* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --bg-deep: #060b14;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.18);
    --text-primary: #e8ecf1;
    --text-secondary: #a0aab4;
    --text-tertiary: #6b7380;
    --accent-gold: #c9a96e;
    --accent-gold-light: #d4b87a;
    --accent-blue: #5b9cf5;
    --accent-purple: #8b7cf0;
    --accent-teal: #4dc9c0;
    --accent-rose: #e08aaa;
    --radius-md: 16px;
    --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
    --shadow-card-hover: 0 8px 48px rgba(0, 0, 0, 0.55), 0 1px 0 rgba(255, 255, 255, 0.07) inset;
    --shadow-glow-gold: 0 0 40px rgba(201, 169, 110, 0.2);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at 15% 10%, rgba(91, 156, 245, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 75% 25%, rgba(139, 124, 240, 0.05) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 60%, rgba(201, 169, 110, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 30% 80%, rgba(77, 201, 192, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 90%, rgba(224, 138, 170, 0.03) 0%, transparent 45%);
    background-attachment: fixed;
}
.container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
header {
    background: rgba(10, 16, 28, 0.7);
    backdrop-filter: blur(28px) saturate(140%);
    -webkit-backdrop-filter: blur(28px) saturate(140%);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 12px 0;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #f0ddb4, #d1b56f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    filter: drop-shadow(0 0 12px rgba(255, 215, 0, 0.4));
}
.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 12px rgba(226, 212, 129, 0.692));
    animation: glow 2s ease-in-out infinite alternate;
}
.nav-links {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}
.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all var(--transition-smooth);
    padding: 6px 8px;
    border-radius: 6px;
    white-space: nowrap;
}
.nav-links a:hover {
    color: var(--accent-gold-light);
    background: rgba(201, 169, 110, 0.08);
}
.nav-links a.active {
    color: var(--accent-gold-light);
}
.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 28px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
    color: #1a1a1a;
    border-radius: 50px;
    border: none;
    box-shadow: 0 4px 20px rgba(201, 169, 110, 0.3);
    margin-left: 8px;
}
.btn-primary:hover {
    box-shadow: 0 8px 32px rgba(201, 169, 110, 0.5);
    transform: translateY(-2px);
}
.btn-glass {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 24px rgba(255, 255, 255, 0.06);
    transform: translateY(-2px);
}
.btn-outline-gold {
    border: 1px solid rgba(201, 169, 110, 0.4);
    color: var(--accent-gold-light);
    background: transparent;
}
.btn-outline-gold:hover {
    background: rgba(201, 169, 110, 0.1);
    border-color: rgba(201, 169, 110, 0.7);
    box-shadow: 0 0 40px rgba(201, 169, 110, 0.2);
    transform: translateY(-2px);
}
.hero {
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
}
.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
}
.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 36px;
}
.hero-badge {
    display: inline-block;
    background: rgba(201, 169, 110, 0.1);
    border: 1px solid rgba(201, 169, 110, 0.4);
    border-radius: 30px;
    padding: 8px 22px;
    color: var(--accent-gold-light);
    font-weight: 500;
    margin-bottom: 24px;
}
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.section-title .sub {
    color: var(--accent-gold-light);
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.9rem;
}
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 50px;
}
.video-card {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-smooth);
}
.video-card:hover {
    transform: translateY(-4px);
}
.video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 12px;
    box-shadow: var(--shadow-card);
}
.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.video-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    transition: all var(--transition-smooth);
}
.video-card:hover .video-overlay {
    background: var(--accent-gold);
    transform: translate(-50%, -50%) scale(1.1);
}
.video-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-card);
}
.card:hover {
    transform: translateY(-8px);
