/* roulang page: index */
:root {
      --ink: #171821;
      --ink-soft: #4b4d5c;
      --muted: #777b8d;
      --bg: #faf8fb;
      --panel: #ffffff;
      --panel-soft: #fff4f7;
      --line: rgba(32, 34, 46, .1);
      --brand: #fb4f7a;
      --brand-2: #7c5cff;
      --brand-3: #18c9b5;
      --brand-dark: #1d1a27;
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 16px;
      --shadow: 0 18px 45px rgba(24, 24, 36, .08);
      --shadow-hover: 0 24px 60px rgba(24, 24, 36, .13);
      --sidebar: 248px;
      --ease: .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      background:
        radial-gradient(circle at 78% 4%, rgba(251, 79, 122, .12), transparent 32rem),
        radial-gradient(circle at 18% 34%, rgba(24, 201, 181, .11), transparent 30rem),
        var(--bg);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.65;
      letter-spacing: 0;
    }

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

    a:focus,
    button:focus,
    input:focus,
    select:focus,
    textarea:focus {
      outline: 3px solid rgba(251, 79, 122, .22);
      outline-offset: 3px;
    }

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

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

    .mobile-topbar {
      display: none;
    }

    .off-canvas {
      background: var(--brand-dark);
      color: #fff;
      padding: 22px;
    }

    .app-shell {
      display: flex;
      min-height: 100vh;
    }

    .sidebar {
      position: fixed;
      inset: 0 auto 0 0;
      z-index: 20;
      width: var(--sidebar);
      padding: 22px 18px;
      background:
        linear-gradient(180deg, rgba(37, 33, 52, .98), rgba(22, 21, 31, .98)),
        var(--brand-dark);
      color: #fff;
      border-right: 1px solid rgba(255, 255, 255, .08);
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 52px;
      font-weight: 800;
      line-height: 1.25;
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      flex: 0 0 44px;
      background: linear-gradient(135deg, var(--brand), var(--brand-2) 55%, var(--brand-3));
      position: relative;
      box-shadow: 0 12px 28px rgba(251, 79, 122, .26);
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      top: 50%;
      width: 4px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .9);
      transform: translateY(-50%);
    }

    .brand-mark::before {
      left: 14px;
      height: 16px;
      box-shadow: 8px -5px 0 rgba(255, 255, 255, .75), 16px 4px 0 rgba(255, 255, 255, .65);
    }

    .brand-mark::after {
      right: 9px;
      height: 9px;
      opacity: .7;
    }

    .brand-text {
      font-size: 16px;
    }

    .side-menu {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin: 0;
      list-style: none;
    }

    .side-menu a {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      padding: 10px 12px;
      border-radius: 14px;
      color: rgba(255, 255, 255, .78);
      font-weight: 700;
      font-size: 14px;
    }

    .side-menu a::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .32);
      box-shadow: 0 0 0 4px rgba(255, 255, 255, .05);
      flex: 0 0 9px;
    }

    .side-menu a:hover,
    .side-menu a.active {
      color: #fff;
      background: rgba(255, 255, 255, .1);
      transform: translateX(2px);
    }

    .side-menu a.active::before {
      background: var(--brand);
      box-shadow: 0 0 0 4px rgba(251, 79, 122, .22);
    }

    .side-badge {
      margin-top: auto;
      padding: 16px;
      border-radius: 18px;
      background: linear-gradient(135deg, rgba(251, 79, 122, .18), rgba(24, 201, 181, .14));
      border: 1px solid rgba(255, 255, 255, .12);
    }

    .side-badge strong {
      display: block;
      font-size: 22px;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .side-badge span {
      display: block;
      color: rgba(255, 255, 255, .72);
      font-size: 13px;
      line-height: 1.5;
    }

    .content {
      width: 100%;
      margin-left: var(--sidebar);
      min-width: 0;
    }

    .page-wrap {
      width: min(100%, 1260px);
      margin: 0 auto;
      padding: 30px 34px 0;
    }

    section {
      margin: 0 0 82px;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      padding: 7px 12px;
      border-radius: 999px;
      color: #8d2140;
      background: rgba(251, 79, 122, .1);
      font-weight: 800;
      font-size: 13px;
    }

    .section-kicker::before {
      content: "";
      width: 22px;
      height: 8px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--brand), var(--brand-3));
    }

    h1,
    h2,
    h3 {
      margin: 0;
      color: var(--ink);
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: 0;
    }

    h1 {
      font-size: clamp(34px, 5vw, 62px);
      max-width: 920px;
    }

    h2 {
      font-size: clamp(26px, 3.2vw, 40px);
    }

    h3 {
      font-size: 20px;
    }

    p {
      margin: 0;
      color: var(--ink-soft);
    }

    .lead {
      max-width: 760px;
      font-size: 18px;
      color: #343645;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1.2;
      cursor: pointer;
      white-space: normal;
      text-align: center;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow: 0 14px 30px rgba(251, 79, 122, .25);
    }

    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      filter: brightness(1.04);
      box-shadow: 0 18px 40px rgba(251, 79, 122, .32);
    }

    .btn-secondary {
      color: var(--ink);
      background: rgba(255, 255, 255, .72);
      border-color: rgba(32, 34, 46, .12);
    }

    .btn-secondary:hover {
      color: var(--brand);
      border-color: rgba(251, 79, 122, .35);
      transform: translateY(-2px);
      background: #fff;
    }

    .btn-ghost {
      min-height: 40px;
      padding: 9px 14px;
      color: var(--brand);
      border-color: rgba(251, 79, 122, .18);
      background: rgba(251, 79, 122, .06);
    }

    .btn-ghost:hover {
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
      transform: translateY(-2px);
    }

    .hero {
      position: relative;
      overflow: hidden;
      min-height: 650px;
      padding: 38px;
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(251, 79, 122, .94), rgba(124, 92, 255, .9) 54%, rgba(24, 201, 181, .86)),
        #2b213b;
      box-shadow: var(--shadow);
      color: #fff;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: auto -10% -42% 24%;
      height: 470px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .14);
      pointer-events: none;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: 28px 28px auto auto;
      width: 230px;
      height: 76px;
      background:
        linear-gradient(90deg, rgba(255, 255, 255, .2) 8px, transparent 8px) 0 0 / 18px 100%;
      border-radius: 999px;
      opacity: .38;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(330px, .75fr);
      gap: 30px;
      align-items: stretch;
    }

    .hero-copy {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 28px;
      min-height: 570px;
    }

