:root {
  --brand-primary: #6d28d9;
  --brand-secondary: #8b5cf6;
  --brand-accent: #fbbf24;
  --brand-deep: #3b0764;
  --bg-body: #f8f7fc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1eefb;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(109, 40, 217, 0.14);
  --text-primary: #1c1526;
  --text-secondary: #4b4259;
  --text-muted: #7a7189;
  --border-soft: rgba(109, 40, 217, 0.12);
  --shadow-sm: 0 2px 8px rgba(59, 7, 100, 0.06);
  --shadow-md: 0 8px 24px rgba(59, 7, 100, 0.1);
  --shadow-lg: 0 18px 48px rgba(59, 7, 100, 0.16);
  --gradient-hero: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 45%, #a78bfa 75%, #fbbf24 130%);
  --gradient-accent: linear-gradient(120deg, #8b5cf6 0%, #6d28d9 100%);
  --gradient-soft: linear-gradient(160deg, #f5f2ff 0%, #ede9fe 55%, #fef3c7 130%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition-base: 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-height: 72px;
  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #120b1e;
    --bg-surface: #1b1229;
    --bg-surface-alt: #241735;
    --bg-glass: rgba(30, 20, 48, 0.68);
    --bg-glass-border: rgba(167, 139, 250, 0.22);
    --text-primary: #f3efff;
    --text-secondary: #cdc3e6;
    --text-muted: #9d92b8;
    --border-soft: rgba(167, 139, 250, 0.18);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
    --gradient-soft: linear-gradient(160deg, #1d1330 0%, #241735 55%, #2c1c3f 130%);
  }
}

html[data-theme="dark"] {
  --bg-body: #120b1e;
  --bg-surface: #1b1229;
  --bg-surface-alt: #241735;
  --bg-glass: rgba(30, 20, 48, 0.68);
  --bg-glass-border: rgba(167, 139, 250, 0.22);
  --text-primary: #f3efff;
  --text-secondary: #cdc3e6;
  --text-muted: #9d92b8;
  --border-soft: rgba(167, 139, 250, 0.18);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
  --gradient-soft: linear-gradient(160deg, #1d1330 0%, #241735 55%, #2c1c3f 130%);
}

*,
*::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(--text-primary);
  background-color: var(--bg-body);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(139, 92, 246, 0.14), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(251, 191, 36, 0.12), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(109, 40, 217, 0.1), transparent 55%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color var(--transition-base), opacity var(--transition-base);
}

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

h1,
h2,
h3 {
  line-height: 1.3;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  margin: 0 0 18px;
}

h2 {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  margin: 0 0 20px;
  position: relative;
  padding-left: 18px;
}

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

h3 {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  margin: 26px 0 10px;
}

p {
  margin: 0 0 16px;
  color: var(--text-secondary);
}

ul,
ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--text-secondary);
}

li {
  margin-bottom: 8px;
}

blockquote {
  margin: 0 0 18px;
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  top: 4px;
  left: 14px;
  font-size: 3rem;
  line-height: 1;
  color: var(--brand-secondary);
  opacity: 0.35;
  font-family: Georgia, serif;
}

blockquote p {
  margin: 0 0 10px;
  font-style: italic;
  color: var(--text-primary);
}

blockquote cite {
  display: block;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: right;
}

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

.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: 3px solid var(--brand-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* ===== Header ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

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

.brand svg {
  border-radius: var(--radius-md);
  box-shadow: 0 6px 16px rgba(109, 40, 217, 0.35);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 10px 24px rgba(109, 40, 217, 0.45);
}

.brand-name {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.02em;
}

.header-inner nav {
  flex: 1 1 auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--brand-primary);
  background: rgba(139, 92, 246, 0.1);
  transform: translateY(-2px);
}

.nav-list a:hover::after {
  width: 60%;
}

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

.site-search input[type="search"] {
  width: 190px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), width var(--transition-base);
}

.site-search input[type="search"]::placeholder {
  color: var(--text-muted);
}

.site-search input[type="search"]:focus {
  outline: none;
  border-color: var(--brand-secondary);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.18);
  width: 230px;
}

.site-search button {
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), filter var(--transition-base);
}

