:root {
    --bg-light: #eeeeee;
    --primary: #0092ca;
    --dark-gray: #393e46;
    --darkest: #222831;
    --white: #ffffff;
    --border: #e0e0e0;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 6px 24px rgba(0, 0, 0, 0.12);
    --radius: 10px;
    --radius-sm: 6px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 15px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--darkest);
    line-height: 1.6;
    min-width: 320px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.top-nav {
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}
.top-nav-inner {
    max-width: 1360px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 62px;
    gap: 20px;
}
.top-nav .site-name h1 {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--darkest);
    letter-spacing: 0.5px;
    white-space: nowrap;
    margin: 0;
    line-height: 1;
}
.top-nav .site-name h1 span {
    color: var(--primary);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.92rem;
    transition: var(--transition);
    white-space: nowrap;
    letter-spacing: 0.3px;
}
.nav-links a:hover,
.nav-links a:focus {
    background: #e8f6fb;
    color: var(--primary);
    outline: none;
}
.btn-nav-action {
    background: var(--primary);
    color: #fff !important;
    font-weight: 600 !important;
    padding: 9px 20px !important;
    border-radius: 22px !important;
    letter-spacing: 0.4px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.9rem !important;
}
.btn-nav-action:hover {
    background: #007ba8 !important;
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 146, 202, 0.35);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--darkest);
    border-radius: 3px;
    transition: var(--transition);
}
.nav-links-mobile {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    padding: 12px 20px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    border-bottom: 2px solid var(--border);
    z-index: 999;
    list-style: none;
}
.nav-links-mobile.open {
    display: flex;
}
.nav-links-mobile a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}
.nav-links-mobile a:hover {
    background: #e8f6fb;
    color: var(--primary);
}

.main-container {
    max-width: 1360px;
    margin: 0 auto;
    display: flex;
    gap: 28px;
    padding: 28px 24px;
    align-items: flex-start;
}
.content-left {
    flex: 1 1 68%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sidebar-right {
    flex: 0 0 340px;
    width: 340px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    position: sticky;
    top: 90px;
    align-self: flex-start;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
    scrollbar-color: #ccc transparent;
}
.sidebar-right::-webkit-scrollbar {
    width: 5px;
}
.sidebar-right::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 10px;
}
.sidebar-right::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 10px;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}
.card:hover {
    box-shadow: var(--shadow-lg);
}
.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--darkest);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
    letter-spacing: 0.5px;
}
.card-title-wrapper {
    border-bottom: 1px solid var(--border);
    margin-bottom: 18px;
}

.comic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}
.comic-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    box-shadow: var(--shadow);
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
}
.comic-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: #d0eef8;
}
.comic-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
    background: #e8e8e8;
    flex-shrink: 0;
}
.comic-card-body {
    padding: 11px 13px 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.comic-card-body .comic-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--darkest);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.comic-card-body .comic-meta {
    font-size: 0.75rem;
    color: #777;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.comic-card-body .comic-type-tag {
    display: inline-block;
    background: #e8f6fb;
    color: var(--primary);
    font-size: 0.7rem;
    padding: 3px 9px;
    border-radius: 12px;
    font-weight: 600;
    white-space: nowrap;
    align-self: flex-start;
    margin-top: 2px;
    letter-spacing: 0.3px;
}

.sidebar-right .card {
    padding: 16px 18px;
}
.sidebar-right .card-title {
    font-size: 1.05rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
}
.rank-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.rank-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}
.rank-list li:hover {
    background: #f9fdfe;
    border-color: #e0f0f6;
}
.rank-num {
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--primary);
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}
.rank-num.top1 {
    color: #e74c3c;
    font-size: 1.3rem;
}
.rank-num.top2 {
    color: #e67e22;
    font-size: 1.2rem;
}
.rank-num.top3 {
    color: #f39c12;
    font-size: 1.15rem;
}
.rank-info {
    flex: 1;
    min-width: 0;
}
.rank-info .rank-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--darkest);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-info .rank-detail {
    font-size: 0.72rem;
    color: #999;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-change {
    font-weight: 700;
    font-size: 0.82rem;
    flex-shrink: 0;
}
.rank-change.up {
    color: #e74c3c;
}
.rank-change.down {
    color: #27ae60;
}

.stat-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.stat-item {
    flex: 1;
    min-width: 70px;
    text-align: center;
    background: #f8fafb;
    border-radius: var(--radius-sm);
    padding: 14px 8px;
    border: 1px solid #eef2f4;
}
.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.stat-label {
    font-size: 0.72rem;
    color: #999;
    margin-top: 6px;
    letter-spacing: 0.3px;
}
.stat-update {
    font-size: 0.7rem;
    color: #aaa;
    text-align: right;
    margin-top: 6px;
}

