/* roulang page: index */
:root {
      --primary: #5b5cf6;
      --primary-dark: #4444c7;
      --primary-soft: #ececff;
      --secondary: #19b8a8;
      --accent: #ffb547;
      --ink: #101828;
      --text: #27364a;
      --muted: #667085;
      --weak: #98a2b3;
      --line: #e6e9f2;
      --bg: #f6f8fc;
      --panel: #ffffff;
      --panel-soft: #fbfcff;
      --dark: #101323;
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 30px;
      --shadow-sm: 0 8px 22px rgba(16, 24, 40, .06);
      --shadow: 0 18px 55px rgba(24, 32, 56, .12);
      --shadow-hover: 0 22px 65px rgba(24, 32, 56, .16);
      --container: 1160px;
      --ease: all .25s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 0%, rgba(91, 92, 246, .16), transparent 32%),
        radial-gradient(circle at 90% 8%, rgba(25, 184, 168, .12), transparent 34%),
        linear-gradient(180deg, #fbfcff 0%, var(--bg) 48%, #ffffff 100%);
      line-height: 1.75;
      font-size: 16px;
      text-rendering: optimizeLegibility;
    }

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

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

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

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

    button {
      border: 0;
    }

    ::selection {
      background: rgba(91, 92, 246, .18);
      color: var(--ink);
    }

    .container {
      width: min(100% - 32px, var(--container));
      max-width: var(--container);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: rgba(255, 255, 255, .82);
      border-bottom: 1px solid rgba(230, 233, 242, .82);
    }

    .navbar-shell {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -.03em;
      font-size: 22px;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .24), transparent 46%),
        linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 12px 28px rgba(91, 92, 246, .25);
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 15px;
      font-weight: 900;
      letter-spacing: -.04em;
    }

    .brand-logo:hover {
      color: var(--ink);
      transform: translateY(-1px);
    }

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

    .btn-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      font-weight: 800;
      letter-spacing: -.01em;
      transition: var(--ease);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-custom:focus-visible,
    .form-control:focus,
    .form-select:focus,
    .accordion-button:focus {
      outline: 3px solid rgba(91, 92, 246, .22);
      outline-offset: 2px;
      box-shadow: none;
      border-color: rgba(91, 92, 246, .45);
    }

    .btn-primary-custom {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #7475ff);
      box-shadow: 0 12px 28px rgba(91, 92, 246, .28);
    }

    .btn-primary-custom:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(91, 92, 246, .34);
    }

    .btn-secondary-custom {
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-color: rgba(91, 92, 246, .14);
    }

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

    .btn-ghost-custom {
      color: var(--text);
      background: rgba(255, 255, 255, .82);
      border-color: var(--line);
    }

    .btn-ghost-custom:hover {
      color: var(--primary-dark);
      border-color: rgba(91, 92, 246, .28);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    main {
      overflow: hidden;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(91, 92, 246, .09);
      color: var(--primary-dark);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 16px;
    }

    .section-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--secondary);
      box-shadow: 0 0 0 5px rgba(25, 184, 168, .12);
    }

    .section-title {
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.045em;
      line-height: 1.18;
      margin: 0;
      font-size: clamp(30px, 4vw, 46px);
    }

    .section-desc {
      margin: 16px 0 0;
      color: var(--muted);
      font-size: 17px;
      max-width: 760px;
    }

    .hero-section {
      padding: 52px 0 68px;
    }

    .hero-banner {
      position: relative;
      overflow: hidden;
      border-radius: 36px;
      background:
        radial-gradient(circle at 18% 18%, rgba(255, 255, 255, .28), transparent 23%),
        radial-gradient(circle at 86% 10%, rgba(25, 184, 168, .28), transparent 28%),
        linear-gradient(135deg, #171a37 0%, #25266d 48%, #5b5cf6 100%);
      box-shadow: var(--shadow);
      color: #fff;
      padding: clamp(30px, 6vw, 66px);
      min-height: 520px;
    }

    .hero-banner::after {
      content: "";
      position: absolute;
      inset: auto -120px -170px auto;
      width: 460px;
      height: 460px;
      border-radius: 50%;
      background: rgba(255, 181, 71, .2);
      filter: blur(2px);
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(320px, .72fr);
      gap: 36px;
      align-items: stretch;
    }

