*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --brand-primary: #1a1a2e;
    --brand-secondary: #e94560;
    --brand-accent: #0f3460;
    --brand-light: #f5f5f7;
    --brand-text: #2d2d3a;
    --brand-muted: #6b6b80;
    --brand-bg: #ffffff;
    --brand-card: rgba(255, 255, 255, 0.72);
    --brand-border: rgba(224, 224, 232, 0.7);
    --brand-shadow: 0 4px 20px rgba(26, 26, 46, 0.08);
    --brand-radius: 16px;
    --brand-radius-sm: 10px;
    --brand-glass: rgba(255, 255, 255, 0.55);
    --brand-glass-border: rgba(255, 255, 255, 0.6);
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
[data-theme="dark"] {
    --brand-primary: #e8e8f0;
    --brand-secondary: #ff6b81;
    --brand-accent: #6c8cc4;
    --brand-light: #1e1e2a;
    --brand-text: #d8d8e4;
    --brand-muted: #9a9ab0;
    --brand-bg: #0e0e16;
    --brand-card: rgba(28, 28, 40, 0.72);
    --brand-border: rgba(46, 46, 62, 0.75);
    --brand-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
    --brand-glass: rgba(28, 28, 40, 0.55);
    --brand-glass-border: rgba(255, 255, 255, 0.08);
}
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--brand-bg);
    background-image: radial-gradient(circle at 15% 10%, rgba(233, 69, 96, 0.06), transparent 45%), radial-gradient(circle at 85% 20%, rgba(15, 52, 96, 0.07), transparent 45%);
    color: var(--brand-text);
    line-height: 1.75;
    font-size: 16px;
    transition: background var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--brand-secondary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brand-accent); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.navbar {
    position: sticky; top: 0; z-index: 1000;
    background: var(--brand-glass);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid var(--brand-glass-border);
    box-shadow: var(--brand-shadow);
    transition: background var(--transition), border var(--transition);
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px; gap: 16px;
}
.logo {
    display: flex; align-items: center; gap: 8px;
    font-size: 1.25rem; font-weight: 700;
    color: var(--brand-primary); flex-shrink: 0;
    transition: transform var(--transition);
}
.logo:hover { transform: scale(1.03); }
.logo svg { width: 32px; height: 32px; }
.nav-links {
    display: flex; align-items: center; gap: 4px;
    list-style: none; flex-wrap: wrap;
}
.nav-links a {
    padding: 6px 12px; border-radius: var(--brand-radius-sm);
    font-size: 0.9rem; color: var(--brand-muted);
    font-weight: 500; white-space: nowrap;
    position: relative;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.nav-links a:hover {
    background: var(--brand-light); color: var(--brand-primary);
    transform: translateY(-1px);
}
.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.search-box {
    display: flex; align-items: center;
    background: var(--brand-glass); border-radius: 20px;
    padding: 4px 12px; border: 1px solid var(--brand-border);
    transition: border var(--transition), box-shadow var(--transition);
}
.search-box:focus-within {
    border-color: var(--brand-secondary);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
}
.search-box input {
    border: none; background: transparent; outline: none;
    font-size: 0.85rem; color: var(--brand-text);
    width: 120px; padding: 4px 0;
}
.search-box input::placeholder { color: var(--brand-muted); }
.search-box button {
    background: none; border: none; cursor: pointer;
    color: var(--brand-muted); padding: 2px; display: flex;
    transition: color var(--transition);
}
.search-box button:hover { color: var(--brand-secondary); }
.theme-toggle {
    background: var(--brand-glass); border: 1px solid var(--brand-border);
    border-radius: 50%; width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--brand-text);
    transition: background var(--transition), transform var(--transition), border var(--transition);
}
.theme-toggle:hover {
    background: var(--brand-light); transform: rotate(20deg) scale(1.05);
    border-color: var(--brand-secondary);
}
.menu-toggle {
    display: none; background: none; border: none;
    cursor: pointer; color: var(--brand-text); padding: 4px;
}
.breadcrumb {
    padding: 12px 0; font-size: 0.85rem;
    color: var(--brand-muted);
}
.breadcrumb a { color: var(--brand-muted); }
.breadcrumb a:hover { color: var(--brand-secondary); }
.breadcrumb span { margin: 0 6px; }
.banner {
    position: relative; overflow: hidden;
    border-radius: var(--brand-radius);
    background: linear-gradient(135deg, #0f3460 0%, #1a1a2e 45%, #e94560 130%);
    margin-bottom: 32px; min-height: 280px;
    box-shadow: 0 12px 40px rgba(26, 26, 46, 0.25);
}
.banner::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(233, 69, 96, 0.35), transparent 55%), radial-gradient(circle at 10% 90%, rgba(15, 52, 96, 0.5), transparent 50%);
    pointer-events: none;
}
.banner-slide {
    display: none; padding: 60px 40px;
