/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-50: #f9f9f9;
  --gray-100: #f2f2f2;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --accent: #1a1a1a;
  --accent-blue: #2563eb;
  --accent-blue-light: #dbeafe;
  --accent-green: #16a34a;
  --accent-green-light: #dcfce7;
  --accent-red: #dc2626;
  --accent-red-light: #fee2e2;
  --accent-yellow: #ca8a04;
  --accent-yellow-light: #fef9c3;
  --accent-purple: #7c3aed;
  --accent-purple-light: #ede9fe;
  --border: #e5e5e5;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.1), 0 4px 12px rgba(0,0,0,.06);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--black);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--black); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--gray-600);
  font-size: 0.92rem;
  font-weight: 500;
  transition: all .15s ease;
}
.nav-links a:hover { background: var(--gray-100); color: var(--black); }
.nav-links a.active { background: var(--black); color: var(--white); }
.nav-cta {
  background: var(--black);
  color: var(--white) !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  transition: opacity .15s ease !important;
}
.nav-cta:hover { opacity: 0.8; background: var(--black) !important; color: var(--white) !important; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: all .2s ease;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .18s ease;
  line-height: 1;
}
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: var(--gray-800); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--black); border-color: var(--gray-300); }
.btn-outline:hover { border-color: var(--black); transform: translateY(-1px); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius-md); }
.btn-sm { padding: 8px 18px; font-size: 0.86rem; }

/* ===== Hero Section ===== */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -60px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(37,99,235,.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--accent-blue-light);
  color: var(--accent-blue);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: var(--black);
  margin-bottom: 24px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent-blue) 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--gray-500);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.75;
}
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-stat-num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--black);
  display: block;
}
.hero-stat-label { font-size: 0.85rem; color: var(--gray-500); margin-top: 2px; }

/* ===== Section Commons ===== */
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-alt { background: var(--gray-50); }
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--black);
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 520px;
  line-height: 1.7;
}
.section-header { margin-bottom: 56px; }
.section-header.center { text-align: center; }
.section-header.center .section-subtitle { margin: 0 auto; }

/* ===== Cards ===== */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-grid { display: grid; gap: 24px; }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ===== Icon Box ===== */
.icon-box {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
  flex-shrink: 0;
}
.icon-box-blue { background: var(--accent-blue-light); }
.icon-box-green { background: var(--accent-green-light); }
.icon-box-purple { background: var(--accent-purple-light); }
.icon-box-yellow { background: var(--accent-yellow-light); }
.icon-box-red { background: var(--accent-red-light); }

/* ===== Why Section ===== */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-card { padding: 28px 24px; }
.why-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.02em; }
.why-card p { font-size: 0.9rem; color: var(--gray-500); line-height: 1.7; }

.problem-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.problem-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.95rem; color: var(--gray-700);
}
.problem-list li::before {
  content: '✕';
  color: var(--accent-red);
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 2px;
  flex-shrink: 0;
}
.solution-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.solution-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.95rem; color: var(--gray-700);
}
.solution-list li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 2px;
  flex-shrink: 0;
}

/* ===== Step Bar ===== */
.steps { display: flex; flex-direction: column; gap: 0; }
.step-item {
  display: flex; gap: 20px;
  position: relative;
  padding-bottom: 32px;
}
.step-item:last-child { padding-bottom: 0; }
.step-left { display: flex; flex-direction: column; align-items: center; }
.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--black);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.9rem;
  flex-shrink: 0;
}
.step-line {
  width: 2px;
  flex: 1;
  background: var(--gray-200);
  margin-top: 8px;
}
.step-item:last-child .step-line { display: none; }
.step-content { padding-top: 8px; }
.step-content h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.02em; }
.step-content p { font-size: 0.9rem; color: var(--gray-500); line-height: 1.65; }

