/* =====================================================================
   塑煌科技官网 · 共享样式 site.css
   设计语言：方案A 简约材料 — 浅色 / 品牌蓝 / 发丝线 / 直角网格 / 中英双语
   ===================================================================== */
:root{
  --ink:#16202b; --ink-2:#3d4a5a; --ink-soft:#6a7686;
  --line:#e5e8ec; --line-2:#eef1f4;
  --bg:#ffffff; --bg-soft:#f5f7f9; --bg-soft2:#fafbfc;
  --brand:#0b62d6; --brand-deep:#063f8a; --brand-soft:#eaf1fb; --accent:#1fa2e0;
  --navy:#0e161f;
  --radius:3px;
  --maxw:1200px;
  --ease:cubic-bezier(.2,.6,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.72;-webkit-font-smoothing:antialiased;font-size:16px;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
.kicker{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--brand);font-weight:600}
.center{text-align:center}
.center .kicker{display:block}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;padding:13px 26px;border-radius:var(--radius);transition:.2s var(--ease);cursor:pointer;border:none}
.btn-pri{background:var(--brand);color:#fff}
.btn-pri:hover{background:var(--brand-deep)}
.btn-gho{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-gho:hover{background:var(--ink);color:#fff}
.btn-light{border:1px solid #fff;color:#fff;background:transparent}
.btn-light:hover{background:#fff;color:var(--ink)}

/* ---------- top utility bar ---------- */
.topbar{border-bottom:1px solid var(--line);font-size:12.5px;color:var(--ink-soft);background:var(--bg)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar .l span{margin-right:18px}
.topbar .r a{margin-left:18px}
.topbar b{color:var(--ink);font-weight:600}

/* ---------- header / nav ---------- */
header.site{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;height:72px;gap:40px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:38px;height:38px}
.brand .cn{font-size:19px;font-weight:700;letter-spacing:.04em}
.brand .en{font-size:10px;letter-spacing:.18em;color:var(--ink-soft);text-transform:uppercase}
nav.menu{margin-left:auto;display:flex;gap:34px}
nav.menu a{font-size:14.5px;color:var(--ink-2);font-weight:500;position:relative;padding:4px 0}
nav.menu a:hover{color:var(--brand)}
nav.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--brand);transition:width .25s var(--ease)}
nav.menu a:hover::after,nav.menu a.active::after{width:100%}
nav.menu a.active{color:var(--brand);font-weight:600}
.nav .cta{font-size:13.5px;border:1px solid var(--ink);padding:9px 18px;border-radius:var(--radius);font-weight:600;transition:.2s}
.nav .cta:hover{background:var(--ink);color:#fff}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.burger span{width:18px;height:2px;background:var(--ink);transition:.2s}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-menu a{display:block;padding:14px 28px;border-bottom:1px solid var(--line-2);font-size:15px;color:var(--ink-2);font-weight:500}
.mobile-menu a.active{color:var(--brand)}
.mobile-menu.open{display:block}

/* ---------- page hero (inner pages) ---------- */
.page-hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.page-hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34}
.page-hero .veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,22,31,.92),rgba(14,22,31,.5))}
.page-hero .wrap{position:relative;padding:78px 28px 60px}
.page-hero .kicker{color:#7fb6ff}
.page-hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.01em;margin-top:14px;line-height:1.12}
.page-hero p{margin-top:18px;max-width:640px;color:#c2cdd9;font-size:16.5px}
.breadcrumb{margin-top:26px;font-size:13px;color:#8ea0b3}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{margin:0 8px;opacity:.5}

/* ---------- sections ---------- */
section{padding:92px 0}
section.tight{padding:66px 0}
.sec-head{max-width:760px;margin-bottom:50px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.01em;margin-top:14px;line-height:1.18}
.sec-head p{margin-top:16px;color:var(--ink-2);font-size:16.5px}
.bg-soft{background:var(--bg-soft)}
.bg-soft-bordered{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- stat strip ---------- */
.stats{border-bottom:1px solid var(--line);background:var(--bg)}
.stats .grid{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:34px 22px;border-left:1px solid var(--line)}
.stat:first-child{border-left:none}
.stat .n{font-size:38px;font-weight:800;letter-spacing:-.02em;line-height:1}
.stat .n small{font-size:18px;font-weight:700;color:var(--brand);margin-left:2px}
.stat .l{margin-top:10px;font-size:13px;color:var(--ink-soft)}

