:root {
  --brand: #C0272D;
  --brand-dark: #9E1F24;
  --brand-tint: #FAF0F0;
  --brand-line: #E8C4C4;
  --ink: #1F2937;
  --ink-soft: #4B5563;
  --muted: #6B7280;
  --section: #FAFAFA;
  --line: #E5E7EB;
  --white: #FFFFFF;
  --radius: 8px;
  --radius-lg: 12px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--brand);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--white);
  opacity: 0.92;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }

.brand-name { font-size: 16px; font-weight: 500; letter-spacing: 1px; }

.brand-en { font-size: 10px; color: var(--muted); letter-spacing: 1.2px; }

.nav { display: flex; gap: 28px; flex-wrap: wrap; }

.nav a {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}

.nav a:hover { color: var(--brand); }

.nav a.active { color: var(--brand); border-bottom-color: var(--brand); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
}

.hero { padding: 78px 0 68px; background: var(--white); }

.hero-grid {
  display: flex;
  align-items: center;
  gap: 56px;
  flex-wrap: wrap;
}

.hero-main { flex: 1 1 340px; min-width: 0; }

.hero-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--brand);
  background: var(--brand-tint);
  border-radius: 20px;
  padding: 5px 14px;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.45;
  margin: 0 0 16px;
  letter-spacing: -0.2px;
}

.hero-sub {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0 0 30px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-size: 14px;
  padding: 11px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}

.btn-primary { background: var(--brand); color: var(--white); }

.btn-primary:hover { background: var(--brand-dark); }

.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }

.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.facts {
  flex: 0 0 300px;
  background: var(--brand-tint);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.facts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.fact-label { font-size: 12px; color: var(--muted); margin: 0 0 6px; }

.fact-value { font-size: 15px; font-weight: 500; color: var(--ink); }

.section { padding: 64px 0; }

.section-alt { background: var(--section); }

.section-head { margin-bottom: 34px; }

.section-head h2 {
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 3px solid var(--brand);
  line-height: 1.3;
}

.section-head p { font-size: 14px; color: var(--muted); margin: 0; padding-left: 17px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  background: var(--white);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 500;
  margin: 0 0 12px;
}

.card-title::before {
  content: "";
  width: 3px;
  height: 14px;
  background: var(--brand);
  border-radius: 2px;
  flex-shrink: 0;
}

.card p { font-size: 13px; color: var(--ink-soft); margin: 0 0 8px; }

.certs {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.certs-label { font-size: 13px; color: var(--muted); white-space: nowrap; }

.certs-list { display: flex; gap: 14px; flex: 1; min-width: 0; flex-wrap: wrap; }

.cert-item {
  flex: 1 1 130px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  padding: 14px 16px;
}

.cert-item span { font-size: 13px; color: var(--ink-soft); }

.page-head { padding: 56px 0 40px; background: var(--section); border-bottom: 1px solid var(--line); }

.page-head h1 { font-size: 26px; font-weight: 500; margin: 0 0 12px; }

.page-head p { font-size: 14px; color: var(--muted); margin: 0; max-width: 720px; }

.prose { max-width: 760px; }

.prose h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 32px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--brand);
}

.prose p { margin: 0 0 16px; color: var(--ink-soft); }

.prose ul { padding-left: 22px; margin: 0 0 16px; color: var(--ink-soft); }

.prose li { margin-bottom: 8px; }

.table-simple { width: 100%; border-collapse: collapse; font-size: 14px; }

.table-simple th {
  background: var(--section);
  font-weight: 500;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--line);
}

.table-simple td { padding: 12px 14px; border: 1px solid var(--line); color: var(--ink-soft); }

.ph {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--brand);
  background: var(--brand-tint);
  border: 1px dashed var(--brand-line);
  border-radius: var(--radius);
  padding: 5px 11px;
  margin: 2px 0;
}

.ph::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  flex-shrink: 0;
}

.ph-line {
  display: block;
  font-size: 13px;
  color: var(--brand);
  background: var(--brand-tint);
  border: 1px dashed var(--brand-line);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin: 0 0 10px;
}

.case-body { margin-top: 4px; }

.contact-grid { display: flex; gap: 56px; flex-wrap: wrap; }

.contact-main { flex: 1 1 340px; min-width: 0; }

.contact-side {
  flex: 0 0 300px;
  background: var(--brand-tint);
  border-radius: var(--radius-lg);
  padding: 26px;
}

.contact-item { margin-bottom: 24px; }

.contact-item:last-child { margin-bottom: 0; }

.contact-item dt { font-size: 12px; color: var(--muted); margin: 0 0 6px; }

.contact-item dd { margin: 0; font-size: 14px; color: var(--ink); }

.footer {
  background: var(--ink);
  color: #9CA3AF;
  padding: 30px 0;
  font-size: 13px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-brand { display: flex; align-items: center; gap: 9px; color: var(--white); }

.footer-mark { width: 16px; height: 16px; border-radius: 3px; background: var(--brand); }

.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }

.footer-links a:hover { color: var(--white); }

.footer-note { width: 100%; padding-top: 20px; margin-top: 4px; border-top: 1px solid #374151; display: flex; gap: 18px; flex-wrap: wrap; }
.footer-note a { color: inherit; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.28); padding-bottom: 1px; transition: border-color .18s, color .18s; }
.footer-note a:hover { color: #FFFFFF; border-bottom-color: #FFFFFF; }

@media (max-width: 820px) {
  .nav { gap: 20px; }
  .hero { padding: 52px 0 46px; }
  .hero h1 { font-size: 25px; }
  .facts { flex: 1 1 100%; }
}

@media (max-width: 640px) {
  .topbar-inner { flex-wrap: wrap; padding: 12px 0; min-height: 0; }
  .nav-toggle { display: block; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-bottom: 12px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .nav a.active { border-bottom-color: var(--line); }
  .section { padding: 44px 0; }
  .section-head h2 { font-size: 19px; }
  .contact-grid { gap: 32px; }
  .contact-side { flex: 1 1 100%; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
}