:root {
  --bg: #fafbfc;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-2: #5a5a78;
  --text-3: #8a8aa0;
  --sky: #5B9BD5;
  --sky-deep: #3A7BC8;
  --sky-ghost: rgba(91,155,213,0.08);
  --sky-border: rgba(91,155,213,0.18);
  --grass: #6BAF4E;
  --grass-ghost: rgba(107,175,78,0.08);
  --red: #E85D75;
  --red-ghost: rgba(232,93,117,0.08);
  --purple: #8B7EC8;
  --purple-ghost: rgba(139,126,200,0.08);
  --pink: #F0A0B8;
  --yellow: #F0C040;
  --border: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.10);
  --shadow-sm: 0 0 0 1px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 0 0 1px rgba(0,0,0,0.05), 0 4px 16px rgba(0,0,0,0.04);
  --shadow-lg: 0 0 0 1px rgba(0,0,0,0.06), 0 8px 32px rgba(0,0,0,0.06);
  --radius: 8px;
  --radius-sm: 6px;
  --radius-xs: 4px;
  --font: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Dot grid background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image: radial-gradient(circle, rgba(91,155,213,0.25) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---- NAV ---- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
  background: transparent;
}
nav.scrolled {
  background: rgba(250,251,252,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.04);
}
.nav-brand {
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  text-decoration: none;
  display: flex; align-items: center; gap: 4px;
}
.nav-brand .accent {
  color: var(--sky);
  font-weight: 600;
}
.nav-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--sky);
  margin: 0 2px 0 6px;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.4); }
}
.nav-links {
  display: flex; gap: 32px; list-style: none; align-items: center;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: -0.1px;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--sky);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  background: var(--text) !important;
  color: #fff !important;
  padding: 7px 18px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  font-size: 0.8rem !important;
  transition: all 0.25s !important;
  letter-spacing: -0.1px !important;
}
.nav-cta:hover { background: var(--sky-deep) !important; }
.nav-cta::after { display: none !important; }

/* ---- HERO ---- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 40px 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.hero-gradient {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
}
.hero-g1 { width: 500px; height: 500px; background: var(--sky); top: -15%; right: -10%; }
.hero-g2 { width: 350px; height: 350px; background: var(--grass); bottom: -10%; left: -5%; opacity: 0.10; }
.hero-g3 { width: 200px; height: 200px; background: var(--purple); top: 40%; left: 50%; opacity: 0.08; }

.hero-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.04;
}
.hero-line {
  position: absolute;
  background: var(--text);
}
.hero-line:nth-child(1) { width: 1px; height: 100%; left: 20%; }
.hero-line:nth-child(2) { width: 1px; height: 100%; left: 40%; }
.hero-line:nth-child(3) { width: 1px; height: 100%; left: 60%; }
.hero-line:nth-child(4) { width: 1px; height: 100%; left: 80%; }
.hero-line:nth-child(5) { width: 100%; height: 1px; top: 30%; }
.hero-line:nth-child(6) { width: 100%; height: 1px; top: 60%; }

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sky-deep);
  margin-bottom: 24px;
}
.hero-title {
  font-family: var(--font);
  font-size: clamp(3rem, 7.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}
.hero-title .hl {
  background: linear-gradient(135deg, var(--sky-deep), var(--sky));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-2);
  font-weight: 400;
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.hero-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: center; margin-bottom: 48px;
}
.hero-tag {
  padding: 5px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: -0.1px;
  border: 1px solid var(--border-strong);
  color: var(--text-2);
  background: transparent;
  transition: all 0.25s;
  cursor: default;
}
.hero-tag:hover {
  border-color: var(--sky);
  color: var(--sky-deep);
  background: var(--sky-ghost);
}

/* ---- Geometry accents ---- */
.geo-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(91,155,213,0.12);
  pointer-events: none;
  z-index: 0;
}
.geo-ring-1 { width: 340px; height: 340px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.geo-ring-2 { width: 440px; height: 440px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.geo-ring-3 { width: 540px; height: 540px; top: 50%; left: 50%; transform: translate(-50%, -50%); }

.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.4;
}
.scroll-hint span {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
  display: block;
  text-align: center;
  margin-bottom: 8px;
}
.scroll-line {
  width: 1px; height: 32px;
  background: var(--sky);
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; height: 24px; }
  50% { opacity: 0.8; height: 36px; }
}

/* ---- SECTIONS ---- */
section {
  position: relative;
  z-index: 1;
  padding: 120px 40px;
}
.section-header {
  text-align: center;
  margin-bottom: 72px;
}
.section-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: inline-flex; align-items: center; gap: 10px;
}
.section-num::before, .section-num::after {
  content: '';
  width: 24px; height: 1px;
  background: var(--border-strong);
}
.section-title {
  font-family: var(--font);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.section-sub {
  color: var(--text-2);
  font-size: 1rem;
  font-weight: 400;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Section accent colors */
.section-sky .section-num { color: var(--sky-deep); }
.section-sky .section-num::before, .section-sky .section-num::after { background: var(--sky-border); }
.section-grass .section-num { color: var(--grass); }
.section-grass .section-num::before, .section-grass .section-num::after { background: var(--grass-ghost); }
.section-purple .section-num { color: var(--purple); }
.section-purple .section-num::before, .section-purple .section-num::after { background: var(--purple-ghost); }
.section-red .section-num { color: var(--red); }
.section-red .section-num::before, .section-red .section-num::after { background: var(--red-ghost); }