    border-color: var(--glass-border-hover);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-card-hover);
}
.card h3 {
    font-size: 1.35rem;
    margin: 16px 0 10px;
    color: var(--text-primary);
}
.card .tag {
    display: inline-block;
    background: rgba(201, 169, 110, 0.15);
    color: var(--accent-gold-light);
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.card ul {
    list-style: none;
    margin-top: 14px;
    color: var(--text-secondary);
    font-size: 0.92rem;
}
.card ul li {
    padding: 4px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.card ul li:last-child {
    border-bottom: none;
}
.chapter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
    margin-bottom: 50px;
}
.chapter-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    border-left: 4px solid var(--accent-gold);
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-card);
}
.chapter-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow-gold), var(--shadow-card-hover);
    border-left-color: var(--accent-gold-light);
}
.chapter-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.chapter-card .subtitle {
    color: var(--accent-gold-light);
    font-weight: 600;
    margin-bottom: 16px;
}
.chapter-card p, .chapter-card li {
    color: var(--text-secondary);
    font-size: 0.92rem;
}
.tools-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
    margin: 30px 0 60px;
}
.tool-item {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 12px 24px;
    color: var(--text-primary);
    font-weight: 500;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-smooth);
}
.tool-item:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold-light);
    background: var(--bg-card-hover);
}
.matrix-table {
    overflow-x: auto;
    margin-bottom: 60px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px;
    border: 1px solid var(--glass-border);
}
table {
    width: 100%;
    border-collapse: collapse;
    color: var(--text-secondary);
}
th {
    text-align: left;
    padding: 14px 12px;
    background: rgba(201, 169, 110, 0.08);
    color: var(--accent-gold-light);
    font-weight: 600;
    border-bottom: 1px solid var(--glass-border);
}
td {
    padding: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.9rem;
}
tr:last-child td {
    border-bottom: none;
}
.quote-box {
    text-align: center;
    padding: 50px 20px;
    background: radial-gradient(circle at center, rgba(201, 169, 110, 0.1) 0%, transparent 70%);
    border-radius: var(--radius-md);
    margin-bottom: 60px;
    border: 1px solid rgba(201, 169, 110, 0.15);
}
.quote-box blockquote {
    font-size: 1.6rem;
    font-style: italic;
    color: var(--text-primary);
    max-width: 700px;
    margin: 0 auto 20px;
}
.quote-box cite {
    color: var(--accent-gold-light);
    font-weight: 600;
}
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-tertiary);
    font-size: 0.9rem;
}
.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 16px;
}
.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-smooth);
}
.footer-links a:hover {
    color: var(--accent-gold-light);
}
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.4rem;
    }
    .nav-links {
        gap: 14px;
    }
    .nav-links a:not(.btn-primary) {
        display: none;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .chapter-card {
        padding: 24px 20px;
    }
}
.contact-section {
    padding: 40px 0;
}
.contact-section .container {
    position: relative;
    z-index: 1;
    text-align: center;
}
.contact-section h3 {
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.contact-section .author {
    color: var(--accent-gold-light);
    font-weight: 700;
}
.contact-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.contact-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.contact-btn {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(201, 169, 110, 0.4);
    color: var(--accent-gold-light);
    padding: 14px 36px;
    border-radius: 50px;
    text-decoration: none !important;
    font-weight: 600;
    transition: all var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}
.contact-btn:hover {
    background: rgba(201, 169, 110, 0.15);
    border-color: var(--accent-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 110, 0.2);
}

