/* ============================================
   时赞网络 官方网站 - 全局样式 v3
   简洁、稳健、零 JS 依赖
   ============================================ */

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

/* --- Variables --- */
:root {
  --c-primary: #0F1F3D;
  --c-primary-lt: #1E3A5F;
  --c-accent: #2563EB;
  --c-accent-lt: #3B82F6;
  --c-accent-bg: #EFF6FF;
  --c-bg: #FFFFFF;
  --c-bg-alt: #F8FAFC;
  --c-text: #1E293B;
  --c-text-lt: #64748B;
  --c-text-mt: #94A3B8;
  --c-border: #E2E8F0;
  --c-success: #10B981;
  --c-purple: #7C3AED;
  --c-white: #FFFFFF;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --max-w: 1140px;
  --nav-h: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.10);
  --t: .3s ease;
}

/* --- Base --- */
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color var(--t); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
svg { display: block; max-width: 100%; max-height: 100%; }

/* --- Navigation --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), box-shadow var(--t);
}
.nav.scrolled { border-bottom-color: var(--c-border); box-shadow: var(--shadow); }

.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; color: var(--c-primary); }
.nav-logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 1.1rem;
}

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--c-text); position: relative; padding: 4px 0; }
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--c-accent); border-radius: 2px; transition: width var(--t);
}
.nav-links a:hover, .nav-links a.active { color: var(--c-accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  padding: 8px 22px;
  background: linear-gradient(135deg, var(--c-accent-lt), var(--c-accent));
  color: #fff !important; border-radius: var(--radius-sm); font-weight: 600;
  box-shadow: 0 2px 10px rgba(37,99,235,.3);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,.4); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--c-text); border-radius: 2px; transition: var(--t); }

/* --- Layout Helpers --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--c-bg-alt); }

.section-label {
  display: inline-block; font-size: .8rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--c-accent); margin-bottom: 12px;
  padding: 5px 14px; background: var(--c-accent-bg); border-radius: 16px;
}
.section-title { font-size: 2.2rem; font-weight: 800; color: var(--c-primary); letter-spacing: -.5px; line-height: 1.25; margin-bottom: 14px; }
.section-desc { font-size: 1.05rem; color: var(--c-text-lt); max-width: 600px; line-height: 1.8; }
.text-center { text-align: center; }
.text-center .section-desc { margin: 0 auto; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: .95rem; transition: all var(--t);
  cursor: pointer; border: none; font-family: var(--font);
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary { background: linear-gradient(135deg, var(--c-accent-lt), var(--c-accent)); color: #fff; box-shadow: 0 4px 14px rgba(37,99,235,.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.4); }
.btn-outline { background: transparent; color: var(--c-primary); border: 2px solid var(--c-border); }
.btn-outline:hover { border-color: var(--c-accent); color: var(--c-accent); background: #fff; }
.btn-white { background: #fff; color: var(--c-primary); font-weight: 700; box-shadow: 0 4px 16px rgba(0,0,0,.12); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,.2); }

/* --- Hero --- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 60px;
  background: linear-gradient(165deg, #F8FAFC 0%, #EFF6FF 50%, #F0F9FF 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,.07) 0%, transparent 65%);
  border-radius: 50%; pointer-events: none;
}

.hero-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center;
  position: relative; z-index: 1;
}

.hero h1 {
  font-size: 3.2rem; font-weight: 900; line-height: 1.15; letter-spacing: -1.5px;
  color: var(--c-primary); margin-bottom: 22px;
}
.hero h1 .hl {
  background: linear-gradient(135deg, var(--c-accent), var(--c-purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero p { font-size: 1.12rem; color: var(--c-text-lt); margin-bottom: 32px; line-height: 1.8; max-width: 480px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero visual card */
.hero-card {
  background: #fff; border-radius: 20px; box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-border); overflow: hidden;
  max-width: 100%;
}
.hero-card-top { display: flex; gap: 7px; padding: 14px 18px; border-bottom: 1px solid var(--c-border); background: #FAFBFC; }
.hero-card-dot { width: 10px; height: 10px; border-radius: 50%; }
.hero-card-body { padding: 28px; }
.hero-card-title { font-size: .75rem; font-weight: 700; color: var(--c-text-lt); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 20px; }

