/* roulang page: index */
:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --primary-soft: #dbeafe;
      --primary-soft-2: #eff6ff;
      --secondary: #0f766e;
      --accent: #f59e0b;
      --accent-soft: #fff7ed;
      --success: #16a34a;
      --danger: #dc2626;
      --ink: #0f172a;
      --text: #334155;
      --muted: #64748b;
      --weak: #94a3b8;
      --line: #e2e8f0;
      --line-strong: #cbd5e1;
      --bg: #f8fbff;
      --surface: #ffffff;
      --surface-soft: #f1f5f9;
      --shadow-xs: 0 4px 14px rgba(15, 23, 42, .06);
      --shadow-sm: 0 10px 28px rgba(15, 23, 42, .08);
      --shadow-md: 0 18px 48px rgba(37, 99, 235, .14);
      --shadow-lg: 0 28px 80px rgba(15, 23, 42, .16);
      --radius-sm: 12px;
      --radius: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --container: 1180px;
      --header-h: 76px;
      --transition: all .22s ease;
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 0%, rgba(37, 99, 235, .10), transparent 32%),
        radial-gradient(circle at 85% 8%, rgba(14, 165, 233, .10), transparent 28%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 42%, #ffffff 100%);
      line-height: 1.72;
      min-width: 320px;
      overflow-x: hidden;
    }

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
      outline: 3px solid rgba(37, 99, 235, .24);
      outline-offset: 3px;
      border-radius: 12px;
    }

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

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

    .page-wrap {
      position: relative;
      overflow: hidden;
    }

    .container-xl {
      max-width: var(--container);
    }

    .section {
      padding: 86px 0;
      position: relative;
    }

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

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(37, 99, 235, .09);
      border: 1px solid rgba(37, 99, 235, .15);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: .02em;
      margin-bottom: 14px;
    }

    .section-title {
      color: var(--ink);
      font-size: clamp(28px, 3vw, 42px);
      line-height: 1.18;
      letter-spacing: -.04em;
      font-weight: 850;
      margin: 0 0 16px;
    }

    .section-desc {
      color: var(--muted);
      font-size: 17px;
      line-height: 1.85;
      margin: 0;
    }

    .text-gradient {
      background: linear-gradient(110deg, var(--primary-dark), #0891b2 55%, var(--secondary));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      height: var(--header-h);
      background: rgba(255, 255, 255, .84);
      backdrop-filter: saturate(160%) blur(18px);
      border-bottom: 1px solid rgba(226, 232, 240, .82);
      transition: var(--transition);
    }

    .site-header.is-scrolled {
      box-shadow: var(--shadow-xs);
      background: rgba(255, 255, 255, .94);
    }

    .navbar {
      min-height: var(--header-h);
      padding: 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.03em;
      white-space: normal;
      max-width: 360px;
      line-height: 1.15;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #0ea5e9);
      box-shadow: 0 12px 24px rgba(37, 99, 235, .24);
      font-size: 20px;
    }

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

    .navbar-nav {
      align-items: center;
      gap: 6px;
    }

    .nav-link {
      color: var(--text);
      font-weight: 700;
      padding: 10px 14px !important;
      border-radius: 999px;
      position: relative;
    }

    .nav-link:hover {
      color: var(--primary-dark);
      background: rgba(37, 99, 235, .07);
    }

    .nav-link.active {
      color: var(--primary-dark) !important;
      background: var(--primary-soft);
    }

    .navbar-toggler {
      border: 0;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: var(--primary-soft-2);
      padding: 0;
      box-shadow: none !important;
    }

    .navbar-toggler-icon {
      width: 1.2em;
      height: 1.2em;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: 18px;
    }

    .btn-brand,
    .btn-ghost,
    .btn-white,
    .btn-soft {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      border-radius: 999px;
      min-height: 46px;
      padding: 12px 20px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: var(--transition);
      cursor: pointer;
      line-height: 1.2;
      white-space: nowrap;
    }

    .btn-brand {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #0ea5e9);
      box-shadow: 0 16px 32px rgba(37, 99, 235, .22);
    }

    .btn-brand:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 20px 42px rgba(37, 99, 235, .30);
    }

