/* roulang page: index */
:root {
      --primary: #0f766e;
      --primary-strong: #0b5f59;
      --primary-soft: #dff7f3;
      --secondary: #2563eb;
      --accent: #f59e0b;
      --ink: #12202f;
      --muted: #64748b;
      --soft: #f5f8fb;
      --soft-2: #eef4f7;
      --white: #ffffff;
      --line: rgba(15, 35, 52, .11);
      --line-strong: rgba(15, 35, 52, .18);
      --shadow-sm: 0 10px 30px rgba(15, 35, 52, .08);
      --shadow-md: 0 18px 46px rgba(15, 35, 52, .12);
      --shadow-lg: 0 28px 70px rgba(15, 35, 52, .16);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --nav-height: 76px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-width: 320px;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 5%, rgba(37, 99, 235, .10), transparent 28%),
        radial-gradient(circle at 88% 8%, rgba(15, 118, 110, .12), transparent 30%),
        linear-gradient(180deg, #f8fbfd 0%, #ffffff 42%, #f7fafc 100%);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

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

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

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

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

    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
      outline: 3px solid rgba(37, 99, 235, .22);
      outline-offset: 3px;
      border-radius: 10px;
    }

    .page-shell {
      overflow: hidden;
    }

    .container {
      max-width: 1180px;
    }

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

    .section-tight {
      padding: 66px 0;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(15, 118, 110, .18);
      border-radius: 999px;
      color: var(--primary-strong);
      background: rgba(223, 247, 243, .7);
      font-size: 14px;
      font-weight: 700;
      line-height: 1;
      margin-bottom: 14px;
    }

    .section-title {
      margin: 0;
      font-weight: 850;
      letter-spacing: -.04em;
      line-height: 1.16;
      font-size: clamp(28px, 4vw, 44px);
      color: var(--ink);
    }

    .section-desc {
      margin: 12px 0 0;
      max-width: 720px;
      color: var(--muted);
      font-size: 17px;
      line-height: 1.9;
    }

    .btn-brand {
      --bs-btn-padding-x: 22px;
      --bs-btn-padding-y: 12px;
      --bs-btn-border-radius: 999px;
      --bs-btn-font-weight: 800;
      color: #fff;
      background: linear-gradient(135deg, var(--primary) 0%, #14998e 100%);
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: 0 14px 30px rgba(15, 118, 110, .22);
    }

    .btn-brand:hover,
    .btn-brand:active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary-strong) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(15, 118, 110, .28);
    }

    .btn-ghost {
      --bs-btn-padding-x: 22px;
      --bs-btn-padding-y: 12px;
      --bs-btn-border-radius: 999px;
      --bs-btn-font-weight: 800;
      color: var(--ink);
      background: rgba(255,255,255,.82);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      backdrop-filter: blur(10px);
    }

    .btn-ghost:hover,
    .btn-ghost:active {
      color: var(--primary-strong);
      border-color: rgba(15, 118, 110, .28);
      background: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      color: var(--primary-strong);
      background: var(--primary-soft);
      border: 1px solid rgba(15, 118, 110, .15);
      white-space: nowrap;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, .82);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(15, 35, 52, .08);
    }

    .navbar {
      min-height: var(--nav-height);
      padding: 12px 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -.03em;
      padding: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(255,255,255,.20), transparent 42%),
        linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      box-shadow: 0 14px 32px rgba(15, 118, 110, .23);
      position: relative;
      overflow: hidden;
    }

    .brand-mark::after {
      content: "";
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #34d399;
      position: absolute;
      top: 7px;
      right: 7px;
      box-shadow: 0 0 0 5px rgba(52, 211, 153, .18);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }

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

    .brand-text span {
      margin-top: 4px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 700;
      letter-spacing: 0;
    }

    .navbar-nav {
      align-items: center;
      gap: 4px;
    }

    .nav-link {
      color: #334155;
      font-size: 15px;
      font-weight: 800;
      border-radius: 999px;
      padding: 10px 15px !important;
    }

    .nav-link:hover {
      color: var(--primary-strong);
      background: rgba(15, 118, 110, .08);
    }

