:root{--walnut:#3E2723;--walnut-light:#5D4037;--walnut-mid:#8D6E63;--cream:#F5F0EB;--cream-dark:#E8DDD3;--white:#FFFFFF;--text:#2C2416;--text-light:#6B5E52;--gold:#B8976A;--max-width:1200px;}*{margin:0;padding:0;box-sizing:border-box;}html{scroll-behavior:smooth;}body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--white);line-height:1.8;font-size:16px;}nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--cream-dark);padding:0 24px;}.nav-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px;}.nav-brand{font-size:20px;font-weight:700;color:var(--walnut);letter-spacing:2px;text-decoration:none;}.nav-links{display:flex;gap:32px;list-style:none;}.nav-links a{text-decoration:none;color:var(--text-light);font-size:14px;transition:color 0.2s;}.nav-links a:hover,.nav-links a.active{color:var(--walnut);}.nav-links a.active{font-weight:600;}.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;width:36px;height:36px;justify-content:center;}.nav-toggle span{display:block;width:24px;height:2px;background:var(--walnut);transition:all 0.3s;border-radius:1px;}.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}.nav-toggle.open span:nth-child(2){opacity:0;}.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}.nav-mobile{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(10px);z-index:99;padding:24px;flex-direction:column;gap:8px;}.nav-mobile.active{display:flex;}.nav-mobile a{display:block;padding:16px 8px;font-size:17px;color:var(--walnut);text-decoration:none;border-bottom:1px solid var(--cream-dark);letter-spacing:1px;}.page-header{margin-top:64px;padding:80px 24px 48px;background:var(--cream);text-align:center;}.page-header h1{font-size:clamp(24px,4vw,36px);font-weight:300;color:var(--walnut);letter-spacing:3px;margin-bottom:12px;}.page-header p{font-size:16px;color:var(--text-light);max-width:640px;margin:0 auto;}.breadcrumb{max-width:var(--max-width);margin:0 auto;padding:24px 24px 0;font-size:13px;color:var(--text-light);}.breadcrumb a{color:var(--walnut-mid);text-decoration:none;}.breadcrumb a:hover{color:var(--walnut);}.case-filters{max-width:var(--max-width);margin:0 auto 48px;padding:0 24px;}.filter-group{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:16px;align-items:center;}.filter-label{font-size:14px;font-weight:600;color:var(--walnut);min-width:60px;}.filter-btn{padding:8px 18px;border:1px solid var(--cream-dark);border-radius:2px;background:var(--white);color:var(--text-light);font-size:13px;cursor:pointer;transition:all 0.2s;font-family:inherit;letter-spacing:1px;}.filter-btn:hover{border-color:var(--walnut-mid);color:var(--walnut);}.filter-btn.active{background:var(--walnut);color:var(--cream);border-color:var(--walnut);}.cases-container{max-width:var(--max-width);margin:0 auto;padding:0 24px 80px;}.case-card{background:var(--white);border:1px solid var(--cream-dark);border-radius:2px;overflow:hidden;margin-bottom:40px;transition:box-shadow 0.3s;}.case-card:hover{box-shadow:0 4px 24px rgba(0,0,0,0.06);}.case-header{padding:32px 32px 0;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;}.case-meta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:16px;}.case-tag{padding:4px 12px;font-size:12px;border-radius:2px;letter-spacing:1px;}.tag-city{background:var(--walnut);color:var(--cream);}.tag-type{background:var(--cream);color:var(--walnut);}.tag-area{background:var(--cream-dark);color:var(--walnut-light);}.case-header h2{font-size:22px;font-weight:500;color:var(--walnut);letter-spacing:1px;margin-bottom:8px;}.case-subtitle{font-size:14px;color:var(--text-light);}.case-body{padding:0 32px 32px;}.case-body h3{font-size:17px;color:var(--walnut);margin:24px 0 12px;font-weight:500;letter-spacing:1px;}.case-body p{font-size:15px;color:var(--text-light);margin-bottom:12px;}.case-body ul,.case-body ol{margin-left:20px;margin-bottom:16px;color:var(--text-light);font-size:14px;}.case-body li{margin-bottom:6px;}.case-detail-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;margin:16px 0;padding:16px;background:var(--cream);border-radius:2px;}.case-detail-item{font-size:13px;}.case-detail-item strong{display:block;color:var(--walnut);font-size:12px;margin-bottom:4px;letter-spacing:1px;}.case-furniture{margin:16px 0;padding:16px;border:1px solid var(--cream-dark);border-radius:2px;}.case-furniture h4{font-size:14px;color:var(--walnut);margin-bottom:8px;}.case-furniture li{font-size:13px;color:var(--text-light);}.case-cta{text-align:center;padding:20px 0 0;}.case-cta a{display:inline-block;padding:12px 36px;background:var(--walnut);color:var(--white);text-decoration:none;border-radius:2px;font-size:14px;letter-spacing:2px;transition:background 0.2s;}.case-cta a:hover{background:var(--walnut-light);}.case-image{width:100%;height:280px;object-fit:cover;object-position:center;border-top:1px solid var(--cream-dark);border-bottom:1px solid var(--cream-dark);display:block;}.case-image-caption{text-align:right;padding:4px 16px;font-size:11px;color:rgba(0,0,0,0.3);background:var(--cream);}@media(max-width:768px){.case-image{height:200px;}}.product-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;}.product-table td,.product-table th{border:1px solid var(--cream-dark);padding:10px 14px;text-align:left;}.product-table th{background:var(--cream);color:var(--walnut);font-weight:600;font-size:13px;}.no-result{text-align:center;padding:60px 24px;color:var(--text-light);font-size:15px;display:none;}footer{background:#1A1210;color:rgba(255,255,255,0.4);padding:48px 24px;text-align:center;font-size:13px;}footer .brand{color:var(--cream);font-size:18px;font-weight:700;letter-spacing:2px;margin-bottom:12px;}@media (max-width:768px){.nav-links{display:none;}.nav-toggle{display:flex;}nav{padding:0 16px;}.nav-inner{height:56px;}.nav-brand{font-size:18px;}.page-header{margin-top:56px;padding:48px 16px 32px;}.case-header{padding:24px 24px 0;}.case-body{padding:0 24px 24px;}.case-header h2{font-size:18px;}.filter-btn{padding:6px 12px;font-size:12px;}footer{padding:36px 16px;}}