/* ==========================================================================
   追远 · 宣传站（纯介绍版）— 暖棕琥珀 + 米白，与产品设计指南一致
   故事驱动 · 三端展示 · 真实截图
   ========================================================================== */
:root {
  --amber: #b45309;
  --amber-dark: #92400e;
  --amber-light: #d97706;
  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --ink: #292524;
  --ink-soft: #57534e;
  --muted: #a8a29e;
  --paper: #fafaf9;
  --paper-warm: #f5f3f0;
  --card: #ffffff;
  --line: #e7e5e4;
  --indigo: #4f46e5;
  --rose: #f43f5e;
  --serif: "Noto Serif SC", "Songti SC", "STSong", SimSun, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --shadow-sm: 0 1px 3px rgba(120, 100, 80, 0.07);
  --shadow-md: 0 8px 24px rgba(120, 100, 80, 0.12);
  --shadow-lg: 0 24px 60px rgba(120, 80, 40, 0.18);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--amber); text-decoration: none; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.section.alt { background: var(--paper-warm); }

h1, h2, h3, h4, .serif { font-family: var(--serif); }
.section-title { font-size: 33px; text-align: center; color: var(--ink); letter-spacing: 0.06em; line-height: 1.4; }
.section-sub { text-align: center; color: var(--ink-soft); margin: 14px auto 52px; max-width: 600px; font-size: 16px; }
.section-title::after {
  content: ""; display: block;
  width: 48px; height: 3px;
  background: var(--amber);
  margin: 18px auto 0; border-radius: 2px;
}

/* ---- 滚动渐显 ---- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---- 导航 ---- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 250, 249, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-seal {
  width: 38px; height: 38px;
  display: block; object-fit: cover;
  border-radius: 9px; box-shadow: 0 2px 8px rgba(180,83,9,.3);
}
.brand-name { font-family: var(--serif); font-size: 21px; font-weight: 700; letter-spacing: 0.2em; color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--ink-soft); font-size: 14.5px; transition: color .2s; }
.nav-links a:hover { color: var(--amber); }
.nav-links a.btn-primary, .nav-links a.btn-primary:hover { color: #fff; }
.nav-toggle { display: none; background: none; border: none; color: var(--ink); cursor: pointer; padding: 4px; line-height: 0; }
.nav-toggle svg { width: 26px; height: 26px; }

/* ---- 线性图标（替代 emoji，Lucide 风格） ---- */
.ic { color: var(--amber); }
.ic svg { width: 1em; height: 1em; display: block; }
.h-ic { width: 1.05em; height: 1.05em; color: var(--amber); vertical-align: -0.16em; margin-right: 0.4em; flex: none; }
.btn svg { width: 1.15em; height: 1.15em; flex: none; }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: 0.5px;
  border: 1px solid transparent; cursor: pointer;
  transition: all 0.2s; font-family: var(--sans);
}
.btn-primary {
  background: var(--amber); color: #fff; border-color: var(--amber-dark);
  text-shadow: 0 1px 2px rgba(120, 53, 15, 0.45);
  box-shadow: 0 4px 14px rgba(180, 83, 9, 0.35);
}
.btn-primary:hover { background: var(--amber-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(180,83,9,.4); }
.btn-outline { border-color: var(--amber); color: var(--amber-dark); background: transparent; }
.btn-outline:hover { background: var(--amber); color: #fff; text-shadow: 0 1px 2px rgba(120,53,15,.45); }
.btn-ghost { background: var(--card); border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--amber-light); color: var(--amber-dark); }
.btn-sm { padding: 9px 22px; font-size: 14px; }
.btn[disabled], .btn.is-soon { opacity: .6; cursor: default; pointer-events: none; box-shadow: none; }

/* ---- 手机外框 ---- */
.phone {
  position: relative;
  width: 280px; max-width: 78vw;
  background: #1c1917; border-radius: 38px;
  padding: 10px; box-shadow: var(--shadow-lg);
  border: 1px solid #2c2622;
}
.phone::before {
  content: ""; position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 7px; background: #0c0a09; border-radius: 99px; z-index: 2;
}
.phone img { border-radius: 30px; width: 100%; }
.phone.tilt { transform: rotate(-3deg); }

