/* ============================================================
   德州沥兴晟筑路设备有限公司 · 站点样式
   ============================================================ */

:root{
  --ink:#07090C;
  --bg:#0A0D11;
  --panel:#101419;
  --panel-2:#151A20;
  --panel-3:#1A2027;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#E9ECF0;
  --muted:#98A2AE;
  --dim:#69737F;
  --brand:#FF6A1F;
  --brand-deep:#D9500E;
  --brand-soft:rgba(255,106,31,.12);
  --amber:#FFC53D;
  --blue:#4C8DFF;
  --teal:#25C2A0;
  --max:1260px;
  --r:16px;
  --r-sm:10px;
  --shadow:0 30px 80px -30px rgba(0,0,0,.85);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.22;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--brand);color:#fff}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 28px}
@media(max-width:640px){.wrap{padding:0 18px}}

/* ---------- 通用元素 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}
.eyebrow.center{justify-content:center}
.eyebrow.light{color:var(--amber)}

.section{padding:104px 0;position:relative}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:52px}
.section-head h2{font-size:clamp(26px,3.3vw,42px);margin:18px 0 16px}
.section-head p{color:var(--muted);font-size:16.5px;line-height:1.85}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .35s var(--ease),background .3s,color .3s,border-color .3s,box-shadow .35s;
  will-change:transform;
}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{background:var(--brand);color:#120801;box-shadow:0 12px 30px -12px rgba(255,106,31,.8)}
.btn-primary:hover{background:#FF8142;transform:translateY(-2px);box-shadow:0 18px 40px -14px rgba(255,106,31,.9)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 18px;font-size:13.5px}

.chip{
  display:inline-block;padding:5px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);
  font-size:12px;letter-spacing:.04em;line-height:1.5;
  background:rgba(255,255,255,.02);
}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:80;
  transition:background .4s,border-color .4s,backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(8,10,13,.82);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;gap:34px;height:78px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand svg{width:38px;height:38px;flex:none}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:.14em}
.brand-en{font-size:8.5px;letter-spacing:.28em;color:var(--dim);margin-top:4px}
.brand-official{font-style:normal;font-size:9px;letter-spacing:.18em;color:#FFB37A;margin-left:8px;padding-left:8px;border-left:1px solid rgba(255,255,255,.22)}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  padding:9px 14px;border-radius:8px;font-size:14.5px;color:#C8CFD8;
  transition:color .25s,background .25s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:var(--brand)}
.nav-tel{
  display:inline-flex;align-items:center;gap:9px;margin-left:12px;
  padding:10px 18px;border-radius:999px;
  background:var(--brand);color:#160900;font-weight:700;font-size:14.5px;
  letter-spacing:.04em;transition:transform .3s var(--ease),background .3s;
}
.nav-tel:hover{background:#FF8142;transform:translateY(-1px)}
.nav-tel svg{width:15px;height:15px}

.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;position:relative}
.nav-toggle span{
  position:absolute;left:11px;width:22px;height:1.5px;background:#fff;
  transition:transform .35s var(--ease),opacity .25s;
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){top:23px}
.nav-toggle span:nth-child(3){top:29px}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer{
  position:fixed;inset:78px 0 auto 0;z-index:79;
  background:rgba(8,10,13,.97);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line);
  padding:14px 22px 26px;display:none;
}
body.nav-open .drawer{display:block;animation:drawerIn .35s var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.drawer a{display:block;padding:14px 6px;font-size:17px;border-bottom:1px solid var(--line)}
.drawer a:last-of-type{border-bottom:0}
.drawer .btn{width:100%;margin-top:16px}

