/* Next Economy — "The Open Commons" brand system.
   Framed page, two-column hero, 3-pillar row. IEB magenta + sky + plum over Mist.
   Newsreader (display) + Public Sans (body). Light + dark via prefers-color-scheme. */

:root {
  --mist:#F5F3F2;          /* page background */
  --ink:#1A1A20;           /* primary text, logo dots */
  --magenta:#E6007E;       /* primary accent */
  --magenta-deep:#C70069;  /* primary hover */
  --sky:#6EC1E4;           /* secondary accent */
  --sky-deep:#4FB0DA;
  --plum:#6B2150;          /* anchor accent */
  --panel:#FFFFFF;         /* hero illustration panel */
  --border:#E7E4E1;        /* hairlines */
  --frame-border:#E5E2DF;  /* page-frame */
  --panel-border:#EAE6E3;
  --text-2:#4A4850;        /* body copy */
  --muted:#6A6770;         /* captions */
  --nav-link:#55535A;
  --chip-bg:#FCE4F0;       /* eyebrow pill */
  --chip-bd:#F6C9DF;
  --eyebrow:#B0185F;
  --on-magenta:#FFFFFF;

  --serif:'Newsreader', Georgia, 'Times New Roman', serif;
  --sans:'Public Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --px:clamp(24px, 4vw, 40px);     /* horizontal page padding */
  --frame-shadow:0 30px 60px -48px rgba(20,18,28,.5);
  --r-card:16px; --r-frame:18px; --r-pill:999px;
  --ease:150ms ease;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);background:var(--mist);color:var(--text-2);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;padding:clamp(14px,3vw,44px)}
a{color:var(--eyebrow);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
svg{display:block}
ul{list-style:none}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--mist);
  padding:10px 16px;border-radius:0 0 8px 0;z-index:200;font:600 14px/1 var(--sans)}
.skip:focus{left:0}
:focus-visible{outline:2.5px solid var(--magenta);outline-offset:3px;border-radius:4px}

/* ---- page frame: one card holds nav + main + footer ---- */
.frame{max-width:1120px;margin:0 auto;background:var(--mist);
  border:1px solid var(--frame-border);border-radius:var(--r-frame);
  box-shadow:var(--frame-shadow);overflow:hidden}

/* brand mark */
.mark{width:28px;height:28px}.mark.sm{width:22px;height:22px}
.m-outer{fill:var(--ink)}.m-center{fill:var(--magenta)}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand:hover{text-decoration:none}
.wordmark{font-family:var(--serif);font-weight:500;font-size:19px;letter-spacing:-.01em;color:var(--ink)}
.wordmark .eco{color:var(--magenta)}

/* ---- header / nav ---- */
.site-header{border-bottom:1px solid var(--border)}
.bar{display:flex;align-items:center;gap:18px;padding:18px var(--px)}
.site-nav{display:flex;align-items:center;gap:20px;margin-left:auto}
.site-nav a{font-size:14px;color:var(--nav-link);transition:color var(--ease)}
.site-nav a:hover{color:var(--ink);text-decoration:none}
.site-nav a[aria-current="page"]{color:var(--ink);font-weight:600}
.site-nav .wiki{background:var(--magenta);color:var(--on-magenta);font-weight:600;font-size:13.5px;
  padding:9px 18px;border-radius:var(--r-pill);transition:background var(--ease)}
.site-nav .wiki:hover{background:var(--magenta-deep);color:var(--on-magenta)}
.site-nav .wiki .ext{font-size:.85em;margin-left:3px}
.lang-toggle{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.06em}
.lang-toggle [aria-current="true"]{color:var(--ink);font-weight:600}
.lang-toggle a{color:var(--muted)}
.lang-toggle a:hover{color:var(--ink);text-decoration:none}
.lang-toggle .sep{color:var(--border)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px;color:var(--ink)}

/* ---- hero (Start) ---- */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:54px var(--px) 58px}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:11px;text-transform:uppercase;
  letter-spacing:.12em;color:var(--eyebrow);background:var(--chip-bg);border:1px solid var(--chip-bd);
  border-radius:var(--r-pill);padding:6px 12px;margin-bottom:22px}
.page-title{font-family:var(--serif);font-weight:500;color:var(--ink);
  font-size:clamp(34px,4.2vw,56px);line-height:1.0;letter-spacing:-.02em;margin-bottom:20px;text-wrap:balance}
.lead{font-size:16.5px;line-height:1.6;color:var(--text-2);max-width:46ch;margin-bottom:28px}
.hero-panel{background:var(--panel);aspect-ratio:4/3;border-radius:var(--r-card);
  border:1px solid var(--panel-border);display:flex;align-items:center;justify-content:center;padding:30px}
.hero-mark{width:min(220px,62%);height:auto}
.hm-ink{fill:var(--ink)}.hm-sky{fill:var(--sky)}.hm-plum{fill:var(--plum)}.hm-mag{fill:var(--magenta)}

