/* ===== 铁骑汽配工厂 · 工业深灰 + 警示橙 ===== */
:root {
  --bg: #16181c;
  --bg2: #1d2026;
  --card: #23272e;
  --card2: #2a2f38;
  --line: #363c46;
  --txt: #e8eaed;
  --sub: #9aa3af;
  --acc: #ff7a1a;
  --acc2: #ff9d4d;
  --ok: #2fd15c;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--txt);
  min-height: 100vh;
}

/* ===== 顶栏 ===== */
.top { background: linear-gradient(180deg, #1b1f26, #16181c); border-bottom: 2px solid var(--acc); position: sticky; top: 0; z-index: 99; }
.top-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 24px; padding: 12px 20px; }
.logo { display: flex; align-items: center; gap: 12px; cursor: pointer; }
.logo-mark { width: 42px; height: 42px; background: linear-gradient(135deg, var(--acc), #ff5500); color: #fff; font-weight: 900; font-size: 22px; display: flex; align-items: center; justify-content: center; border-radius: 8px 8px 8px 0; box-shadow: 0 0 14px rgba(255,122,26,.45); }
.logo-txt b { font-size: 18px; letter-spacing: 1px; display: block; }
.logo-txt i { font-style: normal; font-size: 11px; color: var(--sub); letter-spacing: 2px; }
.search { flex: 1; max-width: 460px; display: flex; }
.search input { flex: 1; background: var(--card); border: 1px solid var(--line); color: var(--txt); padding: 9px 14px; border-radius: 6px 0 0 6px; outline: none; font-size: 14px; }
.search input:focus { border-color: var(--acc); }
.search button { background: var(--acc); border: none; color: #fff; padding: 0 20px; border-radius: 0 6px 6px 0; cursor: pointer; font-weight: 700; }
.search button:hover { background: var(--acc2); }
.cart-btn { position: relative; cursor: pointer; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 14px; font-size: 20px; }
.cart-btn:hover { border-color: var(--acc); }
.cart-num { position: absolute; top: -8px; right: -8px; background: var(--acc); color: #fff; font-size: 11px; min-width: 18px; height: 18px; border-radius: 10px; display: flex; align-items: center; justify-content: center; padding: 0 4px; font-weight: 700; }

/* ===== 首页 hero ===== */
.hero { background: linear-gradient(135deg, #101216 0%, #1c2026 55%, #241a12 100%); border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(45deg, rgba(255,122,26,.06) 0 2px, transparent 2px 14px); }
.hero-inner { position: relative; max-width: 1200px; margin: 0 auto; padding: 70px 20px 60px; }
.hero h1 { font-size: 40px; font-weight: 900; letter-spacing: 2px; }
.hero h1::after { content: ""; display: block; width: 70px; height: 5px; background: var(--acc); margin: 18px 0; border-radius: 3px; }
.hero p { color: var(--sub); font-size: 15px; letter-spacing: 1px; margin-bottom: 28px; }
.hero-btn { background: var(--acc); border: none; color: #fff; font-weight: 800; font-size: 16px; padding: 12px 34px; border-radius: 6px; cursor: pointer; box-shadow: 0 6px 18px rgba(255,122,26,.35); }
.hero-btn:hover { background: var(--acc2); }
.hero-strip { background: #0c0e11; color: var(--acc2); font-size: 11px; letter-spacing: 6px; text-align: center; padding: 8px; font-weight: 700; }

/* ===== 区块 ===== */
.page { max-width: 1200px; margin: 0 auto; padding: 24px 20px 80px; }
.sec-title { margin: 34px 0 20px; font-size: 22px; letter-spacing: 1px; }
.sec-title span { border-left: 5px solid var(--acc); padding-left: 12px; }
.bar { display: flex; align-items: center; gap: 8px; margin: 10px 0 20px; font-size: 14px; }
.crumb { color: var(--sub); cursor: pointer; }
.crumb:hover { color: var(--acc); }
.count { margin-left: auto; color: var(--sub); }

/* ===== 分类 ===== */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px 18px; display: flex; align-items: center; gap: 14px; cursor: pointer; transition: .2s; }
.cat:hover { border-color: var(--acc); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,.4); }
.cat-idx { width: 40px; height: 40px; background: var(--card2); color: var(--acc); font-weight: 900; font-size: 18px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-style: italic; }
.cat b { font-size: 15px; letter-spacing: 1px; }

/* ===== 商品网格 ===== */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.p-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; cursor: pointer; transition: .2s; }
.p-card:hover { transform: translateY(-4px); border-color: var(--acc); box-shadow: 0 10px 24px rgba(0,0,0,.45); }
.p-img { position: relative; aspect-ratio: 1/1; background: var(--bg2); overflow: hidden; }
.p-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tag { position: absolute; left: 8px; top: 8px; background: rgba(255,122,26,.92); color: #fff; font-size: 11px; padding: 3px 8px; border-radius: 4px; }
.p-body { padding: 12px; }
.p-title { font-size: 14px; line-height: 1.45; height: 40px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.p-row { display: flex; align-items: baseline; justify-content: space-between; margin: 8px 0; }
.p-price { color: var(--acc2); font-weight: 800; font-size: 17px; }
.p-sales { color: var(--sub); font-size: 11px; }
.add { width: 100%; background: var(--acc); border: none; color: #fff; padding: 8px; border-radius: 6px; cursor: pointer; font-weight: 700; }
.add:hover { background: var(--acc2); }

/* ===== 子分类标签 ===== */
.sub-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tab { background: var(--card); border: 1px solid var(--line); color: var(--sub); padding: 7px 16px; border-radius: 20px; font-size: 13px; cursor: pointer; }
.tab.on { background: var(--acc); border-color: var(--acc); color: #fff; font-weight: 700; }