    .hero h1,
    .hero p {
      color: #fff;
    }

    .hero .lead {
      max-width: 720px;
      color: rgba(255, 255, 255, .86);
      margin-top: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .hero .btn-secondary {
      color: #fff;
      background: rgba(255, 255, 255, .14);
      border-color: rgba(255, 255, 255, .28);
    }

    .hero .btn-secondary:hover {
      background: rgba(255, 255, 255, .22);
      color: #fff;
    }

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

    .hero-point {
      min-height: 92px;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .18);
      backdrop-filter: blur(8px);
    }

    .hero-point strong {
      display: block;
      color: #fff;
      font-size: 24px;
      line-height: 1.1;
    }

    .hero-point span {
      display: block;
      margin-top: 5px;
      color: rgba(255, 255, 255, .78);
      font-size: 13px;
    }

    .hero-board {
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .join-card,
    .entry-card {
      padding: 20px;
      border-radius: 24px;
      background: rgba(255, 255, 255, .92);
      color: var(--ink);
      box-shadow: 0 18px 44px rgba(19, 14, 32, .18);
    }

    .join-card {
      min-height: 220px;
    }

    .join-top {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }

    .join-top span {
      color: var(--muted);
      font-weight: 700;
      font-size: 13px;
    }

    .join-count {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin: 8px 0;
    }

    .join-count strong {
      font-size: 42px;
      line-height: 1;
      color: var(--ink);
    }

    .join-count em {
      font-style: normal;
      color: var(--brand);
      font-weight: 800;
    }

    .mini-wave {
      display: flex;
      align-items: end;
      gap: 5px;
      height: 42px;
      margin: 18px 0 0;
    }

    .mini-wave i {
      display: block;
      width: 8px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--brand), var(--brand-3));
    }

    .mini-wave i:nth-child(1) { height: 15px; }
    .mini-wave i:nth-child(2) { height: 28px; }
    .mini-wave i:nth-child(3) { height: 19px; }
    .mini-wave i:nth-child(4) { height: 36px; }
    .mini-wave i:nth-child(5) { height: 24px; }
    .mini-wave i:nth-child(6) { height: 31px; }

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

    .entry-card {
      min-height: 118px;
      padding: 16px;
    }

    .entry-card b {
      display: block;
      margin-bottom: 6px;
      font-size: 16px;
    }

    .entry-card span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .card {
      height: 100%;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--panel);
      box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
      overflow: hidden;
    }

    .card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(251, 79, 122, .18);
    }

    .track-strip {
      padding: 26px;
      border-radius: var(--radius-xl);
      background: #fff;
      box-shadow: var(--shadow);
    }

    .track-row {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
      align-items: stretch;
    }

    .track-main {
      padding: 30px;
      min-height: 300px;
      border-radius: 24px;
      background:
        linear-gradient(135deg, rgba(255, 244, 247, .96), rgba(235, 255, 252, .92)),
        #fff;
      border: 1px solid rgba(251, 79, 122, .12);
    }

    .track-list {
      display: grid;
      gap: 12px;
    }

    .track-item {
      display: grid;
      grid-template-columns: 70px minmax(0, 1fr) auto;
      gap: 14px;
      align-items: center;
      min-height: 86px;
      padding: 14px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--line);
    }

    .track-index {
      display: grid;
      place-items: center;
      width: 56px;
      height: 56px;
      border-radius: 18px;
      color: #fff;
      font-weight: 800;
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
    }

    .tag,
    .status {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 28px;
      padding: 5px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 800;
      line-height: 1.2;
      color: #8d2140;
      background: rgba(251, 79, 122, .1);
    }

    .status.green {
      color: #087668;
      background: rgba(24, 201, 181, .12);
    }

    .status.purple {
      color: #4f3dc3;
      background: rgba(124, 92, 255, .12);
    }

    .recommend-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
      gap: 18px;
    }

    .feature-card {
      padding: 34px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(29, 26, 39, .96), rgba(64, 43, 78, .96)),
        var(--brand-dark);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .feature-card::after {
      content: "";
      position: absolute;
      right: -60px;
      bottom: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(251, 79, 122, .35), rgba(24, 201, 181, .24));
      pointer-events: none;
    }

    .feature-card h3,
    .feature-card p {
      color: #fff;
      position: relative;
      z-index: 1;
    }

    .feature-card p {
      color: rgba(255, 255, 255, .78);
      margin-top: 12px;
    }

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

    .small-recommend {
      padding: 24px;
    }

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

    .topic-card {
      padding: 22px;
      min-height: 220px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .topic-icon {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(251, 79, 122, .14), rgba(24, 201, 181, .16));
      position: relative;
    }

    .topic-icon::before {
      content: "";
      position: absolute;
      inset: 14px 10px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--brand), var(--brand-3));
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 18px;
    }

    .news-list,
    .side-panel {
      padding: 24px;
      border-radius: var(--radius-xl);
      background: #fff;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
    }

    .news-item {
      display: grid;
      grid-template-columns: 92px minmax(0, 1fr) auto;
      gap: 16px;
      align-items: center;
      padding: 18px 0;
      border-bottom: 1px solid var(--line);
    }

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

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

    .news-item a {
      font-weight: 800;
      color: var(--ink);
    }

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

    .path-card {
      padding: 28px;
      border-radius: var(--radius-xl);
      background: linear-gradient(135deg, #fff, #fff7fa);
      box-shadow: var(--shadow);
      border: 1px solid rgba(251, 79, 122, .12);
    }

    .path-steps {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      margin-top: 22px;
    }

    .step {
      min-height: 190px;
      padding: 22px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--line);
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      margin-bottom: 16px;
      border-radius: 50%;
      color: #fff;
      font-weight: 800;
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
    }

    .data-band {
      padding: 32px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(29, 26, 39, .96), rgba(54, 42, 70, .94)),
        var(--brand-dark);
      color: #fff;
      overflow: hidden;
      position: relative;
    }

    .data-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(255, 255, 255, .08) 6px, transparent 6px) 0 85% / 20px 54px;
      opacity: .32;
      pointer-events: none;
    }

    .data-band h2,
    .data-band p {
      color: #fff;
      position: relative;
      z-index: 1;
    }

    .data-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 24px;
    }

    .data-pill {
      min-height: 132px;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .12);
    }

    .data-pill strong {
      display: block;
      font-size: 32px;
      line-height: 1.1;
      color: #fff;
    }

