/* ==========================================================================
   郑州恒达超硬材料有限公司 · 站点样式（v2 · 工业精密风）
   设计口径：石墨深色 + 钢蓝 + 商标蓝点缀，发丝描边，大量留白
   ========================================================================== */

/* ---------- 基础变量 ---------- */
:root{
  --ink:#0F1720;
  --ink-2:#1C2A38;
  --steel:#3A4E60;
  --muted:#6C7C89;
  --line:#E4E9EE;
  --line-2:#EFF3F6;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FA;
  --bg-deep:#0D1721;
  --brand:#14425C;
  --accent:#2563EB;
  --accent-soft:#E9EFFD;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(15,23,32,.04), 0 2px 8px rgba(15,23,32,.04);
  --shadow-md:0 4px 12px rgba(15,23,32,.06), 0 16px 40px rgba(15,23,32,.07);
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Inter","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SF Mono","JetBrains Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px;box-shadow:var(--shadow-md)}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (max-width:640px){.wrap{padding:0 20px}}

/* ---------- 顶栏 ---------- */
.site-head{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.head-in{display:flex;align-items:center;gap:32px;height:72px}

.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{width:auto;height:36px;flex:0 0 auto;object-fit:contain}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-cn{font-size:16.5px;font-weight:700;letter-spacing:.06em;color:var(--ink)}
.brand-en{font-family:var(--mono);font-size:9.5px;letter-spacing:.19em;color:var(--muted);margin-top:4px;text-transform:uppercase}

.nav{margin-left:auto}
.nav ul{display:flex;gap:4px}
.nav a{
  display:block;padding:8px 14px;font-size:14.5px;color:var(--steel);
  border-radius:999px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav a:hover{color:var(--ink);background:var(--bg-soft)}
.nav a[aria-current="page"]{color:var(--brand);background:var(--accent-soft);font-weight:600}

.head-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.head-tel{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:14px;color:var(--ink);letter-spacing:.02em}
.head-tel svg{color:var(--accent)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:999px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#0E3145}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:#C9D3DB;background:var(--bg-soft)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:#EAF2F6}
.btn-sm{height:36px;padding:0 15px;font-size:13.5px}

.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;border:1px solid var(--line);
  background:#fff;border-radius:10px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:17px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--ink);transition:.2s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

@media (max-width:1024px){
  .nav{
    position:fixed;inset:72px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px 20px;display:none;box-shadow:var(--shadow-md);margin-left:0;
  }
  body.nav-open .nav{display:block}
  .nav ul{flex-direction:column;gap:2px}
  .nav a{padding:12px 10px;border-radius:8px;font-size:15.5px}
  .nav-toggle{display:flex;margin-left:auto}
  .head-actions .head-tel{display:none}
  .head-in{gap:16px;height:64px}
  body.nav-open .nav{inset:64px 0 auto 0}
}
@media (max-width:560px){
  .head-actions .btn{display:none}
  .brand-cn{font-size:15px}
}

