/* ===================================================================
   广州泰塔商贸有限公司 · 泰塔优选商城
   全局样式
   =================================================================== */
:root {
  --brand: #ff4b2b;
  --brand-dark: #e23a1b;
  --brand-soft: #fff1ed;
  --gold: #ffb020;
  --ink: #14181f;
  --text: #2b313b;
  --muted: #7a8494;
  --line: #eceff4;
  --bg: #f6f7f9;
  --white: #fff;
  --green: #1fbf75;
  --radius: 14px;
  --shadow-sm: 0 2px 10px rgba(20, 24, 31, .05);
  --shadow: 0 10px 30px rgba(20, 24, 31, .08);
  --shadow-lg: 0 24px 60px rgba(20, 24, 31, .14);
  --header-h: 76px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.brand-text { color: var(--brand); }

/* ========================= 顶部工具条 ========================= */
.topbar {
  background: #10151f;
  color: #9aa4b3;
  font-size: 12px;
  letter-spacing: .3px;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 36px; }
.topbar-left { display: flex; align-items: center; gap: 18px; }
.topbar-left span { display: inline-flex; align-items: center; gap: 5px; }
.topbar-right { display: flex; align-items: center; gap: 18px; }
.topbar a { transition: color .2s; }
.topbar a:hover { color: #fff; }
.topbar .hot { color: var(--gold); }

/* ========================= 主头部 ========================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 28px;
  height: var(--header-h);
}
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, #ff6b45, #e23a1b);
  color: #fff; font-size: 21px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px rgba(226, 58, 27, .28);
  letter-spacing: -1px;
}
.logo-text strong {
  display: block; font-size: 18px; color: var(--ink);
  letter-spacing: 1px; line-height: 1.2;
}
.logo-text small {
  display: block; font-size: 10px; color: var(--muted);
  letter-spacing: 2.4px; text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 2px; margin-left: 8px; }
.nav > a, .nav > .nav-item > a {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--text);
  border-radius: 8px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav > a:hover, .nav > .nav-item > a:hover { color: var(--brand); background: var(--brand-soft); }
.nav > a.active, .nav > .nav-item > a.active { color: var(--brand); font-weight: 700; }
.nav > a.active::after, .nav > .nav-item > a.active::after {
  content: ''; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  width: 18px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, #ff6b45, var(--brand));
}
.nav-item { position: relative; }
.nav-drop {
  position: absolute; top: calc(100% + 8px); left: 0;
  min-width: 168px; padding: 8px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .22s ease;
}
.nav-item:hover .nav-drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-drop a {
  display: block; padding: 9px 12px; font-size: 14px;
  color: var(--text); border-radius: 8px; transition: all .2s;
}
.nav-drop a:hover { background: var(--brand-soft); color: var(--brand); }

.header-tools { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.search-box {
  display: flex; align-items: center;
  width: 250px; height: 40px;
  background: #f3f5f8;
  border: 1px solid #e8ebf1;
  border-radius: 999px;
  padding: 0 4px 0 16px;
  transition: all .25s;
}
.search-box:focus-within {
  background: #fff; border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(255, 75, 43, .1);
}
.search-box input {
  flex: 1; border: none; background: transparent; outline: none;
  font-size: 13.5px; color: var(--text); min-width: 0;
}
.search-box input::placeholder { color: #b3bac5; }
.search-box button {
  width: 32px; height: 32px; border: none; border-radius: 50%;
  background: var(--brand); color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.search-box button:hover { background: var(--brand-dark); }

.tool-link {
  display: flex; flex-direction: column; align-items: center;
  gap: 1px; font-size: 11.5px; color: var(--muted);
  padding: 6px 4px; transition: color .2s;
}
.tool-link:hover { color: var(--brand); }
.tool-link .icon { font-size: 19px; line-height: 1; }
.cart-btn {
  position: relative; display: flex; align-items: center; gap: 7px;
  height: 40px; padding: 0 16px; border-radius: 999px;
  background: var(--brand); color: #fff;
  font-size: 13.5px; font-weight: 600;
  box-shadow: 0 6px 16px rgba(255, 75, 43, .26);
  transition: all .25s;
}
.cart-btn:hover { background: var(--brand-dark); transform: translateY(-1px); }
.cart-btn .icon { font-size: 17px; }
.cart-badge {
  position: absolute; top: -6px; right: -4px;
  min-width: 20px; height: 20px; padding: 0 5px;
  background: #fff; color: var(--brand);
  border: 2px solid var(--brand);
  border-radius: 999px; font-size: 11px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.nav-toggle {
  display: none; width: 40px; height: 40px;
  border: 1px solid var(--line); border-radius: 10px;
  background: #fff; font-size: 18px; cursor: pointer; color: var(--ink);
}

