/* 韵达优选 · 浅色明亮主题 */
:root{
  --blue:#2f6fed; --blue-d:#1d4ed8; --ink:#1f2937; --muted:#6b7280;
  --line:#e5e7eb; --bg:#f6f8fc; --card:#ffffff; --ok:#16a34a; --gold:#d97706;
}
*{box-sizing:border-box;margin:0;padding:0}
html{min-height:100%}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;
  min-height:100vh;display:flex;flex-direction:column}
body > .topbar{flex-shrink:0}
body > .wrap{flex:1 0 auto}          /* 主内容区撑开，把页脚推到底部 */
body > .footer{flex-shrink:0}
a{color:var(--blue);text-decoration:none}
img{max-width:100%;display:block;border-radius:10px}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.muted{color:var(--muted);font-size:13px}

/* 顶栏 */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;
  box-shadow:0 1px 6px rgba(0,0,0,.04)}
.nav{display:flex;align-items:center;gap:18px;height:60px;flex-wrap:wrap}
.brand{font-size:22px;font-weight:800;color:var(--blue);display:flex;align-items:baseline;gap:6px}
.brand .slogan{font-size:12px;color:var(--muted);font-weight:400}
.menu{margin-left:auto;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.menu a{color:var(--ink);font-size:14px;padding:6px 4px;border-bottom:2px solid transparent;
  cursor:pointer}
.menu a:hover{color:var(--blue)}
.menu a.active{color:var(--blue);border-bottom-color:var(--blue)}
.menu a.u{color:var(--blue);font-weight:600}
.vip-badge{background:linear-gradient(90deg,#f59e0b,#d97706);color:#fff;font-size:11px;
  padding:1px 6px;border-radius:6px;font-weight:700;cursor:pointer;pointer-events:none}
.cart-badge{background:#dc2626;color:#fff;font-size:10px;padding:0 5px;border-radius:8px;
  font-weight:700;margin-left:2px;vertical-align:super;line-height:1.4;pointer-events:none}

/* 首页：左侧分类 + 右侧轮播（淘宝风格） */
.hero-row{display:flex;align-items:stretch;gap:14px;margin:16px 0 24px}
.cat-sidebar{width:212px;flex-shrink:0;background:#fff;border-radius:14px;padding:10px;
  box-shadow:0 4px 18px rgba(30,58,138,.06);display:flex;flex-direction:column}
.cat-sidebar-title{font-size:13px;font-weight:700;color:var(--muted);padding:6px 10px 8px}
.cat-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  color:var(--ink);font-size:13px;transition:background .15s,color .15s;cursor:pointer;
  position:relative;text-decoration:none}
.cat-item:hover{background:#eef2ff;color:var(--blue)}
.cat-item.has-sub:hover{border-radius:10px 10px 0 0}
.cat-icon{font-size:20px;line-height:1}
.cat-item span{font-size:13px;white-space:nowrap}

/* 子分类悬浮面板（仿韵达集采） */
.cat-sub-panel{display:none;position:absolute;left:100%;top:0;min-width:180px;
  background:#fff;border-radius:0 12px 12px 12px;box-shadow:0 8px 28px rgba(30,58,138,.12);
  padding:8px 0;z-index:50;flex-direction:column;gap:2px}
.cat-item.has-sub:hover .cat-sub-panel{display:flex}
.cat-sub-item{display:block;padding:9px 16px;font-size:13px;color:var(--ink);
  text-decoration:none;transition:background .12s;white-space:nowrap}
.cat-sub-item:hover{background:#f0f4ff;color:var(--blue)}

/* 轮播图 */
.carousel{position:relative;border-radius:16px;overflow:hidden;flex:1;min-width:0;
  background:linear-gradient(120deg,#eaf1ff,#f6f8fc);height:320px}
.carousel-track{display:flex;height:100%;animation:slide 16s ease-in-out infinite}
.carousel:hover .carousel-track{animation-play-state:paused}
.slide{min-width:100%;position:relative;height:100%;background:#4a86e8}
.slide img{width:100%;height:100%;object-fit:contain;padding:22px}
.slide-text{position:absolute;left:0;bottom:0;right:0;padding:26px 30px;
  background:linear-gradient(transparent,rgba(0,0,0,.7));color:#fff}
.slide-text b{font-size:20px;line-height:1.35;display:block;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@keyframes slide{
  0%,21%{transform:translateX(0)}
  25%,46%{transform:translateX(-100%)}
  50%,71%{transform:translateX(-200%)}
  75%,96%{transform:translateX(-300%)}
  100%{transform:translateX(0)}
}
@media(max-width:640px){
  .hero-row{flex-direction:column;gap:10px}
  .cat-sidebar{width:100%;flex-direction:row;flex-wrap:nowrap;overflow-x:auto}
  .cat-sidebar-title{display:none}
  .cat-item{white-space:nowrap}
  .slide{height:180px}
  .slide-text{padding:16px 20px}
  .slide-text b{font-size:17px}
}

