:root{--primary: #4a90d9;--primary-light: #e8f0fe;--bg: #f8faff;--text: #1a2a3a;--text-secondary: #5a6a7a;--card: #ffffff;--border: #d0dce8;--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100dvh}#root{display:flex;flex-direction:column;min-height:100dvh}header{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.header-nav{max-width:720px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}.header-brand{font-size:18px;font-weight:700;color:var(--primary);text-decoration:none}.header-links{display:flex;align-items:center;gap:16px}.header-links a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color .15s}.header-links a:hover{color:var(--primary)}.lang-btn{background:var(--primary-light);color:var(--primary);border:none;padding:4px 12px;border-radius:20px;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s}.lang-btn:hover{background:#d0e2f7}main{flex:1;max-width:720px;margin:0 auto;padding:40px 20px;width:100%}.home{text-align:center;padding-top:80px}.app-icon{width:100px;height:100px;border-radius:22px;box-shadow:0 4px 20px #4a90d933;margin-bottom:24px}.home h1{font-size:32px;color:var(--primary);margin-bottom:8px}.tagline{color:var(--text-secondary);font-size:16px;margin-bottom:32px}.appstore-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:24px;background:#000;color:#fff;text-decoration:none;font-weight:600;font-size:15px;margin-bottom:20px;transition:background .15s,transform .1s}.appstore-btn:hover{background:#333;transform:translateY(-1px)}.home-nav{display:flex;gap:12px;justify-content:center}.home-nav a{display:inline-block;padding:10px 28px;border-radius:24px;background:var(--primary);color:#fff;text-decoration:none;font-weight:600;font-size:15px;transition:background .15s,transform .1s}.home-nav a:hover{background:#3a7bc8;transform:translateY(-1px)}.legal{max-width:640px}.legal h1{font-size:28px;color:var(--primary);margin-bottom:4px}.legal .effective{color:var(--text-secondary);font-size:13px;margin-bottom:24px}.legal h2{font-size:18px;margin-top:28px;margin-bottom:8px;color:var(--text)}.legal p{color:var(--text-secondary);margin-bottom:12px}.legal ul{margin:0 0 12px 20px;color:var(--text-secondary)}.legal li{margin-bottom:6px}.legal a{color:var(--primary);text-decoration:none}.legal a:hover{text-decoration:underline}.faq{display:flex;flex-direction:column;gap:8px}.faq details{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px}.faq summary{cursor:pointer;font-weight:600;color:var(--text);list-style:none}.faq summary:before{content:"＋";margin-right:8px;color:var(--primary)}.faq details[open] summary:before{content:"−"}.faq details p{margin-top:8px;color:var(--text-secondary)}footer{text-align:center;padding:20px;color:var(--text-secondary);font-size:13px;border-top:1px solid var(--border)}@media(max-width:480px){.home{padding-top:48px}.home h1{font-size:26px}.home-nav{flex-direction:column;align-items:center}}