/* ========================= 按钮 ========================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  font-size: 14.5px; font-weight: 600; letter-spacing: .3px;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #ff6b45, #e23a1b);
  color: #fff; box-shadow: 0 8px 20px rgba(226, 58, 27, .26);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(226, 58, 27, .34); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: #dfe3ea; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-block { width: 100%; }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; box-shadow: none; }

/* ========================= Hero 轮播 ========================= */
.hero { position: relative; height: 540px; overflow: hidden; background: #14181f; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.06);
  transition: opacity 1s ease, transform 6s linear;
}
.hero-slide.active { opacity: 1; transform: scale(1); }
.hero-overlay {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(90deg, rgba(9, 13, 20, .9) 0%, rgba(9, 13, 20, .68) 42%, rgba(9, 13, 20, .15) 100%);
}
.hero-content {
  position: relative; z-index: 3;
  height: 100%; display: flex; flex-direction: column; justify-content: center;
  max-width: 640px; padding-left: 0;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  width: fit-content; margin-bottom: 22px;
  padding: 7px 16px;
  font-size: 12px; letter-spacing: 2px; color: #ffb59f;
  background: rgba(255, 75, 43, .14);
  border: 1px solid rgba(255, 107, 69, .5);
  border-radius: 999px;
}
.hero-title {
  font-size: 52px; line-height: 1.22; color: #fff;
  font-weight: 800; letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(90deg, #ffb020, #ff6b45);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 15px; line-height: 1.9; color: rgba(255, 255, 255, .8);
  margin-bottom: 34px; max-width: 460px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero-ghost {
  background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45);
}
.btn-hero-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.hero-dots {
  position: absolute; left: 0; bottom: 34px; z-index: 4;
  display: flex; gap: 9px;
}
.hero-dots span {
  width: 30px; height: 4px; border-radius: 3px;
  background: rgba(255, 255, 255, .3); cursor: pointer;
  transition: all .3s;
}
.hero-dots span.active { width: 46px; background: var(--brand); }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 4;
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .3); background: rgba(10, 14, 20, .35);
  color: #fff; font-size: 20px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .25s;
}
.hero-arrow:hover { background: var(--brand); border-color: var(--brand); }
.hero-arrow.prev { left: 22px; }
.hero-arrow.next { right: 22px; }

/* ========================= 服务保障条 ========================= */
.service-strip { background: #fff; border-bottom: 1px solid var(--line); }
.service-strip .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 10px; padding-top: 22px; padding-bottom: 22px;
}
.service-item { display: flex; align-items: center; gap: 13px; padding: 0 10px; }
.service-item + .service-item { border-left: 1px solid var(--line); }
.service-icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; background: var(--brand-soft); color: var(--brand);
}
.service-item strong { display: block; font-size: 14.5px; color: var(--ink); }
.service-item span { font-size: 12px; color: var(--muted); }

/* ========================= 通用区块 ========================= */
.section { padding: 68px 0; }
.section.alt { background: #fff; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 36px; }
.sec-eyebrow {
  display: block; font-size: 11.5px; letter-spacing: 3px;
  color: var(--brand); text-transform: uppercase; margin-bottom: 8px; font-weight: 700;
}
.sec-title { font-size: 30px; color: var(--ink); font-weight: 800; letter-spacing: .5px; line-height: 1.3; }
.sec-sub { font-size: 14px; color: var(--muted); margin-top: 8px; }
.sec-more { font-size: 14px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; transition: color .2s; }
.sec-more:hover { color: var(--brand); }

/* ========================= 分类入口 ========================= */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-card {
  position: relative; height: 210px; border-radius: var(--radius);
  overflow: hidden; background: #ddd;
  box-shadow: var(--shadow-sm);
}
.cat-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cat-card:hover img { transform: scale(1.08); }
.cat-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 20, 0) 30%, rgba(10, 14, 20, .82) 100%);
}
.cat-info { position: absolute; left: 20px; bottom: 18px; z-index: 2; color: #fff; }
.cat-info strong { display: block; font-size: 19px; font-weight: 700; letter-spacing: .5px; }
.cat-info span { font-size: 12px; opacity: .75; letter-spacing: 1px; }
.cat-count {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(255, 255, 255, .18); border: 1px solid rgba(255, 255, 255, .35);
  backdrop-filter: blur(6px);
  font-size: 11px; color: #fff; letter-spacing: .5px;
}

