/* roulang page: index */
:root {
      --primary: #6d5dfc;
      --primary-2: #9b5cff;
      --primary-dark: #4d3fe3;
      --secondary: #00c2a8;
      --accent: #ffb84d;
      --danger: #ff5b7f;
      --bg: #f7f8ff;
      --bg-soft: #eef1ff;
      --surface: #ffffff;
      --surface-2: #fbfcff;
      --dark: #111827;
      --text: #273044;
      --muted: #697386;
      --light: #f6f7fb;
      --border: rgba(39, 48, 68, 0.12);
      --border-strong: rgba(109, 93, 252, 0.22);
      --shadow-sm: 0 8px 24px rgba(17, 24, 39, 0.07);
      --shadow-md: 0 18px 45px rgba(44, 54, 92, 0.14);
      --shadow-lg: 0 28px 80px rgba(76, 63, 227, 0.20);
      --radius-sm: 12px;
      --radius: 18px;
      --radius-lg: 28px;
      --radius-xl: 36px;
      --header-height: 76px;
      --gradient: linear-gradient(135deg, #6d5dfc 0%, #9b5cff 48%, #00c2a8 100%);
      --gradient-soft: radial-gradient(circle at 15% 5%, rgba(109, 93, 252, 0.24), transparent 30%),
                       radial-gradient(circle at 86% 12%, rgba(0, 194, 168, 0.22), transparent 26%),
                       linear-gradient(180deg, #fbfcff 0%, #f2f4ff 100%);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      letter-spacing: 0.01em;
      padding-bottom: 88px;
      overflow-x: hidden;
    }

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

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

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

    button,
    input {
      font-family: inherit;
    }

    button:focus,
    input:focus,
    a:focus {
      outline: 3px solid rgba(109, 93, 252, .22);
      outline-offset: 3px;
      border-radius: 12px;
    }

    ::selection {
      background: rgba(109, 93, 252, .22);
      color: var(--dark);
    }

    .container {
      width: min(1180px, calc(100% - 32px));
      max-width: 1180px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, .86);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(39, 48, 68, .08);
      box-shadow: 0 10px 28px rgba(17, 24, 39, .04);
    }

    .navbar {
      min-height: var(--header-height);
      padding: 0;
    }

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

    .brand-icon {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      background: var(--gradient);
      color: #fff;
      display: grid;
      place-items: center;
      box-shadow: 0 14px 28px rgba(109, 93, 252, .26);
    }

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

    .brand-text strong {
      font-size: 1rem;
    }

    .brand-text span {
      font-size: .74rem;
      color: var(--muted);
      font-weight: 700;
      margin-top: 3px;
    }

    .navbar-toggler {
      border: 0;
      width: 44px;
      height: 44px;
      border-radius: 15px;
      background: rgba(109, 93, 252, .09);
      color: var(--primary);
      transition: transform .2s ease, background .2s ease;
    }

    .navbar-toggler:hover {
      transform: translateY(-1px);
      background: rgba(109, 93, 252, .16);
    }

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

    .nav-link {
      color: var(--text);
      font-weight: 800;
      padding: 10px 14px !important;
      border-radius: 999px;
      line-height: 1.2;
      position: relative;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .10);
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: 16px;
    }

    .mini-search {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 7px 10px 7px 14px;
      box-shadow: 0 8px 20px rgba(17, 24, 39, .04);
    }

    .mini-search i {
      color: var(--muted);
      font-size: .9rem;
    }

    .mini-search input {
      width: 150px;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--text);
      font-size: .92rem;
    }

    .mini-search input::placeholder {
      color: #9aa3b4;
    }

    .breadcrumb-wrap {
      background: rgba(247, 248, 255, .92);
      border-bottom: 1px solid rgba(39, 48, 68, .06);
    }

    .breadcrumb {
      margin: 0;
      padding: 10px 0;
      font-size: .88rem;
      color: var(--muted);
    }

