/* 佳展中国 — 专业制造，白底克制风 */
:root {
    --cn-navy: #0a1628;
    --cn-accent: #c41e3a;
    --cn-accent-hover: #a01830;
    --cn-teal: #0097a7;
    --cn-gray-50: #f8fafc;
    --cn-gray-100: #f1f5f9;
    --cn-gray-200: #e2e8f0;
    --cn-gray-300: #cbd5e1;
    --cn-gray-400: #94a3b8;
    --cn-gray-600: #475569;
    --cn-gray-700: #334155;
    --cn-gray-800: #1e293b;
    --cn-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --cn-shadow: 0 4px 16px rgba(0,0,0,0.08);
    --cn-shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --cn-radius: 8px;
    --cn-radius-lg: 12px;
    --cn-max-w: 1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--cn-gray-800);background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}

/* ===== 导航栏 ===== */
.cn-navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;padding:0 40px;height:64px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--cn-shadow-sm);transition:all .3s}
.cn-navbar.scrolled{box-shadow:0 2px 12px rgba(0,0,0,0.1)}
.cn-logo{font-size:20px;font-weight:700;color:var(--cn-navy)}
.cn-logo span{color:var(--cn-accent)}
.cn-nav-links{display:flex;gap:32px}
.cn-nav-links a{color:var(--cn-gray-600);font-size:14px;font-weight:500;padding:4px 0;border-bottom:2px solid transparent;transition:all .2s}
.cn-nav-links a:hover{color:var(--cn-navy);border-bottom-color:var(--cn-accent)}
.cn-nav-cta{background:var(--cn-accent);color:#fff;padding:8px 24px;border-radius:6px;font-size:14px;font-weight:600;transition:all .2s}
.cn-nav-cta:hover{background:var(--cn-accent-hover)}
.cn-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.cn-hamburger span{width:22px;height:2px;background:var(--cn-navy);transition:all .2s}

/* ===== Hero ===== */
.cn-hero{position:relative;height:80vh;min-height:500px;background:var(--cn-navy);overflow:hidden;display:flex;align-items:center}
.cn-hero-slides{position:absolute;inset:0}
.cn-hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.cn-hero-slide.active{opacity:1}
.cn-hero-slide img,.cn-hero-slide video{width:100%;height:100%;object-fit:cover}
.cn-hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,22,40,0.88) 0%,rgba(10,22,40,0.5) 60%,rgba(10,22,40,0.2) 100%)}
.cn-hero-content{position:absolute;top:calc(50% + 40px);left:50%;transform:translate(-50%,-50%);z-index:2;max-width:var(--cn-max-w);width:100%;padding:0 60px}
.cn-hero-tag{display:inline-block;background:var(--cn-accent);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:3px;letter-spacing:1px;margin-bottom:20px;text-transform:uppercase}
.cn-hero-title{color:#fff;font-size:48px;font-weight:700;line-height:1.2;margin-bottom:16px;max-width:600px}
.cn-hero-subtitle{color:rgba(255,255,255,0.7);font-size:18px;margin-bottom:36px;max-width:480px;line-height:1.6}
.cn-hero-btns{display:flex;gap:12px}
.cn-btn-primary{background:var(--cn-accent);color:#fff;padding:14px 36px;border-radius:6px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:all .2s}
.cn-btn-primary:hover{background:var(--cn-accent-hover);transform:translateY(-1px);box-shadow:0 6px 20px rgba(196,30,58,0.3)}
.cn-btn-outline{background:transparent;color:#fff;padding:14px 36px;border-radius:6px;font-size:15px;font-weight:600;border:1.5px solid rgba(255,255,255,0.4);cursor:pointer;transition:all .2s}
.cn-btn-outline:hover{border-color:#fff;background:rgba(255,255,255,0.1)}
.cn-hero-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.cn-hero-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.3);cursor:pointer;transition:all .2s}
.cn-hero-dot.active{background:#fff;width:28px;border-radius:5px}
.cn-hero-arrows{position:absolute;top:50%;width:100%;display:flex;justify-content:space-between;padding:0 20px;z-index:3;transform:translateY(-50%);pointer-events:none}
.cn-hero-arrow{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.2);color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;pointer-events:all}
.cn-hero-arrow:hover{background:var(--cn-accent);border-color:var(--cn-accent)}

