/* EKO - Linear-class design system. Dark default, light via [data-theme="light"]. */
:root {
  --bg: #0a0a0b; --bg-soft: #101013; --panel: #141517; --panel2: #0e0f12;
  --ink: #f7f8f8; --muted: #9ba1ac; --faint: #6b7079;
  --line: rgba(255,255,255,.09); --line2: rgba(255,255,255,.14);
  --brand: #4db6c6; --accent: #5e6ad2; --accent2: #7c85e0;
  --ok: #4cc38a; --warn: #e5a13c; --err: #f16a6a;
  --radius: 12px; --glow: 0 0 0 1px rgba(94,106,210,.25), 0 8px 32px rgba(94,106,210,.12);
}
[data-theme="light"] {
  --bg: #ffffff; --bg-soft: #f7f7f9; --panel: #ffffff; --panel2: #fafafb;
  --ink: #181a1f; --muted: #5b6370; --faint: #8a919e;
  --line: #e7e8ee; --line2: #d7d9e2;
  --brand: #006a88; --accent: #5e6ad2; --accent2: #4c56b8;
  --ok: #0e9f6e; --warn: #b45309; --err: #dc2626;
  --glow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink); overflow-x: hidden;
  font: 16px/1.6 "Inter", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
html { overflow-x: hidden; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: none; opacity: .85; }
main { max-width: 1120px; margin: 0 auto; padding: 24px 24px 96px; }
h1, h2, h3, h4 { letter-spacing: -0.02em; }

/* ---------- header ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { max-width: 1120px; margin: 0 auto; padding: 0 24px; height: 60px;
  display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 750; font-size: 18px;
  letter-spacing: 2px; color: var(--ink); }
.brand img { height: 26px; width: auto; display: block; }
.nav nav { display: flex; gap: 2px; flex: 1; }
.nav nav a { color: var(--muted); font-size: 14px; font-weight: 500; padding: 6px 11px;
  border-radius: 8px; white-space: nowrap; }
.nav nav a:hover { color: var(--ink); background: var(--panel); opacity: 1; }
.nav .actions { display: flex; gap: 10px; align-items: center; margin-left: auto; }
.theme-toggle { background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: 8px; width: 34px; height: 34px; padding: 0; font-size: 15px;
  display: inline-flex; align-items: center; justify-content: center; }
.theme-toggle:hover { color: var(--ink); border-color: var(--line2); box-shadow: none; transform: none; }
.menu-btn { display: none; background: transparent; border: 1px solid var(--line);
  color: var(--muted); border-radius: 8px; width: 34px; height: 34px; padding: 0; }
.mobile-menu { display: none; border-top: 1px solid var(--line); padding: 8px 24px 16px; }
.mobile-menu a { display: block; padding: 10px 4px; color: var(--muted); font-weight: 500; }
.mobile-menu.open { display: block; }
@media (max-width: 860px) {
  .nav nav { display: none; }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .nav .actions .btn.ghost { display: none; }
}

/* ---------- buttons ---------- */
button, .btn {
  background: var(--accent); color: #fff; border: 1px solid transparent; border-radius: 9px;
  padding: 10px 18px; font-size: 14px; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
  min-height: 44px;
}
button:hover, .btn:hover { transform: translateY(-1px); opacity: 1; }
.btn.ghost { background: transparent; border: 1px solid var(--line2); color: var(--ink); }
.btn.brand { background: var(--brand); }
.btn.small { padding: 6px 14px; font-size: 13px; min-height: 34px; }

/* ---------- hero ---------- */
.hero { text-align: center; padding: 28px 16px 36px; position: relative; }
.hero::before {
  content: ""; position: absolute; inset: -140px 0 0; z-index: -1;
  background:
    radial-gradient(640px 320px at 22% 0%, rgba(94,106,210,.20), transparent 70%),
    radial-gradient(700px 360px at 78% 8%, rgba(77,182,198,.14), transparent 70%);
}
[data-theme="light"] .hero::before {
  background:
    radial-gradient(640px 320px at 22% 0%, rgba(94,106,210,.12), transparent 70%),
    radial-gradient(700px 360px at 78% 8%, rgba(0,106,136,.08), transparent 70%);
}
.pill { display: inline-block; font-size: 12px; font-weight: 650; letter-spacing: .8px;
  color: var(--accent2); background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 5px 13px; border-radius: 999px; text-transform: uppercase; }
.hero h1 { font-size: clamp(40px, 6.6vw, 64px); line-height: 1.05; margin: 20px 0 14px;
  font-weight: 800; letter-spacing: -0.03em; }
.hero h1 .grad { background: linear-gradient(90deg, var(--brand), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { max-width: 620px; margin: 0 auto 30px; color: var(--muted); font-size: 18px; }
.cta-row { display: flex; gap: 12px; justify-content: center; align-items: center; flex-wrap: wrap; }
.hero-fine { margin-top: 16px; color: var(--faint); font-size: 13.5px; }

