* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: #101828;
  background: #ffffff;
}
:root {
  --primary: #8A0C24; /* 深红 */
  --primary-600: #a30f2b;
  --bg-tint: #faf6f7;
  --text-secondary: #475467;
  --border: #e5e7eb;
  --card-bg: #ffffff;
  --shadow: 0 10px 30px rgba(16,24,40,.08);
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.8);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: baseline; gap: 8px; font-weight: 700; }
.logo { color: var(--primary); letter-spacing: 1px; }
.brand-cn { color: #111827; }
.menu { display: flex; gap: 18px; align-items: center; }
.menu a { color: #111827; text-decoration: none; font-weight: 500; }
.menu a:hover { color: var(--primary); }

/* Hero */
.hero {
  background: linear-gradient(180deg, #fff, #fff0f1 60%, #fff);
  padding: 72px 0 40px;
}
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.hero-copy h1 { font-size: 40px; margin: 0 0 12px; }
.hero-copy p { color: var(--text-secondary); font-size: 16px; }
.hero-cta { display: flex; gap: 12px; margin: 20px 0; }
.trust { display: flex; gap: 12px; flex-wrap: wrap; padding: 0; margin: 16px 0 0; list-style: none; }
.trust li { background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 8px 12px; font-size: 12px; color: var(--text-secondary); }
.hero-art { position: relative; height: 440px; }
.hero-img { width: 100%; height: 100%; object-fit: cover; border-radius: 16px; box-shadow: var(--shadow); }
.shape { display: none; }

/* Sections */
.section { padding: 64px 0; }
.section.tinted { background: var(--bg-tint); }
.banner { height: 420px; }
.banner img { width: 100%; height: 100%; object-fit: cover; border-radius: 16px; box-shadow: var(--shadow); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
.cards.with-images .service-card { padding: 0; overflow: hidden; }
.cards.with-images .service-card .cover { width: 100%; height: 160px; object-fit: cover; display: block; }
.cards.with-images .service-card .content { padding: 16px; }
.stats { display: grid; gap: 12px; align-content: start; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat .num { font-size: 28px; color: var(--primary); font-weight: 700; }
.stat .label { font-size: 12px; color: var(--text-secondary); }
.method { padding-left: 18px; color: var(--text-secondary); }

/* Form */
.form { display: grid; gap: 12px; align-content: start; }
.form label { display: grid; gap: 6px; font-size: 14px; }
.form input, .form textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); font-size: 14px;
}
.form .form-tip { color: var(--text-secondary); font-size: 12px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: #fff; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 28px 0; }
.footer-links { display: flex; gap: 16px; }
.footer-links a { color: #111827; text-decoration: none; }
.footer-links a:hover { color: var(--primary); }
.small { color: var(--text-secondary); font-size: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 14px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; border: 1px solid var(--primary-600); }
.btn-primary:hover { background: var(--primary-600); }
.btn-ghost { background: #fff; color: #111827; border: 1px solid var(--border); }
.btn-ghost:hover { border-color: #d1d5db; }

/* Responsive */
@media (max-width: 900px) {
  .hero-inner, .grid-2 { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .hero-art { height: 300px; }
  .banner { height: 300px; }
}
@media (max-width: 640px) {
  .menu { display: none; }
  .cards, .grid-3 { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .hero-art { height: 220px; }
  .banner { height: 220px; }
}