/* ===== 时进新官网 · 共享样式 ===== */
:root{
  --navy:#0e2746; --navy-2:#163a63; --blue:#1a63b0; --blue-2:#2f86d8;
  --teal:#0e9e7c; --teal-2:#13b98f; --teal-bg:#e7f6f1;
  --ink:#1c2733; --muted:#5d6b7a; --line:#e7edf4;
  --bg:#f4f7fb; --card:#ffffff; --soft:#eef3fa;
  --shadow:0 10px 30px rgba(14,39,70,.08);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.65;font-size:15px;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.ic{width:24px;height:24px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;}
/* Header */
header.site{position:sticky;top:0;z-index:50;background:#ffffff;
  border-bottom:1px solid var(--line);}
header.site .inner{display:flex;align-items:center;justify-content:space-between;max-width:1280px;margin:0 auto;padding:0 24px;height:88px;gap:16px;}
.nav{display:flex;align-items:center;justify-content:space-between;height:88px;}
.logo{display:flex;align-items:center;gap:12px;}
.logo .mark{width:40px;height:40px;border-radius:11px;
  background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;
  box-shadow:0 6px 16px rgba(26,99,176,.35);}
.logo .txt b{font-size:19px;color:var(--navy);letter-spacing:.5px;}
.logo .txt small{display:block;font-size:10.5px;color:var(--muted);letter-spacing:1.5px;font-weight:500;}
nav.menu{display:flex;gap:10px;font-size:12.5px;font-weight:500;color:#33425a;white-space:nowrap;}
nav.menu a{position:relative;padding:6px 0;}
nav.menu a:hover{color:var(--blue);}
nav.menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--teal);transition:.2s;}
nav.menu a:hover::after{width:100%;}
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--blue);color:#fff;
  padding:10px 20px;border-radius:9px;font-weight:600;font-size:14px;transition:.18s;border:1px solid transparent;cursor:pointer;}
.btn:hover{background:var(--blue-2);transform:translateY(-1px);}
.btn.ghost{background:transparent;color:var(--blue);border-color:var(--blue);}
.cta{display:inline-flex;align-items:center;gap:6px;background:var(--sage,#78A890);color:#fff;
  padding:7px 16px;border-radius:20px;font-weight:600;font-size:12.5px;white-space:nowrap;text-decoration:none;transition:.18s;}
.cta:hover{background:#5a8a70;transform:translateY(-1px);}
.btn.ghost:hover{background:var(--soft);}
.btn.teal{background:var(--teal);}
.btn.teal:hover{background:var(--teal-2);}
.btn.lg{padding:13px 26px;font-size:15px;}
/* page hero (inner pages) */
.page-hero{background:
    radial-gradient(900px 420px at 85% -20%, rgba(19,185,143,.18), transparent 55%),
    linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,var(--blue) 120%);
  color:#fff;padding:56px 0 48px;}
.page-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);border-radius:30px;padding:6px 16px;font-size:13px;margin-bottom:16px;}
.page-hero .eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--teal-2);}
.page-hero h1{font-size:clamp(28px,3.8vw,40px);margin:0 0 12px;font-weight:800;letter-spacing:.5px;line-height:1.2;}
.page-hero p{font-size:16px;opacity:.9;margin:0;max-width:640px;line-height:1.7;}
/* Section */
section{padding:60px 0;}
.sec-head{margin-bottom:36px;max-width:760px;}
.sec-head .tag{display:inline-flex;align-items:center;gap:7px;color:var(--teal);background:var(--teal-bg);
  border-radius:30px;padding:5px 14px;font-size:13px;font-weight:700;margin-bottom:12px;}
.sec-head h2{font-size:clamp(23px,3vw,29px);margin:0 0 8px;color:var(--navy);font-weight:800;letter-spacing:.3px;}
.sec-head p{color:var(--muted);margin:0;font-size:15px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
/* grids shared */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.adv{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 22px;transition:.2s;box-shadow:var(--shadow);}
.adv:hover{transform:translateY(-4px);border-color:#cfe0f3;}
.adv .ico{width:50px;height:50px;border-radius:13px;background:var(--teal-bg);color:var(--teal);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.adv h3{margin:0 0 8px;font-size:17px;color:var(--navy);}
