/* ============================================
   广阔天传媒 v2 — 商务科技风
   Design inspired by top ad agencies
   ============================================ */

/* === Design Tokens === */
:root {
  --bg-deep: #080c14;
  --bg-base: #0d1119;
  --bg-card: #111827;
  --bg-card-hover: #161e2e;
  --bg-elevated: #1a2332;

  --border: #1e2d45;
  --border-light: #2a3a55;

  --text-primary: #e8edf4;
  --text-secondary: #94a3b8;
  --text-muted: #5c6e89;

  --accent: #f0853f;
  --accent-glow: #f5a062;
  --accent-dim: #6b3a1a;
  --accent-subtle: rgba(240, 133, 63, 0.08);

  --gold: #d4a843;
  --gold-dim: #8a6d2e;

  --green: #4ade80;
  --green-subtle: rgba(74, 222, 128, 0.08);
  --red: #f87171;
  --red-subtle: rgba(248, 113, 113, 0.06);

  --blue: #60a5fa;

  --font: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', ui-monospace, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(240, 133, 63, 0.15);
}

/* === Reset === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: #fff; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Section Shared === */
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-glow); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(240, 133, 63, 0.3); }
.btn-outline { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-light); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-glow); transform: translateY(-1px); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* === Navigation === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 12px 0;
  transition: all 0.35s ease;
}
.nav.scrolled {
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
}
.logo-mark { width: 32px; height: 32px; color: var(--accent); flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-phone:hover { color: var(--accent); }
.nav-cta-btn { margin-left: 4px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: 0.3s; }

/* === Hero === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 100px 0 60px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 35%, rgba(255,255,255,0.08) 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 35%, rgba(255,255,255,0.08) 0%, transparent 70%);
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}
.hero-glow--1 { top: -15%; left: -10%; width: 600px; height: 500px; background: rgba(240, 133, 63, 0.06); }
.hero-glow--2 { bottom: -20%; right: -10%; width: 500px; height: 400px; background: rgba(96, 165, 250, 0.04); }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}
.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero-title-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-glow) 40%, var(--gold) 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  max-width: 600px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  padding: 16px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.stat-item { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.stat-number { font-size: 1.3rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
.stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-divider { width: 1px; height: 32px; background: var(--border); }

/* === Services === */
.services { padding: 100px 0 80px; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}
.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.service-card-featured {
  border-color: var(--accent-dim);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(240, 133, 63, 0.04) 100%);
}
.service-badge {
  position: absolute;
  top: -10px;
  right: 24px;
  padding: 4px 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: 0.03em;
}
.service-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--accent);
  margin-bottom: 20px;
  flex-shrink: 0;
}
.service-icon svg { width: 26px; height: 26px; }
.service-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.service-info > p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 24px; }
.service-tags span {
  padding: 4px 10px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}
.service-highlight {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  margin-bottom: 18px;
  background: rgba(74, 222, 128, 0.06);
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--green);
}
.service-highlight svg { flex-shrink: 0; color: var(--green); }

.service-link {
  margin-top: auto;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: color 0.2s;
}
.service-link:hover { color: var(--accent-glow); }

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

.services-footer {
  text-align: center;
  padding-top: 12px;
}
.services-footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* === Advantage === */
.advantage {
  padding: 100px 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border);
}
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.adv-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}
.adv-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.adv-card--hero {
  border-color: var(--accent-dim);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(240, 133, 63, 0.06) 100%);
  position: relative;
}
.adv-card--hero::after {
  content: '核心卖点';
  position: absolute;
  top: -10px;
  right: 20px;
  padding: 3px 10px;
  background: var(--accent);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: 0.04em;
}
.adv-card--hero .adv-icon { color: var(--accent-glow); }
.adv-icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--accent);
  margin-bottom: 16px;
}
.adv-icon svg { width: 24px; height: 24px; }
.adv-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.adv-card p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.65; }

/* === Cases === */
.cases { padding: 100px 0; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.case-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.case-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-subtle);
  border-radius: 100px;
  margin-bottom: 20px;
  align-self: flex-start;
}
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--bg-base);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.case-metric { text-align: center; }
.cm-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.cm-label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 2px;
}
.case-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.65; margin-bottom: 20px; flex: 1; }
.case-client {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}
.case-avatar {
  width: 32px; height: 32px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* === Placements (eco-grouped) === */
.placements { padding: 100px 0; }
.eco-groups { display: flex; flex-direction: column; gap: 32px; max-width: 900px; margin: 0 auto; }

/* Eco Group */
.eco-group {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
}
.eco-group-header {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
}
.eco-group-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.eco-group-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.eco-group-icon svg { width: 22px; height: 22px; }
.eco-group-text { flex: 1; min-width: 0; }
.eco-group-text h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}
.eco-group-text span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Placements inside eco group */
.eco-placements { padding: 0; }
.eco-placement {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.eco-placement:last-child { border-bottom: none; }

.eco-placement-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
  line-height: 1.3;
}
.eco-placement-detail { display: flex; flex-direction: column; gap: 12px; }
.eco-detail-block h5 {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.eco-detail-block h5::before {
  content: '';
  display: inline-block;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.eco-detail-block p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0;
}
.eco-detail-block p strong {
  color: var(--text-primary);
  font-weight: 700;
}

