/* roulang page: index */
:root {
      --color-primary: #6D5DF6;
      --color-primary-dark: #4636D9;
      --color-secondary: #14B8A6;
      --color-accent: #FFB020;
      --color-pink: #F45B9A;
      --color-bg: #F7F8FF;
      --color-bg-soft: #EEF2FF;
      --color-surface: #FFFFFF;
      --color-surface-2: #FBFCFF;
      --color-text: #14213D;
      --color-muted: #64748B;
      --color-light: #94A3B8;
      --color-border: rgba(20, 33, 61, .10);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --shadow-sm: 0 10px 30px rgba(20, 33, 61, .08);
      --shadow-md: 0 18px 55px rgba(58, 46, 180, .15);
      --shadow-lg: 0 28px 80px rgba(42, 35, 130, .22);
      --gradient-brand: linear-gradient(135deg, #6D5DF6 0%, #8758FF 42%, #14B8A6 100%);
      --gradient-warm: linear-gradient(135deg, #FFF6DF 0%, #FFE8F0 100%);
      --container: 1180px;
      --nav-height: 76px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.65;
      color: var(--color-text);
      background:
        radial-gradient(circle at top left, rgba(109, 93, 246, .13), transparent 32rem),
        radial-gradient(circle at 78% 10%, rgba(20, 184, 166, .12), transparent 28rem),
        var(--color-bg);
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

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

    a:hover,
    a:focus {
      color: var(--color-primary-dark);
    }

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

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

    button,
    .button {
      cursor: pointer;
    }

    ::selection {
      background: rgba(109, 93, 246, .22);
      color: var(--color-text);
    }

    .site-wrap {
      overflow: hidden;
      min-height: 100vh;
    }

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

    .section {
      padding: 76px 0;
      position: relative;
    }

    .section.compact {
      padding: 48px 0;
    }

    .section-header {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: end;
      margin-bottom: 28px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--color-primary-dark);
      background: rgba(109, 93, 246, .10);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .02em;
      margin-bottom: 12px;
    }

    .section-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--gradient-brand);
      box-shadow: 0 0 0 5px rgba(109, 93, 246, .12);
    }

    h1,
    h2,
    h3,
    h4,
    p {
      margin-top: 0;
    }

    h1 {
      font-size: clamp(32px, 5vw, 58px);
      line-height: 1.08;
      letter-spacing: -.045em;
      margin-bottom: 18px;
      color: #fff;
    }

    h2 {
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.16;
      letter-spacing: -.035em;
      margin-bottom: 12px;
    }

    h3 {
      font-size: 20px;
      line-height: 1.28;
      letter-spacing: -.02em;
      margin-bottom: 10px;
    }

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

    .lead {
      font-size: 18px;
      color: rgba(255,255,255,.84);
      max-width: 820px;
      margin-bottom: 24px;
    }

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

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 13px 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1;
      margin: 0;
      box-shadow: none;
      transition: var(--ease);
      text-decoration: none;
    }

    .button.primary {
      color: #fff;
      background: var(--gradient-brand);
      box-shadow: 0 14px 32px rgba(109, 93, 246, .30);
    }

    .button.primary:hover,
    .button.primary:focus {
      transform: translateY(-2px);
      box-shadow: 0 20px 42px rgba(109, 93, 246, .38);
      color: #fff;
    }

    .button.secondary {
      color: #fff;
      background: rgba(255,255,255,.13);
      border-color: rgba(255,255,255,.28);
      backdrop-filter: blur(12px);
    }

    .button.secondary:hover,
    .button.secondary:focus {
      background: rgba(255,255,255,.22);
      transform: translateY(-2px);
      color: #fff;
    }

    .button.ghost {
      color: var(--color-primary-dark);
      background: #fff;
      border-color: rgba(109, 93, 246, .16);
      box-shadow: var(--shadow-sm);
    }

    .button.ghost:hover,
    .button.ghost:focus {
      transform: translateY(-2px);
      border-color: rgba(109, 93, 246, .32);
      box-shadow: var(--shadow-md);
    }

