:root{
  --green:#1F3A35;--green-deep:#162925;--cream:#EFEAE0;--paper:#F6F3EC;
  --ink:#1B2724;--muted:#707A75;--line:rgba(31,58,53,.16);--gold:#B89968;
  --en:'Jost','Noto Sans SC',sans-serif;--cn:'Noto Sans SC','Jost',sans-serif;
  --bg:var(--paper);--bg-alt:var(--cream);--bg-card:#FBF8F1;
  --text:var(--ink);--text-muted:var(--muted);--border:var(--line);
  --accent:var(--green);--accent-deep:var(--green-deep);--accent-inverse:var(--cream);
}
body.dark{
  --bg:var(--green-deep);--bg-alt:var(--green);--bg-card:var(--green);
  --text:var(--cream);--text-muted:rgba(239,234,224,.5);--border:rgba(239,234,224,.12);
  --accent:var(--cream);--accent-deep:var(--paper);--accent-inverse:var(--green-deep);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--cn);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;transition:background .4s,color .4s;}
img{display:block;max-width:100%;}
a{text-decoration:none;color:inherit;}
button{font-family:var(--cn);cursor:pointer;border:none;background:none;}
.wrap{max-width:1200px;margin:0 auto;padding:0 40px;}

/* 导航 */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:24px 40px;display:flex;align-items:center;justify-content:space-between;background:rgba(246,243,236,.85);backdrop-filter:blur(12px);transition:all .3s;}
body.dark .nav{background:rgba(22,41,37,.85);}
.nav-logo{display:flex;align-items:center;gap:12px;cursor:pointer;}
.nav-logo-img{width:44px;height:44px;filter:none;transition:filter .3s;}
/* 亮模式：墨绿色LOGO */
body:not(.dark) .nav-logo-img{filter:invert(12%) sepia(20%) saturate(500%) hue-rotate(140deg) brightness(90%) contrast(95%);}
/* 暗模式：奶白色LOGO */
body.dark .nav-logo-img{filter:brightness(0) invert(1) sepia(10%) saturate(200%) hue-rotate(5deg) brightness(105%);}
.nav-logo-text{display:flex;flex-direction:column;}
.nav-logo-text .en{font-family:var(--en);font-weight:600;font-size:28px;letter-spacing:.06em;color:var(--text);line-height:1;}
.nav-logo-text .cn{font-family:var(--cn);font-size:10px;letter-spacing:.4em;color:var(--text-muted);margin-top:4px;font-weight:400;}
.nav-right{display:flex;align-items:center;gap:32px;}
.nav-links{display:flex;gap:28px;}
.nav-links a{font-family:var(--en);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--text);opacity:.7;transition:opacity .3s;}
.nav-links a:hover{opacity:1;color:var(--gold);}
.theme-toggle{position:relative;width:44px;height:24px;border-radius:12px;background:var(--bg-alt);border:1px solid var(--border);cursor:pointer;transition:all .3s;display:flex;align-items:center;padding:0 3px;}
.theme-toggle::before{content:'';width:18px;height:18px;border-radius:50%;background:var(--accent);transition:all .3s;display:block;}
body.dark .theme-toggle::before{transform:translateX(20px);background:var(--gold);}
.burger{display:flex;flex-direction:column;gap:5px;cursor:pointer;padding:8px;display:none;}
.burger span{width:28px;height:2px;background:var(--text);transition:all .3s;}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;background:var(--green-deep);color:var(--cream);position:relative;overflow:hidden;}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 60% 30%,rgba(184,153,104,.15),transparent 60%);}
.hero-content{position:relative;z-index:1;padding:120px 0 80px;}
.hero-tag{font-family:var(--en);font-size:12px;letter-spacing:.5em;text-transform:uppercase;opacity:.5;margin-bottom:32px;}
.hero h1{font-size:clamp(40px,6vw,80px);font-weight:300;letter-spacing:.08em;line-height:1.2;margin-bottom:24px;}
.hero h1 .accent{color:var(--gold);font-weight:500;}
.hero-en{font-family:var(--en);font-size:clamp(48px,7vw,96px);font-weight:600;letter-spacing:.02em;opacity:.9;margin:10px 0 32px;line-height:1;}
.hero p{font-size:15px;opacity:.6;max-width:520px;margin-bottom:40px;line-height:2;}
.btn{display:inline-flex;align-items:center;gap:10px;padding:16px 36px;font-size:12px;letter-spacing:.25em;font-weight:500;transition:all .3s;cursor:pointer;text-transform:uppercase;}
.btn-primary{background:var(--cream);color:var(--green-deep);}
.btn-primary:hover{background:var(--gold);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--cream);border:1px solid rgba(239,234,224,.3);}
.btn-outline:hover{border-color:var(--gold);color:var(--gold);}

