/* roulang page: index */
:root {
      --bg: #f7f5ef;
      --surface: #ffffff;
      --surface-2: #f0eee7;
      --ink: #111827;
      --muted: #667085;
      --soft: #8a90a2;
      --line: rgba(17, 24, 39, .10);
      --line-strong: rgba(17, 24, 39, .18);
      --primary: #111827;
      --accent: #d79b3f;
      --accent-2: #8a5cf6;
      --success: #18a058;
      --danger: #d64545;
      --blue: #2563eb;
      --radius-xs: 10px;
      --radius-sm: 16px;
      --radius-md: 22px;
      --radius-lg: 32px;
      --radius-xl: 44px;
      --shadow-sm: 0 10px 28px rgba(17, 24, 39, .08);
      --shadow-md: 0 24px 70px rgba(17, 24, 39, .12);
      --shadow-lg: 0 34px 100px rgba(17, 24, 39, .18);
      --container: 1180px;
      --ease: cubic-bezier(.2, .8, .2, 1);
    }

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

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

    body {
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 6%, rgba(215, 155, 63, .18), transparent 34%),
        radial-gradient(circle at 92% 0%, rgba(138, 92, 246, .12), transparent 30%),
        linear-gradient(180deg, #faf8f2 0%, var(--bg) 46%, #ffffff 100%);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease);
    }

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

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

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

    input,
    textarea {
      width: 100%;
      border: 1px solid var(--line);
      color: var(--ink);
      background: rgba(255, 255, 255, .88);
      border-radius: 16px;
      outline: none;
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }

    input:focus,
    textarea:focus {
      border-color: rgba(215, 155, 63, .85);
      box-shadow: 0 0 0 5px rgba(215, 155, 63, .16);
      background: #fff;
    }

    ::selection {
      background: rgba(215, 155, 63, .28);
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      background: rgba(250, 248, 242, .82);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(17, 24, 39, .08);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: max-content;
      font-weight: 850;
      letter-spacing: -.04em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(145deg, rgba(17, 24, 39, 1), rgba(52, 64, 84, 1)),
        linear-gradient(135deg, var(--accent), #f1c56b);
      box-shadow: 0 12px 28px rgba(17, 24, 39, .18);
      position: relative;
      overflow: hidden;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 7px;
      border: 1px solid rgba(255, 255, 255, .26);
      border-radius: 10px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.05;
    }

    .brand-title {
      font-size: 18px;
    }

    .brand-sub {
      margin-top: 4px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
      letter-spacing: .08em;
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 14px;
      min-width: 0;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 6px;
      border: 1px solid rgba(17, 24, 39, .08);
      background: rgba(255, 255, 255, .58);
      border-radius: 999px;
      box-shadow: 0 10px 24px rgba(17, 24, 39, .04);
    }

    .nav-link {
      padding: 9px 16px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: var(--ink);
      background: rgba(17, 24, 39, .06);
    }

    .nav-link.active {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(17, 24, 39, .18);
    }

    .nav-search {
      width: 230px;
      position: relative;
    }

    .nav-search input {
      height: 42px;
      padding: 0 14px 0 40px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .62);
      font-size: 14px;
    }

    .nav-search::before {
      content: "⌕";
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-51%);
      color: var(--soft);
      font-size: 18px;
      z-index: 1;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 42px;
      padding: 0 18px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--line);
      color: var(--ink);
      font-weight: 800;
      font-size: 14px;
      box-shadow: 0 10px 24px rgba(17, 24, 39, .06);
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      border-color: rgba(215, 155, 63, .45);
      box-shadow: 0 14px 32px rgba(17, 24, 39, .10);
    }

    .mobile-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: #fff;
      align-items: center;
      justify-content: center;
      color: var(--ink);
    }

    .mobile-toggle span,
    .mobile-toggle span::before,
    .mobile-toggle span::after {
      content: "";
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 2px;
      background: currentColor;
      transition: transform .22s var(--ease), opacity .22s var(--ease);
      position: relative;
    }

