/* roulang page: index */
:root {
      --brand: #1d4ed8;
      --brand-2: #2563eb;
      --brand-3: #60a5fa;
      --ink: #102033;
      --muted: #63758a;
      --soft: #eef6ff;
      --soft-2: #f7fbff;
      --line: #d9e6f5;
      --white: #ffffff;
      --success: #13a46b;
      --warning: #f59e0b;
      --danger: #ef4444;
      --shadow-sm: 0 8px 24px rgba(30, 64, 175, .08);
      --shadow-md: 0 18px 46px rgba(30, 64, 175, .13);
      --shadow-lg: 0 28px 80px rgba(15, 44, 90, .16);
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 30px;
      --radius-xl: 38px;
      --nav-h: 74px;
      --bottom-bar: 78px;
      --ease: all .24s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 92px;
    }

    body {
      margin: 0;
      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% 0%, rgba(96, 165, 250, .18), transparent 28%),
        radial-gradient(circle at 92% 12%, rgba(37, 99, 235, .12), transparent 30%),
        linear-gradient(180deg, #ffffff 0%, #f8fbff 44%, #ffffff 100%);
      line-height: 1.72;
      padding-bottom: var(--bottom-bar);
    }

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

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

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

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

    ::selection {
      background: rgba(37, 99, 235, .18);
      color: var(--ink);
    }

    .container {
      width: min(1160px, calc(100% - 40px));
      max-width: 1160px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, .88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(217, 230, 245, .86);
      box-shadow: 0 10px 26px rgba(15, 44, 90, .04);
    }

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

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      letter-spacing: -.02em;
      color: var(--ink);
      padding: 0;
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-3));
      box-shadow: 0 12px 28px rgba(37, 99, 235, .22);
      font-weight: 900;
    }

    .brand-text {
      font-size: 1.08rem;
    }

    .navbar-toggler {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 9px 11px;
      box-shadow: none;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
    }

    .navbar-nav {
      gap: 8px;
      align-items: center;
    }

    .nav-link {
      color: var(--muted);
      font-weight: 700;
      border-radius: 999px;
      padding: 10px 16px !important;
    }

    .nav-link:hover,
    .nav-link:focus,
    .nav-link.active {
      color: var(--brand);
      background: var(--soft);
    }

    .nav-search {
      width: 260px;
      position: relative;
    }

    .nav-search input {
      width: 100%;
      border: 1px solid var(--line);
      background: #fff;
      border-radius: 999px;
      padding: 10px 42px 10px 16px;
      color: var(--ink);
      outline: none;
      transition: var(--ease);
    }

    .nav-search input:focus {
      border-color: rgba(37, 99, 235, .45);
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
    }

    .nav-search span {
      position: absolute;
      right: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--brand);
    }

    .top-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      background: var(--brand);
      color: #fff;
      font-weight: 800;
      border: 1px solid var(--brand);
      box-shadow: 0 14px 26px rgba(37, 99, 235, .18);
    }

    .top-cta:hover {
      color: #fff;
      background: #173fb4;
      transform: translateY(-1px);
      box-shadow: 0 18px 34px rgba(37, 99, 235, .24);
    }

    .breadcrumb-shell {
      border-top: 1px solid rgba(217, 230, 245, .62);
      background: rgba(247, 251, 255, .72);
    }

    .breadcrumb {
      margin: 0;
      padding: 12px 0;
      color: var(--muted);
      font-size: .94rem;
    }

    .breadcrumb-item a {
      color: var(--brand);
      font-weight: 700;
    }

    .breadcrumb-item.active {
      color: var(--muted);
    }

    main {
      overflow: hidden;
    }

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

    .section-tight {
      padding: 68px 0;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 13px;
      border: 1px solid rgba(37, 99, 235, .14);
      background: rgba(238, 246, 255, .9);
      color: var(--brand);
      border-radius: 999px;
      font-weight: 800;
      font-size: .88rem;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: clamp(1.75rem, 2.6vw, 2.7rem);
      line-height: 1.18;
      letter-spacing: -.045em;
      font-weight: 900;
      color: var(--ink);
      margin-bottom: 14px;
    }

