/* =============================================
   ShangChen Mall - Mobile-first Stylesheet
   ============================================= */

:root {
  --primary: #FF4D4F;
  --primary-dark: #E03E3E;
  --primary-light: #FFF1F0;
  --accent: #FF8C00;
  --text: #333;
  --text-light: #888;
  --text-lighter: #bbb;
  --bg: #f5f5f5;
  --white: #fff;
  --border: #eee;
  --border-dark: #ddd;
  --success: #52c41a;
  --warning: #faad14;
  --danger: #ff4d4f;
  --info: #1890ff;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --tabbar-h: 56px;
  --header-h: 50px;
}

/* ── Reset ── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:14px; -webkit-text-size-adjust:100%; }
body {
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color: var(--text);
  background: var(--bg);
  padding-bottom: calc(var(--tabbar-h) + 10px);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}
a { color: var(--text); text-decoration: none; }
img { max-width: 100%; vertical-align: middle; }
ul,ol { list-style: none; }
input,button,textarea,select { font:inherit; border:none; outline:none; }
button { cursor:pointer; }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance:none; margin:0; }
input[type="number"] { -moz-appearance:textfield; }

/* ── Page Header ── */
.sc-header {
  position: fixed; top:0; left:0; right:0; z-index:100;
  height: var(--header-h);
  background: var(--primary);
  display: flex; align-items: center; padding: 0 12px; gap: 10px;
}
.sc-header .logo { height:28px; }
.sc-header .logo img { height:100%; }
.sc-header-back {
  width:28px; height:28px; display:flex; align-items:center; justify-content:center;
}
.sc-header-back svg { width:20px; height:20px; fill:#fff; }
.sc-header-title {
  flex:1; color:#fff; font-size:16px; font-weight:600;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.sc-search-bar {
  flex:1; height:34px; background:rgba(255,255,255,.9); border-radius:17px;
  display:flex; align-items:center; padding:0 12px; gap:6px;
}
.sc-search-bar svg { width:16px; height:16px; fill:#999; flex-shrink:0; }
.sc-search-bar input {
  flex:1; background:none; font-size:13px; color:var(--text);
}
.sc-search-bar input::placeholder { color:#bbb; }
.sc-header-right { display:flex; gap:8px; align-items:center; }
.sc-header-right a { color:#fff; font-size:12px; }

/* lang switcher */
.sc-lang-switch {
  position:relative; display:inline-block;
}
.sc-lang-switch select {
  appearance:none; -webkit-appearance:none;
  background:rgba(255,255,255,.2); color:#fff;
  border:1px solid rgba(255,255,255,.4); border-radius:4px;
  padding:3px 20px 3px 8px; font-size:12px; cursor:pointer;
}
.sc-lang-switch select option {
  color:var(--text); background:var(--white);
}
.sc-lang-switch::after {
  content:'▾'; position:absolute; right:6px; top:50%;
  transform:translateY(-50%); color:#fff; font-size:10px; pointer-events:none;
}

/* body offset for fixed header */
.sc-page { padding-top: var(--header-h); }

/* ── Swiper / Banner ── */
.sc-banner {
  margin:10px; border-radius: var(--radius); overflow:hidden;
  box-shadow: var(--shadow);
}
.sc-banner img { width:100%; display:block; aspect-ratio:2.2; object-fit:cover; }
.sc-banner .swiper-pagination-bullet-active { background:var(--primary); }

/* ── Nav Icons (快捷入口) ── */
.sc-nav-grid {
  background: var(--white);
  margin:10px; border-radius: var(--radius);
  padding:14px 0 10px;
  display: grid; grid-template-columns: repeat(5,1fr);
  box-shadow: var(--shadow);
}
.sc-nav-grid a {
  display:flex; flex-direction:column; align-items:center; gap:6px;
  font-size:11px; color:var(--text); padding:4px 0;
}
.sc-nav-grid a svg { width:26px; height:26px; fill:var(--primary); }
.sc-nav-grid a .nav-icon {
  width:42px; height:42px; border-radius:50%;
  background:var(--primary-light); display:flex; align-items:center; justify-content:center;
}
.sc-nav-grid a .nav-icon svg { width:22px; height:22px; fill:var(--primary); }

