:root {
  --primary: #c62828;
  --primary-dark: #8e1c1c;
  --primary-light: #ef5350;
  --accent: #ff7043;
  --accent-2: #ffab40;
  --gradient-banner: linear-gradient(135deg, #8e1c1c 0%, #c62828 40%, #e53935 70%, #ff7043 100%);
  --gradient-card: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(255, 245, 245, 0.75));
  --bg: #fff8f6;
  --bg-soft: #fdeeee;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.62);
  --surface-glass-strong: rgba(255, 255, 255, 0.82);
  --border: #f0d6d6;
  --border-soft: rgba(198, 40, 40, 0.12);
  --text: #2b1a1a;
  --text-soft: #6b4b4b;
  --text-muted: #967373;
  --shadow-sm: 0 2px 8px rgba(140, 30, 30, 0.06);
  --shadow-md: 0 8px 28px rgba(140, 30, 30, 0.1);
  --shadow-lg: 0 18px 48px rgba(140, 30, 30, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --blur: 14px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-h: 64px;
  --maxw: 1200px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #ff5a5a;
    --primary-dark: #c62828;
    --primary-light: #ff8a80;
    --accent: #ff8a65;
    --accent-2: #ffb74d;
    --gradient-banner: linear-gradient(135deg, #2a0d0d 0%, #5a1414 35%, #8e1c1c 68%, #b23b1e 100%);
    --gradient-card: linear-gradient(160deg, rgba(48, 26, 26, 0.92), rgba(34, 20, 20, 0.8));
    --bg: #140d0d;
    --bg-soft: #1d1212;
    --surface: #221616;
    --surface-glass: rgba(40, 24, 24, 0.6);
    --surface-glass-strong: rgba(44, 26, 26, 0.86);
    --border: #3a2323;
    --border-soft: rgba(255, 120, 120, 0.16);
    --text: #f4e8e8;
    --text-soft: #cdb2b2;
    --text-muted: #a18484;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.62);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(1100px 520px at 8% -8%, rgba(198, 40, 40, 0.1), transparent 62%),
    radial-gradient(900px 480px at 100% 0%, rgba(255, 112, 67, 0.1), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

a:hover,
a:focus-visible {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4 {
  line-height: 1.35;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(1.6rem, 1.1rem + 2.2vw, 2.6rem);
  margin: 0 0 0.6em;
}

h2 {
  font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.85rem);
  margin: 0 0 0.7em;
  position: relative;
  padding-left: 16px;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: var(--radius-pill);
  background: var(--gradient-banner);
}

h3 {
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.25rem);
  margin: 1.6em 0 0.5em;
}

p {
  margin: 0 0 1em;
  color: var(--text-soft);
}

strong {
  color: var(--primary);
  font-weight: 700;
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
  color: var(--text-soft);
}

li {
  margin-bottom: 0.4em;
}

blockquote {
  margin: 0 0 1.2em;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

blockquote:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

blockquote p {
  color: var(--text);
  margin-bottom: 0.6em;
}

blockquote footer {
  font-size: 0.9rem;
  color: var(--text-muted);
}

time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  padding: 2px 12px;
  margin-bottom: 0.4em;
}

figure {
  margin: 1.6em 0;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

figure svg {
  border-radius: var(--radius-md);
  width: 100%;
  height: auto;
}

figcaption {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--text-muted);
  text-align: center;
}

/* ============ Header ============ */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-glass-strong);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: 0 4px 24px rgba(140, 30, 30, 0.08);
}

header > div {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

header > div > a {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--gradient-banner);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), filter 0.3s var(--ease);
}

header > div > a:hover {
  transform: scale(1.04);
  filter: brightness(1.15);
}

header nav {
  flex: 1 1 auto;
  min-width: 0;
}

header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

header nav li {
  margin: 0;
}

header nav a {
  display: inline-block;
  padding: 6px 11px;
  font-size: 0.92rem;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

header nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--gradient-banner);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease);
}

header nav a:hover,
header nav a:focus-visible {
  color: var(--primary);
  background: var(--bg-soft);
  transform: translateY(-1px);
}

header nav a:hover::after {
  width: 60%;
}

header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 300px;
  margin-left: auto;
  position: relative;
}

header form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

header form[role="search"] input[type="search"] {
  flex: 1 1 auto;
  min-width: 0;
  padding: 9px 16px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

header form[role="search"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

header form[role="search"] input[type="search"]:focus {
  border-color: var(--primary);
  background: var(--surface);
  box-shadow: 0 0 0 4px rgba(198, 40, 40, 0.14);
  outline: none;
}

header form[role="search"] button {
  flex: 0 0 auto;
  padding: 9px 20px;
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-banner);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(198, 40, 40, 0.32);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}

header form[role="search"] button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(198, 40, 40, 0.42);
  filter: brightness(1.06);
}

header form[role="search"] button:active {
  transform: translateY(0);
}

/* ============ Main ============ */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 20px 40px;
}

main > nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 20px;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
}

main > nav[aria-label="面包屑导航"] li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

main > nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--text-muted);
}

main > nav[aria-label="面包屑导航"] li[aria-current] {
  color: var(--primary);
  font-weight: 600;
}

