:root {
  --color-primary: #1b2a4a;
  --color-primary-light: #2c3e50;
  --color-accent: #f5a623;
  --color-accent-2: #4a90d9;
  --color-accent-3: #e05c5c;
  --color-bg: #f4f6fb;
  --color-bg-alt: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-solid: #ffffff;
  --color-text: #1b2436;
  --color-text-muted: #5a6478;
  --color-border: rgba(27, 42, 74, 0.12);
  --color-shadow: rgba(27, 42, 74, 0.12);
  --gradient-hero: linear-gradient(135deg, #1b2a4a 0%, #2c3e50 45%, #4a90d9 100%);
  --gradient-accent: linear-gradient(135deg, #f5a623 0%, #e05c5c 100%);
  --gradient-soft: linear-gradient(135deg, rgba(74, 144, 217, 0.14) 0%, rgba(245, 166, 35, 0.14) 100%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --header-height: 72px;
  --container-max: 1200px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

[data-theme="dark"] {
  --color-bg: #0d1420;
  --color-bg-alt: #131c2c;
  --color-surface: rgba(23, 33, 51, 0.72);
  --color-surface-solid: #172133;
  --color-text: #e8edf6;
  --color-text-muted: #9aa7bd;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-shadow: rgba(0, 0, 0, 0.45);
  --gradient-hero: linear-gradient(135deg, #0d1420 0%, #1b2a4a 50%, #24456f 100%);
  --gradient-soft: linear-gradient(135deg, rgba(74, 144, 217, 0.18) 0%, rgba(245, 166, 35, 0.12) 100%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(74, 144, 217, 0.12), transparent 42%),
    radial-gradient(circle at 88% 22%, rgba(245, 166, 35, 0.1), transparent 40%);
  background-attachment: fixed;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent-2);
  text-decoration: none;
  transition: color var(--transition);
}

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  margin: 0 0 0.6em;
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.35rem); }

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.3em;
  color: var(--color-text-muted);
}

li {
  margin-bottom: 0.4em;
}

strong {
  color: var(--color-text);
  font-weight: 600;
}

time {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--gradient-soft);
  margin-bottom: 0.4em;
}

.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;
}

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

::selection {
  background: rgba(245, 166, 35, 0.35);
  color: var(--color-text);
}

/* ===== Header ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition), box-shadow var(--transition);
}

#site-header.is-scrolled {
  box-shadow: 0 8px 32px var(--color-shadow);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--color-text);
}

.logo:hover {
  color: var(--color-text);
}

.logo svg {
  border-radius: 10px;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.06);
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

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

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

#main-nav a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  border-radius: 999px;
  transition: color var(--transition), background-color var(--transition);
}

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

[data-theme="dark"] #main-nav a:hover,
[data-theme="dark"] #main-nav a:focus-visible {
  color: var(--color-accent);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.site-search {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 4px 4px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-search:focus-within {
  border-color: var(--color-accent-2);
  box-shadow: 0 0 0 4px rgba(74, 144, 217, 0.16);
}

.site-search input {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.9rem;
  color: var(--color-text);
  width: 160px;
  padding: 6px 0;
  outline: none;
}

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

.site-search button {
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-accent);
  padding: 7px 16px;
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.site-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(245, 166, 35, 0.4);
}

#theme-toggle,
#menu-toggle {
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

#theme-toggle:hover,
#menu-toggle:hover {
  border-color: var(--color-accent-2);
  color: var(--color-accent-2);
  transform: translateY(-1px);
}

#menu-toggle {
  display: none;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 16px 20px 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: var(--color-text-muted);
  opacity: 0.6;
}

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

.breadcrumb a:hover {
  color: var(--color-accent-2);
}

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

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

main > section,
main > nav {
  margin-top: 40px;
}

main > section {
  background: var(--color-surface);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3.4vw, 40px);
  box-shadow: 0 10px 40px -18px var(--color-shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

main > section:hover {
  border-color: rgba(74, 144, 217, 0.3);
}

main > section > h2 {
  position: relative;
  padding-left: 18px;
  margin-bottom: 1em;
}

main > section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: 999px;
  background: var(--gradient-accent);
}

main > section h3 {
  margin-top: 1.5em;
  color: var(--color-text);
}

main > section h3:first-of-type {
  margin-top: 0.8em;
}

/* ===== Anchor nav ===== */
.anchor-nav {
  background: var(--color-surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: 0 6px 24px -14px var(--color-shadow);
}

.anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.anchor-nav a {
  display: inline-block;
  font-size: 0.85rem;
  padding: 5px 13px;
  border-radius: 999px;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.anchor-nav a:hover,
.anchor-nav a:focus-visible {
  color: #fff;
  background: var(--gradient-accent);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px -6px rgba(245, 166, 35, 0.5);
}

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
  padding: clamp(24px, 3.6vw, 48px) !important;
  background: var(--gradient-hero) !important;
  border: none !important;
  border-radius: var(--radius-xl) !important;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 12%, rgba(245, 166, 35, 0.35), transparent 45%),
    radial-gradient(circle at 8% 88%, rgba(74, 144, 217, 0.35), transparent 45%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-content h1,
.hero-content .hero-lead {
  color: #fff;
}

.hero-content h1 {
  margin-bottom: 0.5em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.hero-lead {
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.85) !important;
  margin-bottom: 1.6em;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  list-style: none;
  margin: 0 0 1.8em;
  padding: 0;
}

.hero-stats li {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-md);
  padding: 12px 8px;
  text-align: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform var(--transition), background-color var(--transition);
}

.hero-stats li:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.18);
}

.hero-stats strong {
  display: block;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem);
  color: var(--color-accent);
  line-height: 1.2;
}

.hero-stats span {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 4px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.btn-primary {
  color: #1b2a4a;
  background: var(--gradient-accent);
  box-shadow: 0 10px 26px -10px rgba(245, 166, 35, 0.85);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px -10px rgba(245, 166, 35, 0.95);
  color: #1b2a4a;
}

.btn-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  transform: translateY(-3px);
}

/* Hero slider */
.hero-slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
}

.hero-slider .slide {
  display: none;
  margin: 0;
}

.hero-slider .slide.active {
  display: block;
  animation: fadeSlide 0.6s ease both;
}

.hero-slider .slide svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

@keyframes fadeSlide {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

.slider-controls {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
}

.slider-controls button {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  font: inherit;
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background-color var(--transition), transform var(--transition);
}

.slider-controls button:hover {
  background: rgba(245, 166, 35, 0.85);
  color: #1b2a4a;
  transform: translateY(-2px);
}

/* ===== Cards: articles / news / cases / reviews ===== */
#articles > article,
#news > article {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  margin-bottom: 16px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#articles > article:hover,
#news > article:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -20px var(--color-shadow);
  border-color: rgba(245, 166, 35, 0.45);
}

#articles > article h3,
#news > article h3 {
  margin-top: 0;
  margin-bottom: 0.4em;
}

#articles > article a {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--gradient-soft);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

#articles > article a:hover {
  background: var(--gradient-accent);
  color: #1b2a4a;
  border-color: transparent;
  transform: translateX(4px);
}

#articles section[id^="article-"] {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: var(--gradient-soft);
  border-left: 4px solid var(--color-accent-2);
}

#articles section[id^="article-"] h3 {
  margin-top: 0;
}

#articles section[id^="article-"] p:last-child {
  margin-bottom: 0;
}

/* Reviews */
#reviews blockquote {
  margin: 0 0 16px;
  padding: 22px 24px 18px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

#reviews blockquote::before {
  content: "\201C";
  position: absolute;
  top: -6px;
  left: 14px;
  font-size: 3.4rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.5;
  font-family: Georgia, serif;
}

#reviews blockquote:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px -20px var(--color-shadow);
}

#reviews blockquote p {
  margin: 0 0 0.6em;
  color: var(--color-text);
  font-size: 0.98rem;
}

#reviews blockquote footer {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: normal;
}

/* ===== FAQ ===== */
#faq details {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#faq details[open] {
  border-color: rgba(74, 144, 217, 0.4);
  box-shadow: 0 12px 30px -18px var(--color-shadow);
}