    .breadcrumb a {
      color: var(--primary-dark);
      font-weight: 800;
    }

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

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

    .section-tight {
      padding: 56px 0;
    }

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

    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .10);
      font-size: .86rem;
      font-weight: 900;
      margin-bottom: 16px;
    }

    .eyebrow.green {
      color: #008a79;
      background: rgba(0, 194, 168, .12);
    }

    .eyebrow.orange {
      color: #a56500;
      background: rgba(255, 184, 77, .17);
    }

    .section-title {
      margin: 0;
      color: var(--dark);
      font-size: clamp(1.85rem, 3vw, 2.7rem);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: -0.04em;
    }

    .section-desc {
      color: var(--muted);
      font-size: 1.04rem;
      margin: 16px 0 0;
    }

    .btn {
      --bs-btn-padding-x: 20px;
      --bs-btn-padding-y: 12px;
      --bs-btn-border-radius: 999px;
      border: 0;
      font-weight: 900;
      letter-spacing: .01em;
      transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease;
    }

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

    .btn-primary-custom {
      color: #fff;
      background: var(--gradient);
      box-shadow: 0 18px 36px rgba(109, 93, 252, .26);
    }

    .btn-primary-custom:hover,
    .btn-primary-custom:active {
      color: #fff;
      box-shadow: 0 22px 46px rgba(109, 93, 252, .34);
    }

    .btn-soft {
      background: rgba(109, 93, 252, .10);
      color: var(--primary-dark);
    }

    .btn-soft:hover {
      background: rgba(109, 93, 252, .16);
      color: var(--primary-dark);
    }

    .btn-white {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 14px 28px rgba(17, 24, 39, .10);
    }

    .btn-white:hover {
      color: var(--primary-dark);
      box-shadow: 0 18px 36px rgba(17, 24, 39, .14);
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      padding: 7px 11px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid rgba(255, 255, 255, .72);
      color: var(--text);
      font-weight: 850;
      font-size: .86rem;
      box-shadow: 0 10px 26px rgba(17, 24, 39, .06);
    }

    .card-modern {
      background: rgba(255, 255, 255, .9);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
      overflow: hidden;
    }

    .card-modern:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-strong);
    }

    .hero {
      padding: 72px 0 76px;
      background: var(--gradient-soft);
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: auto -140px -260px auto;
      width: 520px;
      height: 520px;
      border-radius: 50%;
      background: rgba(155, 92, 255, .16);
      filter: blur(8px);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, .95fr) minmax(560px, 1.35fr);
      gap: 32px;
      align-items: center;
    }

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

    .hero h1 {
      margin: 0;
      color: var(--dark);
      font-size: clamp(2.25rem, 5.4vw, 4.55rem);
      line-height: 1.04;
      letter-spacing: -0.06em;
      font-weight: 1000;
    }

    .hero-lead {
      margin: 22px 0 0;
      color: var(--muted);
      font-size: 1.12rem;
      max-width: 640px;
    }

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

    .hero-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .plan-stage {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 18px;
      align-items: stretch;
      position: relative;
      z-index: 1;
    }

    .plan-featured {
      min-height: 438px;
      background: linear-gradient(145deg, #191830 0%, #32267a 42%, #6d5dfc 100%);
      color: #fff;
      border-radius: var(--radius-xl);
      padding: 30px;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .plan-featured::after {
      content: "";
      position: absolute;
      right: -90px;
      top: -90px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(0, 194, 168, .34);
      filter: blur(2px);
    }

    .recommend-tag {
      position: relative;
      z-index: 1;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .16);
      color: #fff;
      font-weight: 950;
      font-size: .88rem;
      border: 1px solid rgba(255, 255, 255, .22);
    }