/* ========================= 商品卡片 ========================= */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card {
  background: #fff; border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden; transition: all .3s ease;
  display: flex; flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: #ffd2c7;
  box-shadow: var(--shadow);
}
.pc-thumb { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: #f7f8fa; }
.pc-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .pc-thumb img { transform: scale(1.06); }
.pc-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  padding: 4px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 700; color: #fff; letter-spacing: .5px;
  background: linear-gradient(135deg, #ff6b45, #e23a1b);
  box-shadow: 0 4px 10px rgba(226, 58, 27, .25);
}
.pc-tag.dark { background: linear-gradient(135deg, #3a4454, #14181f); box-shadow: none; }
.pc-body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.pc-name {
  font-size: 15px; font-weight: 700; color: var(--ink); line-height: 1.45;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 44px; margin-bottom: 6px;
}
.pc-sub {
  font-size: 12px; color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 12px;
}
.pc-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; font-size: 11.5px; color: #9aa4b3; }
.pc-stars { color: var(--gold); letter-spacing: 1px; }
.pc-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; margin-top: auto; }
.price { color: var(--brand); font-weight: 800; letter-spacing: -.3px; }
.price .sym { font-size: 13px; margin-right: 1px; }
.price .num { font-size: 22px; }
.price-old { font-size: 12px; color: #b3bac5; text-decoration: line-through; margin-left: 5px; font-weight: 400; }
.pc-add {
  width: 36px; height: 36px; flex-shrink: 0;
  border: 1px solid #ffd2c7; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand);
  font-size: 19px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .25s;
}
.pc-add:hover { background: var(--brand); color: #fff; border-color: var(--brand); transform: rotate(90deg); }

/* ========================= 品牌横幅 / 双栏 ========================= */
.brand-split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.brand-photo { position: relative; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); }
.brand-photo img { width: 100%; height: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.brand-photo .badge {
  position: absolute; left: 22px; bottom: 22px;
  background: rgba(255, 255, 255, .95);
  padding: 14px 20px; border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.brand-photo .badge strong { display: block; font-size: 24px; color: var(--brand); line-height: 1.2; }
.brand-photo .badge span { font-size: 12px; color: var(--muted); }
.brand-text h2 { font-size: 32px; color: var(--ink); line-height: 1.35; margin-bottom: 16px; font-weight: 800; }
.brand-text p { font-size: 14.5px; color: #5b6572; line-height: 2; margin-bottom: 14px; text-align: justify; }
.brand-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 24px 0 30px; }
.brand-point { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; color: var(--text); }
.brand-point i {
  width: 20px; height: 20px; flex-shrink: 0; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-style: normal; font-weight: 700; margin-top: 3px;
}

/* ========================= PAGE HERO（内页） ========================= */
.page-hero {
  position: relative; padding: 54px 0 46px;
  background: linear-gradient(115deg, #10151f 0%, #1d2633 55%, #2a1a17 100%);
  color: #fff; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; right: -120px; top: -140px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 75, 43, .28), transparent 68%);
}
.page-hero h1 { position: relative; font-size: 32px; font-weight: 800; letter-spacing: .5px; margin-bottom: 10px; }
.page-hero p { position: relative; font-size: 14px; color: rgba(255, 255, 255, .62); }
.crumb { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: rgba(255, 255, 255, .55); margin-bottom: 16px; position: relative; }
.crumb a:hover { color: #fff; }
.crumb span.sep { opacity: .5; }
.page-hero.light { background: #fff; color: var(--ink); border-bottom: 1px solid var(--line); padding: 34px 0 30px; }
.page-hero.light::before { display: none; }
.page-hero.light .crumb { color: var(--muted); }
.page-hero.light .crumb a:hover { color: var(--brand); }
.page-hero.light h1 { font-size: 26px; }
.page-hero.light p { color: var(--muted); }

/* ========================= 筛选栏 ========================= */
.filter-bar {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 22px; margin-bottom: 26px;
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 18px; border-radius: 999px;
  background: #f3f5f8; color: #5b6572;
  font-size: 13.5px; cursor: pointer; border: 1px solid transparent;
  transition: all .22s;
}
.chip:hover { color: var(--brand); background: var(--brand-soft); }
.chip.active {
  background: var(--brand); color: #fff; font-weight: 600;
  box-shadow: 0 6px 14px rgba(255, 75, 43, .22);
}
.sort-select {
  height: 38px; padding: 0 34px 0 14px; border-radius: 999px;
  border: 1px solid #dfe3ea; background: #fff url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a8494' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center;
  font-size: 13.5px; color: var(--text); cursor: pointer; outline: none;
  appearance: none; -webkit-appearance: none;
}
.result-line { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; font-size: 13px; color: var(--muted); }
.empty-state {
  padding: 80px 20px; text-align: center; color: var(--muted);
  background: #fff; border: 1px dashed #dfe3ea; border-radius: var(--radius);
}
.empty-state .icon { font-size: 44px; display: block; margin-bottom: 12px; }

