/* 康明眼科 · 科普文章页共享样式 */
:root{
  --blue-900:#0b3d64;
  --blue-700:#0e6ba8;
  --blue-500:#1a8fd1;
  --blue-300:#7cc4ec;
  --cyan:#16c2c2;
  --ink:#1f2d3d;
  --gray-700:#46556a;
  --gray-500:#7587a0;
  --gray-200:#e7edf5;
  --gray-100:#f3f7fc;
  --radius:16px;
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--gray-100);line-height:1.65;-webkit-font-smoothing:antialiased}

/* 顶部导航 */
.site-header{background:#fff;border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:50}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--blue-900);font-weight:700;font-size:17px;white-space:nowrap}
.logo-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--blue-700),var(--cyan));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-mark svg{width:18px;height:18px}
.header-nav{display:flex;gap:18px;margin-left:auto;flex-wrap:wrap}
.header-nav a{color:var(--gray-700);text-decoration:none;font-size:14px}
.header-nav a:hover{color:var(--blue-700)}
.header-tel{background:var(--blue-700);color:#fff;padding:7px 15px;border-radius:9px;text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap}
.header-tel:hover{background:var(--blue-900)}

/* 面包屑 */
.crumb{max-width:820px;margin:0 auto;padding:16px 20px 0;font-size:13px;color:var(--gray-500)}
.crumb a{color:var(--blue-700);text-decoration:none}
.crumb span{margin:0 6px;color:var(--gray-300, #c9d5e2)}

/* 文章主体 */
.article-wrap{max-width:820px;margin:0 auto;padding:0 20px 60px}
.article-card{background:#fff;border-radius:var(--radius);box-shadow:0 10px 30px rgba(14,107,168,.10);overflow:hidden;margin-top:14px}
.article-hero{padding:38px 42px 30px;border-bottom:1px solid var(--gray-200);background:linear-gradient(180deg,#f7fbff,#fff)}
.article-cat{display:inline-block;background:rgba(26,143,209,.12);color:var(--blue-700);font-size:12.5px;padding:4px 12px;border-radius:20px;font-weight:600;margin-bottom:14px}
.article-hero h1{font-size:30px;line-height:1.38;color:var(--blue-900);font-weight:700;letter-spacing:-.3px}
.article-meta{margin-top:16px;display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--gray-500)}
.article-meta span{display:flex;align-items:center;gap:5px}
.article-lead{margin-top:18px;font-size:16.5px;color:var(--gray-700);line-height:1.85;background:var(--gray-100);border-left:3px solid var(--blue-500);padding:14px 18px;border-radius:0 10px 10px 0}

.article-body{padding:34px 42px 40px}
.article-body h2{font-size:21px;color:var(--blue-900);margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--blue-500);line-height:1.45;font-weight:700}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:17px;color:var(--blue-700);margin:26px 0 12px;font-weight:700}
.article-body p{font-size:16.5px;line-height:1.95;color:#2c3b4d;margin-bottom:16px}
.article-body strong{color:var(--blue-900);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 18px 4px;padding-left:22px}
.article-body li{font-size:16.5px;line-height:1.9;margin-bottom:9px;color:#2c3b4d}
.article-body li::marker{color:var(--blue-500)}
.article-body a{color:var(--blue-700)}

/* 数据块 */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.stat{background:var(--gray-100);border-radius:12px;padding:16px 14px;text-align:center}
.stat b{display:block;font-size:24px;color:var(--blue-700);line-height:1.2}
.stat span{font-size:13px;color:var(--gray-500);display:block;margin-top:5px}

/* 提示框 */
.tip{background:#eef7ff;border:1px solid #d3e8f8;border-radius:12px;padding:16px 18px;margin:20px 0}
.tip b{color:var(--blue-900)}
.tip p{margin:0;font-size:15.5px;line-height:1.85}
.warn{background:#fff8ec;border:1px solid #f2dfbc;border-radius:12px;padding:16px 18px;margin:20px 0}
.warn p{margin:0;font-size:15.5px;line-height:1.85;color:#6b4c1a}

