:root {
    --green-light: #a3f7bf;
    --teal: #29a19c;
    --gray-deep: #435055;
    --dark-bg: #27323a;
    --white: #ffffff;
    --gray-light: #f5f6f8;
    --gray-border: #e2e7ea;
    --text-dark: #1a1f22;
    --text-mid: #435055;
    --text-light: #6b7c84;
    --shadow-sm: 0 1px 3px rgba(39, 50, 58, 0.08);
    --shadow-md: 0 4px 16px rgba(39, 50, 58, 0.12);
    --shadow-lg: 0 8px 30px rgba(39, 50, 58, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1320px;
    --sidebar-width: 340px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
    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: #f8f9fb;
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.top-nav {
    width: 100%;
    background: var(--dark-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
    transition: var(--transition);
}
.top-nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 60px;
    gap: 16px;
}
.nav-brand h1 {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--green-light);
    letter-spacing: 1px;
    white-space: nowrap;
    margin: 0;
    line-height: 1;
}
.nav-brand h1 a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
.nav-brand h1 a:hover {
    color: #c9ffe0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
}
.nav-links li a {
    display: inline-block;
    padding: 7px 13px;
    color: #c8d6db;
    text-decoration: none;
    font-size: 0.88rem;
    border-radius: 6px;
    transition: var(--transition);
    white-space: nowrap;
    font-weight: 500;
    letter-spacing: 0.3px;
}
.nav-links li a:hover,
.nav-links li a:focus-visible {
    background: rgba(163, 247, 191, 0.12);
    color: var(--green-light);
    outline: none;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.btn-login {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--teal);
    color: #fff;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none;
}
.btn-login:hover {
    background: #23908b;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(41, 161, 156, 0.4);
}
.btn-login:focus-visible {
    outline: 3px solid var(--green-light);
    outline-offset: 2px;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-shrink: 0;
    z-index: 1001;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: #c8d6db;
    border-radius: 2px;
    margin: 5px 0;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.page-wrapper {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px 20px 0;
    display: flex;
    gap: 24px;
    min-height: 60vh;
}
.main-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-bottom: 20px;
}
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 22px;
    padding-bottom: 20px;
}

.section-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px 22px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-border);
    transition: var(--transition);
}
.section-card:hover {
    box-shadow: var(--shadow-md);
}
.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--teal);
    display: inline-block;
    letter-spacing: 0.5px;
    position: relative;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--green-light);
    border-radius: 2px;
}
.section-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 14px;
    display: block;
}

.comic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}
.comic-card {
    background: var(--white);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.comic-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
}
.comic-card-img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    display: block;
    background: #e9edf0;
    transition: var(--transition);
}
.comic-card:hover .comic-card-img {
    filter: brightness(1.05);
}
.comic-card-body {
    padding: 10px 10px 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.comic-card-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-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(--text-light);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.comic-card-type {
    display: inline-block;
    font-size: 0.68rem;
    background: var(--green-light);
    color: #1a4a3a;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
    align-self: flex-start;
    margin-top: 2px;
    white-space: nowrap;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.featured-card {
    background: linear-gradient(135deg, #fdfefe 0%, #f0f7f5 100%);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--gray-border);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.featured-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
    transform: translateY(-4px);
}
.featured-card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
    background: #e0e6ea;
}
.featured-card-body {
    padding: 12px 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.featured-card-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-dark);
}
.featured-card-desc {
    font-size: 0.78rem;
    color: var(--text-light);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-badge {
    display: inline-block;
    background: var(--teal);
    color: #fff;
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 12px;
    font-weight: 600;
    align-self: flex-start;
    letter-spacing: 0.5px;
}

