/* ============================================================
   元像素医疗科技 · 官网样式
   移动优先（H5）· 高级感 · 响应式
   ============================================================ */
:root{
  --primary:#0e7c86;
  --primary-dark:#0a5a62;
  --primary-deep:#082a2e;
  --accent:#1f9e8f;
  --accent-2:#2bb6a3;
  --ink:#16262b;
  --muted:#5d7178;
  --bg:#ffffff;
  --bg-soft:#f1f8f8;
  --bg-deep:#072528;
  --line:#e3eeee;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 2px 12px rgba(13,80,86,.06);
  --shadow:0 14px 38px rgba(13,80,86,.12);
  --shadow-lg:0 26px 64px rgba(13,80,86,.18);
  --maxw:1180px;
  --header-h:60px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
::selection{background:rgba(31,158,143,.22)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;line-height:1;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border:none;cursor:pointer;white-space:nowrap;
  box-shadow:0 10px 24px rgba(14,124,134,.26);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s;
  -webkit-tap-highlight-color:transparent;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(14,124,134,.34);filter:brightness(1.04)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary);box-shadow:none}
.btn.ghost:hover{background:var(--primary);color:#fff;box-shadow:0 12px 26px rgba(14,124,134,.22)}

/* ---------- 区块 ---------- */
.section{padding:54px 0}
.section.soft{background:linear-gradient(180deg,var(--bg-soft),#ffffff)}
.section h2{font-size:25px;line-height:1.32;margin-bottom:12px;letter-spacing:.5px;font-weight:800}
.section .lead{color:var(--muted);max-width:680px;margin-bottom:32px;font-size:15.5px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- Header / 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.scrolled{background:rgba(255,255,255,.94);box-shadow:0 8px 30px rgba(12,60,66,.10)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--primary-dark);letter-spacing:.3px}
.brand img{height:32px;width:32px}
.nav-links{
  position:absolute;top:var(--header-h);left:0;right:0;
  background:rgba(255,255,255,.98);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  flex-direction:column;gap:0;padding:6px 20px 14px;
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 30px rgba(12,60,66,.08);
  display:none;
}
.nav-links.open{display:flex;animation:dropIn .3s var(--ease)}
@keyframes dropIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.nav-links a{font-size:15.5px;color:var(--ink);font-weight:500;padding:13px 4px;border-bottom:1px solid var(--line);width:100%;transition:color .2s}
.nav-links a:last-child{border-bottom:none}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border:none;background:var(--bg-soft);border-radius:12px;cursor:pointer;
  transition:background .2s;
}
.nav-toggle:hover{background:#e6f2f2}
.nav-toggle span{display:block;width:19px;height:2px;background:var(--primary-dark);border-radius:2px;margin:0 auto;transition:transform .32s var(--ease),opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(150deg,#072528 0%,#0e7c86 58%,#1f9e8f 100%);
  padding:60px 0 68px;
}
.hero::before{content:"";position:absolute;right:-90px;top:-70px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%);filter:blur(4px)}
.hero::after{content:"";position:absolute;left:-80px;bottom:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,182,163,.28),transparent 70%)}
.hero .container{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:34px;text-align:center}
.hero-copy{width:100%}
.hero .tag{display:inline-block;padding:6px 15px;border:1px solid rgba(255,255,255,.45);border-radius:999px;font-size:12.5px;margin-bottom:16px;letter-spacing:1.5px;background:rgba(255,255,255,.08)}
.hero h1{font-size:32px;line-height:1.24;margin-bottom:16px;font-weight:800;letter-spacing:.5px}
.hero p{font-size:16px;opacity:.94;max-width:560px;margin:0 auto 26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero-visual{width:100%;max-width:340px}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.7)}
.hero .btn.ghost:hover{background:#fff;color:var(--primary-dark)}

/* ---------- 网格 & 卡片 ---------- */
.grid{display:grid;gap:18px}
.grid.cols-2,.grid.cols-3,.news-grid{grid-template-columns:1fr}
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;overflow:hidden;
}
.card::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,var(--primary),var(--accent-2));transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d3e8e8}
.card:hover::before{transform:scaleX(1)}
.card .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#eaf6f6,#dff1f0);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px}
.card h3{font-size:18px;margin-bottom:8px;font-weight:700}
.card p{color:var(--muted);font-size:14.5px}

/* ---------- 产品 ---------- */
.product{display:grid;gap:26px;align-items:center}
.product .pic{background:linear-gradient(150deg,#eef7f7,#e2f1f0);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.product .pic img{border-radius:12px}
.product .cat{color:var(--primary);font-weight:700;font-size:13px;letter-spacing:1px;margin-bottom:10px;display:inline-block;text-transform:uppercase}
.product .info h3{font-size:24px;margin-bottom:8px;color:var(--primary-dark);font-weight:800}
.product .info > p{color:var(--muted);font-size:15px}
.feature-list{list-style:none;margin:18px 0}
.feature-list li{padding:8px 0 8px 30px;position:relative;color:var(--ink);font-size:14.5px}
.feature-list li::before{content:"✓";position:absolute;left:0;top:8px;width:20px;height:20px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:11px;font-weight:800;
  display:flex;align-items:center;justify-content:center}
.spec-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:14px}
.spec-table td{padding:11px 12px;border-bottom:1px solid var(--line)}
.spec-table tr:last-child td{border-bottom:none}
.spec-table td:first-child{color:var(--muted);width:88px;white-space:nowrap}

