```css
/* ============================================================
   www.91 - 少女漫画家园 | style.css v3.0
   Author: UI Engineer & Designer
   Description: 青春奇幻 · 响应式 · 暗色模式 · 毛玻璃 · 滚动动画
   ============================================================ */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 浅色主题（默认） */
    --bg-page: #f8f5f2;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.65);
    --bg-header: rgba(26, 38, 52, 0.85);
    --bg-footer: #1a2532;
    --text-primary: #1a2634;
    --text-secondary: #34495e;
    --text-title: #0b1a2a;
    --text-on-dark: #f2f6fa;
    --text-muted-on-dark: #b0c4d8;
    --accent: #c44569;
    --accent-soft: rgba(196, 69, 105, 0.12);
    --accent-dark: #9e2b4e;
    --border-light: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
    --shadow-accent: 0 8px 30px rgba(196, 69, 105, 0.25);
    --btn-text: #ffffff;
    --code-bg: #eef2f7;
    --scrollbar-track: #f1f0ed;
    --scrollbar-thumb: #cbd5e1;
    --glass-border: rgba(255, 255, 255, 0.6);
    --gradient-banner: linear-gradient(135deg, #1a2634 0%, #2c3e50 40%, #4a3a5c 100%);
    --gradient-title: linear-gradient(135deg, #ffb6c1, #c44569, #9e2b4e);
    --gradient-card-hover: linear-gradient(145deg, rgba(196,69,105,0.03), rgba(255,255,255,0.6));
    --nav-bg: rgba(26, 38, 52, 0.7);
    --nav-link: #e0e8f0;
    --nav-link-hover: #ffffff;
    --nav-link-bg-hover: rgba(255, 255, 255, 0.12);
    --search-bg: rgba(255, 255, 255, 0.1);
    --search-border: rgba(255, 255, 255, 0.15);
    --search-text: #ffffff;
    --search-placeholder: #a0b4c8;
    --footer-link: #a0b4c8;
    --footer-link-hover: #ffffff;
    --badge-bg: #eef2f7;
    --badge-text: #2c3e50;
    --table-header-bg: #2c3e50;
    --table-header-text: #ffffff;
    --table-border: rgba(0, 0, 0, 0.08);
    --faq-arrow: #7f8c9b;
    --scroll-anim-opacity: 1;
}

/* 暗色模式变量覆盖 */
body.dark-mode {
    --bg-page: #0f141b;
    --bg-card: #1a2332;
    --bg-glass: rgba(30, 40, 54, 0.7);
    --bg-header: rgba(15, 20, 27, 0.9);
    --bg-footer: #0a0f16;
    --text-primary: #dce5f0;
    --text-secondary: #a5b8cc;
    --text-title: #ffffff;
    --text-on-dark: #f0f4fa;
    --text-muted-on-dark: #8ba0b8;
    --accent: #e06c8a;
    --accent-soft: rgba(224, 108, 138, 0.15);
    --accent-dark: #ff9db8;
    --border-light: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    --shadow-accent: 0 8px 30px rgba(224, 108, 138, 0.2);
    --code-bg: #1e2a3a;
    --scrollbar-track: #1a2332;
    --scrollbar-thumb: #3a4c62;
    --glass-border: rgba(255, 255, 255, 0.08);
    --gradient-banner: linear-gradient(135deg, #0f141b 0%, #1a2332 50%, #2a1f2e 100%);
    --gradient-card-hover: linear-gradient(145deg, rgba(224,108,138,0.05), rgba(255,255,255,0.02));
    --nav-bg: rgba(15, 20, 27, 0.8);
    --nav-link: #a5b8cc;
    --nav-link-hover: #ffffff;
    --nav-link-bg-hover: rgba(255, 255, 255, 0.08);
    --search-bg: rgba(255, 255, 255, 0.06);
    --search-border: rgba(255, 255, 255, 0.1);
    --search-text: #e0e8f0;
    --search-placeholder: #6b8098;
    --footer-link: #6b8098;
    --footer-link-hover: #e0e8f0;
    --badge-bg: #2a3b4e;
    --badge-text: #cbd5e1;
    --table-header-bg: #2a3b4e;
    --table-header-text: #f0f4fa;
    --table-border: rgba(255, 255, 255, 0.08);
    --faq-arrow: #6b8098;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.75;
    font-size: 16px;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 20px;
    border: 2px solid var(--scrollbar-track);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ---------- Layout Container ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- 头部导航 ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-header);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    padding: 12px 0;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-decoration: none;
    background: var(--gradient-title);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.2s ease;
    display: inline-block;
}

.logo-text:hover {
    transform: scale(1.03);
}

.logo-sub {
    color: var(--text-muted-on-dark);
    font-size: 0.8rem;
    border-left: 2px solid var(--accent);
    padding-left: 12px;
    font-weight: 400;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    align-items: center;
}

.nav-links a {
    color: var(--nav-link);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 30px;
    transition: all 0.25s ease;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-links a:hover {
    background: var(--nav-link-bg-hover);
    color: var(--nav-link-hover);
}

.nav-links a:hover::after {
    width: 60%;
}

.nav-cta {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    background: var(--search-bg);