    .section-desc {
      color: var(--muted);
      font-size: 1.05rem;
      margin: 0;
      max-width: 680px;
    }

    .hero {
      padding: 74px 0 92px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
      gap: 44px;
      align-items: center;
    }

    .hero-copy {
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 14px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      color: var(--brand);
      font-weight: 800;
      margin-bottom: 20px;
    }

    .pulse-dot {
      width: 9px;
      height: 9px;
      border-radius: 999px;
      background: var(--success);
      box-shadow: 0 0 0 7px rgba(19, 164, 107, .12);
    }

    h1.hero-title {
      font-size: clamp(2.32rem, 4.4vw, 4.55rem);
      line-height: 1.04;
      letter-spacing: -.065em;
      font-weight: 950;
      color: #0b1b30;
      margin: 0 0 22px;
    }

    .hero-lead {
      color: #566b82;
      font-size: 1.12rem;
      margin: 0 0 28px;
      max-width: 610px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .btn-brand,
    .btn-ghost,
    .btn-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 50px;
      padding: 13px 22px;
      border-radius: 999px;
      font-weight: 850;
      border: 1px solid transparent;
      transition: var(--ease);
      cursor: pointer;
    }

    .btn-brand {
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow: 0 18px 34px rgba(37, 99, 235, .22);
    }

    .btn-brand:hover,
    .btn-brand:focus {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 24px 46px rgba(37, 99, 235, .28);
    }

    .btn-ghost {
      color: var(--brand);
      background: #fff;
      border-color: var(--line);
      box-shadow: 0 12px 26px rgba(15, 44, 90, .06);
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      color: #173fb4;
      border-color: rgba(37, 99, 235, .28);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-white {
      background: #fff;
      color: var(--brand);
      border-color: rgba(255, 255, 255, .8);
    }

    .btn-white:hover {
      color: #173fb4;
      transform: translateY(-2px);
    }

    .btn-brand:focus,
    .btn-ghost:focus,
    .btn-white:focus,
    .form-control:focus {
      outline: none;
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
    }

    .hero-kpis {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 620px;
    }

    .kpi-card {
      padding: 16px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, .82);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
    }

    .kpi-num {
      display: block;
      font-size: 1.28rem;
      font-weight: 950;
      color: var(--brand);
      line-height: 1.1;
      margin-bottom: 5px;
    }

    .kpi-label {
      color: var(--muted);
      font-size: .92rem;
      font-weight: 700;
    }

    .hero-visual-wrap {
      position: relative;
      min-height: 510px;
      transform: rotate(-1.6deg);
    }

    .hero-visual {
      position: relative;
      min-height: 500px;
      border-radius: var(--radius-xl);
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(238,246,255,.82)),
        radial-gradient(circle at 20% 18%, rgba(96,165,250,.38), transparent 32%),
        radial-gradient(circle at 86% 74%, rgba(29,78,216,.24), transparent 34%);
      border: 1px solid rgba(217, 230, 245, .92);
      box-shadow: var(--shadow-lg);
      transform: translateX(18px);
    }

    .hero-visual::before {
      content: "";
      position: absolute;
      inset: -28% -18% auto auto;
      width: 440px;
      height: 440px;
      border-radius: 46%;
      background: linear-gradient(135deg, rgba(37, 99, 235, .22), rgba(96, 165, 250, .08));
      transform: rotate(22deg);
    }

    .cover-header {
      position: absolute;
      left: 30px;
      right: 30px;
      top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 18px;
      border-radius: 22px;
      background: rgba(255,255,255,.86);
      border: 1px solid rgba(217,230,245,.92);
      backdrop-filter: blur(14px);
      transform: rotate(1.6deg);
    }

    .cover-title {
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      padding: 7px 11px;
      color: var(--success);
      background: rgba(19, 164, 107, .1);
      font-weight: 850;
      font-size: .86rem;
    }

    .cover-stage {
      position: absolute;
      inset: 104px 30px 32px;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 18px;
      transform: rotate(1.6deg);
    }