@media(max-width:1020px){
  .nav-links,.nav-tel{display:none}
  .nav-toggle{display:block}
  .nav{height:70px}
  .drawer{inset:70px 0 auto 0}
}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;min-height:min(100vh,900px);min-height:min(100svh,900px);display:flex;align-items:flex-end;
  padding:150px 0 76px;overflow:hidden;isolation:isolate;
}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%;
  animation:heroZoom 22s ease-out forwards}
@keyframes heroZoom{from{transform:scale(1.09)}to{transform:scale(1)}}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg,rgba(7,9,12,.86) 0%,rgba(7,9,12,.30) 36%,rgba(7,9,12,.70) 76%,var(--bg) 100%),
    linear-gradient(90deg,rgba(7,9,12,.95) 0%,rgba(7,9,12,.86) 32%,rgba(7,9,12,.58) 52%,rgba(7,9,12,.18) 74%,rgba(7,9,12,0) 90%);
}
.hero-inner{width:100%}
.hero .eyebrow{color:#FFB27A;text-shadow:0 1px 16px rgba(0,0,0,.7)}
.hero .eyebrow::before{background:#FF8A3D;opacity:.95;height:2px}
.hero h1{
  font-size:clamp(34px,5.4vw,68px);font-weight:700;line-height:1.14;
  letter-spacing:-.02em;margin:22px 0 24px;max-width:15em;
}
.hero h1 em{font-style:normal;color:var(--brand);position:relative}
.hero-lede{max-width:640px;color:#DCE2E9;font-size:17px;line-height:1.92;text-shadow:0 1px 3px rgba(0,0,0,.55),0 2px 22px rgba(0,0,0,.75)}
@media(max-width:640px){.hero-lede{font-size:15.5px;line-height:1.8;max-width:100%}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:36px 62px;margin-top:64px;
  padding-top:30px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-meta div{min-width:96px}
.hero-meta b{display:block;font-size:clamp(26px,2.6vw,34px);color:#fff;font-weight:700;letter-spacing:-.01em}
.hero-meta b span{font-size:15px;color:var(--brand);margin-left:3px;font-weight:600}
.hero-meta i{font-style:normal;font-size:12.5px;color:#9AA4B0;letter-spacing:.12em;text-transform:uppercase}

.scroll-hint{
  position:absolute;right:34px;bottom:76px;display:flex;align-items:center;gap:12px;
  writing-mode:vertical-rl;font-size:11px;letter-spacing:.3em;color:#8C97A4;
}
.scroll-hint::after{content:"";width:1px;height:52px;background:linear-gradient(var(--brand),transparent)}
@media(max-width:1020px){.scroll-hint{display:none}}

/* ---------- 页面横幅（内页） ---------- */
.page-hero{
  position:relative;padding:160px 0 64px;overflow:hidden;border-bottom:1px solid var(--line);
}
.page-hero-bg{position:absolute;inset:0;z-index:-2}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.92;object-position:center 45%;filter:saturate(1.05) brightness(1.04)}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(100deg,rgba(7,9,12,.95) 0%,rgba(7,9,12,.88) 34%,rgba(7,9,12,.52) 62%,rgba(7,9,12,.20) 100%),
    linear-gradient(180deg,rgba(7,9,12,.70) 0%,rgba(7,9,12,.10) 34%,rgba(7,9,12,.55) 74%,var(--bg) 100%);
}
.page-hero h1{font-size:clamp(30px,4.4vw,54px);margin:18px 0 18px;letter-spacing:-.02em}
.page-hero p{max-width:680px;color:var(--muted);font-size:16.5px}
.crumb{display:flex;gap:10px;align-items:center;font-size:12.5px;color:var(--dim);margin-bottom:8px}
.crumb a:hover{color:var(--brand)}
.crumb span{opacity:.5}

