/* 瓶瓶 PingPing 官网 · 共用设计系统
   只用系统字体;不引用任何外部资源。浅色 / 深色跟随系统;尊重“减少动态效果”。 */

:root {
  --blue: #2F6FD6;
  --blue-ink: #2F6FD6;          /* 文字用的蓝(深色模式下换成浅蓝) */
  --blue-deep: #1F55B0;
  --sky: #7DBCFB;
  --pink: #FFB6C8;
  --bg: #F4F8FE;
  --bg-2: #EAF2FD;
  --ink: #1B2433;
  --ink-2: #47536A;
  --ink-3: #5E6A80;
  --surface: #FFFFFF;
  --surface-2: #F7FAFF;
  --tint: #E6F0FD;
  --tint-pink: #FFEFF3;
  --line: rgba(27, 36, 51, .08);
  --line-strong: rgba(27, 36, 51, .14);
  --glass: rgba(255, 255, 255, .66);
  --glass-line: rgba(255, 255, 255, .9);
  --shadow-sm: 0 1px 2px rgba(27, 36, 51, .05), 0 4px 14px rgba(47, 111, 214, .06);
  --shadow: 0 1px 2px rgba(27, 36, 51, .04), 0 14px 40px rgba(47, 111, 214, .10);
  --shadow-lg: 0 2px 6px rgba(27, 36, 51, .05), 0 30px 80px rgba(47, 111, 214, .16);
  --btn-bg: #2F6FD6;
  --btn-ink: #FFFFFF;
  --focus: #2F6FD6;
  --r-sm: 12px;
  --r: 20px;
  --r-lg: 28px;
  --wrap: 1120px;
  --gutter: 20px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue: #4C8BEE;
    --blue-ink: #8EC3FC;
    --blue-deep: #B7D7FD;
    --sky: #7DBCFB;
    --pink: #FFB6C8;
    --bg: #0B111C;
    --bg-2: #0F1828;
    --ink: #EAF0F8;
    --ink-2: #B6C1D3;
    --ink-3: #96A3B8;
    --surface: #131C2C;
    --surface-2: #172234;
    --tint: #18273F;
    --tint-pink: #2A1C26;
    --line: rgba(255, 255, 255, .08);
    --line-strong: rgba(255, 255, 255, .14);
    --glass: rgba(19, 28, 44, .66);
    --glass-line: rgba(255, 255, 255, .09);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 44px rgba(0, 0, 0, .35);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, .3), 0 30px 80px rgba(0, 0, 0, .45);
    --btn-bg: #3B7BE3;
    --btn-ink: #FFFFFF;
    --focus: #8EC3FC;
  }
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.7 var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  overflow-wrap: break-word;
}
@supports (overflow: clip) { body { overflow-x: clip; } }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-ink); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
b, strong { font-weight: 650; }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--ink); margin: 0; letter-spacing: -.012em; }
:lang(en) h1, :lang(en) h2, :lang(en) h3 { letter-spacing: -.022em; }
p { margin: 0 0 1em; }
::selection { background: rgba(125, 188, 251, .4); }

:focus { outline: none; }
:focus-visible {
  outline: 2.5px solid var(--focus);
  outline-offset: 3px;
  border-radius: 8px;
}

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--btn-bg); color: var(--btn-ink);
  padding: 10px 16px; border-radius: 12px; text-decoration: none; font-weight: 600;
  transition: top .2s var(--ease);
}
.skip:focus-visible { top: 12px; }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.wrap-narrow { max-width: 800px; }
@media (max-width: 420px) { :root { --gutter: 16px; } }

