/* ===== Shortcuts Store - Main Styles ===== */
:root {
    --bg: #0a0e1a;
    --bg2: #0f1526;
    --card: #141b30;
    --card2: #1a2340;
    --border: #232e4f;
    --text: #e8ecf8;
    --muted: #8b95b5;
    --primary: #0a84ff;
    --primary2: #5e5ce6;
    --accent: #30d158;
    --warn: #ffd60a;
    --danger: #ff453a;
    --grad: linear-gradient(135deg, #0a84ff, #5e5ce6);
    --radius: 14px;
    --shadow: 0 8px 30px rgba(0,0,0,.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-deco {
    position: fixed; inset: 0; z-index: -1;
    background:
        radial-gradient(600px 400px at 85% -5%, rgba(94,92,230,.18), transparent 60%),
        radial-gradient(500px 350px at 10% 10%, rgba(10,132,255,.15), transparent 60%),
        radial-gradient(700px 500px at 50% 110%, rgba(48,209,88,.06), transparent 60%),
        var(--bg);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(10,14,26,.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 800; font-size: 20px; }
.logo-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--grad); font-size: 18px;
    box-shadow: 0 4px 12px rgba(10,132,255,.4);
}
.main-nav { display: flex; gap: 28px; }
.main-nav a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; transition: color .2s; }
.main-nav a:hover, .main-nav a.active { color: var(--text); }
.cart-btn {
    background: var(--card2); border: 1px solid var(--border); color: var(--text);
    border-radius: 10px; padding: 8px 14px; cursor: pointer; font-size: 16px; position: relative;
    transition: all .2s;
}
.nav-toggle { display: none; }
.cart-btn:hover { border-color: var(--primary); }
/* 语言切换器 */
.lang-switch { position: relative; }
.lang-btn {
    background: var(--card2); border: 1px solid var(--border); color: var(--text);
    border-radius: 10px; padding: 8px 12px; cursor: pointer; font-size: 14px;
    display: flex; align-items: center; gap: 6px; transition: all .2s;
}
.lang-btn:hover { border-color: var(--primary); }
.lang-menu {
    display: none; position: absolute; top: calc(100% + 8px); right: 0; z-index: 200;
    background: var(--card2); border: 1px solid var(--border); border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0,0,0,.5); padding: 6px; min-width: 180px;
    max-height: 360px; overflow-y: auto;
}
.lang-menu.open { display: block; }
.lang-menu a {
    display: flex; align-items: center; gap: 8px; color: var(--text);
    text-decoration: none; font-size: 14px; padding: 8px 10px; border-radius: 8px;
}
.lang-menu a:hover { background: var(--bg2); }
.lang-menu a.active { color: var(--primary); font-weight: 600; }
@media (max-width: 900px) {
    .lang-switch { order: 2; }
}
.cart-count {
    position: absolute; top: -6px; right: -6px; background: var(--danger); color: #fff;
    font-size: 11px; font-weight: 700; min-width: 18px; height: 18px; border-radius: 9px;
    display: flex; align-items: center; justify-content: center; padding: 0 4px;
}

/* Announcement */
.announcement {
    background: var(--grad); color: #fff; text-align: center;
    padding: 10px 20px; font-size: 14px; font-weight: 600;
}

/* Hero */
.hero { padding: 70px 0 60px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.hero-badge {
    display: inline-block; background: rgba(10,132,255,.12); color: #64b5ff;
    border: 1px solid rgba(10,132,255,.3); border-radius: 20px;
    padding: 6px 16px; font-size: 13px; font-weight: 600; margin-bottom: 18px;
}
.hero h1 { font-size: 52px; line-height: 1.15; margin-bottom: 18px; font-weight: 800; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { color: var(--muted); font-size: 18px; max-width: 520px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; margin-bottom: 40px; flex-wrap: wrap; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border: none; cursor: pointer; text-decoration: none; font-weight: 600;
    border-radius: 12px; transition: all .2s; font-size: 15px;
    padding: 10px 20px; font-family: inherit;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 4px 16px rgba(10,132,255,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(10,132,255,.5); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }
.btn-green { background: linear-gradient(135deg, #30d158, #28a745); color: #fff; box-shadow: 0 4px 16px rgba(48,209,88,.3); }
.btn-green:hover { transform: translateY(-2px); }
.btn-outline-green { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-outline-green:hover { background: rgba(48,209,88,.1); }

