* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #ffffff;
  color: #1f2328;
  font-family: system-ui, -apple-system, "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: #1a5fb4; text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.4; color: #1f2328; }
h1 { font-size: 30px; letter-spacing: .5px; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 22px; }
li { margin-bottom: 4px; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* 全站统一头部（深蓝科技导航） */
.site-header { position: sticky; top: 0; z-index: 50; background: #0c1b30; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.header-inner { display: flex; align-items: center; gap: 28px; min-height: 66px; }
.brand { display: flex; flex-direction: column; justify-content: center; flex: none; color: #ffffff; line-height: 1.3; }
.brand strong { font-size: 18px; font-weight: 650; letter-spacing: .5px; color: #ffffff; }
.brand span { font-size: 12px; color: #8fa5c2; }
.brand:hover { text-decoration: none; }
.main-nav { display: flex; gap: 20px; flex: 1; align-items: center; white-space: nowrap; }
.main-nav a { color: #d0deee; font-size: 14px; padding: 6px 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.main-nav a:hover { color: #ffffff; text-decoration: none; }
.main-nav a.on { color: #ffffff; font-weight: 600; border-bottom-color: #3b82f6; }
.nav-actions { display: flex; gap: 14px; align-items: center; flex: none; font-size: 14px; color: #d0deee; }
.nav-actions a { color: #d0deee; }
.nav-actions a:hover { color: #ffffff; text-decoration: none; }
.nav-actions .sep { color: rgba(255, 255, 255, .25); }
.nav-actions a.nav-publish { display: inline-block; background: #3b82f6; border: 1px solid #3b82f6; color: #ffffff; padding: 6px 14px; font-size: 14px; line-height: 1.4; font-weight: 500; }
.nav-actions a.nav-publish:hover { background: #2563eb; border-color: #2563eb; color: #ffffff; text-decoration: none; }

body[data-page="home"] .site-header { position: absolute; width: 100%; background: rgba(10, 26, 48, .75); border-bottom: 1px solid rgba(255, 255, 255, .1); }

/* 全站内页通用通栏横幅 Banner */
.sub-banner { position: relative; background: #0c1b30 url("img/sub-banner.jpg") center center / cover no-repeat; padding: 42px 0 36px; border-bottom: 1px solid #e5e7eb; }
.sub-banner::before { content: ""; position: absolute; inset: 0; background: rgba(10, 26, 48, .45); }
.sub-banner .wrap { position: relative; z-index: 1; }
.sub-banner .page-head { border-bottom: 0; padding: 0; margin-bottom: 12px; }
.sub-banner .page-head h1 { color: #ffffff; font-size: 28px; margin-bottom: 8px; letter-spacing: .5px; }
.sub-banner .page-head .lead { color: #d6e4f5; font-size: 14px; max-width: 820px; line-height: 1.7; margin-bottom: 0; }
.sub-banner .page-head .meta { border-bottom: 0; padding: 0; margin: 6px 0 0; color: #abc4e2; font-size: 13px; }
.sub-banner .page-head .meta span { margin-right: 18px; }
.sub-banner .breadcrumb { padding: 0; font-size: 13px; color: #9bb7d8; margin-top: 10px; }
.sub-banner .breadcrumb a { color: #d6e4f5; }
.sub-banner .breadcrumb a:hover { color: #ffffff; text-decoration: underline; }

.content-area { padding-top: 36px; padding-bottom: 50px; }

/* 优化后全站深色高档页脚（呼应参考站与顶栏） */
.site-footer { background: #0c1b30; border-top: 1px solid rgba(255, 255, 255, .08); color: #c0d3e8; padding: 44px 0 24px; margin-top: 40px; }
.site-footer .company { font-size: 16px; font-weight: 600; margin-bottom: 12px; color: #ffffff; letter-spacing: .5px; }
.site-footer p { font-size: 13px; color: #9bb5d1; margin-bottom: 8px; line-height: 1.6; }
.site-footer a { color: #c0d3e8; }
.site-footer a:hover { color: #ffffff; text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr); gap: 48px; }
.footer-col-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; color: #ffffff; border-left: 3px solid #3b82f6; padding-left: 8px; line-height: 1.2; }
.footer-links { display: flex; flex-direction: column; gap: 8px; font-size: 13px; margin-bottom: 0; }
.footer-links a { color: #9bb5d1; }
.footer-links a:hover { color: #ffffff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 32px; padding-top: 18px; font-size: 13px; color: #7f9bb9; text-align: center; }

