/* =========================================================
   玻璃仪器网 boliyiqi.com · 设计系统 (2026-10-30 改版)
   火焰红 #E1251B · 余烬橙 #FF6B1A · 炉火金 #FFB547 · 炉火炭 #140F0A
   炉火质感 + 大气行业门户 · 暖纸底 + 深炭首屏 + 火焰光晕
   ========================================================= */
:root{
  --flame:#E1251B; --flame-700:#B01813; --flame-600:#C8201A;
  --ember:#FF6B1A; --ember-700:#E2550C;
  --gold:#FFB547;
  --forge:#140F0A; --forge-2:#241712;
  --ink-1:#241712; --ink-2:#5A423A; --ink-3:#8A6E63;
  --line:rgba(225,37,27,.14); --line-2:rgba(225,37,27,.26);
  --bg:#FBF5EF; --card:#FFFFFF; --radius:8px;
  --ice:#FCEDE8; --ice-2:#F7D9D0;
  --accent:#FF6B1A; --accent-700:#E2550C;
  --primary:#E1251B; --primary-700:#140F0A; --primary-600:#C8201A;
  --mono:Consolas,"SFMono-Regular",Menlo,"Courier New",monospace;
  --sans:"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 8px 28px rgba(40,12,6,.08);
  --grid:linear-gradient(rgba(225,37,27,.05) 1px,transparent 1px),
         linear-gradient(90deg,rgba(225,37,27,.05) 1px,transparent 1px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);color:var(--ink-1);background:var(--bg);
  line-height:1.68;font-size:16px;
  background-image:var(--grid);background-size:28px 28px;background-position:-1px -1px}
img{max-width:100%;display:block}
a{color:var(--flame);text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
h1,h2,h3,h4,h5{font-weight:800;line-height:1.24;color:var(--ink-1);margin:0 0 .42em}
h1{font-size:40px;letter-spacing:-.6px}h2{font-size:30px}h3{font-size:20px}h4{font-size:15px}
p{margin:0 0 1em}
.mono{font-family:var(--mono)}
.muted{color:var(--ink-3);font-size:13px}
.cur{color:var(--flame)}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(225,37,27,.05)}
.site-head .bar{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink-1);font-weight:800}
.brand .mark{width:36px;height:36px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--flame),var(--ember));
  border-radius:9px;color:#fff;flex:none;box-shadow:0 4px 12px rgba(225,37,27,.32)}
.brand b{font-size:17px;display:block;line-height:1.1}
.brand small{font-size:10.5px;letter-spacing:1.6px;color:var(--ink-3);font-family:var(--mono)}
.nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav a{padding:8px 13px;border-radius:var(--radius);font-size:14.5px;color:var(--ink-2);font-weight:600}
.nav a:hover{background:var(--ice);color:var(--flame)}
.nav a.cur{background:var(--flame);color:#fff}
.head-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.searchbox{display:flex;align-items:center;gap:6px;background:var(--ice);border:1px solid var(--line);
  border-radius:var(--radius);padding:7px 11px;color:var(--ink-3)}
.searchbox input{border:0;background:transparent;outline:none;font-size:13px;width:150px;color:var(--ink-1)}
.langswitch{display:flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.langswitch a{padding:7px 11px;font-size:13px;color:var(--ink-2);font-weight:600}
.langswitch a.cur{background:var(--flame);color:#fff}
.btn-rfq{background:linear-gradient(135deg,var(--flame),var(--ember));color:#fff;padding:9px 15px;
  border-radius:var(--radius);font-weight:700;font-size:13.5px;white-space:nowrap;
  box-shadow:0 4px 14px rgba(225,37,27,.3)}
.btn-rfq:hover{filter:brightness(1.06)}

/* ---------- Buttons ---------- */
.btn-accent,.btn-ghost,.btn-primary{display:inline-flex;align-items:center;gap:7px;
  padding:13px 24px;border-radius:var(--radius);font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.16s}
.btn-accent{background:linear-gradient(135deg,var(--flame),var(--ember));color:#fff;
  box-shadow:0 6px 18px rgba(225,37,27,.28)}
.btn-accent:hover{filter:brightness(1.07);box-shadow:0 10px 26px rgba(225,37,27,.4)}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--ink-1)}
.btn-ghost:hover{border-color:var(--flame);color:var(--flame)}
.btn-primary{background:linear-gradient(135deg,var(--flame),var(--ember));color:#fff;
  box-shadow:0 6px 18px rgba(225,37,27,.28)}
.btn-primary:hover{filter:brightness(1.07)}

