:root {
  --primary: #00A27A;
  --primary-dark: #008A66;
  --primary-light: #E6F7F1;
  --secondary: #2E7D8E;
  --accent: #FF9F43;
  --text: #1F2937;
  --text-light: #4B5563;
  --text-muted: #6B7280;
  --bg: #FFFFFF;
  --bg-soft: #F9FAFB;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --max-width: 1500px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.font-large { font-size: var(--font-size-lg); line-height: 1.6; }
body.font-extra-large { font-size: var(--font-size-xl); line-height: 1.65; }

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 14px; }

/* ========== Header ========== */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
  flex-shrink: 0;
}

.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-start;
  min-width: 0;
  padding-left: 16px;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 2px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.main-nav a {
  display: block;
  padding: 8px 10px;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all .2s;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.header-right .search-box input {
  width: 110px;
  font-size: 12px;
  padding: 5px 10px 5px 28px;
  border-radius: 16px;
}

.header-right .font-switcher button {
  font-size: 12px;
  padding: 4px 8px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  padding: 8px 14px 8px 36px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 14px;
  width: 160px;
  transition: border-color .2s;
  background: var(--bg-soft);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  font-size: 13px;
  opacity: .6;
}

.font-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-soft);
  border-radius: 20px;
  padding: 4px;
}

.font-switcher button {
  border: none;
  background: transparent;
  padding: 4px 10px;
  border-radius: 16px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-light);
  transition: all .2s;
}

.font-switcher button.active,
.font-switcher button:hover {
  background: var(--primary);
  color: #fff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text);
}

/* ========== Hero ========== */
.hero {
  background: linear-gradient(135deg, #00A27A 0%, #2E7D8E 100%);
  color: #fff;
  padding: 48px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 40%),
                    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0%, transparent 40%);
}

.hero-content { position: relative; max-width: 760px; margin: 0 auto; }

.hero h1 {
  font-size: 38px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.25;
}

.hero .subtitle {
  font-size: 17px;
  opacity: 0.95;
  line-height: 1.6;
  margin-bottom: 0;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-align: center;
}

.btn-primary { background: #fff; color: var(--primary-dark); }
.btn-primary:hover { background: #F3F4F6; transform: translateY(-1px); text-decoration: none; }

.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.7); }
.btn-outline:hover { background: rgba(255,255,255,0.15); text-decoration: none; }

.btn-solid { background: var(--primary); color: #fff; }
.btn-solid:hover { background: var(--primary-dark); transform: translateY(-1px); text-decoration: none; }

/* ========== Section common ========== */
section { padding: 24px 0; }

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  text-align: left;
}

.section-title > div {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.section-title h2 {
  font-size: 20px;
  color: var(--text);
  margin-bottom: 0;
  font-weight: 700;
  white-space: nowrap;
}

.section-title p {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 0;
}

/* ========== Home layout ========== */
.home-layout {
  background: var(--bg-soft);
  padding: 24px 0;
}

.home-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

.home-categories .section-title {
  margin-bottom: 14px;
}

.home-categories .category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 8px;
  text-align: center;
}

.home-categories .category-icon {
  width: 44px;
  height: 44px;
  font-size: 22px;
  flex-shrink: 0;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-categories .category-card h3 {
  font-size: 15px;
  margin: 0 0 4px 0;
}

.home-categories .category-card p {
  font-size: 12px;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.4;
}

.home-articles {
  background: #fff;
  border-radius: var(--radius);
  padding: 18px;
  border: 1px solid var(--border);
  position: sticky;
  top: 20px;
}

.home-articles .section-title {
  text-align: left;
  justify-content: flex-start;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.home-articles .section-title h2 {
  font-size: 17px;
}

.home-articles .section-title p {
  font-size: 12px;
}

.articles-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--border);
  transition: all .2s;
}

.article-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.article-item:hover {
  opacity: 0.8;
}

.article-icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  background: var(--primary-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-info {
  flex: 1;
  min-width: 0;
}

.article-info .article-meta {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 5px;
  align-items: center;
}

.article-info h3 {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-info h3 a {
  color: var(--text);
}

.article-info h3 a:hover {
  color: var(--primary);
}

/* ========== Categories ========== */
.categories {
  background: var(--bg-soft);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.category-card {
  background: #fff;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all .2s;
  border: 1px solid var(--border);
  color: var(--text);
  display: block;
}

