/* 屯着听官网 · 共享样式 v3
   视觉令牌与屯着听 App 实际代码（theme/tokens.dart）一致；
   v3：圆润化与暖化，弱化生硬的分割线与西文杂志式排版，更贴近国内用户的审美习惯 */

:root {
  --bg:      #F8F6F1;
  --surface: #FFFFFF;
  --fg:      #2A251E;
  --muted:   #736B5C;
  --border:  #E9E4D9;
  --accent:  #BB3F27;
  --brand:   #F5A65B;

  --accent-soft: color-mix(in oklch, var(--accent) 10%, var(--surface));
  --fg-soft:     color-mix(in oklch, var(--fg) 6%, transparent);
  --line-soft:   color-mix(in oklch, var(--accent) 26%, transparent);
  --shadow-warm: 0 12px 30px -18px rgba(74, 56, 32, 0.28);
  --shadow-lift: 0 16px 36px -18px rgba(74, 56, 32, 0.32);

  --font-display: 'Source Han Serif SC', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --font-body:    'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Source Han Sans SC', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono:    ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, monospace;

  --fs-h1: clamp(32px, 5vw, 54px);
  --fs-h2: clamp(25px, 3.4vw, 38px);
  --fs-h3: 20px;
  --fs-lead: 18px;
  --fs-body: 16px;
  --fs-meta: 13px;

  --gap-xs: 8px;
  --gap-sm: 12px;
  --gap-md: 20px;
  --gap-lg: 32px;
  --gap-xl: 56px;
  --gap-2xl: 96px;
  --container: 1120px;
  --prose: 760px;
  --gutter: 32px;

  --radius: 14px;
  --radius-lg: 24px;
  --radius-pill: 999px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
p { text-wrap: pretty; margin: 0; }
h1, h2, h3, h4 { text-wrap: balance; margin: 0; }
hr.rule { border: 0; border-top: 1px solid var(--border); margin: 0; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.28s ease, transform 0.28s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .wave span, .phone-cover-wrap::before { animation: none !important; }
}

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(48px, 8vw, var(--gap-2xl)); }
.section + .section { border-top: 1px solid var(--border); }
.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--gap-md); }
.row { display: flex; align-items: center; gap: var(--gap-md); }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--gap-md); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-md); }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--gap-xl); align-items: start; }
@media (min-width: 561px) and (max-width: 920px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 920px) {
  .grid-2, .grid-3, .grid-2-1 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- 文字层级 ---------- */
.h1, h1 { font-family: var(--font-display); font-size: var(--fs-h1); line-height: 1.18; letter-spacing: 0; margin: 0; }
.h2, h2 { font-family: var(--font-display); font-size: var(--fs-h2); line-height: 1.25; letter-spacing: 0; margin: 0; }
.h3, h3 { font-size: var(--fs-h3); font-weight: 600; line-height: 1.45; margin: 0; }
.lead { font-size: var(--fs-lead); line-height: 1.8; color: var(--muted); max-width: 34em; margin: 0; }
.eyebrow {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin: 0 0 var(--gap-md);
}
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); flex-shrink: 0; }
.meta { font-size: var(--fs-meta); color: var(--muted); }
.num  { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------- 导航 ---------- */
.topnav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topnav-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 12px; gap: var(--gap-md); }
.topnav .logo {
  font-family: var(--font-display); font-size: 20px; font-weight: 600; letter-spacing: 0.02em; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 9px;
}
.logo-mark { width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0; }
img.logo-mark { object-fit: cover; display: block; box-shadow: 0 1px 3px rgba(27, 26, 23, 0.18); }
.pagefoot .logo .logo-mark { width: 22px; height: 22px; border-radius: 6px; }
.dl-bar-logo { width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0; object-fit: cover; }
.topnav nav { display: flex; align-items: center; gap: var(--gap-lg); }
.topnav nav > a, .topnav nav > .nav-drop > summary { font-size: 14px; color: var(--muted); cursor: pointer; list-style: none; border-radius: 8px; padding: 4px 2px; }
.topnav nav > a:hover, .nav-drop > summary:hover { color: var(--fg); }
.topnav nav a:focus-visible, .nav-drop > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.nav-drop { position: relative; }
.nav-drop > summary::-webkit-details-marker { display: none; }
.nav-drop > summary::after { content: ' ▾'; font-size: 11px; }
.nav-drop[open] > summary { color: var(--fg); }
.nav-drop-panel {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  min-width: 210px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 6px; box-shadow: var(--shadow-lift);
}
.nav-drop-panel a { display: block; padding: 9px 12px; border-radius: 10px; font-size: 14px; color: var(--fg); }
.nav-drop-panel a:hover { background: var(--fg-soft); }
.nav-drop-panel a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.nav-drop-panel a small { display: block; color: var(--muted); font-size: 12px; }

