/* ============================================================
   GEO-opas.fi — Päätyylitiedosto
   Väripaletti: tumma teräksenharmaa + yönsininen
   ============================================================ */

:root {
  --clr-bg:          #0f1117;
  --clr-bg2:         #161b27;
  --clr-bg3:         #1d2436;
  --clr-surface:     #222840;
  --clr-surface2:    #2a3354;

  --clr-blue:        #2563eb;
  --clr-blue-mid:    #3b82f6;
  --clr-blue-light:  #60a5fa;
  --clr-blue-glow:   rgba(37,99,235,0.18);
  --clr-blue-border: rgba(59,130,246,0.3);

  --clr-accent:      #38bdf8;
  --clr-accent2:     #818cf8;

  --clr-text:        #e2e8f4;
  --clr-text-muted:  #8896b3;
  --clr-text-faint:  #4e5a78;

  --clr-border:      rgba(255,255,255,0.07);
  --clr-border-mid:  rgba(255,255,255,0.12);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --nav-h: 68px;
  --max-w: 1120px;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* CONTAINER */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,17,23,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--nav-h);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo-g { color: var(--clr-blue-light); }
.logo-eo { color: var(--clr-text); }
.logo-dash { color: var(--clr-text-muted); font-weight: 600; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.15rem;
  margin-left: auto;
  align-items: center;
}

.nav-links > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav-links > li > a:hover {
  color: var(--clr-text);
  background: var(--clr-border);
}
.nav-links .nav-blog {
  color: var(--clr-blue-light);
  border: 1px solid var(--clr-blue-border);
}
.nav-links .nav-blog:hover {
  background: var(--clr-blue-glow);
  color: var(--clr-accent);
}

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--clr-bg2);
  border: 1px solid var(--clr-border-mid);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  min-width: 220px;
  list-style: none;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.has-dropdown:hover .dropdown { display: block; }
.dropdown li a {
  display: block;
  padding: 0.55rem 0.85rem;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.dropdown li a:hover {
  color: var(--clr-text);
  background: var(--clr-border);
}

.chevron { font-size: 0.7rem; opacity: 0.6; }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 0 6rem;
  background: linear-gradient(180deg, var(--clr-bg2) 0%, var(--clr-bg) 100%);
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black, transparent);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.22) 0%, transparent 70%);
  top: -200px; left: -100px;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(56,189,248,0.12) 0%, transparent 70%);
  bottom: -100px; right: 0;
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.12);
  border: 1px solid var(--clr-blue-border);
  color: var(--clr-blue-light);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 99px;
  margin-bottom: 2rem;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--clr-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  margin-bottom: 1.5rem;
}
.hero-title-accent {
  background: linear-gradient(135deg, var(--clr-blue-mid), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--clr-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
  display: block;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--clr-border-mid);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--clr-blue);
  color: #fff;
  border-color: rgba(255,255,255,0.1);
}
.btn-primary:hover {
  background: var(--clr-blue-mid);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(37,99,235,0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border-color: var(--clr-border-mid);
}
.btn-ghost:hover {
  color: var(--clr-text);
  border-color: var(--clr-border-mid);
  background: var(--clr-border);
}
.btn-lg {
  padding: 0.9rem 2.25rem;
  font-size: 1.05rem;
}
.btn-ghost-sm {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.9rem;
  font-size: 0.875rem;
  color: var(--clr-blue-light);
  border: 1px solid var(--clr-blue-border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-ghost-sm:hover {
  background: var(--clr-blue-glow);
  color: var(--clr-accent);
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-blue-light);
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--clr-text);
  margin-bottom: 1rem;
}
.section-lead {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 580px;
  margin-bottom: 3rem;
  line-height: 1.7;
  font-weight: 300;
}

/* ============================================================
   WHAT IS GEO
   ============================================================ */
.what-is-geo {
  padding: 6rem 0;
  background: var(--clr-bg);
}

.geo-compare {
  display: flex;
  gap: 0;
  align-items: stretch;
  margin-top: 3rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border-mid);
}

