:root {
    --color-primary: #0245a3;
    --color-secondary: #8fbaf3;
    --color-accent: #bdf1f6;
    --color-bg: #f2fcfc;
    --color-white: #ffffff;
    --color-dark: #1a1a2e;
    --color-text: #2c3e50;
    --color-text-light: #5a6c7d;
    --color-border: #dce8f0;
    --color-star: #f5a623;
    --color-green: #27ae60;
    --color-orange: #e67e22;
    --color-red: #e74c3c;
    --shadow-sm: 0 1px 3px rgba(2, 69, 163, 0.06);
    --shadow-md: 0 4px 16px rgba(2, 69, 163, 0.10);
    --shadow-lg: 0 8px 32px rgba(2, 69, 163, 0.14);
    --shadow-xl: 0 12px 40px rgba(2, 69, 163, 0.18);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1320px;
    --nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-stack);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.site-header {
    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: var(--nav-height);
    display: flex;
    align-items: center;
}
.header-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%;
}
.site-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    text-decoration: none;
}
.site-brand .brand-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}
.site-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
    margin: 0;
    line-height: 1;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    list-style: none;
    flex-shrink: 0;
}
.main-nav li a {
    display: inline-block;
    padding: 8px 14px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 20px;
    transition: var(--transition);
    white-space: nowrap;
    letter-spacing: 0.3px;
}
.main-nav li a:hover,
.main-nav li a:focus-visible {
    background: var(--color-accent);
    color: var(--color-primary);
    outline: none;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.btn-login {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 22px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    letter-spacing: 0.4px;
    box-shadow: 0 2px 8px rgba(2, 69, 163, 0.25);
}
.btn-login:hover {
    background: #013a8a;
    box-shadow: 0 4px 14px rgba(2, 69, 163, 0.35);
    transform: translateY(-1px);
}
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-shrink: 0;
    color: var(--color-primary);
}
.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-primary);
    margin: 5px 0;
    border-radius: 2px;
    transition: var(--transition);
}

@media (max-width: 1024px) {
    .main-nav { gap: 2px; }
    .main-nav li a { padding: 6px 10px; font-size: 0.85rem; }
    .site-brand h1 { font-size: 1.25rem; }
}
@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        padding: 12px 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        border-bottom: 2px solid var(--color-accent);
        z-index: 999;
    }
    .main-nav.active { display: flex; }
    .main-nav li a { display: block; padding: 10px 16px; border-radius: var(--radius-sm); font-size: 0.95rem; }
    .mobile-menu-toggle { display: block; }
    .header-inner { padding: 0 16px; }
    .site-brand h1 { font-size: 1.15rem; }
    .site-brand .brand-icon { width: 32px; height: 32px; }
    .btn-login { padding: 7px 15px; font-size: 0.8rem; }
}

.page-wrapper {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.content-layout {
    display: flex;
    gap: 28px;
    padding: 24px 0;
}
.main-content { flex: 1; min-width: 0; }
.sidebar { width: 340px; flex-shrink: 0; display: flex; flex-direction: column; gap: 22px; }

@media (max-width: 1100px) { .sidebar { width: 300px; } .content-layout { gap: 20px; } }
@media (max-width: 900px) {
    .content-layout { flex-direction: column; gap: 24px; }
    .sidebar { width: 100%; flex-direction: column; gap: 20px; }
    .page-wrapper { padding: 0 16px; }
}

.section-block { margin-bottom: 32px; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.section-title {
    font-size: 1.35rem; font-weight: 700; color: var(--color-dark);
    position: relative; padding-left: 16px; letter-spacing: 0.4px; line-height: 1.3;
}
.section-title::before {
    content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 5px; height: 24px; background: var(--color-primary); border-radius: 3px;
}
.section-more { font-size: 0.88rem; color: var(--color-primary); text-decoration: none; font-weight: 500; transition: var(--transition); white-space: nowrap; }
.section-more:hover { color: #013a8a; text-decoration: underline; }

.comic-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
@media (max-width: 1200px) { .comic-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; } }
@media (max-width: 768px) { .comic-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; } }
@media (max-width: 480px) { .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; } }
.comic-card {
    background: var(--color-white); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-sm); transition: var(--transition); cursor: pointer;
    display: flex; flex-direction: column; border: 1px solid transparent; position: relative;
}
.comic-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-secondary); }
.comic-card .card-img-wrap { position: relative; width: 100%; aspect-ratio: 3 / 4; overflow: hidden; background: #eef4f8; }
.comic-card .card-img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.comic-card:hover .card-img-wrap img { transform: scale(1.06); }
.comic-card .card-body { padding: 10px 12px 14px; flex: 1; display: flex; flex-direction: column; gap: 4px; }
.comic-card .card-title {
    font-size: 0.95rem; font-weight: 700; color: var(--color-dark); line-height: 1.3;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; letter-spacing: 0.3px;
}
.comic-card .card-meta { font-size: 0.75rem; color: var(--color-text-light); display: flex; flex-wrap: wrap; gap: 4px 10px; line-height: 1.4; }
.comic-card .card-meta span { white-space: nowrap; }
.comic-card .card-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.comic-card .card-tags .tag {
    display: inline-block; font-size: 0.68rem; padding: 2px 8px; border-radius: 10px;
    background: var(--color-accent); color: var(--color-primary); font-weight: 500; letter-spacing: 0.2px;
}

