/* ========================================
   coviAI - Global Design System
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&display=swap');

/* --- CSS Variables --- */
:root {
  --color-main: #00ceff;
  --color-sub1: #425ccf;
  --color-sub2: #1945cc;
  --color-accent: #7b5cf0;
  --bg-dark: #070b18;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(0, 151, 241, 0.08);
  --border-color: rgba(255, 255, 255, 0.2);
  --border-glow: rgba(0, 151, 241, 0.3);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.4);
  --gradient-main: linear-gradient(135deg, #0097f1 0%, #425ccf 50%, #7b5cf0 100%);
  --gradient-bg: linear-gradient(160deg, #070b18 0%, #0d1630 50%, #070b18 100%);
  --font-family: Arial, 'Noto Sans KR', 'Malgun Gothic', '맑은 고딕', dotum, '돋움', sans-serif;
  --section-padding: 120px 0;
  --container-max: 1200px;
  --radius-card: 16px;
  --radius-sm: 8px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; font-family: inherit; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: var(--section-padding); position: relative; overflow: hidden; }

/* --- Gradient Text --- */
.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section Title --- */
.section-title {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.8;
}
.section-label {
  display: inline-block;
  font-size: 20px;
  font-weight: 500;
  color: var(--primary-main);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 4px 20px 2px 25px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  background: var(--gradient-main);
  letter-spacing: 0.15em;
}

/* --- Scroll Animation --- */
.fade-up {
  opacity: 0;
  transform: translateY(48px);
  transition: opacity 0.75s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.75s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }
.fade-up.delay-5 { transition-delay: 0.5s; }

/* ========================================
   SECTION 1 — HERO
   ======================================== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: var(--gradient-bg);
  overflow: hidden;
  padding-top: 68px;
}
/* Animated background mesh */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(0, 151, 241, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 70%, rgba(123, 92, 240, 0.1) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(66, 92, 207, 0.1) 0%, transparent 65%);
  pointer-events: none;
}
/* Grid overlay */
.hero-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 151, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 151, 241, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Floating particles */
.particles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.particle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-main), transparent);
  animation: float-particle linear infinite;
  opacity: 0.4;
}
.particle:nth-child(1)  { width:4px;  height:4px;  left:10%;  animation-duration:18s; animation-delay:0s;    top:80%; }
.particle:nth-child(2)  { width:6px;  height:6px;  left:25%;  animation-duration:22s; animation-delay:-4s;   top:90%; background:radial-gradient(circle, var(--color-sub1), transparent); }
.particle:nth-child(3)  { width:3px;  height:3px;  left:40%;  animation-duration:16s; animation-delay:-8s;   top:85%; }
.particle:nth-child(4)  { width:5px;  height:5px;  left:55%;  animation-duration:20s; animation-delay:-2s;   top:95%; background:radial-gradient(circle, var(--color-accent), transparent); }
.particle:nth-child(5)  { width:4px;  height:4px;  left:70%;  animation-duration:24s; animation-delay:-6s;   top:88%; }
.particle:nth-child(6)  { width:7px;  height:7px;  left:80%;  animation-duration:19s; animation-delay:-10s;  top:92%; background:radial-gradient(circle, var(--color-sub1), transparent); }
.particle:nth-child(7)  { width:3px;  height:3px;  left:5%;   animation-duration:21s; animation-delay:-14s;  top:78%; }
.particle:nth-child(8)  { width:5px;  height:5px;  left:90%;  animation-duration:17s; animation-delay:-3s;   top:86%; background:radial-gradient(circle, var(--color-accent), transparent); }

@keyframes float-particle {
  0%   { transform: translateY(0) translateX(0) scale(1); opacity: 0.4; }
  50%  { opacity: 0.7; transform: translateY(-50vh) translateX(20px) scale(1.3); }
  100% { transform: translateY(-100vh) translateX(-10px) scale(0.8); opacity: 0; }
}

.hero-content { position: relative; z-index: 2; }
.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--color-main);
  text-transform: uppercase;
  padding: 6px 18px 5px;
  border-radius: 100px;
  background: rgba(0, 151, 241, 0.08);
  backdrop-filter: blur(8px);
}
.hero-title {
  font-size: clamp(56px, 10vw, 140px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 28px;
  background: linear-gradient(135deg, #ffffff 20%, #90c7f5 70%, #a894f8 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 50px;
  word-break: keep-all;
}
.hero-cta-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  padding: 6px 30px;
  background: var(--gradient-main);
  border-radius: 100px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(0, 151, 241, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0, 151, 241, 0.5); }
.btn-outline {
  padding: 16px 40px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.btn-outline:hover { border-color: var(--color-main); color: var(--color-main); transform: translateY(-2px); }

