:root {
    --primary: #4797b1;
    --primary-dark: #3a7d94;
    --primary-light: #6db8cf;
    --green-light: #c5ecbe;
    --green-lighter: #daf5d5;
    --yellow-warm: #f7f3ce;
    --yellow-lighter: #fcf9e8;
    --pink-soft: #ffdede;
    --pink-lighter: #ffefef;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    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: #fafaf9;
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.top-nav {
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.top-nav-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
    gap: 16px;
}
.nav-brand {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--gray-900);
}
.nav-brand h1 {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
    white-space: nowrap;
    margin: 0;
    line-height: 1;
}
.nav-brand .brand-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.nav-brand .brand-icon svg {
    width: 20px;
    height: 20px;
    fill: white;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 0;
    margin: 0;
}
.nav-links::-webkit-scrollbar {
    display: none;
}
.nav-links a {
    display: inline-block;
    padding: 8px 14px;
    text-decoration: none;
    color: var(--gray-600);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 20px;
    white-space: nowrap;
    transition: var(--transition);
    position: relative;
}
.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--primary);
    background: var(--yellow-lighter);
}
.nav-links a.active {
    color: var(--primary);
    background: var(--green-lighter);
    font-weight: 600;
}
.nav-actions {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 22px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    letter-spacing: 0.01em;
}
.btn-primary-nav {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(71, 151, 177, 0.35);
}
.btn-primary-nav:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 14px rgba(71, 151, 177, 0.45);
    transform: translateY(-1px);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    color: var(--gray-700);
}

.main-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 28px 24px 40px;
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 28px;
}
.content-area {
    min-width: 0;
}
.sidebar {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.section-block {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 26px 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    margin-bottom: 22px;
    transition: var(--transition);
}
.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.comic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}
.comic-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.comic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.comic-card-img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--gray-100);
}
.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-info {
    padding: 12px 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.comic-card-info .comic-name {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--gray-900);
    line-height: 1.3;
}
.comic-card-info .comic-meta {
    font-size: 0.73rem;
    color: var(--gray-500);
    display: flex;
    flex-wrap: wrap;
    gap: 4px 8px;
}
.comic-card-info .comic-type-tag {
    display: inline-block;
    background: var(--yellow-warm);
    color: #7c6a0a;
    font-size: 0.68rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
    align-self: flex-start;
    margin-top: 2px;
}
.comment-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.comment-item {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 16px 18px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.comment-user {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--gray-800);
}
.comment-date {
    font-size: 0.7rem;
    color: var(--gray-400);
}
.comment-text {
    font-size: 0.84rem;
    color: var(--gray-700);
    line-height: 1.6;
}
.rank-list {
    list-style: none;
    padding: 0;
}
.rank-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 8px;
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
    cursor: pointer;
    border-radius: var(--radius-sm);
}
.rank-list li:last-child {
    border-bottom: none;
}
.rank-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
    color: #fff;
}
.rank-num.top1 { background: #e74c3c; }
.rank-num.top2 { background: #f39c12; }
.rank-num.top3 { background: #e67e22; }
.rank-num.normal { background: #b0b8c1; }
.rank-info .rank-comic-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-800);
}
.rank-info .rank-comic-stat {
    font-size: 0.72rem;
    color: var(--gray-500);
}
.stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}
.stat-item {
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    padding: 14px 12px;
    text-align: center;
    border: 1px solid var(--gray-100);
}
.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
}
.stat-label {
    font-size: 0.72rem;
    color: var(--gray-500);
    margin-top: 3px;
}
.footer-nav {
    width: 100%;
    background: var(--gray-900);
    color: #c9cdd4;
    padding: 40px 24px 28px;
    margin-top: 20px;
}
.footer-inner {
    max-width: 1320px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
}
.footer-col ul li a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.82rem;
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: #fff;
}
.footer-bottom {
    max-width: 1320px;
    margin: 24px auto 0;
    padding-top: 20px;
    border-top: 1px solid #374151;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    font-size: 0.78rem;
    color: #6b7280;
}
.footer-bottom a {
    color: #9ca3af;
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 16px;
    background: #1f2937;
    transition: var(--transition);
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}
@media (max-width: 768px) {
    .comic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .main-container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        order: 10;
    }
}