:root {
  --primary: #1f5fbf;
  --primary-dark: #174a96;
  --primary-light: #eef4fc;
  --accent: #e8862e;
  --text: #1f2733;
  --text-soft: #5a6675;
  --border: #e3e8ef;
  --bg: #f5f7fa;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(31, 95, 191, 0.06);
  --shadow-lg: 0 8px 28px rgba(31, 95, 191, 0.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 15px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
.container { width: 1180px; max-width: 94%; margin: 0 auto; }

h1, h2, h3, h4 { color: var(--text); margin: 0 0 12px; font-weight: 700; }
p { margin: 0 0 10px; }

/* ---------- 头部 ---------- */
#site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; color: var(--text); }
.brand-text small { font-size: 12px; color: var(--text-soft); }

.main-nav { display: flex; gap: 26px; margin-left: 8px; }
.main-nav a { color: var(--text-soft); font-weight: 500; padding: 6px 0; position: relative; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); }
.main-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 3px;
  background: var(--primary); border-radius: 2px;
}

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.cart-link {
  position: relative; color: var(--text-soft); font-weight: 500;
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 20px;
}
.cart-link:hover { color: var(--primary); border-color: var(--primary); }
.cart-badge {
  position: absolute; top: -8px; right: -6px; background: var(--accent); color: #fff;
  font-size: 11px; min-width: 18px; height: 18px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center; padding: 0 4px;
}
.btn-link { color: var(--text-soft); font-weight: 500; }
.btn-primary-sm {
  background: var(--primary); color: #fff; padding: 7px 16px; border-radius: 20px; font-weight: 500;
}
.btn-primary-sm:hover { background: var(--primary-dark); color: #fff; }

.user-menu { position: relative; cursor: pointer; }
.user-name {
  display: inline-block; padding: 7px 14px; border: 1px solid var(--border);
  border-radius: 20px; font-weight: 500; color: var(--text);
}
.user-dropdown {
  position: absolute; right: 0; top: 110%; background: #fff; border: 1px solid var(--border);
  border-radius: 8px; box-shadow: var(--shadow-lg); min-width: 140px; display: none; overflow: hidden;
}
.user-menu:hover .user-dropdown, .user-menu:focus .user-dropdown { display: block; }
.user-dropdown a { display: block; padding: 10px 16px; color: var(--text-soft); }
.user-dropdown a:hover { background: var(--primary-light); color: var(--primary); }

.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; font-size: 22px; width: 42px; height: 38px; cursor: pointer; color: var(--text); }

/* ---------- 按钮 ---------- */
.btn, button.btn {
  display: inline-block; padding: 11px 24px; border-radius: 8px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; font-size: 15px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-ghost { background: #fff; color: var(--text-soft); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(180deg, #ffffff 0%, #eef4fc 100%); padding: 58px 0 50px; }
.hero h1 { font-size: 34px; line-height: 1.3; }
.hero p.lead { font-size: 17px; color: var(--text-soft); max-width: 640px; }
.hero-actions { margin-top: 22px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 区块标题 ---------- */
.section { padding: 48px 0; }
.section-head { text-align: center; margin-bottom: 32px; }
.section-head h2 { font-size: 26px; }
.section-head p { color: var(--text-soft); }
.eyebrow { color: var(--primary); font-weight: 600; letter-spacing: 1px; font-size: 13px; text-transform: uppercase; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.module-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow); transition: .2s; display: flex; flex-direction: column;
}
.module-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.module-card .icon {
  width: 54px; height: 54px; border-radius: 12px; background: var(--primary-light);
  color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 26px; font-weight: 700; margin-bottom: 16px;
}
.module-card h3 { font-size: 19px; }
.module-card p { color: var(--text-soft); flex: 1; }
.module-card .more { margin-top: 14px; font-weight: 600; }

.feature { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.feature .icon { width: 46px; height: 46px; border-radius: 10px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.feature h3 { font-size: 17px; }
.feature p { color: var(--text-soft); font-size: 14px; }

/* ---------- 产品卡 ---------- */
.product-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: .2s; display: flex; flex-direction: column; }
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.product-card .thumb { aspect-ratio: 4/3; overflow: hidden; background: #f0f3f7; }
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-card .body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 16px; margin: 0 0 8px; }
.product-card .cat { font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 2px 9px; border-radius: 12px; display: inline-block; margin-bottom: 8px; }
.product-card .price { color: var(--accent); font-weight: 700; font-size: 18px; margin: 6px 0; }
.product-card .price small { color: var(--text-soft); font-weight: 400; text-decoration: line-through; font-size: 12px; margin-left: 6px; }
.product-card .meta { font-size: 12px; color: var(--text-soft); margin-bottom: 12px; }
.product-card .foot { margin-top: auto; display: flex; gap: 8px; }