/* ---------- Hero (炉火) ---------- */
.hero{position:relative;color:#fff;overflow:hidden;
  background:
    radial-gradient(900px 520px at 84% -22%,rgba(255,107,26,.42),transparent 60%),
    radial-gradient(760px 460px at 8% 122%,rgba(225,37,27,.32),transparent 60%),
    linear-gradient(152deg,var(--forge) 0%,#2a1810 56%,var(--forge) 100%);
  isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;background-image:var(--grid);
  background-size:34px 34px;opacity:.1;pointer-events:none}
.hero::after{content:"";position:absolute;left:0;right:0;top:0;height:4px;z-index:3;
  background:linear-gradient(90deg,var(--gold),var(--ember),var(--flame),var(--ember),var(--gold))}
.hero .glow{position:absolute;width:560px;height:560px;border-radius:50%;z-index:0;
  right:4%;top:-150px;pointer-events:none;
  background:radial-gradient(circle,rgba(255,120,30,.55),rgba(225,37,27,.14) 46%,transparent 70%);
  filter:blur(10px)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.18fr .82fr;gap:44px;
  align-items:center;padding:78px 24px 84px}
.eyebrow{font-family:var(--mono);font-size:13.5px;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold)}
.hero h1{font-size:62px;line-height:1.08;color:#fff;margin:16px 0 14px;font-weight:800;letter-spacing:-1.2px}
.hero .hl{background:linear-gradient(92deg,#FFD27A,#FF8A2A 55%,var(--flame));
  -webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.hero .lede{font-size:17.5px;color:rgba(255,255,255,.86);max-width:540px;margin-bottom:26px;line-height:1.7}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .cta .btn-ghost{color:#fff;border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.06)}
.hero .cta .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.14)}
.trust{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap}
.trust div{font-size:13px;color:rgba(255,255,255,.78)}
.trust b{display:block;font-size:27px;color:var(--gold);font-family:var(--mono);font-weight:700}
.hero-visual{position:relative;z-index:2}
.hero-visual .panel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);
  border-radius:14px;padding:22px;backdrop-filter:blur(6px);
  box-shadow:0 18px 50px rgba(0,0,0,.35)}
.hero-visual .panel h4{color:#fff;margin:0 0 12px}
.glass-art{height:160px;display:grid;place-items:center;background:rgba(255,255,255,.06);
  border-radius:10px;border:1px dashed rgba(255,255,255,.26)}
.glass-art .flask svg{width:66px;height:88px;opacity:.95}
.row2{display:flex;gap:10px}
.rfq-no{font-family:var(--mono);font-size:12.5px;background:rgba(255,255,255,.16);
  color:#FFD9B8;padding:8px 12px;border-radius:var(--radius);flex:1;text-align:center;
  border:1px solid rgba(255,180,90,.25)}
.hero-visual .panel h4{display:flex;align-items:center;justify-content:space-between}
.live-dot{font-family:var(--mono);font-size:10.5px;color:var(--ember);letter-spacing:1px;
  background:rgba(255,107,26,.16);border:1px solid rgba(255,107,26,.42);padding:2px 9px;border-radius:99px}
.rfq-feed{display:flex;flex-direction:column;gap:9px;margin-top:4px}
.rfq-row{display:flex;align-items:center;gap:9px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:9px 11px;font-size:13px}
.rfq-row .dot{width:7px;height:7px;border-radius:99px;background:var(--ember);
  box-shadow:0 0 8px var(--ember);flex:none}
.rfq-row b{color:#fff;font-weight:700}
.rfq-row span{color:rgba(255,255,255,.6);font-size:12px;flex:1}
.rfq-row i{font-family:var(--mono);font-style:normal;font-size:11.5px;color:var(--gold)}
.rfq-note{margin-top:12px;font-size:12px;color:rgba(255,255,255,.62);text-align:center;
  border-top:1px dashed rgba(255,180,90,.25);padding-top:11px}

/* ---------- Section heads ---------- */
.sec-head{margin-bottom:20px}
.kicker{font-family:var(--mono);font-size:12.5px;letter-spacing:2.5px;color:var(--ember);
  text-transform:uppercase;margin-bottom:7px;font-weight:700}
.sec-head h2{margin:0;font-size:30px}
.sec-head p{color:var(--ink-3);margin:8px 0 0;max-width:660px;font-size:15px}