    .button:focus,
    .nav-link:focus,
    .menu-toggle:focus,
    input:focus,
    textarea:focus,
    select:focus {
      outline: 3px solid rgba(20, 184, 166, .28);
      outline-offset: 3px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      width: fit-content;
      padding: 6px 11px;
      border-radius: 999px;
      background: rgba(20, 184, 166, .10);
      color: #0F766E;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .badge.hot {
      background: rgba(255, 176, 32, .16);
      color: #9A5B00;
    }

    .badge.purple {
      background: rgba(109, 93, 246, .12);
      color: var(--color-primary-dark);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(18px);
      background: rgba(247, 248, 255, .78);
      border-bottom: 1px solid rgba(20, 33, 61, .08);
    }

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

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

    .nav-right {
      justify-content: flex-end;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      font-weight: 950;
      color: var(--color-text);
      letter-spacing: -.025em;
      white-space: nowrap;
      padding: 8px 10px;
      border-radius: 999px;
    }

    .brand-mark {
      width: 36px;
      height: 36px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--gradient-brand);
      box-shadow: 0 12px 28px rgba(109, 93, 246, .34);
      font-size: 17px;
    }

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

    .nav-link {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 9px 14px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 800;
      color: var(--color-muted);
    }

    .nav-link:hover,
    .nav-link:focus,
    .nav-link.active {
      color: var(--color-primary-dark);
      background: rgba(109, 93, 246, .10);
    }

    .nav-action {
      min-height: 40px;
      padding: 10px 15px;
      border-radius: 999px;
      font-size: 14px;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--color-border);
      border-radius: 14px;
      background: #fff;
      color: var(--color-text);
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
    }

    .menu-toggle span {
      width: 18px;
      height: 2px;
      display: block;
      background: currentColor;
      position: relative;
      border-radius: 999px;
    }

    .menu-toggle span::before,
    .menu-toggle span::after {
      content: "";
      position: absolute;
      left: 0;
      width: 18px;
      height: 2px;
      background: currentColor;
      border-radius: 999px;
      transition: var(--ease);
    }

    .menu-toggle span::before {
      top: -6px;
    }

    .menu-toggle span::after {
      top: 6px;
    }

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

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

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

    .hero {
      padding: 34px 0 44px;
    }

    .hero-stage {
      border-radius: var(--radius-xl);
      padding: clamp(28px, 5vw, 54px);
      background:
        linear-gradient(115deg, rgba(10, 15, 35, .70), rgba(50, 41, 145, .86)),
        radial-gradient(circle at 86% 8%, rgba(20, 184, 166, .65), transparent 22rem),
        radial-gradient(circle at 18% 88%, rgba(255, 176, 32, .28), transparent 18rem),
        var(--gradient-brand);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .hero-stage::before {
      content: "";
      position: absolute;
      inset: -1px;
      background-image:
        linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: radial-gradient(circle at 64% 45%, #000 0%, transparent 66%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.14fr .86fr;
      gap: 30px;
      align-items: center;
    }

    .hero-kicker-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #fff;
      background: rgba(255,255,255,.13);
      border: 1px solid rgba(255,255,255,.20);
      font-size: 13px;
      font-weight: 800;
      backdrop-filter: blur(10px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin: 22px 0 22px;
    }

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

    .data-chip {
      padding: 13px 14px;
      border-radius: 18px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.20);
      backdrop-filter: blur(12px);
    }

    .data-chip strong {
      display: block;
      color: #fff;
      font-size: 20px;
      line-height: 1.15;
      letter-spacing: -.02em;
    }

    .data-chip span {
      color: rgba(255,255,255,.72);
      font-size: 13px;
      font-weight: 700;
    }

    .group-card {
      background: rgba(255,255,255,.94);
      border: 1px solid rgba(255,255,255,.55);
      border-radius: 30px;
      padding: 24px;
      box-shadow: 0 24px 70px rgba(14, 19, 46, .28);
    }

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

    .group-avatar {
      display: flex;
      align-items: center;
    }

    .avatar-dot {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      margin-left: -8px;
      border: 2px solid #fff;
      background: var(--gradient-brand);
    }

