:root {
  --color-primary: #e94560;
  --color-primary-dark: #c73550;
  --color-secondary: #f5c542;
  --color-accent: #0f3460;
  --color-bg: #f8f9fc;
  --color-bg-alt: #ffffff;
  --color-bg-card: rgba(255, 255, 255, 0.72);
  --color-bg-glass: rgba(255, 255, 255, 0.25);
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a6a;
  --color-text-muted: #8888a0;
  --color-border: rgba(26, 26, 46, 0.1);
  --color-shadow: rgba(26, 26, 46, 0.08);
  --color-shadow-lg: rgba(26, 26, 46, 0.14);
  --color-header-bg: rgba(255, 255, 255, 0.82);
  --color-footer-bg: #1a1a2e;
  --color-footer-text: #b8b8d0;
  --gradient-banner-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
  --gradient-banner-2: linear-gradient(135deg, #16213e 0%, #1a1a2e 50%, #2d1b3d 100%);
  --gradient-primary: linear-gradient(135deg, #e94560 0%, #c73550 100%);
  --gradient-secondary: linear-gradient(135deg, #f5c542 0%, #e8a820 100%);
  --gradient-hero: linear-gradient(135deg, rgba(233, 69, 96, 0.08) 0%, rgba(245, 197, 66, 0.06) 100%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 68px;
}

[data-theme="dark"] {
  --color-bg: #0d0d1a;
  --color-bg-alt: #141428;
  --color-bg-card: rgba(26, 26, 46, 0.78);
  --color-bg-glass: rgba(26, 26, 46, 0.4);
  --color-text: #e8e8f0;
  --color-text-secondary: #b0b0c8;
  --color-text-muted: #707088;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-lg: rgba(0, 0, 0, 0.5);
  --color-header-bg: rgba(13, 13, 26, 0.85);
  --color-footer-bg: #080812;
  --color-footer-text: #8888a0;
  --gradient-hero: linear-gradient(135deg, rgba(233, 69, 96, 0.12) 0%, rgba(245, 197, 66, 0.06) 100%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-primary-dark);
  opacity: 0.85;
}

ul, ol {
  list-style: none;
}

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

h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  margin-bottom: 0.9rem;
  position: relative;
  padding-bottom: 0.6rem;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 3px;
  border-radius: 2px;
  background: var(--gradient-primary);
}

h3 {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  margin-bottom: 0.6rem;
  color: var(--color-text);
}

p {
  margin-bottom: 0.9rem;
  color: var(--color-text-secondary);
}

/* ===== Header ===== */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-header-bg);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

#site-header.scrolled {
  box-shadow: 0 4px 30px var(--color-shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand svg {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  transition: transform var(--transition-base);
}

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

.brand-text {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

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

#main-nav a {
  display: block;
  padding: 7px 13px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

#main-nav a:hover {
  background: var(--color-bg-glass);
  color: var(--color-primary);
  transform: translateY(-1px);
}

#menu-toggle,
#theme-toggle {
  display: none;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
  line-height: 1;
}

#theme-toggle {
  display: flex;
}

#menu-toggle:hover,
#theme-toggle:hover {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.06);
}

/* ===== Main ===== */
main {
  padding-top: var(--header-height);
}

section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 20px;
}

/* ===== Banner ===== */
#banner {
  position: relative;
  max-width: 100%;
  padding: 0;
  overflow: hidden;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

.banner-slide {
  display: none;
  position: relative;
  min-height: 340px;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  overflow: hidden;
}

.banner-slide.active {
  display: block;
  animation: bannerFadeIn 0.8s ease forwards;
}

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

.banner-slide:nth-child(1) {
  background: var(--gradient-banner-1);
}

.banner-slide:nth-child(2) {
  background: var(--gradient-banner-2);
}

.banner-slide svg {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
}

.banner-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 36px 36px;
  background: linear-gradient(to top, rgba(10, 10, 25, 0.85) 0%, rgba(10, 10, 25, 0.3) 60%, transparent 100%);
  color: #fff;
}

.banner-caption h2 {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: #fff;
  margin-bottom: 0.4rem;
  padding-bottom: 0;
}

.banner-caption h2::after {
  display: none;
}

.banner-caption p {
  font-size: clamp(0.85rem, 1.8vw, 1rem);
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  max-width: 640px;
}

