/* ═══════════════════════════════════════════════════════════
   Airflow Landing — landing.css v1.0
   Premium Light Theme · Inter Font · Teal→Blue Gradient
   ═══════════════════════════════════════════════════════════ */

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #334155;
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ─── Utilities ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.gradient-text {
  background: linear-gradient(135deg, #0d9488, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.bg-slate { background: #f8fafc; }
.bg-warm { background: linear-gradient(135deg, #f0fdfa, #eff6ff); }
.required { color: #ef4444; }

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px; font-weight: 600; font-size: 16px;
  color: #fff; background: linear-gradient(135deg, #0d9488, #3b82f6);
  text-decoration: none; border: none; cursor: pointer;
  box-shadow: 0 4px 16px rgba(13,148,136,0.3);
  transition: all 0.3s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13,148,136,0.4); }
.btn-primary:active { transform: scale(0.98); }

.btn-primary-sm {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 20px; border-radius: 10px; font-weight: 600; font-size: 14px;
  color: #fff; background: linear-gradient(135deg, #0d9488, #3b82f6);
  text-decoration: none; border: none; cursor: pointer;
  transition: all 0.2s ease;
}
.btn-primary-sm:hover { transform: translateY(-1px); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px; font-weight: 600; font-size: 16px;
  color: #0d9488; background: transparent; border: 2px solid #0d9488;
  text-decoration: none; cursor: pointer; transition: all 0.3s ease;
}
.btn-outline:hover { background: #f0fdfa; transform: translateY(-2px); }

.btn-outline-light {
  padding: 10px 20px; border-radius: 10px; font-weight: 500; font-size: 14px;
  color: #0d9488; background: #fff; border: 1.5px solid #d1d5db;
  cursor: pointer; transition: all 0.2s ease; white-space: nowrap;
}
.btn-outline-light:hover { border-color: #0d9488; background: #f0fdfa; }

/* ─── NAV ─── */
.nav-glass {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}
.nav-glass.scrolled { background: rgba(255,255,255,0.95); box-shadow: 0 4px 24px rgba(0,0,0,0.08); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 72px;
}
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo-img { height: 32px; }
.nav-links { display: flex; gap: 32px; }
.nav-link {
  font-size: 15px; font-weight: 500; color: #64748b;
  text-decoration: none; transition: color 0.2s;
}
.nav-link:hover { color: #0d9488; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-login {
  font-size: 13px; color: #94a3b8; text-decoration: none;
  padding: 6px 12px; border-radius: 6px; transition: all 0.2s;
}
.nav-login:hover { color: #64748b; background: #f1f5f9; }
.nav-hamburger {
  display: none; background: none; border: none;
  font-size: 20px; color: #64748b; cursor: pointer; padding: 8px;
}
.nav-cta-mobile { display: none; }
.nav-mobile-menu {
  display: none; flex-direction: column; padding: 16px 24px 24px;
  background: rgba(255,255,255,0.98); border-top: 1px solid #e2e8f0;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  padding: 14px 0; font-size: 16px; font-weight: 500;
  color: #334155; text-decoration: none; border-bottom: 1px solid #f1f5f9;
}
.mobile-menu-cta {
  margin-top: 12px; padding: 14px !important; text-align: center;
  background: linear-gradient(135deg, #0d9488, #3b82f6) !important;
  color: #fff !important; border-radius: 12px; font-weight: 600 !important;
}