/* ===== Diagnosis Form ===== */
.form-section { padding: 80px 0; }
.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 52px 56px;
  box-shadow: var(--shadow-md);
}
.form-group { margin-bottom: 28px; }
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.form-label span { color: var(--accent-red); margin-left: 3px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--black);
  background: var(--white);
  transition: border-color .15s ease, box-shadow .15s ease;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--black);
  box-shadow: 0 0 0 3px rgba(0,0,0,.06);
}
.form-textarea { resize: vertical; min-height: 110px; line-height: 1.6; }
.form-hint { font-size: 0.8rem; color: var(--gray-400); margin-top: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--black);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.form-section-desc { font-size: .85rem; color: var(--gray-500); margin-top: -16px; margin-bottom: 20px; line-height: 1.65; }
.form-section-divider { height: 1px; background: var(--gray-100); margin: 32px 0; }

/* Checkbox group */
.checkbox-group { display: flex; flex-direction: column; gap: 10px; }
.checkbox-item { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.checkbox-item input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--black);
  cursor: pointer;
  border-radius: 4px;
}
.checkbox-item label { font-size: 0.9rem; color: var(--gray-700); cursor: pointer; }

.radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-item { position: relative; }
.radio-item input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.radio-item label {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border: 1.5px solid var(--gray-200);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .15s ease;
  user-select: none;
}
.radio-item input[type="radio"]:checked + label {
  border-color: var(--black);
  background: var(--black);
  color: var(--white);
}
.radio-item label:hover { border-color: var(--gray-400); }

/* Form submit */
.form-submit-area {
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.form-submit-note { font-size: 0.82rem; color: var(--gray-400); display: flex; align-items: center; gap: 6px; }

/* Progress bar */
.form-progress { margin-bottom: 40px; }
.form-progress-bar { height: 4px; background: var(--gray-200); border-radius: 4px; overflow: hidden; }
.form-progress-fill {
  height: 100%;
  background: var(--black);
  border-radius: 4px;
  transition: width .4s ease;
}
.form-progress-steps {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}
.form-progress-step-label { font-size: 0.78rem; color: var(--gray-400); font-weight: 500; }
.form-progress-step-label.active { color: var(--black); font-weight: 700; }

/* ===== Report Page ===== */
.report-header {
  background: var(--black);
  color: var(--white);
  padding: 60px 0 50px;
}
.report-header-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.report-company { font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,.5); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; }
.report-title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.2; margin-bottom: 14px; }
.report-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.report-meta-tag {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.8);
}

.score-ring-wrap { text-align: center; flex-shrink: 0; }
.score-ring {
  width: 140px; height: 140px;
  position: relative;
}
.score-ring svg { transform: rotate(-90deg); }
.score-ring-bg { fill: none; stroke: rgba(255,255,255,.1); stroke-width: 10; }
.score-ring-fill { fill: none; stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.score-ring-text {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  text-align: center;
}
.score-ring-num { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.05em; display: block; }
.score-ring-label { font-size: 0.75rem; color: rgba(255,255,255,.55); margin-top: 2px; font-weight: 500; }
.score-grade { font-size: 0.9rem; font-weight: 700; margin-top: 10px; }

/* Report body */
.report-body { padding: 52px 0; }
.report-grid { display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start; }
.report-main { display: flex; flex-direction: column; gap: 28px; }
.report-sidebar { display: flex; flex-direction: column; gap: 20px; }

/* Score cards */
.score-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.score-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
}
.score-card-label { font-size: 0.8rem; font-weight: 600; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.score-card-value { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.04em; }
.score-card-bar { height: 4px; background: var(--gray-200); border-radius: 4px; margin-top: 12px; overflow: hidden; }
.score-card-bar-fill { height: 100%; border-radius: 4px; }
.score-card-desc { font-size: 0.8rem; color: var(--gray-500); margin-top: 6px; }