.adv p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.65;}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.prod{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.2s;box-shadow:var(--shadow);}
.prod:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(14,39,70,.13);}
.prod .pic{height:170px;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--blue);border-bottom:1px solid var(--line);overflow:hidden;}
.prod .pic img{width:100%;height:100%;object-fit:contain;padding:12px;box-sizing:border-box;}
.prod .pic picture{display:flex;align-items:center;justify-content:center;width:100%;height:100%;}
/* 案例封面 */
.case .cover{height:158px;background:#fff;border-radius:12px;overflow:hidden;margin-bottom:16px;display:flex;align-items:center;justify-content:center;}
.case .cover img{width:100%;height:100%;object-fit:contain;padding:12px;box-sizing:border-box;}
/* 文章封面 */
.art .cover{height:150px;background:#fff;border-radius:12px;overflow:hidden;margin-bottom:16px;display:flex;align-items:center;justify-content:center;}
.art .cover img{width:100%;height:100%;object-fit:contain;padding:10px;}
/* 工厂画廊 */
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.gal .g{height:200px;border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow);}
.gal .g img{width:100%;height:100%;object-fit:cover;}
/* 现货热销网格 */
.spot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.spot{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:.2s;}
.spot:hover{transform:translateY(-4px);border-color:#cfe0f3;}
.spot .pic{height:264px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line);}
.spot .pic picture{display:flex;align-items:center;justify-content:center;width:100%;height:100%;}
.spot .pic img{width:100%;height:100%;object-fit:contain;padding:12px;box-sizing:border-box;}
.spot .body{padding:16px 18px 20px;}
.spot h3{margin:0 0 6px;font-size:16px;color:var(--navy);}
.spot .meta{font-size:13px;color:var(--muted);line-height:1.65;}
.spot .meta b{color:var(--teal);}
/* 第9格：产品目录 CTA 卡片 */
.spot-catalog{display:flex;flex-direction:column;text-decoration:none;background:linear-gradient(135deg,#f8fafb 0%,#f0f5f1 100%);border:2px dashed #c8d9c7;box-shadow:none;}
.spot-catalog:hover{transform:translateY(-4px);border-color:var(--sage,#78A890);background:linear-gradient(135deg,#f0f5f1 0%,#e8f2ea 100%);}
.spot-catalog .pic{border-bottom:none;height:auto;padding:32px 0 12px;}
.prod .body{padding:18px 20px 22px;}
.prod h3{margin:0 0 7px;font-size:17px;color:var(--navy);}
.prod p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6;}
.prod .more{margin-top:14px;color:var(--blue);font-weight:600;font-size:13.5px;display:inline-flex;align-items:center;gap:5px;}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);}
.case .top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.case .badge{background:var(--navy);color:#fff;border-radius:9px;padding:7px 11px;font-size:13px;font-weight:700;white-space:nowrap;}
.case .ind{color:var(--muted);font-size:13px;}
.case h4{margin:0 0 8px;font-size:16.5px;color:var(--navy);}
.case p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.65;}
.case .tagline{margin-top:14px;font-size:13px;color:var(--teal);font-weight:600;}
.case .block{margin-top:12px;font-size:13px;color:var(--ink);line-height:1.7;}
.case .block b{color:var(--navy);}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step;}
.step{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px 16px;text-align:center;position:relative;box-shadow:var(--shadow);}
.step .num{counter-increment:step;width:42px;height:42px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 14px;font-size:16px;
  box-shadow:0 6px 14px rgba(26,99,176,.3);}
.step .num::before{content:counter(step);}
.step h4{margin:0 0 6px;font-size:15.5px;color:var(--navy);}
.step p{margin:0;font-size:13px;color:var(--muted);}
.ind-grid{display:flex;flex-wrap:wrap;gap:12px;}
