/* ==========================================================================
   约撩 官网 · 共用样式
   设计基调与 App 一致：暖白底 + 珊瑚粉渐变 + 圆角卡片
   ========================================================================== */

:root {
  /* 品牌色 —— 与 App 内 AppTokens 保持一致 */
  --coral: #FF8A76;
  --rose: #FF7E9D;
  --peach: #FFA98C;
  --pink: #FF9BB5;
  --brand-grad: linear-gradient(135deg, #FFA07E 0%, #FF7E9D 100%);
  --brand-grad-soft: linear-gradient(120deg, #F2705A 0%, #EE5F86 60%, #F58AA8 100%);
  --text-grad: linear-gradient(120deg, #F2705A 0%, #EE5F86 60%, #F58AA8 100%);

  /* 中性色 */
  --bg: #FFF8F4;
  --bg-deep: #FBEEE7;
  --card: #FFFFFF;
  --text: #453733;
  --text-2: #8A7870;
  --text-3: #BCA9A1;
  --line: rgba(255, 220, 208, .75);
  --line-soft: rgba(255, 228, 218, .9);

  /* 语义色 */
  --ok: #2FA36B;
  --warn: #D98324;
  --danger: #D9534F;

  /* 阴影 */
  --sh-sm: 0 2px 10px rgba(214, 148, 130, .08);
  --sh-md: 0 6px 20px rgba(214, 148, 130, .13);
  --sh-lg: 0 16px 44px rgba(214, 148, 130, .18);

  --radius: 20px;
  --wrap: 1080px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.75;
  font-size: 16px;
}

a { color: var(--coral); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ── 顶栏 ───────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 248, 244, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-in {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 62px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  color: var(--text);
  text-decoration: none;
  flex: 0 0 auto;
}
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; display: block; }

.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a {
  padding: 7px 13px;
  border-radius: 9px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-2);
  text-decoration: none;
  transition: background .18s, color .18s;
}
.nav a:hover { background: rgba(255, 168, 140, .12); color: var(--coral); text-decoration: none; }
.nav a.on { background: rgba(255, 168, 140, .16); color: var(--coral); }

@media (max-width: 860px) {
  .topbar-in { height: auto; padding: 10px 0; flex-wrap: wrap; gap: 10px; }
  .nav { margin-left: 0; width: 100%; gap: 2px; }
  .nav a { padding: 6px 10px; font-size: 13.5px; }
}

/* ── 页脚 ───────────────────────────────────────────── */
.foot {
  margin-top: 70px;
  padding: 40px 0 34px;
  background: #fff;
  border-top: 1px solid var(--line-soft);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 34px;
}
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; gap: 26px; } }
.foot h4 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 800;
  color: var(--text);
}
.foot ul { margin: 0; padding: 0; list-style: none; }
.foot li { margin-bottom: 8px; }
.foot li a { color: var(--text-2); font-size: 14px; }
.foot li a:hover { color: var(--coral); }
.foot-about { font-size: 13.5px; color: var(--text-3); line-height: 1.8; max-width: 340px; }
.foot-btm {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--text-3);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── 通用组件 ───────────────────────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--line-soft);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-3);
}
.eyebrow svg { color: var(--peach); }

h1.gt {
  margin: 0;
  font-size: clamp(30px, 6vw, 46px);
  font-weight: 800;
  letter-spacing: -.5px;
  line-height: 1.25;
  background: var(--text-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
h2.gt {
  margin: 0 0 12px;
  font-size: clamp(23px, 3.6vw, 30px);
  font-weight: 800;
  letter-spacing: -.3px;
}
h3.gt {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
}
.lead { margin: 14px 0 0; font-size: 16.5px; color: var(--text-2); line-height: 1.85; }

.grad-text {
  background: var(--text-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--sh-sm);
  padding: 26px 24px;
}

