/* ============================================================
   FINETYPE CHEMISTRY — Light / Sci-Tech Theme
   ============================================================ */

:root{
  --bg:#f4faf7;
  --surface:#ffffff;
  --surface-2:#eef8f4;
  --surface-3:#e6f4ee;

  --ink:#0a2b1f;
  --ink-2:#123d2c;
  --ink-soft:#4d7263;
  --ink-mute:#7d9c8e;

  --brand:#00c98a;
  --brand-dk:#00a870;
  --brand-lt:#5ef0c0;
  --cyan:#3fd8ff;
  --cyan-lt:#a8ecff;

  --line:#dfeee7;
  --line-2:#cbe6db;

  --hero-1:#0a2b1f;
  --hero-2:#12482f;
  --hero-3:#1a6b45;

  --glow:rgba(0,201,138,.16);
  --glow-cyan:rgba(63,216,255,.16);

  --shadow-sm:0 1px 3px rgba(10,43,31,.05);
  --shadow-md:0 6px 24px rgba(10,43,31,.07);
  --shadow-lg:0 16px 48px rgba(10,43,31,.12);

  --maxw:1240px;
  --sans:"Inter","Segoe UI","Helvetica Neue",Arial,"微软雅黑","Microsoft YaHei","PingFang SC",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:600;letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;position:relative;}
.section--tight{padding:60px 0;}
.section--grey{background:var(--surface-2);}
.section--navy{background:linear-gradient(150deg,var(--hero-1),var(--hero-2));color:#fff;}

/* 细网格纹理 — 科技感底纹 */
.section--grey::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,201,138,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,201,138,.05) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 30%, #000 20%, transparent 78%);
}

/* ---------- Eyebrow / Section headers ---------- */
.eyebrow{
  display:inline-block;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brand-dk);font-weight:700;margin-bottom:14px;
}
.section--navy .eyebrow{color:var(--brand-lt);}
.h2{
  font-size:34px;margin-bottom:16px;color:var(--ink);
  background:linear-gradient(96deg,var(--ink) 20%,var(--brand-dk));
  -webkit-background-clip:text;background-clip:text;
}
.section--navy .h2{color:#fff;background:none;-webkit-text-fill-color:#fff;}
.lead{font-size:17px;color:var(--ink-soft);max-width:760px;}
.section--navy .lead{color:#a9d8c4;}
.sec-head{margin-bottom:48px;position:relative;z-index:2;}
.sec-head.center{text-align:center;}
.sec-head.center .lead{margin-left:auto;margin-right:auto;}
.rule{
  width:56px;height:3px;margin:20px 0 0;border-radius:3px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
}
.sec-head.center .rule{margin-left:auto;margin-right:auto;}

/* ---------- Top bar ---------- */
.topbar{
  background:rgba(255,255,255,.8);
  backdrop-filter:blur(10px);
  color:var(--ink-mute);font-size:12.5px;
  border-bottom:1px solid var(--line);
}
.topbar .wrap{
  display:flex;justify-content:space-between;align-items:center;
  gap:24px;min-height:38px;flex-wrap:wrap;
}
.topbar span{display:inline-flex;align-items:center;gap:8px;}
.topbar a{color:var(--ink-soft);}
.topbar a:hover{color:var(--brand-dk);}
.topbar .sep{opacity:.3;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:28px;}
.brand{display:flex;align-items:center;gap:13px;flex-shrink:0;}
.brand-mark{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;}
.brand-mark svg{width:42px;height:42px;}
.brand-text .name{
  font-size:19px;font-weight:700;letter-spacing:.04em;line-height:1.1;
  background:linear-gradient(96deg,var(--brand-dk),var(--brand));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.brand-text .sub{
  font-size:10px;letter-spacing:.17em;text-transform:uppercase;
  color:var(--ink-mute);font-weight:600;
}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  padding:10px 14px;font-size:14.5px;font-weight:500;color:var(--ink-2);
  border-radius:7px;transition:background .18s,color .18s;white-space:nowrap;
}
.nav-links a:hover{background:var(--surface-3);color:var(--brand-dk);}
.nav-links a.active{color:var(--brand-dk);font-weight:700;background:var(--surface-3);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(100deg,var(--brand),var(--brand-dk));
  color:#fff;padding:11px 22px;border-radius:8px;font-size:14px;font-weight:600;
  transition:all .2s;white-space:nowrap;
  box-shadow:0 4px 14px rgba(0,201,138,.28);
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(0,201,138,.36);}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;}
.burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;}