    .large-panel {
      min-height: 330px;
      border-radius: 30px;
      padding: 26px;
      background:
        linear-gradient(145deg, rgba(29, 78, 216, .92), rgba(37, 99, 235, .68)),
        linear-gradient(180deg, #2563eb, #1d4ed8);
      color: #fff;
      box-shadow: 0 22px 50px rgba(37, 99, 235, .24);
      position: relative;
      overflow: hidden;
    }

    .large-panel::after {
      content: "";
      position: absolute;
      right: -60px;
      bottom: -70px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(255,255,255,.12);
    }

    .large-panel strong {
      display: block;
      font-size: 1.5rem;
      line-height: 1.2;
      margin-bottom: 12px;
      letter-spacing: -.035em;
    }

    .large-panel p {
      color: rgba(255,255,255,.82);
      margin: 0;
      max-width: 300px;
    }

    .panel-lines {
      position: absolute;
      left: 26px;
      right: 26px;
      bottom: 24px;
      display: grid;
      gap: 10px;
    }

    .panel-line {
      height: 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.25);
      overflow: hidden;
    }

    .panel-line span {
      display: block;
      height: 100%;
      width: var(--w);
      border-radius: inherit;
      background: rgba(255,255,255,.72);
    }

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

    .float-card {
      background: rgba(255,255,255,.9);
      border: 1px solid rgba(217,230,245,.95);
      border-radius: 25px;
      padding: 20px;
      box-shadow: 0 18px 36px rgba(15, 44, 90, .1);
    }

    .float-card .mini-label {
      color: var(--muted);
      font-size: .88rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .float-card strong {
      display: block;
      font-size: 1.18rem;
      letter-spacing: -.02em;
      margin-bottom: 7px;
    }

    .float-card p {
      margin: 0;
      color: var(--muted);
      font-size: .92rem;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 12px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      background: var(--soft);
      color: var(--brand);
      font-size: .82rem;
      font-weight: 800;
      padding: 6px 10px;
      border: 1px solid rgba(37, 99, 235, .1);
    }

    .app-shell {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-md);
      padding: 28px;
    }

    .app-grid {
      display: grid;
      grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
      gap: 26px;
      align-items: stretch;
    }

    .app-card {
      border-radius: 28px;
      background: linear-gradient(180deg, var(--soft-2), #fff);
      border: 1px solid var(--line);
      padding: 26px;
      min-height: 100%;
    }

    .entry-list {
      display: grid;
      gap: 12px;
      margin-top: 20px;
    }

    .entry-item {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 14px;
      padding: 16px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--line);
      transition: var(--ease);
    }

    .entry-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(37, 99, 235, .22);
    }

    .entry-item strong {
      display: block;
      margin-bottom: 3px;
      font-weight: 900;
    }

    .entry-item span {
      display: block;
      color: var(--muted);
      font-size: .92rem;
    }

    .entry-icon {
      flex: 0 0 auto;
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: var(--brand);
      background: var(--soft);
      font-weight: 950;
    }

    .demo-panel {
      position: relative;
      min-height: 395px;
      border-radius: 28px;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(16,32,51,.92), rgba(29,78,216,.84)),
        radial-gradient(circle at 18% 20%, rgba(96,165,250,.42), transparent 30%);
      padding: 24px;
      color: #fff;
    }

    .demo-top {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: center;
      margin-bottom: 20px;
    }

    .demo-chip {
      border-radius: 999px;
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.22);
      padding: 8px 12px;
      font-weight: 850;
      font-size: .88rem;
    }

    .demo-list {
      display: grid;
      gap: 13px;
      position: relative;
      z-index: 1;
    }

    .demo-row {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 15px;
      border-radius: 20px;
      background: rgba(255,255,255,.11);
      border: 1px solid rgba(255,255,255,.16);
      backdrop-filter: blur(8px);
    }

    .demo-num {
      width: 34px;
      height: 34px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      background: rgba(255,255,255,.18);
      font-weight: 950;
    }

    .demo-row strong {
      display: block;
      margin-bottom: 2px;
    }

    .demo-row span {
      display: block;
      color: rgba(255,255,255,.72);
      font-size: .9rem;
    }

    .demo-state {
      color: #b7f7d7;
      font-size: .86rem;
      font-weight: 850;
    }