.category-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--primary);
  text-decoration: none;
  color: var(--text);
}

.category-icon {
  width: 40px; height: 40px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin: 0 auto 8px;
}

.category-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
  line-height: 1.3;
}

.category-card p {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.5;
}

/* ========== Articles list ========== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.article-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all .2s;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-color: var(--primary);
}

.article-card-banner {
  height: 80px;
  background: linear-gradient(135deg, var(--primary-light), #D1E7DD);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--primary-dark);
}

.article-card-body {
  padding: 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  gap: 10px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.article-tag {
  display: inline-block;
  padding: 1px 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 10px;
  font-size: 11px;
}

.article-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--text);
}

.article-card h3 a:hover { color: var(--primary); text-decoration: none; }

.article-card .summary {
  color: var(--text-light);
  font-size: 12px;
  line-height: 1.6;
  margin-bottom: 8px;
  flex: 1;
}

.article-card .read-more {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
}

/* ========== 甄选版块 ========== */
.selection { background: #fff; }

.selection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.selection-card {
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 16px 12px;
  text-align: center;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: all .2s;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.selection-card:hover {
  background: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
  color: var(--text);
  text-decoration: none;
}

.selection-icon {
  font-size: 32px;
  margin-bottom: 6px;
}

.selection-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.selection-slogan {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.5;
  min-height: 36px;
}

.selection-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.selection-link {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-top: auto;
}

/* 甄选详情页 - 商品卡片 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .2s;
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
  border-color: var(--primary);
}

.product-image {
  background: linear-gradient(135deg, var(--primary-light), #E0F7FA);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-placeholder {
  font-size: 48px;
}

.product-body {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-body h4 {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 8px;
  font-weight: 600;
}

.product-note {
  color: var(--text-light);
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.product-price {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
}

.product-link {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.product-link:hover { text-decoration: underline; }

/* ========== Breadcrumb ========== */
.breadcrumb {
  background: var(--bg-soft);
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb a { 
  color: var(--text-muted); 
  flex-shrink: 0;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 4px; color: #9CA3AF; flex-shrink: 0; }
.breadcrumb .current { 
  color: var(--text); 
  font-weight: 500; 
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  max-width: 150px;
}

/* ========== Article detail ========== */
.article-detail {
  background: #fff;
  padding: 28px 0;
}

.article-main {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 16px;
}

.article-header {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.article-header .article-meta {
  justify-content: center;
  margin-bottom: 8px;
}

.article-header h1 {
  font-size: 22px;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 700;
}

.article-header .lead {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  font-style: italic;
  background: var(--primary-light);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  text-align: left;
}

.article-body {
  font-size: 15px;
  line-height: 1.75;
  color: #2D3748;
}

.article-body h2 {
  font-size: 18px;
  margin: 22px 0 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
}

.article-body h3 {
  font-size: 16px;
  margin: 18px 0 6px;
  color: var(--text);
  font-weight: 600;
}

.article-body p { margin-bottom: 12px; }

.article-body ul, .article-body ol {
  margin: 10px 0 14px 22px;
}

.article-body li { margin-bottom: 6px; font-size: 14px; }

.article-body strong { color: var(--primary-dark); }

.article-body .tip-box,
.article-body .warning-box,
.article-body .info-box {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin: 14px 0;
  font-size: 14px;
}

.article-body .tip-box {
  background: #FFF8E7;
  border-left: 3px solid var(--accent);
}

.article-body .warning-box {
  background: #FEF2F2;
  border-left: 3px solid #DC2626;
}

.article-body .info-box {
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
}

.article-body blockquote {
  border-left: 3px solid var(--primary);
  padding: 8px 16px;
  margin: 12px 0;
  background: var(--bg-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-light);
  font-style: italic;
  font-size: 14px;
}

.article-source {
  margin-top: 18px;
  padding: 10px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* ========== CTA / Miniapp promote ========== */
.miniapp-cta {
  margin: 18px 0;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary-light), #E0F2F7);
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid rgba(0, 162, 122, 0.2);
}

.miniapp-cta h3 {
  font-size: 16px;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.miniapp-cta p {
  color: var(--text-light);
  margin-bottom: 10px;
  font-size: 13px;
}

.qrcode-placeholder {
  display: inline-block;
  width: 120px;
  height: 120px;
  background: #fff;
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-sm);
  margin: 0 auto 6px;
  overflow: hidden;
}