/* ---------- 语言切换 ---------- */
.lang{position:relative}
.lang summary{
  display:flex;align-items:center;gap:6px;height:32px;padding:0 10px;border-radius:999px;
  border:1px solid var(--line);background:#fff;cursor:pointer;list-style:none;
  font-family:var(--mono);font-size:12px;color:var(--steel);letter-spacing:.04em;
}
.lang summary::-webkit-details-marker{display:none}
.lang summary:hover{border-color:#C9D3DB;color:var(--ink)}
.lang summary svg{opacity:.65}
.lang[open] summary{border-color:var(--brand);color:var(--brand)}
.lang ul{
  position:absolute;right:0;top:calc(100% + 8px);min-width:158px;background:#fff;
  border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-md);
  padding:6px;z-index:140;
}
.lang li a{display:block;padding:8px 12px;border-radius:6px;font-size:13.5px;color:var(--steel);white-space:nowrap}
.lang li a:hover{background:var(--bg-soft);color:var(--ink)}
.lang li a[aria-current="true"]{color:var(--brand);font-weight:600;background:var(--accent-soft)}
@media (max-width:1024px){
  .head-actions{margin-left:auto}
  .lang ul{right:auto;left:0}
}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;background:var(--bg-deep);color:#fff;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1100px 520px at 78% 8%, rgba(37,99,235,.30), transparent 62%),
    linear-gradient(100deg, rgba(9,17,24,.96) 0%, rgba(9,17,24,.86) 46%, rgba(9,17,24,.52) 100%);
}
.hero-grid{
  position:absolute;inset:0;z-index:-1;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000,transparent 72%);
  mask-image:radial-gradient(120% 90% at 20% 0%,#000,transparent 72%);
}
.hero-in{padding-top:112px;position:relative}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;
  color:#9CC0FF;border:1px solid rgba(156,192,255,.38);border-radius:999px;padding:6px 14px;
  background:rgba(37,99,235,.14);
}
.hero h1{
  margin:26px 0 0;font-size:clamp(34px,5.2vw,62px);line-height:1.14;letter-spacing:-.02em;
  font-weight:650;max-width:16em;
}
.hero h1 em{font-style:normal;color:#A8C6FF}
.hero .lede{
  margin-top:22px;max-width:38em;font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:78px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts li{padding:26px 24px 34px;border-right:1px solid rgba(255,255,255,.10)}
.hero-facts li:first-child{padding-left:0}
.hero-facts li:last-child{border-right:0}
.hero-facts b{display:block;font-family:var(--mono);font-size:26px;font-weight:600;letter-spacing:-.01em;color:#fff}
.hero-facts span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.02em}
@media (max-width:900px){
  .hero-in{padding-top:72px}
  .hero-facts{grid-template-columns:repeat(2,1fr);margin-top:52px}
  .hero-facts li{padding:20px 18px 26px;border-bottom:1px solid rgba(255,255,255,.10)}
  .hero-facts li:first-child{padding-left:18px}
  .hero-facts li:nth-child(2n){border-right:0}
}
@media (max-width:560px){
  .hero-in{padding-top:56px}
  .hero .lede{font-size:15.5px}
  .hero-facts b{font-size:21px}
  .hero-facts span{font-size:12px}
}

/* ---------- 通用区块 ---------- */
.section{padding:100px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:72px 0}
@media (max-width:820px){.section{padding:68px 0}.section--tight{padding:52px 0}}

.sec-head{max-width:760px;margin-bottom:52px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-num{
  display:flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;color:var(--accent);text-transform:uppercase;
}
.sec-num::after{content:"";height:1px;width:52px;background:currentColor;opacity:.4}
.sec-head h2{margin-top:16px;font-size:clamp(26px,3.1vw,38px);letter-spacing:-.018em;color:var(--ink)}
.sec-head p{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.85}

/* ---------- 产品卡 ---------- */
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media (max-width:1100px){.pgrid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:820px){.pgrid{grid-template-columns:repeat(2,1fr);gap:16px}}
@media (max-width:520px){
  .pgrid{grid-template-columns:1fr}
  .pcard-media{aspect-ratio:16/10}
}

.pcard{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.pcard:hover{transform:translateY(-4px);border-color:#CFDAE2;box-shadow:var(--shadow-md)}
.pcard-media{position:relative;aspect-ratio:4/3;background:#F1F4F6;overflow:hidden}
.pcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}
.pcard:hover .pcard-media img{transform:scale(1.045)}
.pcard-cat{
  position:absolute;left:12px;top:12px;padding:4px 9px;border-radius:999px;
  background:rgba(255,255,255,.92);color:var(--brand);
  font-size:11px;letter-spacing:.06em;font-weight:600;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.pcard-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.pcard-body h3{font-size:16px;line-height:1.45;letter-spacing:0}
.pcard-body .desc{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7;flex:1}
.pcard-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.tag{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--steel);
  background:var(--bg-soft);border:1px solid var(--line);border-radius:5px;padding:3px 7px;
}
.pcard-more{
  display:flex;align-items:center;gap:6px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line-2);font-size:13px;font-weight:600;color:var(--brand);
}
.pcard-more svg{transition:transform .25s var(--ease)}
.pcard:hover .pcard-more svg{transform:translateX(3px)}