    .plan-featured h2 {
      position: relative;
      z-index: 1;
      font-weight: 1000;
      font-size: clamp(1.75rem, 3vw, 2.45rem);
      line-height: 1.18;
      margin: 24px 0 14px;
      letter-spacing: -0.04em;
    }

    .plan-featured p {
      position: relative;
      z-index: 1;
      margin: 0;
      color: rgba(255, 255, 255, .82);
    }

    .plan-price {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: end;
      gap: 6px;
      margin: 22px 0;
    }

    .plan-price strong {
      font-size: 2.45rem;
      line-height: 1;
      font-weight: 1000;
      letter-spacing: -0.04em;
    }

    .plan-price span {
      color: rgba(255, 255, 255, .7);
      font-weight: 800;
    }

    .feature-checks {
      position: relative;
      z-index: 1;
      display: grid;
      gap: 11px;
      margin: 24px 0 28px;
      padding: 0;
      list-style: none;
    }

    .feature-checks li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(255, 255, 255, .92);
      font-weight: 750;
    }

    .feature-checks i {
      color: #7ff0df;
      margin-top: 5px;
    }

    .plan-side {
      display: grid;
      grid-template-rows: 1fr 1fr;
      gap: 18px;
    }

    .mini-plan {
      background: rgba(255, 255, 255, .88);
      border: 1px solid rgba(109, 93, 252, .14);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }

    .mini-plan h3 {
      margin: 0;
      font-size: 1.25rem;
      font-weight: 950;
      color: var(--dark);
    }

    .mini-plan p {
      margin: 10px 0 16px;
      color: var(--muted);
      font-size: .96rem;
    }

    .mini-plan .line {
      height: 8px;
      border-radius: 999px;
      background: linear-gradient(90deg, rgba(109,93,252,.26), rgba(0,194,168,.26));
      overflow: hidden;
    }

    .mini-plan .line span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: var(--gradient);
    }

    .invite-section {
      background: #fff;
    }

    .invite-layout {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
      align-items: stretch;
    }

    .reward-card {
      padding: 30px;
      min-height: 100%;
      background: linear-gradient(180deg, #ffffff 0%, #fbfcff 100%);
    }

    .reward-list {
      display: grid;
      gap: 16px;
      margin-top: 26px;
    }

    .reward-item {
      display: grid;
      grid-template-columns: 54px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: rgba(247, 248, 255, .72);
    }

    .reward-icon {
      width: 54px;
      height: 54px;
      border-radius: 19px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--gradient);
      box-shadow: 0 14px 28px rgba(109, 93, 252, .20);
    }

    .reward-item h3 {
      margin: 0 0 4px;
      font-size: 1.08rem;
      font-weight: 950;
      color: var(--dark);
    }

    .reward-item p {
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
    }

    .reward-count {
      color: var(--primary-dark);
      font-weight: 1000;
      white-space: nowrap;
    }

    .share-panel {
      padding: 30px;
      color: #fff;
      border-radius: var(--radius-lg);
      background: radial-gradient(circle at 12% 18%, rgba(255,255,255,.22), transparent 28%),
                  linear-gradient(145deg, #111827 0%, #2b255f 52%, #6d5dfc 100%);
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }

    .share-panel h3 {
      margin: 0;
      font-size: 1.55rem;
      font-weight: 1000;
      letter-spacing: -0.03em;
    }

    .share-panel p {
      color: rgba(255, 255, 255, .78);
      margin: 12px 0 22px;
    }

    .invite-code {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      padding: 15px 16px;
      background: rgba(255, 255, 255, .13);
      border: 1px dashed rgba(255, 255, 255, .38);
      border-radius: 18px;
      margin-bottom: 18px;
      font-weight: 950;
    }

    .share-buttons {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }

    .share-mini {
      border: 1px solid rgba(255, 255, 255, .18);
      background: rgba(255, 255, 255, .10);
      color: #fff;
      border-radius: 16px;
      padding: 12px;
      font-weight: 850;
      transition: transform .22s ease, background .22s ease;
      text-align: center;
    }