/* ── Announcements ── */
.sc-announce {
  background:var(--white); margin:0 10px 10px; border-radius:var(--radius);
  padding:10px 14px; display:flex; align-items:center; gap:10px;
  box-shadow:var(--shadow); overflow:hidden;
}
.sc-announce-tag {
  flex-shrink:0; background:var(--primary); color:#fff;
  font-size:11px; padding:2px 8px; border-radius:3px;
}
.sc-announce-list { flex:1; overflow:hidden; height:22px; position:relative; }
.sc-announce-list ul { animation:sc-scroll-up 8s linear infinite; }
.sc-announce-list li {
  height:22px; line-height:22px; font-size:13px;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.sc-announce-list li a { color:var(--text); }
@keyframes sc-scroll-up {
  0%   { transform:translateY(0); }
  100% { transform:translateY(-100%); }
}

/* ── Section Title ── */
.sc-section {
  background:var(--white); margin:0 10px 10px;
  border-radius:var(--radius); overflow:hidden;
  box-shadow:var(--shadow);
}
.sc-section-title {
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 14px 8px; font-size:15px; font-weight:600; color:var(--text);
}
.sc-section-title a {
  font-size:12px; color:var(--text-light); font-weight:normal;
}

/* ── Product Grid ── */
.sc-product-grid {
  display:grid; grid-template-columns:repeat(2,1fr);
  gap:8px; padding:0 10px 10px;
}
.sc-section .sc-product-grid { padding:0 8px 10px; }

.sc-product-card {
  background:var(--white); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow);
  transition:transform .2s;
}
.sc-product-card:active { transform:scale(.97); }
.sc-product-card .img-wrap {
  width:100%; aspect-ratio:1; overflow:hidden; background:#f8f8f8;
  position:relative;
}
.sc-product-card .img-wrap img {
  width:100%; height:100%; object-fit:cover;
  transition:transform .3s;
}
.sc-product-card:hover .img-wrap img { transform:scale(1.05); }
.sc-product-card .img-wrap .tag {
  position:absolute; top:6px; left:6px;
  background:var(--primary); color:#fff; font-size:10px;
  padding:2px 6px; border-radius:3px;
}
.sc-product-card .info { padding:8px 10px 10px; }
.sc-product-card .info .title {
  font-size:13px; line-height:1.4;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical;
  overflow:hidden; height:2.8em; color:var(--text);
}
.sc-product-card .info .price-row {
  display:flex; align-items:baseline; gap:6px; margin-top:6px;
}
.sc-product-card .info .price {
  font-size:14px; font-weight:700; color:var(--primary);
}
.sc-product-card .info .old-price {
  font-size:11px; color:var(--text-lighter); text-decoration:line-through;
}
.sc-product-card .info .sales {
  font-size:11px; color:var(--text-light); margin-top:4px;
}

/* ── Product List (horizontal scroll) ── */
.sc-product-scroll {
  display:flex; gap:8px; padding:0 10px 12px;
  overflow-x:auto; scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.sc-product-scroll::-webkit-scrollbar { display:none; }
.sc-product-scroll .sc-product-card {
  min-width:140px; max-width:140px; flex-shrink:0;
  scroll-snap-align:start;
}

/* ── Filter Bar ── */
.sc-filter-bar {
  display:flex; background:var(--white);
  border-bottom:1px solid var(--border); position:sticky; top:var(--header-h); z-index:50;
}
.sc-filter-bar a {
  flex:1; text-align:center; padding:10px 4px;
  font-size:13px; color:var(--text-light); position:relative;
}
.sc-filter-bar a.active { color:var(--primary); font-weight:600; }
.sc-filter-bar a.active::after {
  content:''; position:absolute; bottom:0; left:30%; right:30%;
  height:2px; background:var(--primary); border-radius:1px;
}