/* ---- Hero ---- */
.hero { padding: 70px 0 92px; overflow: hidden;
  background:
    radial-gradient(ellipse 55% 45% at 18% 15%, rgba(251, 191, 36, 0.12), transparent),
    radial-gradient(ellipse 50% 50% at 88% 75%, rgba(180, 83, 9, 0.08), transparent),
    var(--paper);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.hero-eyebrow {
  display: inline-block; font-size: 13px; color: var(--amber);
  background: var(--amber-50); border: 1px solid var(--amber-100);
  padding: 5px 15px; border-radius: 999px; letter-spacing: 0.08em;
}
.hero h1 { font-size: 50px; line-height: 1.28; letter-spacing: 0.04em; margin: 22px 0 14px; color: var(--ink); }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero-quote { font-family: var(--serif); color: var(--muted); letter-spacing: 0.18em; font-size: 15px; margin-bottom: 18px; }
.hero-desc { max-width: 540px; color: var(--ink-soft); font-size: 17px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 34px; color: var(--ink-soft); font-size: 14px; }
.hero-points span::before { content: "✓ "; color: var(--amber); font-weight: 700; }
.hero-visual { display: flex; justify-content: center; position: relative; }
.hero-pet-chip {
  position: absolute; bottom: 54px; left: -6px;
  background: var(--card); border: 1px solid var(--amber-100);
  border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink);
  animation: floaty 4s ease-in-out infinite;
}
.hero-pet-chip b { color: var(--amber-dark); font-family: var(--serif); }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---- 创始人故事 ---- */
.story { background:
  linear-gradient(180deg, var(--paper-warm), var(--paper));
}
.story-inner { max-width: 760px; margin: 0 auto; }
.story-eyebrow { text-align: center; color: var(--amber); letter-spacing: 0.3em; font-size: 13px; font-family: var(--serif); }
.story-inner h2 { text-align: center; font-size: 30px; margin: 12px 0 36px; color: var(--ink); letter-spacing: .04em; line-height:1.5; }
.story-p { font-size: 17px; color: var(--ink-soft); margin-bottom: 22px; line-height: 2; }
.story-p b { color: var(--ink); font-weight: 600; }
.story-pull {
  font-family: var(--serif); font-size: 25px; line-height: 1.7; color: var(--amber-dark);
  text-align: center; margin: 40px auto; padding: 28px 24px;
  border-top: 1px solid var(--amber-100); border-bottom: 1px solid var(--amber-100);
  max-width: 620px;
}
.story-sign { text-align: right; font-family: var(--serif); color: var(--muted); font-size: 15px; margin-top: 8px; letter-spacing: .05em; }
.story-sign em { font-style: normal; color: var(--amber); }

/* ---- 通用网格卡片 ---- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 18px; padding: 30px 26px; box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card .ic { font-size: 30px; line-height: 1; }
.card h3 { font-size: 18.5px; margin: 14px 0 9px; color: var(--ink); }
.card p { font-size: 14.5px; color: var(--ink-soft); }

/* ---- 谁能入谱（含手机配图） ---- */
.inclusive-lead { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: center; margin-bottom: 8px; }
.inclusive-lead .phone { margin: 0 auto; }
.inclusive-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.mini-card { display: flex; gap: 14px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; box-shadow: var(--shadow-sm); }
.mini-card .ic { font-size: 26px; line-height: 1.2; }
.mini-card b { font-family: var(--serif); color: var(--amber-dark); font-size: 16px; }
.mini-card span { display: block; font-size: 13.5px; color: var(--ink-soft); margin-top: 4px; }

/* ---- 功能卡（带截图） ---- */
.feat { overflow: hidden; padding: 0; }
.feat .shot { background: var(--paper-warm); padding: 22px 22px 0; display: flex; justify-content: center; border-bottom: 1px solid var(--line); }
.feat .shot img { width: 168px; border-radius: 16px 16px 0 0; box-shadow: 0 -2px 12px rgba(120,100,80,.1); }
.feat .body { padding: 22px 24px 26px; }
.feat .body h3 { font-size: 18px; margin-bottom: 8px; }
.feat .body p { font-size: 14px; color: var(--ink-soft); }

/* ---- 文化传承 ---- */
.two-col { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 44px; align-items: center; }
.culture-list { list-style: none; display: grid; gap: 13px; }
.culture-list li { display: flex; gap: 14px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 13px; padding: 15px 19px; box-shadow: var(--shadow-sm); }
.culture-list .ic { font-size: 22px; line-height: 1.4; }
.culture-list b { font-family: var(--serif); color: var(--amber-dark); }
.culture-list span { display: block; font-size: 13px; color: var(--ink-soft); }
.privacy-box { background: linear-gradient(135deg, #fffbeb, #fef3c7); border: 1px solid var(--amber-100); border-radius: 22px; padding: 38px; }
.privacy-box h3 { font-size: 22px; color: var(--amber-dark); margin-bottom: 14px; }
.privacy-box p { color: var(--ink-soft); font-size: 15px; margin-bottom: 12px; }
.privacy-box p b { color: var(--ink); }

