/* ============================================
   SAEFUL.COM — SEO Knowledge Hub
   Dark Dev/Terminal Theme — Gradient + Neon
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg: #050510;
  --bg-2: #0a0a18;
  --bg-3: #0f0f20;
  --bg-card: #0d0d1c;
  --line: #1a1a2e;
  --line-2: #252545;
  --text: #e4e4f0;
  --text-2: #9090a8;
  --text-3: #5a5a78;
  --text-4: #3a3a52;

  --neon-cyan: #00f0ff;
  --neon-purple: #b026ff;
  --neon-pink: #ff2e88;
  --neon-green: #39ff7a;
  --neon-orange: #ff9f1c;

  --grad-1: linear-gradient(135deg, #00f0ff 0%, #b026ff 100%);
  --grad-2: linear-gradient(135deg, #b026ff 0%, #ff2e88 100%);
  --grad-3: linear-gradient(135deg, #39ff7a 0%, #00f0ff 100%);

  --display: 'Space Grotesk', sans-serif;
  --sans: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { display: block; max-width: 100%; }
::selection { background: var(--neon-purple); color: white; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 5px;
}

/* Grid + dot pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(0,240,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(176,38,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  top: -300px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(176,38,255,0.18) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: floatBlob 18s ease-in-out infinite;
}
@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-50px, 80px); }
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 16, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0;
}
.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--grad-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 16px;
  font-weight: 700;
  color: var(--bg);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.4);
  position: relative;
}
.logo-mark::after {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--grad-1);
  border-radius: 9px;
  z-index: -1;
  filter: blur(8px);
  opacity: 0.5;
}
.logo-text { color: var(--text); }
.logo-domain { color: var(--neon-cyan); }
.logo-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--neon-cyan);
  margin-left: 2px;
  animation: blink 1.1s infinite;
  vertical-align: middle;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  padding: 7px 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 6px;
  transition: all 0.2s;
  position: relative;
}
.nav-links a::before {
  content: './';
  color: var(--text-4);
  margin-right: 2px;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: rgba(0, 240, 255, 0.06);
}
.nav-links a:hover::before, .nav-links a.active::before {
  color: var(--neon-cyan);
}

.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 12px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  transition: all 0.2s;
  min-width: 220px;
}
.search-trigger:hover {
  border-color: var(--neon-cyan);
  color: var(--text);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}
.search-trigger svg { width: 14px; height: 14px; }
.search-trigger .kbd {
  margin-left: auto;
  font-size: 10px;
  padding: 2px 6px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--grad-1);
  color: var(--bg);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  transition: all 0.2s;
  position: relative;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-1);
  border-radius: 6px;
  filter: blur(12px);
  opacity: 0.6;
  z-index: -1;
  transition: opacity 0.2s;
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-primary:hover::before { opacity: 0.9; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}
.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

/* ===== TERMINAL WINDOW ===== */
.terminal {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 0 60px rgba(0, 240, 255, 0.08);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
}
.terminal-dots { display: flex; gap: 6px; }
.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.terminal-dot.r { background: #ff5f56; }
.terminal-dot.y { background: #ffbd2e; }
.terminal-dot.g { background: #27c93f; }
.terminal-title { flex: 1; text-align: center; }
.terminal-body { padding: 24px; font-family: var(--mono); font-size: 13px; }
.terminal-prompt { color: var(--neon-cyan); margin-right: 8px; }
.terminal-prompt::before { content: '$ '; color: var(--neon-green); }
.terminal-comment { color: var(--text-3); }
.terminal-output { color: var(--text-2); margin: 8px 0 16px 0; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.25s;
  border: 1px solid transparent;
  position: relative;
}
.btn-fill {
  background: var(--grad-1);
  color: var(--bg);
  border: none;
}
.btn-fill::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-1);
  border-radius: 8px;
  filter: blur(16px);
  opacity: 0.5;
  z-index: -1;
  transition: opacity 0.25s;
}
.btn-fill:hover { transform: translateY(-2px); }
.btn-fill:hover::before { opacity: 0.85; }
.btn-outline {
  background: var(--bg-3);
  color: var(--text);
  border-color: var(--line-2);
}
.btn-outline:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.badge.dot::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
}
.badge.cyan { color: var(--neon-cyan); border-color: rgba(0,240,255,0.3); background: rgba(0,240,255,0.06); }
.badge.purple { color: var(--neon-purple); border-color: rgba(176,38,255,0.3); background: rgba(176,38,255,0.06); }
.badge.pink { color: var(--neon-pink); border-color: rgba(255,46,136,0.3); background: rgba(255,46,136,0.06); }
.badge.green { color: var(--neon-green); border-color: rgba(57,255,122,0.3); background: rgba(57,255,122,0.06); }
.badge.orange { color: var(--neon-orange); border-color: rgba(255,159,28,0.3); background: rgba(255,159,28,0.06); }

