/* =========================================================
   大将军瓷砖 · 丹阳门店官网
   高端简约 · 深灰(#1c1c1c) + 金(#c5a35a) · 瓷砖质感
   适配 手机 + 电脑 · 纯 HTML+CSS+JS
   ========================================================= */
:root{
  --ink:#1c1c1c;          /* 主深灰 */
  --ink-2:#2a2a2a;
  --ink-3:#3a3a3a;
  --gold:#c5a35a;         /* 主金 */
  --gold-2:#d9bd83;
  --gold-soft:rgba(197,163,90,.14);
  --paper:#ffffff;
  --sand:#f7f6f4;        /* 浅底 */
  --sand-2:#efece7;
  --muted:#6f6f6f;
  --muted-2:#9a9a9a;
  --line:#e7e3db;
  --line-dark:rgba(255,255,255,.12);
  --shadow:0 22px 60px rgba(20,20,20,.10);
  --shadow-sm:0 10px 30px rgba(20,20,20,.07);
  --radius:14px;
  --radius-lg:24px;
  --maxw:1240px;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.78;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--sand{background:var(--sand);}
.section--dark{background:var(--ink);color:#fff;}
.section-head{margin-bottom:56px;}
.center{text-align:center;}
.center .section-sub{margin-left:auto;margin-right:auto;}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.32em;color:var(--gold);font-weight:600;text-transform:uppercase;margin-bottom:16px;}
.section-title{font-family:var(--serif);font-size:clamp(27px,4vw,42px);font-weight:700;letter-spacing:.04em;line-height:1.3;}
.section-sub{color:var(--muted);margin-top:14px;max-width:760px;font-size:15px;}
.gold{color:var(--gold);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:transform .25s,background .25s,color .25s,box-shadow .25s;}
.btn--gold{background:var(--gold);color:#1c1c1c;box-shadow:0 12px 30px rgba(197,163,90,.32);}
.btn--gold:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn--ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn--ghost:hover{background:#fff;color:var(--ink);}
.btn--ink{background:var(--ink);color:#fff;}
.btn--ink:hover{background:var(--gold);color:#1c1c1c;transform:translateY(-2px);}
.btn--outline{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn--outline:hover{background:var(--ink);color:#fff;}
.btn--block{width:100%;justify-content:center;}

/* ---------- 顶部导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;padding:22px 0;transition:background .35s,box-shadow .35s,padding .35s;background:rgba(28,28,28,0);}
.site-header.scrolled{background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(12px);box-shadow:0 1px 0 var(--line);padding:14px 0;}
.nav{display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{width:44px;height:44px;border-radius:11px;background:linear-gradient(135deg,var(--ink-2),#000);color:var(--gold-2);display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:21px;border:1px solid rgba(197,163,90,.5);}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:.05em;color:#fff;line-height:1.1;}
.site-header.scrolled .brand-name{color:var(--ink);}
.brand-name small{display:block;font-family:var(--sans);font-size:10px;letter-spacing:.32em;color:var(--muted-2);font-weight:400;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{font-size:15px;color:rgba(255,255,255,.9);position:relative;padding:4px 0;transition:color .3s;}
.site-header.scrolled .nav-links a{color:var(--ink);}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--gold);transition:width .3s;}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-links a.active{color:var(--gold);}
.nav-cta{background:var(--gold);color:#1c1c1c!important;padding:11px 22px!important;border-radius:999px;font-size:14px!important;font-weight:700;letter-spacing:.04em;}
.nav-cta:hover{background:#fff;}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px;}
.hamburger span{width:26px;height:2px;background:#fff;transition:.3s;}
.site-header.scrolled .hamburger span{background:var(--ink);}

