/* roulang page: index */
:root {
      --primary: #1f6fff;
      --primary-dark: #1554c7;
      --primary-soft: #eaf2ff;
      --secondary: #16c7a1;
      --accent: #ffb547;
      --ink: #101828;
      --text: #344054;
      --muted: #667085;
      --light: #f7f9fc;
      --lighter: #fbfcff;
      --white: #ffffff;
      --border: #e4e7ec;
      --border-strong: #d0d5dd;
      --danger: #ef4444;
      --success: #12b76a;
      --radius-xs: 10px;
      --radius-sm: 14px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --shadow-sm: 0 8px 24px rgba(16, 24, 40, .08);
      --shadow-md: 0 18px 50px rgba(16, 24, 40, .12);
      --shadow-lg: 0 30px 90px rgba(31, 111, 255, .18);
      --container: 1180px;
      --nav-height: 116px;
      --ease: cubic-bezier(.2, .8, .2, 1);
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 10% 0%, rgba(31, 111, 255, .10), transparent 30%),
        radial-gradient(circle at 90% 12%, rgba(22, 199, 161, .12), transparent 28%),
        linear-gradient(180deg, #fbfdff 0%, #f6f8fb 42%, #ffffff 100%);
      line-height: 1.75;
      letter-spacing: .01em;
      overflow-x: hidden;
    }

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

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

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

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

    button:focus,
    a:focus,
    input:focus,
    textarea:focus,
    select:focus {
      outline: 3px solid rgba(31, 111, 255, .18);
      outline-offset: 3px;
    }

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

    .site-header {
      position: fixed;
      inset: 0 0 auto 0;
      z-index: 1000;
      background: rgba(255, 255, 255, .86);
      border-bottom: 1px solid rgba(228, 231, 236, .78);
      backdrop-filter: blur(18px);
      transition: box-shadow .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
    }

    .site-header.is-shrink {
      background: rgba(255, 255, 255, .94);
      box-shadow: 0 12px 36px rgba(16, 24, 40, .10);
    }

    .brand-row {
      height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      transition: height .25s var(--ease), opacity .25s var(--ease);
    }

    .site-header.is-shrink .brand-row {
      height: 0;
      opacity: 0;
      pointer-events: none;
      overflow: hidden;
    }

    .brand-link {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: max-content;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
      background: linear-gradient(135deg, var(--primary) 0%, #6a5cff 55%, var(--secondary) 100%);
      box-shadow: 0 14px 28px rgba(31, 111, 255, .25);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }

    .brand-name {
      font-size: 22px;
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -.02em;
    }

    .brand-note {
      font-size: 12px;
      color: var(--muted);
      margin-top: 3px;
    }

    .top-search {
      flex: 1;
      max-width: 430px;
      position: relative;
    }

    .top-search i {
      position: absolute;
      left: 16px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--muted);
      pointer-events: none;
    }

    .top-search input {
      width: 100%;
      border: 1px solid var(--border);
      background: var(--lighter);
      border-radius: 999px;
      padding: 12px 18px 12px 44px;
      color: var(--ink);
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
    }

    .top-search input:focus {
      border-color: rgba(31, 111, 255, .55);
      background: #fff;
      box-shadow: 0 0 0 5px rgba(31, 111, 255, .10);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .channel-row {
      min-height: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      border-top: 1px solid rgba(228, 231, 236, .72);
      transition: min-height .25s var(--ease), border-color .25s var(--ease);
    }

    .site-header.is-shrink .channel-row {
      min-height: 58px;
      border-top-color: transparent;
    }

    .channel-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-item-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 9px 16px;
      color: var(--muted);
      font-weight: 700;
      font-size: 14px;
      border: 1px solid transparent;
    }

    .nav-item-link:hover {
      color: var(--primary);
      background: var(--primary-soft);
      border-color: rgba(31, 111, 255, .14);
    }

    .nav-item-link.active {
      color: var(--primary-dark);
      background: #edf4ff;
      border-color: rgba(31, 111, 255, .22);
    }

    .nav-compact-brand {
      display: none;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      color: var(--ink);
    }

    .site-header.is-shrink .nav-compact-brand {
      display: inline-flex;
    }

    .mini-mark {
      width: 30px;
      height: 30px;
      border-radius: 11px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      font-size: 13px;
      font-weight: 900;
    }