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

    .stage-chips {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: 14px;
      padding-left: 14px;
      border-left: 1px solid var(--line);
      white-space: nowrap;
    }

    .stage-chip {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      color: #475569;
      background: rgba(248, 250, 252, .9);
      border: 1px solid var(--line);
    }

    .stage-chip .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #94a3b8;
    }

    .stage-chip.is-live {
      color: #047857;
      background: rgba(236, 253, 245, .92);
      border-color: rgba(16, 185, 129, .26);
    }

    .stage-chip.is-live .dot {
      background: #10b981;
      box-shadow: 0 0 0 6px rgba(16, 185, 129, .14);
    }

    .nav-search {
      display: flex;
      align-items: center;
      width: 208px;
      height: 42px;
      margin-left: 14px;
      padding: 0 8px 0 14px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(248, 250, 252, .82);
      transition: border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
    }

    .nav-search:focus-within {
      background: #fff;
      border-color: rgba(15, 118, 110, .32);
      box-shadow: 0 0 0 4px rgba(15, 118, 110, .08);
    }

    .nav-search input {
      min-width: 0;
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--ink);
      font-size: 14px;
      font-weight: 700;
    }

    .nav-search input::placeholder {
      color: #94a3b8;
    }

    .nav-search button {
      width: 28px;
      height: 28px;
      border: 0;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(15, 118, 110, .10);
      transition: background-color .22s ease, transform .22s ease;
    }

    .nav-search button:hover {
      background: rgba(15, 118, 110, .18);
      transform: scale(1.05);
    }

    .navbar-toggler {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 10px 12px;
      box-shadow: none !important;
    }

    .hero {
      padding: 72px 0 48px;
    }

    .hero-board {
      border: 1px solid rgba(15, 35, 52, .10);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255,255,255,.96) 0%, rgba(248, 252, 251, .92) 58%, rgba(236, 253, 245, .78) 100%);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .hero-board::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(15, 118, 110, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 118, 110, .06) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.8), transparent 80%);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      padding: clamp(28px, 5vw, 54px);
    }

    .status-strip {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 12px 14px;
      border: 1px solid rgba(15, 118, 110, .15);
      border-radius: 999px;
      background: rgba(255,255,255,.76);
      box-shadow: 0 10px 26px rgba(15, 35, 52, .06);
      margin-bottom: 28px;
    }

    .status-strip-left,
    .status-strip-right {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
    }

    .pulse-dot {
      width: 11px;
      height: 11px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 0 8px rgba(16, 185, 129, .14);
      flex: 0 0 auto;
    }

    .status-text {
      font-size: 14px;
      color: #334155;
      font-weight: 800;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .status-time {
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
      white-space: nowrap;
    }

    .hero h1 {
      max-width: 840px;
      margin: 0;
      font-size: clamp(38px, 7vw, 76px);
      line-height: .98;
      letter-spacing: -.07em;
      font-weight: 950;
      color: #0f172a;
    }

    .hero-lead {
      max-width: 820px;
      margin: 24px 0 0;
      color: #526274;
      font-size: clamp(17px, 2vw, 20px);
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 30px;
    }

    .icon-matrix {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 12px;
      margin-top: 36px;
    }

    .matrix-item {
      min-height: 112px;
      padding: 18px;
      border: 1px solid rgba(15, 35, 52, .10);
      border-radius: 22px;
      background: rgba(255,255,255,.72);
      box-shadow: 0 12px 28px rgba(15, 35, 52, .07);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background-color .22s ease;
    }

    .matrix-item:hover {
      transform: translateY(-4px);
      border-color: rgba(15, 118, 110, .24);
      background: #fff;
      box-shadow: var(--shadow-md);
    }

    .matrix-item i {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: rgba(15, 118, 110, .10);
      border-radius: 15px;
      font-size: 18px;
      margin-bottom: 14px;
    }

    .matrix-item strong {
      display: block;
      font-size: 15px;
      font-weight: 900;
      color: #172033;
      line-height: 1.35;
    }

