:root{--ink:#14171c;--muted:#5b6472;--line:#e4e7ec;--bg:#fff;--soft:#f6f7f9;--accent:#0f6b5c;--accent-ink:#fff;--warn:#fff7e6;--warn-line:#f0d9a8;--max:760px;--wide:1080px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
img{max-width:100%;height:auto}
.wrap{max-width:var(--wide);margin:0 auto;padding:0 20px}
.narrow{max-width:var(--max);margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.logo{font-weight:800;font-size:19px;color:var(--ink);text-decoration:none;letter-spacing:-.2px;display:flex;align-items:center;gap:8px}
.logo svg{flex:none}
nav.main a{color:var(--ink);text-decoration:none;margin-left:20px;font-size:15px;font-weight:500}
nav.main a:hover{color:var(--accent)}
@media(max-width:640px){nav.main a{margin-left:12px;font-size:14px}nav.main a.hide-sm{display:none}}
.disclosure{background:var(--soft);border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.disclosure .narrow,.disclosure .wrap{padding-top:9px;padding-bottom:9px}
.disclosure a{color:var(--muted)}
article{padding:32px 0 56px}
.kicker{text-transform:uppercase;letter-spacing:.08em;font-size:12.5px;font-weight:700;color:var(--accent);margin:0 0 8px}
h1{font-size:clamp(28px,4.4vw,40px);line-height:1.15;letter-spacing:-.6px;margin:0 0 14px}
h2{font-size:clamp(22px,3vw,27px);line-height:1.25;letter-spacing:-.3px;margin:44px 0 12px;padding-top:6px}
h3{font-size:19px;margin:30px 0 8px}
.meta{color:var(--muted);font-size:14.5px;margin-bottom:26px}
p,ul,ol{margin:0 0 16px}
li{margin-bottom:6px}
blockquote{margin:22px 0;padding:14px 18px;border-left:4px solid var(--accent);background:#eef7f5;border-radius:0 8px 8px 0}
blockquote p{margin:0}
.howwe{border:1px solid var(--line);background:var(--soft);border-radius:10px;padding:16px 20px;margin:24px 0;font-size:15.5px}
.howwe p:first-child{margin-bottom:8px}
.howwe ul{margin:0;padding-left:20px}
.table-wrap{overflow-x:auto;margin:18px 0 22px;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:520px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:var(--soft);font-weight:700;font-size:14px}
tbody tr:last-child td{border-bottom:0}
code{background:var(--soft);padding:1px 6px;border-radius:5px;font-size:.92em}
a.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);text-decoration:none;font-weight:700;padding:12px 18px;border-radius:9px;margin:6px 0 10px}
a.btn:hover{filter:brightness(1.08)}
.shot{border:2px dashed #c9a227;background:var(--warn);color:#6b5200;border-radius:10px;padding:18px;margin:20px 0;font-size:14.5px}
.shot strong{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.faq h3{margin-top:22px}
footer.site{border-top:1px solid var(--line);background:var(--soft);font-size:14px;color:var(--muted);padding:28px 0}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
footer.site a{color:var(--muted);margin-right:16px}
.hero{padding:56px 0 30px}
.hero h1{max-width:760px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:680px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin:20px 0 40px}
.card{border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;background:#fff;transition:border-color .15s}
.card:hover{border-color:var(--accent)}
.card .kicker{margin-bottom:6px}
.card h3{margin:0 0 8px;font-size:19px;line-height:1.3}
.card h3 a{color:var(--ink);text-decoration:none}
.card p{color:var(--muted);font-size:15px;flex:1}
.principles{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:10px 0 50px}
.principles div{background:var(--soft);border-radius:12px;padding:18px}
.principles h3{margin:0 0 6px;font-size:16.5px}
.principles p{margin:0;font-size:15px;color:var(--muted)}
.toc{border:1px solid var(--line);border-radius:10px;padding:12px 18px;margin:20px 0;font-size:15px}
.toc strong{display:block;margin-bottom:4px}
.toc ul{margin:0;padding-left:18px}
.toc li{margin:2px 0}
.card p.kicker{flex:none}