.12);
      background: rgba(255,255,255,0.055);
      transition: transform var(--ease), border-color var(--ease), background var(--ease);
    }

    .tree-item:hover {
      transform: translateY(-2px);
      border-color: var(--line-strong);
      background: rgba(69,229,255,0.08);
    }

    .tree-icon {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(69,229,255,0.1);
      border: 1px solid rgba(69,229,255,0.18);
    }

    .tree-item strong {
      display: block;
      color: #fff;
      font-size: 1rem;
    }

    .tree-item span {
      color: var(--muted);
      font-size: 0.88rem;
    }

    .tree-count {
      padding: 7px 10px;
      border-radius: 999px;
      color: #dff8ff;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(180,210,255,0.12);
      font-weight: 800;
      font-size: 0.84rem;
    }

    .recommend-layout {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
    }

    .recommend-feature {
      padding: 28px;
      position: relative;
      overflow: hidden;
    }

    .recommend-feature::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 20% 15%, rgba(69,229,255,0.18), transparent 34%),
        radial-gradient(circle at 78% 74%, rgba(32,240,168,0.14), transparent 36%);
      pointer-events: none;
    }

    .recommend-feature > * {
      position: relative;
      z-index: 1;
    }

    .recommend-feature h2 {
      margin: 14px 0 12px;
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.8rem);
      line-height: 1.12;
      letter-spacing: -0.05em;
    }

    .recommend-feature p {
      color: var(--muted);
      margin-bottom: 22px;
    }

    .signal-list {
      display: grid;
      gap: 10px;
      margin-top: 18px;
    }

    .signal {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--soft);
      padding: 10px 0;
      border-bottom: 1px solid rgba(180,210,255,0.1);
    }

    .signal:last-child {
      border-bottom: 0;
    }

    .signal i {
      color: var(--accent-2);
    }

    .recommend-cards {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .rec-card {
      min-height: 186px;
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.065);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .rec-card:hover {
      transform: translateY(-4px);
      border-color: var(--line-strong);
      box-shadow: var(--shadow-glow);
    }

    .rec-card i {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #06101e;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      margin-bottom: 18px;
    }

    .rec-card h3 {
      margin: 0 0 8px;
      color: #fff;
      font-size: 1.12rem;
      letter-spacing: -0.02em;
    }

    .rec-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.28fr) 360px;
      gap: 22px;
    }

    .news-list {
      padding: 10px;
    }

    .news-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 15px;
      align-items: center;
      padding: 18px;
      border-radius: 20px;
      border: 1px solid transparent;
      transition: background var(--ease), border-color var(--ease), transform var(--ease);
    }

    .news-item + .news-item {
      border-top: 1px solid rgba(180,210,255,0.1);
      border-top-left-radius: 0;
      border-top-right-radius: 0;
    }

    .news-item:hover {
      background: rgba(69,229,255,0.07);
      border-color: rgba(69,229,255,0.16);
      transform: translateX(4px);
    }

    .news-date {
      width: 72px;
      height: 58px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(69,229,255,0.08);
      border: 1px solid rgba(69,229,255,0.16);
      font-weight: 850;
      line-height: 1.1;
      text-align: center;
    }

    .news-date small {
      display: block;
      color: var(--muted);
      font-weight: 700;
      font-size: 0.72rem;
    }

    .news-item h3 {
      margin: 0 0 5px;
      color: #fff;
      font-size: 1.05rem;
      letter-spacing: -0.015em;
    }

    .news-item p {
      margin: 0;
      color: var(--muted);
      font-size: 0.93rem;
    }

    .news-arrow {
      color: var(--muted);
    }

    .side-panel {
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.06);
    }

    .side-panel h3 {
      margin: 0 0 14px;
      color: #fff;
      font-size: 1.25rem;
    }

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

    .rank-list li {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 11px;
      align-items: start;
      padding: 12px;
      border-radius: 16px;
      background: rgba(7,17,31,0.34);
      border: 1px solid rgba(180,210,255,0.1);
    }

    .rank-no {
      width: 26px;
      height: 26px;
      border-radius: 9px;
      display: grid;
      place-items: center;
      color: #06101e;
      background: var(--primary);
      font-weight: 900;
      font-size: 0.82rem;
    }

    .rank-list strong {
      display: block;
      color: #fff;
      font-size: 0.94rem;
    }

    .rank-list span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 0.82rem;
    }

    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      counter-reset: step;
    }

    .step-card {
      position: relative;
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.06);
      overflow: hidden;
    }

    .step-card::before {
      counter-increment: step;
      content: "0" counter(step);
      display: inline-flex;
      width: 46px;
      height: 46px;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      color: #06101e;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      font-weight: 900;
      margin-bottom: 18px;
      box-shadow: var(--shadow-glow);
    }

