:root{
  --green:#0F6B4F;--green2:#16A34A;--amber:#F59E0B;
  --ink:#0F172A;--slate:#475569;--mute:#94A3B8;
  --paper:#F8FAFC;--card:#FFFFFF;--line:#E2E8F0;
  --shadow:0 1px 3px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.05);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Poppins,system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}

.nav{background:var(--green);color:#fff;position:sticky;top:0;z-index:20}
.nav .wrap{display:flex;align-items:center;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand .mark{width:26px;height:26px;border-radius:7px;background:#fff;color:var(--green);display:grid;place-items:center;font-weight:800;font-size:16px}
.nav nav{margin-left:auto;display:flex;gap:4px}
.nav nav a{padding:8px 12px;border-radius:8px;font-size:13.5px;font-weight:500;color:rgba(255,255,255,.85)}
.nav nav a:hover,.nav nav a.here{background:rgba(255,255,255,.14);color:#fff}
.nav nav a.app{background:var(--amber);color:#3a2a00;font-weight:700}

/* Page header */
.phead{background:linear-gradient(180deg,var(--green) 0%,#0c5a42 100%);color:#fff;padding:40px 0 46px}
.phead .crumb{font-size:12.5px;color:#a7f3d0;margin-bottom:12px;font-weight:500}
.phead .crumb a{color:#a7f3d0}.phead .crumb a:hover{color:#fff}
.phead h1{font-size:clamp(26px,4.5vw,38px);font-weight:800;letter-spacing:-.03em;line-height:1.12}
.phead p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.82);max-width:60ch}
.filter{margin-top:22px;position:relative;max-width:460px}
.filter input{width:100%;border:none;border-radius:12px;padding:13px 14px 13px 42px;font-family:inherit;font-size:14.5px;color:var(--ink);box-shadow:var(--shadow)}
.filter input:focus{outline:3px solid rgba(245,158,11,.5)}
.filter svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--mute)}

/* Layout with sticky contents */
.layout{display:grid;grid-template-columns:230px 1fr;gap:40px;padding:40px 0 60px;align-items:start}
.toc{position:sticky;top:78px}
.toc .lbl{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin-bottom:10px}
.toc a{display:block;padding:7px 12px;border-radius:8px;font-size:13.5px;color:var(--slate);font-weight:500;border-left:2px solid transparent}
.toc a:hover{background:var(--card);color:var(--green)}
.toc a.active{color:var(--green);border-left-color:var(--green);background:var(--card);font-weight:600}

/* Articles */
.article{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 28px;margin-bottom:20px;scroll-margin-top:78px}
.article h2{font-size:21px;font-weight:700;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}
.article h2 .ic{font-size:22px}
.article h3{font-size:15px;font-weight:700;margin:18px 0 8px;color:var(--ink)}
.article p{color:var(--slate);font-size:14.5px;margin:10px 0}
.article ul,.article ol{margin:10px 0 10px 4px;padding-left:20px;color:var(--slate);font-size:14.5px}
.article li{margin:6px 0}
.article b,.article strong{color:var(--ink);font-weight:600}
.steps{counter-reset:step;list-style:none;padding-left:0}
.steps li{position:relative;padding-left:40px;margin:12px 0}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:-1px;width:26px;height:26px;border-radius:8px;background:#ecfdf5;color:var(--green);font-weight:700;font-size:13px;display:grid;place-items:center}
.tip,.warn,.note{border-radius:12px;padding:13px 16px;margin:14px 0;font-size:13.5px;line-height:1.55}
.tip{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
.warn{background:#fffbeb;border:1px solid #fde68a;color:#92400e}
.note{background:#f1f5f9;border:1px solid var(--line);color:var(--slate)}
.tip b,.warn b,.note b{color:inherit}
.pill{display:inline-block;font-size:11px;font-weight:700;padding:2px 9px;border-radius:20px;background:#ecfdf5;color:var(--green);margin-left:8px;vertical-align:middle;letter-spacing:.02em}
.pill.b{background:#eff6ff;color:#1e40af}
.article.hide{display:none}

/* FAQ accordion */
.qa{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.qa summary{padding:18px 22px;font-weight:600;font-size:15px;cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px}
.qa summary::-webkit-details-marker{display:none}
.qa summary .plus{margin-left:auto;color:var(--mute);font-size:20px;transition:transform .2s}
.qa[open] summary .plus{transform:rotate(45deg)}
.qa .body{padding:0 22px 20px;color:var(--slate);font-size:14.5px}
.qa .body p{margin:8px 0}
.qa.hide{display:none}
.faq-group{margin-bottom:28px;scroll-margin-top:78px}
.faq-group h2{font-size:14px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--slate);margin-bottom:14px}

/* Contact + footer */
.contact{background:var(--ink);color:#fff;border-radius:20px;padding:30px;display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin:8px 0 40px}
.contact h3{font-size:19px;font-weight:700}
.contact p{color:rgba(255,255,255,.72);font-size:13.5px;margin-top:4px}
.contact .btns{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:11px;font-weight:600;font-size:14px}
.btn.p{background:var(--amber);color:#3a2a00}
.btn.g{background:rgba(255,255,255,.12);color:#fff}
.btn:hover{opacity:.92}
footer{padding:34px 0 44px;color:var(--slate);font-size:13px;border-top:1px solid var(--line)}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
footer a{color:var(--slate)}footer a:hover{color:var(--green)}
footer .links{display:flex;gap:18px;flex-wrap:wrap}
footer .cr{margin-left:auto}
.nomatch{display:none;text-align:center;color:var(--slate);padding:30px;font-size:14.5px}
.nomatch.show{display:block}

@media(max-width:820px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc{display:none}
}
@media(max-width:640px){
  .nav nav a:not(.app){display:none}
  .contact .btns{margin-left:0;width:100%}
  .btn{flex:1;justify-content:center}
  footer .cr{margin-left:0;width:100%}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}