/* =========================================================
   华源锅炉 · 网站改版样例 v0.3
   ========================================================= */
:root{
  --red:#b0151e; --red-2:#8f1018; --red-3:#5c0a10; --red-soft:#fbeeee;
  --ink:#15171c; --ink-2:#1f232a; --ink-3:#2b3039;
  --text:#2a2e35; --muted:#6b7079; --line:#e7e3dd; --line-2:#efece7;
  --bg:#f6f4f0; --white:#fff; --gold:#c49a58; --gold-2:#e2c48f;
  --num:"Bahnschrift","DIN Alternate","DIN Pro","Barlow Semi Condensed","Arial Narrow",Arial,sans-serif;
  --sans:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",sans-serif;
  --w:1280px; --r:4px; --shadow:0 18px 40px -18px rgba(20,10,10,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font:16px/1.8 var(--sans);color:var(--text);background:#fff;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.container{width:min(var(--w),100% - 48px);margin:0 auto}
.num{font-family:var(--num);font-weight:600;letter-spacing:.5px}
.ico{width:1em;height:1em;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 30px;border:1px solid transparent;border-radius:var(--r);font-size:16px;font-weight:600;cursor:pointer;transition:.25s;white-space:nowrap}
.btn .ico{font-size:18px}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-2)}
.btn-gold{background:linear-gradient(135deg,#d6b072,#b98a44);color:#2a1606}
.btn-gold:hover{filter:brightness(1.07)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:#fff;color:var(--red)}
.btn-line{border-color:var(--red);color:var(--red);background:#fff}
.btn-line:hover{background:var(--red);color:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--red)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--red);font-weight:600;font-size:15px}
.link-more .ico{transition:.25s}
.link-more:hover .ico{transform:translateX(4px)}

/* ---------- 顶部提示条 / topbar ---------- */
.demo-bar{background:#fff7e0;color:#7a5600;font-size:13px;line-height:1.6;padding:7px 24px;text-align:center;border-bottom:1px solid #f0dfae}
.topbar{background:var(--ink);color:rgba(255,255,255,.62);font-size:13px;line-height:38px}
.topbar .container{display:flex;justify-content:space-between;gap:20px}
.topbar .tb-right{display:flex;gap:26px}
.topbar span{display:inline-flex;align-items:center;gap:6px}
.topbar .ico{color:var(--gold-2)}

/* ---------- header ---------- */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 8px 30px -12px rgba(0,0,0,.18)}
.header .container{display:flex;align-items:center;height:88px;gap:28px}
.logo{display:flex;align-items:center;gap:14px;flex:none}
.logo svg{width:50px;height:50px}
.logo-text strong{display:block;font-size:22px;line-height:1.25;color:var(--ink);letter-spacing:1px;white-space:nowrap}
.logo-text small{display:block;font:500 11px/1.4 var(--num);color:var(--muted);letter-spacing:1.2px;text-transform:uppercase;white-space:nowrap}
.nav{display:flex;margin-left:auto;height:100%}
.nav>.nav-item{position:relative;display:flex}
.nav>.nav-item>a{display:flex;align-items:center;padding:0 18px;font-size:16px;font-weight:600;color:var(--ink);position:relative;white-space:nowrap}
.nav>.nav-item>a::after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;background:var(--red);transform:scaleX(0);transition:transform .3s}
.nav>.nav-item:hover>a,.nav>.nav-item>a.active{color:var(--red)}
.nav>.nav-item:hover>a::after,.nav>.nav-item>a.active::after{transform:scaleX(1)}
.mega{position:absolute;top:100%;left:50%;transform:translate(-50%,10px);width:760px;background:#fff;border-top:3px solid var(--red);box-shadow:var(--shadow);padding:26px 28px;display:grid;grid-template-columns:repeat(2,1fr);gap:4px 26px;opacity:0;visibility:hidden;transition:.25s}
.nav-item:hover .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega a{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:var(--r);font-size:14px;line-height:1.5;color:var(--text)}
.mega a .ico{font-size:22px;color:var(--red)}
.mega a:hover{background:var(--red-soft);color:var(--red)}
.header-tel{display:flex;align-items:center;gap:12px;flex:none;padding-left:24px;border-left:1px solid var(--line)}
.header-tel .ring{width:44px;height:44px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-size:20px}
.header-tel small{display:block;font-size:12px;color:var(--muted);line-height:1.3}
.header-tel b{display:block;font:700 22px/1.2 var(--num);color:var(--red);letter-spacing:.5px;white-space:nowrap}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:0;background:none;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;padding:10px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px}

/* ---------- 首页 Hero 轮播 ---------- */
.hero{position:relative;height:720px;overflow:hidden;background:var(--ink);color:#fff}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.2s ease;z-index:0}
.slide.on{opacity:1;z-index:1}
.slide .bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.08);transition:transform 7s linear}
.slide.on .bg{transform:scale(1)}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,6,8,.92) 0%,rgba(70,8,14,.72) 38%,rgba(20,8,10,.18) 72%,rgba(0,0,0,.05) 100%),linear-gradient(0deg,rgba(0,0,0,.55),rgba(0,0,0,0) 40%)}
.slide .container{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;padding-bottom:110px}
.slide .txt{max-width:680px}
.slide .txt>*{opacity:0;transform:translateY(24px);transition:.8s cubic-bezier(.2,.7,.2,1)}
.slide.on .txt>*{opacity:1;transform:none}
.slide.on .txt>*:nth-child(2){transition-delay:.15s}
.slide.on .txt>*:nth-child(3){transition-delay:.3s}
.slide.on .txt>*:nth-child(4){transition-delay:.45s}
.kicker{display:inline-flex;align-items:center;gap:12px;font:600 14px/1 var(--num);letter-spacing:3px;text-transform:uppercase;color:var(--gold-2)}
.kicker::before{content:"";width:36px;height:2px;background:currentColor}
.slide h1,.slide h2{font-size:56px;line-height:1.25;font-weight:700;margin:22px 0 20px;letter-spacing:2px;text-shadow:0 4px 30px rgba(0,0,0,.35)}
.slide h1 em,.slide h2 em{font-style:normal;color:var(--gold-2);font-family:var(--num)}
.slide p.lead{font-size:18px;color:rgba(255,255,255,.86);max-width:600px}
.slide .btns{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.hero-ctrl{position:absolute;z-index:5;right:max(24px,calc((100% - var(--w))/2));bottom:150px;display:flex;align-items:center;gap:18px;font-family:var(--num)}
.hero-ctrl .count{font-size:15px;color:rgba(255,255,255,.7);letter-spacing:2px}
.hero-ctrl .count b{font-size:28px;color:#fff;font-weight:600}
.hero-ctrl button{width:46px;height:46px;border:1px solid rgba(255,255,255,.4);border-radius:50%;background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center;font-size:18px;transition:.25s}
.hero-ctrl button:hover{background:var(--red);border-color:var(--red)}
.hero-bar{position:absolute;z-index:5;left:0;right:0;bottom:0;background:rgba(10,10,14,.5);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-top:1px solid rgba(255,255,255,.12)}
.hero-bar .container{display:grid;grid-template-columns:repeat(4,1fr)}
.hero-bar .q{display:flex;align-items:center;gap:14px;padding:24px 22px;border-left:1px solid rgba(255,255,255,.1)}
.hero-bar .q:last-child{border-right:1px solid rgba(255,255,255,.1)}
.hero-bar .q .ico{font-size:34px;color:var(--gold-2);stroke-width:1.3}
.hero-bar .q b{display:block;font-size:16px;line-height:1.4}
.hero-bar .q small{display:block;font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.4}
.hero-progress{position:absolute;z-index:6;left:0;bottom:0;height:3px;background:var(--red);width:0}
.hero-progress.run{animation:prog 6s linear forwards}
@keyframes prog{to{width:100%}}