/* ---------- Language switcher ---------- */
.lang-switch{position:relative;flex-shrink:0;}
.lang-btn{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:8px;padding:9px 14px;font-size:13.5px;font-weight:600;
  color:var(--ink-2);cursor:pointer;font-family:inherit;transition:all .18s;
}
.lang-btn:hover{border-color:var(--brand);color:var(--brand-dk);background:#fff;}
.lang-btn .globe{width:15px;height:15px;flex:0 0 15px;}
.lang-btn .caret{width:9px;height:9px;opacity:.6;transition:transform .18s;}
.lang-switch.open .lang-btn .caret{transform:rotate(180deg);}
.lang-menu{
  position:absolute;top:calc(100% + 8px);right:0;z-index:60;
  min-width:190px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow-lg);padding:6px;display:none;
}
.lang-switch.open .lang-menu{display:block;}
.lang-menu a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 13px;border-radius:8px;font-size:14px;color:var(--ink-2);transition:all .15s;
}
.lang-menu a:hover{background:var(--surface-3);color:var(--brand-dk);}
.lang-menu a.current{color:var(--brand-dk);font-weight:700;background:var(--surface-3);}
.lang-menu a .code{font-family:var(--mono);font-size:11px;color:var(--ink-mute);letter-spacing:.04em;}
.lang-menu a.current .code{color:var(--brand-dk);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,var(--hero-1) 0%,var(--hero-2) 55%,var(--hero-3) 100%);
  color:#fff;min-height:560px;display:flex;align-items:center;padding:88px 0;
}
.hero::before{
  content:"";position:absolute;pointer-events:none;
  width:1000px;height:1000px;top:-320px;right:-180px;
  background:radial-gradient(circle,rgba(63,216,255,.26),transparent 62%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(94,240,192,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,240,192,.10) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 30% 50%, #000 10%, transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 50%, #000 10%, transparent 72%);
}
.hero-mol{
  position:absolute;right:-60px;top:50%;transform:translateY(-50%);
  width:660px;height:660px;opacity:.20;pointer-events:none;z-index:1;
}
.hero .wrap{position:relative;z-index:3;width:100%;}
.hero-inner{max-width:680px;}
.hero h1{font-size:46px;font-weight:700;line-height:1.18;margin-bottom:22px;letter-spacing:-.02em;}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand-lt),var(--cyan));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{font-size:18px;color:#a9d8c4;margin-bottom:34px;max-width:620px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 28px;border-radius:8px;font-size:15px;font-weight:600;
  transition:all .2s;border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(100deg,var(--brand),var(--brand-dk));
  color:#fff;box-shadow:0 6px 20px rgba(0,201,138,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,201,138,.42);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-dark{
  background:linear-gradient(100deg,var(--ink-2),var(--hero-2));color:#fff;
  box-shadow:0 4px 14px rgba(10,43,31,.18);
}
.btn-dark:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(10,43,31,.26);}
.btn-ghost.on-light{
  border-color:var(--line-2);color:var(--ink-2);background:#fff;
}
.btn-ghost.on-light:hover{border-color:var(--brand);color:var(--brand-dk);}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.14);border-radius:12px;overflow:hidden;
  max-width:680px;
}
.hero-stat{background:rgba(10,43,31,.35);padding:18px 16px;}
.hero-stat .v{font-size:26px;font-weight:700;color:#fff;line-height:1.1;}
.hero-stat .v small{font-size:14px;font-weight:600;color:var(--brand-lt);}
.hero-stat .k{font-size:11.5px;color:#8fc4ad;margin-top:5px;letter-spacing:.05em;}