/* ---------- 三大板块 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{
  position:relative;display:block;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);
  min-height:396px;isolation:isolate;
  transition:transform .5s var(--ease),border-color .4s,box-shadow .5s;
}
.cat-card:hover{transform:translateY(-6px);border-color:rgba(255,106,31,.45);box-shadow:var(--shadow)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;
  transition:transform 1.1s var(--ease),filter .5s;filter:grayscale(.25) brightness(.92)}
.cat-card:hover img{transform:scale(1.06);filter:grayscale(0) brightness(1)}
.cat-card::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(8,11,14,.28) 0%,rgba(8,11,14,.62) 34%,rgba(8,11,14,.88) 58%,rgba(8,11,14,.97) 100%);
}
.cat-body{position:absolute;inset:auto 0 0 0;padding:26px 26px 28px}
.cat-no{font-size:11.5px;letter-spacing:.24em;color:var(--brand);font-weight:700;text-shadow:0 1px 12px rgba(0,0,0,.8)}
.cat-body h3{font-size:25px;margin:12px 0 10px;letter-spacing:.02em;text-shadow:0 1px 16px rgba(0,0,0,.75)}
.cat-body p{font-size:14px;color:#B7C0CB;line-height:1.75;min-height:3.4em}
.cat-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);
}
.cat-foot span{font-size:12.5px;color:#8E99A6;letter-spacing:.06em}
.cat-arrow{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.25);
  display:grid;place-items:center;transition:background .35s,border-color .35s,transform .35s;
}
.cat-arrow svg{width:15px;height:15px}
.cat-card:hover .cat-arrow{background:var(--brand);border-color:var(--brand);color:#160900;transform:rotate(-45deg)}
@media(max-width:960px){.cat-grid{grid-template-columns:1fr}.cat-card{min-height:330px}}

/* ---------- 数据带 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{background:var(--panel);padding:34px 26px;transition:background .35s}
.stat:hover{background:var(--panel-2)}
.stat b{display:block;font-size:clamp(28px,3vw,40px);font-weight:700;letter-spacing:-.02em;color:#fff}
.stat b span{font-size:16px;color:var(--brand);margin-left:2px}
.stat i{font-style:normal;display:block;margin-top:8px;font-size:12.5px;color:var(--dim);letter-spacing:.1em}
@media(max-width:860px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- 精选产品（首页） ---------- */
.showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.show-card{
  position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);aspect-ratio:4/3.1;isolation:isolate;
  transition:transform .5s var(--ease),border-color .4s;
}
.show-card:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.24)}
.show-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;
  transition:transform 1.1s var(--ease),filter .5s;filter:brightness(.86)}
.show-card:hover img{transform:scale(1.05);filter:brightness(1)}
.show-card::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(8,11,14,0) 30%,rgba(8,11,14,.86) 100%)}
.show-body{position:absolute;inset:auto 0 0 0;padding:22px}
.show-body h4{font-size:18.5px}
.show-body p{font-size:13px;color:#A9B3BF;margin-top:7px;line-height:1.65}
.show-tag{position:absolute;top:16px;left:16px;padding:5px 11px;border-radius:999px;
  background:rgba(8,11,14,.72);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.16);
  font-size:11.5px;letter-spacing:.08em;color:#DCE3EA}
@media(max-width:960px){.showcase{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.showcase{grid-template-columns:1fr}}

/* ---------- 双栏展示 ---------- */
.split{display:grid;grid-template-columns:1.06fr 1fr;gap:56px;align-items:center}
.split.rev{grid-template-columns:1fr 1.06fr}
.split-media{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.split-media img{width:100%;aspect-ratio:4/3.2;object-fit:cover}
.split-media .badge{
  position:absolute;left:18px;bottom:18px;padding:9px 15px;border-radius:999px;
  background:rgba(8,11,14,.78);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.18);
  font-size:12.5px;letter-spacing:.06em;
}
.split h2{font-size:clamp(25px,3vw,38px);margin:16px 0 18px}
.split p{color:var(--muted);font-size:16px;line-height:1.9}
.feature-list{margin-top:26px;display:grid;gap:14px}
.feature-list li{display:flex;gap:13px;font-size:14.5px;color:#CFD6DE;line-height:1.7}
.feature-list li svg{width:19px;height:19px;flex:none;margin-top:4px;color:var(--brand)}
@media(max-width:900px){.split,.split.rev{grid-template-columns:1fr;gap:32px}}

