:root{
  --forest:#0b2e24;--forest-mid:#143d32;--forest-light:#1e5244;
  --slate:#2a3f38;--paper:#f4f1ea;--paper-warm:#ebe6dc;--ink:#1a2420;
  --ink-soft:#3d4f48;--muted:#5c6e66;--line:#c8cfc9;--line-dark:#9aab9f;
  --accent:#2d6a4f;--accent-light:#40916c;--warn:#b45309;--warn-bg:#fef3e2;
  --serif:"Source Serif 4",Georgia,"Libre Baskerville",serif;
  --sans:"Source Sans 3","Segoe UI",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:linear-gradient(165deg,var(--paper) 0%,var(--paper-warm) 45%,#e8e4db 100%);
  color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.72}
body.locked{overflow:hidden}
img,svg{display:block;max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:.18em;transition:color .2s}
a:hover{color:var(--forest-light)}
button,input,select,textarea{font:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.18;letter-spacing:-.015em;margin:0 0 .55em;color:var(--forest)}
h1{font-size:clamp(2rem,4.8vw,3.4rem)}
h2{font-size:clamp(1.45rem,2.6vw,2.1rem)}
h3{font-size:1.18rem}
p{margin:0 0 1em}
.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.narrow{width:min(760px,100%)}
.skip{position:fixed;top:-80px;left:16px;z-index:200;background:var(--forest);color:#fff;
  padding:10px 18px;font-weight:600;border-radius:4px;text-decoration:none}
.skip:focus{top:14px}
/* risk strip */
.risk-strip{background:var(--forest);color:#e8f0ec;font-size:.82rem;border-bottom:2px solid var(--accent-light)}
.risk-strip .shell{display:flex;align-items:center;gap:12px;padding:10px 0}
.risk-strip strong{color:#fff;font-weight:700;white-space:nowrap}
.risk-strip p{margin:0;flex:1;line-height:1.45}
/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(244,241,234,.94);
  border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.site-header .shell{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--forest)}
.logo-mark{width:36px;height:36px;flex-shrink:0}
.logo-text{font-family:var(--serif);font-weight:700;font-size:1.05rem;line-height:1.2}
.logo-text em{font-style:normal;display:block;font-family:var(--sans);font-size:.68rem;
  letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500}
.burger{display:none;background:var(--forest);color:#fff;border:none;padding:9px 14px;
  border-radius:4px;cursor:pointer;font-size:.78rem;font-weight:600}
#mainnav{display:flex;gap:22px;flex-wrap:wrap}
#mainnav a{color:var(--ink-soft);text-decoration:none;font-size:.88rem;font-weight:600}
#mainnav a:hover,#mainnav a[aria-current=page]{color:var(--forest)}
#mainnav a[aria-current=page]{border-bottom:2px solid var(--accent)}
/* hero */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--line);
  background:linear-gradient(135deg,rgba(11,46,36,.04) 0%,transparent 55%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kicker{font-family:var(--sans);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);display:block;margin-bottom:16px;font-weight:600}
.hero .lede{font-size:1.12rem;color:var(--ink-soft);max-width:58ch}
.indep-note{border-left:3px solid var(--accent);padding:12px 0 12px 18px;margin:22px 0;
  background:rgba(45,106,79,.06);font-size:.9rem;color:var(--ink-soft)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--forest);color:#fff;
  border:2px solid var(--forest);padding:11px 20px;border-radius:4px;font-weight:600;
  text-decoration:none;cursor:pointer;transition:background .2s,border-color .2s}
.btn:hover{background:var(--forest-mid);border-color:var(--forest-mid);color:#fff}
.btn.ghost{background:transparent;color:var(--forest);border-color:var(--line-dark)}
.btn.ghost:hover{background:rgba(11,46,36,.06);border-color:var(--forest)}
.hero-art{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff;
  box-shadow:0 8px 32px rgba(11,46,36,.08)}
.hero-art figcaption{padding:12px 16px;font-size:.78rem;color:var(--muted);border-top:1px solid var(--line)}
/* sections */
.band{padding:64px 0;border-bottom:1px solid var(--line)}
.band.alt{background:rgba(255,255,255,.45)}
.band.dark{background:var(--forest);color:#e8f0ec;border-color:var(--forest-mid)}
.band.dark h2,.band.dark h3{color:#fff}
.band.dark p{color:#c5d5ce}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cards article{background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px;
  transition:transform .25s,box-shadow .25s}
.cards article:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(11,46,36,.1)}
.cards .tag{font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:600}
.cards h3{margin:12px 0 8px;font-size:1.05rem}
.cards p{font-size:.92rem;color:var(--ink-soft);margin:0}
.grid-links{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:6px;overflow:hidden}
.grid-links a{background:#fff;padding:20px 22px;text-decoration:none;color:var(--ink);
  display:grid;gap:4px;transition:background .2s}
.grid-links a:hover{background:var(--paper-warm)}
.grid-links b{font-family:var(--serif);font-size:1.02rem;color:var(--forest)}
.grid-links em{font-style:normal;font-size:.86rem;color:var(--muted)}
/* observatory */
.obs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.obs-item{background:#fff;border:1px solid var(--line);border-radius:6px;padding:18px 20px}
.obs-item dt{font-family:var(--serif);font-weight:600;color:var(--forest);margin-bottom:6px}
.obs-item dd{margin:0;font-size:.9rem;color:var(--ink-soft)}
/* calculator */
.calc-panel{background:#fff;border:1px solid var(--line);border-radius:8px;padding:28px;
  box-shadow:0 4px 20px rgba(11,46,36,.06)}
.calc-panel h3{margin-bottom:18px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:18px}
