:root {
  --primary: #6c3ef5;
  --primary-dark: #4a22c9;
  --primary-light: #8b6bff;
  --accent: #ff5b8a;
  --accent-2: #ffd166;
  --grad-hero: linear-gradient(135deg, #6c3ef5 0%, #ff5b8a 100%);
  --grad-soft: linear-gradient(135deg, rgba(108, 62, 245, 0.12) 0%, rgba(255, 91, 138, 0.12) 100%);
  --bg: #f6f4fb;
  --bg-alt: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-strong: rgba(255, 255, 255, 0.88);
  --text: #1c1630;
  --text-soft: #4a4462;
  --text-muted: #7a7492;
  --border: rgba(108, 62, 245, 0.14);
  --border-strong: rgba(108, 62, 245, 0.28);
  --shadow-sm: 0 2px 10px rgba(28, 22, 48, 0.06);
  --shadow-md: 0 8px 28px rgba(28, 22, 48, 0.1);
  --shadow-lg: 0 18px 48px rgba(28, 22, 48, 0.16);
  --shadow-primary: 0 10px 30px rgba(108, 62, 245, 0.28);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --header-h: 68px;
  --max-w: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition: 0.28s var(--ease);
  color-scheme: light;
}

html[data-theme="dark"],
body.dark-mode {
  --bg: #0d0a18;
  --bg-alt: #16112a;
  --bg-glass: rgba(22, 17, 42, 0.72);
  --bg-glass-strong: rgba(22, 17, 42, 0.9);
  --text: #f0edff;
  --text-soft: #c2bce0;
  --text-muted: #928bb5;
  --border: rgba(139, 107, 255, 0.18);
  --border-strong: rgba(139, 107, 255, 0.34);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
  --shadow-primary: 0 10px 30px rgba(108, 62, 245, 0.45);
  color-scheme: dark;
}

*,
*::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: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(108, 62, 245, 0.1), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(255, 91, 138, 0.1), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(108, 62, 245, 0.06), transparent 55%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

.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;
}

::selection {
  background: rgba(108, 62, 245, 0.28);
  color: var(--text);
}

/* ---------- 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(--border);
  transition: background-color var(--transition), box-shadow var(--transition);
}

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

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

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

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

.brand-logo {
  border-radius: 12px;
  box-shadow: var(--shadow-primary);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.brand-name {
  font-size: 1.18rem;
  letter-spacing: 0.5px;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#main-nav {
  flex: 1 1 auto;
}

#main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

#main-nav a {
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-soft);
  position: relative;
  transition: color var(--transition), background-color var(--transition), transform var(--transition);
}

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

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

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

.site-search {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  transition: border-color var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

.site-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(108, 62, 245, 0.14);
}

.site-search input {
  border: none;
  background: transparent;
  padding: 7px 12px;
  font-size: 0.88rem;
  color: var(--text);
  width: 168px;
  font-family: inherit;
  outline: none;
}

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

.site-search button {
  border: none;
  cursor: pointer;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--grad-hero);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.site-search button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
  filter: brightness(1.08);
}

#theme-toggle,
#menu-toggle {
  border: 1px solid var(--border);
  background: var(--bg-glass-strong);
  color: var(--text-soft);
  cursor: pointer;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  transition: all var(--transition);
  flex-shrink: 0;
}

#theme-toggle:hover,
#menu-toggle:hover {
  color: var(--primary);
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

#menu-toggle {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  max-width: var(--max-w);
  margin: 32px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 32px;
  align-items: center;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 1200 / 420;
  min-height: 260px;
  background: var(--grad-hero);
  isolation: isolate;
}

.hero-slider::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(13, 10, 24, 0.65) 100%);
  pointer-events: none;
  z-index: 1;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.slide svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 24px 28px;
  color: #fff;
}

.slide-caption h2 {
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  font-weight: 800;
  margin-bottom: 6px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
  line-height: 1.3;
}

.slide-caption p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.86);
  max-width: 520px;
  line-height: 1.6;
}

.hero-text {
  animation: fadeUp 0.8s var(--ease) both;
}

.hero-text h1 {
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: 0.3px;
  margin-bottom: 16px;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 0.98rem;
  color: var(--text-soft);
  margin-bottom: 24px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
  will-change: transform;
}

.btn-primary {
  background: var(--grad-hero);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(108, 62, 245, 0.42);
}