/* ---- 截图画廊 ---- */
.gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; grid-auto-flow: dense; }
.shot-card { cursor: zoom-in; border-radius: 18px; overflow: hidden; background: #1c1917; padding: 7px; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s; border: 1px solid #2c2622; }
.shot-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.shot-card img { border-radius: 13px; aspect-ratio: 9/19.5; object-fit: cover; object-position: top; width: 100%; }
.shot-card.wide img { aspect-ratio: 19.5/9; }
.shot-card.wide { grid-column: 1 / -1; }
.gallery-cap { text-align: center; margin-top: 28px; color: var(--muted); font-size: 13.5px; }

/* 灯箱 */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(28,25,23,.86); backdrop-filter: blur(6px); display: none; align-items: center; justify-content: center; padding: 30px; }
.lightbox.open { display: flex; }
.lightbox img { max-width: min(420px, 90vw); max-height: 88vh; width: auto; border-radius: 22px; box-shadow: var(--shadow-lg); }
.lightbox .lb-cap { position: absolute; bottom: 26px; left: 0; right: 0; text-align: center; color: #fafaf9; font-family: var(--serif); letter-spacing: .1em; font-size: 15px; }
.lightbox .lb-close { position: absolute; top: 22px; right: 26px; color: #fff; font-size: 30px; cursor: pointer; line-height: 1; opacity: .85; }
.lightbox .lb-close:hover { opacity: 1; }
.lightbox .lb-nav { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 40px; cursor: pointer; opacity: .7; padding: 12px; user-select: none; }
.lightbox .lb-nav:hover { opacity: 1; }
.lightbox .lb-prev { left: 8px; } .lightbox .lb-next { right: 8px; }

/* ---- 三端 ---- */
.platform-card { text-align: center; padding: 38px 28px; position: relative; }
.platform-card .ic { font-size: 46px; display: flex; justify-content: center; }
.platform-card h3 { font-size: 21px; margin: 16px 0 6px; }
.platform-card p { font-size: 14px; color: var(--ink-soft); min-height: 42px; }
.platform-card .state { display: inline-block; margin-top: 14px; font-size: 12.5px; padding: 3px 13px; border-radius: 999px; letter-spacing: .05em; }
.platform-card .state::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; margin-right: 6px; vertical-align: middle; }
.platform-card .card-link { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--amber-dark); font-weight: 600; }
.platform-card .card-link:hover { color: var(--amber); }
.state.live { color: #15803d; background: #f0fdf4; border: 1px solid #bbf7d0; }
.state.soon { color: var(--amber); background: var(--amber-50); border: 1px solid var(--amber-100); }
.sync-note { margin-top: 30px; text-align: center; font-size: 15px; color: var(--ink-soft); background: var(--card); border: 1px dashed var(--amber-light); border-radius: 13px; padding: 18px 26px; }
.sync-note b { color: var(--amber-dark); }

/* ---- 下载 ---- */
.download-box { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 46px 40px; text-align: center; box-shadow: var(--shadow-sm); }
.download-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin: 26px 0 14px; }
.download-meta { font-size: 13.5px; color: var(--muted); }
.download-service { margin-top: 14px; font-size: 14px; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 7px; }
.download-service svg { width: 17px; height: 17px; color: var(--amber); flex: none; }
.download-service b { color: var(--amber-dark); font-family: var(--serif); letter-spacing: .02em; }

/* ---- 微信小程序入口 ---- */
.mp-entry { margin-top: 30px; padding: 26px; border-top: 1px dashed var(--line); display: flex; align-items: center; justify-content: center; gap: 30px; flex-wrap: wrap; text-align: left; }
.mp-qr-frame { flex: none; width: 158px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 6px 22px rgba(120,100,80,.1); }
.mp-qr-frame img { display: block; width: 100%; height: auto; border-radius: 8px; }
.mp-copy { max-width: 320px; }
.mp-badge-wx { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; color: #fff; background: #07c160; border-radius: 999px; padding: 4px 12px; margin-bottom: 12px; }
.mp-badge-wx svg { width: 15px; height: 15px; flex: none; }
.mp-copy h3 { font-family: var(--serif); font-size: 20px; color: var(--ink); margin-bottom: 9px; }
.mp-copy p { font-size: 14px; color: var(--ink-soft); line-height: 1.75; }
.mp-copy .mp-tag { display: inline-block; margin-top: 13px; font-size: 12.5px; color: var(--amber-dark); background: rgba(180,83,9,.08); border-radius: 999px; padding: 4px 13px; }
@media (max-width: 560px) { .mp-entry { flex-direction: column; text-align: center; gap: 20px; padding: 24px 8px 8px; } .mp-copy { max-width: 100%; } }