    .hero-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .hero-badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .13);
      border: 1px solid rgba(255, 255, 255, .18);
      color: rgba(255, 255, 255, .9);
      font-size: 14px;
      font-weight: 700;
    }

    .badge-soft .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #59f0d4;
      box-shadow: 0 0 0 5px rgba(89, 240, 212, .12);
    }

    .hero-title {
      margin: 0;
      color: #fff;
      font-size: clamp(38px, 7vw, 72px);
      line-height: 1.05;
      letter-spacing: -.06em;
      font-weight: 950;
      max-width: 820px;
    }

    .hero-intro {
      margin: 22px 0 0;
      max-width: 720px;
      color: rgba(255, 255, 255, .78);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
      align-items: center;
    }

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 24px;
      padding: 0;
      list-style: none;
      color: rgba(255, 255, 255, .78);
      font-size: 14px;
    }

    .hero-note li {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .hero-note li::before {
      content: "✓";
      color: #74f0d9;
      font-weight: 900;
    }

    .invite-card {
      border-radius: 28px;
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .18);
      backdrop-filter: blur(20px);
      padding: 24px;
      align-self: center;
      box-shadow: 0 16px 55px rgba(0, 0, 0, .12);
    }

    .invite-card-header {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: flex-start;
      margin-bottom: 18px;
    }

    .invite-card h2 {
      font-size: 22px;
      line-height: 1.35;
      color: #fff;
      margin: 0;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .invite-tag {
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(255, 181, 71, .18);
      color: #ffe3ab;
      font-weight: 800;
      font-size: 13px;
      white-space: nowrap;
    }

    .reward-list {
      display: grid;
      gap: 12px;
      padding: 0;
      list-style: none;
      margin: 0 0 22px;
    }

    .reward-list li {
      display: flex;
      gap: 12px;
      padding: 13px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .1);
      color: rgba(255, 255, 255, .82);
      font-size: 15px;
      border: 1px solid rgba(255, 255, 255, .1);
    }

    .reward-num {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      background: rgba(89, 240, 212, .18);
      color: #80ffe8;
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      font-weight: 900;
    }

    .progress-wrap {
      margin-top: 18px;
    }

    .progress-meta {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: rgba(255, 255, 255, .78);
      font-size: 14px;
      margin-bottom: 10px;
    }

    .custom-progress {
      height: 14px;
      padding: 3px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, .12);
    }

    .custom-progress-bar {
      height: 100%;
      width: 68%;
      border-radius: 999px;
      background: linear-gradient(90deg, #59f0d4, #ffcf6e);
      box-shadow: 0 8px 20px rgba(89, 240, 212, .2);
    }

    .invite-code {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 18px;
      padding: 12px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .12);
      border: 1px dashed rgba(255, 255, 255, .28);
    }

    .invite-code strong {
      color: #fff;
      letter-spacing: .08em;
    }

    .copy-tip {
      min-height: 24px;
      color: #8ff7e4;
      font-size: 14px;
      margin-top: 12px;
    }

    .metric-section {
      padding-top: 34px;
    }

    .metric-board {
      display: grid;
      grid-template-columns: 1.25fr repeat(3, 1fr);
      gap: 16px;
      margin-top: 28px;
    }

    .metric-card {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
      min-height: 154px;
      position: relative;
      overflow: hidden;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(91, 92, 246, .22);
    }

    .metric-card.featured {
      background: linear-gradient(135deg, #ffffff 0%, #f0f1ff 100%);
    }

    .metric-label {
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 10px;
    }

    .metric-value {
      color: var(--ink);
      font-weight: 950;
      letter-spacing: -.05em;
      line-height: 1;
      font-size: clamp(34px, 5vw, 54px);
      margin-bottom: 12px;
    }

    .metric-value small {
      font-size: 18px;
      color: var(--primary);
      letter-spacing: 0;
    }

    .metric-card p {
      color: var(--muted);
      margin: 0;
      font-size: 15px;
      line-height: 1.65;
    }

    .status-pill {
      position: absolute;
      right: 18px;
      top: 18px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(25, 184, 168, .1);
      color: #0e8c80;
      font-size: 13px;
      font-weight: 900;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 28px;
      align-items: start;
      margin-top: 34px;
    }

    .feature-aside {
      position: sticky;
      top: 102px;
      background: var(--dark);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .feature-aside::after {
      content: "";
      position: absolute;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      right: -55px;
      bottom: -55px;
      background: rgba(91, 92, 246, .44);
    }

