:root {
  --ink: #2C2C2A;
  --ink-2: #5F5E5A;
  --ink-3: #888780;
  --line: #B4B2A9;
  --line-light: #D3D1C7;
  --bg-warm: #F1EFE8;
  --bg-warm-2: #E9E6DD;
  --white: #FFFFFF;
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  font-size: 15px;
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1 { font-size: 34px; font-weight: 600; letter-spacing: 1px; }
h2 { font-size: 24px; font-weight: 600; letter-spacing: 1px; }
h3 { font-size: 16px; font-weight: 500; margin-bottom: 8px; }
.muted { color: var(--ink-3); font-size: 14px; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header { border-bottom: 1px solid var(--line-light); background: var(--white); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; height: 68px; gap: 24px; }
.logo { font-size: 20px; font-weight: 600; letter-spacing: 2px; white-space: nowrap; }
.logo-en { font-size: 11px; color: var(--ink-3); margin-left: 8px; letter-spacing: 3px; font-weight: 400; }
.main-nav { display: flex; gap: 28px; margin-left: auto; }
.main-nav a { font-size: 14px; color: var(--ink-2); padding: 4px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--ink); }
.main-nav a.active { color: var(--ink); border-bottom-color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 14px; white-space: nowrap; }
.lang-switch {
  font-size: 13px; font-weight: 500; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 16px; padding: 4px 14px;
  letter-spacing: 1px;
}
.lang-switch:hover { color: var(--ink); border-color: var(--ink); }
.nav-cta { white-space: nowrap; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 8px; background: none; border: none; cursor: pointer;
}
.nav-toggle span { display: block; width: 100%; height: 2px; background: var(--ink); border-radius: 1px; transition: transform .2s, opacity .2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- buttons ---------- */
.btn-solid {
  display: inline-block; padding: 10px 24px; font-size: 14px;
  background: var(--ink); color: var(--white); border: 1px solid var(--ink);
  border-radius: var(--radius); cursor: pointer; transition: opacity .15s;
}
.btn-solid:hover { opacity: .85; }
.btn-outline {
  display: inline-block; padding: 10px 24px; font-size: 14px;
  color: var(--ink); background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); cursor: pointer; transition: all .15s;
}
.btn-outline:hover { border-color: var(--ink); }
.btn-solid.wide { width: 100%; }

/* ---------- hero ---------- */
.hero { background: var(--bg-warm); border-bottom: 1px solid var(--line-light); }
.hero-inner { display: flex; align-items: center; gap: 48px; padding: 72px 24px; }
.hero-text { flex: 1.2; }
.hero h1 { font-size: 40px; line-height: 1.3; margin-bottom: 16px; }
.hero-sub { color: var(--ink-2); max-width: 460px; font-size: 16px; }
.hero-actions { margin-top: 28px; display: flex; gap: 12px; }
.hero-figure { flex: 1; }
.hero-figure-inner {
  height: 260px; background: var(--bg-warm-2); border: 1px solid var(--line-light);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: var(--ink-3); font-size: 14px; letter-spacing: 2px;
}

/* ---------- stats ---------- */
.stats-strip { border-bottom: 1px solid var(--line-light); }
.stats-inner { display: flex; padding: 32px 24px; gap: 16px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 160px; text-align: center; border-left: 1px solid var(--line-light); }
.stat:first-child { border-left: none; }
.stat strong { display: block; font-size: 26px; font-weight: 600; letter-spacing: 1px; }
.stat span { font-size: 13px; color: var(--ink-3); }

/* ---------- sections ---------- */
.section { padding: 56px 24px; }
.section-gray { background: var(--bg-warm); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 28px; }
.link-more { font-size: 14px; color: var(--ink-2); border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.link-more:hover { color: var(--ink); border-color: var(--ink); }
.h2 { margin-bottom: 24px; }

