/* STZ AI public site — warm financial-broadsheet editorial. Paper, ink, one amber accent. */

:root {
  --paper: #f4f0e6;
  --card: #fffdf8;
  --ink: #23241f;
  --ink-2: #5d5f56;
  --ink-3: #97998d;
  --rule: #e2ddcd;
  --amber: #a96a12;
  --amber-deep: #8a5308;
  --slate: #47566b;
  --green: #0f8a58;
  --red: #cf3b3b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 500px at 85% -5%, rgba(169,106,18,.08), transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: "Archivo", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* masthead */
.masthead { border-bottom: 3px double var(--rule); background: var(--paper); }
.masthead-in { display: flex; align-items: baseline; gap: 18px; padding: 18px 24px; }
.brand {
  font-family: "Fraunces", serif; font-weight: 900; font-size: 26px;
  letter-spacing: .02em;
}
.brand::after { content: " ·"; color: var(--amber); }
.masthead-meta { flex: 1; color: var(--ink-3); font-size: 13px;
  text-transform: uppercase; letter-spacing: .12em; }
.masthead-meta .dot { margin: 0 6px; color: var(--amber); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 48px; padding: 64px 24px 48px; align-items: start; }
.kicker { color: var(--amber-deep); text-transform: uppercase;
  letter-spacing: .18em; font-size: 12px; font-weight: 700; margin: 0 0 14px; }
h1 {
  font-family: "Fraunces", serif; font-weight: 650; font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.1; margin: 0 0 18px; letter-spacing: -.01em; max-width: 16ch;
}
h1 em { font-style: italic; color: var(--amber-deep); }
.lede { color: var(--ink-2); font-size: 17px; max-width: 46ch; margin: 0 0 28px; }

/* form */
.join { display: grid; gap: 10px; max-width: 440px; }
.join-row { display: grid; grid-template-columns: 3fr 2fr; gap: 8px; }
@media (max-width: 880px) { .join-row { grid-template-columns: 1fr; } }
.join input {
  padding: 13px 14px; border: 1px solid var(--rule); border-radius: 8px;
  background: var(--card); font: inherit; font-size: 15px;
}
.join input:focus { outline: 2px solid var(--amber); outline-offset: 1px; border-color: transparent; }
.btn {
  display: inline-block; padding: 13px 22px; background: var(--amber); color: #fff;
  border: 0; border-radius: 8px; font-weight: 700; font-size: 15px; cursor: pointer;
  text-decoration: none; text-align: center; transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--amber-deep); transform: translateY(-1px); }
.btn-small { padding: 9px 16px; font-size: 13px; }
.join-msg { min-height: 1.4em; font-size: 14px; }
.join-msg.ok { color: var(--green); }
.join-msg.err { color: var(--red); }
.fine { color: var(--ink-3); font-size: 12px; margin: 2px 0 0; }

/* cards */
.hero-cards { display: grid; gap: 22px; }
.card {
  margin: 0; background: var(--card); border: 1px solid var(--rule); border-radius: 14px;
  padding: 18px 18px 16px; box-shadow: 0 18px 40px -28px rgba(35,36,31,.45);
}
.card figcaption { display: flex; justify-content: space-between; align-items: baseline;
  gap: 12px; margin-bottom: 10px; }
.card-title { font-family: "Fraunces", serif; font-weight: 650; font-size: 17px; }
.tag {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  color: var(--amber-deep); border: 1px solid currentColor; border-radius: 99px;
  padding: 3px 9px; white-space: nowrap;
}
.email-card { transform: rotate(.6deg); }
/* the pair splays apart — same tilt on both reads as a crooked page, not scattered paper */
.score-card { transform: rotate(-.5deg); }
.chart-card { transform: rotate(-.4deg); }

/* chart */
.chart-card svg { width: 100%; height: auto; display: block; }
.grid { stroke: var(--rule); stroke-width: 1; }
.grid-label { fill: var(--ink-3); font-size: 10px; text-anchor: start; font-family: "Archivo", sans-serif; }
.line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.line.stz { stroke: var(--amber); }
.line.spx { stroke: var(--slate); stroke-dasharray: 1 4; stroke-width: 2.2; }
.end.stz { fill: var(--amber); }
.end.spx { fill: var(--slate); }
.pt { fill: transparent; cursor: default; }
.pt:hover.stz { fill: rgba(169,106,18,.35); }
.pt:hover.spx { fill: rgba(71,86,107,.35); }
.series-label { font-size: 12px; font-weight: 700; text-anchor: end; font-family: "Archivo", sans-serif; }
.series-label.stz { fill: var(--amber-deep); }
.series-label.spx { fill: var(--slate); }
.legend { display: flex; gap: 18px; margin-top: 8px; font-size: 12px; color: var(--ink-2); }
.swatch { display: inline-block; width: 14px; height: 3px; border-radius: 2px;
  vertical-align: middle; margin-right: 6px; }
.swatch.stz { background: var(--amber); }
.swatch.spx { background: var(--slate); }