.compare-card {
  flex: 1;
  padding: 2.5rem;
  position: relative;
}
.compare-seo {
  background: var(--clr-bg2);
}
.compare-geo {
  background: linear-gradient(135deg, var(--clr-bg3), rgba(37,99,235,0.08));
  border-left: 1px solid var(--clr-border-mid);
}

.compare-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
  background: var(--clr-bg2);
  font-size: 1.5rem;
  color: var(--clr-text-faint);
  border-left: 1px solid var(--clr-border);
  border-right: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.compare-icon { font-size: 2rem; margin-bottom: 1rem; }

.compare-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.75rem;
}
.compare-card p {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}
.compare-list li {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  padding-left: 1.25rem;
  position: relative;
}
.compare-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--clr-text-faint);
}
.compare-geo .compare-list li::before {
  color: var(--clr-blue-light);
}

.compare-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
}
.compare-tag-old {
  background: rgba(255,255,255,0.05);
  color: var(--clr-text-faint);
  border: 1px solid var(--clr-border);
}
.compare-tag-new {
  background: rgba(37,99,235,0.15);
  color: var(--clr-blue-light);
  border: 1px solid var(--clr-blue-border);
}

/* ============================================================
   TOPICS GRID
   ============================================================ */
.topics {
  padding: 6rem 0;
  background: var(--clr-bg2);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.topic-card {
  position: relative;
  background: var(--clr-bg3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
  cursor: pointer;
  overflow: hidden;
}
.topic-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.05), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.topic-card:hover {
  border-color: var(--clr-blue-border);
  background: var(--clr-surface);
  transform: translateY(-2px);
}
.topic-card:hover::before { opacity: 1; }

.topic-featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--clr-surface), rgba(37,99,235,0.1));
  border-color: var(--clr-blue-border);
}
@media (max-width: 720px) {
  .topic-featured { grid-column: span 1; }
}

.topic-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-text-faint);
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.topic-icon { font-size: 1.75rem; margin-bottom: 0.25rem; }

.topic-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.25;
}
.topic-featured h3 { font-size: 1.3rem; }

.topic-card p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.topic-link {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-blue-light);
  margin-top: 0.5rem;
  transition: color 0.15s;
}
.topic-card:hover .topic-link { color: var(--clr-accent); }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  padding: 6rem 0;
  background: var(--clr-bg);
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-top: 3rem;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 220px;
  display: flex;
  gap: 1.25rem;
  padding: 2rem;
  background: var(--clr-bg2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
}
.step-connector {
  flex-shrink: 0;
  width: 40px;
  display: flex;
  align-items: flex-start;
  padding-top: 2.8rem;
  justify-content: center;
  color: var(--clr-text-faint);
  font-size: 1.2rem;
}
.step-connector::after { content: '→'; }

.step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--clr-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.5rem;
}
.step-content p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}

/* ============================================================
   LATEST POSTS
   ============================================================ */
.latest-posts {
  padding: 6rem 0;
  background: var(--clr-bg2);
  border-top: 1px solid var(--clr-border);
}

.latest-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.latest-header .section-title { margin-bottom: 0; }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.post-card {
  background: var(--clr-bg3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.post-card:hover {
  border-color: var(--clr-blue-border);
  background: var(--clr-surface);
  transform: translateY(-2px);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.post-cat {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--clr-blue-light);
  background: rgba(37,99,235,0.1);
  border: 1px solid var(--clr-blue-border);
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
}
.post-date {
  font-size: 0.78rem;
  color: var(--clr-text-faint);
}

.post-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.3;
}
.post-card p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  padding: 6rem 0;
  background: var(--clr-bg3);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  overflow: hidden;
}
.cta-inner {
  position: relative;
  text-align: center;
  z-index: 1;
}
.cta-orb {
  position: absolute;
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(37,99,235,0.2) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  filter: blur(60px);
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}
.cta-band p {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--clr-bg);
  padding: 4rem 0 0;
  border-top: 1px solid var(--clr-border);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  padding-bottom: 3rem;
}
.footer-brand p {
  font-size: 0.875rem;
  color: var(--clr-text-faint);
  margin-top: 0.75rem;
  max-width: 240px;
  line-height: 1.6;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  transition: color 0.15s;
}
.footer-col ul li a:hover { color: var(--clr-blue-light); }