    .mobile-toggle {
      width: 42px;
      height: 42px;
      display: none;
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 14px;
      color: var(--ink);
      align-items: center;
      justify-content: center;
      transition: all .22s var(--ease);
    }

    .mobile-toggle:hover,
    .mobile-toggle.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      box-shadow: 0 12px 24px rgba(31, 111, 255, .22);
    }

    .btn-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      border-radius: 999px;
      padding: 12px 20px;
      font-weight: 800;
      border: 1px solid transparent;
      line-height: 1.2;
      white-space: nowrap;
      cursor: pointer;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
    }

    .btn-custom:hover {
      transform: translateY(-2px);
    }

    .btn-primary-custom {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #6158ff);
      box-shadow: 0 14px 32px rgba(31, 111, 255, .28);
    }

    .btn-primary-custom:hover {
      color: #fff;
      box-shadow: 0 18px 42px rgba(31, 111, 255, .34);
    }

    .btn-secondary-custom {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(31, 111, 255, .20);
      box-shadow: 0 10px 26px rgba(16, 24, 40, .06);
    }

    .btn-secondary-custom:hover {
      background: var(--primary-soft);
      border-color: rgba(31, 111, 255, .34);
      color: var(--primary-dark);
    }

    .btn-ghost-custom {
      color: var(--ink);
      background: rgba(255, 255, 255, .72);
      border-color: rgba(228, 231, 236, .92);
    }

    .btn-ghost-custom:hover {
      color: var(--primary);
      border-color: rgba(31, 111, 255, .25);
      background: #fff;
    }

    main {
      padding-top: var(--nav-height);
    }

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

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

    .section-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 26px;
      margin-bottom: 34px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      border: 1px solid rgba(31, 111, 255, .16);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .section-title {
      margin: 0;
      color: var(--ink);
      font-size: clamp(28px, 3vw, 44px);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: -.035em;
    }

    .section-desc {
      margin: 12px 0 0;
      color: var(--muted);
      max-width: 720px;
      font-size: 16px;
      line-height: 1.9;
    }

    .hero {
      padding: 70px 0 84px;
      min-height: calc(100vh - 20px);
      display: flex;
      align-items: center;
    }

    .hero-shell {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(228, 231, 236, .78);
      border-radius: 38px;
      background:
        linear-gradient(115deg, rgba(255, 255, 255, .94) 0%, rgba(255, 255, 255, .82) 45%, rgba(233, 242, 255, .84) 100%);
      box-shadow: var(--shadow-lg);
      padding: clamp(28px, 5vw, 62px);
    }

    .hero-shell::before {
      content: "";
      position: absolute;
      width: 420px;
      height: 420px;
      right: -120px;
      top: -140px;
      border-radius: 999px;
      background: radial-gradient(circle, rgba(31, 111, 255, .18), transparent 68%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .72fr);
      align-items: center;
      gap: 46px;
      z-index: 1;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 22px;
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      padding: 8px 12px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid rgba(228, 231, 236, .90);
      color: var(--text);
      font-weight: 800;
      font-size: 13px;
      box-shadow: 0 8px 20px rgba(16, 24, 40, .05);
    }

    .badge-soft i {
      color: var(--primary);
    }

    h1 {
      color: var(--ink);
      font-size: clamp(38px, 5.4vw, 68px);
      line-height: 1.05;
      letter-spacing: -.06em;
      font-weight: 950;
      margin: 0;
      max-width: 860px;
    }

    .hero-intro {
      margin: 22px 0 0;
      max-width: 760px;
      font-size: 18px;
      color: #475467;
      line-height: 1.95;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      margin-top: 34px;
    }

    .hero-proof {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin-top: 34px;
      max-width: 760px;
    }

    .proof-item {
      padding: 16px 18px;
      border: 1px solid rgba(228, 231, 236, .92);
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, .72);
      box-shadow: 0 8px 24px rgba(16, 24, 40, .05);
    }

    .proof-value {
      display: block;
      color: var(--ink);
      font-size: 24px;
      font-weight: 950;
      letter-spacing: -.03em;
      line-height: 1.1;
    }

    .proof-label {
      display: block;
      color: var(--muted);
      font-size: 13px;
      margin-top: 7px;
      line-height: 1.45;
    }