.ind-chip{background:var(--card);border:1px solid var(--line);border-radius:30px;padding:10px 20px;font-size:14.5px;color:#33425a;font-weight:500;box-shadow:var(--shadow);}
.ind-chip b{color:var(--teal);}
/* about */
.about{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;}
.about .box{background:var(--soft);border:1px solid var(--line);border-radius:18px;padding:28px;}
.about .box h3{margin:0 0 12px;color:var(--navy);font-size:19px;}
.about .box p{margin:0 0 10px;font-size:14.5px;line-height:1.8;color:#33425a;}
.about .kv{display:grid;grid-template-columns:118px 1fr;gap:13px 16px;font-size:14.5px;}
.about .kv .k{color:var(--muted);font-weight:600;}
.about .kv .v{color:var(--ink);}
/* timeline */
.timeline{position:relative;margin:30px 0 0;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--blue),var(--teal));}
.tl{position:relative;margin-bottom:26px;}
.tl::before{content:"";position:absolute;left:-26px;top:4px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--teal);}
.tl .yr{font-weight:800;color:var(--navy);font-size:17px;}
.tl .txt{color:var(--muted);font-size:14px;margin-top:4px;line-height:1.7;}
/* cert strip */
.cert{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px 34px;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cert .lead h3{margin:0 0 4px;font-size:19px;color:var(--navy);}
.cert .lead p{margin:0;color:var(--muted);font-size:14px;}
.cert .badges{display:flex;gap:14px;flex-wrap:wrap;}
.cert .b{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:11px;padding:10px 16px;background:var(--soft);}
.cert .b .ic{color:var(--teal);}
.cert .b span{font-size:14px;font-weight:600;color:var(--navy);}
/* spec table (Product schema visual) */
.spec{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);}
.spec table{width:100%;border-collapse:collapse;font-size:14px;}
.spec th,.spec td{border-bottom:1px solid var(--line);padding:13px 18px;text-align:left;vertical-align:top;}
.spec tr:last-child td{border-bottom:none;}
.spec th{background:var(--soft);color:var(--navy);font-weight:600;width:170px;white-space:nowrap;}
.spec td{color:var(--ink);}
/* article cards (resources) */
.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.art{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);transition:.2s;}
.art:hover{transform:translateY(-4px);border-color:#cfe0f3;}
.art .cat{display:inline-block;color:var(--teal);background:var(--teal-bg);border-radius:20px;padding:4px 12px;font-size:12.5px;font-weight:700;margin-bottom:12px;}
.art h3{margin:0 0 8px;font-size:17px;color:var(--navy);}
.art p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.7;}
.art .go{margin-top:14px;color:var(--blue);font-weight:600;font-size:13.5px;}
/* faq */
.faq{max-width:860px;margin:0 auto;}
.faq .q{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:17px 22px;margin-bottom:13px;box-shadow:var(--shadow);}
.faq .q h4{margin:0 0 6px;font-size:16px;color:var(--blue);}
.faq .q p{margin:0;font-size:14.5px;color:var(--ink);line-height:1.7;}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;}
.contact-info .row{display:flex;gap:14px;margin-bottom:18px;align-items:flex-start;}
.contact-info .row .ico{width:42px;height:42px;border-radius:11px;background:var(--teal-bg);color:var(--teal);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.contact-info .row .t{font-size:14px;color:var(--muted);}
.contact-info .row .v{font-size:15px;color:var(--ink);font-weight:600;margin-top:2px;}
.form{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);}
.form h3{margin:0 0 18px;color:var(--navy);font-size:18px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:6px;font-weight:600;}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:9px;padding:11px 13px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,99,176,.12);}
.contact-visual{display:grid;grid-template-columns:1.2fr 1fr;gap:26px;margin-top:30px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow);}
