:root{
  --navy:#0a2e5c;
  --blue:#1a4d8f;
  --blue-soft:#e8f0fa;
  --accent:#e8743b;
  --accent-dark:#c95a26;
  --ink:#1c2b3a;
  --gray:#5b6b7b;
  --line:#d8e0ea;
  --bg-soft:#f5f8fc;
  --bg:#ffffff;
  --ok:#2e8b57;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","微软雅黑","PingFang SC","Hiragino Sans GB",sans-serif;
  color:var(--ink);background:var(--bg);font-size:15px;line-height:1.7;
}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--accent-dark)}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 4px rgba(10,46,92,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:baseline;gap:8px;font-weight:700;color:var(--navy);font-size:20px;letter-spacing:.5px}
.brand em{font-style:normal;color:var(--accent)}
.brand small{font-size:12px;color:var(--gray);font-weight:400;letter-spacing:0}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:6px;color:var(--ink);font-size:15px;font-weight:500}
.nav-links a:hover{background:var(--blue-soft);color:var(--blue)}
.nav-links a.active{background:var(--navy);color:#fff}
.btn{display:inline-block;padding:9px 20px;border-radius:6px;background:var(--accent);color:#fff;font-weight:600;transition:.15s}
.btn:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{background:transparent;border:1px solid var(--navy);color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}

/* Hero */
.hero{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;padding:64px 0 56px}
.hero h1{font-size:34px;line-height:1.3;margin-bottom:14px;font-weight:700}
.hero p{font-size:17px;opacity:.92;max-width:760px;margin-bottom:24px}
.hero .tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero .tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:5px 14px;border-radius:999px;font-size:14px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Sections */
section{padding:54px 0}
.section-head{margin-bottom:30px}
.section-head h2,.section-head h1{font-size:26px;color:var(--navy);margin-bottom:8px}
.section-head p{color:var(--gray);max-width:780px}
.bg-soft{background:var(--bg-soft)}

/* Grids */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px;transition:.15s}
.card:hover{box-shadow:0 6px 22px rgba(10,46,92,.08);transform:translateY(-2px)}
.card h3{color:var(--navy);font-size:18px;margin-bottom:8px}
.card .meta{color:var(--gray);font-size:13px;margin-bottom:10px}
.card p{color:var(--ink);font-size:14.5px}
.card .tag{display:inline-block;background:var(--blue-soft);color:var(--blue);font-size:12px;padding:2px 10px;border-radius:999px;margin:0 6px 6px 0}

/* Product cards */
.prod-card .spec-mini{font-size:13px;color:var(--gray);margin-top:8px;border-top:1px dashed var(--line);padding-top:10px}
.prod-card .spec-mini b{color:var(--ink)}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
thead th{background:var(--navy);color:#fff;font-weight:600}
tbody tr:nth-child(even) td{background:#fafcfe}
.note{font-size:13px;color:var(--gray);border-left:3px solid var(--accent);background:#fdf7f3;padding:10px 14px;border-radius:0 6px 6px 0;margin:14px 0}

/* Trust strip */
.trust-strip{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin-top:24px}
.trust-strip .pill{display:flex;flex-direction:column;align-items:center;min-width:150px;padding:16px 20px;border:1px solid var(--line);border-radius:10px;background:#fff}
.trust-strip .pill b{font-size:24px;color:var(--navy)}
.trust-strip .pill span{font-size:13px;color:var(--gray)}

/* Paper wall */
.wall-controls{margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px}
.wall-controls button{border:1px solid var(--line);background:#fff;color:var(--ink);padding:6px 14px;border-radius:999px;cursor:pointer;font-size:13px}
.wall-controls button.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.paper-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.paper-card{border:1px solid var(--line);border-radius:10px;padding:16px;background:#fff;display:flex;flex-direction:column;gap:6px}
.paper-card .ptag{font-size:11px;background:var(--blue-soft);color:var(--blue);padding:2px 9px;border-radius:999px;align-self:flex-start}
.paper-card h4{font-size:15px;color:var(--navy);line-height:1.4}
.paper-card .src{font-size:12.5px;color:var(--gray)}
.paper-card .quote{font-size:13px;color:var(--ink);border-left:2px solid var(--accent);padding-left:10px;margin-top:4px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.hl{color:var(--accent);font-weight:700}
.paper-card .val{font-size:12.5px;color:var(--gray);margin-top:2px}
.count-badge{font-size:14px;color:var(--gray);margin-bottom:14px}

/* Application detail */
.app-hero{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:26px;margin-bottom:24px}
.flow{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:18px 0}
.flow .step{flex:1;min-width:160px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px}
.flow .step b{color:var(--navy);display:block;margin-bottom:4px}
.flow .arrow{color:var(--accent);font-size:22px}

/* Form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
form label{display:block;font-size:14px;font-weight:600;margin:14px 0 6px;color:var(--navy)}
form input,form select,form textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:7px;font-size:14px;font-family:inherit}
form textarea{resize:vertical;min-height:120px}
.contact-info p{margin-bottom:10px;color:var(--ink)}
.contact-info b{color:var(--navy)}

