/* roulang page: index */
:root {
      --ink: #17151d;
      --muted: #716b78;
      --paper: #fffaf7;
      --soft: #f7f0ee;
      --line: #eadedb;
      --primary: #ed4f71;
      --primary-deep: #bb2d54;
      --accent: #ffb155;
      --night: #25202d;
      --white: #ffffff;
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 11px;
      --shadow: 0 20px 60px rgba(58, 28, 42, .12);
      --shadow-soft: 0 10px 30px rgba(58, 28, 42, .08);
      --container: 1180px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.7;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; border: 0; }
    :focus-visible { outline: 3px solid rgba(237, 79, 113, .38); outline-offset: 4px; }

    .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary-deep);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      border-radius: 99px;
      background: var(--primary);
    }
    h1, h2, h3 { line-height: 1.18; letter-spacing: -.025em; }
    h1 { font-size: clamp(42px, 6vw, 76px); max-width: 780px; }
    h2 { font-size: clamp(30px, 4vw, 48px); }
    h3 { font-size: 21px; }
    .section { padding: 108px 0; }
    .section-heading { max-width: 680px; margin-bottom: 44px; }
    .section-heading p { margin-top: 16px; color: var(--muted); font-size: 17px; }
    .gradient-text {
      background: linear-gradient(100deg, var(--primary-deep), var(--primary), #e8954d);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 250, 247, .88);
      border-bottom: 1px solid rgba(234, 222, 219, .8);
      backdrop-filter: blur(18px);
    }
    .nav {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      min-width: 230px;
      font-weight: 850;
      font-size: 16px;
      letter-spacing: -.03em;
    }
    .brand-mark {
      width: 36px;
      height: 36px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: linear-gradient(135deg, var(--primary), var(--primary-deep));
      border-radius: 12px;
      box-shadow: 0 8px 18px rgba(237, 79, 113, .25);
    }
    .nav-links { display: flex; align-items: center; gap: 7px; }
    .nav-links a {
      padding: 9px 14px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      border-radius: 10px;
      transition: .2s ease;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--primary-deep); background: #fff0f1; }
    .nav-actions { display: flex; align-items: center; gap: 12px; }
    .language {
      padding: 8px 13px;
      color: var(--muted);
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
    }
    .nav-cta, .btn-primary {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 9px 20px rgba(237, 79, 113, .23);
    }
    .nav-cta {
      padding: 10px 17px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      transition: .2s ease;
    }
    .nav-cta:hover, .btn-primary:hover { background: var(--primary-deep); transform: translateY(-2px); }
    .menu-toggle { display: none; padding: 8px; background: transparent; color: var(--ink); font-size: 24px; }

    .hero {
      position: relative;
      padding: 92px 0 70px;
      background:
        radial-gradient(circle at 88% 15%, rgba(255, 177, 85, .22), transparent 23%),
        radial-gradient(circle at 12% 10%, rgba(237, 79, 113, .10), transparent 24%),
        var(--paper);
      overflow: hidden;
    }
    .hero::after {
      content: "";
      position: absolute;
      width: 430px;
      height: 430px;
      right: -190px;
      bottom: -240px;
      border: 1px solid rgba(237, 79, 113, .18);
      border-radius: 50%;
      box-shadow: 0 0 0 38px rgba(237, 79, 113, .04), 0 0 0 76px rgba(237, 79, 113, .025);
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 58px;
      align-items: center;
    }
    .hero-copy p {
      max-width: 680px;
      margin: 25px 0 30px;
      color: var(--muted);
      font-size: 18px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 0 21px;
      border-radius: 12px;
      font-weight: 800;
      transition: .2s ease;
    }
    .btn-secondary {
      color: var(--ink);
      background: var(--white);
      border: 1px solid var(--line);
    }
    .btn-secondary:hover { border-color: var(--primary); color: var(--primary-deep); transform: translateY(-2px); }
    .hero-proof {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      margin-top: 42px;
    }
    .proof-item strong { display: block; font-size: 26px; }
    .proof-item span { color: var(--muted); font-size: 12px; }

    .selection-card {
      position: relative;
      padding: 27px;
      color: var(--white);
      background: var(--night);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .selection-card::before {
      content: "";
      position: absolute;
      inset: 0 0 auto;
      height: 5px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }
    .selection-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
    .selection-top small { color: #c8bbc4; }
    .hot-badge, .tag {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      font-size: 11px;
      font-weight: 800;
    }
    .hot-badge { padding: 6px 10px; color: #fff4e7; background: rgba(255, 177, 85, .18); }
    .selection-card h3 { font-size: 31px; max-width: 300px; }
    .selection-card p { margin: 14px 0 23px; color: #c9bec8; font-size: 14px; }
    .selection-list { display: grid; gap: 11px; margin-bottom: 25px; }
    .selection-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      list-style: none;
      color: #f4e8ec;
      font-size: 14px;
    }
    .selection-list li::before { content: "✓"; color: var(--accent); font-weight: 900; }
    .selection-card .btn { width: 100%; background: var(--accent); color: #38251c; box-shadow: none; }
    .selection-card .btn:hover { background: #ffc67a; }