    .step-card::after {
      content: "";
      position: absolute;
      right: -50px;
      top: -50px;
      width: 130px;
      height: 130px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(69,229,255,0.12), transparent 70%);
    }

    .step-card h3 {
      margin: 0 0 8px;
      color: #fff;
      font-size: 1.08rem;
    }

    .step-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .compare-card {
      padding: 22px;
      overflow: hidden;
    }

    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0 10px;
    }

    .compare-table th {
      padding: 0 16px 8px;
      color: var(--muted);
      font-size: 0.88rem;
      text-align: left;
      font-weight: 800;
    }

    .compare-table td {
      padding: 17px 16px;
      background: rgba(255,255,255,0.06);
      border-top: 1px solid rgba(180,210,255,0.12);
      border-bottom: 1px solid rgba(180,210,255,0.12);
      color: var(--soft);
      vertical-align: middle;
    }

    .compare-table td:first-child {
      border-left: 1px solid rgba(180,210,255,0.12);
      border-top-left-radius: 17px;
      border-bottom-left-radius: 17px;
      color: #fff;
      font-weight: 850;
    }

    .compare-table td:last-child {
      border-right: 1px solid rgba(180,210,255,0.12);
      border-top-right-radius: 17px;
      border-bottom-right-radius: 17px;
    }

    .compare-table .highlight {
      background: rgba(69,229,255,0.10);
      color: #e9fbff;
      border-color: rgba(69,229,255,0.22);
    }

    .compare-note {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 14px;
      padding: 16px;
      border-radius: 20px;
      background: rgba(32,240,168,0.08);
      border: 1px solid rgba(32,240,168,0.18);
      color: var(--soft);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 0.82fr 1.18fr;
      gap: 22px;
      align-items: start;
    }

    .faq-aside {
      padding: 26px;
      position: sticky;
      top: 112px;
    }

    .faq-aside h2 {
      margin: 12px 0 12px;
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.65rem);
      line-height: 1.12;
      letter-spacing: -0.05em;
    }

    .faq-aside p {
      color: var(--muted);
      margin: 0 0 22px;
    }

    .accordion {
      background: transparent;
    }

    .accordion-item {
      margin-bottom: 12px;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.06);
    }

    .accordion-title {
      border: 0 !important;
      color: #fff !important;
      background: transparent !important;
      font-weight: 850;
      font-size: 1rem;
      padding: 18px 50px 18px 18px;
      line-height: 1.4;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(69,229,255,0.08) !important;
      color: #fff !important;
    }

    .accordion-title::before {
      color: var(--primary);
      font-size: 1.4rem;
      margin-top: -0.75rem;
    }

    .accordion-content {
      border: 0 !important;
      background: rgba(7,17,31,0.22) !important;
      color: var(--muted);
      padding: 0 18px 20px;
      line-height: 1.75;
    }

    .share-section {
      padding-bottom: 94px;
    }

    .share-shell {
      display: grid;
      grid-template-columns: 1fr 420px;
      gap: 22px;
      align-items: stretch;
      padding: 26px;
      border-radius: 34px;
      background:
        radial-gradient(circle at 18% 18%, rgba(69,229,255,0.2), transparent 30%),
        radial-gradient(circle at 78% 70%, rgba(156,107,255,0.18), transparent 34%),
        linear-gradient(135deg, rgba(16,31,58,0.94), rgba(8,17,33,0.92));
      border: 1px solid rgba(180,210,255,0.18);
      box-shadow: var(--shadow);
    }

    .share-copy {
      padding: 20px;
    }

    .share-copy h2 {
      margin: 12px 0 12px;
      color: #fff;
      font-size: clamp(2rem, 4vw, 3.6rem);
      line-height: 1.08;
      letter-spacing: -0.06em;
    }

    .share-copy p {
      max-width: 680px;
      color: var(--muted);
      margin: 0 0 22px;
    }

    .share-tools {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
    }

    .share-tool {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 14px;
      border-radius: 999px;
      color: var(--soft);
      background: rgba(255,255,255,0.07);
      border: 1px solid var(--line);
      font-weight: 780;
    }

    .share-tool:hover {
      color: #fff;
      border-color: var(--line-strong);
      background: rgba(69,229,255,0.1);
      transform: translateY(-2px);
    }

    .lead-form {
      padding: 22px;
      border-radius: 26px;
      background: rgba(7,17,31,0.54);
      border: 1px solid rgba(180,210,255,0.14);
    }

    .lead-form h3 {
      margin: 0 0 8px;
      color: #fff;
      font-size: 1.22rem;
    }