    .data-pill span {
      display: block;
      margin-top: 8px;
      color: rgba(255, 255, 255, .74);
      font-size: 14px;
    }

    .accordion {
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
      background: #fff;
    }

    .accordion-title {
      border: 0;
      border-bottom: 1px solid var(--line);
      color: var(--ink);
      font-weight: 800;
      font-size: 16px;
      padding: 20px 56px 20px 22px;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      color: var(--brand);
      background: rgba(251, 79, 122, .06);
    }

    .accordion-content {
      border: 0;
      border-bottom: 1px solid var(--line);
      color: var(--ink-soft);
      padding: 18px 22px 22px;
      background: #fff;
    }

    .contact-card {
      display: grid;
      grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
      gap: 24px;
      padding: 34px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(242, 255, 253, .9)),
        #fff;
      box-shadow: var(--shadow);
      border: 1px solid rgba(24, 201, 181, .15);
    }

    .contact-notes {
      display: grid;
      gap: 12px;
      margin-top: 22px;
    }

    .note {
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(251, 79, 122, .07);
      color: var(--ink-soft);
      font-weight: 700;
    }

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

    .field {
      display: grid;
      gap: 7px;
    }

    .field.full {
      grid-column: 1 / -1;
    }

    .field label {
      color: var(--ink);
      font-weight: 800;
      font-size: 14px;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      min-height: 48px;
      border: 1px solid rgba(32, 34, 46, .14);
      border-radius: 16px;
      padding: 12px 14px;
      color: var(--ink);
      background: #fff;
      box-shadow: none;
      transition: border-color var(--ease), box-shadow var(--ease);
    }

    .field textarea {
      min-height: 116px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(251, 79, 122, .55);
      box-shadow: 0 0 0 4px rgba(251, 79, 122, .1);
    }

    .site-footer {
      margin-top: 30px;
      padding: 34px;
      border-radius: 28px 28px 0 0;
      background: var(--brand-dark);
      color: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 26px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
      font-weight: 800;
    }

    .footer-brand .brand-mark {
      width: 38px;
      height: 38px;
      flex-basis: 38px;
    }

    .site-footer p {
      max-width: 720px;
      color: rgba(255, 255, 255, .68);
    }

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

    .footer-links a {
      padding: 8px 12px;
      border-radius: 999px;
      color: rgba(255, 255, 255, .76);
      background: rgba(255, 255, 255, .08);
      font-weight: 700;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(255, 255, 255, .14);
    }

    .copyright {
      margin-top: 24px;
      padding-top: 18px;
      border-top: 1px solid rgba(255, 255, 255, .1);
      color: rgba(255, 255, 255, .58);
      font-size: 13px;
    }

    @media (max-width: 1180px) {
      :root {
        --sidebar: 216px;
      }

      .page-wrap {
        padding: 24px 24px 0;
      }

      .hero-inner,
      .track-row,
      .recommend-grid,
      .news-layout,
      .contact-card {
        grid-template-columns: 1fr;
      }

      .hero-copy {
        min-height: auto;
      }

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

    @media (max-width: 900px) {
      .mobile-topbar {
        position: sticky;
        top: 0;
        z-index: 18;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        min-height: 64px;
        padding: 10px 16px;
        background: rgba(255, 255, 255, .92);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--line);
      }

      .mobile-topbar .brand {
        color: var(--ink);
      }

      .menu-button {
        width: 44px;
        height: 44px;
        border-radius: 14px;
        border: 1px solid var(--line);
        background: #fff;
        color: var(--ink);
        font-weight: 800;
      }

      .sidebar {
        display: none;
      }

      .content {
        margin-left: 0;
      }

      .page-wrap {
        padding: 18px 16px 0;
      }

      section {
        margin-bottom: 58px;
      }

      .hero {
        min-height: auto;
        padding: 24px;
        border-radius: 24px;
      }

      .hero-inner,
      .hero-points,
      .entry-grid,
      .path-steps,
      .feedback-form {
        grid-template-columns: 1fr;
      }

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

      .section-head {
        display: block;
      }

      .section-head .btn {
        margin-top: 16px;
      }

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

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

    @media (max-width: 560px) {
      h1 {
        font-size: 34px;
      }

      h2 {
        font-size: 26px;
      }

      .hero,
      .track-strip,
      .data-band,
      .contact-card,
      .site-footer {
        padding: 20px;
      }

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

      .btn {
        width: 100%;
      }

      .hero-actions {
        width: 100%;
      }

      .join-count strong {
        font-size: 36px;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #f7f8fb;
      --bg-soft: #fff5f7;
      --panel: #ffffff;
      --panel-strong: #11121b;
      --text: #1d1f2a;
      --muted: #6c7280;
      --weak: #9299a8;
      --line: rgba(29, 31, 42, .10);
      --primary: #ff4f7b;
      --primary-dark: #db315f;
      --cyan: #16c7b7;
      --violet: #7567ff;
      --amber: #ffb55f;
      --grad: linear-gradient(135deg, #ff4f7b 0%, #7567ff 54%, #16c7b7 100%);
      --grad-soft: linear-gradient(135deg, rgba(255, 79, 123, .14), rgba(117, 103, 255, .12), rgba(22, 199, 183, .14));
      --shadow: 0 18px 45px rgba(20, 20, 30, .08);
      --shadow-hover: 0 24px 60px rgba(20, 20, 30, .13);
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --sidebar: 252px;
      --ease: all .24s ease;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background:
        radial-gradient(circle at top right, rgba(255, 79, 123, .12), transparent 34rem),
        radial-gradient(circle at bottom left, rgba(22, 199, 183, .10), transparent 30rem),
        var(--bg);
      color: var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      line-height: 1.65;
      font-weight: 400;
      overflow-x: hidden;
    }

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

    img, svg { max-width: 100%; display: block; }
    button, input, textarea, select { font: inherit; }
    button { cursor: pointer; }

    :focus-visible {
      outline: 3px solid rgba(22, 199, 183, .42);
      outline-offset: 3px;
    }

    .app-shell {
      min-height: 100vh;
      padding-left: var(--sidebar);
    }

    .side-nav {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--sidebar);
      z-index: 50;
      padding: 22px 18px;
      background: linear-gradient(180deg, #12131d 0%, #1c1825 58%, #171b22 100%);
      color: #fff;
      border-right: 1px solid rgba(255, 255, 255, .08);
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 54px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: .01em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 50%;
      background: var(--grad);
      position: relative;
      box-shadow: 0 14px 28px rgba(255, 79, 123, .28);
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      left: 10px;
      right: 10px;
      height: 4px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .86);
    }