.hero-stats { display: flex; gap: 34px; }
.stat b { display: block; font-size: 26px; color: var(--text); }
.stat span { color: var(--muted); font-size: 13px; }

.hero-art { position: relative; display: flex; justify-content: center; }
.phone-frame {
    width: 280px; height: 560px; background: #0d1220;
    border: 3px solid #2a3556; border-radius: 44px; padding: 14px;
    box-shadow: 0 30px 80px rgba(0,0,0,.6), inset 0 0 0 2px #000;
    position: relative;
}
.phone-notch { position: absolute; top: 24px; left: 50%; transform: translateX(-50%); width: 120px; height: 26px; background: #000; border-radius: 16px; z-index: 2; }
.phone-screen {
    width: 100%; height: 100%; background: linear-gradient(180deg, #101830, #0a0e1a);
    border-radius: 32px; padding: 52px 14px 20px; display: flex; flex-direction: column; gap: 12px;
}
.ph-widget {
    background: var(--card2); border: 1px solid var(--border); border-radius: 12px;
    padding: 12px 14px; font-size: 13px; font-weight: 600;
    animation: floaty 4s ease-in-out infinite;
}
.ph-w1 { animation-delay: 0s } .ph-w2 { animation-delay: .4s } .ph-w3 { animation-delay: .8s }
.ph-w4 { animation-delay: 1.2s } .ph-w5 { animation-delay: 1.6s } .ph-w6 { animation-delay: 2s }
@keyframes floaty { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-6px) } }
.float-badge {
    position: absolute; background: var(--card); border: 1px solid var(--border);
    padding: 10px 16px; border-radius: 12px; font-size: 13px; font-weight: 600;
    box-shadow: var(--shadow); animation: floaty 5s ease-in-out infinite;
}
.fb1 { top: 80px; right: -20px; }
.fb2 { bottom: 100px; left: -30px; animation-delay: 1s; }

/* Sections */
section { padding: 70px 0; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head h2 { font-size: 36px; margin-bottom: 10px; }
.section-head p { color: var(--muted); font-size: 16px; }

/* Category filter */
.cat-filter { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.cat-pill {
    background: var(--card); border: 1px solid var(--border); color: var(--muted);
    padding: 8px 18px; border-radius: 20px; cursor: pointer; font-size: 14px; font-weight: 500; transition: all .2s;
}
.cat-pill:hover { color: var(--text); border-color: var(--primary); }
.cat-pill.active { background: var(--grad); color: #fff; border-color: transparent; }

/* Product grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.product-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; transition: all .25s;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(10,132,255,.5); }
.card-img-wrap { position: relative; display: block; aspect-ratio: 16/10; overflow: hidden; background: var(--card2); }
.card-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-card:hover .card-img-wrap img { transform: scale(1.06); }
.card-img-ph {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    font-size: 56px; background: var(--grad); color: #fff;
}
.card-img-ph.big { font-size: 90px; min-height: 220px; }
.badge-featured, .badge-sale {
    position: absolute; top: 12px; padding: 4px 12px; border-radius: 14px;
    font-size: 12px; font-weight: 700; color: #fff;
}
.badge-featured { left: 12px; background: rgba(255,214,10,.9); color: #000; }
.badge-sale { right: 12px; background: var(--danger); }
.card-body { padding: 16px 18px 18px; }
.card-cat {
    display: inline-block; font-size: 11px; text-transform: uppercase; letter-spacing: .6px;
    color: #64b5ff; background: rgba(10,132,255,.1); padding: 3px 10px; border-radius: 10px; margin-bottom: 8px;
}
.card-title { font-size: 17px; margin-bottom: 6px; }
.card-title a { color: var(--text); text-decoration: none; }
.card-title a:hover { color: var(--primary); }
.card-desc { color: var(--muted); font-size: 13px; margin-bottom: 14px; min-height: 40px; }
.card-foot { display: flex; align-items: center; justify-content: space-between; }
.price { display: flex; align-items: baseline; gap: 8px; }
.old-price { color: var(--muted); text-decoration: line-through; font-size: 13px; }
.now-price { color: var(--text); font-weight: 800; font-size: 18px; }