/* ---------- sections & cards ---------- */
section { margin: 72px 0; }
section.alt { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 20px;
  padding: 48px 36px; margin-left: -12px; margin-right: -12px; }
.eyebrow { color: var(--accent2); font-size: 12.5px; font-weight: 700; letter-spacing: 1.6px;
  text-transform: uppercase; margin-bottom: 8px; }
.sec { font-size: clamp(26px, 4vw, 34px); margin: 0 0 8px; font-weight: 750; }
.sec-sub { color: var(--muted); max-width: 620px; margin-bottom: 26px; font-size: 17px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; margin: 10px 0; transition: border-color .15s ease, box-shadow .15s ease; }
.card:hover { border-color: var(--line2); box-shadow: var(--glow); }
.card h3 { margin: 0 0 8px; font-size: 16.5px; }
.card p { color: var(--muted); font-size: 16px; margin: 6px 0; }
.steps { counter-reset: s; }
.step { display: flex; gap: 16px; align-items: flex-start; padding: 16px 0;
  border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: 0; }
.step::before { counter-increment: s; content: counter(s); flex: none; width: 30px; height: 30px;
  border-radius: 8px; background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent2); font-weight: 700; display: flex; align-items: center;
  justify-content: center; font-size: 14px; }
.step h3 { margin: 2px 0 4px; font-size: 16px; }
.step p { color: var(--muted); font-size: 16px; margin: 0; }

/* product visual: browser-frame mock */
.frame { border: 1px solid var(--line2); border-radius: 14px; background: var(--panel2);
  overflow: hidden; box-shadow: var(--glow); }
.frame-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line);
  background: var(--panel); }
.frame-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line2); }
.frame-body { padding: 22px; }
.badge-ok { color: var(--ok); font-weight: 700; }
.dimmed { color: var(--faint); }

/* pricing */
.price { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; margin: 4px 0; }
.avail { font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .6px;
  color: var(--faint); }

/* ---------- forms ---------- */
input, textarea, select {
  background: var(--panel2); border: 1px solid var(--line); color: var(--ink);
  border-radius: 9px; padding: 12px 14px; font-size: 15px; width: 100%; min-height: 44px;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-color: var(--accent); }
label { display: flex; flex-direction: column; gap: 6px; color: var(--muted);
  font-size: 13.5px; font-weight: 550; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.form-narrow { max-width: 480px; }
.radio-cards { display: grid; gap: 10px; }
.radio-card { display: flex; gap: 12px; align-items: flex-start; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px; cursor: pointer; background: var(--panel);
  flex-direction: row; color: var(--ink); font-size: 14.5px; }
.radio-card:hover { border-color: var(--line2); }
.radio-card input { width: auto; min-height: 0; margin-top: 3px; }
.radio-card:has(input:checked) { border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel)); }
.radio-card b { display: block; }
.radio-card span { color: var(--muted); font-size: 13.5px; font-weight: 400; }

/* ---------- tables / misc ---------- */
.tbl { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14.5px; }
.tbl th, .tbl td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line);
  vertical-align: top; }
.tbl th { color: var(--faint); font-weight: 600; font-size: 12px; text-transform: uppercase;
  letter-spacing: .6px; }
.material, .feedback { background: var(--panel2); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px; white-space: pre-wrap; color: var(--muted); font-size: 13.5px; }
.notice { background: color-mix(in srgb, var(--accent) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--ink); border-radius: 12px; padding: 14px 18px; }
.notice.big h1 { margin: 0 0 6px; }
.error { color: var(--err); }
.ok { color: var(--ok); } .warn { color: var(--warn); }
.fine { color: var(--faint); font-size: 13px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 12.5px;
  word-break: break-all; }
.box { background: var(--panel2); border: 1px solid var(--line); padding: 10px 12px;
  border-radius: 8px; }
.narrow { max-width: 700px; margin: 0 auto; }
.wide { max-width: 1120px; margin: 0 auto; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 820px) { .cols { grid-template-columns: 1fr; } section.alt { padding: 32px 20px; } }
.result { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
.tagline2 { font-size: 21px; color: var(--brand); font-weight: 700; }
.foot { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 96px; }
.foot-inner { max-width: 1120px; margin: 0 auto; padding: 52px 24px 30px;
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 30px; }
.foot h4 { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--faint);
  margin: 0 0 12px; }
.foot a { display: block; color: var(--muted); font-size: 14px; padding: 4px 0; }
.foot a:hover { color: var(--ink); }
.foot .tag { color: var(--faint); font-size: 14px; max-width: 280px; margin-top: 10px; }
.foot-bottom { max-width: 1120px; margin: 0 auto; padding: 16px 24px 26px;
  border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px;
  flex-wrap: wrap; color: var(--faint); font-size: 13px; }
@media (max-width: 820px) { .foot-inner { grid-template-columns: 1fr 1fr; } }