.qrcode-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.qrcode-placeholder .qr-icon {
  font-size: 32px;
  margin-bottom: 6px;
}

/* ========== Floating miniapp button ========== */
.floating-qrcode {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
  padding: 14px 16px 12px;
  text-align: center;
  transition: transform .3s;
  width: 160px;
}

.floating-qrcode:hover {
  transform: translateY(-2px);
}

.floating-qrcode .qr-dot {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  display: block;
  margin: 0 auto 10px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 162, 122, 0.12);
  object-fit: cover;
}

.floating-qrcode .qr-text {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}

.floating-qrcode .qr-text strong {
  display: block;
  color: var(--primary-dark);
  font-size: 14px;
}

/* ========== Footer ========== */
.site-footer {
  background: #1F2937;
  color: #D1D5DB;
  padding: 30px 0 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-col a {
  display: block;
  color: #D1D5DB;
  font-size: 13px;
  padding: 3px 0;
}

.footer-col a:hover { color: var(--primary); text-decoration: none; }

.footer-disclaimer {
  font-size: 12px;
  line-height: 1.6;
  color: #9CA3AF;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 14px;
  text-align: center;
  font-size: 13px;
  color: #9CA3AF;
  line-height: 1.8;
}

.footer-bottom a { color: #9CA3AF; }

/* ========== Page title area ========== */
.page-hero {
  background: linear-gradient(135deg, var(--primary-light), #E0F7FA);
  padding: 24px 20px;
  text-align: center;
}

.page-hero h1 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 4px;
  font-weight: 700;
}

.page-hero p {
  color: var(--text-light);
  font-size: 13px;
  max-width: 700px;
  margin: 0 auto;
}

/* ========== About / Miniapp page ========== */
.content-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px;
}

.content-page h1 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 12px;
  font-weight: 700;
}

.content-page h2 {
  font-size: 18px;
  color: var(--primary-dark);
  margin: 18px 0 8px;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--primary-light);
  font-weight: 700;
}

.content-page p { margin-bottom: 10px; line-height: 1.7; color: var(--text-light); font-size: 14px; }
.content-page ul { margin: 10px 0 14px 22px; line-height: 1.7; color: var(--text-light); font-size: 14px; }
.content-page li { margin-bottom: 4px; }

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin: 16px 0;
}

.feature-item {
  padding: 12px 14px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

.feature-item .ficon {
  font-size: 20px;
  display: block;
  margin-bottom: 4px;
}

.feature-item h3 {
  font-size: 14px;
  margin-bottom: 2px;
  color: var(--text);
  font-weight: 600;
}

.feature-item p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* ========== 404 page ========== */
.page-404 {
  padding: 50px 20px;
  text-align: center;
}

.page-404 .code {
  font-size: 80px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 12px;
}

.page-404 h1 {
  font-size: 22px;
  margin-bottom: 8px;
}

.page-404 p {
  color: var(--text-muted);
  margin-bottom: 18px;
}

/* ========== Search result ========== */
.search-header {
  padding: 24px 0 14px;
  text-align: center;
}

.search-header h1 {
  font-size: 20px;
  margin-bottom: 6px;
}

.search-header p { color: var(--text-muted); font-size: 13px; }

/* ========== Reading progress bar ========== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  width: 0%;
  z-index: 200;
  transition: width .1s;
}

/* ========== Sidebar ========== */
.sidebar-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 24px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 80px;
}

.sidebar-widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 14px;
}

.sidebar-widget h4 {
  font-size: 14px;
  color: var(--primary-dark);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--primary-light);
}

.hot-article {
  display: block;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.5;
}

.hot-article:last-child { border-bottom: none; }
.hot-article:hover { color: var(--primary); text-decoration: none; }
.hot-article .num {
  display: inline-block;
  width: 20px;
  height: 22px;
  background: var(--primary);
  color: #fff;
  border-radius: 4px;
  text-align: center;
  line-height: 22px;
  font-size: 12px;
  font-weight: 700;
  margin-right: 8px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  display: inline-block;
  padding: 6px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 20px;
  font-size: 13px;
}

.tag-cloud a:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ========== Responsive ========== */
@media (max-width: 1320px) {
  .logo { font-size: 18px; }
  .main-nav a { padding: 6px 10px; font-size: 14px; }
  .header-right .search-box input { width: 110px; }
}

@media (max-width: 1100px) {
  .sidebar-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .header-right .font-switcher { display: none; }
}