    .feature-aside h3 {
      font-size: 26px;
      font-weight: 900;
      letter-spacing: -.04em;
      line-height: 1.25;
      margin: 0 0 14px;
      position: relative;
      z-index: 1;
    }

    .feature-aside p {
      color: rgba(255, 255, 255, .72);
      margin: 0;
      position: relative;
      z-index: 1;
    }

    .feature-index {
      margin: 24px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
      position: relative;
      z-index: 1;
    }

    .feature-index li {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 14px;
      border-radius: 14px;
      background: rgba(255, 255, 255, .08);
      color: rgba(255, 255, 255, .86);
      font-weight: 700;
    }

    .feature-index span {
      color: #82f1df;
      font-size: 13px;
    }

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

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

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(91, 92, 246, .2);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--primary-soft), #e9fffb);
      color: var(--primary-dark);
      display: grid;
      place-items: center;
      font-weight: 950;
      margin-bottom: 16px;
    }

    .service-card h3 {
      margin: 0 0 10px;
      font-size: 20px;
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .service-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .compare-section {
      background: linear-gradient(180deg, transparent 0%, #fff 50%, transparent 100%);
    }

    .compare-panel {
      margin-top: 30px;
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 14px;
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .compare-row {
      display: grid;
      grid-template-columns: .8fr 1fr 1fr;
      gap: 0;
      border-bottom: 1px solid var(--line);
    }

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

    .compare-cell {
      padding: 20px;
      min-height: 76px;
      display: flex;
      align-items: center;
      color: var(--muted);
      font-weight: 650;
    }

    .compare-head .compare-cell {
      background: #f7f8ff;
      color: var(--ink);
      font-weight: 900;
    }

    .compare-cell.good {
      color: #0f766e;
      background: rgba(25, 184, 168, .07);
    }

    .compare-cell.warn {
      color: #8a5a00;
      background: rgba(255, 181, 71, .08);
    }

    .stage-section {
      padding-top: 70px;
    }

    .product-stage {
      margin-top: 32px;
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 24px;
      align-items: center;
    }

    .screen-frame {
      border-radius: 32px;
      background: #111428;
      padding: 16px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(255, 255, 255, .14);
    }

    .screen-top {
      height: 42px;
      border-radius: 20px 20px 0 0;
      background: #1b1f3a;
      display: flex;
      align-items: center;
      padding: 0 16px;
      gap: 8px;
    }

    .screen-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ff6b6b;
    }

    .screen-dot:nth-child(2) {
      background: #ffcf6e;
    }

    .screen-dot:nth-child(3) {
      background: #59f0d4;
    }

    .screen-body {
      background: linear-gradient(180deg, #f7f8ff, #ffffff);
      border-radius: 0 0 22px 22px;
      padding: 22px;
      min-height: 360px;
      display: grid;
      gap: 16px;
    }

    .screen-search {
      display: flex;
      align-items: center;
      gap: 10px;
      border-radius: 16px;
      border: 1px solid var(--line);
      background: #fff;
      padding: 12px 14px;
      color: var(--weak);
      font-weight: 700;
    }

    .screen-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }

    .screen-block {
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--line);
      padding: 14px;
      min-height: 120px;
    }

    .screen-block strong {
      display: block;
      color: var(--ink);
      margin-bottom: 8px;
      font-size: 14px;
    }

    .screen-line {
      height: 8px;
      border-radius: 999px;
      background: #e8ebf5;
      margin: 9px 0;
    }

    .screen-line.short {
      width: 58%;
      background: rgba(91, 92, 246, .18);
    }

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

    .stage-points li {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 18px;
      display: flex;
      gap: 14px;
      align-items: flex-start;
      box-shadow: var(--shadow-sm);
    }

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

    .stage-points strong {
      display: block;
      color: var(--ink);
      margin-bottom: 3px;
      font-weight: 900;
    }

    .stage-points span {
      color: var(--muted);
      font-size: 15px;
    }

    .changelog-wrap {
      margin-top: 30px;
      display: grid;
      grid-template-columns: 1fr .8fr;
      gap: 22px;
    }

    .change-list {
      background: var(--panel);
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      padding: 10px;
    }

    .change-item {
      display: grid;
      grid-template-columns: 130px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 18px;
      border-radius: 20px;
      transition: var(--ease);
    }

