:root {
    --color-deep-blue: #264e86;
    --color-bright-blue: #0074e4;
    --color-cyan: #74dbef;
    --color-light-bg: #eff0f4;
    --color-white: #ffffff;
    --color-dark: #1a1a2e;
    --color-text: #2c3e50;
    --color-text-light: #5a6c7d;
    --color-border: #e0e4ea;
    --color-star: #f5a623;
    --color-red: #e74c3c;
    --color-green: #27ae60;
    --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 32px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --max-width: 1320px;
    --sidebar-width: 370px;
    --nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height) + 20px);
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background-color: var(--color-light-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.top-nav {
    width: 100%;
    height: var(--nav-height);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    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;
    height: 100%;
    gap: 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-deep-blue);
    letter-spacing: 1px;
    white-space: nowrap;
    margin: 0;
    line-height: 1;
}

.nav-brand .brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-deep-blue), var(--color-bright-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-brand .brand-icon svg {
    width: 22px;
    height: 22px;
    fill: #fff;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    list-style: none;
    flex-shrink: 1;
    justify-content: center;
}

.nav-links a {
    display: inline-block;
    padding: 8px 14px;
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 20px;
    transition: all var(--transition-fast);
    white-space: nowrap;
    letter-spacing: 0.3px;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--color-bright-blue);
    background: rgba(0, 116, 228, 0.06);
    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: 9px 18px;
    border-radius: 22px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-fast);
    border: none;
    letter-spacing: 0.3px;
}

.btn-login {
    background: transparent;
    color: var(--color-deep-blue);
    border: 1.5px solid var(--color-deep-blue);
}
.btn-login:hover {
    background: var(--color-deep-blue);
    color: #fff;
}

.btn-read {
    background: var(--color-bright-blue);
    color: #fff;
    box-shadow: 0 2px 10px rgba(0, 116, 228, 0.3);
}
.btn-read:hover {
    background: #005bbf;
    box-shadow: 0 4px 18px rgba(0, 116, 228, 0.4);
    transform: translateY(-1px);
}

.hamburger-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}
.hamburger-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-deep-blue);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.main-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 20px 40px;
    display: flex;
    gap: 28px;
    align-items: flex-start;
}

.content-primary {
    flex: 1;
    min-width: 0;
}

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
    position: sticky;
    top: calc(var(--nav-height) + 20px);
    max-height: calc(100vh - var(--nav-height) - 40px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #c0c7d0 transparent;
}
.sidebar::-webkit-scrollbar {
    width: 5px;
}
.sidebar::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar::-webkit-scrollbar-thumb {
    background: #c0c7d0;
    border-radius: 10px;
}

.section-block {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
    border: 1px solid transparent;
}
.section-block:hover {
    box-shadow: var(--shadow-md);
    border-color: #e8ecf1;
}

.section-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-deep-blue);
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-cyan);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
}
.section-title::before {
    content: '';
    width: 5px;
    height: 26px;
    background: var(--color-bright-blue);
    border-radius: 3px;
    flex-shrink: 0;
}

.sidebar .section-title {
    font-size: 1.15rem;
    margin-bottom: 14px;
    padding-bottom: 10px;
}
.sidebar .section-title::before {
    height: 20px;
    width: 4px;
}
.sidebar .section-block {
    padding: 20px 16px;
    border-radius: var(--radius-md);
}

.comic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 18px;
}

.comic-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 1px solid #eef1f5;
    display: flex;
    flex-direction: column;
}
.comic-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-cyan);
}