/* ========================= 商品详情 ========================= */
.detail-grid { display: grid; grid-template-columns: 500px 1fr; gap: 48px; background: #fff; border-radius: 20px; padding: 32px; border: 1px solid var(--line); }
.gallery-main { position: relative; aspect-ratio: 1 / 1; border-radius: 16px; overflow: hidden; background: #f7f8fa; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 12px; margin-top: 14px; }
.gallery-thumbs button {
  width: 82px; height: 82px; border-radius: 10px; overflow: hidden;
  border: 2px solid transparent; background: #f7f8fa; cursor: pointer; padding: 0;
  transition: border-color .2s;
}
.gallery-thumbs button.active { border-color: var(--brand); }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: cover; }
.detail-info h1 { font-size: 27px; color: var(--ink); line-height: 1.4; font-weight: 800; margin-bottom: 10px; }
.detail-sub { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.detail-rating { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: #9aa4b3; padding-bottom: 20px; border-bottom: 1px dashed var(--line); }
.price-panel {
  margin: 20px 0; padding: 22px 24px; border-radius: 14px;
  background: linear-gradient(120deg, #fff5f2, #fffaf6);
  border: 1px solid #ffe3db;
}
.price-panel .row { display: flex; align-items: baseline; gap: 10px; }
.price-panel .val { font-size: 38px; font-weight: 800; color: var(--brand); letter-spacing: -1px; }
.price-panel .val .sym { font-size: 18px; }
.price-panel .old { font-size: 14px; color: #a4adba; text-decoration: line-through; }
.price-panel .off {
  font-size: 11.5px; color: #fff; background: var(--brand);
  padding: 2px 8px; border-radius: 5px; font-weight: 700;
}
.price-panel .note { font-size: 12.5px; color: var(--muted); margin-top: 8px; }
.opt-row { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.opt-label { width: 64px; flex-shrink: 0; font-size: 13px; color: var(--muted); padding-top: 8px; }
.opt-list { display: flex; flex-wrap: wrap; gap: 8px; }
.opt-btn {
  padding: 8px 18px; border-radius: 8px; border: 1px solid #dfe3ea;
  background: #fff; font-size: 13.5px; color: var(--text); cursor: pointer;
  transition: all .2s;
}
.opt-btn:hover { border-color: var(--brand); color: var(--brand); }
.opt-btn.active { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); font-weight: 600; }
.qty-box { display: flex; align-items: center; border: 1px solid #dfe3ea; border-radius: 8px; overflow: hidden; }
.qty-box button {
  width: 36px; height: 38px; border: none; background: #f7f8fa;
  font-size: 17px; color: var(--text); cursor: pointer; transition: background .2s;
}
.qty-box button:hover { background: #eceff4; }
.qty-box input {
  width: 52px; height: 38px; border: none; text-align: center;
  font-size: 14px; outline: none; color: var(--ink); font-weight: 600;
  background: #fff;
}
.detail-actions { display: flex; gap: 14px; margin-top: 26px; }
.detail-actions .btn { flex: 1; padding: 16px; font-size: 16px; }
.assurance { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 22px; padding-top: 20px; border-top: 1px dashed var(--line); font-size: 12.5px; color: var(--muted); }
.assurance span { display: flex; align-items: center; gap: 6px; }
.assurance i { color: var(--brand); font-style: normal; }

.tabs { margin-top: 30px; background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.tab-nav { display: flex; border-bottom: 1px solid var(--line); background: #fafbfc; }
.tab-nav button {
  padding: 17px 30px; border: none; background: transparent;
  font-size: 15px; color: #5b6572; cursor: pointer; position: relative;
  transition: color .2s;
}
.tab-nav button.active { color: var(--brand); font-weight: 700; background: #fff; }
.tab-nav button.active::after {
  content: ''; position: absolute; left: 30px; right: 30px; bottom: -1px; height: 3px; background: var(--brand); border-radius: 2px;
}
.tab-panel { padding: 32px 36px 40px; display: none; }
.tab-panel.active { display: block; animation: fadeUp .35s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.tab-panel h3 { font-size: 17px; color: var(--ink); margin: 22px 0 10px; }
.tab-panel h3:first-child { margin-top: 0; }
.tab-panel p { font-size: 14px; line-height: 2; color: #5b6572; margin-bottom: 10px; }
.tab-panel img { border-radius: 12px; margin: 18px 0; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.spec-table td { padding: 13px 18px; border: 1px solid var(--line); }
.spec-table tr td:first-child { width: 180px; background: #fafbfc; color: var(--muted); }
.tab-panel ul.plain { padding-left: 2px; }
.tab-panel ul.plain li { font-size: 14px; color: #5b6572; line-height: 2; padding-left: 20px; position: relative; }
.tab-panel ul.plain li::before { content: ''; position: absolute; left: 4px; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); opacity: .6; }

