:root{color-scheme:light;--bg:#f6f7fb;--ink:#172033;--muted:#607089;--card:#fff;--line:#d9e3ef;--primary:#0f766e;--primary-dark:#115e59;--accent:#f59e0b;--soft:#ecfeff}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:linear-gradient(180deg,#eefdfa 0,#f6f7fb 380px);color:var(--ink)}.hero{padding:56px 20px 34px;max-width:1120px;margin:0 auto}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:850;color:var(--primary);margin:0 0 10px}.hero h1{font-size:clamp(2.2rem,6vw,4.7rem);line-height:.98;margin:0 0 18px;max-width:960px}.lead{font-size:1.18rem;line-height:1.65;color:var(--muted);max-width:850px;margin:0}main{max-width:1120px;margin:0 auto;padding:0 20px 46px}.promo,.tool,.result,.note{background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 20px 55px rgba(22,32,51,.09);margin-bottom:22px}.promo{display:grid;grid-template-columns:1fr minmax(280px,460px);gap:24px;align-items:center;background:linear-gradient(135deg,#fff,#ecfeff)}.promo h2,.tool h2,.result h2{margin:0 0 10px;font-size:1.55rem}.promo p:not(.eyebrow),.note p{color:var(--muted);line-height:1.6}.video-wrap{position:relative;width:100%;aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#0f172a;box-shadow:0 16px 32px rgba(15,23,42,.18)}.video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.tool-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:20px}.grid{display:grid;gap:16px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.three{grid-template-columns:repeat(3,minmax(0,1fr))}label,fieldset{display:block;font-weight:800;color:#243049}input,textarea,select{width:100%;margin-top:8px;border:1px solid #cbd5e1;border-radius:16px;padding:12px 14px;font:inherit;color:var(--ink);background:#fff}textarea{resize:vertical;min-height:105px}fieldset{border:1px solid var(--line);border-radius:20px;padding:16px;margin:18px 0;display:grid;gap:10px}fieldset label{font-weight:650;color:var(--muted)}fieldset input{width:auto;margin:0 8px 0 0}.primary,.secondary{border:0;border-radius:999px;padding:12px 18px;font-weight:850;cursor:pointer}.primary{background:var(--primary);color:#fff;box-shadow:0 12px 22px rgba(15,118,110,.22)}.primary:hover{background:var(--primary-dark)}.secondary{background:#e2e8f0;color:#172033}pre{white-space:pre-wrap;background:#0f172a;color:#e2f3f1;border-radius:20px;padding:20px;line-height:1.55;min-height:220px;overflow:auto}.hint{font-size:.92rem;color:var(--muted);font-weight:650}footer{max-width:1120px;margin:0 auto;padding:0 20px 42px;color:var(--muted)}footer a{color:var(--primary);font-weight:850}@media(max-width:800px){.promo,.two,.three{grid-template-columns:1fr}.tool-head{flex-direction:column}.hero{padding-top:36px}}