/* ─── HERO ─── */
.hero-section {
  padding: 140px 24px 80px;
  background: linear-gradient(135deg, #f8fafc 0%, rgba(240,253,250,0.3) 50%, rgba(239,246,255,0.2) 100%);
  overflow: hidden;
}
.hero-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  background: #f0fdfa; color: #0d9488; font-size: 14px; font-weight: 600;
  margin-bottom: 20px; border: 1px solid #99f6e4;
}
.hero-headline {
  font-size: 48px; font-weight: 800; line-height: 1.15;
  color: #0f172a; margin-bottom: 20px;
}
.hero-sub { font-size: 18px; color: #64748b; line-height: 1.7; margin-bottom: 32px; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero Widget */
.widget-card {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-radius: 20px; border: 1px solid rgba(0,0,0,0.06);
  box-shadow: 0 8px 40px rgba(0,0,0,0.08);
  overflow: hidden;
}
.widget-header {
  padding: 16px 24px; background: linear-gradient(135deg, #0d9488, #3b82f6);
  color: #fff; font-weight: 600; font-size: 15px;
  display: flex; align-items: center; gap: 8px;
}
.widget-body { padding: 24px; }
.widget-label { font-size: 13px; font-weight: 600; color: #64748b; margin-bottom: 6px; display: block; }
.widget-select {
  width: 100%; padding: 12px 16px; border: 1.5px solid #e2e8f0; border-radius: 10px;
  font-size: 15px; color: #334155; background: #fff; margin-bottom: 16px;
  appearance: auto; cursor: pointer;
}
.widget-select:focus { border-color: #0d9488; outline: none; box-shadow: 0 0 0 3px rgba(13,148,136,0.1); }
.widget-stepper {
  display: flex; align-items: center; gap: 16px; margin-bottom: 20px;
}
.stepper-btn {
  width: 40px; height: 40px; border-radius: 10px; border: 1.5px solid #e2e8f0;
  background: #fff; font-size: 18px; cursor: pointer; color: #334155;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.stepper-btn:hover { border-color: #0d9488; color: #0d9488; }
.widget-estimate {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 0; border-top: 1px solid #f1f5f9; margin-bottom: 16px;
}
.widget-estimate-label { font-size: 14px; color: #64748b; }
.widget-estimate-price { font-size: 28px; font-weight: 800; color: #0f172a; }
.widget-cta { width: 100%; text-align: center; font-size: 15px; padding: 12px; }

/* ─── TRUST BAR ─── */
.trust-section { padding: 48px 24px; border-top: 1px solid #f1f5f9; border-bottom: 1px solid #f1f5f9; }
.trust-inner {
  max-width: 1000px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center;
}
.trust-icon { font-size: 24px; color: #0d9488; margin-bottom: 8px; }
.trust-number { font-size: 36px; font-weight: 800; color: #0f172a; }
.trust-label { font-size: 14px; color: #64748b; margin-top: 4px; }

/* ─── SECTIONS ─── */
.section { padding: 100px 0; }
.section-dark { background: linear-gradient(135deg, #1e293b, #0f172a); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-size: 40px; font-weight: 800; color: #0f172a; line-height: 1.2; }
.section-title-light { font-size: 40px; font-weight: 800; color: #fff; line-height: 1.2; }
.section-sub { font-size: 18px; color: #64748b; margin-top: 12px; }
.section-sub-light { font-size: 18px; color: #94a3b8; margin-top: 12px; }

/* ─── SERVICE STEPS ─── */
.service-steps {
  display: flex; align-items: stretch; justify-content: center; gap: 20px;
  margin-bottom: 60px; flex-wrap: wrap;
}
.service-step {
  flex: 1; min-width: 240px; max-width: 320px;
  background: #fff; border-radius: 16px; padding: 36px 28px; text-align: center;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06); transition: all 0.3s ease;
}
.service-step:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.1); }
.step-number { font-size: 14px; font-weight: 700; color: #0d9488; margin-bottom: 12px; }
.step-icon { font-size: 36px; color: #0d9488; margin-bottom: 16px; }
.service-step h3 { font-size: 20px; font-weight: 700; color: #0f172a; margin-bottom: 10px; }
.service-step p { font-size: 15px; color: #64748b; line-height: 1.6; }
.service-step-arrow { display: flex; align-items: center; color: #cbd5e1; font-size: 20px; }