/* 通用区块 */
main { min-height: 420px; }
.section { padding: 44px 0; border-bottom: 1px solid #eef0f3; scroll-margin-top: 80px; }
.section.soft { background: #f6f7f9; }
.section:last-child { border-bottom: 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.section-head h2 { font-size: 21px; }
.section-head .head-side { color: #5b6470; font-size: 13px; white-space: nowrap; }
.lead { color: #5b6470; font-size: 15px; max-width: 760px; }
.muted { color: #5b6470; }
.small { font-size: 13px; }
.strong { font-weight: 600; }
.mt-0 { margin-top: 0; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }

/* 首屏 */
.hero { padding: 56px 0 48px; border-bottom: 1px solid #e5e7eb; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.hero h1 { font-size: 34px; margin-bottom: 16px; }
.hero .lead { font-size: 16px; margin-bottom: 26px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-panel { border: 1px solid #e5e7eb; border-radius: 8px; padding: 22px 24px; background: #ffffff; }
.hero-panel h3 { margin-bottom: 14px; }
.hero-panel ol { padding-left: 20px; margin-bottom: 18px; }
.hero-panel li { margin-bottom: 8px; color: #3a424d; font-size: 14px; }

/* 数字与卡片 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #e5e7eb; border: 1px solid #e5e7eb; border-radius: 8px; overflow: hidden; }
.stat { background: #ffffff; padding: 20px 18px; }
.stat .num { font-size: 24px; font-weight: 650; color: #1a5fb4; line-height: 1.3; }
.stat .label { font-size: 13px; color: #5b6470; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { border: 1px solid #e5e7eb; border-radius: 8px; padding: 22px 24px; background: #ffffff; }
.card h3 { margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }
.card ul { margin-bottom: 0; }

/* 表格 */
.table-wrap { width: 100%; overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; background: #ffffff; }
table.data th, table.data td { border: 1px solid #e5e7eb; padding: 11px 14px; text-align: left; vertical-align: top; }
table.data th { background: #f6f7f9; font-weight: 600; color: #3a424d; white-space: nowrap; }
table.data tbody td:first-child { white-space: nowrap; }
table.data td.num, table.data th.num { text-align: right; white-space: nowrap; }
table.data tr:hover td { background: #fafbfc; }
table.data caption { caption-side: bottom; text-align: left; color: #5b6470; font-size: 13px; padding-top: 10px; }
table.kv th { width: 170px; }

/* 按钮 */
.btn { display: inline-block; border: 1px solid #1a5fb4; background: #1a5fb4; color: #ffffff; padding: 9px 20px; border-radius: 6px; font-size: 14px; font-family: inherit; cursor: pointer; line-height: 1.5; text-align: center; }
.btn:hover { background: #144a91; border-color: #144a91; color: #ffffff; text-decoration: none; }
.btn.secondary { background: #ffffff; color: #1a5fb4; }
.btn.secondary:hover { background: #f6f7f9; }
.btn.ghost { background: #ffffff; color: #3a424d; border-color: #d5d9df; }
.btn.ghost:hover { background: #f6f7f9; }
.btn.small { padding: 5px 12px; font-size: 13px; }
.btn[disabled] { background: #f2f3f5; color: #9aa1aa; border-color: #e5e7eb; cursor: not-allowed; }
.btn[disabled]:hover { background: #f2f3f5; color: #9aa1aa; border-color: #e5e7eb; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* 表单 */
.form { max-width: 760px; }
.form-row { margin-bottom: 18px; }
.form-row > label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-row .hint { font-size: 12px; color: #5b6470; margin-top: 5px; }
.form-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid #d5d9df; border-radius: 6px;
  font-family: inherit; font-size: 14px; color: #1f2328; background: #ffffff; line-height: 1.6;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: #1a5fb4; }
textarea { min-height: 110px; resize: vertical; }
input[type=file] { font-size: 13px; }
.check-row { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; }
.check-row input { margin-top: 5px; }
fieldset { border: 1px solid #e5e7eb; border-radius: 8px; padding: 18px 22px 4px; margin: 0 0 20px; }
legend { padding: 0 8px; font-weight: 600; font-size: 15px; }
.msg { display: none; border: 1px solid #c9dcf5; background: #f2f7fe; color: #144a91; border-radius: 6px; padding: 11px 14px; font-size: 14px; margin: 14px 0; }
.msg.on { display: block; }
.msg.warn { border-color: #e5d3ad; background: #fdf9f0; color: #6b5325; }
.pane { display: none; }
.pane.on { display: block; }

