:root {
  --bg: #F7F6F3;
  --paper: #FFFEFA;
  --well: #F1EFEA;
  --ink: #30302F;
  --muted: #7F7B74;
  --line: #E7E5E0;
  --accent: #75618E;
  --accent-soft: #EEE8F2;
  --serif: "New York", ui-serif, "Iowan Old Style", "Palatino", Georgia, "Songti SC", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", "Noto Sans", sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #19191D; --paper: #232327; --well: #2B2B30; --ink: #E6E3E9; --muted: #9C98A3;
    --line: #34343A; --accent: #B9A0D0; --accent-soft: #302A38;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 680px; margin: 0 auto; padding: 0 24px; }

/* 顶栏 */
header.top { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font: 600 20px/1 var(--serif); }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.brand .dot { color: var(--accent); }
nav.links { display: flex; gap: 22px; font-size: 15px; }
nav.links a { color: var(--muted); }
nav.links a:hover { color: var(--ink); text-decoration: none; }

/* 首屏 */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; padding: 36px 0 72px; }
.eyebrow { font: 600 13px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 0 0 16px; }
h1 { font: 600 clamp(38px, 5.4vw, 58px)/1.12 var(--serif); margin: 0 0 20px; letter-spacing: -.01em; }
h1 .dot, h2 .dot { color: var(--accent); }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 30px; max-width: 30em; }
.badge img { height: 54px; display: block; }
.soon { font-size: 14px; color: var(--muted); margin-top: 10px; }
.phones { position: relative; height: 620px; }
.phone { position: absolute; width: 270px; border-radius: 40px; overflow: hidden; background: var(--paper);
  box-shadow: 0 30px 60px -20px rgba(40, 32, 50, .35), 0 0 0 1px var(--line); }
.phone img { display: block; width: 100%; }
.phone.a { left: 0; top: 40px; transform: rotate(-4deg); }
.phone.b { right: 0; top: 0; transform: rotate(3deg); }

/* 功能 */
section.features { padding: 24px 0 80px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.card h3 { font: 600 20px/1.3 var(--serif); margin: 0 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
.note { text-align: center; color: var(--muted); font-size: 14px; margin: 34px auto 0; max-width: 40em; }

/* 文档页 */
.doc { padding: 20px 0 80px; }
.doc h1 { font-size: clamp(32px, 4.4vw, 44px); }
.doc h2 { font: 600 22px/1.35 var(--serif); margin: 36px 0 10px; }
.doc p, .doc li { color: var(--ink); }
.doc .meta { color: var(--muted); font-size: 14px; }
.doc ul { padding-left: 1.2em; }
.faq dt { font: 600 18px/1.4 var(--serif); margin-top: 26px; }
.faq dd { margin: 6px 0 0; color: var(--muted); }

/* 打赏 */
.tip { padding: 20px 0 90px; text-align: center; }
.tip .lead { margin-left: auto; margin-right: auto; }
.amounts { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin: 8px 0 18px; }
.amounts button, .go {
  font: 600 17px/1 var(--sans); border-radius: 999px; cursor: pointer; transition: transform .1s;
}
.amounts button { background: var(--paper); color: var(--ink); border: 1.5px solid var(--line); padding: 14px 24px; min-width: 88px; }
.amounts button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.custom { display: inline-flex; align-items: center; gap: 6px; background: var(--paper); border: 1.5px solid var(--line);
  border-radius: 999px; padding: 0 18px; height: 50px; }
.custom input { width: 90px; border: 0; background: transparent; color: var(--ink); font: 600 17px var(--sans); outline: none; }
.go { background: var(--accent); color: #fff; border: 0; padding: 17px 40px; margin-top: 22px; }
.go:disabled { opacity: .5; cursor: default; }
.go:active, .amounts button:active { transform: scale(.97); }
.fine { color: var(--muted); font-size: 13.5px; margin-top: 22px; }
.err { color: #b3261e; font-size: 14px; min-height: 1.4em; margin-top: 12px; }

/* 底栏 */
footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 24px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
footer a { color: var(--muted); }
select.lang { font: 14px var(--sans); color: var(--muted); background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 12px; text-align: center; }
  .lead { margin-left: auto; margin-right: auto; }
  .badge { display: inline-block; }
  .phones { height: 480px; max-width: 420px; margin: 0 auto; width: 100%; }
  .phone { width: 210px; border-radius: 32px; }
  .grid { grid-template-columns: 1fr; }
  nav.links { gap: 16px; }
}
@media (max-width: 420px) {
  .wrap, .narrow { padding: 0 16px; }
  nav.links .hide-s { display: none; }
  .phones { height: 400px; }
  .phone { width: 175px; }
}
.store { display: inline-flex; align-items: center; gap: 10px; background: #111; color: #fff; border-radius: 14px;
  padding: 14px 24px; font: 600 17px/1 var(--sans); box-shadow: 0 0 0 1px rgba(255,255,255,.12); }
.store:hover { text-decoration: none; background: #000; }
.store svg { width: 22px; height: 22px; }
@media (prefers-color-scheme: dark) { .store { background: #fff; color: #111; } .store:hover { background: #eee; } }
:lang(zh-Hans) h1, :lang(zh-Hant) h1, :lang(ja) h1, :lang(ko) h1 { font-size: clamp(32px, 4.2vw, 48px); line-height: 1.25; }
/* 别让最后一两个字单独掉到下一行 */
h1, h2, h3, .lead, .note, .card p, .fine { text-wrap: balance; }
p, li, dd { text-wrap: pretty; }