/* ---------- 数据条 ---------- */
.stats-wrap{position:relative;z-index:6;margin-top:-1px;background:#fff}
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;box-shadow:0 30px 60px -30px rgba(0,0,0,.25);transform:translateY(-0px)}
.stat{padding:40px 30px 36px;position:relative;border-right:1px solid var(--line-2)}
.stat:last-child{border-right:0}
.stat b{display:flex;align-items:baseline;gap:4px;font:600 54px/1 var(--num);color:var(--red);letter-spacing:0}
.stat b small{white-space:nowrap;font-size:18px;color:var(--ink);font-weight:600}
.stat>span{display:block;margin-top:12px;font-size:15px;color:var(--muted)}
.stat::before{content:"";position:absolute;left:30px;top:0;width:30px;height:3px;background:var(--red)}
.stats.dark{background:transparent;box-shadow:none}
.stats.dark .stat{border-color:rgba(255,255,255,.12)}
.stats.dark .stat b{color:#fff}
.stats.dark .stat b small{white-space:nowrap;color:var(--gold-2)}
.stats.dark .stat>span{color:rgba(255,255,255,.65)}
.stats.dark .stat::before{background:var(--gold)}

/* ---------- 版块 ---------- */
.section{padding:110px 0}
.section.tight{padding:80px 0}
.section.bg{background:var(--bg)}
.section.dark{background:var(--ink);color:#fff}
.section.red{background:var(--red-3);color:#fff}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-head .kicker{color:var(--red);justify-content:center}
.sec-head .kicker::after{content:"";width:36px;height:2px;background:currentColor}
.sec-head h2{font-size:40px;line-height:1.3;color:var(--ink);margin:16px 0 14px;letter-spacing:1px}
.sec-head p{font-size:16px;color:var(--muted)}
.sec-head.left{text-align:left;margin:0 0 48px;max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:30px}
.sec-head.left .kicker{justify-content:flex-start}
.sec-head.left .kicker::after{display:none}
.sec-head.left p{max-width:560px}
.dark .sec-head h2,.red .sec-head h2{color:#fff}
.dark .sec-head p,.red .sec-head p{color:rgba(255,255,255,.65)}
.dark .sec-head .kicker,.red .sec-head .kicker{color:var(--gold-2)}

/* ---------- 产品体系 ---------- */
.cat-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cat-feature{grid-row:span 2;background:var(--red) url("../img/membrane-wall.jpg") center/cover;position:relative;color:#fff;padding:40px 34px;display:flex;flex-direction:column;overflow:hidden}
.cat-feature::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(176,21,30,.94),rgba(92,10,16,.92))}
.cat-feature>*{position:relative}
.cat-feature .kicker{color:var(--gold-2)}
.cat-feature h3{font-size:30px;line-height:1.35;margin:18px 0 14px}
.cat-feature p{color:rgba(255,255,255,.8);font-size:15px}
.cat-feature .big{margin-top:auto;font:600 72px/1 var(--num)}
.cat-feature .big small{font-size:20px;margin-left:6px}
.cat-feature .btn{margin-top:26px;align-self:flex-start}
.cat-card{background:#fff;padding:30px 28px 26px;position:relative;transition:.3s;display:flex;flex-direction:column;min-height:210px}
.cat-card .ico{font-size:42px;color:var(--red);stroke-width:1.3;transition:.3s}
.cat-card h3{font-size:17px;line-height:1.5;color:var(--ink);margin:18px 0 8px;transition:.3s}
.cat-card p{font-size:13.5px;line-height:1.7;color:var(--muted);transition:.3s}
.cat-card .go{position:absolute;right:24px;top:30px;transition:.3s}
.cat-card .go .ico{font-size:20px;color:#cfc9c1;stroke-width:1.6}
.cat-card:hover{background:var(--ink);transform:translateY(-4px);box-shadow:var(--shadow);z-index:2}
.cat-card:hover h3{color:#fff}
.cat-card:hover p{color:rgba(255,255,255,.62)}
.cat-card:hover .ico{color:var(--gold-2)}
.cat-card:hover .go{transform:translateX(4px)}
.cat-card:hover .go .ico{color:var(--gold-2)}