    .strip {
      padding: 17px 0;
      color: #fff3f0;
      background: var(--primary-deep);
    }
    .strip-inner { display: flex; justify-content: space-between; gap: 22px; align-items: center; }
    .strip strong { font-size: 15px; }
    .strip span { color: #f5c9d2; font-size: 13px; }

    .intro-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; align-items: start; }
    .intro-layout .section-heading { margin-bottom: 0; }
    .benefit-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .benefit {
      padding: 22px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      transition: .25s ease;
    }
    .benefit:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); border-color: #eab4bb; }
    .benefit-icon {
      width: 39px;
      height: 39px;
      display: grid;
      place-items: center;
      margin-bottom: 15px;
      color: var(--primary-deep);
      background: #fff0f1;
      border-radius: 12px;
      font-weight: 900;
    }
    .benefit p { margin-top: 8px; color: var(--muted); font-size: 14px; }

    .reward-section { background: var(--soft); }
    .reward-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
    .reward-feature {
      min-height: 355px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 30px;
      color: var(--white);
      background: linear-gradient(180deg, rgba(30, 22, 34, .04), rgba(30, 22, 34, .88)), url("https://images.unsplash.com/photo-1519608487953-e999c86e7455?auto=format&fit=crop&w=1200&q=85") center/cover;
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .reward-feature .tag { width: max-content; padding: 6px 10px; color: #fff8e9; background: rgba(255, 177, 85, .22); }
    .reward-feature h3 { max-width: 420px; margin-top: 13px; font-size: 32px; }
    .reward-feature p { max-width: 460px; margin-top: 10px; color: #e9dce2; font-size: 14px; }
    .reward-stack { display: grid; gap: 14px; }
    .reward-item {
      display: grid;
      grid-template-columns: 78px 1fr auto;
      align-items: center;
      gap: 17px;
      min-height: 109px;
      padding: 15px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      transition: .2s ease;
    }
    .reward-item:hover { box-shadow: var(--shadow-soft); transform: translateX(4px); }
    .reward-thumb { width: 78px; height: 78px; object-fit: cover; border-radius: 12px; }
    .reward-item p { margin-top: 5px; color: var(--muted); font-size: 13px; }
    .reward-item b { color: var(--primary-deep); font-size: 13px; white-space: nowrap; }

    .progress-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
    .progress-panel { padding: 30px; background: var(--night); border-radius: var(--radius-lg); color: var(--white); box-shadow: var(--shadow); }
    .progress-head { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
    .progress-head span { color: #cdbfc8; font-size: 13px; }
    .progress-head strong { color: var(--accent); font-size: 25px; }
    .progress-bar { height: 10px; margin-bottom: 27px; background: #493d48; border-radius: 99px; overflow: hidden; }
    .progress-bar i { display: block; width: 72%; height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: inherit; }
    .milestones { display: grid; gap: 16px; }
    .milestone { display: flex; align-items: flex-start; gap: 13px; }
    .milestone-dot { width: 25px; height: 25px; flex: 0 0 25px; display: grid; place-items: center; color: var(--night); background: var(--accent); border-radius: 50%; font-size: 12px; font-weight: 900; }
    .milestone.pending .milestone-dot { color: #bcaeba; background: #493d48; }
    .milestone b { display: block; font-size: 14px; }
    .milestone small { color: #bcaeba; font-size: 12px; }

    .news-section { background: #fff; }
    .news-layout { display: grid; grid-template-columns: 1.3fr .7fr; gap: 45px; }
    .news-list { border-top: 1px solid var(--line); }
    .news-row {
      display: grid;
      grid-template-columns: 95px 1fr auto;
      align-items: center;
      gap: 22px;
      padding: 21px 0;
      border-bottom: 1px solid var(--line);
      transition: .2s ease;
    }
    .news-row:hover { padding-left: 8px; }
    .news-date { color: var(--primary-deep); font-size: 12px; font-weight: 800; }
    .news-row h3 { font-size: 17px; }
    .news-row p { margin-top: 4px; color: var(--muted); font-size: 13px; }
    .news-arrow { color: var(--primary); font-size: 22px; }
    .news-aside { padding: 26px; background: var(--soft); border-radius: var(--radius-md); }
    .news-aside h3 { margin-bottom: 17px; }
    .aside-line { display: flex; justify-content: space-between; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
    .aside-line:last-child { border-bottom: 0; }
    .aside-line span { color: var(--muted); }