/* 面包屑、标签、状态 */
.breadcrumb { font-size: 13px; color: #5b6470; padding: 18px 0 0; }
.breadcrumb a { color: #5b6470; }
.page-head { padding: 26px 0 20px; border-bottom: 1px solid #e5e7eb; margin-bottom: 28px; }
.page-head h1 { margin-bottom: 8px; }
.tag { display: inline-block; border: 1px solid #d5d9df; border-radius: 4px; padding: 1px 8px; font-size: 12px; color: #5b6470; margin-right: 6px; }
.tag.blue { border-color: #c9dcf5; color: #1a5fb4; }
.status { font-weight: 600; }
.status.wait { color: #8a5a12; }
.status.done { color: #1a5fb4; }
.status.off { color: #5b6470; }
.timeline { border-left: 2px solid #e5e7eb; margin: 10px 0 0 8px; padding-left: 18px; }
.timeline li { list-style: none; position: relative; margin-bottom: 8px; font-size: 14px; }
.timeline li::before { content: ""; position: absolute; left: -24px; top: 9px; width: 8px; height: 8px; border-radius: 50%; background: #1a5fb4; }
.timeline { list-style: none; }
.notice { border-left: 3px solid #1a5fb4; padding: 6px 0 6px 14px; color: #3a424d; font-size: 14px; margin: 18px 0; }

/* 步骤 */
.steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.step { border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; background: #ffffff; }
.step .no { font-size: 13px; color: #1a5fb4; font-weight: 600; margin-bottom: 6px; }
.step h4 { font-size: 15px; margin-bottom: 6px; }
.step p { font-size: 13px; color: #5b6470; margin: 0; }

/* 页脚：深蓝科技感页脚 */
.site-footer { background: #0c1b30 !important; border-top: 1px solid rgba(255, 255, 255, .08) !important; color: #c0d3e8 !important; padding: 46px 0 24px !important; margin-top: 40px !important; }
.site-footer .company { font-size: 16px !important; font-weight: 600 !important; margin-bottom: 12px !important; color: #ffffff !important; letter-spacing: .5px; }
.site-footer p { font-size: 13px !important; color: #9bb5d1 !important; margin-bottom: 8px !important; line-height: 1.6; }
.site-footer a { color: #c0d3e8 !important; }
.site-footer a:hover { color: #ffffff !important; text-decoration: underline !important; }
.footer-grid { display: grid !important; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) !important; gap: 48px !important; }
.footer-col-title { font-size: 15px !important; font-weight: 600 !important; margin-bottom: 14px !important; color: #ffffff !important; border-left: 3px solid #3b82f6 !important; padding-left: 8px !important; line-height: 1.2; }
.footer-links { display: flex !important; flex-direction: column !important; gap: 8px !important; font-size: 13px !important; margin-bottom: 0 !important; }
.footer-links a { color: #9bb5d1 !important; }
.footer-links a:hover { color: #ffffff !important; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1) !important; margin-top: 32px !important; padding-top: 18px !important; font-size: 13px !important; color: #7f9bb9 !important; text-align: center !important; }

/* 文章 */
.article { max-width: 800px; }
.article h2 { font-size: 20px; margin: 30px 0 12px; }
.article h3 { font-size: 16px; margin: 22px 0 8px; }
.article p, .article li { color: #3a424d; }
.article .meta { border-bottom: 1px solid #e5e7eb; padding-bottom: 14px; margin-bottom: 22px; font-size: 13px; color: #5b6470; }
.article .meta span { margin-right: 18px; }

/* 详情布局 */
.detail-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 36px; align-items: start; }
.side-panel { border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px 22px; position: sticky; top: 92px; }
.side-panel h3 { margin-bottom: 12px; }
.price { font-size: 26px; font-weight: 650; color: #1a5fb4; }

@media (max-width: 1020px) {
  .header-inner { flex-wrap: wrap; gap: 8px 20px; padding-top: 10px; padding-bottom: 8px; }
  .main-nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 6px; flex: auto; }
  .nav-actions { margin-left: auto; }
  .section, .hero { scroll-margin-top: 116px; }
  .side-panel { position: static; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid, .detail-grid, .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  h1 { font-size: 25px; }
  .hero h1 { font-size: 27px; }
  .grid-2, .grid-3, .form-grid-2, .stats, .steps { grid-template-columns: 1fr; }
  .wrap { padding: 0 16px; }
  .section { padding: 32px 0; }
}