@media (max-width: 640px) {
  .eco-group-header { padding: 16px 14px; }
  .eco-group-icon { width: 36px; height: 36px; }
  .eco-group-icon svg { width: 18px; height: 18px; }
  .eco-group-text h3 { font-size: 0.95rem; }
  .eco-placement { padding: 16px 14px; }
  .eco-placement-name { font-size: 0.82rem; }
  .eco-detail-block p { font-size: 0.78rem; }
}

/* === Process (two-phase) === */
.process {
  padding: 100px 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border);
}
.process-phase { margin-bottom: 48px; }
.process-phase:last-child { margin-bottom: 0; }
.phase-label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 32px;
}
.phase-label::before,
.phase-label::after {
  content: '';
  display: inline-block;
  width: 40px;
  height: 1px;
  background: var(--border-light);
  vertical-align: middle;
  margin: 0 12px;
}
.process-steps {
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 0 20px;
  flex: 1;
  max-width: 260px;
}
.step-number {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}
.step-number span {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.step-line {
  position: absolute;
  top: 28px;
  right: -50%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--border));
  z-index: 1;
}
.process-step:last-child .step-line { display: none; }
.process-step h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.55; }

/* === FAQ === */
.faq { padding: 100px 0; background: var(--bg-base); border-top: 1px solid var(--border); }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: color 0.2s;
  gap: 16px;
}
.faq-question:hover { color: var(--accent); }
.faq-toggle {
  flex-shrink: 0;
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: all 0.3s;
}
.faq-item.open .faq-toggle { background: var(--accent); border-color: var(--accent); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 20px; }
.faq-answer p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; }

/* === Contact === */
.contact {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-base) 100%);
}
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-info .section-title { text-align: left; }
.contact-info .section-tag { display: block; }
.contact-desc { font-size: 1rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 28px; }
.contact-desc strong { color: var(--accent); font-weight: 700; }
.contact-list { list-style: none; display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
}
.contact-list li svg { flex-shrink: 0; color: var(--accent); }
.contact-list li strong { display: block; font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }
.contact-list li span { font-size: 0.95rem; color: var(--text-primary); }
.contact-ctas { display: flex; flex-direction: column; gap: 10px; }

.contact-form-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}
.contact-form-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.contact-form-card > p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 24px; }

.contact-direct { display: flex; flex-direction: column; gap: 12px; }
.contact-direct-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all 0.25s;
}
.contact-direct-item:hover { border-color: var(--accent-dim); background: var(--bg-card); }
.contact-direct-item svg:first-child { flex-shrink: 0; color: var(--accent); }
.contact-direct-item .arrow-icon { margin-left: auto; flex-shrink: 0; color: var(--text-muted); opacity: 0; transition: opacity 0.25s; }
.contact-direct-item:hover .arrow-icon { opacity: 1; }
.contact-direct-item > div { display: flex; flex-direction: column; gap: 2px; }
.contact-direct-item > div strong { font-size: 0.95rem; font-weight: 700; }
.contact-direct-item > div span { font-size: 0.78rem; color: var(--text-muted); }
.contact-note {
  margin-top: 20px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* === Footer === */
.footer { padding: 64px 0 32px; border-top: 1px solid var(--border); background: var(--bg-deep); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-brand p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.7; }
.footer-links h4, .footer-contact h4 { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.footer-links a, .footer-contact p { display: block; font-size: 0.83rem; color: var(--text-secondary); margin-bottom: 8px; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p, .footer-bottom a { font-size: 0.75rem; color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* === Mobile CTA === */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 99;
  padding: 10px 16px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  background: rgba(8, 12, 20, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  gap: 12px;
}
.mobile-cta-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.2s;
}
.mobile-cta-btn:hover { background: var(--accent-glow); }
.mobile-cta-call { background: transparent; border: 1px solid var(--border-light); color: var(--text-secondary); }
.mobile-cta-call:hover { background: var(--bg-card); border-color: var(--text-secondary); }

/* === Scroll Reveal Animation === */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* === Responsive === */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr; }
  .services-grid--two { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { flex-wrap: wrap; }
  .process-step { max-width: 200px; }
  .step-line { display: none !important; }
  .process-phase:nth-child(1) .process-step:nth-child(2) .step-line { display: none !important; }
}

@media (max-width: 768px) {
  html { scroll-padding-top: 60px; }

  .nav-toggle { display: flex; z-index: 102; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(8, 12, 20, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s;
  }
  .nav-links.open { opacity: 1; pointer-events: auto; }
  .nav-link { font-size: 1.15rem; padding: 14px 24px; }
  .nav-phone { display: none; }
  .nav-cta-btn { display: none; }

  .hero-stats { flex-wrap: wrap; justify-content: center; gap: 14px; padding: 12px 20px; }
  .stat-divider:nth-child(4) { display: none; }

  .services-grid { grid-template-columns: 1fr; }
  .services-grid--two { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .process-steps { flex-direction: column; align-items: center; max-width: 320px; margin: 0 auto; }
  .process-step { max-width: 100%; }
  .step-line { display: none !important; }
  .process-step { padding: 0; }

  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 320px; }

  .mobile-cta { display: flex; }
  body { padding-bottom: 80px; }
}

@media (max-width: 480px) {
  .adv-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { padding: 10px 14px; gap: 10px; }
  .stat-number { font-size: 1rem; }
  .stat-label { font-size: 0.62rem; }
}