/* AI生成 */
/* ===== Global Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#2563EB;
  --primary-dark:#1E40AF;
  --primary-light:#3B82F6;
  --accent:#F59E0B;
  --accent-dark:#D97706;
  --success:#10B981;
  --danger:#EF4444;
  --gold:#FBBF24;
  --gold-dark:#B45309;
  --bg:#F8FAFC;
  --bg-alt:#F1F5F9;
  --surface:#FFFFFF;
  --text:#1E293B;
  --text-light:#64748B;
  --text-muted:#94A3B8;
  --border:#E2E8F0;
  --shadow:0 2px 8px rgba(0,0,0,.08);
  --shadow-lg:0 8px 30px rgba(0,0,0,.12);
  --radius:12px;
  --radius-sm:8px;
  --radius-lg:20px;
  --max-w:1200px;
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}
input,select,textarea,button{font-family:inherit;font-size:inherit;border:none;outline:none}
button{cursor:pointer;background:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.text-center{text-align:center}
.text-gradient{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:all .25s;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,.4)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(245,158,11,.3)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#fff}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-lg{padding:16px 40px;font-size:17px}
.btn-block{display:flex;width:100%}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);height:64px;display:flex;align-items:center}
.header .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800}
.logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}
.logo span{color:var(--primary)}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-weight:500;font-size:15px;color:var(--text-light);transition:color .2s;position:relative}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--primary);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.mobile-menu-btn{display:none;font-size:24px;background:none;border:none;color:var(--text)}
.mobile-nav{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 20px;flex-direction:column;gap:12px;z-index:999}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:10px 0;font-size:16px;color:var(--text);border-bottom:1px solid var(--border)}

/* ===== Hero ===== */
.hero{min-height:600px;display:flex;align-items:center;background:linear-gradient(135deg,#1E3A8A 0%,#1E40AF 30%,#2563EB 60%,#3B82F6 100%);color:#fff;position:relative;overflow:hidden;padding-top:64px}
.hero::before{content:'';position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(245,158,11,.15),transparent);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(59,130,246,.2),transparent);border-radius:50%}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-text h1{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:20px}
.hero-text h1 .highlight{color:var(--gold);position:relative}
.hero-text .subtitle{font-size:20px;opacity:.9;margin-bottom:32px;line-height:1.6}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:40px}
.hero-stats .stat{text-align:center}
.hero-stats .stat .num{font-size:32px;font-weight:800;color:var(--gold)}
.hero-stats .stat .label{font-size:13px;opacity:.8}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-card{background:rgba(255,255,255,.1);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-lg);padding:32px;width:100%;max-width:400px}
.hero-card h3{font-size:20px;margin-bottom:20px;color:var(--gold)}
.hero-card .benefit-item{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.hero-card .benefit-item:last-child{border-bottom:none}
.hero-card .benefit-item .icon{width:40px;height:40px;background:rgba(255,255,255,.15);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.hero-card .benefit-item .text{font-size:14px}
.hero-card .benefit-item .text strong{display:block;font-size:15px}

/* ===== Section Headers ===== */
.section-header{text-align:center;margin-bottom:48px}
.section-header .badge{display:inline-block;padding:4px 16px;background:rgba(37,99,235,.1);color:var(--primary);border-radius:20px;font-size:13px;font-weight:600;margin-bottom:12px}
.section-header h2{font-size:36px;font-weight:800;margin-bottom:12px}
.section-header p{font-size:16px;color:var(--text-light);max-width:600px;margin:0 auto}

/* ===== Feature Cards ===== */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--surface);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);transition:all .3s;border:1px solid var(--border)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.feature-card .icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px}
.feature-card .icon.blue{background:rgba(37,99,235,.1);color:var(--primary)}
.feature-card .icon.gold{background:rgba(245,158,11,.1);color:var(--accent-dark)}
.feature-card .icon.green{background:rgba(16,185,129,.1);color:var(--success)}
.feature-card .icon.purple{background:rgba(139,92,246,.1);color:#8B5CF6}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.6}