/* hero（保留备用） */
.hero{background:linear-gradient(120deg,#eaf1ff,#f6f8fc);border-radius:16px;
  padding:42px 32px;margin:24px 0;animation:fade .5s ease}
.hero h1{font-size:30px;margin-bottom:10px}
.hero p{color:var(--muted);max-width:680px}
.hero-btns{margin-top:18px;display:flex;gap:12px}
.btn{display:inline-block;background:var(--blue);color:#fff;border:none;padding:10px 18px;
  border-radius:10px;cursor:pointer;font-size:14px;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(47,111,237,.25)}
.btn.primary{background:var(--blue)}
.btn.sm{padding:5px 12px;font-size:13px}
.btn.danger{background:#dc2626;color:#fff;border-color:#dc2626}
.btn.danger:hover{background:#b91c1c;box-shadow:0 6px 16px rgba(220,38,38,.25)}
.btn:not(.primary){background:#fff;color:var(--blue);border:1px solid var(--blue)}

/* section */
.sec-head{display:flex;align-items:center;justify-content:space-between;margin:26px 0 12px}
.sec-head h2{font-size:20px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}

/* card */
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;animation:rise .4s ease;
  display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(30,58,138,.12)}
.card > img{width:100%;aspect-ratio:1/1;height:auto;object-fit:cover;display:block;
  background:#f1f5f9;transition:transform .35s ease}
.card:hover > img{transform:scale(1.05)}
.c-body{padding:14px 15px 16px;display:flex;flex-direction:column;flex:1;gap:3px}
.c-body h3{font-size:15px;line-height:1.4;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:42px}
.c-body .spec{font-size:12.5px;color:var(--muted);margin:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.c-body .price{color:var(--gold);font-weight:800;font-size:17px;margin:4px 0 0;padding-top:6px;
  border-top:1px dashed #eef2f7}
.c-body .preview{font-size:12px;color:var(--muted);margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 商城分类筛选栏 */
.cat-bar-filter{display:flex;flex-wrap:wrap;gap:10px;background:#fff;border-radius:14px;
  padding:12px 14px;margin:8px 0 4px;box-shadow:0 4px 18px rgba(30,58,138,.06)}
.cat-tab{display:inline-flex;align-items:center;gap:5px;padding:8px 14px;border-radius:20px;
  font-size:13px;color:var(--ink);background:#f3f5fb;transition:all .15s;white-space:nowrap}
.cat-tab:hover{background:#e6edff;color:var(--blue)}
.cat-tab.active{background:var(--blue);color:#fff;font-weight:600}
.cat-tab.active:hover{background:var(--blue)}

/* 商家 */
.m-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.m-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;
  display:flex;flex-direction:column;gap:6px;transition:border-color .15s}
.m-card:hover{border-color:var(--blue)}
.m-card b{font-size:15px}
.m-card span{font-size:13px;color:var(--muted)}

/* 详情 */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:24px 0;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;animation:fade .4s}
@media(max-width:720px){.detail{grid-template-columns:1fr}}
.detail h1{font-size:22px;margin-bottom:8px}
.detail .price{color:var(--gold);font-size:26px;font-weight:800;margin:8px 0}
.detail .spec,.detail .stock{color:var(--muted);font-size:14px}
.detail .desc{margin:10px 0}
.buy{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap;margin-top:10px}
.buy input{width:70px;padding:8px;border:1px solid var(--line);border-radius:8px}
.store-head{margin:24px 0 6px}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);
  border-radius:12px;overflow:hidden;margin:10px 0}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
.tbl th{background:#f3f6fc;color:var(--muted);font-weight:600}
.total{margin:12px 0;font-size:16px}
.qty{display:flex;gap:6px;align-items:center}
.qty input{width:60px;padding:6px;border:1px solid var(--line);border-radius:8px}
.checkout{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:8px}
.checkout input{flex:1;min-width:220px;padding:10px;border:1px solid var(--line);border-radius:8px}

