/* =========================================================
   靖江市万达金属制品厂 — 企业官网
   WANDA METAL · Style Sheet
   ========================================================= */
:root{
  --green-900:#0B3D21;
  --green-800:#14532D;
  --green-700:#1B7A43;
  --green-600:#23985A;
  --green-050:#EFF6F1;
  --ink:#101828;
  --ink-2:#344054;
  --muted:#667085;
  --line:#E7EAE8;
  --bg:#FFFFFF;
  --bg-soft:#F6F8F7;
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --shadow-md:0 10px 30px -8px rgba(16,24,40,.14);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Segoe UI",Arial,sans-serif;
  --container:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:44px;height:44px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(145deg,var(--green-700),var(--green-900));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;letter-spacing:0;
  box-shadow:0 4px 10px -3px rgba(20,83,45,.5);
}
.brand-text{line-height:1.2}
.brand-text b{display:block;font-size:19px;font-weight:700;letter-spacing:.06em}
.brand-text span{display:block;font-size:10.5px;color:var(--muted);letter-spacing:.22em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:10px 16px;border-radius:8px;font-size:15.5px;color:var(--ink-2);
  font-weight:500;transition:.2s;
}
.nav-links a:hover{color:var(--green-700);background:var(--green-050)}
.nav-links a.active{color:var(--green-700);font-weight:600}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;margin-left:14px;
  padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;color:#fff !important;
  background:linear-gradient(135deg,var(--green-700),var(--green-800));
  box-shadow:0 6px 16px -6px rgba(20,83,45,.55);transition:.25s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 10px 22px -6px rgba(20,83,45,.6);background:var(--green-800)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px;stroke:var(--ink)}

/* ---------- 英雄区 ---------- */
.hero{
  position:relative;min-height:640px;display:flex;flex-direction:column;justify-content:center;
  color:#fff;overflow:hidden;
  background:#0B1F14;
}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.5;transform:scale(1.02)}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,26,16,.92) 0%,rgba(7,26,16,.72) 45%,rgba(7,26,16,.28) 100%);
}
.hero-inner{position:relative;z-index:2;padding:120px 0 90px;max-width:760px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border:1px solid rgba(255,255,255,.28);border-radius:100px;
  font-size:13.5px;letter-spacing:.14em;color:rgba(255,255,255,.92);margin-bottom:28px;
}
.hero-kicker i{width:7px;height:7px;border-radius:50%;background:#4ADE80;display:inline-block}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.22;font-weight:700;letter-spacing:.02em}
.hero h1 em{font-style:normal;color:#6EE7A0}
.hero p.lead{
  margin-top:22px;font-size:clamp(15px,1.6vw,18px);color:rgba(255,255,255,.82);
  max-width:600px;line-height:1.9;
}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 30px;border-radius:10px;
  font-size:16px;font-weight:600;transition:.25s;cursor:pointer;border:0;
}
.btn-primary{background:linear-gradient(135deg,#1B7A43,#14532D);color:#fff;box-shadow:0 10px 26px -8px rgba(27,122,67,.65)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -8px rgba(27,122,67,.7)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.hero-stats{
  position:relative;z-index:2;width:100%;margin-top:40px;
  border-top:1px solid rgba(255,255,255,.16);
  background:rgba(6,20,12,.45);backdrop-filter:blur(6px);
}
.hero-stats .container{
  display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:26px;padding-bottom:26px;
}
.stat b{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:700;color:#fff;line-height:1.15}
.stat b i{font-style:normal;font-size:.55em;margin-left:2px;color:#6EE7A0}
.stat span{display:block;font-size:13px;color:rgba(255,255,255,.62);margin-top:6px;letter-spacing:.08em}

