:root {
  --bg-primary: #0a0a14;
  --bg-secondary: #12121f;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --accent-1: #7c3aed;
  --accent-2: #ec4899;
  --accent-3: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #f59e0b 100%);
  --accent-gradient-2: linear-gradient(135deg, #06b6d4 0%, #7c3aed 100%);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --max-width: 1200px;
  --header-height: 72px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a0;
    --border-subtle: rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
  }
}

*,
*::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%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(124, 58, 237, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(124, 58, 237, 0.4);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-1), var(--accent-2));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent-2), var(--accent-1));
}

a {
  color: var(--accent-3);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--accent-2);
}

a:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
  border-radius: 4px;
}

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

ul, ol {
  list-style: none;
}

/* ===== HEADER ===== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 20, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

@media (prefers-color-scheme: light) {
  header {
    background: rgba(255, 255, 255, 0.72);
  }
}

header:hover {
  box-shadow: 0 4px 30px rgba(124, 58, 237, 0.1);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

nav > a:first-child {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  position: relative;
  transition: transform var(--transition-bounce);
}

nav > a:first-child:hover {
  transform: scale(1.05);
}

nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav ul li a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

nav ul li a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
  transition: transform var(--transition-smooth);
}

nav ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-card);
  transform: translateY(-1px);
}

nav ul li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* ===== MAIN ===== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

article {
  animation: fadeInUp 0.8s ease-out both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== H1 Banner ===== */
h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.03em;
  text-align: center;
  padding: 80px 24px 60px;
  margin: 0 -24px 48px;
  position: relative;
  color: #fff;
  background: var(--accent-gradient);
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  overflow: hidden;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

h1::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

h1::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  pointer-events: none;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ===== SECTIONS ===== */
section {
  margin-bottom: 64px;
  scroll-margin-top: calc(var(--header-height) + 20px);
  opacity: 0;
  transform: translateY(40px);
  animation: sectionReveal 0.7s ease-out forwards;
}

section:nth-child(1) { animation-delay: 0.05s; }
section:nth-child(2) { animation-delay: 0.1s; }
section:nth-child(3) { animation-delay: 0.15s; }
section:nth-child(4) { animation-delay: 0.2s; }
section:nth-child(5) { animation-delay: 0.25s; }
section:nth-child(6) { animation-delay: 0.3s; }
section:nth-child(7) { animation-delay: 0.35s; }
section:nth-child(8) { animation-delay: 0.4s; }
section:nth-child(9) { animation-delay: 0.45s; }
section:nth-child(10) { animation-delay: 0.5s; }
section:nth-child(11) { animation-delay: 0.55s; }
section:nth-child(12) { animation-delay: 0.6s; }
section:nth-child(13) { animation-delay: 0.65s; }
section:nth-child(14) { animation-delay: 0.7s; }
section:nth-child(15) { animation-delay: 0.75s; }
section:nth-child(16) { animation-delay: 0.8s; }

@keyframes sectionReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== HEADINGS ===== */
h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  padding-bottom: 16px;
  position: relative;
  color: var(--text-primary);
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent-gradient);
  border-radius: 4px;
  transition: width var(--transition-smooth);
}

section:hover h2::after {
  width: 100px;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  margin-top: 32px;
  color: var(--text-primary);
  position: relative;
  padding-left: 16px;
}

h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 4px;
  height: 1em;
  background: var(--accent-gradient-2);
  border-radius: 2px;
}

h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  margin-top: 24px;
  color: var(--accent-3);
}

/* ===== PARAGRAPHS ===== */
p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.9;
  font-size: 0.95rem;
}

/* ===== GLASS CARDS ===== */
section > p,
section > h3 + p,
section > h3 ~ p {
  position: relative;
}

section > h2 + p,
section > h3 + p {
  padding: 20px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

section > h2 + p:hover,
section > h3 + p:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.15);
  border-color: rgba(124, 58, 237, 0.3);
}

/* ===== ARTICLE CARDS (news, tech articles) ===== */
section#news article,
section#articles article {
  padding: 28px;
  margin-bottom: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

section#news article::before,
section#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

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

section#news article:hover,
section#articles article:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.3);
}

section#news article h3,
section#articles article h3 {
  margin-top: 0;
  padding-left: 0;
  font-size: 1.15rem;
}

section#news article h3::before,
section#articles article h3::before {
  display: none;
}

section#news article p:first-of-type,
section#articles article p:first-of-type {
  font-size: 0.8rem;
  color: var(--accent-3);
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

section#news article a,
section#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--accent-2);
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: rgba(236, 72, 153, 0.1);
  border: 1px solid rgba(236, 72, 153, 0.2);
  transition: all var(--transition-fast);
}

section#news article a:hover,
section#articles article a:hover {
  background: rgba(236, 72, 153, 0.2);
  border-color: rgba(236, 72, 153, 0.4);
  transform: translateX(4px);
  color: var(--accent-2);
}

