:root {
    --primary: #1a1a2e;
    --primary-light: #16213e;
    --accent: #e94560;
    --accent-light: #ff6b81;
    --accent-glow: rgba(233, 69, 96, 0.35);
    --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 45%, #0f3460 100%);
    --gradient-2: linear-gradient(135deg, #e94560 0%, #ff6b81 50%, #ffa07a 100%);
    --gradient-3: linear-gradient(120deg, #0f3460 0%, #1a1a2e 40%, #e94560 100%);
    --bg: #f0f2f8;
    --surface: #ffffff;
    --surface-glass: rgba(255, 255, 255, 0.72);
    --surface-glass-border: rgba(255, 255, 255, 0.45);
    --text: #1e1e2f;
    --text-secondary: #4a4a6a;
    --border: #e2e4ed;
    --shadow: 0 4px 24px rgba(26, 26, 46, 0.08);
    --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.14);
    --shadow-glow: 0 8px 32px rgba(233, 69, 96, 0.28);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 50px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

body.dark-mode {
    --bg: #0b0b14;
    --surface: #16162a;
    --surface-glass: rgba(22, 22, 42, 0.78);
    --surface-glass-border: rgba(255, 255, 255, 0.08);
    --text: #eaeaf0;
    --text-secondary: #a0a0b8;
    --border: #2a2a44;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 8px 32px rgba(233, 69, 96, 0.4);
    --gradient-1: linear-gradient(135deg, #0b0b14 0%, #16162a 45%, #0f3460 100%);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.8;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(233, 69, 96, 0.08), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(15, 52, 96, 0.06), transparent);
    background-attachment: fixed;
    padding-top: 68px;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

body.dark-mode {
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(233, 69, 96, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(15, 52, 96, 0.15), transparent);
}

/* ===== 吸顶导航 - 毛玻璃 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--surface-glass-border);
    height: 68px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    transition: background var(--transition), border var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    backdrop-filter: blur(24px) saturate(200%);
}

.nav-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
    transition: transform var(--transition-bounce);
}

.nav-logo:hover {
    transform: scale(1.04);
}

.nav-logo svg {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 10px;
    box-shadow: 0 4px 12px var(--accent-glow);
    transition: box-shadow var(--transition);
}

.nav-logo:hover svg {
    box-shadow: 0 6px 20px var(--accent-glow);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition), transform var(--transition);
    white-space: nowrap;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    border-radius: 2px;
    transition: width var(--transition), left var(--transition);
}

.nav-links a:hover {
    color: var(--accent);
    background: rgba(233, 69, 96, 0.08);
    transform: translateY(-1px);
}

.nav-links a:hover::after {
    width: 60%;
    left: 20%;
}

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

.search-box {
    display: flex;
    align-items: center;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 0 14px;
    height: 38px;
    transition: border var(--transition), box-shadow var(--transition);
}

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

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    color: var(--text);
    font-size: 0.85rem;
    width: 120px;
    font-family: inherit;
}

.search-box input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.search-box button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    transition: color var(--transition), transform var(--transition);
}

.search-box button:hover {
    color: var(--accent);
    transform: scale(1.15);
}

.theme-toggle {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-bounce);
}

.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: rotate(20deg) scale(1.1);
    box-shadow: 0 0 20px var(--accent-glow);
}

.mobile-menu-btn {
    display: none;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    transition: all var(--transition);
}

.mobile-menu-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== 主体容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 16px 0 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb span {
    margin: 0 6px;
    opacity: 0.5;
}

/* ===== 渐变Banner轮播 ===== */
.banner {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    margin: 16px 0 40px;
    background: var(--gradient-1);
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    isolation: isolate;
}

.banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(233, 69, 96, 0.25), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(15, 52, 96, 0.35), transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 129, 0.1), transparent 60%);
    z-index: 1;
    pointer-events: none;
    animation: bannerGlow 8s ease-in-out infinite alternate;
}

@keyframes bannerGlow {
    0% { opacity: 0.7; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.05); }
}

.banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.banner-slide {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 32px;
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
    transform: scale(0.98);
    pointer-events: none;
    z-index: 2;
}

.banner-slide.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.banner-slide h2 {
    color: #fff;
    font-size: clamp(1.5rem, 4vw, 2.6rem);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: 1.5px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
    line-height: 1.35;
}

.banner-slide p {
    color: rgba(255, 255, 255, 0.85);
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    max-width: 640px;
    line-height: 1.9;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.12);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.banner-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-bounce);
}

.banner-dots button:hover {
    border-color: #fff;
    transform: scale(1.2);
}

.banner-dots button.active {
    background: #fff;
    border-color: #fff;
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

/* ===== 数字动画 ===== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin: 0 0 48px;
}