.empty-state { grid-column: 1/-1; text-align: center; padding: 60px 0; color: var(--muted); }
.empty-emoji { font-size: 56px; margin-bottom: 16px; }

/* How it works */
.how { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.step { text-align: center; position: relative; padding: 30px 20px; }
.step-num {
    position: absolute; top: 0; left: 50%; transform: translateX(-50%);
    width: 36px; height: 36px; border-radius: 50%; background: var(--grad); color: #fff;
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px;
}
.step-icon { font-size: 44px; margin: 16px 0 12px; }
.step h3 { margin-bottom: 8px; font-size: 19px; }
.step p { color: var(--muted); font-size: 14px; }

/* Why us */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.why-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; transition: all .2s;
}
.why-item:hover { border-color: var(--primary); transform: translateY(-3px); }
.why-item span { font-size: 30px; }
.why-item h3 { margin: 10px 0 6px; font-size: 17px; }
.why-item p { color: var(--muted); font-size: 14px; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    margin-bottom: 12px; overflow: hidden;
}
.faq-item summary {
    padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 16px;
    list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 22px; color: var(--primary); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 22px 18px; color: var(--muted); font-size: 14px; }

/* Contact */
.contact-box { text-align: center; }
.contact-email {
    display: inline-block; background: var(--card); border: 1px solid var(--border);
    padding: 18px 36px; border-radius: 14px; font-size: 20px; color: var(--text); text-decoration: none;
    transition: all .2s;
}
.contact-email:hover { border-color: var(--primary); color: var(--primary); }

/* Footer */
.site-footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 30px; }
.footer-grid h4 { margin-bottom: 14px; font-size: 15px; }
.footer-grid a { display: block; color: var(--muted); text-decoration: none; font-size: 14px; margin-bottom: 8px; }
.footer-grid a:hover { color: var(--primary); }
.footer-grid p { color: var(--muted); font-size: 14px; }
.pay-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.pay-badges span {
    background: var(--card); border: 1px solid var(--border); border-radius: 6px;
    font-size: 11px; font-weight: 700; padding: 4px 8px; color: var(--muted);
}
.footer-bottom { text-align: center; color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); padding-top: 20px; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.7);
    backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; animation: fadeIn .2s; }
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }
.modal {
    background: var(--card); border: 1px solid var(--border); border-radius: 18px;
    max-width: 720px; width: 100%; max-height: 90vh; overflow-y: auto;
    padding: 28px; position: relative; box-shadow: var(--shadow); animation: slideUp .25s;
}
.modal-sm { max-width: 460px; }
.modal-lg { max-width: 860px; }
@keyframes slideUp { from { transform: translateY(24px); opacity: 0 } to { transform: none; opacity: 1 } }
.modal-close {
    position: absolute; top: 14px; right: 14px; background: var(--card2); border: 1px solid var(--border);
    color: var(--muted); width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 15px; z-index: 5;
}
.modal-close:hover { color: var(--text); border-color: var(--danger); }
.modal-title { margin-bottom: 20px; font-size: 22px; }

/* Detail layout */
.detail-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.detail-img img { width: 100%; border-radius: 14px; }
.detail-thumbs { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.detail-thumbs img { width: 64px; height: 64px; object-fit: cover; border-radius: 10px; border: 2px solid var(--border); cursor: pointer; opacity: .7; transition: all .2s; }
.detail-thumbs img.active, .detail-thumbs img:hover { opacity: 1; border-color: var(--primary); }
.detail-info h2 { font-size: 26px; margin-bottom: 10px; }
.detail-price { margin-bottom: 14px; }
.detail-desc { color: var(--muted); font-size: 15px; margin-bottom: 16px; white-space: pre-line; }
.detail-feats { list-style: none; margin-bottom: 22px; }
.detail-feats li { padding: 6px 0; color: var(--text); font-size: 14px; }