/* Content posts */
.post-card{display:block;border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin-bottom:16px;background:#fff}
.post-card:hover{box-shadow:0 4px 16px rgba(10,46,92,.08)}
.post-card .cat{font-size:12px;color:var(--accent);font-weight:600}
.post-card h3{color:var(--navy);font-size:19px;margin:4px 0 6px}
.post-card .date{font-size:12.5px;color:var(--gray)}
.post-card p{color:var(--ink);font-size:14.5px;margin-top:6px}
.article{max-width:820px;margin:0 auto}
.article h1{font-size:30px;color:var(--navy);margin-bottom:8px}
.article .meta{color:var(--gray);font-size:14px;margin-bottom:24px}
.article h2{color:var(--blue);font-size:22px;margin:28px 0 10px}
.article p{margin-bottom:14px}

/* Footer */
.site-footer{background:var(--navy);color:#cfdcec;padding:40px 0 24px;margin-top:30px}
.site-footer a{color:#cfdcec}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer p,.site-footer li{font-size:13.5px;line-height:1.9;list-style:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:16px;font-size:12.5px;color:#9fb2c9}

/* Misc */
.breadcrumb{font-size:13px;color:var(--gray);padding:14px 0}
.breadcrumb a{color:var(--blue)}
.crumbs{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.lead{font-size:16px;color:var(--ink);max-width:820px}
.text-center{text-align:center}
.mt{margin-top:22px}
@media(max-width:860px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media(max-width:560px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero h1{font-size:26px}
}

/* ---------- 媒体占位槽位（无素材时显示提示，放入文件即自动显示） ---------- */
.media-slot{position:relative;display:flex;align-items:center;justify-content:center;
  background:repeating-linear-gradient(45deg,#f3f6fb,#f3f6fb 12px,#eef3fa 12px,#eef3fa 24px);
  border:1px dashed var(--line);border-radius:10px;overflow:hidden;color:var(--gray);min-height:180px}
.media-slot img,.media-slot video{width:100%;height:100%;object-fit:cover;display:block}
.media-slot .ph{padding:18px;text-align:center;font-size:13px;line-height:1.7}
.media-slot .ph b{color:var(--blue);display:block;margin-bottom:4px;font-size:14px}
.media-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0}
.media-row .media-slot{min-height:200px}
.media-wide{height:320px;margin:18px 0}

/* ---------- FAQ 区块 ---------- */
.faq{margin:30px 0 8px}
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:10px;padding:14px 18px;background:#fff}
.faq-q{font-size:16px;color:var(--navy);margin:0 0 6px}
.faq-a{font-size:14.5px;color:var(--ink);line-height:1.85}

/* ---------- 资质摘要卡 ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:20px 0}
.cert-card{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff;display:flex;flex-direction:column;gap:8px}
.cert-card .cert-thumb{width:100%;height:150px}
.cert-card h3{font-size:16px;color:var(--navy);margin:4px 0 0}
.cert-card dl{margin:0;font-size:13.5px;line-height:1.8;color:var(--ink)}
.cert-card dt{color:var(--gray);font-weight:600;display:inline-block;min-width:64px}
.cert-card dd{display:inline;margin:0 0 0 4px}
.cert-card .cert-actions{margin-top:auto;padding-top:8px}
.cert-card .cert-actions a{display:inline-block;font-size:13px;color:#fff;background:var(--blue);
  padding:7px 14px;border-radius:8px;text-decoration:none}
.cert-card .cert-actions a:hover{opacity:.9}
@media(max-width:560px){.media-wide{height:200px}}

/* ---------- 注册商标卡 ---------- */
.tm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:20px 0}
.tm-card{border:1px solid var(--line);border-radius:12px;padding:14px;background:#fff}
.tm-card img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:8px;margin-bottom:10px}
.tm-card h3{font-size:15px;color:var(--navy);margin:0 0 6px}
.tm-card dl{margin:0;font-size:12.5px;line-height:1.75;color:var(--ink)}
.tm-card dt{color:var(--gray);font-weight:600;display:inline-block;min-width:56px}
.tm-card dd{display:inline;margin:0 0 0 4px}

/* ---------- Hero 图文两栏（左文右媒体，仅视觉增强，不影响文本内容） ---------- */
.hero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:36px;align-items:center}
.hero-media img,.hero-media video{width:100%;height:320px;object-fit:cover;border-radius:12px;display:block;box-shadow:0 14px 34px rgba(0,0,0,.28)}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr}.hero-media img,.hero-media video{height:220px}}

/* ---------- 视频原比例完整显示 ---------- */
.video-slot{height:auto;min-height:0;background:#0e1626;border:1px solid #1d2a44;border-radius:12px}
.video-slot video{width:auto;max-width:100%;height:auto;max-height:480px;object-fit:contain;margin:0 auto;display:block;border-radius:12px}
.hero-video video{width:auto;max-width:100%;height:auto;max-height:480px;object-fit:contain;margin:0 auto}
@media(max-width:560px){.video-slot video{max-height:300px}}
/* ---------- 资质卡缩略图原比例完整显示 ---------- */
.cert-thumb{height:auto;min-height:0;background:#fff;border:1px solid var(--line)}
.cert-thumb img{width:100%;height:auto;object-fit:contain}
/* ---------- 资质/商标卡一行结论 ---------- */
.cert-note{margin:0;font-size:13.5px;line-height:1.6;color:var(--ink)}