*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#0f172a;color:#e2e8f0;line-height:1.6}
a{color:#60a5fa;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1000px;margin:0 auto;padding:20px}
header{background:#1e293b;padding:16px 0;border-bottom:1px solid #334155;position:sticky;top:0;z-index:100}
header .container{display:flex;justify-content:space-between;align-items:center}
header nav a{margin-left:20px;font-size:14px;color:#94a3b8}
header nav a:hover{color:#60a5fa}
.logo{font-size:20px;font-weight:700;color:#60a5fa}
.hero{text-align:center;padding:80px 0 60px}
.hero h1{font-size:48px;font-weight:800;margin-bottom:16px;background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:18px;color:#94a3b8;max-width:600px;margin:0 auto 32px}
.btn{display:inline-block;padding:12px 32px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:#3b82f6;color:#fff}
.btn-primary:hover{background:#2563eb;transform:translateY(-1px)}
.btn-outline{background:transparent;color:#60a5fa;border:1px solid #60a5fa;margin-left:12px}
.btn-outline:hover{background:#1e3a5f}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin:60px 0}
.feature{background:#1e293b;border-radius:12px;padding:32px;border:1px solid #334155}
.feature h3{font-size:18px;margin-bottom:8px;color:#f1f5f9}
.feature p{font-size:14px;color:#94a3b8}
.feature .icon{font-size:32px;margin-bottom:12px}
.page-title{text-align:center;padding:60px 0 40px}
.page-title h1{font-size:36px;font-weight:800;margin-bottom:12px}
.page-title p{color:#94a3b8;font-size:16px}
.card{background:#1e293b;border-radius:12px;padding:32px;border:1px solid #334155;max-width:600px;margin:0 auto}
.card-wide{max-width:800px}
.content-section{background:#1e293b;border-radius:12px;padding:40px;border:1px solid #334155}
.content-section h2{font-size:22px;margin:32px 0 12px;color:#f1f5f9}
.content-section h2:first-child{margin-top:0}
.content-section h3{font-size:16px;margin:20px 0 8px;color:#cbd5e1}
.content-section p{margin:8px 0;color:#94a3b8;font-size:14px}
.content-section ul{margin:8px 0 8px 20px;color:#94a3b8;font-size:14px}
.content-section ul li{margin:4px 0}
.content-section code{background:#0f172a;padding:2px 6px;border-radius:4px;font-size:13px;color:#60a5fa}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:#cbd5e1}
.form-group input,.form-group textarea{width:100%;padding:10px 14px;border-radius:8px;border:1px solid #475569;background:#0f172a;color:#e2e8f0;font-size:15px;outline:none;transition:border .2s}
.form-group input:focus,.form-group textarea:focus{border-color:#60a5fa}
.form-group textarea{resize:vertical;min-height:120px}
.btn-primary:disabled{opacity:.5;cursor:not-allowed}
.result{margin-top:24px;padding:20px;border-radius:8px;display:none}
.result.success{display:block;background:#052e16;border:1px solid #22c55e}
.result.error{display:block;background:#450a0a;border:1px solid #ef4444}
.result h3{font-size:16px;margin-bottom:12px}
.result.success h3{color:#22c55e}
.result.error h3{color:#ef4444}
.result .row{display:flex;padding:6px 0;font-size:14px;border-bottom:1px solid rgba(255,255,255,.05)}
.result .row:last-child{border-bottom:none}
.result .label{width:120px;color:#94a3b8;flex-shrink:0}
.result .value{color:#e2e8f0;word-break:break-all}
.copy-btn{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:4px;font-size:12px;cursor:pointer;border:1px solid #475569;background:transparent;color:#94a3b8;transition:all .2s;margin-left:8px}
.copy-btn:hover{background:#334155;color:#e2e8f0}
.copy-btn.copied{background:#22c55e;color:#fff;border-color:#22c55e}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid #475569;border-top-color:#60a5fa;border-radius:50%;animation:spin .6s linear infinite;margin-right:8px;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}
.tabs{display:flex;gap:8px;margin-bottom:24px}
.tab{padding:8px 20px;border-radius:6px;font-size:14px;cursor:pointer;border:1px solid #334155;background:transparent;color:#94a3b8;transition:all .2s}
.tab.active{background:#1e3a5f;border-color:#60a5fa;color:#60a5fa}
.tab-content{display:none}
.tab-content.active{display:block}
footer{text-align:center;padding:40px 0;border-top:1px solid #334155;margin-top:60px}
footer nav a{margin:0 12px;font-size:13px;color:#64748b}
footer p{color:#475569;font-size:12px;margin-top:12px}