.banner-dots {
  position: absolute;
  bottom: 18px;
  right: 28px;
  display: flex;
  gap: 10px;
  z-index: 5;
}

.banner-dots .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.banner-dots .dot.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  transform: scale(1.25);
}

.banner-dots .dot:hover {
  border-color: #fff;
  transform: scale(1.15);
}

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

#breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

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

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

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

#breadcrumb [aria-current="page"] {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ===== Hero Intro ===== */
#hero-intro {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  margin: 20px auto;
  padding: 44px 32px;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

#hero-intro::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

#hero-intro::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 197, 66, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

#hero-intro h1 {
  position: relative;
  z-index: 1;
}

#hero-intro p {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

/* ===== Cards (shared section style) ===== */
#brand-intro,
#products,
#advantages,
#solutions,
#industry,
#cases,
#testimonials,
#news,
#articles,
#knowledge,
#faq,
#howto,
#contact,
#sitemap,
#links {
  position: relative;
}

#brand-intro h3,
#products h3,
#advantages h3,
#solutions h3,
#industry h3,
#cases h3,
#testimonials h3,
#news h3,
#knowledge h3,
#howto h3,
#contact h3 {
  margin-top: 1.6rem;
  padding-left: 14px;
  border-left: 3px solid var(--color-primary);
  border-radius: 2px;
}

#brand-intro h3:first-of-type,
#products h3:first-of-type,
#advantages h3:first-of-type,
#solutions h3:first-of-type,
#industry h3:first-of-type,
#cases h3:first-of-type,
#testimonials h3:first-of-type,
#news h3:first-of-type,
#knowledge h3:first-of-type,
#howto h3:first-of-type,
#contact h3:first-of-type {
  margin-top: 1rem;
}

/* ===== Glass Card Effect for content blocks ===== */
#brand-intro > p,
#products > p,
#advantages > p,
#solutions > p,
#industry > p,
#cases > p,
#testimonials > p,
#knowledge > p {
  padding: 16px 20px;
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: 12px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#brand-intro > p:hover,
#products > p:hover,
#advantages > p:hover,
#solutions > p:hover,
#industry > p:hover,
#cases > p:hover,
#testimonials > p:hover,
#knowledge > p:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-shadow);
}

/* ===== Testimonials ===== */
#testimonials h3 {
  border-left-color: var(--color-secondary);
}

#testimonials > p {
  font-style: italic;
  position: relative;
  padding-left: 28px;
}

#testimonials > p::before {
  content: "“";
  position: absolute;
  left: 10px;
  top: 6px;
  font-size: 2rem;
  color: var(--color-primary);
  opacity: 0.3;
  font-style: normal;
  line-height: 1;
}

/* ===== News ===== */
#news h3 {
  border-left-color: var(--color-accent);
}

#news > p:first-of-type {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  padding: 0;
  background: none;
  border: none;
  backdrop-filter: none;
  font-weight: 500;
}

/* ===== Articles ===== */
#articles article {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  margin-bottom: 18px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-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-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px var(--color-shadow-lg);
  border-color: rgba(233, 69, 96, 0.2);
}

#articles article:hover::before {
  opacity: 1;
}

#articles article h3 {
  border-left: none;
  padding-left: 0;
  margin-top: 0;
  font-size: 1.1rem;
}

#articles article h3 a {
  color: var(--color-text);
}

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

#articles article > p:first-of-type {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

#articles article > p:nth-of-type(2) {
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 12px;
}

#articles article > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(233, 69, 96, 0.08);
  transition: background var(--transition-fast), transform var(--transition-fast), gap var(--transition-fast);
}

#articles article > a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateX(4px);
  gap: 8px;
}

/* ===== FAQ ===== */
#faq details {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

#faq details:hover {
  box-shadow: 0 6px 20px var(--color-shadow);
  border-color: rgba(233, 69, 96, 0.15);
}

#faq details[open] {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: 0 8px 28px var(--color-shadow);
}

#faq summary {
  padding: 16px 22px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--transition-fast), color var(--transition-fast);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(233, 69, 96, 0.08);
  transition: transform var(--transition-base), background var(--transition-fast);
  line-height: 1;
}

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

#faq summary:hover {
  background: rgba(233, 69, 96, 0.04);
  color: var(--color-primary);
}

