/* =========================================================================
   FORMULA7 — Home v4 "Mineral Intelligence"
   A standalone art direction for the homepage: editorial serif display,
   monospaced data labels, hairline grid, paper/near-black sections.
   ========================================================================= */
:root{
  --ink:#080B11;
  --ink-2:#0E131C;
  --paper:#F4F1E9;
  --paper-2:#EAE5D8;
  --gold:#C9A227;
  --gold-2:#E4C87E;
  --teal:#0F5C4E;
  --muted-d:#93A0AE;
  --muted-l:#5A6470;
  --line-d:rgba(255,255,255,.10);
  --line-l:rgba(8,11,17,.14);
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body.v4{margin:0;background:var(--ink);color:var(--paper);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
.v4 a{color:inherit}
.v4 img,svg{display:block}
.wrap-v4{max-width:1240px;margin:0 auto;padding:0 28px}

/* ---------- Header ---------- */
.v4 .site-header{position:sticky;top:0;z-index:80;background:rgba(8,11,17,.86);backdrop-filter:blur(16px) saturate(150%);-webkit-backdrop-filter:blur(16px) saturate(150%);border-bottom:1px solid var(--line-d)}
.v4 .header-in{display:flex;align-items:center;gap:28px;min-height:64px}
.v4 .brand{display:flex;align-items:center;gap:0;font-family:var(--sans);font-weight:800;letter-spacing:.16em;font-size:15px;color:#fff;text-decoration:none;white-space:nowrap}
.v4 .brand span{color:var(--gold)}
.v4 .brand .mark{width:22px;height:22px;margin-right:10px}
.v4 .nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.v4 .nav a{font-size:12.5px;font-weight:500;letter-spacing:.02em;color:#C6CFD9;text-decoration:none;padding:8px 10px;border-radius:3px;transition:color .15s,background .15s}
.v4 .nav a:hover{color:#fff;background:rgba(255,255,255,.05)}
.v4 .nav a.btn{background:var(--gold);color:#171204;font-weight:700;padding:9px 14px;margin-left:10px;letter-spacing:.02em}
.v4 .nav a.btn:hover{background:var(--gold-2)}
.v4 .nav .lang{color:#8A94A0;border-left:1px solid var(--line-d);margin-left:8px;padding-left:14px}
.v4 .nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line-d);color:#fff;font-size:16px;line-height:1;padding:8px 10px;border-radius:3px;cursor:pointer}

/* ---------- Shared type ---------- */
.kick{font-family:var(--mono);font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin:0 0 22px;display:flex;align-items:center;gap:10px}
.kick::before{content:"";width:26px;height:1px;background:var(--gold);display:inline-block}
.display{font-family:var(--serif);font-weight:300;letter-spacing:-.02em;line-height:1.02;margin:0}
.lead{font-size:17px;line-height:1.62;color:#AEB9C6;max-width:52ch;margin:0}
.on-paper .kick{color:#8A6A12}
.on-paper .kick::before{background:#8A6A12}
.on-paper .lead{color:var(--muted-l)}

/* ---------- Hero ---------- */
.hero-v4{position:relative;overflow:hidden;border-bottom:1px solid var(--line-d);background:
  radial-gradient(1200px 600px at 78% -10%,rgba(201,162,39,.13),transparent 60%),
  radial-gradient(900px 500px at 10% 110%,rgba(15,92,78,.25),transparent 65%),
  var(--ink)}
.hero-v4>*{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center;padding:88px 0 76px}
.hero-v4 h1{font-size:clamp(46px,5.6vw,82px)}
.hero-v4 h1 em{font-style:italic;color:var(--gold-2)}
.hero-v4 .lead{margin:26px 0 34px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.btn-v4{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;font-size:13.5px;font-weight:600;letter-spacing:.01em;text-decoration:none;border:1px solid transparent;border-radius:3px;transition:transform .18s,background .18s,border-color .18s}
.btn-v4.solid{background:var(--gold);color:#171204}
.btn-v4.solid:hover{background:var(--gold-2);transform:translateY(-1px)}
.btn-v4.ghost{border-color:rgba(255,255,255,.22);color:#E7EDF3}
.btn-v4.ghost:hover{border-color:var(--gold);color:var(--gold-2);transform:translateY(-1px)}
.provenance{margin:26px 0 0;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:#6F7A87;text-transform:uppercase}

