/* ============ 基础与变量 ============ */
:root{
  --deep-rgb:8,24,38;
  --gold-rgb:200,162,75;
  --navy-900:#081826;
  --navy-800:#0F2A43;
  --navy-700:#16395A;
  --navy-600:#1E4A73;
  --gold-600:#A9863A;
  --gold-500:#C8A24B;
  --gold-400:#D9BA6E;
  --cream-50:#F7F5F0;
  --cream-100:#EFEBE1;
  --ink:#1F2A36;
  --muted:#5C6773;
  --line:#E3DFD3;
  --white:#FFFFFF;
  --font-serif:"Noto Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --shadow-card:0 2px 10px rgba(var(--deep-rgb),.08);
  --shadow-lift:0 12px 32px rgba(var(--deep-rgb),.16);
  --radius:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--ink);background:var(--cream-50);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:58px 0}
.section-tight{padding:56px 0}

/* ============ 通用组件 ============ */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.22em;color:var(--gold-600);font-weight:700;text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold-500)}
.section-title{font-family:var(--font-serif);font-weight:900;font-size:clamp(26px,3.4vw,40px);color:var(--navy-800);line-height:1.25;margin:14px 0 12px}
.section-lead{color:var(--muted);max-width:720px;font-size:16px}
.center{text-align:center}
.center .section-lead{margin-left:auto;margin-right:auto}
.center .eyebrow::before{display:none}
.center .eyebrow{justify-content:center}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:6px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:all .25s;font-family:var(--font-sans)}
.btn-gold{background:var(--gold-500);color:var(--navy-900)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px);box-shadow:var(--shadow-lift)}
.btn-outline{background:transparent;color:var(--white);border:1px solid rgba(255,255,255,.55)}
.btn-outline:hover{border-color:var(--gold-400);color:var(--gold-400)}
.btn-navy{background:var(--navy-800);color:var(--white)}
.btn-navy:hover{background:var(--navy-700);transform:translateY(-2px);box-shadow:var(--shadow-lift)}

.page-banner{background:var(--navy-800);color:var(--white);padding:96px 0 64px;position:relative;overflow:hidden}
.page-banner::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 300px at 85% -20%,rgba(var(--gold-rgb),.28),transparent 60%)}
.page-banner .container{position:relative;z-index:1}
.page-banner h1{font-family:var(--font-serif);font-weight:900;font-size:clamp(28px,4vw,46px)}
.page-banner .crumb{margin-top:14px;font-size:14px;color:rgba(255,255,255,.65)}
.page-banner .crumb b{color:var(--gold-400);font-weight:700}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(var(--deep-rgb),.82);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);transition:background .3s}
.site-header.scrolled{background:rgba(var(--deep-rgb),.96);box-shadow:0 4px 24px rgba(0,0,0,.25)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px;color:var(--white)}
.brand-mark{width:42px;height:42px;flex:none}
.brand-name{display:flex;flex-direction:column;line-height:1.15}
.brand-logo{font-family:var(--font-serif);font-weight:900;font-size:22px;letter-spacing:.06em;line-height:1.2;color:var(--white);white-space:nowrap}
.brand-logo em{font-style:normal;color:var(--gold-400)}
.brand-name-en .brand-logo{font-size:13px;font-weight:700;letter-spacing:.01em;line-height:1.2;white-space:nowrap}
.footer-brand .brand-logo{font-size:17px;letter-spacing:.04em}
.brand-sub{font-size:10.5px;letter-spacing:.28em;color:var(--white);text-transform:uppercase;margin-top:2px}
.nav-list{display:flex;gap:4px}
.nav-list a{padding:9px 15px;color:rgba(255,255,255,.82);font-size:15px;font-weight:500;border-radius:6px;transition:all .2s;position:relative}
.nav-list a:hover{color:var(--white);background:rgba(255,255,255,.08)}
.nav-list a.active{color:var(--gold-400);background:rgba(var(--gold-rgb),.14)}
.nav-cta{margin-left:14px}
.nav-burger{display:none;background:none;border:none;cursor:pointer;width:42px;height:42px;position:relative}
.nav-burger span{display:block;width:22px;height:2px;background:var(--white);margin:5px auto;transition:all .3s;border-radius:2px}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 视图切换 ============ */
.view{display:none}
.view.active{display:block;animation:viewIn .45s ease}
@keyframes viewIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ============ 首页 Hero ============ */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:var(--white);overflow:hidden;background:var(--navy-900)}
.hero-bg{position:absolute;inset:0;background:url('../assets/hero-spinning.jpg') center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(var(--deep-rgb),.94) 0%,rgba(var(--deep-rgb),.72) 42%,rgba(var(--deep-rgb),.30) 78%,rgba(var(--deep-rgb),.55) 100%)}
.hero-inner{position:relative;z-index:2;padding:130px 0 110px;width:100%}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border:1px solid rgba(var(--gold-rgb),.5);border-radius:40px;color:var(--gold-400);font-size:13px;letter-spacing:.14em;margin-bottom:26px;background:rgba(var(--deep-rgb),.45)}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--gold-400);display:inline-block}
.hero h1{font-family:var(--font-serif);font-weight:900;font-size:clamp(34px,5.4vw,62px);line-height:1.18;max-width:760px}
.hero h1 .accent{color:var(--gold-400)}
.hero-sub{margin-top:22px;font-size:17px;color:rgba(255,255,255,.82);max-width:600px;font-weight:300}
.hero-actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{margin-top:64px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:820px}
.hero-meta .hm{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:16px 20px;backdrop-filter:blur(4px)}
.hero-meta .hm b{display:block;font-family:var(--font-serif);font-size:19px;color:var(--gold-400);margin-bottom:4px}
.hero-meta .hm span{font-size:13.5px;color:rgba(255,255,255,.78)}