.sec { padding: 62px 0; }
.sec-alt { background: #fff; border-block: 1px solid var(--line-soft); }
.sec-head { max-width: 720px; margin-bottom: 34px; }
.sec-head p { margin: 10px 0 0; color: var(--text-2); font-size: 15.5px; line-height: 1.85; }

/* 文档页（隐私政策 / 协议 / 声明） */
.doc-hero {
  padding: 46px 0 26px;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, #FFF3EE 0%, var(--bg) 100%);
}
.doc-hero .meta {
  display: inline-block;
  margin-top: 18px;
  padding: 7px 16px;
  border-radius: 11px;
  background: rgba(255, 255, 255, .75);
  border: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--text-2);
}
.toc {
  background: rgba(255, 255, 255, .72);
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  padding: 18px 22px;
  margin: 26px 0;
}
.toc .t { font-size: 12.5px; font-weight: 800; color: var(--text-3); margin-bottom: 10px; }
.toc ol { margin: 0; padding-left: 20px; font-size: 14.5px; }
.toc li { margin-bottom: 6px; }
.toc a { color: var(--text-2); }
.toc a:hover { color: var(--coral); }

.doc-sec {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--sh-sm);
  padding: 24px 26px;
  margin-bottom: 16px;
}
.doc-sec > h3 {
  margin: 0 0 14px;
  font-size: 17.5px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}
.doc-sec > h3::before {
  content: '';
  width: 4px;
  height: 17px;
  border-radius: 3px;
  background: var(--brand-grad);
  box-shadow: 0 2px 6px rgba(255, 140, 120, .4);
  flex: 0 0 auto;
}
.doc-sec p { margin: 0 0 12px; font-size: 15px; color: #5A4840; }
.doc-sec p:last-child { margin-bottom: 0; }
.doc-sec ul.clean { margin: 0 0 12px; padding-left: 20px; font-size: 15px; color: #5A4840; }
.doc-sec ul.clean li { margin-bottom: 7px; }
.doc-sec ul.clean li::marker { color: var(--coral); }
.doc-sec strong { color: var(--text); font-weight: 700; }

table.tb { width: 100%; border-collapse: collapse; font-size: 14px; margin: 6px 0 0; }
table.tb th, table.tb td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--line); }
table.tb th { background: #FFF7F2; font-weight: 700; color: var(--text); font-size: 13.5px; white-space: nowrap; }
table.tb th:first-child { border-radius: 10px 0 0 0; }
table.tb th:last-child { border-radius: 0 10px 0 0; }
table.tb td:first-child { font-weight: 600; color: var(--text); white-space: nowrap; }
table.tb tr:last-child td { border-bottom: none; }
.tb .no { color: var(--text-3); }
.tb .yes { color: var(--ok); font-weight: 700; }

.note {
  padding: 15px 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, #FFF7F2, #FFF1F4);
  border: 1px solid rgba(255, 235, 228, .9);
  font-size: 13.5px;
  color: #B4978C;
  display: flex;
  gap: 11px;
  margin-top: 4px;
}
.note svg { flex: 0 0 auto; margin-top: 3px; color: #FFB8A4; }
.note b { color: #8A6A60; }

@media (max-width: 560px) {
  .doc-sec { padding: 20px 18px; }
  table.tb, table.tb thead, table.tb tbody, table.tb tr,
  table.tb th, table.tb td { display: block; }
  table.tb thead { display: none; }
  table.tb tr { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 9px; padding: 5px 0; }
  table.tb th { display: none; }
  table.tb td { border: none; padding: 6px 14px; font-size: 13.5px; }
  table.tb td:first-child {
    background: #FFF7F2; border-radius: 8px; margin: 5px 8px 3px; padding: 7px 10px;
  }
  table.tb td::before { content: attr(data-l); color: var(--text-3); font-size: 12px; display: block; }
  table.tb td:first-child::before { display: none; }
}

/* 返回顶部 */
.top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-md);
  display: grid;
  place-items: center;
  color: var(--coral);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
  z-index: 60;
}
.top.show { opacity: 1; pointer-events: auto; }