.calc-grid label{display:block;font-size:.82rem;font-weight:600;color:var(--ink-soft);margin-bottom:6px}
.calc-grid input,.calc-grid select{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:4px;background:var(--paper)}
.calc-result{background:var(--forest);color:#fff;border-radius:6px;padding:20px;margin-top:16px}
.calc-result dl{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0}
.calc-result dt{font-size:.78rem;opacity:.85}
.calc-result dd{margin:0;font-family:var(--serif);font-size:1.2rem;font-weight:600}
.calc-error{color:var(--warn);font-size:.88rem;margin-top:8px;display:none}
.calc-error.visible{display:block}
/* FAQ */
.faq-list{margin:0;padding:0;list-style:none}
.faq-list li{border-bottom:1px solid var(--line);padding:18px 0}
.faq-list strong{display:block;font-family:var(--serif);color:var(--forest);margin-bottom:8px}
.faq-list p{margin:0;font-size:.94rem;color:var(--ink-soft)}
/* page */
.phead{padding:56px 0 44px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,46,36,.05),transparent)}
.phead .lede{color:var(--ink-soft);font-size:1.08rem;max-width:68ch}
.meta{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:18px;font-size:.78rem;color:var(--muted)}
.doc{padding:48px 0 72px}
.doc .prose{max-width:720px}
.doc .prose h2{margin-top:2em}
.doc .prose h2:first-child{margin-top:0}
.doc table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.92rem}
.doc table th,.doc table td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.doc table th{background:var(--forest);color:#fff;font-weight:600}
.doc table tr:nth-child(even){background:rgba(255,255,255,.6)}
.doc .formula{background:var(--paper-warm);border-left:3px solid var(--accent);padding:14px 18px;
  margin:1.5em 0;font-family:var(--serif);font-size:1.05rem}
.doc .checklist{list-style:none;padding:0;margin:1.5em 0}
.doc .checklist li{padding:8px 0 8px 28px;position:relative;border-bottom:1px solid var(--line)}
.doc .checklist li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
/* contact */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:28px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px}
.contact-card h3{margin-bottom:12px;font-size:1rem}
.contact-card p{margin:0;font-size:.92rem;color:var(--ink-soft)}
.contact-card a{color:var(--accent)}
/* footer */
.site-footer{background:var(--forest);color:#c5d5ce;padding:48px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:32px}
.footer-grid h4{color:#fff;font-family:var(--serif);font-size:.95rem;margin-bottom:14px}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:8px}
.footer-grid a{color:#a8c4b8;text-decoration:none;font-size:.88rem}
.footer-grid a:hover{color:#fff}
.footer-entity{font-size:.82rem;line-height:1.6;margin-bottom:24px}
.disclaimer-box{background:rgba(0,0,0,.2);border:1px solid rgba(255,255,255,.12);
  border-radius:6px;padding:18px 20px;font-size:.82rem;line-height:1.55;margin-bottom:24px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:12px 24px;font-size:.78rem;color:#8aa89c}
/* modal */
.modal-overlay{position:fixed;inset:0;z-index:300;background:rgba(11,46,36,.55);
  backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;
  padding:20px;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.modal-overlay.open{opacity:1;visibility:visible}
.modal-box{background:#fff;border-radius:8px;max-width:560px;width:100%;max-height:90vh;
  overflow-y:auto;padding:32px;box-shadow:0 24px 64px rgba(11,46,36,.25);
  transform:translateY(12px);transition:transform .3s}
.modal-overlay.open .modal-box{transform:translateY(0)}
.modal-box h2{font-size:1.35rem;margin-bottom:16px}
.modal-box p{font-size:.92rem;color:var(--ink-soft)}
.modal-box .btn{margin-top:20px;width:100%;justify-content:center}
/* cookie banner */
.cookie-banner{position:fixed;bottom:0;left:0;right:0;z-index:250;background:var(--forest);
  color:#e8f0ec;padding:18px 0;transform:translateY(100%);transition:transform .35s;
  box-shadow:0 -4px 24px rgba(0,0,0,.15)}
.cookie-banner.visible{transform:translateY(0)}
.cookie-banner .shell{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.cookie-banner p{margin:0;flex:1;font-size:.86rem;min-width:240px}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap}
.cookie-actions button{padding:9px 18px;border-radius:4px;font-weight:600;cursor:pointer;border:none}
.cookie-actions .accept{background:var(--accent-light);color:#fff}
.cookie-actions .reject{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
/* 404 */
.notfound{text-align:center;padding:80px 0}
.notfound h1{font-size:4rem;color:var(--forest);opacity:.3}
/* motion */
@media (prefers-reduced-motion:no-preference){
  .hero-art{animation:float 6s ease-in-out infinite}
  .cards article{animation:fadeUp .6s ease both}
  .cards article:nth-child(2){animation-delay:.1s}
  .cards article:nth-child(3){animation-delay:.2s}
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}
/* responsive */
@media(max-width:900px){
  .hero-grid,.lead-grid,.footer-grid,.contact-grid{grid-template-columns:1fr}
  .cards,.obs-grid,.calc-grid{grid-template-columns:1fr}
  .grid-links{grid-template-columns:1fr}
  .burger{display:block}
  #mainnav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);
    flex-direction:column;padding:16px 20px;border-bottom:1px solid var(--line);gap:12px}
  #mainnav.open{display:flex}
  .site-header .shell{position:relative;flex-wrap:wrap}
}

.modal-overlay[hidden]{display:none!important}
.cookie-banner[hidden]{display:none!important}
.cookie-banner:not(.visible){transform:translateY(110%)}
button.text-button{font:inherit}