    flex-direction: column; justify-content: center;
    min-height: 280px; color: #fff;
    position: relative; z-index: 1;
}
.banner-slide.active { display: flex; animation: fadeIn 0.6s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.banner-slide h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; line-height: 1.3; }
.banner-slide p { font-size: 1.05rem; opacity: 0.92; max-width: 600px; margin-bottom: 20px; color: #fff; }
.banner-slide .btn {
    display: inline-block; background: var(--brand-secondary);
    color: #fff; padding: 10px 28px; border-radius: 30px;
    font-weight: 600; font-size: 0.95rem; width: fit-content;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.banner-slide .btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 28px rgba(233, 69, 96, 0.5);
    color: #fff; background: #ff5c75;
}
.banner-dots {
    position: absolute; bottom: 16px; left: 50%;
    transform: translateX(-50%); display: flex; gap: 8px; z-index: 2;
}
.banner-dots button {
    width: 10px; height: 10px; border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5); background: transparent;
    cursor: pointer; transition: all var(--transition);
}
.banner-dots button.active { background: #fff; border-color: #fff; width: 24px; border-radius: 6px; }
.card {
    background: var(--brand-card);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    backdrop-filter: blur(16px) saturate(160%);
    border: 1px solid var(--brand-border);
    border-radius: var(--brand-radius); padding: 28px;
    box-shadow: var(--brand-shadow); margin-bottom: 24px;
    transition: background var(--transition), border var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
    box-shadow: 0 12px 36px rgba(26, 26, 46, 0.14);
    transform: translateY(-2px);
}
.section-title {
    font-size: 1.6rem; font-weight: 800; color: var(--brand-primary);
    margin-bottom: 8px; position: relative; padding-bottom: 12px;
}
.section-title::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 48px; height: 4px;
    background: linear-gradient(90deg, var(--brand-secondary), var(--brand-accent));
    border-radius: 2px;
}
.section-subtitle {
    color: var(--brand-muted); font-size: 0.95rem;
    margin-bottom: 24px; margin-top: 8px;
}
h3 { font-size: 1.25rem; font-weight: 700; color: var(--brand-primary); margin: 20px 0 10px; }
h4 { font-size: 1.05rem; font-weight: 600; color: var(--brand-primary); margin: 16px 0 8px; }
p { margin-bottom: 14px; color: var(--brand-text); }
ul, ol { padding-left: 22px; margin-bottom: 14px; }
li { margin-bottom: 6px; color: var(--brand-text); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.stat-item {
    text-align: center; padding: 20px 10px;
    border-radius: var(--brand-radius-sm);
    transition: background var(--transition), transform var(--transition);
}
.stat-item:hover { background: var(--brand-light); transform: translateY(-3px); }
.stat-number {
    font-size: 2.2rem; font-weight: 800;
    background: linear-gradient(135deg, var(--brand-secondary), var(--brand-accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: var(--brand-secondary);
    line-height: 1.2;
}
.stat-label { font-size: 0.9rem; color: var(--brand-muted); margin-top: 4px; }
.article-item {
    padding: 16px 0; border-bottom: 1px solid var(--brand-border);
    display: flex; gap: 16px; align-items: flex-start;
    transition: transform var(--transition), padding var(--transition);
}
.article-item:hover { transform: translateX(4px); }
.article-item:last-child { border-bottom: none; }
.article-thumb {
    width: 80px; height: 60px; border-radius: var(--brand-radius-sm);
    flex-shrink: 0; overflow: hidden; background: var(--brand-light);
    transition: transform var(--transition), box-shadow var(--transition);
}
.article-item:hover .article-thumb { transform: scale(1.06); box-shadow: 0 6px 16px rgba(233, 69, 96, 0.2); }
.article-thumb svg { width: 100%; height: 100%; }
.article-meta { font-size: 0.8rem; color: var(--brand-muted); margin-bottom: 4px; }
.article-title { font-size: 1rem; font-weight: 600; color: var(--brand-primary); margin-bottom: 4px; }
.article-summary { font-size: 0.85rem; color: var(--brand-muted); line-height: 1.5; }
.read-more {
    font-size: 0.85rem; color: var(--brand-secondary); font-weight: 500;
    display: inline-flex; align-items: center; gap: 4px; margin-top: 4px;
    transition: gap var(--transition), color var(--transition);
}
.read-more:hover { gap: 8px; color: var(--brand-accent); }
.faq-item {
    border: 1px solid var(--brand-border);
    border-radius: var(--brand-radius-sm);
    margin-bottom: 10px; overflow: hidden;
    background: var(--brand-glass);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: border var(--transition), box-shadow var(--transition);
}
.faq-item:hover { border-color: var(--brand-secondary); box-shadow: 0 4px 16px rgba(233, 69, 96, 0.12); }
.faq-question {
    width: 100%; text-align: left; padding: 16px 20px;