/* 朴素排版：白底、细线、直角、表格，不用卡片与色块 */
.wrap { max-width: 1160px; }
* { border-radius: 0 !important; }
.timeline li::before { display: none; }
.timeline { border-left: 1px solid #d5d9df; padding-left: 14px; }
.header-inner { min-height: 62px; gap: 20px; }
.brand strong { font-size: 18px; letter-spacing: 0; }
.main-nav { gap: 18px; }
.main-nav a { font-size: 14px; padding: 0; border-bottom: 0; }
.main-nav a.on { color: #1a5fb4; font-weight: 600; }
.nav-actions { gap: 12px; }
.nav-publish { display: inline-block; background: #1a5fb4; border: 1px solid #1a5fb4; color: #ffffff; padding: 5px 12px; font-size: 14px; line-height: 1.5; }
.nav-publish:hover { background: #144a91; border-color: #144a91; color: #ffffff; text-decoration: none; }

.hero { background: #ffffff; padding: 44px 0 40px; }
.hero h1 { font-size: 30px; }
.hero .lead { max-width: 660px; }
.hero-actions { align-items: center; }
.hero-panel { border: 0; padding: 0; background: #ffffff; }
.card { border: 0; border-top: 1px solid #e5e7eb; padding: 16px 0 0; }
.step { border: 0; border-bottom: 1px solid #e5e7eb; padding: 0 0 12px; }

.section { padding: 38px 0; }
.section.soft { background: #ffffff; }
.section-head { border-bottom: 1px solid #e5e7eb; padding-bottom: 10px; margin-bottom: 18px; }
.section-head h2 { font-size: 20px; }
.section-head .head-side a { color: #1a5fb4; font-size: 13px; }
.section-head .head-side a:hover { text-decoration: underline; }
.home-summary { font-size: 14px; color: #3a424d; margin: 0 0 16px; }
.section table.data th { background: #ffffff; border-bottom: 1px solid #d5d9df; }
.notice { border-left: 0; border-top: 1px solid #e5e7eb; padding: 10px 0 0; }

@media (max-width: 640px) {
  .section-head h2 { font-size: 18px; }
  .nav-publish { padding: 4px 9px; font-size: 13px; }
}

.hero.hero-banner { position: relative; padding: 0; min-height: 430px; border-bottom: 0;
  background: #0d1f38 url("img/hero.jpg") center center / cover no-repeat; }
.hero-banner::before { content: ""; position: absolute; inset: 0; background: rgba(8, 22, 42, .46); }
.hero-banner .wrap { position: relative; z-index: 1; padding-top: 132px; padding-bottom: 54px; }
.hero-banner h1 { color: #ffffff; font-size: 36px; max-width: 780px; margin-bottom: 14px; }
.hero-banner .lead { color: #e6eef8; font-size: 16px; max-width: 640px; margin-bottom: 24px; }
.hero-banner .hero-actions { gap: 16px; }
.hero-banner .hero-actions > a.small { color: #ffffff; }
.hero-banner .btn.secondary { background: #ffffff; color: #1a5fb4; border-color: #ffffff; }
.hero-banner .btn.secondary:hover { background: #eaf1fb; color: #144a91; }
.hero-banner .home-summary { color: #dce7f5; margin-top: 22px; }

.join-strip { padding: 24px 0; border-bottom: 1px solid #eef0f3; }
.join-strip .wrap { display: flex; align-items: baseline; gap: 24px; flex-wrap: wrap; }
.join-strip h3 { font-size: 16px; flex: none; }
.join-strip ol { display: flex; gap: 24px; flex: 1; margin: 0; padding-left: 20px; flex-wrap: wrap; }
.join-strip li { font-size: 14px; color: #3a424d; margin-bottom: 0; }
.join-strip .btn-row { flex: none; }

.section-head.center { position: relative; justify-content: center; text-align: center;
  border-bottom: 0; padding-bottom: 0; margin-bottom: 24px; }
.section-head.center h2 { font-size: 24px; font-weight: 700; }
.section-head.center h2 em { font-style: normal; color: #1a5fb4; }
.section-head.center .head-side { position: absolute; right: 0; bottom: 2px; }