    .matrix-item span {
      display: block;
      margin-top: 6px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin-top: 22px;
    }

    .hero-metric {
      padding: 16px 18px;
      border: 1px solid rgba(15, 35, 52, .10);
      border-radius: 20px;
      background: rgba(15, 23, 42, .035);
    }

    .hero-metric b {
      display: block;
      color: var(--ink);
      font-size: 26px;
      font-weight: 950;
      letter-spacing: -.04em;
      line-height: 1.1;
    }

    .hero-metric span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

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

    .story-card,
    .glass-card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.86);
      box-shadow: var(--shadow-sm);
    }

    .story-card {
      padding: 34px;
      position: relative;
      overflow: hidden;
    }

    .story-card::after {
      content: "";
      width: 190px;
      height: 190px;
      position: absolute;
      right: -70px;
      bottom: -80px;
      border-radius: 50%;
      background: rgba(15, 118, 110, .10);
    }

    .story-card p {
      position: relative;
      margin: 0;
      color: #526274;
      font-size: 17px;
      line-height: 1.95;
    }

    .proof-list {
      position: relative;
      display: grid;
      gap: 12px;
      margin-top: 24px;
    }

    .proof-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 18px;
      background: #f8fafc;
      border: 1px solid rgba(15, 35, 52, .08);
    }

    .proof-item i {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: var(--primary-soft);
      border-radius: 12px;
      flex: 0 0 auto;
    }

    .proof-item strong {
      display: block;
      font-weight: 900;
      color: var(--ink);
      line-height: 1.3;
    }

    .proof-item span {
      display: block;
      color: var(--muted);
      font-size: 14px;
      margin-top: 3px;
      line-height: 1.6;
    }

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

    .kpi-card {
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 24px;
      background: linear-gradient(180deg, #fff, #f8fbfd);
      box-shadow: var(--shadow-sm);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .kpi-card:hover {
      transform: translateY(-4px);
      border-color: rgba(15, 118, 110, .24);
      box-shadow: var(--shadow-md);
    }

    .kpi-card .num {
      font-size: clamp(30px, 4vw, 42px);
      font-weight: 950;
      letter-spacing: -.05em;
      line-height: 1;
      color: var(--primary-strong);
    }

    .kpi-card .label {
      margin-top: 10px;
      color: var(--muted);
      font-weight: 700;
      line-height: 1.6;
    }

    .news-wrap {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
      gap: 24px;
      align-items: start;
    }

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

    .news-item {
      display: grid;
      grid-template-columns: 116px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid rgba(15, 35, 52, .08);
      transition: background-color .22s ease;
    }

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

    .news-item:hover {
      background: #f8fbfd;
    }

    .news-date {
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .news-title {
      min-width: 0;
    }

    .news-title a {
      display: inline;
      color: var(--ink);
      font-weight: 900;
      line-height: 1.55;
      background-image: linear-gradient(var(--primary-soft), var(--primary-soft));
      background-size: 0% 8px;
      background-repeat: no-repeat;
      background-position: 0 92%;
    }

    .news-title a:hover {
      color: var(--primary-strong);
      background-size: 100% 8px;
    }

    .news-title span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.6;
    }

    .news-arrow {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--primary);
      background: rgba(15, 118, 110, .09);
    }

    .recommend-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, rgba(15, 118, 110, .96), rgba(37, 99, 235, .88));
      color: #fff;
      box-shadow: var(--shadow-md);
      position: sticky;
      top: calc(var(--nav-height) + 18px);
      overflow: hidden;
    }

    .recommend-card::after {
      content: "";
      position: absolute;
      right: -44px;
      bottom: -56px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(255,255,255,.12);
    }

    .recommend-card h3 {
      position: relative;
      margin: 16px 0 12px;
      font-weight: 950;
      letter-spacing: -.03em;
      line-height: 1.25;
    }

    .recommend-card p {
      position: relative;
      margin: 0;
      color: rgba(255,255,255,.82);
      line-height: 1.85;
    }

    .recommend-card ul {
      position: relative;
      display: grid;
      gap: 10px;
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
    }