    .faq-section { background: var(--soft); }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .faq-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 15px;
      padding: 20px 22px;
      color: var(--ink);
      background: transparent;
      text-align: left;
      font-weight: 800;
    }
    .faq-question span { color: var(--primary); font-size: 22px; transition: .2s ease; }
    .faq-answer { max-height: 0; padding: 0 22px; color: var(--muted); font-size: 14px; overflow: hidden; transition: .3s ease; }
    .faq-item.open .faq-answer { max-height: 150px; padding-bottom: 20px; }
    .faq-item.open .faq-question span { transform: rotate(45deg); }

    .join-section { padding: 94px 0; }
    .join-box {
      display: grid;
      grid-template-columns: 1fr .8fr;
      gap: 45px;
      align-items: center;
      padding: 48px;
      color: var(--white);
      background: linear-gradient(115deg, #2c2330, #4c2639);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
    }
    .join-box p { max-width: 650px; margin-top: 15px; color: #ddcbd4; }
    .join-box .eyebrow { color: #ffc77e; }
    .join-box .eyebrow::before { background: #ffc77e; }
    .join-form { display: grid; gap: 10px; }
    .join-form input {
      width: 100%;
      min-height: 48px;
      padding: 0 15px;
      color: var(--white);
      background: rgba(255,255,255,.09);
      border: 1px solid rgba(255,255,255,.2);
      border-radius: 10px;
    }
    .join-form input::placeholder { color: #bcaeb8; }
    .join-form .btn { background: var(--accent); color: #34241e; }
    .privacy-note { color: #bcaeb8; font-size: 11px; line-height: 1.5; }

    footer { padding: 42px 0 24px; color: #c4b7c1; background: #211c27; }
    .footer-main { display: flex; justify-content: space-between; gap: 40px; padding-bottom: 34px; }
    .footer-brand { color: var(--white); }
    .footer-brand p { max-width: 340px; margin-top: 12px; color: #a99ca8; font-size: 13px; }
    .footer-links { display: flex; gap: 35px; align-items: flex-start; }
    .footer-links a { color: #c4b7c1; font-size: 13px; transition: .2s ease; }
    .footer-links a:hover { color: var(--accent); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 21px; border-top: 1px solid #3c3340; color: #938691; font-size: 12px; }

    @media (max-width: 1024px) {
      .hero-grid, .progress-layout { grid-template-columns: 1fr; }
      .hero-copy { max-width: 760px; }
      .selection-card { max-width: 620px; }
      .intro-layout { gap: 35px; }
      .news-layout { gap: 25px; }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 34px)); }
      .section { padding: 76px 0; }
      .menu-toggle { display: block; }
      .nav-links, .nav-actions .nav-cta { display: none; }
      .nav.open .nav-links {
        position: absolute;
        top: 77px;
        left: 0;
        right: 0;
        display: grid;
        padding: 15px 17px 20px;
        background: rgba(255,250,247,.98);
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow-soft);
      }
      .nav.open .nav-links a { padding: 13px 12px; }
      .nav-actions { margin-left: auto; }
      .hero { padding-top: 62px; }
      .intro-layout, .reward-layout, .news-layout, .join-box { grid-template-columns: 1fr; }
      .benefit-list, .faq-grid { grid-template-columns: 1fr; }
      .join-box { padding: 32px 25px; gap: 28px; }
      .footer-main { flex-direction: column; }
      .footer-links { flex-wrap: wrap; gap: 15px 25px; }
    }
    @media (max-width: 520px) {
      h1 { font-size: 43px; }
      .hero-copy p { font-size: 16px; }
      .hero-proof { gap: 17px; }
      .selection-card { padding: 23px; }
      .reward-feature { min-height: 300px; padding: 23px; }
      .reward-feature h3 { font-size: 27px; }
      .reward-item { grid-template-columns: 62px 1fr; gap: 12px; }
      .reward-thumb { width: 62px; height: 62px; }
      .reward-item b { grid-column: 2; }
      .news-row { grid-template-columns: 1fr auto; gap: 7px 15px; }
      .news-date { grid-column: 1 / -1; }
      .news-row p { display: none; }
      .strip-inner { align-items: flex-start; flex-direction: column; gap: 2px; }
      .footer-bottom { flex-direction: column; gap: 6px; }
    }