/*
 * Readaily 落地页样式。
 * 两个页面（首页、隐私政策）共用同一套壳：羊皮纸底 + 衬线中文 + 660px 单栏。
 * 颜色取自设计稿，改配色只动 :root 里的变量。
 */

:root {
  --paper: #f6ecd6;
  --ink: #3b2c1c;
  --ink-soft: #5c4a34;
  --muted: #8a7355;
  --rule: #dccb9e;
  --link: #5b7a3e;
  --link-hover: #47612f;
  --btn: #4a3524;
  --btn-hover: #3b2a1c;
  --pill-bg: #e9dcbc;
  --pill-ink: #6e5a3f;
  --pill-border: #c4ae85;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--paper);
}

body {
  font-family: "Noto Serif SC", "Songti SC", serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

::selection {
  background: var(--rule);
}

img {
  max-width: 100%;
}

/* 布局壳 */

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 24px;
}

.col {
  width: 100%;
  max-width: 660px;
  display: flex;
  flex-direction: column;
}

/* 页眉 */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

a.brand:hover {
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(59, 44, 28, 0.18);
}

.brand span {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

/* 首页：主视觉 */

.hero {
  padding: 88px 0 56px;
}

.hero h1 {
  font-size: 40px;
  line-height: 1.35;
  font-weight: 700;
  margin: 0 0 20px;
  text-wrap: pretty;
}

.hero-sub {
  font-size: 15px;
  color: var(--muted);
  margin: 0 0 28px;
  letter-spacing: 0.01em;
}

.lede {
  font-size: 17px;
  line-height: 1.9;
  margin: 0;
  max-width: 560px;
  text-wrap: pretty;
}

.lede-en {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin: 12px 0 0;
  max-width: 560px;
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--btn);
  color: var(--paper);
  padding: 14px 26px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--btn-hover);
  color: var(--paper);
  text-decoration: none;
}

/* TestFlight 公开链接还没开放时占位，过审后换成 .btn-primary */
.pill-soon {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--pill-bg);
  color: var(--pill-ink);
  padding: 14px 26px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  border: 1px dashed var(--pill-border);
}

.cta-note {
  font-size: 13px;
  color: var(--muted);
}

/* 首页：特性网格 */

.features {
  border-top: 1px solid var(--rule);
  padding: 48px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px 40px;
}

.features h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
}

.features p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--ink-soft);
}

.features .en {
  font-size: 13px;
  line-height: 1.7;
  margin: 6px 0 0;
  color: var(--muted);
}

/* 首页：说明段落 */

.band {
  border-top: 1px solid var(--rule);
  padding: 48px 0;
}

.band h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px;
}

.band p {
  font-size: 15px;
  line-height: 1.9;
  margin: 0;
  max-width: 560px;
}

.band .en {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  margin: 10px 0 0;
}

/* 页脚 */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 32px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-contact span:first-child {
  font-size: 14px;
  color: var(--ink-soft);
}

.footer-contact span:last-child,
.footer-copy {
  font-size: 13px;
  color: var(--muted);
}

/* 隐私政策页 */

.doc {
  padding: 64px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.doc h1 {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 8px;
}

.doc-sub {
  font-size: 15px;
  color: var(--muted);
  margin: 0 0 12px;
}

.doc-date {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.doc h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
}

.doc p {
  font-size: 15px;
  line-height: 1.9;
  margin: 0;
}

.doc .en {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  margin: 8px 0 0;
}

.doc ul {
  font-size: 15px;
  line-height: 1.9;
  margin: 10px 0 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc .after-list {
  margin: 12px 0 0;
}

.doc-footer {
  border-top: 1px solid var(--rule);
  padding: 28px 0 48px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: var(--muted);
}

/* 手机 —— 落地页主要靠微信分享打开，窄屏是常态而不是边缘情况 */

@media (max-width: 600px) {
  .page {
    padding: 0 20px;
  }

  .hero {
    padding: 56px 0 40px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .lede {
    font-size: 16px;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .band,
  .features {
    padding: 40px 0;
  }

  .doc {
    padding: 48px 0 24px;
    gap: 32px;
  }

  .doc h1 {
    font-size: 27px;
  }

  .site-footer {
    padding: 28px 0 40px;
  }
}