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

section#news article a:hover::after,
section#articles article a:hover::after {
  transform: translateX(3px);
}

/* ===== FAQ ===== */
section#faq h3 {
  padding: 18px 22px;
  margin-top: 16px;
  margin-bottom: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-bottom: none;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  padding-left: 22px;
  font-size: 1rem;
}

section#faq h3::before {
  display: none;
}

section#faq h3:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 58, 237, 0.3);
  transform: translateX(4px);
}

section#faq h3 + p {
  padding: 18px 22px;
  margin-top: 0;
  margin-bottom: 16px;
  background: rgba(124, 58, 237, 0.04);
  border: 1px solid var(--glass-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition-fast);
}

section#faq h3 + p:hover {
  background: rgba(124, 58, 237, 0.08);
}

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

section#sitemap ul li a,
section#links ul li a {
  display: inline-block;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  transition: all var(--transition-fast);
}

section#sitemap ul li a:hover,
section#links ul li a:hover {
  color: #fff;
  background: var(--accent-gradient);
  border-color: transparent;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.35);
}

/* ===== FOOTER SECTIONS ===== */
section#footer {
  padding: 40px 32px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
}

section#footer h2 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  margin-top: 28px;
  padding-bottom: 10px;
}

section#footer h2:first-child {
  margin-top: 0;
}

section#footer h2::after {
  width: 40px;
  height: 3px;
}

section#footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 48px 24px;
  background: linear-gradient(to top, rgba(124, 58, 237, 0.06), transparent);
  border-top: 1px solid var(--border-subtle);
  position: relative;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: var(--accent-gradient);
  opacity: 0.6;
}

footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}

footer p:first-child {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ===== HOWTO SECTION ===== */
section#howto h4 {
  display: inline-block;
  padding: 8px 18px;
  background: var(--accent-gradient-2);
  color: #fff;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 10px;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
  transition: transform var(--transition-bounce), box-shadow var(--transition-smooth);
}

section#howto h4:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.45);
}

section#howto h4 + p {
  padding: 16px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-3);
}

/* ===== TESTIMONIALS ===== */
section#testimonials h3 {
  padding: 20px 24px 8px;
  margin-top: 20px;
  margin-bottom: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-bottom: none;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--accent-2);
}

section#testimonials h3::before {
  display: none;
}

section#testimonials h3 + p {
  padding: 8px 24px 20px;
  margin-top: 0;
  margin-bottom: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-style: italic;
  color: var(--text-secondary);
  position: relative;
}

section#testimonials h3 + p::before {
  content: """;
  position: absolute;
  top: 0;
  left: 12px;
  font-size: 2.5rem;
  color: rgba(124, 58, 237, 0.2);
  font-family: Georgia, serif;
  line-height: 1;
}

/* ===== CASES ===== */
section#cases h3 {
  padding: 20px 24px;
  margin-top: 20px;
  margin-bottom: 0;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(236, 72, 153, 0.08));
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-bottom: none;
  padding-left: 24px;
  font-size: 1rem;
  color: var(--text-primary);
}

section#cases h3::before {
  display: none;
}

section#cases h3 + p {
  padding: 20px 24px;
  margin-top: 0;
  margin-bottom: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* ===== KNOWLEDGE ===== */
section#knowledge h3 {
  margin-top: 28px;
}

section#knowledge h3 + p {
  padding: 18px 22px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-1);
}

/* ===== SOLUTIONS & APPLICATIONS ===== */
section#solutions h3,
section#applications h3,
section#advantages h3,
section#products h3 {
  margin-top: 32px;
}

section#solutions h3 + p,
section#applications h3 + p,
section#advantages h3 + p,
section#products h3 + p {
  padding: 18px 22px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

section#solutions h3 + p:hover,
section#applications h3 + p:hover,
section#advantages h3 + p:hover,
section#products h3 + p:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.12);
  border-color: rgba(124, 58, 237, 0.25);
}