/* ===== Product Grid ===== */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.product-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s;border:1px solid var(--border);cursor:pointer}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.product-card .product-img{width:100%;height:200px;background:linear-gradient(135deg,#E0E7FF,#F3E8FF);display:flex;align-items:center;justify-content:center;font-size:48px}
.product-card .product-info{padding:16px}
.product-card .product-name{font-size:16px;font-weight:600;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.product-card .product-price{display:flex;align-items:baseline;gap:8px}
.product-card .price-now{font-size:22px;font-weight:800;color:var(--danger)}
.product-card .price-old{font-size:14px;color:var(--text-muted);text-decoration:line-through}
.product-card .product-tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;margin-bottom:8px}
.product-card .tag-gift{background:rgba(16,185,129,.1);color:var(--success)}
.product-card .tag-hot{background:rgba(239,68,68,.1);color:var(--danger)}
.product-card .tag-new{background:rgba(37,99,235,.1);color:var(--primary)}

/* ===== Pricing/Model Cards ===== */
.model-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.model-card{background:var(--surface);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow);border:2px solid var(--border);transition:all .3s;position:relative}
.model-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow-lg)}
.model-card.featured{border-color:var(--accent);transform:scale(1.03)}
.model-card.featured .ribbon{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:4px 20px;border-radius:20px;font-size:13px;font-weight:700}
.model-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.model-card .model-price{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:4px}
.model-card .model-price small{font-size:14px;font-weight:400;color:var(--text-light)}
.model-card .model-desc{font-size:14px;color:var(--text-light);margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.model-card .benefit-list li{padding:8px 0;font-size:14px;display:flex;align-items:center;gap:8px}
.model-card .benefit-list li::before{content:'';width:20px;height:20px;background:rgba(16,185,129,.15);border-radius:50%;flex-shrink:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2310B981' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:14px}

/* ===== Steps Timeline ===== */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;position:relative}
.steps::before{content:'';position:absolute;top:30px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));z-index:0}
.step{text-align:center;position:relative;z-index:1}
.step .step-num{width:60px;height:60px;background:var(--surface);border:3px solid var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;color:var(--primary);margin:0 auto 16px;position:relative;z-index:1}
.step h4{font-size:16px;font-weight:700;margin-bottom:8px}
.step p{font-size:13px;color:var(--text-light);padding:0 12px}

/* ===== Zhaoshang (招商) Hero ===== */
.zs-hero{background:linear-gradient(135deg,#7C2D12 0%,#9A3412 30%,#C2410C 60%,#EA580C 100%);color:#fff;padding-top:64px}
.zs-hero::before{content:'';position:absolute;top:0;right:0;width:400px;height:400px;background:radial-gradient(circle,rgba(251,191,36,.15),transparent);border-radius:50%}

/* ===== Forms ===== */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:15px;transition:border-color .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-group textarea{resize:vertical;min-height:100px}
.form-card{background:var(--surface);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-lg)}

/* ===== QR Code Section ===== */
.qr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.qr-card{background:var(--surface);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow);border:1px solid var(--border);transition:all .3s}
.qr-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.qr-card .qr-img{width:160px;height:160px;margin:0 auto 16px;background:var(--bg-alt);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:60px}
.qr-card h4{font-size:16px;font-weight:700;margin-bottom:8px}
.qr-card p{font-size:13px;color:var(--text-light)}

