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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航 */
.navbar {
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.85);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-brand .logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0f172a;
    text-decoration: none;
    background: linear-gradient(135deg, #10b981, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-menu {
    display: flex;
    gap: 24px;
}

.navbar-menu a {
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: 0.2s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: #10b981;
    border-bottom-color: #10b981;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #1e293b;
    cursor: pointer;
}

/* Hero */
.hero {
    padding: 60px 0 40px;
    text-align: center;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border-bottom: 1px solid #e2e8f0;
}

.hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: #0f172a;
}

.hero .subtitle {
    font-size: 1.1rem;
    color: #475569;
    max-width: 600px;
    margin: 0 auto 24px;
}

.hero-cta .btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(16,185,129,0.3);
    transition: all 0.3s;
}

.hero-cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(16,185,129,0.4);
}

/* 工具栏 */
.toolbar {
    padding: 24px 0;
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
}

.toolbar .container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
}

.search-box {
    flex: 1;
    min-width: 220px;
    position: relative;
}

.search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border: 1px solid #e2e8f0;
    border-radius: 40px;
    font-size: 14px;
    transition: 0.3s;
    background: #f8fafc;
}

.search-box input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16,185,129,0.15);
}

.filter-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-group select {
    padding: 10px 20px;
    border: 1px solid #e2e8f0;
    border-radius: 30px;
    background: #fff;
    font-size: 14px;
    cursor: pointer;
}

.btn-sort {
    padding: 10px 20px;
    border: 1px solid #e2e8f0;
    border-radius: 30px;
    background: #fff;
    font-size: 14px;
    cursor: pointer;
    transition: 0.2s;
}

.btn-sort:hover {
    background: #f1f5f9;
}

/* 卡片网格 */
.cards-grid {
    padding: 40px 0;
}

.cards-grid .container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: #ffffff;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    transition: all 0.3s ease;
    border: 1px solid #f1f5f9;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: #d1fae5;
}

.card-icon {
    font-size: 2.4rem;
    color: #10b981;
    margin-bottom: 12px;
}

.card-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #0f172a;
}

.card-body p {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 12px;
    flex: 1;
}

.card-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: #94a3b8;
    margin-bottom: 10px;
}

.card-meta i {
    margin-right: 4px;
    color: #f59e0b;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.tag {
    background: #ecfdf5;
    color: #059669;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.card-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.btn-visit, .btn-favorite {
    padding: 8px 18px;
    border: none;
    border-radius: 30px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-visit {
    background: #10b981;
    color: #fff;
    flex: 1;
    justify-content: center;
}

.btn-visit:hover {
    background: #059669;
}

.btn-favorite {
    background: #f1f5f9;
    color: #475569;
}

.btn-favorite:hover {
    background: #e2e8f0;
}

.btn-favorite.favorited {
    background: #fef2f2;
    color: #ef4444;
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 40px 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: 0.2s;
}

.footer-links a:hover {
    color: #10b981;
}

.footer p {
    font-size: 0.9rem;
}

.footer a {
    color: #10b981;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        flex-direction: column;
        background: #fff;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        padding: 20px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: 0 8px 24px rgba(0,0,0,0.05);
    }

    .navbar-menu.open {
        display: flex;
    }

    .navbar-toggle {
        display: block;
    }

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

    .toolbar .container {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        justify-content: center;
    }

    .cards-grid .container {
        grid-template-columns: 1fr;
    }
}