    .mobile-toggle span::before {
      position: absolute;
      top: -6px;
    }

    .mobile-toggle span::after {
      position: absolute;
      top: 6px;
    }

    .site-header.menu-open .mobile-toggle span {
      transform: rotate(45deg);
    }

    .site-header.menu-open .mobile-toggle span::before {
      opacity: 0;
    }

    .site-header.menu-open .mobile-toggle span::after {
      transform: translateY(-6px) rotate(-90deg);
    }

    .breadcrumb-wrap {
      border-top: 1px solid rgba(17, 24, 39, .05);
      background: rgba(255, 255, 255, .34);
    }

    .breadcrumb {
      min-height: 42px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--muted);
      font-size: 13px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .breadcrumb::-webkit-scrollbar {
      display: none;
    }

    .breadcrumb a {
      color: var(--ink);
      font-weight: 700;
    }

    .breadcrumb .sep {
      color: rgba(102, 112, 133, .55);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 22px;
      border-radius: 999px;
      font-weight: 850;
      font-size: 15px;
      line-height: 1;
      border: 1px solid transparent;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
      user-select: none;
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 16px 34px rgba(17, 24, 39, .22);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 42px rgba(17, 24, 39, .28);
    }

    .btn-accent {
      color: #151515;
      background: linear-gradient(135deg, #f2c66e, var(--accent));
      box-shadow: 0 16px 34px rgba(215, 155, 63, .25);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 44px rgba(215, 155, 63, .34);
    }

    .btn-ghost {
      color: var(--ink);
      background: rgba(255, 255, 255, .74);
      border-color: var(--line);
    }

    .btn-ghost:hover {
      transform: translateY(-2px);
      background: #fff;
      border-color: rgba(17, 24, 39, .18);
      box-shadow: var(--shadow-sm);
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .brand:focus-visible,
    .nav-cta:focus-visible {
      outline: 4px solid rgba(215, 155, 63, .28);
      outline-offset: 3px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 7px 12px;
      border: 1px solid rgba(215, 155, 63, .28);
      border-radius: 999px;
      background: rgba(255, 255, 255, .68);
      color: #7a4b10;
      font-size: 13px;
      font-weight: 800;
    }

    .badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 0 5px rgba(24, 160, 88, .12);
    }

    .section {
      padding: 88px 0;
      position: relative;
    }

    .section-tight {
      padding: 64px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-kicker {
      color: var(--accent);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .12em;
      text-transform: uppercase;
      margin-bottom: 9px;
    }

    .section-title {
      max-width: 760px;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.12;
      letter-spacing: -.055em;
      font-weight: 900;
    }

    .section-desc {
      max-width: 520px;
      color: var(--muted);
      font-size: 16px;
    }

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

    .hero-shell {
      border: 1px solid rgba(17, 24, 39, .10);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(255, 255, 255, .64)),
        radial-gradient(circle at 70% 18%, rgba(215, 155, 63, .18), transparent 38%);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      position: relative;
    }

    .hero-shell::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(17, 24, 39, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 24, 39, .045) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(90deg, rgba(0,0,0,.7), transparent 75%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      min-height: 620px;
    }

    .hero-copy {
      padding: clamp(34px, 5vw, 64px);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    h1 {
      margin-top: 18px;
      max-width: 720px;
      font-size: clamp(42px, 6.4vw, 76px);
      line-height: .96;
      letter-spacing: -.075em;
      font-weight: 950;
    }

    .hero-lead {
      margin-top: 24px;
      max-width: 650px;
      color: #4b5563;
      font-size: clamp(16px, 2vw, 19px);
    }

    .hero-actions {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 13px;
    }

    .hero-points {
      margin-top: 32px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      max-width: 670px;
    }

    .point {
      padding: 14px 14px 13px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .66);
    }

    .point strong {
      display: block;
      font-size: 21px;
      letter-spacing: -.04em;
    }

    .point span {
      display: block;
      margin-top: 2px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 650;
    }

