/* 南京润健生物科技有限公司 官网样式 */
/* 设计原则：专业、克制、清爽 —— 工程感而非营销感 */

:root {
  --primary: #1a5c46;
  --primary-light: #2a7a5e;
  --text: #1f2933;
  --text-sub: #52606d;
  --text-muted: #7b8794;
  --bg: #ffffff;
  --bg-alt: #f6f8f7;
  --border: #e0e5e2;
  --radius: 6px;
  --maxw: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand-name { font-size: 17px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
.brand-sub { font-size: 12px; color: var(--text-muted); letter-spacing: 1px; }
.nav { display: flex; gap: 26px; align-items: center; }
.nav a { color: var(--text-sub); text-decoration: none; font-size: 14.5px; transition: color .2s; }
.nav a:hover { color: var(--primary); }
.nav-cta {
  color: #fff !important;
  background: var(--primary);
  padding: 8px 18px;
  border-radius: var(--radius);
  font-weight: 500;
}
.nav-cta:hover { background: var(--primary-light); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, #f2f7f4 0%, #e8f1ec 100%);
  padding: 76px 0 68px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  line-height: 1.5;
}
.hero-sub { font-size: 17px; color: var(--text-sub); margin-top: 14px; }
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 26px 0 32px;
}
.tag {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13.5px;
}
.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 13px 38px;
  border-radius: var(--radius);
  font-size: 15.5px;
  font-weight: 500;
  transition: background .2s;
}
.btn-primary:hover { background: var(--primary-light); }

/* ---------- Section ---------- */
.section { padding: 62px 0; }
.section-alt { background: var(--bg-alt); }
.section h2 {
  font-size: 23px;
  color: var(--primary);
  margin-bottom: 22px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.3;
}
.section h3 {
  font-size: 16.5px;
  color: var(--text);
  margin: 30px 0 12px;
  font-weight: 600;
}
.section p { color: var(--text-sub); }
.note { font-size: 13.5px; color: var(--text-muted); margin-top: 10px; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14.5px; }
.info-table th, .info-table td,
.capability-table th, .capability-table td {
  border: 1px solid var(--border);
  padding: 11px 15px;
  text-align: left;
  vertical-align: top;
}
.info-table th {
  background: var(--bg-alt);
  color: var(--text);
  font-weight: 600;
  width: 180px;
}
.capability-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}
.capability-table tbody tr:nth-child(even) { background: #fafcfb; }
.capability-table td { color: var(--text-sub); }

/* ---------- Feature list ---------- */
.feature-list { list-style: none; margin-top: 8px; }
.feature-list li {
  padding: 11px 0 11px 26px;
  position: relative;
  color: var(--text-sub);
  border-bottom: 1px dashed var(--border);
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 21px;
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
}
.feature-list strong { color: var(--text); }

/* ---------- Process ---------- */
.process-list { list-style: none; counter-reset: none; }
.process-list li {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.process-list li:last-child { border-bottom: none; }
.process-list .step {
  flex: 0 0 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius);
}
.process-list strong { display: block; color: var(--text); font-size: 15.5px; margin-bottom: 3px; }
.process-list p { font-size: 14.5px; color: var(--text-sub); }

/* ---------- FAQ ---------- */
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 14px;
}
.faq-item h3 { margin: 0 0 10px; font-size: 16px; color: var(--primary); line-height: 1.6; }
.faq-item p { font-size: 14.5px; color: var(--text-sub); }

/* ---------- Contact ---------- */
.section-contact { background: var(--primary); color: #fff; }
.section-contact h2 { color: #fff; border-left-color: #7fc4a8; }
.contact-lead { color: rgba(255,255,255,0.88); max-width: 620px; margin-bottom: 30px; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}
.contact-item {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.contact-label { font-size: 13px; color: rgba(255,255,255,0.7); letter-spacing: 1px; margin-bottom: 8px; }
.contact-value { font-size: 15.5px; color: #fff; line-height: 1.7; }

/* ---------- Footer ---------- */
.site-footer {
  background: #14261f;
  color: rgba(255,255,255,0.65);
  padding: 30px 0;
  text-align: center;
  font-size: 13px;
  line-height: 1.9;
}
.footer-note { color: rgba(255,255,255,0.45); font-size: 12.5px; margin-top: 6px; }
.footer-record { color: rgba(255,255,255,0.45); font-size: 12.5px; margin-top: 6px; }
.footer-record a { color: rgba(255,255,255,0.55); text-decoration: none; }
.footer-record a:hover { color: rgba(255,255,255,0.85); }
.footer-record img { vertical-align: middle; }
.about-note { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 13.5px; color: var(--text-muted); line-height: 1.7; }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .header-inner { height: auto; flex-direction: column; padding: 12px 0; gap: 8px; }
  .nav { gap: 16px; flex-wrap: wrap; justify-content: center; }
  .nav a { font-size: 13.5px; }
  .hero { padding: 50px 0 44px; }
  .hero h1 { font-size: 23px; }
  .hero-sub { font-size: 15px; }
  .section { padding: 44px 0; }
  .section h2 { font-size: 19px; }
  .info-table th { width: 110px; font-size: 13.5px; }
  table { font-size: 13.5px; }
  .capability-table { display: block; overflow-x: auto; white-space: nowrap; }
  .process-list .step { flex: 0 0 38px; height: 38px; font-size: 13px; }
}