/* ---------- generic two-col ---------- */
.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.two-col.flip{grid-template-columns:.95fr 1.05fr}
.two-col .txt p{color:var(--ink-2);margin-bottom:16px}
.two-col .txt p b{color:var(--ink);font-weight:700}
.fig{position:relative}
.fig img{width:100%;border-radius:var(--radius);border:1px solid var(--line)}
.fig .cap{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.92);border:1px solid var(--line);font-size:12px;padding:7px 12px;border-radius:2px;color:var(--ink-2)}

/* highlight inline stats row */
.hl{display:flex;gap:34px;margin-top:26px;border-top:1px solid var(--line);padding-top:24px;flex-wrap:wrap}
.hl div .k{font-size:26px;font-weight:800}
.hl div .v{font-size:13px;color:var(--ink-soft)}

/* ---------- cards / panels ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.panel{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.2s var(--ease)}
.panel:hover{border-color:var(--brand);transform:translateY(-3px)}
.panel .no{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.1em}
.panel h3{font-size:20px;font-weight:800;margin:10px 0 6px}
.panel .en{font-size:11px;letter-spacing:.16em;color:var(--ink-soft);text-transform:uppercase}
.panel p{margin-top:14px;font-size:14.5px;color:var(--ink-soft)}
.panel .gr{margin-top:14px;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:13px;color:var(--ink-2);border-top:1px dashed var(--line);padding-top:14px}

/* series grid (shared border) */
.series{display:grid;grid-template-columns:repeat(3,1fr);background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;gap:1px}
.series .it{background:var(--bg);padding:34px 30px}
.series .it .no{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.1em}
.series .it h3{font-size:21px;font-weight:800;margin:12px 0 6px}
.series .it .en{font-size:11px;letter-spacing:.16em;color:var(--ink-soft);text-transform:uppercase}
.series .it .gr{margin-top:16px;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:13px;color:var(--ink-2);border-top:1px dashed var(--line);padding-top:14px}
.series .it p{margin-top:14px;font-size:14px;color:var(--ink-soft)}

/* chips (core tech) */
.chips{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.chip{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px 14px;text-align:center;transition:.2s var(--ease)}
.chip:hover{border-color:var(--brand);transform:translateY(-3px)}
.chip .ic{height:30px;display:flex;align-items:center;justify-content:center;color:var(--brand)}
.chip .t{margin-top:12px;font-weight:700;font-size:15px}
.chip .e{margin-top:4px;font-size:10px;letter-spacing:.08em;color:var(--ink-soft);text-transform:uppercase}
.lab-line{font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:20px}

/* data table (grades) */
.dtable{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg)}
.dtable table{width:100%;border-collapse:collapse;font-size:14.5px}
.dtable thead th{background:var(--bg-soft);text-align:left;padding:15px 22px;font-weight:700;font-size:13px;border-bottom:1px solid var(--line);color:var(--ink)}
.dtable td{padding:15px 22px;border-top:1px solid var(--line-2)}
.dtable tbody tr:hover{background:var(--bg-soft2)}
.dtable td.code{font-family:"SF Mono",ui-monospace,Menlo,monospace;font-weight:700;color:var(--brand-deep);width:24%}
.dtable td.tag span{font-size:12px;background:var(--brand-soft);border:1px solid #cfe0f6;padding:3px 10px;color:var(--brand-deep);border-radius:2px}

/* grid index (grades compact) */
.gindex{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gindex .g{padding:18px 20px;border-left:1px solid var(--line-2);border-top:1px solid var(--line-2)}
.gindex .g .code{font-family:"SF Mono",ui-monospace,Menlo,monospace;font-weight:700;font-size:15px}
.gindex .g .d{font-size:12.5px;color:var(--ink-soft);margin-top:4px}