    .brand-mark::before { top: 14px; box-shadow: 7px 7px 0 rgba(255, 255, 255, .72); }
    .brand-mark::after { bottom: 10px; width: 12px; left: 16px; }

    .nav-menu {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .nav-menu a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 13px;
      border-radius: 15px;
      color: rgba(255, 255, 255, .76);
      font-weight: 700;
      font-size: 15px;
    }

    .nav-menu a::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .35);
      box-shadow: 10px 0 0 rgba(255, 255, 255, .18);
    }

    .nav-menu a:hover,
    .nav-menu a.active {
      color: #fff;
      background: rgba(255, 255, 255, .10);
      transform: translateX(2px);
    }

    .nav-menu a.active::before {
      background: var(--cyan);
      box-shadow: 10px 0 0 var(--primary);
    }

    .side-status {
      margin-top: auto;
      padding: 16px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .10);
    }

    .side-status strong {
      display: block;
      font-size: 24px;
      line-height: 1;
      margin-bottom: 8px;
    }

    .side-status span {
      display: block;
      color: rgba(255, 255, 255, .70);
      font-size: 13px;
      line-height: 1.5;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 60;
      padding: 12px 16px;
      background: rgba(247, 248, 251, .86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
      align-items: center;
      justify-content: space-between;
    }

    .menu-toggle {
      border: 0;
      border-radius: 999px;
      padding: 10px 14px;
      background: #171923;
      color: #fff;
      font-weight: 800;
    }

    .off-canvas {
      background: #12131d;
      color: #fff;
      padding: 22px 18px;
    }

    .main-content {
      width: 100%;
    }

    .page-wrap {
      max-width: 1240px;
      margin: 0 auto;
      padding: 40px 34px 0;
    }

    .section {
      margin: 82px 0;
    }

    .section:first-child { margin-top: 0; }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 79, 123, .10);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .eyebrow::before {
      content: "";
      width: 24px;
      height: 8px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--primary), var(--cyan));
    }

    h1, h2, h3 {
      margin: 0;
      line-height: 1.18;
      color: var(--text);
      font-weight: 800;
    }

    h1 {
      font-size: clamp(34px, 5vw, 64px);
      letter-spacing: -.02em;
    }

    h2 {
      font-size: clamp(28px, 3.4vw, 44px);
      letter-spacing: -.01em;
    }

    h3 {
      font-size: clamp(19px, 2vw, 24px);
    }

    p {
      margin: 0;
      color: var(--muted);
    }

    .lead {
      font-size: 18px;
      max-width: 760px;
      color: #505766;
    }

    .hero-panel {
      position: relative;
      overflow: hidden;
      border-radius: 34px;
      padding: 42px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(255, 255, 255, .88)),
        var(--grad-soft);
      box-shadow: var(--shadow);
      border: 1px solid rgba(255, 255, 255, .82);
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      right: -110px;
      top: -140px;
      background: radial-gradient(circle, rgba(255, 79, 123, .22), transparent 68%);
      pointer-events: none;
      z-index: 0;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      left: 38px;
      right: 38px;
      bottom: 28px;
      height: 26px;
      background:
        linear-gradient(90deg, rgba(255,79,123,.28) 0 8%, transparent 8% 13%, rgba(117,103,255,.24) 13% 23%, transparent 23% 30%, rgba(22,199,183,.25) 30% 43%, transparent 43% 100%);
      border-radius: 999px;
      opacity: .28;
      pointer-events: none;
      z-index: 0;
    }

    .hero-content {
      position: relative;
      z-index: 1;
    }

    .hero-question {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(320px, .72fr);
      gap: 30px;
      align-items: stretch;
    }

    .question-card {
      border-radius: 28px;
      padding: 26px;
      background: #151722;
      color: #fff;
      box-shadow: 0 24px 55px rgba(21, 23, 34, .18);
    }

    .question-card h2 {
      color: #fff;
      font-size: 26px;
      margin-bottom: 10px;
    }

    .question-card p { color: rgba(255, 255, 255, .72); }

    .quick-form {
      margin-top: 20px;
      display: grid;
      gap: 12px;
    }

    .quick-form label {
      color: rgba(255, 255, 255, .82);
      font-size: 13px;
      font-weight: 800;
    }

    .quick-form input,
    .quick-form select,
    .quick-form textarea,
    .contact-form input,
    .contact-form select,
    .contact-form textarea {
      width: 100%;
      border: 1px solid rgba(29, 31, 42, .11);
      border-radius: 15px;
      padding: 13px 15px;
      background: #fff;
      color: var(--text);
      box-shadow: none;
      margin: 0;
      transition: var(--ease);
    }

    .quick-form input:focus,
    .quick-form select:focus,
    .quick-form textarea:focus,
    .contact-form input:focus,
    .contact-form select:focus,
    .contact-form textarea:focus {
      border-color: rgba(22, 199, 183, .65);
      box-shadow: 0 0 0 4px rgba(22, 199, 183, .12);
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1.2;
      transition: var(--ease);
    }

    .btn-primary {
      background: var(--grad);
      color: #fff;
      box-shadow: 0 14px 28px rgba(255, 79, 123, .22);
    }

    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      filter: brightness(1.05);
      box-shadow: 0 18px 36px rgba(117, 103, 255, .25);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, .78);
      color: var(--text);
      border-color: rgba(29, 31, 42, .12);
    }

    .btn-secondary:hover {
      border-color: rgba(255, 79, 123, .35);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }

    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 12px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      margin-top: 30px;
    }

    .filter-chip {
      border: 0;
      border-radius: 999px;
      padding: 10px 15px;
      color: var(--muted);
      background: #f3f5f8;
      font-weight: 800;
      transition: var(--ease);
    }

    .filter-chip:hover,
    .filter-chip.is-active {
      color: #fff;
      background: var(--grad);
      transform: translateY(-1px);
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 24px;
      align-items: start;
      margin-top: 24px;
    }

    .index-list {
      display: grid;
      gap: 16px;
    }

    .index-card {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 18px;
      padding: 24px;
      border-radius: 24px;
      background: var(--panel);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transition: var(--ease);
      min-height: 160px;
    }

    .index-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 79, 123, .20);
    }

    .card-icon {
      width: 54px;
      height: 54px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
      background: var(--grad);
      box-shadow: 0 14px 26px rgba(255, 79, 123, .20);
    }

