:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --ink: #0f1115;
  --ink-2: #4a4f5a;
  --ink-3: #7b8190;
  --line: #ebe8e3;
  --night: #0b0d12;
  --night-2: #151a24;
  --apricot: #ffb38a;
  --coral: #ff7a6b;
  --rose: #f0568c;
  --brand: linear-gradient(120deg, var(--apricot), var(--coral) 50%, var(--rose));
  --radius: 20px;
  --shadow: 0 1px 2px rgba(15, 17, 21, 0.04), 0 12px 32px rgba(15, 17, 21, 0.06);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 Inter, 'PingFang SC', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

/* 双语：<html lang="zh"> 时隐藏英文，反之亦然 */
html[lang='zh'] [data-l='en'], html:not([lang='zh']) [data-l='zh'] { display: none !important; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* 顶栏 */
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(1.4) blur(14px); background: rgba(11, 13, 18, 0.72); color: #fff; }
.nav .wrap { display: flex; align-items: center; gap: 16px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.02em; text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 8px; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 20px; font-size: 14px; }
.nav-links a { text-decoration: none; opacity: 0.8; }
.nav-links a:hover { opacity: 1; }
.lang { border: 1px solid rgba(255, 255, 255, 0.25); background: transparent; color: #fff; border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer; }
.lang:hover { border-color: rgba(255, 255, 255, 0.6); }
@media (max-width: 640px) { .nav-links .hide-sm { display: none; } }

/* 首屏 */
.hero { background: radial-gradient(900px 500px at 78% 30%, rgba(255, 122, 107, 0.2), transparent 60%), linear-gradient(160deg, var(--night), var(--night-2)); color: #fff; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; padding: 88px 0 104px; }
.eyebrow { display: inline-block; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--apricot); font-weight: 600; margin-bottom: 18px; }
h1 { font-size: clamp(36px, 5.4vw, 60px); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 22px; font-weight: 700; }
html[lang='zh'] h1 { letter-spacing: 0; line-height: 1.2; }
.grad { background: var(--brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18px; color: rgba(255, 255, 255, 0.74); max-width: 34em; margin: 0 0 32px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px; font-weight: 600; text-decoration: none; font-size: 15px; }
.btn-brand { background: var(--brand); color: #fff; box-shadow: 0 10px 30px rgba(240, 86, 140, 0.35); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.28); color: #fff; }
.note { font-size: 13px; color: rgba(255, 255, 255, 0.5); margin-top: 16px; }

/* 首屏右侧：手机示意 */
.phone { justify-self: center; width: 300px; aspect-ratio: 9 / 19; border-radius: 44px; padding: 12px; background: linear-gradient(160deg, #262c38, #0d1016); box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.08); }
.screen { height: 100%; border-radius: 34px; background: #fafaf8; color: var(--ink); padding: 44px 18px 18px; display: flex; flex-direction: column; gap: 12px; overflow: hidden; }
.screen .hello { font-size: 12px; color: var(--ink-3); }
.screen .title { font-size: 20px; font-weight: 700; margin-top: -8px; }
.card { background: #fff; border-radius: 18px; padding: 14px; box-shadow: var(--shadow); }
.ring-card { display: flex; align-items: center; gap: 14px; }
.ring-card svg { width: 76px; height: 76px; flex: none; }
.ring-card b { display: block; font-size: 15px; }
.ring-card span { font-size: 12px; color: var(--ink-3); }
.row { display: flex; align-items: center; justify-content: space-between; font-size: 13px; }
.row + .row { border-top: 1px solid var(--line); margin-top: 10px; padding-top: 10px; }
.pill { font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: #fff1ea; color: #d9553f; }
.pill.ok { background: #e9f7ef; color: #1f8a4c; }
.spark { height: 56px; }

/* 区块 */
section { padding: 96px 0; }
.kicker { font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--coral); font-weight: 600; margin: 0 0 12px; }
h2 { font-size: clamp(28px, 3.6vw, 40px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
html[lang='zh'] h2 { letter-spacing: 0; line-height: 1.3; }
.sub { color: var(--ink-2); font-size: 17px; max-width: 40em; margin: 0 0 48px; }
.grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.feature .ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: #fff3ed; margin-bottom: 18px; }
.feature .ic svg { width: 22px; height: 22px; stroke: var(--coral); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--ink-2); font-size: 15px; }