@media (max-width: 920px) {
  .header-inner { padding: 14px 16px; gap: 10px; }
  .header-right .search-box input { width: 100px; }
  .main-nav a { padding: 6px 8px; font-size: 13px; }
}

@media (max-width: 1100px) {
  .home-container {
    grid-template-columns: 1fr;
  }
  .home-articles {
    order: -1;
    position: static;
  }
  .articles-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .article-item {
    border-bottom: none;
    padding-bottom: 0;
    padding: 12px;
    background: var(--bg-soft);
    border-radius: 8px;
  }
}

@media (max-width: 768px) {
  .hero { padding: 36px 16px; }
  .hero h1 { font-size: 22px; }
  .hero .subtitle { font-size: 13px; }

  section { padding: 24px 0; }
  .section-title h2 { font-size: 18px; }
  .section-title p { font-size: 12px; }

  .header-inner { flex-wrap: wrap; padding: 12px 14px; }
  .main-nav {
    order: 3;
    width: 100%;
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav a { padding: 10px 12px; border-radius: 0; }

  .header-right {
    margin-left: auto;
  }

  .search-box input { width: 110px; padding: 6px 12px 6px 30px; font-size: 13px; }

  .mobile-toggle { display: block; }

  .article-header h1 { font-size: 18px; }
  .article-body { font-size: 14px; }
  .article-body h2 { font-size: 16px; }

  .page-hero h1 { font-size: 20px; }

  .section-title {
    gap: 8px;
    flex-wrap: wrap;
  }
  .section-title h2 { font-size: 17px; }
  .section-title p { font-size: 12px; }

  .category-grid { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .selection-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .selection-card { padding: 14px 10px; }
  .selection-icon { font-size: 24px; }
  .selection-card h3 { font-size: 14px; }

  .products-grid { grid-template-columns: 1fr; }

  .articles-grid { grid-template-columns: 1fr; }

  .floating-qrcode {
    right: 8px;
    bottom: 8px;
    padding: 8px 10px 6px;
    width: 120px;
  }
  .floating-qrcode .qr-dot {
    width: 90px;
    height: 90px;
    margin-bottom: 4px;
  }
  .floating-qrcode .qr-text { font-size: 11px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media print {
  .site-header, .floating-qrcode, .miniapp-cta, .site-footer, .sidebar { display: none; }
  .article-body { font-size: 14px; }
}

/* ========== Home page layout (overrides) ========== */
section.home-layout {
  background: var(--bg-soft);
  padding: 24px 0;
}

section.home-layout > .container.home-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

section.home-layout .home-categories {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
}

section.home-layout .home-categories .section-title {
  margin-bottom: 16px;
  text-align: left;
  justify-content: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

section.home-layout .home-categories .section-title h2 {
  font-size: 19px;
}

section.home-layout .home-categories .category-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

section.home-layout .home-categories .category-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  padding: 12px;
  text-align: left;
  background: var(--bg-soft);
}

section.home-layout .home-categories .category-icon {
  width: 40px;
  height: 40px;
  font-size: 20px;
  flex-shrink: 0;
  background: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  border: 1px solid var(--border);
}

section.home-layout .home-categories .category-card h3 {
  font-size: 14px;
  margin: 0 0 3px 0;
  text-align: left;
}

section.home-layout .home-categories .category-card p {
  font-size: 12px;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.4;
  text-align: left;
}

section.home-layout .home-articles {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
}

section.home-layout .home-articles .section-title {
  margin-bottom: 16px;
  text-align: left;
  justify-content: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

section.home-layout .home-articles .section-title h2 {
  font-size: 19px;
}

section.home-layout .articles-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

section.home-layout .article-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  transition: all .2s;
}

section.home-layout .article-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

section.home-layout .article-item:first-child {
  padding-top: 0;
}

section.home-layout .article-item:hover {
  opacity: 0.8;
}

section.home-layout .article-icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  background: var(--primary-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

section.home-layout .article-info {
  flex: 1;
  min-width: 0;
}

section.home-layout .article-info .article-meta {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 5px;
  align-items: center;
}

section.home-layout .article-info h3 {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

section.home-layout .article-info h3 a {
  color: var(--text);
}

section.home-layout .article-info h3 a:hover {
  color: var(--primary);
}

@media (max-width: 1100px) {
  section.home-layout > .container.home-container {
    grid-template-columns: 1fr;
  }
  section.home-layout .home-articles {
    order: -1;
  }
}

