/* ==========================================================================
   德圣钢业 DESHENG STEEL — Brand Site
   石墨黑 / 不锈钢银 / 熔钢铜
   ========================================================================== */

:root{
  --ink:#0C0F12;
  --ink-2:#12171C;
  --ink-3:#1A2027;
  --paper:#F6F4F0;
  --paper-2:#EDEAE4;
  --paper-3:#E3DFD7;
  --white:#fff;

  --accent:#B45F32;
  --accent-2:#D08A57;
  --accent-dim:rgba(180,95,50,.14);

  --text:#1C2126;
  --muted:#6E757C;
  --muted-2:#9AA1A8;

  --line:rgba(12,15,18,.13);
  --line-soft:rgba(12,15,18,.07);
  --line-dark:rgba(255,255,255,.14);
  --line-dark-soft:rgba(255,255,255,.07);

  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --disp:"Bahnschrift","DIN Alternate","DIN Condensed","Arial Narrow","Helvetica Neue",Arial,sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC","SimSun",serif;

  --wrap:1300px;
  --pad:48px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
[id]{scroll-margin-top:104px}
body{
  margin:0;
  font-family:var(--sans);
  font-size:15.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--accent);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);position:relative}
.wrap-narrow{max-width:960px}

/* ---------- generic type ---------- */
.kicker{
  font-family:var(--disp);
  font-size:11.5px;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-weight:600;
}
.kicker::before{content:"";width:26px;height:1px;background:currentColor;opacity:.8}
.kicker.no-line::before{display:none}

.sec-title{
  font-size:clamp(26px,3vw,40px);
  line-height:1.28;
  letter-spacing:-.02em;
  font-weight:700;
  margin:16px 0 0;
  color:var(--ink);
}
.sec-title em{font-style:normal;color:var(--accent);white-space:nowrap}
.sec-desc{color:var(--muted);max-width:56ch;margin:16px 0 0;font-size:15px}

.sec{padding:110px 0;position:relative}
.sec--tight{padding:84px 0}
.sec--dark{background:var(--ink);color:var(--paper)}
.sec--dark .sec-title{color:#fff}
.sec--dark .sec-desc{color:rgba(255,255,255,.62)}
.sec--paper2{background:var(--paper-2)}

.sec-head{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:end}
.sec-head .head-l{max-width:none}
.sec-head .head-r{max-width:440px;justify-self:end;padding-bottom:4px}
.sec-desc{color:var(--muted);margin:0;font-size:14.5px;line-height:1.95}
.sec-head .head-r .link-more{margin-top:22px}
.sec-head > .btn{justify-self:end;align-self:end}
.head-l .sec-desc{margin-top:18px}
.num-ghost{
  font-family:var(--disp);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--muted-2);
  font-weight:600;
}
.sec--dark .num-ghost{color:rgba(255,255,255,.34)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:15px 30px;white-space:nowrap;flex:none;
  font-size:14px;letter-spacing:.06em;font-weight:600;
  background:var(--accent);color:#fff;
  border:1px solid var(--accent);
  border-radius:1px;
  transition:background .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease),transform .35s var(--ease);
  position:relative;
}
.btn svg{width:15px;height:15px;transition:transform .35s var(--ease)}
.btn:hover{background:#9E5128;border-color:#9E5128}
.btn:hover svg{transform:translateX(4px)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(255,255,255,.28)}
.btn--ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6);color:#fff}
.btn--ink{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--ink-3);border-color:var(--ink-3)}
.btn--line{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--line:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.link-more{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--disp);font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink);font-weight:600;padding-bottom:6px;border-bottom:1px solid var(--line);
  transition:color .3s,border-color .3s;
}
.link-more svg{width:14px;height:14px;transition:transform .3s var(--ease)}
.link-more:hover{color:var(--accent);border-color:var(--accent)}
.link-more:hover svg{transform:translateX(4px)}
.sec--dark .link-more{color:#fff;border-color:var(--line-dark)}
.sec--dark .link-more:hover{color:var(--accent-2);border-color:var(--accent-2)}

/* ==========================================================================
   HEADER
   ========================================================================== */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.55);
  font-size:12px;
  letter-spacing:.02em;
  border-bottom:1px solid rgba(255,255,255,.06);
  position:relative;z-index:60;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:38px}
.topbar .tb-l{display:flex;align-items:center;gap:26px}
.topbar .tb-l span{display:inline-flex;align-items:center;gap:7px}
.topbar .tb-l svg{width:13px;height:13px;opacity:.6}
.topbar .tb-r{display:flex;align-items:center;gap:18px}
.topbar a:hover{color:#fff}
.topbar .sep{width:1px;height:11px;background:rgba(255,255,255,.18)}