/* ---------- 内页头部 ---------- */
.page-hero{
  position:relative;color:#fff;background:var(--green-900);overflow:hidden;
  padding:86px 0 78px;
}
.page-hero .crumbs{position:relative;z-index:2}
.page-hero h1{position:relative;z-index:2;font-size:clamp(30px,4vw,44px);font-weight:700;margin-top:10px;letter-spacing:.03em}
.page-hero p{position:relative;z-index:2;margin-top:14px;max-width:640px;color:rgba(255,255,255,.75);font-size:16.5px}
.page-hero .bg-deco{
  position:absolute;inset:0;opacity:.5;
  background:
    radial-gradient(600px 300px at 85% 20%,rgba(35,152,90,.45),transparent 70%),
    radial-gradient(500px 280px at 10% 90%,rgba(27,122,67,.35),transparent 70%);
}
.page-hero .lines{
  position:absolute;inset:0;opacity:.14;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.5) 0 1px,transparent 1px 120px);
}
.crumbs{font-size:13.5px;color:rgba(255,255,255,.6);letter-spacing:.1em}
.crumbs a{color:rgba(255,255,255,.75)}
.crumbs a:hover{color:#6EE7A0}
.crumbs .sep{margin:0 10px;opacity:.5}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--green-900);color:#fff}
.sec-head{max-width:720px;margin-bottom:56px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  letter-spacing:.2em;color:var(--green-700);text-transform:uppercase;margin-bottom:16px;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--green-600)}
.sec-head.center .kicker::after{content:"";width:26px;height:2px;background:var(--green-600)}
.section.dark .kicker{color:#6EE7A0}
.section.dark .kicker::before{background:#6EE7A0}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;letter-spacing:.03em;line-height:1.35}
.section.dark h2{color:#fff}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16.5px}
.section.dark p{color:rgba(255,255,255,.72)}

/* 卡片网格 */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;transition:.3s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D7E4DB}
.card .icon{
  width:54px;height:54px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--green-050),#E3F0E8);margin-bottom:22px;
}
.card .icon svg{width:27px;height:27px;stroke:var(--green-700);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:19px;font-weight:600;margin-bottom:12px;letter-spacing:.02em}
.card p{color:var(--muted);font-size:15px}
.card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.card .tags i{
  font-style:normal;font-size:12.5px;color:var(--green-800);background:var(--green-050);
  border:1px solid #DCEAE1;padding:4px 12px;border-radius:100px;
}
.card .num{
  position:absolute;top:22px;right:26px;font-size:44px;font-weight:700;
  color:var(--green-050);line-height:1;letter-spacing:-.02em;user-select:none;
}

/* 优势分栏 */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split.rev{grid-template-columns:1fr 1.05fr}
.split .visual{position:relative}
.split .visual img{border-radius:18px;box-shadow:var(--shadow-md);width:100%;object-fit:cover}
.split .visual .float{
  position:absolute;right:-18px;bottom:-22px;background:#fff;border-radius:14px;
  box-shadow:var(--shadow-md);padding:20px 26px;display:flex;gap:16px;align-items:center;
}
.split .visual .float b{font-size:30px;color:var(--green-700);font-weight:700}
.split .visual .float span{font-size:13px;color:var(--muted);display:block;line-height:1.4}
.check-list li{display:flex;gap:14px;padding:15px 0;border-bottom:1px dashed var(--line);align-items:flex-start}
.check-list li:last-child{border-bottom:0}
.check-list .ck{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;margin-top:4px;
  background:var(--green-050);display:flex;align-items:center;justify-content:center;
}
.check-list .ck svg{width:13px;height:13px;stroke:var(--green-700);stroke-width:2.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
.check-list b{display:block;font-size:16.5px;font-weight:600;margin-bottom:3px}
.check-list span{color:var(--muted);font-size:14.5px}

/* 工艺流程 */
.flow{display:grid;grid-template-columns:repeat(8,1fr);gap:0;position:relative}
.flow-step{position:relative;text-align:center;padding:0 8px}
.flow-step .dot{
  width:52px;height:52px;margin:0 auto;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1.5px solid #CDE2D5;color:var(--green-700);font-weight:700;font-size:17px;
  box-shadow:var(--shadow-sm);position:relative;z-index:2;transition:.3s;
}
.flow-step:hover .dot{background:var(--green-700);color:#fff;border-color:var(--green-700)}
.flow-step::after{
  content:"";position:absolute;top:26px;left:calc(50% + 30px);right:calc(-50% + 30px);
  height:1.5px;background:repeating-linear-gradient(90deg,#CDE2D5 0 6px,transparent 6px 12px);
}
.flow-step:last-child::after{display:none}
.flow-step h4{margin-top:18px;font-size:15px;font-weight:600}
.flow-step p{font-size:12.5px;color:var(--muted);margin-top:4px;line-height:1.5}

