@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Noto+Sans+JP:wght@300;400;600&display=swap');

:root {
  /* Surfaces */
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --bg-3: #272729;
  --surface: #ffffff;
  --surface-hover: #f5f5f7;
  /* Borders */
  --border: rgba(0,0,0,0.08);
  --border-hard: #e0e0e0;
  /* Accent – Action Blue */
  --accent: #0066cc;
  --accent-2: #0071e3;
  --accent-dark: #2997ff;
  --accent-glow: rgba(0,102,204,0.12);
  --accent-glow-strong: rgba(0,102,204,0.22);
  /* Text (light surfaces) */
  --text-1: #1d1d1f;
  --text-2: #333333;
  --text-3: #7a7a7a;
  --text-4: #86868b;
  /* Border radius */
  --radius-card: 18px;
  --radius-pill: 9999px;
  --radius-sm: 8px;
  --radius-md: 11px;
  /* Typography */
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Hiragino Kino ProN W3', 'Noto Sans JP', system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', 'Hiragino Kino ProN W3', 'Noto Sans JP', system-ui, sans-serif;
  --font-ui: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', 'Hiragino Kino ProN W3', 'Noto Sans JP', system-ui, sans-serif;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --shadow-card: none;
  --shadow-glow: none;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ─── READING PROGRESS ─── */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: var(--accent);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ─── NAVIGATION ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 2rem;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #000000;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: transform var(--transition);
}

.nav.hidden { transform: translateY(-100%); }

.nav-logo {
  font-family: var(--font-display);
  font-style: normal;
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.12px;
}

.nav-logo span { color: var(--accent-dark); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  letter-spacing: -0.12px;
  transition: color var(--transition);
  padding: 0.25rem 0;
  border-bottom: none;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
  border-bottom-color: transparent;
}

.nav-cta {
  font-family: var(--font-ui);
  font-size: 0.75rem !important;
  font-weight: 400 !important;
  letter-spacing: -0.12px !important;
  color: #ffffff !important;
  background: var(--accent) !important;
  padding: 0.375rem 1rem !important;
  border-radius: var(--radius-pill) !important;
  border-bottom: none !important;
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--accent-2) !important;
  box-shadow: none !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: rgba(255,255,255,0.8);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── SUB NAV ─── */
.sub-nav {
  position: sticky;
  top: 44px;
  z-index: 900;
  background: rgba(245,245,247,0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 52px;
  display: flex;
  align-items: center;
}

.sub-nav ul {
  display: flex;
  gap: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  align-items: center;
  height: 100%;
}

.sub-nav ul::-webkit-scrollbar { display: none; }

.sub-nav a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: -0.224px;
  color: var(--text-3);
  text-decoration: none;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  height: 52px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.sub-nav a:hover,
.sub-nav a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ─── HERO ─── */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 7rem 2rem 5rem;
  background: var(--bg);
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.25;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.231px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 600;
  line-height: 1.07;
  color: var(--text-1);
  margin-bottom: 1.5rem;
  letter-spacing: -0.28px;
}

.hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero-lead {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--text-3);
  line-height: 1.5;
  margin-bottom: 2.5rem;
  max-width: 580px;
  margin-inline: auto;
}

/* ─── CTA BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: 1.0625rem;
  letter-spacing: -0.374px;
  padding: 0.6875rem 1.375rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  outline: none;
}

.btn:active { transform: scale(0.95); }

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover { background: var(--accent-2); }

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-secondary:hover { background: rgba(0,102,204,0.06); }

.btn-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── STAT BAR ─── */
.stat-bar {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2rem;
}

.stat-bar-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item dt {
  font-family: var(--font-display);
  font-style: normal;
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.1;
  letter-spacing: -0.374px;
  margin-bottom: 0.35rem;
}

.stat-item dd {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: -0.12px;
  color: var(--text-3);
}

/* ─── SECTION ─── */
.section {
  padding: 5rem 2rem;
}

.section-sm { padding: 3rem 2rem; }

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.231px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.1;
  letter-spacing: -0.374px;
  margin-bottom: 1rem;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--text-3);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.47;
}

