/* roulang page: index */
:root {
      --bg: #080b12;
      --bg-soft: #0e1420;
      --bg-card: rgba(18, 25, 39, 0.82);
      --bg-card-solid: #121927;
      --surface: #151d2d;
      --surface-2: #1b263a;
      --text: #eef4ff;
      --text-strong: #ffffff;
      --muted: #9aa8bd;
      --muted-2: #718096;
      --primary: #ff7a2f;
      --primary-dark: #d95712;
      --primary-soft: rgba(255, 122, 47, 0.15);
      --secondary: #28e0c8;
      --secondary-soft: rgba(40, 224, 200, 0.12);
      --warning: #ffd166;
      --danger: #ff5c7a;
      --success: #6ee7a8;
      --border: rgba(160, 174, 192, 0.18);
      --border-strong: rgba(255, 255, 255, 0.22);
      --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
      --shadow-md: 0 22px 60px rgba(0, 0, 0, 0.34);
      --shadow-glow: 0 0 42px rgba(255, 122, 47, 0.18);
      --radius-sm: 12px;
      --radius: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --container: 1180px;
      --nav-height: 74px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      background: var(--bg);
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: var(--font-sans);
      line-height: 1.72;
      color: var(--text);
      background:
        radial-gradient(circle at 15% 5%, rgba(255, 122, 47, 0.22), transparent 31%),
        radial-gradient(circle at 88% 12%, rgba(40, 224, 200, 0.16), transparent 28%),
        linear-gradient(180deg, #070a11 0%, #0c111b 42%, #090c13 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
      background-size: 46px 46px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,0.78), transparent 72%);
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(90deg, rgba(255,122,47,0.06), transparent 18%, transparent 82%, rgba(40,224,200,0.06));
      z-index: -1;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .22s ease, opacity .22s ease, transform .22s ease;
    }

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

    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(40, 224, 200, 0.24);
      outline-offset: 3px;
    }

    ::selection {
      color: #081018;
      background: var(--secondary);
    }

    .container {
      width: min(100% - 32px, var(--container));
      max-width: var(--container);
      margin-inline: auto;
      padding-inline: 0;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid rgba(255, 255, 255, 0.09);
      background: rgba(8, 11, 18, 0.86);
      backdrop-filter: blur(18px);
      box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
    }

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

    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 900;
      letter-spacing: -0.02em;
      color: var(--text-strong);
      white-space: nowrap;
    }

    .brand-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #10131b;
      background:
        linear-gradient(135deg, var(--primary), var(--warning) 45%, var(--secondary));
      box-shadow: 0 12px 28px rgba(255, 122, 47, 0.28);
      flex: 0 0 auto;
    }

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

    .brand-title {
      font-size: 17px;
      max-width: 260px;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-sub {
      margin-top: 3px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
      letter-spacing: .08em;
    }

    .navbar-toggler {
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 9px 11px;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text);
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 4px rgba(40, 224, 200, 0.13);
    }

    .navbar-toggler-icon {
      filter: invert(1) grayscale(1) brightness(1.8);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .main-nav .nav-link {
      color: var(--muted);
      border: 1px solid transparent;
      border-radius: 999px;
      padding: 9px 16px;
      font-weight: 800;
      line-height: 1;
    }

    .main-nav .nav-link:hover {
      color: var(--text-strong);
      background: rgba(255, 255, 255, 0.06);
      border-color: var(--border);
    }

    .main-nav .nav-link.active {
      color: #111620;
      background: var(--secondary);
      box-shadow: 0 10px 26px rgba(40, 224, 200, 0.18);
    }

    .nav-tools {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: 18px;
      padding-left: 18px;
      border-left: 1px solid var(--border);
      flex-wrap: wrap;
    }

    .notice-chip {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 11px;
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255, 255, 255, 0.045);
      border: 1px solid var(--border);
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .notice-chip i {
      color: var(--primary);
    }

    .notice-chip.verified i {
      color: var(--secondary);
    }

    .section {
      position: relative;
      padding: 82px 0;
    }

    .section.compact {
      padding: 56px 0;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      border: 1px solid var(--border);
      color: var(--secondary);
      background: var(--secondary-soft);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .02em;
      margin-bottom: 16px;
    }

    .section-title {
      margin: 0;
      color: var(--text-strong);
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: -0.04em;
    }

    .section-desc {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 16px;
      max-width: 760px;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 32px;
    }