    .change-item + .change-item {
      border-top: 1px solid var(--line);
    }

    .change-item:hover {
      background: #f8f9ff;
    }

    .change-time {
      color: var(--primary-dark);
      font-weight: 900;
    }

    .change-title {
      margin: 0 0 4px;
      color: var(--ink);
      font-weight: 900;
    }

    .change-text {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .change-status {
      padding: 6px 10px;
      border-radius: 999px;
      color: #0f766e;
      background: rgba(25, 184, 168, .1);
      font-weight: 900;
      font-size: 13px;
      white-space: nowrap;
    }

    .latest-panel {
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, #161a33, #25266d);
      color: #fff;
      padding: 26px;
      box-shadow: var(--shadow);
    }

    .latest-panel h3 {
      margin: 0 0 16px;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .latest-kpi {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .latest-kpi div {
      border-radius: 18px;
      padding: 16px;
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .1);
    }

    .latest-kpi strong {
      display: block;
      color: #74f0d9;
      font-size: 24px;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .latest-kpi span {
      color: rgba(255, 255, 255, .72);
      font-size: 14px;
    }

    .testimonial-section {
      background:
        radial-gradient(circle at 12% 20%, rgba(91, 92, 246, .09), transparent 28%),
        linear-gradient(180deg, #fff, #f7f8fc);
    }

    .testimonial-wall {
      margin-top: 34px;
      column-count: 3;
      column-gap: 18px;
    }

    .quote-card {
      break-inside: avoid;
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
      margin-bottom: 18px;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }

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

    .quote-card p {
      margin: 0 0 16px;
      color: var(--text);
    }

    .quote-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      font-weight: 900;
    }

    .quote-user strong {
      display: block;
      color: var(--ink);
      font-weight: 900;
      line-height: 1.2;
    }

    .quote-user span {
      color: var(--muted);
      font-size: 14px;
    }

    .news-section {
      background: #fff;
    }

    .news-layout {
      margin-top: 32px;
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 24px;
      align-items: start;
    }

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

    .news-item {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid var(--line);
      transition: var(--ease);
    }

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

    .news-item:hover {
      background: #f8f9ff;
    }

    .news-date {
      color: var(--muted);
      font-weight: 800;
      font-size: 14px;
    }

    .news-title {
      color: var(--ink);
      font-weight: 900;
      line-height: 1.45;
    }

    .news-title:hover {
      color: var(--primary-dark);
    }

    .news-arrow {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
    }

    .recommend-panel {
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, #fbfcff, #ffffff);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .recommend-panel h3 {
      margin: 0 0 14px;
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .tag {
      padding: 8px 11px;
      border-radius: 999px;
      background: #f1f3fa;
      color: var(--text);
      font-size: 14px;
      font-weight: 800;
      border: 1px solid transparent;
    }

    .tag:hover {
      background: var(--primary-soft);
      color: var(--primary-dark);
      border-color: rgba(91, 92, 246, .16);
    }

    .faq-wrap {
      margin-top: 32px;
      display: grid;
      grid-template-columns: .7fr 1.3fr;
      gap: 24px;
      align-items: start;
    }

    .faq-help-card {
      border-radius: var(--radius-lg);
      padding: 26px;
      background: linear-gradient(135deg, #fff7e5, #ffffff);
      border: 1px solid rgba(255, 181, 71, .26);
      box-shadow: var(--shadow-sm);
    }

    .faq-help-card h3 {
      color: var(--ink);
      font-weight: 900;
      margin: 0 0 12px;
      letter-spacing: -.03em;
    }

    .faq-help-card p {
      color: var(--muted);
      margin: 0 0 18px;
    }

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

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

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

    .accordion-button:not(.collapsed) {
      color: var(--primary-dark);
      background: #f7f8ff;
    }

    .accordion-button::after {
      filter: saturate(.6);
    }

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

    .cta-section {
      padding-top: 72px;
    }

    .cta-panel {
      border-radius: 36px;
      background:
        radial-gradient(circle at 86% 20%, rgba(89, 240, 212, .22), transparent 26%),
        linear-gradient(135deg, #171a37, #3a3ba7 58%, #5b5cf6);
      color: #fff;
      padding: clamp(28px, 5vw, 52px);
      box-shadow: var(--shadow);
      overflow: hidden;
      position: relative;
    }