/* Cart */
.cart-items { max-height: 50vh; overflow-y: auto; margin-bottom: 16px; }
.cart-item {
    display: flex; align-items: center; gap: 12px; padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.cart-item img { width: 56px; height: 42px; object-fit: cover; border-radius: 8px; }
.cart-item .ci-info { flex: 1; }
.cart-item .ci-title { font-size: 14px; font-weight: 600; }
.cart-item .ci-price { font-size: 13px; color: var(--muted); }
.cart-item .ci-remove { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 16px; }
.cart-total { display: flex; justify-content: space-between; padding: 14px 0; border-top: 1px solid var(--border); font-size: 18px; font-weight: 700; }

/* Checkout */
.checkout-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; }
.form-group { margin-bottom: 16px; }
.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%; background: var(--bg2); border: 1px solid var(--border); color: var(--text);
    padding: 12px 14px; border-radius: 10px; font-size: 15px; font-family: inherit; transition: border .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary);
}
.form-group small { color: var(--muted); font-size: 12px; }

/* Coupon */
.coupon-row { display: flex; gap: 8px; }
.coupon-row input { flex: 1; }
.coupon-row .btn { white-space: nowrap; }
#ckCouponMsg { display: block; margin-top: 6px; font-size: 12px; font-weight: 600; }
.pay-methods { display: flex; flex-direction: column; gap: 8px; }
.pay-method {
    display: flex; align-items: center; gap: 12px; padding: 12px 14px;
    background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; transition: all .2s;
}
.pay-method:hover { border-color: var(--primary); }
.pay-method.selected { border-color: var(--primary); background: rgba(10,132,255,.08); }
.pay-method input[type=radio] { accent-color: var(--primary); }
.pay-method .pm-icon { font-size: 20px; }
.pay-method .pm-name { font-weight: 600; font-size: 14px; flex: 1; }
.pay-method .pm-desc { font-size: 12px; color: var(--muted); }
.checkout-summary {
    background: var(--bg2); border: 1px solid var(--border); border-radius: 14px; padding: 22px; height: fit-content;
}
.checkout-summary h3 { margin-bottom: 14px; }
.ck-item { display: flex; justify-content: space-between; font-size: 14px; padding: 6px 0; color: var(--muted); }
.sum-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 14px; }
.sum-row.total { border-top: 1px solid var(--border); font-size: 18px; font-weight: 700; margin-top: 8px; padding-top: 14px; }
.green { color: var(--accent); }
.secure-note { text-align: center; color: var(--muted); font-size: 12px; margin-top: 12px; }

/* Success modal */
.success-modal { text-align: center; }
.success-icon { font-size: 64px; margin-bottom: 12px; }
.success-modal h2 { margin-bottom: 10px; }
.success-modal p { color: var(--muted); margin-bottom: 20px; }
.success-modal .btn { margin-bottom: 10px; }

/* Toast */
.toast {
    position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(80px);
    background: var(--card2); border: 1px solid var(--border); color: var(--text);
    padding: 12px 24px; border-radius: 12px; font-size: 14px; font-weight: 500;
    box-shadow: var(--shadow); opacity: 0; transition: all .3s; z-index: 300; pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero p { margin: 0 auto 28px; }
    .hero-cta, .hero-stats { justify-content: center; }
    .hero-art { margin-top: 40px; }
    .phone-frame { width: 240px; height: 480px; }
    .steps, .why-grid { grid-template-columns: 1fr; }
    .detail-layout, .checkout-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .main-nav { display: none; }
    .hero h1 { font-size: 38px; }
}

/* ===================== 响应式增强（三端适配） ===================== */

/* ---------- Pad 横屏 / 小平板 (≤1024px) ---------- */
@media (max-width: 1024px) {
    .container { max-width: 96%; padding: 0 14px; }
    .hero-inner { gap: 30px; }
    .hero h1 { font-size: 40px; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 18px; }
    .detail-layout { gap: 24px; }
    .footer-grid { gap: 24px; }
}