/* 图片缺失占位（图片到位后自动消失） */
.ph{
  background:
    repeating-linear-gradient(135deg,rgba(20,66,92,.05) 0 2px,transparent 2px 9px),
    linear-gradient(160deg,#EDF2F5,#DDE6EB);
  display:flex;align-items:center;justify-content:center;position:relative;
}
.ph::after{
  content:attr(data-label);font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  color:#75838F;text-align:center;padding:0 18px;line-height:1.7;
}
.ph img{display:none}
/* Hero 底色本身是深色，缺图时不显示占位文字，避免顶部出现浅色字迹 */
.hero-bg.ph::after{display:none}

/* ---------- 应用领域 ---------- */
.apps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.apps li{padding:34px 26px;border-right:1px solid var(--line);transition:background .25s var(--ease)}
.apps li:last-child{border-right:0}
.apps li:hover{background:var(--bg-soft)}
.app-ico{width:38px;height:38px;color:var(--accent);margin-bottom:18px}
.apps h3{font-size:15.5px}
.apps p{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.75}
@media (max-width:820px){
  .apps{grid-template-columns:repeat(2,1fr)}
  .apps li{border-bottom:1px solid var(--line);padding:26px 20px}
  .apps li:nth-child(2n){border-right:0}
  .apps li:nth-last-child(-n+2){border-bottom:0}
}

/* ---------- 为什么选我们 ---------- */
.why{display:grid;grid-template-columns:0.9fr 1.1fr;gap:72px;align-items:start}
.why-sticky{position:sticky;top:104px}
.why-sticky h2{margin-top:16px;font-size:clamp(26px,3vw,36px);line-height:1.3;letter-spacing:-.018em}
.why-sticky p{margin-top:18px;color:var(--muted);font-size:15px;line-height:1.85}
.why-list{counter-reset:why}
.why-list li{
  position:relative;padding:26px 0 26px 62px;border-top:1px solid var(--line);
}
.why-list li:last-child{border-bottom:1px solid var(--line)}
.why-list li::before{
  counter-increment:why;content:counter(why,decimal-leading-zero);
  position:absolute;left:0;top:26px;font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.1em;
}
.why-list h3{font-size:16.5px}
.why-list p{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.8}
@media (max-width:900px){
  .why{grid-template-columns:1fr;gap:34px}
  .why-sticky{position:static}
}

/* ---------- 参数表 ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14px}
table.spec th,table.spec td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}
table.spec thead th{
  background:var(--bg-soft);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--steel);font-weight:600;border-bottom:1px solid var(--line);
}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody tr:hover{background:#FAFCFD}
table.spec td:first-child{font-weight:600;color:var(--ink)}
table.spec code{font-family:var(--mono);font-size:12.5px;background:var(--bg-soft);padding:2px 6px;border-radius:4px}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:var(--bg-deep);color:#fff;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 320px at 82% 50%, rgba(37,99,235,.26), transparent 66%);
}
.cta-in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;padding-top:56px;padding-bottom:56px}
.cta-in h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.015em}
.cta-in p{margin-top:10px;color:rgba(255,255,255,.66);font-size:14.5px;max-width:34em}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}
@media (max-width:820px){
  .cta-in{flex-direction:column;align-items:flex-start;gap:24px;padding-top:44px;padding-bottom:44px}
}