.comic-card .card-img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 2/3;
    overflow: hidden;
    background: #e8ecf1;
    flex-shrink: 0;
}
.comic-card .card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-normal);
}
.comic-card:hover .card-img-wrap img {
    transform: scale(1.06);
}
.comic-card .card-type-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--color-bright-blue);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    z-index: 2;
    letter-spacing: 0.5px;
    pointer-events: none;
}
.comic-card .card-info {
    padding: 12px 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}
.comic-card .card-title {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--color-dark);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.comic-card .card-meta {
    font-size: 0.72rem;
    color: var(--color-text-light);
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.4;
}
.comic-card .card-meta span {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.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: background var(--transition-fast);
    cursor: pointer;
}
.rank-list li:hover {
    background: #f5f7fa;
}
.rank-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #fff;
    letter-spacing: 0;
}
.rank-num.top1 {
    background: #e74c3c;
}
.rank-num.top2 {
    background: #f5a623;
}
.rank-num.top3 {
    background: #f7b84e;
}
.rank-num.normal {
    background: #aab5c0;
}
.rank-info {
    flex: 1;
    min-width: 0;
}
.rank-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-author {
    font-size: 0.7rem;
    color: var(--color-text-light);
}
.rank-heat {
    font-size: 0.72rem;
    color: var(--color-bright-blue);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.rise-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.rise-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    cursor: pointer;
}
.rise-list li:hover {
    background: #f5f7fa;
}
.rise-badge {
    background: #e8f5e9;
    color: #27ae60;
    font-weight: 700;
    font-size: 0.7rem;
    padding: 3px 8px;
    border-radius: 10px;
    white-space: nowrap;
    flex-shrink: 0;
}
.rise-name {
    flex: 1;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rise-arrow {
    color: #27ae60;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.total-read-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--color-deep-blue);
    letter-spacing: 1px;
    line-height: 1;
}
.total-read-label {
    font-size: 0.82rem;
    color: var(--color-text-light);
    margin-top: 4px;
}
.total-read-time {
    font-size: 0.7rem;
    color: #999;
    margin-top: 2px;
}

.stats-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.stat-item {
    flex: 1;
    min-width: 70px;
    text-align: center;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    padding: 14px 8px;
    border: 1px solid #eef1f5;
}
.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-bright-blue);
    line-height: 1;
}
.stat-label {
    font-size: 0.7rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

.comment-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: 600px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #c0c7d0 transparent;
}
.comment-list::-webkit-scrollbar {
    width: 4px;
}
.comment-list::-webkit-scrollbar-thumb {
    background: #c0c7d0;
    border-radius: 8px;
}
.comment-item {
    padding: 12px 14px;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-cyan);
    font-size: 0.82rem;
    color: #444;
    line-height: 1.6;
    transition: background var(--transition-fast);
}
.comment-item:hover {
    background: #f0f4f8;
}
.comment-user {
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--color-deep-blue);
    margin-bottom: 4px;
}
.comment-text {
    color: #555;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.tag-item {
    display: inline-block;
    padding: 8px 16px;
    background: #f0f6fc;
    color: var(--color-deep-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    cursor: pointer;
    letter-spacing: 0.3px;
}
.tag-item:hover {
    background: var(--color-bright-blue);
    color: #fff;
    border-color: var(--color-bright-blue);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.advantage-card {
    text-align: center;
    padding: 20px 14px;
    background: #f8fafc;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}
.advantage-card:hover {
    background: #fff;
    border-color: var(--color-cyan);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.advantage-icon-wrap {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e8f4fd, #d0eafc);
}
.advantage-icon-wrap svg {
    width: 26px;
    height: 26px;
}
.advantage-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.advantage-desc {
    font-size: 0.78rem;
    color: var(--color-text-light);
    line-height: 1.4;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.download-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 14px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition-normal);
    border: 1.5px solid #e8ecf1;
    background: #fff;
    cursor: pointer;
    color: var(--color-dark);
    letter-spacing: 0.3px;
}
.download-card:hover {
    border-color: var(--color-bright-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.download-card .app-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    object-fit: contain;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.faq-item {
    border: 1px solid #eef1f5;
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
}
.faq-item summary {
    padding: 14px 18px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--color-dark);
    background: #fafbfc;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition-fast);
    letter-spacing: 0.3px;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--color-bright-blue);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: 8px;
}
.faq-item[open] summary::after {
    content: '-';
    transform: rotate(180deg);
}
.faq-item[open] summary {
    background: #eef5fb;
    color: var(--color-deep-blue);
}
.faq-answer {
    padding: 14px 18px;
    font-size: 0.85rem;
    color: #555;
    line-height: 1.6;
    background: #fff;
}