    .pain-sentence {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(37, 99, 235, .16);
      background: linear-gradient(90deg, rgba(238,246,255,.96), rgba(255,255,255,.92));
      box-shadow: var(--shadow-sm);
      padding: 22px 24px;
      margin-bottom: 26px;
      color: #31516f;
      font-size: 1.08rem;
      font-weight: 750;
    }

    .feature-ribbon {
      display: grid;
      grid-template-columns: 1fr 1.1fr .9fr;
      gap: 18px;
    }

    .feature-card {
      position: relative;
      overflow: hidden;
      min-height: 235px;
      padding: 26px;
      border-radius: 30px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(37, 99, 235, .25);
    }

    .feature-card.tall {
      min-height: 300px;
      background: linear-gradient(180deg, #fff, var(--soft-2));
    }

    .feature-icon {
      width: 46px;
      height: 46px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      background: var(--soft);
      color: var(--brand);
      font-weight: 950;
      margin-bottom: 18px;
    }

    .feature-card h3,
    .service-card h3,
    .media-card h3,
    .about-panel h3,
    .timeline-card h3,
    .news-title {
      font-size: 1.2rem;
      font-weight: 930;
      line-height: 1.28;
      letter-spacing: -.025em;
      margin-bottom: 10px;
    }

    .feature-card p,
    .service-card p,
    .media-card p,
    .timeline-card p {
      color: var(--muted);
      margin: 0;
    }

    .service-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 26px;
      align-items: start;
    }

    .service-aside {
      position: sticky;
      top: 100px;
      border-radius: var(--radius-xl);
      background: linear-gradient(180deg, var(--brand), #143a9a);
      color: #fff;
      padding: 30px;
      box-shadow: var(--shadow-lg);
    }

    .service-aside p {
      color: rgba(255,255,255,.78);
      margin-bottom: 22px;
    }

    .service-metrics {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .service-metric {
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.1);
      border-radius: 20px;
      padding: 15px;
    }

    .service-metric strong {
      display: block;
      font-size: 1.35rem;
      line-height: 1.1;
      margin-bottom: 5px;
    }

    .service-metric span {
      color: rgba(255,255,255,.74);
      font-size: .88rem;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .service-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 28px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }

    .service-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .about-layout {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 26px;
      align-items: stretch;
    }

    .about-panel {
      padding: 30px;
      border-radius: var(--radius-xl);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-md);
    }

    .about-panel.blue {
      background: linear-gradient(150deg, rgba(238,246,255,.98), #fff);
    }

    .check-list {
      display: grid;
      gap: 14px;
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: #405872;
    }

    .check-list i {
      width: 24px;
      height: 24px;
      flex: 0 0 auto;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: rgba(19, 164, 107, .12);
      color: var(--success);
      font-style: normal;
      font-weight: 950;
      font-size: .8rem;
      margin-top: 2px;
    }

    .category-lanes {
      display: grid;
      gap: 14px;
      margin-top: 16px;
    }

    .lane {
      padding: 17px;
      border: 1px solid var(--line);
      background: #fff;
      border-radius: 22px;
      transition: var(--ease);
    }

    .lane:hover {
      border-color: rgba(37, 99, 235, .25);
      transform: translateX(3px);
      box-shadow: var(--shadow-sm);
    }

    .lane strong {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      margin-bottom: 6px;
    }

    .lane p {
      margin: 0;
      color: var(--muted);
      font-size: .93rem;
    }

    .lane-count {
      color: var(--brand);
      background: var(--soft);
      border-radius: 999px;
      padding: 4px 9px;
      font-size: .78rem;
      white-space: nowrap;
    }

    .media-strip {
      display: flex;
      gap: 18px;
      overflow-x: auto;
      padding: 4px 4px 18px;
      scroll-snap-type: x mandatory;
      scrollbar-color: rgba(37, 99, 235, .32) transparent;
    }

    .media-card {
      flex: 0 0 330px;
      scroll-snap-align: start;
      min-height: 230px;
      border-radius: 30px;
      border: 1px solid var(--line);
      background: #fff;
      box-shadow: var(--shadow-sm);
      padding: 24px;
      transition: var(--ease);
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .media-type {
      display: inline-flex;
      border-radius: 999px;
      padding: 6px 10px;
      background: var(--soft);
      color: var(--brand);
      font-weight: 850;
      font-size: .82rem;
      margin-bottom: 18px;
    }