/* 产品展示 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px}
.filter-bar button{
  padding:10px 22px;border-radius:100px;border:1px solid var(--line);background:#fff;
  font-size:14.5px;font-family:var(--font);color:var(--ink-2);cursor:pointer;transition:.25s;
}
.filter-bar button:hover{border-color:var(--green-600);color:var(--green-700)}
.filter-bar button.on{background:var(--green-800);border-color:var(--green-800);color:#fff;box-shadow:0 6px 16px -6px rgba(20,83,45,.5)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.3s;animation:fadeIn .45s ease both;
}
.product-item.hide{display:none}
.product-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.product-item .ph{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--bg-soft)}
.product-item .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.product-item:hover .ph img{transform:scale(1.06)}
.product-item .ph .badge{
  position:absolute;top:14px;left:14px;font-size:12px;letter-spacing:.08em;
  background:rgba(11,61,33,.85);color:#fff;padding:5px 13px;border-radius:100px;backdrop-filter:blur(4px);
}
.product-item .cap{padding:18px 22px 20px}
.product-item .cap b{font-size:16px;font-weight:600;display:block}
.product-item .cap span{font-size:13px;color:var(--muted)}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 能力表 */
.cap-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.cap-table .row{display:grid;grid-template-columns:220px 1fr;border-bottom:1px solid var(--line)}
.cap-table .row:last-child{border-bottom:0}
.cap-table .row>div{padding:22px 28px}
.cap-table .row .k{
  background:var(--green-050);color:var(--green-800);font-weight:600;font-size:15px;
  display:flex;align-items:center;gap:10px;
}
.cap-table .row .v{font-size:15px;color:var(--ink-2)}
.cap-table .row .v em{font-style:normal;color:var(--muted);font-size:13.5px}

/* 证书 */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cert{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  text-align:center;transition:.3s;
}
.cert:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.cert .img{
  height:250px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:8px;background:var(--bg-soft);
}
.cert .img img{max-height:100%;width:auto;object-fit:contain}
.cert b{display:block;margin-top:16px;font-size:15.5px;font-weight:600}
.cert span{font-size:12.5px;color:var(--muted)}

/* 客户 */
.logo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.logo-cell{
  background:#fff;border:1px solid var(--line);border-radius:12px;height:110px;
  display:flex;align-items:center;justify-content:center;padding:18px;transition:.3s;
}
.logo-cell:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.logo-cell img{max-height:64px;max-width:80%;object-fit:contain;filter:grayscale(12%);opacity:.92}
.section.dark .logo-cell{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.section.dark .logo-cell img{filter:none;opacity:.95}

/* CTA */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--green-900),var(--green-700));color:#fff}
.cta-band .container{
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  padding-top:64px;padding-bottom:64px;position:relative;z-index:2;flex-wrap:wrap;
}
.cta-band h3{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:.03em}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.75);font-size:15.5px}
.cta-band .btn{background:#fff;color:var(--green-800)}
.cta-band .btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px -10px rgba(0,0,0,.4)}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.35) 0 1px,transparent 1px 130px);
  opacity:.1;
}

/* 页脚 */
.site-footer{background:#0A1F14;color:rgba(255,255,255,.68);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer-grid h4{color:#fff;font-size:15.5px;font-weight:600;margin-bottom:20px;letter-spacing:.06em}
.footer-grid p,.footer-grid li{font-size:14px;line-height:2;color:rgba(255,255,255,.6)}
.footer-grid a:hover{color:#6EE7A0}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer-brand .brand-mark{width:42px;height:42px}
.footer-brand b{color:#fff;font-size:18px;letter-spacing:.06em}
.footer-brand span{font-size:10px;letter-spacing:.2em;color:rgba(255,255,255,.5);display:block}
.footer-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-contact svg{width:16px;height:16px;stroke:#6EE7A0;fill:none;stroke-width:1.8;margin-top:7px;flex:0 0 auto;stroke-linecap:round;stroke-linejoin:round}
.footer-contact a{color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.35);word-break:break-all}
.footer-contact a:hover{border-bottom-color:#6EE7A0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.4);flex-wrap:wrap;
}