/* ========================= 购物车 ========================= */
.cart-layout { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: start; }
.cart-panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.cart-head, .cart-row {
  display: grid; grid-template-columns: 40px 1fr 120px 130px 120px 50px;
  gap: 12px; align-items: center; padding: 16px 22px;
}
.cart-head { background: #fafbfc; border-bottom: 1px solid var(--line); font-size: 12.5px; color: var(--muted); letter-spacing: .5px; }
.cart-row { border-bottom: 1px solid var(--line); }
.cart-row:last-child { border-bottom: none; }
.cart-row:hover { background: #fffdfb; }
.cart-prod { display: flex; gap: 14px; align-items: center; min-width: 0; }
.cart-prod img { width: 76px; height: 76px; border-radius: 10px; object-fit: cover; background: #f7f8fa; flex-shrink: 0; }
.cart-prod .name { font-size: 14px; font-weight: 700; color: var(--ink); line-height: 1.45; }
.cart-prod .spec { font-size: 12px; color: var(--muted); margin-top: 3px; }
.cart-prod a.name:hover { color: var(--brand); }
.check-box {
  width: 20px; height: 20px; border: 1px solid #dfe3ea; border-radius: 6px;
  background: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center;
  color: var(--brand); font-size: 12px; user-select: none; transition: all .2s;
}
.check-box.on { border-color: var(--brand); background: var(--brand-soft); font-weight: 800; }
.cart-price, .cart-sum { font-size: 14px; color: var(--text); }
.cart-sum { color: var(--brand); font-weight: 800; }
.cart-del { border: none; background: transparent; color: #b3bac5; font-size: 16px; cursor: pointer; transition: color .2s; }
.cart-del:hover { color: var(--brand); }
.cart-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px; background: #fafbfc; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--muted); flex-wrap: wrap; gap: 12px;
}
.cart-toolbar .left { display: flex; align-items: center; gap: 14px; }
.link-btn { border: none; background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; }
.link-btn:hover { color: var(--brand); }
.summary-card {
  position: sticky; top: calc(var(--header-h) + 16px);
  background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 26px 24px;
  box-shadow: var(--shadow-sm);
}
.summary-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 18px; font-weight: 800; }
.sum-row { display: flex; align-items: center; justify-content: space-between; font-size: 13.5px; color: #5b6572; padding: 9px 0; }
.sum-row.total { border-top: 1px dashed var(--line); margin-top: 10px; padding-top: 18px; align-items: flex-end; }
.sum-row.total .label { font-size: 14px; color: var(--ink); font-weight: 600; }
.sum-row.total .val { font-size: 30px; font-weight: 800; color: var(--brand); letter-spacing: -1px; }
.sum-row.total .val .sym { font-size: 16px; }
.summary-card .btn { margin-top: 20px; }
.sum-tip { font-size: 12px; color: #9aa4b3; text-align: center; margin-top: 12px; }

/* ========================= 结算 ========================= */
.checkout-grid { display: grid; grid-template-columns: 1fr 380px; gap: 24px; align-items: start; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 26px 28px; margin-bottom: 20px; }
.panel-title { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 800; color: var(--ink); margin-bottom: 20px; }
.panel-title .no {
  width: 24px; height: 24px; border-radius: 50%; background: var(--brand-soft); color: var(--brand);
  font-size: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 12.5px; color: #5b6572; font-weight: 600; letter-spacing: .3px; }
.field label .req { color: var(--brand); }
.field input, .field select, .field textarea {
  height: 44px; padding: 0 14px; border: 1px solid #e2e6ed; border-radius: 10px;
  background: #fafbfc; font-size: 14px; color: var(--ink); outline: none;
  transition: all .2s;
}
.field textarea { height: auto; min-height: 82px; padding: 12px 14px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--brand); background: #fff; box-shadow: 0 0 0 4px rgba(255, 75, 43, .09);
}
.field .err { font-size: 11.5px; color: var(--brand); display: none; }
.field.invalid input, .field.invalid select { border-color: var(--brand); background: #fff8f6; }
.field.invalid .err { display: block; }
.radio-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.radio-card {
  position: relative; border: 1.5px solid #e2e6ed; border-radius: 12px;
  padding: 16px; cursor: pointer; transition: all .2s; background: #fafbfc;
}
.radio-card:hover { border-color: #ffc3b5; }
.radio-card.active { border-color: var(--brand); background: #fff; box-shadow: 0 6px 18px rgba(255, 75, 43, .1); }
.radio-card strong { display: block; font-size: 14px; color: var(--ink); margin-bottom: 3px; }
.radio-card span { font-size: 11.5px; color: var(--muted); }
.radio-card .tick {
  position: absolute; top: 10px; right: 10px; width: 18px; height: 18px; border-radius: 50%;
  border: 1.5px solid #dfe3ea; background: #fff;
}
.radio-card.active .tick { border-color: var(--brand); background: var(--brand); }
.radio-card.active .tick::after {
  content: '✓'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 11px; font-weight: 700;
}
.radio-card .pay-icon { font-size: 24px; margin-bottom: 6px; display: block; }
.checkout-item { display: flex; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.checkout-item:last-of-type { border-bottom: none; }
.checkout-item img { width: 58px; height: 58px; border-radius: 8px; object-fit: cover; background: #f7f8fa; }
.checkout-item .ci-name { flex: 1; min-width: 0; font-size: 13px; color: var(--ink); font-weight: 600; line-height: 1.4; }
.checkout-item .ci-spec { font-size: 11.5px; color: var(--muted); font-weight: 400; }
.checkout-item .ci-qty { font-size: 12px; color: var(--muted); }
.checkout-item .ci-price { font-size: 13px; font-weight: 700; color: var(--ink); white-space: nowrap; }
.pay-submit-tip { font-size: 11.5px; color: #9aa4b3; text-align: center; margin-top: 10px; line-height: 1.7; }

