/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#e2e8f0;background:#0b0f1a;line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Gradient helpers ===== */
.gradient-text{background:linear-gradient(135deg,#7c3aed,#a78bfa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:10px;font-weight:600;font-size:15px;transition:all .3s}
.btn-gradient{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;box-shadow:0 4px 20px rgba(124,58,237,.35)}
.btn-gradient:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(124,58,237,.5)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.25);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.btn-block{width:100%;padding:16px;font-size:16px;border-radius:12px}
.btn-sm{padding:8px 20px;font-size:13px;border-radius:8px}

/* ===== Navbar ===== */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(11,15,26,.7);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.06);transition:all .3s}
.navbar.scrolled{background:rgba(11,15,26,.95);box-shadow:0 4px 30px rgba(0,0,0,.3)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff}
.logo em{font-style:normal;color:#a78bfa}
.nav-links{display:flex;gap:32px}
.nav-links a{font-size:14px;font-weight:500;color:rgba(255,255,255,.6);transition:color .3s;position:relative}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a.active::after{content:'';position:absolute;bottom:-6px;left:0;right:0;height:2px;background:linear-gradient(90deg,#7c3aed,#a855f7);border-radius:1px}
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:4px}
.mobile-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;padding:150px 0 90px;text-align:center;overflow:hidden;background:linear-gradient(160deg,#0b0f1a 0%,#1a1040 40%,#0f172a 100%)}
.hero-particles{position:absolute;inset:0;background:radial-gradient(circle at 25% 40%,rgba(124,58,237,.2) 0%,transparent 50%),radial-gradient(circle at 75% 30%,rgba(168,85,247,.15) 0%,transparent 40%),radial-gradient(circle at 50% 80%,rgba(99,102,241,.1) 0%,transparent 40%)}
.hero h1{font-size:52px;font-weight:900;line-height:1.2;margin-bottom:16px;color:#fff}
.hero-tagline{font-size:18px;letter-spacing:6px;color:rgba(255,255,255,.5);font-weight:500;margin-bottom:12px}
.hero-desc{font-size:16px;color:rgba(255,255,255,.55);max-width:600px;margin:0 auto 36px}
.hero-btns{display:flex;gap:16px;justify-content:center;margin-bottom:56px}
.hero-stats{display:flex;justify-content:center;gap:56px;padding-top:40px;border-top:1px solid rgba(255,255,255,.08)}
.hero-stats div{text-align:center}
.hero-stats strong{display:block;font-size:30px;font-weight:900;background:linear-gradient(135deg,#a78bfa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.4);margin-top:4px;display:block}

/* ===== Sections ===== */
.section{padding:80px 0}
.section-title{text-align:center;font-size:30px;font-weight:800;color:#fff;margin-bottom:48px}

/* ===== Filter Bar ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:28px}
.filter-btn{padding:8px 18px;border-radius:50px;font-size:13px;font-weight:500;color:rgba(255,255,255,.55);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);transition:all .3s}
.filter-btn:hover{color:#fff;border-color:rgba(124,58,237,.5);background:rgba(124,58,237,.1)}
.filter-btn.active{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;border-color:transparent;box-shadow:0 2px 12px rgba(124,58,237,.3)}

/* ===== Product Table ===== */
.table-wrap{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px;overflow:hidden}
.product-table{width:100%;border-collapse:collapse}
.product-table thead{background:linear-gradient(135deg,#7c3aed,#6d28d9)}
.product-table th{padding:14px 20px;text-align:left;color:#fff;font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.5px}
.product-table td{padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.04);vertical-align:middle}
.product-table tbody tr{transition:background .2s}
.product-table tbody tr:hover{background:rgba(124,58,237,.06)}
.product-table tbody tr:last-child td{border-bottom:none}
.p-title{font-weight:600;color:#fff;font-size:14px;margin-bottom:4px}
.p-title a{color:#fff;transition:color .2s}
.p-title a:hover{color:#a78bfa}
.p-desc{font-size:12px;color:rgba(255,255,255,.35);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:480px;line-height:1.6}
.stock-tag{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:50px;font-size:12px;font-weight:500;background:rgba(16,185,129,.12);color:#34d399;border:1px solid rgba(16,185,129,.2)}
.stock-tag::before{content:'';width:6px;height:6px;border-radius:50%;background:#34d399}
.p-price{font-size:22px;font-weight:800;color:#a78bfa;white-space:nowrap}
.btn-buy{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;padding:8px 22px;font-size:13px;font-weight:600;border-radius:8px;transition:all .3s;box-shadow:0 2px 10px rgba(124,58,237,.25)}
.btn-buy:hover{transform:translateY(-1px);box-shadow:0 4px 18px rgba(124,58,237,.4)}