    .vertical-stage {
      position: relative;
      margin-inline: auto;
      width: min(100%, 370px);
      min-height: 590px;
      border-radius: 34px;
      padding: 16px;
      background:
        linear-gradient(180deg, rgba(16, 24, 40, .94), rgba(29, 41, 57, .98)),
        radial-gradient(circle at 50% 0%, rgba(31, 111, 255, .4), transparent 40%);
      box-shadow: 0 34px 80px rgba(16, 24, 40, .26);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, .16);
    }

    .vertical-stage::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(255,255,255,.08), transparent 30%, rgba(31,111,255,.10));
      pointer-events: none;
    }

    .stage-top {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #fff;
      margin-bottom: 14px;
    }

    .stage-title {
      font-weight: 900;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .stage-title span {
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 0 5px rgba(18, 183, 106, .14);
    }

    .stage-mini {
      color: rgba(255, 255, 255, .70);
      font-size: 12px;
    }

    .feed-card {
      position: relative;
      z-index: 1;
      border-radius: 24px;
      padding: 18px;
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .14);
      color: #fff;
      backdrop-filter: blur(14px);
      margin-bottom: 14px;
      transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
    }

    .feed-card:hover {
      transform: translateY(-3px);
      background: rgba(255, 255, 255, .14);
      border-color: rgba(255, 255, 255, .24);
    }

    .feed-card.primary-feed {
      min-height: 210px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      background:
        linear-gradient(180deg, rgba(31, 111, 255, .16), rgba(16, 24, 40, .50)),
        radial-gradient(circle at 20% 20%, rgba(22, 199, 161, .40), transparent 35%),
        linear-gradient(135deg, rgba(31, 111, 255, .9), rgba(97, 88, 255, .74));
    }

    .feed-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      width: fit-content;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .18);
      color: rgba(255, 255, 255, .92);
      font-size: 12px;
      font-weight: 850;
      margin-bottom: 12px;
    }

    .feed-card h2,
    .feed-card h3 {
      font-size: 20px;
      line-height: 1.35;
      margin: 0;
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .feed-card p {
      margin: 9px 0 0;
      color: rgba(255, 255, 255, .76);
      font-size: 13px;
      line-height: 1.75;
    }

    .feed-meta {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 14px;
      color: rgba(255, 255, 255, .76);
      font-size: 12px;
    }

    .stage-bottom {
      position: absolute;
      z-index: 2;
      left: 16px;
      right: 16px;
      bottom: 16px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      align-items: center;
      border-radius: 22px;
      background: rgba(255, 255, 255, .92);
      padding: 12px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, .22);
    }

    .stage-bottom strong {
      display: block;
      color: var(--ink);
      font-size: 14px;
      line-height: 1.35;
    }

    .stage-bottom span {
      color: var(--muted);
      font-size: 12px;
    }

    .round-action {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--primary);
      color: #fff;
      box-shadow: 0 10px 20px rgba(31, 111, 255, .25);
    }

    .metric-board {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 20px;
      align-items: stretch;
    }

    .panel-card {
      background: rgba(255, 255, 255, .86);
      border: 1px solid rgba(228, 231, 236, .88);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 26px;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
    }

    .panel-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(31, 111, 255, .20);
    }

    .dashboard-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .metric-card {
      padding: 22px 18px;
      border-radius: 22px;
      background: linear-gradient(180deg, #fff, #f9fbff);
      border: 1px solid var(--border);
      min-height: 150px;
    }

    .metric-icon {
      width: 40px;
      height: 40px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: var(--primary-soft);
      margin-bottom: 16px;
    }

    .metric-value {
      color: var(--ink);
      font-size: 32px;
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.04em;
    }

    .metric-label {
      color: var(--muted);
      font-size: 13px;
      margin-top: 10px;
      line-height: 1.55;
    }

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

    .trend-list li {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 13px 14px;
      border-radius: 16px;
      background: var(--lighter);
      border: 1px solid var(--border);
    }

    .trend-list strong {
      color: var(--ink);
      font-size: 14px;
    }

    .trend-list span {
      color: var(--success);
      font-weight: 900;
      font-size: 13px;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 22px;
      align-items: stretch;
    }