/* Scroll indicator */
.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  z-index: 2;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--color-main));
  animation: scroll-bounce 1.8s ease-in-out infinite;
}
@keyframes scroll-bounce {
  0%, 100% { transform: scaleY(0.5); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ========================================
   SECTION 2 — FEATURES
   ======================================== */
.features-section {
  background: linear-gradient(180deg, #070b18 0%, #0a0f22 50%, #070b18 100%);
  padding: var(--section-padding);
}
.features-header { text-align: center; margin-bottom: 72px; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 3D CSS Icons */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 48px 36px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--border-glow); background: var(--bg-card-hover); transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0, 151, 241, 0.12); }
.feature-card:hover::before { opacity: 1; }

.feature-icon-wrap {
  width: 220px; height: 220px;
  margin: 0 auto 32px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}


.feature-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.feature-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  word-break: keep-all;
}

/* ========================================
   SECTION 3 — AI AGENT
   ======================================== */
.agent-section {
  background: var(--gradient-bg);
  padding: var(--section-padding);
}
.agent-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 50%, rgba(66,92,207,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.agent-header { text-align: center; margin-bottom: 70px; }

/* Tabs */
.agent-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.tab-btn {
  padding: 13px 30px;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: var(--transition);
  cursor: pointer;
  backdrop-filter: blur(8px);
}
.tab-btn:hover { border-color: var(--border-glow); color: var(--color-main); }
.tab-btn.active {
  background: var(--gradient-main);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 151, 241, 0.35);
}

/* Tab Content */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.agent-content-wrap {
  display: grid;
  grid-template-columns: 1fr 0.6fr;
  gap: 50px;
  align-items: center;
}

.agent-text-col .tab-tagline {
  font-size: clamp(28px, 2.8vw, 32px);
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 32px;
  word-break: keep-all;
  padding-left:40px;
}
.agent-feature-list { display: flex; flex-direction: column; gap: 14px; }
.agent-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 20px;
  color: var(--text-secondary);
  padding-left:40px;
}
.agent-feature-item .check {
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(0,151,241,0.8);
  border: 1px solid var(--border-glow);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 7px;
  font-size: 11px; color: var(--text-primary);
}

/* ========================================
   SECTION 4 — NOTEBOOK
   ======================================== */
.notebook-section {
  background: linear-gradient(180deg, #070b18 0%, #09102a 50%, #070b18 100%);
  padding: var(--section-padding);
}
.notebook-grid {
  display: grid;
  grid-template-columns: repeat(1, 3fr);
  gap: 150px;
}
.notebook-card {
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: row;
  padding:10px;
  border-radius:10px;
}
.notebook-card:hover { border-color: var(--border-glow); transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0, 151, 241, 0.12); }

.notebook-feature-item .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-main);
  flex-shrink: 0;
  margin-top: 12px;
  box-shadow: 0 0 8px rgba(0,151,241,0.7);
}

.notebook-card-visual {
  width:650px;
  height:auto;
  position: relative;
  padding-top:50px;
}

.notebook-card-body { padding:50px; flex: 1; }
.notebook-card-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 25px;
  word-break: keep-all;
}
.notebook-feature-list { display: flex; flex-direction: column; gap: 10px; }
.notebook-feature-item {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 18px; color: var(--text-secondary); line-height: 1.6; word-break: keep-all;
}

/* ========================================
   SECTION 5 — AI 관제
   ======================================== */
.monitor-section {
  background: var(--gradient-bg);
  padding: var(--section-padding);
}
.monitor-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 60%, rgba(25,69,204,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.monitor-header { text-align: center; margin-bottom: 20px; }
.monitor-subtext { text-align: center; font-size: 18px; color: var(--text-primary); max-width: 620px; margin: 0 auto 64px; line-height: 1.8; word-break: keep-all; }

.monitor-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
/* Flow connector line */
.monitor-flow::before {
  content: '';
  position: absolute;
  top: 60px;
  left: calc(16.66% + 12px);
  right: calc(16.66% + 12px);
  height: 1px;
  background: linear-gradient(90deg, var(--border-glow), var(--color-sub1), var(--border-glow));
  z-index: 0;
}

.monitor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 36px 28px 32px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  z-index: 1;
}
.monitor-card:hover { border-color: var(--border-glow); background: var(--bg-card-hover); box-shadow: 0 16px 48px rgba(0,151,241,0.1); }

.monitor-step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 900; color: #fff;
  margin: 0 auto 24px;
  box-shadow: 0 8px 24px rgba(0,151,241,0.4);
}
/* Mini email mockup inside card */
.monitor-mini-mail {
  background: rgba(13,20,45,0.9);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 20px;
  min-height:210px;
}
.monitor-mini-bar {
  padding: 8px 12px;
  background: rgba(0,0,0,0.3);
  display: flex; align-items: center; gap: 6px;
  border-bottom: 1px solid var(--border-color);
  font-size: 10px; color: var(--text-muted);
}
.monitor-mini-body { padding: 12px; }
.security-score {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px;
}
.score-bar { flex: 1; height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.score-fill { height: 100%; border-radius: 2px; background: var(--gradient-main); }
.score-label { font-size: 10px; color: var(--text-muted); white-space: nowrap; }
.threat-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--text-secondary);
  padding: 5px 0;
  border-bottom: 1px solid var(--border-color);
}
.threat-item:last-child { border-bottom: none; }
.threat-level {
  font-size: 9px; padding: 2px 6px; border-radius: 3px; font-weight: 700; white-space: nowrap;
}