/* 表单 */
.form-box{max-width:560px;margin:28px auto;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:34px 36px;animation:fade .4s;box-sizing:border-box}
.form-box.center{text-align:center}
.form-box h2{font-size:22px;margin-bottom:14px}
.form-box h3{margin:18px 0 8px;font-size:16px}
.form-box label{display:block;text-align:left;margin:14px 0;font-size:14px;color:var(--muted)}
.form-box input,.form-box textarea{width:100%;box-sizing:border-box;margin-top:6px;padding:12px 14px;
  border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;
  transition:border-color .15s,box-shadow .15s}
.form-box input:focus,.form-box textarea:focus{outline:none;border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.form-box .btn{margin-top:18px;width:100%;padding:12px;font-size:15px}
.form-box .agree-tip{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.6}
.form-box .agree-tip a{color:var(--blue)}
.form-box label.agree{display:flex;align-items:center;gap:6px;text-align:left;font-size:13px;line-height:1.5}
.form-box label.agree input[type=checkbox]{width:auto;margin:0}
.form-box.doc{max-width:820px}
.form-box.doc p{margin:8px 0;line-height:1.8;color:var(--ink)}
.form-box.doc h3{margin-top:22px;border-left:3px solid var(--blue);padding-left:8px}
.ok{color:var(--ok);font-weight:600;background:#ecfdf5;padding:6px 10px;border-radius:8px;display:inline-block}
.price.big{font-size:32px;color:var(--gold)}

/* 弹窗提示（toast modal） */
.toast-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;
  align-items:center;justify-content:center;z-index:999;animation:fade .18s ease}
.toast-box{background:#fff;border-radius:16px;padding:28px 34px;min-width:300px;max-width:90vw;
  text-align:center;box-shadow:0 18px 50px rgba(0,0,0,.28);animation:rise .25s ease}
.toast-box .ic{width:56px;height:56px;border-radius:50%;margin:0 auto 14px;display:flex;
  align-items:center;justify-content:center;font-size:30px;color:#fff}
.toast-box.ok .ic{background:var(--ok)}
.toast-box.err .ic{background:var(--red,#dc2626)}
.toast-box .tx{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:18px;line-height:1.5}
.toast-box .btn{cursor:pointer}

/* 购物车 / 账户容器放大 */
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px 48px;
  margin:24px 0;box-shadow:0 4px 18px rgba(30,58,138,.06)}
.panel h2{font-size:22px;margin-bottom:14px}
.form-box.wide{max-width:900px}
.tbl.big th,.tbl.big td{padding:14px 16px;font-size:15px}
.tbl.big th{font-size:14px}

/* 支付二维码页面 */
.pay-wrap{max-width:760px}
.pay-box{display:flex;gap:40px;align-items:center;flex-wrap:wrap;margin-top:10px}
.pay-qr{flex:0 0 auto;text-align:center}
.pay-qr img{width:240px;height:240px;border:1px solid var(--line);border-radius:14px;background:#fff;padding:8px}
.pay-info{flex:1 1 280px;min-width:240px}
.pay-amount{font-size:34px;font-weight:800;color:var(--blue);margin:6px 0 4px}
.pay-kind{display:inline-block;background:#eef3ff;color:var(--blue);font-size:13px;
  padding:3px 10px;border-radius:8px;margin:6px 0}
.pay-actions{display:flex;gap:12px;align-items:center;margin-top:18px}
.pay-tip{margin-top:14px;font-size:12px;line-height:1.6}



/* 文章 / 付费墙 */
.article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;margin:24px 0;animation:fade .4s}
.a-head{display:flex;gap:18px;align-items:center;margin-bottom:14px}
.a-head img{width:110px;height:110px;object-fit:cover;border-radius:10px;background:var(--line)}
.article-full{white-space:pre-wrap;font-size:15px;line-height:1.9;
  border-left:3px solid var(--blue);padding-left:14px;margin:10px 0}
.locked{color:var(--muted)}
.paywall{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:16px;margin-top:14px}
.paywall .payrow{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}

/* 页脚 */
.footer{background:#0f172a;color:#cbd5e1;margin-top:48px;padding:30px 0}
.footer a{color:#93c5fd}
.footer h4{color:#fff;margin-bottom:8px;font-size:15px}
.f-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:720px){.f-cols{grid-template-columns:1fr}}
.footer p{font-size:13px;margin:3px 0}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}