/* ===== 详情 ===== */
.d-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 12px; }
.d-img { background: var(--card); border: 1px solid var(--line); border-radius: 12px; aspect-ratio: 1/1; overflow: hidden; }
.d-img img { width: 100%; height: 100%; object-fit: cover; }
.d-tag { display: inline-block; background: rgba(255,122,26,.15); color: var(--acc2); border: 1px solid var(--acc); padding: 3px 10px; border-radius: 4px; font-size: 12px; }
.d-title { font-size: 24px; margin: 12px 0; line-height: 1.4; }
.d-price { color: var(--acc2); font-size: 30px; font-weight: 900; }
.d-sales { color: var(--sub); font-size: 13px; margin: 8px 0 20px; }
.d-qty { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; color: var(--sub); font-size: 14px; }
.qty-box { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.qty-box button { width: 34px; height: 34px; background: var(--card2); border: none; color: var(--txt); font-size: 16px; cursor: pointer; }
.qty-box button:hover { background: var(--acc); color: #fff; }
.qty-box b { width: 40px; text-align: center; }
.d-btns { display: flex; gap: 12px; }
.btn-dark { background: var(--card2); border: 1px solid var(--line); color: var(--txt); padding: 12px 28px; border-radius: 6px; cursor: pointer; font-weight: 700; }
.btn-dark:hover { border-color: var(--acc); }
.btn-main { background: var(--acc); border: none; color: #fff; padding: 12px 34px; border-radius: 6px; cursor: pointer; font-weight: 800; font-size: 15px; }
.btn-main:hover { background: var(--acc2); }
.btn-main:disabled { background: #4a4f57; cursor: not-allowed; }

/* ===== 购物车 ===== */
.cart-list { display: flex; flex-direction: column; gap: 12px; }
.c-row { display: flex; align-items: center; gap: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.c-row img { width: 72px; height: 72px; object-fit: cover; border-radius: 8px; }
.c-info { flex: 1; }
.c-title { font-size: 14px; margin-bottom: 6px; }
.c-price { color: var(--acc2); font-weight: 800; }
.c-sub { color: var(--acc2); font-weight: 800; min-width: 70px; text-align: right; }
.c-del { background: transparent; border: 1px solid var(--line); color: var(--sub); padding: 5px 12px; border-radius: 5px; cursor: pointer; }
.c-del:hover { border-color: #e05252; color: #e05252; }
.cart-empty { text-align: center; color: var(--sub); padding: 60px 0; font-size: 15px; }
.cart-foot { display: flex; align-items: center; justify-content: flex-end; gap: 24px; margin-top: 22px; }
.sum { font-size: 15px; }
.sum b { color: var(--acc2); font-size: 22px; }

/* ===== 结算 ===== */
.co-wrap, .co-ok { max-width: 640px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 26px; }
.co-wrap h2 { margin-bottom: 18px; font-size: 19px; border-left: 5px solid var(--acc); padding-left: 12px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--sub); margin-bottom: 6px; }
.field input { width: 100%; background: var(--bg2); border: 1px solid var(--line); color: var(--txt); padding: 11px 14px; border-radius: 6px; outline: none; font-size: 14px; }
.field input:focus { border-color: var(--acc); }
.co-goods { border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); padding: 12px 0; margin: 18px 0; }
.co-row { display: flex; justify-content: space-between; font-size: 13px; padding: 5px 0; color: var(--sub); }
.co-row b { color: var(--txt); }
.co-total { text-align: right; font-size: 15px; margin-bottom: 16px; }
.co-total b { color: var(--acc2); font-size: 24px; }
.pay { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.pay-label { font-size: 13px; color: var(--sub); }
.pay-opt { display: flex; align-items: center; gap: 10px; background: var(--bg2); border: 1px solid var(--line); padding: 10px 16px; border-radius: 8px; }
.pay-check { color: var(--ok); font-weight: 900; }
.co-err { color: #ff6b6b; font-size: 13px; margin-bottom: 12px; min-height: 18px; }
.co-submit { width: 100%; padding: 14px; font-size: 16px; }

/* 支付宝徽标：CSS 绘制蓝色渐变 + 白"支" */
.zfb-badge {
  width: 30px; height: 30px; border-radius: 6px;
  background: linear-gradient(160deg, #1677ff 0%, #0e5fd8 55%, #0a4fb8 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: inset 0 -2px 4px rgba(0,0,0,.25), 0 2px 6px rgba(22,119,255,.35);
  position: relative;
}
.zfb-badge i { font-style: normal; color: #fff; font-size: 17px; font-weight: 900; text-shadow: 0 1px 2px rgba(0,0,0,.3); }

/* 下单成功 */
.co-ok { text-align: center; padding: 50px 30px; }
.ok-ico { width: 64px; height: 64px; border-radius: 50%; background: var(--ok); color: #fff; font-size: 32px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.co-ok h2 { font-size: 22px; margin-bottom: 12px; }
.co-ok p { color: var(--sub); margin-bottom: 8px; }
.co-ok b { color: var(--txt); }
.ok-total b { color: var(--acc2); font-size: 20px; }
.co-ok .btn-main { margin-top: 18px; }

/* toast */
.toast { position: fixed; left: 50%; bottom: 60px; transform: translateX(-50%); background: rgba(20,22,26,.95); border: 1px solid var(--acc); color: #fff; padding: 11px 26px; border-radius: 8px; font-size: 14px; z-index: 999; }

@media (max-width: 900px) {
  .grid, .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .d-wrap { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}