    .section-head .section-desc {
      max-width: 540px;
    }

    .btn {
      border: 0;
      border-radius: 999px;
      padding: 12px 20px;
      font-weight: 900;
      letter-spacing: -0.01em;
      transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
    }

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

    .btn:active {
      transform: translateY(0) scale(.99);
    }

    .btn-primary-custom {
      color: #111620;
      background: linear-gradient(135deg, var(--primary), var(--warning));
      box-shadow: 0 16px 34px rgba(255, 122, 47, 0.24);
    }

    .btn-primary-custom:hover {
      color: #070a11;
      box-shadow: 0 18px 42px rgba(255, 122, 47, 0.32);
    }

    .btn-secondary-custom {
      color: #071018;
      background: linear-gradient(135deg, var(--secondary), #83f7e8);
      box-shadow: 0 16px 34px rgba(40, 224, 200, 0.2);
    }

    .btn-secondary-custom:hover {
      color: #060b12;
      box-shadow: 0 18px 42px rgba(40, 224, 200, 0.28);
    }

    .btn-ghost {
      color: var(--text);
      border: 1px solid var(--border-strong);
      background: rgba(255, 255, 255, 0.045);
    }

    .btn-ghost:hover {
      color: var(--text-strong);
      border-color: rgba(40, 224, 200, 0.55);
      background: rgba(40, 224, 200, 0.08);
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      padding: 7px 11px;
      font-size: 12px;
      font-weight: 900;
      color: var(--text);
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.052);
    }

    .badge-soft.orange {
      color: #ffd9c6;
      background: var(--primary-soft);
      border-color: rgba(255, 122, 47, 0.32);
    }

    .badge-soft.green {
      color: #c7fff5;
      background: var(--secondary-soft);
      border-color: rgba(40, 224, 200, 0.3);
    }

    .badge-soft.yellow {
      color: #fff1ba;
      background: rgba(255, 209, 102, 0.12);
      border-color: rgba(255, 209, 102, 0.28);
    }

    .hero {
      padding: 58px 0 46px;
    }

    .hero-application {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255,122,47,0.16), transparent 32%),
        linear-gradient(90deg, rgba(18, 25, 39, 0.95), rgba(10, 16, 27, 0.92)),
        radial-gradient(circle at 84% 22%, rgba(40,224,200,0.2), transparent 28%);
      box-shadow: var(--shadow-md), var(--shadow-glow);
      padding: clamp(26px, 5vw, 52px);
    }

    .hero-application::before {
      content: "";
      position: absolute;
      width: 360px;
      height: 360px;
      right: -150px;
      top: -120px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(40,224,200,0.35), transparent 68%);
      filter: blur(2px);
    }

    .hero-application::after {
      content: "";
      position: absolute;
      inset: 18px;
      border-radius: calc(var(--radius-xl) - 14px);
      border: 1px solid rgba(255, 255, 255, 0.07);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.22fr) minmax(300px, 0.78fr);
      gap: 34px;
      align-items: stretch;
    }

    .hero h1 {
      margin: 16px 0 0;
      color: var(--text-strong);
      font-size: clamp(34px, 6vw, 68px);
      line-height: .98;
      letter-spacing: -0.065em;
      font-weight: 950;
      max-width: 800px;
    }

    .hero-intro {
      margin: 22px 0 0;
      max-width: 790px;
      color: #c5d0df;
      font-size: clamp(16px, 2vw, 19px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .hero-benefits {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
      padding: 0;
      list-style: none;
    }

    .hero-benefits li {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #dfe8f6;
      padding: 9px 12px;
      border: 1px solid rgba(255,255,255,0.13);
      border-radius: 999px;
      background: rgba(255,255,255,0.05);
      font-weight: 750;
      font-size: 13px;
    }

    .hero-benefits i {
      color: var(--secondary);
    }

    .application-card {
      border-radius: var(--radius-lg);
      padding: 24px;
      background: rgba(7, 12, 20, 0.58);
      border: 1px solid rgba(255, 255, 255, 0.13);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
      backdrop-filter: blur(14px);
    }

    .application-card h2 {
      margin: 0;
      color: var(--text-strong);
      font-size: 22px;
      font-weight: 950;
      letter-spacing: -0.03em;
    }

    .application-card p {
      margin: 10px 0 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .apply-form {
      display: grid;
      gap: 12px;
    }

    .form-control,
    .form-select {
      border: 1px solid var(--border);
      border-radius: 16px;
      color: var(--text);
      background: rgba(255, 255, 255, 0.06);
      padding: 13px 14px;
      min-height: 48px;
    }