.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:height .35s var(--ease),background .35s var(--ease),box-shadow .35s;
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:88px;transition:height .35s var(--ease);
}
.site-header.is-compact .wrap{height:68px}
.site-header.is-raised{box-shadow:0 18px 40px -30px rgba(0,0,0,.9)}
.brand{display:flex;align-items:center;gap:0}
.brand img{height:38px;width:auto;transition:height .35s var(--ease)}
.is-compact .brand img{height:32px}

.nav{display:flex;align-items:center;gap:2px;margin:0 0 0 auto;padding:0;list-style:none}
.nav > li{position:relative;list-style:none}
.nav > li > a{
  display:block;padding:10px 15px;
  font-size:14.5px;color:rgba(255,255,255,.78);letter-spacing:.02em;
  position:relative;transition:color .28s;
  white-space:nowrap;
}
.nav > li > a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .35s var(--ease);
}
.nav > li > a:hover,.nav > li.is-active > a{color:#fff}
.nav > li > a:hover::after,.nav > li.is-active > a::after{transform:scaleX(1)}
.nav > li > a .en{display:block;font-family:var(--disp);font-size:9px;letter-spacing:.16em;opacity:.4;margin-top:-2px}

.nav-cta{display:flex;align-items:center;gap:14px;margin-left:26px}
.nav-cta .tel{display:flex;flex-direction:column;line-height:1.2;text-align:right}
.nav-cta .tel i{font-style:normal;font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.42);text-transform:uppercase}
.nav-cta .tel b{font-family:var(--disp);font-size:19px;font-weight:600;color:#fff;letter-spacing:.03em}
.btn--sm{padding:11px 20px;font-size:13px}

/* mega dropdown */
.mega{
  position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,10px);
  width:640px;background:var(--ink-2);
  border:1px solid rgba(255,255,255,.09);
  padding:26px;
  display:grid;grid-template-columns:1fr 1fr;gap:6px 26px;
  opacity:0;visibility:hidden;transition:all .3s var(--ease);
  box-shadow:0 40px 60px -40px #000;
}
.nav > li.has-mega:hover .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.07);
  font-size:14px;color:rgba(255,255,255,.8);transition:.28s;
}
.mega a small{font-family:var(--disp);font-size:10px;letter-spacing:.14em;color:rgba(255,255,255,.3)}
.mega a:hover{color:#fff;padding-left:10px}
.mega a:hover small{color:var(--accent-2)}

.burger{display:none;width:44px;height:44px;background:none;border:0;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:1.5px;background:#fff;transition:.3s var(--ease)}
.burger span:nth-child(1){top:17px}
.burger span:nth-child(2){top:23px}
.burger span:nth-child(3){top:29px}
body.menu-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-nav{
  position:fixed;inset:0;background:var(--ink);z-index:45;
  padding:110px var(--pad) 40px;overflow-y:auto;
  transform:translateY(-100%);transition:transform .5s var(--ease);
}
body.menu-open .mobile-nav{transform:translateY(0)}
.mobile-nav ul{list-style:none;margin:0;padding:0}
.mobile-nav > ul > li{border-bottom:1px solid rgba(255,255,255,.1)}
.mobile-nav a{display:block;padding:18px 0;font-size:19px;color:rgba(255,255,255,.85);font-weight:600}
.mobile-nav a small{font-family:var(--disp);font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.3);margin-left:10px;font-weight:400}
.mobile-nav .m-tel{margin-top:32px;color:#fff}
.mobile-nav .m-tel span{display:block;font-family:var(--disp);font-size:26px;color:var(--accent-2);letter-spacing:.02em}

/* ==========================================================================
   HERO (home)
   ========================================================================== */
.hero{
  position:relative;
  min-height:clamp(620px,92vh,900px);
  background:var(--ink);
  color:#fff;
  display:flex;flex-direction:column;justify-content:flex-end;
  overflow:hidden;
}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:60% 50%;opacity:.92;transform:scale(1.04);animation:heroZoom 18s var(--ease) forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(8,10,13,.94) 0%,rgba(8,10,13,.82) 34%,rgba(8,10,13,.30) 62%,rgba(8,10,13,.55) 100%),
    linear-gradient(180deg,rgba(8,10,13,.6) 0%,rgba(8,10,13,0) 30%,rgba(8,10,13,.35) 78%,rgba(8,10,13,.92) 100%);
}
.hero-inner{position:relative;z-index:3;padding-top:120px;padding-bottom:0;width:100%;flex:none}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:14px;
  font-family:var(--disp);font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;
  color:rgba(255,255,255,.62);
}
.hero-eyebrow .dot{width:6px;height:6px;background:var(--accent-2);border-radius:50%;box-shadow:0 0 0 4px rgba(208,138,87,.18)}
.hero h1{
  font-size:clamp(38px,5.4vw,78px);
  line-height:1.1;
  letter-spacing:-.03em;
  font-weight:800;
  margin:26px 0 0;
  max-width:15em;
  color:#fff;
}
.hero h1 em{font-style:normal;color:var(--accent-2);position:relative;white-space:nowrap}
.hero-lead{
  margin:28px 0 0;max-width:47ch;
  font-size:15.5px;line-height:1.95;color:rgba(255,255,255,.66);
}
.hero-actions{display:flex;align-items:center;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-side{
  position:absolute;right:calc(var(--pad) - 6px);top:42%;z-index:3;
  writing-mode:vertical-rl;
  font-family:var(--disp);font-size:10.5px;letter-spacing:.42em;text-transform:uppercase;
  color:rgba(255,255,255,.34);
}
.hero-stats{
  position:relative;z-index:3;margin-top:auto;width:100%;flex:none;
  border-top:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(2px);
}
.hero-stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px}
.hstat{padding:26px 26px 30px;border-right:1px solid rgba(255,255,255,.08)}
.hstat:last-child{border-right:0}
.hstat b{
  display:block;font-family:var(--disp);font-weight:600;
  font-size:clamp(28px,3vw,40px);line-height:1.05;color:#fff;letter-spacing:-.01em;
}
.hstat b i{font-style:normal;font-size:.46em;font-weight:500;color:var(--accent-2);margin-left:3px;letter-spacing:.06em}
.hstat > span{display:block;margin-top:8px;font-size:12.5px;color:rgba(255,255,255,.5);letter-spacing:.04em}