/* 区块 */
section{padding:100px 0;}
.sec-head{margin-bottom:60px;}
.sec-head .label{font-family:var(--en);font-size:11px;letter-spacing:.4em;color:var(--gold);margin-bottom:16px;font-weight:500;}
.sec-head h2{font-size:clamp(28px,4vw,48px);font-weight:300;letter-spacing:.06em;line-height:1.2;color:var(--text);}
.sec-head p{font-size:15px;color:var(--text-muted);max-width:600px;margin-top:20px;line-height:2;}

/* 服务范围 */
.services{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--border);}
.service-item{padding:48px 40px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);transition:background .3s;}
.service-item:hover{background:var(--bg-alt);}
.service-item:nth-child(2n){border-right:none;}
.service-item:nth-last-child(-n+2){border-bottom:none;}
.service-num{font-family:var(--en);font-size:12px;letter-spacing:.3em;color:var(--gold);margin-bottom:16px;}
.service-item h3{font-size:20px;font-weight:400;letter-spacing:.08em;margin-bottom:12px;color:var(--text);}
.service-item p{font-size:14px;color:var(--text-muted);line-height:1.9;}

/* 案例 */
.works-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}
.work-card{overflow:hidden;cursor:pointer;transition:transform .4s;}
.work-card:hover{transform:translateY(-4px);}
.work-img{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);margin-bottom:20px;}
.work-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s;}
.work-card:hover .work-img img{transform:scale(1.05);}
.work-info .cat{font-family:var(--en);font-size:11px;letter-spacing:.3em;color:var(--gold);margin-bottom:8px;}
.work-info h4{font-size:18px;font-weight:400;letter-spacing:.06em;margin-bottom:6px;color:var(--text);}
.work-info p{font-size:13px;color:var(--text-muted);}

/* 设计流程 */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--border);}
.process-step{padding:40px 24px;border-right:1px solid var(--border);}
.process-step:last-child{border-right:none;}
.process-step .num{font-family:var(--en);font-size:48px;font-weight:300;color:var(--gold);opacity:.3;margin-bottom:16px;line-height:1;}
.process-step h4{font-size:16px;font-weight:500;letter-spacing:.08em;margin-bottom:10px;color:var(--text);}
.process-step p{font-size:13px;color:var(--text-muted);line-height:1.8;}

/* 理念区 */
.philosophy{background:var(--green-deep);color:var(--cream);padding:120px 0;}
.philosophy .sec-head h2{color:var(--cream);}
.philosophy .sec-head p{color:rgba(239,234,224,.6);}
.philosophy-text{max-width:800px;margin:40px auto;text-align:center;}
.philosophy-text p{font-size:18px;line-height:2.2;opacity:.8;margin-bottom:20px;}
.philosophy-text .highlight{color:var(--gold);font-size:20px;}

/* 关于 */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.about-img{aspect-ratio:4/5;overflow:hidden;background:var(--bg-alt);}
.about-img img{width:100%;height:100%;object-fit:cover;}
.about-content h3{font-size:24px;font-weight:300;letter-spacing:.08em;margin-bottom:24px;color:var(--text);}
.about-content p{font-size:14px;color:var(--text-muted);line-height:2;margin-bottom:16px;}

/* 联系 */
.contact{background:var(--bg-alt);}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:40px;}
.contact-item h4{font-family:var(--en);font-size:12px;letter-spacing:.3em;color:var(--gold);margin-bottom:16px;text-transform:uppercase;}
.contact-item p{font-size:14px;color:var(--text);line-height:2;}