/* 移动端折叠菜单（汉堡按钮，CSS-only details 实现） */
.nav-mobile { display: none; }
@media (max-width: 920px) {
  .topnav nav { display: none; }
  .topnav .topnav-inner > .btn { display: none; }
  .nav-mobile { display: block; position: relative; }
  .nav-mobile > summary {
    list-style: none; width: 44px; height: 44px;
    display: grid; place-items: center;
    border-radius: 12px; cursor: pointer; color: var(--fg);
  }
  .nav-mobile > summary::-webkit-details-marker { display: none; }
  .nav-mobile > summary svg { width: 22px; height: 22px; }
  .nav-mobile > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .nav-mobile[open] > summary { background: var(--fg-soft); }
  .nav-mobile-panel {
    position: absolute; right: 0; top: calc(100% + 8px);
    width: 250px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
    padding: 8px; box-shadow: var(--shadow-lift);
    display: flex; flex-direction: column; gap: 2px;
  }
  .nav-mobile-panel > a {
    padding: 11px 14px; border-radius: 12px; font-size: 15px; color: var(--fg);
  }
  .nav-mobile-panel > a:hover { background: var(--fg-soft); }
  .nav-mobile-panel > a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
  .nav-mobile-panel > a small { display: block; color: var(--muted); font-size: 12px; margin-top: 1px; }
  .nav-mobile-panel .btn { margin: 8px 8px 4px; justify-content: center; }
}

.pagefoot { padding-block: var(--gap-xl); color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); }
.pagefoot .row-between { flex-wrap: wrap; gap: var(--gap-md); }
.pagefoot a { color: var(--muted); border-radius: 6px; }
.pagefoot a:hover { color: var(--fg); }
.pagefoot a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- 按钮（胶囊形） ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  min-height: 44px;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-primary {
  background: var(--accent); color: var(--surface); border-color: var(--accent);
  box-shadow: 0 8px 18px -10px color-mix(in oklch, var(--accent) 70%, black);
}
.btn-primary:hover {
  background: color-mix(in oklch, var(--accent) 88%, black);
  border-color: color-mix(in oklch, var(--accent) 88%, black);
  box-shadow: 0 10px 22px -10px color-mix(in oklch, var(--accent) 75%, black);
}
.btn-secondary { background: var(--surface); color: var(--fg); border-color: var(--border); }
.btn-secondary:hover { border-color: color-mix(in oklch, var(--accent) 45%, var(--border)); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--fg); border-color: transparent; padding-inline: 10px; }
.btn-ghost:hover { color: var(--accent); }
.btn-arrow::after { content: '→'; transition: transform 0.15s ease; }
.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- 卡片与标签 ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 6px 18px -14px rgba(74, 56, 32, 0.18);
}
.card-flat { border-top: 2px solid var(--line-soft); padding-top: var(--gap-md); border-radius: 2px; }

.feature-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: none;
  border-radius: 14px;
  color: var(--accent);
  background: var(--accent-soft);
}
.feature-mark svg { width: 20px; height: 20px; }
.feature .feature-mark { margin-bottom: var(--gap-md); }
.feature h3 { margin-bottom: 6px; }
.feature p  { margin: 0; color: var(--muted); font-size: 15px; }

.tag {
  display: inline-flex; align-items: center;
  padding: 5px 13px;
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 13px;
}
.tag-accent { color: var(--accent); border-color: color-mix(in oklch, var(--accent) 35%, var(--border)); background: var(--accent-soft); }