/* ========================= 收银台 ========================= */
.pay-wrap { max-width: 760px; margin: 0 auto; }
.pay-card { background: #fff; border-radius: 22px; border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.pay-card-head {
  padding: 30px 36px; background: linear-gradient(120deg, #10151f, #232c3a);
  color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.pay-card-head h2 { font-size: 19px; font-weight: 700; }
.pay-card-head .order-no { font-size: 12px; color: rgba(255, 255, 255, .55); margin-top: 4px; letter-spacing: .5px; }
.pay-amount { text-align: right; }
.pay-amount span { font-size: 11.5px; color: rgba(255, 255, 255, .55); display: block; }
.pay-amount strong { font-size: 32px; font-weight: 800; color: #ffb020; letter-spacing: -1px; }
.pay-body { padding: 36px; text-align: center; }
.pay-method-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.pay-method-tabs button {
  padding: 9px 22px; border-radius: 999px; border: 1.5px solid #e2e6ed;
  background: #fff; font-size: 13.5px; color: var(--text); cursor: pointer; transition: all .2s;
}
.pay-method-tabs button.active { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); font-weight: 700; }
.qr-frame {
  width: 216px; height: 216px; margin: 0 auto 16px; padding: 12px;
  border-radius: 16px; background: #fff; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm); display: flex; align-items: center; justify-content: center;
  position: relative;
}
.qr-frame canvas { width: 100%; height: 100%; border-radius: 8px; }
.qr-frame .qr-logo {
  position: absolute; inset: 0; margin: auto;
  width: 42px; height: 42px; border-radius: 9px; background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800; color: var(--brand);
  border: 1px solid var(--line);
}
.pay-hint { font-size: 13.5px; color: #5b6572; margin-bottom: 6px; }
.pay-hint b { color: var(--brand); }
.pay-timer { font-size: 12.5px; color: var(--muted); margin-bottom: 26px; }
.pay-timer strong { color: var(--brand); font-variant-numeric: tabular-nums; }
.pay-steps { display: flex; justify-content: center; gap: 0; margin: 4px 0 28px; flex-wrap: wrap; }
.pay-step { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); }
.pay-step i {
  width: 22px; height: 22px; border-radius: 50%; background: #f3f5f8; color: #9aa4b3;
  display: flex; align-items: center; justify-content: center; font-style: normal; font-size: 11px; font-weight: 700;
}
.pay-step.done i { background: var(--green); color: #fff; }
.pay-step.done { color: var(--green); }
.pay-step-line { width: 40px; height: 1px; background: #e2e6ed; margin: 0 12px; }
.demo-note { font-size: 11.5px; color: #9aa4b3; margin-top: 14px; line-height: 1.7; }

/* ========================= 支付成功 ========================= */
.success-wrap { max-width: 720px; margin: 0 auto; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 54px 40px; box-shadow: var(--shadow); }
.success-icon {
  width: 88px; height: 88px; margin: 0 auto 24px; border-radius: 50%;
  background: linear-gradient(135deg, #2fd689, #12a862);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 40px;
  box-shadow: 0 14px 34px rgba(18, 168, 98, .3);
  animation: popIn .6s cubic-bezier(.2, 1.4, .4, 1);
}
@keyframes popIn { 0% { transform: scale(.3); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.success-wrap h2 { font-size: 27px; color: var(--ink); margin-bottom: 8px; font-weight: 800; }
.success-wrap .lead { font-size: 14px; color: var(--muted); margin-bottom: 30px; }
.order-info {
  text-align: left; background: #fafbfc; border: 1px solid var(--line);
  border-radius: 14px; padding: 22px 26px; margin-bottom: 26px;
}
.order-info .oi-row { display: flex; justify-content: space-between; gap: 16px; font-size: 13px; padding: 7px 0; color: #5b6572; }
.order-info .oi-row b { color: var(--ink); font-weight: 600; }
.order-info .oi-row .amt { color: var(--brand); font-weight: 800; font-size: 15px; }
.success-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ========================= 订单列表 ========================= */
.order-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; margin-bottom: 18px; overflow: hidden; }
.order-card-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 15px 22px; background: #fafbfc; border-bottom: 1px solid var(--line); font-size: 12.5px; color: var(--muted);
}
.order-status { font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px; }
.order-status.paid { color: #12a862; background: #e9f9f1; }
.order-status.unpaid { color: var(--brand); background: var(--brand-soft); }
.order-card-body { padding: 18px 22px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.order-thumbs { display: flex; gap: 10px; flex-wrap: wrap; }
.order-thumbs img { width: 62px; height: 62px; border-radius: 9px; object-fit: cover; background: #f7f8fa; }
.order-card-body .sum { margin-left: auto; text-align: right; font-size: 12.5px; color: var(--muted); }
.order-card-body .sum b { display: block; font-size: 19px; color: var(--brand); font-weight: 800; }
.order-card-foot { padding: 0 22px 18px; display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }
.order-card-foot .btn { padding: 9px 20px; font-size: 13px; }