    .card-head {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: flex-start;
      margin-bottom: 8px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
      padding: 6px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 900;
      color: var(--primary-dark);
      background: rgba(255, 79, 123, .10);
    }

    .badge.cyan {
      color: #087f76;
      background: rgba(22, 199, 183, .12);
    }

    .badge.violet {
      color: #5146d6;
      background: rgba(117, 103, 255, .12);
    }

    .card-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      color: var(--primary-dark);
      font-weight: 900;
    }

    .text-link:hover {
      color: #11121b;
      transform: translateX(2px);
    }

    .aside-stack {
      display: grid;
      gap: 16px;
      position: sticky;
      top: 28px;
    }

    .aside-card,
    .soft-card,
    .data-panel,
    .contact-card {
      border-radius: var(--radius-xl);
      background: var(--panel);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      padding: 28px;
    }

    .aside-card.dark {
      background: #151722;
      color: #fff;
      overflow: hidden;
      position: relative;
    }

    .aside-card.dark::after {
      content: "";
      position: absolute;
      width: 160px;
      height: 160px;
      right: -60px;
      bottom: -70px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(22, 199, 183, .26), transparent 70%);
      pointer-events: none;
    }

    .aside-card.dark h3 { color: #fff; }
    .aside-card.dark p { color: rgba(255, 255, 255, .72); }

    .wave-bars {
      display: flex;
      align-items: end;
      gap: 5px;
      height: 46px;
      margin: 18px 0 4px;
    }

    .wave-bars span {
      width: 8px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--cyan), var(--primary));
      opacity: .88;
    }

    .wave-bars span:nth-child(1) { height: 16px; }
    .wave-bars span:nth-child(2) { height: 28px; }
    .wave-bars span:nth-child(3) { height: 40px; }
    .wave-bars span:nth-child(4) { height: 22px; }
    .wave-bars span:nth-child(5) { height: 34px; }
    .wave-bars span:nth-child(6) { height: 18px; }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-head p { max-width: 620px; }

    .feature-grid {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 20px;
    }

    .feature-main {
      min-height: 320px;
      background: linear-gradient(135deg, #191b27, #282335);
      color: #fff;
      overflow: hidden;
      position: relative;
    }

    .feature-main h3 { color: #fff; font-size: 30px; }
    .feature-main p { color: rgba(255, 255, 255, .72); margin-top: 10px; }

    .feature-main::after {
      content: "";
      position: absolute;
      inset: auto -80px -90px auto;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: var(--grad);
      opacity: .35;
      pointer-events: none;
    }

    .feature-stack {
      display: grid;
      gap: 20px;
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--muted);
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(22, 199, 183, .14);
      color: #087f76;
      font-weight: 900;
      line-height: 1;
      margin-top: 2px;
    }

    .data-panel {
      background:
        linear-gradient(135deg, rgba(255, 79, 123, .95), rgba(117, 103, 255, .94) 55%, rgba(22, 199, 183, .92)),
        #151722;
      color: #fff;
      overflow: hidden;
      position: relative;
    }

    .data-panel h2,
    .data-panel p { color: #fff; }

    .data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-top: 26px;
      position: relative;
      z-index: 1;
    }

    .data-item {
      padding: 22px 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .18);
      min-height: 126px;
    }

    .data-item strong {
      display: block;
      font-size: 34px;
      line-height: 1;
      margin-bottom: 10px;
    }

    .data-item span {
      color: rgba(255, 255, 255, .78);
      font-weight: 700;
      font-size: 14px;
    }

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

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

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

    .scenario-meta {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 16px;
    }

    .status-dot {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--weak);
      font-weight: 800;
      font-size: 13px;
    }

    .status-dot::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 0 5px rgba(22, 199, 183, .12);
    }

    .tabs-panel {
      padding: 0;
    }

    .tabs {
      border: 0;
      background: transparent;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .tabs-title > a {
      border-radius: 999px;
      padding: 11px 16px;
      background: #fff;
      color: var(--muted);
      border: 1px solid var(--line);
      font-weight: 900;
    }

    .tabs-title > a:hover,
    .tabs-title.is-active > a {
      background: var(--grad);
      color: #fff;
    }

    .path-card {
      border-radius: 26px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      padding: 28px;
    }

    .path-steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .step {
      padding: 20px;
      border-radius: 20px;
      background: #f8f9fc;
      border: 1px solid var(--line);
    }

    .step-number {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--grad);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .accordion {
      background: transparent;
    }

    .accordion-item {
      margin-bottom: 12px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--line);
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(20, 20, 30, .05);
    }

    .accordion-title {
      border: 0;
      color: var(--text);
      font-weight: 900;
      font-size: 17px;
      padding: 20px 54px 20px 22px;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(255, 79, 123, .07);
      color: var(--primary-dark);
    }

    .accordion-content {
      border: 0;
      padding: 0 22px 22px;
      color: var(--muted);
      background: #fff;
    }

    .accordion-content p {
      padding-left: 16px;
      border-left: 3px solid rgba(22, 199, 183, .40);
    }

    .contact-card {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 26px;
      background:
        linear-gradient(135deg, rgba(255,255,255,.96), rgba(255,255,255,.88)),
        var(--grad-soft);
    }

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

    .contact-form label {
      font-weight: 900;
      color: var(--text);
      font-size: 14px;
    }

    .form-note {
      font-size: 13px;
      color: var(--weak);
    }

    .site-footer {
      margin-top: 70px;
      padding: 34px;
      border-radius: 30px 30px 0 0;
      background: #12131d;
      color: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      margin-bottom: 12px;
    }

    .site-footer p {
      max-width: 620px;
      color: rgba(255, 255, 255, .68);
    }

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

    .footer-links a {
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .08);
      color: rgba(255, 255, 255, .76);
      font-weight: 800;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(255, 255, 255, .14);
      transform: translateY(-2px);
    }

    .copyright {
      margin-top: 28px;
      padding-top: 18px;
      border-top: 1px solid rgba(255, 255, 255, .10);
      color: rgba(255, 255, 255, .52);
      font-size: 13px;
    }

    @media (max-width: 1180px) {
      :root { --sidebar: 218px; }
      .page-wrap { padding: 30px 24px 0; }
      .hero-question,
      .content-layout,
      .contact-card {
        grid-template-columns: 1fr;
      }
      .aside-stack { position: static; grid-template-columns: repeat(2, 1fr); }
      .data-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 900px) {
      .app-shell { padding-left: 0; }
      .side-nav { display: none; }
      .mobile-topbar { display: flex; }
      .page-wrap { padding: 24px 18px 0; }
      .section { margin: 62px 0; }
      .hero-panel { padding: 28px; border-radius: 28px; }
      .feature-grid,
      .scenario-grid,
      .path-steps {
        grid-template-columns: 1fr;
      }
      .section-head { display: block; }
      .section-head p { margin-top: 10px; }
      .aside-stack { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
    }

