/* 汲作官网视觉：跟 App 默认「系统 / 玻璃」主题同一套材料。
   色值对齐 AppearanceTheme / DesignTokens：4pt 网格、圆角 4/8/12/16、
   强调色用 paper 主题的品牌橙 #D97757（玻璃主题走系统蓝，网页没有系统强调色）。
   不加载任何外部字体、脚本或统计。 */

:root {
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-huge: 48px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --accent: #d97757;
  --accent-soft: rgba(217, 119, 87, 0.16);
  --text: #141413;
  --muted: #6e6c63;
  --faint: #8b897f;
  --ink: #141413;
  --on-ink: #fdfcf9;
  --hairline: rgba(20, 20, 19, 0.08);
  --glass: rgba(253, 252, 249, 0.52);
  --glass-strong: rgba(253, 252, 249, 0.72);
  --glass-edge: rgba(255, 255, 255, 0.62);
  --glass-inset: rgba(255, 255, 255, 0.7);
  --shadow: 0 18px 50px -28px rgba(20, 20, 19, 0.38);
  --shadow-window: 0 28px 80px -36px rgba(20, 20, 19, 0.42);
  --bg-a: #dce6f2;
  --bg-b: #f3e4d4;
  --bg-c: #e8efe4;
  --traffic-close: #ff5f57;
  --traffic-min: #febc2e;
  --traffic-zoom: #28c840;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f4f2ec;
    --muted: #a8a59c;
    --faint: #7d7a72;
    --ink: #f4f2ec;
    --on-ink: #1c1c1e;
    --hairline: rgba(255, 255, 255, 0.1);
    --glass: rgba(28, 28, 30, 0.5);
    --glass-strong: rgba(38, 38, 42, 0.68);
    --glass-edge: rgba(255, 255, 255, 0.14);
    --glass-inset: rgba(255, 255, 255, 0.12);
    --shadow: 0 18px 50px -24px rgba(0, 0, 0, 0.55);
    --shadow-window: 0 28px 80px -28px rgba(0, 0, 0, 0.62);
    --bg-a: #1a2230;
    --bg-b: #2a211c;
    --bg-c: #1c2620;
    --accent-soft: rgba(217, 119, 87, 0.22);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100dvh;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", ui-sans-serif, system-ui,
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background: #e8edf2;
}
@media (prefers-color-scheme: dark) {
  body { background: #12141a; }
}

.wallpaper {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(980px 640px at 8% -8%, var(--bg-a), transparent 58%),
    radial-gradient(820px 560px at 94% 6%, var(--bg-b), transparent 54%),
    radial-gradient(720px 480px at 72% 100%, var(--bg-c), transparent 52%),
    radial-gradient(520px 360px at 40% 40%, rgba(217, 119, 87, 0.16), transparent 70%);
}
.wallpaper::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 640px) {
  .page { padding: 0 20px; }
}

.glass {
  background: var(--glass);
  -webkit-backdrop-filter: saturate(180%) blur(28px);
  backdrop-filter: saturate(180%) blur(28px);
  border: 1px solid var(--glass-edge);
  box-shadow: inset 0 1px 0 var(--glass-inset), var(--shadow);
}
.glass-strong {
  background: var(--glass-strong);
}

a { color: inherit; }

.topbar {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 12px 0 0;
  padding: 10px 12px 10px 16px;
  border-radius: 999px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 8px 12px;
  border-radius: 999px;
}
.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.28); }
@media (prefers-color-scheme: dark) {
  .nav-link:hover { background: rgba(255,255,255,0.06); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--on-ink);
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform .18s cubic-bezier(0.16, 1, 0.3, 1), opacity .18s;
}
.btn:hover { opacity: .88; }
.btn:active { transform: scale(0.98); }
.btn-lg { padding: 13px 22px; font-size: 0.98rem; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--hairline);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.18fr);
  gap: 40px;
  align-items: center;
  padding: 56px 0 28px;
  min-height: calc(100dvh - 92px);
}
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    min-height: 0;
    padding-top: 36px;
  }
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 6px 5px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 20px;
}
.chip b {
  color: var(--text);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 2px 10px;
  font-weight: 600;
}
h1 {
  font-size: clamp(2.15rem, 5vw, 3.15rem);
  font-weight: 520;
  line-height: 1.16;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
}
.lede { color: var(--muted); margin: 0; font-size: 1.02rem; max-width: 38ch; }
.lede p { margin: 0 0 12px; }
.lede p:last-child { margin-bottom: 0; }
.cta-row {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.req { color: var(--faint); font-size: 0.84rem; max-width: 28ch; }

