:root{--bg:#f2f8f5;--card:rgba(255,255,255,.72);--ink:#0b1f1a;--muted:#5d7871;--line:rgba(11,61,46,.12);--green:#0fa968;--deep:#067a4b;--mint:#e3f6ec;--dark:#0b1f1a;--radius:20px}
@media (prefers-color-scheme:dark){:root{--bg:#07130f;--card:rgba(20,40,32,.7);--ink:#e8f3ee;--muted:#8fa89f;--line:rgba(255,255,255,.1);--mint:#0f2a20}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 "Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(900px 500px at 85% -10%,rgba(20,201,138,.22),transparent 60%),radial-gradient(700px 480px at -10% 30%,rgba(15,169,104,.14),transparent 60%)}
a{color:var(--deep)}@media (prefers-color-scheme:dark){a{color:#47d99c}}
img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;z-index:20;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink);text-decoration:none}
.nav nav{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.nav nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:14.5px;padding:8px 12px;border-radius:999px}
.nav nav a:hover,.nav nav a.on{color:var(--ink);background:rgba(15,169,104,.12)}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:13px 24px;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(135deg,var(--deep),var(--green));color:#fff!important;box-shadow:0 10px 26px rgba(15,169,104,.32)}
.btn.primary:hover{box-shadow:0 14px 32px rgba(15,169,104,.42)}
.btn.ghost{background:var(--card);color:var(--ink)!important;border:1px solid var(--line)}
.hero{padding:72px 0 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;background:var(--mint);color:var(--deep);font-weight:700;font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:16px}
@media (prefers-color-scheme:dark){.eyebrow{color:#47d99c}}
h1{font-size:clamp(36px,6vw,60px);line-height:1.05;letter-spacing:-.035em;margin:0 0 16px}
h2{font-size:clamp(26px,4vw,36px);letter-spacing:-.03em;line-height:1.15;margin:0 0 12px}
h3{font-size:19px;margin:0 0 6px;letter-spacing:-.01em}
.lead{font-size:19px;color:var(--muted);max-width:560px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.gem-art{display:grid;place-items:center;min-height:300px;position:relative}
.gem-art img{width:min(300px,70%);filter:drop-shadow(0 30px 50px rgba(15,169,104,.4));animation:float 5s ease-in-out infinite}
.gem-art .mini{position:absolute;width:56px;animation:float 4s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-12px)}}
@media (prefers-reduced-motion:reduce){.gem-art img,.gem-art .mini{animation:none}}
section{padding:48px 0}
.grid{display:grid;gap:16px}.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;backdrop-filter:blur(10px)}
.card .num{width:36px;height:36px;border-radius:12px;background:var(--mint);color:var(--deep);font-weight:800;display:grid;place-items:center;margin-bottom:12px}
.card p{margin:0;color:var(--muted)}
.gems{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.gem{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-weight:700;font-size:14px}
.dot{width:14px;height:14px;border-radius:4px;transform:rotate(45deg)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;text-align:center}
.stats b{display:block;font-size:34px;letter-spacing:-.03em}.stats span{color:var(--muted);font-size:14px}
table{border-collapse:collapse;width:100%}th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.05em}
.tw{overflow:auto;border-radius:var(--radius);border:1px solid var(--line);background:var(--card)}
.page{padding:48px 0 24px;max-width:780px}
.page h1{font-size:clamp(32px,5vw,44px)}
.page h2{margin-top:36px;font-size:24px}.page p,.page li{color:var(--muted)}.page strong{color:var(--ink)}
details{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 20px}details+details{margin-top:10px}
summary{cursor:pointer;font-weight:700}details p{margin:10px 0 0;color:var(--muted)}
.calc{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));align-items:end}
.calc label{font-size:13px;color:var(--muted);font-weight:600;display:grid;gap:6px}
.calc select,.calc input{font:inherit;padding:11px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.result{margin-top:14px;font-weight:700;font-size:18px}
footer{border-top:1px solid var(--line);margin-top:48px;padding:36px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between}
footer a{color:var(--muted);text-decoration:none;margin-right:16px}footer a:hover{color:var(--ink)}
.band{background:linear-gradient(135deg,var(--deep),#14c98a);color:#fff;border-radius:28px;padding:44px 28px;text-align:center}
.band h2,.band p{color:#fff}.band .btn.primary{background:#fff;color:var(--deep)!important;box-shadow:none}
.note{background:var(--mint);border-radius:14px;padding:14px 18px;color:var(--ink)!important}
@media(max-width:820px){.hero{grid-template-columns:1fr;padding-top:40px}.gem-art{min-height:220px}.nav nav a:not(.keep){display:none}}