/* ============================================
   巨鼎包装 · 全站共享（顶栏/页脚/通用组件/动效基元）
   依赖 tokens.css
   ============================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--jd-ink); background: var(--jd-bg);
  font-size: var(--jd-text-body);
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--jd-wrap); margin: 0 auto; padding: 0 var(--jd-gutter); }
img { display: block; }

/* ===== 动效基元 ===== */
.rv { opacity: 0; transform: translateY(28px); transition: opacity var(--jd-dur-normal) var(--jd-ease), transform var(--jd-dur-normal) var(--jd-ease); }
.rv.in { opacity: 1; transform: none; }
.rv-img { clip-path: inset(0 0 100% 0); transition: clip-path var(--jd-dur-slow) var(--jd-ease); }
.rv-img.in { clip-path: inset(0 0 0 0); }
.d1 { transition-delay: .08s; }
.d2 { transition-delay: .16s; }
.d3 { transition-delay: .24s; }
.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .rv, .rv-img { opacity: 1; transform: none; clip-path: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== 顶栏 ===== */
.hd {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--jd-ink);
  transition: box-shadow var(--jd-dur-fast);
}
.hd.scrolled { box-shadow: 0 8px 30px rgba(0, 0, 0, .06); }
.hd .wrap { display: flex; align-items: center; height: 88px; }
.hd .lg { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--jd-ink); }
.hd .lg img { width: 46px; height: 46px; object-fit: contain; transition: transform .5s var(--jd-ease); }
.hd .lg:hover img { transform: rotate(-6deg) scale(1.06); }
.hd .lg b { font-size: 19px; letter-spacing: .04em; }
.hd .lg small { display: block; font-size: 9px; letter-spacing: .2em; color: var(--jd-faint); margin-top: 2px; }
.hd nav { margin-left: auto; display: flex; align-items: center; }
.hd nav a {
  color: var(--jd-ink); text-decoration: none; font-size: 14px;
  margin-left: 32px; position: relative; padding: 4px 0;
}
.hd nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px;
  background: var(--jd-red); transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--jd-ease);
}
.hd nav a:hover::after, .hd nav a.cur::after { transform: scaleX(1); }
.hd nav a.cur { color: var(--jd-red); }
.hd .lang-sw { color: var(--jd-faint); }
.hd .lang-sw:hover { color: var(--jd-red); }
.hd .cta {
  margin-left: 32px; background: var(--jd-ink); color: #fff;
  font-size: 13px; padding: 10px 22px; letter-spacing: .06em;
  transition: background var(--jd-dur-fast);
}
.hd .cta:hover { background: var(--jd-red); }
.hd .cta::after { display: none; }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-block; background: var(--jd-ink); color: #fff; text-decoration: none;
  padding: 16px 44px; font-size: 14px; letter-spacing: .12em; white-space: nowrap;
  position: relative; overflow: hidden; transition: color .35s; border: 0; cursor: pointer;
}
.btn::before {
  content: ""; position: absolute; inset: 0; background: var(--jd-red);
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--jd-ease);
}
.btn:hover::before { transform: scaleX(1); }
.btn span { position: relative; z-index: 1; }

/* ===== 区块通用 ===== */
.sec { padding: var(--jd-section) 0; }
.tt { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 56px; }
.tt h2 { font-size: var(--jd-text-h2); font-weight: 900; }
.tt h2 small {
  font-size: 12px; color: var(--jd-red); letter-spacing: .32em;
  display: block; margin-bottom: 12px; font-weight: 700;
}
.tt a {
  color: var(--jd-ink); font-size: 13px; text-decoration: none;
  padding-bottom: 3px; border-bottom: 1px solid var(--jd-ink); transition: .3s;
}
.tt a:hover { color: var(--jd-red); border-color: var(--jd-red); }

/* ===== 页脚 ===== */
.ft { background: var(--jd-bg-dark); color: #888; font-size: 13px; }
.ft .wrap { padding: 64px var(--jd-gutter) 28px; }
.ft .grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 44px;
  padding-bottom: 44px; border-bottom: 1px solid var(--jd-dark-line);
}
.ft .lg { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.ft .lg img { width: 42px; height: 42px; object-fit: contain; }
.ft .lg b { color: #fff; font-size: 16px; }
.ft .lg small { display: block; font-size: 9px; letter-spacing: .16em; color: #666; margin-top: 2px; }
.ft h5 { color: #fff; font-size: 14px; margin-bottom: 16px; font-weight: 700; }
.ft p, .ft a { color: #888; line-height: 2.2; text-decoration: none; display: block; }
.ft a:hover { color: #fff; }
.ft .copy { display: flex; justify-content: space-between; padding-top: 24px; font-size: 12px; color: #555; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hd .wrap { height: 68px; }
  .hd .lg b { font-size: 15px; }
  .hd .lg small { display: none; }
  .hd nav a { margin-left: 18px; font-size: 13px; }
  .hd nav a:not(.cta):not(.lang-sw) { display: none; }
  .ft .grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .sec { padding: 72px 0; }
  .tt { flex-direction: column; gap: 14px; margin-bottom: 36px; }
}