/* ===================================
   场景学社 · 杂志风格主题
   主色调：橙红 #E65100 ~ #FF6D00（提取自松鼠Logo）
   =================================== */

/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #E65100;
  --primary-light: #FF6D00;
  --primary-pale: #FFF3E0;
  --opc-blue: #1565C0;
  --opc-blue-pale: #E3F2FD;
  --scene-green: #2E7D32;
  --scene-green-pale: #E8F5E9;
  --guanzi-red: #BF360C;
  --guanzi-red-pale: #FBE9E7;
  --activity-orange: #E65100;
  --text-primary: #1A1A1A;
  --text-secondary: #555555;
  --text-muted: #999999;
  --border: rgba(0,0,0,0.08);
  --border-hover: rgba(0,0,0,0.15);
  --bg-page: #FAFAFA;
  --bg-card: #FFFFFF;
  --bg-pale: #F5F5F5;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text-primary);
  background: var(--bg-page);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

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

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 0;
  max-width: 1100px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.site-logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.site-logo {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E65100, #FF6D00);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  overflow: hidden;
}

.site-logo img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }

.site-name { font-size: 16px; font-weight: 600; color: var(--text-primary); letter-spacing: 1px; }
.site-name-eng { font-size: 10px; color: var(--text-muted); letter-spacing: 0.5px; }

/* Nav */
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }

.nav-item {
  padding: 6px 14px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-item:hover, .nav-item.active {
  color: var(--primary);
  background: var(--primary-pale);
}

/* Search */
.header-search {
  display: flex;
  align-items: center;
  margin-left: 16px;
  flex-shrink: 0;
}

.search-input {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  width: 180px;
  background: var(--bg-pale);
  color: var(--text-primary);
  outline: none;
  transition: all 0.2s;
}

.search-input:focus {
  border-color: var(--primary);
  background: #fff;
  width: 220px;
}

.search-btn {
  margin-left: -32px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  padding: 4px 6px;
}

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

/* Mobile nav toggle */
.nav-toggle { display: none; cursor: pointer; padding: 6px; color: var(--text-primary); font-size: 20px; }

/* ===================================
   MAIN LAYOUT
   =================================== */
.main-wrap { padding: 32px 0 48px; }

.home-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

/* Hero card (featured) */
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}

.hero-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); transform: translateY(-2px); }

.hero-card-img {
  height: 180px;
  background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-card-img img { width: 100%; height: 100%; object-fit: cover; }

.hero-card-img-placeholder {
  width: 70px; height: 70px;
  border-radius: 12px;
  background: rgba(230,81,0,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: var(--primary); font-weight: 600;
  text-align: center; line-height: 1.4;
}

.hero-card-body { padding: 18px 20px 16px; }
.hero-card-cat {
  display: inline-block;
  padding: 3px 10px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 10px;
}
.hero-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 8px;
}
.hero-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.hero-card-meta {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text-muted);
}
.hero-card-meta .sq-icon {
  width: 20px; height: 20px; border-radius: 50%;
  background: linear-gradient(135deg, #E65100, #FF6D00);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 8px; font-weight: 600; flex-shrink: 0;
}

/* Side mini list */
.hero-side { display: flex; flex-direction: column; gap: 12px; }

.mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  cursor: pointer;
  transition: box-shadow 0.2s;
  display: flex; flex-direction: column; gap: 6px;
}

.mini-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.07); }

.mini-card-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.mini-card-cat.opc { color: var(--opc-blue); }
.mini-card-cat.guanzi { color: var(--guanzi-red); }
.mini-card-cat.scene { color: var(--scene-green); }
.mini-card-cat.activity { color: var(--activity-orange); }

.mini-card-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mini-card-date { font-size: 11px; color: var(--text-muted); }

/* Category tabs */
.cat-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cat-tab {
  padding: 6px 18px;
  font-size: 13px;
  border-radius: 20px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

.cat-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}

.article-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.09);
  transform: translateY(-2px);
}

.card-img {
  height: 148px;
  background: var(--primary-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

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

.card-img-placeholder {
  width: 60px; height: 60px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
  text-align: center; line-height: 1.4;
  color: #fff;
}

.card-img-placeholder.opc { background: var(--opc-blue); }
.card-img-placeholder.scene { background: var(--scene-green); }
.card-img-placeholder.guanzi { background: var(--guanzi-red); }
.card-img-placeholder.activity { background: var(--activity-orange); }

.card-body { padding: 14px 16px 16px; }

.card-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.card-cat.opc { color: var(--opc-blue); }
.card-cat.guanzi { color: var(--guanzi-red); }
.card-cat.scene { color: var(--scene-green); }
.card-cat.activity { color: var(--activity-orange); }

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-excerpt {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 11px;
  color: var(--text-muted);
}

.card-meta .sq-icon {
  width: 18px; height: 18px; border-radius: 50%;
  background: linear-gradient(135deg, #E65100, #FF6D00);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 7px; font-weight: 600; flex-shrink: 0;
  overflow: hidden;
}

.card-meta .sq-icon img { width: 100%; height: 100%; object-fit: cover; }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.pg-item {
  padding: 6px 13px;
  font-size: 13px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.pg-item:hover { color: var(--primary); }

.pg-item.current {
  background: var(--primary);
  color: #fff;
}

.pg-item.disabled { color: var(--text-muted); cursor: default; }

/* ===================================
   ARTICLE PAGE (POST)
   =================================== */
.post-page { max-width: 780px; margin: 0 auto; }

