* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: #1a1a1a; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.header { background: #fff; border-bottom: 1px solid #e5e5e5; position: sticky; top: 0; z-index: 100; }
.header .container { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; padding-bottom: 20px; }
.logo { font-size: 24px; font-weight: 700; color: #0066FF; }
.nav { display: flex; gap: 32px; align-items: center; }
.nav a { font-size: 15px; font-weight: 500; color: #666; transition: color 0.2s; }
.nav a:hover { color: #0066FF; }
.btn-download-header { background: #0066FF; color: #fff; padding: 10px 20px; border-radius: 8px; font-weight: 600; }
.btn-download-header:hover { background: #0052CC; }
.hero { padding: 80px 0 120px; background: linear-gradient(180deg, #F8FAFC 0%, #fff 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero h1 { font-size: 56px; font-weight: 700; line-height: 1.1; margin-bottom: 24px; letter-spacing: -0.02em; }
.hero-subtitle { font-size: 20px; color: #666; margin-bottom: 40px; line-height: 1.6; }
.hero-cta { display: flex; flex-direction: column; gap: 12px; margin-bottom: 48px; }
.btn-primary { display: inline-block; background: #0066FF; color: #fff; padding: 16px 32px; border-radius: 10px; font-size: 16px; font-weight: 600; transition: all 0.2s; box-shadow: 0 4px 12px rgba(0,102,255,0.2); }
.btn-primary:hover { background: #0052CC; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,102,255,0.3); }
.hero-meta { font-size: 14px; color: #999; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.stat-number { font-size: 36px; font-weight: 700; color: #0066FF; margin-bottom: 4px; }
.stat-label { font-size: 14px; color: #666; }
.app-mockup { width: 100%; border-radius: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.showcase { padding: 100px 0; }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 80px; }
.section-header h2 { font-size: 42px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.section-header p { font-size: 18px; color: #666; }
.showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.showcase-card img { width: 100%; border-radius: 12px; margin-bottom: 24px; box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.showcase-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.showcase-card p { color: #666; font-size: 15px; line-height: 1.6; }
.integration { padding: 100px 0; background: #F8FAFC; }
.integration-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.integration-visual img { border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.integration h2 { font-size: 38px; font-weight: 700; margin-bottom: 20px; letter-spacing: -0.02em; }
.integration-intro { font-size: 17px; color: #666; margin-bottom: 32px; line-height: 1.7; }
.integration-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.integration-list li { font-size: 15px; color: #333; padding-left: 24px; position: relative; }
.integration-list li:before { content: '✓'; position: absolute; left: 0; color: #0066FF; font-weight: 700; }
.link-arrow { color: #0066FF; font-weight: 600; font-size: 15px; }
.link-arrow:hover { text-decoration: underline; }
.testimonial { padding: 100px 0; }
.quote { max-width: 900px; margin: 0 auto; text-align: center; }
.quote p { font-size: 26px; line-height: 1.6; color: #1a1a1a; margin-bottom: 32px; font-weight: 500; }
.quote cite { font-style: normal; display: flex; flex-direction: column; gap: 4px; }
.quote strong { font-weight: 600; font-size: 16px; }
.quote span { color: #666; font-size: 14px; }
.cta-final { padding: 100px 0; background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%); color: #fff; text-align: center; }
.cta-content h2 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.cta-content p { font-size: 18px; margin-bottom: 40px; opacity: 0.9; }
.btn-primary-large { display: inline-block; background: #fff; color: #0066FF; padding: 18px 48px; border-radius: 12px; font-size: 18px; font-weight: 600; transition: all 0.2s; box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.btn-primary-large:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.2); }
.footer { background: #1a1a1a; color: #fff; padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 3fr; gap: 80px; margin-bottom: 40px; }
.footer-brand p { color: #999; margin-top: 16px; font-size: 14px; line-height: 1.6; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 16px; color: #fff; }