    .btn-brand:active {
      transform: translateY(0);
      box-shadow: 0 10px 22px rgba(37, 99, 235, .22);
    }

    .btn-ghost {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(37, 99, 235, .18);
      box-shadow: var(--shadow-xs);
    }

    .btn-ghost:hover {
      color: var(--primary-dark);
      background: var(--primary-soft-2);
      border-color: rgba(37, 99, 235, .32);
      transform: translateY(-2px);
    }

    .btn-white {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(255, 255, 255, .65);
      box-shadow: 0 18px 36px rgba(15, 23, 42, .12);
    }

    .btn-white:hover {
      color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 24px 44px rgba(15, 23, 42, .18);
    }

    .btn-soft {
      color: var(--ink);
      background: rgba(255, 255, 255, .72);
      border-color: rgba(203, 213, 225, .8);
    }

    .btn-soft:hover {
      color: var(--primary-dark);
      background: #fff;
      transform: translateY(-2px);
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      color: var(--primary-dark);
      background: rgba(219, 234, 254, .75);
      border: 1px solid rgba(37, 99, 235, .14);
    }

    .hero {
      padding: 34px 0 76px;
    }

    .hero-ribbon {
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(37, 99, 235, .10), rgba(14, 165, 233, .08)),
        #ffffff;
      border: 1px solid rgba(191, 219, 254, .88);
      box-shadow: var(--shadow-sm);
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 26px;
    }

    .ribbon-left {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .ribbon-icon {
      width: 44px;
      height: 44px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #38bdf8);
      box-shadow: 0 12px 28px rgba(37, 99, 235, .25);
      flex: 0 0 auto;
    }

    .ribbon-title {
      color: var(--ink);
      font-size: 16px;
      font-weight: 850;
      margin: 0;
    }

    .ribbon-note {
      color: var(--muted);
      font-size: 14px;
      margin: 2px 0 0;
    }

    .hero-banner {
      border-radius: var(--radius-xl);
      background:
        linear-gradient(110deg, rgba(15, 23, 42, .88), rgba(30, 64, 175, .88) 54%, rgba(14, 116, 144, .82)),
        radial-gradient(circle at 18% 28%, rgba(255, 255, 255, .22), transparent 28%);
      color: #fff;
      overflow: hidden;
      position: relative;
      box-shadow: var(--shadow-lg);
    }

    .hero-banner::before,
    .hero-banner::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      background: rgba(255, 255, 255, .12);
      filter: blur(.1px);
      pointer-events: none;
    }

    .hero-banner::before {
      width: 260px;
      height: 260px;
      right: -82px;
      top: -126px;
    }

    .hero-banner::after {
      width: 170px;
      height: 170px;
      left: 42%;
      bottom: -94px;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr);
      gap: 28px;
      align-items: stretch;
      padding: clamp(32px, 5vw, 58px);
    }

    .hero-copy {
      max-width: 760px;
    }

    .hero h1 {
      color: #fff;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.08;
      letter-spacing: -.06em;
      font-weight: 900;
      margin: 0 0 18px;
    }

    .hero-lead {
      color: rgba(255, 255, 255, .82);
      font-size: clamp(16px, 1.6vw, 19px);
      line-height: 1.86;
      max-width: 710px;
      margin: 0 0 24px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 24px;
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-point {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 9px 12px;
      border-radius: 999px;
      color: rgba(255, 255, 255, .90);
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .18);
      font-size: 14px;
      font-weight: 700;
    }

    .hero-panel {
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .18);
      border-radius: 26px;
      padding: 20px;
      backdrop-filter: blur(16px);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 280px;
    }

    .panel-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }

    .panel-label {
      color: rgba(255, 255, 255, .68);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .panel-title {
      color: #fff;
      font-size: 22px;
      line-height: 1.25;
      font-weight: 900;
      letter-spacing: -.03em;
      margin: 0;
    }

    .status-dot {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #dcfce7;
      background: rgba(34, 197, 94, .16);
      border: 1px solid rgba(187, 247, 208, .22);
      border-radius: 999px;
      padding: 7px 10px;
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .status-dot::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #22c55e;
      box-shadow: 0 0 0 6px rgba(34, 197, 94, .14);
    }

