:root {
  --primary: #5b7cfa;
  --primary-dark: #4463d6;
  --primary-light: #eef2ff;
  --accent: #db2777;
  --accent-light: #fdf2f8;
  --success: #059669;
  --success-light: #ecfdf5;
  --bg: #f7f8fc;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.55);
  --text: #1f2430;
  --text-secondary: #4a5266;
  --text-muted: #6b7385;
  --border: #e3e7f0;
  --shadow-sm: 0 2px 8px rgba(31, 36, 48, 0.06);
  --shadow-md: 0 8px 28px rgba(31, 36, 48, 0.09);
  --shadow-lg: 0 16px 48px rgba(31, 36, 48, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --header-h: 68px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

html[data-theme="dark"],
body.dark-mode {
  --bg: #10131c;
  --bg-elevated: #181d2a;
  --bg-glass: rgba(24, 29, 42, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.08);
  --text: #e8ebf3;
  --text-secondary: #b3bacb;
  --text-muted: #8a92a6;
  --border: #2a3142;
  --primary-light: #1c2540;
  --accent-light: #2a1a24;
  --success-light: #12261f;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #10131c;
    --bg-elevated: #181d2a;
    --bg-glass: rgba(24, 29, 42, 0.72);
    --bg-glass-border: rgba(255, 255, 255, 0.08);
    --text: #e8ebf3;
    --text-secondary: #b3bacb;
    --text-muted: #8a92a6;
    --border: #2a3142;
    --primary-light: #1c2540;
    --accent-light: #2a1a24;
    --success-light: #12261f;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

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

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

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

html[data-theme="dark"] a:hover,
body.dark-mode a:hover {
  color: #8aa2ff;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background: var(--primary);
  color: #fff;
}

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

.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: 1000;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), box-shadow var(--transition);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand svg {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: transform var(--transition);
}

.brand:hover svg {
  transform: scale(1.08) rotate(-6deg);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

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

#site-header nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

#site-header nav a {
  display: block;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: background var(--transition), color var(--transition),
    transform var(--transition);
}

#site-header nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-1px);
}

#site-header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#site-search {
  width: 180px;
  padding: 9px 16px;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: border-color var(--transition), box-shadow var(--transition),
    width var(--transition);
}

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

#site-search:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91, 124, 250, 0.18);
  width: 220px;
}

#site-header form[role="search"] button {
  padding: 9px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-full);
  transition: transform var(--transition), box-shadow var(--transition);
}

#site-header form[role="search"] button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(91, 124, 250, 0.4);
}

#theme-toggle,
#menu-toggle {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: transform var(--transition), background var(--transition),
    box-shadow var(--transition);
}

#theme-toggle:hover,
#menu-toggle:hover {
  transform: translateY(-2px) rotate(8deg);
  box-shadow: var(--shadow-md);
}

#menu-toggle {
  display: none;
}

/* ===== Main layout ===== */
main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

main > section {
  margin: 56px 0;
  padding: 40px;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

main > section#hero {
  margin-top: 32px;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

/* ===== Hero ===== */
.hero-inner {
  position: relative;
  padding: 64px 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(91, 124, 250, 0.14) 0%,
    rgba(219, 39, 119, 0.1) 50%,
    rgba(5, 150, 105, 0.1) 100%
  ),
  linear-gradient(135deg, #eef2ff 0%, #fdf2f8 100%);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

html[data-theme="dark"] .hero-inner,
body.dark-mode .hero-inner {
  background: linear-gradient(
    135deg,
    rgba(91, 124, 250, 0.22) 0%,
    rgba(219, 39, 119, 0.16) 50%,
    rgba(5, 150, 105, 0.14) 100%
  ),
  linear-gradient(135deg, #181d2a 0%, #1c1a2a 100%);
}

.hero-inner::before,
.hero-inner::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner::before {
  width: 320px;
  height: 320px;
  top: -120px;
  right: -80px;
  background: var(--primary);
  animation: float 9s ease-in-out infinite;
}

