:root {
    --color-dark: #616161;
    --color-green: #8aae92;
    --color-light-green: #c4e3cb;
    --color-bg: #f4f9f4;
    --color-white: #ffffff;
    --color-border: #e8efe8;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-lighter: #888888;
    --color-accent: #6b9b7a;
    --color-star: #e8a850;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --max-width: 1320px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.top-nav { width: 100%; background: var(--color-white); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 1000; box-shadow: var(--shadow-sm); height: 64px; display: flex; align-items: center; }
.top-nav-inner { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 100%; }
.nav-brand h1 { font-size: 1.6rem; font-weight: 700; color: var(--color-accent); margin: 0; letter-spacing: 1px; white-space: nowrap; cursor: pointer; transition: var(--transition); }
.nav-brand h1:hover { color: var(--color-green); }
.nav-brand { text-decoration: none; display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.nav-brand .logo-icon { width: 36px; height: 36px; border-radius: 8px; background: linear-gradient(135deg, var(--color-green), var(--color-accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 1.1rem; flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; flex-wrap: wrap; justify-content: center; }
.nav-links a { text-decoration: none; color: var(--color-dark); font-size: 0.9rem; font-weight: 500; padding: 8px 14px; border-radius: 20px; transition: var(--transition); white-space: nowrap; letter-spacing: 0.3px; }
.nav-links a:hover, .nav-links a:focus { background: var(--color-light-green); color: var(--color-accent); outline: none; }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-nav { display: inline-flex; align-items: center; gap: 6px; padding: 10px 20px; border-radius: 24px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: var(--transition); text-decoration: none; white-space: nowrap; letter-spacing: 0.5px; border: 2px solid transparent; }
.btn-primary-nav { background: var(--color-green); color: #fff; border-color: var(--color-green); }
.btn-primary-nav:hover { background: var(--color-accent); border-color: var(--color-accent); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline-nav { background: transparent; color: var(--color-dark); border-color: var(--color-light-green); }
.btn-outline-nav:hover { background: var(--color-light-green); color: var(--color-accent); border-color: var(--color-green); }
.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; flex-shrink: 0; }
.mobile-menu-toggle span { display: block; width: 24px; height: 2.5px; background: var(--color-dark); margin: 5px 0; border-radius: 3px; transition: var(--transition); }

.main-container { max-width: var(--max-width); margin: 0 auto; padding: 24px 24px 40px; display: flex; gap: 28px; min-height: 60vh; }
.main-content { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 32px; }
.sidebar { width: 370px; flex-shrink: 0; display: flex; flex-direction: column; gap: 20px; position: sticky; top: 88px; align-self: flex-start; max-height: calc(100vh - 110px); overflow-y: auto; padding-right: 4px; scrollbar-width: thin; scrollbar-color: var(--color-light-green) transparent; }
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--color-light-green); border-radius: 4px; }

.section-card { background: var(--color-white); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid transparent; }
.section-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-light-green); }
.section-title { font-size: 1.3rem; font-weight: 700; color: var(--color-dark); margin-bottom: 18px; padding-bottom: 12px; border-bottom: 3px solid var(--color-light-green); display: flex; align-items: center; gap: 10px; letter-spacing: 0.5px; }
.section-title .title-icon-bar { width: 5px; height: 22px; background: var(--color-green); border-radius: 3px; flex-shrink: 0; }
.sidebar .section-title { font-size: 1.1rem; margin-bottom: 14px; padding-bottom: 10px; }

/* ========== 热门漫画优化：高度缩小，更紧凑 ========== */
.comic-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.comic-card { background: var(--color-white); border-radius: var(--radius); overflow: hidden; transition: var(--transition); cursor: pointer; border: 1px solid var(--color-border); display: flex; flex-direction: column; height: 100%; }
.comic-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-green); }
.comic-card-img-wrap { position: relative; width: 100%; aspect-ratio: 1 / 1; /* 改为正方形，明显降低卡片高度 */ overflow: hidden; background: var(--color-light-green); flex-shrink: 0; }
.comic-card-img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.comic-card:hover .comic-card-img-wrap img { transform: scale(1.06); }
.comic-card-badge { position: absolute; top: 8px; left: 8px; background: var(--color-green); color: #fff; font-size: 0.7rem; font-weight: 700; padding: 3px 10px; border-radius: 12px; letter-spacing: 0.5px; z-index: 2; }
.comic-card-badge.hot { background: #e8734a; }
.comic-card-info { padding: 10px 12px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.comic-card-title { font-size: 0.9rem; font-weight: 700; color: var(--color-dark); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.comic-card-meta { font-size: 0.72rem; color: var(--color-text-lighter); display: flex; flex-wrap: wrap; gap: 4px 8px; line-height: 1.3; }
.comic-card-meta span { white-space: nowrap; }
.comic-card-type { display: inline-block; font-size: 0.68rem; background: var(--color-light-green); color: var(--color-accent); padding: 2px 8px; border-radius: 10px; font-weight: 500; white-space: nowrap; margin-top: 2px; }