/* ---- 页脚 ---- */
.footer { background: #292524; color: #d6d3d1; padding: 56px 0 34px; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 36px; flex-wrap: wrap; }
.footer h4 { color: #fafaf9; font-size: 15px; margin-bottom: 14px; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 9px; }
.footer a { color: #a8a29e; }
.footer a:hover { color: #fbbf24; }
.footer-quote { max-width: 300px; color: #a8a29e; }
.footer-sign { color: #78716c; font-style: italic; margin-top: 14px; font-family: var(--serif); font-size: 13.5px; }
.footer-bottom { border-top: 1px solid #44403c; margin-top: 40px; padding-top: 22px; text-align: center; font-size: 12px; color: #78716c; }

/* ---- 响应式 ---- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 50px; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-points { justify-content: center; }
  .inclusive-lead, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 36px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 27px; }
  .story-pull { font-size: 21px; }
  .grid-3, .grid-4, .grid-2, .inclusive-cards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .shot-card.wide { grid-column: 1 / -1; }
  .nav-links {
    display: none; position: absolute; top: 66px; left: 0; right: 0;
    background: var(--paper); flex-direction: column; padding: 18px 24px; gap: 16px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

/* ---- PC 桌面展示 ---- */
.win { background: var(--card); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md); }
.win.hero-win { max-width: 1000px; margin: 0 auto; }
.win-bar { display: flex; align-items: center; gap: 7px; height: 34px; padding: 0 15px; background: #f0ede9; border-bottom: 1px solid var(--line); }
.win-bar span { width: 11px; height: 11px; border-radius: 50%; background: #d6d3d1; flex: none; }
.win-bar span:nth-child(1) { background: #f87171; }
.win-bar span:nth-child(2) { background: #fbbf24; }
.win-bar span:nth-child(3) { background: #34d399; }
.win-bar b { margin-left: 8px; font-family: var(--sans); font-weight: 500; font-size: 12.5px; color: var(--muted); letter-spacing: .05em; }
.win img { width: 100%; display: block; }
.pc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; margin: 30px auto 0; max-width: 1000px; }
.pc-grid figure { margin: 0; }
.pc-grid figcaption { text-align: center; margin-top: 13px; font-size: 14px; color: var(--ink-soft); }
.pc-grid figcaption b { font-family: var(--serif); color: var(--amber-dark); }
@media (max-width: 640px) { .pc-grid { grid-template-columns: 1fr; gap: 22px; } }

/* ---- 版本与购买 ---- */
.sub-soft { color: var(--muted); font-size: 14px; }
.price-grid { max-width: 980px; margin: 0 auto; align-items: stretch; }
.price-card { text-align: center; display: flex; flex-direction: column; padding: 34px 26px 30px; position: relative; }
.price-card h3 { font-size: 20px; margin: 0 0 2px; }
.price-card .price { font-family: var(--serif); margin: 12px 0 2px; line-height: 1; }
.price-card .price .now { font-size: 34px; font-weight: 700; color: var(--amber-dark); }
.price-card .price .was { font-size: 16px; color: var(--muted); text-decoration: line-through; margin-right: 9px; vertical-align: middle; }
.price-card .price-period { font-size: 12.5px; color: var(--muted); letter-spacing: .04em; }
.price-list { list-style: none; padding: 0; margin: 20px auto 24px; text-align: left; display: inline-block; }
.price-list li { font-size: 14px; color: var(--ink-soft); padding: 6px 0 6px 23px; position: relative; }
.price-list li::before { content: "✓"; position: absolute; left: 0; color: var(--amber); font-weight: 700; }
.price-list li.no { color: var(--muted); }
.price-list li.no::before { content: "—"; color: var(--muted); font-weight: 400; }
.price-card .btn { margin-top: auto; align-self: center; }
.price-card.featured { border-color: var(--amber-light); box-shadow: var(--shadow-md); }
.price-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--amber); color: #fff; font-size: 12px; padding: 4px 15px; border-radius: 999px; letter-spacing: .04em; white-space: nowrap; box-shadow: 0 4px 12px rgba(180,83,9,.3); text-shadow: 0 1px 2px rgba(120,53,15,.4); }
.buy-note { max-width: 820px; margin: 42px auto 0; background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 26px 30px; box-shadow: var(--shadow-sm); }
.buy-main { display: flex; align-items: center; gap: 20px; }
.buy-fish { font-size: 38px; flex: none; line-height: 1; }
.buy-copy { flex: 1; }
.buy-copy b { color: var(--ink); font-size: 16px; }
.buy-copy p { font-size: 13.5px; color: var(--ink-soft); margin-top: 7px; line-height: 1.75; }
.buy-main > .btn { flex: none; }
.buy-alt { font-size: 13px; color: var(--muted); margin-top: 18px; text-align: center; line-height: 1.7; }
.buy-alt b { color: var(--amber-dark); }
@media (max-width: 760px) { .buy-main { flex-direction: column; text-align: center; } }