/* ── Product Detail ── */
.sc-pd-images { background:var(--white); }
.sc-pd-images img { width:100%; display:block; }
.sc-pd-info {
  background:var(--white); padding:14px; margin-bottom:10px;
}
.sc-pd-info .price-area {
  display:flex; align-items:baseline; gap:10px; margin-bottom:8px;
}
.sc-pd-info .price-area .now {
  font-size:22px; font-weight:700; color:var(--primary);
}
.sc-pd-info .price-area .orig {
  font-size:14px; color:var(--text-lighter); text-decoration:line-through;
}
.sc-pd-info h1 { font-size:16px; line-height:1.5; font-weight:500; }
.sc-pd-info .meta {
  display:flex; gap:16px; margin-top:8px; font-size:12px; color:var(--text-light);
}
.sc-pd-desc {
  background:var(--white); padding:14px; margin-bottom:10px;
}
.sc-pd-desc h3 { font-size:15px; margin-bottom:10px; }
.sc-pd-desc img { max-width:100%; }
.sc-pd-actions {
  position:fixed; bottom:0; left:0; right:0; z-index:100;
  background:var(--white); display:flex; padding:8px 12px;
  gap:10px; box-shadow:0 -2px 10px rgba(0,0,0,.08);
}
.sc-pd-actions .btn-cart,
.sc-pd-actions .btn-buy {
  flex:1; height:42px; border-radius:21px; font-size:15px; font-weight:600;
  display:flex; align-items:center; justify-content:center; color:#fff;
}
.sc-pd-actions .btn-cart { background:var(--accent); }
.sc-pd-actions .btn-buy { background:var(--primary); }
.sc-pd-actions .btn-icon {
  width:42px; display:flex; flex-direction:column; align-items:center;
  justify-content:center; font-size:10px; color:var(--text-light); gap:2px;
}
.sc-pd-actions .btn-icon svg { width:22px; height:22px; fill:var(--text-light); }

/* ── Qty Selector ── */
.sc-qty {
  display:inline-flex; align-items:center; border:1px solid var(--border-dark);
  border-radius:var(--radius-sm); overflow:hidden;
}
.sc-qty button {
  width:32px; height:32px; background:var(--bg);
  font-size:16px; color:var(--text); display:flex; align-items:center; justify-content:center;
}
.sc-qty button:active { background:var(--border); }
.sc-qty input {
  width:40px; height:32px; text-align:center;
  font-size:14px; border-left:1px solid var(--border-dark);
  border-right:1px solid var(--border-dark); background:var(--white);
}

/* ── Cart Page ── */
.sc-cart-item {
  background:var(--white); margin:10px; border-radius:var(--radius);
  padding:12px; display:flex; gap:12px; box-shadow:var(--shadow);
  position:relative;
}
.sc-cart-item .thumb {
  width:90px; height:90px; border-radius:var(--radius-sm);
  overflow:hidden; flex-shrink:0;
}
.sc-cart-item .thumb img { width:100%; height:100%; object-fit:cover; }
.sc-cart-item .detail { flex:1; display:flex; flex-direction:column; justify-content:space-between; }
.sc-cart-item .detail .name {
  font-size:13px; line-height:1.4;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.sc-cart-item .detail .bottom-row {
  display:flex; align-items:center; justify-content:space-between;
}
.sc-cart-item .detail .price { color:var(--primary); font-weight:700; font-size:15px; }
.sc-cart-item .del-btn {
  position:absolute; top:8px; right:8px;
  width:24px; height:24px; display:flex; align-items:center; justify-content:center;
}
.sc-cart-item .del-btn svg { width:16px; height:16px; fill:var(--text-lighter); }
.sc-cart-bar {
  position:fixed; bottom:var(--tabbar-h); left:0; right:0; z-index:90;
  background:var(--white); padding:10px 14px; display:flex;
  align-items:center; justify-content:space-between;
  box-shadow:0 -2px 10px rgba(0,0,0,.06);
}
.sc-cart-bar .total-area { font-size:13px; }
.sc-cart-bar .total-area .amount { font-size:18px; font-weight:700; color:var(--primary); }
.sc-cart-bar .btn-checkout {
  background:var(--primary); color:#fff; padding:10px 28px;
  border-radius:22px; font-size:15px; font-weight:600;
}