/* Action card mockup */
.action-list { display: flex; flex-direction: column; gap: 8px; min-height:210px;}
.action-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  font-size: 11px; color: var(--text-secondary);
  text-align: left;
}
.action-icon { font-size: 14px; }
.action-btn {
  margin-left: auto;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.action-btn.done { background: rgba(40,202,65,0.15); color: #28ca41; }
.action-btn.todo { background: rgba(0,151,241,0.15); color: var(--color-main); }

.monitor-card-title { font-size: 28px; font-weight: 800; margin-bottom: 10px; line-height: 1.4; }
.monitor-card-desc { font-size: 18px; color: var(--text-secondary); line-height: 1.7; word-break: keep-all; }

/* Arrow between cards */
.monitor-arrow {
  position: absolute;
  top: 50px;
  font-size: 20px;
  color: var(--color-main);
  z-index: 2;
}

/* ========================================
   SECTION 6 — FAQ
   ======================================== */
.faq-section {
  background: linear-gradient(180deg, #070b18 0%, #0a0f22 50%, #070b18 100%);
  padding: var(--section-padding);
}
.faq-header { text-align: center; margin-bottom: 64px; }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-glow); }
.faq-item.open { border-color: var(--border-glow); background: rgba(0,151,241,0.04); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  cursor: pointer;
  gap: 16px;
}
.faq-q-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  word-break: keep-all;
}
.faq-icon {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-glow);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-main);
  font-size: 16px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon { background: var(--color-main); color: #fff; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-answer-inner {
  padding: 0 28px 24px;
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  word-break: keep-all;
}
.faq-item.open .faq-answer { max-height: 200px; }

/* ========================================
   SECTION 7 — LAB / 실험실
   ======================================== */
.lab-section {
  background: var(--gradient-bg);
  padding: var(--section-padding);
}
.lab-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(123,92,240,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.lab-header { text-align: center; margin-bottom: 64px; }
.lab-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 880px;
  margin: 0 auto;
}
.lab-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 44px 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.lab-card:hover { border-color: var(--border-glow); transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0,151,241,0.12); }
.lab-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-main);
  opacity: 0;
  transition: var(--transition);
}
.lab-card:hover::before { opacity: 1; }

.lab-badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  vertical-align: middle;
}
.lab-badge.new { background: linear-gradient(135deg, var(--color-main), var(--color-sub1)); color: #fff; }
.lab-badge.soon { background: rgba(123,92,240,0.15); border: 1px solid rgba(123,92,240,0.3); color: var(--color-accent); }

.lab-icon {
  width: 60px; height: 60px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}
.lab-icon.ai-mic { background: linear-gradient(135deg, rgba(0,151,241,0.2), rgba(66,92,207,0.15)); border: 1px solid var(--border-glow); }
.lab-icon.coming { background: rgba(123,92,240,0.1); border: 1px solid rgba(123,92,240,0.2); }

.lab-title { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
.lab-desc { font-size: 18px; color: var(--text-secondary); line-height: 1.8; word-break: keep-all; }

/* Coming soon overlay */
.lab-coming-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7,11,24,0.7);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.coming-soon-text {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}
.coming-soon-sub { font-size: 18px; color: var(--text-primary); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1200px) {
  .container { padding: 0 28px; }
  :root { --section-padding: 90px 0; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .agent-content-wrap { grid-template-columns: 1fr; gap: 36px; justify-items: center;}
  .agent-text-col .tab-tagline {text-align: center; padding-left:0;}
  .notebook-grid { grid-template-columns: repeat(1, 3fr); }
  .notebook-card {flex-direction: column;}
  .notebook-card-visual {width:100%; padding:10px;}
  .monitor-flow { grid-template-columns: 1fr; gap: 20px; }
  .monitor-flow::before { display: none; }
  .lab-grid { grid-template-columns: 1fr; max-width: 480px; }
  .header-nav { display: none; }
}

@media (max-width: 767px) {
  .container { padding: 0 20px; }
  :root { --section-padding: 72px 0; }

  .features-grid { grid-template-columns: 1fr; }
  .notebook-grid { grid-template-columns: 1fr; }
  .notebook-card-body {padding:0;}
  .hero-cta-group { flex-direction: column; align-items: center; }
  .tab-btn { padding: 10px 18px; font-size: 13px; }
  .agent-tabs { gap: 8px; }
  .lab-grid { grid-template-columns: 1fr; max-width: 100%; }
  .faq-question { padding: 20px; }
  .faq-answer-inner { padding: 0 20px 20px; }
  .site-header { padding: 0 20px; }
}