.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.mode { border-radius: 24px; padding: 36px; }
.mode.clinic { background: linear-gradient(160deg, var(--night), var(--night-2)); color: #fff; }
.mode.clinic p, .mode.clinic li { color: rgba(255, 255, 255, 0.72); }
.mode.self { background: #fff; border: 1px solid var(--line); }
.mode h3 { font-size: 22px; margin: 12px 0 10px; }
.mode p { margin: 0 0 18px; color: var(--ink-2); }
.mode ul { margin: 0; padding-left: 20px; }
.mode li { margin: 6px 0; color: var(--ink-2); }
.tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(255, 179, 138, 0.18); color: var(--apricot); }
.mode.self .tag { background: #f2f1ee; color: var(--ink-2); }

.clinics { background: #fff; border-block: 1px solid var(--line); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li { display: flex; gap: 12px; color: var(--ink-2); }
.checks li::before { content: ''; flex: none; width: 20px; height: 20px; margin-top: 3px; border-radius: 50%; background: var(--brand); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0a10 10 0 110 20 10 10 0 010-20zm4.3 6.3L8.8 11.8 5.7 8.7 4.3 10.1l4.5 4.5 6.9-6.9z'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M10 0a10 10 0 110 20 10 10 0 010-20zm4.3 6.3L8.8 11.8 5.7 8.7 4.3 10.1l4.5 4.5 6.9-6.9z'/%3E%3C/svg%3E") center / contain no-repeat; }
.board { background: var(--bg); border: 1px solid var(--line); border-radius: 20px; padding: 20px; box-shadow: var(--shadow); font-size: 13px; }
.board .bh { display: flex; justify-content: space-between; color: var(--ink-3); margin-bottom: 12px; font-size: 12px; }
.board .br { display: grid; grid-template-columns: 1.3fr 1fr auto; gap: 12px; align-items: center; padding: 10px 12px; background: #fff; border-radius: 12px; margin-top: 8px; }
.board .bar { height: 6px; border-radius: 3px; background: #f0eee9; overflow: hidden; }
.board .bar i { display: block; height: 100%; background: var(--brand); }

.safety { background: #fff7f3; border: 1px solid #ffe0d4; border-radius: 24px; padding: 36px; display: grid; grid-template-columns: auto 1fr; gap: 24px; }
.safety svg { width: 36px; height: 36px; stroke: var(--coral); fill: none; stroke-width: 2; }
.safety h3 { margin: 0 0 8px; font-size: 20px; }
.safety p { margin: 0; color: var(--ink-2); }

footer { background: var(--night); color: rgba(255, 255, 255, 0.6); padding: 48px 0; font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer a { text-decoration: none; }
footer a:hover { color: #fff; }

/* 法务 / 支持页 */
.doc { max-width: 760px; padding: 64px 0 96px; }
.doc h1 { font-size: clamp(30px, 4vw, 42px); color: var(--ink); }
.doc .meta { color: var(--ink-3); font-size: 14px; margin-bottom: 36px; }
.doc h2 { font-size: 21px; margin: 40px 0 10px; letter-spacing: -0.01em; }
.doc p, .doc li { color: var(--ink-2); }
.doc ul { padding-left: 22px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { color: var(--ink); font-weight: 600; }
.doc .box { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 24px; margin: 20px 0; }
.doc details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 10px 0; }
.doc summary { cursor: pointer; font-weight: 600; color: var(--ink); }
.doc details p { margin: 10px 0 0; }

@media (max-width: 900px) {
  .hero .wrap, .split, .modes { grid-template-columns: 1fr; }
  .hero .wrap { padding: 56px 0 72px; gap: 56px; }
  .grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .mode, .safety { padding: 26px; }
  .safety { grid-template-columns: 1fr; }
}
@media (max-width: 380px) { .phone { width: 260px; } }
@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .rise.d2 { animation-delay: 0.12s; }
  @keyframes rise { from { opacity: 0; transform: translateY(16px); } }
}
.doc .box p { margin: 0; }
