/* ============ 基础与变量 ============ */
:root{
  --bg:#0e0b1e;
  --bg2:#15102b;
  --panel:#1b1538;
  --panel2:#241c4a;
  --line:#322a5c;
  --txt:#ece9ff;
  --txt2:#a89fd6;
  --muted:#7a72a8;
  --brand:#ff3e8f;
  --brand2:#8b5cff;
  --gold:#ffd166;
  --green:#29d398;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --grad:linear-gradient(135deg,#ff3e8f,#8b5cff);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,sans-serif;
  background:radial-gradient(1200px 600px at 80% -10%,#2a1c52 0,transparent 60%),
             radial-gradient(900px 500px at -10% 10%,#3a1140 0,transparent 55%),
             var(--bg);
  color:var(--txt);
  min-height:100%;
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select{font-family:inherit;outline:none}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px}

/* ============ 顶部通栏 ============ */
.topbar{background:rgba(0,0,0,.35);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1240px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:6px 16px;font-size:12px;color:var(--txt2)}
.topbar-links a{margin-left:16px;color:var(--txt2);transition:.2s}
.topbar-links a:hover{color:var(--brand)}

/* ============ 头部 ============ */
.header{position:sticky;top:0;z-index:50;background:rgba(15,11,30,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{max-width:1240px;margin:0 auto;display:flex;align-items:center;gap:20px;padding:14px 16px}
.logo{display:flex;align-items:center;gap:10px}
.logo-icon{font-size:30px;filter:drop-shadow(0 0 10px rgba(255,62,143,.6))}
.logo-text strong{display:block;font-size:20px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-text em{font-size:10px;color:var(--muted);font-style:normal;letter-spacing:.5px}
.search-box{flex:1;display:flex;flex-direction:column;gap:6px;max-width:620px}
.search-box>div:first-child{display:flex}
#search-cat{padding:0 12px;border:1px solid var(--line);background:var(--panel);color:var(--txt2);border-right:none;border-radius:22px 0 0 22px}
#search-input{flex:1;padding:11px 16px;border:1px solid var(--line);background:var(--panel);color:var(--txt)}
#search-input::placeholder{color:var(--muted)}
#search-btn{padding:0 26px;background:var(--grad);color:#fff;font-weight:600;border-radius:0 22px 22px 0;transition:.2s}
#search-btn:hover{filter:brightness(1.1)}
.hot-words{font-size:12px;color:var(--muted)}
.hot-words a{color:var(--txt2);margin-left:6px}
.hot-words a:hover{color:var(--brand)}
.cart-entry{position:relative;display:flex;align-items:center;gap:6px;padding:10px 18px;border:1px solid var(--line);border-radius:22px;background:var(--panel);font-weight:600;transition:.2s;white-space:nowrap}
.cart-entry:hover{border-color:var(--brand);color:var(--brand)}
.cart-badge{position:absolute;top:-6px;right:-4px;background:var(--brand);color:#fff;font-size:11px;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}

/* 主导航 */
.main-nav{border-top:1px solid var(--line)}
.nav-inner{max-width:1240px;margin:0 auto;display:flex;gap:4px;padding:0 10px;flex-wrap:wrap}
.nav-item{padding:12px 16px;font-size:15px;color:var(--txt2);position:relative;transition:.2s}
.nav-item:hover,.nav-item.active{color:var(--txt)}
.nav-item.active::after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:3px;background:var(--grad);border-radius:3px 3px 0 0}

/* ============ 通用布局 ============ */
.app{max-width:1240px;margin:0 auto;padding:22px 16px 60px;min-height:50vh}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:26px 0 16px}
.section-title h2{font-size:22px;display:flex;align-items:center;gap:10px}
.section-title h2::before{content:"";width:5px;height:22px;background:var(--grad);border-radius:3px}
.section-title a{color:var(--txt2);font-size:13px}
.section-title a:hover{color:var(--brand)}

/* ============ 轮播 ============ */
.banner{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.banner-track{display:flex;transition:transform .5s ease}
.banner-slide{min-width:100%;position:relative;height:340px;display:flex;align-items:center;padding:0 60px;color:#fff}
.banner-slide h3{font-size:34px;margin-bottom:12px}
.banner-slide p{font-size:16px;opacity:.9;margin-bottom:20px;max-width:520px}
.banner-slide .btn{padding:12px 28px;background:#fff;color:#9b1f5e;font-weight:700;border-radius:24px;display:inline-block}
.banner-dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.banner-dots span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer}
.banner-dots span.active{background:#fff;width:24px;border-radius:5px}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;background:rgba(0,0,0,.3);color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.banner-arrow:hover{background:rgba(0,0,0,.55)}
.banner-arrow.prev{left:14px}
.banner-arrow.next{right:14px}