    .whitepaper-panel {
      padding: clamp(26px, 4vw, 44px);
      display: grid;
      place-items: center;
      background:
        linear-gradient(180deg, rgba(17, 24, 39, .96), rgba(17, 24, 39, .90)),
        radial-gradient(circle at 80% 10%, rgba(215, 155, 63, .35), transparent 38%);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .whitepaper-panel::after {
      content: "";
      position: absolute;
      width: 240px;
      height: 240px;
      right: -80px;
      bottom: -70px;
      border-radius: 50%;
      background: rgba(215, 155, 63, .22);
      filter: blur(2px);
    }

    .paper-stack {
      width: min(100%, 440px);
      position: relative;
      z-index: 1;
    }

    .paper-cover {
      min-height: 362px;
      border-radius: 32px;
      padding: 30px;
      background:
        linear-gradient(160deg, #fff 0%, #f5efe1 62%, #e7c681 100%);
      color: var(--ink);
      box-shadow: 0 34px 90px rgba(0, 0, 0, .28);
      transform: rotate(-1.5deg);
      position: relative;
      overflow: hidden;
      transition: transform .3s var(--ease);
    }

    .paper-cover:hover {
      transform: rotate(0deg) translateY(-4px);
    }

    .paper-cover::before {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(17, 24, 39, .11);
      border-radius: 24px;
      pointer-events: none;
    }

    .cover-mini {
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #6b4d18;
      font-size: 12px;
      font-weight: 900;
      letter-spacing: .12em;
    }

    .cover-title {
      margin-top: 50px;
      font-size: 42px;
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.06em;
    }

    .cover-desc {
      margin-top: 18px;
      color: #4d5566;
      font-size: 15px;
      max-width: 290px;
    }

    .cover-bars {
      position: absolute;
      left: 30px;
      right: 30px;
      bottom: 30px;
      display: grid;
      gap: 8px;
    }

    .cover-bars i {
      height: 9px;
      border-radius: 999px;
      background: rgba(17, 24, 39, .12);
    }

    .cover-bars i:nth-child(1) { width: 88%; }
    .cover-bars i:nth-child(2) { width: 68%; }
    .cover-bars i:nth-child(3) { width: 42%; }

    .catalog-card,
    .download-card {
      margin-top: 18px;
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 24px;
      background: rgba(255, 255, 255, .08);
      backdrop-filter: blur(14px);
      padding: 20px;
      box-shadow: 0 18px 50px rgba(0, 0, 0, .18);
    }

    .catalog-card h2,
    .download-card h2 {
      font-size: 18px;
      letter-spacing: -.02em;
    }

    .catalog-list {
      margin-top: 14px;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .catalog-list li {
      display: flex;
      gap: 10px;
      color: rgba(255, 255, 255, .82);
      font-size: 14px;
    }

    .catalog-list li::before {
      content: "";
      width: 7px;
      height: 7px;
      margin-top: 8px;
      flex: 0 0 auto;
      border-radius: 50%;
      background: var(--accent);
    }

    .mini-form {
      margin-top: 14px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
    }

    .mini-form input {
      height: 48px;
      border-radius: 999px;
      padding: 0 16px;
      border-color: rgba(255, 255, 255, .18);
      background: rgba(255, 255, 255, .12);
      color: #fff;
    }

    .mini-form input::placeholder {
      color: rgba(255, 255, 255, .58);
    }

    .form-note {
      margin-top: 10px;
      color: rgba(255, 255, 255, .62);
      font-size: 12px;
    }

    .form-status {
      min-height: 22px;
      margin-top: 10px;
      color: #ffe2a9;
      font-size: 13px;
      font-weight: 750;
    }

    .triple-grid {
      display: grid;
      grid-template-columns: .85fr 1.15fr 1fr;
      gap: 18px;
      align-items: stretch;
    }

    .value-card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .74);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform .26s var(--ease), box-shadow .26s var(--ease), border-color .26s var(--ease);
      min-height: 250px;
      position: relative;
      overflow: hidden;
    }

    .value-card:hover {
      transform: translateY(-6px);
      border-color: rgba(215, 155, 63, .36);
      box-shadow: var(--shadow-md);
    }