/* Category scores */
.category-list { display: flex; flex-direction: column; gap: 16px; }
.category-item {}
.category-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.category-name { font-size: 0.9rem; font-weight: 600; color: var(--gray-800); }
.category-score { font-size: 0.9rem; font-weight: 700; }
.category-bar { height: 8px; background: var(--gray-100); border-radius: 8px; overflow: hidden; }
.category-bar-fill { height: 100%; border-radius: 8px; transition: width 1.2s ease; }
.category-detail { font-size: 0.8rem; color: var(--gray-400); margin-top: 4px; }

/* Findings */
.findings-list { display: flex; flex-direction: column; gap: 12px; }
.finding-item {
  display: flex; gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  align-items: flex-start;
}
.finding-icon { font-size: 1.1rem; margin-top: 1px; flex-shrink: 0; }
.finding-content {}
.finding-title { font-size: 0.88rem; font-weight: 700; color: var(--black); margin-bottom: 3px; }
.finding-desc { font-size: 0.82rem; color: var(--gray-500); line-height: 1.6; }
.finding-critical { background: #fff5f5; border-color: #fecaca; }
.finding-warning { background: #fffbeb; border-color: #fde68a; }
.finding-ok { background: #f0fdf4; border-color: #bbf7d0; }

/* Recommendations */
.rec-list { display: flex; flex-direction: column; gap: 18px; }
.rec-item {
  padding: 22px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.rec-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.rec-title { font-size: 0.95rem; font-weight: 700; color: var(--black); letter-spacing: -0.01em; }
.rec-priority {
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}
.rec-priority-high { background: var(--accent-red-light); color: var(--accent-red); }
.rec-priority-medium { background: var(--accent-yellow-light); color: var(--accent-yellow); }
.rec-priority-low { background: var(--accent-green-light); color: var(--accent-green); }
.rec-desc { font-size: 0.86rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 12px; }
.rec-steps { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.rec-steps li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.83rem; color: var(--gray-600);
}
.rec-steps li::before { content: '→'; color: var(--gray-400); flex-shrink: 0; }

/* Sidebar widgets */
.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
}
.sidebar-widget-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  margin-bottom: 16px;
}
.quick-wins { display: flex; flex-direction: column; gap: 10px; }
.quick-win-item {
  display: flex; gap: 10px; align-items: flex-start;
}
.quick-win-badge {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--black); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.68rem; font-weight: 700;
  flex-shrink: 0; margin-top: 1px;
}
.quick-win-text { font-size: 0.82rem; color: var(--gray-600); line-height: 1.55; }

.benchmark-list { display: flex; flex-direction: column; gap: 12px; }
.benchmark-item {}
.benchmark-label { font-size: 0.8rem; font-weight: 600; color: var(--gray-600); margin-bottom: 4px; display: flex; justify-content: space-between; }
.benchmark-bar { height: 6px; background: var(--gray-100); border-radius: 6px; overflow: hidden; position: relative; }
.benchmark-bar-you { height: 100%; border-radius: 6px; background: var(--black); }
.benchmark-bar-avg {
  position: absolute;
  top: -2px; height: 10px; width: 2px;
  background: var(--accent-blue);
  border-radius: 2px;
}

/* Action CTA box */
.action-box {
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.action-box h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.02em; }
.action-box p { font-size: 0.82rem; color: rgba(255,255,255,.6); margin-bottom: 18px; line-height: 1.6; }
.btn-white {
  background: var(--white);
  color: var(--black);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: opacity .15s ease;
}
.btn-white:hover { opacity: .85; }

/* Report badge strip */
.badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.badge {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--gray-600);
  background: var(--gray-50);
}

/* Report print footer */
.report-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.report-footer-brand { font-size: 0.88rem; font-weight: 700; color: var(--black); }
.report-footer-note { font-size: 0.78rem; color: var(--gray-400); }