/* ===== Profit Calculator ===== */
.calculator{background:var(--surface);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-lg);max-width:700px;margin:0 auto}
.calc-input-group{margin-bottom:24px}
.calc-input-group label{display:flex;justify-content:space-between;font-size:15px;font-weight:600;margin-bottom:8px}
.calc-input-group label .value{color:var(--primary);font-weight:800}
.calc-slider{width:100%;height:6px;background:var(--border);border-radius:3px;appearance:none;outline:none}
.calc-slider::-webkit-slider-thumb{appearance:none;width:20px;height:20px;background:var(--primary);border-radius:50%;cursor:pointer}
.calc-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin-top:24px;padding-top:24px;border-top:2px solid var(--border)}
.calc-result-item{text-align:center}
.calc-result-item .num{font-size:28px;font-weight:800;color:var(--success)}
.calc-result-item .num.profit{color:var(--danger)}
.calc-result-item .label{font-size:13px;color:var(--text-light);margin-top:4px}

/* ===== Footer ===== */
.footer{background:#0F172A;color:#94A3B8;padding:60px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.6;margin-bottom:8px}
.footer-col ul li{padding:4px 0;font-size:14px}
.footer-col ul li a{color:#94A3B8;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-size:22px;font-weight:800;color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px}

/* ===== Alert/Toast ===== */
.alert{padding:16px 20px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px}
.alert-success{background:rgba(16,185,129,.1);color:var(--success);border:1px solid rgba(16,185,129,.2)}
.alert-info{background:rgba(37,99,235,.1);color:var(--primary);border:1px solid rgba(37,99,235,.2)}
.alert-warning{background:rgba(245,158,11,.1);color:var(--accent-dark);border:1px solid rgba(245,158,11,.2)}
.toast{position:fixed;top:80px;right:20px;z-index:9999;padding:16px 24px;border-radius:var(--radius-sm);background:var(--surface);box-shadow:var(--shadow-lg);font-size:14px;font-weight:600;display:flex;align-items:center;gap:8px;transform:translateX(400px);transition:transform .3s}
.toast.show{transform:translateX(0)}
.toast.success{border-left:4px solid var(--success)}
.toast.error{border-left:4px solid var(--danger)}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s}
.modal-overlay.open{opacity:1;visibility:visible}
.modal{background:#fff;border-radius:var(--radius-lg);padding:40px;max-width:480px;width:90%;max-height:90vh;overflow-y:auto;transform:translateY(20px);transition:transform .3s}
.modal-overlay.open .modal{transform:translateY(0)}
.modal-close{float:right;font-size:24px;color:var(--text-muted);background:none;border:none;line-height:1}
.modal h2{font-size:24px;font-weight:800;margin-bottom:8px}
.modal .modal-subtitle{font-size:14px;color:var(--text-light);margin-bottom:24px}

/* ===== Tabs ===== */
.tabs{display:flex;gap:4px;border-bottom:2px solid var(--border);margin-bottom:24px;overflow-x:auto}
.tab{padding:12px 24px;font-size:15px;font-weight:600;color:var(--text-light);border-bottom:3px solid transparent;transition:all .2s;white-space:nowrap}
.tab.active{color:var(--primary);border-bottom-color:var(--primary)}
.tab-content{display:none}
.tab-content.active{display:block}

/* ===== Badge ===== */
.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600}
.badge-primary{background:rgba(37,99,235,.1);color:var(--primary)}
.badge-success{background:rgba(16,185,129,.1);color:var(--success)}
.badge-gold{background:rgba(251,191,36,.15);color:var(--gold-dark)}
.badge-danger{background:rgba(239,68,68,.1);color:var(--danger)}

/* ===== Responsive ===== */
@media(max-width:768px){
  .hero .container{grid-template-columns:1fr;gap:30px;text-align:center}
  .hero-text h1{font-size:32px}
  .hero-text .subtitle{font-size:16px}
  .hero-stats{justify-content:center}
  .nav{display:none}
  .header-actions .btn{display:none}
  .mobile-menu-btn{display:block}
  .section{padding:48px 0}
  .section-header h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .model-card.featured{transform:none}
  .steps::before{display:none}
  .steps{grid-template-columns:1fr}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap;gap:16px}
  .hero-stats .stat .num{font-size:24px}
}