*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,p,ul,figure{margin:0}
ul{padding:0;list-style:none}

:root{
  --steel:#1A1D21;
  --steel-soft:#2C3138;
  --plate:#C9CCD1;
  --plate-hi:#E3E6E9;
  --plate-lo:#9DA3AB;
  --verdigris:#2E7D6B;
  --assay-red:#8C2F27;
  --ink-dim:#5B626B;

  --deboss:inset 2px 2px 5px rgba(15,18,22,.30), inset -2px -2px 5px rgba(255,255,255,.80);
  --emboss:2px 2px 6px rgba(15,18,22,.22), -2px -2px 6px rgba(255,255,255,.72);

  --gut:clamp(20px,5vw,64px);
  --stack:clamp(64px,9vw,124px);

  --sans:Archivo,"Helvetica Neue",sans-serif;
  --serif:Spectral,Georgia,serif;
  --code:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}

body{
  background:var(--plate);
  color:var(--steel);
  font-family:var(--serif);
  font-size:clamp(15px,1.05vw,17px);
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:repeating-linear-gradient(96deg,rgba(255,255,255,.16) 0 1px,transparent 1px 4px);
  opacity:.5;
}
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 var(--gut)}

.stamp{
  font-family:var(--sans);
  font-variation-settings:"wdth" 84;
  text-transform:uppercase;
  letter-spacing:.14em;
  font-weight:600;
}
.mono{font-family:var(--code);font-variant-ligatures:none}

/* ── masthead ─────────────────────────────── */
.masthead{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:26px 0 0;flex-wrap:wrap}
.masthead__mark{display:flex;align-items:center;gap:10px;font-family:var(--sans);font-variation-settings:"wdth" 78;font-weight:700;font-size:19px;letter-spacing:.2em;text-transform:uppercase}
.masthead__logo{width:24px;height:24px;flex:none}
.masthead__word span{color:var(--verdigris)}
.masthead__ref{font-family:var(--code);font-size:11px;letter-spacing:.1em;color:var(--ink-dim)}

/* ── hero ─────────────────────────────────── */
.hero{padding:clamp(48px,7vw,88px) 0 var(--stack)}
.hero__eyebrow{font-family:var(--sans);font-variation-settings:"wdth" 80;font-size:11px;font-weight:600;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-dim);display:flex;align-items:center;gap:12px}
.hero__eyebrow::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--plate-lo),transparent)}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(32px,5vw,72px);align-items:center;margin-top:38px}
.hero h1{
  font-family:var(--sans);font-variation-settings:"wdth" 76;
  font-weight:700;text-transform:uppercase;letter-spacing:.005em;
  font-size:clamp(46px,7.4vw,92px);line-height:.94;
  text-shadow:1px 1px 0 rgba(255,255,255,.62), -1px -1px 1px rgba(15,18,22,.22);
}
.hero h1 em{font-style:normal;color:var(--assay-red)}
.hero__lead{margin-top:26px;max-width:44ch;font-size:1.06em;color:#31363D}
.hero__lead b{font-weight:500;color:var(--steel);border-bottom:1px solid var(--plate-lo)}

/* ── the seal ─────────────────────────────── */
.sealbox{display:flex;justify-content:center}
.seal{width:min(340px,84vw);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;
  background:radial-gradient(circle at 32% 28%,var(--plate-hi),var(--plate) 58%,#B4B9BF);
  box-shadow:var(--deboss), 0 18px 34px -20px rgba(15,18,22,.55);position:relative}
.seal svg{width:100%;height:100%;overflow:visible}
.seal__ring{fill:none;stroke:var(--steel);stroke-opacity:.42}
.seal__arc{font-family:var(--sans);font-size:8.4px;font-weight:600;letter-spacing:.32em;text-transform:uppercase;fill:var(--steel);fill-opacity:.78}
.seal__no{font-family:var(--code);font-size:16px;font-weight:500;fill:var(--steel);letter-spacing:.04em}
.seal__sub{font-family:var(--sans);font-size:6.6px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;fill:var(--ink-dim)}
.seal__chk{fill:none;stroke:var(--verdigris);stroke-width:2.4;stroke-linecap:square;stroke-linejoin:miter}
@media (prefers-reduced-motion:no-preference){
  .seal{animation:press .7s cubic-bezier(.2,.8,.3,1) both}
  .seal__rot{transform-origin:50% 50%;animation:turn 1.1s cubic-bezier(.16,1,.3,1) .12s both}
  @keyframes press{from{transform:scale(1.07);box-shadow:0 0 0 rgba(0,0,0,0), 0 34px 50px -24px rgba(15,18,22,.4)}}
  @keyframes turn{from{transform:rotate(-9deg);opacity:0}}
}