/* ============ 首页 简介条 ============ */
.intro-strip{background:var(--white);border-bottom:1px solid var(--line)}
.intro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding:40px 0}
.intro-item{display:flex;gap:16px;align-items:flex-start}
.intro-item .ico{flex:none;width:46px;height:46px;border-radius:10px;background:var(--cream-100);display:flex;align-items:center;justify-content:center}
.intro-item h3{font-family:var(--font-serif);font-size:17px;color:var(--navy-800);margin-bottom:5px}
.intro-item p{font-size:14px;color:var(--muted)}

/* ============ 三大工艺 ============ */
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.process-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:all .3s}
.process-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:var(--gold-500)}
.process-card .pc-img{height:210px;overflow:hidden;position:relative}
.process-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.process-card:hover .pc-img img{transform:scale(1.06)}
.process-card .pc-num{position:absolute;top:14px;left:14px;background:var(--navy-800);color:var(--gold-400);font-family:var(--font-serif);font-weight:700;font-size:14px;padding:5px 12px;border-radius:4px;letter-spacing:.06em}
.process-card .pc-body{padding:24px 24px 26px}
.process-card h3{font-family:var(--font-serif);font-size:20px;color:var(--navy-800);margin-bottom:8px}
.process-card p{font-size:14.5px;color:var(--muted)}
.process-card .pc-tag{display:inline-block;margin-top:14px;font-size:12.5px;color:var(--gold-600);border:1px solid var(--gold-500);border-radius:30px;padding:3px 12px}

/* ============ 产品预览卡片 ============ */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.pcard{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:all .3s;cursor:pointer}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:var(--gold-500)}
.pcard .pimg{height:230px;overflow:hidden}
.pcard .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pcard:hover .pimg img{transform:scale(1.05)}
.pcard .pbody{padding:22px 24px 26px}
.pcard h3{font-family:var(--font-serif);font-size:19px;color:var(--navy-800);margin-bottom:6px}
.pcard h4{font-family:var(--font-serif);font-size:14px;color:var(--gold-600);margin-bottom:6px}
.pcard p{font-size:14px;color:var(--muted)}
.pcard .pmore{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13.5px;font-weight:700;color:var(--gold-600)}
.pcard .pmore svg{transition:transform .2s}
.pcard:hover .pmore svg{transform:translateX(4px)}

/* ============ 品质条 ============ */
.quality-band{background:var(--navy-800);color:var(--white);position:relative;overflow:hidden}
.quality-band::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 260px at 15% 0%,rgba(var(--gold-rgb),.16),transparent 55%)}
.quality-band .container{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.quality-band h2{font-family:var(--font-serif);font-weight:900;font-size:clamp(24px,3vw,34px);line-height:1.3}
.quality-band h2 em{font-style:normal;color:var(--gold-400)}
.quality-band p{margin-top:14px;color:rgba(255,255,255,.75)}
.q-points{margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.q-points li{display:flex;gap:10px;align-items:center;font-size:14.5px;color:rgba(255,255,255,.9)}
.q-points svg{flex:none;color:var(--gold-400)}
.quality-band .btn{margin-top:30px}

