:root{
  --red:#D83A2E;
  --red-deep:#B7281D;
  --red-tint:#FBEAE8;
  --bg:#F5F3F3;
  --ink:#212528;
  --muted:#6B7276;
  --soft:#9AA1A4;
  --line:#E5E2E0;
  --card:#FFFFFF;
  --dark:#22262A;
  --dark-2:#2C3237;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --serif:"Songti SC","SimSun","Noto Serif SC",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.95;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1180px,92%);margin:0 auto}
.sec{padding:96px 0}

/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:50;background:rgba(245,243,243,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px}
.logo .mark{width:40px;height:40px;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;letter-spacing:0;border-radius:3px}
.logo .txt b{display:block;font-size:16px;line-height:1.3}
.logo .txt span{display:block;font-size:10px;color:var(--soft);letter-spacing:2px;font-family:Arial}
nav.main{display:flex;align-items:center;gap:34px}
nav.main a{font-size:15px;color:var(--muted);position:relative;padding:6px 0}
nav.main a:hover{color:var(--ink)}
nav.main a.on{color:var(--red);font-weight:600}
nav.main a.on::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--red)}
.hd-tel{background:var(--red);color:#fff;padding:10px 20px;border-radius:3px;font-size:14px;font-weight:600;white-space:nowrap}
.hd-tel:hover{background:var(--red-deep)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:4px;padding:8px 10px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0}

/* ---------- hero ---------- */
.hero{padding:110px 0 90px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-140px;top:-60px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,var(--red-tint) 0%,rgba(251,234,232,0) 68%)}
.hero .kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--red);font-weight:600;letter-spacing:1px;margin-bottom:22px}
.hero .kicker::before{content:"";width:26px;height:2px;background:var(--red)}
.hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.32;font-weight:800;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .sub{margin:26px 0 38px;color:var(--muted);font-size:17px;max-width:640px}
.hero .en{font-family:Arial;color:var(--soft);font-size:12.5px;letter-spacing:1.5px;margin-top:-16px;margin-bottom:30px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 30px;border-radius:3px;font-size:15px;font-weight:600;transition:.2s}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-deep)}
.btn-ghost{border:1px solid #C9C5C2;color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--red);color:var(--red)}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:6px}
.hero-stats .cell{padding:28px 30px;border-right:1px solid var(--line)}
.hero-stats .cell:last-child{border-right:0}
.hero-stats b{display:block;font-size:30px;color:var(--red);font-family:Arial;font-weight:700;line-height:1.2}
.hero-stats span{font-size:13px;color:var(--muted)}

/* ---------- section head ---------- */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:58px}
.sec-head .no{font-family:Arial;font-size:13px;color:var(--red);font-weight:700;letter-spacing:2px;display:block;margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.35}
.sec-head .sub{color:var(--muted);font-size:15px;margin-top:12px;max-width:600px}
.sec-head .more{font-size:13.5px;color:var(--red);white-space:nowrap;font-weight:600}
.dark-sec{background:var(--dark);color:#E8E6E3}
.dark-sec .sec-head h2{color:#fff}
.dark-sec .sec-head .sub{color:#9AA1A4}
.dark-sec .sec-head .no{color:#F0776C}

/* ---------- cards ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:36px 32px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(33,37,40,.09)}
.card .ic{width:46px;height:46px;border-radius:6px;background:var(--red-tint);color:var(--red);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.card h3{font-size:19px;margin-bottom:6px;font-weight:700}
.card .en{font-size:11px;color:var(--soft);font-family:Arial;letter-spacing:1px;margin-bottom:14px}
.card p{font-size:14px;color:var(--muted)}
.card .tags{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px}
.card .tag{font-size:12px;background:var(--bg);border:1px solid var(--line);border-radius:3px;padding:3px 10px;color:var(--muted)}
.card .tag.hot{background:var(--red-tint);border-color:#F2C7C2;color:var(--red)}

/* ---------- equipment list ---------- */
.eq{display:grid;grid-template-columns:1fr 1fr;gap:0 64px}
.eq .item{display:flex;gap:18px;padding:26px 0;border-bottom:1px solid var(--line)}
.eq .item b{font-size:16.5px;display:block}
.eq .item .en{font-size:11px;color:var(--soft);font-family:Arial;letter-spacing:.5px}
.eq .item p{font-size:13.5px;color:var(--muted);margin-top:6px}
.eq .no{font-family:Arial;color:var(--red);font-weight:700;font-size:15px;min-width:34px;padding-top:3px}

/* ---------- industry map ---------- */
.region{margin-bottom:44px}
.region h3{font-size:18px;font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.region h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--red)}
.region .reg-en{font-size:11px;color:var(--soft);font-family:Arial;letter-spacing:1px;margin-bottom:16px}
.mill-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.mill{background:var(--dark-2);border:1px solid #3A4147;border-radius:5px;padding:20px 22px}
.mill b{display:block;font-size:15.5px;color:#fff}
.mill span{display:block;font-size:11px;color:#8E979C;font-family:Arial;margin:2px 0 8px}
.mill p{font-size:12.5px;color:#A9B0B4;line-height:1.8}