.stat-card {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 26px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.stat-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-number {
    font-size: 2.1rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 6px;
    font-weight: 500;
}

/* ===== 通用区块 ===== */
.section {
    margin-bottom: 56px;
    scroll-margin-top: 84px;
}

.section-title {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
    position: relative;
    padding-left: 18px;
    line-height: 1.4;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    background: var(--gradient-2);
    border-radius: 4px;
    box-shadow: 0 0 12px var(--accent-glow);
}

.section-subtitle {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    padding-left: 18px;
}

/* ===== 卡片网格 - 毛玻璃圆角卡片 ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 26px;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, var(--accent-glow), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.card:hover::after {
    opacity: 0.35;
}

.card h3 {
    font-size: 1.08rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
    position: relative;
    z-index: 1;
    transition: color var(--transition);
}

.card:hover h3 {
    color: var(--accent);
}

.card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* ===== 文章列表 ===== */
.article-list {
    display: grid;
    gap: 16px;
}

.article-item {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 24px 26px;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.article-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-2);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition);
}

.article-item:hover {
    transform: translateX(6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.article-item:hover::before {
    transform: scaleY(1);
}

.article-item h3 {
    font-size: 1.02rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.article-item h3 a {
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition);
}

.article-item h3 a:hover {
    color: var(--accent);
}

.article-meta {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.article-item p {
    font-size: 0.86rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.8;
}

.read-more {
    font-size: 0.82rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 700;
    transition: opacity var(--transition), transform var(--transition);
    display: inline-block;
}

.read-more:hover {
    opacity: 0.75;
    transform: translateX(4px);
}

/* ===== FAQ手风琴 ===== */
.faq-list {
    display: grid;
    gap: 10px;
}

.faq-item {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border var(--transition), box-shadow var(--transition), transform var(--transition);
}

.faq-item:hover {
    border-color: rgba(233, 69, 96, 0.4);
}

.faq-item.open {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 24px;
    text-align: left;
    font-size: 0.94rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-family: inherit;
    transition: color var(--transition), background var(--transition);
}

.faq-question:hover {
    color: var(--accent);
    background: rgba(233, 69, 96, 0.04);
}

.faq-question .icon {
    font-size: 1.3rem;
    transition: transform var(--transition-bounce), color var(--transition);
    flex-shrink: 0;
    color: var(--accent);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(233, 69, 96, 0.1);
    line-height: 1;
}

.faq-item.open .faq-question .icon {
    transform: rotate(45deg);
    background: var(--accent);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s ease, padding 0.35s ease;
    padding: 0 24px;
}

.faq-item.open .faq-answer {
    max-height: 500px;
    padding: 0 24px 22px;
}

.faq-answer p {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.9;
    border-top: 1px dashed var(--border);
    padding-top: 14px;
}

/* ===== HowTo步骤 ===== */
.howto-steps {
    display: grid;
    gap: 16px;
    counter-reset: step;
}

.howto-step {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 22px 26px 22px 72px;
    position: relative;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition), box-shadow var(--transition);
}

.howto-step:hover {
    transform: translateX(6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.howto-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 22px;
    top: 22px;
    width: 34px;
    height: 34px;
    background: var(--gradient-2);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.88rem;
    box-shadow: 0 4px 14px var(--accent-glow);
    transition: transform var(--transition-bounce);
}

.howto-step:hover::before {
    transform: scale(1.12) rotate(-8deg);
}

.howto-step h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    transition: color var(--transition);
}

.howto-step:hover h3 {
    color: var(--accent);
}

.howto-step p {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== 联系信息 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.contact-card {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--accent);
}

.contact-card p {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.contact-card a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.contact-card a:hover {
    color: var(--accent);
}

/* ===== 友情链接 ===== */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.friend-links a {
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 7px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    transition: all var(--transition-bounce);
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.friend-links a:hover {
    color: #fff;
    border-color: transparent;
    background: var(--gradient-2);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border-top: 1px solid var(--surface-glass-border);
    padding: 48px 0 24px;
    margin-top: 40px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-2);
    opacity: 0.6;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text);
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--gradient-2);
    border-radius: 2px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 0.84rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer-col a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-bottom a:hover {
    color: var(--accent);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-2);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px var(--accent-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.9);
    transition: all var(--transition-bounce);
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 10px 32px var(--accent-glow);
}

.back-to-top:active {
    transform: translateY(-2px) scale(0.98);
}

/* ===== 滚动动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 图片懒加载 ===== */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.6s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* ===== 搜索高亮 ===== */
.search-highlight {
    background: rgba(233, 69, 96, 0.2);
    border-radius: 3px;
    padding: 1px 3px;
    color: var(--accent);
    font-weight: 600;
    animation: highlightPulse 1.5s ease-in-out infinite alternate;
}

