/* iphone.reflib.com — 唯一的样式表。零 JS，系统字体，浅 / 深色跟随系统。 */

:root {
  --bg: #fbfaf7;
  --bg-2: #f2f0ea;
  --card: #ffffff;
  --ink: #171a19;
  --ink-2: #54605d;
  --ink-3: #8a9491;
  --line: #e4e1d9;
  --brand: #0f766e;
  --brand-ink: #ffffff;
  --brand-soft: #dff3f0;
  --accent: #b45309;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(20, 30, 28, .05), 0 10px 30px -18px rgba(20, 30, 28, .25);
  --measure: 68ch;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1514;
    --bg-2: #141c1a;
    --card: #182120;
    --ink: #e9ecea;
    --ink-2: #a9b4b0;
    --ink-3: #6f7b77;
    --line: #26312e;
    --brand: #2dd4bf;
    --brand-ink: #062b28;
    --brand-soft: #123532;
    --accent: #f59e0b;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 30px -16px rgba(0, 0, 0, .7);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "PingFang HK", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { display: block; max-width: 100%; height: auto; }
code { font: 0.92em/1 ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--bg-2); padding: .1em .35em; border-radius: 6px; }
pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; overflow: auto; font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; }
h1, h2, h3 { font-weight: 700; letter-spacing: -.015em; line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5.5vw, 3.1rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); margin-top: 2.2em; }
h3 { font-size: 1.1rem; margin: 0 0 .3em; }
p { margin: 0 0 1em; }
.inner { max-width: 1080px; margin: 0 auto; padding: 0 22px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--brand); color: var(--brand-ink); padding: 8px 12px; }
.skip:focus { left: 8px; top: 8px; z-index: 10; }

/* 页眉 */
.site-header { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--line); }
.site-header .inner { display: flex; align-items: center; gap: 22px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .06em; color: var(--ink); }
.brand img { border-radius: 8px; }
.site-header nav { display: flex; gap: 18px; margin-left: auto; font-size: .95rem; }
.site-header nav a, .lang { color: var(--ink-2); }
.site-header nav a:hover, .lang:hover { color: var(--brand); text-decoration: none; }
.lang { font-size: .9rem; border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; white-space: nowrap; }
@media (max-width: 720px) {
  .site-header nav { display: none; }
}

/* 首页 */
.hero { padding: 72px 0 40px; background: linear-gradient(180deg, var(--bg-2), var(--bg) 70%); }
.hero .inner { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 40px; align-items: center; }
.kicker { color: var(--brand); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin-bottom: 1em; }
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: var(--measure); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 1.6em; }
.button { display: inline-block; background: var(--brand); color: var(--brand-ink); font-weight: 700; padding: 13px 22px; border-radius: 999px; }
.button:hover { text-decoration: none; filter: brightness(1.06); }
.button.ghost { background: var(--brand-soft); color: var(--brand); }
.store { color: var(--ink-3); font-size: .95rem; }
@media (max-width: 820px) {
  .hero { padding-top: 40px; }
  .hero .inner { grid-template-columns: 1fr; }
}

/* 手机截图外框 */
.phone { margin: 0; justify-self: center; width: min(300px, 78vw); border-radius: 44px; padding: 12px; background: #101312; box-shadow: var(--shadow), inset 0 0 0 1px rgba(255,255,255,.06); }
.phone img { border-radius: 34px; }
.phone.small { width: 100%; max-width: 240px; border-radius: 36px; padding: 9px; }
.phone.small img { border-radius: 28px; }
.phone.aside { width: 220px; border-radius: 34px; padding: 8px; }
.phone.aside img { border-radius: 27px; }

/* 特性 */
.facts-wrap { padding: 30px 0 10px; }
.facts { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.facts li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 20px; box-shadow: var(--shadow); }
.facts b { display: block; font-size: 1.05rem; margin-bottom: .35em; }
.facts span { color: var(--ink-2); font-size: .98rem; }

.privacy { padding: 40px 0; }
.privacy .inner { max-width: 820px; }
.privacy p { font-size: 1.1rem; color: var(--ink-2); }

.screens { padding: 10px 0 70px; }
.gallery { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 26px 18px; }
.gallery li { display: grid; justify-items: center; gap: 10px; }
.gallery figcaption { font-size: .9rem; color: var(--ink-2); text-align: center; }
.note { color: var(--ink-3); font-size: .95rem; }

/* 文档页 */
.doc { padding: 56px 0 80px; }
.doc .inner { max-width: 820px; }
.doc p, .doc li { max-width: var(--measure); }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin-bottom: .4em; }
.doc .meta { color: var(--ink-3); font-size: .95rem; }
.doc .big a { font-size: 1.4rem; font-weight: 700; }
.cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.cards li { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; max-width: none; }
.cards li p { max-width: none; }
.cards li p:last-child { margin-bottom: 0; }
.requests li { margin-bottom: .6em; }
.legal .num { color: var(--brand); margin-right: .3em; }
.legal h2 { font-size: 1.25rem; margin-top: 2em; }

/* 说明书 */
.guide .inner { max-width: 1000px; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 24px 8px; margin: 30px 0 10px; }
.toc h2 { font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 .6em; }
.toc ol { columns: 2; column-gap: 30px; margin: 0; padding-left: 1.2em; }
.toc li { break-inside: avoid; margin-bottom: .3em; }
@media (max-width: 600px) { .toc ol { columns: 1; } }
.chapter { padding: 26px 0; border-bottom: 1px solid var(--line); }
.chapter:last-of-type { border-bottom: 0; }
.chapter h2 { margin-top: 0; }
.chapter.with-shot { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 34px; align-items: start; }
.chapter .text p:last-child { margin-bottom: 0; }
@media (max-width: 720px) {
  .chapter.with-shot { grid-template-columns: 1fr; }
  .phone.aside { justify-self: start; }
}

/* 页脚 */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0 50px; color: var(--ink-2); font-size: .92rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 16px; }
.site-footer nav a { color: var(--ink-2); }
.site-footer .copy { color: var(--ink-3); }