    .share-mini:hover {
      transform: translateY(-2px);
      background: rgba(255, 255, 255, .17);
      color: #fff;
    }

    .progress-section {
      background: var(--bg);
    }

    .progress-shell {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 24px;
      align-items: center;
    }

    .progress-number {
      padding: 32px;
      background: #fff;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .progress-number .big {
      display: flex;
      align-items: baseline;
      gap: 8px;
      color: var(--dark);
      margin: 8px 0;
    }

    .progress-number .big strong {
      font-size: clamp(3rem, 7vw, 5.5rem);
      font-weight: 1000;
      line-height: .95;
      letter-spacing: -0.08em;
    }

    .progress-number .big span {
      color: var(--muted);
      font-weight: 900;
    }

    .progress-track-card {
      padding: 32px;
      background: linear-gradient(180deg, #fff 0%, #f9faff 100%);
      border-radius: var(--radius-xl);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .custom-progress {
      height: 18px;
      background: #e6e9fb;
      border-radius: 999px;
      overflow: hidden;
      box-shadow: inset 0 1px 2px rgba(17, 24, 39, .06);
    }

    .custom-progress span {
      display: block;
      width: 68%;
      height: 100%;
      border-radius: inherit;
      background: var(--gradient);
      position: relative;
    }

    .custom-progress span::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.42), transparent);
      animation: shimmer 2.8s infinite;
    }

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

    .milestones {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-top: 22px;
    }

    .milestone {
      border: 1px solid var(--border);
      border-radius: 18px;
      padding: 14px;
      background: #fff;
    }

    .milestone.done {
      border-color: rgba(0, 194, 168, .28);
      background: rgba(0, 194, 168, .08);
    }

    .milestone strong {
      display: block;
      color: var(--dark);
      font-size: 1rem;
      margin-bottom: 2px;
      font-weight: 950;
    }

    .milestone span {
      color: var(--muted);
      font-size: .86rem;
      font-weight: 750;
    }

    .ranking-section {
      background: #fff;
    }

    .ranking-layout {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 24px;
      align-items: start;
    }

    .rank-highlight {
      padding: 30px;
      border-radius: var(--radius-xl);
      background: linear-gradient(150deg, rgba(255,184,77,.18), #fff 50%, rgba(109,93,252,.10));
      border: 1px solid rgba(255, 184, 77, .25);
      box-shadow: var(--shadow-sm);
    }

    .rank-highlight .crown {
      width: 72px;
      height: 72px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, #ffb84d, #ff7a59);
      border-radius: 26px;
      box-shadow: 0 18px 34px rgba(255, 126, 82, .22);
      margin-bottom: 18px;
      font-size: 1.8rem;
    }

    .rank-highlight h3 {
      font-size: 1.5rem;
      font-weight: 1000;
      color: var(--dark);
      margin: 0 0 10px;
      letter-spacing: -0.03em;
    }

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

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

    .rank-row {
      display: grid;
      grid-template-columns: 52px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px 18px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 22px;
      box-shadow: 0 8px 18px rgba(17, 24, 39, .04);
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }

    .rank-row:hover {
      transform: translateX(4px);
      border-color: var(--border-strong);
      box-shadow: var(--shadow-sm);
    }

    .rank-no {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      background: rgba(109, 93, 252, .10);
      color: var(--primary-dark);
      font-weight: 1000;
    }

    .rank-row.top .rank-no {
      color: #fff;
      background: var(--gradient);
    }

    .rank-row h4 {
      margin: 0 0 2px;
      font-size: 1.02rem;
      color: var(--dark);
      font-weight: 950;
    }

    .rank-row p {
      margin: 0;
      color: var(--muted);
      font-size: .9rem;
    }

    .rank-score {
      font-weight: 1000;
      color: var(--secondary);
      white-space: nowrap;
    }