/* ---------- Cards ---------- */
.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:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:30px 28px;transition:all .22s;position:relative;z-index:2;
}
.card:hover{
  border-color:var(--brand-lt);
  box-shadow:0 0 0 3px rgba(0,201,138,.10),var(--shadow-md);
  transform:translateY(-2px);
}
.card .ic{
  width:46px;height:46px;border-radius:10px;
  background:linear-gradient(135deg,var(--surface-3),#fff);
  display:grid;place-items:center;margin-bottom:18px;
  border:1px solid var(--line);
}
.card .ic svg{width:24px;height:24px;}
.card h3{font-size:18px;margin-bottom:10px;color:var(--ink);}
.card p{font-size:14.5px;color:var(--ink-soft);}
.card .zh{font-size:13px;color:var(--ink-mute);margin-top:-4px;margin-bottom:10px;}

/* ---------- Flagship spotlight ---------- */
.flagship{
  background:linear-gradient(135deg,var(--hero-1) 0%,var(--hero-2) 100%);
  border-radius:16px;overflow:hidden;
  display:grid;grid-template-columns:1fr 1fr;
  border:1px solid rgba(0,201,138,.22);
  box-shadow:0 20px 60px rgba(10,43,31,.18);
  position:relative;z-index:2;
}
.flagship::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 78% 12%, rgba(63,216,255,.18), transparent 58%);
}
.flagship-card{padding:40px 38px;color:#fff;position:relative;z-index:2;border-right:1px solid rgba(255,255,255,.10);}
.flagship-card:last-child{border-right:0;}
.flagship-card .badge-new{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;
  background:linear-gradient(100deg,var(--brand-lt),var(--cyan));
  color:#052a1e;padding:4px 11px;border-radius:20px;margin-bottom:16px;
}
.flagship-card h3{font-size:30px;color:#fff;margin-bottom:2px;letter-spacing:.02em;}
.flagship-card .en{font-size:14px;color:var(--brand-lt);font-style:italic;margin-bottom:18px;}
.flagship-card .cas{
  display:inline-block;font-family:var(--mono);font-size:14px;font-weight:700;
  color:#fff;background:rgba(255,255,255,.12);padding:5px 13px;border-radius:7px;margin-bottom:20px;
  border:1px solid rgba(255,255,255,.14);
}
.flagship-card .desc{font-size:14.5px;color:#a9d8c4;margin-bottom:22px;}
.flagship-card .kv-list{list-style:none;margin:0 0 24px;padding:0;}
.flagship-card .kv-list li{
  display:grid;grid-template-columns:96px 1fr;gap:12px;
  font-size:14px;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.10);
}
.flagship-card .kv-list li:last-child{border-bottom:0;}
.flagship-card .kv-list .k{color:#8fc4ad;font-size:12.5px;letter-spacing:.04em;}
.flagship-card .kv-list .v{color:#fff;}

/* 两个主推产品的 inquire 按钮统一 */
.btn-sm{
  display:inline-flex;align-items:center;gap:7px;
  padding:11px 22px;border-radius:8px;font-size:14px;font-weight:600;
  background:linear-gradient(100deg,var(--brand),var(--brand-dk));
  color:#fff;transition:all .2s;
  box-shadow:0 4px 14px rgba(0,201,138,.28);
}
.btn-sm:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(0,201,138,.40);}

/* ---------- Four business lines ---------- */
.lines{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  position:relative;z-index:2;
}
.line{background:var(--surface);padding:36px 34px;position:relative;transition:all .2s;display:block;}
.line:hover{background:var(--surface-2);}
.line .idx{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--brand-dk);letter-spacing:.1em;margin-bottom:14px;}
.line h3{font-size:21px;color:var(--ink);margin-bottom:8px;}
.line .en{font-size:13px;color:var(--ink-mute);letter-spacing:.04em;margin-bottom:16px;}
.line p{font-size:14.5px;color:var(--ink-soft);margin-bottom:18px;}
.line .meta{display:flex;gap:10px;flex-wrap:wrap;}
.line .chip{
  font-size:12px;font-weight:600;color:var(--ink-2);
  background:var(--surface-3);border:1px solid var(--line);
  padding:4px 11px;border-radius:20px;
}
.line .more{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:700;color:var(--brand-dk);}
.line .more:hover{gap:10px;}