/* ---------- spec table ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.tbl th{background:var(--dark);color:#fff;font-size:13.5px;font-weight:600;padding:14px 16px;text-align:left;letter-spacing:.5px}
.tbl td{padding:14px 16px;font-size:14px;border-bottom:1px solid var(--line);color:var(--ink)}
.tbl tr:last-child td{border-bottom:0}
.tbl td.num{font-family:Arial}
.tbl .hl{color:var(--red);font-weight:700}
.tbl-note{font-size:12.5px;color:var(--soft);margin-top:12px}

/* ---------- compare ---------- */
.cmp{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cmp .c{background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px 24px;position:relative}
.cmp .c.main{border:2px solid var(--red);background:var(--red-tint)}
.cmp .c .std{font-size:11px;color:var(--soft);font-family:Arial;letter-spacing:1px}
.cmp .c b{display:block;font-size:22px;margin:8px 0 4px;font-family:Arial}
.cmp .c .name{font-size:14px;font-weight:600}
.cmp .c p{font-size:12.5px;color:var(--muted);margin-top:10px}
.cmp .badge{position:absolute;top:-12px;left:20px;background:var(--red);color:#fff;font-size:11px;padding:3px 12px;border-radius:2px;letter-spacing:1px}

/* ---------- supply ---------- */
.sup-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--line);border-radius:6px;background:#fff;overflow:hidden}
.kv .k{padding:22px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.kv .k:nth-child(2n){border-right:0}
.kv .k:nth-last-child(-n+2){border-bottom:0}
.kv b{display:block;font-size:24px;color:var(--red);font-family:Arial}
.kv span{font-size:12.5px;color:var(--muted)}
.process{counter-reset:st}
.process .st{position:relative;padding:0 0 34px 64px}
.process .st::before{counter-increment:st;content:"0" counter(st);position:absolute;left:0;top:-4px;width:44px;height:44px;border-radius:50%;background:#fff;border:2px solid var(--red);color:var(--red);font-family:Arial;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.process .st::after{content:"";position:absolute;left:21px;top:46px;bottom:6px;width:2px;background:var(--line)}
.process .st:last-child::after{display:none}
.process .st b{font-size:16.5px;display:block}
.process .st p{font-size:13.5px;color:var(--muted);margin-top:4px}

/* ---------- faq ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:14px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:20px 26px;font-weight:600;font-size:15.5px;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:Arial;color:var(--red);font-size:20px;font-weight:400}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 26px 22px;font-size:14px;color:var(--muted)}

/* ---------- CTA / contact bar ---------- */
.cta{background:linear-gradient(120deg,var(--red) 0%,var(--red-deep) 100%);color:#fff;text-align:center;padding:84px 0}
.cta h2{font-size:clamp(26px,3vw,38px);font-weight:800;margin-bottom:14px}
.cta p{color:rgba(255,255,255,.85);font-size:15.5px;max-width:560px;margin:0 auto 34px}
.cta .btn{background:#fff;color:var(--red)}
.cta .btn:hover{background:#FBEAE8}
.tel-big{display:block;margin-top:22px;font-family:Arial;font-size:22px;letter-spacing:2px;font-weight:700}
.contact-strip{background:var(--dark);color:#fff;text-align:center;padding:20px 16px;font-size:15px;letter-spacing:.5px}
.contact-strip b{color:#FF8A7E;font-family:Arial;font-size:17px;letter-spacing:1px}

/* ---------- keywords ---------- */
.kw{padding:44px 0 56px;border-top:1px solid var(--line)}
.kw .lab{font-size:12px;color:var(--soft);letter-spacing:2px;margin-bottom:16px;font-family:Arial}
.kw .list{display:flex;flex-wrap:wrap;gap:12px}
.kw a{background:#fff;border:1px solid var(--line);border-radius:20px;padding:7px 18px;font-size:13.5px;color:var(--muted);transition:.2s}
.kw a:hover{border-color:var(--red);color:var(--red);background:var(--red-tint)}

/* ---------- footer ---------- */
footer{background:var(--dark);color:#9AA1A4;padding:64px 0 0}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding-bottom:48px}
.ft-grid h4{color:#fff;font-size:14.5px;margin-bottom:18px}
.ft-grid a{display:block;font-size:13.5px;margin-bottom:10px}
.ft-grid a:hover{color:#fff}
.ft-grid p{font-size:13px;line-height:1.9}
.ft-brand .logo{margin-bottom:16px}
.ft-brand .logo .mark{width:34px;height:34px;font-size:10px}
.ft-bottom{border-top:1px solid #3A4147;padding:20px 0;font-size:12px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- page hero (inner pages) ---------- */
.page-hero{padding:74px 0 58px;background:#fff;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(28px,3.4vw,42px);font-weight:800}
.page-hero .en{font-family:Arial;font-size:12px;color:var(--soft);letter-spacing:2px;margin-top:8px}
.page-hero .desc{color:var(--muted);margin-top:18px;max-width:720px;font-size:15.5px}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-4,.cmp{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .mill-list{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats .cell:nth-child(2n){border-right:0}
  .hero-stats .cell:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .sup-grid{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  nav.main{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:20px 5%;gap:16px}
  nav.main.open{display:flex}
  .burger{display:block}
  .hd-tel{display:none}
  .hero{padding:64px 0 64px}
  .sec{padding:64px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:38px}
  .grid-2,.grid-3,.grid-4,.eq,.cmp,.mill-list{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .card{padding:28px 24px}
  .ft-grid{grid-template-columns:1fr;gap:30px}
  .eq{gap:0}
  .kv .k{padding:16px 18px}
}