/* 联系页 */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:64px}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.3s;
}
.contact-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.contact-card .icon{
  width:48px;height:48px;border-radius:12px;background:var(--green-050);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.contact-card .icon svg{width:23px;height:23px;stroke:var(--green-700);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.contact-card b{display:block;font-size:15.5px;font-weight:600;margin-bottom:6px}
.contact-card p{font-size:14.5px;color:var(--muted);line-height:1.7;word-break:break-all}
.contact-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px;box-shadow:var(--shadow-sm)}
.form-card h3{font-size:21px;font-weight:700;margin-bottom:6px}
.form-card>p{color:var(--muted);font-size:14.5px;margin-bottom:28px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field label i{color:#D92D20;font-style:normal;margin-left:3px}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:9px;
  font-size:14.5px;font-family:var(--font);color:var(--ink);background:var(--bg-soft);transition:.2s;outline:none;
}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--green-600);background:#fff;box-shadow:0 0 0 3px rgba(35,152,90,.12);
}
.field textarea{min-height:130px;resize:vertical}
.form-card .btn{width:100%;justify-content:center}
.form-note{font-size:12.5px;color:var(--muted);text-align:center;margin-top:14px}
.map-card{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#fff}
.map-card img{width:100%;height:340px;object-fit:cover}
.map-card .map-info{padding:24px 28px}
.map-card .map-info b{font-size:16px}
.map-card .map-info p{color:var(--muted);font-size:14px;margin-top:6px}
.contact-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.mini-card img{height:190px;width:100%;object-fit:cover}
.mini-card .pad{padding:20px 24px}
.mini-card .pad b{font-size:15.5px}
.mini-card .pad p{font-size:13.5px;color:var(--muted);margin-top:4px}

/* 关于页 */
.timeline{position:relative;padding-left:0}
.timeline .t-item{display:grid;grid-template-columns:140px 1fr;gap:32px;padding:26px 0;border-bottom:1px dashed var(--line)}
.timeline .t-item:last-child{border-bottom:0}
.timeline .year{font-size:26px;font-weight:700;color:var(--green-700);line-height:1.3}
.timeline .body b{font-size:17px;font-weight:600;display:block;margin-bottom:6px}
.timeline .body p{color:var(--muted);font-size:15px}
.org-chart{display:flex;flex-direction:column;align-items:center;gap:0}
.org-node{
  background:#fff;border:1.5px solid #CDE2D5;border-radius:10px;padding:12px 34px;
  font-weight:600;font-size:15.5px;color:var(--green-800);box-shadow:var(--shadow-sm);
}
.org-node.top{background:linear-gradient(135deg,var(--green-700),var(--green-900));color:#fff;border-color:transparent;font-size:17px;padding:15px 44px}
.org-line{width:1.5px;height:26px;background:#CDE2D5}
.org-branches{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;width:100%;position:relative;margin-top:0}
.org-branches::before{
  content:"";position:absolute;top:-26px;left:12.5%;right:12.5%;height:1.5px;background:#CDE2D5;
}
.org-branches .col{display:flex;flex-direction:column;align-items:center;gap:10px}
.org-branches .col::before{content:"";width:1.5px;height:26px;background:#CDE2D5}
.org-branch{
  width:100%;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;
  padding:14px 12px;text-align:center;
}
.org-branch b{display:block;font-size:14.5px;color:var(--ink)}
.org-branch span{font-size:12px;color:var(--muted)}
.org-team{margin-top:20px;width:100%;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:16px 24px;text-align:center}
.org-team b{font-size:14px;color:var(--green-800);display:block;margin-bottom:4px}
.org-team p{font-size:13.5px;color:var(--muted)}

/* 数据带 */
.metric-band{background:var(--bg-soft);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:36px 26px;text-align:center;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric b{font-size:clamp(28px,3vw,40px);font-weight:700;color:var(--green-800);line-height:1.1}
.metric b i{font-style:normal;font-size:.5em;margin-left:2px}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);letter-spacing:.05em}

/* FAQ */
.faq-list{max-width:840px;margin:0 auto}
.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:.25s}
.faq[open]{box-shadow:var(--shadow-md);border-color:#CDE2D5}
.faq summary{cursor:pointer;padding:20px 26px;font-weight:600;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;line-height:1;color:var(--green-700);transition:.25s;flex:0 0 auto;font-weight:400}
.faq[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 26px 22px;color:var(--muted);font-size:14.5px}