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: 1.25rem 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--clr-text-faint);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--clr-bg2);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--clr-border);
    gap: 0.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links > li > a { padding: 0.65rem 0.9rem; }
  .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    background: transparent;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }

  .geo-compare {
    flex-direction: column;
  }
  .compare-arrow {
    padding: 0.75rem;
    transform: rotate(90deg);
    border: none;
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
  }
  .compare-geo { border-left: none; border-top: 1px solid var(--clr-border-mid); }

  .steps { flex-direction: column; }
  .step-connector { display: none; }

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

@media (max-width: 520px) {
  .hero { padding: 4rem 0 4rem; }
  .hero-stats { gap: 1rem; }
  .stat-divider { display: none; }
  .footer-links { grid-template-columns: 1fr; }
}

/* ============================================================
   INNER PAGE STYLES
   ============================================================ */
.page-hero {
  padding: 5rem 0 3.5rem;
  background: linear-gradient(180deg, var(--clr-bg2) 0%, var(--clr-bg) 100%);
  border-bottom: 1px solid var(--clr-border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(37,99,235,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(37,99,235,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black, transparent);
}
.page-hero .container { position: relative; z-index: 1; }
.page-breadcrumb { font-size: 0.8rem; color: var(--clr-text-faint); margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.page-breadcrumb a { color: var(--clr-blue-light); transition: color 0.15s; }
.page-breadcrumb a:hover { color: var(--clr-accent); }
.page-hero h1 { font-family: var(--font-display); font-size: clamp(2rem, 4.5vw, 3.5rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.08; color: var(--clr-text); margin-bottom: 1.25rem; }
.page-hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--clr-blue-mid), var(--clr-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.page-hero-lead { font-size: 1.1rem; color: var(--clr-text-muted); max-width: 680px; line-height: 1.7; font-weight: 300; }
.page-meta { display: flex; align-items: center; gap: 1.25rem; margin-top: 1.75rem; flex-wrap: wrap; }
.page-meta-item { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; color: var(--clr-text-faint); }

.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 3rem; padding: 4rem 0 6rem; align-items: start; }
@media (max-width: 900px) { .article-layout { grid-template-columns: 1fr; } .article-sidebar { display: none; } }

.article-sidebar { position: sticky; top: calc(var(--nav-h) + 1.5rem); }
.toc-box { background: var(--clr-bg2); border: 1px solid var(--clr-border-mid); border-radius: var(--radius-md); padding: 1.5rem; }
.toc-box h4 { font-family: var(--font-display); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--clr-text-faint); margin-bottom: 1rem; }
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.2rem; }
.toc-list li a { display: block; font-size: 0.85rem; color: var(--clr-text-muted); padding: 0.3rem 0.6rem; border-radius: var(--radius-sm); transition: color 0.15s, background 0.15s; line-height: 1.4; }
.toc-list li a:hover { color: var(--clr-blue-light); background: var(--clr-border); }
.toc-list li.sub a { padding-left: 1.25rem; font-size: 0.8rem; }
.toc-cta { margin-top: 1.5rem; background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(56,189,248,0.06)); border: 1px solid var(--clr-blue-border); border-radius: var(--radius-md); padding: 1.25rem; text-align: center; }
.toc-cta p { font-size: 0.82rem; color: var(--clr-text-muted); line-height: 1.5; margin-bottom: 0.75rem; }
.toc-cta a { display: inline-block; font-size: 0.82rem; font-weight: 600; color: var(--clr-blue-light); border: 1px solid var(--clr-blue-border); padding: 0.4rem 0.9rem; border-radius: var(--radius-sm); transition: all 0.2s; }
.toc-cta a:hover { background: var(--clr-blue-glow); color: var(--clr-accent); }