/* ---------- 选型计算器 ---------- */
.calc-sec{position:relative;overflow:hidden}
.calc-sec::before{content:"";position:absolute;inset:0;background:url("../img/drum-tubes.jpg") center/cover;opacity:.13}
.calc-sec>.container{position:relative}
.calc{display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(4px)}
.calc-form{padding:40px 40px 34px;border-right:1px solid rgba(255,255,255,.12)}
.calc-form h3,.calc-out h3{font-size:20px;margin-bottom:24px;display:flex;align-items:center;gap:10px}
.calc-form h3 .ico,.calc-out h3 .ico{color:var(--gold-2);font-size:24px}
.seg{display:flex;border:1px solid rgba(255,255,255,.22);border-radius:var(--r);overflow:hidden;margin-bottom:22px}
.seg label{flex:1;text-align:center;cursor:pointer;padding:11px 6px;font-size:15px;color:rgba(255,255,255,.75);border-right:1px solid rgba(255,255,255,.18);transition:.2s;white-space:nowrap}
.seg label:last-child{border-right:0}
.seg input{display:none}
.seg label.on{background:var(--red);color:#fff}
.calc-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.calc label.f{display:block;font-size:13.5px;color:rgba(255,255,255,.65);margin-bottom:8px}
.calc .inp{display:flex;align-items:center;border:1px solid rgba(255,255,255,.22);border-radius:var(--r);background:rgba(0,0,0,.25);transition:.2s}
.calc .inp:focus-within{border-color:var(--gold)}
.calc .inp input,.calc .inp select{flex:1;min-width:0;height:48px;border:0;background:transparent;padding:0 14px;color:#fff;font:600 18px var(--num);outline:none}
.calc .inp select{font:15px var(--sans);appearance:none;-webkit-appearance:none;cursor:pointer}
.calc .inp select option{color:var(--ink)}
.calc .inp em{font-style:normal;font-size:13px;color:rgba(255,255,255,.55);padding:0 14px;white-space:nowrap}
.calc-note{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:8px;line-height:1.7}
.calc-out{padding:40px 40px 34px;display:flex;flex-direction:column}
.calc-main{display:flex;align-items:flex-end;gap:16px;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.12)}
.calc-main .v{font:600 76px/0.95 var(--num);color:#fff}
.calc-main .u{font:600 24px/1.4 var(--num);color:var(--gold-2)}
.calc-main .s{margin-left:auto;text-align:right;font-size:13px;color:rgba(255,255,255,.55);line-height:1.6}
.calc-main .s b{display:block;font:600 22px var(--num);color:#fff}
.calc-kv{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid rgba(255,255,255,.12)}
.calc-kv div{padding:18px 0}
.calc-kv div:nth-child(odd){border-right:1px solid rgba(255,255,255,.12);padding-right:18px}
.calc-kv div:nth-child(even){padding-left:22px}
.calc-kv div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.12)}
.calc-kv small{display:block;font-size:13px;color:rgba(255,255,255,.55)}
.calc-kv b{font:600 26px/1.3 var(--num);color:#fff}
.calc-kv b i{font-style:normal;font-size:14px;color:rgba(255,255,255,.6);margin-left:4px}
.calc-rec{padding:20px 0 6px;font-size:14.5px;color:rgba(255,255,255,.82)}
.calc-rec b{color:var(--gold-2)}
.calc-rec a{display:inline-flex;align-items:center;gap:4px;margin:8px 8px 0 0;padding:4px 12px;border:1px solid rgba(226,196,143,.4);border-radius:30px;font-size:13px;color:var(--gold-2);transition:.2s}
.calc-rec a:hover{background:var(--gold);color:var(--ink)}
.calc-warn{font-size:13px;color:#ffcf8a;margin-top:8px}
.calc-out .btn{margin-top:auto}
.calc-out .actions{display:flex;gap:12px;margin-top:22px}
.calc-out .actions .btn{flex:1;margin-top:0}

/* ---------- 生物质专区 ---------- */
.bio{display:grid;grid-template-columns:5fr 7fr;gap:70px;align-items:center}
.bio-pic{position:relative}
.bio-pic img{width:100%;height:620px;object-fit:cover}
.bio-pic .badge{position:absolute;right:-34px;bottom:44px;background:var(--red);color:#fff;padding:26px 30px;box-shadow:var(--shadow)}
.bio-pic .badge b{display:block;font:600 46px/1 var(--num)}
.bio-pic .badge b small{font-size:18px;margin-left:4px}
.bio-pic .badge span{font-size:13.5px;opacity:.85}
.bio-pic::before{content:"";position:absolute;left:-22px;top:-22px;width:46%;height:46%;border-left:3px solid var(--red);border-top:3px solid var(--red)}
.bio h2{font-size:38px;line-height:1.3;color:var(--ink);margin:16px 0 18px}
.bio .kicker{color:var(--red)}
.bio>div>p{color:var(--muted);margin-bottom:28px}
.tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:24px;flex-wrap:wrap}
.tabs button{border:0;background:none;padding:12px 18px;font-size:15.5px;font-weight:600;color:var(--muted);cursor:pointer;position:relative;white-space:nowrap}
.tabs button::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:var(--red);transform:scaleX(0);transition:.3s}
.tabs button.on{color:var(--red)}
.tabs button.on::after{transform:scaleX(1)}
.tab-panel h4{font-size:19px;color:var(--ink);margin-bottom:10px}
.tab-panel>p{color:var(--muted);font-size:15px;margin-bottom:14px}
.ticks li{position:relative;padding-left:30px;margin-bottom:10px;font-size:15px;line-height:1.75}
.ticks li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:var(--red-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b0151e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/12px no-repeat}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 26px}
.chip{display:inline-flex;flex-direction:column;padding:10px 16px;background:var(--bg);border-left:3px solid var(--red);min-width:140px}
.chip small{font-size:12px;color:var(--muted);line-height:1.4}
.chip b{font:600 18px/1.4 var(--num);color:var(--ink)}

/* ---------- 制造与质检 ---------- */
.mfg{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;counter-reset:mfg}
.mfg-item{background:#fff;position:relative;overflow:hidden;transition:.3s}
.mfg-item:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.mfg-item .ph{height:170px;overflow:hidden}
.mfg-item .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.mfg-item:hover .ph img{transform:scale(1.07)}
.mfg-item .t{padding:20px 20px 24px;position:relative}
.mfg-item .t::before{counter-increment:mfg;content:"0" counter(mfg);position:absolute;right:16px;top:-28px;font:600 40px/1 var(--num);color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.mfg-item h4{font-size:17px;color:var(--ink);margin-bottom:6px}
.mfg-item p{font-size:13.5px;line-height:1.7;color:var(--muted)}
.std{margin-top:50px;display:grid;grid-template-columns:220px 1fr;background:#fff;border:1px solid var(--line)}
.std-h{background:var(--ink);color:#fff;padding:26px 28px;display:flex;flex-direction:column;justify-content:center}
.std-h b{font-size:20px}
.std-h small{color:rgba(255,255,255,.55);font:13px var(--num);letter-spacing:2px}
.std ul{display:grid;grid-template-columns:repeat(3,1fr)}
.std li{padding:18px 24px;border-left:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px;line-height:1.6;color:var(--muted)}
.std li b{display:block;font:600 15px var(--num);color:var(--red)}