/* 背景氛围:几团很淡的光 */
.aura { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.aura i {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55;
}
.aura i:nth-child(1) { width: 520px; height: 520px; left: -160px; top: -180px; background: radial-gradient(circle, rgba(125, 188, 251, .55), transparent 70%); }
.aura i:nth-child(2) { width: 460px; height: 460px; right: -160px; top: 120px; background: radial-gradient(circle, rgba(255, 182, 200, .45), transparent 70%); }
.aura i:nth-child(3) { width: 600px; height: 600px; left: 30%; top: 70vh; background: radial-gradient(circle, rgba(125, 188, 251, .30), transparent 70%); }
@media (prefers-color-scheme: dark) {
  .aura i { opacity: .28; }
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  padding-top: env(safe-area-inset-top);
  transition: background-color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled, .site-header.solid {
  background: var(--glass);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}
.site-header .bar {
  display: flex; align-items: center; gap: 12px;
  height: 64px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none; font-weight: 700; font-size: 17px;
  flex-shrink: 0; border-radius: 12px;
}
.brand img { width: 34px; height: 34px; border-radius: 9px; box-shadow: var(--shadow-sm); }
.brand small { font-weight: 500; color: var(--ink-3); font-size: 13px; margin-left: 2px; }
.site-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; position: relative; }
.site-nav a {
  position: relative; z-index: 1;
  color: var(--ink-2); text-decoration: none; font-size: 15px; font-weight: 500;
  padding: 7px 12px; border-radius: 999px;
  transition: color .2s, background-color .2s;
}
.site-nav a:hover { color: var(--ink); background: var(--tint); }
.site-nav a.active, .site-nav a[aria-current="page"] { color: var(--blue-ink); }
.site-nav a[aria-current="page"] { background: var(--tint); }
.site-nav .ind {
  position: absolute; left: 0; top: 50%; height: 34px; margin-top: -17px; width: 0;
  border-radius: 999px; background: var(--tint); opacity: 0; z-index: 0;
  transition: transform .45s var(--ease), width .45s var(--ease), opacity .3s;
}
.header-tools { display: flex; align-items: center; gap: 8px; margin-left: 8px; }
.site-nav + .header-tools { margin-left: 8px; }
.header-tools:first-child { margin-left: auto; }

.lang-menu { position: relative; font-size: 13px; font-weight: 600; }
.lang-menu summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 12px; color: var(--ink-2); box-shadow: var(--shadow-sm); line-height: 1.4;
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { color: var(--ink); }
.lang-list {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 50; min-width: 180px;
  display: flex; flex-direction: column; padding: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-sm);
  max-height: 70vh; overflow-y: auto;
}
.lang-list a, .lang-list span { padding: 7px 10px; border-radius: 10px; text-decoration: none; color: var(--ink-2); white-space: nowrap; }
.lang-list a:hover { color: var(--ink); background: var(--tint); }
.lang-list [aria-current="true"] { background: var(--btn-bg); color: var(--btn-ink); }
@media (max-width: 420px) { .lang-menu summary span { display: none; } }

@media (max-width: 860px) {
  .site-nav.collapsible { display: none; }
  .header-tools { margin-left: auto !important; }
}
@media (max-width: 380px) {
  .brand small { display: none; }
  .header-tools .btn-sm { padding: 0 12px; }
}

/* ---------- 按钮 ---------- */
.btn {
  -webkit-appearance: none; appearance: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 24px; border-radius: 999px;
  font: 600 16px/1 var(--font); text-decoration: none; cursor: pointer; border: 0;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background-color .2s, color .2s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(.97); }
.btn-primary {
  background: var(--btn-bg); color: var(--btn-ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .25) inset, 0 8px 22px rgba(47, 111, 214, .32);
}
.btn-primary:hover { background: var(--blue-deep); box-shadow: 0 1px 0 rgba(255, 255, 255, .25) inset, 0 12px 30px rgba(47, 111, 214, .40); }
@media (prefers-color-scheme: dark) { .btn-primary:hover { background: #4C8BEE; } }
.btn-glass {
  background: var(--glass); color: var(--ink);
  border: 1px solid var(--glass-line);
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.btn-glass:hover { background: var(--surface); }
.btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; }
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* 主按钮扫光 */
.sheen { position: relative; overflow: hidden; isolation: isolate; }
.sheen::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, .35) 50%, transparent 70%);
  transform: translateX(-120%);
}
@media (prefers-reduced-motion: no-preference) {
  .sheen::after { animation: sheen 5.5s var(--ease) 1.6s infinite; }
}
@keyframes sheen { 0%, 70% { transform: translateX(-120%); } 100% { transform: translateX(120%); } }

/* ---------- 卡片 / 玻璃 ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-line);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  backdrop-filter: saturate(160%) blur(20px);
  box-shadow: var(--shadow);
}

.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase;
  color: var(--blue-ink);
}
.kicker::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--blue), var(--sky)); }
.tag {
  display: inline-block; font-size: 12.5px; font-weight: 600; line-height: 1;
  color: var(--blue-ink); background: var(--tint);
  padding: 6px 10px; border-radius: 999px;
}
.tag.pink { color: #B33A5E; background: var(--tint-pink); }
@media (prefers-color-scheme: dark) { .tag.pink { color: #FFB6C8; } }
.muted { color: var(--ink-3); }