/* ---- DISCOVERIES ---- */
.discoveries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  max-width: 1120px;
  margin: 0 auto;
}
.card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-img {
  height: 180px;
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.card-img-inner {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 2.8rem;
  font-weight: 600;
  color: rgba(0,0,0,0.06);
}
.card-badge {
  position: absolute;
  top: 12px; left: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: #fff;
  z-index: 2;
  font-family: var(--font);
}
.badge-trend { background: var(--red); }
.badge-factory { background: var(--grass); }
.badge-product { background: var(--sky-deep); }
.badge-insight { background: var(--purple); }

.card-body { padding: 20px 24px 24px; }
.card-body h3 {
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.2px;
  margin-bottom: 8px;
  color: var(--text);
}
.card-body p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.6;
}
.card-meta-row {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px;
}
.card-meta {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 50px;
  letter-spacing: -0.1px;
}
.meta-cn { background: rgba(0,0,0,0.04); color: var(--text-3); }
.meta-en { background: var(--sky-ghost); color: var(--sky-deep); }

.card-accent-line {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.card:nth-child(1) .card-accent-line { background: var(--sky); }
.card:nth-child(2) .card-accent-line { background: var(--grass); }
.card:nth-child(3) .card-accent-line { background: var(--purple); }

/* ---- CASE NOTES ---- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 28px;
  max-width: 1040px;
  margin: 0 auto;
}
.case-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 32px 30px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.case-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.case-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
}
.case-card:nth-child(1)::before { background: var(--sky); }
.case-card:nth-child(2)::before { background: var(--grass); }
.case-card:nth-child(3)::before { background: var(--purple); }
.case-card:nth-child(4)::before { background: var(--red); }

.case-number {
  font-family: var(--mono);
  font-size: 2.6rem;
  font-weight: 600;
  color: rgba(0,0,0,0.04);
  line-height: 1;
  margin-bottom: -4px;
}
.case-card h3 {
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 6px;
}
.case-card .case-client {
  font-size: 0.8rem;
  color: var(--text-3);
  margin-bottom: 14px;
  font-weight: 500;
  font-family: var(--mono);
}
.case-card p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 16px;
}
.case-stats {
  display: flex; gap: 28px;
}
.case-stat {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: var(--font);
}
.case-stat strong {
  display: block;
  font-size: 1.2rem;
  color: var(--text);
  font-weight: 700;
  font-family: var(--mono);
  letter-spacing: -0.5px;
}

/* ---- AI LAB ---- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
}
.ai-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.ai-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.ai-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  border-radius: 0 0 0 60px;
  opacity: 0.05;
  transition: opacity 0.3s;
}
.ai-card:hover::after { opacity: 0.12; }
.ai-card:nth-child(1)::after { background: var(--purple); }
.ai-card:nth-child(2)::after { background: var(--pink); }
.ai-card:nth-child(3)::after { background: var(--sky); }
.ai-card:nth-child(4)::after { background: var(--grass); }
.ai-card:nth-child(5)::after { background: var(--yellow); }
.ai-card:nth-child(6)::after { background: var(--purple); }

.ai-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--purple);
  margin-bottom: 14px;
}
.ai-card:nth-child(2) .ai-label { color: var(--red); }
.ai-card:nth-child(3) .ai-label { color: var(--sky-deep); }
.ai-card:nth-child(4) .ai-label { color: var(--grass); }
.ai-card:nth-child(5) .ai-label { color: #C09030; }
.ai-card:nth-child(6) .ai-label { color: var(--purple); }

.ai-card h3 {
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.2px;
  margin-bottom: 8px;
}
.ai-card p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.6;
}
.ai-tools {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: -0.2px;
}

/* ---- RESOURCES ---- */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
}
.res-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.res-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.res-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
}
.res-card:nth-child(1) .res-icon { background: var(--sky); }
.res-card:nth-child(2) .res-icon { background: var(--grass); }
.res-card:nth-child(3) .res-icon { background: var(--purple); }
.res-card:nth-child(4) .res-icon { background: var(--red); }
.res-card:nth-child(5) .res-icon { background: var(--sky-deep); }
.res-card:nth-child(6) .res-icon { background: #C09030; }
.res-info h4 {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.2px;
  margin-bottom: 4px;
}
.res-info p {
  font-size: 0.8rem;
  color: var(--text-3);
  line-height: 1.5;
}

