:root {
  --bg: #f4f5f9;
  --bg-soft: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --text: #1a1a2e;
  --text-soft: #4a4a63;
  --text-muted: #7a7a92;
  --brand: #e94560;
  --brand-2: #6a5acd;
  --brand-3: #ff7e5f;
  --accent: #1a1a2e;
  --border: rgba(26, 26, 46, 0.1);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 10px 30px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 20px 50px rgba(26, 26, 46, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 68px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --grad-brand: linear-gradient(135deg, #e94560 0%, #6a5acd 55%, #ff7e5f 100%);
  --grad-banner: linear-gradient(135deg, #1a1a2e 0%, #2d1b4e 40%, #6a5acd 75%, #e94560 100%);
  --grad-soft: linear-gradient(135deg, rgba(233, 69, 96, 0.12), rgba(106, 90, 205, 0.12));
}

[data-theme="dark"] {
  --bg: #0f0f1a;
  --bg-soft: #171726;
  --bg-glass: rgba(23, 23, 38, 0.72);
  --text: #f0f0f7;
  --text-soft: #c3c3d6;
  --text-muted: #8a8aa3;
  --border: rgba(240, 240, 247, 0.12);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  --grad-banner: linear-gradient(135deg, #0f0f1a 0%, #241338 40%, #4b3fa8 75%, #c2294a 100%);
  --grad-soft: linear-gradient(135deg, rgba(233, 69, 96, 0.18), rgba(106, 90, 205, 0.18));
}

*,
*::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;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

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

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

a:hover,
a:focus-visible {
  color: var(--brand-2);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6em;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  position: relative;
  padding-bottom: 0.5em;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--grad-brand);
}

h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  color: var(--text);
}

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

blockquote {
  margin: 0;
  padding: 0;
}

time {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

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

/* ============ Header ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s var(--ease), background-color 0.4s var(--ease);
}

#site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand:hover {
  color: var(--brand);
}

.brand svg {
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease);
}

.brand:hover svg {
  transform: rotate(-6deg) scale(1.05);
}

.brand-name {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

#main-nav {
  flex: 1;
  min-width: 0;
}

#main-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}

#main-nav a {
  display: inline-block;
  padding: 6px 10px;
  font-size: 0.88rem;
  color: var(--text-soft);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

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

#main-nav a:hover,
#main-nav a:focus-visible {
  color: var(--brand);
  background: var(--grad-soft);
}

#main-nav a:hover::after {
  width: 60%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.search-form {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 14px;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.search-form:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(233, 69, 96, 0.14);
}

.search-form input[type="search"] {
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.85rem;
  width: 130px;
  padding: 4px 0;
  outline: none;
  font-family: inherit;
}

.search-form input::placeholder {
  color: var(--text-muted);
}

.search-form button {
  border: 0;
  cursor: pointer;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  background: var(--grad-brand);
  border-radius: var(--radius-pill);
  font-family: inherit;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.search-form button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(233, 69, 96, 0.4);
}

#theme-toggle,
#menu-toggle {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-family: inherit;
  white-space: nowrap;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

#theme-toggle:hover,
#menu-toggle:hover {
  color: var(--brand);
  border-color: var(--brand);
  transform: translateY(-1px);
}

#menu-toggle {
  display: none;
}

/* ============ Main layout ============ */
main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

main > section {
  margin: 0 0 28px;
  padding: clamp(20px, 3.4vw, 40px);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.4s var(--ease), box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
  animation: reveal 0.7s var(--ease) both;
}

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

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ Breadcrumb ============ */
.breadcrumb {
  padding: 18px 4px 8px;
  font-size: 0.85rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  color: var(--text-muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--text-muted);
  opacity: 0.6;
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--brand);
}

.breadcrumb [aria-current="page"] {
  color: var(--brand);
  font-weight: 600;
}

/* ============ Banner ============ */
#banner.banner {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--grad-banner);
  background-size: 200% 200%;
  border: 0;
  padding: clamp(32px, 6vw, 72px) clamp(20px, 4vw, 56px);
  animation: reveal 0.7s var(--ease) both, gradientShift 14s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

#banner::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 20% 30%, rgba(233, 69, 96, 0.45), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(106, 90, 205, 0.45), transparent 45%);
  filter: blur(40px);
  pointer-events: none;
  animation: floatGlow 10s ease-in-out infinite alternate;
}

@keyframes floatGlow {
  from { transform: translate3d(-3%, -2%, 0) scale(1); }
  to { transform: translate3d(3%, 2%, 0) scale(1.08); }
}

.banner-slide {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.banner-slide[hidden] {
  display: none;
}

#banner h1,
#banner h2 {
  color: #fff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

#banner h2::after {
  background: linear-gradient(90deg, #ff7e5f, #e94560);
}

#banner p {
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  max-width: 760px;
}

.cta {
  display: inline-block;
  margin-top: 10px;
  padding: 12px 30px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #1a1a2e;
  background: #fff;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background-color 0.3s var(--ease);
}

.cta:hover,
.cta:focus-visible {
  color: #1a1a2e;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  background: #ffe9ec;
}

.banner-controls {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 10px;
  margin-top: 28px;
}

.banner-controls button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.25s var(--ease), transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.banner-controls button:hover,
.banner-controls button:focus-visible {
  background: rgba(255, 255, 255, 0.32);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ============ Stats ============ */
#stats ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

#stats li {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 22px 12px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--grad-soft);
  border: 1px solid var(--border);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

#stats li:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.num {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============ Content blocks ============ */
#intro h3,
#products h3,
#solutions h3,
#cases h3,
#contact h3,
#howto h3 {
  margin-top: 1.4em;
  padding-left: 14px;
  border-left: 4px solid var(--brand);
}