/* ─── GLASS CARD ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  transition: border-color var(--transition), background var(--transition);
}

.card:hover {
  background: var(--surface-hover);
  border-color: rgba(0,102,204,0.2);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.card-title {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  margin-bottom: 0.5rem;
}

.card-body {
  font-size: 0.875rem;
  color: var(--text-3);
  line-height: 1.43;
  letter-spacing: -0.224px;
}

/* ─── GRID LAYOUTS ─── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  align-items: start;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

/* ─── CATEGORY GRID ─── */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.category-card {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 1.75rem 1.5rem;
  text-align: center;
  text-decoration: none;
  color: var(--text-1);
  transition: border-color var(--transition), background var(--transition);
  display: block;
}

.category-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.category-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.category-label {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.374px;
  color: var(--text-2);
}

/* ─── HERO SPLIT ─── */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 80vh;
  padding: 8rem 2rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-split-text h1 {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.374px;
  margin-bottom: 1.25rem;
  color: var(--text-1);
}

.hero-split-text h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero-split-text p {
  font-size: 1.0625rem;
  color: var(--text-3);
  line-height: 1.47;
  margin-bottom: 1.75rem;
}

.hero-split-visual {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 2.5rem;
}

/* ─── CHECK LIST ─── */
.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.47;
}

.check-list li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-ui);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* ─── BADGE LIST ─── */
.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: -0.12px;
  padding: 0.4rem 0.875rem;
  border-radius: var(--radius-pill);
  background: rgba(0,102,204,0.08);
  color: var(--accent);
  border: 1px solid rgba(0,102,204,0.15);
}

/* ─── STEPS ─── */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-hard);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: var(--font-display);
  font-style: normal;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  width: 3rem;
  letter-spacing: -0.374px;
}

.step-body h3 {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  margin-bottom: 0.5rem;
}

.step-body p {
  font-size: 0.875rem;
  color: var(--text-3);
  line-height: 1.47;
  letter-spacing: -0.224px;
}

/* ─── FAQ ACCORDION ─── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item.open { border-color: rgba(0,102,204,0.3); }

.faq-q {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  transition: background var(--transition);
}

.faq-q:hover { background: var(--surface-hover); }

.faq-icon {
  color: var(--accent);
  font-size: 1.25rem;
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-a {
  font-size: 1.0625rem;
  color: var(--text-3);
  line-height: 1.47;
  letter-spacing: -0.374px;
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), padding 0.3s;
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 1.5rem 1.25rem;
}

/* ─── MERIT / DEMERIT ─── */
.merit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.merit-card {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  border-top: 3px solid var(--accent);
}

.demerit-card {
  border-top-color: #ff3b30;
}

.merit-card h3 {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.demerit-card h3 { color: #ff3b30; }

.merit-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.merit-card li {
  font-size: 0.9375rem;
  color: var(--text-2);
  padding-left: 1.2em;
  position: relative;
  line-height: 1.47;
}

.merit-card li::before {
  content: '●';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.5em;
  top: 0.4em;
}

.demerit-card li::before { color: #ff3b30; }

/* ─── BLOG CARDS ─── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), background var(--transition);
}

.blog-card:hover {
  background: var(--surface-hover);
  border-color: rgba(0,102,204,0.2);
}

.blog-card-thumb {
  height: 160px;
  background: var(--bg-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.blog-card-body { padding: 1.5rem; flex: 1; }

.blog-card-tag {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.blog-card-title {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  line-height: 1.24;
  margin-bottom: 0.75rem;
}

.blog-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-3);
  line-height: 1.47;
  letter-spacing: -0.224px;
}

.blog-card-meta {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-4);
  padding: 0 1.5rem 1.25rem;
  display: flex;
  gap: 1rem;
}

/* ─── FEATURED ARTICLE ─── */
.featured-article {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 2.5rem;
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2.5rem;
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), background var(--transition);
}

.featured-article:hover {
  background: var(--surface-hover);
  border-color: rgba(0,102,204,0.2);
}

