/* roulang page: index */
:root {
      --color-primary: #7c3aed;
      --color-primary-dark: #5b21b6;
      --color-primary-soft: #ede9fe;
      --color-accent: #f59e0b;
      --color-accent-soft: #fff7ed;
      --color-ink: #111827;
      --color-text: #263241;
      --color-muted: #687385;
      --color-light: #f7f7fb;
      --color-panel: #ffffff;
      --color-line: rgba(17, 24, 39, .10);
      --color-line-strong: rgba(17, 24, 39, .16);
      --color-success: #10b981;
      --color-danger: #ef4444;
      --radius-xs: 10px;
      --radius-sm: 14px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --shadow-xs: 0 6px 18px rgba(17, 24, 39, .06);
      --shadow-sm: 0 14px 34px rgba(17, 24, 39, .08);
      --shadow-md: 0 24px 60px rgba(17, 24, 39, .12);
      --shadow-glow: 0 22px 70px rgba(124, 58, 237, .24);
      --container: 1180px;
      --nav-height: 78px;
      --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      --ease: cubic-bezier(.2, .8, .2, 1);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: var(--font-main);
      color: var(--color-text);
      line-height: 1.75;
      background:
        radial-gradient(circle at 10% 0%, rgba(124, 58, 237, .12), transparent 32rem),
        radial-gradient(circle at 90% 10%, rgba(245, 158, 11, .12), transparent 30rem),
        linear-gradient(180deg, #fbfbff 0%, #f7f7fb 42%, #ffffff 100%);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
    }

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

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

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

    button,
    .button {
      cursor: pointer;
    }

    input,
    textarea,
    select {
      width: 100%;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, .88);
      color: var(--color-ink);
      padding: 13px 15px;
      outline: none;
      transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
    }

    input::placeholder,
    textarea::placeholder {
      color: #9aa3b2;
    }

    input:focus,
    textarea:focus,
    select:focus,
    button:focus-visible,
    a:focus-visible {
      outline: 0;
      border-color: rgba(124, 58, 237, .55);
      box-shadow: 0 0 0 4px rgba(124, 58, 237, .16);
    }

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

    h1,
    h2,
    h3,
    h4,
    p {
      margin-top: 0;
    }

    h1,
    h2,
    h3,
    h4 {
      color: var(--color-ink);
      letter-spacing: -.04em;
      line-height: 1.12;
      font-weight: 800;
    }

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

    .site-wrap {
      overflow: hidden;
    }

    .container {
      width: min(calc(100% - 40px), var(--container));
      margin-inline: auto;
    }

    .section {
      padding: 84px 0;
      position: relative;
    }

    .section-tight {
      padding: 58px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 26px;
      margin-bottom: 30px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-primary);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: .08em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-kicker i {
      color: var(--color-accent);
    }

    .section-title {
      font-size: clamp(28px, 4vw, 46px);
      margin-bottom: 12px;
    }

    .section-desc {
      max-width: 720px;
      font-size: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 46px;
      padding: 12px 19px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1;
      white-space: nowrap;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--color-primary), #9f67ff);
      color: #fff;
      box-shadow: 0 16px 32px rgba(124, 58, 237, .24);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-glow);
    }

    .btn-secondary {
      background: #fff;
      color: var(--color-ink);
      border-color: var(--color-line);
      box-shadow: var(--shadow-xs);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
      color: var(--color-primary);
      border-color: rgba(124, 58, 237, .28);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .btn-ghost {
      background: rgba(124, 58, 237, .09);
      color: var(--color-primary-dark);
      border-color: rgba(124, 58, 237, .12);
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      background: rgba(124, 58, 237, .14);
      color: var(--color-primary-dark);
      transform: translateY(-1px);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid rgba(255, 255, 255, .7);
      color: var(--color-primary-dark);
      font-weight: 800;
      font-size: 13px;
      box-shadow: 0 10px 26px rgba(17, 24, 39, .06);
      backdrop-filter: blur(14px);
    }

    .badge.dark {
      background: rgba(17, 24, 39, .78);
      border-color: rgba(255, 255, 255, .14);
      color: #fff;
    }

    .card {
      background: rgba(255, 255, 255, .86);
      border: 1px solid var(--color-line);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-xs);
      transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(124, 58, 237, .20);
      background: #fff;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      height: var(--nav-height);
      background: rgba(255, 255, 255, .76);
      border-bottom: 1px solid rgba(17, 24, 39, .08);
      backdrop-filter: blur(18px);
    }