/* Before/After */
.ba-container { max-width: 700px; margin: 0 auto; }
.ba-card {
  display: flex; border-radius: 16px; overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08); background: #fff;
}
.ba-side { flex: 1; padding: 40px 32px; text-align: center; }
.ba-before { background: #fef2f2; }
.ba-after { background: #f0fdf4; }
.ba-badge {
  display: inline-block; padding: 4px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 700; margin-bottom: 20px;
}
.ba-badge-before { background: #fecaca; color: #991b1b; }
.ba-badge-after { background: #bbf7d0; color: #166534; }
.ba-icon-dirty { font-size: 48px; color: #dc2626; margin-bottom: 16px; display: block; }
.ba-icon-clean { font-size: 48px; color: #16a34a; margin-bottom: 16px; display: block; animation: spin 4s linear infinite; }
.ba-visual p { font-size: 14px; color: #64748b; line-height: 1.6; }
.ba-divider {
  display: flex; align-items: center; justify-content: center; width: 60px;
  background: linear-gradient(135deg, #0d9488, #3b82f6);
}
.ba-arrow-circle { color: #fff; font-size: 20px; }

/* ─── CALCULATOR ─── */
.calc-wrapper {
  max-width: 700px; margin: 0 auto; background: #fff;
  border-radius: 20px; box-shadow: 0 8px 40px rgba(0,0,0,0.06);
  overflow: hidden; border: 1px solid #f1f5f9;
}
.calc-step { padding: 32px; border-bottom: 1px solid #f1f5f9; }
.calc-step-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 20px; font-size: 16px; font-weight: 600; color: #334155;
}
.calc-step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, #0d9488, #3b82f6);
  color: #fff; font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.calc-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.calc-tab {
  flex: 1; padding: 12px; border-radius: 10px; border: 1.5px solid #e2e8f0;
  background: #fff; font-size: 15px; font-weight: 500; cursor: pointer;
  transition: all 0.2s;
}
.calc-tab.active { border-color: #0d9488; background: #f0fdfa; color: #0d9488; font-weight: 600; }
.calc-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.calc-item {
  padding: 20px 16px; border-radius: 12px; border: 1.5px solid #e2e8f0;
  background: #fff; text-align: center; cursor: pointer; transition: all 0.2s;
}
.calc-item:hover { border-color: #0d9488; background: #f0fdfa; }
.calc-item.selected { border-color: #0d9488; background: #f0fdfa; box-shadow: 0 0 0 3px rgba(13,148,136,0.15); }
.calc-item i { font-size: 24px; color: #0d9488; display: block; margin-bottom: 8px; }
.calc-item-name { display: block; font-size: 14px; font-weight: 600; color: #334155; margin-bottom: 4px; }
.calc-item-price { font-size: 13px; color: #64748b; }
.calc-detail-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.calc-detail-row label { font-size: 15px; font-weight: 500; color: #334155; }
.calc-options { display: flex; flex-direction: column; gap: 12px; }
.calc-option {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: 10px; border: 1px solid #e2e8f0;
  cursor: pointer; transition: all 0.2s;
}
.calc-option:has(input:checked) { border-color: #0d9488; background: #f0fdfa; }
.calc-option input { accent-color: #0d9488; width: 18px; height: 18px; }
.calc-option span { font-size: 14px; color: #334155; }
.calc-option em { color: #64748b; font-style: normal; }
.calc-result { padding: 32px; background: #f8fafc; }
.calc-result-inner { text-align: center; }
.calc-breakdown { margin-bottom: 16px; font-size: 15px; color: #64748b; }
.calc-total {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 0; border-top: 2px solid #e2e8f0;
  font-size: 16px; font-weight: 600; color: #334155;
}
.calc-total-price { font-size: 32px; font-weight: 800; color: #0f172a; }
.calc-note { font-size: 13px; color: #94a3b8; margin: 12px 0 20px; }
.calc-cta { width: 100%; text-align: center; }