/* ===== 制造装备滚动条 ===== */
.cn-equip-scroll{padding:80px 40px;background:var(--cn-gray-50)}
.cn-equip-track-wrapper{position:relative;max-width:var(--cn-max-w);margin:0 auto}
.cn-equip-track{display:flex;gap:24px;overflow-x:auto;scroll-behavior:smooth;scrollbar-width:none;-ms-overflow-style:none;padding:8px 0}
.cn-equip-track::-webkit-scrollbar{display:none}
.cn-equip-card{flex:0 0 240px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.cn-equip-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1)}
.cn-equip-img{height:180px;overflow:hidden;background:var(--cn-gray-100)}
.cn-equip-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.cn-equip-card:hover .cn-equip-img img{transform:scale(1.05)}
.cn-equip-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e8edf3,#f0f4f8);color:var(--cn-gray-400);font-size:14px;font-weight:500}
.cn-equip-info{padding:16px}
.cn-equip-info h4{font-size:15px;font-weight:600;color:var(--cn-dark);margin:0 0 4px}
.cn-equip-info p{font-size:13px;color:var(--cn-gray-500);margin:0}
.cn-equip-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;border:1px solid var(--cn-gray-200);background:#fff;cursor:pointer;font-size:22px;color:var(--cn-dark);display:flex;align-items:center;justify-content:center;z-index:2;transition:all .2s;box-shadow:0 2px 8px rgba(0,0,0,.08)}
.cn-equip-arrow:hover{background:var(--cn-dark);color:#fff;border-color:var(--cn-dark)}
.cn-equip-prev{left:-20px}
.cn-equip-next{right:-20px}
@media(max-width:768px){
    .cn-equip-card{flex:0 0 200px}
    .cn-equip-img{height:140px}
    .cn-equip-prev{left:0}
    .cn-equip-next{right:0}
}

/* ===== 通用 ===== */
.cn-section{padding:80px 40px}
.cn-section-inner{max-width:var(--cn-max-w);margin:0 auto}
.cn-section-header{margin-bottom:48px}
.cn-section-title{font-size:30px;font-weight:700;color:var(--cn-navy);margin-bottom:8px}
.cn-section-subtitle{color:var(--cn-gray-400);font-size:15px}
.cn-section-header.center{text-align:center}

/* ===== 关于故事区（Hero下方） ===== */
.cn-story{padding:80px 40px;background:#fff}
.cn-story-inner{max-width:var(--cn-max-w);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.cn-story-text h2{font-size:30px;font-weight:700;color:var(--cn-navy);margin-bottom:16px;line-height:1.3}
.cn-story-text p{color:var(--cn-gray-600);font-size:15px;margin-bottom:16px;line-height:1.8}
.cn-story-img{border-radius:var(--cn-radius-lg);overflow:hidden;background:var(--cn-gray-100);min-height:360px}
.cn-story-img img{width:100%;height:100%;object-fit:cover}

/* ===== 能力条（横向icon） ===== */
.cn-caps{padding:60px 40px;background:var(--cn-gray-50)}
.cn-caps-grid{max-width:var(--cn-max-w);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.cn-cap-item{padding:32px 24px;text-align:center;border-right:1px solid var(--cn-gray-200)}
.cn-cap-item:last-child{border-right:none}
.cn-cap-icon{width:48px;height:48px;margin:0 auto 16px;border-radius:50%;background:var(--cn-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}
.cn-cap-item h4{font-size:16px;font-weight:600;color:var(--cn-navy);margin-bottom:8px}
.cn-cap-item p{color:var(--cn-gray-600);font-size:13px;line-height:1.6}

/* ===== 第二屏：核心工艺（学西门子"升级现实"） ===== */
.cn-craft{padding:80px 40px;background:#fff}
.cn-craft-inner{max-width:var(--cn-max-w);margin:0 auto;display:flex;gap:0;min-height:520px}
.cn-craft-left{width:280px;flex-shrink:0;padding-right:40px;border-right:1px solid var(--cn-gray-200)}
.cn-craft-label{font-size:12px;font-weight:600;color:var(--cn-accent);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:12px}
.cn-craft-title{font-size:28px;font-weight:700;color:var(--cn-navy);line-height:1.3;margin-bottom:12px}
.cn-craft-desc{color:var(--cn-gray-400);font-size:14px;line-height:1.7;margin-bottom:28px}
.cn-craft-tabs{display:flex;flex-direction:column;gap:2px}
.cn-craft-tab{display:block;width:100%;padding:12px 16px;background:none;border:none;border-left:3px solid transparent;text-align:left;font-size:15px;color:var(--cn-gray-600);cursor:pointer;transition:all .2s;border-radius:0 6px 6px 0}
.cn-craft-tab:hover{background:var(--cn-gray-50)}
.cn-craft-tab.active{border-left-color:var(--cn-accent);color:var(--cn-accent);background:rgba(196,30,58,0.04);font-weight:600}