.featured-thumb {
  height: 200px;
  background: var(--bg-2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.featured-tag {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.featured-title {
  font-family: var(--font-ui);
  font-size: 1.3125rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  line-height: 1.24;
  margin-bottom: 0.75rem;
}

.featured-excerpt {
  font-size: 0.9375rem;
  color: var(--text-3);
  line-height: 1.47;
  margin-bottom: 1rem;
}

/* ─── ARTICLE LAYOUT ─── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.article-body { min-width: 0; }

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-hard);
}

.article-tag {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.article-title {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.1;
  letter-spacing: -0.374px;
  margin-bottom: 1rem;
}

.article-meta {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-4);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.article-content { font-size: 1.0625rem; line-height: 1.47; letter-spacing: -0.374px; }

.article-content h2 {
  font-family: var(--font-ui);
  font-size: 1.3125rem;
  font-weight: 600;
  color: var(--text-1);
  margin: 2.5rem 0 1rem;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  letter-spacing: -0.374px;
}

.article-content h3 {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.374px;
}

.article-content p { margin-bottom: 1.25rem; color: var(--text-2); }

.article-content ul, .article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-2);
}

.article-content li { margin-bottom: 0.5rem; }

.article-content a { color: var(--accent); }
.article-content a:hover { text-decoration: underline; }

.article-content strong { color: var(--text-1); font-weight: 600; }

.article-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--bg-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-2);
}

/* ─── TOC SIDEBAR ─── */
.toc-sidebar {
  position: sticky;
  top: 80px;
}

.toc-box {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 1.5rem;
}

.toc-title {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 1rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toc-list a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--text-3);
  text-decoration: none;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  display: block;
  transition: all var(--transition);
  line-height: 1.47;
}

.toc-list a:hover,
.toc-list a.active {
  color: var(--accent);
  background: rgba(0,102,204,0.06);
}

/* ─── DARK CTA SECTION ─── */
.cta-dark {
  background: var(--bg-3);
  padding: 6rem 2rem;
  text-align: center;
  color: #ffffff;
}

.cta-dark h2 {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.374px;
  margin-bottom: 1rem;
}

.cta-dark p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 2rem;
}

/* ─── FOOTER ─── */
footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border-hard);
  padding: 4rem 2rem 2rem;
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-style: normal;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.374px;
  margin-bottom: 0.75rem;
}

.footer-brand-desc {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.47;
  letter-spacing: -0.12px;
  margin-bottom: 1rem;
}

.footer-disclosure {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.6;
  padding: 0.75rem;
  background: rgba(0,0,0,0.04);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hard);
}

.footer-col h4 {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1rem;
}

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 0.5rem; }

.footer-col a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}

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

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border-hard);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: -0.12px;
}

/* ─── STICKY BOTTOM BAR ─── */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(245,245,247,0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid var(--border-hard);
  padding: 0.75rem 2rem;
  height: 64px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}

.sticky-bar.visible { transform: translateY(0); }

.sticky-bar-text {
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  color: var(--text-1);
  letter-spacing: -0.374px;
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ─── LP PAGE STYLES ─── */
.lp-hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.lp-plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.lp-plan-card {
  background: var(--surface);
  border: 1px solid var(--border-hard);
  border-radius: var(--radius-card);
  padding: 2rem;
  text-align: center;
  transition: border-color var(--transition), background var(--transition);
}

.lp-plan-card.featured {
  border-color: var(--accent);
  border-width: 2px;
}

.lp-plan-card:hover {
  background: var(--surface-hover);
  border-color: rgba(0,102,204,0.2);
}

.lp-price {
  font-family: var(--font-display);
  font-style: normal;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.374px;
  line-height: 1.1;
  margin: 0.75rem 0;
}

.lp-price-unit {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-3);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr;
    gap: 2rem;
    min-height: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .toc-sidebar { display: none; }

  .featured-article {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 44px;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .nav-links.open { display: flex; }

  .nav-toggle { display: flex; }

  .section { padding: 4rem 1.25rem; }

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

  .stat-bar-inner { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .btn-group { flex-direction: column; align-items: center; }
  .stat-bar-inner { grid-template-columns: 1fr 1fr; }
}