/* ── hallmark strip ───────────────────────── */
.marks{margin-top:clamp(40px,6vw,64px)}
.marks__hd{font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:16px}
.marks__row{display:flex;flex-wrap:wrap;gap:10px}
.mk{appearance:none;border:0;padding:0;background:none;cursor:pointer;text-align:left;font:inherit;color:inherit}
.mk__face{width:60px;height:60px;display:grid;place-items:center;background:linear-gradient(150deg,var(--plate-hi),#B7BCC2);box-shadow:var(--deboss);transition:box-shadow .22s,transform .22s}
.mk__glyph{font-family:var(--code);font-size:15px;font-weight:500;color:var(--steel);opacity:.82}
.mk[data-shape="shield"] .mk__face{clip-path:polygon(0 0,100% 0,100% 62%,50% 100%,0 62%)}
.mk[data-shape="round"] .mk__face{border-radius:50%}
.mk[data-shape="lozenge"] .mk__face{clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}
.mk[data-shape="oct"] .mk__face{clip-path:polygon(30% 0,70% 0,100% 30%,100% 70%,70% 100%,30% 100%,0 70%,0 30%)}
.mk[data-shape="tomb"] .mk__face{border-radius:30px 30px 4px 4px}
.mk:hover .mk__face,.mk:focus-visible .mk__face{box-shadow:var(--emboss);transform:translateY(-2px)}
.mk[aria-expanded="true"] .mk__face{box-shadow:var(--emboss),0 0 0 2px var(--verdigris);transform:translateY(-2px)}
.mk:focus-visible{outline:2px solid var(--steel);outline-offset:4px}
.marks__out{margin-top:18px;min-height:78px;padding:16px 18px;background:rgba(255,255,255,.34);box-shadow:var(--deboss)}
.marks__label{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--verdigris)}
.marks__val{font-family:var(--code);font-size:14px;margin-top:6px;word-break:break-all}
.marks__note{font-size:.9em;color:var(--ink-dim);margin-top:5px;line-height:1.6}

/* ── dark: why scores fail ────────────────── */
.dark{background:var(--steel);color:#D9DDE1;padding:var(--stack) 0}
.dark h2{font-family:var(--sans);font-variation-settings:"wdth" 78;font-weight:700;text-transform:uppercase;letter-spacing:.02em;font-size:clamp(28px,4vw,46px);line-height:1.04;color:#F2F4F6}
.dark__intro{margin-top:16px;max-width:52ch;color:#9BA3AC}
.fails{margin-top:clamp(34px,5vw,54px);display:grid;gap:1px;background:#3A4048}
.fail{background:var(--steel);padding:26px clamp(18px,2.4vw,30px);display:grid;grid-template-columns:auto minmax(0,1fr);gap:20px;align-items:start}
.fail__tag{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--assay-red);border:1px solid rgba(140,47,39,.55);padding:5px 9px;white-space:nowrap}
.fail h3{font-family:var(--sans);font-variation-settings:"wdth" 84;font-weight:600;font-size:17px;letter-spacing:.06em;text-transform:uppercase;color:#F2F4F6}
.fail p{margin-top:7px;color:#9BA3AC;font-size:.98em;max-width:62ch}
@media (min-width:760px){.fails{grid-template-columns:1fr 1fr}}

/* ── certificate ──────────────────────────── */
.cert{padding:var(--stack) 0}
.cert__hd{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;border-bottom:1px solid var(--plate-lo);padding-bottom:14px}
.cert h2{font-family:var(--sans);font-variation-settings:"wdth" 78;font-weight:700;text-transform:uppercase;font-size:clamp(24px,3.2vw,38px);letter-spacing:.02em}
.cert__meta{font-family:var(--code);font-size:11px;color:var(--ink-dim);letter-spacing:.06em}
.cert__meta a{color:var(--verdigris);text-decoration-thickness:1px;text-underline-offset:3px}
.rows{margin-top:8px}
.row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;padding:13px 0;border-bottom:1px solid rgba(15,18,22,.11);align-items:baseline}
.row__k{font-family:var(--sans);font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-dim)}
.row__v{font-family:var(--code);font-size:13.5px;overflow-wrap:anywhere}
.row__v i{font-style:normal;color:var(--verdigris)}
.row__v em{font-style:normal;color:var(--assay-red)}
.row__v a{color:var(--steel);text-decoration-color:var(--verdigris);text-decoration-thickness:1px;text-underline-offset:3px}
@media (max-width:600px){.row{grid-template-columns:1fr;gap:3px}}