/* ---- ABOUT ---- */
.about-container {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}
.about-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 auto 32px;
  border: 3px solid var(--sky-border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--sky-deep);
  background: var(--sky-ghost);
}
.about-text {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.85;
  margin-bottom: 40px;
}
.about-text strong { color: var(--text); font-weight: 600; }
.about-cta-row {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}
.btn {
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font);
  letter-spacing: -0.1px;
}
.btn-primary {
  background: var(--text);
  color: #fff;
}
.btn-primary:hover { background: var(--sky-deep); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-outline:hover { border-color: var(--sky); color: var(--sky-deep); }
.btn-accent {
  background: var(--sky);
  color: #fff;
}
.btn-accent:hover { background: var(--sky-deep); transform: translateY(-1px); }

/* ---- HOMEPAGE SECTION CARDS ---- */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}
.home-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
}
.home-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.home-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
}
.home-card:nth-child(1)::before { background: var(--sky); }
.home-card:nth-child(2)::before { background: var(--grass); }
.home-card:nth-child(3)::before { background: var(--purple); }
.home-card:nth-child(4)::before { background: var(--red); }
.home-card-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.home-card:nth-child(1) .home-card-num { color: var(--sky-deep); }
.home-card:nth-child(2) .home-card-num { color: var(--grass); }
.home-card:nth-child(3) .home-card-num { color: var(--purple); }
.home-card:nth-child(4) .home-card-num { color: var(--red); }
.home-card h3 {
  font-family: var(--font);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
}
.home-card p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 16px;
}
.home-card-arrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: -0.1px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap 0.2s;
}
.home-card:hover .home-card-arrow { gap: 10px; }
.home-card:nth-child(1) .home-card-arrow { color: var(--sky-deep); }
.home-card:nth-child(2) .home-card-arrow { color: var(--grass); }
.home-card:nth-child(3) .home-card-arrow { color: var(--purple); }
.home-card:nth-child(4) .home-card-arrow { color: var(--red); }

/* ---- FOOTER ---- */
footer {
  position: relative;
  z-index: 1;
  padding: 48px 40px;
  text-align: center;
  background: var(--text);
  color: rgba(255,255,255,0.45);
}
.footer-brand {
  font-family: var(--font);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}
.footer-brand .accent { color: var(--sky); }
.footer-links {
  display: flex; gap: 28px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 20px;
}
.footer-links a {
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  transition: color 0.2s;
  letter-spacing: -0.1px;
}
.footer-links a:hover { color: var(--sky); }
footer .copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.2);
  font-family: var(--mono);
}

/* ---- CLICKABLE CARDS (a 标签继承) ---- */
a.card, a.case-card, a.ai-card, a.res-card {
  text-decoration: none;
  color: inherit;
}

/* ---- ARTICLE / DETAIL PAGE ---- */
.article-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 140px 24px 80px;
  position: relative;
  z-index: 1;
}
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  margin-bottom: 40px;
  transition: color 0.2s, gap 0.2s;
}
.article-back:hover { color: var(--sky-deep); gap: 10px; }

.article-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sky-deep);
  margin-bottom: 16px;
}
.article-title {
  font-family: var(--font);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.article-meta-item {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
}
.article-tag {
  padding: 3px 12px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--sky-ghost);
  color: var(--sky-deep);
}

.article-body { font-size: 1rem; line-height: 1.85; color: var(--text); }
.article-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 48px 0 16px;
}
.article-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.2px;
  margin: 36px 0 12px;
}
.article-body p { margin-bottom: 20px; color: var(--text); }
.article-body p.lead {
  font-size: 1.15rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 32px;
}
.article-body ul, .article-body ol {
  margin: 0 0 24px 20px;
  color: var(--text);
}
.article-body li { margin-bottom: 8px; line-height: 1.7; }
.article-body blockquote {
  border-left: 3px solid var(--sky);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--sky-ghost);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
  color: var(--text-2);
  font-style: italic;
}
.article-body pre {
  background: var(--text);
  color: rgba(255,255,255,0.85);
  padding: 24px 28px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 32px 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
}
.article-body code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: rgba(0,0,0,0.04);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}
.article-body pre code { background: none; padding: 0; }
.article-body img {
  width: 100%;
  border-radius: var(--radius);
  margin: 32px 0;
}
.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 0.88rem;
}
.article-body th, .article-body td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.article-body th {
  font-weight: 600;
  color: var(--text);
  background: var(--sky-ghost);
}
.article-body td { color: var(--text-2); }

.article-footer {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.article-nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s;
}
.article-nav a:hover {
  color: var(--sky-deep);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  nav { padding: 12px 20px; }
  .nav-links { display: none; }
  .hero { padding: 100px 24px 60px; min-height: 90vh; }
  .hero-title { font-size: 2.6rem; letter-spacing: -1px; }
  .hero-lines { opacity: 0.02; }
  section { padding: 72px 20px; }
  .discoveries-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: 1fr; }
  .home-grid { grid-template-columns: 1fr; }
  .case-stats { flex-wrap: wrap; gap: 16px; }
  .section-title { font-size: 1.8rem; }
}