/* ---------- Count block ---------- */
.count-block{
  display:flex;align-items:center;gap:28px;
  background:linear-gradient(100deg,var(--surface-2),#fff);
  border:1px solid var(--line);border-radius:14px;padding:30px 34px;flex-wrap:wrap;
  position:relative;z-index:2;
  box-shadow:0 0 0 3px rgba(0,201,138,.06);
}
.count-block .num{
  font-size:56px;font-weight:700;line-height:1;
  background:linear-gradient(100deg,var(--brand-dk),var(--cyan));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.count-block .num small{font-size:22px;}
.count-block .txt{flex:1;min-width:220px;}
.count-block .txt h4{font-size:18px;color:var(--ink);margin-bottom:6px;}
.count-block .txt p{font-size:14px;color:var(--ink-soft);margin:0;}

/* ---------- Category nav chips ---------- */
.cat-nav{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:26px;padding-top:24px;border-top:1px solid var(--line);}
.cat-nav-title{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);font-weight:700;margin-right:4px;}
.cat-chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);
  padding:7px 14px;border-radius:22px;transition:all .18s;
}
.cat-chip:hover{border-color:var(--brand);color:var(--brand-dk);background:var(--surface-3);transform:translateY(-1px);}
.cat-chip b{font-size:11.5px;color:var(--brand-dk);font-weight:700;}

/* ---------- Data table ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-sm);position:relative;z-index:2;
}
.tbl-scroll{overflow-x:auto;}
table.data{width:100%;border-collapse:collapse;font-size:14.5px;min-width:860px;}
table.data thead th{
  background:linear-gradient(100deg,var(--ink-2),var(--hero-2));
  color:#fff;text-align:left;padding:15px 18px;font-weight:600;font-size:13px;
  letter-spacing:.05em;text-transform:uppercase;white-space:nowrap;
}
table.data tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top;}
table.data tbody tr:last-child td{border-bottom:0;}
table.data tbody tr:hover{background:var(--surface-2);}
table.data td.name{color:var(--ink);font-weight:600;}
table.data td.name .zh,
table.data td.name span.zh{
  display:block;font-size:12px;color:var(--ink-mute);font-weight:400;margin-top:3px;line-height:1.45;
}
table.data .cas{font-family:var(--mono);font-size:12.5px;color:var(--brand-dk);font-weight:700;}
table.data .formula{font-family:var(--mono);font-size:12.5px;}
table.data td.num{font-family:var(--mono);font-size:12.5px;color:var(--ink-mute);font-weight:600;}
table.data td.abbr{font-size:13px;color:var(--ink);font-weight:700;}
table.data .badge{
  display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;
  background:var(--surface-3);color:var(--ink-2);
}
table.data .badge.hot{background:linear-gradient(100deg,#d6f7ea,#c8f2ff);color:var(--brand-dk);}

/* ---------- Feature rows ---------- */
.feat{display:grid;grid-template-columns:64px 1fr;gap:22px;padding:26px 0;border-bottom:1px solid var(--line);}
.feat:last-child{border-bottom:0;}
.feat .n{font-size:13px;font-weight:700;color:var(--brand-dk);font-family:var(--mono);letter-spacing:.05em;padding-top:3px;}
.feat h3{font-size:18px;color:var(--ink);margin-bottom:6px;}
.feat p{font-size:14.5px;color:var(--ink-soft);}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:2;}
.split--rev .split-media{order:2;}
.split-media{
  border-radius:16px;overflow:hidden;
  background:linear-gradient(150deg,var(--hero-1),var(--hero-2));
  min-height:340px;display:grid;place-items:center;padding:40px;position:relative;
  box-shadow:0 16px 48px rgba(10,43,31,.14);
}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 300px at 50% 40%,rgba(63,216,255,.28),transparent 70%);
}
.split-media svg{width:100%;height:auto;max-width:340px;position:relative;z-index:2;}
.split-media .cap{position:relative;z-index:2;color:#8fc4ad;font-size:13px;text-align:center;margin-top:24px;letter-spacing:.06em;}