/* standards marquee */
.std-strip{
  background:var(--ink-2);border-top:1px solid rgba(255,255,255,.07);
  overflow:hidden;padding:17px 0;
}
.std-track{display:flex;gap:0;width:max-content;animation:slide 46s linear infinite}
.std-track span{
  font-family:var(--disp);font-size:12px;letter-spacing:.24em;text-transform:uppercase;
  color:rgba(255,255,255,.36);padding:0 34px;white-space:nowrap;
  border-right:1px solid rgba(255,255,255,.08);
}
@keyframes slide{to{transform:translateX(-50%)}}

/* ==========================================================================
   SECTION INDEX (left vertical label)
   ========================================================================== */
.sec-tag{
  position:absolute;left:calc(50% - (var(--wrap)/2) + 8px);top:0;
  writing-mode:vertical-rl;font-family:var(--disp);
  font-size:10.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted-2);
  display:none;
}

/* ==========================================================================
   PRODUCTS
   ========================================================================== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:54px}
.cat-card{
  background:var(--paper);padding:30px 26px 26px;
  display:flex;flex-direction:column;justify-content:space-between;min-height:210px;
  position:relative;overflow:hidden;transition:background .4s var(--ease);
}
.cat-card::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);
}
.cat-card:hover{background:#fff}
.cat-card:hover::after{transform:scaleX(1)}
.cat-card .cnum{font-family:var(--disp);font-size:12px;letter-spacing:.2em;color:var(--accent);font-weight:600}
.cat-card h3{font-size:21px;margin:16px 0 0;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.cat-card p{margin:10px 0 0;font-size:13px;color:var(--muted);line-height:1.7}
.cat-card .go{
  margin-top:24px;display:inline-flex;align-items:center;gap:9px;
  font-family:var(--disp);font-size:11px;letter-spacing:.2em;color:var(--muted);
  transition:color .3s;
}
.cat-card .go svg{width:13px;height:13px;transition:transform .3s var(--ease)}
.cat-card:hover .go{color:var(--accent)}
.cat-card:hover .go svg{transform:translateX(4px)}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:34px}
.prod-card{background:#fff;border:1px solid var(--line-soft);overflow:hidden;display:block;transition:box-shadow .45s var(--ease),transform .45s var(--ease),border-color .45s}
.prod-card:hover{box-shadow:0 30px 50px -34px rgba(12,15,18,.45);transform:translateY(-3px);border-color:var(--line)}
.prod-media{position:relative;aspect-ratio:4/4.6;overflow:hidden;background:var(--paper-2)}
.prod-media img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.prod-card:hover .prod-media img{transform:scale(1.06)}
.prod-media .tagline{
  position:absolute;left:14px;top:14px;
  background:rgba(12,15,18,.78);color:#fff;
  font-family:var(--disp);font-size:10px;letter-spacing:.16em;padding:5px 9px;
  backdrop-filter:blur(4px);
}
.prod-body{padding:20px 20px 22px}
.prod-body h3{font-size:16.5px;margin:0;font-weight:600;letter-spacing:-.01em;color:var(--ink);line-height:1.45}
.prod-body p{margin:8px 0 0;font-size:12.5px;color:var(--muted);font-family:var(--disp);letter-spacing:.04em}
.prod-body .spec{margin-top:14px;padding-top:12px;border-top:1px solid var(--line-soft);display:flex;gap:8px;flex-wrap:wrap}
.prod-body .spec i{font-style:normal;font-size:11px;color:var(--muted);border:1px solid var(--line);padding:2px 7px;letter-spacing:.02em}