.site-search button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(109, 40, 217, 0.35);
  filter: brightness(1.08);
}

#theme-toggle,
#menu-toggle {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

#theme-toggle:hover,
#menu-toggle:hover {
  color: var(--brand-primary);
  border-color: var(--brand-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#menu-toggle {
  display: none;
}

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

main > section,
.breadcrumb,
.anchor-nav {
  margin-top: 42px;
  animation: fadeUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@supports (animation-timeline: view()) {
  main > section {
    animation: fadeUp 0.7s linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}

/* ===== Breadcrumb ===== */
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--bg-glass-border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-muted);
  opacity: 0.6;
}

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

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

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

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 48px 40px;
  border-radius: var(--radius-xl);
  background: var(--gradient-hero);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.8s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.28), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(251, 191, 36, 0.35), transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  top: -60%;
  left: -20%;
  width: 60%;
  height: 220%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
  transform: rotate(18deg);
  animation: heroShine 7s ease-in-out infinite;
  pointer-events: none;
}

@keyframes heroShine {
  0%, 100% { transform: translateX(-30%) rotate(18deg); opacity: 0; }
  50% { transform: translateX(180%) rotate(18deg); opacity: 1; }
}

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

.hero h1 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(59, 7, 100, 0.35);
  max-width: 900px;
}

.hero-lead {
  color: rgba(255, 255, 255, 0.94);
  font-size: 1.02rem;
  max-width: 860px;
  line-height: 1.85;
}

.hero-meta {
  display: inline-block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 26px 0 30px;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.98rem;
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.btn-primary {
  background: #fff;
  color: var(--brand-deep);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
  color: var(--brand-primary);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.24);
  transform: translateY(-3px) scale(1.03);
  color: #fff;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
}

.hero-banner {
  margin: 8px 0 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.hero-banner:hover {
  transform: translateY(-6px) scale(1.012);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.3);
}

.hero-banner svg {
  width: 100%;
  display: block;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
}

.hero-stats > div {
  padding: 18px 16px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  text-align: center;
  transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

.hero-stats > div:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.24);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
}

.hero-stats dt {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.hero-stats dd {
  margin: 0;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

/* ===== Anchor nav ===== */
.anchor-nav {
  padding: 20px 24px;
  border-radius: var(--radius-xl);
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.anchor-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-soft);
  opacity: 0.55;
  z-index: -1;
}

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

.anchor-nav li {
  margin: 0;
}

.anchor-nav a {
  display: inline-block;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  font-size: 0.86rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-base);
}

.anchor-nav a:hover,
.anchor-nav a:focus-visible {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(109, 40, 217, 0.32);
}

/* ===== Content sections ===== */
main > section {
  padding: 34px 32px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(139, 92, 246, 0.28);
}

main > section.hero,
main > section.anchor-nav {
  padding: 48px 40px;
  background: var(--gradient-hero);
  border: none;
}

main > section.anchor-nav {
  padding: 20px 24px;
  background: var(--bg-glass);
}

/* ===== News / Articles cards ===== */
#news article,
#articles article {
  padding: 22px 24px;
  margin-bottom: 16px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(139, 92, 246, 0.32);
}

#news article:hover::before,
#articles article:hover::before {
  transform: scaleY(1);
}

#news article h3,
#articles article h3 {
  margin-top: 0;
  color: var(--text-primary);
}

#news article p,
#articles article p {
  margin-bottom: 10px;
}

#news article a,
#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--brand-primary);
  transition: gap var(--transition-base), color var(--transition-base);
}

#news article a::after,
#articles article a::after {
  content: "\2192";
  transition: transform var(--transition-base);
}

#news article a:hover,
#articles article a:hover {
  gap: 10px;
  color: var(--brand-secondary);
}

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

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

#faq details:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(139, 92, 246, 0.3);
}

#faq details[open] {
  box-shadow: var(--shadow-md);
  border-color: rgba(139, 92, 246, 0.42);
  background: var(--bg-surface);
}

#faq summary {
  padding: 18px 52px 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  position: relative;
  list-style: none;
  transition: color var(--transition-base), background var(--transition-base);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  line-height: 26px;
  text-align: center;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  transition: transform var(--transition-base), background var(--transition-base);
}