    .value-card.featured {
      background: linear-gradient(145deg, #111827, #243042);
      color: #fff;
    }

    .value-card.featured p,
    .value-card.featured .card-index {
      color: rgba(255, 255, 255, .68);
    }

    .card-index {
      display: inline-flex;
      width: 38px;
      height: 38px;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      background: rgba(215, 155, 63, .16);
      color: #8a570e;
      font-weight: 900;
      margin-bottom: 30px;
    }

    .value-card h3 {
      font-size: 25px;
      line-height: 1.16;
      letter-spacing: -.04em;
      margin-bottom: 12px;
    }

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

    .value-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 22px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 7px 10px;
      border-radius: 999px;
      border: 1px solid rgba(17, 24, 39, .09);
      background: rgba(255, 255, 255, .58);
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
    }

    .featured .tag {
      color: rgba(255, 255, 255, .78);
      background: rgba(255, 255, 255, .10);
      border-color: rgba(255, 255, 255, .12);
    }

    .scenario {
      background: #111827;
      color: #fff;
      overflow: hidden;
    }

    .scenario::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 12% 12%, rgba(215, 155, 63, .22), transparent 34%),
        radial-gradient(circle at 92% 80%, rgba(138, 92, 246, .18), transparent 30%);
      pointer-events: none;
    }

    .scenario .section-desc,
    .scenario .section-kicker {
      color: rgba(255, 255, 255, .68);
    }

    .scenario-layout {
      position: relative;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: center;
    }

    .scene-tabs {
      display: grid;
      gap: 12px;
    }

    .scene-tab {
      text-align: left;
      padding: 20px;
      border-radius: 22px;
      border: 1px solid rgba(255, 255, 255, .12);
      background: rgba(255, 255, 255, .06);
      color: rgba(255, 255, 255, .72);
      transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
    }

    .scene-tab:hover,
    .scene-tab.active {
      transform: translateX(6px);
      background: rgba(255, 255, 255, .12);
      border-color: rgba(215, 155, 63, .42);
      color: #fff;
    }

    .scene-tab strong {
      display: block;
      font-size: 18px;
      color: #fff;
      margin-bottom: 6px;
    }

    .terminal-card {
      border-radius: 32px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .14);
      box-shadow: 0 28px 80px rgba(0,0,0,.28);
      overflow: hidden;
    }

    .terminal-top {
      height: 54px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 22px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
      color: rgba(255,255,255,.68);
      font-size: 13px;
      font-weight: 800;
    }

    .dots {
      display: flex;
      gap: 8px;
    }

    .dots i {
      width: 11px;
      height: 11px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .26);
    }

    .terminal-body {
      padding: 28px;
      display: grid;
      gap: 16px;
    }

    .query-row {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 16px;
      border-radius: 18px;
      background: rgba(0, 0, 0, .20);
      border: 1px solid rgba(255, 255, 255, .08);
    }

    .query-row .status {
      flex: 0 0 auto;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 0 5px rgba(24, 160, 88, .14);
    }

    .query-row span {
      color: rgba(255, 255, 255, .83);
      font-size: 14px;
    }

    .result-box {
      margin-top: 4px;
      padding: 24px;
      border-radius: 24px;
      background: linear-gradient(145deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
      border: 1px solid rgba(255, 255, 255, .12);
    }

    .result-box h3 {
      font-size: 25px;
      letter-spacing: -.04em;
      margin-bottom: 12px;
    }

    .result-list {
      list-style: none;
      display: grid;
      gap: 10px;
      color: rgba(255,255,255,.75);
    }

    .result-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
    }

    .result-list li::before {
      content: "✓";
      color: #f2c66e;
      font-weight: 900;
    }

    .stage-grid {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 24px;
      align-items: center;
    }

    .screen-stage {
      position: relative;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 36px;
      background: linear-gradient(145deg, #ffffff, #f1eee4);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .screen-stage::before {
      content: "";
      position: absolute;
      width: 280px;
      height: 280px;
      right: -110px;
      top: -90px;
      border-radius: 50%;
      background: rgba(215, 155, 63, .20);
    }

