@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* 由 产品/index.html 参考稿抽取的产品页正文样式
   作用域限定在 .product-body，不污染 qb1 公共头尾（common.css）。
   头尾保持 qb1 原样式，正文采用参考稿设计（Inter 字体）。 */

.product-body
{
    --navy: #0B1120;
    --navy-deep: #0C1827;            
    --gold: #fcd535;                 
    --gold-hover: #B89A5D;
    --gold-soft: rgba(201, 169, 106, 0.12);
    --white: #FFFFFF;
    --gray: #9CA3AF;
    --gray-footer: #A1A9B8;
    --ink: #111827;
    --body: #4B5563;
    --hero-sub: #E5E7EB;
    --light: #FAFAFC;
    --card: #FFFFFF;
    --line: rgba(255, 255, 255, 0.10);
    --nav-line: rgba(15, 23, 42, 0.08);
    --nav-link: #475569;
    --nav-link-active: #0F172A;
    --border: rgba(15, 23, 42, 0.14);
    --footer-col: #6B7280;
  }
.product-body * { margin: 0; padding: 0; box-sizing: border-box; }
.product-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--navy);
    color: var(--white);
    -webkit-font-smoothing: antialiased;
  }
.product-body .container { max-width: 1440px; margin: 0 auto; padding: 0 64px; }
.product-body .eyebrow {
    color: var(--gold);
    font-size: 13px; font-weight: 600;
    letter-spacing: 2px; text-transform: uppercase;
    margin-bottom: 14px;
  }
.product-body .section-title { font-size: 40px; font-weight: 700; color: var(--white); line-height: 1.2; }
.product-body .section.light .section-title { color: var(--ink); }
.product-body .body-text { font-size: 18px; line-height: 30px; color: var(--body); max-width: 840px; }
.product-body .btn {
    font-family: inherit; cursor: pointer; border: none;
    border-radius: 8px; font-size: 14px; font-weight: 600;
    padding: 10px 22px; transition: all .2s; text-decoration: none;
    display: inline-flex; align-items: center; justify-content: center; line-height: 1;
  }
.product-body .btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--border); }
.product-body .btn-ghost:hover { border-color: var(--ink); }
.product-body .btn-gold { background: var(--gold); color: var(--navy); }
.product-body .btn-gold:hover { background: var(--gold-hover); }
.product-body .btn-dark { background: var(--navy); color: var(--white); }
.product-body .btn-dark:hover { background: #161F30; }
.product-body .hero { position: relative; height: 420px; overflow: hidden; }
.product-body .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.product-body .hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(11,17,32,0.45) 0%, rgba(11,17,32,0.82) 100%);
  }
.product-body .hero-content {
    position: relative; z-index: 2; height: 100%;
    display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
    padding: 0 24px;
  }
.product-body .hero-title { font-size: 56px; font-weight: 700; color: var(--white); line-height: 1.05; margin: 8px 0 14px; }
.product-body .hero-sub { font-size: 18px; line-height: 28px; color: var(--hero-sub); max-width: 720px; }
.product-body .section { padding: 96px 0; }
.product-body .section.light { background: var(--light); }
.product-body .section.dark { background: var(--navy); }
.product-body .section-head { margin-bottom: 48px; }
.product-body .section.dark .section-title { color: var(--white); }
.product-body .cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-body .card {
    background: var(--card); border-radius: 16px; padding: 24px;
    box-shadow: 0 1px 3px rgba(17,24,39,0.06), 0 8px 24px rgba(17,24,39,0.05);
    display: flex; align-items: flex-start; gap: 16px;
  }
.product-body .icon-wrap {
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--gold-soft); color: var(--gold);
    display: flex; align-items: center; justify-content: center; flex: 0 0 auto; margin-bottom: 0;
  }
.product-body .icon-wrap svg { width: 26px; height: 26px; }
.product-body .card-body { flex: 1 1 auto; min-width: 0; }
.product-body .card h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.product-body .card p { font-size: 15px; line-height: 24px; color: var(--body); }
.product-body .cards-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-body .step-card { background: var(--light); border-radius: 16px; padding: 28px; display: flex; align-items: flex-start; gap: 18px; }