.two-col { display: flex; gap: 48px; align-items: center; }
.two-col > div:first-child { flex: 1.1; }
.gray-figure {
  flex: 1; height: 240px; background: var(--bg-warm-2); border: 1px solid var(--line-light);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: var(--ink-3); letter-spacing: 2px; font-size: 14px;
}
.gray-figure.tall { height: 420px; }
.feature-list { list-style: none; }
.feature-list li { padding: 12px 0; border-bottom: 1px solid var(--line-light); font-size: 15px; color: var(--ink-2); }
.feature-list strong { color: var(--ink); margin-right: 4px; }

/* ---------- product grid ---------- */
.product-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.product-card { border: 1px solid var(--line-light); border-radius: var(--radius); overflow: hidden; transition: border-color .15s; }
.product-card:hover { border-color: var(--ink); }
.product-img { aspect-ratio: 4/3; background: var(--bg-warm); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.img-holder { color: var(--ink-3); font-size: 13px; letter-spacing: 2px; }
.img-holder-lg {
  height: 100%; min-height: 380px; background: var(--bg-warm); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; color: var(--ink-3); letter-spacing: 2px;
}
.product-name { font-size: 15px; font-weight: 500; padding: 12px 14px 0; }
.product-sub { font-size: 13px; color: var(--ink-3); padding: 4px 14px 14px; }
.product-tag {
  display: inline-block; font-size: 11px; color: var(--ink-2);
  border: 1px solid var(--line); padding: 1px 8px; border-radius: 10px; margin: 10px 14px 0;
}

/* ---------- page head / crumbs ---------- */
.page-head { background: var(--bg-warm); border-bottom: 1px solid var(--line-light); padding: 40px 0; }
.crumbs { font-size: 13px; color: var(--ink-3); }
.crumbs a { border-bottom: 1px solid var(--line); }
.crumbs a:hover { color: var(--ink); }

/* ---------- filter ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 28px; }
.filter-chip {
  padding: 7px 18px; font-size: 14px; color: var(--ink-2);
  border: 1px solid var(--line-light); border-radius: 20px; background: var(--white);
}
.filter-chip:hover { border-color: var(--ink); color: var(--ink); }
.filter-chip.active { background: var(--ink); color: var(--white); border-color: var(--ink); }
.search-form { margin-left: auto; display: flex; gap: 0; }
.search-form input {
  border: 1px solid var(--line-light); border-right: none; border-radius: var(--radius) 0 0 var(--radius);
  padding: 7px 14px; font-size: 14px; outline: none; width: 220px;
}
.search-form button {
  border: 1px solid var(--ink); background: var(--ink); color: var(--white);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 7px 18px; font-size: 14px; cursor: pointer;
}
.empty-tip { padding: 60px 0; text-align: center; }

/* ---------- 分页 ---------- */
.pager { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 40px; }
.pager a, .pager span {
  min-width: 38px; padding: 8px 12px; text-align: center;
  border: 1px solid var(--line-light); border-radius: var(--radius);
  font-size: 13px; color: var(--ink-2); background: var(--white);
}
.pager a:hover { border-color: var(--ink); color: var(--ink); }
.pager .current { background: var(--ink); border-color: var(--ink); color: var(--white); font-weight: 500; }
.pager .disabled, .pager .gap { color: var(--ink-3); border-color: transparent; background: transparent; }
.pager-info { text-align: center; margin-top: 14px; font-size: 12px; color: var(--ink-3); }

/* ---------- detail ---------- */
.detail-layout { display: flex; gap: 48px; align-items: flex-start; }
.detail-img { flex: 1; }
.detail-img img { border-radius: 10px; border: 1px solid var(--line-light); }
.detail-info { flex: 1; }
.detail-title { font-size: 28px; font-weight: 600; margin: 8px 0 12px; }
.detail-summary { color: var(--ink-2); margin-bottom: 20px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; }
.spec-table td { border: 1px solid var(--line-light); padding: 9px 14px; font-size: 14px; }
.spec-table td:first-child { background: var(--bg-warm); color: var(--ink-2); width: 130px; }
.spec-full { color: var(--ink-2); }
.detail-desc { max-width: 760px; color: var(--ink-2); }