.cn-craft-right{flex:1;padding-left:40px}
.cn-craft-panel{display:none}
.cn-craft-panel.active{display:block}
.cn-craft-grid{display:grid;grid-template-columns:1fr 320px;gap:24px}
.cn-craft-feature{display:flex;flex-direction:column}
.cn-craft-feature-img{width:100%;min-height:280px;border-radius:var(--cn-radius-lg);overflow:hidden}
.cn-craft-feature-img img{width:100%;height:100%;object-fit:cover}
.cn-craft-feature-body{padding-top:20px}
.cn-craft-feature-tag{display:inline-block;background:var(--cn-accent);color:#fff;font-size:11px;font-weight:600;padding:3px 10px;border-radius:3px;margin-bottom:10px}
.cn-craft-feature-body h3{font-size:22px;font-weight:700;color:var(--cn-navy);margin-bottom:8px;line-height:1.3}
.cn-craft-feature-body p{color:var(--cn-gray-600);font-size:14px;line-height:1.7;margin-bottom:12px}

.cn-craft-side{display:flex;flex-direction:column;gap:16px}
.cn-craft-side-card{padding:24px;border-radius:var(--cn-radius);border:1px solid var(--cn-gray-200);flex:1}
.cn-craft-side-card h4{font-size:16px;font-weight:600;color:var(--cn-navy);margin-bottom:6px}
.cn-craft-side-card p{color:var(--cn-gray-600);font-size:13px;line-height:1.6}
.cn-craft-side-dark{background:var(--cn-navy);border-color:var(--cn-navy)}
.cn-craft-side-dark h4{color:#fff}
.cn-craft-side-dark p{color:rgba(255,255,255,0.65)}
.cn-craft-side-dark .cn-craft-feature-tag{background:rgba(255,255,255,0.15);color:#fff}

/* ===== 第三屏：解决方案（学西门子产品卡片） ===== */
.cn-solutions-section{padding:80px 40px;background:var(--cn-gray-50)}
.cn-solutions-inner{max-width:var(--cn-max-w);margin:0 auto}
.cn-solutions-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px}
.cn-solutions-label{font-size:12px;font-weight:600;color:var(--cn-accent);letter-spacing:1px;margin-bottom:6px}
.cn-btn-outline-sm{padding:8px 20px;border:1.5px solid var(--cn-gray-300);border-radius:6px;font-size:13px;font-weight:600;color:var(--cn-gray-600);transition:all .2s}
.cn-btn-outline-sm:hover{border-color:var(--cn-accent);color:var(--cn-accent)}
.cn-solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cn-sol-card{background:#fff;border-radius:var(--cn-radius-lg);overflow:hidden;box-shadow:var(--cn-shadow-sm);transition:all .2s}
.cn-sol-card:hover{transform:translateY(-4px);box-shadow:var(--cn-shadow)}
.cn-sol-card-img{height:200px;overflow:hidden}
.cn-sol-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.cn-sol-card:hover .cn-sol-card-img img{transform:scale(1.04)}
.cn-sol-card-body{padding:24px}
.cn-sol-card-body h4{font-size:17px;font-weight:600;color:var(--cn-navy);margin-bottom:8px}
.cn-sol-card-body p{color:var(--cn-gray-600);font-size:14px;line-height:1.6;margin-bottom:12px}

/* ===== 数字横条 ===== */
.cn-numbers{padding:48px 40px;background:var(--cn-navy)}
.cn-numbers-inner{max-width:var(--cn-max-w);margin:0 auto;display:flex;justify-content:space-around;text-align:center}
.cn-num-item{}
.cn-num-val{font-size:40px;font-weight:700;color:#fff;margin-bottom:4px}
.cn-num-val span{color:var(--cn-accent)}
.cn-num-label{font-size:14px;color:rgba(255,255,255,0.6)}