.post-header { padding: 32px 0 24px; }

.post-cat-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 16px;
}

.post-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}

.post-meta-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.post-meta-bar .sq-icon {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, #E65100, #FF6D00);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 9px; font-weight: 600; flex-shrink: 0;
  overflow: hidden;
}

.post-meta-bar .sq-icon img { width: 100%; height: 100%; object-fit: cover; }

.post-meta-item { display: flex; align-items: center; gap: 4px; }

.post-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-left: 8px; }

.post-tag {
  padding: 2px 10px;
  background: var(--bg-pale);
  color: var(--text-secondary);
  font-size: 11px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

/* Post cover image */
.post-cover {
  width: 100%;
  border-radius: var(--radius-lg);
  margin: 24px 0;
  overflow: hidden;
  max-height: 400px;
}

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

/* Post body */
.post-body {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.85;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.post-body h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 32px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.post-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
}

.post-body p { margin-bottom: 18px; }

.post-body ul, .post-body ol {
  margin: 0 0 18px 20px;
  list-style: disc;
}

.post-body ol { list-style: decimal; }

.post-body li { margin-bottom: 8px; }

.post-body a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(230,81,0,0.3);
}

.post-body a:hover { text-decoration-color: var(--primary); }

.post-body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  background: var(--primary-pale);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.post-body code {
  padding: 2px 6px;
  background: var(--bg-pale);
  border-radius: 4px;
  font-size: 13px;
  color: var(--primary);
  font-family: "Courier New", monospace;
}

.post-body pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 20px 0;
  font-size: 13px;
  line-height: 1.6;
}

.post-body pre code {
  background: none;
  color: inherit;
  padding: 0;
}

/* Resource download box */
.download-box {
  padding: 14px 18px;
  background: var(--bg-pale);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin: 20px 0;
  font-size: 13px;
}

.download-box a {
  color: var(--primary);
  font-weight: 600;
}

/* Share section */
.share-section {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 20px 0;
  margin: 8px 0;
  border-top: 1px solid var(--border);
}

.share-label { font-size: 13px; color: var(--text-secondary); }

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-size: 12px;
  border-radius: 20px;
  cursor: pointer;
  color: #fff;
  border: none;
  transition: opacity 0.2s;
  font-weight: 500;
}

.share-btn:hover { opacity: 0.85; }
.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.qq { background: #12B7F5; }
.share-btn.copy { background: var(--primary); }

/* Related articles */
.related-articles {
  margin: 32px 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.related-articles h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
}

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

.related-item {
  padding: 12px 16px;
  background: var(--bg-pale);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-item-cat { font-size: 11px; font-weight: 600; flex-shrink: 0; }
.related-item-title { font-size: 13px; color: var(--text-primary); font-weight: 500; }

/* ===================================
   ARCHIVE / TAG / CATEGORY PAGE
   =================================== */
.archive-header {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.archive-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.archive-count { font-size: 13px; color: var(--text-muted); }

/* ===================================
   ABOUT PAGE
   =================================== */
.about-page { max-width: 780px; margin: 0 auto; }

.about-page .post-body h2 {
  font-size: 18px;
  margin-top: 28px;
}

/* ===================================
   LINKS PAGE
   =================================== */
.links-page { max-width: 780px; margin: 0 auto; }

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.link-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.link-item:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 12px rgba(230,81,0,0.12);
  transform: translateY(-2px);
}

.link-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff;
}

.link-name { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.link-desc { font-size: 11px; color: var(--text-muted); }

/* ===================================
   SEARCH RESULTS
   =================================== */
.search-result-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.search-result-title { font-size: 15px; font-weight: 600; color: var(--primary); margin-bottom: 4px; }
.search-result-excerpt { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.search-result-meta { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ===================================
   FOOTER
   =================================== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 28px 0 20px;
  margin-top: 48px;
}

.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.footer-top {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.footer-brand { display: flex; align-items: center; gap: 10px; }

.footer-brand .sq-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, #E65100, #FF6D00);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 10px; font-weight: 600; flex-shrink: 0;
  overflow: hidden;
}

.footer-brand .sq-icon img { width: 100%; height: 100%; object-fit: cover; }

.footer-brand-name { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.footer-brand-eng { font-size: 11px; color: var(--text-muted); }

.footer-links-wrap { display: flex; gap: 40px; flex-wrap: wrap; }

.footer-link-group h4 { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.footer-link-group ul { display: flex; flex-direction: column; gap: 6px; }
.footer-link-group a { font-size: 13px; color: var(--text-secondary); }
.footer-link-group a:hover { color: var(--primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-beian { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.footer-beian img { width: 18px; height: 18px; display: inline-block; flex-shrink: 0; }
.footer-beian a { color: var(--text-muted); display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.footer-beian a:hover { color: var(--primary); }

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
  .header-search { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 10px 20px 16px;
    gap: 2px;
  }
  .site-nav.open { display: flex; }
  .nav-item { padding: 10px 14px; border-radius: var(--radius-sm); }
  .home-hero { grid-template-columns: 1fr; }
  .hero-side { display: none; }
  .article-grid { grid-template-columns: 1fr; }
  .post-title { font-size: 20px; }
  .footer-top { gap: 24px; }
  .footer-links-wrap { gap: 20px; }
}

@media (max-width: 480px) {
  .article-grid { grid-template-columns: 1fr; gap: 14px; }
  .card-img { height: 130px; }
  .links-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
}