/* ---------- 页脚 ---------- */
.site-foot{background:#0B131B;color:rgba(255,255,255,.62);padding:64px 0 0;font-size:13.5px}
.foot-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:52px}
.foot-brand .brand-cn{color:#fff}
.foot-brand .brand-en{color:rgba(255,255,255,.4)}
.foot-brand p{margin-top:18px;line-height:1.9;color:rgba(255,255,255,.5);max-width:26em;font-size:13px}
.foot-col h4{color:#fff;font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-family:var(--mono);font-weight:500;margin-bottom:18px}
.foot-col li{margin-bottom:11px;line-height:1.6}
.foot-col a{transition:color .2s var(--ease)}
.foot-col a:hover{color:#A8C6FF}
.foot-contact li{display:flex;gap:10px;align-items:flex-start}
.foot-contact svg{flex:0 0 auto;margin-top:4px;color:var(--accent);opacity:.9}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42);
}
.foot-bottom .lic{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
.foot-bottom a{color:rgba(255,255,255,.55)}
.foot-bottom a:hover{color:#fff}
@media (max-width:900px){
  .foot-main{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:560px){
  .foot-main{grid-template-columns:1fr;gap:30px}
  .site-foot{padding-top:48px}
}

/* ---------- 内页页头 ---------- */
.page-head{background:var(--bg-soft);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-head::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.12),transparent 68%);
}
.page-head-in{padding-top:60px;padding-bottom:56px;position:relative;max-width:820px}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);font-family:var(--mono);letter-spacing:.04em}
.crumb a:hover{color:var(--accent)}
.crumb span{opacity:.5}
.page-head h1{margin-top:18px;font-size:clamp(28px,3.6vw,42px);letter-spacing:-.02em}
.page-head .lede{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:44em}
@media (max-width:820px){.page-head-in{padding-top:40px;padding-bottom:36px}}

/* ---------- 分类筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:34px}
.chip{
  padding:8px 16px;border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:13.5px;color:var(--steel);cursor:pointer;transition:.2s var(--ease);
}
.chip:hover{border-color:#C9D3DB;color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.chip .n{font-family:var(--mono);font-size:10.5px;opacity:.6;margin-left:5px}

/* ---------- 产品详情 ---------- */
.pd{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:start}
.pd-media{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#F1F4F6;
  aspect-ratio:4/3;position:relative;
}
.pd-media img{width:100%;height:100%;object-fit:cover}
.pd-info h1{font-size:clamp(24px,3vw,34px);letter-spacing:-.02em}
.pd-info .cat{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase}
.pd-info .sum{margin-top:18px;color:var(--steel);font-size:15px;line-height:1.9}
.pd-tags{margin-top:22px;margin-bottom:0}
.pd-notes{margin-top:28px;border-top:1px solid var(--line);padding-top:22px}
.pd-notes dt{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-family:var(--mono);margin-bottom:6px}
.pd-notes dd{margin:0 0 18px;font-size:14px;line-height:1.8;color:var(--ink-2)}
.pd-notes dd:last-child{margin-bottom:0}
.pd-cta{display:flex;gap:10px;margin-top:28px;flex-wrap:wrap}
@media (max-width:900px){.pd{grid-template-columns:1fr;gap:32px}}

.pd-two{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.tech-layout{display:grid;grid-template-columns:1fr 300px;gap:64px;align-items:start}
@media (max-width:900px){
  .pd-two{grid-template-columns:1fr;gap:40px}
  .tech-layout{grid-template-columns:1fr;gap:36px}
}

.use-list li{
  position:relative;padding:15px 0 15px 22px;border-top:1px solid var(--line);
  font-size:14.5px;line-height:1.7;color:var(--ink-2);
}
.use-list li:last-child{border-bottom:1px solid var(--line)}
.use-list li::before{
  content:"";position:absolute;left:2px;top:1.42em;width:5px;height:5px;
  background:var(--accent);border-radius:1px;opacity:.72;
}