/* ---------- Cards / glass ---------- */
.glass{backdrop-filter:blur(6px)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px}
a.glass.card{display:block;transition:.16s}
a.glass.card:hover{transform:translateY(-4px);border-color:var(--flame);
  box-shadow:0 14px 34px rgba(225,37,27,.16)}

/* ---------- Tags / callout ---------- */
.tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:99px;
  background:rgba(225,37,27,.08);color:var(--flame-700);font-family:var(--mono);
  border:1px solid var(--line);font-weight:700}
.tag.cy{background:rgba(255,107,26,.12);color:var(--ember-700);border-color:rgba(255,107,26,.26)}
.callout{background:linear-gradient(0deg,var(--ice),#fff);border:1px solid var(--line);
  border-left:3px solid var(--flame);border-radius:var(--radius);padding:13px 15px;
  font-size:13.5px;color:var(--ink-2);margin-top:14px}

/* ---------- Capability row / statbar / cta-band ---------- */
.cap-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.cap-row .glass.card h3{display:flex;align-items:center;gap:8px}
.statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;color:#fff;border-radius:12px;padding:24px;
  box-shadow:0 14px 36px rgba(225,37,27,.28);
  background:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0 / 24px 24px,
    linear-gradient(120deg,var(--flame),var(--ember))}
.statbar .st b{display:block;font-size:28px;font-family:var(--mono);color:#fff;font-weight:700}
.statbar .st span{font-size:13px;color:rgba(255,255,255,.88)}
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:18px;color:#fff;border-radius:12px;padding:28px 32px;
  box-shadow:0 14px 36px rgba(225,37,27,.26);
  background:
    linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px) 0 0 / 26px 26px,
    linear-gradient(120deg,var(--flame),var(--ember))}
.cta-band h3{color:#fff;margin:0}.cta-band p{color:rgba(255,255,255,.9);margin:5px 0 0}
.cta-band .acts{display:flex;gap:10px;flex:none}
.cta-band .acts .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.08)}
.cta-band .acts .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.16)}

/* ---------- Quality-route homepage blocks ---------- */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.why-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 22px;transition:.16s}
.why-card:hover{transform:translateY(-4px);border-color:var(--flame);box-shadow:0 14px 34px rgba(225,37,27,.14)}
.why-ic{font-size:30px;line-height:1;margin-bottom:12px}
.why-card h3{font-size:17px;margin:0 0 8px}
.why-card p{font-size:14px;color:var(--ink-3);margin:0;line-height:1.72}

.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
.cat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 22px;display:flex;flex-direction:column;gap:5px;transition:.16s}
.cat-card:hover{transform:translateY(-4px);border-color:var(--flame);box-shadow:0 14px 34px rgba(225,37,27,.14)}
.cat-ic{font-size:30px;line-height:1;margin-bottom:8px}
.cat-card b{font-size:17px;color:var(--ink-1)}
.cat-card span{font-size:14px;color:var(--ink-3)}

.pcard.pick .brandline{font-family:var(--mono);font-size:11.5px;letter-spacing:.5px;
  color:var(--ember-700);font-weight:700;margin-bottom:4px}
.pcard.pick .pb h4{margin-bottom:4px}
.pcard.pick .pick-cta{margin-top:12px;font-weight:700;color:var(--flame);font-size:13.5px}
.pcard.pick:hover .pick-cta{color:var(--flame-700)}

.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
.tools-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 22px;transition:.16s}
.tools-card:hover{transform:translateY(-4px);border-color:var(--flame);box-shadow:0 14px 34px rgba(225,37,27,.14)}
.tools-ic{font-size:28px;line-height:1;margin-bottom:10px;display:block}
.tools-card b{font-size:16px;color:var(--ink-1)}
.tools-card p{font-size:13.5px;color:var(--ink-3);margin:6px 0 0;line-height:1.6}

.strength{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;color:#fff;
  border-radius:14px;padding:40px 38px;box-shadow:0 16px 42px rgba(225,37,27,.3);
  background:
    linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px) 0 0 / 28px 28px,
    linear-gradient(125deg,var(--forge),#3a1d12 55%,var(--flame))}
.strength h2{color:#fff;margin:8px 0 10px}
.strength p{color:rgba(255,255,255,.86);margin:0 0 16px;max-width:460px}
.certs{display:flex;flex-wrap:wrap;gap:10px}
.cert{font-size:13px;font-weight:700;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);
  padding:8px 13px;border-radius:99px;color:#fff}
.strength-r{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.strength-r .st{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:12px;padding:18px;text-align:center}
.strength-r .st b{display:block;font-size:30px;font-family:var(--mono);color:var(--gold);font-weight:700}
.strength-r .st span{font-size:13px;color:rgba(255,255,255,.82)}