/* ── Order ── */
.sc-order-card {
  background:var(--white); margin:10px; border-radius:var(--radius);
  box-shadow:var(--shadow); overflow:hidden;
}
.sc-order-card .order-head {
  display:flex; justify-content:space-between; padding:12px 14px;
  font-size:12px; color:var(--text-light); border-bottom:1px solid var(--border);
}
.sc-order-card .order-head .status { color:var(--primary); font-weight:600; }
.sc-order-card .order-items { padding:10px 14px; }
.sc-order-card .order-item {
  display:flex; gap:10px; padding:6px 0;
}
.sc-order-card .order-item .thumb {
  width:70px; height:70px; border-radius:var(--radius-sm);
  overflow:hidden; flex-shrink:0;
}
.sc-order-card .order-item .thumb img { width:100%; height:100%; object-fit:cover; }
.sc-order-card .order-item .info { flex:1; }
.sc-order-card .order-item .info .name { font-size:13px; line-height:1.4; }
.sc-order-card .order-item .info .meta {
  display:flex; justify-content:space-between; margin-top:6px;
  font-size:12px; color:var(--text-light);
}
.sc-order-card .order-foot {
  display:flex; justify-content:space-between; align-items:center;
  padding:10px 14px; border-top:1px solid var(--border);
}
.sc-order-card .order-foot .total { font-size:14px; }
.sc-order-card .order-foot .total b { color:var(--primary); }
.sc-order-card .order-foot .actions { display:flex; gap:8px; }
.sc-order-card .order-foot .actions a,
.sc-order-card .order-foot .actions button {
  padding:6px 14px; border-radius:16px; font-size:12px;
  border:1px solid var(--border-dark); background:var(--white); color:var(--text);
}
.sc-order-card .order-foot .actions .btn-primary {
  background:var(--primary); color:#fff; border-color:var(--primary);
}

/* ── User Login / Register ── */
.sc-auth-page {
  background:var(--white); min-height:calc(100vh - var(--header-h) - var(--tabbar-h));
  padding:30px 20px 30px;
}
.sc-auth-logo { text-align:center; margin-bottom:30px; }
.sc-auth-logo img { height:50px; }
.sc-auth-logo h2 { margin-top:12px; font-size:20px; }
.sc-form-group {
  margin-bottom:16px; position:relative;
}
.sc-form-group label {
  display:block; font-size:13px; color:var(--text-light); margin-bottom:6px;
}
.sc-form-group .input-wrap {
  display:flex; align-items:center; border:1px solid var(--border-dark);
  border-radius:var(--radius-sm); padding:0 12px; height:46px;
  background:var(--bg); transition:border-color .2s;
}
.sc-form-group .input-wrap:focus-within { border-color:var(--primary); }
.sc-form-group .input-wrap .prefix {
  color:var(--text-light); margin-right:8px; font-size:15px; flex-shrink:0;
}
.sc-form-group .input-wrap input { flex:1; background:none; font-size:15px; }
.sc-form-group .input-wrap input::placeholder { color:var(--text-lighter); }

.sc-btn {
  display:block; width:100%; height:46px; border-radius:23px;
  font-size:16px; font-weight:600; color:#fff; background:var(--primary);
  text-align:center; line-height:46px; margin-top:24px;
  transition:opacity .2s;
}
.sc-btn:active { opacity:.8; }
.sc-btn:hover { cursor:pointer; }
.sc-btn[disabled],.sc-btn.disabled { opacity:.5; pointer-events:none; }
.sc-btn-outline {
  background:var(--white); color:var(--primary); border:1px solid var(--primary);
}
.sc-btn-outline:active { background:var(--primary-light); }
.sc-auth-links {
  display:flex; justify-content:space-between; margin-top:20px;
  font-size:13px;
}
.sc-auth-links a { color:var(--info); }

/* ── User Center ── */
.sc-user-header {
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  padding:20px 20px 24px; color:#fff; text-align:center;
}
.sc-user-header .avatar {
  width:64px; height:64px; border-radius:50%; border:3px solid rgba(255,255,255,.4);
  margin:0 auto 10px; overflow:hidden; background:rgba(255,255,255,.2);
  display:flex; align-items:center; justify-content:center;
}
.sc-user-header .avatar img { width:100%; height:100%; object-fit:cover; }
.sc-user-header .avatar svg { width:36px; height:36px; fill:rgba(255,255,255,.6); }
.sc-user-header .name { font-size:17px; font-weight:600; }
.sc-user-header .phone { font-size:13px; opacity:.8; margin-top:4px; }