/* ============ CTA 条 ============ */
.cta-band{background:linear-gradient(120deg,var(--navy-900),var(--navy-700));color:var(--white);text-align:center;padding:72px 0;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 200px at 80% 0%,rgba(var(--gold-rgb),.18),transparent 55%)}
.cta-band .container{position:relative}
.cta-band h2{font-family:var(--font-serif);font-weight:900;font-size:clamp(24px,3.4vw,38px)}
.cta-band p{color:rgba(255,255,255,.7);margin-top:12px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-band .btn{margin-top:30px}

/* ============ 关于我们 ============ */
.about-intro{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about-intro .ai-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);position:relative}
.about-intro .ai-img img{width:100%;height:100%;object-fit:cover}
.about-intro .ai-img::after{content:"";position:absolute;inset:0;border:1px solid rgba(var(--gold-rgb),.4);border-radius:var(--radius);pointer-events:none}
.about-intro h3{font-family:var(--font-serif);font-size:22px;color:var(--navy-800);margin:18px 0 12px}
.about-intro p{color:var(--muted);font-size:15.5px;margin-bottom:12px}
.about-intro .stat-line{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
.about-intro .stat b{display:block;font-family:var(--font-serif);font-size:26px;color:var(--navy-800)}
.about-intro .stat span{font-size:13px;color:var(--muted)}

.brand-story{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.story-grid h3{font-family:var(--font-serif);font-size:18px;color:var(--navy-800);display:flex;align-items:center;gap:10px;margin-bottom:10px}
.story-grid h3 .dot{width:8px;height:8px;border-radius:2px;background:var(--gold-500);flex:none}
.story-grid p{font-size:14.5px;color:var(--muted)}

/* ============ 时间轴 ============ */
.timeline{display:grid;grid-template-columns:110px 1fr;gap:0;margin-top:48px;position:relative}
.timeline::before{content:"";position:absolute;left:110px;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl-item{display:contents}
.tl-year{grid-column:1;padding:20px 22px 20px 0;text-align:right;font-family:var(--font-serif);font-weight:700;color:var(--gold-600);font-size:15px}
.tl-node{grid-column:2;padding:20px 0 20px 34px;position:relative}
.tl-node::before{content:"";position:absolute;left:-6px;top:29px;width:14px;height:14px;border-radius:50%;background:var(--gold-500);border:3px solid var(--cream-50);box-shadow:0 0 0 2px var(--gold-500)}
.tl-node h4{font-family:var(--font-serif);font-size:17px;color:var(--navy-800)}
.tl-node p{font-size:14px;color:var(--muted);margin-top:4px}
.tl-placeholder{border:1px dashed var(--gold-500);border-radius:6px;padding:3px 8px;display:inline-block;font-size:12px;color:var(--gold-600);margin-top:8px}

/* ============ 产品中心 ============ */
.cat-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-top:36px}
.cat-tabs span{padding:9px 20px;border:1px solid var(--line);border-radius:30px;font-size:14px;color:var(--muted);cursor:pointer;transition:all .2s;background:var(--white)}
.cat-tabs span.on{background:var(--navy-800);color:var(--white);border-color:var(--navy-800)}
.cat-tabs span.dim{opacity:.55}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:40px}
.product-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:all .3s}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:var(--gold-500)}
.product-card .pimg{height:250px;overflow:hidden;position:relative}
.product-card .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product-card:hover .pimg img{transform:scale(1.05)}
.product-card .pbadge{position:absolute;top:14px;right:14px;background:rgba(var(--deep-rgb),.82);color:var(--gold-400);font-size:12px;padding:4px 12px;border-radius:4px;letter-spacing:.08em}
.product-card .pbody{padding:24px 26px 28px}
.product-card h3{font-family:var(--font-serif);font-size:21px;color:var(--navy-800);margin-bottom:8px}
.product-card h4{font-family:var(--font-serif);font-size:16px;color:var(--gold-500);margin-bottom:8px}
.product-card .pdesc{font-size:14.5px;color:var(--muted)}
.product-card .pfeat{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.product-card .pfeat i{font-style:normal;font-size:12.5px;color:var(--navy-700);background:var(--cream-100);padding:4px 12px;border-radius:30px}
.product-note{margin-top:36px;background:var(--white);border:1px dashed var(--gold-500);border-radius:var(--radius);padding:22px 28px;display:flex;gap:16px;align-items:flex-start;color:var(--muted);font-size:14.5px}
.product-note svg{flex:none;color:var(--gold-600);margin-top:2px}