/* ---- buttons ---- */
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--sans);
  font-weight:600;font-size:14.5px;padding:13px 24px;border-radius:var(--r-pill);
  border:1.5px solid transparent;cursor:pointer;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease)}
.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--sky);color:var(--ink)}
.btn-primary:hover{background:var(--sky-deep)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--mist)}

/* ---- three dimensions / pillars ---- */
.dims-head{padding:6px var(--px) 0}
.dims-head h2{font-family:var(--serif);font-weight:500;color:var(--ink);font-size:clamp(22px,3vw,28px);
  letter-spacing:-.01em;margin-bottom:8px}
.dims-head p{font-size:14.5px;color:var(--muted);max-width:60ch;margin-bottom:22px}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.pillar{background:var(--mist);padding:26px 30px;scroll-margin-top:24px}
.pillar h3{font-family:var(--serif);font-weight:500;color:var(--ink);font-size:20px;margin-bottom:8px}
.pillar h3 .num{font-variant-numeric:tabular-nums;margin-right:6px}
.pillar:nth-child(1) .num{color:var(--magenta)}
.pillar:nth-child(2) .num{color:var(--sky)}
.pillar:nth-child(3) .num{color:var(--plum)}
.pillar p{font-size:13.5px;line-height:1.55;color:var(--muted)}
.pillar h3 a{color:inherit}
.pillar h3 a:hover{color:var(--magenta);text-decoration:none}

/* subpage header (Philosophy / Mission / Playbook) — single column, no panel */
.page-head{margin-bottom:10px}
.page-head .lead{max-width:54ch}

/* extra prose on the Start page (e.g. "What it is"), left-aligned to the hero */
.start-block{padding:10px var(--px) 0}
.start-block h2{font-family:var(--serif);font-weight:500;color:var(--ink);
  font-size:clamp(21px,2.6vw,26px);letter-spacing:-.01em;margin:30px 0 12px}
.start-block p{max-width:62ch;margin:0 0 16px;color:var(--text-2)}

/* ---- single-column content (About / Press) ---- */
.column{max-width:64ch;margin:0 auto;padding:clamp(40px,5vw,56px) var(--px) 12px}
.column .page-title{margin-bottom:24px}
.column h2{font-family:var(--serif);font-weight:500;color:var(--ink);font-size:clamp(21px,2.6vw,26px);
  letter-spacing:-.01em;margin:42px 0 12px}
.column h3{font-family:var(--serif);font-weight:500;color:var(--ink);font-size:18px;margin:24px 0 6px}
.column p{margin:0 0 16px;max-width:62ch}
.column ul{margin:4px 0 18px}
.column li{position:relative;padding-left:20px;margin:8px 0}
.column li::before{content:"";position:absolute;left:2px;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--magenta)}
.column .downloads li a{font-weight:600;color:var(--ink)}
.column .downloads li a::after{content:" ↓";color:var(--eyebrow)}
code{font-family:var(--mono);font-size:.9em;background:var(--chip-bg);border:1px solid var(--chip-bd);border-radius:5px;padding:1px 5px}

/* closing call-to-action */
.cta-block{padding:34px var(--px) 48px;border-top:1px solid var(--border);margin-top:8px}
.cta-block p{font-size:17px;line-height:1.6;color:var(--ink);max-width:48ch;margin-bottom:20px}
.page-start .cta-block{margin-top:0}

/* ---- footer ---- */
.site-footer{border-top:1px solid var(--border)}
.foot-inner{padding:36px var(--px) 44px}
.foot-inner .brand{margin-bottom:14px}
.foot-inner .foot-line{font-size:14.5px;color:var(--text-2);max-width:56ch}
.foot-inner .foot-line.muted{color:var(--muted);font-size:13.5px;margin-top:4px}
.foot-inner .foot-links{margin-top:16px;font-size:13.5px}
.foot-inner .foot-links a{color:var(--muted)}
.foot-inner .foot-links a:hover{color:var(--ink)}

/* ---- responsive ---- */
@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:32px}
  .hero-panel{order:2;max-width:420px;width:100%;margin-inline:auto}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .lang-toggle{margin-left:auto}
  .bar{position:relative;gap:14px}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;
    align-items:flex-start;gap:0;background:var(--mist);border-bottom:1px solid var(--border);
    padding:8px var(--px) 16px;z-index:40}
  .site-nav.open{display:flex}
  .site-nav.open a{padding:11px 0;width:100%}
  .site-nav.open .wiki{margin-top:8px}
}
@media (max-width:700px){
  .pillars{grid-template-columns:1fr;gap:0}
  .pillar{border-top:1px solid var(--border)}
  .pillar:first-child{border-top:0}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.btn:active{transform:none}}