.sc-balance-bar {
  background:var(--white); margin:10px; border-radius:var(--radius);
  padding:16px; display:flex; align-items:center; justify-content:space-between;
  box-shadow:var(--shadow);
}
.sc-balance-bar .bal-left .lbl { font-size:12px; color:var(--text-light); }
.sc-balance-bar .bal-left .val { font-size:22px; font-weight:700; color:var(--primary); margin-top:4px; }
.sc-balance-bar .bal-actions { display:flex; gap:10px; }
.sc-balance-bar .bal-actions a {
  padding:8px 18px; border-radius:18px; font-size:13px; font-weight:600;
}
.sc-balance-bar .bal-actions .btn-recharge { background:var(--primary); color:#fff; }
.sc-balance-bar .bal-actions .btn-withdraw { background:var(--bg); color:var(--text); border:1px solid var(--border-dark); }

.sc-order-tabs {
  background:var(--white); margin:10px; border-radius:var(--radius);
  box-shadow:var(--shadow); overflow:hidden;
}
.sc-order-tabs .tab-title {
  padding:14px; font-size:15px; font-weight:600;
  border-bottom:1px solid var(--border);
}
.sc-order-tabs .tabs {
  display:grid; grid-template-columns:repeat(4,1fr);
}
.sc-order-tabs .tabs a {
  display:flex; flex-direction:column; align-items:center;
  padding:14px 4px; gap:6px; font-size:12px; color:var(--text);
}
.sc-order-tabs .tabs a svg { width:24px; height:24px; fill:var(--text-light); }

.sc-menu-list {
  background:var(--white); margin:10px; border-radius:var(--radius);
  box-shadow:var(--shadow); overflow:hidden;
}
.sc-menu-list a {
  display:flex; align-items:center; padding:14px; gap:12px;
  border-bottom:1px solid var(--border); font-size:14px;
}
.sc-menu-list a:last-child { border-bottom:none; }
.sc-menu-list a svg { width:20px; height:20px; fill:var(--text-light); flex-shrink:0; }
.sc-menu-list a span { flex:1; }
.sc-menu-list a::after { content:'›'; color:var(--text-lighter); font-size:18px; }

/* ── Address ── */
.sc-address-card {
  background:var(--white); margin:10px; border-radius:var(--radius);
  padding:14px; box-shadow:var(--shadow); position:relative;
}
.sc-address-card .name-phone { font-size:15px; font-weight:600; margin-bottom:6px; }
.sc-address-card .addr { font-size:13px; color:var(--text-light); line-height:1.5; }
.sc-address-card .tag-default {
  display:inline-block; background:var(--primary-light); color:var(--primary);
  font-size:10px; padding:2px 6px; border-radius:3px; margin-left:8px;
}
.sc-address-card .actions {
  position:absolute; top:14px; right:14px; display:flex; gap:12px;
}
.sc-address-card .actions a { font-size:12px; color:var(--info); }

/* ── Recharge / Withdraw Form ── */
.sc-form-page {
  background:var(--white); min-height:60vh; margin:10px;
  border-radius:var(--radius); padding:20px; box-shadow:var(--shadow);
}
.sc-form-page h3 { font-size:16px; margin-bottom:16px; }
.sc-form-page input[type="file"] {
  display:block; padding:10px 0; font-size:13px; color:var(--text-light);
}
.sc-form-page select,
.sc-checkout-section select {
  width:100%; padding:10px 12px; border:1px solid var(--border-dark);
  border-radius:var(--radius-sm); background:var(--bg); font-size:14px;
  color:var(--text); appearance:auto; -webkit-appearance:auto;
}

/* ── Empty State ── */
.sc-empty {
  text-align:center; padding:60px 20px;
}
.sc-empty svg { width:80px; height:80px; fill:var(--border-dark); margin-bottom:16px; }
.sc-empty p { color:var(--text-light); font-size:14px; margin-bottom:16px; }
.sc-empty a {
  display:inline-block; padding:10px 30px; border-radius:20px;
  background:var(--primary); color:#fff; font-size:14px;
}