.character-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.character-card {
    text-align: center;
    background: #fafcfc;
    border-radius: var(--radius-md);
    padding: 16px 10px;
    border: 1px solid var(--gray-border);
    transition: var(--transition);
}
.character-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--teal);
}
.character-card-img {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto 10px;
    display: block;
    background: #e2e7ea;
    border: 3px solid var(--green-light);
}
.character-card-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--dark-bg);
}
.character-card-role {
    font-size: 0.75rem;
    color: var(--teal);
    font-weight: 600;
}
.character-card-desc {
    font-size: 0.72rem;
    color: var(--text-light);
    margin-top: 4px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.advantages-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.advantage-item {
    text-align: center;
    padding: 18px 12px;
    background: #f9fbfa;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-border);
    transition: var(--transition);
}
.advantage-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--green-light);
    background: #f4fdf8;
}
.advantage-icon-wrap {
    width: 50px;
    height: 50px;
    margin: 0 auto 10px;
    background: var(--green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #1a4a3a;
    font-weight: 700;
}
.advantage-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--dark-bg);
    margin-bottom: 4px;
}
.advantage-desc {
    font-size: 0.76rem;
    color: var(--text-light);
    line-height: 1.4;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.faq-item {
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
    background: #fdfefe;
}
.faq-item:hover {
    border-color: var(--teal);
    box-shadow: var(--shadow-sm);
}
.faq-question {
    padding: 14px 16px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--dark-bg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fafcfc;
    user-select: none;
    letter-spacing: 0.3px;
}
.faq-question::after {
    content: '+';
    font-size: 1.3rem;
    color: var(--teal);
    font-weight: 700;
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 8px;
}
.faq-item.open .faq-question::after {
    content: '−';
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 16px;
    font-size: 0.84rem;
    color: var(--text-mid);
    line-height: 1.6;
}
.faq-item.open .faq-answer {
    max-height: 200px;
    padding: 10px 16px 16px;
}

.sidebar .section-card {
    padding: 18px 16px;
}
.sidebar .section-title {
    font-size: 1.05rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
}
.stat-big-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--teal);
    text-align: center;
    letter-spacing: 1px;
    line-height: 1;
}
.stat-update-time {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-light);
    margin-top: 4px;
}
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    text-align: center;
    margin-top: 10px;
}
.stat-item-num {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-bg);
}
.stat-item-label {
    font-size: 0.7rem;
    color: var(--text-light);
}
.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;
    background: #fafcfc;
    border: 1px solid transparent;
}
.rank-list li:hover {
    background: #f4fdf8;
    border-color: var(--green-light);
    box-shadow: var(--shadow-sm);
}
.rank-num {
    font-weight: 800;
    font-size: 1rem;
    color: var(--teal);
    width: 26px;
    text-align: center;
    flex-shrink: 0;
}
.rank-num.top3 {
    color: #e8873a;
    font-size: 1.15rem;
}
.rank-img {
    width: 40px;
    height: 52px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
    background: #e0e6ea;
}
.rank-info {
    flex: 1;
    min-width: 0;
}
.rank-title {
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--text-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-sub {
    font-size: 0.7rem;
    color: var(--text-light);
}
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}
.tag-cloud a {
    display: inline-block;
    padding: 5px 12px;
    background: #f0f7f5;
    color: var(--teal);
    border-radius: 16px;
    font-size: 0.76rem;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
    letter-spacing: 0.3px;
}
.tag-cloud a:hover {
    background: var(--green-light);
    color: #1a4a3a;
    border-color: var(--teal);
}
.comment-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 520px;
    overflow-y: auto;
    padding-right: 4px;
}
.comment-list::-webkit-scrollbar {
    width: 4px;
}
.comment-list::-webkit-scrollbar-thumb {
    background: #d0d8dc;
    border-radius: 4px;
}
.comment-item {
    padding: 10px 12px;
    background: #fafcfc;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-border);
    font-size: 0.78rem;
    color: var(--text-mid);
    line-height: 1.55;
    transition: var(--transition);
}
.comment-item:hover {
    border-color: var(--teal);
    background: #f9fdfb;
}
.comment-user {
    font-weight: 700;
    font-size: 0.75rem;
    color: var(--dark-bg);
    margin-bottom: 4px;
    display: block;
}
.comment-text {
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.download-card {
    text-align: center;
    padding: 20px 14px;
    background: #fafcfc;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-border);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.download-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
    transform: translateY(-3px);
    background: #f4fdf8;
}
.download-card .app-icon {
    width: 44px;
    height: 44px;
    object-fit: contain;
    display: block;
}
.download-card .dl-title {
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--dark-bg);
}
.download-card .dl-sub {
    font-size: 0.7rem;
    color: var(--text-light);
}
.btn-download-sm {
    display: inline-block;
    padding: 6px 16px;
    background: var(--teal);
    color: #fff;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.4px;
    transition: var(--transition);
}
.btn-download-sm:hover {
    background: #23908b;
    box-shadow: 0 3px 10px rgba(41, 161, 156, 0.35);
}