/* ---------- 过滤条 ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.toolbar input, .toolbar select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; color: var(--text); background: #fff;
}
.toolbar input[type="search"] { flex: 1; min-width: 200px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 7px 14px; border: 1px solid var(--border); border-radius: 20px; font-size: 13px; color: var(--text-soft); cursor: pointer; background: #fff; }
.chip.active, .chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* ---------- 产品详情 ---------- */
.detail-wrap { display: grid; grid-template-columns: 460px 1fr; gap: 36px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.gallery .main-img { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; aspect-ratio: 4/3; }
.gallery .main-img img { width: 100%; height: 100%; object-fit: cover; }
.detail-info h1 { font-size: 24px; }
.detail-info .price { color: var(--accent); font-size: 28px; font-weight: 700; margin: 10px 0; }
.detail-info .price small { color: var(--text-soft); text-decoration: line-through; font-size: 15px; font-weight: 400; margin-left: 10px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tag { font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 3px 10px; border-radius: 12px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.spec-table td { padding: 10px 12px; border: 1px solid var(--border); font-size: 14px; }
.spec-table td:first-child { background: var(--bg); color: var(--text-soft); width: 120px; }
.merchant-box { background: var(--bg); border-radius: 8px; padding: 14px 16px; margin: 14px 0; font-size: 14px; }
.qty-row { display: flex; align-items: center; gap: 12px; margin: 18px 0; }
.qty-row input { width: 70px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; text-align: center; }

.detail-content { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-top: 22px; box-shadow: var(--shadow); }
.detail-content h2 { font-size: 20px; }
.detail-content p { color: var(--text-soft); }

/* ---------- 购物车 ---------- */
.cart-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.cart-table th, .cart-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.cart-table th { background: var(--bg); color: var(--text-soft); font-weight: 600; }
.cart-table img { width: 64px; height: 48px; object-fit: cover; border-radius: 6px; }
.cart-table .p-name { font-weight: 600; }
.cart-table .p-price { color: var(--accent); font-weight: 600; }
.qty-ctrl { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.qty-ctrl button { width: 30px; height: 30px; border: none; background: var(--bg); cursor: pointer; font-size: 16px; }
.qty-ctrl input { width: 44px; border: none; text-align: center; }
.cart-summary { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-top: 22px; box-shadow: var(--shadow); }
.cart-summary .row { display: flex; justify-content: space-between; margin-bottom: 10px; }
.cart-summary .total { font-size: 22px; font-weight: 700; color: var(--accent); }
.empty { text-align: center; padding: 60px 20px; color: var(--text-soft); }

/* ---------- 信息卡 ---------- */
.info-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: .2s; display: flex; flex-direction: column; }
.info-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.info-card .cover { aspect-ratio: 16/9; overflow: hidden; background: #f0f3f7; }
.info-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.info-card .body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.info-card .cat { font-size: 12px; color: #fff; background: var(--primary); padding: 2px 9px; border-radius: 12px; display: inline-block; margin-bottom: 8px; width: fit-content; }
.info-card h3 { font-size: 16px; margin: 0 0 8px; }
.info-card .summary { color: var(--text-soft); font-size: 13px; flex: 1; }
.info-card .pub { font-size: 12px; color: var(--text-soft); margin-top: 10px; border-top: 1px dashed var(--border); padding-top: 10px; }
.info-card .pub .phone { color: var(--primary); font-weight: 600; }
.info-card .time { float: right; }

/* ---------- 信息详情 ---------- */
.info-detail { display: grid; grid-template-columns: 1fr 320px; gap: 28px; }
.info-detail .content-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.info-detail .content-card .cover { width: 100%; border-radius: 8px; margin-bottom: 18px; }
.info-detail h1 { font-size: 24px; }
.info-detail .meta-line { color: var(--text-soft); font-size: 13px; margin-bottom: 16px; }
.info-detail .content-card p { color: var(--text-soft); }
.contact-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); align-self: start; position: sticky; top: 90px; }
.contact-card h3 { font-size: 17px; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.contact-card .field { margin: 12px 0; font-size: 14px; }
.contact-card .field span { color: var(--text-soft); display: inline-block; width: 64px; }
.contact-card .phone-full { font-weight: 700; color: var(--accent); }
.login-tip { background: var(--primary-light); border-radius: 8px; padding: 12px 14px; font-size: 13px; color: var(--primary-dark); margin-top: 12px; }
.login-tip a { font-weight: 600; }