.window {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: inset 0 1px 0 var(--glass-inset), var(--shadow-window);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--hairline);
}
.window-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.window-bar i:nth-child(1) { background: var(--traffic-close); }
.window-bar i:nth-child(2) { background: var(--traffic-min); }
.window-bar i:nth-child(3) { background: var(--traffic-zoom); }
.window-title {
  margin-left: 6px;
  font-size: 0.75rem;
  color: var(--faint);
  letter-spacing: 0.01em;
}
.mock-cols {
  display: grid;
  grid-template-columns: 118px 188px minmax(0, 1fr);
  min-height: 420px;
  font-size: 0.78rem;
  line-height: 1.45;
}
@media (max-width: 900px) {
  .mock-cols { grid-template-columns: 200px 1fr; }
  .mock-side { display: none; }
}
@media (max-width: 560px) {
  .mock-cols { grid-template-columns: 1fr; min-height: 320px; }
  .mock-list { display: none; }
}
.mock-side {
  padding: 12px 8px;
  border-right: 1px solid var(--hairline);
  color: var(--muted);
  background: rgba(255,255,255,0.12);
}
@media (prefers-color-scheme: dark) {
  .mock-side { background: rgba(0,0,0,0.12); }
}
.mock-side div { padding: 7px 10px; border-radius: var(--radius-md); }
.mock-side .on {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.mock-list { padding: 10px; border-right: 1px solid var(--hairline); }
.mock-item { padding: 10px 10px 11px; border-radius: var(--radius-lg); }
.mock-item.on { background: var(--accent-soft); }
.mock-item b {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 3px;
}
.mock-item span { color: var(--faint); font-size: 0.7rem; }
.mock-read { padding: 20px 18px; background: var(--glass-strong); min-width: 0; }
.mock-read h4 { margin: 0 0 4px; font-size: 1.05rem; font-weight: 600; letter-spacing: -0.02em; }
.mock-meta { color: var(--faint); font-size: 0.72rem; margin-bottom: 14px; }
.mock-tabs { display: flex; flex-wrap: nowrap; gap: 4px; margin-bottom: 16px; padding: 3px; width: max-content; max-width: 100%; border-radius: 999px; }
.mock-tabs span {
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.7rem;
  white-space: nowrap;
}
.mock-tabs .on { background: var(--ink); color: var(--on-ink); font-weight: 600; }
.mock-read p { margin: 0 0 10px; color: var(--muted); }
.mock-read p b { color: var(--text); }
.mock-chips { margin-top: 16px; display: flex; gap: 6px; flex-wrap: wrap; }
.mock-chips span {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  color: var(--muted);
  font-size: 0.7rem;
}

section { padding: 64px 0 8px; }
.sec-head { margin-bottom: 22px; max-width: 46ch; }
h2 {
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 560;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.sec-head p { color: var(--muted); margin: 0; }

.bento {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 12px;
}
.tile {
  border-radius: var(--radius-xl);
  padding: 22px 22px 20px;
}
.tile h3 { margin: 0 0 8px; font-size: 1.02rem; font-weight: 620; letter-spacing: -0.015em; }
.tile p { margin: 0; color: var(--muted); font-size: 0.93rem; line-height: 1.65; }
.tile-tall { grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; min-height: 240px; }
.tile-wide { grid-column: 2 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.tile-mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
@media (max-width: 820px) {
  .bento { grid-template-columns: 1fr 1fr; }
  .tile-tall { grid-row: auto; min-height: 0; }
  .tile-wide { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; }
  .tile-wide { grid-template-columns: 1fr; }
}

.step {
  border-radius: var(--radius-xl);
  padding: 22px 24px;
  margin-bottom: 12px;
}
.step-top { display: flex; align-items: center; gap: 12px; margin-bottom: 2px; }
.step-n {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--on-ink);
  font-size: 0.78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.step h3 { margin: 0; font-size: 1.04rem; font-weight: 620; }
.step-body { padding-left: 36px; }
.step-body p { color: var(--muted); margin: 8px 0 0; font-size: 0.95rem; }
.step-body ol { margin: 12px 0 0; padding-left: 20px; color: var(--muted); font-size: 0.95rem; }
.step-body li { margin: 7px 0; }
.step-body li b { color: var(--text); }
kbd {
  background: rgba(255,255,255,0.35);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 0.85em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--text);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 8px;
  vertical-align: middle;
}
.aside {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  background: rgba(255,255,255,0.22);
  font-size: 0.9rem;
  color: var(--muted);
}
@media (prefers-color-scheme: dark) {
  .aside { background: rgba(0,0,0,0.18); }
}
.aside b { color: var(--text); font-weight: 600; }

.faq { border-radius: var(--radius-xl); overflow: hidden; }
details { padding: 16px 20px; border-bottom: 1px solid var(--hairline); }
details:last-child { border-bottom: 0; }
summary {
  cursor: pointer;
  font-weight: 550;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--faint); font-size: 1.15rem; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); margin: 12px 0 0; font-size: 0.95rem; max-width: 62ch; }

.article { padding: 36px 0 8px; max-width: 720px; }
.article h1 {
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  margin: 0 0 8px;
}
.updated { color: var(--faint); font-size: 0.88rem; margin: 0 0 28px; }
.article h2 { font-size: 1.16rem; margin: 32px 0 10px; }
.article p, .article li { color: var(--muted); font-size: 0.97rem; }
.article p b, .article li b { color: var(--text); }
.article ul { padding-left: 22px; }
.article li { margin: 8px 0; }
.callout { border-radius: var(--radius-xl); padding: 18px 20px; margin: 8px 0 28px; }
.callout p { margin: 0; }

footer {
  margin: 56px 0 0;
  padding: 22px 4px 48px;
  color: var(--faint);
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
footer a { text-decoration: none; color: var(--muted); }
footer a:hover { color: var(--text); }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}