/* ========================= 关于我们 ========================= */
.about-hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 46px; align-items: center; }
.about-hero-grid img { border-radius: 18px; box-shadow: var(--shadow); width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.about-hero-grid h2 { font-size: 30px; color: var(--ink); font-weight: 800; line-height: 1.4; margin-bottom: 16px; }
.about-hero-grid p { font-size: 14.5px; line-height: 2.05; color: #5b6572; margin-bottom: 12px; text-align: justify; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px 22px; text-align: center; transition: all .3s; }
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #ffd2c7; }
.stat-card .num { font-size: 34px; font-weight: 800; color: var(--brand); letter-spacing: -1px; line-height: 1.2; }
.stat-card .num small { font-size: 16px; }
.stat-card .label { font-size: 12.5px; color: var(--muted); margin-top: 4px; letter-spacing: 1px; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px 26px; transition: all .3s; }
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #ffd2c7; }
.value-card .vi { width: 48px; height: 48px; border-radius: 12px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px; }
.value-card h3 { font-size: 16.5px; color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.value-card p { font-size: 13.5px; color: var(--muted); line-height: 1.9; }
.timeline { position: relative; padding-left: 26px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--brand), #ffd9cf); }
.tl-item { position: relative; padding: 0 0 26px 20px; }
.tl-item::before { content: ''; position: absolute; left: -26px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 3px solid var(--brand); }
.tl-item .year { font-size: 13px; font-weight: 800; color: var(--brand); letter-spacing: 1px; }
.tl-item h4 { font-size: 15.5px; color: var(--ink); margin: 4px 0; font-weight: 700; }
.tl-item p { font-size: 13px; color: var(--muted); line-height: 1.8; }

/* ========================= 联系我们 ========================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 30px 32px; }
.contact-card h3 { font-size: 19px; color: var(--ink); font-weight: 800; margin-bottom: 22px; }
.contact-item { display: flex; gap: 15px; padding: 15px 0; border-bottom: 1px dashed var(--line); }
.contact-item:last-child { border-bottom: none; }
.contact-item .ci { width: 42px; height: 42px; flex-shrink: 0; border-radius: 12px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 18px; }
.contact-item strong { display: block; font-size: 13.5px; color: var(--ink); margin-bottom: 2px; }
.contact-item span, .contact-item a { font-size: 13px; color: var(--muted); line-height: 1.7; }
.contact-item a:hover { color: var(--brand); }
.map-box { position: relative; height: 260px; border-radius: 16px; overflow: hidden; background: linear-gradient(135deg, #eaedf2, #dfe3ea); display: flex; align-items: center; justify-content: center; border: 1px solid var(--line); }
.map-box .pin { text-align: center; color: #5b6572; font-size: 13px; }
.map-box .pin .dot { display: block; font-size: 30px; margin-bottom: 6px; color: var(--brand); }
.map-box::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.55) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.55) 1px, transparent 1px);
  background-size: 46px 46px;
}

/* ========================= 页脚 ========================= */
.site-footer { background: #10151f; color: #8d97a6; padding: 56px 0 0; margin-top: 20px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 38px; padding-bottom: 40px; }
.footer-brand .logo-text strong { color: #fff; }
.footer-brand .logo-text small { color: #6b7686; }
.footer-brand p { font-size: 13px; line-height: 1.95; color: #7d8797; margin: 16px 0 18px; max-width: 300px; }
.footer-social { display: flex; gap: 10px; }
.footer-social span {
  width: 36px; height: 36px; border-radius: 10px; background: rgba(255, 255, 255, .07);
  display: flex; align-items: center; justify-content: center; font-size: 16px;
  cursor: pointer; transition: all .25s;
}
.footer-social span:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
.footer-col h4 { color: #fff; font-size: 14.5px; font-weight: 700; margin-bottom: 16px; letter-spacing: .5px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 13px; color: #7d8797; transition: color .2s; }
.footer-col a:hover { color: var(--brand); }
.footer-col .contact-line { font-size: 13px; color: #7d8797; line-height: 1.8; display: flex; gap: 8px; margin-bottom: 9px; }
.footer-col .contact-line b { color: #c3cad6; font-weight: 600; }
.footer-pay { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.footer-pay span {
  padding: 4px 10px; border-radius: 6px; font-size: 11px;
  background: rgba(255, 255, 255, .06); color: #9aa4b3; border: 1px solid rgba(255, 255, 255, .08);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .07);
  padding: 20px 0 26px; font-size: 12px; color: #626d7d; line-height: 1.9;
  text-align: center;
}
.footer-bottom a:hover { color: var(--brand); }