/* ---------- 首屏 ---------- */
.hero { padding-block: clamp(56px, 8vw, 104px); }
.hero h1 { margin-bottom: var(--gap-md); }
.hero .lead { margin-bottom: var(--gap-lg); }
.hero-cta { display: inline-flex; gap: var(--gap-sm); flex-wrap: wrap; }
.hero-split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--gap-2xl); align-items: center; }
@media (max-width: 920px) { .hero-split { grid-template-columns: 1fr; } }
.hero-center { text-align: center; max-width: 780px; margin-inline: auto; }
.hero-center .lead { margin-inline: auto; }
.hero-center .hero-cta { justify-content: center; }
.hero-center .eyebrow { justify-content: center; }

/* ---------- 手机示意（按 App 真实界面重建） ---------- */
.phone-wrap { display: flex; flex-direction: column; align-items: center; gap: var(--gap-md); }
.phone {
  width: min(300px, 78vw);
  aspect-ratio: 9 / 19;
  background: var(--fg);
  border-radius: 46px;
  padding: 11px;
  box-shadow: var(--shadow-lift);
}
.phone-screen {
  height: 100%;
  border-radius: 36px;
  background: var(--bg);
  color: var(--fg);
  padding: 16px 16px 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}
.phone-status { display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono); font-size: 12px; color: var(--fg); }
.phone-topline { margin-top: 14px; display: flex; justify-content: space-between; align-items: baseline; }
.phone-label { font-size: 12px; letter-spacing: 0.1em; color: var(--muted); }
.phone-queue { font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

.app-cover {
  background:
    radial-gradient(120% 90% at 20% 15%, #f6cf9d 0%, transparent 55%),
    radial-gradient(100% 100% at 85% 90%, #d8c7ae 0%, transparent 60%),
    linear-gradient(160deg, #efe6d6 0%, #d9c8ad 100%);
}
.phone-cover-wrap { margin-top: 12px; display: grid; place-items: center; position: relative; }
.phone-cover-wrap::before {
  content: ''; position: absolute; top: 2px; bottom: 2px; left: 19%; right: 19%;
  border-radius: 30px;
  border: 1.5px solid color-mix(in oklch, var(--accent) 50%, transparent);
  animation: halo 4.4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes halo { 0%, 100% { transform: scale(0.95); opacity: 0.25; } 50% { transform: scale(1.06); opacity: 0.75; } }
.phone-cover {
  width: 62%;
  aspect-ratio: 1;
  border-radius: 26px;
  box-shadow: 0 14px 28px -14px rgba(43, 32, 20, 0.35);
}
.phone-title { margin-top: 12px; font-size: 15.5px; font-weight: 700; line-height: 1.4; text-align: center; }
.phone-source { margin-top: 3px; font-size: 12px; color: var(--muted); text-align: center; }

.wave { margin-top: 10px; display: flex; align-items: center; gap: 3px; height: 26px; }
.wave span {
  flex: 1;
  background: color-mix(in oklch, var(--accent) 78%, transparent);
  border-radius: 2px;
  animation: pulse 1.1s ease-in-out infinite;
  transform-origin: center;
}
.wave span:nth-child(odd) { animation-delay: 0.35s; }
@keyframes pulse { 0%, 100% { transform: scaleY(0.45); } 50% { transform: scaleY(1); } }

.phone-progress { margin-top: 10px; }
.phone-progress .bar { height: 6px; border-radius: 3px; background: color-mix(in oklch, var(--fg) 10%, transparent); position: relative; }
.phone-progress .bar::after {
  content: ''; position: absolute; inset: 0 auto 0 0; width: 38%;
  background: var(--accent); border-radius: 3px;
}
.phone-progress .bar::before {
  content: ''; position: absolute; top: 50%; left: 38%; z-index: 1;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--surface); transform: translate(-50%, -50%);
  box-shadow: 0 1px 4px rgba(27, 26, 23, 0.3);
}
.phone-time { display: flex; justify-content: space-between; margin-top: 6px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

.phone-controls { display: flex; align-items: center; justify-content: center; gap: 26px; margin-top: 12px; }
.phone-controls button {
  background: none; border: 0; color: var(--fg); padding: 6px;
  display: grid; place-items: center;
}
.phone-controls button:focus-visible { outline: 2px solid var(--accent); border-radius: 8px; }
.phone-play {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--accent); color: var(--surface);
  display: grid; place-items: center;
  box-shadow: 0 10px 20px -10px color-mix(in oklch, var(--accent) 80%, black);
}
.phone-caption { font-size: 13px; color: var(--muted); }