/* ===== SEARCH MODAL ===== */
.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 100px;
}
.search-modal.open { display: flex; }
.search-box {
  width: 90%;
  max-width: 600px;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,240,255,0.15);
  animation: searchIn 0.2s ease;
}
@keyframes searchIn {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}
.search-input-wrap svg { color: var(--neon-cyan); flex-shrink: 0; }
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 15px;
  font-family: var(--mono);
  outline: none;
}
.search-input::placeholder { color: var(--text-4); }
.search-close {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 8px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text-3);
  cursor: pointer;
}
.search-results { max-height: 400px; overflow-y: auto; padding: 8px; }
.search-result {
  display: block;
  padding: 12px 14px;
  border-radius: 8px;
  transition: background 0.15s;
}
.search-result:hover { background: var(--bg-3); }
.search-result-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}
.search-result-cat {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--neon-cyan);
}
.search-empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 13px;
}

/* ===== HERO (Home) ===== */
.hero {
  padding: 80px 0 60px;
  position: relative;
}
.hero-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background:
    radial-gradient(ellipse at center, rgba(176,38,255,0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 60%, rgba(0,240,255,0.18) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  filter: blur(40px);
}
.hero-content { position: relative; z-index: 1; text-align: center; }

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-2);
  margin-bottom: 32px;
  transition: border-color 0.2s;
}
.hero-pill:hover { border-color: var(--neon-cyan); }
.hero-pill .new {
  padding: 3px 9px;
  background: var(--grad-2);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: 999px;
  letter-spacing: 0.04em;
}
.hero-pill .arrow { color: var(--neon-cyan); }

.hero-title {
  font-family: var(--display);
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  color: var(--text);
}
.hero-title .grad {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  position: relative;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-2);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

/* Terminal preview di hero */
.hero-terminal {
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
  position: relative;
}
.hero-terminal::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 13px;
  z-index: -1;
  filter: blur(12px);
  opacity: 0.4;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-card);
  overflow: hidden;
  max-width: 900px;
  margin: 60px auto 0;
}
.hero-stat {
  padding: 28px;
  border-right: 1px solid var(--line);
  text-align: left;
}
.hero-stat:last-child { border-right: none; }
.hero-stat-num {
  font-family: var(--display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}
.hero-stat-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ===== SECTION ===== */
.section { padding: 80px 0; position: relative; z-index: 1; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 40px;
  gap: 32px;
  flex-wrap: wrap;
}
.section-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--neon-cyan);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--neon-cyan);
}
.section-title {
  font-family: var(--display);
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.section-title .grad {
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-desc {
  font-size: 15px;
  color: var(--text-2);
  max-width: 520px;
  margin-top: 12px;
}
.section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--neon-cyan);
  font-weight: 500;
  transition: all 0.2s;
}
.section-link:hover { gap: 10px; text-shadow: 0 0 8px rgba(0,240,255,0.6); }