    .lead-form p {
      color: var(--muted);
      margin: 0 0 16px;
      font-size: 0.92rem;
    }

    .form-field {
      display: grid;
      gap: 8px;
      margin-bottom: 12px;
    }

    .form-field label {
      color: var(--soft);
      font-weight: 760;
      font-size: 0.9rem;
    }

    .form-field input,
    .form-field textarea {
      width: 100%;
      padding: 12px 14px;
      min-height: 48px;
      resize: vertical;
    }

    .form-field textarea {
      min-height: 96px;
    }

    .form-hint {
      min-height: 22px;
      margin: 10px 0 0;
      color: var(--accent-2);
      font-size: 0.9rem;
    }

    .site-footer {
      border-top: 1px solid rgba(180,210,255,0.12);
      background: rgba(4,10,19,0.72);
      padding: 46px 0 34px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 0.9fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 900;
      font-size: 1.05rem;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 14px;
    }

    .footer-text {
      color: var(--muted);
      max-width: 690px;
      margin: 0;
    }

    .footer-links {
      display: flex;
      justify-content: flex-end;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-links a {
      padding: 9px 12px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid rgba(180,210,255,0.1);
      background: rgba(255,255,255,0.04);
      font-weight: 700;
      font-size: 0.9rem;
    }

    .footer-links a:hover {
      color: #fff;
      border-color: var(--line-strong);
      background: rgba(69,229,255,0.08);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin-top: 30px;
      padding-top: 22px;
      border-top: 1px solid rgba(180,210,255,0.1);
      color: rgba(216,230,255,0.62);
      font-size: 0.88rem;
    }

    .backtop {
      position: fixed;
      right: 22px;
      bottom: 22px;
      width: 48px;
      height: 48px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: #06101e;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      box-shadow: var(--shadow-glow);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      z-index: 40;
      transition: opacity var(--ease), visibility var(--ease), transform var(--ease);
    }

    .backtop.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    @media (max-width: 1024px) {
      .floating-nav {
        border-radius: 28px;
        flex-wrap: wrap;
      }

      .nav-search {
        width: 190px;
      }

      .hero-grid,
      .directory-grid,
      .recommend-layout,
      .news-layout,
      .faq-grid,
      .share-shell,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-copy,
      .hero-stage {
        min-height: auto;
      }

      .demo-panel {
        grid-template-columns: 1fr;
      }

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

      .faq-aside {
        position: static;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

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

      .site-header {
        top: 10px;
        padding: 0 12px;
      }

      .floating-nav {
        min-height: 66px;
        padding: 10px;
        border-radius: 24px;
      }

      .brand-text {
        max-width: 188px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .menu-toggle {
        display: inline-grid;
        place-items: center;
        margin-left: auto;
      }

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

      .floating-nav.is-open .nav-links,
      .floating-nav.is-open .nav-search,
      .floating-nav.is-open .nav-cta {
        display: flex;
      }

      .floating-nav.is-open .nav-links {
        width: 100%;
        order: 5;
        flex-direction: column;
        align-items: stretch;
        margin-left: 0;
      }

      .floating-nav.is-open .nav-link {
        width: 100%;
      }

      .floating-nav.is-open .nav-search {
        width: 100%;
        order: 6;
      }

      .floating-nav.is-open .nav-cta {
        width: 100%;
        order: 7;
      }

      main {
        padding-top: 16px;
      }

      section {
        padding: 58px 0;
      }

      .hero {
        padding-top: 32px;
      }

      .hero-shell {
        border-radius: 28px;
      }

      .hero h1 {
        letter-spacing: -0.055em;
      }

      .hero-points,
      .cover-stats,
      .recommend-cards {
        grid-template-columns: 1fr;
      }

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

      .news-item {
        grid-template-columns: 1fr;
      }

      .news-date {
        width: max-content;
        height: auto;
        padding: 9px 12px;
        display: inline-block;
      }

      .news-arrow {
        display: none;
      }

      .compare-card {
        overflow-x: auto;
      }

      .compare-table {
        min-width: 680px;
      }

      .share-shell {
        padding: 18px;
        border-radius: 28px;
      }

      .share-copy {
        padding: 8px;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .brand-text {
        max-width: 156px;
        font-size: 0.94rem;
      }

      .hero-shell {
        padding: 22px;
      }

      .hero-actions .btn,
      .share-tools .share-tool {
        width: 100%;
      }

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

      .tree-item {
        grid-template-columns: auto 1fr;
      }

      .tree-count {
        grid-column: 2;
        width: max-content;
      }

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

      .lead-form {
        padding: 18px;
      }

      .backtop {
        right: 14px;
        bottom: 14px;
      }
    }