    .nav-bar {
      height: var(--nav-height);
      display: grid;
      grid-template-columns: auto minmax(280px, 1fr) auto;
      align-items: center;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(124, 58, 237, 1), rgba(245, 158, 11, .92)),
        radial-gradient(circle at 20% 20%, #fff, transparent 34%);
      box-shadow: 0 14px 34px rgba(124, 58, 237, .22);
      flex: 0 0 auto;
    }

    .brand-name {
      font-size: 18px;
      font-weight: 900;
      color: var(--color-ink);
      letter-spacing: -.04em;
      white-space: nowrap;
    }

    .nav-search {
      position: relative;
      display: flex;
      align-items: center;
      max-width: 620px;
      justify-self: center;
      width: 100%;
    }

    .nav-search i {
      position: absolute;
      left: 16px;
      color: #8b94a5;
      pointer-events: none;
    }

    .nav-search input {
      height: 46px;
      padding-left: 44px;
      padding-right: 112px;
      border-radius: 999px;
      background: rgba(247, 247, 251, .92);
      border-color: rgba(17, 24, 39, .10);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .8);
    }

    .nav-search button {
      position: absolute;
      right: 5px;
      height: 36px;
      padding: 0 16px;
      border-radius: 999px;
      border: 0;
      background: var(--color-ink);
      color: #fff;
      font-weight: 800;
      transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
    }

    .nav-search button:hover {
      background: var(--color-primary);
      transform: translateY(-1px);
      box-shadow: 0 12px 26px rgba(124, 58, 237, .24);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      justify-content: flex-end;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      height: 40px;
      padding: 0 14px;
      border-radius: 999px;
      color: var(--color-muted);
      font-weight: 800;
      font-size: 14px;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--color-primary-dark);
      background: rgba(124, 58, 237, .10);
    }

    .mobile-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--color-line);
      border-radius: 14px;
      background: #fff;
      color: var(--color-ink);
      align-items: center;
      justify-content: center;
    }

    .hero {
      padding: 72px 0 56px;
    }

    .invite-stage {
      position: relative;
      border-radius: 34px;
      overflow: hidden;
      background:
        linear-gradient(120deg, rgba(17, 24, 39, .88), rgba(76, 29, 149, .90)),
        radial-gradient(circle at 80% 20%, rgba(245, 158, 11, .60), transparent 28rem),
        radial-gradient(circle at 25% 0%, rgba(124, 58, 237, .75), transparent 24rem);
      box-shadow: 0 36px 90px rgba(17, 24, 39, .24);
      min-height: 520px;
    }

    .invite-stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(90deg, rgba(0,0,0,.8), rgba(0,0,0,.15));
    }

    .invite-stage::after {
      content: "";
      position: absolute;
      right: -130px;
      top: -130px;
      width: 360px;
      height: 360px;
      border-radius: 999px;
      border: 52px solid rgba(255, 255, 255, .08);
      animation: floatRing 8s ease-in-out infinite;
    }

    @keyframes floatRing {
      0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
      50% { transform: translate3d(-16px, 18px, 0) rotate(8deg); }
    }

    .invite-content {
      position: relative;
      z-index: 1;
      padding: clamp(30px, 5vw, 62px);
      min-height: 520px;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 36px;
      align-items: center;
    }

    .hero-copy {
      max-width: 690px;
    }

    .hero h1 {
      font-size: clamp(38px, 7vw, 76px);
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: -.07em;
    }

    .hero-lead {
      color: rgba(255, 255, 255, .82);
      font-size: 18px;
      max-width: 660px;
      margin-bottom: 26px;
    }

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

    .hero-actions .btn-secondary {
      background: rgba(255, 255, 255, .12);
      color: #fff;
      border-color: rgba(255, 255, 255, .18);
      box-shadow: none;
    }

    .hero-actions .btn-secondary:hover {
      background: rgba(255, 255, 255, .18);
      color: #fff;
    }

    .hero-points {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .hero-point {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: rgba(255, 255, 255, .84);
      font-size: 14px;
      font-weight: 700;
      padding: 9px 12px;
      border: 1px solid rgba(255, 255, 255, .14);
      background: rgba(255, 255, 255, .08);
      border-radius: 999px;
      backdrop-filter: blur(12px);
    }