/* ─── CERTIFICATION ─── */
.cert-cards { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin-bottom: 48px; }
.cert-card {
  flex: 1; min-width: 260px; max-width: 320px;
  background: #fff; border-radius: 20px; padding: 36px 28px;
  border: 1.5px solid #e2e8f0; text-align: center;
  transition: all 0.3s ease; position: relative;
}
.cert-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.1); }
.cert-featured {
  border-color: #0d9488; transform: scale(1.05);
  box-shadow: 0 8px 40px rgba(13,148,136,0.15);
}
.cert-featured:hover { transform: scale(1.05) translateY(-4px); }
.cert-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 20px; border-radius: 999px;
  background: linear-gradient(135deg, #0d9488, #3b82f6);
  color: #fff; font-size: 13px; font-weight: 700;
}
.cert-stars { font-size: 24px; color: #f59e0b; margin-bottom: 8px; letter-spacing: 4px; }
.cert-grade { font-size: 22px; font-weight: 800; color: #0f172a; margin-bottom: 6px; }
.cert-cycle { font-size: 15px; color: #0d9488; font-weight: 600; margin-bottom: 20px; }
.cert-features { list-style: none; text-align: left; margin-bottom: 24px; }
.cert-features li {
  padding: 8px 0; font-size: 14px; color: #334155;
  border-bottom: 1px solid #f1f5f9;
}
.cert-features li i { color: #0d9488; margin-right: 8px; font-size: 12px; }
.cert-cta { width: 100%; padding: 12px; font-size: 14px; }
.cert-targets { text-align: center; }
.cert-targets-title { font-size: 16px; font-weight: 600; color: #64748b; margin-bottom: 20px; }
.cert-target-icons { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.cert-target { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.cert-target i { font-size: 24px; color: #0d9488; }
.cert-target span { font-size: 13px; color: #64748b; }

/* ─── WHY AIRFLOW ─── */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.why-card {
  background: #fff; border-radius: 16px; padding: 36px 28px;
  border: 1px solid #f1f5f9; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all 0.3s ease;
}
.why-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.08); border-color: #e2e8f0; }
.why-icon { font-size: 32px; color: #0d9488; margin-bottom: 16px; }
.why-card h3 { font-size: 20px; font-weight: 700; color: #0f172a; margin-bottom: 10px; }
.why-card p { font-size: 15px; color: #64748b; line-height: 1.6; }

/* ─── PROCESS ─── */
.process-timeline {
  display: flex; align-items: flex-start; justify-content: center;
  max-width: 900px; margin: 0 auto;
}
.process-step { text-align: center; flex: 1; }
.process-icon {
  width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(135deg, #0d9488, #3b82f6);
  color: #fff; font-size: 24px;
  display: flex; align-items: center; justify-content: center;
}
.process-content h4 { font-size: 16px; font-weight: 700; color: #0f172a; margin-bottom: 6px; }
.process-content p { font-size: 14px; color: #64748b; line-height: 1.5; }
.process-line {
  flex: 0 0 40px; height: 2px; background: #d1d5db;
  margin-top: 32px; align-self: flex-start;
}

/* ─── REVIEWS ─── */
.review-slider { position: relative; overflow: hidden; max-width: 900px; margin: 0 auto; }
.review-track { display: flex; transition: transform 0.4s ease; gap: 24px; }
.review-card {
  min-width: calc(33.333% - 16px); background: #fff; border-radius: 16px;
  padding: 32px; border: 1px solid #f1f5f9;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.review-stars { color: #f59e0b; font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { font-size: 15px; color: #334155; line-height: 1.7; margin-bottom: 16px; min-height: 80px; }
.review-author strong { display: block; font-size: 14px; color: #0f172a; }
.review-author span { font-size: 13px; color: #94a3b8; }
.review-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%;
  background: #fff; border: 1px solid #e2e8f0;
  cursor: pointer; font-size: 14px; color: #64748b;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08); transition: all 0.2s;
}
.review-nav:hover { background: #f8fafc; color: #0d9488; border-color: #0d9488; }
.review-prev { left: 0; }
.review-next { right: 0; }