/* 页脚 */
footer{background:var(--green-deep);color:var(--cream);padding:60px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.footer-logo img{width:36px;height:36px;filter:brightness(0) invert(1);}
.footer-logo .en{font-family:var(--en);font-weight:600;font-size:22px;letter-spacing:.06em;}
.footer-logo .cn{font-size:10px;letter-spacing:.4em;opacity:.6;margin-top:2px;}
.footer-col h5{font-family:var(--en);font-size:11px;letter-spacing:.3em;margin-bottom:16px;opacity:.5;text-transform:uppercase;}
.footer-col a{display:block;font-size:13px;opacity:.7;margin-bottom:8px;transition:opacity .3s;}
.footer-col a:hover{opacity:1;color:var(--gold);}
.footer-bottom{border-top:1px solid rgba(239,234,224,.1);padding-top:24px;text-align:center;font-size:12px;opacity:.4;}
.footer-bottom .footer-copy{opacity:1;}
.footer-icp{margin-top:8px;display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;}
.footer-icp a{color:inherit;transition:color .3s,opacity .3s;}
.footer-icp a:hover{color:var(--gold);opacity:1;}
.footer-sep{opacity:.5;}

/* 响应式 */
@media (max-width:900px){
  .nav-links{display:none;}
  .burger{display:flex;}
  .services{grid-template-columns:1fr;}
  .service-item{border-right:none;}
  .works-grid{grid-template-columns:1fr;}
  .process{grid-template-columns:repeat(2,1fr);}
  .about-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-icp{flex-direction:column;gap:6px;}
  .footer-sep{display:none;}
}

/* ===== 次级页面公共样式 ===== */
.page-hero{background:var(--green-deep);color:var(--cream);padding:180px 0 90px;position:relative;overflow:hidden;}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 40%,rgba(184,153,104,.14),transparent 60%);}
.page-hero .wrap{position:relative;z-index:1;}
.page-hero .label{font-family:var(--en);font-size:11px;letter-spacing:.4em;color:var(--gold);margin-bottom:18px;font-weight:500;}
.page-hero h1{font-size:clamp(30px,4.5vw,54px);font-weight:300;letter-spacing:.08em;line-height:1.25;}
.page-hero p{font-size:14px;opacity:.55;margin-top:20px;max-width:560px;line-height:2;}
.crumb{font-family:var(--en);font-size:11px;letter-spacing:.2em;text-transform:uppercase;opacity:.4;margin-bottom:26px;}
.crumb a{color:inherit;transition:color .3s;}
.crumb a:hover{color:var(--gold);}
.work-link{display:block;color:inherit;}
/* 服务详情 */
.svc-block{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:70px 0;border-bottom:1px solid var(--border);}
.svc-block:last-of-type{border-bottom:none;}
.svc-img{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);}
.svc-img img{width:100%;height:100%;object-fit:cover;}
.svc-body h3{font-size:26px;font-weight:300;letter-spacing:.08em;margin-bottom:20px;color:var(--text);}
.svc-body p{font-size:14px;color:var(--text-muted);line-height:2.1;margin-bottom:14px;}
.svc-list{margin:22px 0;padding:0;list-style:none;}
.svc-list li{font-size:13px;color:var(--text);padding:9px 0 9px 26px;position:relative;border-bottom:1px dashed var(--border);}
.svc-list li::before{content:'//';position:absolute;left:0;color:var(--gold);font-family:var(--en);font-weight:500;}
.svc-num{font-family:var(--en);font-size:13px;letter-spacing:.3em;color:var(--gold);margin-bottom:14px;font-weight:500;}
/* 案例详情 */
.case-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--border);margin:50px 0 0;}
.case-meta div{padding:22px 24px;border-right:1px solid var(--border);}
.case-meta div:last-child{border-right:none;}
.case-meta h5{font-family:var(--en);font-size:10px;letter-spacing:.3em;color:var(--gold);margin-bottom:8px;text-transform:uppercase;}
.case-meta p{font-size:13px;color:var(--text);}
.case-hero{aspect-ratio:21/9;overflow:hidden;background:var(--bg-alt);margin-bottom:50px;}
.case-hero img{width:100%;height:100%;object-fit:cover;}
.case-body{max-width:760px;margin:0 auto;}
.case-body h3{font-size:20px;font-weight:500;letter-spacing:.08em;margin:46px 0 18px;color:var(--text);}
.case-body h3 span{color:var(--gold);font-family:var(--en);font-size:13px;letter-spacing:.25em;margin-right:14px;font-weight:400;}
.case-body p{font-size:14px;color:var(--text-muted);line-height:2.15;margin-bottom:14px;}
.spec-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:13px;}
.spec-table th{font-family:var(--en);font-size:11px;letter-spacing:.15em;color:var(--gold);text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);text-transform:uppercase;font-weight:500;white-space:nowrap;}
.spec-table td{padding:12px 16px;border-bottom:1px dashed var(--border);color:var(--text-muted);line-height:1.8;}
.case-nav{display:flex;justify-content:space-between;gap:20px;margin-top:70px;padding-top:30px;border-top:1px solid var(--border);}
.case-nav a{font-size:12px;letter-spacing:.15em;color:var(--text-muted);transition:color .3s;font-family:var(--en);}
.case-nav a:hover{color:var(--gold);}
@media (max-width:900px){
  .svc-block{grid-template-columns:1fr;gap:34px;padding:50px 0;}
  .case-meta{grid-template-columns:1fr 1fr;}
  .case-meta div:nth-child(2n){border-right:none;}
  .case-hero{aspect-ratio:16/10;}
}