    .avatar-dot:first-child {
      margin-left: 0;
    }

    .group-number {
      font-size: 36px;
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.05em;
      color: var(--color-primary-dark);
    }

    .progress-wrap {
      margin: 15px 0 16px;
    }

    .progress-label {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .progress {
      height: 12px;
      border-radius: 999px;
      background: #E6E9F5;
      overflow: hidden;
      margin: 0;
    }

    .progress-meter {
      height: 100%;
      display: block;
      border-radius: inherit;
      background: var(--gradient-brand);
      box-shadow: 0 0 18px rgba(109, 93, 246, .38);
    }

    .mini-checks {
      display: grid;
      gap: 10px;
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
    }

    .mini-checks li {
      display: flex;
      gap: 9px;
      align-items: flex-start;
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 700;
    }

    .mini-checks li::before {
      content: "✓";
      width: 20px;
      height: 20px;
      flex: 0 0 20px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(20, 184, 166, .13);
      color: #0F766E;
      font-size: 12px;
      font-weight: 950;
      margin-top: 1px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 18px;
      align-items: stretch;
    }

    .feature-card,
    .spec-card,
    .story-card,
    .price-card,
    .faq-item,
    .track-card,
    .scenario-card {
      background: rgba(255,255,255,.88);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }

    .feature-card:hover,
    .spec-card:hover,
    .story-card:hover,
    .price-card:hover,
    .faq-item:hover,
    .track-card:hover,
    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(109, 93, 246, .22);
    }

    .feature-card {
      padding: 24px;
      min-height: 220px;
      position: relative;
      overflow: hidden;
    }

    .feature-card.big {
      grid-row: span 2;
      color: #fff;
      background:
        radial-gradient(circle at 82% 12%, rgba(255,255,255,.25), transparent 16rem),
        var(--gradient-brand);
      border-color: rgba(255,255,255,.35);
    }

    .feature-card.big p,
    .feature-card.big .feature-meta {
      color: rgba(255,255,255,.82);
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #fff;
      background: var(--gradient-brand);
      box-shadow: 0 12px 28px rgba(109, 93, 246, .23);
      margin-bottom: 18px;
      font-size: 20px;
    }

    .feature-card.big .feature-icon {
      background: rgba(255,255,255,.18);
      border: 1px solid rgba(255,255,255,.24);
      box-shadow: none;
    }

    .feature-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
    }

    .spec-layout {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 20px;
      align-items: stretch;
    }

    .spec-panel {
      border-radius: var(--radius-lg);
      padding: 26px;
      color: #fff;
      background:
        radial-gradient(circle at 85% 18%, rgba(255,176,32,.34), transparent 13rem),
        linear-gradient(145deg, #111936 0%, #4338CA 100%);
      box-shadow: var(--shadow-md);
    }

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

    .spec-list {
      display: grid;
      gap: 12px;
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
    }

    .spec-list li {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255,255,255,.14);
      color: rgba(255,255,255,.86);
      font-weight: 700;
    }

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

    .spec-list strong {
      color: #fff;
      white-space: nowrap;
    }

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

    .spec-card {
      padding: 20px;
    }

    .spec-card .num {
      display: flex;
      align-items: baseline;
      gap: 6px;
      color: var(--color-primary-dark);
      font-size: 28px;
      font-weight: 950;
      letter-spacing: -.04em;
      margin-bottom: 6px;
    }

    .spec-card .num small {
      font-size: 13px;
      color: var(--color-muted);
      letter-spacing: 0;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.38fr) minmax(280px, .62fr);
      gap: 20px;
      align-items: start;
    }

    .news-list {
      background: rgba(255,255,255,.90);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .news-item {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border-bottom: 1px solid var(--color-border);
    }

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

    .news-item:hover {
      background: rgba(109, 93, 246, .055);
    }

    .news-date {
      width: 58px;
      height: 58px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      text-align: center;
      color: var(--color-primary-dark);
      background: rgba(109, 93, 246, .10);
      font-weight: 950;
      line-height: 1.05;
      flex-shrink: 0;
    }

    .news-date span {
      display: block;
      font-size: 12px;
      color: var(--color-muted);
      font-weight: 800;
    }