/* ─── ORDER FORM ─── */
.order-form-card {
  max-width: 650px; margin: 0 auto 32px;
  background: #fff; border-radius: 20px; padding: 40px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.15);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 600; color: #334155; margin-bottom: 6px;
}
.form-group label i { color: #0d9488; margin-right: 4px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid #e2e8f0;
  border-radius: 10px; font-size: 15px; color: #334155;
  font-family: inherit; transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: #0d9488; outline: none; box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}
.address-row { display: flex; gap: 8px; }
.address-row input { flex: 1; }
.order-services { display: flex; flex-direction: column; gap: 10px; }
.order-svc-row {
  display: flex; gap: 8px; align-items: center;
}
.order-svc-row select { flex: 1; padding: 12px 16px; border: 1.5px solid #e2e8f0; border-radius: 10px; font-size: 14px; }
.svc-qty-wrap { display: flex; align-items: center; gap: 8px; }
.svc-qty { font-size: 16px; font-weight: 700; color: #0f172a; min-width: 24px; text-align: center; }
.stepper-btn-sm {
  width: 32px; height: 32px; border-radius: 8px; border: 1.5px solid #e2e8f0;
  background: #fff; font-size: 16px; cursor: pointer; color: #334155;
  display: flex; align-items: center; justify-content: center;
}
.stepper-btn-sm:hover { border-color: #0d9488; color: #0d9488; }
.btn-add-svc {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; font-size: 13px; color: #0d9488; background: transparent;
  border: 1px dashed #0d9488; border-radius: 8px; cursor: pointer;
  margin-top: 4px; transition: all 0.2s;
}
.btn-add-svc:hover { background: #f0fdfa; }
.order-estimate {
  margin: 16px 0; padding: 20px; border-radius: 12px;
  background: #f0fdfa; border: 1px solid #99f6e4;
}
.order-estimate-total {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 12px; border-top: 1.5px solid #99f6e4;
  font-weight: 700; color: #0f172a;
}
#order-estimate-price { font-size: 24px; font-weight: 800; }
.form-agree {
  display: flex; align-items: center; gap: 8px; margin: 16px 0;
  font-size: 14px; color: #64748b; cursor: pointer;
}
.form-agree input { accent-color: #0d9488; width: 18px; height: 18px; }
.order-submit { width: 100%; padding: 16px; font-size: 18px; margin-top: 8px; }
.order-contact {
  text-align: center; font-size: 16px; color: #94a3b8;
}
.contact-item { color: #94a3b8; text-decoration: none; transition: color 0.2s; }
.contact-item:hover { color: #fff; }
.contact-divider { margin: 0 16px; }

/* Order Success */
.order-success { text-align: center; padding: 40px 0; }
.success-icon { font-size: 64px; color: #10b981; margin-bottom: 20px; }
.order-success h3 { font-size: 24px; font-weight: 700; color: #0f172a; margin-bottom: 8px; }
.order-success p { color: #64748b; margin-bottom: 8px; }
.success-order-id { font-size: 14px; color: #94a3b8; margin-bottom: 24px !important; }

/* ─── FOOTER ─── */
.footer { background: #0f172a; color: #94a3b8; padding: 60px 0 0; }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap;
  padding-bottom: 40px; border-bottom: 1px solid #1e293b;
}
.footer-brand { max-width: 280px; }
.footer-logo { height: 28px; filter: brightness(0) invert(1); margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.6; }
.footer-links { display: flex; gap: 60px; }
.footer-col h4 { color: #e2e8f0; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col a {
  display: block; font-size: 14px; color: #64748b;
  text-decoration: none; padding: 4px 0; transition: color 0.2s;
}
.footer-col a:hover { color: #94a3b8; }
.footer-bottom {
  max-width: 1200px; margin: 0 auto; padding: 20px 24px;
  font-size: 13px; text-align: center;
}