.hero-inner::after {
  width: 260px;
  height: 260px;
  bottom: -100px;
  left: -60px;
  background: var(--accent);
  animation: float 11s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(24px, 18px) scale(1.08); }
}

.hero-inner h1 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.65rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-inner p {
  position: relative;
  z-index: 1;
  max-width: 820px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.hero-inner .hero-lead {
  font-size: 1.06rem;
  color: var(--text);
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 6px 20px rgba(91, 124, 250, 0.35);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(91, 124, 250, 0.5);
}

.btn-secondary {
  color: var(--primary);
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1.5px solid var(--primary);
}

.btn-secondary:hover {
  color: #fff;
  background: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(91, 124, 250, 0.35);
}

/* ===== Banner carousel ===== */
.banner-carousel {
  position: relative;
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.banner-carousel .slide {
  display: none;
  animation: fadeSlide 0.7s ease;
}

.banner-carousel .slide.active {
  display: block;
}

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

.banner-carousel svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 4px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.breadcrumb li + li::before {
  content: "›";
  margin-right: 8px;
  color: var(--text-muted);
}

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

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

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

/* ===== Headings ===== */
h2 {
  position: relative;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 26px;
  padding-left: 18px;
  color: var(--text);
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: var(--radius-full);
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 30px 0 12px;
  color: var(--text);
}

h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 22px 0 8px;
  color: var(--primary);
}

p {
  margin-bottom: 14px;
  color: var(--text-secondary);
}

/* ===== Lists ===== */
#about ul,
#howto ul,
#contact ul,
#sitemap ul,
#links ul {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

#about ul li,
#howto ul li,
#contact ul li,
#sitemap ul li,
#links ul li {
  position: relative;
  padding: 12px 18px 12px 42px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#about ul li::before,
#howto ul li::before,
#contact ul li::before,
#sitemap ul li::before,
#links ul li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

#about ul li:hover,
#howto ul li:hover,
#contact ul li:hover,
#sitemap ul li:hover,
#links ul li:hover {
  transform: translateX(4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

#howto ol {
  counter-reset: howto;
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

#howto ol li {
  counter-increment: howto;
  position: relative;
  padding: 16px 20px 16px 60px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#howto ol li::before {
  content: counter(howto);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
}

#howto ol li:hover {
  transform: translateX(4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

#sitemap ul,
#links ul {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

#sitemap ul li,
#links ul li {
  padding: 14px 18px 14px 42px;
}

#sitemap ul li a,
#links ul li a {
  font-weight: 500;
}

/* ===== Articles & news ===== */
#news article,
#articles article {
  position: relative;
  padding: 24px 26px;
  margin-bottom: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#news article::after,
#articles article::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(91, 124, 250, 0.06),
    rgba(219, 39, 119, 0.05)
  );
  opacity: 0;
  transition: opacity var(--transition);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

#news article:hover::after,
#articles article:hover::after {
  opacity: 1;
}

#news article h3,
#articles article h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  transition: color var(--transition);
}

#news article:hover h3,
#articles article:hover h3 {
  color: var(--primary);
}

#news article time,
#articles article time {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: var(--radius-full);
}

#news article a,
#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 600;
}

#news article a::after,
#articles article a::after {
  content: "→";
  transition: transform var(--transition);
}

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

/* ===== Blockquote ===== */
blockquote {
  position: relative;
  margin: 18px 0;
  padding: 22px 26px 22px 56px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 6px;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--primary);
  opacity: 0.35;
}

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

blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--text-secondary);
}

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

#faq details[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  background: var(--bg-elevated);
}

#faq summary {
  position: relative;
  padding: 18px 54px 18px 22px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition), background var(--transition);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition),
    color var(--transition);
}

#faq details[open] summary {
  color: var(--primary);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  color: #fff;
  background: var(--primary);
}

#faq summary:hover {
  color: var(--primary);
}

#faq details p {
  padding: 0 22px 20px;
  margin: 0;
  animation: faqIn 0.35s ease;
}

