/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif; color: #333; line-height: 1.6; background: #fff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Navbar */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); border-bottom: 1px solid #f0f0f0; transition: box-shadow 0.3s; }
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.nav-content { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 20px; font-weight: 700; color: #1a1a1a; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { font-size: 15px; color: #555; transition: color 0.2s; }
.nav-links a:hover { color: #1677ff; }
.nav-cta { background: #1677ff; color: #fff !important; padding: 8px 20px; border-radius: 20px; font-size: 14px !important; }
.nav-cta:hover { background: #0958d9; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #333; border-radius: 2px; transition: 0.3s; }

/* Hero */
.hero { padding: 120px 0 80px; background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 50%, #f5f0ff 100%); }
.hero h1 { font-size: 42px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; color: #1a1a1a; }
.highlight { background: linear-gradient(135deg, #1677ff, #722ed1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 18px; color: #666; max-width: 520px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; }
.stat { text-align: center; }
.stat-num { display: block; font-size: 28px; font-weight: 800; color: #1677ff; }
.stat-label { font-size: 13px; color: #999; }

/* Buttons */
.btn { display: inline-block; padding: 14px 32px; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.2s; border: 2px solid transparent; }
.btn-primary { background: #1677ff; color: #fff; border-color: #1677ff; }
.btn-primary:hover { background: #0958d9; border-color: #0958d9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(22,119,255,0.3); }
.btn-outline { background: transparent; color: #1677ff; border-color: #1677ff; }
.btn-outline:hover { background: #1677ff; color: #fff; }
.btn-block { width: 100%; text-align: center; border: none; }

/* Section */
.section-title { font-size: 32px; font-weight: 800; text-align: center; margin-bottom: 12px; color: #1a1a1a; }
.section-subtitle { text-align: center; color: #888; font-size: 16px; margin-bottom: 48px; }

/* Services */
.services { padding: 80px 0; background: #fafafa; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: #fff; border-radius: 16px; padding: 32px 24px; text-align: center; transition: all 0.3s; border: 1px solid #f0f0f0; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.service-card.featured { border-color: #1677ff; box-shadow: 0 4px 20px rgba(22,119,255,0.1); }
.service-icon { font-size: 40px; margin-bottom: 16px; }
.service-card h3 { font-size: 20px; margin-bottom: 12px; color: #1a1a1a; }
.service-card p { font-size: 14px; color: #888; margin-bottom: 16px; line-height: 1.6; }
.service-price { font-size: 24px; font-weight: 700; color: #1677ff; margin-bottom: 8px; }
.service-tag { font-size: 12px; color: #999; background: #f5f5f5; padding: 4px 12px; border-radius: 12px; display: inline-block; }

/* Process */
.process { padding: 80px 0; }
.process-steps { display: flex; align-items: flex-start; justify-content: center; gap: 0; flex-wrap: wrap; }
.step { text-align: center; flex: 1; min-width: 160px; max-width: 220px; }
.step-num { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, #1677ff, #722ed1); color: #fff; font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13px; color: #888; }
.step-connector { width: 60px; height: 2px; background: #e0e0e0; margin-top: 24px; flex-shrink: 0; }

/* Pricing */
.pricing { padding: 80px 0; background: #fafafa; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card { background: #fff; border-radius: 16px; padding: 36px 28px; text-align: center; border: 1px solid #f0f0f0; position: relative; transition: all 0.3s; }
.pricing-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.pricing-card.popular { border-color: #1677ff; box-shadow: 0 4px 20px rgba(22,119,255,0.12); }
.popular-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, #1677ff, #722ed1); color: #fff; padding: 4px 16px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.pricing-card h3 { font-size: 20px; margin-bottom: 20px; }
.price { font-size: 36px; font-weight: 800; color: #1677ff; margin-bottom: 4px; }
.price span { font-size: 14px; font-weight: 400; color: #999; }
.price-note { font-size: 13px; color: #999; margin-bottom: 20px; }
.price-features { list-style: none; text-align: left; }
.price-features li { padding: 8px 0; border-bottom: 1px solid #f5f5f5; font-size: 14px; color: #555; }
.pricing-note { text-align: center; margin-top: 32px; color: #888; font-size: 14px; }

/* About */
.about { padding: 80px 0; }
.about-text h3 { font-size: 24px; margin-bottom: 16px; }
.about-text p { color: #666; margin-bottom: 16px; line-height: 1.8; }
.about-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.about-feature { display: flex; gap: 12px; }
.feature-icon { font-size: 28px; flex-shrink: 0; }
.about-feature strong { display: block; margin-bottom: 4px; font-size: 15px; }
.about-feature div { font-size: 13px; color: #888; }

/* Contact */
.contact { padding: 80px 0; background: #fafafa; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; }
.contact-form { background: #fff; padding: 32px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: #333; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #e0e0e0; border-radius: 8px; font-size: 15px; transition: border-color 0.2s; outline: none; font-family: inherit; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: #1677ff; box-shadow: 0 0 0 3px rgba(22,119,255,0.1); }
.form-note { text-align: center; font-size: 12px; color: #bbb; margin-top: 12px; }
.contact-info { display: flex; flex-direction: column; gap: 24px; padding-top: 8px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-icon { font-size: 28px; flex-shrink: 0; }
.contact-item strong { display: block; margin-bottom: 4px; }
.contact-item div { font-size: 14px; color: #666; }
.contact-item a { color: #1677ff; font-weight: 600; }

/* Footer */
.footer { background: #1a1a1a; color: #ccc; padding: 40px 0 20px; }
.footer-content { display: flex; justify-content: space-between; margin-bottom: 24px; flex-wrap: wrap; gap: 20px; }
.footer-logo { font-size: 18px; font-weight: 700; color: #fff; }
.footer-brand p { font-size: 13px; margin-top: 8px; color: #888; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: #999; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #333; padding-top: 20px; text-align: center; }
.footer-bottom p { font-size: 12px; color: #666; }
.footer-bottom a { color: #888; }

/* Float CTA */
.float-cta { position: fixed; bottom: 0; left: 0; right: 0; display: flex; z-index: 90; background: #fff; border-top: 1px solid #f0f0f0; padding: 10px 16px; gap: 12px; }
.float-btn { flex: 1; text-align: center; padding: 12px; border-radius: 8px; font-weight: 600; font-size: 15px; }
.float-phone { background: #ff6b35; color: #fff; }
.float-form { background: #1677ff; color: #fff; }

/* Success Message */
.form-success { text-align: center; padding: 40px 20px; }
.form-success .success-icon { font-size: 48px; margin-bottom: 16px; }
.form-success h3 { font-size: 20px; margin-bottom: 8px; }
.form-success p { color: #888; }

/* Mobile */
@media (max-width: 768px) {
    .nav-links { display: none; position: fixed; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 16px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
    .nav-links.active { display: flex; }
    .nav-toggle { display: flex; }
    .hero h1 { font-size: 28px; }
    .hero-desc { font-size: 15px; }
    .hero-stats { gap: 24px; }
    .stat-num { font-size: 22px; }
    .section-title { font-size: 24px; }
    .service-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; align-items: center; }
    .step-connector { width: 2px; height: 24px; margin: 0; }
    .about-features { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; text-align: center; }
    .hero { padding: 100px 0 60px; }
}
.logo-img { height: 36px; margin-right: 8px; vertical-align: middle; border-radius: 6px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.logo-text { vertical-align: middle; }
.footer-logo-img { height: 24px; vertical-align: middle; margin-right: 4px; border-radius: 4px; }