/* ---------- Spec list ---------- */
.spec-list{list-style:none;margin:0;padding:0;}
.spec-list li{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-soft);}
.spec-list li:last-child{border-bottom:0;}
.spec-list li::before{
  content:"";flex:0 0 8px;height:8px;border-radius:50%;
  background:linear-gradient(100deg,var(--brand),var(--cyan));margin-top:9px;
}
.spec-list li b{color:var(--ink);font-weight:600;}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(100deg,var(--surface-2),#fff);
  border:1px solid var(--line);
  border-radius:16px;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  box-shadow:0 0 0 3px rgba(0,201,138,.07),var(--shadow-md);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;
  width:420px;height:420px;
  background:radial-gradient(circle,rgba(63,216,255,.16),transparent 68%);
}
.cta-band h2{font-size:28px;margin-bottom:8px;color:var(--ink);}
.cta-band p{color:var(--ink-soft);font-size:15.5px;max-width:520px;}
.cta-band .btn{position:relative;z-index:2;}

/* ---------- Page hero ---------- */
.page-hero{
  background:linear-gradient(150deg,var(--hero-1),var(--hero-2));
  color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-80px;
  width:460px;height:460px;
  background:radial-gradient(circle,rgba(63,216,255,.24),transparent 68%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:
    linear-gradient(rgba(94,240,192,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,240,192,.10) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse at 70% 20%, #000 10%, transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 20%, #000 10%, transparent 70%);
}
.page-hero .wrap{position:relative;z-index:3;}
.page-hero h1{font-size:38px;margin-bottom:12px;}
.page-hero p{color:#a9d8c4;font-size:16.5px;max-width:680px;}
.crumb{font-size:12.5px;color:#8fc4ad;margin-bottom:18px;}
.crumb a:hover{color:var(--brand-lt);}
.crumb .sep{margin:0 8px;opacity:.5;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:start;position:relative;z-index:2;}
.info-row{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);}
.info-row:last-child{border-bottom:0;}
.info-row .k{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);font-weight:700;padding-top:3px;}
.info-row .v{font-size:15.5px;color:var(--ink);font-weight:500;}
.info-row .v a:hover{color:var(--brand-dk);}
.info-row .v .note{display:block;font-size:13px;color:var(--ink-mute);font-weight:400;margin-top:3px;}

.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:34px 32px;box-shadow:var(--shadow-md);
}
.form-card h3{font-size:20px;color:var(--ink);margin-bottom:6px;}
.form-card .hint{font-size:13.5px;color:var(--ink-mute);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:7px;letter-spacing:.03em;}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;font-size:14.5px;font-family:inherit;
  border:1px solid var(--line);border-radius:8px;background:var(--surface-2);
  color:var(--ink);transition:all .18s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(0,201,138,.12);}
.field textarea{min-height:110px;resize:vertical;}
.form-note{font-size:12.5px;color:var(--ink-mute);margin-top:14px;line-height:1.6;}

/* ---------- Footer ---------- */
.site-footer{background:var(--surface);color:var(--ink-soft);padding:64px 0 0;font-size:14px;border-top:1px solid var(--line);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px;}
.foot-brand .name{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.foot-brand .en{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:18px;}
.foot-brand p{font-size:13.5px;line-height:1.8;max-width:300px;}
.foot-col h4{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);font-weight:700;margin-bottom:18px;}
.foot-col ul{list-style:none;margin:0;padding:0;}
.foot-col li{margin-bottom:11px;}
.foot-col li a{font-size:13.5px;color:var(--ink-soft);transition:color .18s;}
.foot-col li a:hover{color:var(--brand-dk);}
.foot-col .contact-line{font-size:13.5px;margin-bottom:11px;line-height:1.7;}
.foot-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-mute);
}