    .screen-browser {
      position: relative;
      border-radius: 26px;
      background: #111827;
      overflow: hidden;
      box-shadow: 0 18px 48px rgba(17, 24, 39, .18);
    }

    .browser-bar {
      height: 48px;
      padding: 0 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255,255,255,.08);
      color: rgba(255,255,255,.62);
      font-size: 12px;
      font-weight: 800;
    }

    .browser-content {
      padding: 22px;
      display: grid;
      gap: 16px;
    }

    .filter-line {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .filter-chip {
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(255,255,255,.10);
      color: rgba(255,255,255,.76);
      font-size: 12px;
      font-weight: 750;
    }

    .movie-row {
      display: grid;
      grid-template-columns: 48px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.08);
    }

    .movie-icon {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(215,155,63,.95), rgba(138,92,246,.88));
    }

    .movie-row strong {
      display: block;
      color: #fff;
      font-size: 15px;
    }

    .movie-row span {
      color: rgba(255,255,255,.58);
      font-size: 12px;
    }

    .safe-label {
      padding: 6px 9px;
      border-radius: 999px;
      background: rgba(24,160,88,.14);
      color: #7ee2a8;
      font-size: 12px;
      font-weight: 850;
    }

    .stage-text {
      display: grid;
      gap: 16px;
    }

    .feature-list {
      list-style: none;
      display: grid;
      gap: 14px;
      margin-top: 6px;
    }

    .feature-list li {
      padding: 16px 18px;
      border-radius: 20px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.72);
      display: flex;
      gap: 12px;
      align-items: flex-start;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease);
    }

    .feature-list li:hover {
      transform: translateX(5px);
      box-shadow: var(--shadow-sm);
    }

    .feature-list li::before {
      content: "↳";
      color: var(--accent);
      font-weight: 950;
      font-size: 18px;
      line-height: 1.3;
    }

    .progress-wrap {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 24px;
      align-items: stretch;
    }

    .progress-card {
      border-radius: 34px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      padding: 30px;
    }

    .progress-number {
      font-size: 64px;
      line-height: 1;
      letter-spacing: -.08em;
      font-weight: 950;
    }

    .progress-bar {
      margin-top: 22px;
      height: 12px;
      border-radius: 999px;
      background: rgba(17, 24, 39, .08);
      overflow: hidden;
    }

    .progress-bar span {
      display: block;
      width: 78%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--accent), #f2c66e);
      animation: grow 1.2s var(--ease) both;
    }

    @keyframes grow {
      from { width: 20%; }
      to { width: 78%; }
    }

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

    .step-item {
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 16px;
      padding: 20px;
      border-radius: 24px;
      background: rgba(255, 255, 255, .76);
      border: 1px solid var(--line);
      transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
    }

    .step-item:hover {
      transform: translateY(-4px);
      border-color: rgba(215, 155, 63, .34);
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      background: #111827;
      color: #fff;
      font-weight: 950;
    }

    .step-item h3 {
      font-size: 19px;
      letter-spacing: -.03em;
      margin-bottom: 5px;
    }

    .step-item p {
      color: var(--muted);
      font-size: 14px;
    }

    .proof-strip {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 22px;
    }

    .quote-card {
      border-radius: 36px;
      padding: 34px;
      background: linear-gradient(145deg, #ffffff, #f5f2e9);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-md);
    }

    .quote-mark {
      width: 52px;
      height: 52px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      background: rgba(215,155,63,.18);
      color: #8a570e;
      font-size: 28px;
      font-weight: 950;
      margin-bottom: 24px;
    }

    .quote-card blockquote {
      font-size: clamp(22px, 3vw, 32px);
      line-height: 1.25;
      letter-spacing: -.045em;
      font-weight: 850;
    }

    .quote-card cite {
      display: block;
      margin-top: 18px;
      color: var(--muted);
      font-style: normal;
      font-weight: 700;
    }