/* ---------- 文章 ---------- */
.article{max-width:760px}
.article h2{font-size:24px;margin:44px 0 14px;letter-spacing:-.015em}
.article h2:first-child{margin-top:0}
.article h3{font-size:17.5px;margin:30px 0 10px}
.article p{margin:14px 0;line-height:1.95;color:var(--ink-2)}
.article ul{margin:16px 0;padding-left:0}
.article ul li{position:relative;padding-left:20px;margin:9px 0;line-height:1.9;color:var(--ink-2)}
.article ul li::before{content:"";position:absolute;left:4px;top:.82em;width:5px;height:5px;border-radius:1px;background:var(--accent);opacity:.7}
.article .note{
  margin:24px 0;padding:18px 22px;background:var(--bg-soft);border-left:2px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:14px;color:var(--steel);line-height:1.85;
}
.article .meta{
  display:flex;gap:16px;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--muted);text-transform:uppercase;padding-bottom:22px;border-bottom:1px solid var(--line);
}
.art-list li{border-top:1px solid var(--line);padding:26px 0}
.art-list li:last-child{border-bottom:1px solid var(--line)}
.art-list a{display:block;transition:.2s var(--ease)}
.art-list h3{font-size:17.5px;transition:color .2s var(--ease)}
.art-list a:hover h3{color:var(--accent)}
.art-list p{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.8;max-width:52em}
.art-list .d{margin-top:10px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--muted);opacity:.8}

/* ---------- 关于 / 联系 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:36px}}
.prose h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.018em;margin-bottom:20px}
.prose p{margin:14px 0;line-height:1.95;color:var(--ink-2);font-size:15.5px}
.prose strong{font-weight:600;color:var(--ink)}
.prose ul{margin:18px 0}
.prose ul li{position:relative;padding-left:22px;margin:11px 0;line-height:1.9;color:var(--ink-2);font-size:15px}
.prose ul li::before{content:"";position:absolute;left:2px;top:.85em;width:5px;height:5px;border-radius:1px;background:var(--accent);opacity:.72}
.prose .note{
  margin:26px 0;padding:18px 22px;background:var(--bg-soft);border-left:2px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:14px;color:var(--steel);line-height:1.85;
}

.info-list li{display:flex;gap:16px;padding:22px 0;border-top:1px solid var(--line)}
.info-list li:last-child{border-bottom:1px solid var(--line)}
.info-list .k{
  flex:0 0 88px;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);padding-top:3px;
}
.info-list .v{font-size:15px;line-height:1.75;color:var(--ink)}
.info-list .v small{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.info-list .v a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(20,66,92,.22)}
.info-list .v a:hover{border-color:var(--accent);color:var(--accent)}

.scope-card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 32px;margin-top:8px;
}
.scope-card h3{font-size:14px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.scope-card p{font-size:14.5px;line-height:1.9;color:var(--steel)}

/* 商标展示卡（关于页） */
.brand-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.brand-panel img{height:132px;width:auto;max-width:100%}
@media (max-width:560px){.brand-panel img{height:104px}}

/* ---------- 底部联系卡 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.cc{
  border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;transition:.25s var(--ease);
}
.cc:hover{border-color:#CFDAE2;box-shadow:var(--shadow-sm)}
.cc .k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.cc .v{margin-top:10px;font-size:17px;font-weight:600;letter-spacing:.01em;color:var(--ink)}
.cc .v.mono{font-family:var(--mono);font-size:16px}
.cc p{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}

/* ---------- 动效 ---------- */
.rise{opacity:1;transform:none}
html.js .rise{opacity:0;transform:translateY(18px)}
html.js .rise.in{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html.js .rise{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 404 ---------- */
.err{min-height:62vh;display:flex;align-items:center;padding:80px 0}
.err .code{font-family:var(--mono);font-size:clamp(64px,12vw,132px);line-height:1;letter-spacing:-.04em;color:var(--line);font-weight:700}
.err h1{margin-top:8px;font-size:26px}
.err p{margin-top:14px;color:var(--muted);max-width:34em}
.err .acts{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}

/* ---------- 打印 ---------- */
@media print{
  .site-head,.site-foot,.cta-band,.hero-actions{display:none}
  body{font-size:12pt}
}