/* ===== Feature Cards ===== */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:36px 24px;text-align:center;transition:all .3s}
.card:hover{transform:translateY(-4px);border-color:rgba(124,58,237,.3);box-shadow:0 8px 40px rgba(124,58,237,.1)}
.card-icon{font-size:36px;margin-bottom:16px}
.card h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:10px}
.card p{font-size:13px;color:rgba(255,255,255,.45);line-height:1.7}

/* ===== FAQ ===== */
.faq{background:rgba(255,255,255,.01)}
.faq-list{max-width:780px;margin:0 auto}
.faq-item{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 22px;font-size:15px;font-weight:600;color:#fff;text-align:left;transition:color .3s}
.faq-q:hover{color:#a78bfa}
.faq-q span{font-size:20px;color:#7c3aed;transition:transform .3s;flex-shrink:0;width:24px;text-align:center}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s}
.faq-item.open .faq-a{max-height:200px}
.faq-a p{padding:0 22px 18px;font-size:14px;color:rgba(255,255,255,.5);line-height:1.8}

/* ===== Footer ===== */
.footer{background:#060810;border-top:1px solid rgba(255,255,255,.05);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px}
.footer-about .logo{margin-bottom:14px}
.footer-about p{font-size:13px;color:rgba(255,255,255,.35);line-height:1.8}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer li{margin-bottom:8px;font-size:13px;color:rgba(255,255,255,.35)}
.footer a{transition:color .3s}
.footer a:hover{color:#a78bfa}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding:18px 0;text-align:center;font-size:12px;color:rgba(255,255,255,.25)}

/* ===== Detail Page ===== */
.detail-page{padding:100px 0 60px;min-height:80vh}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.4);margin-bottom:28px}
.breadcrumb a{color:rgba(255,255,255,.5);transition:color .3s}
.breadcrumb a:hover{color:#a78bfa}
.detail-layout{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start}
.detail-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:32px;margin-bottom:28px}
.detail-title{font-size:24px;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.4}
.detail-price{font-size:36px;font-weight:900;color:#a78bfa;margin-bottom:20px}
.detail-price small{font-size:16px;color:rgba(255,255,255,.4);font-weight:400}
.detail-attrs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.06)}
.attr-tag{padding:6px 14px;border-radius:8px;font-size:13px;font-weight:500;background:rgba(124,58,237,.1);color:#c4b5fd;border:1px solid rgba(124,58,237,.2)}

/* Buy Section */
.buy-section h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:20px;padding-top:4px}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:14px;font-weight:500;color:rgba(255,255,255,.7);margin-bottom:8px}
.req{color:#f87171}
.form-row input[type="email"],.form-row input[type="text"]{width:100%;padding:12px 16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;color:#fff;font-size:14px;font-family:inherit;transition:border-color .3s}
.form-row input:focus{outline:none;border-color:#7c3aed;background:rgba(124,58,237,.05)}
.form-row input::placeholder{color:rgba(255,255,255,.25)}
.qty-wrap{display:flex;align-items:center;gap:0}
.qty-btn{width:40px;height:40px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#fff;font-size:18px;font-weight:600;display:flex;align-items:center;justify-content:center;transition:all .2s}
.qty-btn:first-child{border-radius:10px 0 0 10px}
.qty-btn:last-child{border-radius:0 10px 10px 0}
.qty-btn:hover{background:rgba(124,58,237,.2);border-color:rgba(124,58,237,.3)}
#qtyInput{width:60px;height:40px;text-align:center;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-left:none;border-right:none;color:#fff;font-size:15px;font-weight:600;font-family:inherit;-moz-appearance:textfield}
#qtyInput::-webkit-outer-spin-button,#qtyInput::-webkit-inner-spin-button{-webkit-appearance:none}