    @media (max-width: 560px) {
      .page-wrap { padding: 18px 16px 0; }
      .mobile-topbar .brand span:last-child { font-size: 14px; }
      .brand-mark { width: 36px; height: 36px; flex-basis: 36px; }
      .hero-panel,
      .soft-card,
      .data-panel,
      .contact-card,
      .aside-card {
        padding: 22px;
      }
      .question-card { padding: 22px; }
      .index-card {
        grid-template-columns: 1fr;
        padding: 20px;
      }
      .card-head {
        flex-direction: column;
        align-items: flex-start;
      }
      .data-grid { grid-template-columns: 1fr; }
      .btn { width: 100%; }
      .filter-chip { flex: 1 1 auto; }
      .site-footer { padding: 26px 18px; }
    }

/* roulang page: category2 */
:root {
      --bg: #f7f8fb;
      --surface: #ffffff;
      --surface-soft: #fff4f7;
      --ink: #171821;
      --muted: #686b78;
      --weak: #8b8f9f;
      --line: rgba(29, 31, 42, .1);
      --dark: #151620;
      --dark-2: #202130;
      --coral: #ff5d6c;
      --pink: #ff7bb8;
      --mint: #21c7a8;
      --violet: #705cff;
      --cyan: #28d4e4;
      --grad: linear-gradient(135deg, #ff5d6c 0%, #ff7bb8 42%, #705cff 100%);
      --grad-2: linear-gradient(135deg, rgba(33,199,168,.16), rgba(255,123,184,.16), rgba(112,92,255,.14));
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --shadow: 0 18px 45px rgba(20, 20, 30, .08);
      --shadow-hover: 0 24px 58px rgba(20, 20, 30, .13);
      --sidebar: 260px;
      --speed: .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--ink);
      background:
        radial-gradient(circle at 78% 8%, rgba(255, 123, 184, .18), transparent 34%),
        radial-gradient(circle at 26% 88%, rgba(33, 199, 168, .14), transparent 28%),
        var(--bg);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.65;
      letter-spacing: 0;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--speed), background var(--speed), transform var(--speed), box-shadow var(--speed);
    }

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

    button {
      cursor: pointer;
    }

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

    :focus-visible {
      outline: 3px solid rgba(33, 199, 168, .35);
      outline-offset: 3px;
    }

    .app-shell {
      min-height: 100vh;
      display: flex;
    }

    .sidebar {
      position: fixed;
      inset: 0 auto 0 0;
      z-index: 30;
      width: var(--sidebar);
      padding: 22px 18px;
      background: linear-gradient(180deg, #171821 0%, #202130 62%, #171821 100%);
      color: #fff;
      border-right: 1px solid rgba(255, 255, 255, .08);
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 56px;
      padding: 10px 8px;
      font-weight: 800;
      line-height: 1.22;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 50%;
      background: var(--grad);
      box-shadow: 0 14px 30px rgba(255, 93, 108, .25);
      position: relative;
      overflow: hidden;
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      background: rgba(255, 255, 255, .88);
    }

    .brand-mark::before {
      width: 18px;
      height: 4px;
      left: 12px;
      top: 14px;
      box-shadow: 0 7px 0 rgba(255, 255, 255, .75), 0 14px 0 rgba(255, 255, 255, .55);
    }

    .brand-mark::after {
      width: 7px;
      height: 7px;
      right: 10px;
      bottom: 10px;
    }

    .brand-text {
      font-size: 16px;
      letter-spacing: 0;
    }

    .side-menu {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .side-menu a {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      padding: 11px 13px;
      border-radius: 15px;
      color: rgba(255, 255, 255, .74);
      font-weight: 650;
    }

    .side-menu a::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .35);
      box-shadow: 0 0 0 4px rgba(255, 255, 255, .05);
      flex: 0 0 9px;
    }

    .side-menu a:hover,
    .side-menu a.active {
      color: #fff;
      background: rgba(255, 255, 255, .1);
      transform: translateX(2px);
    }

    .side-menu a.active::before {
      background: var(--mint);
      box-shadow: 0 0 0 5px rgba(33, 199, 168, .16);
    }

    .sidebar-badge {
      margin-top: auto;
      padding: 16px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .1);
    }

    .sidebar-badge strong {
      display: block;
      font-size: 24px;
      line-height: 1.1;
      margin-bottom: 4px;
      color: #fff;
    }

    .sidebar-badge span {
      display: block;
      color: rgba(255, 255, 255, .67);
      font-size: 13px;
      line-height: 1.45;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 25;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: rgba(247, 248, 251, .88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }

    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      line-height: 1.2;
    }

    .menu-button {
      width: 44px;
      height: 44px;
      border: 0;
      border-radius: 14px;
      color: #fff;
      background: var(--grad);
      display: grid;
      place-items: center;
      box-shadow: 0 12px 28px rgba(112, 92, 255, .24);
    }

    .menu-button span,
    .menu-button span::before,
    .menu-button span::after {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 999px;
      background: #fff;
      position: relative;
    }

    .menu-button span::before,
    .menu-button span::after {
      content: "";
      position: absolute;
      left: 0;
    }

    .menu-button span::before {
      top: -6px;
    }

    .menu-button span::after {
      top: 6px;
    }

    .off-canvas {
      background: var(--dark);
      color: #fff;
      padding: 22px 18px;
    }

    .off-canvas .side-menu {
      margin-top: 20px;
    }

    .content-wrap {
      width: 100%;
      margin-left: var(--sidebar);
    }

    .page-main {
      max-width: 1260px;
      margin: 0 auto;
      padding: 34px 38px 0;
    }

    .section {
      margin: 0 0 82px;
    }

    .section-head {
      max-width: 780px;
      margin-bottom: 28px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: #8a254c;
      background: rgba(255, 123, 184, .13);
      border: 1px solid rgba(255, 123, 184, .2);
      font-size: 13px;
      font-weight: 750;
      margin-bottom: 14px;
    }