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

    .mini-timeline li {
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 10px;
      align-items: start;
      color: rgba(255, 255, 255, .82);
      font-size: 14px;
      line-height: 1.55;
    }

    .mini-timeline span {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(255, 255, 255, .16);
      color: #fff;
      font-weight: 900;
      font-size: 12px;
    }

    .metric-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 18px;
    }

    .metric-item {
      border-radius: 18px;
      background: rgba(255, 255, 255, .13);
      border: 1px solid rgba(255, 255, 255, .16);
      padding: 14px 12px;
    }

    .metric-number {
      display: block;
      color: #fff;
      font-size: 22px;
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .metric-text {
      display: block;
      color: rgba(255, 255, 255, .70);
      font-size: 12px;
      margin-top: 6px;
    }

    .app-strip {
      margin-top: -36px;
      position: relative;
      z-index: 3;
    }

    .app-card {
      background: rgba(255, 255, 255, .94);
      border: 1px solid rgba(226, 232, 240, .88);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      padding: 24px;
    }

    .app-grid {
      display: grid;
      grid-template-columns: 1.1fr repeat(4, minmax(110px, 1fr));
      gap: 14px;
      align-items: stretch;
    }

    .app-intro {
      padding: 14px 18px;
      border-radius: 22px;
      background: linear-gradient(135deg, var(--primary-soft-2), #ffffff);
      border: 1px solid rgba(37, 99, 235, .12);
    }

    .app-intro h2 {
      font-size: 22px;
      color: var(--ink);
      letter-spacing: -.03em;
      font-weight: 900;
      margin: 0 0 8px;
    }

    .app-intro p {
      color: var(--muted);
      margin: 0;
      font-size: 15px;
      line-height: 1.7;
    }

    .app-tile {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 12px;
      min-height: 132px;
      padding: 17px;
      border-radius: 22px;
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-xs);
      transition: var(--transition);
    }

    .app-tile:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .26);
    }

    .tile-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: var(--primary-soft-2);
      color: var(--primary-dark);
      font-size: 20px;
    }

    .app-tile strong {
      display: block;
      color: var(--ink);
      font-size: 16px;
      font-weight: 900;
      margin-bottom: 2px;
    }

    .app-tile span {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.45;
    }

    .pain-solution {
      background: linear-gradient(180deg, rgba(255, 255, 255, .76), rgba(248, 251, 255, .96));
    }

    .split-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 28px;
      align-items: start;
    }

    .pain-stack {
      display: grid;
      gap: 14px;
    }

    .pain-card {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 14px;
      align-items: start;
      padding: 20px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-xs);
      transition: var(--transition);
    }

    .pain-card:hover {
      transform: translateY(-3px);
      border-color: rgba(245, 158, 11, .35);
      box-shadow: var(--shadow-sm);
    }

    .pain-icon {
      width: 48px;
      height: 48px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      background: var(--accent-soft);
      color: #b45309;
      font-size: 22px;
    }

    .pain-card h3,
    .solution-card h3,
    .benefit-card h3,
    .step-card h3,
    .trust-card h3,
    .proof-card h3 {
      color: var(--ink);
      font-size: 18px;
      line-height: 1.35;
      letter-spacing: -.02em;
      font-weight: 900;
      margin: 0 0 6px;
    }

    .pain-card p,
    .solution-card p,
    .benefit-card p,
    .step-card p,
    .trust-card p,
    .proof-card p {
      color: var(--muted);
      margin: 0;
      font-size: 15px;
      line-height: 1.72;
    }

    .solution-card {
      height: 100%;
      padding: 28px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, rgba(37, 99, 235, .96), rgba(14, 165, 233, .90)),
        var(--primary);
      color: #fff;
      box-shadow: var(--shadow-md);
      overflow: hidden;
      position: relative;
    }

    .solution-card::after {
      content: "";
      position: absolute;
      right: -70px;
      top: -70px;
      width: 210px;
      height: 210px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .16);
    }

    .solution-card h3 {
      color: #fff;
      font-size: 30px;
      margin-bottom: 12px;
      position: relative;
      z-index: 1;
    }