/* ---------- Grids ---------- */
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.craft-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.res-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}

/* ---------- Product cards ---------- */
.pcards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.16s}
.pcard:hover{transform:translateY(-4px);border-color:var(--flame);box-shadow:0 14px 34px rgba(225,37,27,.16)}
.pcard .ph{position:relative;background:linear-gradient(160deg,var(--ice),#fff);
  border-bottom:1px solid var(--line);padding:18px 18px 14px;display:flex;align-items:center;gap:12px}
.pcard .ph .sk{font-family:var(--mono);font-size:12px;color:var(--flame-700);font-weight:700}
.pcard .ph svg{width:48px;height:48px;opacity:.55;flex:none}
.pcard .pb{padding:14px 18px 18px}
.pcard .pb h4{margin:0 0 6px;font-size:16px}
.pcard .pb .sp{font-family:var(--mono);font-size:12.5px;color:var(--ink-3);margin-bottom:10px}
.pcard .pb .meta{display:flex;gap:6px;flex-wrap:wrap}

/* ---------- Spec / std tables ---------- */
.spec-table,.std-table{width:100%;border-collapse:collapse;font-size:14px;margin-top:4px}
.spec-table th,.spec-table td,.std-table th,.std-table td{border:1px solid var(--line);
  padding:10px 12px;text-align:left}
.spec-table th,.std-table th{background:linear-gradient(135deg,var(--flame),var(--ember));
  color:#fff;font-weight:700;font-size:13px}
.spec-table td:first-child{background:var(--ice);color:var(--ink-2);width:38%;font-weight:700}
.spec-table td.mono{font-family:var(--mono);color:var(--flame-700)}
.std-table td.mono,.std-table th:not(:first-child){font-family:var(--mono);text-align:center}
.std-table td:first-child{font-weight:700;color:var(--ink-2)}

/* ---------- Gate (members only) ---------- */
.gate{background:var(--card);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow);padding:42px 24px;text-align:center;max-width:640px;margin:0 auto}
.gate .lock{font-size:34px}
.gate h3{margin:10px 0 6px}.gate p{color:var(--ink-3);max-width:440px;margin:0 auto 16px}

/* ---------- Resource / case cards ---------- */
a.glass.card h3{display:flex;align-items:center;gap:8px}
.ic{font-size:18px}

/* ---------- Breadcrumbs ---------- */
.crumbs{padding:16px 0 0;font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumbs a{color:var(--ink-3)}.crumbs a:hover{color:var(--flame)}
.crumbs .sep{color:var(--line-2)}
main{display:block;min-height:40vh}

/* ---------- Footer ---------- */
.site-foot{background:
    linear-gradient(rgba(255,107,26,.05) 1px,transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg,rgba(255,107,26,.05) 1px,transparent 1px) 0 0 / 26px 26px,
    linear-gradient(160deg,var(--forge),#1c130d);
  color:rgba(255,255,255,.82);margin-top:64px;padding:50px 0 28px}
.site-foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.site-foot h5{color:#fff;font-size:14px;margin:0 0 12px;letter-spacing:.5px}
.site-foot a{display:block;color:rgba(255,255,255,.72);font-size:13.5px;padding:4px 0}
.site-foot a:hover{color:var(--gold)}
.brandf{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800}
.brandf .mark{width:32px;height:32px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--flame),var(--ember));border-radius:8px;color:#fff;flex:none}
.contact-strip{display:flex;flex-direction:column;gap:8px;border:1px solid rgba(255,180,90,.18);
  border-radius:var(--radius);padding:13px 15px;background:rgba(255,120,30,.06)}
.contact-strip .it{display:flex;align-items:center;gap:8px;font-size:13.5px}
.contact-strip .it b{color:#fff}.contact-strip .it span{color:rgba(255,255,255,.72)}
.copy{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  border-top:1px solid rgba(255,255,255,.14);margin-top:30px;padding-top:18px;font-size:12.5px}