.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 24px; }
.hero-metric { background: var(--c-bg-alt); border-radius: var(--radius-sm); padding: 16px 12px; }
.hero-metric-label { font-size: .7rem; color: var(--c-text-mt); font-weight: 600; margin-bottom: 5px; }
.hero-metric-val { font-size: 1.4rem; font-weight: 800; color: var(--c-primary); letter-spacing: -.5px; line-height: 1; }
.hero-metric-trend { font-size: .7rem; font-weight: 700; color: var(--c-success); margin-top: 4px; }

.hero-chart { height: 100px; display: flex; align-items: flex-end; gap: 5px; padding: 0 2px; }
.hero-bar { flex: 1; background: linear-gradient(180deg, var(--c-accent-lt), var(--c-accent)); border-radius: 4px 4px 0 0; min-height: 10px; }

.hero-card-tags { display: flex; gap: 8px; padding: 0 28px 20px; }
.hero-tag { display: inline-flex; align-items: center; gap: 5px; padding: 5px 12px; border-radius: 16px; font-size: .72rem; font-weight: 700; }
.hero-tag svg { width: 12px; height: 12px; }

/* --- Stats --- */
.stats { background: linear-gradient(135deg, var(--c-primary), var(--c-primary-lt)); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.stat { text-align: center; padding: 48px 20px; border-right: 1px solid rgba(255,255,255,.08); }
.stat:last-child { border-right: none; }
.stat-num { font-size: 2.5rem; font-weight: 900; color: #fff; letter-spacing: -1px; line-height: 1; margin-bottom: 8px; }
.stat-num .suffix { background: linear-gradient(135deg, var(--c-accent-lt), #A78BFA); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: .85rem; color: rgba(255,255,255,.6); font-weight: 500; }

/* --- Service Cards --- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 44px; }

.svc-card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 36px 28px; transition: all var(--t); position: relative; overflow: hidden;
}
.svc-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-accent-lt), var(--c-accent));
  transform: scaleX(0); transform-origin: left; transition: transform var(--t);
}
.svc-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.svc-card:hover::before { transform: scaleX(1); }

.svc-icon {
  width: 52px; height: 52px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.svc-icon svg { width: 26px; height: 26px; }
.svc-icon.blue { background: #DBEAFE; color: var(--c-accent); }
.svc-icon.green { background: #D1FAE5; color: var(--c-success); }
.svc-icon.purple { background: #EDE9FE; color: var(--c-purple); }
.svc-icon.orange { background: #FED7AA; color: #F97316; }
.svc-icon.red { background: #FECACA; color: #EF4444; }
.svc-icon.cyan { background: #CFFAFE; color: #06B6D4; }
.svc-icon.yellow { background: #FEF3C7; color: #D97706; }

.svc-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--c-primary); margin-bottom: 10px; }
.svc-card p { font-size: .9rem; color: var(--c-text-lt); line-height: 1.7; margin-bottom: 18px; }
.svc-link { font-size: .85rem; font-weight: 600; color: var(--c-accent); display: inline-flex; align-items: center; gap: 6px; transition: gap var(--t); }
.svc-link svg { width: 16px; height: 16px; }
.svc-card:hover .svc-link { gap: 10px; }

/* --- Feature Split --- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-top: 48px; }
.split-visual {
  background: linear-gradient(135deg, var(--c-accent-bg), #F0F9FF);
  border-radius: 20px; min-height: 340px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid #DBEAFE; position: relative; overflow: hidden;
}
.split-visual-inner { text-align: center; padding: 40px; position: relative; z-index: 1; }
.split-ring { position: absolute; border-radius: 50%; border: 2px solid rgba(37,99,235,.08); }
.split-ring.r1 { width: 280px; height: 280px; top: -40px; right: -40px; }
.split-ring.r2 { width: 180px; height: 180px; bottom: -20px; left: -20px; border-color: rgba(124,58,237,.06); }
.split-icon-big {
  width: 76px; height: 76px; margin: 0 auto 18px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-accent-lt), var(--c-accent));
  display: flex; align-items: center; justify-content: center; color: #fff;
  box-shadow: 0 12px 32px rgba(37,99,235,.25);
}
.split-icon-big svg { width: 38px; height: 38px; }
.split-label { font-size: 1.1rem; font-weight: 700; color: var(--c-primary); }
.split-sub { font-size: .85rem; color: var(--c-text-lt); margin-top: 4px; }

