/* Tekpor Quant Technologies — slate & ink palette, light + dark.
   One accent; colour is used only for meaning (gain / loss / caution). */

:root {
  --bg: #F4F5F7;
  --surface: #FFFFFF;
  --surface-2: #EEF0F3;
  --border: #DEE2E8;
  --text: #151A22;
  --muted: #5C6573;
  --faint: #8A93A1;
  --accent: #1F4E8C;
  --accent-text: #FFFFFF;
  --up: #1B7A4B;
  --down: #B3382F;
  --warn: #9A6700;
  --up-bg: #E6F2EB;
  --down-bg: #F8E9E7;
  --warn-bg: #F7EEDB;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --maxw: 1120px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0E1116;
  --surface: #161A21;
  --surface-2: #1B2029;
  --border: #272D37;
  --text: #E6E9EF;
  --muted: #8B94A4;
  --faint: #69727F;
  --accent: #6C9BD8;
  --accent-text: #0E1116;
  --up: #3DB07A;
  --down: #E26A61;
  --warn: #D29922;
  --up-bg: #12261D;
  --down-bg: #2A1715;
  --warn-bg: #2A2312;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 16px; line-height: 1.65;
  font-variant-numeric: tabular-nums; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.01em; font-weight: 600; }
h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; color: var(--muted); }
strong { color: var(--text); font-weight: 600; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { padding: 72px 0; }
.sec-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.eyebrow { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 680px; }
.head { max-width: 680px; margin-bottom: 36px; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--border); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 6px; border: 1px solid var(--border); }
.brand small { display: block; font-size: 11px; font-weight: 400; color: var(--muted); line-height: 1; margin-top: 2px; }
.links { display: flex; align-items: center; gap: 22px; }
.links a.l { color: var(--muted); font-size: 14px; }
.links a.l:hover, .links a.l.on { color: var(--text); text-decoration: none; }
.links a.l.on { box-shadow: 0 2px 0 var(--accent); padding-bottom: 4px; }
.btn.menu-btn { display: none; }

/* Buttons */
.btn { display: inline-block; font: inherit; font-size: 14px; font-weight: 600; padding: 9px 16px; border-radius: 6px;
  border: 1px solid var(--border); background: transparent; color: var(--text); cursor: pointer; }
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; }

/* Hero */
.hero { padding: 84px 0 64px; }
.hero .grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.hero p.lead { margin: 18px 0 26px; }
.page-hero { padding: 64px 0 40px; border-bottom: 1px solid var(--border); background: var(--surface); }
.page-hero p.lead { margin-bottom: 0; }

/* Cards + grids */
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 22px; }
.sec-alt .card { background: var(--bg); }
.card p:last-child { margin-bottom: 0; }
.card .tag { font-size: 12px; color: var(--muted); border: 1px solid var(--border); border-radius: 4px; padding: 2px 8px; display: inline-block; margin-bottom: 12px; }
.card .num { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }

/* Live panel (hero) */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.panel-h { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.live { display: inline-flex; align-items: center; gap: 6px; color: var(--up); font-size: 12px; font-weight: 600; }
.live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--up); }
.panel-b { padding: 16px; }
.mini { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.mini div { border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px; }
.mini span { display: block; font-size: 12px; color: var(--muted); }
.mini b { font-size: 15px; font-weight: 600; }
.candles { width: 100%; height: 150px; display: block; }
.note { font-size: 13px; color: var(--faint); }

/* Lists */
.ticks { list-style: none; padding: 0; margin: 0; }
.ticks li { padding: 8px 0 8px 22px; position: relative; color: var(--muted); border-bottom: 1px solid var(--border); }
.ticks li:last-child { border-bottom: 0; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 17px; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }
.ticks.warn li::before { background: var(--warn); }

/* Compare table */
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; font-weight: 600; color: var(--muted); }
td { color: var(--muted); }
td:first-child { color: var(--text); font-weight: 600; }
.tbl { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow-x: auto; }

/* Timeline / roadmap */
.timeline { position: relative; margin: 0; padding: 0; list-style: none; }
.timeline > li { display: grid; grid-template-columns: 150px 1fr; gap: 28px; padding: 0 0 34px; position: relative; }
.timeline > li::before { content: ""; position: absolute; left: 166px; top: 8px; bottom: -8px; width: 1px; background: var(--border); }
.timeline > li:last-child::before { display: none; }
.timeline .when { font-size: 14px; font-weight: 600; color: var(--text); padding-top: 2px; }
.timeline .when small { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
.timeline .body { position: relative; padding-left: 28px; }
.timeline .body::before { content: ""; position: absolute; left: -4px; top: 9px; width: 9px; height: 9px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.timeline li.done .body::before { background: var(--accent); }
.status { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 4px; margin-left: 8px; vertical-align: middle; }
.status.live { background: var(--up-bg); color: var(--up); } .status.live::before { display: none; }
.status.next { background: var(--warn-bg); color: var(--warn); }
.status.later { background: var(--surface-2); color: var(--muted); }

/* Callouts */
.callout { border: 1px solid var(--border); border-left: 3px solid var(--warn); background: var(--surface); border-radius: 6px; padding: 16px 18px; }
.callout p { margin: 0; font-size: 14.5px; }
.callout strong { display: block; margin-bottom: 4px; }

/* Steps */
.steps { counter-reset: s; }
.steps .card { position: relative; padding-top: 52px; }
.steps .card::before { counter-increment: s; content: counter(s); position: absolute; top: 18px; left: 22px; width: 24px; height: 24px; border-radius: 6px; background: var(--surface-2); border: 1px solid var(--border); font-size: 13px; font-weight: 600; display: grid; place-items: center; color: var(--text); }

/* Form */
form.card label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 14px; color: var(--muted); }
form.card input, form.card textarea, form.card select { width: 100%; margin-top: 6px; font: inherit; font-size: 15px; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px; }
form.card input:focus, form.card textarea:focus, form.card select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }

/* Footer */
footer { border-top: 1px solid var(--border); background: var(--surface); padding: 48px 0 28px; }
footer .cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
footer h4 { font-size: 13px; color: var(--text); margin-bottom: 12px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { margin-bottom: 8px; font-size: 14px; }
footer li a { color: var(--muted); }
footer .fine { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--faint); line-height: 1.6; }
footer .fine p { color: var(--faint); font-size: 12.5px; margin-bottom: .6em; }

@media (max-width: 900px) {
  .hero .grid, .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  footer .cols { grid-template-columns: 1fr 1fr; }
  .timeline > li { grid-template-columns: 1fr; gap: 6px; }
  .timeline > li::before { left: 4px; top: 30px; }
  .timeline .body { padding-left: 24px; }
  .timeline .body::before { left: 0; }
  .links { display: none; position: absolute; top: 62px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 24px 16px; }
  .links.open { display: flex; }
  .links a.l { padding: 10px 0; width: 100%; }
  .links a.l.on { box-shadow: none; color: var(--accent); }
  .btn.menu-btn { display: inline-block; }
  section { padding: 52px 0; }
}
@media (max-width: 520px) { .g4 { grid-template-columns: 1fr; } .mini { grid-template-columns: 1fr 1fr 1fr; } footer .cols { grid-template-columns: 1fr; } }