:root{--bg: #f6f7f9;--card-bg: #ffffff;--text: #0f172a;--muted: #475569;--primary: #2563eb;--primary-600: #1d4ed8;--ring: rgba(37, 99, 235, .25);--shadow: 0 10px 25px rgba(2, 6, 23, .08), 0 2px 8px rgba(2, 6, 23, .06)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial,"Apple Color Emoji","Segoe UI Emoji";color:var(--text);background:var(--bg)}.page{min-height:100%;display:grid;grid-template-rows:auto 1fr auto}.container{max-width:1120px;margin:0 auto;padding:0 16px}.header{background:#fff;border-bottom:1px solid #e2e8f0}.header .header-content{display:flex;justify-content:space-between;align-items:center;padding:16px 0}.header .brand{font-weight:700;display:flex;align-items:center;gap:10px}.header .brand-name{font-weight:800;text-decoration:none;color:var(--text);transition:color .15s ease-in-out}.header .brand-name:hover{color:var(--primary)}.header .sep{color:#cbd5e1}.header .brand-sub{font-weight:600;color:#475569}.language-switcher{display:flex;gap:8px}.lang-btn{background:transparent;border:2px solid #e2e8f0;color:var(--muted);padding:6px 12px;border-radius:8px;font-weight:600;font-size:13px;cursor:pointer;transition:all .15s ease-in-out}.lang-btn:hover{border-color:var(--primary);color:var(--primary)}.lang-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.footer{background:#fff;border-top:1px solid #e2e8f0;color:var(--muted)}.footer .container{padding:16px 0}.main{padding:40px 0}.main .container{display:flex;flex-direction:column;gap:24px}.card{width:100%;background:var(--card-bg);border-radius:16px;padding:28px;box-shadow:var(--shadow)}.title{margin:0 0 6px;font-size:22px}.subtitle{margin:0 0 18px;color:var(--muted)}.form{display:grid;gap:12px;grid-template-columns:1fr auto}.input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid #e2e8f0;outline:none;font:inherit;background:#fafafa}.input-single{height:44px;line-height:44px}.form .button{align-self:stretch;height:44px}.input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--ring);background:#fff}.button{align-self:start;background:var(--primary);color:#fff;border:none;padding:10px 16px;border-radius:10px;font-weight:600;cursor:pointer;transition:background .15s ease-in-out,transform .02s ease-in-out,box-shadow .15s ease-in-out;box-shadow:0 6px 14px #2563eb40}.button:hover{background:var(--primary-600)}.button:active{transform:translateY(1px)}.button:disabled{opacity:.6;cursor:not-allowed;box-shadow:none}.result{margin-top:8px;color:var(--muted)}.result a{color:var(--primary);text-decoration:none}.result a:hover{text-decoration:underline}.card-seo h2{margin-top:32px;margin-bottom:16px;font-size:20px;border-top:1px solid #e2e8f0;padding-top:32px}.card-seo h2:first-of-type{margin-top:0;border-top:none;padding-top:0}.card h3{margin-top:20px;margin-bottom:10px;font-size:16px}.card p{line-height:1.7;color:var(--muted);margin-bottom:14px}.card ul,.card ol{margin:12px 0;padding-left:24px}.card li{margin:8px 0;line-height:1.6;color:var(--muted)}.card li strong{color:var(--text)}