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

    .metric {
      padding: 24px;
      min-height: 160px;
      border-radius: 28px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.76);
      transition: transform .22s var(--ease), box-shadow .22s var(--ease);
    }

    .metric:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-sm);
    }

    .metric strong {
      display: block;
      font-size: 38px;
      line-height: 1;
      letter-spacing: -.065em;
    }

    .metric span {
      display: block;
      margin-top: 12px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
    }

    .media-scroller {
      display: grid;
      grid-auto-flow: column;
      grid-auto-columns: minmax(280px, 360px);
      gap: 16px;
      overflow-x: auto;
      padding-bottom: 14px;
      scroll-snap-type: x mandatory;
    }

    .media-scroller::-webkit-scrollbar {
      height: 8px;
    }

    .media-scroller::-webkit-scrollbar-thumb {
      background: rgba(17,24,39,.18);
      border-radius: 999px;
    }

    .media-card {
      scroll-snap-align: start;
      border-radius: 30px;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      transition: transform .24s var(--ease), box-shadow .24s var(--ease);
    }

    .media-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .media-visual {
      height: 150px;
      background:
        linear-gradient(135deg, rgba(17,24,39,.92), rgba(17,24,39,.64)),
        radial-gradient(circle at 25% 25%, rgba(215,155,63,.55), transparent 38%);
      position: relative;
    }

    .media-visual::after {
      content: "";
      position: absolute;
      inset: 20px;
      border-radius: 22px;
      border: 1px solid rgba(255,255,255,.18);
    }

    .media-body {
      padding: 22px;
    }

    .media-type {
      display: inline-flex;
      padding: 6px 9px;
      border-radius: 999px;
      background: rgba(215,155,63,.13);
      color: #8a570e;
      font-size: 12px;
      font-weight: 850;
      margin-bottom: 12px;
    }

    .media-body h3 {
      font-size: 20px;
      letter-spacing: -.03em;
      margin-bottom: 8px;
    }

    .media-body p {
      color: var(--muted);
      font-size: 14px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 22px;
      align-items: start;
    }

    .news-list,
    .recommend-box {
      border: 1px solid var(--line);
      border-radius: 32px;
      background: rgba(255,255,255,.78);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .news-item {
      display: grid;
      grid-template-columns: 108px 1fr auto;
      gap: 18px;
      padding: 22px;
      border-bottom: 1px solid var(--line);
      align-items: center;
    }

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

    .news-date {
      color: var(--muted);
      font-size: 13px;
      font-weight: 850;
    }

    .news-item h3 {
      font-size: 18px;
      letter-spacing: -.025em;
      margin-bottom: 5px;
    }

    .news-item a:hover h3 {
      color: #8a570e;
    }

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

    .arrow-link {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--ink);
      font-weight: 900;
    }

    .news-item:hover .arrow-link {
      transform: translateX(4px);
      border-color: rgba(215,155,63,.46);
      background: rgba(215,155,63,.12);
    }

    .recommend-box {
      padding: 24px;
      position: sticky;
      top: 126px;
    }

    .recommend-box h3 {
      font-size: 22px;
      letter-spacing: -.04em;
      margin-bottom: 14px;
    }

    .recommend-links {
      list-style: none;
      display: grid;
      gap: 10px;
      margin-top: 16px;
    }

    .recommend-links a {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 14px;
      font-weight: 750;
    }

    .recommend-links li:last-child a {
      border-bottom: 0;
    }

    .recommend-links a:hover {
      color: var(--ink);
      transform: translateX(4px);
    }

    .plans {
      background: linear-gradient(180deg, #fff, #f7f5ef);
    }

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

    .plan-card {
      border-radius: 32px;
      border: 1px solid var(--line);
      background: #fff;
      padding: 28px;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
    }

    .plan-card:hover {
      transform: translateY(-7px);
      box-shadow: var(--shadow-md);
      border-color: rgba(215,155,63,.38);
    }

    .plan-card.popular {
      background: #111827;
      color: #fff;
      transform: translateY(-12px);
    }