@media (max-width: 768px) {
  section.home-layout {
    padding: 20px 0;
  }
  section.home-layout > .container.home-container {
    gap: 16px;
  }
  section.home-layout .home-categories,
  section.home-layout .home-articles {
    padding: 16px;
  }
  section.home-layout .home-categories .category-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  section.home-layout .home-categories .category-card {
    padding: 12px;
    gap: 10px;
  }
  .nav-download-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .home-nav-grid {
    grid-template-columns: 1fr 1fr;
  }
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .selection-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== Miniapp CTA ========== */
.miniapp-cta-box {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  background: #fff;
  padding: 24px 36px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.miniapp-cta-box .qrcode-placeholder {
  flex-shrink: 0;
  margin: 0;
}

.miniapp-cta-box .qrcode-placeholder img {
  display: block;
  border-radius: 8px;
}

.miniapp-cta-text {
  text-align: left;
}

.miniapp-cta-text h3 {
  font-size: 18px;
  color: var(--text);
  margin: 0 0 6px 0;
  font-weight: 600;
}

.miniapp-cta-text p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 14px 0;
}

@media (max-width: 600px) {
  .miniapp-cta-box {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
  }
  .miniapp-cta-text {
    text-align: center;
  }
}

/* ========== Section with more link ========== */
.section-title-with-more {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
}

.section-title-with-more > div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-more-link {
  font-size: 13px;
  color: var(--primary);
  text-decoration: none;
  padding: 4px 0;
  flex-shrink: 0;
}

.section-more-link:hover {
  text-decoration: underline;
}

/* ========== 外部链接样式 ========== */
.article-external-link {
  margin-top: 24px;
  padding: 16px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  text-align: center;
}

.article-external-link a {
  color: var(--primary);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
}

.article-external-link a:hover {
  text-decoration: underline;
}

/* ========== 下载专区样式 ========== */
.page-header {
  text-align: center;
  padding: 40px 0 30px;
}

.page-header h1 {
  font-size: 32px;
  margin-bottom: 10px;
  color: var(--primary);
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
}

.download-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  background: white;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
}

.download-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}

.download-card-icon {
  font-size: 40px;
  flex-shrink: 0;
}

.download-card-info {
  flex: 1;
  min-width: 0;
}

.download-card-title {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.download-card-category {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 4px;
}

.download-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 4px 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.download-card-size {
  font-size: 12px;
  color: var(--text-light);
}

.download-card-action {
  flex-shrink: 0;
  padding: 6px 16px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.loading-state, .empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-icon {
  font-size: 60px;
  margin-bottom: 20px;
}

.empty-state h3 {
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.error-tip {
  text-align: center;
  color: var(--error);
  padding: 40px;
}

/* ========== 网站导航样式 ========== */
.footer-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.footer-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s;
}

.footer-nav-link:hover {
  background: var(--primary);
  color: white;
}

.footer-nav-link .nav-icon {
  font-size: 14px;
}

/* ========== 首页网站导航样式 ========== */
.home-nav-download-section {
  padding: 24px 0;
  background: white;
}

.nav-download-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.home-nav-section,
.home-download-section {
  padding: 0;
  background: transparent;
}

.home-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.home-nav-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  border: 1px solid transparent;
}

.home-nav-item:hover {
  background: white;
  border-color: var(--primary-light);
  transform: translateX(2px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.home-nav-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.home-nav-name {
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* ========== 首页下载专区样式 ========== */
.home-download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.home-download-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  border: 1px solid transparent;
}

.home-download-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.home-download-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.home-download-info {
  flex: 1;
  min-width: 0;
}

.home-download-name {
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 4px;
}

.home-download-cat {
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-light);
  display: inline-block;
  padding: 1px 6px;
  border-radius: 8px;
  margin-bottom: 2px;
}

.home-download-size {
  font-size: 12px;
  color: var(--text-light);
}

.home-download-btn {
  flex-shrink: 0;
  padding: 6px 14px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 13px;
  white-space: nowrap;
}

/* 响应式 */
@media (max-width: 768px) {
  .nav-download-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .home-nav-download-section {
    padding: 24px 0;
  }
}

@media (max-width: 480px) {
  .home-nav-icon {
    font-size: 18px;
  }
  .home-nav-name {
    font-size: 13px;
  }
}