    .news-title {
      display: block;
      font-size: 17px;
      font-weight: 900;
      color: var(--color-text);
      margin-bottom: 4px;
      line-height: 1.35;
    }

    .news-title:hover {
      color: var(--color-primary-dark);
    }

    .news-desc {
      margin: 0;
      font-size: 14px;
    }

    .news-arrow {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--color-primary-dark);
      background: rgba(109, 93, 246, .10);
      font-weight: 950;
    }

    .recommend-box {
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(109, 93, 246, .14);
      background: linear-gradient(180deg, #fff 0%, #F6F4FF 100%);
      box-shadow: var(--shadow-sm);
    }

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

    .rank-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 12px;
      border-radius: 16px;
      background: rgba(255,255,255,.78);
      border: 1px solid rgba(20,33,61,.07);
    }

    .rank-num {
      width: 24px;
      height: 24px;
      flex: 0 0 24px;
      display: grid;
      place-items: center;
      border-radius: 9px;
      color: #fff;
      background: var(--gradient-brand);
      font-size: 12px;
      font-weight: 950;
    }

    .track-shell {
      padding: 22px;
      border-radius: var(--radius-xl);
      background: #10172F;
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .track-shell::after {
      content: "";
      position: absolute;
      inset: auto -10% -50% 40%;
      height: 260px;
      background: radial-gradient(circle, rgba(20,184,166,.28), transparent 65%);
      pointer-events: none;
    }

    .track-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 20px;
      margin-bottom: 18px;
      position: relative;
      z-index: 1;
    }

    .track-head h2,
    .track-head p {
      color: #fff;
    }

    .track-head p {
      color: rgba(255,255,255,.70);
      margin-bottom: 0;
    }

    .poster-track {
      display: grid;
      grid-auto-flow: column;
      grid-auto-columns: minmax(190px, 1fr);
      gap: 14px;
      overflow-x: auto;
      padding: 4px 2px 14px;
      scroll-snap-type: x mandatory;
      position: relative;
      z-index: 1;
    }

    .poster-track::-webkit-scrollbar {
      height: 8px;
    }

    .poster-track::-webkit-scrollbar-thumb {
      background: rgba(255,255,255,.24);
      border-radius: 999px;
    }

    .track-card {
      min-height: 260px;
      scroll-snap-align: start;
      color: #fff;
      padding: 18px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.03)),
        radial-gradient(circle at 20% 10%, rgba(255,255,255,.28), transparent 9rem),
        linear-gradient(135deg, #6D5DF6, #14B8A6);
      border-color: rgba(255,255,255,.16);
      box-shadow: none;
      overflow: hidden;
    }

    .track-card:nth-child(2) {
      background: linear-gradient(135deg, #F45B9A, #6D5DF6);
    }

    .track-card:nth-child(3) {
      background: linear-gradient(135deg, #FFB020, #F45B9A);
    }

    .track-card:nth-child(4) {
      background: linear-gradient(135deg, #14B8A6, #2563EB);
    }

    .track-card:nth-child(5) {
      background: linear-gradient(135deg, #1F2937, #6D5DF6);
    }

    .track-card p {
      color: rgba(255,255,255,.78);
      margin-bottom: 0;
      font-size: 14px;
    }

    .track-cta {
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 6px;
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(255,255,255,.18);
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      border: 1px solid rgba(255,255,255,.20);
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .scenario-card {
      padding: 22px;
    }

    .scenario-card .icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      background: rgba(109, 93, 246, .10);
      color: var(--color-primary-dark);
      margin-bottom: 15px;
      font-size: 18px;
    }

    .timeline {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      top: 34px;
      left: 8%;
      right: 8%;
      height: 2px;
      background: linear-gradient(90deg, rgba(109,93,246,.18), rgba(20,184,166,.30));
    }

    .timeline-node {
      position: relative;
      z-index: 1;
      padding: 20px;
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.88);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .node-dot {
      width: 30px;
      height: 30px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--gradient-brand);
      font-weight: 950;
      box-shadow: 0 10px 24px rgba(109, 93, 246, .30);
      margin-bottom: 18px;
    }