/* ---------- about / contact ---------- */
.about-layout { display: flex; gap: 48px; }
.about-text { flex: 1.1; }
.about-text p { margin-bottom: 16px; color: var(--ink-2); }
/* 注：contact-form / contact-info 样式已随在线询价功能移除 */
.product-form label, .settings-form label { font-size: 13px; color: var(--ink-2); margin-top: 10px; }

/* ---------- footer ---------- */
.site-footer { background: var(--bg-warm); border-top: 1px solid var(--line-light); margin-top: 40px; }
.footer-inner { display: flex; gap: 60px; padding: 48px 24px 32px; }
.footer-inner > div:first-child { flex: 1.5; }
.footer-logo { font-size: 20px; font-weight: 600; letter-spacing: 2px; margin-bottom: 10px; }
.footer-col { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.footer-col h4 { font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.footer-col a, .footer-col p { font-size: 13px; color: var(--ink-2); }
.footer-col a:hover { color: var(--ink); }
/* 页脚产品分类：两列排布 */
.footer-cat-list { column-count: 2; column-gap: 28px; }
.footer-cat-list a { display: block; break-inside: avoid; }
.footer-bottom { border-top: 1px solid var(--line-light); padding: 16px 24px; font-size: 12px; color: var(--ink-3); }

/* ---------- flash ---------- */
.flash { margin: 16px 24px; padding: 10px 16px; border-radius: var(--radius); font-size: 14px; }
.flash-ok { background: #EAF3DE; color: #27500A; }
.flash-error { background: #FCEBEB; color: #791F1F; }

/* ---------- admin ---------- */
.admin-body { background: #F6F5F1; }
.admin-shell { display: flex; min-height: 100vh; }
.admin-side {
  width: 200px; background: var(--ink); color: var(--white); display: flex; flex-direction: column;
  padding: 20px 0; position: sticky; top: 0; height: 100vh;
}
.admin-brand { padding: 0 20px 20px; font-size: 17px; font-weight: 600; border-bottom: 1px solid rgba(255,255,255,.12); }
.admin-brand span { display: block; font-size: 11px; font-weight: 400; color: rgba(255,255,255,.5); letter-spacing: 2px; }
.admin-side nav { display: flex; flex-direction: column; padding: 12px 0; flex: 1; }
.admin-side nav a { padding: 11px 20px; font-size: 14px; color: rgba(255,255,255,.65); }
.admin-side nav a:hover { color: var(--white); background: rgba(255,255,255,.06); }
.admin-side nav a.active { color: var(--white); background: rgba(255,255,255,.1); border-left: 3px solid var(--white); padding-left: 17px; }
.admin-side-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 12px; }
.admin-side-bottom a { display: block; padding: 8px 20px; font-size: 13px; color: rgba(255,255,255,.5); }
.admin-side-bottom a:hover { color: var(--white); }

.admin-main { flex: 1; padding: 28px 36px; }
.admin-page-title { font-size: 22px; font-weight: 600; margin-bottom: 20px; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.panel-head.with-action { align-items: center; }
.admin-panel { background: var(--white); border: 1px solid var(--line-light); border-radius: 10px; padding: 20px 24px; margin-bottom: 20px; }
.admin-panel h2 { font-size: 16px; }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { background: var(--white); border: 1px solid var(--line-light); border-radius: 10px; padding: 16px 20px; }
.stat-card span { display: block; font-size: 13px; color: var(--ink-3); }
.stat-card strong { font-size: 26px; font-weight: 600; }