/* ==========================================================================
   ADVANTAGE
   ========================================================================== */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.1);margin-top:60px;border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1)}
.adv-item{background:var(--ink);padding:38px 34px 42px;position:relative;transition:background .45s var(--ease)}
.adv-item:hover{background:var(--ink-3)}
.adv-item .n{font-family:var(--disp);font-size:12px;letter-spacing:.2em;color:var(--accent-2);font-weight:600}
.adv-item h3{margin:22px 0 0;font-size:19px;color:#fff;font-weight:700;letter-spacing:-.01em}
.adv-item h3 small{display:block;font-family:var(--disp);font-size:10.5px;letter-spacing:.2em;color:rgba(255,255,255,.32);font-weight:500;margin-top:6px;text-transform:uppercase}
.adv-item p{margin:16px 0 0;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.55)}

/* ==========================================================================
   PROCESS
   ========================================================================== */
.process{display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:58px;border-top:1px solid var(--line)}
.proc-step{padding:34px 20px 30px;border-right:1px solid var(--line);position:relative}
.proc-step:last-child{border-right:0}
.proc-step::before{
  content:"";position:absolute;top:-4px;left:20px;width:7px;height:7px;background:var(--paper);
  border:1px solid var(--accent);border-radius:50%;transition:background .3s;
}
.proc-step:hover::before{background:var(--accent)}
.proc-step .pn{font-family:var(--disp);font-size:11px;letter-spacing:.16em;color:var(--muted-2)}
.proc-step h4{margin:16px 0 0;font-size:16px;font-weight:700;color:var(--ink);line-height:1.4}
.proc-step p{margin:10px 0 0;font-size:12.5px;color:var(--muted);line-height:1.75}
.proc-step .thumb{margin-top:18px;aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.proc-step .thumb img{width:100%;height:100%;object-fit:cover;filter:grayscale(.35);transition:filter .5s,transform .8s var(--ease)}
.proc-step:hover .thumb img{filter:grayscale(0);transform:scale(1.05)}

/* ==========================================================================
   ABOUT SPLIT
   ========================================================================== */
.about-split{display:grid;grid-template-columns:1.05fr 1fr;gap:0;align-items:stretch}
.about-media{position:relative;min-height:560px;overflow:hidden;background:var(--ink-2)}
.about-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.about-media .stamp{
  position:absolute;left:0;bottom:0;background:var(--accent);color:#fff;
  padding:26px 30px;max-width:250px;
}
.about-media .stamp b{font-family:var(--disp);font-size:38px;line-height:1;display:block;font-weight:600}
.about-media .stamp span{font-size:12px;letter-spacing:.06em;opacity:.85;display:block;margin-top:8px}
.about-body{padding:clamp(40px,5vw,80px);background:var(--ink-2);color:var(--paper);display:flex;flex-direction:column;justify-content:center}
.about-body .sec-title,.contact-band .sec-title{color:#fff}
.about-body .link-more{color:#fff;border-color:var(--line-dark)}
.about-body .link-more:hover{color:var(--accent-2);border-color:var(--accent-2)}
.about-body p{color:rgba(255,255,255,.6);font-size:14.5px;line-height:2;margin:0 0 18px}
.about-body p strong{color:#fff;font-weight:600}
.about-facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.1);margin-top:34px;border:1px solid rgba(255,255,255,.1)}
.about-facts div{background:var(--ink-2);padding:20px 22px}
.about-facts b{display:block;font-family:var(--disp);font-size:22px;color:#fff;font-weight:600}
.about-facts div > span{font-size:11.5px;color:rgba(255,255,255,.42);letter-spacing:.05em}

/* ==========================================================================
   QUALITY
   ========================================================================== */
.quality-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:60px;margin-top:56px;align-items:start}
.q-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.q-list li{
  display:grid;grid-template-columns:52px 1fr;gap:20px;align-items:start;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.q-list .qi{font-family:var(--disp);font-size:12px;letter-spacing:.12em;color:var(--accent);padding-top:4px}
.q-list h4{margin:0;font-size:16.5px;font-weight:700;color:var(--ink)}
.q-list p{margin:6px 0 0;font-size:13px;color:var(--muted);line-height:1.8}
.cert-wall{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cert-wall figure{margin:0;background:#fff;border:1px solid var(--line-soft);padding:10px;overflow:hidden}
.cert-wall img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.cert-wall figure:hover img{transform:scale(1.03)}
.cert-wall .wide{grid-column:span 2}