    border: 1px solid var(--search-border);
    border-radius: 50px;
    padding: 4px 4px 4px 18px;
    backdrop-filter: blur(10px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--search-text);
    min-width: 140px;
    font-size: 0.9rem;
    padding: 4px 0;
}

.search-box input::placeholder {
    color: var(--search-placeholder);
}

.search-box button {
    background: var(--accent);
    border: none;
    border-radius: 50px;
    padding: 6px 16px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.search-box button:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

/* 主题切换 */
.theme-toggle {
    background: var(--search-bg);
    border: 1px solid var(--search-border);
    color: var(--nav-link);
    border-radius: 50px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.theme-toggle:hover {
    background: var(--nav-link-bg-hover);
    color: var(--nav-link-hover);
    transform: rotate(15deg);
}

/* 移动菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: var(--search-bg);
    border: 1px solid var(--search-border);
    border-radius: 12px;
    color: var(--nav-link);
    padding: 8px 12px;
    font-size: 1.2rem;
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: var(--nav-link-bg-hover);
    color: var(--nav-link-hover);
}

/* 移动端导航 */
@media (max-width: 992px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-header);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: 10px 20px 20px;
        gap: 4px;
        border-bottom: 1px solid var(--glass-border);
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }

    .nav-links a {
        padding: 12px 20px;
        border-radius: 12px;
        font-size: 1rem;
    }

    .nav-links a::after {
        display: none;
    }

    .mobile-nav-open .nav-links {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .search-box {
        display: none;
    }

    .site-header {
        padding: 10px 0;
    }
}

@media (max-width: 576px) {
    .logo-sub {
        display: none;
    }

    .logo-text {
        font-size: 1.6rem;
    }
}

/* ---------- Banner 主视觉 ---------- */
.banner {
    background: var(--gradient-banner);
    padding: 80px 0;
    color: white;
    position: relative;
    overflow: hidden;
    border-radius: 0 0 60px 60px;
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(196, 69, 105, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 182, 193, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -30px) scale(1.05); }
    66% { transform: translate(-15px, 20px) scale(0.95); }
}

.banner .container {
    position: relative;
    z-index: 2;
}

.banner h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 16px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.5px;
    animation: fadeInUp 0.8s ease-out;
}

.banner p {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: #dce4ed;
    max-width: 700px;
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.banner .btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- 按钮 ---------- */
.btn {
    background: var(--accent);
    border: none;
    padding: 14px 32px;
    border-radius: 50px;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-accent);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(196, 69, 105, 0.3);
}

.btn:hover::before {
    left: 100%;
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.8);
    color: white;
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

/* ---------- 区块通用 ---------- */
section {
    scroll-margin-top: 80px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-title);
    position: relative;
    padding-left: 20px;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 70%;
    background: var(--accent);
    border-radius: 8px;
}

.section-sub {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 28px;
    font-weight: 400;
}

/* ---------- 卡片网格 ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-title);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    background: var(--gradient-card-hover);
}

.card:hover::before {
    opacity: 1;
}

.card h3 {
    color: var(--text-title);
    font-size: 1.3rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ---------- 徽章 ---------- */
.badge {
    display: inline-block;
    background: var(--badge-bg);
    color: var(--badge-text);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin: 4px;
    transition: all 0.3s ease;
}

.badge:hover {
    background: var(--accent-soft);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ---------- 文章列表 ---------- */
.article-list {
    list-style: none;
}

.article-list li {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease, padding-left 0.3s ease;