    .plan-card.popular .plan-desc,
    .plan-card.popular .plan-features,
    .plan-card.popular .price small {
      color: rgba(255,255,255,.70);
    }

    .plan-name {
      font-size: 22px;
      letter-spacing: -.04em;
      font-weight: 900;
    }

    .plan-desc {
      margin-top: 8px;
      color: var(--muted);
      font-size: 14px;
      min-height: 46px;
    }

    .price {
      margin-top: 22px;
      font-size: 44px;
      line-height: 1;
      letter-spacing: -.06em;
      font-weight: 950;
    }

    .price small {
      font-size: 14px;
      color: var(--muted);
      letter-spacing: 0;
      font-weight: 750;
    }

    .plan-features {
      list-style: none;
      display: grid;
      gap: 10px;
      margin: 24px 0;
      color: var(--muted);
      font-size: 14px;
    }

    .plan-features li {
      display: flex;
      gap: 9px;
      align-items: flex-start;
    }

    .plan-features li::before {
      content: "✓";
      color: var(--success);
      font-weight: 950;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 370px 1fr;
      gap: 28px;
      align-items: start;
    }

    .faq-aside {
      padding: 30px;
      border-radius: 32px;
      background: #111827;
      color: #fff;
      position: sticky;
      top: 126px;
      box-shadow: var(--shadow-md);
    }

    .faq-aside p {
      margin-top: 12px;
      color: rgba(255,255,255,.68);
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 24px;
      background: rgba(255,255,255,.82);
      overflow: hidden;
      box-shadow: 0 10px 26px rgba(17,24,39,.05);
    }

    .faq-question {
      width: 100%;
      padding: 20px 22px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      text-align: left;
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.02em;
    }

    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(17,24,39,.06);
      transition: transform .22s var(--ease), background .22s var(--ease);
    }

    .faq-item.open .faq-question::after {
      content: "−";
      background: rgba(215,155,63,.16);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item.open .faq-answer {
      display: block;
      animation: fadeIn .24s var(--ease) both;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-5px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .lead-section {
      padding: 90px 0 104px;
    }

    .lead-panel {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      border-radius: 44px;
      background:
        linear-gradient(145deg, #111827, #202a3a),
        radial-gradient(circle at 80% 20%, rgba(215,155,63,.32), transparent 40%);
      color: #fff;
      padding: clamp(28px, 5vw, 54px);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .lead-panel::after {
      content: "";
      position: absolute;
      width: 320px;
      height: 320px;
      right: -120px;
      bottom: -140px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.04);
    }

    .lead-copy,
    .lead-form-card {
      position: relative;
      z-index: 1;
    }

    .lead-copy h2 {
      font-size: clamp(34px, 4.8vw, 58px);
      line-height: 1.04;
      letter-spacing: -.065em;
      font-weight: 950;
    }

    .lead-copy p {
      margin-top: 18px;
      color: rgba(255,255,255,.72);
      font-size: 16px;
      max-width: 470px;
    }

    .lead-checks {
      margin-top: 28px;
      display: grid;
      gap: 12px;
      list-style: none;
      color: rgba(255,255,255,.82);
      font-size: 14px;
      font-weight: 750;
    }

    .lead-checks li {
      display: flex;
      gap: 10px;
    }

    .lead-checks li::before {
      content: "✓";
      color: #f2c66e;
      font-weight: 950;
    }

    .lead-form-card {
      padding: 24px;
      border-radius: 30px;
      background: rgba(255,255,255,.10);
      border: 1px solid rgba(255,255,255,.14);
      backdrop-filter: blur(16px);
    }

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

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

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

    .field label {
      color: rgba(255,255,255,.76);
      font-size: 13px;
      font-weight: 850;
    }

    .lead-form-card input,
    .lead-form-card textarea {
      padding: 13px 15px;
      border-color: rgba(255,255,255,.18);
      background: rgba(255,255,255,.10);
      color: #fff;
    }

    .lead-form-card textarea {
      min-height: 98px;
      resize: vertical;
    }

    .lead-form-card input::placeholder,
    .lead-form-card textarea::placeholder {
      color: rgba(255,255,255,.45);
    }