/* ---------- 新闻 ---------- */
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .3s var(--ease),box-shadow .3s var(--ease);cursor:pointer;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news-card .cover{height:150px;background:var(--bg-soft);overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .cover img{transform:scale(1.06)}
.news-card .body{padding:16px 18px 20px;display:flex;flex-direction:column;flex:1}
.news-card .date{color:var(--primary);font-size:12.5px;font-weight:700;letter-spacing:.5px}
.news-card h3{font-size:16.5px;margin:6px 0 8px;line-height:1.45}
.news-card p{color:var(--muted);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-detail{max-width:780px;margin:0 auto}
.news-detail h1{font-size:26px;line-height:1.35;margin:6px 0}
.news-detail .meta{color:var(--muted);margin:6px 0 14px;font-size:13.5px}
.news-detail .cover{height:200px;background:var(--bg-soft);border-radius:var(--radius);overflow:hidden;margin:8px 0 20px}
.news-detail .cover img{width:100%;height:100%;object-fit:cover}
.news-detail .content{margin-top:18px;font-size:16px;line-height:1.9;color:#2b3a3f;white-space:pre-wrap}
.back-link{display:inline-flex;align-items:center;gap:6px;margin:0 0 14px;color:var(--primary);font-weight:600;font-size:14px}
.back-link:hover{text-decoration:underline}

/* ---------- 数据 ---------- */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:22px;text-align:center}
.stat .num{font-size:34px;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.1}
.stat .lab{color:var(--muted);font-size:13.5px;margin-top:4px}

/* ---------- 联系 ---------- */
.contact-wrap{display:grid;gap:28px}
.contact-info p{margin:11px 0;color:var(--muted);font-size:15px}
.contact-info strong{color:var(--ink)}
.contact-info a{color:var(--primary)}
.form{display:flex;flex-direction:column;gap:13px}
.form input,.form textarea{
  padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:16px;font-family:inherit;background:#fff;transition:border-color .2s,box-shadow .2s;width:100%;
}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(31,158,143,.12)}
.form textarea{min-height:120px;resize:vertical}
.form .hint{color:var(--muted);font-size:13px}

/* ---------- Footer ---------- */
.site-footer{background:linear-gradient(160deg,#072528,#0a3b41 60%,#0e5b62);color:#cfe6e6;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:26px}
.footer-grid h4{color:#fff;margin-bottom:12px;font-size:15.5px;letter-spacing:.5px}
.footer-grid a,.footer-grid p{color:#a9c9c9;font-size:14px;display:block;margin:6px 0;transition:color .2s}
.footer-grid a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;font-size:13px;color:#88a9a9;text-align:center}
.footer-bottom a{color:#a9c9c9}
.beian{margin-top:10px;font-size:12.5px;color:#7fa0a0;line-height:2}
.beian a{color:#a9c9c9}
.beian a:hover{color:#fff}

/* ---------- 内页横幅（page-hero） ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(140deg,#072528,#0e7c86 72%,#1f9e8f);
  padding:50px 0 54px;
}
.page-hero::after{content:"";position:absolute;right:-70px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%)}
.page-hero .container{position:relative;z-index:1}
.page-hero .eyebrow{display:inline-block;font-size:12.5px;letter-spacing:2px;opacity:.85;margin-bottom:10px}
.page-hero h1{font-size:28px;font-weight:800;letter-spacing:.5px;margin-bottom:10px;line-height:1.25}
.page-hero p{opacity:.92;max-width:640px;font-size:15px}

/* ---------- 滚动渐显（由 JS 添加 .reveal，无 JS 时不受影响） ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   响应式（min-width，移动优先放大）
   ============================================================ */
@media (min-width:640px){
  .grid.cols-2{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .section h2{font-size:28px}
  .hero h1{font-size:38px}
  .hero .container{text-align:left;align-items:stretch}
  .hero p{margin-left:0}
  .hero-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:32px}
}

@media (min-width:900px){
  :root{--header-h:72px}
  .nav-links{
    position:static;display:flex!important;flex-direction:row;gap:30px;align-items:center;
    background:none;backdrop-filter:none;padding:0;border:none;box-shadow:none;animation:none;
  }
  .nav-links a{padding:6px 0;border:none;width:auto;position:relative}
  .nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent-2))}
  .nav-toggle{display:none}
  .hero{padding:92px 0 100px}
  .hero .container{flex-direction:row;align-items:center;gap:50px}
  .hero-copy{flex:1;min-width:320px}
  .hero h1{font-size:46px}
  .hero p{font-size:18px}
  .hero-visual{flex:0 0 380px;max-width:380px}
  .grid.cols-3{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .section{padding:84px 0}
  .section h2{font-size:32px}
  .section .lead{font-size:16px}
  .card{padding:30px 28px}
  .product{grid-template-columns:1fr 1fr;gap:52px}
  .news-card .cover{height:172px}
  .news-detail h1{font-size:32px}
  .news-detail .cover{height:300px}
  .stats{display:flex;justify-content:center;gap:56px}
  .stat .num{font-size:44px}
  .contact-wrap{grid-template-columns:1fr 1fr;gap:52px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
  .page-hero{padding:76px 0 82px}
  .page-hero h1{font-size:40px}
  .page-hero p{font-size:17px}
}

/* 尊重"减少动态效果"偏好 */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1!important;transform:none!important}
}