@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Contact form ===== */
#contact form {
  margin-top: 26px;
}

#contact fieldset {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
}

#contact legend {
  padding: 0 12px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
}

#contact label {
  display: block;
  margin: 16px 0 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

#contact input,
#contact textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

#contact input:focus,
#contact textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91, 124, 250, 0.18);
}

#contact textarea {
  resize: vertical;
  min-height: 120px;
}

#contact button[type="submit"] {
  margin-top: 22px;
  padding: 13px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-full);
  box-shadow: 0 6px 20px rgba(91, 124, 250, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
}

#contact button[type="submit"]:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(91, 124, 250, 0.5);
}

/* ===== Footer ===== */
footer {
  margin-top: 72px;
  padding: 48px 24px 36px;
  background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  text-align: center;
}

.footer-inner > p {
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner > p:nth-child(2) {
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-inner nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  margin-top: 22px;
}

.footer-inner nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

/* ===== Back to top ===== */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 900;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(91, 124, 250, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition), visibility var(--transition),
    transform var(--transition), box-shadow var(--transition);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 14px 34px rgba(91, 124, 250, 0.6);
}

/* ===== Scroll animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.7s cubic-bezier(0.4, 0, 0.2, 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: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Responsive ===== */
@media (max-width: 1080px) {
  #site-header nav a {
    padding: 8px 9px;
    font-size: 0.85rem;
  }
  #site-search {
    width: 140px;
  }
  #site-search:focus {
    width: 170px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 60px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 10px;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  #site-header nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    background: var(--bg-glass);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--bg-glass-border);
    box-shadow: var(--shadow-md);
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  #site-header nav.open {
    max-height: 70vh;
    overflow-y: auto;
  }

  #site-header nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 16px 20px;
    overflow: visible;
  }

  #site-header nav a {
    padding: 13px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }

  #site-header form[role="search"] {
    display: none;
  }

  #menu-toggle {
    display: grid;
    margin-left: auto;
  }

  main {
    padding: 0 16px;
  }

  main > section {
    margin: 36px 0;
    padding: 26px 22px;
    border-radius: var(--radius-md);
  }

  .hero-inner {
    padding: 40px 26px;
    border-radius: var(--radius-md);
  }

  .hero-inner::before {
    width: 220px;
    height: 220px;
  }

  .hero-inner::after {
    width: 180px;
    height: 180px;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  #news article,
  #articles article {
    padding: 20px;
  }

  #contact fieldset {
    padding: 20px;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr;
  }

  #back-to-top {
    right: 16px;
    bottom: 18px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  h2 {
    font-size: 1.3rem;
    padding-left: 14px;
    margin-bottom: 20px;
  }

  h2::before {
    width: 4px;
  }

  h3 {
    font-size: 1.08rem;
    margin-top: 24px;
  }

  h4 {
    font-size: 1rem;
  }

  main > section {
    padding: 22px 16px;
  }

  .hero-inner {
    padding: 32px 18px;
  }

  .hero-inner h1 {
    font-size: 1.5rem;
  }

  .hero-inner .hero-lead {
    font-size: 0.98rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  blockquote {
    padding: 18px 18px 18px 46px;
  }

  blockquote::before {
    left: 12px;
    font-size: 2.4rem;
  }

  #faq summary {
    padding: 16px 48px 16px 16px;
    font-size: 0.95rem;
  }

  #faq details p {
    padding: 0 16px 16px;
  }

  #about ul li,
  #howto ul li,
  #contact ul li,
  #sitemap ul li,
  #links ul li {
    padding: 10px 14px 10px 36px;
  }

  #about ul li::before,
  #howto ul li::before,
  #contact ul li::before,
  #sitemap ul li::before,
  #links ul li::before {
    left: 14px;
  }

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

  #howto ol li::before {
    left: 12px;
    width: 26px;
    height: 26px;
  }

  .footer-inner nav ul {
    gap: 6px 16px;
  }
}