/* ===== CARDS ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 1px;
  background: linear-gradient(135deg, transparent, transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: background 0.3s;
  pointer-events: none;
}
.card:hover { transform: translateY(-4px); }
.card:hover::before {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
}
.card-thumb {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-2));
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  display: block;
}
.card-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
  filter: saturate(0.85) contrast(1.1);
}
.card:hover .card-thumb-img { transform: scale(1.06); }
.card-thumb-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5,5,16,0.2) 0%, rgba(5,5,16,0.55) 60%, rgba(5,5,16,0.92) 100%),
    linear-gradient(135deg, rgba(0,240,255,0.10) 0%, transparent 40%, rgba(176,38,255,0.18) 100%);
  z-index: 1;
  transition: opacity 0.3s;
}
.card:hover .card-thumb-overlay { opacity: 0.85; }
.card-thumb-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 2;
  mix-blend-mode: overlay;
}
.card-thumb-num {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 3;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--neon-cyan);
  background: rgba(5,5,16,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 5px 10px;
  border: 1px solid rgba(0,240,255,0.3);
  border-radius: 999px;
  letter-spacing: 0.06em;
}
.card-thumb-mono {
  position: absolute;
  bottom: 14px;
  left: 16px;
  z-index: 3;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--neon-cyan);
  background: rgba(5,5,16,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid rgba(0,240,255,0.15);
}
.card-thumb-mono::before { content: '> '; opacity: 0.6; }

/* Article hero image */
.article-hero-image {
  width: 100%;
  max-width: 1100px;
  aspect-ratio: 21/9;
  margin: 32px auto 0;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--line);
}
.article-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9);
}
.article-hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(5,5,16,0.4) 100%);
  pointer-events: none;
}

.card-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
}
.card-title {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  color: var(--text);
}
.card-title a:hover {
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.card-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}
.card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.card-author {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
}
.card-arrow {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.2s;
}
.card:hover .card-arrow {
  background: var(--grad-1);
  border-color: transparent;
  color: var(--bg);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
}

/* ===== FEATURE GRID ===== */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feature {
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.feature::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature:hover { border-color: var(--line-2); }
.feature:hover::after { opacity: 1; }
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
}
.feature h3 {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.feature p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ===== CTA BLOCK ===== */
.cta-block {
  margin: 60px 0 0;
  padding: 60px;
  background:
    radial-gradient(ellipse at top left, rgba(0,240,255,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(176,38,255,0.18) 0%, transparent 60%),
    var(--bg-card);
  border: 1px solid var(--line-2);
  border-radius: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-block h2 {
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.1;
}
.cta-block p {
  font-size: 16px;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto 28px;
}
.cta-form {
  display: flex;
  max-width: 440px;
  margin: 0 auto;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px;
}
.cta-form input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 10px 14px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  outline: none;
}
.cta-form input::placeholder { color: var(--text-4); }
.cta-form button {
  padding: 10px 18px;
  background: var(--grad-1);
  color: var(--bg);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  transition: all 0.2s;
}
.cta-form button:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0,240,255,0.3); }

/* ===== ARTICLE PAGE ===== */
.article-hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 32px;
}
.breadcrumb a:hover { color: var(--neon-cyan); }
.breadcrumb span { color: var(--text-4); }

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.article-title {
  font-family: var(--display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 800px;
}
.article-lede {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 720px;
  margin-bottom: 32px;
}
.article-byline {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.article-author {
  display: flex;
  align-items: center;
  gap: 10px;
}
.article-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 14px;
  font-weight: 700;
  color: var(--bg);
  box-shadow: 0 0 16px rgba(0,240,255,0.3);
}
.article-author-name { font-size: 14px; font-weight: 500; }
.article-author-meta { font-family: var(--mono); font-size: 11px; color: var(--text-3); }
.article-byline-divider { width: 1px; height: 24px; background: var(--line); }
.article-stats {
  display: flex;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
}
.article-stats span { display: inline-flex; align-items: center; gap: 4px; }