    .form-control::placeholder {
      color: #77869a;
    }

    .form-control:focus,
    .form-select:focus {
      color: var(--text);
      background: rgba(255,255,255,0.08);
      border-color: rgba(40, 224, 200, 0.55);
      box-shadow: 0 0 0 4px rgba(40, 224, 200, 0.12);
    }

    .form-note {
      display: flex;
      gap: 9px;
      align-items: flex-start;
      color: var(--muted);
      font-size: 12px;
      margin-top: 10px;
    }

    .form-note i {
      color: var(--warning);
      margin-top: 4px;
    }

    .mini-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 24px;
    }

    .mini-stat {
      padding: 15px;
      border: 1px solid rgba(255,255,255,0.11);
      border-radius: 18px;
      background: rgba(255,255,255,0.045);
    }

    .mini-stat strong {
      display: block;
      color: var(--text-strong);
      font-size: 23px;
      line-height: 1;
      letter-spacing: -0.04em;
    }

    .mini-stat span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      margin-top: 7px;
    }

    .calendar-shell {
      display: grid;
      grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
      gap: 24px;
      align-items: stretch;
    }

    .calendar-panel,
    .feature-panel,
    .data-panel,
    .guide-panel,
    .news-panel,
    .quote-panel,
    .faq-panel,
    .contact-panel {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--bg-card);
      box-shadow: var(--shadow-sm);
      backdrop-filter: blur(14px);
    }

    .calendar-panel {
      padding: 26px;
      overflow: hidden;
      position: relative;
    }

    .calendar-panel::after {
      content: "";
      position: absolute;
      width: 160px;
      height: 160px;
      right: -50px;
      bottom: -50px;
      border-radius: 50%;
      background: rgba(255, 122, 47, 0.14);
      filter: blur(8px);
    }

    .calendar-panel h3 {
      position: relative;
      z-index: 1;
      margin: 0;
      font-weight: 950;
      color: var(--text-strong);
      letter-spacing: -0.03em;
    }

    .calendar-panel p {
      position: relative;
      z-index: 1;
      margin: 12px 0 0;
      color: var(--muted);
    }

    .calendar-week {
      position: relative;
      z-index: 1;
      display: grid;
      gap: 10px;
      margin-top: 22px;
    }

    .calendar-day {
      display: grid;
      grid-template-columns: 74px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.045);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: transform .22s ease, border-color .22s ease, background .22s ease;
    }

    .calendar-day:hover {
      transform: translateX(4px);
      border-color: rgba(40, 224, 200, 0.35);
      background: rgba(40, 224, 200, 0.06);
    }

    .day-code {
      color: var(--secondary);
      font-weight: 950;
      letter-spacing: .02em;
    }

    .day-title {
      color: var(--text);
      font-weight: 850;
    }

    .day-tag {
      padding: 5px 9px;
      border-radius: 999px;
      background: rgba(255, 122, 47, 0.13);
      color: #ffd8c3;
      font-size: 12px;
      font-weight: 900;
      white-space: nowrap;
    }

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

    .release-card {
      min-height: 180px;
      padding: 26px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background:
        linear-gradient(135deg, rgba(40,224,200,0.12), transparent 45%),
        rgba(255,255,255,0.045);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      position: relative;
    }

    .release-card::before {
      content: "";
      position: absolute;
      inset: auto -40px -70px auto;
      width: 170px;
      height: 170px;
      border-radius: 50%;
      border: 24px solid rgba(40,224,200,0.08);
    }

    .release-card h3 {
      margin: 0;
      font-weight: 950;
      color: var(--text-strong);
      letter-spacing: -0.03em;
      position: relative;
      z-index: 1;
    }

    .release-card p {
      margin: 12px 0 0;
      color: var(--muted);
      position: relative;
      z-index: 1;
    }

    .release-row {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 18px;
      position: relative;
      z-index: 1;
    }

    .topic-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      grid-template-rows: auto auto;
      gap: 18px;
    }

    .topic-card {
      position: relative;
      min-height: 210px;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 26px;
      background:
        linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035)),
        var(--bg-card-solid);
      box-shadow: var(--shadow-sm);
      transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
    }

    .topic-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 122, 47, 0.38);
      box-shadow: 0 26px 62px rgba(0,0,0,0.32);
    }

    .topic-card.large {
      grid-row: span 2;
      min-height: 438px;
      background:
        radial-gradient(circle at 85% 22%, rgba(255,122,47,0.23), transparent 26%),
        linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.035)),
        var(--bg-card-solid);
    }