.mini-player {
  margin-top: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 7px 10px 10px;
  position: relative;
}
.mini-player .mp-row { display: flex; align-items: center; gap: 10px; }
.mini-thumb { width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0; }
.mini-info { flex: 1; min-width: 0; }
.mini-title { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-sub { font-size: 10.5px; color: var(--muted); }
.mini-btn { background: none; border: 0; color: var(--fg); display: grid; place-items: center; padding: 4px; flex-shrink: 0; }
.mini-btn:focus-visible { outline: 2px solid var(--accent); border-radius: 8px; }
.mini-track { position: absolute; left: 10px; right: 10px; bottom: 4px; height: 2px; border-radius: 1px; background: var(--border); }
.mini-track::after { content: ''; position: absolute; inset: 0 auto 0 0; width: 45%; background: var(--accent); border-radius: 1px; }

.phone-nav { margin-top: auto; height: 54px; display: flex; padding-bottom: 2px; }
.phone-nav .tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-size: 10px; color: var(--muted);
}
.phone-nav .tab-ico { display: grid; place-items: center; height: 26px; padding-inline: 12px; border-radius: 999px; }
.phone-nav .tab svg { width: 20px; height: 20px; }
.phone-nav .tab.active { color: var(--accent); }
.phone-nav .tab.active .tab-ico { background: color-mix(in oklch, var(--accent) 14%, transparent); }

/* ---------- 区块组件 ---------- */
.trust-bar { display: flex; justify-content: center; gap: var(--gap-md); flex-wrap: wrap; }

.step .step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: var(--gap-sm);
}
.step h3 { margin-bottom: 8px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.step { border-top: 2px solid var(--line-soft); padding-top: 18px; border-radius: 2px; }

.platform-link {
  display: flex; align-items: center; justify-content: space-between; gap: var(--gap-sm);
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 15px;
  font-weight: 500;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  min-height: 44px;
}
.platform-link:hover {
  border-color: color-mix(in oklch, var(--accent) 35%, var(--border));
  transform: translateY(-2px);
  box-shadow: var(--shadow-warm);
}
.platform-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.platform-link .arrow { color: var(--muted); transition: transform 0.15s ease, color 0.15s ease; }
.platform-link:hover .arrow { transform: translateX(3px); color: var(--accent); }

/* 应用场景卡片 */
.scenario-card {
  display: flex; flex-direction: column; gap: 10px;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.scenario-card:hover {
  border-color: color-mix(in oklch, var(--accent) 35%, var(--border));
  transform: translateY(-2px);
  box-shadow: var(--shadow-warm);
}
.scenario-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.scenario-card .feature-mark { margin-bottom: 2px; }
.scenario-card .scenario-cta { margin-top: auto; font-size: 14px; font-weight: 500; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.scenario-card .scenario-cta::after { content: '→'; transition: transform 0.15s ease; }
.scenario-card:hover .scenario-cta::after { transform: translateX(3px); }

/* 图文交替区块（功能页） */
.split-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-2xl); align-items: center; }
.split-row + .split-row { margin-top: clamp(56px, 8vw, 96px); }
.split-row .split-visual { display: grid; place-items: center; }
@media (max-width: 920px) {
  .split-row { grid-template-columns: 1fr; gap: var(--gap-lg); }
  .split-row .split-visual { order: -1; }
}

/* 列表条目（相关阅读/日志式） */
.log-row {
  display: grid; grid-template-columns: 110px 1fr auto; gap: var(--gap-md); align-items: baseline;
  padding: 22px 4px; border-top: 1px solid var(--border);
}
.log-row h3 { font-size: 17px; }
.log-row p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.log-row a { border-radius: 6px; }
.log-row a:hover h3 { color: var(--accent); }
@media (max-width: 920px) { .log-row { grid-template-columns: 1fr; gap: 4px; } }