/* ===== 移动端下拉菜单 ===== */
.burger{transition:opacity .3s;}
.burger:hover span{background:var(--gold);}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.active span:nth-child(2){opacity:0;}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-menu{position:fixed;top:96px;left:16px;right:16px;z-index:99;background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:10px 8px;box-shadow:0 18px 50px rgba(15,26,23,.18);opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity .3s,transform .3s;}
body.menu-open .mobile-menu{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-menu a{display:block;padding:14px 22px;font-family:var(--en);font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--text);border-radius:8px;transition:background .3s,color .3s;}
.mobile-menu a:hover{background:var(--bg-alt);color:var(--gold);}
@media (min-width:901px){.mobile-menu{display:none !important;}}
/* 小屏导航收紧 + 菜单位置修正 */
@media (max-width:480px){
  .nav{padding:16px 20px;}
  .nav-logo-text .en{font-size:19px;white-space:nowrap;}
  .nav-logo-img{width:38px;height:38px;}
}

/* ===== 联系区块交互 ===== */
.wechat-qr{width:136px;height:136px;border:1px solid var(--border);border-radius:10px;padding:6px;background:var(--bg-card);margin:4px 0 12px;}
.copy-id{cursor:pointer;color:var(--text);border-bottom:1px dashed var(--gold);transition:color .3s;}
.copy-id:hover{color:var(--gold);}
a.contact-link{color:var(--text);border-bottom:1px solid transparent;transition:color .3s,border-color .3s;}
a.contact-link:hover{color:var(--gold);border-color:var(--gold);}
.copy-toast{position:fixed;left:50%;bottom:48px;transform:translateX(-50%) translateY(16px);background:var(--green-deep);color:var(--cream);font-size:13px;letter-spacing:.08em;padding:12px 28px;border-radius:30px;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;z-index:200;}
body.dark .copy-toast{background:var(--cream);color:var(--green-deep);}
.copy-toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===== 联名设计页 ===== */
.collab-hero{border:1px solid var(--border);overflow:hidden;}
.collab-hero img{width:100%;display:block;}
.sec-head{max-width:640px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:300;letter-spacing:.1em;margin:14px 0 16px;color:var(--text);}
.sec-head p{font-size:14px;color:var(--text-muted);line-height:2;}
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.prod-card{border:1px solid var(--border);background:var(--bg-card);overflow:hidden;transition:transform .35s,box-shadow .35s;}
.prod-card:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(15,26,23,.12);}
.prod-img{aspect-ratio:4/5;overflow:hidden;background:var(--bg-alt);}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s;}
.prod-card:hover .prod-img img{transform:scale(1.04);}
.prod-info{padding:26px 26px 30px;}
.prod-info h4{font-size:19px;font-weight:500;letter-spacing:.06em;margin:10px 0 10px;color:var(--text);}
.prod-info p{font-size:13px;color:var(--text-muted);line-height:1.9;min-height:52px;}
.price{font-family:var(--en);font-size:22px;font-weight:500;color:var(--gold);margin:14px 0 16px;letter-spacing:.05em;}
.buy-row{display:flex;gap:12px;flex-wrap:wrap;}
.buy-btn{flex:1;min-width:130px;text-align:center;font-size:12px;letter-spacing:.14em;padding:12px 10px;border-radius:4px;transition:all .3s;font-family:var(--cn);}
.buy-wx{background:var(--green-deep);color:var(--cream);border:1px solid var(--green-deep);}
.buy-wx:hover{background:var(--gold);border-color:var(--gold);color:#162925;}
.buy-tb{background:transparent;color:var(--text);border:1px solid var(--border);}
.buy-tb:hover{border-color:var(--gold);color:var(--gold);}
@media (max-width:900px){
  .prod-grid{grid-template-columns:1fr;gap:28px;}
  .prod-info p{min-height:0;}
}

