/* ============================================================
   身材搭子 · 官网样式（唯一共享样式表）
   设计语言与 App 一致：薄荷绿 #12C08A / 墨色 #0F1F1A
   移动端优先，纯 CSS，零依赖
   ============================================================ */

:root {
  --mint: #12C08A;
  --mint-2: #2BD6A0;
  --mint-deep: #0B9A6D;
  --mint-ink: #0A6B4E;
  --mint-50: #EAF9F3;
  --mint-100: #D3F3E6;
  --ink: #0F1F1A;
  --ink-2: #5E6E68;
  --ink-3: #98A6A1;
  --line: #EDF2EF;
  --bg: #FAFCFB;
  --card: #FFFFFF;
  --sd: 0 8px 24px rgba(15, 31, 26, .055);
  --sd-l: 0 18px 44px rgba(15, 31, 26, .12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--mint-deep); text-decoration: none; }
a:hover { color: var(--mint); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }
.brand img { width: 32px; height: 32px; border-radius: 8px; display: block; }
.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a { color: var(--ink-2); font-size: 15px; }
.site-nav a:hover, .site-nav a.active { color: var(--mint-deep); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--mint), var(--mint-deep));
  color: #fff;
  box-shadow: 0 6px 16px rgba(18, 192, 138, .28);
}
.btn-primary:hover { color: #fff; filter: brightness(1.05); }
.btn-ghost {
  background: #fff;
  color: var(--mint-ink);
  border-color: var(--mint-100);
}
.btn-ghost:hover { color: var(--mint-deep); border-color: var(--mint); }
.btn-disabled {
  background: var(--mint-50);
  color: var(--ink-3);
  border: 1px dashed var(--mint-100);
  box-shadow: none;
  cursor: not-allowed;
}
.btn-lg { padding: 14px 34px; font-size: 17px; }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 56px;
  text-align: center;
  background:
    radial-gradient(720px 320px at 50% -80px, var(--mint-50), transparent 70%),
    linear-gradient(180deg, #fff, var(--bg));
}
.hero .app-icon {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  box-shadow: var(--sd-l);
  display: inline-block;
}
.hero h1 {
  margin-top: 22px;
  font-size: 34px;
  letter-spacing: 1px;
}
.hero .slogan {
  margin-top: 10px;
  color: var(--ink-2);
  font-size: 17px;
}
.hero .actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero .meta {
  margin-top: 16px;
  color: var(--ink-3);
  font-size: 13px;
}

/* ---------- 通用区块 ---------- */
.section { padding: 56px 0; }
.section-title { text-align: center; font-size: 26px; }
.section-sub {
  text-align: center;
  color: var(--ink-2);
  margin-top: 8px;
  font-size: 15px;
}

/* ---------- 功能卡片 ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 34px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sd);
  padding: 26px 22px;
}
.feature .f-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--mint-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}
.feature h3 { margin-top: 14px; font-size: 18px; }
.feature p { margin-top: 8px; color: var(--ink-2); font-size: 14.5px; }

/* ---------- 下载区块（首页） ---------- */
.dl-panel {
  background: linear-gradient(160deg, var(--mint-50), #fff 70%);
  border: 1px solid var(--mint-100);
  border-radius: 22px;
  box-shadow: var(--sd);
  padding: 34px 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.dl-panel h3 { font-size: 20px; }
.dl-panel p { color: var(--ink-2); margin-top: 6px; font-size: 14.5px; }
.dl-panel .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.qr-box {
  width: 150px;
  text-align: center;
  color: var(--ink-3);
  font-size: 12.5px;
}
.qr {
  width: 150px;
  height: 150px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-3);
  font-size: 13px;
  margin-bottom: 8px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 34px 0 40px;
  margin-top: 40px;
}
.foot-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 14px;
}
.foot-links a { color: var(--ink-2); }
.foot-links a:hover { color: var(--mint-deep); }
.foot-meta {
  text-align: center;
  color: var(--ink-3);
  font-size: 13px;
  margin-top: 14px;
  line-height: 1.9;
}
.foot-meta .ph { color: var(--mint-ink); }

/* ---------- 法务文档页（隐私政策 / 用户协议） ---------- */
.doc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sd);
  padding: 34px 30px;
  margin: 32px auto;
  max-width: 860px;
}
.doc h1 { font-size: 24px; text-align: center; }
.doc .doc-meta {
  text-align: center;
  color: var(--ink-3);
  font-size: 13.5px;
  margin: 10px 0 26px;
}
.doc h2 {
  font-size: 18px;
  margin: 28px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--mint);
  line-height: 1.5;
}
.doc h3 { font-size: 15.5px; margin: 18px 0 8px; color: var(--mint-ink); }
.doc p { margin: 10px 0; color: var(--ink); font-size: 15px; }
.doc ul, .doc ol { margin: 10px 0 10px 22px; }
.doc li { margin: 6px 0; color: var(--ink); font-size: 15px; }
.doc .tip {
  background: var(--mint-50);
  border: 1px solid var(--mint-100);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--mint-ink);
  font-size: 14px;
  margin: 14px 0;
}
.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 14px;
}
.doc th, .doc td {
  border: 1px solid var(--line);
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
}
.doc th { background: var(--mint-50); color: var(--mint-ink); font-weight: 600; }
.doc .ph { color: var(--mint-deep); font-weight: 600; }

/* ---------- 下载页 ---------- */
.dl-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 34px;
}
.dl-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sd);
  padding: 28px 22px;
  text-align: center;
}
.dl-card .d-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto;
  border-radius: 16px;
  background: var(--mint-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.dl-card h3 { margin-top: 14px; font-size: 18px; }
.dl-card .d-desc { color: var(--ink-2); font-size: 13.5px; margin-top: 6px; min-height: 40px; }
.dl-card .btn { margin-top: 14px; }
.dl-card .d-note { color: var(--ink-3); font-size: 12.5px; margin-top: 10px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 30px auto 0; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--sd);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  position: relative;
  padding-right: 40px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--mint);
  font-size: 20px;
  font-weight: 400;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item .a {
  padding: 0 18px 16px;
  color: var(--ink-2);
  font-size: 14.5px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .features, .dl-cards { grid-template-columns: 1fr; }
  .dl-panel { grid-template-columns: 1fr; }
  .dl-panel .qr-box { margin: 0 auto; }
  .hero h1 { font-size: 28px; }
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 14px; }
  .doc { padding: 24px 18px; }
}

@media (max-width: 480px) {
  .hero { padding: 48px 0 40px; }
  .hero .actions .btn { width: 100%; }
  .site-nav a:not(.keep) { display: none; }
  .section { padding: 40px 0; }
}