/* ---------- 资质荣誉 ---------- */
.hon{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.qual-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.qual{border:1px solid rgba(255,255,255,.16);padding:26px 24px;display:flex;gap:18px;align-items:center;background:rgba(255,255,255,.03);transition:.3s}
.qual:hover{background:rgba(255,255,255,.08);border-color:var(--gold)}
.seal{width:66px;height:66px;flex:none;border-radius:50%;border:2px solid var(--gold);display:grid;place-items:center;font:700 17px/1 var(--sans);color:var(--gold-2);position:relative}
.seal::after{content:"";position:absolute;inset:4px;border-radius:50%;border:1px dashed rgba(226,196,143,.5)}
.qual h4{font-size:16.5px;line-height:1.5}
.qual p{font-size:13px;color:rgba(255,255,255,.55)}
.honors{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid rgba(255,255,255,.14)}
.honors li{display:flex;align-items:center;gap:14px;padding:17px 4px;border-bottom:1px solid rgba(255,255,255,.14);font-size:15.5px}
.honors li .ico{font-size:26px;color:var(--gold-2);stroke-width:1.4}
.partners{margin-top:36px}
.partners h4,.hon h3{font-size:14px;letter-spacing:2px;color:rgba(255,255,255,.5);font-weight:500;margin-bottom:16px}
.partners .ps{display:flex;gap:12px;flex-wrap:wrap}
.partners .ps span{padding:12px 20px;border:1px solid rgba(255,255,255,.18);font-size:15px;display:inline-flex;align-items:center;gap:10px}
.partners .ps .ico{color:var(--gold-2);font-size:20px}

/* ---------- 产品卡片 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.3s}
.prod-card:hover{border-color:transparent;box-shadow:var(--shadow);transform:translateY(-4px)}
.prod-card .pic{display:block;position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg)}
.prod-card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.prod-card:hover .pic img{transform:scale(1.06)}
.prod-card .tag{position:absolute;left:0;top:18px;background:var(--red);color:#fff;font-size:12.5px;padding:3px 12px;line-height:1.6}
.prod-card .vt{position:absolute;right:12px;top:18px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:2px 10px;border-radius:20px}
.prod-card .body{padding:24px 24px 0;flex:1}
.prod-card h3{font-size:18px;line-height:1.5;color:var(--ink);margin-bottom:10px}
.prod-card h3 a:hover{color:var(--red)}
.prod-card p{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.prod-card .foot{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;margin-top:20px;border-top:1px solid var(--line-2);font-size:14px}
.prod-card .foot a:first-child{color:var(--red);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.prod-card .foot a:last-child{color:var(--muted)}
.prod-card .foot a:last-child:hover{color:var(--red)}

/* ---------- 工程案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:270px;gap:16px}
.case{position:relative;overflow:hidden;display:block;background:var(--ink)}
.case.big{grid-column:span 2;grid-row:span 2}
.case img{width:100%;height:100%;object-fit:cover;transition:transform .7s;opacity:.92}
.case:hover img{transform:scale(1.06)}
.case::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,6,6,.88) 0%,rgba(10,6,6,.15) 55%,rgba(0,0,0,0))}
.case .cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px 24px;color:#fff}
.case .cap .cap-tags{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap}
.case .cap .cap-tags span{font-size:12px;background:var(--red);padding:1px 10px}
.case .cap .cap-tags span+span{background:rgba(255,255,255,.18)}
.case .cap h4{font-size:17px;line-height:1.5}
.case.big .cap{padding:34px 36px}
.case.big .cap h4{font-size:26px}
.case .cap .cap-num{font:600 15px var(--num);color:var(--gold-2);letter-spacing:1px}
.case.big .cap .cap-num{font-size:46px;line-height:1.1;margin-bottom:6px}
.filter{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.filter button{border:1px solid var(--line);background:#fff;padding:8px 22px;border-radius:40px;font-size:14.5px;cursor:pointer;transition:.2s}
.filter button.on,.filter button:hover{background:var(--red);border-color:var(--red);color:#fff}

/* ---------- 新闻 ---------- */
.news-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:50px}
.news-feature{display:block;background:#fff;border:1px solid var(--line);transition:.3s}
.news-feature:hover{box-shadow:var(--shadow)}
.news-feature .ph{height:300px;overflow:hidden;position:relative}
.news-feature .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.news-feature:hover .ph img{transform:scale(1.05)}
.news-feature .ph .d{position:absolute;left:0;bottom:0;background:var(--red);color:#fff;padding:12px 20px;font-family:var(--num);line-height:1.2;text-align:center}
.news-feature .ph .d b{display:block;font-size:30px}
.news-feature .ph .d small{font-size:13px;opacity:.85}
.news-feature .b{padding:26px 30px 30px}
.news-feature h3{font-size:21px;line-height:1.5;color:var(--ink);margin:6px 0 12px}
.news-feature p{font-size:14.5px;color:var(--muted)}
.type{display:inline-block;font-size:12.5px;color:var(--red);border:1px solid rgba(176,21,30,.35);padding:0 10px;line-height:22px;margin-right:10px;vertical-align:2px;white-space:nowrap}
.news-list li{display:flex;gap:22px;padding:22px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.news-list li:first-child{padding-top:0}
.news-list .date{flex:none;width:72px;text-align:center;border-right:1px solid var(--line);padding-right:18px;font-family:var(--num);line-height:1.2}
.news-list .date b{display:block;font-size:32px;font-weight:600;color:var(--ink)}
.news-list .date small{font-size:13px;color:var(--muted)}
.news-list h4{font-size:16.5px;line-height:1.6;color:var(--ink);font-weight:600;transition:.2s}
.news-list li:hover h4{color:var(--red)}
.news-list p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.75}

/* ---------- CTA ---------- */
.cta{position:relative;background:var(--red-3) url("../img/workshop.jpg") center/cover;color:#fff;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(130,12,20,.96),rgba(90,8,14,.88) 55%,rgba(40,6,10,.72))}
.cta .container{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:72px 0}
.cta h2{font-size:34px;line-height:1.4;margin-bottom:10px}
.cta p{color:rgba(255,255,255,.75)}
.cta .tel{display:flex;align-items:center;gap:16px;margin-top:22px}
.cta .tel .ico{font-size:34px;color:var(--gold-2)}
.cta .tel b{font:600 38px/1 var(--num);letter-spacing:1px}
.cta .btns{display:flex;gap:14px;flex:none}