/* ===== Loading Overlay ===== */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(6px);
  z-index: 9999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.loading-overlay.active { display: flex; }
.loading-spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--black);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 1rem; font-weight: 600; color: var(--black); }
.loading-subtext { font-size: 0.85rem; color: var(--gray-400); }
.loading-steps { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.loading-step {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.84rem; color: var(--gray-500);
  opacity: 0;
  transform: translateY(6px);
  transition: all .4s ease;
}
.loading-step.show { opacity: 1; transform: translateY(0); }
.loading-step-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--gray-300);
}
.loading-step.done .loading-step-dot { background: var(--accent-green); }
.loading-step.active .loading-step-dot { background: var(--black); animation: pulse .8s ease infinite; }
@keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.4)} }

/* ===== Why Page ===== */
.why-hero {
  padding: 80px 0 60px;
  text-align: center;
}
.ai-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.ai-comparison-col { }
.ai-comparison-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--black);
}
.ai-comparison-header h3 { font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; }
.search-mock {
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  font-size: 0.85rem;
  color: var(--gray-700);
  line-height: 1.7;
  min-height: 160px;
}
.search-mock strong { color: var(--black); }
.search-mock .no-mention {
  color: var(--gray-400);
  font-style: italic;
}
.search-mock .mention { color: var(--accent-green); font-weight: 600; }
.trend-list { display: flex; flex-direction: column; gap: 12px; }
.trend-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--gray-50);
  border: 1px solid var(--border);
}
.trend-icon { font-size: 1.4rem; }
.trend-text { font-size: 0.88rem; color: var(--gray-700); line-height: 1.55; }
.trend-text strong { color: var(--black); font-weight: 700; }
.stat-highlight {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--black);
  display: block;
}
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-box { text-align: center; padding: 32px 20px; }
.stat-box-num { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.05em; display: block; margin-bottom: 6px; }
.stat-box-label { font-size: 0.85rem; color: var(--gray-500); line-height: 1.5; }

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: 48px 0 32px;
}
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; flex-wrap: wrap; }
.footer-brand { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.footer-desc { font-size: 0.82rem; color: rgba(255,255,255,.4); max-width: 240px; line-height: 1.65; }
.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-copy { font-size: 0.78rem; color: rgba(255,255,255,.3); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .card-grid-3, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .score-cards { grid-template-columns: repeat(2, 1fr); }
  .report-grid { grid-template-columns: 1fr; }
  .report-sidebar { flex-direction: row; flex-wrap: wrap; }
  .report-sidebar .sidebar-widget { flex: 1 1 280px; }
  .ai-comparison { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav { position: sticky; }
  .card-grid-2, .card-grid-3, .why-grid { grid-template-columns: 1fr; }
  .score-cards { grid-template-columns: 1fr; }
  .form-card { padding: 28px 20px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 24px; }
  .hero h1 { font-size: 2rem; }
  .report-header-inner { flex-direction: column; align-items: center; text-align: center; }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp .5s ease forwards; }
.delay-1 { animation-delay: .1s; opacity: 0; }
.delay-2 { animation-delay: .2s; opacity: 0; }
.delay-3 { animation-delay: .3s; opacity: 0; }

/* ===== Tabs ===== */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--gray-200); margin-bottom: 32px; }
.tab-btn {
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all .15s ease;
  font-family: var(--font);
  letter-spacing: -0.01em;
}
.tab-btn:hover { color: var(--black); }
.tab-btn.active { color: var(--black); border-bottom-color: var(--black); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ===== Tooltip ===== */
.tooltip-wrap { position: relative; display: inline-block; }
.tooltip-icon { color: var(--gray-400); cursor: help; font-size: 0.85rem; }
.tooltip-text {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-900);
  color: var(--white);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  width: 200px;
  text-align: center;
  z-index: 10;
  line-height: 1.5;
}
.tooltip-wrap:hover .tooltip-text { display: block; }

/* ===== Miscellaneous ===== */
.divider { height: 1px; background: var(--border); margin: 40px 0; }
.text-center { text-align: center; }
.text-muted { color: var(--gray-500); }
.font-mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; }
.highlight-box {
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-left: 4px solid var(--black);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.7;
}