/* Hero panel — reference data, no live feed */
.panel{background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.015));border:1px solid var(--line-d);border-radius:5px;box-shadow:0 40px 80px -40px rgba(0,0,0,.9)}
.panel-head{display:flex;justify-content:space-between;align-items:baseline;padding:18px 22px;border-bottom:1px solid var(--line-d)}
.panel-head b{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:#8D97A3;font-weight:500}
.panel-head i{font-family:var(--mono);font-size:10.5px;font-style:normal;color:var(--gold);letter-spacing:.08em}
.panel-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:16px;padding:15px 22px;border-bottom:1px solid rgba(255,255,255,.06)}
.panel-row:last-of-type{border-bottom:0}
.pr-name{font-size:13.5px;color:#DCE4EC;display:flex;align-items:center;gap:10px}
.pr-name s{text-decoration:none;font-family:var(--mono);font-size:10px;color:#6F7A87;border:1px solid var(--line-d);padding:2px 5px;border-radius:2px;letter-spacing:.06em}
.pr-bar{grid-column:1/-1;height:3px;background:rgba(255,255,255,.07);border-radius:2px;overflow:hidden;margin-top:-4px}
.pr-bar i{display:block;height:100%;background:linear-gradient(90deg,rgba(201,162,39,.55),var(--gold-2))}
.pr-val{font-family:var(--mono);font-size:13px;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.pr-val small{display:block;font-size:9.5px;color:#6F7A87;letter-spacing:.06em;text-align:right;margin-top:2px}
.panel-foot{padding:14px 22px;border-top:1px solid var(--line-d);font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:#6F7A87;display:flex;justify-content:space-between;gap:12px}

/* ---------- Ticker ---------- */
.ticker{border-bottom:1px solid var(--line-d);background:#0A0E15}
.ticker .wrap-v4{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.tick{padding:26px 26px 24px;border-left:1px solid var(--line-d)}
.tick:first-child{border-left:0;padding-left:0}
.tick b{display:block;font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:#6F7A87;font-weight:500;margin-bottom:8px}
.tick strong{display:block;font-family:var(--serif);font-weight:400;font-size:30px;line-height:1;color:#fff;letter-spacing:-.02em}
.tick span{display:block;font-size:12px;color:#94A0AD;margin-top:7px}

/* ---------- Section shell ---------- */
.sec{padding:104px 0;border-bottom:1px solid var(--line-l)}
.sec.dark{background:var(--ink);color:var(--paper);border-bottom-color:var(--line-d)}
.sec.paper{background:var(--paper);color:#151A21}
.sec.tint{background:var(--paper-2);color:#151A21}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:56px;align-items:end;margin-bottom:56px}
.sec-head h2{font-family:var(--serif);font-weight:300;font-size:clamp(32px,3.6vw,50px);line-height:1.06;letter-spacing:-.02em;margin:0}
.sec-head p{margin:0;font-size:15px;line-height:1.65;color:var(--muted-l);max-width:44ch}
.sec.dark .sec-head p{color:#A6B2BF}

/* ---------- Concentration chart ---------- */
.chart{border-top:1px solid var(--line-l)}
.chart-row{display:grid;grid-template-columns:150px 1fr 120px;align-items:center;gap:22px;padding:16px 0;border-bottom:1px solid var(--line-l)}
.chart-row .cl{font-size:13.5px;color:#1B2129}
.chart-row .ct{height:6px;background:rgba(8,11,17,.07);border-radius:3px;overflow:hidden}
.chart-row .ct i{display:block;height:100%;background:linear-gradient(90deg,#8A6A12,var(--gold),var(--gold-2));border-radius:3px;transform-origin:left;transform:scaleX(0);transition:transform 1.1s cubic-bezier(.22,.61,.36,1)}
.chart-row .cv{font-family:var(--mono);font-size:12.5px;text-align:right;color:#3C454F;font-variant-numeric:tabular-nums}
.is-in .chart-row .ct i{transform:scaleX(1)}
.is-in .chart-row:nth-child(2) .ct i{transition-delay:.06s}
.is-in .chart-row:nth-child(3) .ct i{transition-delay:.12s}
.is-in .chart-row:nth-child(4) .ct i{transition-delay:.18s}
.is-in .chart-row:nth-child(5) .ct i{transition-delay:.24s}
.chart-note{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:20px;font-family:var(--mono);font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:#78828D}

/* ---------- Modules ---------- */
.mods{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line-d);border-left:1px solid var(--line-d)}
.mod{padding:34px 32px 30px;border-right:1px solid var(--line-d);border-bottom:1px solid var(--line-d);text-decoration:none;color:inherit;transition:background .2s}
.mod:hover{background:rgba(255,255,255,.03)}
.mod .n{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--gold);display:block;margin-bottom:16px}
.mod h3{font-family:var(--serif);font-weight:400;font-size:25px;margin:0 0 10px;letter-spacing:-.01em}
.mod p{margin:0;font-size:14px;line-height:1.6;color:#9FACBA;max-width:38ch}
.mod .go{display:inline-flex;align-items:center;gap:7px;margin-top:20px;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2)}

/* ---------- Research cards ---------- */
.res{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line-l);border-left:1px solid var(--line-l)}
.res article{padding:32px 30px 34px;border-right:1px solid var(--line-l);border-bottom:1px solid var(--line-l);background:var(--paper)}
.res .fig{font-family:var(--serif);font-size:52px;line-height:1;letter-spacing:-.03em;color:#141A21;margin-bottom:14px}
.res h3{font-size:14px;font-weight:600;margin:0 0 10px;color:#141A21}
.res p{margin:0;font-size:13.5px;line-height:1.62;color:#4C5661}
.res .src{display:block;margin-top:18px;font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:#8A8F97}