.bottom-nav {
    width: 100%;
    background: var(--dark-bg);
    color: #bcc7cc;
    padding: 28px 20px 20px;
    margin-top: 10px;
    text-align: center;
}
.bottom-nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 16px 24px;
}
.bottom-nav a {
    color: #c8d6db;
    text-decoration: none;
    font-size: 0.82rem;
    transition: var(--transition);
    padding: 4px 8px;
    border-radius: 4px;
    letter-spacing: 0.3px;
}
.bottom-nav a:hover {
    color: var(--green-light);
    text-decoration: underline;
}
.bottom-nav .divider {
    color: #556268;
    font-size: 0.7rem;
}
.bottom-copyright {
    width: 100%;
    text-align: center;
    font-size: 0.72rem;
    color: #7a8a90;
    margin-top: 10px;
    letter-spacing: 0.3px;
}

@media (max-width: 1200px) {
    .comic-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .featured-grid { grid-template-columns: repeat(3, 1fr); }
    .character-grid { grid-template-columns: repeat(3, 1fr); }
    .advantages-row { grid-template-columns: repeat(2, 1fr); }
    .download-grid { grid-template-columns: repeat(2, 1fr); }
    .sidebar { width: 300px; }
}
@media (max-width: 992px) {
    .page-wrapper { flex-direction: column; gap: 20px; }
    .sidebar { width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .sidebar .section-card { padding: 16px 14px; }
    .comic-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .featured-grid { grid-template-columns: repeat(2, 1fr); }
    .character-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-links { gap: 2px; }
    .nav-links li a { padding: 6px 9px; font-size: 0.78rem; }
}
@media (max-width: 768px) {
    .top-nav-inner { height: 52px; padding: 0 12px; }
    .nav-brand h1 { font-size: 1.2rem; }
    .nav-links { display: none; position: absolute; top: 52px; left: 0; width: 100%; background: var(--dark-bg); flex-direction: column; padding: 12px 0; gap: 0; box-shadow: 0 6px 20px rgba(0,0,0,0.3); z-index: 999; border-radius: 0 0 12px 12px; }
    .nav-links.active { display: flex; }
    .nav-links li a { padding: 10px 20px; display: block; width: 100%; border-radius: 0; font-size: 0.9rem; }
    .hamburger { display: block; }
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .featured-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .character-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .advantages-row { grid-template-columns: 1fr 1fr; gap: 8px; }
    .download-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
    .sidebar { grid-template-columns: 1fr; gap: 14px; }
    .section-card { padding: 16px 12px; }
    .section-title { font-size: 1.1rem; }
    .btn-login { padding: 6px 14px; font-size: 0.8rem; }
    .bottom-nav-inner { gap: 10px 14px; }
    .bottom-nav a { font-size: 0.74rem; }
}
@media (max-width: 480px) {
    .comic-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
    .comic-card-body { padding: 6px 7px 8px; }
    .comic-card-title { font-size: 0.78rem; }
    .comic-card-meta { font-size: 0.66rem; }
    .featured-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
    .character-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
    .advantages-row { grid-template-columns: 1fr; gap: 8px; }
    .download-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
    .stat-big-number { font-size: 2rem; }
    .btn-login { padding: 5px 10px; font-size: 0.74rem; border-radius: 16px; }
    .nav-brand h1 { font-size: 1rem; }
}