/* ---------- 行业动态 ---------- */
.news-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.news-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin-bottom:16px;transition:.28s}
.news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:#D7E4DB}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.news-meta time{font-size:13px;color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:3px 12px;border-radius:100px;white-space:nowrap}
.pill-industry{background:var(--green-050);color:var(--green-800);border:1px solid #D3E7DA}
.pill-policy{background:#EEF4FF;color:#1D4ED8;border:1px solid #D6E2FF}
.pill-association{background:#FFF6E5;color:#B54708;border:1px solid #FDE3B0}
.pill-tech{background:#F4F0FF;color:#6D28D9;border:1px solid #E3DAFF}
.news-item h3{font-size:18px;font-weight:600;line-height:1.55;margin-bottom:10px}
.news-item h3 a:hover{color:var(--green-700)}
.news-item p{color:var(--muted);font-size:14.5px}
.news-src{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.news-src b{color:var(--ink-2)}
.news-src a{color:var(--green-700);font-weight:600}
.news-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.side-card h4{font-size:15.5px;font-weight:600;margin-bottom:14px}
.src-list li{font-size:13.5px;padding:7px 0;color:var(--ink-2);display:flex;gap:9px;align-items:center;border-bottom:1px dashed var(--line)}
.src-list li:last-child{border-bottom:0}
.src-list .dot{width:6px;height:6px;border-radius:50%;background:var(--green-600);flex:0 0 auto}
.notice{font-size:12.5px;color:var(--muted);line-height:1.85}
.empty-hint{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:40px 28px;text-align:center;color:var(--muted);font-size:14.5px}

/* ---------- 技术专题 ---------- */
.topic{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 36px;margin-bottom:22px;transition:.3s}
.topic:hover{box-shadow:var(--shadow-md)}
.topic h3{font-size:21px;font-weight:700;letter-spacing:.02em}
.topic .sub{color:var(--green-700);font-size:14px;font-weight:600;margin-top:7px}
.topic p.lead{margin-top:16px;color:var(--ink-2);font-size:15.5px}
.topic ul.pts{margin-top:18px}
.topic ul.pts li{display:flex;gap:12px;padding:9px 0;font-size:14.5px;color:var(--muted)}
.topic ul.pts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green-600);margin-top:10px;flex:0 0 auto}
.topic .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.topic .tags i{font-style:normal;font-size:12.5px;color:var(--green-800);background:var(--green-050);border:1px solid #DCEAE1;padding:4px 12px;border-radius:100px}
.topic .src{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}
.topic .src a{color:var(--green-700)}
.frontier{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.f-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 30px;transition:.3s}
.f-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#D7E4DB}
.f-item h4{font-size:17.5px;font-weight:600;margin-bottom:10px}
.stage{display:inline-block;font-size:12px;padding:3px 12px;border-radius:100px;background:var(--green-050);color:var(--green-800);border:1px solid #D3E7DA;margin-bottom:12px}
.f-item p{color:var(--muted);font-size:14.5px}
.f-item ul{margin-top:14px}
.f-item ul li{display:flex;gap:10px;font-size:13.5px;color:var(--muted);padding:5px 0}
.f-item ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--green-600);margin-top:9px;flex:0 0 auto}
@media (max-width:1024px){
  .news-layout{grid-template-columns:1fr}
  .news-side{position:static}
  .frontier{grid-template-columns:1fr}
}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* 响应式 */
@media (max-width:1024px){
  .g4,.cert-grid,.contact-grid,.logo-grid{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(4,1fr);row-gap:34px}
  .flow-step:nth-child(4)::after{display:none}
  .split,.split.rev,.contact-wrap{grid-template-columns:1fr;gap:44px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .metric-band{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:768px){
  .nav-links{
    position:fixed;top:76px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;padding:16px 24px 24px;gap:4px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 14px;font-size:16px}
  .nav-cta{margin:12px 0 0;justify-content:center}
  .nav-toggle{display:block}
  .g2,.g3,.g4,.product-grid,.cert-grid,.contact-grid,.logo-grid{grid-template-columns:1fr}
  .hero-stats .container{grid-template-columns:repeat(2,1fr);row-gap:22px}
  .section{padding:68px 0}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .flow-step:nth-child(even)::after{display:none}
  .form-row{grid-template-columns:1fr}
  .contact-split{grid-template-columns:1fr}
  .timeline .t-item{grid-template-columns:1fr;gap:8px}
  .footer-grid{grid-template-columns:1fr}
  .cap-table .row{grid-template-columns:1fr}
  .cap-table .row .k{padding:14px 24px}
  .org-branches{grid-template-columns:repeat(2,1fr)}
  .org-branches::before{display:none}
  .form-card{padding:28px 22px}
  .split .visual .float{right:10px;bottom:-16px;padding:14px 18px}
}