@charset "utf-8";
/* ==========================================================================
   莜歌铝业 · 全站视觉（PC 首页）
   资源路径：/static/eztyp/images/
   ========================================================================== */

:root{
  --bg:#0A0C0E; --bg2:#12161A; --card:#171C21; --card2:#1D232A;
  --gold:#C9A961; --gold-l:#E7D3A1; --gold-d:#8F7538;
  --ink:#EDE9E3; --muted:#9C958C; --muted2:#6E6A63;
  --line:rgba(201,169,97,.18); --line2:rgba(255,255,255,.07);
  --container:1280px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:15px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--container);margin:0 auto;padding:0 32px}
.serif{font-family:Georgia,"Times New Roman",serif;letter-spacing:.16em}

/* ============ Header ============ */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:84px;transition:all .35s ease;
  background:linear-gradient(to bottom,rgba(10,12,14,.72),rgba(10,12,14,0));}
.header.solid{background:rgba(10,12,14,.93);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);height:72px}
.header .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:40px}
.brand{display:flex;align-items:center;gap:14px}
.brand .mark{width:44px;height:44px;border:1px solid var(--gold);border-radius:2px;display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--gold-l);font-weight:500;background:linear-gradient(145deg,rgba(201,169,97,.16),rgba(201,169,97,.03))}
.brand .name{font-size:20px;letter-spacing:.14em;color:var(--ink)}
.brand .sub{font-size:9px;letter-spacing:.34em;color:var(--gold);text-transform:uppercase;margin-top:1px}
.brand .plate{background:#fff;padding:7px 13px;border-radius:3px;display:flex;align-items:center;box-shadow:0 6px 20px rgba(0,0,0,.35)}
.brand .plate img{height:32px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:4px}
.nav>li{list-style:none;position:relative}
.nav>li>a{display:block;padding:10px 16px;font-size:15px;color:var(--ink);letter-spacing:.06em;transition:color .2s}
.nav>li>a:hover,.nav>li.cur>a{color:var(--gold-l)}
.nav>li>a::after{content:"";display:block;height:1px;width:0;background:var(--gold);transition:width .28s;margin-top:6px}
.nav>li:hover>a::after{width:100%}
.drop{position:absolute;top:100%;left:0;min-width:186px;padding:10px;background:rgba(18,22,26,.98);
  border:1px solid var(--line);backdrop-filter:blur(12px);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .26s;border-radius:2px}
.nav>li:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:block;padding:9px 14px;font-size:14px;color:var(--muted);border-radius:2px}
.drop a:hover{color:var(--gold-l);background:rgba(201,169,97,.08)}
.hright{display:flex;align-items:center;gap:22px}
.hphone{text-align:right;line-height:1.3}
.hphone small{display:block;font-size:11px;color:var(--muted);letter-spacing:.1em}
.hphone b{font-size:17px;color:var(--gold-l);letter-spacing:.04em;font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 26px;border-radius:2px;
  font-size:14px;letter-spacing:.1em;transition:all .25s;cursor:pointer;border:1px solid transparent}
.btn-gold{background:linear-gradient(135deg,var(--gold-l),var(--gold));color:#16120A;font-weight:600}
.btn-gold:hover{filter:brightness(1.1);box-shadow:0 10px 26px rgba(201,169,97,.28)}
.btn-line{border-color:rgba(231,211,161,.4);color:var(--gold-l)}
.btn-line:hover{background:rgba(201,169,97,.12)}

/* ============ Hero ============ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero .bg{position:absolute;inset:0;background:url("../images/hero-main.jpg") center/cover no-repeat;transform:scale(1.04)}
.hero .ov{position:absolute;inset:0;background:
  linear-gradient(100deg,rgba(8,10,12,.88) 0%,rgba(8,10,12,.54) 46%,rgba(8,10,12,.10) 100%),
  linear-gradient(to top,rgba(10,12,14,.96) 0%,rgba(10,12,14,0) 30%)}
.hero .wrap{position:relative;z-index:2;padding-top:96px;padding-bottom:120px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.3em;color:var(--gold);
  text-transform:uppercase;margin-bottom:26px}
.hero .eyebrow::before{content:"";width:46px;height:1px;background:var(--gold)}
.hero h1{font-size:58px;line-height:1.24;letter-spacing:.02em;font-weight:600;max-width:760px;}
.hero h1 em{font-style:normal;color:var(--gold-l);display:block;font-size:25px;letter-spacing:.18em;font-weight:400;margin-top:18px}
.hero p.lead{margin-top:26px;max-width:560px;font-size:16px;color:#C9C4BC;line-height:2}
.hero .tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.hero .tags span{border:1px solid var(--line);padding:6px 16px;font-size:13px;color:var(--gold-l);letter-spacing:.08em;border-radius:2px;
  background:rgba(201,169,97,.05)}
.hero .acts{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}
.hero .price{position:absolute;right:32px;bottom:150px;z-index:2;text-align:right}
.hero .price b{font-size:52px;color:var(--gold-l);font-weight:600;line-height:1}
.hero .price b i{font-size:20px;font-style:normal;color:var(--gold)}
.hero .price small{display:block;font-size:12px;letter-spacing:.22em;color:var(--muted);margin-top:10px}
.scrollcue{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);z-index:2;font-size:11px;letter-spacing:.3em;color:var(--muted2)}
.scrollcue::after{content:"";display:block;width:1px;height:44px;background:linear-gradient(var(--gold),transparent);margin:10px auto 0}