.featured-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.featured-item { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; cursor: pointer; transition: var(--transition); background: var(--color-light-green); }
.featured-item img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.5s ease; }
.featured-item:hover img { transform: scale(1.08); }
.featured-item:hover { box-shadow: var(--shadow-lg); }
.featured-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 20px 16px 14px; background: linear-gradient(transparent, rgba(0, 0, 0, 0.78)); color: #fff; z-index: 2; }
.featured-overlay h3 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.featured-overlay p { font-size: 0.78rem; opacity: 0.9; margin: 0; }

.character-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.character-card { text-align: center; background: var(--color-bg); border-radius: var(--radius); padding: 18px 12px; transition: var(--transition); border: 1px solid transparent; cursor: pointer; }
.character-card:hover { background: #fff; box-shadow: var(--shadow-md); border-color: var(--color-light-green); transform: translateY(-3px); }
.character-card img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; margin: 0 auto 10px; display: block; border: 3px solid var(--color-light-green); transition: var(--transition); }
.character-card:hover img { border-color: var(--color-green); }
.character-card .char-name { font-weight: 700; font-size: 0.9rem; color: var(--color-dark); }
.character-card .char-role { font-size: 0.75rem; color: var(--color-text-lighter); margin-top: 2px; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; transition: var(--transition); background: var(--color-bg); }
.faq-item:hover { border-color: var(--color-light-green); background: #fff; }
.faq-question { padding: 14px 18px; font-weight: 600; font-size: 0.95rem; color: var(--color-dark); cursor: pointer; display: flex; justify-content: space-between; align-items: center; user-select: none; letter-spacing: 0.3px; }
.faq-question .faq-arrow { font-size: 0.7rem; color: var(--color-green); transition: var(--transition); flex-shrink: 0; }
.faq-answer { padding: 0 18px 16px; font-size: 0.85rem; color: var(--color-text-light); line-height: 1.7; display: none; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-item.open { border-color: var(--color-green); background: #fff; box-shadow: var(--shadow-sm); }

.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.advantage-item { text-align: center; padding: 20px 14px; background: var(--color-bg); border-radius: var(--radius); transition: var(--transition); border: 1px solid transparent; }
.advantage-item:hover { background: #fff; box-shadow: var(--shadow-md); border-color: var(--color-light-green); transform: translateY(-2px); }
.advantage-icon-circle { width: 50px; height: 50px; border-radius: 50%; background: var(--color-light-green); margin: 0 auto 10px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; color: var(--color-accent); font-weight: 700; transition: var(--transition); }
.advantage-item:hover .advantage-icon-circle { background: var(--color-green); color: #fff; }
.advantage-item h4 { font-size: 0.9rem; font-weight: 700; color: var(--color-dark); margin-bottom: 4px; }
.advantage-item p { font-size: 0.75rem; color: var(--color-text-lighter); margin: 0; line-height: 1.4; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item { padding: 8px 18px; background: var(--color-light-green); color: var(--color-accent); border-radius: 22px; font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: var(--transition); border: 1.5px solid transparent; letter-spacing: 0.3px; }
.tag-item:hover { background: var(--color-green); color: #fff; border-color: var(--color-green); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

.rank-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.rank-item { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--radius-sm); transition: var(--transition); cursor: pointer; background: var(--color-bg); border: 1px solid transparent; }
.rank-item:hover { background: #fff; box-shadow: var(--shadow-sm); border-color: var(--color-light-green); }
.rank-num { font-weight: 800; font-size: 1.1rem; color: var(--color-text-lighter); width: 28px; text-align: center; flex-shrink: 0; }
.rank-item.top1 .rank-num, .rank-item.top2 .rank-num, .rank-item.top3 .rank-num { color: var(--color-star); font-size: 1.3rem; }
.rank-item img { width: 44px; height: 60px; object-fit: cover; border-radius: 4px; flex-shrink: 0; background: var(--color-light-green); }
.rank-info { flex: 1; min-width: 0; }
.rank-info .rank-title { font-weight: 600; font-size: 0.85rem; color: var(--color-dark); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.rank-info .rank-meta { font-size: 0.7rem; color: var(--color-text-lighter); margin-top: 2px; }
.rank-change { font-weight: 700; font-size: 0.8rem; flex-shrink: 0; }
.rank-change.up { color: #d44; }
.rank-change.stable { color: var(--color-text-lighter); }

.stats-mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; text-align: center; }
.stats-mini-item { background: var(--color-bg); border-radius: var(--radius-sm); padding: 14px 8px; transition: var(--transition); border: 1px solid transparent; }
.stats-mini-item:hover { background: #fff; border-color: var(--color-light-green); }
.stats-mini-item .stat-val { font-size: 1.4rem; font-weight: 800; color: var(--color-accent); line-height: 1; }
.stats-mini-item .stat-label { font-size: 0.7rem; color: var(--color-text-lighter); margin-top: 4px; }

