:root {
  --brand-primary: #1a3a5c;
  --brand-primary-soft: #24496e;
  --brand-accent: #f0b429;
  --brand-accent-soft: #ffd166;
  --bg-base: #f4f7fb;
  --bg-elevated: #ffffff;
  --bg-muted: #e8eef6;
  --text-primary: #14202e;
  --text-secondary: #46586c;
  --text-inverse: #f7fafd;
  --border-soft: rgba(26, 58, 92, 0.12);
  --shadow-sm: 0 2px 8px rgba(20, 32, 46, 0.06);
  --shadow-md: 0 10px 30px rgba(20, 32, 46, 0.1);
  --shadow-lg: 0 20px 50px rgba(20, 32, 46, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.55);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  --gradient-hero: linear-gradient(135deg, #1a3a5c 0%, #24496e 45%, #3a6a9a 100%);
  --gradient-accent: linear-gradient(135deg, #f0b429 0%, #ffd166 100%);
  --focus-ring: 0 0 0 3px rgba(240, 180, 41, 0.45);
}

html[data-theme="dark"] {
  --bg-base: #0d1620;
  --bg-elevated: #16232f;
  --bg-muted: #1d2d3c;
  --text-primary: #eaf1f8;
  --text-secondary: #9fb2c6;
  --text-inverse: #0d1620;
  --border-soft: rgba(159, 178, 198, 0.16);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  --glass-bg: rgba(22, 35, 47, 0.72);
  --glass-border: rgba(159, 178, 198, 0.18);
  --gradient-hero: linear-gradient(135deg, #0d1620 0%, #16283a 50%, #1f3b55 100%);
}

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

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

@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;
  }
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-base);
  background-image:
    radial-gradient(circle at 12% 0%, rgba(58, 106, 154, 0.12), transparent 45%),
    radial-gradient(circle at 88% 8%, rgba(240, 180, 41, 0.1), transparent 40%);
  background-attachment: fixed;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

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

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

html[data-theme="dark"] a {
  color: var(--brand-accent-soft);
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 6px;
}

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

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-height);
  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: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

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

.brand svg {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.3);
  transition: transform var(--transition-base);
}

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

.brand-name {
  white-space: nowrap;
}

.main-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
  justify-content: center;
}

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

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

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--brand-primary);
  background: rgba(58, 106, 154, 0.1);
}

html[data-theme="dark"] .main-nav a:hover,
html[data-theme="dark"] .main-nav a:focus-visible {
  color: var(--brand-accent-soft);
  background: rgba(240, 180, 41, 0.12);
}

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

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

.search-form {
  display: flex;
  align-items: center;
  background: var(--bg-muted);
  border-radius: var(--radius-pill);
  padding: 3px 3px 3px 14px;
  border: 1px solid var(--border-soft);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-form:focus-within {
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(240, 180, 41, 0.2);
}

.search-form input {
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.88rem;
  padding: 6px 4px;
  width: 150px;
  outline: none;
  font-family: inherit;
}

.search-form input::placeholder {
  color: var(--text-secondary);
  opacity: 0.8;
}

.search-form button,
#theme-toggle,
#menu-toggle {
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-form button {
  background: var(--gradient-accent);
  color: #1a2b3c;
  box-shadow: 0 3px 10px rgba(240, 180, 41, 0.35);
}

.search-form button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(240, 180, 41, 0.45);
}

#theme-toggle {
  background: var(--bg-muted);
  color: var(--text-primary);
  border: 1px solid var(--border-soft);
}

#theme-toggle:hover {
  background: var(--brand-primary);
  color: var(--text-inverse);
}

html[data-theme="dark"] #theme-toggle:hover {
  background: var(--brand-accent);
  color: #1a2b3c;
}

#menu-toggle {
  display: none;
  background: var(--brand-primary);
  color: var(--text-inverse);
}

#menu-toggle:hover {
  background: var(--brand-primary-soft);
}

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

main > section {
  margin: 40px 0;
  padding: 32px;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