/* ── assay process ────────────────────────── */
.assay{padding:0 0 var(--stack)}
.assay--lead{padding:var(--stack) 0 0}
.assay h2{font-family:var(--sans);font-variation-settings:"wdth" 78;font-weight:700;text-transform:uppercase;font-size:clamp(24px,3.2vw,38px);letter-spacing:.02em;border-bottom:1px solid var(--plate-lo);padding-bottom:14px}
.assay__intro{margin-top:16px;max-width:56ch;color:#3A4048}
.assay__foot{margin-top:20px;max-width:52ch;font-size:.95em;color:var(--ink-dim);border-left:2px solid var(--verdigris);padding-left:14px}
.rows--grade{margin-top:26px}
.rows--grade .row__v{font-family:var(--serif);font-size:1em;word-break:normal;color:#3A4048;max-width:66ch}
.steps{margin-top:34px;display:grid;gap:clamp(22px,3vw,34px)}
@media (min-width:800px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{padding-top:20px;border-top:2px solid var(--steel)}
.step__no{font-family:var(--code);font-size:12px;color:var(--verdigris);letter-spacing:.1em}
.step h3{font-family:var(--sans);font-variation-settings:"wdth" 84;font-weight:600;font-size:19px;letter-spacing:.07em;text-transform:uppercase;margin-top:8px}
.step p{margin-top:9px;color:#3A4048;font-size:.97em}

/* ── close ────────────────────────────────── */
.close{background:var(--steel-soft);color:#E7EAED;padding:var(--stack) 0}
.close__q{font-family:var(--serif);font-size:clamp(21px,3vw,32px);line-height:1.5;max-width:26ch;color:#F2F4F6;border-left:2px solid var(--verdigris);padding-left:clamp(18px,2.4vw,30px)}
.close__cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-block;padding:14px 26px;font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;text-decoration:none;transition:background .2s,color .2s}
.btn--solid{background:var(--verdigris);color:#0E1114}
.btn--solid:hover{background:#3F9784}
.btn--ghost{color:#E7EAED;border:1px solid #5A626B}
.btn--ghost:hover{border-color:#E7EAED}
.btn:focus-visible{outline:2px solid var(--verdigris);outline-offset:3px}

.foot{padding:24px 0 34px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-family:var(--code);font-size:11px;color:var(--ink-dim);letter-spacing:.05em}

@media (max-width:900px){.hero__grid{grid-template-columns:1fr}.sealbox{order:-1}}

/* ── seal record page ─────────────────────── */
.masthead__mark{text-decoration:none;color:inherit}

.spec{margin-top:24px;padding:13px 17px;border:1px solid rgba(140,47,39,.42);background:rgba(140,47,39,.06);font-size:.93em;color:#4A2C27}
.spec b{font-weight:500;color:var(--assay-red)}
.spec__hd{font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase}

.sealhd{display:flex;justify-content:space-between;align-items:end;gap:26px;flex-wrap:wrap;padding:clamp(30px,4.5vw,54px) 0 0}
.sealhd__eyebrow{font-family:var(--sans);font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-dim)}
.sealhd__id{font-family:var(--code);font-size:clamp(30px,5vw,54px);font-weight:500;line-height:1.1;margin-top:9px}
.sealhd__sub{font-family:var(--code);font-size:12.5px;color:var(--ink-dim);margin-top:9px}
.sealhd__marks{display:flex;gap:8px;flex-wrap:wrap}
.badge{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;padding:6px 10px;border:1px solid currentColor}
.badge--ok{color:var(--verdigris)}
.badge--grade{color:var(--steel)}
.badge--open{color:var(--assay-red)}

.cmd{margin-top:22px;padding:18px 20px;background:var(--steel);color:#C6CCD2;font-family:var(--code);font-size:12.5px;line-height:1.7;overflow-x:auto}
.cmd code{font:inherit}

.trace{margin-top:11px;background:rgba(255,255,255,.34);box-shadow:var(--deboss)}
.trace>summary{cursor:pointer;list-style:none;padding:14px 18px;display:flex;align-items:center;gap:13px;flex-wrap:wrap}
.trace>summary::-webkit-details-marker{display:none}
.trace>summary::before{content:"+";font-family:var(--code);font-size:14px;color:var(--verdigris)}
.trace[open]>summary::before{content:"−"}
.trace>summary:focus-visible{outline:2px solid var(--steel);outline-offset:-2px}
.trace__id{font-family:var(--code);font-size:13px}
.trace__vd{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;padding:3px 8px;border:1px solid currentColor}
.trace__vd--pass{color:var(--verdigris)}
.trace__vd--fail{color:var(--assay-red)}
.trace__meta{font-family:var(--code);font-size:11.5px;color:var(--ink-dim);margin-left:auto}
.trace__body{padding:0 18px 20px;color:#3A4048}
.trace__body p{max-width:70ch}
.trace__body code{font-family:var(--code);font-size:.92em;background:rgba(15,18,22,.07);padding:1px 4px}
.trace__body .cmd{margin-top:14px}
.trace__link{margin-top:12px;font-family:var(--code);font-size:11.5px}
.trace__link a{color:var(--verdigris);text-underline-offset:3px}
.assay__intro code{font-family:var(--code);font-size:.9em;background:rgba(15,18,22,.07);padding:1px 4px}

.btn--line{color:var(--steel);border:1px solid var(--plate-lo)}
.btn--line:hover{border-color:var(--steel)}