.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th { text-align: left; font-size: 12px; color: var(--ink-3); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.admin-table td { padding: 10px; border-bottom: 1px solid var(--line-light); vertical-align: middle; }
.admin-table a:hover { color: var(--ink-2); }
.nowrap { white-space: nowrap; }
.thumb { width: 52px; height: 40px; object-fit: cover; border-radius: 4px; border: 1px solid var(--line-light); }
.thumb-empty { display: flex; align-items: center; justify-content: center; background: var(--bg-warm); color: var(--ink-3); font-size: 11px; }
.thumb-lg { width: 100%; max-height: 200px; object-fit: contain; border: 1px solid var(--line-light); border-radius: 6px; margin-bottom: 10px; }
.badge { font-size: 12px; padding: 2px 10px; border-radius: 10px; }
.badge-on { background: #EAF3DE; color: #27500A; }
.badge-off { background: var(--bg-warm); color: var(--ink-3); }
.inline-form { display: inline; }
.link-danger { background: none; border: none; color: #A32D2D; font-size: 14px; cursor: pointer; padding: 0; }
.link-danger:hover { text-decoration: underline; }
.quick-actions { display: flex; gap: 12px; }

.product-form .form-row, .settings-form .form-row { display: flex; gap: 32px; }
.form-col { flex: 1; display: flex; flex-direction: column; }
.form-col.narrow { flex: 0 0 280px; }
.product-form input[type="text"], .product-form select, .product-form textarea,
.settings-form input[type="text"], .settings-form textarea, .login-card input {
  border: 1px solid var(--line-light); border-radius: var(--radius); padding: 9px 12px;
  font-size: 14px; font-family: inherit; outline: none; background: var(--white);
}
.product-form input:focus, .product-form textarea:focus, .product-form select:focus,
.settings-form input:focus, .settings-form textarea:focus, .login-card input:focus { border-color: var(--ink); }
.product-form input[type="file"] { margin-top: 10px; font-size: 13px; }
.check-line { display: flex; align-items: center; gap: 8px; margin-top: 14px !important; cursor: pointer; }
.check-line input { width: 16px; height: 16px; }
.form-actions { margin-top: 24px; display: flex; gap: 12px; }
.upload-placeholder {
  border: 1px dashed var(--line); border-radius: 6px; padding: 36px 12px; text-align: center;
  color: var(--ink-2); font-size: 13px; margin-bottom: 10px; background: var(--bg-warm);
}
.inline-add { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.inline-add input[type="text"] { flex: 0 0 240px; border: 1px solid var(--line-light); border-radius: var(--radius); padding: 9px 12px; font-size: 14px; }
.inline-add input[type="number"] { border: 1px solid var(--line-light); border-radius: var(--radius); padding: 9px 12px; font-size: 14px; }
.cat-edit { margin-right: 10px; }
.cat-edit input[type="text"] {
  border: 1px solid var(--line-light); border-radius: var(--radius); padding: 6px 10px; font-size: 13px; width: 120px;
}
.cat-edit input[type="number"] {
  border: 1px solid var(--line-light); border-radius: var(--radius); padding: 6px 10px; font-size: 13px; width: 56px;
}
.link-save { background: none; border: none; color: #2A5A18; font-size: 14px; cursor: pointer; padding: 0; margin-right: 10px; }
.link-save:hover { text-decoration: underline; }

/* ---------- login ---------- */
.login-body { background: var(--bg-warm); display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  background: var(--white); border: 1px solid var(--line-light); border-radius: 12px;
  padding: 40px; width: 360px; display: flex; flex-direction: column; gap: 6px;
}
.login-card h1 { font-size: 22px; }
.login-card form { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; }
.login-card label { font-size: 13px; color: var(--ink-2); margin-top: 8px; }
.login-card .btn-solid { margin-top: 18px; }
.login-card .flash { margin: 10px 0 0; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .hero-inner { padding: 48px 24px; gap: 32px; }
  .footer-inner { gap: 36px; }
}

@media (max-width: 860px) {
  body { font-size: 15px; -webkit-text-size-adjust: 100%; }