.sidebar-card {
    background: var(--color-white); border-radius: var(--radius-lg); padding: 18px 16px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow-md); }
.sidebar-card .card-heading {
    font-size: 1.05rem; font-weight: 700; color: var(--color-dark); margin-bottom: 14px;
    padding-bottom: 10px; border-bottom: 2px solid var(--color-accent); letter-spacing: 0.3px;
    display: flex; align-items: center; gap: 8px;
}
.sidebar-card .card-heading .icon-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary); flex-shrink: 0; }
.rank-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.rank-list li { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm); transition: var(--transition); cursor: pointer; border: 1px solid transparent; }
.rank-list li:hover { background: #f8fbfe; border-color: var(--color-accent); }
.rank-num { width: 26px; height: 26px; border-radius: 50%; font-size: 0.78rem; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: #fff; letter-spacing: 0.3px; }
.rank-num.top1 { background: #e74c3c; }
.rank-num.top2 { background: #e67e22; }
.rank-num.top3 { background: #f39c12; }
.rank-num.normal { background: #8fbaf3; color: #0245a3; }
.rank-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.rank-info .rank-title { font-size: 0.85rem; font-weight: 600; color: var(--color-dark); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: 0.2px; }
.rank-info .rank-sub { font-size: 0.7rem; color: var(--color-text-light); }
.rank-cover { width: 40px; height: 52px; border-radius: 5px; object-fit: cover; flex-shrink: 0; background: #eef4f8; }

.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat-item { text-align: center; padding: 12px 6px; background: var(--color-bg); border-radius: var(--radius-sm); transition: var(--transition); }
.stat-item:hover { background: var(--color-accent); }
.stat-value { font-size: 1.3rem; font-weight: 700; color: var(--color-primary); letter-spacing: 0.3px; line-height: 1.2; }
.stat-label { font-size: 0.7rem; color: var(--color-text-light); margin-top: 2px; letter-spacing: 0.2px; }
.update-time { font-size: 0.7rem; color: #999; text-align: center; margin-top: 8px; letter-spacing: 0.2px; }

.advantages-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .advantages-row { grid-template-columns: repeat(2, 1fr); gap: 12px; } }
@media (max-width: 480px) { .advantages-row { grid-template-columns: 1fr 1fr; gap: 8px; } }
.advantage-item {
    background: var(--color-white); border-radius: var(--radius); padding: 20px 16px;
    text-align: center; box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); transition: var(--transition);
}
.advantage-item:hover { box-shadow: var(--shadow-md); border-color: var(--color-secondary); transform: translateY(-2px); }
.advantage-item .adv-icon-img { width: 48px; height: 48px; object-fit: contain; margin: 0 auto 10px; display: block; }
.advantage-item h4 { font-size: 0.95rem; font-weight: 700; color: var(--color-dark); margin-bottom: 4px; letter-spacing: 0.3px; }
.advantage-item p { font-size: 0.78rem; color: var(--color-text-light); line-height: 1.4; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud .cloud-tag {
    display: inline-block; padding: 6px 15px; background: var(--color-white);
    border: 1.5px solid var(--color-secondary); border-radius: 20px; font-size: 0.82rem;
    font-weight: 500; color: var(--color-primary); cursor: pointer; transition: var(--transition);
    letter-spacing: 0.3px; text-decoration: none;
}
.tag-cloud .cloud-tag:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); box-shadow: var(--shadow-md); }

.comic-detail-card {
    background: var(--color-white); border-radius: var(--radius-lg); padding: 22px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); display: flex; gap: 20px; flex-wrap: wrap;
}
.comic-detail-card .detail-cover { width: 180px; height: 250px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; background: #eef4f8; box-shadow: var(--shadow-md); }
.comic-detail-card .detail-info { flex: 1; min-width: 240px; }
.comic-detail-card .detail-info h3 { font-size: 1.3rem; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; letter-spacing: 0.4px; }
.comic-detail-card .detail-info .detail-meta-row { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 10px; }
.comic-detail-card .detail-info .detail-desc { font-size: 0.88rem; color: var(--color-text); line-height: 1.7; letter-spacing: 0.2px; }