    .news-section {
      background: var(--bg);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr);
      gap: 24px;
      align-items: start;
    }

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

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

    .news-list li {
      border-bottom: 1px solid rgba(39, 48, 68, .08);
    }

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

    .news-link {
      display: grid;
      grid-template-columns: 92px 1fr auto;
      gap: 18px;
      padding: 20px 22px;
      align-items: center;
      color: var(--text);
    }

    .news-link:hover {
      background: rgba(109, 93, 252, .045);
      color: var(--primary-dark);
    }

    .news-date {
      color: var(--muted);
      font-weight: 850;
      font-size: .9rem;
    }

    .news-title {
      font-weight: 950;
      color: var(--dark);
      line-height: 1.45;
    }

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

    .news-tag {
      justify-self: end;
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .10);
      padding: 6px 10px;
      border-radius: 999px;
      font-size: .82rem;
      font-weight: 900;
      white-space: nowrap;
    }

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

    .recommend-box h3 {
      margin: 0 0 16px;
      font-size: 1.22rem;
      font-weight: 1000;
      color: var(--dark);
      letter-spacing: -0.02em;
    }

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

    .topic-list a {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 14px 15px;
      border-radius: 17px;
      background: rgba(247, 248, 255, .86);
      border: 1px solid rgba(39, 48, 68, .08);
      font-weight: 850;
    }

    .topic-list a:hover {
      background: rgba(109, 93, 252, .10);
      transform: translateY(-2px);
    }

    .topic-list span {
      color: var(--muted);
      font-weight: 800;
      white-space: nowrap;
    }

    .guide-section {
      background: #fff;
    }

    .guide-flow {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 24px;
      align-items: center;
    }

    .guide-panel {
      padding: 32px;
      background: linear-gradient(145deg, #f8f9ff, #ffffff);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
    }

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

    .step-item {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 14px;
      align-items: start;
      padding: 18px;
      border-radius: 22px;
      border: 1px solid var(--border);
      background: #fff;
    }

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 17px;
      background: rgba(109, 93, 252, .10);
      color: var(--primary-dark);
      display: grid;
      place-items: center;
      font-weight: 1000;
    }

    .step-item h3 {
      margin: 0 0 4px;
      font-size: 1.05rem;
      color: var(--dark);
      font-weight: 950;
    }

    .step-item p {
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
    }

    .preview-board {
      min-height: 420px;
      padding: 26px;
      border-radius: var(--radius-xl);
      background: radial-gradient(circle at 75% 10%, rgba(0,194,168,.22), transparent 28%),
                  linear-gradient(145deg, #17162b, #33276d);
      color: #fff;
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }

    .preview-board::after {
      content: "";
      position: absolute;
      inset: auto -40px -75px auto;
      width: 220px;
      height: 220px;
      background: rgba(155, 92, 255, .34);
      border-radius: 50%;
      filter: blur(1px);
    }

    .preview-card {
      position: relative;
      z-index: 1;
      padding: 18px;
      background: rgba(255, 255, 255, .11);
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: 22px;
      margin-bottom: 14px;
      backdrop-filter: blur(8px);
    }

    .preview-card h4 {
      margin: 0 0 8px;
      color: #fff;
      font-weight: 950;
    }

    .preview-card p {
      margin: 0;
      color: rgba(255, 255, 255, .76);
      font-size: .94rem;
    }

    .live-section {
      background: var(--bg);
    }

    .live-card {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 0;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-md);
    }

    .live-cover {
      min-height: 360px;
      padding: 30px;
      color: #fff;
      background: radial-gradient(circle at 20% 20%, rgba(255,255,255,.2), transparent 22%),
                  linear-gradient(145deg, #6d5dfc 0%, #9b5cff 54%, #111827 100%);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .live-cover::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -60px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: rgba(0, 194, 168, .32);
    }

    .countdown {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      max-width: 320px;
    }