.btn-secondary {
  background: var(--bg-glass-strong);
  color: var(--primary);
  border: 1px solid var(--border-strong);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  color: var(--accent);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-md);
}

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

.hero-stats li {
  flex: 1 1 120px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.hero-stats li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.2;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  max-width: var(--max-w);
  margin: 28px auto 0;
  padding: 0 20px;
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "›";
  color: var(--text-muted);
  opacity: 0.6;
}

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

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

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

/* ---------- Anchor nav ---------- */
.anchor-nav {
  max-width: var(--max-w);
  margin: 18px auto 0;
  padding: 0 20px;
}

.anchor-nav ul {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.anchor-nav a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-soft);
  border-radius: 999px;
  transition: all var(--transition);
  white-space: nowrap;
}

.anchor-nav a:hover {
  color: #fff;
  background: var(--grad-hero);
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

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

main > section {
  margin-top: 40px;
  padding: 32px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

main > section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-hero);
  opacity: 0;
  transition: opacity var(--transition);
}

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

main > section:hover::before {
  opacity: 1;
}

main > section h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.65rem);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 18px;
  padding-left: 16px;
  position: relative;
  color: var(--text);
}

main > section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 1.1em;
  border-radius: 4px;
  background: var(--grad-hero);
}

main > section h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin: 26px 0 10px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

main > section h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-hero);
  flex-shrink: 0;
}

main > section p {
  color: var(--text-soft);
  margin-bottom: 12px;
  line-height: 1.85;
}

main > section ul:not([class]),
main > section ol {
  margin: 12px 0 16px;
  display: grid;
  gap: 10px;
}

main > section ul:not([class]) li,
main > section ol li {
  position: relative;
  padding-left: 26px;
  color: var(--text-soft);
  line-height: 1.8;
}

main > section ul:not([class]) li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grad-hero);
  box-shadow: 0 0 0 3px rgba(108, 62, 245, 0.14);
}

main > section ol {
  counter-reset: step;
}

main > section ol li {
  counter-increment: step;
  padding-left: 40px;
}

main > section ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.25em;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--grad-hero);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  box-shadow: var(--shadow-primary);
}

main > section strong {
  color: var(--text);
  font-weight: 700;
}

.meta-line {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 8px 12px;
  background: var(--grad-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  margin: 14px 0;
}

.meta-line time {
  font-variant-numeric: tabular-nums;
}

/* ---------- Reviews ---------- */
#reviews blockquote {
  position: relative;
  margin: 16px 0;
  padding: 22px 24px 18px 56px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#reviews blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 6px;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.8;
}

#reviews blockquote:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#reviews blockquote p {
  font-size: 0.96rem;
  color: var(--text);
  margin-bottom: 8px;
  font-style: italic;
}

#reviews blockquote footer {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: right;
}

/* ---------- News ---------- */
.news-list {
  display: grid;
  gap: 14px;
}

.news-list li {
  padding: 18px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.news-list li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--grad-hero);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.news-list li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.news-list li:hover::after {
  transform: scaleY(1);
}

.news-list h3 {
  font-size: 1rem;
  margin: 0 0 6px;
  line-height: 1.5;
}

.news-list h3::before {
  display: none;
}

.news-list h3 a {
  color: var(--text);
  font-weight: 700;
}

.news-list h3 a:hover {
  color: var(--primary);
}

.news-list p {
  font-size: 0.88rem;
  margin-bottom: 6px;
}

.news-list .meta-line {
  display: inline-block;
  padding: 2px 10px;
  margin: 4px 0 0;
  font-size: 0.76rem;
  border-left: none;
  border-radius: 999px;
}

/* ---------- Articles ---------- */
#articles > article {
  margin-top: 18px;
  padding: 22px 24px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

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

#articles > article h3 {
  margin-top: 0;
  font-size: 1.08rem;
}

#articles > article h3::before {
  display: none;
}

#articles > article h3 a {
  color: var(--text);
  font-weight: 700;
  background-image: linear-gradient(var(--primary), var(--primary));
  background-size: 0 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--transition), color var(--transition);
}

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

#articles > article p {
  font-size: 0.92rem;
}

#articles > article p:last-child a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--grad-soft);
  transition: all var(--transition);
}

#articles > article p:last-child a:hover {
  color: #fff;
  background: var(--grad-hero);
  box-shadow: var(--shadow-primary);
  transform: translateX(3px);
}