/* capability cards w/ photo */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg)}
.cap .ph{aspect-ratio:16/10;overflow:hidden}
.cap .ph img{width:100%;height:100%;object-fit:cover;transition:.5s var(--ease)}
.cap:hover .ph img{transform:scale(1.05)}
.cap .bd{padding:22px 22px 26px}
.cap .bd .en{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--brand);font-weight:600}
.cap .bd h3{font-size:18px;font-weight:800;margin:8px 0}
.cap .bd p{font-size:14px;color:var(--ink-soft)}

/* certificates */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cert{border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;background:var(--bg-soft)}
.cert .b{font-size:16px;font-weight:800}
.cert .s{font-size:12.5px;color:var(--ink-soft);margin-top:6px;line-height:1.5}
.cert .no{margin-top:12px;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:11.5px;color:var(--brand)}
.cert-shots{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.cert-shot{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);padding:18px;display:flex;gap:20px;align-items:center}
.cert-shot img{width:160px;flex:none;border:1px solid var(--line-2);background:#fff}
.cert-shot .info .b{font-size:17px;font-weight:800}
.cert-shot .info .s{font-size:13px;color:var(--ink-soft);margin-top:6px}
.cert-shot .info .no{margin-top:10px;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:12px;color:var(--brand)}

/* applications */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.app{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg);min-height:230px;display:flex;flex-direction:column;justify-content:flex-end;padding:24px}
.app .en{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.app h3{font-size:20px;font-weight:800;margin:6px 0 10px}
.app ul li{padding:2px 0;font-size:13px;color:var(--ink-soft)}
.app .idx{position:absolute;top:18px;right:20px;font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:12px;color:var(--brand)}
.app::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:var(--brand);opacity:0;transition:.2s}
.app:hover::before{opacity:1}

/* product gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.gcard{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg)}
.gcard .ph{aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft)}
.gcard .ph img{width:100%;height:100%;object-fit:cover;transition:.5s var(--ease)}
.gcard:hover .ph img{transform:scale(1.05)}
.gcard .bd{padding:18px 20px}
.gcard .bd h4{font-size:16px;font-weight:700}
.gcard .bd p{font-size:13px;color:var(--ink-soft);margin-top:4px}

/* timeline (milestones) */
.timeline{position:relative;margin-top:10px}
.timeline::before{content:"";position:absolute;left:118px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl{display:grid;grid-template-columns:118px 40px 1fr;align-items:start;padding:18px 0}
.tl .yr{font-size:22px;font-weight:800;color:var(--brand);text-align:right;padding-right:20px}
.tl .dot{position:relative;display:flex;justify-content:center}
.tl .dot span{width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand);margin-top:6px;z-index:1}
.tl .ct h4{font-size:18px;font-weight:800}
.tl .ct p{font-size:14.5px;color:var(--ink-soft);margin-top:4px}

/* philosophy / business big list */
.biz{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.biz .it{padding:34px 30px;border-left:1px solid var(--line)}
.biz .it:first-child{border-left:none}
.biz .it .t{font-size:30px;font-weight:800;color:var(--brand)}
.biz .it .e{font-size:11px;letter-spacing:.16em;color:var(--ink-soft);text-transform:uppercase;margin-top:2px}
.biz .it p{margin-top:14px;font-size:14.5px;color:var(--ink-2)}

/* feature list */
.flist{border-top:1px solid var(--line)}
.flist .f{display:flex;gap:22px;padding:20px 0;border-bottom:1px solid var(--line-2)}
.flist .f .n{width:60px;flex:none;font-family:"SF Mono",ui-monospace,Menlo,monospace;color:var(--brand);font-weight:700}
.flist .f .t{width:160px;flex:none;font-weight:800}
.flist .f .d{font-size:14.5px;color:var(--ink-2)}

/* quality flow (dark band) */
.quality{background:var(--ink);color:#fff}
.quality .sec-head h2{color:#fff}.quality .sec-head .kicker{color:#7fb6ff}.quality .sec-head p{color:#aeb9c6}
.qflow{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);overflow:hidden}
.qstep{padding:30px 26px;border-left:1px solid rgba(255,255,255,.14)}
.qstep:first-child{border-left:none}
.qstep .n{font-family:"SF Mono",ui-monospace,Menlo,monospace;font-size:13px;color:#7fb6ff}
.qstep h4{font-size:18px;margin:12px 0 8px;font-weight:800}
.qstep p{font-size:13.5px;color:#aeb9c6}
.defects{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.defects span{font-size:13px;border:1px solid rgba(255,255,255,.2);padding:7px 14px;color:#cdd9e8;border-radius:2px}