    .hero-point i {
      color: #fbbf24;
    }

    .invite-panel {
      align-self: stretch;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .progress-card {
      width: min(100%, 430px);
      padding: 26px;
      border-radius: 28px;
      background: rgba(255, 255, 255, .92);
      border: 1px solid rgba(255, 255, 255, .55);
      box-shadow: 0 28px 80px rgba(0, 0, 0, .20);
      backdrop-filter: blur(18px);
    }

    .progress-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 18px;
    }

    .progress-top h2 {
      font-size: 25px;
      margin-bottom: 6px;
    }

    .progress-top p {
      font-size: 14px;
    }

    .progress-token {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--color-accent), #fb7185);
      box-shadow: 0 18px 38px rgba(245, 158, 11, .28);
      flex: 0 0 auto;
    }

    .progress-meta {
      display: flex;
      justify-content: space-between;
      margin-bottom: 10px;
      color: var(--color-muted);
      font-weight: 800;
      font-size: 13px;
    }

    .progress-track {
      height: 14px;
      border-radius: 999px;
      background: #eceef5;
      overflow: hidden;
      position: relative;
      margin-bottom: 18px;
    }

    .progress-fill {
      width: 68%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
      position: relative;
    }

    .progress-fill::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.45), transparent);
      animation: shine 2.6s linear infinite;
    }

    @keyframes shine {
      0% { transform: translateX(-100%); }
      100% { transform: translateX(100%); }
    }

    .reward-list {
      display: grid;
      gap: 10px;
      margin: 0 0 20px;
      padding: 0;
      list-style: none;
    }

    .reward-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 12px;
      border-radius: 16px;
      background: rgba(124, 58, 237, .07);
      color: var(--color-text);
      font-weight: 700;
      font-size: 14px;
    }

    .reward-list i {
      color: var(--color-success);
      margin-top: 3px;
    }

    .invite-code {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 11px 13px;
      border: 1px dashed rgba(124, 58, 237, .34);
      border-radius: 16px;
      background: #faf9ff;
      color: var(--color-muted);
      font-size: 13px;
      margin-bottom: 16px;
    }

    .invite-code strong {
      color: var(--color-ink);
      letter-spacing: .08em;
    }

    .directory-wrap {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 24px;
      align-items: stretch;
    }

    .directory-aside {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: var(--color-ink);
      color: #fff;
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }

    .directory-aside::after {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 999px;
      background: rgba(124, 58, 237, .42);
      right: -90px;
      bottom: -90px;
      filter: blur(2px);
    }

    .directory-aside h2 {
      color: #fff;
      font-size: 34px;
      margin-bottom: 14px;
      position: relative;
      z-index: 1;
    }

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

    .directory-tags {
      position: relative;
      z-index: 1;
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 24px;
    }

    .directory-tags span {
      padding: 8px 11px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .12);
      color: rgba(255, 255, 255, .86);
      font-weight: 700;
      font-size: 13px;
    }

    .directory-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .directory-card {
      padding: 22px;
      min-height: 162px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .directory-card .icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      margin-bottom: 18px;
    }

    .directory-card h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }

    .directory-card p {
      font-size: 14px;
    }

    .recommend-layout {
      display: grid;
      grid-template-columns: 1.14fr .86fr;
      gap: 22px;
    }

    .featured-recommend {
      padding: 30px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(124, 58, 237, .10), rgba(245, 158, 11, .12)),
        #fff;
      border: 1px solid rgba(124, 58, 237, .15);
      box-shadow: var(--shadow-sm);
    }

    .featured-recommend h3 {
      font-size: 30px;
      margin-bottom: 12px;
    }

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

    .feature-chip {
      padding: 15px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .74);
      border: 1px solid rgba(255, 255, 255, .72);
    }

    .feature-chip strong {
      display: block;
      color: var(--color-ink);
      font-size: 18px;
      margin-bottom: 4px;
    }

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

    .recommend-list {
      display: grid;
      gap: 14px;
    }

    .recommend-item {
      padding: 18px;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      align-items: start;
    }

    .recommend-rank {
      width: 34px;
      height: 34px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      background: var(--color-ink);
      color: #fff;
      font-weight: 900;
      font-size: 13px;
    }

    .recommend-item h3 {
      font-size: 18px;
      margin-bottom: 5px;
    }

    .recommend-item p {
      font-size: 14px;
    }

    .calendar-strip {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 16px;
    }

    .calendar-card {
      padding: 21px;
      position: relative;
      overflow: hidden;
    }

    .calendar-date {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 62px;
      height: 62px;
      border-radius: 19px;
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      margin-bottom: 16px;
      font-weight: 900;
      line-height: 1.05;
    }

