:root{color-scheme:light;--green:#236548;--green-dark:#184b35;--soft:#edf6f0;--paper:#fff;--ink:#203129;--muted:#65736b;--line:#d9e3dc;--warn:#fff7e5;--warn-line:#ead5a4;--danger:#fff1ee;--danger-line:#edc8c1;--shadow:0 16px 42px rgba(31,66,48,.09)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:#f5f7f4;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.62}
    a{color:var(--green);text-underline-offset:3px}
    .skip{position:fixed;left:14px;top:-80px;z-index:20;padding:10px 14px;border-radius:10px;background:#fff;color:var(--green);font-weight:800;box-shadow:var(--shadow)}
    .skip:focus{top:14px}
    .topbar{position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(217,227,220,.9);background:rgba(245,247,244,.94);backdrop-filter:blur(14px)}
    .topbar-inner{width:min(1080px,calc(100% - 32px));min-height:68px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:950;text-decoration:none;letter-spacing:-.025em}
    .brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:12px;background:var(--green);color:#fff}
    .back{display:inline-flex;align-items:center;gap:7px;padding:8px 11px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--green);font-size:.86rem;font-weight:850;text-decoration:none}
    main{width:min(1080px,calc(100% - 32px));margin:30px auto 70px}
    .hero{padding:clamp(25px,5vw,52px);border:1px solid #c9ddd0;border-radius:28px;background:radial-gradient(circle at 92% 8%,rgba(124,181,102,.2),transparent 27%),linear-gradient(145deg,#eaf5ee,#fffdf8);box-shadow:var(--shadow)}
    .eyebrow{color:var(--green);font-size:.75rem;font-weight:950;letter-spacing:.1em;text-transform:uppercase}
    h1{max-width:760px;margin:8px 0 13px;font-size:clamp(2rem,5vw,3.8rem);line-height:1.03;letter-spacing:-.055em}
    .hero>p{max-width:780px;margin:0;color:#52645a;font-size:clamp(.97rem,2vw,1.1rem)}
    .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
    .meta span{padding:6px 10px;border:1px solid #c9ddd0;border-radius:999px;background:rgba(255,255,255,.75);color:#466153;font-size:.76rem;font-weight:800}
    .must-know{margin-top:18px;padding:21px;border:2px solid var(--green);border-radius:22px;background:#fff}
    .must-know h2{margin:0 0 5px;font-size:1.12rem}
    .must-know>p{margin:0 0 13px;color:var(--muted);font-size:.88rem}
    .must-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
    .must-item{display:grid;grid-template-columns:28px minmax(0,1fr);gap:9px;align-items:start;padding:11px 12px;border-radius:14px;background:var(--soft);font-size:.83rem}
    .must-item b{width:28px;height:28px;display:grid;place-items:center;border-radius:9px;background:var(--green);color:#fff}
    .quicknav{display:flex;gap:8px;margin:18px 0 26px;padding:9px;overflow:auto;border:1px solid var(--line);border-radius:16px;background:#fff;scrollbar-width:none}
    .quicknav::-webkit-scrollbar{display:none}
    .quicknav a{flex:0 0 auto;padding:8px 11px;border-radius:10px;color:#53645b;font-size:.78rem;font-weight:850;text-decoration:none}
    .quicknav a:hover,.quicknav a:focus-visible{background:var(--soft);color:var(--green)}
    .content{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{scroll-margin-top:92px;padding:22px;border:1px solid var(--line);border-radius:21px;background:var(--paper);box-shadow:0 8px 25px rgba(31,66,48,.045)}
    .card.wide{grid-column:1/-1}
    .card-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:10px}
    .number{width:34px;height:34px;display:grid;place-items:center;flex:0 0 34px;border-radius:11px;background:var(--soft);color:var(--green);font-size:.75rem;font-weight:950}
    .card h2{margin:2px 0 0;font-size:1.08rem;line-height:1.25;letter-spacing:-.02em}
    .card p{margin:9px 0;color:#536159;font-size:.89rem}
    .card ul{margin:10px 0 0;padding-left:20px;color:#536159;font-size:.88rem}
    .card li+li{margin-top:7px}
    .callout{margin-top:13px;padding:13px 14px;border:1px solid #c7ddce;border-radius:14px;background:var(--soft);color:#365744;font-size:.84rem}
    .callout.warning{border-color:var(--warn-line);background:var(--warn);color:#6b552f}
    .callout.danger{border-color:var(--danger-line);background:var(--danger);color:#743e36}
    .callout strong{display:block;margin-bottom:3px;color:inherit}
    footer{margin-top:28px;padding:21px;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem;text-align:center}
    footer nav{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-bottom:9px}
    @media(max-width:760px){.content,.must-grid{grid-template-columns:1fr}.card.wide{grid-column:auto}.hero{border-radius:22px}.topbar-inner,main{width:min(100% - 22px,1080px)}.topbar-inner{min-height:62px}.brand span:last-child{display:none}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}