/* ===== 资质认证 ===== */
.cn-certs{padding:60px 40px;background:#fff}
.cn-certs-inner{max-width:var(--cn-max-w);margin:0 auto;display:flex;align-items:center;gap:40px;flex-wrap:wrap;justify-content:center}
.cn-cert-item{padding:16px 28px;border:1px solid var(--cn-gray-200);border-radius:var(--cn-radius);font-size:14px;font-weight:600;color:var(--cn-gray-700);display:inline-flex;align-items:center;gap:12px;transition:all .2s;width:200px;justify-content:center}
.cn-cert-item:hover{border-color:var(--cn-accent);box-shadow:var(--cn-shadow-sm)}
.cn-cert-item .cert-badge{width:48px;height:48px;border-radius:var(--cn-radius);background:var(--cn-gray-50);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--cn-accent)}
.cn-cert-logo{width:48px;height:48px;object-fit:contain;border-radius:var(--cn-radius)}
.cn-cert-name{font-size:14px;font-weight:600;color:var(--cn-gray-700)}

/* ===== 新闻 ===== */
.cn-news{padding:80px 40px;background:var(--cn-gray-50)}
.cn-news-grid{max-width:var(--cn-max-w);margin:0 auto;display:grid;grid-template-columns:2fr 1fr;gap:32px}
.cn-news-main{background:#fff;border-radius:var(--cn-radius-lg);padding:32px;box-shadow:var(--cn-shadow-sm)}
.cn-news-main .cn-news-date{color:var(--cn-accent);font-size:13px;font-weight:600;margin-bottom:8px}
.cn-news-main h3{font-size:20px;font-weight:600;margin-bottom:10px;line-height:1.4}
.cn-news-main p{color:var(--cn-gray-600);font-size:14px;line-height:1.7}
.cn-news-side{display:flex;flex-direction:column;gap:16px}
.cn-news-sm{background:#fff;border-radius:var(--cn-radius);padding:20px;box-shadow:var(--cn-shadow-sm)}
.cn-news-sm .cn-news-date{color:var(--cn-accent);font-size:12px;font-weight:600;margin-bottom:4px}
.cn-news-sm h4{font-size:15px;font-weight:600;line-height:1.4}
.cn-product-link{color:var(--cn-accent);font-size:14px;font-weight:600;transition:all .2s}
.cn-product-link:hover{gap:6px}

/* ===== CTA ===== */
.cn-cta{padding:80px 40px;background:var(--cn-navy)}
.cn-cta-inner{max-width:var(--cn-max-w);margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:40px}
.cn-cta-info h3{color:#fff;font-size:28px;font-weight:700;margin-bottom:12px}
.cn-cta-info p{color:rgba(255,255,255,0.6);font-size:15px}
.cn-cta-btn{background:var(--cn-accent);color:#fff;padding:16px 48px;border-radius:6px;font-size:16px;font-weight:700;border:none;cursor:pointer;transition:all .2s;white-space:nowrap}
.cn-cta-btn:hover{background:var(--cn-accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(196,30,58,0.4)}

/* ===== 页脚 ===== */
.cn-footer{background:var(--cn-gray-800);color:rgba(255,255,255,0.6);padding:48px 40px 16px}
.cn-footer-inner{max-width:var(--cn-max-w);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.cn-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.cn-footer p{font-size:13px;line-height:1.7}
.cn-footer a{color:rgba(255,255,255,0.5);font-size:13px;display:block;padding:3px 0;transition:all .2s}
.cn-footer a:hover{color:var(--cn-accent)}
.cn-footer-bottom{max-width:var(--cn-max-w);margin:32px auto 0;padding-top:16px;border-top:1px solid rgba(255,255,255,0.08);text-align:center;font-size:12px;color:rgba(255,255,255,0.35)}

/* ===== 表单 ===== */
.cn-form{max-width:600px;margin:0 auto;background:#fff;padding:40px;border-radius:var(--cn-radius-lg);box-shadow:var(--cn-shadow)}
.cn-form-group{margin-bottom:18px}
.cn-form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:var(--cn-gray-700)}
.cn-form-group input,.cn-form-group textarea,.cn-form-group select{width:100%;padding:10px 14px;border:1px solid var(--cn-gray-200);border-radius:6px;font-size:14px;transition:all .2s;outline:none;font-family:inherit}
.cn-form-group input:focus,.cn-form-group textarea:focus{border-color:var(--cn-accent);box-shadow:0 0 0 3px rgba(196,30,58,0.08)}
.cn-form-group textarea{height:110px;resize:vertical}