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

#faq summary:hover {
  color: var(--brand-primary);
  background: rgba(139, 92, 246, 0.06);
}

#faq details p {
  padding: 0 22px 20px;
  margin: 0;
  animation: fadeUp 0.4s ease both;
}

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

#howto ol li {
  position: relative;
  padding: 14px 18px 14px 58px;
  margin-bottom: 10px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  counter-increment: step;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px rgba(109, 40, 217, 0.3);
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(139, 92, 246, 0.32);
}

/* ===== Contact address ===== */
#contact address {
  font-style: normal;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

#contact address ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
}

#contact address li {
  margin: 0;
  padding: 8px 0 8px 26px;
  position: relative;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border-soft);
}

#contact address li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.16);
}

/* ===== Sitemap & links ===== */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
}

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

#sitemap a,
#links a {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-soft);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

#sitemap a:hover,
#links a:hover {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(109, 40, 217, 0.3);
}

/* ===== Footer ===== */
footer {
  margin-top: 60px;
  padding: 48px 20px 40px;
  background: var(--gradient-soft);
  border-top: 1px solid var(--border-soft);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px 36px;
  max-width: 100%;
}

footer > section {
  max-width: var(--max-width);
  padding: 0;
}

footer h2 {
  font-size: 1.05rem;
  margin: 0 0 14px;
  padding-left: 14px;
}

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

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

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

footer li {
  margin-bottom: 8px;
}

footer a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  position: relative;
  transition: color var(--transition-base), padding-left var(--transition-base);
}

footer a::before {
  content: "\203A";
  position: absolute;
  left: -14px;
  opacity: 0;
  transition: opacity var(--transition-base), left var(--transition-base);
  color: var(--brand-secondary);
}

footer a:hover {
  color: var(--brand-primary);
  padding-left: 6px;
}

footer a:hover::before {
  opacity: 1;
  left: -8px;
}

footer > p {
  grid-column: 1 / -1;
  text-align: center;
  margin: 12px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
}

footer > p a {
  display: inline-block;
  padding: 10px 26px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(109, 40, 217, 0.28);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

footer > p a::before {
  display: none;
}

footer > p a:hover {
  color: #fff;
  padding-left: 26px;
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(109, 40, 217, 0.4);
}

/* ===== Back to top ===== */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(109, 40, 217, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 16px 36px rgba(109, 40, 217, 0.5);
}

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

  .site-search input[type="search"] {
    width: 150px;
  }

  .site-search input[type="search"]:focus {
    width: 180px;
  }

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

@media (max-width: 860px) {
  .header-inner nav {
    order: 5;
    flex-basis: 100%;
  }

  .nav-list {
    justify-content: center;
  }

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

  .header-inner nav:not(.is-open) {
    display: none;
  }

  .header-inner nav.is-open {
    display: block;
    animation: fadeUp 0.35s ease both;
  }

  .site-search {
    margin-left: auto;
  }

  main > section,
  main > section.hero,
  main > section.anchor-nav {
    padding: 30px 22px;
  }

  .hero {
    border-radius: var(--radius-lg);
  }

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    flex: 1 1 auto;
  }
}

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

  .header-inner {
    padding: 10px 14px;
  }

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

  .site-search {
    flex: 1 1 100%;
    order: 6;
  }

  .site-search input[type="search"],
  .site-search input[type="search"]:focus {
    width: 100%;
    flex: 1 1 auto;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-stats > div {
    padding: 14px 10px;
  }

  main {
    padding: 0 14px 40px;
  }

  main > section,
  main > section.hero,
  main > section.anchor-nav {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
  }

  h2 {
    padding-left: 14px;
  }

  h2::before {
    width: 4px;
  }

  .anchor-nav ul {
    gap: 6px;
  }

  .anchor-nav a {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  #contact address ul {
    grid-template-columns: 1fr;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  #back-to-top {
    right: 14px;
    bottom: 14px;
    padding: 10px 16px;
    font-size: 0.82rem;
  }

  footer {
    padding: 36px 16px 30px;
    grid-template-columns: 1fr;
  }
}

@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,
  .anchor-nav,
  .hero-actions {
    display: none;
  }

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

  main > section {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}