  /* 顶部：汉堡菜单 */
  .header-inner { height: 60px; gap: 12px; }
  .logo { font-size: 17px; }
  .logo-en { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .header-actions { margin-left: 0; gap: 10px; }
  .nav-cta { display: none; }
  .main-nav {
    display: none;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--white); flex-direction: column; gap: 0;
    padding: 8px 24px 16px; border-bottom: 1px solid var(--line-light);
    box-shadow: 0 16px 32px rgba(44,44,42,.08);
  }
  .site-header { position: sticky; }
  .main-nav.open { display: flex; }
  .main-nav a {
    font-size: 16px; padding: 14px 0; border-bottom: 1px solid var(--line-light);
  }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav a.active { border-bottom-color: var(--ink); }

  /* hero 与区块 */
  .hero-inner, .two-col, .detail-layout, .about-layout,
  .product-form .form-row, .settings-form .form-row { flex-direction: column; }
  .hero-inner { padding: 36px 24px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-figure-inner { height: 160px; }
  .section { padding: 36px 24px; }
  .section-head { flex-direction: column; gap: 6px; align-items: flex-start; margin-bottom: 20px; }
  .h2 { font-size: 21px; }
  .gray-figure { height: 180px; }
  .gray-figure.tall { height: 220px; }

  /* 数据条：两列 */
  .stats-inner { padding: 24px 16px; }
  .stat { flex: 1 1 45%; min-width: 130px; border-left: none; margin-bottom: 12px; }
  .stat strong { font-size: 21px; }

  /* 产品网格更紧凑 */
  .product-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }

  /* 筛选与搜索 */
  .filter-bar { gap: 8px; }
  .filter-chip { padding: 8px 16px; font-size: 14px; }
  .search-form { margin-left: 0; width: 100%; }
  .search-form input { flex: 1; width: auto; min-width: 0; }

  /* 详情页 */
  .page-head { padding: 28px 0; }
  .detail-title { font-size: 22px; }
  .spec-table td { padding: 8px 10px; font-size: 13px; }
  .spec-table td:first-child { width: 104px; }
  .img-holder-lg { min-height: 260px; }
  /* 页脚 */
  .footer-inner { flex-direction: column; gap: 28px; padding: 36px 24px 24px; }
  .footer-cat-list { column-gap: 20px; }
  .footer-bottom { padding: 14px 24px; }

  /* 后台：侧栏变顶部横排 */
  .admin-shell { flex-direction: column; }
  .admin-side {
    width: 100%; height: auto; position: static; flex-direction: row; align-items: center;
    overflow-x: auto; padding: 0; -webkit-overflow-scrolling: touch;
  }
  .admin-brand { padding: 14px 16px; border-bottom: none; border-right: 1px solid rgba(255,255,255,.12); white-space: nowrap; font-size: 15px; }
  .admin-brand span { display: none; }
  .admin-side nav { flex-direction: row; padding: 0; flex: 0 0 auto; }
  .admin-side nav a { white-space: nowrap; padding: 18px 14px; font-size: 14px; }
  .admin-side nav a.active { border-left: none; border-bottom: 3px solid var(--white); padding-left: 14px; background: none; }
  .admin-side-bottom { border-top: none; border-left: 1px solid rgba(255,255,255,.12); padding: 0; margin-left: auto; display: flex; flex: 0 0 auto; }
  .admin-side-bottom a { padding: 18px 14px; white-space: nowrap; }
  .admin-main { padding: 18px 16px; }

  /* 后台面板与表格：横向滚动 */
  .admin-panel { padding: 14px 14px; border-radius: 8px; }
  .admin-main { overflow-x: hidden; }
  .admin-panel { overflow-x: auto; }
  .admin-table { min-width: 640px; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card strong { font-size: 21px; }
  .form-col.narrow { flex: 1; }
  .form-actions { flex-wrap: wrap; }
  .cat-edit input[type="text"] { width: 100px; }
  .flash { margin: 12px 16px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 24px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .product-name { font-size: 13px; padding: 10px 10px 0; }
  .product-sub { font-size: 12px; padding: 4px 10px 12px; }
  .stat-cards { grid-template-columns: 1fr; }
  .login-card { width: auto; margin: 0 16px; padding: 28px 22px; }
}