    .trust-bar {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      padding: 16px;
      border-radius: var(--radius-xl);
      background: rgba(255,255,255,.86);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .trust-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 16px;
      border-radius: 22px;
      background: var(--color-surface-2);
      border: 1px solid rgba(20,33,61,.06);
    }

    .trust-icon {
      width: 40px;
      height: 40px;
      flex: 0 0 40px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: #fff;
      background: var(--gradient-brand);
      box-shadow: 0 10px 22px rgba(109, 93, 246, .20);
    }

    .trust-item strong {
      display: block;
      margin-bottom: 3px;
      font-weight: 950;
    }

    .trust-item span {
      display: block;
      color: var(--color-muted);
      font-size: 13px;
      line-height: 1.45;
    }

    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      align-items: stretch;
    }

    .price-card {
      padding: 24px;
      position: relative;
      overflow: hidden;
    }

    .price-card.featured {
      transform: translateY(-8px);
      border-color: rgba(109, 93, 246, .28);
      box-shadow: var(--shadow-md);
    }

    .price-card.featured::before {
      content: "推荐";
      position: absolute;
      top: 18px;
      right: -34px;
      width: 120px;
      text-align: center;
      transform: rotate(36deg);
      padding: 5px 0;
      color: #fff;
      background: var(--gradient-brand);
      font-size: 12px;
      font-weight: 950;
    }

    .price {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin: 18px 0 14px;
    }

    .price strong {
      font-size: 42px;
      line-height: 1;
      letter-spacing: -.05em;
      color: var(--color-text);
    }

    .price span {
      color: var(--color-muted);
      font-weight: 800;
    }

    .price-card ul {
      display: grid;
      gap: 10px;
      list-style: none;
      padding: 0;
      margin: 18px 0 22px;
    }

    .price-card li {
      display: flex;
      gap: 8px;
      color: var(--color-muted);
      font-weight: 700;
    }

    .price-card li::before {
      content: "✓";
      color: #0F766E;
      font-weight: 950;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 20px;
      align-items: start;
    }

    .faq-aside {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: var(--gradient-warm);
      border: 1px solid rgba(255,176,32,.20);
      box-shadow: var(--shadow-sm);
    }

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

    .faq-item {
      padding: 20px;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-weight: 950;
      color: var(--color-text);
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--color-primary-dark);
      background: rgba(109,93,246,.10);
      font-weight: 950;
      transition: var(--ease);
    }

    .faq-item[open] summary::after {
      content: "−";
      background: var(--gradient-brand);
      color: #fff;
    }

    .faq-item p {
      margin: 14px 0 0;
    }

    .cta-section {
      padding-top: 44px;
    }

    .cta-panel {
      display: grid;
      grid-template-columns: 1fr 410px;
      gap: 26px;
      align-items: center;
      padding: clamp(26px, 5vw, 46px);
      border-radius: var(--radius-xl);
      color: #fff;
      background:
        radial-gradient(circle at 12% 85%, rgba(255,176,32,.26), transparent 17rem),
        radial-gradient(circle at 82% 16%, rgba(20,184,166,.36), transparent 18rem),
        linear-gradient(135deg, #111936 0%, #4636D9 58%, #14B8A6 100%);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .cta-panel h2,
    .cta-panel p {
      color: #fff;
    }

    .cta-panel p {
      color: rgba(255,255,255,.76);
      max-width: 670px;
    }

    .lead-form {
      display: grid;
      gap: 12px;
      padding: 18px;
      border-radius: 26px;
      background: rgba(255,255,255,.92);
      border: 1px solid rgba(255,255,255,.46);
      box-shadow: 0 24px 60px rgba(11, 17, 45, .22);
    }

    .field-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .lead-form label {
      color: var(--color-text);
      font-weight: 900;
      font-size: 13px;
      margin-bottom: 6px;
      display: block;
    }

    .lead-form input,
    .lead-form select,
    .lead-form textarea {
      width: 100%;
      min-height: 45px;
      border: 1px solid rgba(20,33,61,.12);
      border-radius: 15px;
      padding: 10px 12px;
      color: var(--color-text);
      background: #fff;
      box-shadow: none;
      margin: 0;
      transition: var(--ease);
    }