/* 表格 */
.ds-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.ds-table th, .ds-table td { padding: 14px 12px; border-bottom: 1px solid var(--border); text-align: left; }
.ds-table th { font-size: 13px; color: var(--muted); font-weight: 500; }
.ds-table .num-col { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* FAQ */
details.faq-item { border-top: 1px solid var(--border); }
details.faq-item summary {
  list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: var(--gap-md);
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  min-height: 44px;
  border-radius: 8px;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: '+'; font-family: var(--font-mono); color: var(--muted); font-size: 18px; }
details.faq-item[open] summary::after { content: '−'; color: var(--accent); }
details.faq-item summary:hover { color: var(--accent); }
details.faq-item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
details.faq-item .faq-body { padding: 0 4px 22px; color: var(--muted); max-width: 62ch; }
details.faq-item .faq-body p + p { margin-top: 10px; }
details.faq-item .faq-body ul { margin: 8px 0 0; padding-left: 20px; }

/* ---------- 文章页（平台页/场景页/法务页） ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: var(--gap-lg); }
.breadcrumb a { color: var(--muted); border-radius: 4px; }
.breadcrumb a:hover { color: var(--fg); }
.breadcrumb a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.breadcrumb .sep { margin-inline: 8px; color: var(--border); }

.prose { max-width: var(--prose); }
.prose > * + * { margin-top: var(--gap-md); }
.prose h2 { font-family: var(--font-display); font-size: clamp(22px, 2.6vw, 28px); margin-top: var(--gap-xl); }
.prose h3 { font-size: 18px; margin-top: var(--gap-lg); }
.prose p, .prose li { line-height: 1.9; }
.prose ul, .prose ol { margin: 0; padding-left: 22px; }
.prose li + li { margin-top: 6px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; border-radius: 4px; }
.prose a:hover { text-decoration-thickness: 2px; }
.prose a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: var(--gap-lg) 0; padding: 4px 0 4px var(--gap-md);
  border-left: 3px solid var(--line-soft); color: var(--muted);
  background: linear-gradient(to right, var(--accent-soft), transparent 70%);
  border-radius: 0 12px 12px 0;
}
.article-hero { padding-block: clamp(40px, 6vw, 72px) clamp(32px, 5vw, 56px); }
.article-hero h1 { font-size: clamp(30px, 4.4vw, 48px); margin-bottom: var(--gap-md); }
.article-hero .lead { max-width: 40em; }

/* 法务页目录 */
.legal-toc { position: sticky; top: 84px; }
.legal-toc a { display: block; padding: 7px 0; font-size: 14px; color: var(--muted); border-left: 2px solid var(--border); padding-left: 14px; border-radius: 2px; }
.legal-toc a:hover { color: var(--fg); border-left-color: var(--accent); }

/* 表单 */
.field label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.input, .textarea {
  width: 100%; padding: 12px 16px; font: inherit; font-size: 15px;
  background: var(--surface); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  min-height: 44px;
}
.input:focus-visible, .textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-color: var(--accent); }
.textarea { min-height: 110px; resize: vertical; }

/* 二维码占位框 */
.qr-box {
  width: 176px; height: 176px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  display: grid; place-items: center; text-align: center;
  color: var(--muted); font-size: 12px; padding: 12px; line-height: 1.5;
}

/* 移动端常驻下载条 */
.dl-bar {
  position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 20;
  display: none;
  align-items: center; justify-content: space-between; gap: var(--gap-sm);
  background: var(--fg);
  color: var(--surface);
  border-radius: 20px;
  padding: 10px 10px 10px 18px;
  box-shadow: 0 14px 34px -14px rgba(42, 37, 30, 0.55);
  transform: translateY(120%);
  transition: transform 0.25s ease;
}
.dl-bar.show { transform: none; }
.dl-bar .dl-bar-text { font-size: 14px; line-height: 1.4; }
.dl-bar .dl-bar-text small { display: block; font-size: 12px; color: color-mix(in oklch, var(--surface) 62%, transparent); }
.dl-bar .btn { padding: 10px 18px; min-height: 44px; }
@media (max-width: 920px) { .dl-bar { display: flex; } }

/* ---------- 小屏微调（≤560px） ---------- */
@media (max-width: 560px) {
  .container { padding-inline: 20px; }
  .card { padding: 22px; }
  .hero-cta { width: 100%; }
  .hero-cta .btn { flex: 1 1 auto; }
  .log-row { padding: 18px 0; }
  .platform-link { padding: 16px 18px; }
  .article-hero h1 { font-size: clamp(26px, 7.4vw, 32px); }
}