.feature-list { display: flex; flex-direction: column; gap: 24px; }
.feature-item { display: flex; gap: 14px; }
.feature-check {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--c-accent-lt), var(--c-accent));
  color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(37,99,235,.2);
}
.feature-check svg { width: 20px; height: 20px; }
.feature-item h4 { font-size: 1.05rem; font-weight: 700; color: var(--c-primary); margin-bottom: 5px; }
.feature-item p { font-size: .9rem; color: var(--c-text-lt); line-height: 1.7; }

/* --- Timeline --- */
.timeline { position: relative; margin-top: 44px; padding-left: 28px; max-width: 700px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 4px; bottom: 4px; width: 2px; background: linear-gradient(180deg, var(--c-accent), var(--c-border)); }
.tl-item { position: relative; padding-bottom: 32px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -24px; top: 6px; width: 12px; height: 12px;
  background: #fff; border-radius: 50%; border: 3px solid var(--c-accent);
  box-shadow: 0 0 0 4px var(--c-accent-bg);
}
.tl-year { display: inline-block; font-size: .75rem; font-weight: 700; color: var(--c-accent); margin-bottom: 6px; padding: 3px 10px; background: var(--c-accent-bg); border-radius: 12px; }
.tl-item h3 { font-size: 1.1rem; font-weight: 700; color: var(--c-primary); margin-bottom: 4px; }
.tl-item p { font-size: .9rem; color: var(--c-text-lt); line-height: 1.7; }

/* --- Detail Service --- */
.detail { padding: 70px 0; border-bottom: 1px solid var(--c-border); }
.detail:last-child { border-bottom: none; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.detail-grid.reverse > .detail-visual { order: -1; }

.detail-tag { display: inline-block; padding: 5px 14px; background: var(--c-accent-bg); color: var(--c-accent); border-radius: 16px; font-size: .75rem; font-weight: 700; margin-bottom: 14px; }
.detail-content h2 { font-size: 1.9rem; font-weight: 800; color: var(--c-primary); letter-spacing: -.5px; margin-bottom: 14px; }
.detail-content > p { font-size: 1rem; color: var(--c-text-lt); line-height: 1.8; margin-bottom: 22px; }

.detail-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 22px; }
.detail-list li { display: flex; align-items: flex-start; gap: 12px; font-size: .95rem; color: var(--c-text); }
.detail-check { flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; background: #D1FAE5; color: var(--c-success); display: flex; align-items: center; justify-content: center; margin-top: 2px; }
.detail-check svg { width: 14px; height: 14px; }

.detail-visual {
  border-radius: 20px; min-height: 320px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--c-border); position: relative; overflow: hidden;
}
.detail-visual-inner { text-align: center; padding: 40px; }
.detail-visual-icon {
  width: 68px; height: 68px; border-radius: var(--radius); margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center; color: #fff;
  box-shadow: 0 12px 32px rgba(0,0,0,.12);
}
.detail-visual-icon svg { width: 34px; height: 34px; }
.detail-visual-label { font-size: 1rem; font-weight: 700; color: var(--c-primary); }

/* --- Contact --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; margin-top: 44px; }
.contact-info h3 { font-size: 1.25rem; font-weight: 700; color: var(--c-primary); margin-bottom: 24px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-ico { flex-shrink: 0; width: 44px; height: 44px; border-radius: var(--radius-sm); background: #DBEAFE; color: var(--c-accent); display: flex; align-items: center; justify-content: center; }
.contact-ico svg { width: 22px; height: 22px; }
.contact-item h4 { font-size: .88rem; font-weight: 700; color: var(--c-primary); margin-bottom: 2px; }
.contact-item p { font-size: .9rem; color: var(--c-text-lt); line-height: 1.6; }

.qr-section { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--c-border); }
.qr-section h4 { font-size: .88rem; font-weight: 700; color: var(--c-primary); margin-bottom: 16px; }
.qr-row { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-box {
  width: 96px; height: 96px; background: var(--c-bg-alt); border: 2px dashed var(--c-border);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px; color: var(--c-text-mt);
}
.qr-box svg { width: 30px; height: 30px; }
.qr-item span { font-size: .8rem; color: var(--c-text-lt); font-weight: 500; }