    .topic-card h3 {
      margin: 18px 0 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.03em;
      font-size: 24px;
    }

    .topic-card p {
      margin: 12px 0 0;
      color: var(--muted);
      max-width: 520px;
    }

    .topic-card .topic-icon {
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #10151f;
      background: linear-gradient(135deg, var(--secondary), #eafffb);
      box-shadow: 0 14px 32px rgba(40,224,200,0.18);
    }

    .topic-card.large .topic-icon {
      background: linear-gradient(135deg, var(--primary), var(--warning));
      box-shadow: 0 14px 32px rgba(255,122,47,0.22);
    }

    .topic-list {
      margin: 28px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .topic-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #d7e1ee;
      font-weight: 760;
    }

    .topic-list i {
      color: var(--secondary);
      margin-top: 5px;
    }

    .dashboard {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(110deg, rgba(255,122,47,0.12), transparent 28%),
        linear-gradient(180deg, rgba(17,25,39,0.94), rgba(11,16,25,0.94));
      box-shadow: var(--shadow-md);
      padding: 28px;
    }

    .dashboard::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
      background-size: 72px 100%;
      opacity: .5;
      pointer-events: none;
    }

    .dashboard-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
    }

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

    .metric-card {
      padding: 20px;
      min-height: 152px;
      border-radius: 22px;
      border: 1px solid rgba(255,255,255,0.1);
      background: rgba(255,255,255,0.05);
      transition: transform .22s ease, background .22s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      background: rgba(255,255,255,0.075);
    }

    .metric-card strong {
      display: block;
      color: var(--text-strong);
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1;
      font-weight: 950;
      letter-spacing: -0.05em;
    }

    .metric-card span {
      display: block;
      margin-top: 10px;
      color: var(--muted);
      font-size: 14px;
    }

    .compare-panel {
      padding: 22px;
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(5, 9, 16, 0.44);
    }

    .compare-panel h3 {
      margin: 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.03em;
    }

    .compare-row {
      display: grid;
      grid-template-columns: 108px 1fr 1fr;
      gap: 10px;
      align-items: center;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }

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

    .compare-row.header {
      color: var(--muted);
      font-size: 13px;
      font-weight: 900;
      border-bottom-color: rgba(255,255,255,0.13);
    }

    .compare-label {
      color: #dfe8f5;
      font-weight: 900;
    }

    .compare-good,
    .compare-bad {
      min-height: 42px;
      border-radius: 14px;
      padding: 10px 12px;
      font-size: 13px;
      font-weight: 750;
    }

    .compare-good {
      color: #d7fff7;
      background: rgba(40,224,200,0.1);
      border: 1px solid rgba(40,224,200,0.18);
    }

    .compare-bad {
      color: #ffccd6;
      background: rgba(255,92,122,0.1);
      border: 1px solid rgba(255,92,122,0.18);
    }

    .trust-strip {
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.035);
      padding: 22px 0;
    }

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

    .trust-item {
      display: flex;
      gap: 13px;
      align-items: center;
      padding: 16px;
      border-radius: 20px;
      border: 1px solid rgba(255,255,255,0.09);
      background: rgba(14,20,32,0.72);
      transition: transform .22s ease, border-color .22s ease;
    }

    .trust-item:hover {
      transform: translateY(-3px);
      border-color: rgba(40,224,200,0.3);
    }

    .trust-icon {
      width: 42px;
      height: 42px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #111620;
      background: linear-gradient(135deg, var(--secondary), #e6fffb);
    }

    .trust-item strong {
      display: block;
      color: var(--text-strong);
      line-height: 1.25;
    }

    .trust-item span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      margin-top: 3px;
      line-height: 1.45;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
      gap: 22px;
    }

    .news-panel {
      padding: 8px;
    }

    .news-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .news-item + .news-item {
      border-top: 1px solid rgba(255,255,255,0.08);
    }

    .news-link {
      display: grid;
      grid-template-columns: 94px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 20px;
      border-radius: 18px;
      transition: background .22s ease, transform .22s ease;
    }

    .news-link:hover {
      background: rgba(255,255,255,0.055);
      transform: translateX(3px);
    }

    .news-date {
      color: var(--secondary);
      font-weight: 950;
      font-size: 13px;
      letter-spacing: .04em;
    }

    .news-title {
      color: var(--text-strong);
      font-size: 17px;
      font-weight: 900;
      line-height: 1.38;
    }