    .eyebrow::before {
      content: "";
      width: 18px;
      height: 10px;
      border-radius: 999px;
      background: repeating-linear-gradient(90deg, var(--coral) 0 3px, transparent 3px 6px);
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      max-width: 850px;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.16;
      font-weight: 800;
      margin-bottom: 18px;
      letter-spacing: 0;
    }

    h2 {
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.2;
      font-weight: 800;
      margin-bottom: 12px;
      letter-spacing: 0;
    }

    h3 {
      font-size: 20px;
      line-height: 1.28;
      font-weight: 800;
      margin-bottom: 10px;
      letter-spacing: 0;
    }

    .lead {
      max-width: 780px;
      color: var(--muted);
      font-size: 18px;
      line-height: 1.78;
      margin-bottom: 0;
    }

    .hero {
      padding-top: 22px;
      margin-bottom: 72px;
    }

    .hero-panel {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-xl);
      background: linear-gradient(135deg, #ffffff 0%, #fff4f7 48%, #eefdf9 100%);
      border: 1px solid rgba(255, 255, 255, .9);
      box-shadow: var(--shadow);
      padding: 40px;
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: auto -80px -110px auto;
      width: 320px;
      height: 320px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(112, 92, 255, .22), transparent 65%);
      pointer-events: none;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      right: 42px;
      top: 34px;
      width: 190px;
      height: 76px;
      opacity: .16;
      background:
        linear-gradient(90deg, var(--coral) 0 8px, transparent 8px 18px),
        linear-gradient(90deg, var(--mint) 0 6px, transparent 6px 16px);
      background-size: 18px 34px, 16px 22px;
      pointer-events: none;
    }

    .hero-copy,
    .hero-board {
      position: relative;
      z-index: 1;
    }

    .hero-actions,
    .card-actions,
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 19px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 750;
      line-height: 1.2;
      white-space: normal;
      text-align: center;
      transition: transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed), color var(--speed);
    }

    .btn-primary {
      color: #fff;
      background: var(--grad);
      box-shadow: 0 14px 28px rgba(255, 93, 108, .24);
    }

    .btn-primary:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(112, 92, 255, .28);
      filter: brightness(1.03);
    }

    .btn-secondary {
      color: var(--ink);
      background: rgba(255, 255, 255, .72);
      border-color: rgba(112, 92, 255, .18);
    }

    .btn-secondary:hover {
      color: #4d3be0;
      border-color: rgba(112, 92, 255, .38);
      background: #fff;
      transform: translateY(-2px);
    }

    .hero-board {
      display: grid;
      gap: 14px;
    }

    .recommend-card {
      min-height: 230px;
      padding: 26px;
      border-radius: 24px;
      color: #fff;
      background: linear-gradient(135deg, #1f2030, #342655 55%, #ff5d6c);
      box-shadow: 0 22px 46px rgba(31, 32, 48, .24);
    }

    .recommend-card .badge {
      background: rgba(255, 255, 255, .16);
      color: #fff;
      border-color: rgba(255, 255, 255, .18);
    }

    .recommend-card p {
      color: rgba(255, 255, 255, .78);
      margin-bottom: 0;
    }

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

    .entry-mini {
      min-height: 118px;
      padding: 18px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid rgba(29, 31, 42, .08);
      box-shadow: 0 12px 32px rgba(20, 20, 30, .06);
    }

    .entry-mini strong {
      display: block;
      font-size: 16px;
      line-height: 1.3;
      margin-bottom: 6px;
    }

    .entry-mini span {
      display: block;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.55;
    }

    .badge,
    .status-badge,
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      border: 1px solid rgba(29, 31, 42, .1);
      font-weight: 750;
      line-height: 1.2;
    }

    .badge {
      padding: 7px 11px;
      font-size: 13px;
      color: #7b2b55;
      background: rgba(255, 123, 184, .12);
    }

    .status-badge {
      padding: 7px 10px;
      font-size: 12px;
      color: #0a7866;
      background: rgba(33, 199, 168, .13);
      border-color: rgba(33, 199, 168, .2);
    }

    .tag {
      min-height: 38px;
      padding: 8px 14px;
      font-size: 14px;
      color: var(--muted);
      background: #fff;
    }

    .tag.active,
    .tag:hover {
      color: #fff;
      background: var(--grad);
      border-color: transparent;
      transform: translateY(-1px);
    }

    .filter-wrap {
      padding: 18px;
      border-radius: 22px;
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      margin-bottom: 24px;
    }

    .filter-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
    }

    .filter-label {
      color: var(--muted);
      font-weight: 750;
      margin-right: 4px;
    }

    .feature-layout {
      align-items: stretch;
    }

    .feature-card,
    .index-card,
    .path-card,
    .scenario-card,
    .cta-card,
    .faq-card,
    .form-card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed);
    }

    .feature-card:hover,
    .index-card:hover,
    .path-card:hover,
    .scenario-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 123, 184, .24);
    }

    .feature-card {
      height: 100%;
      padding: 30px;
    }

    .feature-card.large {
      min-height: 100%;
      padding: 36px;
      background:
        linear-gradient(135deg, rgba(255, 93, 108, .1), rgba(33, 199, 168, .1)),
        #fff;
    }

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

    .feature-list li {
      display: flex;
      gap: 10px;
      color: var(--muted);
    }

    .feature-list li::before {
      content: "";
      width: 10px;
      height: 10px;
      margin-top: 8px;
      border-radius: 50%;
      background: var(--mint);
      box-shadow: 0 0 0 5px rgba(33, 199, 168, .12);
      flex: 0 0 10px;
    }

    .data-panel {
      overflow: hidden;
      position: relative;
      padding: 34px;
      border-radius: var(--radius-xl);
      background: linear-gradient(135deg, #171821, #2b2444 58%, #4b2d68);
      color: #fff;
      box-shadow: var(--shadow);
    }

    .data-panel::after {
      content: "";
      position: absolute;
      inset: auto 24px 24px auto;
      width: 260px;
      height: 90px;
      opacity: .2;
      background: repeating-linear-gradient(90deg, #fff 0 5px, transparent 5px 16px);
      border-radius: 999px;
      pointer-events: none;
    }

    .data-panel h2,
    .data-panel p,
    .data-panel .metric {
      position: relative;
      z-index: 1;
    }

    .data-panel p {
      color: rgba(255, 255, 255, .72);
      max-width: 760px;
    }

    .metric-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 28px;
    }

    .metric {
      min-height: 150px;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .12);
    }

    .metric strong {
      display: block;
      font-size: 34px;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric span {
      display: block;
      color: rgba(255, 255, 255, .7);
      font-size: 14px;
      line-height: 1.5;
    }