.footer-col a { display: block; color: #999; font-size: 14px; margin-bottom: 10px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #333; padding-top: 24px; text-align: center; }
.footer-bottom p { color: #666; font-size: 13px; }
.page-hero { padding: 80px 0 60px; text-align: center; background: linear-gradient(180deg, #F8FAFC 0%, #fff 100%); }
.page-hero h1 { font-size: 48px; font-weight: 700; margin-bottom: 20px; letter-spacing: -0.02em; }
.page-subtitle { font-size: 20px; color: #666; max-width: 700px; margin: 0 auto; }
.features-detail { padding: 80px 0; }
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-bottom: 120px; }
.feature-block.reverse { direction: rtl; }
.feature-block.reverse > * { direction: ltr; }
.feature-visual img { border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.feature-text h2 { font-size: 36px; font-weight: 700; margin-bottom: 20px; letter-spacing: -0.02em; }
.feature-text > p { font-size: 17px; color: #666; margin-bottom: 32px; line-height: 1.7; }
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-list li { font-size: 15px; color: #333; padding-left: 24px; position: relative; }
.feature-list li:before { content: '✓'; position: absolute; left: 0; color: #0066FF; font-weight: 700; }
.tech-stack { padding: 80px 0; background: #F8FAFC; }
.tech-stack h2 { text-align: center; font-size: 38px; font-weight: 700; margin-bottom: 16px; }
.section-intro { text-align: center; font-size: 17px; color: #666; max-width: 700px; margin: 0 auto 60px; line-height: 1.7; }
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.tech-card { background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.tech-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.tech-card p { font-size: 14px; color: #666; line-height: 1.6; }
.download-hero { padding: 80px 0; background: linear-gradient(180deg, #F8FAFC 0%, #fff 100%); }
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.download-content h1 { font-size: 48px; font-weight: 700; margin-bottom: 20px; letter-spacing: -0.02em; }
.download-subtitle { font-size: 18px; color: #666; margin-bottom: 40px; line-height: 1.6; }
.download-buttons { display: flex; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.btn-store { display: flex; align-items: center; gap: 12px; background: #1a1a1a; color: #fff; padding: 14px 24px; border-radius: 10px; font-size: 14px; transition: all 0.2s; box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn-store:hover { background: #333; transform: translateY(-2px); }
.btn-store svg { flex-shrink: 0; }
.btn-store div { display: flex; flex-direction: column; align-items: flex-start; }
.btn-store span { font-size: 11px; opacity: 0.7; }
.btn-store strong { font-size: 16px; font-weight: 600; }
.download-meta { display: flex; gap: 32px; flex-wrap: wrap; }
.meta-item { font-size: 14px; color: #666; }
.meta-item strong { color: #0066FF; font-weight: 700; }
.download-visual img { border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.download-features { padding: 100px 0; }
.download-features h2 { text-align: center; font-size: 38px; font-weight: 700; margin-bottom: 60px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.feature-item { background: #F8FAFC; padding: 40px; border-radius: 12px; }
.feature-item h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.feature-item > p { color: #666; font-size: 14px; margin-bottom: 24px; }
.feature-item ul { display: flex; flex-direction: column; gap: 10px; }
.feature-item li { font-size: 14px; color: #333; padding-left: 20px; position: relative; }
.feature-item li:before { content: '✓'; position: absolute; left: 0; color: #0066FF; font-weight: 700; font-size: 12px; }
.download-faq { padding: 100px 0; background: #F8FAFC; }
.download-faq h2 { text-align: center; font-size: 38px; font-weight: 700; margin-bottom: 60px; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.faq-item h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.faq-item p { color: #666; font-size: 15px; line-height: 1.6; }
@media (max-width: 768px) {
.hero-grid, .integration-layout, .download-grid { grid-template-columns: 1fr; gap: 40px; }
.showcase-grid, .tech-grid, .feature-grid, .faq-grid { grid-template-columns: 1fr; }
.hero h1, .page-hero h1, .download-content h1 { font-size: 36px; }
.stats { grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stat-number { font-size: 24px; }
.feature-block { grid-template-columns: 1fr; margin-bottom: 60px; }
.footer-grid { grid-template-columns: 1fr; gap: 40px; }
.nav { gap: 16px; }
}