    .news-summary {
      display: block;
      margin-top: 6px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 500;
    }

    .news-arrow {
      color: var(--muted-2);
      transition: transform .22s ease, color .22s ease;
    }

    .news-link:hover .news-arrow {
      color: var(--secondary);
      transform: translateX(4px);
    }

    .recommend-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background:
        linear-gradient(145deg, rgba(255,122,47,0.12), transparent 45%),
        var(--bg-card);
      box-shadow: var(--shadow-sm);
    }

    .recommend-panel h3 {
      margin: 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.03em;
    }

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

    .recommend-list li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px dashed rgba(255,255,255,0.12);
      color: #dbe5f3;
      font-weight: 760;
    }

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

    .recommend-list span {
      color: var(--muted);
      font-size: 12px;
      white-space: nowrap;
    }

    .quote-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
    }

    .quote-lead {
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 122, 47, 0.25);
      background:
        radial-gradient(circle at 20% 20%, rgba(255,122,47,0.18), transparent 34%),
        var(--bg-card);
      box-shadow: var(--shadow-sm);
    }

    .quote-lead blockquote {
      margin: 0;
      color: var(--text-strong);
      font-size: 24px;
      line-height: 1.45;
      font-weight: 950;
      letter-spacing: -0.03em;
    }

    .quote-lead p {
      margin: 18px 0 0;
      color: var(--muted);
    }

    .quote-cards {
      display: grid;
      gap: 14px;
    }

    .quote-card {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: start;
      padding: 20px;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: rgba(255,255,255,0.045);
      transition: transform .22s ease, border-color .22s ease;
    }

    .quote-card:hover {
      transform: translateY(-4px);
      border-color: rgba(40,224,200,0.34);
    }

    .avatar {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #111620;
      background: linear-gradient(135deg, var(--primary), var(--warning));
      font-weight: 950;
    }

    .quote-card strong {
      color: var(--text-strong);
      display: block;
      line-height: 1.3;
    }

    .quote-card span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 14px;
    }

    .guide-shell {
      display: grid;
      grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr);
      gap: 26px;
    }

    .guide-panel {
      padding: 26px;
      position: sticky;
      top: 98px;
      align-self: start;
    }

    .guide-panel h3 {
      margin: 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.03em;
    }

    .guide-panel p {
      margin: 14px 0 0;
      color: var(--muted);
    }

    .guide-steps {
      display: grid;
      gap: 16px;
      counter-reset: step;
    }

    .step-card {
      position: relative;
      display: grid;
      grid-template-columns: 62px 1fr;
      gap: 18px;
      padding: 22px;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,0.047);
      box-shadow: var(--shadow-sm);
      transition: transform .22s ease, border-color .22s ease;
      counter-increment: step;
    }

    .step-card:hover {
      transform: translateY(-5px);
      border-color: rgba(255,122,47,0.35);
    }

    .step-num {
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #111620;
      background: linear-gradient(135deg, var(--primary), var(--warning));
      font-size: 20px;
      font-weight: 950;
    }

    .step-card h3 {
      margin: 0;
      color: var(--text-strong);
      font-size: 20px;
      font-weight: 950;
      letter-spacing: -0.02em;
    }

    .step-card p {
      margin: 8px 0 0;
      color: var(--muted);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
      gap: 24px;
      align-items: start;
    }

    .faq-aside {
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      background:
        linear-gradient(145deg, rgba(40,224,200,0.12), transparent 42%),
        var(--bg-card);
      box-shadow: var(--shadow-sm);
    }

    .faq-aside h2 {
      margin: 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.04em;
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.12;
    }

    .faq-aside p {
      margin: 16px 0 0;
      color: var(--muted);
    }

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

    .accordion-item {
      border: 1px solid var(--border);
      border-radius: 18px !important;
      overflow: hidden;
      background: rgba(255,255,255,0.045);
      color: var(--text);
    }

    .accordion-button {
      color: var(--text-strong);
      background: rgba(255,255,255,0.03);
      font-weight: 950;
      padding: 18px 20px;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      color: var(--text-strong);
      background: rgba(40,224,200,0.08);
      box-shadow: none;
    }

    .accordion-button::after {
      filter: invert(1) grayscale(1) brightness(2);
    }

    .accordion-body {
      color: var(--muted);
      padding: 0 20px 20px;
      background: rgba(255,255,255,0.02);
    }