/* ---------- Countries ---------- */
.countries{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.ctry{border:1px solid var(--line-d);border-radius:4px;padding:20px 18px;text-decoration:none;display:block;background:rgba(255,255,255,.02);transition:border-color .2s,background .2s,transform .2s}
.ctry:hover{border-color:rgba(201,162,39,.55);background:rgba(201,162,39,.06);transform:translateY(-2px)}
.ctry b{display:block;font-size:14px;color:#fff;margin-bottom:6px}
.ctry span{display:block;font-family:var(--mono);font-size:10.5px;color:#8D97A3;letter-spacing:.05em}
.ctry em{font-style:normal;color:var(--gold-2)}

/* ---------- Closing CTA ---------- */
.close{background:var(--ink-2);border-bottom:1px solid var(--line-d);padding:96px 0}
.close .wrap-v4{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.close h2{font-family:var(--serif);font-weight:300;font-size:clamp(30px,3.4vw,46px);line-height:1.08;letter-spacing:-.02em;margin:0 0 18px}
.close p{margin:0;color:#A6B2BF;font-size:15px;max-width:46ch}
.mailbox{border:1px solid var(--line-d);border-radius:4px;padding:26px}
.mailbox .lbl{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:#6F7A87;margin:0 0 10px}
.mailbox a.mail{font-size:20px;color:var(--gold-2);text-decoration:none;border-bottom:1px solid rgba(228,200,126,.35);padding-bottom:2px}
.mailbox small{display:block;margin-top:16px;color:#7C8794;font-size:12px;line-height:1.55}

/* ---------- Footer ---------- */
.v4 .site-footer{background:#05070B;border-top:1px solid var(--line-d);padding:56px 0 40px;color:#93A0AE}
.v4 .site-footer .brand{color:#fff;margin-bottom:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;align-items:start}
.v4 .site-footer p{margin:0 0 10px;font-size:13px;line-height:1.7;color:#7C8794}
.v4 .site-footer a{color:#AEB9C6;text-decoration:none;border-bottom:1px solid transparent}
.v4 .site-footer a:hover{color:#fff;border-bottom-color:var(--gold)}
.foot-ttl{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:#5C6672;margin:0 0 14px!important}
.foot-links-v4{display:flex;flex-direction:column;gap:7px}
.legal-v4{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.06);font-size:11.5px;color:#5C6672;line-height:1.6}

/* ---------- Mobile CTA ---------- */
.v4 .mobile-cta{display:none}

/* ---------- Reveal ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.rv.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:48px;padding:64px 0 60px}
  .sec-head{grid-template-columns:1fr;gap:20px;align-items:start}
  .res{grid-template-columns:1fr 1fr}
  .close .wrap-v4{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .ticker .wrap-v4{grid-template-columns:1fr 1fr}
  .tick:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:860px){
  .v4 .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#080B11;border-bottom:1px solid var(--line-d);flex-direction:column;align-items:stretch;padding:14px 20px 20px;gap:2px}
  .v4 .nav.open{display:flex}
  .v4 .nav a{padding:12px 4px;font-size:14px;border-bottom:1px solid rgba(255,255,255,.05)}
  .v4 .nav a.btn{margin:14px 0 0;text-align:center;justify-content:center;display:flex}
  .v4 .nav .lang{border-left:0;margin:0;padding-left:4px}
  .v4 .nav-toggle{display:block}
  .v4 .wrap-v4{padding:0 20px}
  .hero-v4 h1{font-size:clamp(38px,10vw,54px)}
  .mods{grid-template-columns:1fr}
  .res{grid-template-columns:1fr}
  .countries{grid-template-columns:1fr 1fr}
  .chart-row{grid-template-columns:110px 1fr 84px;gap:14px}
  .sec{padding:72px 0}
  .close{padding:68px 0}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .v4 .mobile-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;background:#05070B;border-top:1px solid rgba(201,162,39,.4);padding:10px 16px;gap:10px;justify-content:space-between;align-items:center}
  .v4 .mobile-cta a{font-size:13px;color:#C6CFD9;text-decoration:none}
  .v4 .mobile-cta a.btn{background:var(--gold);color:#171204;padding:9px 14px;border-radius:3px;font-weight:700}
  body.v4{padding-bottom:64px}
}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .chart-row .ct i{transition:none;transform:scaleX(1)}
}

/* Skip link — CSS only (no inline handlers, CSP-safe) */
.v4 .skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--gold);color:#171204;padding:10px 14px;font-weight:600;text-decoration:none;border-radius:0 0 4px 0}
.v4 .skip:focus{left:8px}