.article-body {
  padding: 60px 0;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 240px;
  gap: 60px;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}
.article-toc {
  position: sticky;
  top: 90px;
  align-self: start;
  font-family: var(--mono);
  font-size: 12px;
}
.article-toc-title {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--neon-cyan);
  margin-bottom: 16px;
  font-size: 11px;
}
.article-toc-title::before { content: '// '; opacity: 0.6; }
.article-toc ul { list-style: none; border-left: 1px solid var(--line); }
.article-toc a {
  display: block;
  padding: 7px 14px;
  color: var(--text-3);
  border-left: 1px solid transparent;
  margin-left: -1px;
  transition: all 0.2s;
  line-height: 1.4;
}
.article-toc a:hover { color: var(--text-2); }
.article-toc a.active {
  color: var(--neon-cyan);
  border-left-color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0,240,255,0.4);
}

.article-content {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-2);
  max-width: 680px;
}
.article-content h2 {
  font-family: var(--display);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 48px 0 16px;
  scroll-margin-top: 90px;
  line-height: 1.2;
  position: relative;
  padding-left: 18px;
}
.article-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--grad-1);
  border-radius: 2px;
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-family: var(--display);
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  margin: 32px 0 12px;
  scroll-margin-top: 90px;
  line-height: 1.3;
}
.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; padding-left: 0; }
.article-content li { margin-bottom: 8px; }
.article-content strong { color: var(--text); font-weight: 600; }
.article-content code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 2px 7px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 4px;
  color: var(--neon-cyan);
}
.article-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--neon-purple);
  background: rgba(176, 38, 255, 0.06);
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text);
  position: relative;
}
.article-content a:not(.btn) {
  color: var(--neon-cyan);
  border-bottom: 1px solid rgba(0, 240, 255, 0.3);
  transition: all 0.2s;
}
.article-content a:not(.btn):hover {
  text-shadow: 0 0 8px rgba(0,240,255,0.5);
  border-bottom-color: var(--neon-cyan);
}
.article-content .callout {
  margin: 28px 0;
  padding: 20px 24px;
  background: rgba(176, 38, 255, 0.06);
  border: 1px solid rgba(176, 38, 255, 0.25);
  border-radius: 12px;
  font-style: normal;
  position: relative;
}
.article-content .callout::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  padding: 1px;
  background: linear-gradient(135deg, var(--neon-purple), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.article-content .callout-title {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--neon-purple);
  margin-bottom: 8px;
}
.article-content pre {
  margin: 24px 0;
  padding: 20px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-2);
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

.article-aside { position: sticky; top: 90px; align-self: start; }
.aside-card {
  padding: 22px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 16px;
}
.aside-card h4 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--neon-cyan);
  margin-bottom: 14px;
}
.aside-card h4::before { content: '// '; opacity: 0.6; }
.aside-share { display: flex; gap: 8px; }
.aside-share a {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: all 0.2s;
}
.aside-share a:hover {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.1);
}
.aside-related a {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.4;
  transition: color 0.2s;
}
.aside-related a:last-child { border-bottom: none; }
.aside-related a:hover { color: var(--neon-cyan); }

.article-nav {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.article-nav a {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-card);
  transition: all 0.2s;
  display: block;
}
.article-nav a:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.06);
}
.article-nav-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--neon-cyan);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-nav-title {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.article-nav .next { text-align: right; }
.article-nav .next .article-nav-label { justify-content: flex-end; }

/* ===== CATEGORY/LIST PAGE ===== */
.list-hero {
  padding: 80px 0 40px;
  text-align: center;
  position: relative;
}
.cat-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 40px auto;
  padding: 6px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 10px;
  max-width: fit-content;
}
.cat-tab {
  padding: 8px 16px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  border-radius: 6px;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  background: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cat-tab:hover { color: var(--text); background: var(--bg-3); }
.cat-tab.active {
  background: var(--grad-1);
  color: var(--bg);
}
.cat-tab .count {
  font-size: 10px;
  padding: 1px 6px;
  background: var(--bg);
  border-radius: 999px;
  color: var(--text-3);
}
.cat-tab.active .count { background: rgba(0,0,0,0.2); color: var(--bg); }