/* 对比表 */
.table-scroll{overflow-x:auto;margin:22px 0;-webkit-overflow-scrolling:touch}
table.cmp{width:100%;border-collapse:collapse;font-size:15px;min-width:600px}
table.cmp th{background:var(--blue-900);color:#fff;padding:12px 14px;text-align:left;font-weight:600;font-size:14.5px}
table.cmp td{padding:12px 14px;border-bottom:1px solid var(--gray-200);vertical-align:top;line-height:1.7}
table.cmp tr:nth-child(even) td{background:#fafcfe}
table.cmp td:first-child{font-weight:600;color:var(--blue-900)}

/* FAQ */
.faq{margin-top:34px;border-top:1px solid var(--gray-200);padding-top:28px}
.faq h2{border-left-color:var(--cyan)}
details.q{border:1px solid var(--gray-200);border-radius:12px;margin-bottom:10px;background:#fff;overflow:hidden}
details.q summary{padding:14px 18px;font-size:16px;font-weight:600;color:var(--blue-900);cursor:pointer;list-style:none;display:flex;align-items:flex-start;gap:10px}
details.q summary::-webkit-details-marker{display:none}
details.q summary::before{content:"+";color:var(--blue-500);font-weight:700;font-size:19px;line-height:1.2;flex-shrink:0}
details.q[open] summary::before{content:"−"}
details.q .a{padding:0 18px 16px 42px;font-size:15.8px;line-height:1.9;color:var(--gray-700)}
details.q .a p{margin:0 0 10px;font-size:15.8px}
details.q .a p:last-child{margin:0}

/* 免责声明 */
.disclaimer{background:var(--gray-100);border-radius:12px;padding:14px 18px;font-size:13.5px;color:var(--gray-500);line-height:1.8;margin-top:28px}

/* 底部 CTA */
.cta{background:linear-gradient(135deg,var(--blue-900),var(--blue-700));color:#fff;border-radius:var(--radius);padding:30px 34px;margin-top:34px}
.cta h3{font-size:20px;margin-bottom:8px;font-weight:700}
.cta p{font-size:15px;opacity:.92;line-height:1.8;margin-bottom:18px}
.cta-stores{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}
.cta-store{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);border-radius:12px;padding:14px 16px}
.cta-store b{display:block;font-size:15.5px;margin-bottom:4px}
.cta-store span{font-size:13.5px;opacity:.9;display:block}
.cta-store a{color:#fff;text-decoration:none;font-weight:600}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.cta-btns a{padding:11px 22px;border-radius:10px;text-decoration:none;font-size:15px;font-weight:600}
.btn-w{background:#fff;color:var(--blue-900)}
.btn-o{border:1.5px solid rgba(255,255,255,.55);color:#fff}

/* 相关文章 */
.related{margin-top:30px}
.related h3{font-size:17px;color:var(--blue-900);margin-bottom:12px;font-weight:700}
.related a{display:block;background:#fff;border:1px solid var(--gray-200);border-radius:12px;padding:15px 18px;text-decoration:none;color:var(--ink);margin-bottom:10px;transition:.15s}
.related a:hover{border-color:var(--blue-300);box-shadow:0 4px 14px rgba(14,107,168,.08)}
.related a b{display:block;color:var(--blue-900);font-size:15.5px;margin-bottom:4px}
.related a span{font-size:13.5px;color:var(--gray-500)}

/* 页脚 */
.site-footer{background:var(--blue-900);color:#c7dcec;padding:34px 20px 28px;margin-top:0}
.footer-inner{max-width:var(--maxw);margin:0 auto}
.footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.footer-cols h4{color:#fff;font-size:15px;margin-bottom:9px;font-weight:600}
.footer-cols p{font-size:13.5px;line-height:1.85}
.footer-cols a{color:#c7dcec;text-decoration:none}
.foot-bottom{max-width:var(--maxw);margin:22px auto 0;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}
.foot-icp{text-align:center;margin-top:14px;font-size:12.5px;color:#8fb3d4}
.foot-icp a{color:#8fb3d4;text-decoration:none}

@media (max-width:700px){
  .article-hero{padding:28px 22px 24px}
  .article-hero h1{font-size:23px}
  .article-body{padding:26px 22px 32px}
  .article-body h2{font-size:19px}
  .article-body p,.article-body li{font-size:16px}
  .stat-grid{grid-template-columns:1fr}
  .cta{padding:24px 22px}
  .cta-stores{grid-template-columns:1fr}
  .header-nav{display:none}
}