/* ---------- 文档页(隐私政策 / 用户协议 / 使用指南) ---------- */
.doc-hero { padding: 40px 0 28px; position: relative; }
.doc-hero .crumbs { font-size: 14px; color: var(--ink-3); margin-bottom: 14px; }
.doc-hero .crumbs a { color: var(--ink-3); text-decoration: none; }
.doc-hero .crumbs a:hover { color: var(--blue-ink); }
.doc-hero h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.15; font-weight: 800; }
.doc-hero .lede { font-size: 17px; color: var(--ink-2); margin: 14px 0 0; max-width: 46em; }
.doc-hero .mascot {
  position: absolute; right: 0; bottom: 6px; width: 104px; height: auto;
  filter: drop-shadow(0 14px 24px rgba(47, 111, 214, .22));
}
@media (max-width: 640px) { .doc-hero .mascot { width: 72px; bottom: auto; top: 26px; } .doc-hero h1 { padding-right: 76px; } }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.meta-row .pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px; color: var(--ink-2);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 12px;
}
.meta-row .pill b { color: var(--ink); font-weight: 600; }

.doc-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 32px; align-items: start; padding-bottom: 64px; }
.doc-toc { position: sticky; top: 88px; font-size: 14px; }
.doc-toc p { font-weight: 650; color: var(--ink); margin: 0 0 8px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; }
.doc-toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-strong); }
.doc-toc a {
  display: block; padding: 6px 12px; margin-left: -1px; border-left: 2px solid transparent;
  color: var(--ink-2); text-decoration: none; line-height: 1.45;
}
.doc-toc a:hover { color: var(--ink); }
.doc-toc a.active { color: var(--blue-ink); border-left-color: var(--blue); font-weight: 600; }
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .doc-toc { display: none; }
}

.doc {
  padding: clamp(22px, 4vw, 44px);
  font-size: 16px; line-height: 1.8;
}
.doc > p:first-child { margin-top: 0; }
.doc .intro { font-size: 17px; color: var(--ink); }
.doc section { padding-top: 8px; }
.doc section + section { margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--line); }
.doc h2 {
  font-size: clamp(19px, 2.6vw, 22px); line-height: 1.4; font-weight: 700; margin: 0 0 12px;
  display: flex; align-items: baseline; gap: 10px;
}
.doc h2 .no {
  flex-shrink: 0; font-size: 13px; font-weight: 700; color: var(--blue-ink);
  background: var(--tint); border-radius: 8px; padding: 3px 8px; line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
.doc ul { padding-left: 0; list-style: none; margin: 0; }
.doc ul > li { position: relative; padding-left: 20px; margin: 0 0 12px; color: var(--ink); }
.doc ul > li::before {
  content: ""; position: absolute; left: 3px; top: .72em; width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, var(--sky), var(--blue));
}
.doc b { color: var(--ink); background: linear-gradient(transparent 62%, rgba(125, 188, 251, .2) 62%); }
@media (prefers-color-scheme: dark) { .doc b { background: linear-gradient(transparent 62%, rgba(125, 188, 251, .2) 62%); } }
.doc p:last-child { margin-bottom: 0; }

.notice {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--tint); border: 1px solid var(--line);
  border-radius: var(--r); padding: 14px 16px; font-size: 15px; color: var(--ink-2); margin: 0 0 24px;
}
.notice .ico { flex-shrink: 0; width: 22px; height: 22px; color: var(--blue-ink); margin-top: 2px; }

/* 法律文本里的表格:手机上变成一张张小卡片 */
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 15px; line-height: 1.65; margin: 4px 0 16px; }
.data-table th, .data-table td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.data-table thead th { font-size: 13px; font-weight: 650; color: var(--ink-3); background: var(--surface-2); border-bottom: 1px solid var(--line-strong); }
.data-table thead th:first-child { border-top-left-radius: 14px; }
.data-table thead th:last-child { border-top-right-radius: 14px; }
.data-table td:first-child { font-weight: 600; width: 24%; }
.data-table td:nth-child(2) { width: 30%; color: var(--ink-2); }
.data-table tbody tr:hover td { background: var(--surface-2); }
@media (max-width: 680px) {
  .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: auto !important; }
  .data-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .data-table tr {
    background: var(--surface-2); border: 1px solid var(--line); border-radius: 16px;
    padding: 6px 14px; margin-bottom: 12px;
  }
  .data-table td { border: 0; padding: 8px 0; }
  .data-table td + td { border-top: 1px dashed var(--line-strong); }
  .data-table td::before {
    content: attr(data-label); display: block;
    font-size: 12px; font-weight: 650; color: var(--ink-3); letter-spacing: .04em; margin-bottom: 2px;
  }
  .data-table tbody tr:hover td { background: transparent; }
}