#intro h3:first-of-type,
#products h3:first-of-type,
#solutions h3:first-of-type,
#cases h3:first-of-type,
#contact h3:first-of-type,
#howto h3:first-of-type {
  margin-top: 0.6em;
}

/* ============ Cases / blockquotes ============ */
#cases blockquote {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

#cases blockquote p {
  position: relative;
  margin: 0;
  padding: 18px 20px 18px 48px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#cases blockquote p::before {
  content: "\201C";
  position: absolute;
  left: 14px;
  top: 6px;
  font-size: 2.4rem;
  line-height: 1;
  font-family: Georgia, serif;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

#cases blockquote p:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

/* ============ News & Articles ============ */
#news article,
#articles article {
  padding: 20px 22px;
  margin-bottom: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-soft), var(--bg));
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#news article:last-child,
#articles article:last-child {
  margin-bottom: 0;
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  border-color: rgba(233, 69, 96, 0.4);
  box-shadow: var(--shadow-md);
}

#news article h3,
#articles article h3 {
  margin-bottom: 0.35em;
  font-size: clamp(1rem, 2vw, 1.15rem);
}

#news article h3::before,
#articles article h3::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--grad-brand);
}

#articles article a {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

#articles article a::after {
  content: " \2192";
  transition: transform 0.25s var(--ease);
  display: inline-block;
}

#articles article a:hover {
  border-bottom-color: var(--brand);
}

#articles article a:hover::after {
  transform: translateX(4px);
}

/* ============ FAQ ============ */
#faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

#faq details:last-child {
  margin-bottom: 0;
}

#faq details[open] {
  border-color: rgba(233, 69, 96, 0.4);
  box-shadow: var(--shadow-md);
}

#faq summary {
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  color: var(--text);
  position: relative;
  list-style: none;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--brand);
  transition: transform 0.3s var(--ease);
}

#faq details[open] summary::after {
  content: "\2212";
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  color: var(--brand);
  background: var(--grad-soft);
}

#faq details p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--text-soft);
  animation: reveal 0.4s var(--ease) both;
}

/* ============ HowTo ============ */
#howto ol {
  counter-reset: step;
  display: grid;
  gap: 12px;
  margin: 8px 0 1em;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 58px;
  border-radius: var(--radius-md);
  background: var(--grad-soft);
  border: 1px solid var(--border);
  color: var(--text-soft);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.35);
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

/* ============ Contact & misc ============ */
#contact p,
#privacy p,
#disclaimer p,
#copyright p,
#author p {
  color: var(--text-soft);
}

#contact h3 + p {
  margin-bottom: 0.2em;
}

#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li a,
#links li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-soft);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

#sitemap li a:hover,
#links li a:hover {
  color: #fff;
  border-color: transparent;
  background: var(--grad-brand);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(233, 69, 96, 0.32);
}

#author {
  background: var(--grad-soft);
}

/* ============ Footer ============ */
footer {
  background: var(--accent);
  color: rgba(255, 255, 255, 0.78);
  padding: 40px 20px 32px;
  text-align: center;
  border-top: 1px solid var(--border);
}

[data-theme="dark"] footer {
  background: #08080f;
}

footer p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
}

footer p:first-child {
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
}

footer a {
  color: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

footer a:hover {
  color: #ff7e5f;
  border-bottom-color: #ff7e5f;
}

/* ============ Back to top ============ */
#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  cursor: pointer;
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: inherit;
  color: #fff;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--grad-brand);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s var(--ease), box-shadow 0.3s var(--ease);
}

#back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 24px 50px rgba(233, 69, 96, 0.5);
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .search-form input[type="search"] {
    width: 100px;
  }
  #main-nav a {
    padding: 6px 8px;
    font-size: 0.82rem;
  }
}

@media (max-width: 920px) {
  :root {
    --header-h: 60px;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 16px;
  }

  #main-nav {
    order: 3;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
  }

  #main-nav.is-open {
    max-height: 520px;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px 0 4px;
  }

  #main-nav a {
    display: block;
    padding: 10px 14px;
    font-size: 0.92rem;
    background: var(--bg-soft);
    border: 1px solid var(--border);
  }

  #main-nav a::after {
    display: none;
  }

  #menu-toggle {
    display: inline-block;
  }

  .search-form {
    flex: 1;
  }

  .search-form input[type="search"] {
    width: 100%;
    min-width: 0;
  }

  #stats ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  main {
    padding: 0 14px 48px;
  }

  main > section {
    border-radius: var(--radius-md);
    margin-bottom: 18px;
  }

  .header-tools {
    gap: 6px;
  }

  .search-form {
    padding-left: 10px;
  }

  .search-form button {
    padding: 6px 10px;
  }

  #theme-toggle,
  #menu-toggle {
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  .brand-name {
    font-size: 1rem;
  }

  #banner.banner {
    border-radius: var(--radius-md);
  }

  .banner-controls button {
    width: 34px;
    height: 34px;
    font-size: 0.82rem;
  }

  #stats ul {
    gap: 10px;
  }

  #stats li {
    padding: 16px 8px;
  }

  #news article,
  #articles article {
    padding: 16px;
  }

  #howto ol li {
    padding: 12px 14px 12px 52px;
  }

  #back-to-top {
    right: 14px;
    bottom: 14px;
    padding: 10px 16px;
    font-size: 0.8rem;
  }
}

@media (max-width: 400px) {
  #stats ul {
    grid-template-columns: 1fr;
  }
}

/* ============ Motion & a11y ============ */
@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;
  }
}

@media print {
  #site-header,
  #back-to-top,
  .banner-controls,
  .header-tools {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  main > section {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}