/* ---------- 内页 Banner ---------- */
.banner{position:relative;height:380px;background:var(--ink) center/cover;color:#fff;display:flex;align-items:flex-end}
.banner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,6,8,.9),rgba(92,10,16,.55) 55%,rgba(0,0,0,.15)),linear-gradient(0deg,rgba(0,0,0,.4),transparent 50%)}
.banner .container{position:relative;padding-bottom:50px}
.banner h1{font-size:46px;line-height:1.3;letter-spacing:3px;margin:14px 0 6px}
.banner .crumb{font-size:14px;color:rgba(255,255,255,.7);display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.banner .crumb a:hover{color:#fff}
.banner .crumb .sep{opacity:.5}
.subnav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:88px;z-index:40}
.subnav .container{display:flex;gap:6px;overflow-x:auto}
.subnav a{padding:0 22px;line-height:62px;font-size:15.5px;font-weight:600;color:var(--muted);white-space:nowrap;border-bottom:3px solid transparent}
.subnav a:hover,.subnav a.on{color:var(--red);border-color:var(--red)}

/* ---------- 关于我们 ---------- */
.intro{display:grid;grid-template-columns:1.15fr 1fr;gap:70px;align-items:center}
.intro .txt h2{font-size:36px;line-height:1.35;color:var(--ink);margin:16px 0 22px}
.intro .txt .kicker{color:var(--red)}
.intro .txt p{color:#4b5059;margin-bottom:16px;text-align:justify}
.intro .txt p:first-of-type::first-letter{font-size:1em}
.intro .pics{position:relative;height:560px}
.intro .pics img{position:absolute;object-fit:cover;box-shadow:var(--shadow)}
.intro .pics .a{right:0;top:0;width:82%;height:72%}
.intro .pics .b{left:0;bottom:0;width:54%;height:46%;border:8px solid #fff}
.intro .pics .yr{position:absolute;right:20px;bottom:20px;text-align:right;font:600 96px/1 var(--num);color:var(--red-soft);-webkit-text-stroke:1px rgba(176,21,30,.35)}
.intro .pics .yr small{display:block;font:14px var(--sans);color:var(--muted);-webkit-text-stroke:0;letter-spacing:2px}
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value{background:#fff;padding:40px 30px;border-top:3px solid transparent;transition:.3s}
.value:hover{border-color:var(--red);box-shadow:var(--shadow)}
.value .ico{font-size:46px;color:var(--red);stroke-width:1.3}
.value small{display:block;margin-top:20px;font:600 13px var(--num);letter-spacing:2px;color:var(--gold)}
.value h3{font-size:22px;color:var(--ink);margin:4px 0 10px}
.value p{font-size:14.5px;color:var(--muted)}

/* ---------- 侧栏布局（产品/新闻） ---------- */
.layout{display:grid;grid-template-columns:290px 1fr;gap:44px;align-items:start}
.layout>*,.calc>*,.bio>*,.hon>*,.intro>*,.news-wrap>*,.pd-top>*,.contact-main>*,.pay-grid>*{min-width:0}
.side{position:sticky;top:120px}
.side-box{background:#fff;border:1px solid var(--line);margin-bottom:24px}
.side-box h3{background:var(--red);color:#fff;font-size:19px;padding:20px 24px;line-height:1.3}
.side-box h3 small{display:block;font:500 12px var(--num);letter-spacing:2px;opacity:.7;margin-top:4px}
.side-box ul li a{display:flex;justify-content:space-between;gap:8px;padding:13px 24px;font-size:14.5px;line-height:1.55;border-bottom:1px solid var(--line-2);transition:.2s}
.side-box ul li a i{font-style:normal;font-family:var(--num);color:#b3b7bd;font-size:13px}
.side-box ul li a:hover,.side-box ul li a.on{color:var(--red);background:var(--red-soft);box-shadow:inset 3px 0 var(--red)}
.side-tel{background:var(--ink) url("../img/membrane-wall.jpg") center/cover;position:relative;color:#fff;padding:30px 26px}
.side-tel::before{content:"";position:absolute;inset:0;background:rgba(20,10,12,.88)}
.side-tel>*{position:relative}
.side-tel small{color:rgba(255,255,255,.6);font-size:13px}
.side-tel b{display:block;font:600 28px/1.4 var(--num);color:var(--gold-2);margin:4px 0 12px}
.side-tel p{font-size:13px;color:rgba(255,255,255,.7);line-height:1.8}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-bottom:20px;margin-bottom:28px;border-bottom:1px solid var(--line)}
.toolbar h2{font-size:24px;color:var(--ink);line-height:1.4}
.toolbar h2 small{font:14px var(--sans);color:var(--muted);margin-left:10px}
.search{display:flex;align-items:center;border:1px solid var(--line);height:44px;width:300px;padding:0 14px;gap:8px;background:#fff}
.search:focus-within{border-color:var(--red)}
.search .ico{color:var(--muted);font-size:18px}
.search input{border:0;outline:none;flex:1;min-width:0;font-size:14.5px;background:transparent}
.layout .prod-grid{grid-template-columns:repeat(3,1fr);gap:22px}
.empty{padding:70px 20px;text-align:center;color:var(--muted);background:var(--bg)}

/* ---------- 产品详情 ---------- */
.pd-top{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;margin-bottom:56px}
.pd-pic{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg)}
.pd-pic img{width:100%;height:100%;object-fit:cover}
.pd-pic .tag{position:absolute;left:0;top:20px;background:var(--red);color:#fff;padding:4px 14px;font-size:13px}
.pd-info h1{font-size:28px;line-height:1.4;color:var(--ink);margin-bottom:14px}
.pd-info .sum{font-size:15px;color:#4b5059;padding-bottom:20px;border-bottom:1px dashed var(--line)}
.pd-info dl{display:grid;grid-template-columns:86px 1fr;gap:10px 14px;padding:20px 0;font-size:14.5px;border-bottom:1px dashed var(--line)}
.pd-info dt{color:var(--muted)}
.pd-info dd{color:var(--ink)}
.pd-hot{display:flex;align-items:center;gap:14px;margin:22px 0}
.pd-hot .ring{width:50px;height:50px;border-radius:50%;background:var(--red-soft);color:var(--red);display:grid;place-items:center;font-size:22px}
.pd-hot small{display:block;color:var(--muted);font-size:13px}
.pd-hot b{font:600 28px/1.2 var(--num);color:var(--red)}
.pd-info .btns{display:flex;gap:12px;flex-wrap:wrap}
.pd-tabs{position:sticky;top:88px;z-index:10;background:#fff;display:flex;border-bottom:2px solid var(--ink);margin-bottom:34px}
.pd-tabs a{padding:0 26px;line-height:54px;font-size:16px;font-weight:600;color:var(--muted)}
.pd-tabs a.on,.pd-tabs a:hover{background:var(--ink);color:#fff}
.pd-sec{margin-bottom:46px;scroll-margin-top:170px}
.pd-sec>h3{font-size:22px;color:var(--ink);margin-bottom:18px;display:flex;align-items:center;gap:12px}
.pd-sec>h3::before{content:"";width:4px;height:22px;background:var(--red)}
.pd-sec>p{color:#4b5059}
.feat-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;counter-reset:f}
.feat-list li{background:var(--bg);padding:22px 24px 22px 70px;position:relative;font-size:15px;line-height:1.75}
.feat-list li::before{counter-increment:f;content:"0" counter(f);position:absolute;left:22px;top:20px;font:600 26px/1 var(--num);color:var(--red)}
.params{width:100%;border-collapse:collapse;font-size:15px}
.params th,.params td{border:1px solid var(--line);padding:14px 20px;text-align:left;vertical-align:top}
.params th{width:220px;background:var(--bg);color:var(--ink);font-weight:600}
.params caption{caption-side:bottom;text-align:left;font-size:13px;color:var(--muted);padding-top:10px}
.note{background:#fff8e6;border-left:3px solid #e0a800;padding:12px 18px;font-size:14px;color:#7a5600;margin-bottom:22px}
.apps{display:flex;flex-wrap:wrap;gap:12px}
.apps span{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--line);font-size:14.5px}
.apps span .ico{color:var(--red);font-size:18px}