/* ---------- Notice ---------- */
.notice{
  background:#fff8e6;border:1px solid #f2e2b8;border-left:4px solid #e0a800;
  border-radius:8px;padding:16px 20px;font-size:14px;color:#7c4a0a;
}
.notice b{color:#5c3608;}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .g4{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .split{gap:40px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .burger{display:block;}
  .hero h1{font-size:34px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .g2,.g3{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;}
  .split--rev .split-media{order:0;}
  .contact-grid{grid-template-columns:1fr;gap:40px;}
  .section{padding:60px 0;}
  .h2{font-size:27px;}
  .page-hero h1{font-size:29px;}
  .cta-band{padding:40px 30px;}
  .flagship{grid-template-columns:1fr;}
  .flagship-card{border-right:0;border-bottom:1px solid rgba(255,255,255,.10);}
  .flagship-card:last-child{border-bottom:0;}
  .lines{grid-template-columns:1fr;}
  .line{padding:28px 24px;}
  .nav-right .nav-cta{display:none;}
  .lang-switch{display:none;}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:stretch;
    position:absolute;top:76px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);padding:12px 20px 18px;z-index:40;
  }
  .nav-links.open a{padding:12px 4px;border-bottom:1px solid var(--line);}
  .nav-links.open::after{
    content:"简体中文 / EN";display:block;padding:14px 4px 2px;
    font-size:13px;color:var(--ink-mute);font-weight:600;
  }
}
@media (max-width:620px){
  .wrap{padding:0 20px;}
  .g4{grid-template-columns:1fr;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .foot-grid{grid-template-columns:1fr;}
  .info-row{grid-template-columns:1fr;gap:6px;}
  .flagship-card{padding:30px 24px;}
  .flagship-card h3{font-size:25px;}
  .flagship-card .kv-list li{grid-template-columns:80px 1fr;gap:8px;}
  .count-block{padding:24px 22px;}
  .count-block .num{font-size:44px;}
}

/* ---------- Monomer search box ---------- */
.search-box{
  display:flex;align-items:center;gap:12px;margin-top:24px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:8px 12px;box-shadow:var(--shadow-sm);
  transition:border-color .18s,box-shadow .18s;position:relative;z-index:2;
}
.search-box:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(0,201,138,.14);
}
.search-box svg{width:20px;height:20px;flex:0 0 20px;color:var(--brand-dk);}
.search-box input{
  flex:1;border:0;outline:0;font-size:15px;font-family:inherit;
  color:var(--ink);background:transparent;padding:8px 0;min-width:0;
}
.search-box input::placeholder{color:var(--ink-mute);}
.search-box button{
  border:1px solid var(--line);background:var(--surface-2);
  color:var(--ink-soft);font-size:13px;font-weight:600;font-family:inherit;
  padding:7px 15px;border-radius:8px;cursor:pointer;transition:all .18s;flex:0 0 auto;
}
.search-box button:hover{border-color:var(--brand);color:var(--brand-dk);background:#fff;}

.search-status{font-size:13.5px;margin-top:12px;min-height:20px;position:relative;z-index:2;}
.search-status.ok{color:var(--brand-dk);font-weight:600;}
.search-status.none{color:#b4601a;font-weight:600;}

@media (max-width:620px){
  .search-box{flex-wrap:wrap;}
  .search-box input{flex:1 1 160px;}
}

/* ============================================================
   Tech-style Hero (index refresh)
   ============================================================ */

/* 覆盖旧 hero 的分子图，改用网格+扫描线+光晕 */
.hero--tech{overflow:hidden;position:relative;}
.hero--tech .hero-mol{display:none;}

.hero-grid{
  position:absolute;inset:0;z-index:0;opacity:.55;
  background-image:
    linear-gradient(rgba(94,240,192,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,240,192,.09) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 70% at 25% 50%, #000 0%, transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 25% 50%, #000 0%, transparent 70%);
}
/* 扫描线 */
.hero-scan{
  position:absolute;left:0;right:0;height:180px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg, transparent, rgba(94,240,192,.10), transparent);
  animation:scan 9s linear infinite;
}
@keyframes scan{
  0%{transform:translateY(-200px);} 100%{transform:translateY(820px);}
}
.hero-glow{position:absolute;border-radius:50%;pointer-events:none;z-index:0;filter:blur(60px);}
.hero-glow.g1{
  width:620px;height:620px;right:-140px;top:-220px;
  background:radial-gradient(circle,rgba(63,216,255,.30),transparent 65%);
}
.hero-glow.g2{
  width:520px;height:520px;left:-160px;bottom:-240px;
  background:radial-gradient(circle,rgba(0,201,138,.28),transparent 66%);
}