/* ==========================================================================
   NEWS
   ========================================================================== */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:56px}
.news-col-h{display:flex;align-items:baseline;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-dark);margin-bottom:6px}
.news-col-h h3{margin:0;font-size:19px;color:#fff;font-weight:700;letter-spacing:-.01em}
.news-col-h h3 span{font-family:var(--disp);font-size:10.5px;letter-spacing:.2em;color:rgba(255,255,255,.32);margin-left:10px;font-weight:500}
.news-item{
  display:grid;grid-template-columns:64px 1fr;gap:22px;
  padding:22px 0;border-bottom:1px solid rgba(255,255,255,.09);
  transition:padding-left .4s var(--ease);
}
.news-item:hover{padding-left:8px}
.news-date{text-align:center;border-right:1px solid rgba(255,255,255,.12);padding-right:14px}
.news-date b{display:block;font-family:var(--disp);font-size:24px;line-height:1;color:#fff;font-weight:600}
.news-date span{display:block;font-family:var(--disp);font-size:10px;letter-spacing:.1em;color:rgba(255,255,255,.4);margin-top:6px}
.news-item h4{margin:0;font-size:15px;font-weight:600;color:rgba(255,255,255,.9);line-height:1.6;transition:color .3s}
.news-item:hover h4{color:var(--accent-2)}
.news-item p{margin:7px 0 0;font-size:12.5px;color:rgba(255,255,255,.42);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ==========================================================================
   CONTACT BAND
   ========================================================================== */
.contact-band{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.contact-band .bg{position:absolute;inset:0;opacity:.22}
.contact-band .bg img{width:100%;height:100%;object-fit:cover}
.contact-band .veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,13,16,.96) 0%,rgba(10,13,16,.86) 45%,rgba(10,13,16,.7) 100%)}
.contact-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:70px;padding:96px var(--pad)}
.contact-info .tel-big{display:flex;align-items:center;gap:16px;margin-top:34px}
.contact-info .tel-big svg{width:26px;height:26px;color:var(--accent-2);flex:none}
.contact-info .tel-big b{font-family:var(--disp);font-size:clamp(30px,3.4vw,44px);letter-spacing:.01em;font-weight:600;line-height:1}
.contact-info .tel-big span{display:block;font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.4);text-transform:uppercase;font-family:var(--disp)}
.c-rows{margin-top:34px;border-top:1px solid rgba(255,255,255,.12)}
.c-row{display:grid;grid-template-columns:88px 1fr;gap:16px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:13.5px}
.c-row dt{color:rgba(255,255,255,.36);font-size:12px;letter-spacing:.1em}
.c-row dd{margin:0;color:rgba(255,255,255,.82)}

.form-card{background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.12);padding:clamp(26px,3vw,40px);backdrop-filter:blur(6px)}
.form-card h3{margin:0 0 6px;font-size:20px;color:#fff;font-weight:700}
.form-card > p{margin:0 0 26px;font-size:12.5px;color:rgba(255,255,255,.45)}
.f-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{position:relative}
.field.full{grid-column:span 2}
.field input,.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);
  color:#fff;padding:13px 14px;font-size:13.5px;font-family:inherit;border-radius:1px;
  transition:border-color .3s,background .3s;
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.32)}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--accent);background:rgba(255,255,255,.07)}
.field select option{color:#111}
.form-note{margin-top:14px;font-size:11.5px;color:rgba(255,255,255,.35);display:flex;gap:8px;align-items:flex-start}
.form-msg{margin-top:14px;font-size:13px;color:var(--accent-2);display:none}
.form-msg.on{display:block}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{background:#080A0C;color:rgba(255,255,255,.5);font-size:13px;padding-top:70px}
.f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:50px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.08)}
.f-brand img{height:34px;margin-bottom:22px}
.f-brand p{max-width:34ch;line-height:1.9;font-size:12.5px;color:rgba(255,255,255,.42)}
.f-col h4{font-family:var(--disp);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.75);margin:0 0 20px;font-weight:600}
.f-col ul{list-style:none;margin:0;padding:0}
.f-col li{margin-bottom:12px}
.f-col a{font-size:12.5px;color:rgba(255,255,255,.45);transition:color .25s}
.f-col a:hover{color:#fff}
.f-contact div{display:flex;gap:10px;margin-bottom:14px;font-size:12.5px;line-height:1.7}
.f-contact svg{width:14px;height:14px;flex:none;margin-top:5px;opacity:.5}
.f-links{padding:28px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:11.5px;line-height:2.2}
.f-links b{font-family:var(--disp);letter-spacing:.18em;color:rgba(255,255,255,.3);font-size:10px;margin-right:12px;text-transform:uppercase}
.f-links a{color:rgba(255,255,255,.3);margin-right:16px;transition:color .25s}
.f-links a:hover{color:rgba(255,255,255,.7)}
.f-bot{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:24px 0;font-size:11.5px;color:rgba(255,255,255,.3);flex-wrap:wrap}
.f-bot a{color:rgba(255,255,255,.3)}
.f-bot a:hover{color:#fff}

/* floating side contact */
.float-tel{
  position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:40;
  display:flex;flex-direction:column;gap:1px;
}
.float-tel a{
  width:52px;height:52px;background:rgba(12,15,18,.9);border:1px solid rgba(255,255,255,.12);border-right:0;
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);
  transition:.3s var(--ease);
}
.float-tel a:hover{background:var(--accent);color:#fff;width:58px}
.float-tel svg{width:19px;height:19px}

