/* 🦞 龙虾战队 - 龙虾红+华夏金+文明蓝 */
:root {
    --lobster-red: #C0392B;
    --huaxia-gold: #D4A017;
    --civilization-blue: #2C3E50;
    --bg-primary: #0D1117;
    --bg-secondary: #161B22;
    --bg-card: #1C2333;
    --text-primary: #E6EDF3;
    --text-secondary: #8B949E;
    --border: #30363D;
    --radius: 12px;
    --glow-gold: rgba(212, 160, 23, 0.15);
    --glow-red: rgba(192, 57, 43, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Navigation */
.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}
.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}
.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}
.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--huaxia-gold); }
.nav-external {
    background: var(--bg-card);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    font-size: 0.85rem !important;
}
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1.2rem;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
}

/* Hero */
.hero {
    padding: 6rem 1.5rem 4rem;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border);
}
.hero-badge {
    display: inline-block;
    background: var(--glow-gold);
    border: 1px solid var(--huaxia-gold);
    color: var(--huaxia-gold);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}
.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--lobster-red), var(--huaxia-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-slogan {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}
.hero-mission {
    font-size: 1.1rem;
    color: var(--huaxia-gold);
    font-style: italic;
    margin-bottom: 2rem;
}
.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: var(--lobster-red);
    color: white;
}
.btn-primary:hover { background: #E74C3C; transform: translateY(-1px); }
.btn-secondary {
    background: var(--huaxia-gold);
    color: var(--bg-primary);
}
.btn-secondary:hover { background: #E5B84C; transform: translateY(-1px); }
.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--huaxia-gold); color: var(--huaxia-gold); }

/* Sections */
.section { padding: 4rem 0; }
.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
}
.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.section-action { text-align: center; margin-top: 2rem; }

/* Page Header */
.page-header {
    padding: 3rem 1.5rem 2rem;
    text-align: center;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}
.page-header h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
.page-header p { color: var(--text-secondary); }
.page-subtitle { font-size: 0.95rem; margin-top: 0.5rem; }

/* Mission Grid */
.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.mission-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: border-color 0.2s, transform 0.2s;
}
.mission-card:hover { border-color: var(--huaxia-gold); transform: translateY(-2px); }
.mission-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.mission-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.mission-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Episode Grid */
.episode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}
.episode-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
}
.episode-card:hover { border-color: var(--huaxia-gold); transform: translateY(-2px); }
.card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}
.card-placeholder { font-size: 3rem; opacity: 0.5; }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.card-duration {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}
.card-status {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}
.status-published { background: #27AE60; color: white; }
.card-body { padding: 1.2rem; }
.card-body h3 { font-size: 1.1rem; margin-bottom: 0.3rem; }
.card-subtitle { color: var(--huaxia-gold); font-size: 0.9rem; margin-bottom: 0.5rem; }
.card-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; }
.card-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.8rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Highlight Grid */
.highlight-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}
.highlight-card {
    text-align: center;
    padding: 2rem 1rem;
}
.highlight-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--lobster-red), var(--huaxia-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.highlight-label { color: var(--text-secondary); margin-top: 0.3rem; }

/* Platform Grid */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.platform-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, transform 0.2s;
}
.platform-card:hover { border-color: var(--huaxia-gold); transform: translateY(-2px); }
.platform-icon { font-size: 2rem; margin-bottom: 0.8rem; }
.platform-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.platform-card p { color: var(--text-secondary); font-size: 0.9rem; }
.platform-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--huaxia-gold);
    font-size: 0.9rem;
}

/* Squad Grid */
.squad-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}
.squad-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.2s, transform 0.2s;
}
.squad-card:hover { border-color: var(--huaxia-gold); transform: translateY(-2px); }
.squad-avatar { font-size: 2.5rem; margin-bottom: 0.5rem; }
.squad-card h3 { font-size: 1rem; margin-bottom: 0.3rem; }
.squad-role { color: var(--huaxia-gold); font-size: 0.8rem; margin-bottom: 0.5rem; }
.squad-desc { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.4; }

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: border-color 0.2s;
}
.project-card:hover { border-color: var(--huaxia-gold); }
.project-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--huaxia-gold); }
.project-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Pipeline Flow */
.pipeline-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.pipeline-step {
    text-align: center;
    padding: 1rem;
}
.step-icon { font-size: 1.8rem; margin-bottom: 0.3rem; }
.step-label { font-size: 0.8rem; color: var(--text-secondary); }
.pipeline-arrow { color: var(--huaxia-gold); font-size: 1.2rem; }

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: border-color 0.2s;
}
.tech-card:hover { border-color: var(--huaxia-gold); }
.tech-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--huaxia-gold); }
.tech-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 3rem 1.5rem;
    text-align: center;
}
.footer-brand {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.footer-logo { font-size: 1.5rem; }
.footer-slogan { color: var(--text-secondary); font-size: 0.9rem; }
.footer-mission { color: var(--huaxia-gold); font-style: italic; font-size: 0.9rem; margin-top: 0.5rem; }
.footer-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1.5rem;
}
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--huaxia-gold); }
.footer-copy { color: var(--text-secondary); font-size: 0.8rem; margin-top: 1.5rem; opacity: 0.6; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-secondary); border-bottom: 1px solid var(--border); padding: 1rem; gap: 0.8rem; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .hero-title { font-size: 2rem; }
    .highlight-grid { grid-template-columns: repeat(2, 1fr); }
    .episode-grid { grid-template-columns: 1fr; }
    .pipeline-flow { flex-direction: column; }
    .pipeline-arrow { transform: rotate(90deg); }
}