/* ---------- 联系我们 ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:60px}
.c-card{background:#fff;border:1px solid var(--line);padding:32px 28px;transition:.3s}
.c-card:hover{border-color:var(--red);box-shadow:var(--shadow)}
.c-card .ico{font-size:34px;color:var(--red);stroke-width:1.4}
.c-card small{display:block;margin-top:18px;color:var(--muted);font-size:14px}
.c-card b{display:block;font:600 22px/1.5 var(--num);color:var(--ink);word-break:break-all}
.c-card b.s{font:600 16px/1.6 var(--sans)}
.contact-main{display:grid;grid-template-columns:1fr 1.25fr;gap:0;box-shadow:var(--shadow)}
.c-info{background:var(--ink) url("../img/plant-aerial.jpg") center/cover;position:relative;color:#fff;padding:46px 42px}
.c-info::before{content:"";position:absolute;inset:0;background:linear-gradient(170deg,rgba(92,10,16,.95),rgba(21,23,28,.95))}
.c-info>*{position:relative}
.c-info h3{font-size:26px;margin-bottom:6px}
.c-info .en{font:13px var(--num);letter-spacing:2px;color:rgba(255,255,255,.5);margin-bottom:28px}
.c-info ul li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:15px}
.c-info ul li em{font-style:normal;flex:0 0 90px;color:rgba(255,255,255,.55);white-space:nowrap}
.c-info ul li span{font-family:var(--num);font-size:17px}
.c-info .addr{margin-top:26px;display:flex;gap:12px;font-size:15px;line-height:1.7}
.c-info .addr .ico{font-size:22px;color:var(--gold-2);margin-top:3px}
.c-info .nav-links{display:flex;gap:10px;margin-top:22px}
.form-box{background:#fff;padding:46px 46px 40px}
.form-box h3{font-size:26px;color:var(--ink)}
.form-box>p{color:var(--muted);font-size:14.5px;margin:4px 0 26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
.form-grid .full{grid-column:1/-1}
.fld label{display:block;font-size:14px;color:var(--ink);margin-bottom:7px;font-weight:600}
.fld label i{color:var(--red);font-style:normal;margin-left:3px}
.fld input,.fld select,.fld textarea{width:100%;height:48px;border:1px solid #d9d5cf;border-radius:var(--r);padding:0 14px;font-size:15px;background:#fff;outline:none;transition:.2s}
.fld textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(176,21,30,.1)}
.fld .err{border-color:#d93025;background:#fff6f5}
.fld small{display:block;font-size:12.5px;color:var(--muted);margin-top:6px}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:26px;flex-wrap:wrap}
.form-foot p{font-size:13px;color:var(--muted)}
.ok-box{text-align:center;padding:40px 10px}
.ok-box .big{width:76px;height:76px;margin:0 auto 18px;border-radius:50%;background:#e8f6ec;color:#2f9e44;display:grid;place-items:center;font-size:40px}
.ok-box h3{font-size:24px;color:var(--ink);margin-bottom:8px}
.ok-box p{color:var(--muted)}