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

main > section#hero {
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  margin-top: 24px;
}

section h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  line-height: 1.35;
  margin: 0 0 18px;
  color: var(--text-primary);
  position: relative;
  padding-left: 18px;
  letter-spacing: 0.01em;
}

section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 5px;
  border-radius: 4px;
  background: var(--gradient-accent);
  box-shadow: 0 0 12px rgba(240, 180, 41, 0.5);
}

section h3 {
  font-size: 1.12rem;
  margin: 26px 0 10px;
  color: var(--text-primary);
  font-weight: 650;
}

section p {
  margin: 0 0 14px;
  color: var(--text-secondary);
}

section ul,
section ol {
  color: var(--text-secondary);
  padding-left: 1.4em;
  margin: 0 0 16px;
}

section li {
  margin-bottom: 8px;
}

section li::marker {
  color: var(--brand-accent);
}

/* ============ Hero ============ */
#hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  color: var(--text-inverse);
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(240, 180, 41, 0.28), transparent 42%),
    radial-gradient(circle at 10% 90%, rgba(58, 106, 154, 0.55), transparent 50%);
  z-index: -1;
}

#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000, transparent 75%);
  z-index: -1;
  pointer-events: none;
}

.hero-inner {
  padding: clamp(36px, 5vw, 64px);
}

#hero-title {
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  line-height: 1.3;
  margin: 0 0 18px;
  color: var(--text-inverse);
  letter-spacing: 0.01em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
}

.hero-lead {
  max-width: 880px;
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.85;
  color: rgba(247, 250, 253, 0.88);
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #1a2b3c;
  box-shadow: 0 8px 24px rgba(240, 180, 41, 0.4);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.55) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(240, 180, 41, 0.55);
  color: #1a2b3c;
}

.btn-primary:hover::after {
  transform: translateX(120%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-inverse);
  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, 0.2);
  color: var(--text-inverse);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

/* ============ Banner carousel ============ */
.hero-banner {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 18px 40px rgba(0, 0, 0, 0.3);
}

.banner-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.banner-slide {
  flex: 0 0 100%;
  margin: 0;
  position: relative;
}

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

.banner-slide figcaption {
  position: absolute;
  left: 18px;
  bottom: 16px;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-inverse);
  background: rgba(13, 22, 32, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.banner-controls {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 14px 18px 18px;
}

.banner-controls button {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-inverse);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.banner-controls button:hover {
  background: var(--brand-accent);
  color: #1a2b3c;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(240, 180, 41, 0.35);
}

/* ============ Breadcrumb ============ */
.breadcrumb {
  margin: 24px 0 0;
}

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

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--text-secondary);
  opacity: 0.5;
}

.breadcrumb a {
  color: var(--text-secondary);
  padding: 2px 4px;
  border-radius: 6px;
}

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

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

/* ============ Blockquote ============ */
blockquote {
  margin: 16px 0;
  padding: 16px 22px;
  border-left: 4px solid var(--brand-accent);
  background: var(--bg-muted);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

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

/* ============ Articles ============ */
#articles article {
  padding: 22px;
  margin-bottom: 18px;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 180, 41, 0.4);
  background: var(--bg-elevated);
}

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

#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.08rem;
  transition: color var(--transition-fast);
}

#articles article:hover h3 {
  color: var(--brand-primary-soft);
}

html[data-theme="dark"] #articles article:hover h3 {
  color: var(--brand-accent-soft);
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(58, 106, 154, 0.1);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

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

#articles article a:hover {
  background: var(--brand-primary);
  color: var(--text-inverse);
  transform: translateX(2px);
}

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

.meta {
  font-size: 0.82rem;
  color: var(--text-secondary);
  opacity: 0.85;
  margin-bottom: 10px;
}

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

#faq details[open] {
  border-color: rgba(240, 180, 41, 0.5);
  box-shadow: var(--shadow-sm);
  background: var(--bg-elevated);
}

#faq details:hover {
  border-color: rgba(240, 180, 41, 0.35);
}

#faq summary {
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-primary);
  list-style: none;
  position: relative;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  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: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--brand-primary);
  background: rgba(58, 106, 154, 0.12);
  border-radius: 50%;
  transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base);
}

html[data-theme="dark"] #faq summary::after {
  color: var(--brand-accent);
  background: rgba(240, 180, 41, 0.14);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  background: var(--gradient-accent);
  color: #1a2b3c;
}

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

html[data-theme="dark"] #faq summary:hover {
  color: var(--brand-accent-soft);
}