/* ===== 主页联名区块 ===== */
.collab-teaser{background:var(--green-deep);color:var(--cream);}
.collab-teaser .label{color:var(--gold);font-family:var(--en);font-size:11px;letter-spacing:.4em;font-weight:500;}
.collab-teaser h2{font-size:clamp(24px,3vw,36px);font-weight:300;letter-spacing:.1em;margin:14px 0 14px;}
.collab-teaser .teaser-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:44px;flex-wrap:wrap;}
.collab-teaser .teaser-head p{font-size:14px;opacity:.55;max-width:520px;line-height:2;}
.teaser-link{font-family:var(--en);font-size:12px;letter-spacing:.2em;color:var(--gold);border:1px solid rgba(184,153,104,.45);padding:13px 30px;border-radius:30px;white-space:nowrap;transition:background .3s,color .3s;}
.teaser-link:hover{background:var(--gold);color:#162925;}
.teaser-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:20px;}
.teaser-card{position:relative;overflow:hidden;display:block;}
.teaser-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s;aspect-ratio:3/4;}
.teaser-card:first-child img{aspect-ratio:3/4;}
.teaser-card::after{content:attr(data-label);position:absolute;left:18px;bottom:14px;color:var(--cream);font-size:13px;letter-spacing:.12em;text-shadow:0 1px 8px rgba(0,0,0,.6);}
.teaser-card:hover img{transform:scale(1.05);}
@media (max-width:900px){.teaser-grid{grid-template-columns:1fr 1fr;}.teaser-grid .teaser-card:first-child{grid-column:1/-1;}}

/* ===== 商品详情页 ===== */
.detail-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;padding:70px 0 40px;align-items:start;}
.detail-img{border:1px solid var(--border);overflow:hidden;cursor:zoom-in;background:var(--bg-alt);}
.detail-img img{width:100%;display:block;}
.detail-zoom-hint{font-family:var(--en);font-size:10px;letter-spacing:.25em;color:var(--text-muted);text-align:center;margin-top:10px;text-transform:uppercase;}
.detail-info .cat{color:var(--gold);font-family:var(--en);font-size:12px;letter-spacing:.3em;}
.detail-info h1{font-size:clamp(24px,2.6vw,32px);font-weight:400;letter-spacing:.06em;margin:14px 0 18px;color:var(--text);}
.detail-info .desc{font-size:14px;color:var(--text-muted);line-height:2.1;margin-bottom:24px;}
.detail-price{font-family:var(--en);font-size:30px;font-weight:500;color:var(--gold);margin:6px 0 22px;letter-spacing:.05em;}
.detail-price small{font-size:12px;color:var(--text-muted);letter-spacing:.1em;margin-left:10px;font-family:var(--cn);font-weight:400;}
.detail-info .buy-row{max-width:340px;}
.spec-list{margin-top:30px;border-top:1px solid var(--border);}
.spec-list div{display:flex;padding:13px 2px;border-bottom:1px dashed var(--border);font-size:13px;}
.spec-list b{width:88px;flex-shrink:0;color:var(--gold);font-family:var(--en);font-weight:500;letter-spacing:.08em;font-size:12px;padding-top:1px;}
.spec-list span{color:var(--text-muted);line-height:1.7;}
@media (max-width:900px){.detail-wrap{grid-template-columns:1fr;gap:34px;padding:44px 0 30px;}}

/* ===== 图片放大灯箱 ===== */
.lightbox{position:fixed;inset:0;z-index:300;background:rgba(10,16,14,.94);display:none;cursor:zoom-out;}
.lightbox.open{display:flex;align-items:center;justify-content:center;}
.lightbox img{max-width:92vw;max-height:92vh;transition:transform .35s;transform-origin:center;cursor:zoom-in;box-shadow:0 30px 80px rgba(0,0,0,.5);}
.lightbox img.zoomed{transform:scale(2.4);}
.lightbox-close{position:absolute;top:22px;right:30px;font-size:30px;color:var(--cream);opacity:.7;cursor:pointer;line-height:1;font-family:var(--en);}
.lightbox-close:hover{opacity:1;}
a.prod-img{display:block;}
.detail-link{display:inline-block;margin-top:10px;font-size:12px;letter-spacing:.15em;color:var(--gold);border-bottom:1px solid transparent;transition:border-color .3s;}
.detail-link:hover{border-color:var(--gold);}