.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}
.character-card {
    text-align: center;
    background: #fafbfc;
    border-radius: var(--radius-md);
    padding: 16px 12px;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    cursor: pointer;
}
.character-card:hover {
    border-color: var(--color-cyan);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.character-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 10px;
    border: 3px solid var(--color-cyan);
    display: block;
}
.character-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-dark);
}
.character-role-tag {
    font-size: 0.7rem;
    color: var(--color-bright-blue);
    font-weight: 500;
    margin-top: 2px;
}
.character-desc {
    font-size: 0.73rem;
    color: var(--color-text-light);
    margin-top: 4px;
    line-height: 1.4;
}

.footer-nav {
    width: 100%;
    background: var(--color-deep-blue);
    color: #c5d4e8;
    padding: 36px 20px 20px;
    margin-top: 40px;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: space-between;
}
.footer-col h3 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}
.footer-col a {
    display: block;
    color: #b0c5dd;
    text-decoration: none;
    font-size: 0.82rem;
    padding: 4px 0;
    transition: color var(--transition-fast);
    letter-spacing: 0.3px;
}
.footer-col a:hover {
    color: var(--color-cyan);
}
.footer-bottom {
    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: #889db5;
    letter-spacing: 0.3px;
}
.footer-bottom a {
    color: #b0c5dd;
    text-decoration: none;
    margin: 0 8px;
    transition: color var(--transition-fast);
}
.footer-bottom a:hover {
    color: var(--color-cyan);
}

@media (max-width: 1200px) {
    .comic-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .sidebar { width: 320px; }
    .download-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}

@media (max-width: 1024px) {
    .main-container { flex-direction: column; gap: 22px; padding: 16px 14px 30px; }
    .sidebar { width: 100%; position: static; max-height: none; overflow-y: visible; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .sidebar .section-block.comments-sidebar { grid-column: 1 / -1; }
    .comic-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .nav-links a { padding: 6px 10px; font-size: 0.8rem; }
}

@media (max-width: 768px) {
    .top-nav-inner { padding: 0 14px; gap: 10px; }
    .nav-brand h1 { font-size: 1.2rem; }
    .nav-brand .brand-icon { width: 30px; height: 30px; border-radius: 8px; }
    .nav-links { display: none; position: absolute; top: var(--nav-height); left: 0; width: 100%; background: #fff; flex-direction: column; padding: 12px 20px; box-shadow: var(--shadow-md); gap: 4px; z-index: 999; border-bottom: 2px solid var(--color-cyan); }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 10px 14px; width: 100%; border-radius: 8px; font-size: 0.9rem; }
    .hamburger-toggle { display: flex; }
    .btn-nav { padding: 7px 12px; font-size: 0.78rem; }
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .sidebar { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .character-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stats-row { gap: 6px; }
    .stat-item { padding: 10px 6px; }
    .stat-value { font-size: 1.1rem; }
    .total-read-number { font-size: 1.8rem; }
    .section-block { padding: 18px 14px; }
    .section-title { font-size: 1.15rem; }
    .footer-inner { flex-direction: column; gap: 20px; }
}

@media (max-width: 480px) {
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .comic-card .card-info { padding: 8px 6px 10px; }
    .comic-card .card-title { font-size: 0.78rem; }
    .comic-card .card-meta { font-size: 0.65rem; }
    .download-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
    .btn-nav { padding: 6px 10px; font-size: 0.72rem; }
    .nav-brand h1 { font-size: 1rem; }
    .section-title { font-size: 1.05rem; }
    .advantages-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
}