/* ---------- 轮播 Banner ---------- */
.banner{position:relative;height:clamp(560px,86vh,820px);overflow:hidden;background:var(--ink);}
.slides{display:flex;height:100%;transition:transform .7s cubic-bezier(.7,0,.2,1);}
.slide{min-width:100%;height:100%;position:relative;display:flex;align-items:center;color:#fff;overflow:hidden;}
.slide__bg{position:absolute;inset:0;}
/* 三张 banner 占位底纹，可替换为实拍图 */
.slide__bg--1{background:radial-gradient(1000px 520px at 78% 22%,rgba(197,163,90,.28),transparent 60%),linear-gradient(155deg,#151515,#2c2c2c 60%,#161616);}
.slide__bg--2{background:radial-gradient(900px 500px at 22% 30%,rgba(197,163,90,.22),transparent 60%),linear-gradient(155deg,#1a1a1a,#333 70%);}
.slide__bg--3{background:radial-gradient(1000px 520px at 70% 70%,rgba(197,163,90,.3),transparent 60%),linear-gradient(155deg,#101010,#2a2a2a 55%,#141414);}
.slide__tiles{position:absolute;inset:0;opacity:.5;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:84px 84px;mask-image:radial-gradient(circle at 72% 40%,#000,transparent 72%);}
.slide__inner{position:relative;z-index:2;max-width:780px;}
.slide .eyebrow{color:var(--gold-2);}
.slide h1{font-family:var(--serif);font-size:clamp(36px,6.2vw,70px);line-height:1.12;letter-spacing:.05em;font-weight:700;}
.slide h1 .accent{color:var(--gold-2);}
.slide p.lead{margin-top:22px;font-size:clamp(16px,2vw,19px);color:rgba(255,255,255,.84);max-width:600px;}
.slide__actions{margin-top:36px;display:flex;gap:16px;flex-wrap:wrap;}
.banner__arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:20px;cursor:pointer;display:grid;place-items:center;backdrop-filter:blur(4px);transition:background .3s;}
.banner__arrow:hover{background:var(--gold);color:#1c1c1c;}
.banner__arrow--prev{left:24px;}
.banner__arrow--next{right:24px;}
.banner__dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:5;display:flex;gap:10px;}
.banner__dots button{width:30px;height:4px;border-radius:3px;background:rgba(255,255,255,.35);border:0;cursor:pointer;transition:background .3s,width .3s;}
.banner__dots button.active{background:var(--gold);width:46px;}

/* ---------- 占位图（所有图片预留替换位） ---------- */
.ph{position:relative;overflow:hidden;background:
  repeating-linear-gradient(45deg,var(--sand-2) 0 26px,var(--sand) 26px 52px);
  border:1px solid var(--line);display:grid;place-items:center;}
.ph--dark{background:repeating-linear-gradient(45deg,#232323 0 26px,#1c1c1c 26px 52px);border-color:var(--line-dark);}
.ph::after{content:attr(data-label);position:absolute;font-family:var(--serif);letter-spacing:.18em;color:var(--muted-2);font-size:14px;text-align:center;padding:0 12px;}
.ph--dark::after{color:rgba(255,255,255,.45);}
.ph--tile{background-image:linear-gradient(rgba(197,163,90,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(197,163,90,.18) 1px,transparent 1px);background-size:40px 40px;background-color:#1c1c1c;}
.card__media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 核心优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.adv-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;transition:transform .3s,box-shadow .3s,border-color .3s;}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--gold);}
.adv-card__ico{width:54px;height:54px;border-radius:14px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-size:24px;margin-bottom:18px;}
.adv-card h3{font-family:var(--serif);font-size:19px;margin-bottom:10px;letter-spacing:.03em;}
.adv-card p{color:var(--muted);font-size:14px;}

/* ---------- 卡片网格（产品/案例） ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s;}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.card__media{height:230px;}
.card__body{padding:22px 22px 26px;}
.card__tag{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--gold);border:1px solid var(--gold);border-radius:999px;padding:3px 12px;margin-bottom:10px;}
.card h3{font-family:var(--serif);font-size:19px;margin-bottom:8px;}
.card p{color:var(--muted);font-size:14px;}
.card__meta{display:flex;gap:18px;margin-top:14px;flex-wrap:wrap;}
.card__meta span{font-size:13px;color:var(--ink-3);}
.card__meta span b{color:var(--gold);font-weight:700;}
.card__foot{margin-top:18px;}
.product-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0 4px;}
.product-gallery .thumb{height:64px;border-radius:8px;object-fit:cover;cursor:pointer;border:1px solid var(--line);transition:transform .2s,border-color .2s;}
.product-gallery .thumb:hover{transform:scale(1.03);border-color:var(--gold);}

/* ---------- 品牌背书 ---------- */
.endorse{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;}
.endorse__badges{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.badge{background:var(--ink-2);border:1px solid var(--line-dark);border-radius:var(--radius);padding:22px;text-align:center;}
.badge .b-ico{font-size:26px;color:var(--gold-2);}
.badge .b-name{font-family:var(--serif);font-size:15px;margin-top:8px;letter-spacing:.04em;}
.badge .b-sub{font-size:12px;color:var(--muted-2);margin-top:4px;}

/* ---------- 门店引流 ---------- */
.store-cta{background:linear-gradient(135deg,var(--ink),#333);color:#fff;border-radius:var(--radius-lg);padding:60px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.store-cta h2{font-family:var(--serif);font-size:clamp(24px,3.4vw,34px);letter-spacing:.04em;}
.store-cta p{color:rgba(255,255,255,.76);margin-top:10px;}
.store-cta__info{display:flex;gap:30px;flex-wrap:wrap;margin-top:18px;}
.store-cta__info div{font-size:14px;color:rgba(255,255,255,.82);}
.store-cta__info b{display:block;color:var(--gold-2);font-size:13px;letter-spacing:.1em;margin-bottom:4px;font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{background:#121212;color:rgba(255,255,255,.7);padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{font-size:14px;margin-top:16px;max-width:330px;}
.footer-col h5{color:#fff;font-size:14px;letter-spacing:.12em;margin-bottom:18px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.62);display:block;margin-bottom:10px;transition:color .25s;}
.footer-col a:hover{color:var(--gold-2);}
.footer-qr{width:120px;height:120px;border-radius:12px;margin-top:6px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45);}