/* ============ Trust bar ============ */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.trust .row{display:grid;grid-template-columns:repeat(4,1fr)}
.trust .cell{padding:34px 22px;text-align:center;border-right:1px solid var(--line2)}
.trust .cell:last-child{border-right:0}
.trust .n{font-size:36px;color:var(--gold-l);font-weight:600;line-height:1;letter-spacing:.02em}
.trust .n i{font-size:16px;font-style:normal;color:var(--gold);margin-left:2px}
.trust .t{margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.14em}

/* ============ Section shell ============ */
.sec{padding:110px 0}
.sec.alt{background:var(--bg2);border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}
.head{text-align:center;margin-bottom:64px}
.head .en{font-size:12px;letter-spacing:.4em;color:var(--gold);text-transform:uppercase}
.head h2{margin-top:16px;font-size:40px;letter-spacing:.04em;font-weight:600}
.head h2 em{font-style:normal;color:var(--gold-l)}
.head .deco{margin:22px auto 0;width:60px;height:1px;background:var(--gold);position:relative}
.head .deco::after{content:"";position:absolute;left:50%;top:-3px;width:7px;height:7px;background:var(--gold);
  transform:translateX(-50%) rotate(45deg)}
.head p.sub{margin-top:18px;color:var(--muted);font-size:15px;max-width:640px;margin-left:auto;margin-right:auto}
.head.left{text-align:left;margin-bottom:44px}
.head.left .deco{margin-left:0}

/* ============ Products ============ */
.prods{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pcard{background:var(--card);border:1px solid var(--line2);border-radius:3px;overflow:hidden;position:relative;transition:all .35s}
.pcard:hover{border-color:var(--line);transform:translateY(-6px);box-shadow:0 22px 48px rgba(0,0,0,.5)}
.pcard .ph{height:250px;position:relative;overflow:hidden}
.pcard .ph img{width:100%;height:100%;object-fit:cover;transition:transform .7s}
.pcard:hover .ph img{transform:scale(1.07)}
.pcard .ph::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(23,28,33,.95),rgba(23,28,33,.06))}
.pcard .bd{padding:26px 24px 30px;position:relative}
.pcard .bd h3{font-size:19px;letter-spacing:.1em;font-weight:600}
.pcard .bd p{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.9}
.pcard .bd .go{margin-top:20px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line2);padding-top:16px}
.pcard .bd .go span{font-size:13px;color:var(--gold-l);letter-spacing:.06em}
.pcard .bd .go i{font-size:12px;color:var(--gold);font-style:normal;transition:transform .3s}
.pcard:hover .bd .go i{transform:translateX(5px)}

/* ============ Features ============ */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fcard{padding:34px 30px;background:var(--card);border:1px solid var(--line2);border-radius:3px;transition:all .3s}
.fcard:hover{border-color:var(--line);background:var(--card2)}
.fcard .ic{width:46px;height:46px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  border-radius:2px;margin-bottom:20px;color:var(--gold-l)}
.fcard h4{font-size:17px;letter-spacing:.08em;font-weight:600}
.fcard p{margin-top:12px;font-size:13.5px;color:var(--muted);line-height:1.95}

/* ============ Cases ============ */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{position:relative;border-radius:3px;overflow:hidden;height:290px;border:1px solid var(--line2)}
.case img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.case:hover img{transform:scale(1.08)}
.case .ov{position:absolute;inset:0;background:linear-gradient(to top,rgba(8,10,12,.92) 6%,rgba(8,10,12,.1) 60%)}
.case .txt{position:absolute;left:26px;right:26px;bottom:24px}
.case .txt i{font-style:normal;font-size:11px;letter-spacing:.24em;color:var(--gold);text-transform:uppercase}
.case .txt h4{margin-top:8px;font-size:19px;letter-spacing:.06em;font-weight:600}
.case .txt p{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ Process ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{padding:0 26px;text-align:center;position:relative}
.step .no{width:56px;height:56px;margin:0 auto;border:1px solid var(--gold);border-radius:50%;display:flex;align-items:center;
  justify-content:center;font-size:18px;color:var(--gold-l);letter-spacing:.04em;background:rgba(201,169,97,.05)}
.step h4{margin-top:22px;font-size:17px;letter-spacing:.1em}
.step p{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.9}
.step::after{content:"";position:absolute;top:28px;right:-14px;width:28px;height:1px;background:var(--line)}
.step:last-child::after{display:none}