    .solution-card p {
      color: rgba(255, 255, 255, .82);
      font-size: 16px;
      position: relative;
      z-index: 1;
    }

    .solution-list {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin: 24px 0 0;
      padding: 0;
      list-style: none;
    }

    .solution-list li {
      padding: 14px 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .13);
      border: 1px solid rgba(255, 255, 255, .16);
      color: rgba(255, 255, 255, .86);
      font-weight: 700;
      font-size: 14px;
      line-height: 1.45;
    }

    .service-tabs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
    }

    .service-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-xs);
      padding: 26px;
      transition: var(--transition);
      height: 100%;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(37, 99, 235, .22);
    }

    .service-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 16px;
    }

    .service-icon {
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      background: var(--primary-soft-2);
      color: var(--primary-dark);
      font-size: 24px;
    }

    .service-card h3 {
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.03em;
      font-size: 22px;
      margin: 0 0 10px;
    }

    .service-card p {
      color: var(--muted);
      margin: 0 0 18px;
      line-height: 1.78;
    }

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

    .check-list li {
      display: flex;
      gap: 9px;
      color: var(--text);
      font-size: 15px;
      line-height: 1.55;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(22, 163, 74, .10);
      color: var(--success);
      font-size: 13px;
      font-weight: 900;
      margin-top: 2px;
    }

    .about-band {
      border-radius: var(--radius-xl);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .about-band-inner {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 0;
      align-items: stretch;
    }

    .about-copy {
      padding: clamp(28px, 4vw, 44px);
    }

    .about-copy h2 {
      color: var(--ink);
      font-size: clamp(28px, 3vw, 40px);
      line-height: 1.18;
      letter-spacing: -.04em;
      font-weight: 900;
      margin: 0 0 16px;
    }

    .about-copy p {
      color: var(--muted);
      font-size: 16px;
      line-height: 1.86;
      margin: 0 0 18px;
    }

    .about-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .about-visual {
      min-height: 380px;
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(37, 99, 235, .10), rgba(14, 165, 233, .06)),
        var(--primary-soft-2);
      display: grid;
      place-items: center;
    }

    .dashboard-card {
      width: min(100%, 470px);
      border-radius: 30px;
      background: rgba(255, 255, 255, .86);
      border: 1px solid rgba(226, 232, 240, .9);
      box-shadow: var(--shadow-md);
      padding: 22px;
    }

    .dash-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--line);
      margin-bottom: 16px;
    }

    .dash-head strong {
      color: var(--ink);
      font-size: 18px;
      font-weight: 900;
    }

    .dash-row {
      display: grid;
      grid-template-columns: 38px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px 0;
      border-bottom: 1px solid rgba(226, 232, 240, .74);
    }

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

    .dash-num {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-weight: 900;
    }

    .dash-title {
      color: var(--ink);
      font-weight: 850;
      line-height: 1.35;
    }

    .dash-sub {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.4;
      margin-top: 2px;
    }

    .dash-state {
      color: var(--secondary);
      font-size: 12px;
      font-weight: 900;
      background: rgba(15, 118, 110, .10);
      padding: 6px 9px;
      border-radius: 999px;
      white-space: nowrap;
    }

    .steps-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      counter-reset: step;
    }

    .step-card {
      position: relative;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-xs);
      padding: 26px;
      transition: var(--transition);
    }

    .step-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(37, 99, 235, .22);
    }

    .step-card::before {
      counter-increment: step;
      content: "0" counter(step);
      position: absolute;
      right: 18px;
      top: 10px;
      color: rgba(37, 99, 235, .09);
      font-size: 64px;
      line-height: 1;
      letter-spacing: -.08em;
      font-weight: 950;
    }

    .step-dot {
      width: 52px;
      height: 52px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #0ea5e9);
      box-shadow: 0 14px 28px rgba(37, 99, 235, .20);
      font-size: 22px;
      margin-bottom: 18px;
    }

    .trust-section {
      background: linear-gradient(180deg, #fff, var(--primary-soft-2));
    }

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

    .trust-card {
      background: rgba(255, 255, 255, .92);
      border: 1px solid rgba(226, 232, 240, .92);
      border-radius: var(--radius);
      box-shadow: var(--shadow-xs);
      padding: 22px;
      transition: var(--transition);
    }