/* ── Tabbar (Bottom Nav) ── */
.sc-tabbar {
  position:fixed; bottom:0; left:0; right:0; z-index:200;
  height:var(--tabbar-h);
  background:var(--white);
  display:flex; align-items:center;
  box-shadow:0 -1px 10px rgba(0,0,0,.06);
  border-top:1px solid var(--border);
}
.sc-tabbar a {
  flex:1; display:flex; flex-direction:column; align-items:center;
  justify-content:center; gap:2px;
  font-size:10px; color:var(--text-light);
  position:relative; padding:4px 0;
}
.sc-tabbar a svg { width:22px; height:22px; fill:var(--text-light); }
.sc-tabbar a.active { color:var(--primary); }
.sc-tabbar a.active svg { fill:var(--primary); }
.sc-badge {
  position:absolute; top:2px; right:50%; transform:translateX(16px);
  background:var(--primary); color:#fff; font-size:10px; font-style:normal;
  min-width:16px; height:16px; line-height:16px; text-align:center;
  border-radius:8px; padding:0 4px;
}

/* ── Pagination ── */
.sc-pagination {
  display:flex; justify-content:center; gap:6px;
  padding:16px 10px; flex-wrap:wrap;
}
.sc-pagination a {
  padding:6px 12px; border:1px solid var(--border-dark); border-radius:4px;
  font-size:13px; color:var(--text-light); background:var(--white);
}
.sc-pagination a.active {
  background:var(--primary); color:#fff; border-color:var(--primary);
}

/* ── Toast / Tip ── */
.sc-toast {
  position:fixed; top:50%; left:50%; transform:translate(-50%,-50%);
  background:rgba(0,0,0,.75); color:#fff; padding:12px 24px;
  border-radius:8px; font-size:14px; z-index:9999;
  animation:sc-fadeIn .3s;
  pointer-events:none;
}
@keyframes sc-fadeIn { from{opacity:0;transform:translate(-50%,-50%) scale(.8)} to{opacity:1;transform:translate(-50%,-50%) scale(1)} }

/* ── Loading ── */
.sc-loading {
  text-align:center; padding:30px;
}
.sc-loading::after {
  content:''; display:inline-block; width:24px; height:24px;
  border:3px solid var(--border); border-top-color:var(--primary);
  border-radius:50%; animation:sc-spin .6s linear infinite;
}
@keyframes sc-spin { to{transform:rotate(360deg)} }

/* ── Checkout ── */
.sc-checkout-section {
  background:var(--white); margin:10px; border-radius:var(--radius);
  padding:14px; box-shadow:var(--shadow);
}
.sc-checkout-section h4 {
  font-size:14px; margin-bottom:10px; color:var(--text);
}
.sc-checkout-footer {
  position:fixed; bottom:0; left:0; right:0; z-index:100;
  background:var(--white); padding:10px 14px;
  display:flex; align-items:center; justify-content:space-between;
  box-shadow:0 -2px 10px rgba(0,0,0,.08);
}
.sc-checkout-footer .total { font-size:14px; }
.sc-checkout-footer .total b { font-size:20px; color:var(--primary); }
.sc-checkout-footer .btn-submit {
  background:var(--primary); color:#fff; padding:12px 32px;
  border-radius:22px; font-size:15px; font-weight:600;
}

/* ── Utility ── */
.mt10 { margin-top:10px; }
.mb10 { margin-bottom:10px; }
.text-center { text-align:center; }
.text-primary { color:var(--primary); }
.text-muted { color:var(--text-light); }
.hide { display:none!important; }

/* ── Responsive ── */
@media(min-width:768px) {
  body { max-width:480px; margin:0 auto; box-shadow:0 0 30px rgba(0,0,0,.1); }
  .sc-tabbar,.sc-header,.sc-pd-actions,.sc-cart-bar,.sc-checkout-footer {
    max-width:480px; left:50%; transform:translateX(-50%);
  }
}