    .recommend-card li {
      display: flex;
      align-items: center;
      gap: 9px;
      color: rgba(255,255,255,.92);
      font-weight: 700;
      font-size: 14px;
    }

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

    .service-card {
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: 26px;
      background: #fff;
      box-shadow: var(--shadow-sm);
      min-height: 240px;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(15, 118, 110, .24);
      box-shadow: var(--shadow-md);
    }

    .service-card.featured {
      grid-row: span 2;
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(223,247,243,.74)),
        radial-gradient(circle at 0 0, rgba(37, 99, 235, .16), transparent 36%);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      color: var(--primary);
      background: var(--primary-soft);
      font-size: 20px;
      margin-bottom: 18px;
    }

    .service-card h3 {
      margin: 0 0 10px;
      font-size: 21px;
      font-weight: 950;
      letter-spacing: -.03em;
      line-height: 1.35;
    }

    .service-card p {
      margin: 0;
      color: var(--muted);
      line-height: 1.85;
    }

    .service-card .mini-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }

    .mini-tag {
      padding: 6px 10px;
      border-radius: 999px;
      color: #475569;
      font-size: 12px;
      font-weight: 800;
      background: rgba(15, 35, 52, .05);
      border: 1px solid rgba(15, 35, 52, .08);
    }

    .compare-section {
      background: linear-gradient(180deg, #0f172a 0%, #142238 100%);
      color: #fff;
    }

    .compare-section .section-title {
      color: #fff;
    }

    .compare-section .section-desc {
      color: rgba(255,255,255,.70);
    }

    .compare-board {
      border: 1px solid rgba(255,255,255,.10);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.06);
      box-shadow: 0 20px 60px rgba(0,0,0,.20);
      overflow: hidden;
    }

    .compare-row {
      display: grid;
      grid-template-columns: 1.1fr .95fr .95fr;
      border-bottom: 1px solid rgba(255,255,255,.10);
    }

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

    .compare-cell {
      padding: 22px 24px;
      border-right: 1px solid rgba(255,255,255,.10);
    }

    .compare-cell:last-child {
      border-right: 0;
    }

    .compare-head {
      color: rgba(255,255,255,.58);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .08em;
    }

    .compare-cell strong {
      display: block;
      color: #fff;
      font-size: 18px;
      font-weight: 950;
      margin-bottom: 6px;
    }

    .compare-cell span {
      color: rgba(255,255,255,.70);
      line-height: 1.7;
    }

    .win {
      color: #86efac !important;
      font-weight: 900;
    }

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

    .app-card {
      padding: 30px;
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(180deg, rgba(255,255,255,.94), rgba(248,250,252,.86)),
        radial-gradient(circle at 80% 0%, rgba(15, 118, 110, .12), transparent 34%);
      box-shadow: var(--shadow-md);
    }

    .device-panel {
      padding: 18px;
      border-radius: 30px;
      background: #0f172a;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .device-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: rgba(255,255,255,.72);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .device-screen {
      border-radius: 22px;
      background: linear-gradient(180deg, #f8fafc, #e8f5f3);
      padding: 18px;
    }

    .screen-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 13px 0;
      border-bottom: 1px solid rgba(15, 35, 52, .10);
    }

    .screen-line:last-child {
      border-bottom: 0;
    }

    .screen-line b {
      color: var(--ink);
      font-size: 14px;
    }

    .screen-line span {
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
    }

    .step-list {
      display: grid;
      gap: 14px;
      margin-top: 24px;
    }

    .step-item {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: flex-start;
      padding: 16px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: 0 10px 24px rgba(15, 35, 52, .05);
    }

    .step-num {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--primary);
      font-weight: 950;
    }

    .step-item strong {
      display: block;
      font-weight: 950;
      color: var(--ink);
      line-height: 1.35;
    }

    .step-item span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

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

    .security-card {
      padding: 22px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background: #fff;
      box-shadow: var(--shadow-sm);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .security-card:hover {
      transform: translateY(-4px);
      border-color: rgba(15, 118, 110, .25);
      box-shadow: var(--shadow-md);
    }