/* ============ 分类快捷入口 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.cat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;align-items:center;gap:14px;transition:.2s}
.cat-card:hover{border-color:var(--brand2);transform:translateY(-3px);background:var(--panel2)}
.cat-card .ico{font-size:34px}
.cat-card h4{font-size:17px}
.cat-card p{font-size:12px;color:var(--muted)}

/* ============ 商品网格 ============ */
.goods-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.goods-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.goods-card:hover{border-color:var(--brand2);transform:translateY(-4px);box-shadow:var(--shadow)}
.goods-preview{position:relative;aspect-ratio:1/1;background:radial-gradient(circle at 50% 40%,#2c2150,#160f30);overflow:hidden;display:flex;align-items:center;justify-content:center}
.goods-preview .preview-play-btn{position:absolute;top:8px;left:8px;z-index:3;width:34px;height:34px;border:none;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:0;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.4);transition:transform .15s,background .15s;backdrop-filter:blur(2px)}
.goods-preview .preview-play-btn::before{content:"";display:block;width:0;height:0;margin-left:2px;border-style:solid;border-width:7px 0 7px 12px;border-color:transparent transparent transparent #fff}
.goods-preview .preview-play-btn:hover{background:var(--brand);transform:scale(1.12)}
.goods-preview .fmt-tag{position:absolute;top:8px;right:8px;background:var(--brand);color:#fff;font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}
.preview-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.fav-btn{position:absolute;bottom:8px;right:8px;width:30px;height:30px;border-radius:50%;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;font-size:16px;transition:.2s}
.fav-btn:hover{background:rgba(0,0,0,.7)}
.fav-btn.on{color:var(--brand)}
.goods-info{padding:12px;display:flex;flex-direction:column;gap:8px;flex:1}
.goods-name{font-size:14px;font-weight:600;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px;cursor:pointer}
.goods-name:hover{color:var(--brand)}
.goods-meta{display:flex;flex-wrap:wrap;gap:6px 10px;font-size:11px;color:var(--muted)}
.goods-meta b{color:var(--txt2);font-weight:500}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.goods-tag{font-size:11px;color:var(--brand2);background:rgba(139,92,255,.12);padding:2px 8px;border-radius:8px;cursor:pointer}
.goods-tag:hover{background:rgba(139,92,255,.25)}
.goods-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}
.price{color:var(--gold);font-weight:700;font-size:18px}
.price small{font-size:12px;font-weight:400}
.buy-btn{padding:7px 14px;background:var(--grad);color:#fff;border-radius:18px;font-size:13px;font-weight:600;white-space:nowrap;transition:.2s}
.buy-btn:hover{filter:brightness(1.12)}

/* ============ 列表筛选条 ============ */
.filter-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:18px}
.filter-bar .label{color:var(--txt2);font-size:13px}
.chip{padding:6px 14px;border:1px solid var(--line);border-radius:16px;font-size:13px;color:var(--txt2);transition:.2s;cursor:pointer}
.chip:hover{border-color:var(--brand2);color:var(--txt)}
.chip.active{background:var(--grad);color:#fff;border-color:transparent}
.filter-bar .spacer{flex:1}
.sort-select{padding:7px 12px;background:var(--panel2);border:1px solid var(--line);border-radius:10px;color:var(--txt2)}
.result-count{color:var(--muted);font-size:13px;margin-bottom:12px}

/* ============ 商品详情弹层 ============ */
.modal-mask{position:fixed;inset:0;background:rgba(5,3,15,.78);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.modal-mask.show{display:flex}
.modal-body{background:var(--bg2);border:1px solid var(--line);border-radius:18px;max-width:940px;width:100%;max-height:90vh;overflow:auto;box-shadow:var(--shadow)}

/* 顶部「动画预览」按钮 */
.topbar-preview-btn{display:inline-flex;align-items:center;gap:4px;background:var(--grad);color:#fff;border-radius:10px;padding:4px 12px;font-size:12px;font-weight:600;white-space:nowrap;box-shadow:0 2px 10px rgba(255,62,143,.35);transition:.2s}
.topbar-preview-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.topbar-preview-btn.on{outline:2px solid var(--gold);outline-offset:1px}