.contact-card {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-top: 24px; padding: 18px 20px; border-radius: var(--r);
  background: linear-gradient(135deg, var(--tint), var(--tint-pink));
  border: 1px solid var(--line);
}
.contact-card img { width: 56px; height: auto; }
.contact-card div { flex: 1 1 200px; font-size: 15px; color: var(--ink-2); }
.contact-card div b { display: block; color: var(--ink); font-size: 16px; background: none; }

/* ---------- 使用指南 ---------- */
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin: 0 0 32px; padding: 0; list-style: none; }
.topics a {
  display: flex; align-items: center; gap: 12px; height: 100%;
  padding: 12px 14px; border-radius: 16px; text-decoration: none;
  background: var(--surface); border: 1px solid var(--line); color: var(--ink);
  font-weight: 600; font-size: 15px; line-height: 1.35;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
}
.topics a:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: transparent; }
.topics .n {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 10px; display: grid; place-items: center;
  font-size: 13px; font-weight: 700; color: var(--blue-ink); background: var(--tint);
  font-variant-numeric: tabular-nums;
}
@media (max-width: 480px) { .topics { grid-template-columns: 1fr 1fr; gap: 8px; } .topics a { font-size: 14px; padding: 10px 10px; gap: 8px; } .topics .n { width: 26px; height: 26px; font-size: 12px; } }

.guide-list { display: grid; gap: 16px; }
.topic { padding: clamp(20px, 3.5vw, 32px); scroll-margin-top: 84px; }
.topic header { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 14px; }
.topic header .n {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: 13px; display: grid; place-items: center;
  font-weight: 750; font-size: 16px; color: #fff;
  background: linear-gradient(140deg, var(--sky), var(--blue));
  box-shadow: 0 6px 16px rgba(47, 111, 214, .28);
}
.topic h2 { font-size: clamp(19px, 2.6vw, 22px); line-height: 1.35; font-weight: 700; }
.topic .sum { margin: 4px 0 0; color: var(--ink-2); font-size: 15.5px; }
.steps-list { counter-reset: s; list-style: none; padding: 0; margin: 0; }
.steps-list li { counter-increment: s; position: relative; padding: 8px 0 8px 40px; line-height: 1.7; }
.steps-list li + li { border-top: 1px dashed var(--line); }
.steps-list li::before {
  content: counter(s); position: absolute; left: 4px; top: 10px;
  width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center;
  font-size: 12.5px; font-weight: 700; color: var(--blue-ink);
  background: var(--tint); border: 1px solid var(--line);
}
.tip {
  margin: 14px 0 0; padding: 12px 14px 12px 44px; position: relative;
  background: var(--tint-pink); border-radius: 14px; font-size: 15px; color: var(--ink-2);
}
.tip::before {
  content: ""; position: absolute; left: 14px; top: 14px; width: 18px; height: 18px;
  background: no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E06A8C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 22h4M12 2a7 7 0 0 0-4 12.7c.6.5 1 1.3 1 2.1V17h6v-.2c0-.8.4-1.6 1-2.1A7 7 0 0 0 12 2z'/%3E%3C/svg%3E");
}
.tip b { color: var(--ink); background: none; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 calc(32px + env(safe-area-inset-bottom));
  font-size: 14px; color: var(--ink-3);
  background: linear-gradient(to bottom, transparent, var(--bg-2));
}
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 24px 40px; align-items: flex-start; justify-content: space-between; }
.site-footer .who { display: flex; gap: 12px; align-items: center; max-width: 420px; }
.site-footer .who img { width: 40px; height: 40px; border-radius: 11px; }
.site-footer .who b { color: var(--ink); display: block; font-size: 15px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-footer a { color: var(--ink-2); text-decoration: none; }
.site-footer a:hover { color: var(--blue-ink); text-decoration: underline; }
.site-footer .legal { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between; }
.site-footer .legal a { color: var(--ink-3); }

/* ---------- 进入视野时的出现动画 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
  .js .reveal.in { opacity: 1; transform: none; }
  .js .stagger > * { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: calc(var(--i, 0) * 70ms); }
  .js .stagger.in > * { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

@media print {
  .site-header, .aura, .site-footer nav, .doc-toc, .lang-menu { display: none !important; }
  body { background: #fff; color: #000; }
  .card { box-shadow: none; border: 0; }
}