.article-content h2 { font-family: var(--font-display); font-size: 1.65rem; font-weight: 700; letter-spacing: -0.02em; color: var(--clr-text); margin: 2.5rem 0 1rem; padding-top: 0.5rem; border-top: 1px solid var(--clr-border); }
.article-content h2:first-child { margin-top: 0; border-top: none; }
.article-content h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; color: var(--clr-text); margin: 1.75rem 0 0.65rem; }
.article-content p { font-size: 1rem; color: var(--clr-text-muted); line-height: 1.8; margin-bottom: 1.1rem; }
.article-content strong { color: var(--clr-text); font-weight: 600; }
.article-content em { color: var(--clr-blue-light); font-style: normal; }
.article-content ul, .article-content ol { margin: 0.75rem 0 1.25rem 1.5rem; display: flex; flex-direction: column; gap: 0.45rem; }
.article-content li { font-size: 0.97rem; color: var(--clr-text-muted); line-height: 1.7; }
.article-content a { color: var(--clr-blue-light); text-decoration: underline; text-decoration-color: rgba(96,165,250,0.3); transition: color 0.15s; }
.article-content a:hover { color: var(--clr-accent); }

.info-box { background: rgba(37,99,235,0.08); border: 1px solid var(--clr-blue-border); border-left: 3px solid var(--clr-blue); border-radius: var(--radius-md); padding: 1.25rem 1.5rem; margin: 1.5rem 0; }
.info-box.tip { background: rgba(56,189,248,0.07); border-color: rgba(56,189,248,0.25); border-left-color: var(--clr-accent); }
.info-box.warning { background: rgba(251,191,36,0.07); border-color: rgba(251,191,36,0.25); border-left-color: #fbbf24; }
.info-box-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--clr-blue-light); margin-bottom: 0.5rem; display: block; }
.info-box.tip .info-box-label { color: var(--clr-accent); }
.info-box.warning .info-box-label { color: #fbbf24; }
.info-box p { font-size: 0.92rem; color: var(--clr-text-muted); line-height: 1.65; margin: 0; }

.checklist { list-style: none; margin: 0.75rem 0 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.checklist li { display: flex; align-items: flex-start; gap: 0.75rem; font-size: 0.97rem; color: var(--clr-text-muted); line-height: 1.6; }
.checklist li::before { content: '✓'; flex-shrink: 0; width: 20px; height: 20px; background: rgba(37,99,235,0.15); color: var(--clr-blue-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; margin-top: 2px; }

.highlight-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.highlight-card { background: var(--clr-bg2); border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 1.25rem; }
.highlight-card-icon { font-size: 1.5rem; margin-bottom: 0.6rem; }
.highlight-card h4 { font-family: var(--font-display); font-size: 0.95rem; font-weight: 700; color: var(--clr-text); margin-bottom: 0.4rem; }
.highlight-card p { font-size: 0.85rem; color: var(--clr-text-muted); line-height: 1.55; margin: 0; }

.article-content pre { background: var(--clr-bg3); border: 1px solid var(--clr-border-mid); border-radius: var(--radius-md); padding: 1.25rem 1.5rem; overflow-x: auto; margin: 1.25rem 0; }
.article-content code { font-family: 'Fira Mono','Consolas',monospace; font-size: 0.875rem; color: var(--clr-accent); line-height: 1.6; }
.article-content p code { background: var(--clr-bg3); border: 1px solid var(--clr-border); padding: 0.15em 0.45em; border-radius: 4px; font-size: 0.85em; }

.faq-section { padding: 4rem 0 6rem; background: var(--clr-bg2); border-top: 1px solid var(--clr-border); }
.faq-list { display: flex; flex-direction: column; gap: 0; margin-top: 2rem; border: 1px solid var(--clr-border-mid); border-radius: var(--radius-md); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--clr-border); }
.faq-item:last-child { border-bottom: none; }
.faq-question { width: 100%; background: var(--clr-bg3); border: none; text-align: left; padding: 1.25rem 1.5rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 1rem; transition: background 0.2s; }
.faq-question:hover { background: var(--clr-surface); }
.faq-question h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 600; color: var(--clr-text); line-height: 1.35; }
.faq-toggle { flex-shrink: 0; width: 24px; height: 24px; background: var(--clr-border); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; color: var(--clr-text-muted); transition: transform 0.25s, background 0.2s; }
.faq-item.open .faq-toggle { transform: rotate(45deg); background: var(--clr-blue); color: #fff; }
.faq-answer { display: none; padding: 0 1.5rem 1.25rem; background: var(--clr-bg3); }
.faq-item.open .faq-answer { display: block; }
.faq-answer p { font-size: 0.95rem; color: var(--clr-text-muted); line-height: 1.75; margin: 0; }
.faq-answer p + p { margin-top: 0.75rem; }