/* ============ 生产设备 ============ */
.equip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px}
.equip-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:all .3s}
.equip-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:var(--gold-500)}
.equip-card .eimg{height:240px;overflow:hidden;position:relative}
.equip-card .eimg img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.equip-card:hover .eimg img{transform:scale(1.05)}
.equip-card .estage{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(var(--deep-rgb),.85));color:var(--gold-400);font-size:12px;letter-spacing:.12em;padding:26px 18px 10px}
.equip-card .ebody{padding:24px 26px 28px}
.equip-card h3{font-family:var(--font-serif);font-size:20px;color:var(--navy-800);margin-bottom:8px}
.equip-card p{font-size:14.5px;color:var(--muted)}
.equip-card .echips{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.equip-card .echips i{font-style:normal;font-size:12.5px;color:var(--gold-600);border:1px solid var(--gold-500);padding:3px 12px;border-radius:30px}

.equip-note{margin-top:40px;background:var(--white);border:1px dashed var(--gold-500);border-radius:var(--radius);padding:20px 28px;display:flex;gap:14px;align-items:flex-start;color:var(--muted);font-size:14.5px}
.equip-note svg{flex:none;color:var(--gold-600);margin-top:2px}

/* ============ 工艺流程步骤条 ============ */
.flow-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:44px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.flow-step{padding:26px 20px;text-align:center;position:relative}
.flow-step + .flow-step::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:44px;background:var(--cream-100)}
.flow-step .fnum{width:40px;height:40px;margin:0 auto 12px;border-radius:50%;background:var(--navy-800);color:var(--gold-400);font-family:var(--font-serif);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:17px}
.flow-step h4{font-family:var(--font-serif);font-size:15.5px;color:var(--navy-800)}
.flow-step p{font-size:12.5px;color:var(--muted);margin-top:5px}

/* ============ 品质管控 ============ */
.quality-intro{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.quality-intro .qi-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card)}
.quality-intro .qi-img img{width:100%;height:100%;object-fit:cover}
.quality-intro h3{font-family:var(--font-serif);font-size:22px;color:var(--navy-800);margin:18px 0 12px}
.quality-intro p{color:var(--muted);font-size:15.5px;margin-bottom:12px}
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.check-item{background:var(--cream-100);border-radius:var(--radius);padding:18px 20px;border-left:3px solid var(--gold-500)}
.check-item b{display:block;font-family:var(--font-serif);font-size:15.5px;color:var(--navy-800)}
.check-item span{font-size:13px;color:var(--muted)}

.qc-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
.qc-step{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;position:relative;transition:all .3s}
.qc-step:hover{border-color:var(--gold-500);box-shadow:var(--shadow-card)}
.qc-step .qnum{font-family:var(--font-serif);font-weight:900;font-size:34px;color:var(--cream-100);line-height:1;margin-bottom:10px}
.qc-step h4{font-family:var(--font-serif);font-size:16.5px;color:var(--navy-800);margin-bottom:6px}
.qc-step p{font-size:13.5px;color:var(--muted)}
.qc-step .qnum{color:var(--gold-500);opacity:.75}