    background: transparent; border: none; cursor: pointer;
    font-size: 0.95rem; font-weight: 600; color: var(--brand-primary);
    display: flex; justify-content: space-between; align-items: center;
    transition: background var(--transition);
}
.faq-question:hover { background: var(--brand-light); }
.faq-question .icon {
    transition: transform var(--transition); flex-shrink: 0;
    color: var(--brand-muted);
}
.faq-item.open .faq-question .icon { transform: rotate(180deg); color: var(--brand-secondary); }
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 20px; background: var(--brand-light);
}
.faq-item.open .faq-answer { max-height: 600px; padding: 16px 20px; }
.faq-answer p { font-size: 0.9rem; color: var(--brand-muted); margin-bottom: 8px; }
.howto-step {
    display: flex; gap: 16px; margin-bottom: 20px;
    padding: 16px; border-radius: var(--brand-radius-sm);
    background: var(--brand-glass);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid var(--brand-border);
    transition: transform var(--transition), box-shadow var(--transition), border var(--transition);
}
.howto-step:hover {
    transform: translateX(6px);
    box-shadow: 0 6px 20px rgba(15, 52, 96, 0.12);
    border-color: var(--brand-secondary);
}
.step-num {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-secondary), #ff5c75);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.95rem; flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.35);
}
.step-content h4 { margin: 0 0 6px; font-size: 0.95rem; }
.step-content p { font-size: 0.9rem; color: var(--brand-muted); margin: 0; }
.team-item {
    text-align: center; padding: 20px;
    border-radius: var(--brand-radius-sm);
    transition: background var(--transition), transform var(--transition);
}
.team-item:hover { background: var(--brand-light); transform: translateY(-4px); }
.team-avatar {
    width: 72px; height: 72px; border-radius: 50%;
    margin: 0 auto 12px; overflow: hidden;
    background: var(--brand-light);
    border: 2px solid var(--brand-border);
    transition: transform var(--transition), border-color var(--transition);
}
.team-item:hover .team-avatar { transform: scale(1.08); border-color: var(--brand-secondary); }
.team-avatar svg { width: 100%; height: 100%; }
.team-name { font-weight: 700; color: var(--brand-primary); }
.team-role { font-size: 0.85rem; color: var(--brand-muted); margin-bottom: 8px; }
.team-bio { font-size: 0.85rem; color: var(--brand-muted); line-height: 1.5; }
.footer {
    background: linear-gradient(160deg, #1a1a2e 0%, #0f0f1c 100%);
    color: #c8c8d8;
    padding: 48px 0 24px; margin-top: 40px;
    position: relative; overflow: hidden;
}
.footer::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--brand-secondary), var(--brand-accent), var(--brand-secondary));
}
[data-theme="dark"] .footer { background: linear-gradient(160deg, #0a0a12 0%, #06060c 100%); }
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px; margin-bottom: 32px;
}
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer a { color: #a0a0b8; font-size: 0.85rem; display: block; margin-bottom: 8px; transition: color var(--transition), transform var(--transition); }
.footer a:hover { color: #fff; transform: translateX(3px); }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px; text-align: center;
    font-size: 0.8rem; color: #8888a0;
}
.footer-bottom a { display: inline; color: #a0a0b8; margin: 0 4px; }
.back-to-top {
    position: fixed; bottom: 30px; right: 30px;
    width: 44px; height: 44px; border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-secondary), #ff5c75);
    color: #fff;
    border: none; cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.45);
    opacity: 0; visibility: hidden;
    transition: all var(--transition); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-5px) scale(1.06); box-shadow: 0 10px 28px rgba(233, 69, 96, 0.6); }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.search-highlight { background: #ffe066; padding: 0 2px; border-radius: 2px; }
[id] { scroll-margin-top: 80px; }
@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: var(--brand-card);
        -webkit-backdrop-filter: blur(18px) saturate(180%);
        backdrop-filter: blur(18px) saturate(180%);
        border-bottom: 1px solid var(--brand-border);
        padding: 16px; gap: 4px; box-shadow: var(--brand-shadow);
    }
    .nav-links.open a { width: 100%; }
    .menu-toggle { display: flex; }
}
@media (max-width: 600px) {
    .banner-slide { padding: 40px 24px; }
    .banner-slide h2 { font-size: 1.4rem; }
    .section-title { font-size: 1.3rem; }
    .card { padding: 20px; }
    .search-box { display: none; }
    .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}
@media print {
    .navbar, .back-to-top, .footer, .banner-dots { display: none; }
    body { background: #fff; color: #000; }
    .card { box-shadow: none; border: 1px solid #ccc; }
}