#faq details > p {
  padding: 0 20px 18px;
  margin: 0;
  animation: fadeSlide 0.35s ease both;
}

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

/* ============ Contact / address ============ */
#contact address {
  font-style: normal;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  border: 1px solid var(--border-soft);
  display: grid;
  gap: 6px;
}

#contact address p {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

/* ============ Sitemap / links ============ */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

#sitemap a,
#links a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-muted);
  border: 1px solid var(--border-soft);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

#sitemap a:hover,
#links a:hover {
  background: var(--brand-primary);
  color: var(--text-inverse);
  border-color: transparent;
  transform: translateY(-2px);
}

html[data-theme="dark"] #sitemap a:hover,
html[data-theme="dark"] #links a:hover {
  background: var(--brand-accent);
  color: #1a2b3c;
}

/* ============ Footer ============ */
footer {
  margin-top: 60px;
  background: var(--gradient-hero);
  color: rgba(247, 250, 253, 0.85);
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(240, 180, 41, 0.2), transparent 50%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
  display: grid;
  gap: 8px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.88rem;
}

.footer-inner a {
  color: var(--brand-accent-soft);
  font-weight: 600;
}

.footer-inner a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ============ Back to top ============ */
#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: var(--gradient-accent);
  color: #1a2b3c;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.2;
  padding: 0;
  box-shadow: 0 8px 24px rgba(240, 180, 41, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), box-shadow var(--transition-base);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 14px 32px rgba(240, 180, 41, 0.6);
}

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

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

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .main-nav {
    justify-content: flex-start;
  }
  .search-form input {
    width: 120px;
  }
  main > section {
    padding: 26px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }
  .header-inner {
    gap: 10px;
    padding: 0 14px;
  }
  #menu-toggle {
    display: inline-block;
  }
  .main-nav {
    display: none;
    order: 5;
    flex-basis: 100%;
    flex-direction: column;
    gap: 2px;
    padding: 10px 0 14px;
    border-top: 1px solid var(--border-soft);
    margin-top: 4px;
  }
  .main-nav.is-open {
    display: flex;
    animation: fadeSlide 0.3s ease both;
  }
  .main-nav a {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    width: 100%;
  }
  .main-nav a::after {
    display: none;
  }
  .header-tools {
    gap: 6px;
  }
  .search-form {
    padding-left: 10px;
  }
  .search-form input {
    width: 96px;
  }
  .search-form button {
    padding: 7px 12px;
  }
  main {
    padding: 0 14px;
  }
  main > section {
    margin: 26px 0;
    padding: 22px;
    border-radius: var(--radius-md);
  }
  .hero-inner {
    padding: 28px 20px;
  }
  .hero-actions {
    gap: 10px;
  }
  .btn-primary,
  .btn-secondary {
    padding: 11px 22px;
    font-size: 0.9rem;
  }
  .banner-controls {
    justify-content: center;
  }
  .banner-slide figcaption {
    left: 12px;
    bottom: 12px;
    font-size: 0.78rem;
    padding: 5px 12px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }
  .brand-name {
    font-size: 0.95rem;
  }
  .brand svg {
    width: 30px;
    height: 30px;
  }
  .search-form {
    display: none;
  }
  .header-tools {
    margin-left: auto;
  }
  #theme-toggle,
  #menu-toggle {
    padding: 7px 12px;
    font-size: 0.8rem;
  }
  main > section {
    padding: 18px;
  }
  section h2 {
    font-size: 1.25rem;
    padding-left: 14px;
  }
  section h2::before {
    width: 4px;
  }
  section h3 {
    font-size: 1.02rem;
  }
  #hero-title {
    font-size: 1.4rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
  #articles article {
    padding: 16px;
  }
  #faq summary {
    padding: 14px 44px 14px 16px;
    font-size: 0.92rem;
  }
  #contact address {
    padding: 16px 18px;
  }
  #back-to-top {
    width: 46px;
    height: 46px;
    right: 14px;
    bottom: 14px;
    font-size: 0.66rem;
  }
  .footer-inner {
    padding: 30px 16px;
  }
}

/* ============ Reduced motion fallback ============ */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
  .banner-track {
    transition: none;
  }
}

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