    .trust-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .22);
    }

    .trust-icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 21px;
      margin-bottom: 14px;
    }

    .benefit-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 24px;
      align-items: stretch;
    }

    .benefit-panel {
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, rgba(15, 23, 42, .94), rgba(30, 64, 175, .88)),
        var(--ink);
      color: #fff;
      padding: 30px;
      box-shadow: var(--shadow-lg);
      min-height: 100%;
    }

    .benefit-panel h2 {
      color: #fff;
      font-size: clamp(26px, 3vw, 38px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -.04em;
      margin: 0 0 14px;
    }

    .benefit-panel p {
      color: rgba(255, 255, 255, .78);
      margin: 0 0 22px;
      line-height: 1.85;
    }

    .benefit-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 24px;
    }

    .benefit-stat {
      padding: 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .14);
    }

    .benefit-stat strong {
      display: block;
      color: #fff;
      font-size: 24px;
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .benefit-stat span {
      color: rgba(255, 255, 255, .68);
      font-size: 13px;
      display: block;
      margin-top: 8px;
    }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .benefit-card {
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-xs);
      padding: 22px;
      transition: var(--transition);
    }

    .benefit-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .22);
    }

    .benefit-card .benefit-icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      background: var(--accent-soft);
      color: #b45309;
      font-size: 20px;
      margin-bottom: 14px;
    }

    .compare-box {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .compare-head,
    .compare-row {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 0;
    }

    .compare-head > div {
      padding: 18px 22px;
      color: var(--ink);
      background: var(--surface-soft);
      font-weight: 900;
      border-right: 1px solid var(--line);
    }

    .compare-head > div:last-child {
      border-right: 0;
      color: var(--primary-dark);
      background: var(--primary-soft-2);
    }

    .compare-row > div {
      padding: 18px 22px;
      border-top: 1px solid var(--line);
      border-right: 1px solid var(--line);
      color: var(--text);
      min-height: 74px;
      display: flex;
      align-items: center;
      line-height: 1.55;
    }

    .compare-row > div:last-child {
      border-right: 0;
      background: rgba(239, 246, 255, .56);
      color: var(--ink);
      font-weight: 750;
    }

    .compare-tag {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      padding: 6px 10px;
      background: rgba(22, 163, 74, .10);
      color: var(--success);
      font-size: 12px;
      font-weight: 900;
      margin-left: 8px;
    }

    .news-section {
      background: linear-gradient(180deg, var(--bg), #fff);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(290px, .65fr);
      gap: 24px;
      align-items: start;
    }

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

    .news-item a {
      display: grid;
      grid-template-columns: 112px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-xs);
      transition: var(--transition);
    }

    .news-item a:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .24);
      color: inherit;
    }

    .news-date {
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
      background: var(--surface-soft);
      border-radius: 999px;
      padding: 7px 10px;
      text-align: center;
      white-space: nowrap;
    }

    .news-title {
      color: var(--ink);
      font-size: 17px;
      font-weight: 900;
      line-height: 1.45;
      margin: 0 0 4px;
    }

    .news-desc {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.55;
      margin: 0;
    }

    .news-arrow {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      color: var(--primary-dark);
      background: var(--primary-soft-2);
      border-radius: 50%;
      font-weight: 900;
    }

    .recommend-card {
      position: sticky;
      top: calc(var(--header-h) + 20px);
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
    }

    .recommend-card h3 {
      color: var(--ink);
      font-size: 22px;
      font-weight: 900;
      letter-spacing: -.03em;
      margin: 0 0 10px;
    }

    .recommend-card p {
      color: var(--muted);
      margin: 0 0 18px;
      line-height: 1.75;
    }

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

    .quick-links a {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      padding: 13px 14px;
      border-radius: 15px;
      background: var(--surface-soft);
      color: var(--text);
      font-weight: 800;
    }

    .quick-links a:hover {
      background: var(--primary-soft);
      color: var(--primary-dark);
      transform: translateX(3px);
    }

    .proof-grid {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 24px;
      align-items: stretch;
    }