/* ---------- 产品网格 + 卡片 ---------- */
.p-toolbar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-bottom:34px;padding-bottom:22px;border-bottom:1px solid var(--line);
}
.p-toolbar .count{color:var(--dim);font-size:13px;margin-left:auto}
.filter{
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:13.5px;color:#B9C2CD;transition:all .3s;
}
.filter:hover{border-color:var(--line-strong);color:#fff}
.filter.active{background:var(--brand);border-color:var(--brand);color:#160900;font-weight:600}

.p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.p-card{
  display:flex;flex-direction:column;text-align:left;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;transition:transform .45s var(--ease),border-color .35s,box-shadow .45s;
}
.p-card:hover{transform:translateY(-5px);border-color:rgba(255,106,31,.4);box-shadow:var(--shadow)}
.p-thumb{position:relative;aspect-ratio:16/10.5;overflow:hidden;background:var(--panel-3)}
.p-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.p-card:hover .p-thumb img{transform:scale(1.05)}
.p-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(8,11,14,.55))}
.p-no{
  position:absolute;left:14px;top:12px;z-index:2;font-size:11px;letter-spacing:.16em;
  color:#E8EDF3;padding:3px 9px;border-radius:6px;background:rgba(8,11,14,.62);
  border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px);
}
.p-thumb .p-glyph{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:
    radial-gradient(120% 90% at 50% -10%,rgba(255,106,31,.10),transparent 62%),
    linear-gradient(180deg,#131920,#0B0F14);
}
.p-thumb .p-glyph::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:36px 36px;
  -webkit-mask-image:radial-gradient(72% 72% at 50% 46%,#000 20%,transparent 78%);
  mask-image:radial-gradient(72% 72% at 50% 46%,#000 20%,transparent 78%);
}
.pg-ico{
  position:relative;width:78px;height:78px;border-radius:50%;display:grid;place-items:center;
  color:rgba(255,158,96,.78);border:1px solid rgba(255,255,255,.12);
  background:radial-gradient(circle at 50% 26%,rgba(255,106,31,.16),rgba(255,106,31,0) 68%);
}
.pg-ico svg{width:42px;height:42px}
.pg-txt{
  position:relative;font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(255,255,255,.56);font-size:11.5px;letter-spacing:.1em;text-align:center;padding:0 22px;line-height:1.65;
}
.p-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.p-body h3{font-size:17.5px;line-height:1.4}
.p-body p{font-size:13.2px;color:var(--muted);line-height:1.7;margin-top:8px;flex:1}
.p-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.p-more{
  display:inline-flex;align-items:center;gap:7px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);font-size:13px;color:var(--brand);font-weight:600;
  letter-spacing:.02em;
}
.p-more svg{width:14px;height:14px;transition:transform .35s}
.p-card:hover .p-more svg{transform:translateX(4px)}
@media(max-width:1000px){.p-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.p-grid{grid-template-columns:1fr}}

