:root{--ink:#0e2a2b;--ink2:#17413f;--amber:#f4a62a;--mint:#dff1ea;--line:#e5e9e8;--txt:#111;--r:10px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--txt);background:#fff}
a{color:var(--ink2)}img,svg{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.w{max-width:1080px;margin:auto;padding:0 20px}
#site-header{position:sticky;top:0;z-index:9;min-height:62px;background:var(--ink)}header{background:var(--ink)}
header .w{display:flex;align-items:center;justify-content:space-between;min-height:62px;flex-wrap:wrap}
.logo{color:#fff;font-weight:800;text-decoration:none;font-size:20px}.logo b{color:var(--amber)}
nav a{color:#d6e8e4;text-decoration:none;margin-left:20px;font-size:15px}nav a:hover{color:var(--amber)}
.btn{display:inline-block;background:var(--amber);color:#111;font-weight:700;padding:13px 24px;border-radius:var(--r);text-decoration:none;border:0;font-size:16px;cursor:pointer;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}nav .btn{padding:8px 16px;margin-left:20px;color:#111}
.hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.hero .w{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
h1{font-size:clamp(30px,5vw,48px);line-height:1.12;margin:0 0 16px}h2{font-size:clamp(24px,3.5vw,32px);margin:48px 0 12px}h3{margin:0 0 6px}
.kick{color:var(--ink2);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:#fff}
.card .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--amber);font-weight:800;margin-bottom:8px}
.note{background:var(--mint);border-left:5px solid var(--ink2);padding:14px 18px;border-radius:var(--r)}
table{border-collapse:collapse;width:100%}th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left}th{background:var(--mint)}
.scroll{overflow-x:auto}
details{border-bottom:1px solid var(--line);padding:12px 0}summary{cursor:pointer;font-weight:700}
footer{background:var(--ink);color:#c5dad6;margin-top:64px;padding:44px 0 20px;font-size:15px}
footer .grid{grid-template-columns:2fr 1fr 1fr 1fr}footer h4{color:#fff;margin:0 0 8px}footer a{color:#c5dad6;display:block;text-decoration:none;padding:3px 0}footer a:hover{color:var(--amber)}
.copy{border-top:1px solid #2b5450;margin-top:24px;padding-top:14px;font-size:13px}
.crumbs{font-size:14px;padding:14px 0}
/* tool */
.tool{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:10px}
label{display:block;font-weight:600;margin:14px 0 5px}
input,select{width:100%;padding:12px;border:1.5px solid #b9c5c3;border-radius:8px;font:inherit;background:#fff}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.err{color:#b00020;font-size:14px;min-height:20px;font-weight:600}
.res{background:var(--ink);color:#fff;border-radius:14px;padding:24px;position:sticky;top:78px;align-self:start}
.res .big{font-size:44px;font-weight:800;color:var(--amber);line-height:1}
.res p{margin:6px 0}.res .empty{color:#a9c4bf}
.bar{display:flex;height:16px;border-radius:8px;overflow:hidden;margin:10px 0}
@media(max-width:800px){.hero .w,.tool,footer .grid{grid-template-columns:1fr}.res{position:static}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}

.logo{display:flex;align-items:center;gap:8px}nav{display:flex;align-items:center}nav form{margin-left:20px}nav input{padding:7px 10px;border:0;border-radius:8px;width:150px;font-size:14px}
.menu-btn{display:none;background:0;border:1px solid #3d6b66;color:#fff;font-size:22px;border-radius:8px;padding:2px 10px;cursor:pointer}
.sr{position:absolute;left:-9999px}.tag{font-size:13px;font-weight:700;color:var(--ink2);text-transform:uppercase;letter-spacing:.05em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin:20px 0}.c img{border-radius:var(--r);width:100%;height:auto}.c h3{margin:4px 0;font-size:19px}.c h3 a{color:#111;text-decoration:none}.c h3 a:hover{text-decoration:underline}.c p{margin:4px 0;font-size:15px}
.chip{display:inline-block;border:1.5px solid var(--ink2);border-radius:20px;padding:4px 14px;margin:0 6px 6px 0;text-decoration:none;font-size:14px}.chip:hover{background:var(--mint)}
.art{max-width:760px}.art img{border-radius:var(--r)}.meta{color:#555;font-size:14px}.lead{font-size:19px}.toc{background:var(--mint);border-radius:var(--r);padding:12px 20px;margin:20px 0}.toc ol{margin:6px 0 0;padding-left:20px}
.crumbs a{color:var(--ink2)}[hidden]{display:none!important}
@media(max-width:800px){.menu-btn{display:block}nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding-bottom:14px}nav.open{display:flex}nav a,nav form{margin:0;padding:10px 0}nav input{width:100%}nav .btn{margin-top:8px;text-align:center}}