    .time-cell {
      padding: 14px 8px;
      text-align: center;
      background: rgba(255, 255, 255, .15);
      border: 1px solid rgba(255, 255, 255, .20);
      border-radius: 18px;
    }

    .time-cell strong {
      display: block;
      font-size: 1.55rem;
      line-height: 1;
      font-weight: 1000;
    }

    .time-cell span {
      color: rgba(255, 255, 255, .76);
      font-size: .82rem;
      font-weight: 850;
    }

    .live-info {
      padding: 32px;
    }

    .live-info h3 {
      margin: 0 0 12px;
      color: var(--dark);
      font-weight: 1000;
      font-size: 1.75rem;
      letter-spacing: -0.03em;
    }

    .live-info p {
      color: var(--muted);
      margin-bottom: 22px;
    }

    .watch-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin: 0 0 24px;
      padding: 0;
      list-style: none;
    }

    .watch-list li {
      display: flex;
      gap: 10px;
      padding: 14px;
      border-radius: 18px;
      background: rgba(247, 248, 255, .88);
      border: 1px solid rgba(39, 48, 68, .08);
      font-weight: 850;
      color: var(--text);
    }

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

    .trust-section {
      background: #fff;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 24px;
      align-items: stretch;
    }

    .trust-score {
      padding: 32px;
      background: linear-gradient(150deg, #fff, #f7f8ff);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-sm);
    }

    .stars {
      color: #ffb84d;
      font-size: 1.3rem;
      letter-spacing: 2px;
      margin: 12px 0 16px;
    }

    .trust-score strong {
      display: block;
      color: var(--dark);
      font-size: 3rem;
      line-height: 1;
      font-weight: 1000;
      letter-spacing: -0.06em;
    }

    .trust-score p {
      color: var(--muted);
      margin: 12px 0 0;
    }

    .logo-wall {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }

    .logo-chip {
      min-height: 86px;
      padding: 16px;
      display: grid;
      place-items: center;
      text-align: center;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: #fff;
      box-shadow: 0 8px 18px rgba(17, 24, 39, .04);
      color: var(--text);
      font-weight: 950;
    }

    .logo-chip span {
      display: block;
      color: var(--muted);
      font-size: .82rem;
      font-weight: 750;
      margin-top: 4px;
    }

    .faq-section {
      background: var(--bg);
    }

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

    .accordion-item {
      border: 1px solid var(--border) !important;
      border-radius: 22px !important;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 10px 24px rgba(17, 24, 39, .04);
    }

    .accordion-button {
      padding: 20px 22px;
      color: var(--dark);
      background: #fff;
      font-weight: 950;
      line-height: 1.5;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary-dark);
      background: rgba(109, 93, 252, .06);
    }

    .accordion-button::after {
      filter: hue-rotate(210deg) saturate(1.7);
    }

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

    .cta-section {
      padding: 78px 0;
      background: #fff;
    }

    .cta-card {
      position: relative;
      overflow: hidden;
      padding: 44px;
      border-radius: var(--radius-xl);
      background: radial-gradient(circle at 15% 15%, rgba(255,255,255,.22), transparent 24%),
                  linear-gradient(135deg, #111827 0%, #34276e 48%, #6d5dfc 100%);
      color: #fff;
      box-shadow: var(--shadow-lg);
    }

    .cta-card::after {
      content: "";
      position: absolute;
      width: 280px;
      height: 280px;
      border-radius: 50%;
      right: -80px;
      top: -70px;
      background: rgba(0, 194, 168, .30);
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .cta-card h2 {
      margin: 0;
      font-weight: 1000;
      font-size: clamp(1.85rem, 3.4vw, 3rem);
      line-height: 1.12;
      letter-spacing: -0.05em;
    }

    .cta-card p {
      max-width: 720px;
      color: rgba(255, 255, 255, .78);
      margin: 14px 0 0;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .site-footer {
      background: #0f1220;
      color: rgba(255, 255, 255, .78);
      padding: 50px 0 34px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 32px;
      align-items: start;
    }