    .feature-highlight {
      min-height: 100%;
      background:
        linear-gradient(135deg, rgba(31, 111, 255, .96), rgba(97, 88, 255, .92)),
        radial-gradient(circle at 80% 0%, rgba(255, 181, 71, .36), transparent 38%);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .feature-highlight::after {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      right: -70px;
      bottom: -80px;
      background: rgba(255, 255, 255, .12);
    }

    .feature-highlight h2 {
      position: relative;
      z-index: 1;
      font-size: 34px;
      line-height: 1.25;
      font-weight: 950;
      margin: 0;
      letter-spacing: -.04em;
    }

    .feature-highlight p {
      position: relative;
      z-index: 1;
      margin: 16px 0 0;
      color: rgba(255,255,255,.82);
      line-height: 1.9;
    }

    .feature-pills {
      position: relative;
      z-index: 1;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 26px;
    }

    .feature-pills span {
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255,255,255,.18);
      padding: 8px 12px;
      font-size: 13px;
      font-weight: 800;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .service-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 24px;
      box-shadow: 0 10px 28px rgba(16, 24, 40, .06);
      transition: all .22s var(--ease);
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(31, 111, 255, .22);
    }

    .service-card .icon-box {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 17px;
      background: var(--primary-soft);
      color: var(--primary);
      margin-bottom: 18px;
      font-size: 18px;
    }

    .service-card h3 {
      margin: 0;
      color: var(--ink);
      font-size: 20px;
      font-weight: 950;
      line-height: 1.35;
    }

    .service-card p {
      color: var(--muted);
      margin: 10px 0 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .compare-card {
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1px solid var(--border);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .compare-card.better {
      border-color: rgba(31, 111, 255, .22);
      background: linear-gradient(180deg, #fff, #f3f8ff);
    }

    .compare-card h3 {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 18px;
      color: var(--ink);
      font-size: 22px;
      font-weight: 950;
    }

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

    .compare-list li {
      display: flex;
      gap: 11px;
      align-items: flex-start;
      color: var(--text);
      padding: 12px 0;
      border-bottom: 1px dashed var(--border);
    }

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

    .compare-list i {
      margin-top: 6px;
      color: var(--muted);
    }

    .better .compare-list i {
      color: var(--success);
    }

    .steps-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      counter-reset: step;
    }

    .step-card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      background: #fff;
      box-shadow: 0 10px 26px rgba(16, 24, 40, .06);
      transition: all .22s var(--ease);
    }

    .step-card:hover {
      transform: translateY(-4px);
      border-color: rgba(31, 111, 255, .20);
      box-shadow: var(--shadow-md);
    }

    .step-card::before {
      counter-increment: step;
      content: "0" counter(step);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 16px;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 950;
      margin-bottom: 18px;
    }

    .step-card h3 {
      margin: 0;
      color: var(--ink);
      font-size: 19px;
      font-weight: 950;
    }

    .step-card p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .testimonial-section {
      background:
        linear-gradient(180deg, #101828, #162033),
        radial-gradient(circle at 20% 10%, rgba(31, 111, 255, .34), transparent 35%);
      color: #fff;
      overflow: hidden;
    }

    .testimonial-section .section-title,
    .testimonial-section .section-desc {
      color: #fff;
    }

    .testimonial-section .section-desc {
      color: rgba(255,255,255,.72);
    }

    .testimonial-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 20px;
      align-items: stretch;
    }

    .quote-card {
      border-radius: var(--radius-lg);
      padding: 30px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255,255,255,.12);
      backdrop-filter: blur(12px);
      box-shadow: 0 18px 46px rgba(0,0,0,.20);
    }

    .quote-card blockquote {
      margin: 0;
      color: rgba(255,255,255,.92);
      font-size: 22px;
      line-height: 1.75;
      font-weight: 800;
      letter-spacing: -.02em;
    }

    .quote-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 22px;
      color: rgba(255,255,255,.72);
    }

    .avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      color: #fff;
      font-weight: 950;
    }

    .stars {
      color: var(--accent);
      letter-spacing: 2px;
      margin-bottom: 14px;
    }

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

    .trust-chip {
      min-height: 96px;
      border-radius: 22px;
      padding: 18px;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.12);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .trust-chip strong {
      color: #fff;
      font-size: 18px;
      font-weight: 950;
    }