/* CTA band —— 浅色克制版（避免高饱和蓝过于突兀，贴合简约材料风格）*/
.cta-band{background:var(--brand-soft);color:var(--ink);border-top:1px solid #d8e5f6;border-bottom:1px solid #d8e5f6}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:50px 28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:800}
.cta-band p{margin-top:8px;color:var(--ink-2)}
.cta-band .acts{display:flex;gap:14px;flex-wrap:wrap}
/* 浅底上的按钮：第一颗实心蓝主按钮，第二颗白底描边次按钮 */
.cta-band .btn-light{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.cta-band .btn-light:hover{background:var(--brand-deep);border-color:var(--brand-deep)}
.cta-band .btn[style]{background:#fff !important;color:var(--brand) !important;border:1px solid #cfe0f6 !important}
.cta-band .btn[style]:hover{border-color:var(--brand) !important}

/* contact */
.cinfo{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg)}
.cinfo .ci{display:flex;gap:16px;padding:20px 24px;border-bottom:1px solid var(--line-2)}
.cinfo .ci:last-child{border-bottom:none}
.cinfo .ci .lab{width:96px;flex:none;font-size:13px;color:var(--ink-soft);letter-spacing:.05em}
.cinfo .ci .val{font-size:15px;font-weight:600}
.cinfo .ci .val .sub{display:block;font-size:12.5px;font-weight:400;color:var(--ink-soft);margin-top:2px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form .full{grid-column:1/-1}
.form label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:7px}
.form input,.form textarea,.form select{width:100%;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;font:inherit;font-size:14.5px;color:var(--ink);background:var(--bg);transition:.2s}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.form textarea{resize:vertical;min-height:120px}
.map{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-soft);min-height:300px;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:14px;text-align:center;padding:30px}

/* ---------- footer ---------- */
footer.site{background:#0e161f;color:#9fb0c0;font-size:13.5px;padding:54px 0 26px}
footer.site .top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
footer.site .brand2{display:flex;align-items:center;gap:12px;margin-bottom:16px}
footer.site .brand2 img{width:34px;height:34px;background:#fff;border-radius:4px;padding:3px}
footer.site .brand2 .cn{color:#fff;font-size:17px;font-weight:700}
footer.site h5{color:#fff;font-size:14px;margin-bottom:14px;font-weight:700}
footer.site a{display:block;padding:4px 0;color:#9fb0c0}
footer.site a:hover{color:#fff}
footer.site .bot{display:flex;justify-content:space-between;padding-top:20px;font-size:12.5px;color:#6c7d8d;flex-wrap:wrap;gap:8px}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .topbar{display:none}
  nav.menu,.nav .cta{display:none}
  .burger{display:flex}
  .stats .grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(odd){border-left:none}
  .two-col,.two-col.flip{grid-template-columns:1fr;gap:36px}
  .grid-3,.grid-4,.grid-2,.series,.chips,.cap-grid,.cert-grid,.app-grid,.gindex,.qflow,.biz,.gallery,.cert-shots{grid-template-columns:1fr 1fr}
  .series{display:grid}
  .form{grid-template-columns:1fr}
  .timeline::before{left:78px}
  .tl{grid-template-columns:78px 30px 1fr}
  .tl .yr{font-size:18px}
  footer.site .top{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .stats .grid{grid-template-columns:1fr 1fr}
  .grid-3,.grid-4,.grid-2,.series,.chips,.cap-grid,.cert-grid,.app-grid,.gindex,.qflow,.biz,.gallery,.cert-shots{grid-template-columns:1fr}
  .cta-band .wrap{flex-direction:column;align-items:flex-start}
  .cert-shot{flex-direction:column;align-items:flex-start}
  .cert-shot img{width:100%}
  .flist .f{flex-wrap:wrap;gap:8px}
}