/* ---------- 产品中心：分类标签 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:48px;}
.tab{padding:11px 24px;border:1px solid var(--line);border-radius:999px;font-size:15px;cursor:pointer;background:var(--paper);transition:.25s;color:var(--ink);}
.tab:hover{border-color:var(--gold);color:var(--gold);}
.tab.active{background:var(--ink);color:#fff;border-color:var(--ink);}
.tab-panel{display:none;}
.tab-panel.active{display:block;animation:fade .4s ease;}
@keyframes fade{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
.panel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ---------- 悬浮获取报价按钮 ---------- */
.float-quote{position:fixed;left:0;right:0;bottom:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 -8px 30px rgba(20,20,20,.08);padding:14px 0;display:flex;}
.float-quote .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.float-quote .fq-text{font-size:14px;color:var(--ink);}
.float-quote .fq-text b{color:var(--gold);}

/* ---------- 实景案例：筛选 + 案例详情 ---------- */
.filter{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px;}
.filter button{padding:9px 20px;border:1px solid var(--line);border-radius:999px;font-size:14px;background:var(--paper);cursor:pointer;transition:.25s;}
.filter button:hover{border-color:var(--gold);color:var(--gold);}
.filter button.active{background:var(--gold);color:#1c1c1c;border-color:var(--gold);font-weight:600;}
.case{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:36px;}
.case__hero{height:380px;}
.case__head{padding:26px 30px 8px;display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:16px;}
.case__title{font-family:var(--serif);font-size:24px;letter-spacing:.03em;}
.case__local{display:inline-block;font-size:12px;letter-spacing:.1em;color:#fff;background:var(--gold);border-radius:999px;padding:4px 12px;}
.case__tags{display:flex;gap:14px;flex-wrap:wrap;margin-top:12px;}
.case__tags span{font-size:13px;color:var(--muted);}
.case__tags span b{color:var(--ink-3);font-weight:600;}
.case__imgs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:18px 30px 0;}
.case__imgs .ph{height:150px;border-radius:10px;}
.case__desc{padding:20px 30px 30px;color:var(--muted);font-size:14px;border-top:1px solid var(--line);margin:20px 30px 0;}

/* ---------- 关于我们 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split--rev{direction:rtl;}
.split--rev>*{direction:ltr;}
.split__media{height:420px;border-radius:var(--radius-lg);overflow:hidden;}
.split__media img{width:100%;height:100%;object-fit:cover;display:block;}
.split__media iframe{width:100%;height:100%;border:0;display:block;background:#ededed;}
.split__media--pano{position:relative;}
.pano-tag{position:absolute;left:14px;bottom:14px;z-index:2;background:rgba(20,20,20,.66);color:#fff;font-size:12px;letter-spacing:.04em;padding:7px 14px;border-radius:20px;backdrop-filter:blur(4px);}
.split h2{font-family:var(--serif);font-size:clamp(24px,3.4vw,34px);letter-spacing:.04em;margin-bottom:16px;}
.split p{color:var(--muted);margin-bottom:14px;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px;}
.stat-box{background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center;}
.stat-box .n{font-family:var(--serif);font-size:30px;color:var(--gold);font-weight:700;}
.stat-box .t{font-size:13px;color:var(--muted);margin-top:6px;}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:10px;}
.team-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;}
.team-card .ph{width:84px;height:84px;border-radius:50%;margin:0 auto 16px;}
.team-card img{width:84px;height:84px;border-radius:50%;object-fit:cover;margin:0 auto 16px;display:block;}
.team-card h4{font-family:var(--serif);font-size:17px;}
.team-card p{color:var(--muted);font-size:13px;margin-top:6px;}