    .lead-form-card .btn {
      margin-top: 16px;
      width: 100%;
    }

    .site-footer {
      background: #0c111d;
      color: rgba(255,255,255,.74);
      padding: 52px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr .8fr .8fr;
      gap: 28px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255,255,255,.10);
    }

    .footer-brand {
      color: #fff;
      font-size: 22px;
      letter-spacing: -.04em;
      font-weight: 950;
      margin-bottom: 12px;
    }

    .footer-text {
      max-width: 470px;
      color: rgba(255,255,255,.62);
      font-size: 14px;
    }

    .footer-title {
      color: #fff;
      font-weight: 900;
      margin-bottom: 12px;
    }

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

    .footer-links a {
      color: rgba(255,255,255,.62);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #f2c66e;
    }

    .footer-bottom {
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      color: rgba(255,255,255,.46);
      font-size: 13px;
    }

    .floating-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 70;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 12px 10px 18px;
      border-radius: 999px;
      background: rgba(17,24,39,.88);
      color: #fff;
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,.14);
      box-shadow: 0 20px 60px rgba(0,0,0,.22);
    }

    .floating-cta span {
      font-size: 14px;
      font-weight: 800;
      white-space: nowrap;
    }

    .floating-cta .btn {
      min-height: 38px;
      padding: 0 15px;
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      .nav-search {
        display: none;
      }

      .hero-grid,
      .scenario-layout,
      .stage-grid,
      .progress-wrap,
      .proof-strip,
      .lead-panel,
      .faq-layout {
        grid-template-columns: 1fr;
      }

      .whitepaper-panel {
        min-height: auto;
      }

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

      .value-card {
        min-height: auto;
      }

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

      .recommend-box,
      .faq-aside {
        position: static;
      }

      .plan-card.popular {
        transform: none;
      }

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

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

      .top-nav {
        height: 68px;
      }

      .brand-sub {
        display: none;
      }

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

      .nav-right {
        position: fixed;
        left: 14px;
        right: 14px;
        top: 78px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        border-radius: 26px;
        background: rgba(255,255,255,.94);
        border: 1px solid var(--line);
        box-shadow: var(--shadow-md);
      }

      .site-header.menu-open .nav-right {
        display: flex;
      }

      .nav-menu {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        border-radius: 20px;
      }

      .nav-cta {
        width: 100%;
      }

      .breadcrumb {
        min-height: 38px;
        font-size: 12px;
      }

      .hero {
        padding: 34px 0 62px;
      }

      .hero-shell {
        border-radius: 32px;
      }

      .hero-copy {
        padding: 28px;
      }

      h1 {
        font-size: clamp(38px, 12vw, 58px);
      }

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

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

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

      .section,
      .section-tight {
        padding: 62px 0;
      }

      .section-head {
        display: grid;
        gap: 12px;
      }

      .paper-cover {
        min-height: 320px;
      }

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

      .news-item {
        grid-template-columns: 1fr;
        gap: 10px;
      }

      .arrow-link {
        display: none;
      }

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

      .floating-cta {
        left: 14px;
        right: 14px;
        bottom: 12px;
        transform: none;
        justify-content: space-between;
        border-radius: 22px;
      }

      .floating-cta span {
        white-space: normal;
      }
    }

    @media (max-width: 520px) {
      .brand-title {
        font-size: 16px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
      }

      .hero-actions {
        display: grid;
      }

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

      .whitepaper-panel {
        padding: 20px;
      }

      .catalog-card,
      .download-card,
      .lead-form-card,
      .quote-card,
      .progress-card {
        border-radius: 24px;
        padding: 20px;
      }

      .terminal-body,
      .browser-content {
        padding: 18px;
      }

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

      .safe-label {
        grid-column: 2;
        width: fit-content;
      }

      .media-scroller {
        grid-auto-columns: minmax(250px, 84vw);
      }

      .lead-panel {
        border-radius: 30px;
      }

      .footer-bottom {
        padding-bottom: 70px;
      }
    }