.related-articles { padding: 4rem 0; background: var(--clr-bg); border-top: 1px solid var(--clr-border); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; margin-top: 2rem; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin: 3rem 0; }
@media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-card, .contact-form-card { background: var(--clr-bg2); border: 1px solid var(--clr-border-mid); border-radius: var(--radius-lg); padding: 2rem; }
.contact-info-card h2, .contact-form-card h2 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--clr-text); margin-bottom: 1.5rem; }
.contact-detail { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.25rem; }
.contact-detail-icon { flex-shrink: 0; width: 36px; height: 36px; background: rgba(37,99,235,0.12); border: 1px solid var(--clr-blue-border); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1rem; }
.contact-detail-text label { display: block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--clr-text-faint); margin-bottom: 0.2rem; }
.contact-detail-text a, .contact-detail-text span { font-size: 0.95rem; color: var(--clr-text); line-height: 1.5; }
.contact-detail-text a { color: var(--clr-blue-light); }
.contact-detail-text a:hover { color: var(--clr-accent); }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 500; color: var(--clr-text-muted); margin-bottom: 0.4rem; }
.form-group input, .form-group textarea { width: 100%; background: var(--clr-bg3); border: 1px solid var(--clr-border-mid); border-radius: var(--radius-sm); padding: 0.7rem 1rem; font-family: var(--font-body); font-size: 0.92rem; color: var(--clr-text); transition: border-color 0.2s; outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--clr-blue); }
.form-group textarea { min-height: 130px; resize: vertical; }
.form-submit { width: 100%; padding: 0.85rem; background: var(--clr-blue); color: #fff; border: none; border-radius: var(--radius-md); font-family: var(--font-display); font-size: 1rem; font-weight: 700; cursor: pointer; transition: background 0.2s, transform 0.15s; }
.form-submit:hover { background: var(--clr-blue-mid); transform: translateY(-1px); }

.sanasto-az { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 2rem 0 3rem; }
.az-link { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: var(--clr-bg2); border: 1px solid var(--clr-border); border-radius: var(--radius-sm); font-family: var(--font-display); font-size: 0.85rem; font-weight: 700; color: var(--clr-text-muted); transition: all 0.15s; }
.az-link:hover, .az-link.active { background: var(--clr-blue); border-color: var(--clr-blue); color: #fff; }
.az-link.disabled { opacity: 0.3; pointer-events: none; }
.sanasto-group { margin-bottom: 3rem; }
.sanasto-group-letter { font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--clr-blue-light); border-bottom: 1px solid var(--clr-border-mid); padding-bottom: 0.5rem; margin-bottom: 1.25rem; }
.sanasto-terms { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0.75rem; }
.sanasto-term-link { display: block; background: var(--clr-bg2); border: 1px solid var(--clr-border); border-radius: var(--radius-md); padding: 1rem 1.25rem; transition: border-color 0.2s, background 0.2s, transform 0.15s; }
.sanasto-term-link:hover { border-color: var(--clr-blue-border); background: var(--clr-surface); transform: translateY(-1px); }
.sanasto-term-link h3 { font-family: var(--font-display); font-size: 0.95rem; font-weight: 700; color: var(--clr-text); margin-bottom: 0.35rem; }
.sanasto-term-link p { font-size: 0.82rem; color: var(--clr-text-muted); line-height: 1.5; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.term-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--clr-border); }
.term-nav a { font-size: 0.875rem; color: var(--clr-blue-light); }
.term-nav a:hover { color: var(--clr-accent); }