.comment-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 620px;
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
    scrollbar-color: #ddd transparent;
}
.comment-list::-webkit-scrollbar {
    width: 4px;
}
.comment-list::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 8px;
}
.comment-list::-webkit-scrollbar-thumb {
    background: #ddd;
    border-radius: 8px;
}
.comment-item {
    background: #fafbfc;
    border-radius: var(--radius-sm);
    padding: 13px 14px;
    border-left: 3px solid #d0e8f2;
    transition: var(--transition);
}
.comment-item:hover {
    border-left-color: var(--primary);
    background: #f6fbfd;
}
.comment-user {
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--dark-gray);
    margin-bottom: 4px;
}
.comment-text {
    font-size: 0.8rem;
    color: #555;
    line-height: 1.55;
    word-break: break-word;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag-cloud a {
    display: inline-block;
    background: #f0f4f6;
    color: var(--dark-gray);
    padding: 6px 13px;
    border-radius: 16px;
    font-size: 0.78rem;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    letter-spacing: 0.3px;
}
.tag-cloud a:hover {
    background: var(--primary);
    color: #fff;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.advantage-item {
    text-align: center;
    padding: 20px 14px;
    background: #f9fbfc;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid transparent;
}
.advantage-item:hover {
    border-color: #d0eef8;
    box-shadow: var(--shadow);
}
.advantage-icon {
    font-size: 2.2rem;
    margin-bottom: 8px;
    color: var(--primary);
    font-weight: 700;
}
.advantage-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--darkest);
    margin-bottom: 4px;
}
.advantage-item p {
    font-size: 0.78rem;
    color: #777;
    line-height: 1.4;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item summary {
    padding: 14px 18px;
    font-weight: 600;
    cursor: pointer;
    color: var(--darkest);
    background: #fafbfc;
    list-style: none;
    font-size: 0.93rem;
    letter-spacing: 0.3px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.faq-item summary::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    transition: var(--transition);
}
.faq-item[open] summary::after {
    content: '-';
    transform: rotate(180deg);
}
.faq-item[open] summary {
    background: #e8f6fb;
    color: var(--primary);
}
.faq-item .faq-answer {
    padding: 14px 18px;
    font-size: 0.85rem;
    color: #555;
    line-height: 1.7;
    border-top: 1px solid var(--border);
}

.app-download-section {
    background: var(--darkest);
    color: #ddd;
    border-radius: var(--radius);
    padding: 28px 32px;
    box-shadow: var(--shadow-lg);
}
.app-download-section .card-title {
    color: #fff;
    border-bottom-color: var(--primary);
}
.app-download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.app-download-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #2a3139;
    color: #eee;
    text-decoration: none;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 2px solid transparent;
    letter-spacing: 0.3px;
    justify-content: center;
}
.app-download-btn:hover {
    border-color: var(--primary);
    background: #323b45;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 146, 202, 0.3);
}
.app-download-btn .app-icon {
    flex-shrink: 0;
}

.footer-nav {
    width: 100%;
    background: var(--darkest);
    color: #bbb;
    padding: 28px 24px 20px;
    margin-top: 0;
    border-top: 1px solid #3a4149;
}
.footer-inner {
    max-width: 1360px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
}
.footer-links a {
    color: #bbb;
    text-decoration: none;
    font-size: 0.82rem;
    transition: var(--transition);
    letter-spacing: 0.3px;
}
.footer-links a:hover {
    color: var(--primary);
}
.footer-copy {
    font-size: 0.78rem;
    color: #888;
    white-space: nowrap;
}

.character-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}
.character-card {
    text-align: center;
    background: #fafbfc;
    border-radius: var(--radius);
    padding: 16px 10px;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
}
.character-card:hover {
    border-color: #d0eef8;
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}
.character-card img {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 10px;
    background: #e8e8e8;
    border: 3px solid #eef2f4;
}
.character-card .char-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--darkest);
}
.character-card .char-role {
    font-size: 0.72rem;
    color: #999;
    margin-top: 2px;
}

@media (max-width: 1200px) {
    .comic-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .character-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .app-download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .sidebar-right {
        flex: 0 0 300px;
        width: 300px;
    }
}
@media (max-width: 992px) {
    .main-container {
        flex-direction: column;
        padding: 20px 16px;
        gap: 20px;
    }
    .content-left {
        flex: 1 1 100%;
    }
    .sidebar-right {
        flex: 1 1 100%;
        width: 100%;
        position: static;
        max-height: none;
        overflow-y: visible;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .sidebar-right .card {
        break-inside: avoid;
    }
    .sidebar-right .card:last-child {
        grid-column: 1 / -1;
    }
    .comic-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .character-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .nav-links {
        display: none;
    }
    .hamburger {
        display: flex;
    }
    .top-nav-inner {
        padding: 0 16px;
        height: 56px;
    }
    .btn-nav-action.desktop-only {
        display: none;
    }
    .btn-nav-action.mobile-inline {
        display: inline-block !important;
    }
}
@media (max-width: 768px) {
    .comic-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .comic-card img {
        height: 200px;
    }
    .character-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .character-card img {
        width: 70px;
        height: 70px;
    }
    .advantage-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .app-download-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .sidebar-right {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .card {
        padding: 16px 14px;
    }
    .card-title {
        font-size: 1.05rem;
    }
    .top-nav-inner {
        height: 50px;
        padding: 0 12px;
    }
    .top-nav .site-name h1 {
        font-size: 1.25rem;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    .footer-links {
        justify-content: center;
        gap: 12px;
    }
    .stat-row {
        gap: 8px;
    }
    .stat-item {
        padding: 10px 6px;
    }
    .stat-value {
        font-size: 1.2rem;
    }
}
@media (max-width: 480px) {
    .comic-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .comic-card img {
        height: 160px;
    }
    .comic-card-body {
        padding: 8px 10px 10px;
    }
    .comic-card-body .comic-name {
        font-size: 0.82rem;
    }
    .comic-card-body .comic-meta {
        font-size: 0.68rem;
    }
    .character-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .character-card img {
        width: 60px;
        height: 60px;
    }
    .app-download-grid {
        grid-template-columns: 1fr;
    }
    .advantage-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 993px) {
    .nav-links {
        display: flex;
    }
    .hamburger {
        display: none;
    }
    .btn-nav-action.mobile-inline {
        display: none !important;
    }
    .btn-nav-action.desktop-only {
        display: inline-block;
    }
}