.total-read-card { text-align: center; background: linear-gradient(135deg, var(--color-light-green), #e8f5e9); border-radius: var(--radius); padding: 18px; }
.total-read-card .big-number { font-size: 2rem; font-weight: 800; color: var(--color-accent); letter-spacing: 1px; }
.total-read-card .update-time { font-size: 0.7rem; color: var(--color-text-lighter); margin-top: 4px; }

.comment-list { display: flex; flex-direction: column; gap: 12px; max-height: 600px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--color-light-green) transparent; }
.comment-list::-webkit-scrollbar { width: 3px; }
.comment-list::-webkit-scrollbar-track { background: transparent; }
.comment-list::-webkit-scrollbar-thumb { background: var(--color-light-green); border-radius: 3px; }
.comment-item { padding: 12px 14px; background: var(--color-bg); border-radius: var(--radius-sm); transition: var(--transition); border: 1px solid transparent; font-size: 0.82rem; line-height: 1.65; color: var(--color-text-light); }
.comment-item:hover { background: #fff; border-color: var(--color-light-green); box-shadow: var(--shadow-sm); }
.comment-item .comment-user { font-weight: 700; font-size: 0.8rem; color: var(--color-dark); margin-bottom: 4px; }
.comment-item .comment-time { font-size: 0.7rem; color: var(--color-text-lighter); float: right; }

.download-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.download-card { display: flex; align-items: center; gap: 12px; padding: 16px 18px; background: var(--color-bg); border-radius: var(--radius); cursor: pointer; transition: var(--transition); text-decoration: none; color: inherit; border: 2px solid transparent; }
.download-card:hover { background: #fff; box-shadow: var(--shadow-md); border-color: var(--color-green); transform: translateY(-3px); }
.download-card .app-icon { width: 44px; height: 44px; flex-shrink: 0; object-fit: contain; }
.download-card .dl-info h4 { font-size: 0.9rem; font-weight: 700; color: var(--color-dark); margin: 0; }
.download-card .dl-info span { font-size: 0.72rem; color: var(--color-text-lighter); }

.bottom-footer { width: 100%; background: var(--color-dark); color: #ddd; padding: 32px 24px 20px; margin-top: 20px; }
.bottom-footer-inner { max-width: var(--max-width); margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 10px; font-weight: 600; }
.footer-col a { display: block; color: #bbb; text-decoration: none; font-size: 0.8rem; padding: 3px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--color-light-green); }
.footer-bottom-bar { max-width: var(--max-width); margin: 20px auto 0; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, 0.15); text-align: center; font-size: 0.75rem; color: #999; display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.footer-bottom-bar a { color: #bbb; text-decoration: none; transition: var(--transition); }
.footer-bottom-bar a:hover { color: var(--color-light-green); }

/* ========== 响应式设计 ========== */
@media (max-width: 1200px) {
    .comic-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .sidebar { width: 320px; }
    .character-grid { grid-template-columns: repeat(3, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .download-grid { grid-template-columns: repeat(2, 1fr); }
    .featured-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .main-container { flex-direction: column; padding: 16px; gap: 20px; }
    .sidebar { width: 100%; position: static; max-height: none; overflow-y: visible; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .sidebar .section-card { break-inside: avoid; }
    .sidebar .comment-list { max-height: 400px; }
    .comic-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .character-grid { grid-template-columns: repeat(3, 1fr); }
    .nav-links { display: none; }
    .mobile-menu-toggle { display: block; }
    .nav-links.mobile-open { display: flex; position: absolute; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 12px 20px; box-shadow: var(--shadow-lg); z-index: 999; gap: 2px; }
    .nav-links.mobile-open a { padding: 10px 16px; border-radius: 8px; width: 100%; }
    .featured-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .sidebar { grid-template-columns: 1fr; gap: 12px; }
    .character-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .advantages-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
    .download-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
    .stats-mini-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .featured-row { grid-template-columns: 1fr; }
    .top-nav-inner { padding: 0 12px; gap: 8px; }
    .nav-brand h1 { font-size: 1.2rem; }
    .btn-nav { padding: 8px 14px; font-size: 0.78rem; }
    .section-title { font-size: 1.1rem; }
    .section-card { padding: 16px; }
    .comic-card-info { padding: 8px 10px; }
    .comic-card-title { font-size: 0.82rem; }
    .bottom-footer-inner { flex-direction: column; gap: 16px; }
}
@media (max-width: 380px) {
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
    .download-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
    .stats-mini-grid { gap: 4px; }
    .stats-mini-item .stat-val { font-size: 1.1rem; }
}