    .lead-form textarea {
      resize: vertical;
      min-height: 76px;
    }

    .lead-form input:focus,
    .lead-form select:focus,
    .lead-form textarea:focus {
      border-color: rgba(109,93,246,.42);
      box-shadow: 0 0 0 4px rgba(109,93,246,.10);
    }

    .form-note {
      color: var(--color-muted);
      font-size: 12px;
      margin: 0;
    }

    .form-message {
      display: none;
      padding: 11px 12px;
      border-radius: 14px;
      color: #0F766E;
      background: rgba(20,184,166,.10);
      font-size: 13px;
      font-weight: 800;
    }

    .form-message.show {
      display: block;
    }

    .site-footer {
      padding: 48px 0 28px;
      background: #0D1328;
      color: rgba(255,255,255,.78);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 30px;
      align-items: start;
      padding-bottom: 26px;
      border-bottom: 1px solid rgba(255,255,255,.10);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 950;
      font-size: 18px;
      margin-bottom: 12px;
    }

    .footer-brand .brand-mark {
      box-shadow: none;
    }

    .footer-text {
      max-width: 660px;
      color: rgba(255,255,255,.66);
      margin: 0;
    }

    .footer-links {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .footer-links a {
      padding: 8px 12px;
      border-radius: 999px;
      color: rgba(255,255,255,.78);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.08);
      font-weight: 800;
      font-size: 14px;
    }

    .footer-links a:hover,
    .footer-links a:focus {
      color: #fff;
      background: rgba(255,255,255,.12);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 22px;
      color: rgba(255,255,255,.56);
      font-size: 13px;
    }

    .floating-cta {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 90;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px 10px 10px;
      border-radius: 999px;
      color: #fff;
      background: rgba(17, 25, 54, .88);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(14px);
      font-size: 13px;
      font-weight: 900;
    }

    .floating-cta .dot {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--gradient-brand);
    }

    @media (max-width: 1024px) {
      .section {
        padding: 62px 0;
      }

      .hero-content,
      .spec-layout,
      .news-layout,
      .faq-grid,
      .cta-panel {
        grid-template-columns: 1fr;
      }

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

      .feature-card.big {
        grid-column: span 2;
        grid-row: auto;
      }

      .scenario-grid,
      .trust-bar,
      .timeline {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .timeline::before {
        display: none;
      }

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

      .price-card.featured {
        transform: none;
      }

      .cta-panel {
        gap: 22px;
      }
    }

    @media (max-width: 768px) {
      :root {
        --nav-height: 68px;
      }

      .container {
        width: min(100% - 24px, var(--container));
      }

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

      .brand {
        justify-self: center;
      }

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

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

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

      .mobile-spacer {
        width: 42px;
        height: 42px;
      }

      .hero {
        padding-top: 20px;
      }

      .hero-stage {
        border-radius: 28px;
        padding: 26px;
      }

      .hero-data,
      .spec-grid,
      .feature-grid,
      .scenario-grid,
      .trust-bar,
      .timeline,
      .field-row {
        grid-template-columns: 1fr;
      }

      .feature-card.big {
        grid-column: auto;
      }

      .section-header {
        grid-template-columns: 1fr;
        align-items: start;
      }

      .news-item {
        grid-template-columns: auto minmax(0, 1fr);
      }

      .news-arrow {
        display: none;
      }

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

      .poster-track {
        grid-auto-columns: minmax(172px, 76vw);
      }

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

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

      .floating-cta {
        left: 12px;
        right: 12px;
        justify-content: center;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 34px;
      }

      h2 {
        font-size: 27px;
      }

      .section {
        padding: 52px 0;
      }

      .hero-actions {
        align-items: stretch;
      }

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

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

      .spec-panel,
      .recommend-box,
      .faq-aside,
      .lead-form {
        padding: 18px;
        border-radius: 22px;
      }

      .trust-item {
        padding: 14px;
      }

      .copyright {
        display: block;
      }

      .copyright span {
        display: block;
        margin-bottom: 8px;
      }
    }