/* ===== 后台（保留不变） ===== */
.cn-admin-wrap{display:flex;min-height:100vh}
.cn-admin-sidebar{width:240px;background:var(--cn-navy);color:#fff;padding:20px 0;flex-shrink:0}
.cn-admin-sidebar h3{padding:0 20px 20px;font-size:18px;border-bottom:1px solid rgba(255,255,255,0.1);margin-bottom:10px}
.cn-admin-sidebar a{display:block;padding:12px 20px;color:rgba(255,255,255,0.7);font-size:14px;transition:all .2s}
.cn-admin-sidebar a:hover,.cn-admin-sidebar a.active{background:rgba(196,30,58,0.15);color:var(--cn-accent)}
.cn-admin-main{flex:1;padding:30px;background:var(--cn-gray-50)}
.cn-admin-card{background:#fff;border-radius:var(--cn-radius);box-shadow:var(--cn-shadow-sm);padding:24px;margin-bottom:20px}
.cn-admin-table{width:100%;border-collapse:collapse}
.cn-admin-table th{background:var(--cn-gray-50);padding:10px 14px;text-align:left;font-size:13px;font-weight:600}
.cn-admin-table td{padding:10px 14px;border-bottom:1px solid var(--cn-gray-100);font-size:13px}
.cn-admin-btn{padding:7px 14px;border-radius:5px;border:none;font-size:13px;cursor:pointer;transition:all .2s}
.cn-admin-btn-primary{background:var(--cn-accent);color:#fff}
.cn-admin-btn-sm{background:var(--cn-gray-100);color:var(--cn-gray-700);padding:4px 10px;font-size:12px}
.cn-admin-btn-sm:hover{background:var(--cn-gray-200)}
.cn-admin-btn-danger{background:#fee2e2;color:var(--cn-accent)}
.cn-admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px}
.cn-admin-stat{background:#fff;border-radius:var(--cn-radius);padding:18px;box-shadow:var(--cn-shadow-sm);text-align:center}
.cn-admin-stat .num{font-size:28px;font-weight:700;color:var(--cn-accent)}
.cn-admin-stat .label{color:var(--cn-gray-400);font-size:13px;margin-top:2px}

/* ===== 占位图（简化，不抢眼） ===== */
.cn-placeholder-img{background:var(--cn-gray-100);display:flex;align-items:center;justify-content:center;color:var(--cn-gray-400);font-size:14px}
.cn-placeholder-img span{padding:6px 14px;border:1px dashed var(--cn-gray-300);border-radius:6px}
.cn-story-img.cn-placeholder-img{min-height:360px}
.cn-cap-icon.cn-placeholder-img{border-radius:50%;background:var(--cn-gray-100)}
.cn-cap-icon.cn-placeholder-img span{border:none;font-size:20px}

/* ===== 响应式 ===== */
@media(max-width:768px){
    .cn-navbar{padding:0 20px}
    .cn-nav-links{display:none}
    .cn-hamburger{display:flex}
    .cn-hero-content{padding:0 24px}
    .cn-hero-title{font-size:30px}
    .cn-hero-subtitle{font-size:15px}
    .cn-hero{height:70vh;min-height:420px}
    .cn-section{padding:50px 20px}
    .cn-story-inner{grid-template-columns:1fr;gap:32px}
    .cn-caps-grid{grid-template-columns:repeat(2,1fr)}
    .cn-cap-item:nth-child(2){border-right:none}
    .cn-cap-item{border-bottom:1px solid var(--cn-gray-200)}
    .cn-craft-inner{flex-direction:column}
    .cn-craft-left{width:100%;padding-right:0;border-right:none;border-bottom:1px solid var(--cn-gray-200);padding-bottom:20px;margin-bottom:20px}
    .cn-craft-tabs{flex-direction:row;flex-wrap:wrap;gap:6px}
    .cn-craft-tab{border-left:none;border-bottom:3px solid transparent;border-radius:6px}
    .cn-craft-tab.active{border-bottom-color:var(--cn-accent);border-left-color:transparent}
    .cn-craft-right{padding-left:0}
    .cn-craft-grid{grid-template-columns:1fr}
    .cn-solutions-grid{grid-template-columns:1fr}
    .cn-numbers-inner{flex-wrap:wrap;gap:24px}
    .cn-num-item{flex:1 1 40%}
    .cn-news-grid{grid-template-columns:1fr}
    .cn-cta-inner{flex-direction:column;text-align:center}
    .cn-footer-inner{grid-template-columns:1fr 1fr}
    .cn-admin-stats{grid-template-columns:repeat(2,1fr)}
    .cn-admin-wrap{flex-direction:column}
    .cn-admin-sidebar{width:100%}
}
@media(max-width:480px){
    .cn-hero-title{font-size:24px}
    .cn-hero-btns{flex-direction:row;gap:8px}.cn-hero-btns a{flex:1;font-size:14px;padding:10px 16px}
    .cn-craft-tabs{gap:4px}
    .cn-craft-tab{font-size:13px;padding:8px 12px}
    .cn-caps-grid{grid-template-columns:1fr}
    .cn-cap-item{border-right:none}
    .cn-footer-inner{grid-template-columns:1fr}
    .cn-admin-stats{grid-template-columns:1fr}
    .cn-num-val{font-size:28px}
    .cn-num-label{font-size:12px}
}