/* ---------- 服务保障 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.svc-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;transition:transform .3s,box-shadow .3s;}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.svc-card__num{font-family:var(--serif);font-size:15px;color:var(--gold);letter-spacing:.1em;}
.svc-card__ico{width:52px;height:52px;border-radius:14px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-size:24px;margin:10px 0 16px;}
.svc-card h3{font-family:var(--serif);font-size:19px;margin-bottom:10px;}
.svc-card p{color:var(--muted);font-size:14px;}
.promise{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:46px 50px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:48px;}
.promise .p-ico{font-size:40px;color:var(--gold-2);}
.promise h3{font-family:var(--serif);font-size:22px;}
.promise p{color:rgba(255,255,255,.78);margin-top:6px;font-size:14px;}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.info-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
.info-list .ico{flex:none;width:44px;height:44px;border-radius:12px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-size:20px;}
.info-list .t{font-size:13px;color:var(--muted);letter-spacing:.08em;}
.info-list .v{font-size:16px;font-weight:600;}
.welfare{background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin-top:22px;}
.welfare h4{font-family:var(--serif);font-size:16px;margin-bottom:8px;color:var(--gold);}
.welfare p{font-size:14px;color:var(--muted);}
.nav-btn{display:inline-flex;align-items:center;gap:8px;margin-top:18px;background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;border:0;transition:.25s;}
.nav-btn:hover{background:var(--gold);color:#1c1c1c;}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 34px;box-shadow:var(--shadow-sm);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;margin-bottom:8px;font-weight:600;}
.field label .opt{color:var(--muted);font-weight:400;font-size:13px;margin-left:4px;}
.field input,.field textarea,.field select{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:var(--sans);background:var(--sand);transition:border-color .25s,background .25s;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);background:#fff;}
.field textarea{resize:vertical;min-height:110px;}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;}
.form-ok{display:none;background:var(--gold-soft);color:#8a6d2f;border:1px solid var(--gold);border-radius:10px;padding:14px 16px;font-size:14px;margin-bottom:18px;}
.form-ok.show{display:block;}
.qr-block{display:flex;gap:18px;align-items:center;margin-top:22px;}
.qr-block .ph{width:120px;height:120px;border-radius:12px;flex:none;}
.qr-block p{font-size:14px;color:var(--muted);}

/* ---------- 全站移动端悬浮按钮 ---------- */
.float-actions{position:fixed;right:18px;bottom:86px;z-index:90;display:flex;flex-direction:column;gap:14px;}
.float-actions a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:22px;box-shadow:var(--shadow-sm);transition:transform .25s;}
.float-actions a:hover{transform:scale(1.08);}
.fa-phone{background:var(--gold);}
.fa-wechat{background:#2dc100;}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:18px;bottom:18px;z-index:90;width:46px;height:46px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;box-shadow:var(--shadow-sm);}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--gold);transform:translateY(-3px);}

/* ---------- 页面头（内页） ---------- */
.page-hero{padding:178px 0 78px;color:#fff;position:relative;overflow:hidden;background:linear-gradient(155deg,#161616,#2a2a2a);}
.page-hero__tiles{position:absolute;inset:0;opacity:.35;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:72px 72px;mask-image:radial-gradient(circle at 75% 30%,#000,transparent 70%);}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-family:var(--serif);font-size:clamp(32px,5vw,56px);letter-spacing:.05em;}
.page-hero p{margin-top:16px;color:rgba(255,255,255,.8);max-width:660px;}

/* ---------- 动画 ---------- */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}

/* ---------- 响应式 ---------- */
@media(max-width:1100px){
  .adv-grid,.svc-grid,.panel-grid,.card-grid,.team-grid{grid-template-columns:repeat(2,1fr);}
  .case__imgs{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:860px){
  .section{padding:64px 0;}
  .endorse,.split,.contact-grid{grid-template-columns:1fr;gap:32px;}
  .split--rev{direction:ltr;}
  .store-cta,.cta-band,.promise{padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-row{grid-template-columns:repeat(3,1fr);}
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:80%;max-width:340px;background:var(--ink);flex-direction:column;justify-content:center;gap:26px;transform:translateX(100%);transition:transform .35s;padding:40px;}
  .site-header.scrolled .nav-links a,.nav-links a{color:#fff;}
  .nav-links.open{transform:translateX(0);}
  .nav-cta{display:none;}
  .hamburger{display:flex;z-index:110;}
  .float-quote{display:block;}
}
@media(max-width:560px){
  .split__media--pano{height:320px;}
  .adv-grid,.svc-grid,.panel-grid,.card-grid,.team-grid,.case__imgs{grid-template-columns:1fr;}
  .case__imgs{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .case__head{padding:22px 20px 6px;}
  .case__imgs,.case__desc{padding-left:20px;padding-right:20px;}
  .case__desc{margin-left:20px;margin-right:20px;}
  .slide__actions .btn{flex:1;justify-content:center;}
  .banner__arrow{display:none;}
  .product-gallery .thumb{height:54px;}
}

/* ---------- 图片灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(10,10,10,.94);display:none;align-items:center;justify-content:center;padding:40px 20px;}
.lightbox.show{display:flex;}
.lightbox img{max-width:100%;max-height:90vh;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.5);}
.lightbox__close{position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:50%;background:#fff;color:var(--ink);font-size:28px;border:0;cursor:pointer;display:grid;place-items:center;transition:background .25s;}
.lightbox__close:hover{background:var(--gold);}