:root{--ink:#1d1d1f;--muted:#5e5e63;--accent:#0071e3;--accent2:#5e5ce6;--bg:#fbfbfd;--gray:#f5f5f7;--line:#e3e3e8;--r:22px;--sh:0 1px 2px rgba(0,0,0,.04),0 8px 28px rgba(0,0,0,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;font-size:17px}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 22px}
h1,h2,h3{letter-spacing:-.025em;line-height:1.08;font-weight:700}
h2{font-size:clamp(1.8rem,4vw,2.8rem);margin:0 0 .6rem}h3{font-size:1.3rem;margin:.8rem 0 .4rem;letter-spacing:-.015em}
main.wrap>h2{margin-top:2.5rem}main.wrap>p,main.wrap>ul,main.wrap>ol{max-width:720px;color:#333336}
.top{position:sticky;top:0;z-index:50;background:rgba(251,251,253,.72);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.08)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:52px}
.logo{color:var(--ink);font-weight:700;font-size:1.15rem;letter-spacing:-.02em}.logo span{color:var(--accent)}.logo:hover{text-decoration:none}
nav a{color:#424245;margin-left:1.4rem;font-size:.82rem}nav a:hover{color:var(--ink);text-decoration:none}
.menu{display:none;background:none;border:0;color:var(--ink);font-size:1.3rem;cursor:pointer}
.ftc{margin-top:14px;font-size:.8rem;color:var(--muted);background:var(--gray);border-radius:14px;padding:.7rem 1rem;max-width:1040px}
.ftc.wrap{max-width:996px}
.hero{padding:clamp(3rem,9vw,6.5rem) 0 clamp(2rem,5vw,3.5rem);text-align:center}
.hero h1{font-size:clamp(2.4rem,7vw,4.8rem);letter-spacing:-.045em;line-height:1.03;margin:0 auto .9rem;max-width:900px;background:linear-gradient(100deg,#1d1d1f 20%,#0071e3 60%,#5e5ce6 95%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:clamp(1.05rem,2vw,1.35rem);max-width:680px;margin:0 auto 1.8rem;line-height:1.45}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;color:var(--accent);letter-spacing:.02em;margin-bottom:1rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:.75rem 1.4rem;border-radius:980px;font-weight:500;font-size:1rem;transition:background .2s,transform .2s;margin:.25rem}
.btn:hover{background:#0077ed;text-decoration:none;transform:translateY(-1px)}
.btn.alt{background:transparent;color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.btn.alt:hover{background:rgba(0,113,227,.07)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:20px;margin:1.5rem 0}
.card{background:#fff;border-radius:var(--r);padding:2rem 1.8rem;box-shadow:var(--sh);transition:transform .35s,box-shadow .35s}
.card:hover{transform:translateY(-4px);box-shadow:0 2px 4px rgba(0,0,0,.04),0 18px 40px rgba(0,0,0,.09)}
.card p{color:var(--muted);margin:.3rem 0 1rem}.card a{font-weight:500}
.ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#0071e3,#5e5ce6);color:#fff}
.ico svg{width:22px;height:22px}
.band{padding:clamp(3rem,8vw,5.5rem) 0}.band.gray{background:var(--gray)}
.band.dark{background:#000;color:#f5f5f7}.band.dark p{color:#a1a1a6}.band.dark a{color:#2997ff}
.band .wrap>p{max-width:720px;font-size:1.1rem}.center{text-align:center}.center p{margin-left:auto;margin-right:auto}
.tbl{overflow-x:auto;background:#fff;border-radius:var(--r);box-shadow:var(--sh);margin:1.5rem 0;padding:.4rem}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{padding:1rem 1.1rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}tbody tr:hover td{background:#fafafc}
.src{font-size:.82rem;color:var(--muted)}
.calc{background:#fff;border-radius:28px;padding:clamp(1.4rem,4vw,2.6rem);box-shadow:var(--sh);display:grid;grid-template-columns:1fr 1fr;gap:1.1rem 1.6rem;margin-bottom:2rem}
.calc .field{display:flex;flex-direction:column}
.calc label{font-weight:500;font-size:.9rem;margin-bottom:.4rem;color:#333336}
.calc input{width:100%;padding:.85rem 1rem;border:1px solid var(--line);border-radius:12px;font-size:1.1rem;background:var(--gray);font-family:inherit;transition:border .2s,box-shadow .2s}
.calc input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px rgba(0,113,227,.18);background:#fff}
.result{grid-column:1/-1;margin-top:.8rem;padding:2rem;border-radius:22px;background:linear-gradient(135deg,#0b0b0f,#1c1c28);color:#f5f5f7;text-align:center}
.result .big{display:block;font-size:clamp(2.8rem,8vw,4.6rem);font-weight:700;letter-spacing:-.04em;line-height:1.05;background:linear-gradient(100deg,#2997ff,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;margin:.3rem 0 1rem}
.result .lbl{font-size:.85rem;color:#a1a1a6;text-transform:uppercase;letter-spacing:.08em}
.result .stats{display:flex;justify-content:center;gap:2.5rem;flex-wrap:wrap;margin-bottom:1rem}.result .stats strong{display:block;font-size:1.5rem;color:#fff}
.result .src{color:#8e8e93}
footer{background:var(--gray);margin-top:0;padding:2rem 0;font-size:.8rem;color:var(--muted);border-top:1px solid var(--line)}
main.wrap{padding-bottom:3rem}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}.card,.btn{transition:none}}
@media(max-width:760px){.menu{display:block}nav{display:none;position:absolute;top:52px;left:0;right:0;background:rgba(251,251,253,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:.5rem 22px 1rem;border-bottom:1px solid var(--line)}body.open nav{display:block}nav a{display:block;margin:0;padding:.7rem 0;font-size:1rem;border-bottom:1px solid var(--line)}.calc{grid-template-columns:1fr}}
body{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;overflow-x:hidden}main{flex:1 0 auto}footer{margin-top:auto;margin-bottom:0;flex-shrink:0}footer p:last-child{margin-bottom:0}