    .security-card i {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 17px;
      background: #eef6ff;
      color: var(--secondary);
      font-size: 19px;
      margin-bottom: 16px;
    }

    .security-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .security-card p {
      margin: 0;
      color: var(--muted);
      line-height: 1.75;
      font-size: 14px;
    }

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

    .plan-card {
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: 28px;
      background: #fff;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .plan-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 118, 110, .24);
    }

    .plan-card.recommend {
      border-color: rgba(15, 118, 110, .30);
      box-shadow: 0 20px 50px rgba(15, 118, 110, .12);
    }

    .plan-ribbon {
      position: absolute;
      top: 18px;
      right: 18px;
    }

    .plan-card h3 {
      margin: 0;
      font-size: 23px;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .plan-price {
      margin: 16px 0;
      font-size: 34px;
      font-weight: 950;
      letter-spacing: -.04em;
      color: var(--primary-strong);
    }

    .plan-price small {
      font-size: 14px;
      color: var(--muted);
      font-weight: 800;
      letter-spacing: 0;
    }

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

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

    .plan-card li {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      color: #334155;
      font-weight: 700;
      line-height: 1.55;
    }

    .plan-card li i {
      color: var(--primary);
      margin-top: 5px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 28px;
      align-items: start;
    }

    .faq-aside {
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, #fff, #f8fbfd);
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: calc(var(--nav-height) + 18px);
    }

    .faq-aside h2 {
      margin: 0;
      font-size: 30px;
      font-weight: 950;
      letter-spacing: -.04em;
      line-height: 1.22;
    }

    .faq-aside p {
      margin: 14px 0 0;
      color: var(--muted);
      line-height: 1.85;
    }

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

    .accordion-item {
      border: 1px solid var(--line) !important;
      border-radius: 22px !important;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 10px 28px rgba(15, 35, 52, .06);
    }

    .accordion-button {
      padding: 20px 22px;
      color: var(--ink);
      background: #fff;
      font-weight: 950;
      line-height: 1.5;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary-strong);
      background: #f2fbf9;
    }

    .accordion-button::after {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background-color: rgba(15, 118, 110, .10);
      background-position: center;
      background-size: 16px;
    }

    .accordion-body {
      padding: 0 22px 22px;
      color: var(--muted);
      line-height: 1.9;
    }

    .contact-section {
      padding-top: 0;
    }

    .contact-panel {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 24px;
      padding: clamp(24px, 4vw, 42px);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(15, 118, 110, .96), rgba(37, 99, 235, .90));
      color: #fff;
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .contact-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(circle at 14% 10%, rgba(255,255,255,.22), transparent 25%),
        radial-gradient(circle at 94% 76%, rgba(255,255,255,.16), transparent 28%);
      pointer-events: none;
    }

    .contact-copy,
    .contact-form {
      position: relative;
    }

    .contact-copy h2 {
      margin: 0;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: -.05em;
    }

    .contact-copy p {
      margin: 18px 0 0;
      color: rgba(255,255,255,.78);
      line-height: 1.9;
      font-size: 17px;
    }

    .assurance-bar {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 26px;
    }

    .assurance-item {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px;
      border-radius: 18px;
      background: rgba(255,255,255,.11);
      border: 1px solid rgba(255,255,255,.14);
      color: rgba(255,255,255,.92);
      font-weight: 800;
      font-size: 14px;
    }

    .contact-form {
      padding: 24px;
      border-radius: 26px;
      background: rgba(255,255,255,.96);
      color: var(--ink);
      box-shadow: 0 24px 55px rgba(0,0,0,.18);
    }

    .form-label {
      color: #334155;
      font-weight: 900;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      border: 1px solid rgba(15, 35, 52, .14);
      background-color: #f8fafc;
      color: var(--ink);
      font-weight: 700;
      box-shadow: none !important;
    }

    .form-control:focus,
    .form-select:focus {
      border-color: rgba(15, 118, 110, .42);
      background-color: #fff;
      box-shadow: 0 0 0 4px rgba(15, 118, 110, .09) !important;
    }

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

    .form-note {
      margin: 12px 0 0;
      color: #64748b;
      font-size: 13px;
      line-height: 1.65;
    }