/* ---------- vibrancy layer (landing) ---------- */

/* terminal */
.term-frame { box-shadow: 0 0 0 1px rgba(94,106,210,.18), 0 12px 44px rgba(77,182,198,.10); }
.term-title { margin-left: auto; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px; color: var(--faint); }
.term { background: #0b0c10; color: #c9d1d9; font-family: ui-monospace, "SF Mono", Menlo,
  Consolas, monospace; font-size: 15.5px; line-height: 1.85; min-height: 178px;
  border-radius: 0 0 14px 14px; }
.t-line { white-space: pre-wrap; word-break: break-word; }
.t-cmd { color: #7fd4e0; }
.t-ok { color: #4cc38a; font-weight: 700; }
.t-line.t-ok { color: #a7f3d0; }
.t-line.t-ok .t-ok, .t-ok { color: #4cc38a; }
.t-line.t-in { color: #e5c07b; }
.t-in { color: #e5a13c; font-weight: 700; }
.t-pop { animation: tpop .28s ease-out; }
@keyframes tpop { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.t-caret { display: inline-block; width: 8px; height: 16px; background: #4db6c6;
  vertical-align: -2px; animation: blink 1.05s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ticker */
.ticker { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden; padding: 13px 0; white-space: nowrap; position: relative; }
.ticker-inner { display: inline-flex; gap: 34px; padding-right: 34px; font-size: 14px;
  color: var(--muted); }
.ticker-run .ticker-inner { animation: tickscroll 26s linear infinite; }
.ticker-inner b { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 700; background: linear-gradient(90deg, var(--brand), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.tick-sep { color: var(--faint); }
@keyframes tickscroll { to { transform: translateX(-50%); } }
.ticker:hover .ticker-inner { animation-play-state: paused; }

/* loop steps: check chips */
.chip-ok { display: inline-flex; align-items: center; margin-left: 10px; font-size: 11.5px;
  font-weight: 700; color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--ok) 32%, transparent);
  padding: 2.5px 9px; border-radius: 999px; vertical-align: 2px; white-space: nowrap; }
.loop-steps .step h3 { display: flex; align-items: center; flex-wrap: wrap; }

/* feature cards */
.feat-grid { gap: 16px; }
.card.feat { position: relative; overflow: hidden; }
.card.feat::after { content: ""; position: absolute; inset: auto -30% -55% -30%; height: 70%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 16%, transparent),
  transparent); opacity: 0; transition: opacity .25s ease; pointer-events: none; }
.card.feat:hover::after { opacity: 1; }
.card.feat:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  transform: translateY(-2px); }
.card.feat { transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease; }
.feat-emoji { font-size: 24px; line-height: 1; margin-bottom: 10px; }
.feat-tag { display: inline-block; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10.5px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--brand);
  margin: -2px 0 6px; }

/* final CTA */
.cta-final { text-align: center; padding: 44px 24px;
  background:
    radial-gradient(420px 160px at 50% -20%, color-mix(in srgb, var(--accent) 22%, transparent),
    transparent), var(--panel); }

/* reveal on scroll - animates in, never hides content (safe for crawlers/no-JS) */
.reveal.revealed { animation: rise .55s ease both; }
@keyframes rise { from { opacity: .35; transform: translateY(12px); }
  to { opacity: 1; transform: none; } }

/* stronger hero glow */
.hero h1 { text-wrap: balance; }

@media (prefers-reduced-motion: reduce) {
  .ticker-run .ticker-inner { animation: none; }
  .reveal.revealed { animation: none; }
  .t-caret { animation: none; }
}

/* terminal: colorful emoji lines + emoji-safe font stack */
.term, .feat-emoji { font-family: ui-monospace, "SF Mono", Menlo, Consolas,
  "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", monospace; }
.feat-emoji { font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji",
  "Inter", sans-serif; }
.t-line.t-l1 { color: #7fd4e0; }
.t-line.t-l2 { color: #b3a1f7; }
.t-line.t-l3 { color: #e5c07b; }
.t-line.t-l4 { color: #7ee2a8; }
.t-line.t-l5 { color: #4db6c6; }
.tick-sep { margin: 0 2px; }