/* 视频实际分辨率预览弹层 */
#video-modal{z-index:300}
.video-modal-body{position:relative;background:#000;border-radius:14px;overflow:hidden;max-width:96vw;max-height:92vh;box-shadow:var(--shadow);display:flex;flex-direction:column}
.video-modal-body video{display:block;width:100%;height:auto;max-width:96vw;max-height:88vh;background:#000}
.video-modal-body .video-cap{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;background:linear-gradient(transparent,rgba(0,0,0,.75));color:#fff;font-size:13px;pointer-events:none}
.goods-preview{cursor:pointer}
.detail-wrap{display:grid;grid-template-columns:1fr 1fr}
.detail-stage{position:relative;aspect-ratio:1/1;background:radial-gradient(circle at 50% 45%,#2c2150,#160f30);display:flex;align-items:center;justify-content:center;border-right:1px solid var(--line);overflow:hidden}
.detail-info{padding:24px;display:flex;flex-direction:column;gap:14px}
.detail-info h2{font-size:22px}
.detail-price{font-size:28px;color:var(--gold);font-weight:800}
.detail-price small{font-size:14px;font-weight:400}
.spec-block .spec-label{font-size:13px;color:var(--txt2);margin-bottom:8px}
.spec-opts{display:flex;gap:8px;flex-wrap:wrap}
.spec-opt{padding:8px 16px;border:1px solid var(--line);border-radius:10px;font-size:13px;color:var(--txt2);cursor:pointer;transition:.2s}
.spec-opt:hover{border-color:var(--brand2)}
.spec-opt.active{background:var(--grad);color:#fff;border-color:transparent}
.detail-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;font-size:13px;color:var(--txt2);background:var(--panel);padding:14px;border-radius:12px}
.detail-meta div b{color:var(--txt);font-weight:500}
.qty{display:flex;align-items:center;gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;width:fit-content}
.qty button{width:36px;height:36px;background:var(--panel);font-size:18px;color:var(--txt)}
.qty input{width:54px;height:36px;text-align:center;background:var(--bg2);color:var(--txt);border:none;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.detail-actions{display:flex;gap:12px;margin-top:6px}
.detail-actions .buy-btn{flex:1;padding:13px;font-size:15px;border-radius:12px}
.btn-ghost{flex:1;padding:13px;font-size:15px;border-radius:12px;border:1px solid var(--line);color:var(--txt2);transition:.2s}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.detail-tags{display:flex;flex-wrap:wrap;gap:6px}
.modal-close{position:absolute;top:12px;right:14px;font-size:26px;color:var(--txt2);z-index:5;width:40px;height:40px;border-radius:50%;background:rgba(0,0,0,.4)}
.modal-close:hover{color:#fff}
.detail-desc{font-size:13px;color:var(--txt2);line-height:1.7;background:var(--panel);padding:14px;border-radius:12px}

/* ============ 购物车 / 结算 ============ */
.page-head{margin-bottom:18px}
.page-head h1{font-size:26px;display:flex;align-items:center;gap:10px}
.page-head h1::before{content:"";width:6px;height:24px;background:var(--grad);border-radius:3px}
.cart-list{display:flex;flex-direction:column;gap:14px}
.cat-counts{display:flex;gap:8px;flex-wrap:wrap}
.cat-count{font-size:12px;padding:5px 12px;border-radius:20px;background:var(--bg2);border:1px solid var(--line);color:var(--txt);white-space:nowrap}
.cat-count.full{background:#fff1f0;border-color:#ffccc7;color:#cf1322;font-weight:700}
.cart-item{display:flex;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.cart-thumb{width:90px;height:90px;border-radius:12px;flex-shrink:0;background:radial-gradient(circle at 50% 40%,#2c2150,#160f30);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.cart-item .ci-name{font-size:16px;font-weight:600;cursor:pointer}
.cart-item .ci-name:hover{color:var(--brand)}
.cart-item .ci-meta{font-size:12px;color:var(--muted)}
.cart-item .ci-tags{display:flex;gap:5px;margin-top:4px}
.cart-item .ci-tags span{font-size:11px;color:var(--brand2);background:rgba(139,92,255,.12);padding:1px 7px;border-radius:7px}
.ci-spacer{flex:1}
.ci-price{color:var(--gold);font-weight:700;font-size:17px;min-width:90px;text-align:right}
.ci-remove{color:var(--muted);font-size:13px;cursor:pointer;padding:6px}
.ci-remove:hover{color:var(--brand)}
.checkout-bar{position:sticky;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin-top:20px;box-shadow:var(--shadow)}
.checkout-bar .total{font-size:15px;color:var(--txt2)}
.checkout-bar .total b{color:var(--gold);font-size:26px;margin-left:8px}
.btn-primary{padding:13px 34px;background:var(--grad);color:#fff;font-weight:700;border-radius:24px;font-size:15px;transition:.2s}
.btn-primary:hover{filter:brightness(1.12)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed}
.empty{padding:70px 20px;text-align:center;color:var(--muted)}
.empty .big{font-size:56px;margin-bottom:14px}
.empty a{color:var(--brand);margin-top:14px;display:inline-block}