    .proof-score {
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, var(--primary), #0891b2);
      color: #fff;
      padding: 30px;
      box-shadow: var(--shadow-md);
    }

    .proof-score strong {
      display: block;
      font-size: clamp(44px, 6vw, 68px);
      line-height: .95;
      letter-spacing: -.07em;
      font-weight: 950;
      margin-bottom: 12px;
    }

    .proof-score p {
      color: rgba(255, 255, 255, .80);
      margin: 0;
      line-height: 1.8;
    }

    .proof-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .proof-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-xs);
      padding: 22px;
      transition: var(--transition);
    }

    .proof-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .22);
    }

    .stars {
      color: #f59e0b;
      letter-spacing: 2px;
      margin-bottom: 12px;
      font-size: 16px;
    }

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

    .faq-aside {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: var(--primary-soft-2);
      border: 1px solid rgba(37, 99, 235, .12);
    }

    .faq-aside h2 {
      color: var(--ink);
      font-size: clamp(26px, 3vw, 38px);
      font-weight: 900;
      line-height: 1.18;
      letter-spacing: -.04em;
      margin: 0 0 14px;
    }

    .faq-aside p {
      color: var(--muted);
      margin: 0 0 20px;
      line-height: 1.8;
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border: 1px solid var(--line) !important;
      border-radius: var(--radius) !important;
      overflow: hidden;
      background: #fff;
      box-shadow: var(--shadow-xs);
    }

    .accordion-button {
      color: var(--ink);
      font-weight: 900;
      font-size: 16px;
      padding: 20px 22px;
      background: #fff;
      box-shadow: none !important;
      border-radius: 0 !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary-dark);
      background: var(--primary-soft-2);
    }

    .accordion-button::after {
      width: 1rem;
      height: 1rem;
      background-size: 1rem;
      filter: saturate(1.4);
    }

    .accordion-body {
      color: var(--muted);
      line-height: 1.85;
      padding: 0 22px 22px;
      background: #fff;
    }

    .cta-section {
      padding: 54px 0 88px;
    }

    .cta-card {
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(37, 99, 235, .96), rgba(14, 165, 233, .90)),
        var(--primary);
      color: #fff;
      box-shadow: var(--shadow-lg);
      padding: clamp(28px, 5vw, 48px);
      display: grid;
      grid-template-columns: 1fr 380px;
      gap: 28px;
      align-items: center;
      overflow: hidden;
      position: relative;
    }

    .cta-card::before {
      content: "";
      position: absolute;
      width: 260px;
      height: 260px;
      border-radius: 999px;
      right: -80px;
      bottom: -110px;
      background: rgba(255, 255, 255, .16);
    }

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

    .cta-copy h2 {
      color: #fff;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.15;
      letter-spacing: -.05em;
      font-weight: 900;
      margin: 0 0 14px;
    }

    .cta-copy p {
      color: rgba(255, 255, 255, .82);
      font-size: 16px;
      line-height: 1.85;
      margin: 0 0 22px;
      max-width: 720px;
    }

    .cta-form {
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .20);
      border-radius: 26px;
      padding: 20px;
      backdrop-filter: blur(16px);
    }

    .form-label {
      color: rgba(255, 255, 255, .86);
      font-size: 14px;
      font-weight: 850;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      border-radius: 16px;
      min-height: 48px;
      border-color: rgba(255, 255, 255, .36);
      background: rgba(255, 255, 255, .92);
      color: var(--ink);
      box-shadow: none !important;
    }

    .form-control:focus,
    .form-select:focus {
      border-color: #fff;
      background: #fff;
    }

    .form-text {
      color: rgba(255, 255, 255, .70);
      line-height: 1.55;
    }

    .form-message {
      display: none;
      margin-top: 12px;
      padding: 11px 12px;
      border-radius: 14px;
      color: #dcfce7;
      background: rgba(22, 163, 74, .18);
      border: 1px solid rgba(187, 247, 208, .24);
      font-weight: 800;
      font-size: 14px;
    }

    .site-footer {
      background: #0b1220;
      color: rgba(255, 255, 255, .72);
      padding: 54px 0 28px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: start;
      padding-bottom: 30px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
      margin-bottom: 24px;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 900;
      font-size: 18px;
      letter-spacing: -.03em;
      margin-bottom: 12px;
    }