    .footer-brand {
      display: flex;
      gap: 13px;
      align-items: center;
      color: #fff;
      font-weight: 1000;
      margin-bottom: 14px;
    }

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

    .footer-desc {
      max-width: 620px;
      margin: 0;
      color: rgba(255, 255, 255, .66);
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
      margin-bottom: 16px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .78);
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .06);
      font-weight: 850;
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(255, 255, 255, .12);
    }

    .copyright {
      margin: 18px 0 0;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .10);
      color: rgba(255, 255, 255, .52);
      font-size: .9rem;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    .sticky-conversion {
      position: fixed;
      left: 50%;
      bottom: 16px;
      transform: translateX(-50%);
      width: min(1080px, calc(100% - 28px));
      z-index: 1040;
      background: rgba(17, 24, 39, .90);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 999px;
      box-shadow: 0 24px 60px rgba(17, 24, 39, .34);
      backdrop-filter: blur(18px);
      padding: 12px 14px 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

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

    .sticky-copy i {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #111827;
      background: #7ff0df;
      flex: 0 0 auto;
    }

    .sticky-copy strong {
      display: block;
      font-weight: 1000;
      line-height: 1.2;
    }

    .sticky-copy span {
      display: block;
      color: rgba(255, 255, 255, .66);
      font-size: .88rem;
      line-height: 1.3;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 580px;
    }

    .sticky-conversion .btn {
      flex: 0 0 auto;
      padding: 10px 18px;
    }

    @media (max-width: 1024px) {
      .hero-grid,
      .invite-layout,
      .progress-shell,
      .ranking-layout,
      .news-layout,
      .guide-flow,
      .live-card,
      .trust-grid {
        grid-template-columns: 1fr;
      }

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

      .plan-featured {
        min-height: auto;
      }

      .plan-side {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
      }

      .live-cover {
        min-height: 300px;
      }

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

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

      .sticky-copy span {
        max-width: 420px;
      }
    }

    @media (max-width: 768px) {
      body {
        padding-bottom: 112px;
      }

      .container {
        width: min(100% - 24px, 1180px);
      }

      .navbar-collapse {
        padding: 14px 0 18px;
      }

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

      .nav-action {
        margin: 12px 0 0;
        flex-direction: column;
        align-items: stretch;
      }

      .mini-search {
        width: 100%;
      }

      .mini-search input {
        width: 100%;
      }

      .section {
        padding: 58px 0;
      }

      .section-tight {
        padding: 42px 0;
      }

      .hero {
        padding: 50px 0 56px;
      }

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

      .btn {
        width: 100%;
      }

      .plan-side,
      .milestones,
      .watch-list,
      .logo-wall {
        grid-template-columns: 1fr;
      }

      .reward-item,
      .rank-row,
      .news-link {
        grid-template-columns: 1fr;
      }

      .reward-count,
      .news-tag {
        justify-self: start;
      }

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

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

      .cta-card {
        padding: 32px 24px;
      }

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

      .sticky-copy span {
        white-space: normal;
        max-width: none;
      }
    }

    @media (max-width: 520px) {
      :root {
        --header-height: 66px;
      }

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

      .brand-text strong {
        font-size: .92rem;
      }

      .brand-text span {
        display: none;
      }

      .hero h1 {
        font-size: 2.2rem;
      }

      .hero-lead,
      .section-desc {
        font-size: .98rem;
      }

      .plan-featured,
      .reward-card,
      .share-panel,
      .progress-number,
      .progress-track-card,
      .rank-highlight,
      .recommend-box,
      .guide-panel,
      .preview-board,
      .live-info,
      .trust-score {
        padding: 22px;
        border-radius: 24px;
      }

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

      .copyright {
        display: block;
      }

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

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}