/* ─── Calculator Detail Lines ─── */
.calc-line {
  display: flex; justify-content: space-between; padding: 6px 0;
  font-size: 15px; color: #334155;
}
.calc-line-opt { color: #64748b; }

/* ─── Service Row Remove Button ─── */
.svc-remove-btn {
  background: none; border: none; color: #ef4444; cursor: pointer;
  font-size: 16px; padding: 4px 8px; border-radius: 6px;
  transition: all 0.2s;
}
.svc-remove-btn:hover { background: #fef2f2; }
.order-svc-row { transition: all 0.2s ease; }

/* ─── Active Nav Link ─── */
.nav-link.active { color: #0d9488; font-weight: 600; }
.nav-glass { transition: all 0.3s ease, transform 0.3s ease; }

/* ─── Toast Notifications ─── */
.toast-msg {
  position: fixed; top: 90px; left: 50%; transform: translateX(-50%) translateY(-20px);
  padding: 14px 28px; border-radius: 12px; font-size: 15px; font-weight: 500;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  z-index: 10000; opacity: 0; transition: all 0.3s ease;
  font-family: 'Inter', sans-serif; max-width: 90%;
}
.toast-msg.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-info { background: #fff; color: #334155; border: 1px solid #e2e8f0; }
.toast-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.toast-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.toast-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

/* ─── Price Pop Animation ─── */
@keyframes pricePop {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.price-pop { animation: pricePop 0.3s ease; }

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.anim-fade-up { animation: fadeUp 0.7s ease-out both; }
.anim-slide-up { animation: slideUp 0.8s ease-out 0.3s both; }
.anim-on-scroll { opacity: 0; transform: translateY(24px); transition: all 0.6s ease-out; }
.anim-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ─── Mobile ─── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
  .nav-cta-mobile { display: inline-flex; }
  .nav-login { display: none; }
  .nav-inner { height: 60px; }

  .hero-section { padding: 100px 20px 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-headline { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn-primary, .hero-ctas .btn-outline { width: 100%; text-align: center; }

  .trust-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .trust-number { font-size: 28px; }

  .section { padding: 60px 0; }
  .section-title, .section-title-light { font-size: 28px; }
  .section-header { margin-bottom: 40px; }

  .service-steps { flex-direction: column; align-items: center; }
  .service-step { max-width: 100%; }
  .service-step-arrow { transform: rotate(90deg); }

  .ba-card { flex-direction: column; }
  .ba-divider { width: 100%; height: 40px; }

  .calc-items { grid-template-columns: repeat(2, 1fr); }

  .cert-cards { flex-direction: column; align-items: center; }
  .cert-featured { transform: none; order: -1; }
  .cert-featured:hover { transform: translateY(-4px); }

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

  .process-timeline { flex-direction: column; align-items: center; gap: 12px; }
  .process-step { display: flex; align-items: center; gap: 16px; text-align: left; width: 100%; }
  .process-icon { margin: 0; flex-shrink: 0; }
  .process-line { width: 2px; height: 20px; margin: 0; flex: 0 0 20px; }

  .review-card { min-width: calc(100% - 16px); }

  .form-grid { grid-template-columns: 1fr; }
  .order-form-card { padding: 24px; margin: 0 16px 32px; }

  .footer-inner { flex-direction: column; }
  .footer-links { flex-direction: column; gap: 32px; }

  .cert-target-icons { gap: 16px; }
  
  /* 모바일 토스트 */
  .toast-msg { top: 70px; font-size: 14px; padding: 12px 20px; }
}

@media (max-width: 375px) {
  .hero-headline { font-size: 28px; }
  .calc-items { grid-template-columns: 1fr; }
}