/* ============ 联系我们 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;margin-top:44px;align-items:start}
.contact-info{display:grid;gap:18px}
.contact-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;display:flex;gap:18px;align-items:flex-start;transition:all .25s}
.contact-card:hover{border-color:var(--gold-500);box-shadow:var(--shadow-card)}
.contact-card .cico{flex:none;width:46px;height:46px;border-radius:10px;background:var(--cream-100);display:flex;align-items:center;justify-content:center;color:var(--navy-800)}
.contact-card h4{font-family:var(--font-serif);font-size:16px;color:var(--navy-800);margin-bottom:4px}
.contact-card .cval{font-size:15px;color:var(--ink);word-break:break-all}
.contact-card .cph{font-size:12.5px;color:var(--gold-600);margin-top:3px}
.form-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px}
.form-panel h3{font-family:var(--font-serif);font-size:21px;color:var(--navy-800);margin-bottom:6px}
.form-panel .fp-sub{font-size:14px;color:var(--muted);margin-bottom:26px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13.5px;font-weight:700;color:var(--navy-800);margin-bottom:7px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;font-family:var(--font-sans);font-size:14.5px;color:var(--ink);background:var(--cream-50);transition:border .2s;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--gold-500);background:var(--white)}
.form-group textarea{min-height:120px;resize:vertical}
.map-placeholder{margin-top:26px;background:var(--navy-800);border-radius:var(--radius);color:rgba(255,255,255,.6);text-align:center;padding:44px 20px;font-size:14px;position:relative;overflow:hidden}
.map-placeholder::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 160px at 50% 0%,rgba(var(--gold-rgb),.14),transparent 60%)}
.map-placeholder b{color:var(--gold-400);font-family:var(--font-serif)}
.map-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px}
.map-panel h3{font-family:var(--font-serif);font-size:21px;color:var(--navy-800);margin-bottom:6px}
.map-panel .fp-sub{font-size:14px;color:var(--muted);margin-bottom:18px}
.map-frame-wrap{position:relative;height:440px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--cream-100)}
.map-frame-wrap iframe,.map-frame-wrap img{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.map-frame-wrap img{object-fit:cover}
.map-tip{margin-top:14px;font-size:13px;color:var(--muted);display:flex;align-items:flex-start;gap:8px;line-height:1.5}
.map-open{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--navy-800);background:var(--cream-50);border:1px solid var(--line);padding:9px 16px;border-radius:6px;transition:all .2s}
.map-open:hover{background:var(--navy-800);color:var(--white);border-color:var(--navy-800)}

/* ============ 页脚 ============ */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.68);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{color:rgba(255,255,255,.6);line-height:1.8;max-width:300px}
.footer-col h4{color:var(--white);font-family:var(--font-serif);font-size:16px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--gold-500)}
.footer-col li{margin-bottom:9px}
.footer-col a{transition:color .2s;color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--gold-400)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:11px}
.footer-contact svg{flex:none;color:var(--gold-500);margin-top:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45)}
.footer-icp a{color:rgba(255,255,255,.55);margin-right:14px;font-size:12.5px}

/* ============ Toast ============ */
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%) translateY(80px);background:var(--navy-800);color:var(--white);padding:14px 26px;border-radius:8px;font-size:14.5px;box-shadow:var(--shadow-lift);z-index:300;opacity:0;transition:all .35s;border:1px solid rgba(var(--gold-rgb),.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .process-grid,.preview-grid,.product-grid,.equip-grid{grid-template-columns:repeat(2,1fr)}
  .story-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .quality-band .container,.about-intro,.quality-intro{grid-template-columns:1fr;gap:32px}
  .flow-steps{grid-template-columns:repeat(3,1fr)}
  .flow-step:nth-child(4){border-top:1px solid var(--line)}
  .flow-step:nth-child(5){border-top:1px solid var(--line)}
  .qc-flow{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .brand-logo{font-size:17px;letter-spacing:.04em}
  .brand-name-en .brand-logo{font-size:12px}
  .footer-brand .brand-logo{font-size:15px}
}
@media (max-width:768px){
  .brand-logo{font-size:15px}
  .brand-name-en .brand-logo{font-size:11px}
  .nav-list{position:fixed;top:74px;left:0;right:0;background:var(--navy-900);flex-direction:column;padding:14px 20px 20px;gap:2px;transform:translateY(-120%);transition:transform .35s;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-list.open{transform:translateY(0)}
  .nav-list a{padding:13px 14px;font-size:16px}
  .nav-cta{margin-top:12px;justify-content:center}
  .nav-burger{display:block}
  .section{padding:64px 0}
  .hero{min-height:86vh}
  .hero-meta{grid-template-columns:1fr;max-width:420px}
  .intro-grid{grid-template-columns:1fr;gap:22px}
  .process-grid,.preview-grid,.product-grid,.equip-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:84px 1fr}
  .timeline::before{left:84px}
  .contact-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .flow-steps{grid-template-columns:1fr 1fr}
  .flow-step + .flow-step::before{display:none}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-tag{font-size:14px}
  .hero-meta .hm span{font-size:14px}
  .brand-sub{font-size:12px}
  .form-group input,.form-group select,.form-group textarea{font-size:16px}
  .footer-bottom{justify-content:center;text-align:center}
}
@media (max-width:480px){
  .flow-steps{grid-template-columns:1fr}
  .qc-flow{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .container{padding:0 18px}
}