/* ===== ABOUT SECTION ===== */
section#about > p {
  padding: 20px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

section#about > p:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(124, 58, 237, 0.12);
}

section#about h3 {
  margin-top: 36px;
}

/* ===== CONTACT ===== */
section#contact h3 {
  margin-top: 28px;
}

section#contact h3 + p {
  padding: 14px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-3);
  letter-spacing: 0.02em;
  transition: all var(--transition-fast);
}

section#contact h3 + p:hover {
  border-color: rgba(6, 182, 212, 0.4);
  background: rgba(6, 182, 212, 0.06);
  transform: translateX(4px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  :root {
    --max-width: 100%;
    --header-height: 64px;
  }

  nav {
    padding: 0 16px;
  }

  nav ul li a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  main {
    padding: 0 16px 60px;
  }

  h1 {
    padding: 60px 16px 50px;
    margin: 0 -16px 36px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  section {
    margin-bottom: 48px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }

  nav {
    flex-direction: column;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

  nav > a:first-child {
    font-size: 1.1rem;
  }

  nav ul {
    width: 100%;
    justify-content: center;
    gap: 2px;
  }

  nav ul li a {
    padding: 6px 8px;
    font-size: 0.75rem;
  }

  h1 {
    font-size: clamp(1.4rem, 6vw, 2rem);
    padding: 48px 16px 40px;
    margin: 0 -16px 28px;
  }

  h2 {
    font-size: 1.3rem;
  }

  h3 {
    font-size: 1.05rem;
  }

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

  section#footer {
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

  section#sitemap ul li a,
  section#links ul li a {
    padding: 8px 14px;
    font-size: 0.8rem;
  }

  section#faq h3 {
    padding: 14px 16px;
    font-size: 0.9rem;
  }

  section#faq h3 + p {
    padding: 14px 16px;
  }

  section#testimonials h3 {
    padding: 16px 18px 6px;
  }

  section#testimonials h3 + p {
    padding: 6px 18px 16px;
  }

  section#cases h3 {
    padding: 16px 18px;
  }

  section#cases h3 + p {
    padding: 16px 18px;
  }

  footer {
    padding: 36px 16px;
  }
}

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

  nav ul {
    gap: 0;
  }

  nav ul li a {
    padding: 5px 6px;
    font-size: 0.7rem;
  }

  h1 {
    font-size: 1.3rem;
    padding: 40px 14px 32px;
  }

  h2 {
    font-size: 1.15rem;
    margin-bottom: 18px;
  }

  h2::after {
    width: 40px;
    height: 3px;
  }

  h3 {
    font-size: 0.95rem;
  }

  p {
    font-size: 0.875rem;
    line-height: 1.85;
  }

  section#news article,
  section#articles article {
    padding: 16px;
    border-radius: var(--radius-md);
  }

  section#news article h3,
  section#articles article h3 {
    font-size: 1rem;
  }

  section#sitemap ul,
  section#links ul {
    gap: 8px;
  }

  section#sitemap ul li a,
  section#links ul li a {
    padding: 7px 12px;
    font-size: 0.75rem;
  }

  section#contact h3 + p {
    font-size: 0.8rem;
    padding: 12px 14px;
  }
}

/* ===== 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;
  }
}

/* ===== PRINT ===== */
@media print {
  header,
  footer,
  nav {
    display: none;
  }

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

  section {
    opacity: 1;
    transform: none;
    animation: none;
    page-break-inside: avoid;
  }

  h1 {
    background: none;
    color: #000;
    text-shadow: none;
    padding: 20px 0;
    margin: 0 0 20px;
  }

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

  section > p,
  section > h3 + p,
  section#news article,
  section#articles article {
    background: none;
    border: 1px solid #ddd;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(124, 58, 237, 0.35);
  color: #fff;
}

::-moz-selection {
  background: rgba(124, 58, 237, 0.35);
  color: #fff;
}

/* ===== SMOOTH SCROLL OFFSET ===== */
[id] {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

/* ===== LIGHT MODE OVERRIDES ===== */
@media (prefers-color-scheme: light) {
  body {
    background-image:
      radial-gradient(ellipse 80% 60% at 10% 0%, rgba(124, 58, 237, 0.08) 0%, transparent 60%),
      radial-gradient(ellipse 60% 50% at 90% 20%, rgba(236, 72, 153, 0.06) 0%, transparent 55%),
      radial-gradient(ellipse 50% 40% at 50% 100%, rgba(6, 182, 212, 0.05) 0%, transparent 60%);
  }

  h1 {
    color: #fff;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
  }

  section#sitemap ul li a:hover,
  section#links ul li a:hover {
    color: #fff;
  }

  section#testimonials h3 + p::before {
    color: rgba(124, 58, 237, 0.12);
  }
}

/* ===== HIGH CONTRAST ===== */
@media (prefers-contrast: high) {
  :root {
    --text-primary: #fff;
    --text-secondary: #ddd;
    --glass-border: rgba(255, 255, 255, 0.3);
  }

  section > p,
  section > h3 + p,
  section#news article,
  section#articles article {
    border-width: 2px;
  }
}