    .calendar-date span {
      font-size: 12px;
      color: var(--color-muted);
      margin-top: 4px;
    }

    .calendar-card h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }

    .calendar-card p {
      font-size: 14px;
    }

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

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

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

    .compare-cell {
      padding: 18px 20px;
      border-right: 1px solid var(--color-line);
      min-height: 74px;
      display: flex;
      align-items: center;
      color: var(--color-muted);
      font-weight: 700;
    }

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

    .compare-head .compare-cell {
      background: #111827;
      color: #fff;
      font-weight: 900;
    }

    .compare-cell.highlight {
      color: var(--color-primary-dark);
      background: rgba(124, 58, 237, .06);
    }

    .compare-cell i {
      margin-right: 9px;
    }

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

    .benefit-card {
      padding: 22px;
    }

    .benefit-card i {
      width: 44px;
      height: 44px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
      margin-bottom: 16px;
    }

    .benefit-card h3 {
      font-size: 19px;
      margin-bottom: 8px;
    }

    .benefit-card p {
      font-size: 14px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 24px;
      align-items: start;
    }

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

    .news-item {
      display: grid;
      grid-template-columns: 116px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid var(--color-line);
      transition: background .2s var(--ease);
    }

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

    .news-item:hover {
      background: #faf9ff;
    }

    .news-date {
      color: var(--color-primary-dark);
      font-weight: 900;
      font-size: 14px;
    }

    .news-title {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--color-ink);
      font-weight: 900;
      line-height: 1.35;
    }

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

    .news-summary {
      margin-top: 5px;
      font-size: 14px;
      color: var(--color-muted);
    }

    .news-arrow {
      width: 38px;
      height: 38px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: var(--color-light);
      color: var(--color-muted);
      transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
    }

    .news-item:hover .news-arrow {
      transform: translateX(3px);
      background: var(--color-primary);
      color: #fff;
    }

    .news-side {
      padding: 24px;
      background: var(--color-ink);
      color: #fff;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }

    .news-side h3 {
      color: #fff;
      font-size: 24px;
      margin-bottom: 12px;
    }

    .news-side p {
      color: rgba(255, 255, 255, .72);
      margin-bottom: 18px;
    }

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

    .side-mini-list li {
      display: flex;
      gap: 10px;
      color: rgba(255, 255, 255, .86);
      font-weight: 700;
      font-size: 14px;
    }

    .side-mini-list i {
      color: var(--color-accent);
      margin-top: 5px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 26px;
      align-items: start;
    }

    .faq-panel {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #fff, #faf9ff);
      border: 1px solid rgba(124, 58, 237, .14);
      box-shadow: var(--shadow-xs);
      position: sticky;
      top: calc(var(--nav-height) + 20px);
    }

    .faq-panel h2 {
      font-size: 34px;
      margin-bottom: 14px;
    }

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

    .accordion-item {
      border: 1px solid var(--color-line);
      border-radius: 18px;
      overflow: hidden;
      margin-bottom: 12px;
      background: #fff;
      box-shadow: var(--shadow-xs);
    }

    .accordion-title {
      border: 0;
      color: var(--color-ink);
      font-weight: 900;
      font-size: 16px;
      padding: 18px 48px 18px 20px;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: #faf9ff;
      color: var(--color-primary-dark);
    }

    .accordion-title::before {
      right: 20px;
      margin-top: -8px;
      color: var(--color-primary);
      font-weight: 900;
    }

    .accordion-content {
      border: 0;
      padding: 0 20px 20px;
      color: var(--color-muted);
      line-height: 1.8;
    }

    .share-band {
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(124, 58, 237, .94), rgba(17, 24, 39, .96)),
        radial-gradient(circle at 15% 20%, rgba(245, 158, 11, .8), transparent 20rem);
      padding: 34px;
      color: #fff;
      box-shadow: var(--shadow-md);
      overflow: hidden;
      position: relative;
    }

    .share-band::after {
      content: "";
      position: absolute;
      inset: auto -90px -160px auto;
      width: 320px;
      height: 320px;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
    }

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

    .share-band h2 {
      color: #fff;
      font-size: clamp(28px, 4vw, 44px);
      margin-bottom: 12px;
    }

    .share-band p {
      color: rgba(255, 255, 255, .78);
      max-width: 690px;
    }