    .trust-chip span {
      color: rgba(255,255,255,.66);
      font-size: 13px;
      margin-top: 5px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(290px, .8fr);
      gap: 22px;
      align-items: start;
    }

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

    .news-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid var(--border);
    }

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

    .news-index {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: var(--lighter);
      color: var(--primary);
      font-weight: 950;
      border: 1px solid var(--border);
    }

    .news-item h3 {
      margin: 0;
      color: var(--ink);
      font-size: 18px;
      line-height: 1.45;
      font-weight: 950;
    }

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

    .news-item:hover {
      background: #f8fbff;
    }

    .news-item:hover .news-index {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    .news-arrow {
      color: var(--muted);
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--lighter);
      border: 1px solid var(--border);
    }

    .news-item:hover .news-arrow {
      color: #fff;
      background: var(--primary);
      border-color: var(--primary);
      transform: translateX(2px);
    }

    .insight-card {
      background:
        linear-gradient(180deg, #fff, #f6faff);
      border: 1px solid rgba(31, 111, 255, .16);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: 88px;
    }

    .insight-card h3 {
      margin: 0;
      color: var(--ink);
      font-size: 22px;
      font-weight: 950;
    }

    .insight-card p {
      color: var(--muted);
      margin: 12px 0 0;
      font-size: 14px;
      line-height: 1.85;
    }

    .topic-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 20px;
    }

    .topic-tags a,
    .topic-tags span {
      display: inline-flex;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--border);
      padding: 8px 11px;
      font-size: 13px;
      color: var(--text);
      font-weight: 800;
    }

    .topic-tags a:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    .hot-list {
      margin-top: 22px;
      display: grid;
      gap: 12px;
    }

    .hot-row {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 13px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 18px;
    }

    .hot-row b {
      color: var(--accent);
      font-size: 18px;
      line-height: 1.2;
    }

    .hot-row strong {
      display: block;
      color: var(--ink);
      font-size: 14px;
    }

    .hot-row span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.55;
      margin-top: 3px;
    }

    .faq-wrap {
      max-width: 920px;
      margin: 0 auto;
    }

    .accordion-custom {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 22px;
      box-shadow: 0 10px 26px rgba(16, 24, 40, .06);
      overflow: hidden;
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
    }

    .faq-item:hover {
      border-color: rgba(31, 111, 255, .22);
      box-shadow: var(--shadow-sm);
    }

    .faq-button {
      width: 100%;
      border: 0;
      background: transparent;
      color: var(--ink);
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      text-align: left;
      padding: 22px 24px;
      font-weight: 950;
      font-size: 17px;
      cursor: pointer;
    }

    .faq-button i {
      transition: transform .22s var(--ease);
      color: var(--primary);
    }

    .faq-button[aria-expanded="true"] i {
      transform: rotate(180deg);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 22px;
      color: var(--muted);
      line-height: 1.9;
      font-size: 15px;
    }

    .faq-answer.show {
      display: block;
    }

    .cta-section {
      padding-bottom: 96px;
    }

    .cta-shell {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 24px;
      padding: clamp(26px, 4vw, 42px);
      border-radius: 34px;
      background:
        radial-gradient(circle at 0% 0%, rgba(22, 199, 161, .18), transparent 36%),
        linear-gradient(135deg, #101828 0%, #172642 56%, #1f6fff 100%);
      color: #fff;
      box-shadow: 0 34px 80px rgba(16, 24, 40, .24);
      overflow: hidden;
    }

    .cta-copy h2 {
      font-size: clamp(30px, 3.4vw, 48px);
      line-height: 1.16;
      font-weight: 950;
      letter-spacing: -.045em;
      margin: 0;
    }

    .cta-copy p {
      color: rgba(255,255,255,.76);
      margin: 16px 0 0;
      line-height: 1.9;
    }

    .cta-points {
      display: grid;
      gap: 12px;
      margin-top: 26px;
      padding: 0;
      list-style: none;
    }

    .cta-points li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: rgba(255,255,255,.86);
    }

    .cta-points i {
      color: var(--secondary);
      margin-top: 6px;
    }

    .form-card {
      background: rgba(255,255,255,.95);
      border: 1px solid rgba(255,255,255,.35);
      border-radius: 28px;
      padding: 26px;
      color: var(--text);
      box-shadow: 0 22px 56px rgba(0, 0, 0, .18);
    }

