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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
    color: #1a1a2e;
    line-height: 1.7;
    background: #fff;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #eee;
    z-index: 100;
}

.nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: #555;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #2563eb;
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #f8faff 0%, #eef2ff 100%);
}

.hero h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1a1a2e;
}

.hero-sub {
    font-size: 18px;
    color: #666;
    max-width: 600px;
    margin: 0 auto 36px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary {
    background: #2563eb;
    color: #fff;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #fff;
    color: #2563eb;
    border: 1px solid #2563eb;
}

.btn-secondary:hover {
    background: #f8faff;
}

.btn-large {
    padding: 16px 48px;
    font-size: 17px;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-alt {
    background: #f8faff;
}

.section h2 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 48px;
    color: #1a1a2e;
}

/* Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 768px) {
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

/* Card */
.card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 32px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.card-highlight {
    border-top: 3px solid #2563eb;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .steps {
        grid-template-columns: 1fr;
    }
}

.step {
    display: flex;
    gap: 20px;
}

.step-num {
    font-size: 28px;
    font-weight: 700;
    color: #2563eb;
    min-width: 50px;
}

.step h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.step p {
    font-size: 14px;
    color: #666;
}

/* Trust */
.trust-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.trust-content p {
    font-size: 16px;
    color: #555;
    margin-bottom: 12px;
}

.trust-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: #2563eb;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: #888;
    margin-top: 4px;
}

/* CTA */
.cta-section {
    text-align: center;
    background: #1a1a2e;
    color: #fff;
}

.cta-section h2 {
    color: #fff;
    margin-bottom: 16px;
}

.cta-section p {
    color: #aaa;
    margin-bottom: 8px;
}

.cta-section .btn {
    margin-top: 32px;
}

/* Footer */
.footer {
    background: #111;
    color: #888;
    padding: 48px 0 24px;
    font-size: 14px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

.footer h4 {
    color: #ddd;
    margin-bottom: 8px;
}

.footer a {
    color: #888;
    text-decoration: none;
}

.footer a:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #222;
    padding-top: 24px;
    text-align: center;
}

/* Page header */
.page-header {
    padding: 120px 0 60px;
    text-align: center;
    background: #f8faff;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 12px;
}

.page-header p {
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Content page */
.content-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 60px 24px;
}

.content-page h2 {
    font-size: 24px;
    margin: 32px 0 16px;
}

.content-page p {
    margin-bottom: 16px;
    color: #444;
}

.content-page ul {
    margin-bottom: 16px;
    padding-left: 20px;
}

.content-page li {
    margin-bottom: 8px;
    color: #444;
}

/* Blog list */
.blog-list {
    max-width: 720px;
    margin: 0 auto;
}

.blog-item {
    padding: 32px 0;
    border-bottom: 1px solid #eee;
}

.blog-item:last-child {
    border-bottom: none;
}

.blog-item h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.blog-item h3 a {
    color: #1a1a2e;
    text-decoration: none;
}

.blog-item h3 a:hover {
    color: #2563eb;
}

.blog-meta {
    font-size: 13px;
    color: #999;
    margin-bottom: 12px;
}

.blog-item p {
    font-size: 14px;
    color: #666;
}

/* Contact form */
.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* Blog article */
.article {
    max-width: 720px;
    margin: 0 auto;
    padding: 60px 24px;
}

.article h1 {
    font-size: 32px;
    line-height: 1.3;
    margin-bottom: 16px;
}

.article .blog-meta {
    margin-bottom: 32px;
}

.article h2 {
    font-size: 22px;
    margin: 40px 0 16px;
}

.article h3 {
    font-size: 18px;
    margin: 32px 0 12px;
}

.article p {
    margin-bottom: 16px;
    color: #444;
    line-height: 1.9;
}

.article ul, .article ol {
    margin-bottom: 16px;
    padding-left: 20px;
}

.article li {
    margin-bottom: 8px;
    color: #444;
    line-height: 1.8;
}

.article blockquote {
    border-left: 4px solid #2563eb;
    padding: 16px 20px;
    margin: 24px 0;
    background: #f8faff;
    color: #555;
    font-style: normal;
}

/* GEO friendly */
.article table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}

.article th, .article td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.article th {
    background: #f8faff;
    font-weight: 600;
}