    .share-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
    }

    .share-actions .btn-secondary {
      background: rgba(255, 255, 255, .12);
      color: #fff;
      border-color: rgba(255, 255, 255, .18);
      box-shadow: none;
    }

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

    .share-box {
      padding: 18px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .14);
      backdrop-filter: blur(12px);
    }

    .share-box strong {
      color: #fff;
      font-size: 20px;
      display: block;
      margin-bottom: 4px;
    }

    .share-box span {
      color: rgba(255, 255, 255, .72);
      font-size: 13px;
      font-weight: 700;
    }

    .trial-wrap {
      display: grid;
      grid-template-columns: 1fr 420px;
      gap: 24px;
      align-items: start;
    }

    .trial-info {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-sm);
    }

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

    .trial-mini {
      padding: 16px;
      border-radius: 18px;
      background: var(--color-light);
      border: 1px solid var(--color-line);
    }

    .trial-mini h3 {
      font-size: 18px;
      margin-bottom: 7px;
    }

    .trial-mini p {
      font-size: 14px;
    }

    .trial-form {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #ffffff, #fbfaff);
      border: 1px solid rgba(124, 58, 237, .16);
      box-shadow: var(--shadow-sm);
    }

    .trial-form h3 {
      font-size: 24px;
      margin-bottom: 8px;
    }

    .form-row {
      margin-bottom: 14px;
    }

    .form-row label {
      display: block;
      color: var(--color-ink);
      font-weight: 900;
      font-size: 13px;
      margin-bottom: 7px;
    }

    .form-note {
      color: var(--color-muted);
      font-size: 13px;
      margin-top: 12px;
    }

    .site-footer {
      padding: 52px 0 30px;
      background: #0b1020;
      color: rgba(255, 255, 255, .72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr .8fr;
      gap: 30px;
      align-items: start;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 13px;
    }

    .footer-desc {
      max-width: 660px;
      color: rgba(255,255,255,.68);
    }

    .footer-links {
      display: flex;
      justify-content: flex-end;
      gap: 12px;
      flex-wrap: wrap;
    }

    .footer-links a {
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.07);
      color: rgba(255,255,255,.76);
      font-weight: 800;
      font-size: 14px;
    }

    .footer-links a:hover {
      background: rgba(124, 58, 237, .38);
      color: #fff;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
      padding-top: 22px;
      font-size: 13px;
      color: rgba(255,255,255,.54);
    }

    .footer-bottom strong {
      color: rgba(255,255,255,.82);
    }

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

      .site-header {
        height: auto;
      }

      .nav-bar {
        height: auto;
        grid-template-columns: 1fr auto;
        padding: 14px 0;
      }

      .nav-search {
        grid-column: 1 / -1;
        order: 3;
        max-width: none;
      }

      .nav-links {
        display: none;
      }

      .mobile-toggle {
        display: inline-flex;
      }

      .invite-content,
      .directory-wrap,
      .recommend-layout,
      .news-layout,
      .faq-wrap,
      .share-grid,
      .trial-wrap {
        grid-template-columns: 1fr;
      }

      .invite-panel {
        justify-content: flex-start;
      }

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

      .faq-panel {
        position: static;
      }

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

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

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

    @media screen and (max-width: 768px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

      .section {
        padding: 62px 0;
      }

      .hero {
        padding: 36px 0 44px;
      }

      .section-head {
        display: block;
      }

      .invite-stage {
        border-radius: 26px;
      }

      .invite-content {
        padding: 24px;
        min-height: auto;
      }

      .hero h1 {
        font-size: 40px;
      }

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

      .directory-grid,
      .feature-grid,
      .calendar-strip,
      .benefit-grid,
      .share-boxes {
        grid-template-columns: 1fr;
      }

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

      .compare-cell {
        border-right: 0;
        border-bottom: 1px solid var(--color-line);
      }

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

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

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

      .share-band {
        padding: 24px;
        border-radius: 26px;
      }
    }

    @media screen and (max-width: 520px) {
      .brand-name {
        font-size: 16px;
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

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

      .nav-search input {
        padding-right: 86px;
      }

      .nav-search button {
        padding: 0 12px;
      }

      .hero-actions,
      .share-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .progress-card {
        padding: 20px;
        border-radius: 22px;
      }

      .directory-aside,
      .featured-recommend,
      .trial-info,
      .trial-form {
        padding: 22px;
      }

      .footer-bottom {
        display: block;
      }

      .footer-bottom span {
        display: block;
        margin-top: 8px;
      }
    }