/* ==========================================================================
   PAGE HERO (inner pages)
   ========================================================================== */
.page-hero{
  position:relative;background:var(--ink);color:#fff;overflow:hidden;
  padding:110px 0 64px;
}
.page-hero .bgimg{position:absolute;inset:0;opacity:.2}
.page-hero .bgimg img{width:100%;height:100%;object-fit:cover}
.page-hero .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,13,16,.75),rgba(10,13,16,.96))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(30px,4vw,52px);margin:20px 0 0;font-weight:800;letter-spacing:-.03em;line-height:1.15}
.page-hero .sub{margin:18px 0 0;color:rgba(255,255,255,.5);max-width:60ch;font-size:14px;line-height:1.9}
.crumb{
  display:flex;align-items:center;gap:10px;font-family:var(--disp);
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.38);
  margin-top:34px;
}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.4}

/* ==========================================================================
   INNER PAGE BLOCKS
   ========================================================================== */
.editorial{display:grid;grid-template-columns:1fr 1.15fr;gap:70px;align-items:start}
.editorial .lead{font-size:19px;line-height:1.85;color:var(--ink);font-weight:500;letter-spacing:-.01em;margin:0 0 24px}
.editorial p{color:var(--muted);line-height:2;margin:0 0 18px;font-size:14.5px}
.editorial .quote{font-family:var(--serif);font-size:20px;line-height:1.9;color:var(--ink);padding:28px 0 28px 28px;border-left:2px solid var(--accent);margin:30px 0 0}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:64px}
.stat-row div{background:var(--paper);padding:30px 26px}
.stat-row b{display:block;font-family:var(--disp);font-size:34px;line-height:1;color:var(--ink);font-weight:600}
.stat-row b i{font-style:normal;font-size:.5em;color:var(--accent);margin-left:2px}
.stat-row > div > span{display:block;margin-top:10px;font-size:12px;color:var(--muted);letter-spacing:.05em}

.spec-table{width:100%;border-collapse:collapse;margin-top:36px;font-size:13.5px}
.spec-table th,.spec-table td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line)}
.spec-table th{font-family:var(--disp);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--paper-2)}
.spec-table td:first-child{font-weight:600;color:var(--ink);width:26%}
.spec-table tr:hover td{background:rgba(255,255,255,.5)}

.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-top:40px}
.filter-tabs button{
  background:transparent;border:1px solid var(--line);color:var(--muted);
  padding:10px 20px;font-size:13px;letter-spacing:.03em;transition:.3s var(--ease);
}
.filter-tabs button:hover{border-color:var(--ink);color:var(--ink)}
.filter-tabs button.on{background:var(--ink);border-color:var(--ink);color:#fff}

.gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.gal-item{background:#fff;border:1px solid var(--line-soft);overflow:hidden;transition:.45s var(--ease)}
.gal-item:hover{transform:translateY(-4px);box-shadow:0 34px 54px -38px rgba(12,15,18,.5)}
.gal-item .ph{aspect-ratio:4/3;overflow:hidden}
.gal-item .ph img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.gal-item:hover .ph img{transform:scale(1.05)}
.gal-item figcaption{padding:16px 18px 18px;display:block}
.gal-item figcaption b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.gal-item figcaption span{display:block;margin-top:7px;font-family:var(--disp);font-size:10px;letter-spacing:.16em;color:var(--muted-2)}

.list-row{display:grid;grid-template-columns:96px 1fr auto;gap:30px;align-items:center;padding:26px 0;border-bottom:1px solid var(--line);transition:padding-left .4s var(--ease)}
.list-row:hover{padding-left:10px}
.list-row .d{font-family:var(--disp);font-size:12px;letter-spacing:.08em;color:var(--muted)}
.list-row h4{margin:0;font-size:16.5px;font-weight:600;color:var(--ink);transition:color .3s}
.list-row:hover h4{color:var(--accent)}
.list-row p{margin:6px 0 0;font-size:13px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.list-row .arrow{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:.3s}
.list-row .arrow svg{width:13px;height:13px;color:var(--muted)}
.list-row:hover .arrow{background:var(--accent);border-color:var(--accent)}
.list-row:hover .arrow svg{color:#fff}

.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:50px}
.pager a,.pager span{min-width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);font-size:13px;color:var(--muted);transition:.3s;padding:0 12px}
.pager .on{background:var(--ink);color:#fff;border-color:var(--ink)}
.pager a:hover{border-color:var(--ink);color:var(--ink)}

.contact-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:56px}
.contact-card{background:#fff;border:1px solid var(--line-soft);padding:30px 26px;transition:.4s var(--ease)}
.contact-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.contact-card svg{width:22px;height:22px;color:var(--accent);margin-bottom:18px;display:block}
.contact-card dt{font-family:var(--disp);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted-2);margin-bottom:8px}
.contact-card dl{margin:0}
.contact-card dd{margin:0;font-size:15px;color:var(--ink);font-weight:600;line-height:1.6;word-break:break-all}