.contact-visual .cv-img{height:300px;border-radius:12px;overflow:hidden;}
.contact-visual .cv-img img{width:100%;height:100%;object-fit:cover;}
.contact-visual h3{margin:0 0 12px;font-size:21px;color:var(--navy);}
.contact-visual p{margin:0 0 10px;font-size:14px;color:var(--muted);line-height:1.7;}
/* cta band */
.cta-band{background:linear-gradient(135deg,var(--teal),var(--teal-2));border-radius:20px;padding:38px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;color:#fff;box-shadow:0 14px 34px rgba(14,158,124,.3);}
.cta-band h3{margin:0 0 6px;font-size:23px;font-weight:800;}
.cta-band p{margin:0;opacity:.92;font-size:15px;}
.cta-band .btn{background:#fff;color:var(--teal);}
.cta-band .btn:hover{background:#eafaf4;}
/* footer */
footer{background:var(--navy);color:#c4d1e0;padding:48px 0 28px;margin-top:56px;font-size:14px;}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:34px;}
footer h4{color:#fff;margin:0 0 16px;font-size:15px;}
footer a{color:#c4d1e0;}
footer a:hover{color:#fff;}
footer .copy{border-top:1px solid #284366;margin-top:32px;padding-top:20px;text-align:center;color:#8497ad;font-size:13px;}
/* breadcrumb */
.crumbs{font-size:13px;color:var(--muted);margin:18px 0 0;}
.crumbs a{color:var(--blue);}
.crumbs span{margin:0 8px;color:#b6c2d0;}
/* ===== 详情页 / 文章页专属 ===== */
.detail-hero{padding:48px 0 8px;}
.detail-hero .wrap{display:flex;gap:36px;align-items:flex-start;flex-wrap:wrap;}
.detail-hero .pic{flex:0 0 320px;max-width:320px;aspect-ratio:1/1;}
.detail-hero .pic img{width:100%;height:100%;object-fit:contain;border:1px solid var(--line);border-radius:16px;background:#fff;}
.detail-hero .info{flex:1;min-width:300px;}
.detail-hero h1{font-size:clamp(26px,3.4vw,36px);margin:6px 0 12px;color:var(--navy);font-weight:800;letter-spacing:.3px;}
.detail-hero .sub{font-size:16px;color:var(--muted);line-height:1.7;margin:0 0 16px;}
.tagrow{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px;}
.tagrow .chip{font-size:12.5px;color:var(--teal);background:var(--teal-bg);border:1px solid #cdeee2;padding:5px 11px;border-radius:999px;}
.article{padding:30px 0 10px;}
.article .lead{font-size:16.5px;line-height:1.9;color:#2a3b52;margin:0 0 22px;padding:18px 22px;background:var(--soft);border-left:4px solid var(--teal);border-radius:0 12px 12px 0;}
.article h2{font-size:22px;color:var(--navy);margin:30px 0 12px;font-weight:800;}
.article h3{font-size:17px;color:var(--ink);margin:22px 0 8px;font-weight:700;}
.article p{font-size:15px;line-height:1.9;color:#33425a;margin:0 0 14px;}
.article ul{margin:0 0 16px;padding-left:20px;}
.article li{font-size:14.5px;line-height:1.85;color:#33425a;margin:0 0 7px;}
.article .kv{display:grid;grid-template-columns:140px 1fr;gap:11px 16px;font-size:14.5px;margin:0 0 20px;}
.article .kv .k{color:var(--muted);font-weight:600;}
.article .kv .v{color:var(--ink);}
.rel{margin:36px 0 10px;padding:26px 0;border-top:1px solid var(--line);}
.rel h3{font-size:18px;color:var(--navy);margin:0 0 16px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.rel-card{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--card);transition:.18s;}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--teal);}
.rel-card .pic{height:120px;overflow:hidden;background:#fff;}
.rel-card .pic img{width:100%;height:100%;object-fit:contain;}
.rel-card .body{padding:12px 14px;}
.rel-card .body .cat{font-size:12px;color:var(--teal);}
.rel-card .body h4{font-size:14.5px;color:var(--navy);margin:4px 0 0;font-weight:700;line-height:1.4;}
/* ===== 首页工艺板块（丝印 / 贴标 / 烫金） ===== */
.craft-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:6px 0 26px;}
.craft-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;transition:.2s;}
.craft-card:hover{box-shadow:0 10px 30px rgba(20,40,70,.08);transform:translateY(-3px);}
.craft-card .ci{width:54px;height:54px;border-radius:14px;background:var(--teal-bg);color:var(--teal);display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.craft-card h3{margin:0 0 8px;color:var(--navy);font-size:19px;font-weight:800;}
