/* roulang page: index */
:root {
      --bg: #0b1020;
      --bg-soft: #11182d;
      --surface: #ffffff;
      --surface-2: #f7f5ef;
      --text: #172033;
      --muted: #6d7483;
      --line: rgba(20, 31, 54, .12);
      --primary: #6f4cff;
      --primary-dark: #4d32d7;
      --accent: #ffb84c;
      --accent-2: #18c9a7;
      --danger: #ff6b6b;
      --radius-sm: 12px;
      --radius: 22px;
      --radius-lg: 34px;
      --shadow-sm: 0 10px 24px rgba(24, 32, 56, .08);
      --shadow: 0 22px 60px rgba(22, 28, 50, .14);
      --shadow-glow: 0 28px 90px rgba(111, 76, 255, .28);
      --container: 1180px;
      --nav-h: 76px;
      --ease: cubic-bezier(.2, .8, .2, 1);
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--text);
      background:
        radial-gradient(circle at 8% 5%, rgba(111, 76, 255, .12), transparent 32%),
        radial-gradient(circle at 90% 4%, rgba(255, 184, 76, .12), transparent 30%),
        linear-gradient(180deg, #fbfaf7 0%, #f3f0e9 44%, #fbfaf7 100%);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }

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

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

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

    button {
      cursor: pointer;
      border: 0;
    }

    input, textarea {
      outline: none;
    }

    ::selection {
      color: #fff;
      background: var(--primary);
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      backdrop-filter: blur(18px);
      background: rgba(251, 250, 247, .78);
      border-bottom: 1px solid rgba(23, 32, 51, .08);
    }

    .nav-shell {
      position: relative;
      min-height: var(--nav-h);
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      justify-self: center;
      min-width: max-content;
      font-weight: 900;
      letter-spacing: -.02em;
      color: var(--text);
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #1d213c 60%, var(--accent));
      box-shadow: 0 12px 28px rgba(111, 76, 255, .24);
      font-size: 15px;
      font-weight: 900;
    }

    .brand-text {
      font-size: 18px;
      white-space: nowrap;
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-left {
      justify-self: start;
    }

    .nav-right {
      justify-self: end;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 16px;
      border-radius: 999px;
      color: rgba(23, 32, 51, .72);
      font-weight: 800;
      transition: color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease);
    }

    .nav-link:hover {
      color: var(--primary);
      background: rgba(111, 76, 255, .08);
      transform: translateY(-1px);
    }

    .nav-link.active {
      color: #fff;
      background: var(--text);
      box-shadow: var(--shadow-sm);
    }

    .nav-search {
      display: flex;
      align-items: center;
      gap: 8px;
      height: 42px;
      padding: 0 14px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
      color: var(--muted);
      font-size: 14px;
      min-width: 190px;
    }

    .nav-search span {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 22px;
      border-radius: 999px;
      font-weight: 900;
      line-height: 1;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
      user-select: none;
      white-space: nowrap;
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .series-tab:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 3px solid rgba(111, 76, 255, .25);
      outline-offset: 3px;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      box-shadow: 0 16px 32px rgba(111, 76, 255, .28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 46px rgba(111, 76, 255, .35);
    }

    .btn-dark {
      color: #fff;
      background: #151b2f;
      box-shadow: 0 14px 26px rgba(21, 27, 47, .18);
    }

    .btn-dark:hover {
      transform: translateY(-2px);
      background: #0d1222;
    }

    .btn-ghost {
      color: var(--text);
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, .72);
    }

    .btn-ghost:hover {
      transform: translateY(-2px);
      border-color: rgba(111, 76, 255, .32);
      box-shadow: var(--shadow-sm);
    }

    .mobile-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 15px;
      background: #fff;
      color: var(--text);
      box-shadow: var(--shadow-sm);
    }

    .mobile-menu {
      display: none;
      padding: 0 0 18px;
    }

    .mobile-panel {
      display: grid;
      gap: 10px;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 22px;
      background: rgba(255, 255, 255, .88);
      box-shadow: var(--shadow-sm);
    }

    .hero {
      position: relative;
      padding: 34px 0 70px;
    }

    .hero-stage {
      position: relative;
      overflow: hidden;
      min-height: 610px;
      border-radius: 42px;
      color: #fff;
      background:
        linear-gradient(90deg, rgba(11, 16, 32, .88), rgba(11, 16, 32, .56) 48%, rgba(11, 16, 32, .18)),
        radial-gradient(circle at 72% 34%, rgba(255, 184, 76, .5), transparent 19%),
        radial-gradient(circle at 58% 76%, rgba(24, 201, 167, .38), transparent 20%),
        linear-gradient(135deg, #151b35 0%, #4231b2 48%, #faad58 100%);
      box-shadow: var(--shadow-glow);
      isolation: isolate;
    }