.map-frame{margin-top:56px;border:1px solid var(--line);height:380px;position:relative;overflow:hidden;background:var(--paper-2);
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:44px 44px;}
.map-frame .pin{position:absolute;left:50%;top:50%;transform:translate(-50%,-100%);text-align:center}
.map-frame .pin i{display:block;width:14px;height:14px;background:var(--accent);border-radius:50%;margin:0 auto;box-shadow:0 0 0 8px rgba(180,95,50,.18)}
.map-frame .pin span{display:block;margin-top:12px;font-size:12px;color:var(--ink);background:#fff;padding:6px 12px;border:1px solid var(--line);white-space:nowrap}

/* CTA band */
.cta{background:var(--paper-2);padding:64px 0;border-top:1px solid var(--line)}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h3{margin:0;font-size:clamp(22px,2.6vw,32px);letter-spacing:-.02em;font-weight:700;color:var(--ink)}
.cta p{margin:8px 0 0;color:var(--muted);font-size:14px}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(8,10,12,.94);z-index:200;display:none;align-items:center;justify-content:center;padding:40px}
.lb.on{display:flex}
.lb img{max-width:min(1100px,92vw);max-height:86vh;object-fit:contain;background:#fff}
.lb .x{position:absolute;top:24px;right:30px;background:none;border:0;color:#fff;font-size:30px;line-height:1;opacity:.6}
.lb .x:hover{opacity:1}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:1180px){
  :root{--pad:34px}
  .nav > li > a{padding:10px 10px;font-size:13.5px}
  .nav-cta .tel{display:none}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr)}
  .proc-step:nth-child(3){border-right:0}
  .proc-step:nth-child(n+4){border-top:1px solid var(--line)}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .contact-inner{grid-template-columns:1fr;gap:48px}
  .cat-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  :root{--pad:24px}
  .sec-head{grid-template-columns:1fr;gap:26px;align-items:start}
  .sec-head .head-r{justify-self:start;max-width:none}
  .sec-head .head-r .link-more{margin-top:18px}
  .topbar .tb-l span:nth-child(n+2){display:none}
  .nav,.nav-cta{display:none}
  .burger{display:block}
  .hero{min-height:640px}
  .hero-stats .wrap{grid-template-columns:1fr 1fr}
  .hstat:nth-child(2){border-right:0}
  .hstat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08)}
  .hero-side{display:none}
  .about-split{grid-template-columns:1fr}
  .about-media{min-height:380px}
  .news-grid{grid-template-columns:1fr;gap:44px}
  .quality-grid{grid-template-columns:1fr;gap:40px}
  .editorial{grid-template-columns:1fr;gap:34px}
  .f-top{grid-template-columns:1fr 1fr;gap:36px}
  .contact-cards{grid-template-columns:1fr 1fr}
  .float-tel{display:none}
  .stat-row{grid-template-columns:1fr 1fr}
  .gal-grid{grid-template-columns:1fr 1fr}
  .list-row{grid-template-columns:80px 1fr;gap:18px}
  .list-row .arrow{display:none}
  .spec-table{font-size:12.5px}
  .spec-table th,.spec-table td{padding:12px}
  .sec{padding:76px 0}
}
@media (max-width:680px){
  .tb-r a:nth-child(3),.tb-r .sep{display:none}
  .hero-inner{padding-top:96px}
  .hero-stats .wrap{padding:0}
  .hstat{padding:18px 14px}
  .btn{padding:13px 20px;font-size:13px}
  .hero-actions{gap:10px}
  .prod-grid{grid-template-columns:1fr 1fr;gap:14px}
  .prod-body{padding:14px 14px 16px}
  .prod-body h3{font-size:14px}
  .prod-body .spec{display:none}
  .adv-grid{grid-template-columns:1fr}
  .process{grid-template-columns:1fr 1fr}
  .proc-step{border-right:0;border-bottom:1px solid var(--line);padding:24px 12px}
  .cat-grid{grid-template-columns:1fr}
  .cat-card{min-height:auto;padding:24px 22px}
  .f-grid{grid-template-columns:1fr}
  .field.full{grid-column:span 1}
  .cert-wall{grid-template-columns:1fr}
  .cert-wall .wide{grid-column:span 1}
  .gal-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .hero h1{font-size:clamp(30px,8vw,44px)}
  .hero-lead{font-size:14px}
  .hstat{padding:20px 16px}
  .about-facts{grid-template-columns:1fr}
  .f-top{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr}
  .sec-title{font-size:24px}
}