/* 宣传视频区 */
.video-section { background: linear-gradient(180deg, #fffdf8 0%, #fdf3e2 100%); }
.video-sub { text-align: center; color: var(--ink-soft, #57534e); margin-top: 14px; font-size: 17px; letter-spacing: .02em; }
.video-wrap {
  position: relative;
  width: 100%;
  max-width: 980px; margin: 36px auto 0;
  aspect-ratio: 16 / 9;            /* 用 CSS 锁定 16:9 盒子，盒子尺寸与内容像素无关，不会撑爆宽度 */
  border-radius: 18px; overflow: hidden;
  background: radial-gradient(120% 100% at 50% 0%, #fffdf8 0%, #fdf3e2 55%, #f6e4c6 100%);
  box-shadow: 0 30px 80px rgba(120,60,10,.22);
  border: 1px solid rgba(180,83,9,.14);
}
/* 旧内核 / 部分鸿蒙·华为浏览器不支持 aspect-ratio 时，用 padding 撑出 16:9 高度 */
@supports not (aspect-ratio: 1 / 1) {
  .video-wrap::before { content: ""; display: block; padding-top: 56.25%; }
}
/* Remotion Player 绝对填充 16:9 盒子 */
.video-wrap > * { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
/* 脚本加载/动画就绪前的占位提示 */
#promo-player:not(.ready)::after {
  content: "演示加载中…";
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-soft, #57534e); font-size: 15px; letter-spacing: .08em;
}
@media (max-width: 640px) { .video-wrap { margin-top: 24px; border-radius: 14px; } }

/* ---- 常见问题 FAQ ---- */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; box-shadow: var(--shadow-sm);
  overflow: hidden; transition: border-color .2s, box-shadow .2s;
}
.faq-item[open] { border-color: var(--amber-light); box-shadow: var(--shadow-md); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 13px;
  padding: 19px 22px;
  font-family: var(--serif); font-size: 18px; font-weight: 600; color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .q {
  flex: none; width: 26px; height: 26px; border-radius: 7px;
  background: var(--amber-100); color: var(--amber-dark);
  font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.faq-item summary .qt { flex: 1; }
.faq-item summary .plus { flex: none; width: 22px; height: 22px; position: relative; transition: transform .25s; }
.faq-item summary .plus::before, .faq-item summary .plus::after {
  content: ""; position: absolute; background: var(--amber); border-radius: 2px;
}
.faq-item summary .plus::before { top: 10px; left: 3px; right: 3px; height: 2px; }
.faq-item summary .plus::after { left: 10px; top: 3px; bottom: 3px; width: 2px; transition: opacity .25s; }
.faq-item[open] summary .plus { transform: rotate(90deg); }
.faq-item[open] summary .plus::after { opacity: 0; }
.faq-answer { padding: 0 22px 21px 61px; color: var(--ink-soft); font-size: 15.5px; line-height: 1.85; }
.faq-answer b { color: var(--ink); font-weight: 600; }
.faq-answer .path { color: var(--amber-dark); font-weight: 600; background: var(--amber-50); padding: 1px 7px; border-radius: 6px; white-space: nowrap; }
.faq-more { text-align: center; color: var(--ink-soft); font-size: 15px; margin-top: 30px; }
@media (max-width: 640px) {
  .faq-item summary { font-size: 16px; padding: 16px 18px; gap: 11px; }
  .faq-answer { padding: 0 18px 18px 18px; font-size: 15px; }
}