/* Hero tag */
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;
  color:var(--brand-lt);
  background:rgba(94,240,192,.10);
  border:1px solid rgba(94,240,192,.28);
  padding:7px 16px;border-radius:30px;margin-bottom:22px;
  backdrop-filter:blur(4px);
}
.hero-tag .dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand-lt);
  box-shadow:0 0 0 4px rgba(94,240,192,.22);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;} 50%{opacity:.45;}}

/* Hero stats 上标 */
.hero-stat .v sup{
  font-size:.52em;font-weight:700;color:var(--brand-lt);
  vertical-align:super;margin-left:2px;letter-spacing:.02em;
}

/* 箭头统一 */
.arw{transition:transform .2s;display:inline-block;}
.btn:hover .arw,.btn-sm:hover .arw,.line .more:hover .arw{transform:translateX(4px);}

/* Flagship 顶栏 */
.fc-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.fc-tag{
  font-size:11px;font-weight:700;color:#fff;
  border:1px solid rgba(255,255,255,.35);
  padding:3px 10px;border-radius:20px;letter-spacing:.06em;
}

/* Capability strip */
.caps{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:26px;
  position:relative;z-index:2;
}
.cap-item{background:var(--surface);padding:30px 30px;transition:background .2s;}
.cap-item:hover{background:var(--surface-2);}
.cap-n{
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--brand-dk);
  letter-spacing:.1em;margin-bottom:12px;
}
.cap-item h4{font-size:17px;color:var(--ink);margin-bottom:8px;font-weight:600;}
.cap-item p{font-size:14.5px;color:var(--ink-soft);}

@media (max-width:900px){
  .caps{grid-template-columns:1fr;}
  .cap-item{padding:24px 22px;}
  .hero-scan{display:none;}
}

/* ============================================================
   Hero logo hologram + Sci-fi enhancements
   ============================================================ */

.hero-visual{
  position:absolute;right:2%;top:50%;transform:translateY(-50%);
  width:520px;height:520px;z-index:2;pointer-events:none;
  display:grid;place-items:center;
}
.hv-core{position:relative;width:420px;height:420px;display:grid;place-items:center;}

/* 同心旋转环 */
.hv-ring{
  position:absolute;border-radius:50%;border:1px solid rgba(94,240,192,.22);
}
.hv-ring.r1{width:400px;height:400px;border-style:dashed;animation:spin 34s linear infinite;}
.hv-ring.r2{width:320px;height:320px;border-color:rgba(63,216,255,.20);animation:spin 24s linear reverse infinite;}
.hv-ring.r3{width:240px;height:240px;border-color:rgba(94,240,192,.28);border-style:dotted;animation:spin 18s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* 六边形线框 */
.hv-hex{position:absolute;display:grid;place-items:center;}
.hv-hex svg{width:100%;height:100%;}
.hv-hex.h1{width:330px;height:330px;animation:spin 46s linear infinite;}
.hv-hex.h2{width:250px;height:250px;animation:spin 32s linear reverse infinite;}

/* 中心光晕 */
.hv-halo{
  position:absolute;width:230px;height:230px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,201,138,.40),rgba(63,216,255,.14) 55%,transparent 72%);
  filter:blur(14px);animation:halo 4.6s ease-in-out infinite;
}
@keyframes halo{0%,100%{transform:scale(1);opacity:.85;} 50%{transform:scale(1.10);opacity:1;}}

/* 标志本体 */
.hv-logo{
  position:relative;z-index:3;width:150px;height:150px;object-fit:contain;
  filter:drop-shadow(0 0 26px rgba(94,240,192,.75)) drop-shadow(0 0 60px rgba(0,201,138,.35));
  animation:logoFloat 6s ease-in-out infinite;
}
@keyframes logoFloat{0%,100%{transform:translateY(0);} 50%{transform:translateY(-9px);}}