/* 结算页 */
.checkout-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:20px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.panel h3{font-size:17px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;color:var(--txt2);margin-bottom:6px}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:11px 14px;background:var(--bg2);border:1px solid var(--line);border-radius:10px;color:var(--txt)}
.pay-opt{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;cursor:pointer;transition:.2s}
.pay-opt:hover{border-color:var(--brand2)}
.pay-opt.active{border-color:var(--brand);background:rgba(255,62,143,.08)}
.pay-opt .p-ico{font-size:22px}
.order-summary .os-item{display:flex;justify-content:space-between;font-size:13px;color:var(--txt2);padding:6px 0}
.order-summary .os-total{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:10px;padding-top:12px;font-size:16px}
.order-summary .os-total b{color:var(--gold);font-size:22px}

/* 定制页 */
.custom-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.custom-feature{display:flex;gap:12px;margin-bottom:16px}
.custom-feature .cf-ico{font-size:26px}
.custom-feature h4{font-size:15px}
.custom-feature p{font-size:13px;color:var(--muted)}

/* 帮助页 */
.help-list{max-width:800px}
.help-list .qa{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px}
.help-list .qa h4{font-size:15px;margin-bottom:6px;color:var(--brand2)}
.help-list .qa p{font-size:13px;color:var(--txt2)}

/* ============ 动画预览(模拟礼物特效) ============ */
.anim-stage{position:relative;width:78%;height:78%;display:flex;align-items:center;justify-content:center}
.float-emoji{font-size:46px;position:absolute;animation:floatUp 2.6s ease-in-out infinite}
.float-emoji:nth-child(2){animation-delay:.4s;left:18%}
.float-emoji:nth-child(3){animation-delay:.9s;right:18%}
.float-emoji:nth-child(4){animation-delay:1.3s;left:35%}
.float-emoji:nth-child(5){animation-delay:1.7s;right:30%}
@keyframes floatUp{0%{transform:translateY(20px) scale(.6);opacity:0}25%{opacity:1}100%{transform:translateY(-46px) scale(1.1);opacity:0}}
.center-burst{font-size:60px;animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(.85);filter:drop-shadow(0 0 6px currentColor)}50%{transform:scale(1.12);filter:drop-shadow(0 0 22px currentColor)}}
.ring{position:absolute;width:60px;height:60px;border:3px solid;border-radius:50%;animation:ring 1.6s ease-out infinite;opacity:0}
.ring:nth-child(2){animation-delay:.5s}
.ring:nth-child(3){animation-delay:1s}
@keyframes ring{0%{transform:scale(.3);opacity:.9}100%{transform:scale(2.6);opacity:0}}
.avatar-frame{width:120px;height:120px;border-radius:50%;border:5px solid;display:flex;align-items:center;justify-content:center;font-size:46px;animation:spinBorder 4s linear infinite;background:radial-gradient(circle,#2c2150,#160f30)}
@keyframes spinBorder{0%{box-shadow:0 0 0 0 currentColor}50%{box-shadow:0 0 24px 4px currentColor}100%{box-shadow:0 0 0 0 currentColor}}
.confetti{position:absolute;width:8px;height:14px;border-radius:2px;animation:fall 2.2s linear infinite}
.confetti:nth-child(2){left:20%;background:var(--brand);animation-delay:.3s}
.confetti:nth-child(3){left:40%;background:var(--gold);animation-delay:.6s}
.confetti:nth-child(4){left:60%;background:var(--brand2);animation-delay:.9s}
.confetti:nth-child(5){left:80%;background:var(--green);animation-delay:1.2s}
@keyframes fall{0%{transform:translateY(-30px) rotate(0);opacity:0}20%{opacity:1}100%{transform:translateY(60px) rotate(360deg);opacity:0}}

/* ============ Toast ============ */
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:rgba(20,14,40,.96);border:1px solid var(--brand);color:#fff;padding:12px 22px;border-radius:24px;font-size:14px;opacity:0;pointer-events:none;transition:.3s;z-index:300;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 页脚 ============ */
.footer{border-top:1px solid var(--line);background:rgba(0,0,0,.3);margin-top:40px}
.footer-inner{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:36px 16px 24px}
.footer-col h4{font-size:15px;margin-bottom:12px}
.footer-col p,.footer-col a{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;transition:.2s}
.footer-col a:hover{color:var(--brand)}
.copyright{text-align:center;font-size:12px;color:var(--muted);padding:16px;border-top:1px solid var(--line)}

/* ============ 响应式 ============ */
@media(max-width:1100px){
  .goods-grid{grid-template-columns:repeat(4,1fr)}
  .checkout-grid,.custom-grid,.detail-wrap{grid-template-columns:1fr}
  .detail-stage{border-right:none;border-bottom:1px solid var(--line)}
}
@media(max-width:820px){
  .goods-grid{grid-template-columns:repeat(3,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .header-inner{flex-wrap:wrap}
  .search-box{order:3;max-width:none;width:100%}
  .footer-inner{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .goods-grid{grid-template-columns:repeat(2,1fr)}
  .banner-slide h3{font-size:24px}
  .banner-slide{padding:0 24px}
}