.craft-card p{margin:0 0 12px;color:#4a5b73;font-size:14px;line-height:1.7;}
.craft-meta{list-style:none;margin:0;padding:0;font-size:13px;color:var(--muted);}
.craft-meta li{padding:6px 0;border-top:1px dashed var(--line);}
.craft-cta{display:flex;align-items:center;justify-content:space-between;gap:18px;background:var(--soft);border-radius:14px;padding:20px 24px;flex-wrap:wrap;}
.craft-cta p{margin:0;color:#33425a;font-size:14.5px;line-height:1.7;}
/* ===== 移动端导航：汉堡按钮 + 抽屉菜单 ===== */
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  width:44px;height:44px;flex-shrink:0;background:transparent;border:1px solid var(--line);
  border-radius:10px;cursor:pointer;padding:0;}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);border-radius:2px;
  transition:transform .25s,opacity .2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-nav{display:none;position:fixed;top:88px;left:0;right:0;bottom:0;z-index:60;
  background:#fff;padding:8px 24px 48px;overflow-y:auto;
  box-shadow:0 12px 30px rgba(14,39,70,.12);}
.mobile-nav.open{display:block;}
.mobile-nav a{display:block;padding:15px 2px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);font-weight:500;}
.mobile-nav a:last-of-type{border-bottom:none;}
.mobile-nav a:hover,.mobile-nav a:active{color:var(--blue);}
.mobile-nav .mn-cta{display:block;margin-top:22px;text-align:center;}
/* 图片占位防抖动（CLS） */
.prod .pic,.spot .pic,.case .cover,.art .cover,.gal .g,.rel-card .pic{position:relative;}

/* ===== 响应式：4 段断点 ===== */
/* ① 平板横屏 */
@media(max-width:1024px){
  .steps{grid-template-columns:repeat(3,1fr);}
  .gal{grid-template-columns:repeat(3,1fr);}
  .craft-grid{grid-template-columns:repeat(3,1fr);}
}
/* ② 平板竖屏 / 大手机 */
@media(max-width:900px){
  .craft-grid{grid-template-columns:repeat(2,1fr);}
  .adv-grid{grid-template-columns:repeat(2,1fr);} .prod-grid{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:1fr;} .art-grid{grid-template-columns:1fr;}
  .spot-grid{grid-template-columns:repeat(2,1fr);} .gal{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);} .about{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;} footer .cols{grid-template-columns:repeat(2,1fr);}
  .contact-visual{grid-template-columns:1fr;} .contact-visual .cv-img{height:200px;}
  .detail-hero .pic{flex:0 0 100%;max-width:100%;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  nav.menu{display:none;}
  .nav-toggle{display:flex;}
  section{padding:48px 0;}
}
/* ③ 手机 */
@media(max-width:600px){
  header.site .nav > .btn{display:none;}
  header.site .logo img{height:46px !important;}
  .adv-grid{grid-template-columns:1fr;}
  .prod-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .craft-grid{grid-template-columns:1fr;}
  /* C：产品分类卡改大图入口（与双列图册页形成层次差） */
  .prod .pic{height:200px;padding:18px;}
  /* A：现货区手机端双列（产品中心页，与首页一致） */
  .spot-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .spot .pic{height:auto;aspect-ratio:1/1;padding:14px;}
  .spot .body{padding:12px 13px 14px;}
  .spot h3{font-size:14.5px;}
  .spot .meta{font-size:12px;line-height:1.55;}
  /* B：详情页相关产品手机端双列（27 页） */
  .rel-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .rel-card .pic{height:auto;aspect-ratio:1/1;}
  .rel-card .body{padding:10px 12px 13px;}
  .rel-card .body .cat{font-size:11px;}
  .rel-card .body h4{font-size:13px;}
  footer .cols{grid-template-columns:1fr;}
  .about .kv{grid-template-columns:96px 1fr;}
  .article .kv{grid-template-columns:110px 1fr;}
  .spec th{width:120px;}
  section{padding:38px 0;}
  .wrap{padding:0 16px;}
  .cta-band{padding:26px 20px;}
  .cert{padding:22px 18px;}
}
/* ④ 小屏手机 */
@media(max-width:400px){
  .gal{grid-template-columns:repeat(2,1fr);}
  .page-hero{padding:36px 0 32px;}
  .sec-head h2{font-size:22px;}
}

/* 页脚备案号链接 */
footer .copy a{color:#8497ad;text-decoration:none;}footer .copy a:hover{color:#9fd0ff;text-decoration:underline;}