:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.06), 0 4px 6px -4px rgba(0,0,0,0.04);
    --radius: 12px;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    margin: 0;
    color: var(--text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero {
    padding: 60px 0 40px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin: 0 0 12px;
    color: #0f172a;
}

.hero p {
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 32px;
    font-size: 1.125rem;
}

.search-wrap {
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 1rem;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    outline: none;
    transition: border-color 0.2s;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 10px 24px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 32px;
}

.cat-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
}

.cat-btn:hover,
.cat-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #cbd5e1;
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.tool-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: #0f172a;
}

.tool-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin: 60px 0 16px;
    color: #0f172a;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.feature-card .tool-icon {
    font-size: 2rem;
}

.article-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    margin: 60px 0;
    box-shadow: var(--shadow);
}

.article-section h2 {
    font-size: 1.8rem;
    margin-top: 0;
}

.article-section h3 {
    font-size: 1.3rem;
    margin-top: 32px;
}

.article-section p {
    line-height: 1.8;
    color: var(--text-muted);
}

.article-section a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.article-section a:hover {
    text-decoration: underline;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto 60px;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.faq-item h4 {
    margin: 0 0 8px;
    font-weight: 700;
}

.faq-item p {
    margin: 0;
    color: var(--text-muted);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.blog-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.2s;
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 600;
}

.blog-cat {
    color: var(--primary);
}

.blog-card h3 {
    font-size: 1.1rem;
    margin: 0 0 8px;
}

.blog-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

.trust-banner {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    margin: 60px 0;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.badge {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 40px 0 30px;
    }
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}