#faq details p {
  padding: 0 22px 18px;
  font-size: 0.9rem;
  line-height: 1.8;
  margin: 0;
  animation: faqSlideIn 0.35s ease forwards;
}

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

/* ===== HowTo ===== */
#howto ol {
  counter-reset: howto-step;
  padding-left: 0;
}

#howto ol li {
  counter-increment: howto-step;
  position: relative;
  padding: 12px 16px 12px 56px;
  margin-bottom: 8px;
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

#howto ol li::before {
  content: counter(howto-step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 16px var(--color-shadow);
}

/* ===== Contact ===== */
#contact p {
  padding: 10px 16px;
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 0.9rem;
  transition: transform var(--transition-fast);
}

#contact p:hover {
  transform: translateX(4px);
}

/* ===== Sitemap & Links ===== */
#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li a,
#links li a {
  display: inline-block;
  padding: 8px 18px;
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

#sitemap li a:hover,
#links li a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.3);
  opacity: 1;
}

/* ===== Footer ===== */
#site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 40px 20px 32px;
  margin-top: 40px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  font-size: 0.85rem;
  color: var(--color-footer-text);
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-inner a {
  color: var(--color-secondary);
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.footer-inner a:hover {
  color: #fff;
  opacity: 1;
}

/* ===== Back to Top ===== */
#back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 22px rgba(233, 69, 96, 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);
  z-index: 900;
  line-height: 1;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 30px rgba(233, 69, 96, 0.55);
}

/* ===== 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);
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  #main-nav ul {
    gap: 2px;
  }
  #main-nav a {
    padding: 6px 10px;
    font-size: 0.84rem;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 60px;
  }

  .brand svg {
    width: 36px;
    height: 36px;
  }

  .brand-text {
    font-size: 1.05rem;
  }

  #menu-toggle {
    display: flex;
  }

  #theme-toggle {
    display: flex;
  }

  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
    padding: 0 20px;
    box-shadow: 0 12px 40px var(--color-shadow);
  }

  #main-nav.open {
    max-height: 520px;
    padding: 12px 20px 20px;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  #main-nav a {
    padding: 12px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }

  section {
    padding: 36px 16px;
  }

  #hero-intro {
    padding: 32px 20px;
    margin: 16px 12px;
    border-radius: var(--radius-lg);
  }

  .banner-caption {
    padding: 28px 20px 24px;
  }

  .banner-dots {
    bottom: 12px;
    right: 16px;
  }

  #banner {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .banner-slide {
    min-height: 280px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .banner-slide svg {
    min-height: 280px;
  }

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

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

  #faq details p {
    padding: 0 16px 14px;
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
  }

  #site-footer {
    padding: 32px 16px 24px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 8px;
  }

  .brand-text {
    font-size: 0.95rem;
  }

  .brand svg {
    width: 32px;
    height: 32px;
  }

  #menu-toggle,
  #theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  section {
    padding: 28px 12px;
  }

  #hero-intro {
    padding: 24px 16px;
    margin: 12px 8px;
  }

  .banner-slide {
    min-height: 220px;
  }

  .banner-slide svg {
    min-height: 220px;
  }

  .banner-caption {
    padding: 20px 14px 18px;
  }

  .banner-caption h2 {
    font-size: 1rem;
  }

  .banner-caption p {
    font-size: 0.78rem;
  }

  #articles article {
    padding: 14px 14px;
    border-radius: var(--radius-md);
  }

  #articles article h3 {
    font-size: 0.98rem;
  }

  #howto ol li {
    padding: 10px 12px 10px 48px;
    font-size: 0.85rem;
  }

  #howto ol li::before {
    left: 12px;
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
  }

  #sitemap li a,
  #links li a {
    padding: 6px 14px;
    font-size: 0.8rem;
  }

  .footer-inner p {
    font-size: 0.78rem;
  }

  #back-to-top {
    bottom: 16px;
    right: 16px;
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}

/* ===== Print ===== */
@media print {
  #site-header,
  #back-to-top,
  .banner-dots,
  #menu-toggle,
  #theme-toggle {
    display: none !important;
  }

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

  section {
    padding: 16px 0;
  }

  #site-footer {
    background: #f0f0f0;
    color: #333;
  }
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

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

::selection {
  background: rgba(233, 69, 96, 0.2);
  color: var(--color-text);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}