/* ---------- 平板竖屏 / 大手机 (≤900px) ---------- */
@media (max-width: 900px) {
    /* 导航：压缩间距，语言菜单右对齐 */
    .main-nav { gap: 18px; }
    .main-nav a { font-size: 14px; }
    /* 商品网格 2 列 */
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    /* 弹窗宽度自适应 */
    .modal { max-width: 92vw; }
    .modal-lg { max-width: 92vw; }
    .modal-sm { max-width: 92vw; }
    /* 分类筛选可横向滚动 */
    .cat-filter { justify-content: flex-start; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 6px; flex-wrap: nowrap; }
    .cat-pill { flex-shrink: 0; }
    /* 支付方式网格 */
    .pay-methods { grid-template-columns: repeat(2, 1fr); }
    /* 结账表单 */
    .checkout-layout { grid-template-columns: 1fr; }
    .checkout-summary { order: -1; }
    /* 表格横向滚动 */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 640px; }
    /* 页脚 */
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    /* 语言切换器右移防遮挡 */
    .lang-switch { position: relative; }
}

/* ---------- 手机 (≤640px) ---------- */
@media (max-width: 640px) {
    /* 导航：汉堡菜单 */
    .header-inner { flex-wrap: wrap; height: auto; padding: 10px 0; position: relative; }
    .logo { font-size: 17px; }
    .main-nav {
        order: 3; width: 100%; display: none; flex-direction: column;
        background: var(--card); border: 1px solid var(--border); border-radius: 12px;
        padding: 10px 14px; margin-top: 10px; gap: 4px;
    }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 10px 6px; font-size: 15px; border-bottom: 1px solid var(--border); }
    .main-nav a:last-child { border-bottom: none; }
    /* 汉堡按钮 */
    .nav-toggle {
        display: inline-flex; align-items: center; justify-content: center;
        width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border);
        background: var(--card2); color: var(--text); font-size: 18px; cursor: pointer;
        margin-left: auto;
    }
    /* 语言按钮文字收窄 */
    .lang-btn span { display: none; }
    .lang-btn { padding: 6px 10px; }
    /* Hero 单列 */
    .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 24px; }
    .hero-text { order: 1; }
    .hero-art { order: 2; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 15px; }
    .hero-cta, .hero-stats { justify-content: center; }
    .hero-stats { flex-wrap: wrap; }
    /* 商品网格 1 列 */
    .product-grid { grid-template-columns: 1fr; }
    .card-img-wrap img { width: 100%; object-fit: cover; }
    /* Steps/Why 单列 */
    .steps, .why-grid { grid-template-columns: 1fr; }
    /* 详情/结账单列 */
    .detail-layout { grid-template-columns: 1fr; }
    .detail-img img { width: 100%; }
    /* 弹窗全屏 */
    .modal-overlay { padding: 0; align-items: flex-end; }
    .modal { max-width: 100vw; width: 100%; max-height: 92vh; border-radius: 16px 16px 0 0; overflow-y: auto; }
    .modal-sm, .modal-lg { max-width: 100vw; }
    /* 支付方式单列 */
    .pay-methods { grid-template-columns: 1fr; }
    /* 页脚单列 */
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .pay-badges { flex-wrap: wrap; justify-content: center; }
    /* 表单 */
    .form-grid-2 { grid-template-columns: 1fr; }
    /* 购物车 */
    .cart-item { flex-wrap: wrap; gap: 8px; }
    .cart-total { flex-direction: column; align-items: stretch; gap: 10px; }
    /* FAQ */
    .faq-item { padding: 14px; }
    .section-head h2 { font-size: 24px; }
    /* Toast 宽度 */
    .toast { left: 16px; right: 16px; width: auto; }
}

/* ---------- 超小屏 (≤380px) ---------- */
@media (max-width: 380px) {
    .hero h1 { font-size: 25px; }
    .logo-text { font-size: 15px; }
    .btn-lg { padding: 12px 18px; font-size: 14px; }
}

/* 付款/成功弹窗置于所有弹窗之上（防止被动态创建的 productModal 盖住） */
#checkoutModal, #successModal {
    z-index: 300;
}
#successModal {
    z-index: 350;
}