.character-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 900px) { .character-row { grid-template-columns: repeat(2, 1fr); gap: 10px; } }
@media (max-width: 480px) { .character-row { grid-template-columns: 1fr 1fr; gap: 8px; } }
.character-card {
    background: var(--color-white); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); transition: var(--transition);
    text-align: center; padding-bottom: 12px;
}
.character-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-secondary); }
.character-card .char-img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; display: block; background: #eef4f8; }
.character-card .char-name { font-weight: 700; font-size: 0.9rem; color: var(--color-dark); margin-top: 10px; letter-spacing: 0.3px; }
.character-card .char-role { font-size: 0.73rem; color: var(--color-text-light); margin-top: 2px; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--color-white); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); transition: var(--transition); cursor: pointer; }
.faq-item:hover { border-color: var(--color-secondary); box-shadow: var(--shadow-md); }
.faq-item .faq-q { font-weight: 700; font-size: 0.9rem; color: var(--color-dark); letter-spacing: 0.3px; }
.faq-item .faq-a { font-size: 0.82rem; color: var(--color-text-light); margin-top: 6px; line-height: 1.5; letter-spacing: 0.2px; }

.download-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 900px) { .download-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } }
@media (max-width: 480px) { .download-grid { grid-template-columns: 1fr 1fr; gap: 8px; } }
.download-card {
    background: var(--color-white); border-radius: var(--radius); padding: 18px 14px;
    text-align: center; box-shadow: var(--shadow-sm); border: 1.5px solid var(--color-border);
    transition: var(--transition); text-decoration: none; cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.download-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-lg); transform: translateY(-3px); background: #fafeff; }
.download-card .app-icon { width: 44px; height: 44px; object-fit: contain; flex-shrink: 0; }
.download-card .dl-platform { font-weight: 700; font-size: 0.9rem; color: var(--color-dark); letter-spacing: 0.3px; }
.download-card .dl-sub { font-size: 0.72rem; color: var(--color-text-light); }

.comments-section {
    background: var(--color-white); border-radius: var(--radius-lg); padding: 22px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); margin-bottom: 32px;
}
.comments-section .comments-heading { font-size: 1.2rem; font-weight: 700; color: var(--color-dark); margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid var(--color-accent); letter-spacing: 0.4px; }
.comment-list { display: flex; flex-direction: column; gap: 14px; }
.comment-item { padding: 14px 16px; background: var(--color-bg); border-radius: var(--radius-sm); border-left: 3px solid var(--color-secondary); transition: var(--transition); }
.comment-item:hover { border-left-color: var(--color-primary); background: #f4fafc; }
.comment-item .comment-user { font-weight: 700; font-size: 0.85rem; color: var(--color-primary); letter-spacing: 0.3px; }
.comment-item .comment-text { font-size: 0.84rem; color: var(--color-text); margin-top: 4px; line-height: 1.6; letter-spacing: 0.2px; }
.comment-item .comment-time { font-size: 0.7rem; color: #aaa; margin-top: 6px; }

.platform-intro {
    background: var(--color-white); border-radius: var(--radius-lg); padding: 22px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); line-height: 1.8;
    font-size: 0.9rem; color: var(--color-text); letter-spacing: 0.25px;
}

.site-footer {
    width: 100%; background: var(--color-dark); color: #ccc; padding: 32px 24px 24px;
    margin-top: auto; letter-spacing: 0.3px;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: flex-start; }
.footer-col { min-width: 140px; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 10px; letter-spacing: 0.4px; }
.footer-col a { display: block; color: #aaa; text-decoration: none; font-size: 0.8rem; padding: 3px 0; transition: var(--transition); letter-spacing: 0.2px; }
.footer-col a:hover { color: var(--color-accent); text-decoration: underline; }
.footer-bottom {
    max-width: var(--max-width); margin: 20px auto 0; padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1); text-align: center;
    font-size: 0.75rem; color: #888; letter-spacing: 0.2px;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; align-items: center;
}
.footer-bottom a { color: var(--color-secondary); text-decoration: none; font-weight: 500; transition: var(--transition); }
.footer-bottom a:hover { color: #fff; text-decoration: underline; }

.back-to-top {
    position: fixed; bottom: 28px; right: 28px; width: 42px; height: 42px;
    border-radius: 50%; background: var(--color-primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    text-decoration: none; font-size: 1.2rem; font-weight: 700;
    box-shadow: var(--shadow-lg); transition: var(--transition); z-index: 900;
    opacity: 0.85; letter-spacing: 0; line-height: 1;
}
.back-to-top:hover { opacity: 1; transform: translateY(-3px); box-shadow: var(--shadow-xl); }

@media (max-width: 600px) { .footer-inner { flex-direction: column; gap: 18px; } .site-footer { padding: 24px 16px 18px; } }
@media (max-width: 480px) { .back-to-top { bottom: 16px; right: 16px; width: 36px; height: 36px; font-size: 1rem; } }

a:focus-visible, button:focus-visible { outline: 2.5px solid var(--color-primary); outline-offset: 3px; border-radius: 4px; }
@media print {
    .site-header, .site-footer, .sidebar, .back-to-top, .btn-login, .mobile-menu-toggle { display: none; }
    .content-layout { flex-direction: column; }
    body { background: #fff; }
}