    .cta-panel::before {
      content: "";
      position: absolute;
      inset: -90px auto auto -90px;
      width: 250px;
      height: 250px;
      border-radius: 50%;
      background: rgba(255, 181, 71, .18);
    }

    .cta-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 30px;
      align-items: center;
    }

    .cta-panel h2 {
      margin: 0;
      font-size: clamp(30px, 4.6vw, 52px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: -.055em;
    }

    .cta-panel p {
      color: rgba(255, 255, 255, .76);
      margin: 18px 0 0;
      max-width: 540px;
    }

    .lead-form {
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .18);
      border-radius: 28px;
      padding: 22px;
      backdrop-filter: blur(18px);
    }

    .form-label {
      color: rgba(255, 255, 255, .86);
      font-weight: 800;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      border: 1px solid rgba(230, 233, 242, .95);
      color: var(--ink);
      background-color: #fff;
      padding: 11px 14px;
    }

    .form-control::placeholder {
      color: #98a2b3;
    }

    .form-hint {
      color: rgba(255, 255, 255, .7);
      font-size: 13px;
      margin-top: 10px;
    }

    .form-result {
      min-height: 24px;
      color: #93ffe9;
      font-size: 14px;
      margin-top: 12px;
    }

    .site-footer {
      padding: 54px 0 38px;
      background: #0f1224;
      color: rgba(255, 255, 255, .72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 900;
      font-size: 21px;
      letter-spacing: -.03em;
      margin-bottom: 12px;
    }

    .footer-brand .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      box-shadow: none;
    }

    .footer-text {
      margin: 0;
      max-width: 680px;
      color: rgba(255, 255, 255, .62);
    }

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

    .footer-links a {
      padding: 9px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .07);
      color: rgba(255, 255, 255, .78);
      font-weight: 700;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(91, 92, 246, .42);
    }

    .copyright {
      margin-top: 26px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .1);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      color: rgba(255, 255, 255, .52);
      font-size: 14px;
    }

    .floating-cta {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 40;
      display: none;
      box-shadow: var(--shadow);
    }

    @media (max-width: 1024px) {
      section {
        padding: 70px 0;
      }

      .hero-grid,
      .feature-layout,
      .product-stage,
      .changelog-wrap,
      .news-layout,
      .faq-wrap,
      .cta-grid {
        grid-template-columns: 1fr;
      }

      .feature-aside {
        position: relative;
        top: auto;
      }

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

      .metric-card.featured {
        grid-column: span 2;
      }

      .testimonial-wall {
        column-count: 2;
      }
    }

    @media (max-width: 768px) {
      body {
        font-size: 15px;
      }

      .navbar-shell {
        min-height: 66px;
      }

      .brand-logo {
        font-size: 19px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 14px;
      }

      .nav-actions .btn-custom {
        min-height: 40px;
        padding: 9px 14px;
        font-size: 14px;
      }

      .hero-section {
        padding-top: 28px;
      }

      .hero-banner {
        border-radius: 26px;
        min-height: auto;
      }

      .hero-title {
        font-size: clamp(34px, 12vw, 52px);
      }

      .hero-intro {
        font-size: 16px;
      }

      .invite-card {
        padding: 18px;
        border-radius: 22px;
      }

      .metric-board,
      .service-matrix,
      .screen-grid,
      .latest-kpi {
        grid-template-columns: 1fr;
      }

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

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

      .compare-row {
        min-width: 680px;
      }

      .change-item {
        grid-template-columns: 1fr;
        gap: 8px;
      }

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

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

      .testimonial-wall {
        column-count: 1;
      }

      .footer-grid,
      .copyright {
        grid-template-columns: 1fr;
        text-align: left;
      }

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

      .floating-cta {
        display: inline-flex;
      }
    }

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

      section {
        padding: 56px 0;
      }

      .hero-banner,
      .cta-panel {
        border-radius: 22px;
        padding: 24px;
      }

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

      .hero-cta .btn-custom,
      .invite-code .btn-custom,
      .lead-form .btn-custom {
        width: 100%;
      }

      .invite-code {
        align-items: stretch;
        flex-direction: column;
      }

      .section-title {
        font-size: 29px;
      }

      .screen-body {
        padding: 14px;
      }

      .stage-points li,
      .service-card,
      .metric-card,
      .quote-card {
        padding: 18px;
      }
    }

/* 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}