/* ---------- 在线支付 ---------- */
.pay-steps{display:flex;margin-bottom:44px;background:#fff;border:1px solid var(--line)}
.pay-steps li{flex:1;display:flex;align-items:center;justify-content:center;gap:12px;padding:18px 10px;font-size:15.5px;color:var(--muted);position:relative}
.pay-steps li b{width:32px;height:32px;border-radius:50%;border:2px solid currentColor;display:grid;place-items:center;font:600 15px var(--num)}
.pay-steps li+li::before{content:"";position:absolute;left:0;top:50%;width:1px;height:28px;margin-top:-14px;background:var(--line)}
.pay-steps li.on{color:var(--red);font-weight:600;background:var(--red-soft)}
.pay-steps li.on b{background:var(--red);border-color:var(--red);color:#fff}
.pay-steps li.done{color:#2f9e44}
.pay-grid{display:grid;grid-template-columns:1fr 380px;gap:36px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);padding:36px 38px}
.panel h3{font-size:20px;color:var(--ink);margin-bottom:22px;display:flex;align-items:center;gap:10px}
.panel h3 .ico{color:var(--red);font-size:22px}
.panel h3+.form-grid{margin-bottom:30px}
.paytype{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:26px}
.paytype label{border:1px solid #d9d5cf;border-radius:var(--r);padding:16px 18px;cursor:pointer;display:flex;align-items:center;gap:12px;transition:.2s;position:relative}
.paytype label.on{border-color:var(--red);box-shadow:0 0 0 1px var(--red);background:var(--red-soft)}
.paytype label.on::after{content:"✓";position:absolute;right:0;top:0;width:22px;height:22px;background:var(--red);color:#fff;font-size:13px;display:grid;place-items:center;border-bottom-left-radius:var(--r)}
.paytype input{display:none}
.paytype .pi{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px;flex:none}
.paytype b{display:block;font-size:15.5px;color:var(--ink);line-height:1.4}
.paytype small{display:block;font-size:12px;color:var(--muted);line-height:1.4}
.amount-inp{display:flex;align-items:center;border:1px solid #d9d5cf;border-radius:var(--r);height:62px;padding:0 18px;gap:10px}
.amount-inp:focus-within{border-color:var(--red);box-shadow:0 0 0 3px rgba(176,21,30,.1)}
.amount-inp span{font:600 26px var(--num);color:var(--red)}
.amount-inp input{border:0!important;box-shadow:none!important;height:58px!important;padding:0!important;font:600 28px var(--num)!important;color:var(--ink);background:transparent!important}
.summary{position:sticky;top:120px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--red)}
.summary h3{font-size:18px;padding:22px 26px 14px;color:var(--ink)}
.summary dl{padding:0 26px;display:grid;grid-template-columns:76px 1fr;gap:12px 10px;font-size:14px}
.summary dt{color:var(--muted)}
.summary dd{color:var(--ink);text-align:right;word-break:break-all}
.summary .total{margin:20px 26px 0;padding:20px 0;border-top:1px dashed var(--line);text-align:right}
.summary .total small{display:block;font-size:13px;color:var(--muted)}
.summary .total b{display:block;font:600 36px/1.3 var(--num);color:var(--red)}
.summary .total i{display:block;font-style:normal;font-size:13px;color:var(--ink)}
.summary .tip{margin:0 26px 18px;font-size:13px;line-height:1.7;background:#fff8e6;color:#7a5600;padding:10px 14px;display:none}
.summary .btn{margin:0 26px 18px;width:calc(100% - 52px)}
.summary .safe{display:flex;align-items:center;gap:8px;justify-content:center;font-size:12.5px;color:var(--muted);padding:14px;border-top:1px solid var(--line-2);background:var(--bg)}
.summary .safe .ico{color:#2f9e44;font-size:16px}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);margin-top:8px}
.agree input{margin-top:6px;accent-color:var(--red)}
.pay-help{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pay-help div{background:var(--bg);padding:20px 22px;font-size:13.5px;color:var(--muted);line-height:1.75}
.pay-help b{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:15px;margin-bottom:6px}
.pay-help .ico{color:var(--red)}
.modal{position:fixed;inset:0;z-index:100;background:rgba(10,10,14,.6);display:none;align-items:center;justify-content:center;padding:20px}
.modal.show{display:flex}
.modal-box{background:#fff;width:420px;max-width:100%;max-height:calc(100vh - 40px);overflow:auto;position:relative;text-align:center;animation:pop .3s}
@keyframes pop{from{transform:scale(.94);opacity:0}}
.modal-box .mh{padding:18px 24px;border-bottom:1px solid var(--line);font-size:17px;font-weight:600}
.modal-box .x{position:absolute;right:12px;top:10px;width:36px;height:36px;border:0;background:none;font-size:24px;cursor:pointer;color:var(--muted)}
.modal-box .mb{padding:24px 30px 30px}
.modal-box .amt{font:600 38px var(--num);color:var(--red)}
.qr{width:210px;height:210px;margin:18px auto;padding:12px;border:1px solid var(--line);position:relative}
.qr .badge{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:40px;height:40px;border-radius:8px;border:3px solid #fff;color:#fff;display:grid;place-items:center;font-weight:700}
.bank-info{text-align:left;background:var(--bg);padding:16px 20px;font-size:14px}
.bank-info p{display:flex;gap:10px;padding:5px 0}
.bank-info em{font-style:normal;color:var(--muted);flex:0 0 70px}
.receipt{max-width:720px;margin:0 auto;background:#fff;border:1px solid var(--line);padding:50px 56px;position:relative}
.receipt h2{text-align:center;font-size:28px;letter-spacing:8px;color:var(--ink)}
.receipt table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.receipt td{border:1px solid var(--line);padding:12px 16px}
.receipt td:first-child{width:150px;background:var(--bg);color:var(--muted)}
.receipt .stamp{position:absolute;right:56px;top:40px;width:110px;height:110px;border:3px solid rgba(176,21,30,.75);border-radius:50%;color:rgba(176,21,30,.8);display:grid;place-items:center;text-align:center;font-weight:700;line-height:1.3;transform:rotate(-14deg)}

/* ---------- 新闻页 / 案例页 ---------- */
.news-page .news-list li{padding:28px 0}

/* ---------- 版权页 ---------- */
.credits{width:100%;border-collapse:collapse;font-size:14px}
.credits th,.credits td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.credits th{background:var(--bg)}
.credits td a{color:var(--red);word-break:break-all}
.credits img{width:120px;height:80px;object-fit:cover}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.62);font-size:14px}
.footer-top{border-bottom:1px solid rgba(255,255,255,.08)}
.footer-top .container{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:34px 0}
.footer-top .logo-text strong{color:#fff}
.footer-top .logo-text small{color:rgba(255,255,255,.45)}
.footer-top .hot{display:flex;align-items:center;gap:14px}
.footer-top .hot .ico{font-size:30px;color:var(--gold-2)}
.footer-top .hot small{display:block;font-size:13px}
.footer-top .hot b{font:600 30px/1.2 var(--num);color:#fff}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1.3fr 1.4fr;gap:50px;padding:56px 0 50px}
.footer h4{color:#fff;font-size:16px;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--red)}
.footer li{line-height:2.2}
.footer li a:hover{color:#fff}
.footer .contact li{display:flex;gap:10px;line-height:1.8;margin-bottom:10px}
.footer .contact .ico{color:var(--gold-2);font-size:17px;margin-top:4px}
.footer .cols2{columns:2;column-gap:20px}
.footer-bottom{background:#0d0e12;font-size:13px;color:rgba(255,255,255,.42)}
.footer-bottom .container{display:flex;justify-content:space-between;gap:20px;padding:20px 0;flex-wrap:wrap}
.footer-bottom a{margin-left:18px}
.footer-bottom a:hover{color:#fff}
.float-bar{position:fixed;right:18px;bottom:90px;z-index:60;display:flex;flex-direction:column;gap:1px;box-shadow:var(--shadow)}
.float-bar a{width:64px;height:64px;background:var(--red);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;gap:3px;transition:.2s}
.float-bar a .ico{font-size:22px}
.float-bar a:hover{background:var(--ink)}
.float-bar a:first-child{border-radius:var(--r) var(--r) 0 0}
.float-bar a:last-child{border-radius:0 0 var(--r) var(--r);background:var(--ink-3)}

/* ---------- 滚动渐显 ---------- */
.js .rv{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .rv{opacity:1;transform:none;transition:none}.slide .bg{transition:none}}