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

#faq details:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

#faq details[open] {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

#faq summary {
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  position: relative;
  list-style: none;
  transition: color var(--transition), background-color var(--transition);
  border-radius: var(--radius);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--grad-soft);
  color: var(--primary);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
  transition: transform var(--transition), background-color var(--transition), color var(--transition);
}

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

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

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  animation: fadeUp 0.35s var(--ease) both;
}

/* ---------- Contact ---------- */
.contact-list {
  display: grid;
  gap: 10px;
  margin: 16px 0 8px;
}

.contact-list li {
  padding: 12px 18px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: var(--text-soft);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.contact-list li:hover {
  transform: translateX(4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.contact-list strong {
  color: var(--text);
}

/* ---------- Sitemap & links ---------- */
.sitemap-list,
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-soft);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  color: #fff;
  background: var(--grad-hero);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

/* ---------- Footer ---------- */
#site-footer {
  margin-top: 48px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-hero);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 20px 28px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 32px;
}

.footer-inner p {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-inner strong {
  color: var(--text);
  font-size: 0.95rem;
}

.footer-inner a {
  color: var(--primary);
  font-weight: 500;
}

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

.footer-copy {
  text-align: right;
}

.footer-copy p:last-child {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ---------- Back to top ---------- */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--grad-hero);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.85);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), box-shadow var(--transition);
  font-family: inherit;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 16px 40px rgba(108, 62, 245, 0.5);
}

/* ---------- Scroll animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

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

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatY {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-slider {
    order: -1;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-copy {
    grid-column: 1 / -1;
    text-align: left;
  }

  .footer-copy p:last-child {
    justify-content: flex-start;
  }
}

@media (max-width: 860px) {
  #menu-toggle {
    display: inline-block;
  }

  #main-nav {
    order: 10;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease);
    opacity: 0;
  }

  #main-nav.open {
    max-height: 520px;
    opacity: 1;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 0 6px;
    border-top: 1px solid var(--border);
    margin-top: 6px;
  }

  #main-nav a {
    display: block;
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

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

  .site-search {
    order: 9;
    flex: 1 1 100%;
  }

  .site-search input {
    flex: 1;
    width: auto;
  }

  .header-inner {
    gap: 10px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 60px;
    --radius-lg: 18px;
    --radius-xl: 22px;
  }

  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 8px 14px;
  }

  .brand-name {
    font-size: 1.02rem;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .hero {
    margin-top: 20px;
    padding: 0 14px;
  }

  .hero-slider {
    min-height: 200px;
  }

  .slide-caption {
    padding: 16px 18px;
  }

  .slide-caption p {
    font-size: 0.82rem;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    flex: 1 1 auto;
    padding: 11px 20px;
    font-size: 0.9rem;
  }

  .hero-stats li {
    flex: 1 1 90px;
    padding: 10px 8px;
  }

  .stat-num {
    font-size: 1.2rem;
  }

  .stat-label {
    font-size: 0.72rem;
  }

  .breadcrumb,
  .anchor-nav,
  main {
    padding-left: 14px;
    padding-right: 14px;
  }

  .anchor-nav ul {
    padding: 8px;
    gap: 6px;
  }

  .anchor-nav a {
    padding: 5px 11px;
    font-size: 0.78rem;
  }

  main > section {
    margin-top: 24px;
    padding: 20px 16px;
  }

  main > section h2 {
    padding-left: 13px;
    margin-bottom: 14px;
  }

  main > section h2::before {
    width: 4px;
  }

  #reviews blockquote {
    padding: 18px 18px 14px 46px;
  }

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

  .news-list li {
    padding: 14px 16px;
  }

  #articles > article {
    padding: 18px 16px;
  }

  #faq summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.9rem;
  }

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

  .contact-list li {
    padding: 10px 14px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 14px 22px;
  }

  .footer-copy p:last-child {
    gap: 8px;
  }

  #back-to-top {
    right: 14px;
    bottom: 14px;
    width: 42px;
    height: 42px;
    font-size: 0.66rem;
  }
}

@media (max-width: 380px) {
  .brand-name {
    font-size: 0.92rem;
  }

  .hero-stats {
    flex-direction: column;
  }

  .hero-stats li {
    flex-basis: auto;
  }
}

/* ---------- Reduced motion ---------- */
@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;
  }
}

/* ---------- Print ---------- */
@media print {
  #site-header,
  .anchor-nav,
  #back-to-top,
  .hero-slider,
  .hero-actions,
  .site-search {
    display: none !important;
  }

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

  main > section {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }

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