.product-body .section.dark .step-card { background: rgba(255,255,255,0.04); }
.product-body .step-num { font-size: 36px; font-weight: 700; color: var(--gold); line-height: 1; flex: 0 0 auto; margin-bottom: 0; }
.product-body .step-card .card-body { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.product-body .step-card .card-body h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 0; }
.product-body .section.dark .step-card .card-body h3 { color: var(--white); }
.product-body .step-card .card-body p { font-size: 15px; line-height: 24px; color: var(--body); margin: 0; }
.product-body .section.dark .step-card .card-body p { color: var(--gray); }
.product-body .faq-list { display: flex; flex-direction: column; gap: 16px; max-width: 920px; }
.product-body .faq-item { background: var(--card); border-radius: 14px; overflow: hidden; box-shadow: 0 1px 3px rgba(17,24,39,0.06); }
.product-body .faq-q {
    width: 100%; text-align: left; background: none; border: none; cursor: pointer;
    font-family: inherit; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 22px 26px; font-size: 18px; font-weight: 600; color: var(--ink);
  }
.product-body .faq-q .plus { color: var(--gold); font-size: 24px; font-weight: 400; transition: transform .25s; flex-shrink: 0; }
.product-body .faq-item.open .faq-q .plus { transform: rotate(45deg); }
.product-body .faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.product-body .faq-a p { padding: 0 26px 22px; font-size: 15px; line-height: 24px; color: var(--body); }
.product-body .cta { text-align: center; }
.product-body .cta h2 { font-size: 40px; font-weight: 700; color: var(--white); margin-bottom: 14px; }
.product-body .cta p { font-size: 18px; color: var(--gray); margin-bottom: 28px; }
.product-body .footer-main { padding: 60px 0 48px; }
.product-body .badges { display: flex; flex-wrap: wrap; gap: 8px; }
.product-body .badge {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 5px 10px; border: 1px solid rgba(255,255,255,0.12); border-radius: 5px;
    font-size: 11px; font-weight: 600; color: var(--gray-footer); letter-spacing: 0.3px;
  }
.product-body .footer-risk {
    padding: 28px 0; border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 12px; line-height: 20px; color: var(--gray-footer);
  }
.product-body .footer-risk strong { color: var(--white); font-weight: 600; }
.product-body .footer-risk p { margin-bottom: 8px; }
.product-body .lang-switch {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 12px; border: 1px solid rgba(255,255,255,0.12); border-radius: 6px;
    font-size: 13px; color: var(--gray-footer);
  }
@media (max-width: 1100px) {
}
@media (max-width: 980px) {.product-body .container { padding: 0 24px; }
.product-body .cards-3, .product-body .cards-4 { grid-template-columns: repeat(2, 1fr); }
.product-body .hero { height: 360px; }
.product-body .hero-title { font-size: 48px; }
.product-body .section-title, .product-body .cta h2 { font-size: 30px; }
}
@media (max-width: 720px) {
}
@media (max-width: 600px) {
  .product-body .container { padding: 0 20px; }
  .product-body .cards-3, .product-body .cards-4 { grid-template-columns: 1fr; gap: 14px; }
  .product-body .section { padding: 48px 0; }
  .product-body .section-head { margin-bottom: 20px; }
  .product-body .icon-wrap { margin-bottom: 0; }
  .product-body .card { padding: 18px; }
  .product-body .step-card { padding: 18px; }
  .product-body .icon-wrap { width: 42px; height: 42px; margin-bottom: 0; }
  .product-body .hero { height: 300px; }
  .product-body .hero-title { font-size: 32px; }
  .product-body .btn { padding: 9px 16px; }
  .product-body .faq-q { padding: 16px 18px; font-size: 16px; }
  .product-body .faq-a p { padding: 0 18px 18px; }
  .product-body .footer-main { padding: 44px 0 36px; }
}
@media (max-width: 420px) {
  .product-body .container { padding: 0 16px; }
  .product-body .section { padding: 40px 0; }
  .product-body .card, .product-body .step-card { padding: 16px; }
  .product-body .cards-3, .product-body .cards-4 { gap: 12px; }
  .product-body .hero-title { font-size: 28px; }
  .product-body .section-head { margin-bottom: 16px; }
  .product-body .icon-wrap { margin-bottom: 0; }
}