/* Payment Grid */
.pay-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.pay-option{display:flex;align-items:center;gap:10px;padding:12px 14px;background:rgba(255,255,255,.04);border:1.5px solid rgba(255,255,255,.08);border-radius:10px;cursor:pointer;transition:all .3s;font-size:13px;font-weight:500;color:rgba(255,255,255,.6)}
.pay-option:hover{border-color:rgba(124,58,237,.4);color:#fff}
.pay-option.selected{border-color:#7c3aed;background:rgba(124,58,237,.1);color:#c4b5fd}
.pay-option input{display:none}
.pay-icon{font-size:20px}

.total-bar{display:flex;justify-content:space-between;align-items:center;padding:18px 0;margin:20px 0;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.total-bar span{font-size:15px;color:rgba(255,255,255,.6)}
.total-bar strong{font-size:30px;font-weight:900;color:#a78bfa}

/* Detail Description */
.detail-desc-section{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:32px}
.detail-desc-section h2{font-size:20px;font-weight:700;color:#fff;margin-bottom:20px}
.detail-desc-content p{font-size:14px;color:rgba(255,255,255,.5);line-height:2;margin-bottom:16px}

/* Sidebar */
.detail-sidebar h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.sidebar-sub{font-size:13px;color:rgba(255,255,255,.35);margin-bottom:20px}
.related-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:20px;margin-bottom:14px;transition:all .3s}
.related-card:hover{border-color:rgba(124,58,237,.3);transform:translateY(-2px)}
.related-card h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:8px;line-height:1.5}
.related-card .r-desc{font-size:12px;color:rgba(255,255,255,.35);line-height:1.6;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .r-bottom{display:flex;justify-content:space-between;align-items:center}
.related-card .r-price{font-size:18px;font-weight:800;color:#a78bfa}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;z-index:2000;background:rgba(0,0,0,.6);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s}
.modal-overlay.active{opacity:1;visibility:visible}
.modal{background:#1a1f2e;border:1px solid rgba(255,255,255,.08);border-radius:20px;width:90%;max-width:480px;max-height:90vh;overflow-y:auto;position:relative;transform:translateY(20px);transition:transform .3s;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.modal-overlay.active .modal{transform:translateY(0)}
.modal-close{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.06);font-size:18px;color:rgba(255,255,255,.5);display:flex;align-items:center;justify-content:center;z-index:1;transition:all .3s}
.modal-close:hover{background:rgba(255,255,255,.12);color:#fff}
.order-success{text-align:center;padding:40px 32px}
.order-success-icon{font-size:56px;margin-bottom:16px}
.order-success h3{font-size:22px;font-weight:700;color:#34d399;margin-bottom:16px}
.order-success .order-no{font-size:16px;font-weight:700;color:#a78bfa;padding:12px;background:rgba(124,58,237,.1);border:1px solid rgba(124,58,237,.2);border-radius:10px;margin:16px 0}
.order-success p{font-size:14px;color:rgba(255,255,255,.5);line-height:1.8;margin-bottom:6px}
.order-success p strong{color:rgba(255,255,255,.8)}

/* ===== Responsive ===== */
@media(max-width:1024px){
    .cards{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .detail-layout{grid-template-columns:1fr}
}
@media(max-width:768px){
    .nav-links{display:none;flex-direction:column;position:absolute;top:68px;left:0;right:0;background:rgba(11,15,26,.98);padding:20px;gap:14px;border-bottom:1px solid rgba(255,255,255,.06)}
    .nav-links.open{display:flex}
    .mobile-toggle{display:flex}
    .hero{padding:120px 0 60px}
    .hero h1{font-size:30px}
    .hero-tagline{font-size:14px;letter-spacing:3px}
    .hero-stats{flex-wrap:wrap;gap:20px}
    .hero-stats strong{font-size:22px}
    .hero-btns{flex-direction:column;align-items:center}
    .section-title{font-size:24px}
    .cards{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .table-wrap{overflow-x:auto}
    .product-table{min-width:680px}
    .filter-bar{gap:6px}
    .filter-btn{padding:6px 12px;font-size:12px}
    .detail-card{padding:24px 18px}
    .pay-grid{grid-template-columns:1fr}
}