    .hero-stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(90deg, #000 0%, rgba(0,0,0,.76) 45%, transparent 92%);
      z-index: -1;
    }

    .hero-stage::after {
      content: "";
      position: absolute;
      right: -120px;
      top: 60px;
      width: 620px;
      height: 420px;
      border-radius: 52px;
      transform: rotate(-12deg);
      background:
        linear-gradient(135deg, rgba(255,255,255,.22), rgba(255,255,255,.04)),
        repeating-linear-gradient(90deg, rgba(255,255,255,.16) 0 1px, transparent 1px 28px);
      border: 1px solid rgba(255,255,255,.2);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 40px 80px rgba(0,0,0,.18);
      z-index: -1;
    }

    .series-bar {
      position: absolute;
      left: 30px;
      right: 30px;
      top: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 12px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 999px;
      background: rgba(255,255,255,.12);
      backdrop-filter: blur(18px);
    }

    .series-tabs {
      display: flex;
      align-items: center;
      gap: 8px;
      overflow-x: auto;
      scrollbar-width: none;
    }

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

    .series-tab {
      flex: 0 0 auto;
      padding: 10px 15px;
      border-radius: 999px;
      color: rgba(255,255,255,.82);
      font-size: 14px;
      font-weight: 800;
      transition: background .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
    }

    .series-tab:hover,
    .series-tab.active {
      color: #121827;
      background: #fff;
      transform: translateY(-1px);
    }

    .hero-content {
      width: min(680px, calc(100% - 60px));
      padding: 142px 0 50px 44px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #261a02;
      background: rgba(255, 184, 76, .92);
      font-size: 13px;
      font-weight: 900;
      box-shadow: 0 12px 26px rgba(255, 184, 76, .22);
    }

    .hero h1 {
      margin: 20px 0 18px;
      max-width: 760px;
      font-size: clamp(38px, 6vw, 76px);
      line-height: .98;
      letter-spacing: -.055em;
      font-weight: 950;
    }

    .hero-lead {
      max-width: 650px;
      color: rgba(255,255,255,.82);
      font-size: clamp(16px, 1.8vw, 20px);
      line-height: 1.85;
    }

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

    .hero-metrics {
      position: absolute;
      left: 44px;
      right: 44px;
      bottom: 34px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      max-width: 820px;
    }

    .metric-chip {
      padding: 18px;
      border: 1px solid rgba(255,255,255,.16);
      border-radius: 22px;
      background: rgba(255,255,255,.12);
      backdrop-filter: blur(18px);
    }

    .metric-chip strong {
      display: block;
      font-size: 26px;
      line-height: 1.1;
      font-weight: 950;
    }

    .metric-chip span {
      display: block;
      margin-top: 6px;
      color: rgba(255,255,255,.74);
      font-size: 13px;
      font-weight: 700;
    }

    main {
      position: relative;
    }

    .section {
      padding: 78px 0;
    }

    .section.compact {
      padding: 54px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 30px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 950;
      letter-spacing: .08em;
    }

    .section-title {
      margin: 0;
      color: var(--text);
      font-size: clamp(28px, 3.6vw, 46px);
      line-height: 1.12;
      letter-spacing: -.035em;
      font-weight: 950;
    }

    .section-desc {
      max-width: 590px;
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.85;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(111, 76, 255, .1);
      color: var(--primary);
      font-size: 13px;
      font-weight: 900;
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .82);
      box-shadow: var(--shadow-sm);
      transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(111, 76, 255, .22);
      box-shadow: var(--shadow);
    }

    .case-layout {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 24px;
      align-items: stretch;
    }

    .case-feature {
      padding: 34px;
      min-height: 430px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        radial-gradient(circle at 15% 15%, rgba(255, 184, 76, .18), transparent 32%),
        linear-gradient(135deg, #ffffff, #f8f4ea);
    }

    .case-feature h3,
    .case-card h3,
    .compare-panel h3,
    .info-card h3,
    .timeline-card h3,
    .contact-panel h3 {
      margin: 0;
      font-weight: 950;
      letter-spacing: -.02em;
      color: var(--text);
    }

    .case-feature h3 {
      font-size: 30px;
      line-height: 1.22;
      max-width: 520px;
    }

    .case-feature p,
    .case-card p,
    .compare-panel p,
    .info-card p,
    .timeline-card p {
      margin: 12px 0 0;
      color: var(--muted);
      line-height: 1.85;
    }