/* ============ 背景网格效果 ============ */
.bg-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.25;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* ============ 粒子动画效果 ============ */
.particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}
.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    animation: floatUp 12s infinite ease-in;
}
.particle:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 14s; }
.particle:nth-child(2) { left: 25%; animation-delay: 3s; animation-duration: 11s; }
.particle:nth-child(3) { left: 40%; animation-delay: 6s; animation-duration: 13s; }
.particle:nth-child(4) { left: 55%; animation-delay: 2s; animation-duration: 15s; }
.particle:nth-child(5) { left: 70%; animation-delay: 5s; animation-duration: 10s; }
.particle:nth-child(6) { left: 85%; animation-delay: 8s; animation-duration: 12s; }

@keyframes floatUp {
    0% { bottom: -20px; opacity: 0; transform: translateY(0) scale(0.5); }
    15% { opacity: 0.7; }
    50% { opacity: 0.3; transform: translateY(-50vh) scale(1.2); }
    85% { opacity: 0.05; }
    100% { bottom: 105vh; opacity: 0; transform: translateY(-105vh) scale(0.3); }
}

/* ============ 玻璃态卡片 ============ */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
}
.glass-card .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 16px;
    flex-shrink: 0;
}
.glass-card .card-icon.blue {
    background: rgba(91, 156, 245, 0.15);
    color: var(--accent-blue);
}
.glass-card .card-icon.gold {
    background: rgba(201, 169, 110, 0.15);
    color: var(--accent-gold-light);
}
.glass-card .card-icon.purple {
    background: rgba(139, 124, 240, 0.15);
    color: var(--accent-purple);
}
.glass-card .card-icon.teal {
    background: rgba(77, 201, 192, 0.15);
    color: var(--accent-teal);
}
.glass-card .card-icon.rose {
    background: rgba(224, 138, 170, 0.15);
    color: var(--accent-rose);
}
.glass-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}
.glass-card p {
    font-size: 0.88rem;
    color: #a0aab4;
    line-height: 1.55;
    flex-grow: 1;
}
.card-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-right: 6px;
    margin-bottom: 4px;
}
.tag-blue { background: rgba(91, 156, 245, 0.12); color: var(--accent-blue); }
.tag-gold { background: rgba(201, 169, 110, 0.12); color: var(--accent-gold-light); }
.tag-purple { background: rgba(139, 124, 240, 0.12); color: var(--accent-purple); }
.tag-teal { background: rgba(77, 201, 192, 0.12); color: var(--accent-teal); }

/* ============ 时间线组件 ============ */
.timeline {
    position: relative;
    padding-left: 40px;
    margin: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, rgba(201, 169, 110, 0.5), rgba(139, 124, 240, 0.3), transparent);
    border-radius: 1px;
}
.timeline-item {
    position: relative;
    margin-bottom: 24px;
    padding-left: 20px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -29px;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-gold);
    border: 2px solid rgba(201, 169, 110, 0.4);
    box-shadow: 0 0 12px rgba(201, 169, 110, 0.3);
}
.timeline-item .time-label {
    font-size: 0.75rem;
    color: var(--accent-gold-light);
    font-weight: 600;
}
.timeline-item .time-content {
    font-size: 0.9rem;
    color: #a0aab4;
    margin-top: 2px;
}

/* ============ 平台按钮 ============ */
.platform-btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}
.platform-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 24px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
    color: #e8ecf1;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    white-space: nowrap;
}
.platform-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}
.platform-btn.bilibili {
    border-color: rgba(251, 114, 153, 0.4);
    background: rgba(251, 114, 153, 0.08);
}
.platform-btn.bilibili:hover {
    border-color: rgba(251, 114, 153, 0.7);
    box-shadow: 0 0 28px rgba(251, 114, 153, 0.2);
}
.platform-btn.wechat {
    border-color: rgba(46, 194, 112, 0.4);
    background: rgba(46, 194, 112, 0.08);
}
.platform-btn.wechat:hover {
    border-color: rgba(46, 194, 112, 0.7);
    box-shadow: 0 0 28px rgba(46, 194, 112, 0.2);
}

/* ============ 高亮框 ============ */
.highlight-box {
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid rgba(201, 169, 110, 0.25);
    background: rgba(201, 169, 110, 0.04);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    margin: 20px 0;
}
.highlight-box h4 {
    color: var(--accent-gold-light);
    margin-bottom: 8px;
    font-size: 0.95rem;
}
.highlight-box p {
    color: #a0aab4;
    font-size: 0.88rem;
    line-height: 1.6;
}

/* ============ 动画效果 ============ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-in {
    animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }

/* ============ 卡片网格布局 ============ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 1024px) {
    .card-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 640px) {
    .card-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* ============ 渐变背景装饰 ============ */
.gradient-bg {
    position: relative;
    overflow: hidden;
}
.gradient-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 20% 20%, rgba(91, 156, 245, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(139, 124, 240, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(201, 169, 110, 0.04) 0%, transparent 60%);
    pointer-events: none;
}