    .form-card h3 {
      margin: 0 0 16px;
      color: var(--ink);
      font-size: 24px;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .form-label {
      color: var(--ink);
      font-weight: 850;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      border-radius: 16px;
      border: 1px solid var(--border);
      padding: 12px 14px;
      color: var(--ink);
      background-color: #fff;
      transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
    }

    .form-control:focus,
    .form-select:focus {
      border-color: rgba(31, 111, 255, .55);
      box-shadow: 0 0 0 5px rgba(31, 111, 255, .10);
    }

    .form-hint {
      color: var(--muted);
      font-size: 12px;
      line-height: 1.65;
      margin-top: 12px;
    }

    .site-footer {
      padding: 56px 0 34px;
      background: #0b1220;
      color: rgba(255,255,255,.72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 26px;
      align-items: start;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255,255,255,.10);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 24px;
      font-weight: 950;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      box-shadow: none;
    }

    .footer-desc {
      max-width: 620px;
      color: rgba(255,255,255,.64);
      line-height: 1.9;
      margin: 0;
    }

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

    .footer-links a {
      display: inline-flex;
      align-items: center;
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.09);
      color: rgba(255,255,255,.78);
      font-weight: 750;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(31,111,255,.35);
      border-color: rgba(31,111,255,.45);
      transform: translateY(-2px);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-top: 24px;
      font-size: 13px;
      color: rgba(255,255,255,.52);
    }

    .floating-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 900;
      display: none;
      align-items: center;
      gap: 12px;
      border-radius: 999px;
      padding: 10px 12px 10px 18px;
      background: rgba(16, 24, 40, .90);
      color: #fff;
      box-shadow: 0 18px 50px rgba(16, 24, 40, .26);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,.12);
    }

    .floating-cta span {
      font-size: 13px;
      font-weight: 850;
      white-space: nowrap;
    }

    .floating-cta a {
      padding: 9px 13px;
      border-radius: 999px;
      background: #fff;
      color: var(--primary-dark);
      font-weight: 900;
      font-size: 13px;
    }

    .floating-cta a:hover {
      background: var(--primary-soft);
    }

    @media (max-width: 1024px) {
      :root {
        --nav-height: 78px;
      }

      .brand-row {
        height: 0;
        opacity: 0;
        pointer-events: none;
        overflow: hidden;
      }

      .channel-row {
        min-height: 78px;
        border-top: 0;
      }

      .nav-compact-brand {
        display: inline-flex;
      }

      .hero-grid,
      .metric-board,
      .feature-layout,
      .testimonial-grid,
      .news-layout,
      .cta-shell,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
        padding-top: 44px;
      }

      .vertical-stage {
        min-height: 520px;
      }

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

      .insight-card {
        position: static;
      }

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

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

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

      .channel-nav {
        position: absolute;
        top: calc(100% + 10px);
        left: 14px;
        right: 14px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border-radius: 22px;
        background: rgba(255,255,255,.96);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
      }

      .channel-nav.open {
        display: flex;
      }

      .nav-item-link {
        justify-content: center;
        padding: 13px 16px;
      }

      .channel-row {
        position: relative;
      }

      .header-actions .btn-custom,
      .top-search {
        display: none;
      }

      .section {
        padding: 64px 0;
      }

      .section-header {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 26px;
      }

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

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

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

      .hero-proof,
      .dashboard-grid,
      .service-grid,
      .compare-wrap,
      .steps-strip,
      .trust-wall {
        grid-template-columns: 1fr;
      }

      .vertical-stage {
        width: 100%;
        min-height: 500px;
      }

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

      .news-arrow {
        grid-column: 2;
        justify-self: start;
      }

      .floating-cta {
        display: flex;
      }
    }

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

      .section-title {
        font-size: 28px;
      }

      .proof-item,
      .panel-card,
      .service-card,
      .compare-card,
      .step-card,
      .quote-card,
      .insight-card,
      .form-card {
        padding: 20px;
      }

      .hero-shell {
        padding: 22px;
      }

      .stage-bottom {
        grid-template-columns: 1fr;
      }

      .round-action {
        justify-self: start;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }

      .floating-cta {
        left: 12px;
        right: 12px;
        transform: none;
        justify-content: space-between;
      }
    }

/* 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}