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

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  line-height: 24px;
  text-align: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-accent-2);
  font-weight: 700;
  transition: transform var(--transition), background-color var(--transition), color var(--transition);
}

#faq details[open] summary::after {
  content: "−";
  background: var(--gradient-accent);
  color: #1b2a4a;
  border-color: transparent;
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  background: var(--gradient-soft);
}

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  font-size: 0.95rem;
}

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

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 12px 16px 12px 56px;
  margin-bottom: 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: transform var(--transition), border-color var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #1b2a4a;
  font-weight: 800;
  font-size: 0.85rem;
}

#howto ol li:hover {
  transform: translateX(6px);
  border-color: rgba(245, 166, 35, 0.45);
}

/* ===== Contact ===== */
#contact address {
  font-style: normal;
}

#contact address ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

#contact address li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text);
  transition: transform var(--transition), border-color var(--transition);
}

#contact address li:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent-2);
}

/* ===== Sitemap & Links ===== */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

#sitemap a,
#links a {
  display: inline-block;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-accent);
  border-color: transparent;
  transform: translateY(-2px);
}

/* ===== Footer ===== */
#site-footer {
  margin-top: 60px;
  background: var(--gradient-hero);
  color: rgba(255, 255, 255, 0.85);
  padding: 48px 20px 24px;
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(245, 166, 35, 0.18), transparent 45%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-inner h2 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 0.8em;
}

.footer-inner p,
.footer-inner li {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.footer-inner ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-inner a {
  color: rgba(255, 255, 255, 0.78);
}

.footer-inner a:hover {
  color: var(--color-accent);
}

#site-footer > section {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#site-footer > section h2 {
  color: #fff;
  font-size: 1rem;
}

#site-footer > section p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.88rem;
  margin: 0;
}

.footer-copy {
  position: relative;
  max-width: var(--container-max);
  margin: 24px auto 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Back to top ===== */
#back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  border: none;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: #1b2a4a;
  background: var(--gradient-accent);
  padding: 12px 18px;
  border-radius: 999px;
  box-shadow: 0 12px 30px -10px rgba(245, 166, 35, 0.8);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

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

#back-to-top:hover {
  transform: translateY(-4px);
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-slider {
    order: -1;
  }
  .site-search input {
    width: 120px;
  }
}

@media (max-width: 860px) {
  #menu-toggle {
    display: inline-block;
  }
  #main-nav {
    display: none;
    flex-basis: 100%;
    order: 10;
    padding-bottom: 12px;
  }
  #main-nav.is-open {
    display: block;
    animation: fadeSlide 0.3s ease both;
  }
  #main-nav ul {
    flex-direction: column;
    gap: 2px;
  }
  #main-nav a {
    display: block;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
  }
  .header-inner {
    padding: 10px 16px;
    gap: 10px;
  }
  .header-tools {
    gap: 8px;
  }
  .site-search {
    padding-left: 10px;
  }
  .site-search input {
    width: 100px;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }
  main {
    padding: 0 14px 40px;
  }
  main > section {
    border-radius: var(--radius-md);
    padding: 20px 16px;
  }
  .breadcrumb {
    padding: 12px 14px 0;
  }
  .header-inner {
    min-height: 60px;
  }
  .logo-text {
    font-size: 1.1rem;
  }
  .site-search {
    display: none;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-primary,
  .btn-secondary {
    text-align: center;
  }
  .slider-controls {
    bottom: 8px;
    right: 8px;
  }
  .slider-controls button {
    font-size: 0.72rem;
    padding: 5px 10px;
  }
  #articles > article,
  #news > article {
    padding: 16px;
  }
  #articles section[id^="article-"] {
    padding: 16px;
  }
  #faq summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.95rem;
  }
  #howto ol li {
    padding: 10px 12px 10px 50px;
  }
  #back-to-top {
    right: 12px;
    bottom: 12px;
    padding: 10px 14px;
    font-size: 0.8rem;
  }
  #site-footer {
    padding: 36px 14px 20px;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .hero-stats li {
    padding: 10px 6px;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</function>