/* ============ Sections ============ */
section {
  margin-bottom: 36px;
  padding: clamp(20px, 3vw, 40px);
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.4s var(--ease), transform 0.4s var(--ease);
}

section:hover {
  box-shadow: var(--shadow-md);
}

/* Hero */
#hero {
  position: relative;
  overflow: hidden;
  background: var(--gradient-banner);
  border: none;
  color: #fff;
  box-shadow: var(--shadow-lg);
  padding: clamp(28px, 4vw, 56px);
}

#hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.22), transparent 62%);
  pointer-events: none;
  animation: heroFloat 14s ease-in-out infinite alternate;
}

#hero::after {
  content: "";
  position: absolute;
  inset: auto auto -50% -12%;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255, 171, 64, 0.28), transparent 64%);
  pointer-events: none;
  animation: heroFloat 18s ease-in-out infinite alternate-reverse;
}

@keyframes heroFloat {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-40px, 30px, 0) scale(1.12); }
}

#hero h1 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.22);
  position: relative;
  z-index: 1;
}

#hero p {
  color: rgba(255, 255, 255, 0.92);
  position: relative;
  z-index: 1;
  max-width: 78ch;
}

#hero > div {
  position: relative;
  z-index: 1;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  margin: 10px 12px 10px 0;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.16);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

#hero > div:hover {
  transform: translateY(-6px) scale(1.02);
  background: rgba(255, 255, 255, 0.22);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.24);
}

#hero > div p {
  margin: 0;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.86);
  text-align: center;
}

#hero > div p strong {
  display: block;
  font-size: 1.9rem;
  line-height: 1.2;
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.24);
}

#hero figure {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.24);
  margin-top: 24px;
}

#hero figcaption {
  color: rgba(255, 255, 255, 0.86);
}

/* Page anchor nav */
main > nav[aria-label="页面锚点导航"] {
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 36px;
}

main > nav[aria-label="页面锚点导航"] h2 {
  font-size: 1.05rem;
  margin-bottom: 0.9em;
}

main > nav[aria-label="页面锚点导航"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

main > nav[aria-label="页面锚点导航"] li {
  margin: 0;
}

main > nav[aria-label="页面锚点导航"] a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.88rem;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s var(--ease), color 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease), background 0.28s var(--ease);
}

main > nav[aria-label="页面锚点导航"] a:hover {
  transform: translateY(-3px);
  color: #fff;
  background: var(--gradient-banner);
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(198, 40, 40, 0.34);
}

/* Articles */
article {
  padding: 20px 22px;
  margin-bottom: 18px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-soft);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border);
}

article:last-child {
  margin-bottom: 0;
}

article h3 {
  margin-top: 0;
}

article h3 a {
  color: var(--text);
  background-image: linear-gradient(var(--primary), var(--primary));
  background-size: 0% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.35s var(--ease), color 0.3s var(--ease);
}

article h3 a:hover {
  color: var(--primary);
  background-size: 100% 2px;
}

article p a {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

article p a:hover {
  transform: translateX(4px);
  color: #fff;
  background: var(--gradient-banner);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(198, 40, 40, 0.3);
}

/* Howto ordered list */
#howto ol {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  position: relative;
  padding: 12px 16px 12px 54px;
  margin-bottom: 10px;
  border-radius: var(--radius-sm);
  background: var(--surface-glass);
  border: 1px solid var(--border-soft);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#howto ol li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-banner);
  border-radius: 50%;
  box-shadow: 0 3px 10px rgba(198, 40, 40, 0.34);
}

#howto ol li:hover {
  transform: translateX(6px);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

/* FAQ */
#faq h3 {
  position: relative;
  padding: 14px 18px 14px 46px;
  margin: 0 0 8px;
  border-radius: var(--radius-sm);
  background: var(--surface-glass);
  border: 1px solid var(--border-soft);
  cursor: default;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#faq h3::before {
  content: "Q";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: #fff;
  background: var(--gradient-banner);
  border-radius: 50%;
}

#faq h3:hover {
  transform: translateY(-2px);
  color: var(--primary);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

#faq h3 + p {
  padding-left: 18px;
  border-left: 3px solid var(--border);
  margin-left: 8px;
}

/* Contact */
#contact address {
  font-style: normal;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

#contact address p {
  margin: 0 0 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