/* ===== ABOUT PAGE ===== */
.about-hero {
  padding: 100px 0 40px;
  text-align: center;
  position: relative;
}
.about-portrait {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: var(--grad-1);
  margin: 0 auto 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 52px;
  font-weight: 700;
  color: var(--bg);
  box-shadow: 0 0 80px rgba(0,240,255,0.4);
  position: relative;
}
.about-portrait::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--grad-1);
  z-index: -1;
  filter: blur(20px);
  opacity: 0.5;
}

.skills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}
.skill {
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  transition: all 0.2s;
}
.skill:hover { border-color: var(--neon-cyan); }
.skill-icon {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: rgba(0,240,255,0.08);
  border: 1px solid rgba(0,240,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}
.skill-name { font-weight: 500; }
.skill-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  margin-left: auto;
}

.timeline { margin: 40px 0; }
.timeline-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: 102px;
  top: 30px;
  width: 8px;
  height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--neon-cyan);
}
.timeline-year {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--neon-cyan);
}
.timeline h4 {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.timeline p { color: var(--text-2); font-size: 14px; }

/* ===== CONTACT PAGE ===== */
.contact-hero {
  padding: 100px 0 40px;
  text-align: center;
  position: relative;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding-bottom: 80px;
}
.contact-info-card {
  padding: 22px 24px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s;
}
.contact-info-card:hover {
  border-color: var(--neon-cyan);
  transform: translateX(4px);
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0,240,255,0.08);
  border: 1px solid rgba(0,240,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  flex-shrink: 0;
}
.contact-info-content { flex: 1; }
.contact-info-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.contact-info-value { font-size: 15px; font-weight: 500; font-family: var(--mono); }

.contact-form {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  position: relative;
}
.contact-form::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.form-field label::before { content: '> '; color: var(--neon-cyan); }
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  outline: none;
  transition: all 0.2s;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.1);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--grad-1);
  color: var(--bg);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,240,255,0.3); }

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  margin-top: 100px;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 32px 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 50px;
}
.footer-brand {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-about {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 24px;
}
.footer-socials { display: flex; gap: 8px; }
.footer-social {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.2s;
}
.footer-social:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0,240,255,0.08);
}
.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--neon-cyan);
  margin-bottom: 18px;
}
.footer-col h4::before { content: '// '; opacity: 0.6; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--neon-cyan); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== FAB CHAT ===== */
.fab-chat {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
  z-index: 90;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.fab-chat:hover { transform: scale(1.08); }
.fab-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #25D366;
  animation: fabPulse 2.2s ease-out infinite;
  z-index: -1;
}
@keyframes fabPulse {
  0% { transform: scale(1); opacity: 0.55; }
  80%, 100% { transform: scale(1.7); opacity: 0; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .article-body { grid-template-columns: 1fr; gap: 40px; padding: 40px 32px; }
  .article-toc, .article-aside { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .search-trigger { min-width: 0; padding: 8px 10px; }
  .search-trigger .kbd, .search-trigger > span:not(.kbd) { display: none; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(2) { border-right: none; }
  .hero-stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .container, .container-narrow { padding: 0 20px; }
  .nav { padding: 14px 20px; }
  .cta-block { padding: 40px 24px; }
  .article-nav { grid-template-columns: 1fr; padding: 32px 20px; }
  .article-nav .next { text-align: left; }
  .article-nav .next .article-nav-label { justify-content: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
  .timeline-item::before { display: none; }
  .skills { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
  .hero { padding: 50px 0 40px; }
  .section { padding: 60px 0; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .terminal-body { padding: 16px; font-size: 12px; }
}