.contact-form { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-md); }
.contact-form h3 { font-size: 1.25rem; font-weight: 700; color: var(--c-primary); margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; color: var(--c-text); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--c-border);
  border-radius: var(--radius-sm); font-family: var(--font); font-size: .9rem;
  color: var(--c-text); background: var(--c-bg-alt); transition: all var(--t); outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(37,99,235,.1); background: #fff;
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.btn-submit {
  width: 100%; padding: 14px; background: linear-gradient(135deg, var(--c-accent-lt), var(--c-accent));
  color: #fff; border: none; border-radius: var(--radius-sm); font-size: .95rem; font-weight: 700;
  cursor: pointer; transition: all var(--t); font-family: var(--font);
  box-shadow: 0 4px 14px rgba(37,99,235,.3);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.4); }

/* --- CTA --- */
.cta { background: linear-gradient(135deg, var(--c-primary), var(--c-primary-lt)); color: #fff; text-align: center; padding: 80px 24px; position: relative; overflow: hidden; }
.cta::before { content: ''; position: absolute; top: -40%; right: -15%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(37,99,235,.12) 0%, transparent 60%); border-radius: 50%; }
.cta h2 { font-size: 2.2rem; font-weight: 800; letter-spacing: -.5px; margin-bottom: 14px; position: relative; }
.cta p { font-size: 1.05rem; opacity: .8; max-width: 520px; margin: 0 auto 28px; line-height: 1.8; position: relative; }

/* --- Page Header --- */
.page-header { padding: calc(var(--nav-h) + 70px) 0 56px; background: linear-gradient(160deg, #F8FAFC 0%, #EFF6FF 100%); text-align: center; position: relative; overflow: hidden; }
.page-header::before { content: ''; position: absolute; top: -25%; right: -8%; width: 450px; height: 450px; background: radial-gradient(circle, rgba(37,99,235,.05) 0%, transparent 60%); border-radius: 50%; }
.page-header h1 { font-size: 2.6rem; font-weight: 900; color: var(--c-primary); letter-spacing: -.8px; margin-bottom: 12px; position: relative; }
.page-header p { font-size: 1.08rem; color: var(--c-text-lt); max-width: 540px; margin: 0 auto; line-height: 1.8; position: relative; }

/* --- Footer --- */
.footer { background: var(--c-primary); color: #fff; padding: 56px 0 28px; }
.footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.footer-brand p { font-size: .85rem; opacity: .65; line-height: 1.7; margin-bottom: 18px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; transition: all var(--t); }
.footer-social a svg { width: 17px; height: 17px; }
.footer-social a:hover { background: var(--c-accent); transform: translateY(-2px); }
.footer-col h4 { font-size: .88rem; font-weight: 700; margin-bottom: 18px; opacity: .9; }
.footer-col ul { display: flex; flex-direction: column; gap: 9px; }
.footer-col ul li a { font-size: .85rem; opacity: .55; transition: all var(--t); }
.footer-col ul li a:hover { opacity: 1; color: var(--c-accent-lt); }
.footer-bottom { max-width: var(--max-w); margin: 0 auto; padding: 24px 24px 0; margin-top: 36px; border-top: 1px solid rgba(255,255,255,.1); text-align: center; font-size: .8rem; opacity: .45; }

/* --- Animation (progressive enhancement) --- */
.anim { opacity: 1; transform: none; transition: opacity .6s ease, transform .6s ease; max-width: 100%; }
.js .anim { opacity: 0; transform: translateY(24px); }
.js .anim.in { opacity: 1; transform: none; }

/* --- Responsive --- */
@media (max-width: 968px) {
  .hero-grid, .split, .detail-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-card { max-width: 460px; margin: 0 auto; }
  .hero h1 { font-size: 2.5rem; }
  .split-visual { min-height: 260px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,.08); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 1.9rem; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links { display: flex; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--c-border); padding: 20px 24px; gap: 14px; box-shadow: var(--shadow-lg); }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .page-header h1 { font-size: 1.9rem; }
  .grid-3, .grid-4, .stats-grid { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,.08); }
  .stat:last-child { border-bottom: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 22px; }
  .cta h2 { font-size: 1.7rem; }
  .hero-metrics { grid-template-columns: 1fr; }
}