/* 轨道光点 */
.hv-orb{
  position:absolute;width:9px;height:9px;border-radius:50%;
  background:var(--brand-lt);box-shadow:0 0 14px 3px rgba(94,240,192,.75);z-index:4;
}
.hv-orb.o1{top:10px;left:50%;margin-left:-4.5px;animation:orbit 12s linear infinite;}
.hv-orb.o2{width:7px;height:7px;background:var(--cyan);box-shadow:0 0 12px 3px rgba(63,216,255,.7);animation:orbit2 17s linear infinite;}
.hv-orb.o3{width:6px;height:6px;animation:orbit3 9s linear infinite;}
@keyframes orbit{
  from{transform:rotate(0deg) translateX(200px) rotate(0deg);}
  to{transform:rotate(360deg) translateX(200px) rotate(-360deg);}
}
@keyframes orbit2{
  from{transform:rotate(120deg) translateX(160px) rotate(-120deg);}
  to{transform:rotate(480deg) translateX(160px) rotate(-480deg);}
}
@keyframes orbit3{
  from{transform:rotate(240deg) translateX(120px) rotate(-240deg);}
  to{transform:rotate(600deg) translateX(120px) rotate(-600deg);}
}

/* 全息扫描线 */
.hv-scan{
  position:absolute;left:0;right:0;height:120px;z-index:5;
  background:linear-gradient(180deg,transparent,rgba(94,240,192,.22),transparent);
  animation:hvScan 5.5s linear infinite;border-radius:12px;
}
@keyframes hvScan{0%{transform:translateY(-260px);opacity:0;} 20%{opacity:1;} 80%{opacity:1;} 100%{transform:translateY(260px);opacity:0;}}

@media (max-width:1080px){ .hero-visual{width:340px;height:340px;opacity:.55;right:-40px;} .hv-core{width:300px;height:300px;} }
@media (max-width:900px){ .hero-visual{display:none;} }

/* ---------- Sci-fi global enhancements ---------- */

/* 宽幅强调的能力项 */
.cap-item--wide{
  grid-column:1 / -1;
  background:linear-gradient(100deg,var(--surface-2),#fff);
  border-top:1px solid var(--line);
}
.cap-item--wide::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--cyan));
}
.cap-item{position:relative;}
.cap-item--wide h4{color:var(--brand-dk);}

/* 卡片霓虹描边 */
.card,.cap-item,.line,.count-block,.table-wrap,.form-card{
  position:relative;
}
.card::after,.cap-item::after,.line::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  border:1px solid transparent;transition:border-color .25s,box-shadow .25s;
}
.card:hover::after,.cap-item:hover::after{
  border-color:rgba(0,201,138,.45);
  box-shadow:0 0 22px rgba(0,201,138,.18) inset;
}
.line:hover::after{border-color:rgba(0,201,138,.35);}

/* 区块标题的科技下划线 */
.sec-head .rule{
  position:relative;overflow:hidden;
  background:linear-gradient(90deg,var(--brand),var(--cyan),var(--brand));
  background-size:200% 100%;animation:flow 4s linear infinite;
}
@keyframes flow{to{background-position:200% 0;}}

/* eyebrow 加辉光点 */
.eyebrow::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--brand);margin-right:8px;vertical-align:middle;
  box-shadow:0 0 8px 2px rgba(0,201,138,.55);
}

/* 页头/页脚顶部光带 */
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--cyan),transparent);
  opacity:.65;
}
.site-header{position:sticky;}

/* 主推卡片的边角装饰 */
.flagship-card{overflow:hidden;}
.flagship-card::before{
  content:"";position:absolute;top:0;right:0;width:120px;height:120px;
  background:radial-gradient(circle at 100% 0%,rgba(94,240,192,.22),transparent 70%);
  pointer-events:none;
}

/* CTA 带扫描微光 */
.cta-band::after{
  content:"";position:absolute;top:0;bottom:0;width:180px;
  background:linear-gradient(90deg,transparent,rgba(94,240,192,.16),transparent);
  animation:ctaSweep 7s linear infinite;
}
@keyframes ctaSweep{0%{left:-180px;} 100%{left:100%;}}

/* 数据表格行悬停发光 */
table.data tbody tr:hover{background:linear-gradient(90deg,var(--surface-3),var(--surface-2));}

/* 数字计数块辉光 */
.count-block::before{
  content:"";position:absolute;inset:-1px;border-radius:15px;pointer-events:none;
  background:linear-gradient(120deg,rgba(0,201,138,.35),transparent 40%,transparent 60%,rgba(63,216,255,.30));
  -webkit-mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
}