:root{--ground:#011D19;--ink:#0B1412;--accent:#0BD93E;--paper:#F4F4F0;--card:#FFFFFF;--muted:#5B6B67;--soft:#9AA6A2;--line:#D5DAD4;--tint:#F1F2EE;--green:#2F6B5C;--dmuted:#A9B5B1;--r:26px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.6 'Geist','Helvetica Neue',Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:1320px;margin:0 auto;padding:0 clamp(18px,3vw,36px)}
.mono{font-family:'Geist Mono',ui-monospace,monospace}
.eyebrow{font:500 13px 'Geist Mono',ui-monospace,monospace;text-transform:uppercase;letter-spacing:.08em;color:var(--green)}
.dark .eyebrow{color:var(--dmuted)}
h1,h2,h3{font-weight:500;letter-spacing:-.04em;line-height:1.02;margin:0}
.h-xl{font-size:clamp(44px,5.8vw,92px);letter-spacing:-.055em;line-height:.96}
.h-lg{font-size:clamp(36px,4.4vw,64px);letter-spacing:-.045em}
.h-md{font-size:clamp(28px,3vw,40px)}
.dim{color:var(--soft)} .dark .dim{color:#6E807B}
.lead{font-size:clamp(18px,1.6vw,20px);line-height:1.55;color:var(--muted);max-width:640px;margin:0}
.dark .lead{color:#C7D0CD}
.dark{background:var(--ground);color:#fff}
.btn{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;font-size:16px;padding:15px 24px;border-radius:999px;border:1px solid transparent;transition:transform .2s,filter .2s,background .2s;cursor:pointer;min-height:48px}
.btn:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn-accent{background:var(--accent);color:#011D19}
.btn-ink{background:var(--ink);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.22);color:#fff;font-weight:500}
.btn-line{border-color:#C9CFC9;color:var(--ink)}
.btn svg{width:18px;height:18px}
.section{padding:clamp(72px,9vw,120px) 0}
.row-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:40px}
.grid{display:grid;gap:14px}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.card{background:var(--card);border-radius:var(--r);padding:28px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:14px;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s}
a.card:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(11,20,18,.12)}
.dark .card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);color:#fff}
.pill{display:inline-flex;align-items:center;font:400 13px 'Geist Mono',monospace;background:var(--tint);border-radius:999px;padding:7px 12px}
.chip{display:inline-flex;align-items:center;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:10px 16px;font-size:15px;min-height:44px;transition:background .2s}
.chip:hover{background:#fff}
.arrow{width:42px;height:42px;border-radius:50%;background:var(--tint);display:flex;align-items:center;justify-content:center;flex:none}
/* header */
.hdr{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:20px;padding-bottom:20px}
.hdr .logo img{height:28px;width:auto}
.nav{display:flex;flex-wrap:wrap;gap:4px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:999px;padding:5px}
.nav a{color:#C7D0CD;text-decoration:none;font-size:15px;padding:9px 16px;border-radius:999px;transition:background .2s,color .2s}
.nav a:hover,.nav a[aria-current]{background:rgba(255,255,255,.1);color:#fff}
.hdr-cta{display:flex;gap:6px;align-items:center}
.hdr-cta .login{color:#fff;text-decoration:none;font-size:15px;padding:11px 14px}
.hdr-cta .btn{background:#fff;color:var(--ink);padding:11px 18px;font-size:15px;min-height:44px}
.hero{border-radius:0 0 36px 36px}
.hero-grid{display:flex;flex-wrap:wrap;gap:48px;align-items:center;padding-top:clamp(32px,5vw,64px);padding-bottom:40px}
.hero-copy{flex:1 1 520px;min-width:0;display:flex;flex-direction:column;gap:28px}
.badge{display:inline-flex;align-self:flex-start;align-items:center;gap:10px;font-size:14px;color:#C7D0CD}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.pulse{animation:pulse 2s infinite}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px;padding-bottom:40px}
.tile{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:24px;display:flex;flex-direction:column;gap:28px;transition:transform .35s}
.tile:hover{transform:translateY(-4px)}
.tile b{font:400 44px 'Geist Mono',monospace;letter-spacing:-.05em}
.tile span{font-size:14px;color:var(--dmuted)}
.tile.on{background:var(--accent);color:#011D19;border-color:var(--accent)}.tile.on span{color:#011D19}
/* estimator / tool cards */
.calc{flex:1 1 440px;min-width:0;max-width:560px;background:#fff;color:var(--ink);border-radius:30px;padding:26px;display:flex;flex-direction:column;gap:18px;box-shadow:0 40px 90px rgba(0,0,0,.35)}
.calc.flat{max-width:none;box-shadow:0 1px 0 #E3E5E0,0 24px 60px rgba(11,20,18,.08)}
.calc-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.calc-top strong{font-size:19px;font-weight:600;letter-spacing:-.02em}
.live{display:inline-flex;align-items:center;gap:7px;font:500 12px 'Geist Mono',monospace;color:var(--green)}
.seg{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;background:var(--tint);padding:4px;border-radius:999px}
.seg button{border:0;border-radius:999px;padding:12px;min-height:46px;font:500 15px 'Geist',sans-serif;cursor:pointer;background:transparent;color:var(--muted);transition:background .2s,color .2s}
.seg button[aria-pressed=true]{background:var(--ink);color:#fff}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px}
.fields label{display:flex;flex-direction:column;gap:7px;font-size:13px;color:var(--muted)}
.fields input{font:500 20px 'Geist Mono',monospace;color:var(--ink);padding:13px 14px;min-height:52px;width:100%;border:1px solid #DDE1DC;border-radius:14px;background:#FAFAF8}