    .toast-lite {
      display: none;
      margin-top: 14px;
      padding: 12px 14px;
      border-radius: 14px;
      background: #ecfdf5;
      border: 1px solid rgba(16, 185, 129, .28);
      color: #047857;
      font-weight: 800;
      line-height: 1.55;
    }

    .toast-lite.show {
      display: block;
    }

    .site-footer {
      padding: 54px 0 30px;
      background: #0f172a;
      color: rgba(255,255,255,.74);
    }

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

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 14px;
    }

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

    .footer-brand strong {
      display: block;
      color: #fff;
      font-size: 20px;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .footer-brand span {
      display: block;
      margin-top: 4px;
      color: rgba(255,255,255,.58);
      font-size: 14px;
    }

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

    .footer-links a {
      padding: 9px 13px;
      border-radius: 999px;
      color: rgba(255,255,255,.72);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.08);
      font-weight: 800;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(15, 118, 110, .55);
      border-color: rgba(255,255,255,.16);
      transform: translateY(-2px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 24px;
      color: rgba(255,255,255,.52);
      font-size: 14px;
      line-height: 1.7;
    }

    .floating-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 999;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 12px 10px 16px;
      border-radius: 999px;
      background: rgba(15, 23, 42, .88);
      color: #fff;
      box-shadow: 0 18px 44px rgba(15, 23, 42, .26);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,.12);
    }

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

    .floating-cta a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 13px;
      border-radius: 999px;
      color: #08312e;
      background: #a7f3d0;
      font-size: 13px;
      font-weight: 950;
    }

    .floating-cta a:hover {
      color: #062725;
      background: #d1fae5;
      transform: translateY(-1px);
    }

    @media (max-width: 1199px) {
      .icon-matrix {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

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

      .service-card.featured {
        grid-row: auto;
        grid-column: span 2;
      }

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

    @media (max-width: 991px) {
      :root {
        --nav-height: 70px;
      }

      .section {
        padding: 70px 0;
      }

      .navbar-collapse {
        padding: 16px 0 8px;
      }

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

      .stage-chips {
        margin: 12px 0 0;
        padding: 12px 0 0;
        border-left: 0;
        border-top: 1px solid var(--line);
        overflow-x: auto;
      }

      .nav-search {
        width: 100%;
        margin: 14px 0 0;
      }

      .kpi-panel,
      .news-wrap,
      .app-stage,
      .faq-wrap,
      .contact-panel {
        grid-template-columns: 1fr;
      }

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

      .compare-row {
        grid-template-columns: 1fr;
      }

      .compare-cell {
        border-right: 0;
        border-bottom: 1px solid rgba(255,255,255,.10);
      }

      .compare-cell:last-child {
        border-bottom: 0;
      }

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

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

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

    @media (max-width: 767px) {
      .hero {
        padding: 48px 0 34px;
      }

      .hero-inner {
        padding: 24px;
      }

      .status-strip {
        align-items: flex-start;
        flex-direction: column;
        border-radius: 24px;
      }

      .icon-matrix,
      .hero-metrics,
      .kpi-grid,
      .service-grid,
      .security-grid,
      .assurance-bar {
        grid-template-columns: 1fr;
      }

      .service-card.featured {
        grid-column: auto;
      }

      .news-item {
        grid-template-columns: 1fr auto;
        gap: 8px 14px;
      }

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

      .section-title-row {
        display: block;
      }

      .section-desc {
        font-size: 16px;
      }

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

      .floating-cta span {
        overflow: hidden;
        text-overflow: ellipsis;
      }
    }

    @media (max-width: 520px) {
      .brand-text span {
        display: none;
      }

      .hero h1 {
        letter-spacing: -.05em;
      }

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

      .matrix-item,
      .kpi-card,
      .service-card,
      .security-card,
      .plan-card,
      .contact-form {
        border-radius: 22px;
      }

      .footer-bottom {
        display: block;
      }

      .floating-cta span {
        display: none;
      }

      .floating-cta {
        width: auto;
      }
    }

/* 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}