/* ---------- statband (replaces ticker) ---------- */
.statband { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 24px 8px; margin-bottom: 8px; }
.stat { text-align: center; }
.stat .v { display: block; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 27px; font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--brand), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .l { display: block; margin-top: 5px; color: var(--faint); font-size: 13px; }
@media (max-width: 760px) { .statband { grid-template-columns: repeat(3, 1fr); row-gap: 20px; } }

/* ---------- playground ---------- */
.pg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .pg-grid { grid-template-columns: 1fr; } }
.pg-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; }
.pg-head { font-weight: 700; font-size: 15.5px; display: flex; align-items: center; gap: 9px;
  margin-bottom: 12px; }
.pg-badge { font-size: 10.5px; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--accent2); background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 2px 8px; border-radius: 999px; }
.chat { display: flex; flex-direction: column; gap: 10px; max-height: 340px; overflow-y: auto;
  padding: 4px 2px; }
.bbl { padding: 10px 14px; border-radius: 14px; font-size: 15.5px; line-height: 1.5; max-width: 94%; }
.bbl.engine { background: var(--panel2); border: 1px solid var(--line);
  align-self: flex-start; border-bottom-left-radius: 4px; }
.bbl.user { background: color-mix(in srgb, var(--accent) 18%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  align-self: flex-end; border-bottom-right-radius: 4px; }
.bbl.typing { display: inline-flex; gap: 5px; padding: 12px 16px; }
.bbl.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--faint);
  animation: tp 1s infinite; }
.bbl.typing i:nth-child(2) { animation-delay: .15s; }
.bbl.typing i:nth-child(3) { animation-delay: .3s; }
@keyframes tp { 0%,100% { opacity: .3; transform: none; } 50% { opacity: 1; transform: translateY(-3px); } }
.pg-controls { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.opt-btn { text-align: left; background: var(--panel2); border: 1px solid var(--line);
  color: var(--ink); border-radius: 10px; padding: 11px 14px; font-size: 15px;
  min-height: 44px; font-weight: 500; display: block; }
.opt-btn:hover { border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel)); transform: none; }
.score-chip { display: inline-flex; align-items: center; font-weight: 800; font-size: 12.5px;
  padding: 2px 10px; border-radius: 999px; margin-right: 6px; }
.score-chip.good { color: #0e9f6e; background: color-mix(in srgb, #0e9f6e 14%, transparent);
  border: 1px solid color-mix(in srgb, #0e9f6e 35%, transparent); }
.score-chip.mid { color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent); }
.score-chip.low { color: var(--err); background: color-mix(in srgb, var(--err) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--err) 30%, transparent); }
.remember { margin-top: 9px; background: color-mix(in srgb, var(--brand) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 26%, transparent);
  border-radius: 10px; padding: 9px 12px; font-size: 14.5px; }
.remember ul { margin: 5px 0 0; padding-left: 18px; }
.pg-note { margin-top: 12px; }
.vcred { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  background: var(--panel2); margin-bottom: 12px; }
.vcred-row { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0;
  font-size: 15px; }
.vcred-row span { color: var(--faint); }
.vsteps { display: flex; flex-direction: column; gap: 7px; margin: 4px 0 8px; font-size: 15px; }
.vstep-line { color: var(--muted); }
.vstamp { display: none; margin: 10px 0 4px; font-size: 19px; font-weight: 800; color: var(--ok); }
.vstamp.show { display: block; animation: stampin .35s ease-out; }
@keyframes stampin { from { opacity: 0; transform: scale(.85); } to { opacity: 1; transform: scale(1); } }

/* ---------- topic tabs (engine sessions) ---------- */
.ttabs { display: flex; flex-wrap: wrap; gap: 10px; margin: 4px 0 16px; }
.ttab { display: inline-flex; align-items: center; gap: 7px; padding: 10px 18px;
  font-size: 14.5px; font-weight: 700; color: var(--ink); cursor: pointer;
  background: var(--panel); border: 1.5px solid var(--line2); border-radius: 999px;
  min-height: 44px; transition: transform .12s ease, border-color .15s ease,
  background .15s ease, box-shadow .15s ease; }
.ttab:hover { transform: translateY(-2px); border-color: var(--accent);
  box-shadow: 0 4px 18px color-mix(in srgb, var(--accent) 25%, transparent); }
.ttab.active { background: var(--accent); color: #fff; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent),
  0 6px 22px color-mix(in srgb, var(--accent) 45%, transparent); }
.ttab.attn:not(.active) { animation: ttabpulse 1.6s ease-in-out 2; }
@keyframes ttabpulse {
  0%, 100% { border-color: var(--line2); box-shadow: none; }
  50% { border-color: var(--brand);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 22%, transparent); }
}
.t-dim, .t-line.t-dim { color: #8a8fa3; font-size: 14px; }
.sec-sub b { color: var(--ink); }