@keyframes highlightPulse {
    0% { background: rgba(233, 69, 96, 0.15); }
    100% { background: rgba(233, 69, 96, 0.3); }
}

/* ===== 内部锚点导航 ===== */
.anchor-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.anchor-nav a {
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    transition: all var(--transition-bounce);
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.anchor-nav a:hover {
    color: #fff;
    border-color: transparent;
    background: var(--gradient-2);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--accent-glow);
}

/* ===== 作者信息 ===== */
.author-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--radius);
    padding: 22px 26px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: transform var(--transition-bounce), border var(--transition);
}

.author-box:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.author-avatar {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 1.3rem;
    flex-shrink: 0;
    box-shadow: 0 4px 16px var(--accent-glow);
    transition: transform var(--transition-bounce);
}

.author-box:hover .author-avatar {
    transform: scale(1.08) rotate(5deg);
}

.author-info h4 {
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.author-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.update-info {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.update-info span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* ===== 表格 ===== */
.info-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.85rem;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--surface-glass-border);
}

.info-table th,
.info-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.info-table th {
    background: rgba(233, 69, 96, 0.08);
    font-weight: 700;
    color: var(--text);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-table td {
    color: var(--text-secondary);
    transition: background var(--transition);
}

.info-table tbody tr:hover td {
    background: rgba(233, 69, 96, 0.04);
}

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

/* ===== 响应式 - 平板 ===== */
@media (max-width: 900px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--surface-glass);
        -webkit-backdrop-filter: blur(24px) saturate(180%);
        backdrop-filter: blur(24px) saturate(180%);
        border-bottom: 1px solid var(--surface-glass-border);
        flex-direction: column;
        padding: 14px 24px 22px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

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

    .nav-links a {
        padding: 12px 14px;
        width: 100%;
        border-radius: var(--radius-sm);
    }

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

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

    .search-box input {
        width: 80px;
    }

    .banner {
        min-height: 300px;
    }

    .banner-slide {
        padding: 36px 20px;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== 响应式 - 手机 ===== */
@media (max-width: 600px) {
    body {
        padding-top: 62px;
    }

    .navbar {
        height: 62px;
        padding: 0 16px;
    }

    .nav-links {
        top: 62px;
    }

    .nav-logo {
        font-size: 1.05rem;
    }

    .nav-logo svg {
        width: 30px;
        height: 30px;
    }

    .search-box {
        display: none;
    }

    .container {
        padding: 0 16px;
    }

    .banner {
        min-height: 260px;
        border-radius: var(--radius-sm);
    }

    .banner-slide h2 {
        font-size: 1.35rem;
    }

    .banner-slide p {
        font-size: 0.85rem;
    }

    .banner-dots {
        padding: 6px 12px;
        gap: 8px;
    }

    .section {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 1.25rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    .stat-card {
        padding: 20px 12px;
    }

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

    .card {
        padding: 22px;
    }

    .howto-step {
        padding: 20px 18px 20px 62px;
    }

    .howto-step::before {
        left: 16px;
        top: 20px;
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }

    .article-item {
        padding: 20px;
    }

    .author-box {
        padding: 18px 20px;
        gap: 12px;
    }

    .author-avatar {
        width: 48px;
        height: 48px;
        font-size: 1.1rem;
    }

    .info-table th,
    .info-table td {
        padding: 10px 12px;
        font-size: 0.78rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .anchor-nav {
        gap: 6px;
    }

    .anchor-nav a {
        font-size: 0.78rem;
        padding: 5px 10px;
    }
}

/* ===== 超小屏 ===== */
@media (max-width: 380px) {
    .stats-row {
        grid-template-columns: 1fr;
    }

    .banner-slide h2 {
        font-size: 1.15rem;
    }
}

/* ===== 无障碍与打印 ===== */
@media print {
    .navbar,
    .back-to-top,
    .banner-dots,
    .theme-toggle,
    .mobile-menu-btn,
    .search-box {
        display: none !important;
    }

    body {
        padding-top: 0;
        background: #fff;
    }

    .banner {
        min-height: auto;
        background: #f0f0f0;
    }

    .banner-slide {
        position: static;
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .banner-slide h2,
    .banner-slide p {
        color: #000;
        text-shadow: none;
    }
}

/* ===== 选中文本 ===== */
::selection {
    background: rgba(233, 69, 96, 0.3);
    color: var(--text);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
    transition: background var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ===== 焦点可见性 ===== */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== 高对比度模式 ===== */
@media (prefers-contrast: high) {
    :root {
        --border: #000;
        --text-secondary: #333;
    }

    body.dark-mode {
        --border: #fff;
        --text-secondary: #ddd;
    }
}