    .cta-band {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-xl);
      border: 1px solid rgba(255,255,255,0.14);
      background:
        radial-gradient(circle at 12% 25%, rgba(255,122,47,0.26), transparent 27%),
        radial-gradient(circle at 84% 12%, rgba(40,224,200,0.2), transparent 25%),
        linear-gradient(135deg, rgba(21,29,45,0.98), rgba(9,13,21,0.98));
      box-shadow: var(--shadow-md);
      padding: clamp(26px, 5vw, 42px);
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 380px;
      gap: 28px;
      align-items: center;
    }

    .cta-band h2 {
      margin: 0;
      color: var(--text-strong);
      font-weight: 950;
      letter-spacing: -0.045em;
      font-size: clamp(28px, 4vw, 48px);
      line-height: 1.08;
    }

    .cta-band p {
      margin: 16px 0 0;
      color: #c8d3e2;
      max-width: 720px;
    }

    .contact-panel {
      padding: 22px;
      background: rgba(7, 12, 20, 0.58);
    }

    .contact-form {
      display: grid;
      gap: 12px;
    }

    .submit-message {
      display: none;
      margin-top: 12px;
      padding: 12px 14px;
      border-radius: 16px;
      color: #d7fff7;
      background: rgba(40,224,200,0.1);
      border: 1px solid rgba(40,224,200,0.22);
      font-size: 14px;
    }

    .site-footer {
      padding: 44px 0 30px;
      color: var(--muted);
      background: rgba(4, 7, 12, 0.72);
      border-top: 1px solid var(--border);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: start;
    }

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

    .footer-brand strong {
      display: block;
      color: var(--text-strong);
      font-size: 18px;
      font-weight: 950;
    }

    .footer-brand span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 13px;
    }

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

    .footer-links a,
    .footer-links span {
      padding: 8px 11px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,0.035);
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-links a:hover {
      color: var(--secondary);
      border-color: rgba(40,224,200,0.32);
    }

    .copyright {
      margin-top: 28px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,0.08);
      display: flex;
      gap: 14px;
      justify-content: space-between;
      flex-wrap: wrap;
      font-size: 13px;
    }

    .fixed-cta {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 13px 17px;
      border-radius: 999px;
      color: #111620;
      background: linear-gradient(135deg, var(--primary), var(--warning));
      box-shadow: 0 18px 42px rgba(0,0,0,0.34), 0 0 24px rgba(255,122,47,0.18);
      font-weight: 950;
    }

    .fixed-cta:hover {
      color: #071018;
      transform: translateY(-3px);
    }

    @media (max-width: 1024px) {
      :root {
        --nav-height: 68px;
      }

      .hero-grid,
      .calendar-shell,
      .dashboard-grid,
      .quote-grid,
      .guide-shell,
      .faq-grid,
      .cta-grid {
        grid-template-columns: 1fr;
      }

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

      .topic-card.large {
        grid-column: 1 / -1;
        min-height: 300px;
      }

      .guide-panel {
        position: static;
      }

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

      .nav-tools {
        margin-left: 0;
        padding-left: 0;
        border-left: 0;
        margin-top: 12px;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 64px 0;
      }

      .section.compact {
        padding: 42px 0;
      }

      .section-head {
        display: block;
      }

      .section-head .section-desc {
        max-width: none;
      }

      .hero {
        padding-top: 34px;
      }

      .hero-application {
        border-radius: 26px;
        padding: 24px;
      }

      .hero h1 {
        letter-spacing: -0.045em;
      }

      .mini-stats,
      .metric-list,
      .trust-grid,
      .news-layout {
        grid-template-columns: 1fr;
      }

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

      .calendar-day {
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .compare-row {
        grid-template-columns: 1fr;
        padding: 16px 0;
      }

      .compare-row.header {
        display: none;
      }

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

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

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

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

      .fixed-cta {
        right: 14px;
        left: 14px;
        justify-content: center;
      }
    }

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

      .brand-title {
        max-width: 190px;
        font-size: 15px;
      }

      .brand-sub {
        display: none;
      }

      .hero-actions .btn,
      .cta-band .btn {
        width: 100%;
      }

      .application-card,
      .calendar-panel,
      .release-card,
      .topic-card,
      .dashboard,
      .recommend-panel,
      .quote-lead,
      .faq-aside,
      .cta-band {
        padding: 20px;
      }

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

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

      .trust-item {
        align-items: flex-start;
      }

      .footer-brand {
        align-items: flex-start;
      }
    }

/* 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}