    .case-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 24px;
    }

    .case-tag {
      padding: 8px 12px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--line);
      color: rgba(23, 32, 51, .72);
      font-size: 13px;
      font-weight: 800;
    }

    .case-quote {
      margin-top: 28px;
      padding: 22px;
      border-radius: 22px;
      color: #fff;
      background: #141b32;
    }

    .case-quote q {
      quotes: none;
      display: block;
      font-size: 18px;
      font-weight: 850;
      line-height: 1.6;
    }

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

    .case-card {
      padding: 26px;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 18px;
      align-items: start;
    }

    .icon {
      width: 48px;
      height: 48px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 950;
      background: linear-gradient(135deg, var(--primary), var(--accent-2));
      box-shadow: 0 12px 28px rgba(24, 201, 167, .2);
    }

    .data-band {
      overflow: hidden;
      border-radius: 34px;
      color: #fff;
      background:
        radial-gradient(circle at 15% 20%, rgba(255,184,76,.28), transparent 30%),
        linear-gradient(135deg, #11172b, #211d56 54%, #4732b8);
      box-shadow: var(--shadow);
    }

    .data-grid {
      display: grid;
      grid-template-columns: 1.2fr repeat(4, 1fr);
      gap: 0;
      align-items: stretch;
    }

    .data-intro {
      padding: 34px;
      border-right: 1px solid rgba(255,255,255,.12);
    }

    .data-intro h2 {
      margin: 0;
      font-size: 34px;
      line-height: 1.14;
      font-weight: 950;
      letter-spacing: -.035em;
    }

    .data-intro p {
      margin: 12px 0 0;
      color: rgba(255,255,255,.72);
    }

    .data-item {
      padding: 34px 22px;
      border-right: 1px solid rgba(255,255,255,.12);
    }

    .data-item:last-child {
      border-right: 0;
    }

    .data-item strong {
      display: block;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1;
      letter-spacing: -.04em;
      font-weight: 950;
    }

    .data-item span {
      display: block;
      margin-top: 12px;
      color: rgba(255,255,255,.72);
      font-size: 14px;
      font-weight: 750;
    }

    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      align-items: stretch;
    }

    .compare-panel {
      position: relative;
      overflow: hidden;
      padding: 30px;
      min-height: 390px;
    }

    .compare-panel.before {
      background: linear-gradient(180deg, #fff, #f5f0ec);
    }

    .compare-panel.after {
      color: #fff;
      background:
        radial-gradient(circle at 82% 20%, rgba(255,184,76,.33), transparent 28%),
        linear-gradient(135deg, #1a1f36, #5f42e8);
    }

    .compare-panel.after h3,
    .compare-panel.after p {
      color: #fff;
    }

    .compare-panel.after p {
      color: rgba(255,255,255,.78);
    }

    .compare-list {
      display: grid;
      gap: 14px;
      margin: 26px 0 0;
      padding: 0;
      list-style: none;
    }

    .compare-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 15px;
      border-radius: 17px;
      background: rgba(255,255,255,.72);
      border: 1px solid var(--line);
      color: rgba(23, 32, 51, .78);
      font-weight: 750;
    }

    .after .compare-list li {
      color: rgba(255,255,255,.88);
      background: rgba(255,255,255,.12);
      border-color: rgba(255,255,255,.16);
    }

    .dot {
      width: 9px;
      height: 9px;
      margin-top: 8px;
      flex: 0 0 auto;
      border-radius: 50%;
      background: var(--danger);
    }

    .after .dot {
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(255,184,76,.15);
    }

    .promise-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .promise-item {
      padding: 24px;
      border-radius: 24px;
      background: rgba(255,255,255,.78);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
    }

    .promise-item b {
      display: block;
      margin-top: 14px;
      font-size: 17px;
      font-weight: 950;
    }

    .promise-item p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }

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

    .timeline::before {
      content: "";
      position: absolute;
      left: 7%;
      right: 7%;
      top: 36px;
      height: 2px;
      background: linear-gradient(90deg, rgba(111,76,255,.12), rgba(111,76,255,.7), rgba(255,184,76,.45));
    }

    .timeline-card {
      position: relative;
      padding: 84px 22px 24px;
      min-height: 245px;
    }

    .timeline-node {
      position: absolute;
      left: 22px;
      top: 20px;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--primary);
      box-shadow: 0 0 0 9px rgba(111,76,255,.12);
      font-size: 13px;
      font-weight: 950;
      z-index: 1;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.55fr .8fr;
      gap: 22px;
      align-items: start;
    }