/* ---------- 产品详情弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:120;display:none;
  padding:5vh 20px;overflow-y:auto;
}
.modal.open{display:block}
.modal-back{position:fixed;inset:0;background:rgba(4,6,8,.78);backdrop-filter:blur(10px);animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-panel{
  position:relative;max-width:1000px;margin:0 auto;background:var(--panel);
  border:1px solid var(--line-strong);border-radius:20px;overflow:hidden;
  box-shadow:0 50px 120px -40px #000;animation:popIn .45s var(--ease);
}
@keyframes popIn{from{opacity:0;transform:translateY(22px) scale(.985)}to{opacity:1;transform:none}}
.modal-hero{position:relative;aspect-ratio:16/7.2;background:var(--panel-3)}
.modal-hero img{width:100%;height:100%;object-fit:cover}
.modal-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,11,14,.25),rgba(16,20,25,.98))}
.modal-close{
  position:absolute;right:16px;top:16px;z-index:3;width:40px;height:40px;border-radius:50%;
  background:rgba(8,11,14,.7);border:1px solid rgba(255,255,255,.2);display:grid;place-items:center;
  transition:background .3s,transform .3s;
}
.modal-close:hover{background:var(--brand);color:#160900;transform:rotate(90deg)}
.modal-close svg{width:16px;height:16px}
.modal-head{position:absolute;left:0;right:0;bottom:0;padding:0 34px 24px;z-index:2}
.modal-head h2{font-size:clamp(22px,3vw,32px);margin:10px 0 8px}
.modal-head .p-tags{margin-top:0}
.modal-content{padding:30px 34px 40px}
.modal-content .lead{color:#C3CBD5;font-size:15.5px;line-height:1.9}
.modal-block{margin-top:28px}
.modal-block h4{
  font-size:12.5px;letter-spacing:.18em;color:var(--brand);text-transform:uppercase;
  margin-bottom:14px;font-weight:700;
}
.modal-feats{display:grid;grid-template-columns:1fr 1fr;gap:10px 26px}
.modal-feats li{display:flex;gap:10px;font-size:14px;color:#CBD3DC;line-height:1.7}
.modal-feats li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);flex:none;margin-top:9px}
.spec-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table.spec{width:100%;border-collapse:collapse;font-size:13px;min-width:560px}
table.spec th,table.spec td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
table.spec thead th{background:var(--panel-2);color:#AEB8C3;font-weight:600;font-size:12px;letter-spacing:.06em;white-space:nowrap}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody tr:nth-child(even){background:rgba(255,255,255,.017)}
table.spec td:first-child{color:#DDE3EA}
table.spec td{color:var(--muted)}
.modal-note{margin-top:20px;padding:14px 16px;border-left:2px solid var(--brand);
  background:var(--brand-soft);border-radius:0 8px 8px 0;font-size:13.5px;color:#D8DFE7}
.modal-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
@media(max-width:700px){
  .modal{padding:0}
  .modal-panel{border-radius:0;min-height:100%}
  .modal-hero{aspect-ratio:16/10}
  .modal-head{padding:0 20px 20px}
  .modal-content{padding:24px 20px 34px}
  .modal-feats{grid-template-columns:1fr}
}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.case-grid a{
  position:relative;border-radius:var(--r-sm);overflow:hidden;display:block;
  aspect-ratio:4/3.4;border:1px solid var(--line);
}
.case-grid a img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease),filter .4s;filter:brightness(.9)}
.case-grid a:hover img{transform:scale(1.07);filter:brightness(1)}
.case-grid a span{
  position:absolute;left:0;right:0;bottom:0;padding:22px 14px 12px;
  font-size:12.5px;color:#E4EAF0;letter-spacing:.05em;
  background:linear-gradient(180deg,transparent,rgba(8,11,14,.9));
}
.case-grid a:nth-child(1){grid-column:span 2;grid-row:span 2;aspect-ratio:auto}
@media(max-width:900px){.case-grid{grid-template-columns:repeat(2,1fr)}.case-grid a:nth-child(1){grid-column:span 2;grid-row:auto;aspect-ratio:16/9}}

/* ---------- 服务/优势 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{
  padding:30px 24px;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(180deg,var(--panel),rgba(16,20,25,.4));
  transition:border-color .35s,transform .4s var(--ease);
}
.feat:hover{border-color:rgba(255,106,31,.38);transform:translateY(-4px)}
.feat-ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:18px}
.feat-ico svg{width:22px;height:22px}
.feat h4{font-size:16.5px;margin-bottom:9px}
.feat p{font-size:13.5px;color:var(--muted);line-height:1.8}
@media(max-width:1000px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid-4{grid-template-columns:1fr}}