.news-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.news-card { display: flex; flex-direction: column; border: 1px solid #e5e7eb; background: #ffffff; color: #1f2328; position: relative; transition: border-color .2s, box-shadow .2s; }
.news-card:hover { border-color: #3b82f6; text-decoration: none; box-shadow: 0 4px 18px rgba(12, 27, 48, 0.06); }
.news-card .nc-img-wrap { position: relative; width: 100%; height: 172px; overflow: hidden; border-bottom: 1px solid #e5e7eb; background: #0c1b30; }
.news-card .nc-img-wrap img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.news-card:hover .nc-img-wrap img { transform: scale(1.03); }
.news-fee-badge { position: absolute; top: 10px; right: 10px; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 2px; }
.news-fee-badge.paid { background: #dc2626; color: #ffffff; }
.news-fee-badge.free { background: rgba(16, 185, 129, 0.9); color: #ffffff; }
.nc-body { padding: 14px 16px 12px; flex: 1; display: flex; flex-direction: column; }
.nc-dir { font-size: 12px; color: #3b82f6; font-weight: 600; margin-bottom: 6px; }
.news-card h3 { font-size: 15px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; color: #1e293b; }
.news-card:hover h3 { color: #2563eb; }
.news-card .desc { font-size: 13px; color: #64748b; line-height: 1.65; margin: 0; }
.news-card .meta-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; border-top: 1px solid #e5e7eb; padding: 9px 16px; font-size: 12px; color: #64748b; background: #fafbfc; }
.nc-fee-tag.paid { color: #dc2626; font-weight: 700; font-size: 13px; }
.nc-fee-tag.free { color: #16a34a; font-weight: 500; }

/* 登录与注册卡片容器 */
.auth-box {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 36px 40px 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  margin-top: 10px;
}
.auth-box .form-row { margin-bottom: 22px; }
.auth-box .form-row label { font-size: 14px; font-weight: 600; color: #1f2328; margin-bottom: 8px; display: block; }
.auth-box input[type=email], .auth-box input[type=password], .auth-box input[type=text], .auth-box select {
  height: 44px;
  padding: 0 14px;
  border: 1px solid #d0d7de;
  font-size: 14px;
  background: #fbfcfd;
  transition: border-color .2s, box-shadow .2s;
}
.auth-box input:focus, .auth-box select:focus {
  background: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.auth-box .btn-row { margin-top: 26px; }
.auth-box .btn-row .btn { height: 42px; line-height: 40px; padding: 0 28px; font-size: 15px; font-weight: 500; }

/* 电商风格商品展示卡片网格 (淘宝/京东商城样式) */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 30px;
}
.product-card {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  position: relative;
}
.product-card:hover {
  transform: translateY(-3px);
  border-color: #3b82f6;
  box-shadow: 0 8px 24px rgba(12, 27, 48, 0.08);
  text-decoration: none;
}
.product-card .img-wrap {
  width: 100%;
  height: 220px;
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid #f1f5f9;
  overflow: hidden;
  padding: 12px;
}
.product-card .img-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform .3s;
}
.product-card:hover .img-wrap img {
  transform: scale(1.04);
}
.product-card .info {
  padding: 16px 18px 14px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card .category-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  color: #3b82f6;
  background: #eff6ff;
  padding: 2px 8px;
  margin-bottom: 8px;
  font-weight: 500;
}
.product-card .title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: #1f2328;
  margin-bottom: 8px;
  height: 45px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.product-card:hover .title {
  color: #2563eb;
}
.product-card .params-summary {
  font-size: 12px;
  color: #64748b;
  margin-bottom: 14px;
  line-height: 1.6;
  height: 38px;
  overflow: hidden;
}
.product-card .foot {
  margin-top: auto;
  border-top: 1px dashed #e2e8f0;
  padding-top: 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.product-card .price-box {
  color: #dc2626;
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}
.product-card .price-box small {
  font-size: 13px;
  font-weight: normal;
}
.product-card .action-btn {
  display: inline-block;
  background: #3b82f6;
  color: #ffffff;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 2px;
}
.product-card .action-btn:hover {
  background: #2563eb;
  color: #ffffff;
  text-decoration: none;
}
.product-card .merchant-line {
  font-size: 12px;
  color: #94a3b8;
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
}

@media (max-width: 1020px) {
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .product-grid { grid-template-columns: 1fr; }
  .auth-box { padding: 24px 20px; }
}