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

    .news-link {
      display: grid;
      grid-template-columns: 116px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.78);
      transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
    }

    .news-link:hover {
      transform: translateX(4px);
      border-color: rgba(111,76,255,.28);
      box-shadow: var(--shadow-sm);
    }

    .news-date {
      color: var(--primary);
      font-weight: 950;
      font-size: 14px;
    }

    .news-link h3 {
      margin: 0;
      color: var(--text);
      font-size: 18px;
      font-weight: 950;
    }

    .news-link p {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .arrow {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(111,76,255,.1);
      font-weight: 950;
      transition: transform .22s var(--ease), background .22s var(--ease);
    }

    .news-link:hover .arrow {
      transform: translateX(3px);
      color: #fff;
      background: var(--primary);
    }

    .recommend-card {
      padding: 28px;
      position: sticky;
      top: 100px;
      background:
        radial-gradient(circle at 80% 10%, rgba(255,184,76,.22), transparent 30%),
        #fff;
    }

    .recommend-card ul {
      display: grid;
      gap: 13px;
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
    }

    .recommend-card li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding-bottom: 13px;
      border-bottom: 1px solid var(--line);
      color: rgba(23,32,51,.76);
      font-weight: 760;
    }

    .recommend-card li:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 24px;
      align-items: start;
    }

    .faq-aside {
      padding: 30px;
      border-radius: 30px;
      color: #fff;
      background:
        radial-gradient(circle at 20% 10%, rgba(255,184,76,.28), transparent 28%),
        linear-gradient(135deg, #12172b, #34268f);
      box-shadow: var(--shadow);
    }

    .faq-aside h2 {
      margin: 0;
      font-size: 34px;
      line-height: 1.15;
      letter-spacing: -.03em;
      font-weight: 950;
    }

    .faq-aside p {
      margin: 14px 0 0;
      color: rgba(255,255,255,.74);
    }

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

    .faq-item {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 22px;
      background: rgba(255,255,255,.84);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      color: var(--text);
      background: transparent;
      text-align: left;
      font-weight: 950;
    }

    .faq-question span:last-child {
      width: 30px;
      height: 30px;
      flex: 0 0 auto;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(111,76,255,.1);
      transition: transform .22s var(--ease);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--muted);
      line-height: 1.85;
    }

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

    .faq-item.open .faq-question span:last-child {
      transform: rotate(45deg);
    }

    .contact-wrap {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
      align-items: stretch;
    }

    .contact-panel {
      padding: 34px;
      border-radius: 34px;
      color: #fff;
      background:
        radial-gradient(circle at 18% 20%, rgba(24,201,167,.32), transparent 26%),
        radial-gradient(circle at 80% 0%, rgba(255,184,76,.24), transparent 24%),
        linear-gradient(135deg, #11172b, #33268c);
      box-shadow: var(--shadow);
    }

    .contact-panel h2 {
      margin: 0;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.12;
      letter-spacing: -.04em;
      font-weight: 950;
    }

    .contact-panel p {
      margin: 16px 0 0;
      color: rgba(255,255,255,.76);
    }

    .contact-points {
      display: grid;
      gap: 12px;
      margin-top: 28px;
    }

    .contact-points div {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255,255,255,.11);
      border: 1px solid rgba(255,255,255,.14);
      color: rgba(255,255,255,.86);
      font-weight: 780;
    }

    .lead-form {
      padding: 30px;
      border-radius: 34px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.9);
      box-shadow: var(--shadow);
    }

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

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

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

    .form-field label {
      color: rgba(23,32,51,.82);
      font-size: 14px;
      font-weight: 900;
    }

    .form-field input,
    .form-field textarea {
      width: 100%;
      border: 1px solid rgba(23,32,51,.14);
      border-radius: 16px;
      background: #fff;
      padding: 14px 15px;
      color: var(--text);
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }

    .form-field textarea {
      min-height: 112px;
      resize: vertical;
    }

    .form-field input:focus,
    .form-field textarea:focus {
      border-color: rgba(111,76,255,.55);
      box-shadow: 0 0 0 4px rgba(111,76,255,.1);
      background: #fff;
    }

    .privacy-note {
      margin: 16px 0 0;
      padding: 14px 16px;
      border-radius: 18px;
      color: var(--muted);
      background: rgba(111,76,255,.07);
      border: 1px solid rgba(111,76,255,.12);
      font-size: 14px;
      line-height: 1.7;
    }

    .form-status {
      min-height: 24px;
      margin-top: 12px;
      color: var(--accent-2);
      font-weight: 900;
    }