/* ============ FAQ ============ */
.faq{max-width:920px;margin:0 auto}
.q{border-bottom:1px solid var(--line2)}
.q .t{display:flex;align-items:flex-start;gap:16px;padding:24px 4px;cursor:pointer}
.q .t .num{color:var(--gold);font-size:13px;letter-spacing:.1em;padding-top:3px;min-width:34px}
.q .t h4{font-size:16.5px;font-weight:500;letter-spacing:.04em;flex:1}
.q .t .plus{color:var(--gold-l);font-size:20px;line-height:1;transition:transform .3s}
.q.open .t h4{color:var(--gold-l)}
.q.open .t .plus{transform:rotate(45deg)}
.q .a{max-height:0;overflow:hidden;transition:max-height .4s ease;color:var(--muted);font-size:14px;line-height:2}
.q .a p{padding:0 4px 26px 50px}
.q.open .a{max-height:260px}

/* ============ CTA ============ */
.cta{position:relative;padding:96px 0;text-align:center;overflow:hidden;background:var(--bg)}
.cta .bg{position:absolute;inset:0;background:url("../images/prod-carport.jpg") center/cover no-repeat;opacity:.5}
.cta .ov{position:absolute;inset:0;background:linear-gradient(to right,rgba(10,12,14,.88),rgba(10,12,14,.62),rgba(10,12,14,.88))}
.cta .wrap{position:relative;z-index:2}
.cta .en{font-size:12px;letter-spacing:.4em;color:var(--gold);text-transform:uppercase}
.cta h2{margin-top:18px;font-size:40px;letter-spacing:.05em;font-weight:600}
.cta h2 em{font-style:normal;color:var(--gold-l)}
.cta p{margin-top:16px;color:var(--muted);font-size:15px}
.cta .acts{margin-top:36px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta .telbig{margin-top:30px;font-size:30px;color:var(--gold-l);letter-spacing:.06em;font-weight:600}
.cta .telbig small{display:block;font-size:12px;color:var(--muted);letter-spacing:.24em;margin-bottom:8px;font-weight:400}

/* ============ Footer ============ */
.footer{background:#080A0C;border-top:1px solid var(--line);padding:76px 0 0}
.fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px}
.fcol h5{font-size:14px;letter-spacing:.18em;color:var(--gold-l);margin-bottom:22px;font-weight:600}
.fcol a,.fcol p{display:block;font-size:13.5px;color:var(--muted);line-height:2.4;transition:color .2s}
.fcol a:hover{color:var(--gold-l)}
.fbrand .brand{margin-bottom:20px}
.fbrand p{max-width:320px;line-height:2;color:var(--muted2)}
.fbot{margin-top:60px;border-top:1px solid var(--line2);padding:24px 0;display:flex;justify-content:space-between;
  align-items:center;gap:20px;font-size:12.5px;color:var(--muted2);flex-wrap:wrap}
.fbot a{color:var(--muted2)}
.fbot a:hover{color:var(--gold-l)}

/* ============ Floating ============ */
.fab{position:fixed;right:22px;bottom:34px;z-index:90;display:flex;flex-direction:column;gap:10px}
.fab a{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:rgba(18,22,26,.94);
  display:flex;align-items:center;justify-content:center;color:var(--gold-l);backdrop-filter:blur(8px);transition:all .25s;font-size:13px}
.fab a:hover{background:var(--gold);color:#16120A}

/* ============ Responsive ============ */
@media(max-width:1100px){
  .prods{grid-template-columns:repeat(2,1fr)}
  .feats{grid-template-columns:repeat(2,1fr)}
  .cases{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:40px 0}
  .step::after{display:none}
  .hero h1{font-size:44px}
  .hero .price{display:none}
  .fgrid{grid-template-columns:1fr 1fr;gap:36px}
  .nav{display:none}
}
@media(max-width:680px){
  .prods,.feats,.cases,.steps{grid-template-columns:1fr}
  .trust .row{grid-template-columns:repeat(2,1fr)}
  .trust .cell:nth-child(2){border-right:0}
  .hero h1{font-size:34px}
  .head h2{font-size:28px}
}