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

    .index-card {
      padding: 24px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
    }

    .index-card p {
      color: var(--muted);
      margin-bottom: 0;
    }

    .card-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 0 0 12px;
    }

    .index-side {
      min-width: 170px;
      padding: 16px;
      border-radius: 18px;
      background: var(--grad-2);
    }

    .index-side strong {
      display: block;
      font-size: 22px;
      line-height: 1.2;
      margin-bottom: 4px;
    }

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

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

    .scenario-card {
      padding: 26px;
      position: relative;
      overflow: hidden;
    }

    .scenario-card::before {
      content: "";
      position: absolute;
      top: 20px;
      right: 22px;
      width: 52px;
      height: 52px;
      border-radius: 18px;
      background:
        linear-gradient(180deg, rgba(255, 93, 108, .9) 0 28%, transparent 28% 40%, rgba(33, 199, 168, .9) 40% 64%, transparent 64% 76%, rgba(112, 92, 255, .9) 76%);
      opacity: .18;
      pointer-events: none;
    }

    .scenario-card p {
      color: var(--muted);
    }

    .path-tabs {
      border: 0;
      background: transparent;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .path-tabs .tabs-title > a {
      border-radius: 999px;
      padding: 12px 17px;
      color: var(--muted);
      background: #fff;
      border: 1px solid var(--line);
      font-weight: 750;
    }

    .path-tabs .tabs-title > a:hover,
    .path-tabs .tabs-title.is-active > a {
      color: #fff;
      background: var(--grad);
      border-color: transparent;
    }

    .tabs-content {
      border: 0;
      background: transparent;
    }

    .tabs-panel {
      padding: 0;
    }

    .path-card {
      padding: 30px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .95), rgba(238, 253, 249, .95)),
        #fff;
    }

    .steps {
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

    .steps li {
      min-height: 130px;
      padding: 18px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--line);
    }

    .step-num {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      margin-bottom: 10px;
      border-radius: 50%;
      color: #fff;
      background: var(--grad);
      font-weight: 800;
    }

    .faq-card {
      padding: 14px;
      border-radius: var(--radius-xl);
    }

    .accordion {
      margin: 0;
      background: transparent;
    }

    .accordion-item {
      border-bottom: 1px solid var(--line);
    }

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

    .accordion-title {
      border: 0;
      color: var(--ink);
      font-size: 17px;
      font-weight: 800;
      line-height: 1.45;
      padding: 20px 48px 20px 18px;
      border-radius: 16px;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      color: #7b2b55;
      background: rgba(255, 123, 184, .1);
    }

    .accordion-title::before {
      font-size: 22px;
      right: 18px;
      margin-top: -13px;
      color: var(--coral);
    }

    .accordion-content {
      border: 0;
      color: var(--muted);
      padding: 0 18px 22px;
      background: transparent;
    }

    .accordion-content p {
      margin: 0;
      padding: 14px 16px;
      border-left: 4px solid var(--mint);
      border-radius: 0 14px 14px 0;
      background: rgba(33, 199, 168, .08);
    }

    .contact-grid {
      align-items: stretch;
    }

    .cta-card {
      height: 100%;
      padding: 34px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 93, 108, .12), rgba(112, 92, 255, .12)),
        #fff;
    }

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

    .cta-list div {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
    }

    .cta-list strong {
      color: var(--ink);
    }

    .form-card {
      padding: 28px;
      border-radius: var(--radius-xl);
    }

    .form-card label {
      color: var(--ink);
      font-weight: 750;
      margin-bottom: 8px;
    }

    .form-card input,
    .form-card select,
    .form-card textarea {
      min-height: 48px;
      border-radius: 14px;
      border: 1px solid rgba(29, 31, 42, .13);
      box-shadow: none;
      background: #fff;
      color: var(--ink);
      transition: border-color var(--speed), box-shadow var(--speed);
    }

    .form-card input:focus,
    .form-card select:focus,
    .form-card textarea:focus {
      border-color: rgba(112, 92, 255, .55);
      box-shadow: 0 0 0 4px rgba(112, 92, 255, .12);
    }

    .form-card textarea {
      min-height: 116px;
      resize: vertical;
    }

    .site-footer {
      margin: 0 -38px;
      padding: 42px 38px 28px;
      background: var(--dark);
      color: #fff;
    }

    .footer-grid {
      max-width: 1260px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 32px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .site-footer p {
      max-width: 620px;
      color: rgba(255, 255, 255, .67);
      margin-bottom: 0;
    }

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

    .footer-links a {
      min-height: 40px;
      display: inline-flex;
      align-items: center;
      padding: 9px 12px;
      border-radius: 999px;
      color: rgba(255, 255, 255, .74);
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .08);
      font-weight: 650;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(255, 255, 255, .13);
      transform: translateY(-1px);
    }

    .copyright {
      max-width: 1260px;
      margin: 28px auto 0;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, .1);
      color: rgba(255, 255, 255, .52);
      font-size: 14px;
    }

    @media (max-width: 1100px) {
      :root {
        --sidebar: 220px;
      }

      .page-main {
        padding: 28px 26px 0;
      }

      .hero-panel {
        padding: 30px;
      }

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

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

      .site-footer {
        margin: 0 -26px;
        padding-left: 26px;
        padding-right: 26px;
      }
    }

    @media (max-width: 900px) {
      .sidebar {
        display: none;
      }

      .mobile-topbar {
        display: flex;
      }

      .content-wrap {
        margin-left: 0;
      }

      .page-main {
        padding-top: 22px;
      }

      .hero {
        padding-top: 4px;
      }

      .section {
        margin-bottom: 62px;
      }

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

      .scenario-grid,
      .entry-grid {
        grid-template-columns: 1fr;
      }

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

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

    @media (max-width: 640px) {
      .page-main {
        padding-left: 16px;
        padding-right: 16px;
      }

      .hero-panel,
      .data-panel,
      .cta-card,
      .form-card,
      .path-card {
        padding: 22px;
        border-radius: 22px;
      }

      h1 {
        font-size: 34px;
      }

      .lead {
        font-size: 16px;
      }

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

      .btn {
        width: 100%;
      }

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

      .filter-wrap {
        padding: 14px;
      }

      .tag {
        flex: 1 1 auto;
        justify-content: center;
      }

      .site-footer {
        margin-left: -16px;
        margin-right: -16px;
        padding-left: 16px;
        padding-right: 16px;
      }
    }