#contact address p:last-child {
  margin-bottom: 0;
}

/* Sitemap / links */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.88rem;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: transform 0.28s var(--ease), color 0.28s var(--ease), background 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

#sitemap a:hover,
#links a:hover {
  transform: translateY(-3px);
  color: #fff;
  background: var(--gradient-banner);
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(198, 40, 40, 0.3);
}

/* ============ Footer ============ */
footer {
  margin-top: 20px;
  padding: clamp(28px, 4vw, 52px) 20px 28px;
  background:
    radial-gradient(800px 320px at 12% 0%, rgba(198, 40, 40, 0.16), transparent 62%),
    radial-gradient(700px 300px at 92% 8%, rgba(255, 112, 67, 0.14), transparent 60%),
    var(--bg-soft);
  border-top: 1px solid var(--border-soft);
}

footer > section,
footer > nav {
  max-width: var(--maxw);
  margin: 0 auto 22px;
  padding: 18px 22px;
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}

footer > section:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

footer h2 {
  font-size: 1.02rem;
  margin: 0 0 0.6em;
  padding-left: 12px;
}

footer h2::before {
  width: 4px;
}

footer p {
  font-size: 0.9rem;
  margin: 0 0 0.5em;
}

footer p:last-child {
  margin-bottom: 0;
}

footer > nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

footer > nav li {
  margin: 0;
}

footer > nav a {
  font-size: 0.88rem;
  color: var(--text-soft);
  position: relative;
  transition: color 0.25s var(--ease);
}

footer > nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--gradient-banner);
  transition: width 0.3s var(--ease);
}

footer > nav a:hover {
  color: var(--primary);
}

footer > nav a:hover::after {
  width: 100%;
}

/* ============ Scroll Animation ============ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translate3d(0, 26px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@supports (animation-timeline: view()) {
  section,
  article,
  blockquote,
  figure {
    animation: fadeUp linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 26%;
  }
}

@media (prefers-reduced-motion: no-preference) {
  @supports not (animation-timeline: view()) {
    main > section {
      animation: fadeUp 0.7s var(--ease) both;
    }
    main > section:nth-child(2) { animation-delay: 0.05s; }
    main > section:nth-child(3) { animation-delay: 0.1s; }
    main > section:nth-child(4) { animation-delay: 0.15s; }
    main > section:nth-child(5) { animation-delay: 0.2s; }
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  header > div {
    gap: 12px;
  }

  header form[role="search"] {
    flex: 1 1 100%;
    margin-left: 0;
    order: 3;
  }

  header nav {
    order: 2;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  body {
    font-size: 15px;
    line-height: 1.75;
  }

  header > div {
    padding: 8px 14px;
    gap: 8px;
  }

  header > div > a {
    font-size: 1.12rem;
  }

  header nav ul {
    gap: 2px;
  }

  header nav a {
    padding: 5px 8px;
    font-size: 0.84rem;
  }

  main {
    padding: 14px 12px 28px;
  }

  section {
    padding: 18px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
  }

  #hero {
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

  #hero > div {
    min-width: 130px;
    padding: 12px 16px;
    margin: 8px 8px 8px 0;
  }

  #hero > div p strong {
    font-size: 1.5rem;
  }

  figure {
    padding: 10px;
    border-radius: var(--radius-md);
  }

  blockquote {
    padding: 16px 18px;
  }

  article {
    padding: 16px 16px;
  }

  main > nav[aria-label="页面锚点导航"] {
    padding: 16px;
    margin-bottom: 24px;
  }

  main > nav[aria-label="页面锚点导航"] a {
    padding: 6px 12px;
    font-size: 0.82rem;
  }

  main > nav[aria-label="面包屑导航"] ol {
    font-size: 0.78rem;
    padding: 6px 12px;
  }

  #howto ol li {
    padding: 12px 14px 12px 48px;
  }

  #faq h3 {
    padding: 12px 14px 12px 42px;
    font-size: 1rem;
  }

  footer {
    padding: 24px 12px 20px;
  }

  footer > section,
  footer > nav {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  header nav ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  header nav ul::-webkit-scrollbar {
    display: none;
  }

  header nav li {
    flex: 0 0 auto;
  }

  header form[role="search"] button {
    padding: 9px 14px;
  }

  #hero > div {
    min-width: 0;
    flex: 1 1 calc(50% - 8px);
    margin: 8px 8px 0 0;
  }

  #hero > div p strong {
    font-size: 1.3rem;
  }

  #sitemap ul,
  #links ul {
    gap: 8px;
  }

  #sitemap a,
  #links a {
    padding: 5px 11px;
    font-size: 0.82rem;
  }
}

/* ============ Utility / Print ============ */
::selection {
  background: var(--primary);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-soft);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-soft);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

@media print {
  header,
  footer,
  main > nav,
  #hero::before,
  #hero::after {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  section {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}