:root{
  --bg:#0b1020;--bg2:#10172a;--card:#151f36;--card2:#10182b;--text:#eef3ff;--muted:#a8b3cc;
  --line:#2a3859;--accent:#73e0b2;--accent2:#8fb9ff;--warn:#ffd27a;--bad:#ff8c8c;--good:#82e5b5;
  --shadow:0 18px 50px rgba(0,0,0,.28);--radius:20px;--max:1180px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,var(--bg),#0d1324 45%,#101629);color:var(--text);line-height:1.62}
a{color:var(--accent2);text-decoration-thickness:.08em;text-underline-offset:.18em}a:hover{color:#c6d9ff}.skip-link{position:absolute;left:-999px;top:auto}.skip-link:focus{left:16px;top:16px;z-index:999;background:#fff;color:#111;padding:10px 14px;border-radius:10px}.wrap{width:min(calc(100% - 32px),var(--max));margin-inline:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(11,16,32,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(143,185,255,.12)}.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;text-decoration:none;letter-spacing:-.02em}.brand-mark{width:34px;height:34px;border-radius:10px;border:1px solid rgba(115,224,178,.4);background:linear-gradient(145deg,rgba(115,224,178,.22),rgba(143,185,255,.16));display:grid;place-items:center;font-size:18px}.nav-links{display:flex;gap:18px;align-items:center}.nav-links a{color:var(--muted);text-decoration:none;font-size:.95rem}.nav-links a:hover{color:var(--text)}.nav-cta{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:#07150f!important;font-weight:800;padding:9px 14px;border-radius:12px}.menu-btn{display:none;background:transparent;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 10px}.hero{padding:70px 0 34px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:800;font-size:.82rem;letter-spacing:.09em;text-transform:uppercase}.hero h1{font-size:clamp(2.35rem,6vw,5.3rem);line-height:.99;letter-spacing:-.055em;margin:12px 0 20px;max-width:980px}.hero p{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:820px}.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.badge{border:1px solid var(--line);background:rgba(255,255,255,.03);padding:7px 10px;border-radius:999px;font-size:.86rem;color:#ced8ef}.layout{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:24px;align-items:start}.panel{background:linear-gradient(180deg,rgba(21,31,54,.95),rgba(16,24,43,.96));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.panel-pad{padding:24px}.panel h2,.panel h3{margin-top:0;letter-spacing:-.02em}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-weight:700;font-size:.92rem}.hint{font-size:.78rem;color:var(--muted)}input,select,button{font:inherit}input,select{width:100%;background:#0c1427;color:var(--text);border:1px solid #344667;border-radius:11px;padding:11px 12px;outline:none}input:focus,select:focus{border-color:var(--accent2);box-shadow:0 0 0 3px rgba(143,185,255,.16)}.unit-toggle{display:flex;gap:8px}.unit-toggle button{flex:1}.btn{border:0;border-radius:12px;padding:11px 15px;font-weight:800;cursor:pointer;transition:transform .16s ease,opacity .16s ease}.btn:hover{transform:translateY(-1px)}.btn:active{transform:none}.btn-primary{background:linear-gradient(135deg,var(--accent),#7bd9ff);color:#07120d}.btn-secondary{background:#1c2a48;color:var(--text);border:1px solid #395077}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 18px}.preset{padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:#111a2f;color:#cbd6ed;cursor:pointer}.preset:hover{border-color:#4f6b9e}.result-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.status{font-weight:900;font-size:1.15rem;letter-spacing:.03em}.status.good{color:var(--good)}.status.tight{color:var(--warn)}.status.bad{color:var(--bad)}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}.metric{background:#0d1528;border:1px solid #273858;border-radius:14px;padding:13px}.metric .k{color:var(--muted);font-size:.78rem}.metric .v{font-weight:900;font-size:1.15rem;margin-top:3px}.callout{border:1px solid #3a4e70;background:rgba(143,185,255,.07);padding:14px 15px;border-radius:14px;color:#dbe6fb}.callout.warn{border-color:#705d37;background:rgba(255,210,122,.07)}.canvas-wrap{position:relative;overflow:hidden;border-radius:16px;background:#09111f;border:1px solid #263957;min-height:360px}.canvas-wrap canvas{display:block;width:100%;height:420px}.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.78rem;color:var(--muted);margin-top:10px}.dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}.section{padding:64px 0}.section h2{font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.04em;margin:0 0 14px}.section-intro{color:var(--muted);max-width:760px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}.card{background:rgba(19,28,49,.72);border:1px solid var(--line);border-radius:17px;padding:20px}.card h3{margin:.15rem 0 .6rem}.card p{color:var(--muted);margin:.3rem 0}.steps{counter-reset:step;display:grid;gap:12px;margin-top:24px}.step{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;padding:15px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.025)}.step::before{counter-increment:step;content:counter(step);width:34px;height:34px;border-radius:10px;background:rgba(115,224,178,.15);border:1px solid rgba(115,224,178,.35);display:grid;place-items:center;color:var(--accent);font-weight:900}.faq{display:grid;gap:10px;margin-top:24px}.faq details{background:#111a2e;border:1px solid var(--line);border-radius:14px;padding:14px 16px}.faq summary{cursor:pointer;font-weight:800}.faq p{color:var(--muted)}.prose{max-width:820px}.prose h1{font-size:clamp(2.2rem,5vw,4.2rem);line-height:1.02;letter-spacing:-.045em}.prose h2{margin-top:2.2rem}.prose h3{margin-top:1.7rem}.prose p,.prose li{color:#c5d0e6}.prose strong{color:var(--text)}.prose table{width:100%;border-collapse:collapse;margin:1.4rem 0}.prose th,.prose td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}.prose th{color:var(--text)}.breadcrumb{font-size:.86rem;color:var(--muted);margin-top:28px}.breadcrumb a{color:var(--muted)}.mini-cta{margin:32px 0;background:linear-gradient(135deg,rgba(115,224,178,.12),rgba(143,185,255,.1));border:1px solid #355473;border-radius:18px;padding:20px}.site-footer{border-top:1px solid var(--line);padding:34px 0 50px;color:var(--muted);margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:28px}.footer-links{display:grid;gap:8px}.footer-links a{color:var(--muted);text-decoration:none}.footer-links a:hover{color:var(--text)}.fine{font-size:.82rem;color:#8d9ab6}.notice{font-size:.84rem;color:#aebbd3;border-left:3px solid var(--warn);padding-left:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.layout,.cards,.footer-grid{grid-template-columns:1fr}.hero{padding-top:48px}.nav-links{position:absolute;left:16px;right:16px;top:62px;display:none;flex-direction:column;align-items:stretch;background:#0d1426;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:block}.metric-grid{grid-template-columns:1fr 1fr}.canvas-wrap canvas{height:360px}}
@media(max-width:560px){.wrap{width:min(calc(100% - 20px),var(--max))}.hero h1{font-size:2.7rem}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.metric-grid{grid-template-columns:1fr}.panel-pad{padding:17px}.actions .btn{width:100%}.canvas-wrap canvas{height:315px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.site-header,.site-footer,.hero-badges,.actions,.preset-row,.nav,.section:not(.print-keep){display:none!important}body{background:#fff;color:#111}.panel{box-shadow:none;border:1px solid #aaa;background:#fff}.panel *{color:#111!important}.canvas-wrap{background:#fff;border:1px solid #aaa}.layout{display:block}.layout>.panel:first-child{display:none}.wrap{width:100%}}