/* ==========================================================================
   WECHAT QR CARD  · 报价 / 材质证明（替代表单）
   ========================================================================== */
.qr-card{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.12);
  padding:clamp(26px,3vw,38px);
  display:flex;flex-direction:column;
}
.qr-card::before{
  content:"";position:absolute;left:-1px;top:-1px;width:56px;height:2px;background:var(--accent);
}
.qr-title{margin:14px 0 0;font-size:clamp(20px,2.1vw,26px);line-height:1.35;color:#fff;font-weight:700;letter-spacing:-.01em}
.qr-desc{margin:12px 0 0;font-size:12.5px;line-height:1.95;color:rgba(255,255,255,.5);max-width:none}

.qr-main{display:grid;grid-template-columns:176px minmax(0,1fr);gap:clamp(20px,2.4vw,30px);align-items:start;margin-top:26px}
.qr-frame{margin:0;min-width:0}
.qr-box{background:#fff;padding:10px;border:1px solid rgba(255,255,255,.22)}
.qr-box img{display:block;width:100%;max-width:100%;height:auto}
.qr-frame figcaption{margin-top:10px;font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.4);text-align:center}

.qr-steps{list-style:none;margin:0;padding:0;border-top:1px solid rgba(255,255,255,.1)}
.qr-steps li{display:grid;grid-template-columns:26px 1fr;gap:10px;align-items:baseline;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:13px;line-height:1.7;color:rgba(255,255,255,.7);letter-spacing:.01em}
.qr-steps li:last-child{border-bottom:0}
.qr-steps i{font-family:var(--disp);font-style:normal;font-size:10px;letter-spacing:.1em;color:var(--accent-2)}

.qr-rows{margin:20px 0 0;padding:0}
.qr-rows > div{display:grid;grid-template-columns:74px 1fr;gap:12px;padding:7px 0;font-size:12.5px}
.qr-rows dt{color:rgba(255,255,255,.34);font-size:11.5px;letter-spacing:.06em}
.qr-rows dd{margin:0;color:rgba(255,255,255,.8);word-break:break-all}

.qr-link{
  display:inline-flex;align-items:center;gap:7px;margin-top:16px;
  font-size:12px;color:#fff;letter-spacing:.02em;
  border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:3px;transition:.3s var(--ease);
}
.qr-link svg{width:13px;height:13px;transition:transform .3s var(--ease)}
.qr-link:hover{color:var(--accent-2);border-color:var(--accent-2)}
.qr-link:hover svg{transform:translateX(3px)}

.qr-foot{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.1)}
.qr-foot .btn{flex:none}
.qr-foot-tel small{display:block;font-family:var(--disp);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.34)}
.qr-foot-tel b{display:block;margin-top:5px;font-family:var(--disp);font-size:17px;font-weight:600;color:#fff;letter-spacing:.01em}

/* 悬浮二维码 */
.float-qr{position:relative;display:flex}
.fq-btn{
  width:52px;height:52px;padding:0;cursor:pointer;
  background:rgba(12,15,18,.9);border:1px solid rgba(255,255,255,.12);border-right:0;
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);
  transition:.3s var(--ease);
}
.fq-btn svg{width:19px;height:19px}
.float-qr:hover .fq-btn,.float-qr.open .fq-btn{background:var(--accent);color:#fff;width:58px}
.fq-pop{
  position:absolute;right:calc(100% + 14px);top:50%;
  transform:translatey(-50%) translateX(8px);
  width:188px;padding:14px 14px 13px;background:#fff;border:1px solid rgba(0,0,0,.06);
  box-shadow:0 20px 44px rgba(0,0,0,.3);text-align:center;
  opacity:0;visibility:hidden;pointer-events:none;transition:.32s var(--ease);
}
.fq-pop::after{
  content:"";position:absolute;right:-5px;top:50%;width:10px;height:10px;background:#fff;
  transform:translateY(-50%) rotate(45deg);border-right:1px solid rgba(0,0,0,.06);border-top:1px solid rgba(0,0,0,.06);
}
.fq-pop img{display:block;width:160px;height:160px;margin:0 auto}
.fq-pop b{display:block;margin-top:12px;font-size:13px;color:var(--ink);font-weight:600}
.fq-pop span{display:block;margin-top:5px;font-size:11px;color:var(--muted-2)}
.float-qr:hover .fq-pop,.float-qr.open .fq-pop{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(-50%) translateX(0)}

@media (max-width:1100px){
  .qr-main{grid-template-columns:150px minmax(0,1fr)}
}
@media (max-width:980px){
  .qr-main{grid-template-columns:minmax(0,1fr);gap:24px}
  .qr-frame{max-width:220px}
  .qr-foot{gap:16px}
}
@media (max-width:680px){
  .qr-main{grid-template-columns:minmax(0,1fr)}
  .qr-frame{max-width:none;width:100%}
  .qr-box{padding:8px}
  .qr-frame{max-width:240px}
  .qr-frame figcaption{text-align:left}
  .qr-foot{flex-direction:column;align-items:stretch;gap:14px}
  .qr-foot .btn{justify-content:center}
  .qr-foot-tel{display:flex;align-items:baseline;gap:10px}
  .qr-foot-tel b{font-size:16px;margin-top:0}
}