/* ---------- 清单表 ---------- */
.list-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:0 46px}
.list-item{
  display:flex;align-items:baseline;gap:12px;padding:15px 0;
  border-bottom:1px solid var(--line);font-size:14.5px;color:#CFD7DF;
  transition:color .3s,padding-left .3s;
}
.list-item:hover{color:var(--brand);padding-left:6px}
.list-item i{font-style:normal;font-size:11px;color:var(--dim);letter-spacing:.1em;min-width:20px}
@media(max-width:900px){.list-cols{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.list-cols{grid-template-columns:1fr}}

/* ---------- CTA ---------- */
.cta{
  position:relative;border-radius:22px;overflow:hidden;isolation:isolate;
  padding:66px 56px;border:1px solid var(--line);
}
.cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;filter:brightness(.72) saturate(1.05)}
.cta::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(8,11,14,.94) 10%,rgba(8,11,14,.6) 56%,rgba(8,11,14,.26))}
.cta h2{font-size:clamp(24px,3.2vw,40px);max-width:17em;line-height:1.28}
.nb{white-space:nowrap}
.cta p{color:#B6C0CB;margin-top:16px;max-width:44em;font-size:15.5px}
.cta .hero-actions{margin-top:32px}
@media(max-width:640px){.cta{padding:40px 24px}}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.contact-card{
  padding:34px 30px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);position:relative;overflow:hidden;
}
.contact-card .ico{width:44px;height:44px;border-radius:11px;background:var(--brand-soft);
  color:var(--brand);display:grid;place-items:center;margin-bottom:18px}
.contact-card .ico svg{width:21px;height:21px}
.contact-card h4{font-size:13px;letter-spacing:.16em;color:var(--dim);font-weight:600;margin-bottom:12px}
.contact-card .big{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:.01em;color:#fff;line-height:1.3}
.contact-card .mail{display:block;font-size:clamp(16px,1.55vw,21px);font-weight:700;letter-spacing:.01em;color:#fff;line-height:1.35;word-break:break-all;transition:color .25s}
.contact-card .mail:hover{color:var(--brand)}
.contact-card p{color:var(--muted);font-size:14px;margin-top:10px;line-height:1.8}
.tel-link:hover{color:var(--brand)}
@media(max-width:800px){.contact-grid{grid-template-columns:1fr}}

.info-list{margin-top:8px}
.info-row{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.info-row b{flex:none;width:92px;color:var(--dim);font-weight:500;font-size:13px;letter-spacing:.06em}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:#070A0D;padding:64px 0 30px;margin-top:0}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand p{color:var(--dim);font-size:13.5px;line-height:1.85;max-width:30em}
.foot-col h5{font-size:12px;letter-spacing:.18em;color:#8B95A2;font-weight:600;margin:0 0 16px}
.foot-col a{display:block;padding:7px 0;font-size:13.5px;color:#B4BDC7;transition:color .25s}
.foot-col a:hover{color:var(--brand)}
.foot-tel{margin-top:14px;font-size:19px;font-weight:700;color:#fff;letter-spacing:.02em}
.foot-mail{margin-top:6px;font-size:13.5px;color:var(--dim)}
.foot-mail a{color:#B4BDC7;transition:color .25s}
.foot-mail a:hover{color:var(--brand)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--dim);
}
@media(max-width:900px){.foot-top{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:560px){.foot-top{grid-template-columns:1fr}}

/* 悬浮电话（移动端） */
.float-tel{
  display:none;position:fixed;left:16px;right:16px;bottom:16px;z-index:70;
  height:52px;border-radius:999px;background:var(--brand);color:#160900;
  align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:15px;
  box-shadow:0 16px 40px -14px rgba(255,106,31,.9);
}
.float-tel svg{width:17px;height:17px}
@media(max-width:1020px){.float-tel{display:flex}}
@media(max-width:1020px){.site-footer{padding-bottom:96px}}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-bg img{animation:none}
  html{scroll-behavior:auto}
}