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

    .timeline::before {
      content: "";
      position: absolute;
      left: 8%;
      right: 8%;
      top: 31px;
      height: 2px;
      background: linear-gradient(90deg, rgba(37,99,235,.16), rgba(37,99,235,.44), rgba(37,99,235,.16));
    }

    .timeline-card {
      position: relative;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      border-radius: 26px;
      padding: 24px;
      z-index: 1;
    }

    .timeline-dot {
      width: 18px;
      height: 18px;
      border-radius: 999px;
      background: var(--brand);
      box-shadow: 0 0 0 8px var(--soft);
      margin-bottom: 24px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(310px, .75fr);
      gap: 24px;
      align-items: start;
    }

    .news-list,
    .recommend-panel {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
      padding: 10px;
    }

    .news-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px;
      border-radius: 24px;
      transition: var(--ease);
    }

    .news-item + .news-item {
      border-top: 1px solid rgba(217, 230, 245, .78);
      border-top-left-radius: 0;
      border-top-right-radius: 0;
    }

    .news-item:hover {
      background: var(--soft-2);
      transform: translateX(3px);
    }

    .news-date {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      display: grid;
      place-items: center;
      background: var(--soft);
      color: var(--brand);
      font-weight: 950;
      line-height: 1.1;
      text-align: center;
      font-size: .86rem;
    }

    .news-title {
      margin: 0 0 4px;
    }

    .news-title a:hover {
      color: var(--brand);
    }

    .news-summary {
      color: var(--muted);
      margin: 0;
      font-size: .94rem;
    }

    .arrow {
      color: var(--brand);
      font-weight: 950;
    }

    .recommend-panel {
      padding: 24px;
      position: sticky;
      top: 100px;
    }

    .recommend-panel h3 {
      font-weight: 930;
      letter-spacing: -.025em;
      margin-bottom: 16px;
    }

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

    .recommend-list li a {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 13px 0;
      color: #405872;
      border-bottom: 1px solid rgba(217, 230, 245, .78);
      font-weight: 750;
    }

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

    .recommend-list li a:hover {
      color: var(--brand);
      padding-left: 4px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 28px;
      align-items: start;
    }

    .faq-note {
      border-radius: var(--radius-xl);
      background: linear-gradient(180deg, #fff, var(--soft-2));
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      padding: 28px;
    }

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

    .accordion-item {
      border: 1px solid var(--line) !important;
      border-radius: 24px !important;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      background: #fff;
    }

    .accordion-button {
      padding: 19px 22px;
      font-weight: 900;
      color: var(--ink);
      background: #fff;
      border-radius: 24px !important;
      box-shadow: none !important;
    }

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

    .accordion-button:focus {
      box-shadow: 0 0 0 4px rgba(37, 99, 235, .1) !important;
    }

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

    .cta-section {
      padding: 72px 0 92px;
    }

    .cta-card {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
      border-radius: var(--radius-xl);
      padding: 34px;
      color: #fff;
      background:
        radial-gradient(circle at 12% 16%, rgba(255,255,255,.18), transparent 28%),
        linear-gradient(135deg, #123a9b, #2563eb);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .cta-card h2 {
      font-size: clamp(1.7rem, 2.5vw, 2.5rem);
      font-weight: 950;
      letter-spacing: -.045em;
      margin-bottom: 10px;
    }

    .cta-card p {
      color: rgba(255,255,255,.78);
      margin: 0;
      max-width: 720px;
    }

    .cta-form {
      display: flex;
      gap: 10px;
      min-width: 420px;
      padding: 8px;
      border-radius: 999px;
      background: rgba(255,255,255,.16);
      border: 1px solid rgba(255,255,255,.2);
    }

    .cta-form input {
      flex: 1;
      min-width: 0;
      border: 0;
      outline: none;
      border-radius: 999px;
      padding: 12px 16px;
      color: var(--ink);
      background: #fff;
    }