/* ---------- 表单 ---------- */
.form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); max-width: 720px; margin: 0 auto; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 7px; font-size: 14px; }
.form-row label .req { color: var(--accent); margin-left: 3px; }
.form-control { width: 100%; padding: 11px 13px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; color: var(--text); }
.form-control:focus { outline: none; border-color: var(--primary); }
textarea.form-control { min-height: 130px; resize: vertical; }

/* 短信验证码行（输入框 + 获取按钮并排） */
.inline { display: flex; gap: 10px; }
.inline .form-control { flex: 1; }
.sms-btn {
  flex: 0 0 auto; height: 44px; padding: 0 16px; white-space: nowrap;
  border: 1px solid var(--primary); background: #fff; color: var(--primary);
  border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer;
}
.sms-btn:hover:not(:disabled) { background: var(--primary); color: #fff; }
.sms-btn:disabled { border-color: #cbd2db; color: #9aa6b2; background: #f3f5f8; cursor: not-allowed; }

/* 登录方式切换（密码 / 验证码） */
.auth-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.auth-tabs button {
  flex: 1; padding: 10px; border: 1px solid var(--border); background: #fff;
  border-radius: 8px; cursor: pointer; font-size: 14px; color: var(--text-soft); font-weight: 500;
}
.auth-tabs button.active { border-color: var(--primary); color: var(--primary); font-weight: 600; background: var(--primary-light); }
.auth-pane { display: none; }
.auth-pane.active { display: block; }
.form-note { font-size: 12px; color: var(--text-soft); margin-top: 5px; }
.check-row { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; font-size: 14px; }
.check-row input { margin-top: 4px; width: 16px; height: 16px; }
.error-msg { color: #c0392b; font-size: 13px; min-height: 18px; margin: 6px 0; }
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #eafaf1; color: #1e7e45; border: 1px solid #bfe9cd; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #cfe0f7; }

/* ---------- 认证页 ---------- */
.auth-wrap { display: grid; grid-template-columns: 1fr 420px; min-height: 100vh; }
.auth-aside { background: linear-gradient(160deg, #1f5fbf 0%, #174a96 100%); color: #fff; padding: 60px 56px; display: flex; flex-direction: column; justify-content: center; }
.auth-aside h2 { color: #fff; font-size: 30px; }
.auth-aside p { color: #d7e6fb; max-width: 380px; }
.auth-aside ul { list-style: none; padding: 0; margin: 24px 0 0; }
.auth-aside li { padding: 10px 0; border-top: 1px solid rgba(255,255,255,.18); color: #eaf2fc; font-size: 14px; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: 40px 30px; background: #fff; }
.auth-box { width: 100%; max-width: 380px; }
.auth-box h1 { font-size: 24px; }
.auth-box .sub { color: var(--text-soft); margin-bottom: 22px; }
.divider { text-align: center; color: var(--text-soft); margin: 18px 0; position: relative; }
.divider::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: var(--border); }
.divider span { background: #fff; padding: 0 12px; position: relative; }

/* ---------- 关于页 ---------- */
.about-hero { background: var(--primary-light); padding: 44px 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.about-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.about-box h3 { font-size: 18px; }
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { display: flex; justify-content: space-between; padding: 11px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.info-list li span:first-child { color: var(--text-soft); }
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.badge { background: var(--primary-light); color: var(--primary-dark); padding: 6px 12px; border-radius: 16px; font-size: 13px; }

/* ---------- 页面头 ---------- */
.page-head { background: var(--primary-light); padding: 36px 0; border-bottom: 1px solid var(--border); }
.page-head h1 { font-size: 26px; margin: 0; }
.page-head p { color: var(--text-soft); margin: 8px 0 0; }
.breadcrumb { font-size: 13px; color: var(--text-soft); margin-bottom: 6px; }
.breadcrumb a { color: var(--text-soft); }

/* ---------- 页脚 ---------- */
#site-footer { background: #1c2530; color: #c3ccd8; margin-top: 50px; }
.footer-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; padding: 44px 0 30px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col p { font-size: 13px; margin: 0 0 8px; }
.footer-col a { color: #c3ccd8; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #2c3744; padding: 16px 0; font-size: 13px; color: #8b97a6; }
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; }
.footer-bottom a.footer-icp { color: #8b97a6; text-decoration: none; transition: color .15s; }
.footer-bottom a.footer-icp:hover { color: #c3ccd8; text-decoration: underline; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .detail-wrap, .info-detail, .about-grid { grid-template-columns: 1fr; }
  .contact-card { position: static; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-aside { display: none; }
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; gap: 0; padding: 8px 3%; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .header-actions .btn-link, .header-actions .btn-primary-sm { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
  .detail-wrap { padding: 18px; }
}