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

    .footer-desc {
      max-width: 720px;
      margin: 0;
      line-height: 1.85;
      color: rgba(255, 255, 255, .66);
    }

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

    .footer-links a {
      color: rgba(255, 255, 255, .72);
      padding: 9px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .08);
      font-weight: 750;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(37, 99, 235, .34);
      transform: translateY(-2px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      color: rgba(255, 255, 255, .55);
      font-size: 14px;
    }

    .footer-bottom a {
      color: rgba(255, 255, 255, .72);
    }

    .footer-bottom a:hover {
      color: #fff;
    }

    .floating-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 1020;
      display: none;
      align-items: center;
      gap: 10px;
      padding: 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .92);
      border: 1px solid rgba(226, 232, 240, .92);
      box-shadow: 0 16px 40px rgba(15, 23, 42, .18);
      backdrop-filter: blur(14px);
    }

    .floating-cta span {
      color: var(--ink);
      font-weight: 850;
      font-size: 14px;
      padding-left: 8px;
      white-space: nowrap;
    }

    @media (max-width: 1199.98px) {
      .app-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .app-intro {
        grid-column: 1 / -1;
      }

      .proof-grid,
      .benefit-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 991.98px) {
      :root {
        --header-h: 68px;
      }

      .site-header {
        height: auto;
      }

      .navbar {
        min-height: var(--header-h);
        padding: 8px 0;
      }

      .navbar-collapse {
        margin-top: 12px;
        padding: 14px;
        border-radius: 22px;
        background: rgba(255, 255, 255, .96);
        border: 1px solid var(--line);
        box-shadow: var(--shadow-sm);
      }

      .navbar-nav {
        align-items: stretch;
      }

      .nav-actions {
        margin: 12px 0 0;
        display: grid;
        grid-template-columns: 1fr 1fr;
      }

      .nav-actions .btn-brand,
      .nav-actions .btn-ghost {
        width: 100%;
      }

      .hero {
        padding-top: 24px;
      }

      .hero-inner {
        grid-template-columns: 1fr;
      }

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

      .split-grid,
      .about-band-inner,
      .faq-wrap,
      .news-layout,
      .cta-card {
        grid-template-columns: 1fr;
      }

      .solution-list,
      .service-tabs,
      .steps-row,
      .trust-grid,
      .proof-cards {
        grid-template-columns: repeat(2, 1fr);
      }

      .recommend-card {
        position: static;
      }

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

      .compare-head,
      .compare-row {
        min-width: 760px;
      }
    }

    @media (max-width: 767.98px) {
      .section {
        padding: 62px 0;
      }

      .section-tight {
        padding: 48px 0;
      }

      .hero-ribbon {
        align-items: flex-start;
        flex-direction: column;
        padding: 16px;
        border-radius: 22px;
      }

      .hero-inner {
        padding: 28px 20px;
      }

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

      .metric-row,
      .solution-list,
      .service-tabs,
      .steps-row,
      .trust-grid,
      .benefit-grid,
      .proof-cards {
        grid-template-columns: 1fr;
      }

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

      .news-date {
        width: fit-content;
      }

      .news-arrow {
        display: none;
      }

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

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

      .floating-cta {
        display: flex;
      }
    }

    @media (max-width: 575.98px) {
      .container-xl {
        padding-left: 18px;
        padding-right: 18px;
      }

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

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

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

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

      .app-card,
      .service-card,
      .step-card,
      .trust-card,
      .benefit-card,
      .recommend-card,
      .faq-aside {
        padding: 20px;
      }

      .about-visual {
        min-height: auto;
        padding: 20px;
      }

      .dash-row {
        grid-template-columns: 34px 1fr;
      }

      .dash-state {
        grid-column: 2;
        width: fit-content;
      }

      .cta-card {
        padding: 24px 18px;
        border-radius: 28px;
      }

      .floating-cta {
        width: calc(100% - 24px);
        justify-content: space-between;
        border-radius: 22px;
      }

      .floating-cta span {
        white-space: normal;
        line-height: 1.35;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}