    .site-footer {
      margin-top: 30px;
      padding: 62px 0 104px;
      color: rgba(255,255,255,.76);
      background:
        radial-gradient(circle at 16% 0%, rgba(111,76,255,.24), transparent 30%),
        linear-gradient(180deg, #12172b, #080c17);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .7fr .7fr;
      gap: 30px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 950;
    }

    .footer-text {
      margin: 18px 0 0;
      max-width: 560px;
      line-height: 1.85;
    }

    .footer-title {
      margin: 0 0 14px;
      color: #fff;
      font-weight: 950;
    }

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

    .footer-links a {
      color: rgba(255,255,255,.72);
      transition: color .22s var(--ease), transform .22s var(--ease);
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(3px);
    }

    .copyright {
      margin-top: 36px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.58);
      font-size: 14px;
    }

    .fixed-cta {
      position: fixed;
      z-index: 90;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      width: min(760px, calc(100% - 28px));
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 12px 14px 12px 18px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 999px;
      color: #fff;
      background: rgba(15, 20, 38, .86);
      backdrop-filter: blur(18px);
      box-shadow: 0 22px 60px rgba(0,0,0,.26);
    }

    .fixed-cta strong {
      display: block;
      font-size: 15px;
      line-height: 1.2;
    }

    .fixed-cta span {
      display: block;
      margin-top: 2px;
      color: rgba(255,255,255,.65);
      font-size: 12px;
    }

    .fixed-cta .btn {
      min-height: 42px;
      padding-inline: 17px;
    }

    @media (max-width: 1024px) {
      :root {
        --nav-h: 70px;
      }

      .nav-search {
        display: none;
      }

      .hero-stage {
        min-height: 680px;
      }

      .hero-content {
        width: calc(100% - 46px);
        padding-left: 30px;
      }

      .hero-metrics {
        grid-template-columns: repeat(3, 1fr);
        left: 30px;
        right: 30px;
      }

      .case-layout,
      .news-layout,
      .faq-grid,
      .contact-wrap {
        grid-template-columns: 1fr;
      }

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

      .data-intro {
        grid-column: 1 / -1;
        border-right: 0;
        border-bottom: 1px solid rgba(255,255,255,.12);
      }

      .data-item:nth-child(3) {
        border-right: 0;
      }

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

      .timeline::before {
        display: none;
      }

      .recommend-card {
        position: static;
      }
    }

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

      .nav-shell {
        grid-template-columns: auto 1fr auto;
      }

      .brand {
        justify-self: start;
      }

      .brand-text {
        font-size: 16px;
      }

      .nav-left,
      .nav-right {
        display: none;
      }

      .mobile-toggle {
        display: grid;
        place-items: center;
        justify-self: end;
      }

      .mobile-menu.open {
        display: block;
      }

      .hero {
        padding-top: 20px;
      }

      .hero-stage {
        border-radius: 30px;
        min-height: 760px;
      }

      .hero-stage::after {
        right: -230px;
        top: 210px;
        opacity: .55;
      }

      .series-bar {
        left: 16px;
        right: 16px;
        top: 16px;
        border-radius: 24px;
        align-items: flex-start;
        flex-direction: column;
      }

      .hero-content {
        width: calc(100% - 32px);
        padding: 154px 0 0 20px;
      }

      .hero h1 {
        font-size: clamp(36px, 12vw, 54px);
      }

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

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

      .hero-metrics {
        grid-template-columns: 1fr;
        left: 20px;
        right: 20px;
        bottom: 20px;
      }

      .section {
        padding: 58px 0;
      }

      .section-head {
        display: block;
      }

      .case-feature,
      .contact-panel,
      .lead-form {
        padding: 24px;
        border-radius: 28px;
      }

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

      .compare-wrap,
      .promise-strip,
      .timeline {
        grid-template-columns: 1fr;
      }

      .news-link {
        grid-template-columns: 1fr auto;
        gap: 12px;
      }

      .news-date {
        grid-column: 1 / -1;
      }

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

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

      .fixed-cta {
        align-items: stretch;
        border-radius: 24px;
        flex-direction: column;
      }

      .fixed-cta .btn {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 14px;
      }

      .series-tab {
        padding: 9px 12px;
        font-size: 13px;
      }

      .hero-stage {
        min-height: 820px;
      }

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

      .metric-chip {
        padding: 15px;
      }

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

      .data-item,
      .data-intro {
        border-right: 0 !important;
        border-bottom: 1px solid rgba(255,255,255,.12);
      }

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

      .faq-question {
        padding: 18px;
      }

      .faq-answer {
        padding: 0 18px 18px;
      }
    }