.fields input:disabled{background:#EEF0EC;color:#9AA6A2}
.out{background:var(--ink);color:#fff;border-radius:20px;padding:22px;display:flex;flex-direction:column;gap:16px}
.out small{font-size:13px;color:var(--dmuted)}
.big{font:400 48px 'Geist Mono',monospace;letter-spacing:-.05em;line-height:1;color:var(--accent)}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;border-top:1px solid rgba(255,255,255,.1);padding-top:14px}
.kv div{display:flex;flex-direction:column;gap:4px}.kv span{font-size:12px;color:var(--dmuted)}.kv b{font:400 17px 'Geist Mono',monospace}
.fine{font-size:12px;line-height:1.5;color:var(--muted)}
.bar{height:10px;border-radius:999px;background:#16312B;overflow:hidden}.bar i{display:block;height:10px;border-radius:999px;background:var(--accent);transition:width .4s}
/* prose */
.article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article.tool{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}
@media(max-width:960px){.article,.article.tool{grid-template-columns:1fr}}
.prose{font-size:18px;line-height:1.72;max-width:740px}
.prose h2{font-size:clamp(26px,2.6vw,34px);letter-spacing:-.03em;line-height:1.15;margin:52px 0 14px}
.prose h3{font-size:22px;letter-spacing:-.02em;line-height:1.25;margin:34px 0 10px}
.prose p{margin:0 0 18px}.prose ul,.prose ol{padding-left:22px;margin:0 0 20px}.prose li{margin:6px 0}
.prose a{color:var(--green);text-underline-offset:3px}
.prose table{width:100%;border-collapse:collapse;margin:20px 0 28px;font-size:16px;display:block;overflow-x:auto}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.prose th{font-weight:600;background:var(--tint)}
.prose blockquote{margin:24px 0;padding:20px 24px;background:#fff;border-radius:18px}
.tldr{background:#fff;border-radius:22px;padding:24px 26px;margin:0 0 32px}
.tldr p{margin:0}
.side{position:sticky;top:24px;display:flex;flex-direction:column;gap:14px}
.crumbs{font-size:14px;color:var(--dmuted);display:flex;flex-wrap:wrap;gap:8px}
.crumbs a{color:var(--dmuted);text-decoration:none}.crumbs a:hover{color:#fff}
.meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:#C7D0CD}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;font-size:19px;font-weight:500;min-height:44px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:'+';font:300 26px 'Geist',sans-serif;transition:transform .25s}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq p{margin:12px 0 0;color:var(--muted)}
.data{width:100%;border-collapse:collapse;font-size:15px}
.data th,.data td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.data th{font-weight:600;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;cursor:pointer;position:sticky;top:0;background:var(--paper)}
.data td.n{font-family:'Geist Mono',monospace;text-align:right}.data th.n{text-align:right}
.scroll{overflow-x:auto;border-radius:20px;background:#fff;padding:6px 10px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px}
.stat{background:#fff;border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:18px}
.stat b{font:400 32px 'Geist Mono',monospace;letter-spacing:-.04em}.stat span{font-size:14px;color:var(--muted)}
.insight{background:#fff;border-radius:20px;padding:24px;display:flex;flex-direction:column;gap:8px}
.insight h3{font-size:20px;letter-spacing:-.02em;line-height:1.25}
.insight p{margin:0;color:var(--muted);font-size:16px}
.cta-band{border-radius:36px;overflow:hidden;display:flex;flex-wrap:wrap}
.cta-band .copy{flex:1 1 520px;min-width:0;padding:clamp(40px,6vw,64px) clamp(24px,4vw,48px);display:flex;flex-direction:column;gap:28px;justify-content:center}
.cta-band img{flex:1 1 400px;min-width:0;height:440px;object-fit:cover}
.foot{padding-top:48px;padding-bottom:40px;display:flex;flex-direction:column;gap:40px}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:32px;font-size:15px}
.foot-grid div{display:flex;flex-direction:column;gap:10px}
.foot-grid a{color:var(--muted);text-decoration:none}.foot-grid a:hover{color:var(--ink)}
.legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:22px}
.legal a{color:var(--muted)}
.post-card{border-top:1.5px solid var(--ink);padding-top:22px;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink)}
.post-card h3{font-size:22px;line-height:1.2;letter-spacing:-.02em}
.post-card p{margin:0;font-size:15px;color:var(--muted)}
.post-card:hover h3{text-decoration:underline;text-underline-offset:4px}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.tabs a[aria-current]{background:var(--ink);color:#fff;border-color:var(--ink)}
.page-hero{padding-bottom:clamp(48px,6vw,80px)}
.page-hero .inner{display:flex;flex-direction:column;gap:22px;padding-top:clamp(24px,4vw,48px);max-width:980px}
/* motion */
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(11,217,62,.6)}70%{box-shadow:0 0 0 9px rgba(11,217,62,0)}100%{box-shadow:0 0 0 0 rgba(11,217,62,0)}}
@keyframes pop{from{opacity:.4;transform:translateY(4px)}to{opacity:1;transform:none}}
.rise{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.d1{animation-delay:.12s}.d2{animation-delay:.26s}.d3{animation-delay:.4s}.d4{animation-delay:.55s}
.pop{animation:pop .35s ease}
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}html{scroll-behavior:auto}}
@media(max-width:720px){.nav{order:3;width:100%;justify-content:space-between}.nav a{padding:9px 10px;font-size:14px}.hdr-cta .login{display:none}.cta-band img{height:260px}}