/* ========================= 返回顶部 & Toast ========================= */
.back-top {
  position: fixed; right: 26px; bottom: 32px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  background: #fff; color: var(--ink); border: 1px solid var(--line);
  box-shadow: var(--shadow); cursor: pointer; font-size: 18px;
  display: none; align-items: center; justify-content: center;
  transition: all .25s;
}
.back-top.show { display: flex; }
.back-top:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
.toast-wrap { position: fixed; top: 96px; left: 50%; transform: translateX(-50%); z-index: 999; display: flex; flex-direction: column; gap: 10px; align-items: center; pointer-events: none; }
.toast {
  display: flex; align-items: center; gap: 9px;
  padding: 12px 22px; border-radius: 999px;
  background: rgba(16, 21, 31, .94); color: #fff; font-size: 13.5px;
  box-shadow: var(--shadow-lg);
  animation: toastIn .3s ease;
}
.toast.success { background: rgba(18, 168, 98, .96); }
.toast.warn { background: rgba(226, 58, 27, .96); }
@keyframes toastIn { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: none; } }

/* ========================= 动效 ========================= */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ========================= 响应式 ========================= */
@media (max-width: 1080px) {
  .header-inner { gap: 16px; }
  .search-box { width: 190px; }
  .nav > a, .nav > .nav-item > a { padding: 10px 10px; font-size: 14px; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .detail-grid { grid-template-columns: 1fr; gap: 30px; }
  .gallery-main { max-width: 520px; margin: 0 auto; }
  .cart-layout, .checkout-grid { grid-template-columns: 1fr; }
  .summary-card { position: static; }
  .brand-split, .about-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .topbar-left span:last-child { display: none; }
  .nav, .tool-link { display: none; }
  .nav-toggle { display: flex; }
  .search-box { flex: 1; width: auto; min-width: 0; }
  .header-inner { gap: 10px; }
  .cart-btn .txt { display: none; }
  .cart-btn { padding: 0 14px; }
  .logo-text strong { font-size: 15.5px; }
  .logo-text small { letter-spacing: 1.5px; }
  .logo-mark { width: 36px; height: 36px; font-size: 18px; }
  .hero { height: 470px; }
  .hero-title { font-size: 34px; }
  .hero-desc { font-size: 13.5px; }
  .service-strip .wrap { grid-template-columns: 1fr 1fr; gap: 16px; }
  .service-item + .service-item { border-left: none; }
  .product-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .section { padding: 46px 0; }
  .sec-title { font-size: 23px; }
  .pc-name { font-size: 13.5px; }
  .price .num { font-size: 19px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .cart-head { display: none; }
  .cart-row { grid-template-columns: 28px 1fr 80px; row-gap: 10px; padding: 16px; }
  .cart-row .cart-price { grid-column: 2; }
  .cart-row .cart-qty { grid-column: 2; }
  .cart-row .cart-sum { grid-column: 3; text-align: right; }
  .cart-row .cart-del { grid-column: 3; grid-row: 1; justify-self: end; }
  .contact-grid { grid-template-columns: 1fr; }
  .order-card-body .sum { margin-left: 0; width: 100%; text-align: left; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 14px; }
  .hero { height: 420px; }
  .hero-title { font-size: 26px; }
  .hero-eyebrow { font-size: 10.5px; letter-spacing: 1.5px; }
  .hero-desc { display: none; }
  .hero-arrow { display: none; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { height: 150px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .pc-body { padding: 12px 12px 14px; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .radio-cards { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .tab-nav button { padding: 14px 16px; font-size: 13.5px; }
  .tab-panel { padding: 22px 18px 28px; }
  .detail-grid { padding: 18px; }
  .detail-info h1 { font-size: 21px; }
  .price-panel .val { font-size: 30px; }
  .detail-actions { flex-direction: column; }
  .pay-body { padding: 26px 18px; }
  .pay-card-head { padding: 22px 20px; }
  .success-wrap { padding: 36px 20px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .back-top { right: 14px; bottom: 18px; }
}

/* 移动端菜单 */
.mobile-menu {
  position: sticky; top: var(--header-h); z-index: 99;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: 8px 18px 18px; box-shadow: var(--shadow);
  display: none;
}
.mobile-menu.show { display: block; animation: fadeUp .25s ease; }
.mobile-menu a {
  display: block; padding: 13px 6px; font-size: 15px; color: var(--text);
  border-bottom: 1px solid #f2f4f7;
}
.mobile-menu a.active { color: var(--brand); font-weight: 700; }
@media (min-width: 821px) { .mobile-menu { display: none !important; } }