/* ---------- RFQ flow ---------- */
.rfq{display:grid;grid-template-columns:230px 1fr;gap:20px;align-items:start}
.steps{display:flex;flex-direction:column;gap:8px;position:sticky;top:88px}
.step{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:11px 13px;opacity:.6}
.step.on{border-color:var(--flame);box-shadow:0 0 0 2px rgba(225,37,27,.14);opacity:1}
.step.done{opacity:1;background:var(--ice)}
.step .n{width:26px;height:26px;border-radius:99px;background:var(--ice-2);color:var(--flame-700);
  display:grid;place-items:center;font-family:var(--mono);font-size:13px;flex:none;font-weight:700}
.step.on .n{background:linear-gradient(135deg,var(--flame),var(--ember));color:#fff}
.step.done .n{background:var(--ember);color:#fff}
.step .t{display:flex;flex-direction:column;line-height:1.2}
.step .t b{font-size:14px}.step .t span{font-size:11px;color:var(--ink-3);font-family:var(--mono)}
.rfq-panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;box-shadow:var(--shadow)}
.rfq-panel h3{margin:0;display:flex;align-items:baseline;gap:8px}
.rfq-panel .sub{color:var(--ink-3);margin:6px 0 16px}
.opts{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.opt{border:1px solid var(--line);border-radius:var(--radius);padding:12px 13px;cursor:pointer;transition:.13s;
  background:#fff;display:flex;flex-direction:column;gap:3px}
.opt:hover{border-color:var(--flame)}
.opt.sel{border-color:var(--flame);background:var(--ice);box-shadow:0 0 0 2px rgba(225,37,27,.14)}
.opt b{font-size:14px}.opt small{font-size:12px;color:var(--ink-3)}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--ink-2);font-weight:700}
textarea.t{font-family:var(--sans);border:1px solid var(--line);border-radius:var(--radius);
  padding:10px 12px;min-height:80px;resize:vertical;font-size:14px;outline:none}
textarea.t:focus{border-color:var(--flame)}
.rfq-foot{display:flex;justify-content:space-between;gap:10px;margin-top:18px}
.drop{border:2px dashed var(--line-2);border-radius:8px;padding:26px;text-align:center;
  color:var(--ink-3);cursor:pointer;background:var(--ice);transition:.15s}
.drop:hover{border-color:var(--ember);color:var(--ember-700)}
.files{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.file{background:var(--ice);border:1px solid var(--line);border-radius:var(--radius);
  padding:8px 12px;font-size:13px;font-family:var(--mono);display:flex;justify-content:space-between;align-items:center}
.file .x{cursor:pointer;color:var(--flame-700);font-weight:700}
.summary{margin-top:14px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 14px;font-size:13px;font-family:var(--mono);color:var(--ink-2);white-space:pre-wrap}
.ok-box{background:linear-gradient(0deg,var(--ice),#fff);border:1px solid var(--line-2);
  border-left:4px solid var(--flame);border-radius:8px;padding:20px;margin-top:14px}
.ok-box h3{margin:0 0 6px;color:var(--flame-700)}
.ok-box .summary{background:#fff}
.hide{display:none!important}

/* ---------- Material detail hero ---------- */
.mark{display:grid;place-items:center}
.mark svg{width:22px;height:22px}

/* ---------- Hero 火焰光点（炉火余烬） ---------- */
.hero .sparks{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.5;
  background-image:
    radial-gradient(2px 2px at 20% 70%,rgba(255,180,90,.9),transparent),
    radial-gradient(2px 2px at 38% 40%,rgba(255,140,50,.8),transparent),
    radial-gradient(1.5px 1.5px at 62% 60%,rgba(255,200,120,.8),transparent),
    radial-gradient(2px 2px at 78% 30%,rgba(255,120,30,.9),transparent),
    radial-gradient(1.5px 1.5px at 88% 72%,rgba(255,170,80,.7),transparent);
  background-repeat:no-repeat}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero .wrap{grid-template-columns:1fr;padding:56px 24px 64px}
  .hero h1{font-size:42px}
  .cap-row,.statbar,.pcards,.grid3,.craft-grid,.why-grid,.cat-grid,.tools-grid,.strength-r{grid-template-columns:repeat(2,1fr)}
  .site-foot .cols{grid-template-columns:1fr 1fr}
  .rfq{grid-template-columns:1fr}
  .steps{position:static;flex-direction:row;overflow-x:auto}
  .step{flex:none}
}
@media (max-width:620px){
  h1{font-size:30px}.hero h1{font-size:32px}
  .nav{display:none}
  .cap-row,.statbar,.pcards,.grid3,.craft-grid,.grid2,.res-list,.why-grid,.cat-grid,.tools-grid,.strength-r{grid-template-columns:1fr}
  .strength{grid-template-columns:1fr}
  .site-foot .cols{grid-template-columns:1fr}
  .searchbox{display:none}
}