/* 一天天官网。颜色取自 App 的 scripts/gen_colors.py：底色 bgBase，卡片 bgCard，强调色 accentContent；
   截图底下那层暖白是商店截图的底色（design/store/screenshots/compose.py 的 BG）。
   字体和 App 一样用系统圆体，中文落到苹方。 */

:root {
  --bg: #f9f7f4;
  --card: #ffffff;
  --inset: #f2efeb;
  --fg: #2e2825;
  --fg2: #6b625c;
  --line: rgba(46, 40, 37, 0.1);
  --accent: #b8522b;
  --accent-soft: #ffe8da;
  --shot-bg: #f9f1e9;
  --shade: rgba(120, 72, 40, 0.18);
  --glow: rgba(247, 196, 110, 0.32);
  --sans: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --gutter: max(20px, env(safe-area-inset-left), env(safe-area-inset-right));
  --page: 960px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1816;
    --card: #262321;
    --inset: #312d2a;
    --fg: #f5f1ec;
    --fg2: #beb5ad;
    --line: rgba(245, 241, 236, 0.1);
    --accent: #ffa27c;
    --accent-soft: #4a2d20;
    --shade: rgba(0, 0, 0, 0.5);
    --glow: rgba(247, 196, 110, 0.12);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  overflow-x: hidden;
  overflow-x: clip;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 var(--sans);
  -webkit-font-smoothing: antialiased;
}
:lang(en) body, body:lang(en) { line-height: 1.6; }

::selection { background: rgba(247, 196, 110, 0.45); }

a {
  color: var(--accent);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, currentColor 40%, transparent);
  text-underline-offset: 0.22em;
}
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

img { max-width: 100%; display: block; }

.wrap {
  width: 100%;
  max-width: calc(var(--page) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* 顶栏：右边是 App 里 SegmentedChoice 那样的分段控件 */
.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-block: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
}
.brand img { width: 30px; height: 30px; border-radius: 22.5%; }
.top nav {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: var(--inset);
  font-size: 14px;
  line-height: 1.4;
}
.top > nav:first-of-type { margin-left: auto; }
.top nav a {
  padding: 5px 14px;
  border-radius: 999px;
  color: var(--fg2);
  text-decoration: none;
  white-space: nowrap;
}
.top nav a:hover { color: var(--fg); }
.top nav a[aria-current] { background: var(--card); color: var(--fg); font-weight: 600; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); }
.top nav.lang { padding: 0; background: none; font-size: 13px; }
.top nav.lang a { padding: 5px 4px; }

/* 首页 */
.hero {
  position: relative;
  isolation: isolate;
  padding-block: 56px 48px;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  top: 0;
  width: min(760px, 120vw);
  height: 420px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--glow), transparent);
  pointer-events: none;
}
.hero .icon {
  width: 132px;
  height: 132px;
  margin: 0 auto 28px;
  filter: drop-shadow(0 18px 28px var(--shade));
}
.hero h1 {
  margin: 0;
  font-weight: 700;
  font-size: 52px;
  line-height: 1.2;
  letter-spacing: 0.04em;
}
.hero h1:lang(en) { letter-spacing: 0; }
.hero .lead {
  margin: 14px 0 0;
  font-weight: 600;
  font-size: 22px;
  line-height: 1.5;
}
.hero .sub {
  margin: 12px auto 0;
  max-width: 34em;
  color: var(--fg2);
  text-wrap: pretty;
}
.badge {
  display: inline-block;
  margin-top: 28px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}

/* 截图：七张横着滑，宽屏上一屏四张 */
.shots {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--gutter);
  scrollbar-width: thin;
  padding-block: 12px 40px;
  margin-bottom: 32px;
}
.shots::after { content: ""; flex: 0 0 1px; }
.shots img {
  flex: 0 0 calc((100% - 3 * 20px) / 4);
  min-width: 0;
  height: auto;
  aspect-ratio: 1320 / 2868;
  border-radius: 22px;
  background: var(--shot-bg);
  box-shadow: 0 0 0 1px var(--line), 0 24px 44px -26px var(--shade);
  scroll-snap-align: start;
}

.features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding-block: 0 80px;
}
.features > div {
  padding: 22px 24px 24px;
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line);
}
.features h2 {
  margin: 0 0 6px;
  font-weight: 600;
  font-size: 19px;
  line-height: 1.5;
}
.features p { margin: 0; color: var(--fg2); font-size: 15px; }

/* 正文页：一栏 */
.doc { padding-block: 40px 88px; }
.doc > * { max-width: 40rem; }
.doc h1 {
  margin: 0 0 6px;
  font-weight: 700;
  font-size: 38px;
  line-height: 1.3;
}
.doc .meta { margin: 0 0 32px; color: var(--fg2); font-size: 15px; }
.doc .lead { font-size: 17px; margin-bottom: 8px; }
.doc h2 {
  margin: 48px 0 10px;
  font-weight: 600;
  font-size: 23px;
  line-height: 1.45;
}
.doc h3 {
  margin: 30px 0 6px;
  font-weight: 600;
  font-size: 18px;
  line-height: 1.5;
}
.doc p, .doc ul { margin: 0 0 14px; }
.doc dl { margin: 0 0 14px; }
.doc dt { margin-top: 16px; font-weight: 600; }
.doc dd { margin: 2px 0 0; color: var(--fg2); }

/* 支持页的邮箱：一张白卡 */
.card {
  margin: 0 0 16px;
  padding: 22px 26px 20px;
  border-radius: 22px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line);
}
.card .big { font-size: 21px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.card .note { margin: 6px 0 0; color: var(--fg2); font-size: 15px; }

/* 页脚 */
.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  position: relative;
  padding-block: 26px max(40px, env(safe-area-inset-bottom));
  font-size: 13px;
  color: var(--fg2);
}
.foot::before {
  content: "";
  position: absolute;
  top: 0;
  inset-inline: var(--gutter);
  border-top: 1px solid var(--line);
}
.foot nav { display: flex; gap: 2px 18px; flex-wrap: wrap; }
.foot a { color: var(--fg2); text-decoration: none; }
.foot a:hover { color: var(--fg); }

@media (max-width: 760px) {
  .shots img { flex-basis: calc((100% - 2 * 16px) / 2.6); }
  .shots { gap: 16px; }
}

@media (max-width: 600px) {
  .top { row-gap: 6px; padding-top: 10px; }
  .top nav { font-size: 13px; }
  .top nav a { padding: 5px 12px; }
  .top nav.lang { order: -1; flex-basis: 100%; justify-content: flex-end; font-size: 12px; }
  .hero { padding-block: 36px 36px; }
  .hero .icon { width: 108px; height: 108px; margin-bottom: 22px; }
  .hero h1 { font-size: 42px; }
  .hero .lead { font-size: 19px; }
  .shots { gap: 14px; scrollbar-width: none; }
  .shots::-webkit-scrollbar { display: none; }
  .shots img { flex-basis: 64%; border-radius: 18px; }
  .features { grid-template-columns: minmax(0, 1fr); gap: 14px; padding-bottom: 60px; }
  .features > div { padding: 18px 20px 20px; }
  .doc { padding-block: 28px 72px; }
  .doc h1 { font-size: 32px; }
  .doc h2 { margin-top: 40px; font-size: 21px; }
  .card { padding: 18px 20px 16px; border-radius: 20px; }
  .card .big { font-size: 18px; }
}