    border-radius: 12px;
    margin: 4px 0;
}

.article-list li:hover {
    background: var(--accent-soft);
    padding-left: 28px;
}

.article-list li:last-child {
    border-bottom: none;
}

.article-list a {
    color: var(--accent-dark);
    font-weight: 600;
    text-decoration: none;
    font-size: 1.05rem;
    transition: color 0.2s ease;
}

.article-list a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.article-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
    white-space: nowrap;
    margin-left: 16px;
}

@media (max-width: 768px) {
    .article-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

/* ---------- FAQ ---------- */
.faq-item {
    background: var(--bg-card);
    border-radius: 16px;
    margin: 12px 0;
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-soft);
}

.faq-question {
    padding: 20px 24px;
    font-weight: 700;
    color: var(--text-title);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background 0.3s ease;
    user-select: none;
    font-size: 1rem;
}

.faq-question:hover {
    background: var(--accent-soft);
}

.faq-question span {
    font-size: 0.8rem;
    color: var(--faq-arrow);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-question span {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px 20px;
    color: var(--text-primary);
    border-top: 1px dashed var(--border-light);
    padding-top: 16px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden-faq {
    display: none;
}

/* ---------- HowTo 教程 ---------- */
.howto-box {
    background: var(--bg-card);
    padding: 32px;
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.step-list {
    counter-reset: step;
    list-style: none;
    margin: 20px 0;
}

.step-list li {
    counter-increment: step;
    margin-bottom: 14px;
    color: var(--text-primary);
    padding: 12px 16px;
    background: var(--bg-page);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
    transition: transform 0.3s ease, background 0.3s ease;
    font-size: 0.95rem;
}

.step-list li:hover {
    transform: translateX(6px);
    background: var(--accent-soft);
}

.step-list li::before {
    content: "步骤 " counter(step) " · ";
    font-weight: 700;
    color: var(--accent);
}

/* ---------- Footer ---------- */
footer {
    background: var(--bg-footer);
    color: var(--text-on-dark);
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-grid h4 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 16px;
    font-weight: 700;
}

.footer-grid a {
    color: var(--footer-link);
    text-decoration: none;
    display: block;
    margin: 8px 0;
    font-size: 0.9rem;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-grid a:hover {
    color: var(--footer-link-hover);
    padding-left: 8px;
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    color: var(--text-muted-on-dark);
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--accent);
    color: white;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    border: none;
    transition: all 0.3s ease;
    opacity: 0.9;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 16px 40px rgba(196, 69, 105, 0.4);
    opacity: 1;
}

/* ---------- 表格 ---------- */
.info-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.info-table th {
    background: var(--table-header-bg);
    color: var(--table-header-text);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
}

.info-table td {
    border-bottom: 1px solid var(--table-border);
    padding: 14px 16px;
    color: var(--text-primary);
}

.info-table tr:last-child td {
    border-bottom: none;
}

.info-table tr:hover td {
    background: var(--accent-soft);
}

/* ---------- 滚动动画 ---------- */
.scroll-anim {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-anim.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- 通用工具类 ---------- */
.text-center {
    text-align: center;
}

.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

/* ---------- 响应式调整 ---------- */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .banner {
        padding: 60px 0;
        border-radius: 0 0 40px 40px;
    }

    .banner h1 {
        font-size: 2.2rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .banner h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .howto-box {
        padding: 20px;
    }

    .faq-question {
        padding: 16px 18px;
        font-size: 0.95rem;
    }

    .faq-answer {
        padding: 0 18px 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}

/* ---------- 打印样式 ---------- */
@media print {
    .site-header, .back-to-top, .banner .btn-group {
        display: none;
    }
}
```