/* sample email */
.email { border: 1px solid var(--rule); border-radius: 10px; padding: 14px 16px;
  background: #fffefb; font-size: 13px; }
.email-head { border-bottom: 1px solid var(--rule); padding-bottom: 8px; margin-bottom: 10px; }
.email-from { color: var(--ink-3); font-size: 11px; }
.email-subject { font-weight: 700; margin-top: 2px; }
.email-gen { color: var(--ink-3); font-size: 11px; margin-top: 2px; }
.email-sec { color: var(--amber-deep); font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em; margin: 12px 0 5px; }
.email-blurb { margin: 0; color: var(--ink-2); font-size: 12.5px; }
.email-newsitem { font-size: 12.5px; margin: 0 0 4px; }
.email-newsitem b { display: block; color: var(--ink); }
.email-newsitem span { color: var(--ink-2); font-size: 11.5px; }
.email-nums { color: var(--ink-3); font-size: 11px; margin: 8px 0 0;
  border-top: 1px solid var(--rule); padding-top: 6px; }
.email-range { display: grid; grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.email-range > div { padding: 7px 9px; text-align: center; }
.email-range > div + div { border-left: 1px solid var(--rule); }
.email-range b { display: block; font-size: 12px; }
.email-range span { display: block; font-size: 11.5px; }
.email-range i { display: block; font-style: normal; color: var(--ink-3); font-size: 10px; }
.email-pick { border: 1px solid var(--rule); border-radius: 8px; padding: 8px 10px;
  margin-bottom: 6px; background: var(--card); }
.pick-top { display: flex; justify-content: space-between; }
.pick-top .tk { font-weight: 700; text-decoration: underline; }
.pick-top .sc { font-weight: 700; color: var(--amber-deep); }
.pick-blurb { color: var(--ink-3); font-size: 11px; font-style: italic; margin: 2px 0; }
.pick-why { color: var(--ink-2); font-size: 11.5px; margin: 2px 0; }
.pick-levels b { font-weight: 700; }
.pick-levels em { font-style: normal; font-weight: 700; color: var(--green); }
.email-foot { color: var(--ink-3); font-size: 11px; margin: 6px 0 0; }

/* strip + footer */
.strip { border-top: 3px double var(--rule); border-bottom: 1px solid var(--rule);
  background: var(--card); margin-top: 26px; }
.strip-in { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
  padding: 28px 24px; font-size: 14px; color: var(--ink-2); }
.strip-in strong { color: var(--ink); font-family: "Fraunces", serif; }
.foot { padding: 26px 24px 40px; color: var(--ink-3); font-size: 12px; }
.foot a { color: var(--amber-deep); }

/* email samples, side by side */
.samples { padding: 40px 24px 10px; }
.samples-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 880px) { .samples-grid { grid-template-columns: 1fr; } }

/* model literature */
.model { padding: 44px 24px 8px; }
.model h2 { font-family: "Fraunces", serif; font-weight: 650; font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15; margin: 0 0 12px; max-width: 30ch; }
.model-lede { color: var(--ink-2); max-width: 68ch; margin: 0 0 24px; }
.model-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.model-card { background: var(--card); border: 1px solid var(--rule); border-radius: 12px;
  padding: 16px 16px 12px; position: relative; }
.model-card h3 { font-family: "Fraunces", serif; font-weight: 650; font-size: 17px;
  margin: 0 0 6px; }
.model-card p { color: var(--ink-2); font-size: 13px; margin: 0; }
.model-copyright { color: var(--ink-3); font-size: 12px; margin-top: 18px; }
.model-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 22px; font-size: 13.5px; color: var(--ink-2); }
.model-notes strong { color: var(--ink); }
@media (max-width: 880px) {
  .model-grid { grid-template-columns: repeat(2, 1fr); }
  .model-notes { grid-template-columns: 1fr; gap: 12px; }
}

/* support */
.support { padding: 34px 24px 8px; }
.support-in { display: flex; gap: 28px; align-items: center; justify-content: space-between;
  background: var(--card); border: 1px solid var(--rule); border-radius: 14px;
  padding: 22px 26px; }
.support-title { font-family: "Fraunces", serif; font-weight: 650; font-size: 19px; }
.support-copy { color: var(--ink-2); font-size: 14px; margin: 6px 0 0; max-width: 64ch; }
.support-in .btn { white-space: nowrap; }
@media (max-width: 880px) { .support-in { flex-direction: column; align-items: flex-start; } }

/* scorecard sample */
.score-hero { border: 1px solid var(--rule); border-radius: 8px; padding: 9px 12px;
  margin-bottom: 6px; background: var(--card); }
.score-kick { font-weight: 700; font-size: 12px; }
.score-big { font-family: "Fraunces", serif; font-weight: 650; font-size: 20px; }
.score-big.up, .up { color: var(--green); }
.score-big.down, .down { color: var(--red); }
.score-sub { color: var(--ink-2); font-size: 11.5px; }
.score-sub b, .score-sub strong { color: var(--ink); }
.score-sub strong.up { color: var(--green); }
.score-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.score-table th { text-align: left; color: var(--ink-3); font-size: 9px;
  text-transform: uppercase; letter-spacing: .06em; padding: 6px 5px 3px 0; }
.score-table td { padding: 5px 5px 5px 0; border-top: 1px dashed var(--rule);
  white-space: nowrap; }
.score-table .mut { color: var(--ink-3); }
.spark { width: 30px; height: 14px; display: block; }
.sb.up { fill: var(--green); }
.sb.dn { fill: var(--red); }
.sb-base { stroke: var(--rule); stroke-width: 1; }
.score-table .tk { font-weight: 700; }
.pill { display: inline-block; background: #3d3554; color: #fff; border-radius: 99px;
  font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  padding: 2px 7px; vertical-align: 1px; }

/* message page */
.msg-page { min-height: 70vh; display: grid; place-items: center; padding: 40px 24px; }
.msg-card { max-width: 480px; text-align: center; }
.msg-card h1 { font-size: 30px; }
.msg-card p { color: var(--ink-2); }

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .strip-in { grid-template-columns: 1fr; gap: 14px; }
  .email-card, .score-card, .chart-card { transform: none; }
  .masthead-meta { display: none; }
}