/* === 社交图标 === */
.cn-social-links {
    display: flex;
    gap: 1rem;
    margin-top: 16px;
}
.cn-social-links .cn-social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 18px;
    transition: all 0.3s ease;
    position: relative;
}
.cn-social-links .cn-social-icon:hover {
    background: var(--cn-accent, #c41e3a);
    color: #fff;
    transform: translateY(-3px);
}

/* === 页脚联系信息 === */
.cn-footer-contact {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    line-height: 1.6;
    margin: 6px 0;
    color: rgba(255,255,255,0.75);
}
.cn-footer-contact a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
}
.cn-footer-contact a:hover {
    color: var(--cn-accent, #c41e3a);
}
.cn-footer-hours {
    margin-top: 4px;
}

/* === 社交图标二维码弹出 === */
.cn-social-icon .cn-social-icon .cn-qr-popup {
    display: none;
    position: absolute;
    bottom: 52px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    border-radius: 10px;
    padding: 12px;
    width: 172px;
    box-shadow: 0 6px 30px rgba(0,0,0,0.25);
    text-align: center;
    z-index: 1000;
}
.cn-social-icon .cn-qr-popup::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: #fff;
}
.cn-social-icon .cn-qr-popup img {
    display: block;
    border-radius: 4px;
    margin-bottom: 6px;
    width: 140px;
    height: 140px;
    object-fit: contain;
}
.cn-social-icon .cn-qr-popup small {
    color: #666;
    font-size: 12px;
}
.cn-social-icon:hover .cn-qr-popup {
    display: block;
}

/* ==================== 回到顶部按钮 - 火箭造型（CN配色） ==================== */
.cn-back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0a1628 0%, #1a3a5c 100%);
    color: white;
    border: 2px solid rgba(26, 58, 92, 0.4);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 999;
    box-shadow: 0 4px 16px rgba(10, 22, 40, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    overflow: visible;
}
.cn-back-to-top i {
    transform: rotate(-45deg);
}
.cn-back-to-top::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 0;
    border-radius: 0 0 3px 3px;
    background: linear-gradient(180deg, #c41e3a 0%, #ff6b35 50%, transparent 100%);
    transition: height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}
.cn-back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.cn-back-to-top:hover {
    transform: translateY(-8px);
    border-color: rgba(196, 30, 58, 0.5);
    box-shadow: 0 8px 24px rgba(10, 22, 40, 0.4), 0 0 12px rgba(196, 30, 58, 0.15);
}
.cn-back-to-top:hover::after {
    height: 18px;
    opacity: 1;
    animation: cnRocketFlame 0.15s ease-in-out infinite alternate;
}
.cn-back-to-top.launching {
    transform: translateY(-800px) scale(0.3);
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.6, 0, 0.4, 1);
}
.cn-back-to-top.launching::after {
    height: 30px;
    opacity: 1;
    width: 10px;
}
@keyframes cnRocketFlame {
    0% { height: 16px; opacity: 0.8; }
    100% { height: 22px; opacity: 1; }
}
@media (max-width: 480px) {
    .cn-back-to-top {
        bottom: 90px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }
}