    .cta-form button {
      border: 0;
      white-space: nowrap;
    }

    .site-footer {
      background: #0d1b2d;
      color: rgba(255,255,255,.78);
      padding: 58px 0 96px;
      border-top: 1px solid rgba(255,255,255,.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 32px;
      align-items: start;
    }

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

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

    .footer-text {
      max-width: 520px;
      color: rgba(255,255,255,.66);
      margin: 0;
    }

    .footer-title {
      color: #fff;
      font-weight: 900;
      margin-bottom: 14px;
    }

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

    .footer-links a {
      color: rgba(255,255,255,.68);
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 3px;
    }

    .copyright {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.1);
      color: rgba(255,255,255,.54);
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      font-size: .92rem;
    }

    .fixed-cta {
      position: fixed;
      left: 50%;
      bottom: 16px;
      z-index: 1040;
      transform: translateX(-50%);
      width: min(980px, calc(100% - 28px));
      border-radius: 999px;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(217,230,245,.94);
      box-shadow: 0 20px 54px rgba(15, 44, 90, .18);
      padding: 10px 12px 10px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .fixed-cta strong {
      display: block;
      font-weight: 950;
      line-height: 1.2;
    }

    .fixed-cta span {
      display: block;
      color: var(--muted);
      font-size: .9rem;
    }

    .fixed-cta-actions {
      display: flex;
      gap: 10px;
      flex: 0 0 auto;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(100% - 32px, 960px);
      }

      .hero-grid,
      .app-grid,
      .service-wrap,
      .about-layout,
      .faq-wrap,
      .news-layout {
        grid-template-columns: 1fr;
      }

      .hero-visual-wrap {
        min-height: 460px;
      }

      .hero-visual {
        min-height: 450px;
        transform: none;
      }

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

      .service-aside,
      .recommend-panel {
        position: static;
      }

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

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

      .timeline::before {
        display: none;
      }

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

      .cta-form {
        min-width: 0;
        width: 100%;
      }

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

    @media (max-width: 768px) {
      body {
        padding-bottom: 118px;
      }

      .navbar-collapse {
        padding: 14px 0 6px;
      }

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

      .nav-link {
        border-radius: 16px;
      }

      .nav-search {
        width: 100%;
        margin: 8px 0;
      }

      .section {
        padding: 68px 0;
      }

      .hero {
        padding: 52px 0 70px;
      }

      .hero-grid {
        gap: 32px;
      }

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

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

      .hero-kpis,
      .service-metrics {
        grid-template-columns: 1fr;
      }

      .hero-visual-wrap {
        min-height: 520px;
        transform: none;
      }

      .cover-header {
        left: 18px;
        right: 18px;
        top: 18px;
      }

      .cover-stage {
        inset: 94px 18px 18px;
        grid-template-columns: 1fr;
      }

      .large-panel {
        min-height: 230px;
      }

      .feature-ribbon,
      .service-grid,
      .timeline {
        grid-template-columns: 1fr;
      }

      .app-shell,
      .about-panel,
      .service-aside,
      .cta-card {
        padding: 22px;
        border-radius: 28px;
      }

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

      .news-date {
        width: auto;
        height: auto;
        display: inline-flex;
        padding: 8px 12px;
      }

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

      .fixed-cta {
        border-radius: 24px;
        align-items: stretch;
        flex-direction: column;
        padding: 14px;
      }

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

      .fixed-cta-actions a {
        flex: 1;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(100% - 24px, 100%);
      }

      .brand-text {
        font-size: .98rem;
      }

      h1.hero-title {
        font-size: 2.18rem;
      }

      .hero-lead,
      .section-desc {
        font-size: 1rem;
      }

      .hero-visual-wrap {
        min-height: 570px;
      }

      .cover-header {
        align-items: flex-start;
        flex-direction: column;
      }

      .cover-stage {
        top: 138px;
      }

      .media-card {
        flex-basis: 282px;
      }

      .cta-form {
        border-radius: 24px;
        flex-direction: column;
      }

      .cta-form input,
      .cta-form button {
        width: 100%;
      }

      .copyright {
        flex-direction: column;
      }
    }

/* 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}