/* ---------- 响应式 ---------- */
@media (max-width:1360px){.header-tel{display:none}.nav>.nav-item>a{padding:0 14px}}
@media (max-width:1180px){
  .mfg{grid-template-columns:repeat(3,1fr)}
  .cat-wrap{grid-template-columns:repeat(3,1fr)}
  .cat-feature{grid-row:auto;grid-column:1/-1;min-height:auto}
  .cat-feature .big{margin-top:20px}
  .std ul{grid-template-columns:repeat(2,1fr)}
  .layout .prod-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr}
  .contact-cards{grid-template-columns:1fr 1fr}
}
@media (max-width:1060px){
  .nav-toggle{display:flex}
  .nav{position:absolute;top:100%;left:0;right:0;height:auto;background:#fff;flex-direction:column;border-top:1px solid var(--line);box-shadow:var(--shadow);display:none;max-height:calc(100vh - 88px);overflow:auto}
  .nav.open{display:flex}
  .nav>.nav-item{flex-direction:column}
  .nav>.nav-item>a{padding:0 24px;line-height:54px;border-bottom:1px solid var(--line-2)}
  .nav>.nav-item>a::after{display:none}
  .mega{display:none}
  .calc,.bio,.hon,.intro,.news-wrap,.pd-top,.contact-main,.pay-grid{grid-template-columns:1fr}
  .calc-form{border-right:0;border-bottom:1px solid rgba(255,255,255,.12)}
  .bio{gap:50px}
  .bio-pic img{height:420px}
  .bio-pic .badge{right:16px}
  .intro .pics{height:440px}
  .layout{grid-template-columns:1fr}
  .side{position:static}
  .side-box ul{display:flex;flex-wrap:nowrap;overflow-x:auto;padding:12px;-webkit-overflow-scrolling:touch}
  .side-box ul li{flex:none}
  .side-box ul li a{white-space:nowrap}
  .side-box h3{padding:14px 18px;font-size:17px}
  body[data-page=product] .side{display:none}
  .side-box ul li a{border:1px solid var(--line);margin:4px;padding:6px 14px}
  .side-tel{display:none}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:1fr 1fr}
  .summary{position:static}
  .case-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  body{font-size:15px}
  .container{width:calc(100% - 32px)}
  .demo-bar{font-size:12px;padding:6px 12px}
  .topbar{display:none}
  .header .container{height:68px;gap:12px}
  .nav{max-height:calc(100vh - 68px)}
  .subnav,.pd-tabs{top:68px}
  .logo svg{width:40px;height:40px}
  .logo-text strong{font-size:17px}
  .logo-text small{display:none}
  .hero{height:600px}
  .slide .container{padding-bottom:150px}
  .slide h1,.slide h2{font-size:30px;letter-spacing:1px;margin:16px 0 14px}
  .slide p.lead{font-size:15px}
  .slide .btns{margin-top:24px}
  .slide .btn{height:46px;padding:0 20px;font-size:15px}
  .hero-ctrl{display:none}
  .hero-bar .container{grid-template-columns:1fr 1fr;width:100%}
  .hero-bar .q{padding:14px 14px;gap:10px;border-right:0!important;border-bottom:1px solid rgba(255,255,255,.08)}
  .hero-bar .q .ico{font-size:24px}
  .hero-bar .q b{font-size:13.5px}
  .hero-bar .q small{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:26px 18px;border-bottom:1px solid var(--line-2)}
  .stat::before{left:18px}
  .stat b{font-size:38px}
  .stat>span{font-size:13px}
  .section{padding:70px 0}
  .sec-head{margin-bottom:36px}
  .sec-head h2{font-size:28px}
  .sec-head.left{display:block}
  .cat-wrap{grid-template-columns:1fr 1fr}
  .cat-card{padding:22px 18px;min-height:0}
  .cat-card .go{display:none}
  .cat-card h3{font-size:15px}
  .cat-card p{font-size:12.5px}
  .calc-form,.calc-out{padding:28px 20px}
  .seg{flex-wrap:wrap}
  .seg label{flex:1 1 40%;border-bottom:1px solid rgba(255,255,255,.18)}
  .calc-main .s{display:none}
  .calc-out .actions{flex-direction:column}
  .calc-row{grid-template-columns:1fr 1fr;gap:12px}
  .calc-main .v{font-size:58px}
  .calc-kv b{font-size:20px}
  .bio h2{font-size:28px}
  .bio-pic::before{display:none}
  .chip{min-width:0;flex:1 1 40%}
  .mfg{grid-template-columns:1fr 1fr;gap:12px}
  .mfg-item .ph{height:120px}
  .mfg-item .t{padding:14px}
  .std{grid-template-columns:1fr}
  .std ul{grid-template-columns:1fr}
  .qual-list,.honors{grid-template-columns:1fr}
  .prod-grid,.layout .prod-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr;grid-auto-rows:240px}
  .case.big{grid-column:auto;grid-row:auto}
  .case.big .cap h4{font-size:20px}
  .case.big .cap .cap-num{font-size:30px}
  .news-feature .ph{height:210px}
  .cta .container{flex-direction:column;align-items:flex-start;padding:54px 0}
  .cta h2{font-size:24px}
  .cta .tel b{font-size:30px}
  .banner{height:260px}
  .banner h1{font-size:32px}
  .banner .container{padding-bottom:32px}
  .intro .pics{height:320px}
  .intro .txt h2{font-size:26px}
  .values{grid-template-columns:1fr}
  .toolbar{flex-direction:column;align-items:stretch}
  .search{width:100%}
  .feat-list{grid-template-columns:1fr}
  .params th{width:120px}
  .pd-tabs{overflow-x:auto}
  .pd-tabs a{padding:0 16px;white-space:nowrap}
  .contact-cards{grid-template-columns:1fr}
  .c-info,.form-box{padding:32px 22px}
  .form-grid{grid-template-columns:1fr}
  .panel{padding:26px 20px}
  .paytype{grid-template-columns:1fr}
  .pay-steps li{flex-direction:column;gap:4px;font-size:13px}
  .pay-help{grid-template-columns:1fr}
  .receipt{padding:34px 20px}
  .receipt .stamp{right:14px;top:14px;width:80px;height:80px;font-size:12px}
  .footer-top .container{flex-direction:column;align-items:flex-start}
  .footer-main{grid-template-columns:1fr;gap:34px}
  .float-bar{right:0;left:0;bottom:0;flex-direction:row;gap:0}
  .float-bar a{flex:1;height:56px;border-radius:0!important}
  body{padding-bottom:56px}
}
@media print{
  .demo-bar,.topbar,.header,.footer,.float-bar,.banner,.pay-steps,.no-print{display:none!important}
  .receipt{border:0}
}
.calc-row[hidden]{display:none}