:root{--green: #25d366;--green-dark: #128c7e;--ink: #0e1513;--muted: #5b6b66;--bg: #f4f6f5;--card: #ffffff;--radius: 16px}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink)}a{color:inherit}.container{max-width:1080px;margin:0 auto;padding:0 20px}.nav{position:sticky;top:0;z-index:10;background:#ffffffe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid #e5e9e7}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;text-decoration:none}.brand-dot{width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px}.nav-links{display:flex;gap:18px;align-items:center}.nav-links a{text-decoration:none;font-weight:600;color:var(--muted)}.nav-links a:hover{color:var(--ink)}.btn{display:inline-block;border:none;cursor:pointer;text-decoration:none;font-weight:700;padding:12px 22px;border-radius:999px;font-size:15px}.btn-green{background:var(--green);color:#fff}.btn-green:hover{background:var(--green-dark)}.btn-ghost{background:#fff;color:var(--ink);border:1px solid #dfe5e2}.btn:disabled{opacity:.6;cursor:not-allowed}.hero{background:linear-gradient(135deg,#075e54,#128c7e 60%,#25d366);color:#fff;padding:90px 0 70px}.hero h1{font-size:46px;margin:0 0 14px;line-height:1.1}.hero p{font-size:18px;opacity:.92;max-width:620px}.hero-cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}.hero code{background:#00000040;padding:2px 8px;border-radius:6px}.section{padding:60px 0}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}.card{background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:0 6px 24px #0000000f}.card h3{margin:0 0 8px}.card p{color:var(--muted);margin:0}.card .ico{font-size:30px}h2.section-title{font-size:32px;margin:0 0 8px}p.section-sub{color:var(--muted);margin:0 0 28px}.form-card{background:var(--card);border-radius:var(--radius);padding:32px;max-width:460px;margin:60px auto;box-shadow:0 6px 24px #0000000f}.form-card h2{margin:0 0 6px}.form-card p{color:var(--muted)}label{display:block;font-weight:600;font-size:14px;margin:14px 0 6px}input,select,textarea{width:100%;padding:12px 14px;border:1px solid #dfe5e2;border-radius:10px;font-size:15px}input:focus,select:focus,textarea:focus{outline:2px solid var(--green);border-color:var(--green)}.alert{border-radius:10px;padding:12px 14px;margin-top:14px;font-size:14px}.alert-error{background:#fee2e2;color:#991b1b}.alert-ok{background:#dcfce7;color:#166534}pre.code{background:#0e1513;color:#d7f5e3;border-radius:12px;padding:18px;overflow-x:auto;font-size:13.5px;line-height:1.55}.keybox{background:#fff8e1;border:1px dashed #b45309;border-radius:10px;padding:12px 14px;word-break:break-all;font-family:monospace}table.keys{width:100%;border-collapse:collapse;font-size:14px}table.keys th,table.keys td{text-align:left;padding:10px 8px;border-bottom:1px solid #eef1ef}.badge{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;background:#dcfce7;color:#166534}.badge.off{background:#fee2e2;color:#991b1b}.footer{padding:30px 0 50px;color:var(--muted);font-size:14px;text-align:center}.steps{counter-reset:s;display:grid;gap:14px}.step{background:var(--card);border-radius:var(--radius);padding:20px 20px 20px 64px;position:relative;box-shadow:0 6px 24px #0000000f}.step:before{counter-increment:s;content:counter(s);position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}@media (max-width: 640px){.hero h1{font-size:34px}}