:root {
  --bg: #0b1622;
  --bg-2: #0e1a28;
  --panel: #14202e;
  --panel-2: #182a3c;
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.14);
  --ink: #e8eef6;
  --ink-mut: #93a6ba;
  --ink-dim: #6c8298;
  --teal: #2fd4bf;
  --teal-2: #38e0cb;
  --gold: #ecc06a;
  --gold-2: #f2cf87;
  --radius: 10px;
  --wrap: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo, monospace;
}

/* line icons */
.ico { width: 22px; height: 22px; }
.ico-chip { width: 46px; height: 46px; border-radius: 11px; display: grid; place-items: center; border: 1px solid var(--line-2); background: rgba(47, 212, 191, 0.05); color: var(--teal); }
.ico-sm { width: 15px; height: 15px; flex: none; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-2); }
h1, h2, h3, h4 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 780px; }
.accent-gold { color: var(--gold); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px;
  background: rgba(11, 22, 34, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; }
.brand-mark {
  width: 18px; height: 18px; border-radius: 5px;
  background: linear-gradient(135deg, var(--teal), var(--gold));
  box-shadow: 0 0 18px rgba(47, 212, 191, 0.5);
}
.brand-name { font-size: 1.08rem; letter-spacing: -0.01em; }
.brand-logo { height: 24px; width: auto; display: block; }
.footer-brand .brand-logo { height: 28px; }
.nav-links { display: flex; gap: 22px; margin-left: 12px; }
.nav-links a { color: var(--ink-mut); font-size: 0.92rem; font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { margin-left: auto; }

/* BUTTONS */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 0.95rem; cursor: pointer; border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn { border-radius: 8px; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--teal); color: #052a25; box-shadow: 0 6px 16px rgba(47, 212, 191, 0.16); }
.btn-primary:hover { background: var(--teal-2); color: #052a25; }
.btn-ghost { background: transparent; border-color: var(--line-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.nav-cta.btn { padding: 9px 16px; font-size: 0.88rem; }

/* HERO */
.hero { padding: 84px 0 72px; background: radial-gradient(1100px 460px at 78% -8%, rgba(47, 212, 191, 0.11), transparent 60%), radial-gradient(760px 380px at 6% 6%, rgba(236, 192, 106, 0.07), transparent 55%); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.eyebrow { font-family: var(--mono); color: var(--teal); font-weight: 500; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.2em; margin-bottom: 20px; }
.hero h1 { font-size: clamp(2.4rem, 5.4vw, 3.9rem); font-weight: 800; }
.lede { margin-top: 22px; font-size: 1.16rem; color: var(--ink-mut); max-width: 40ch; }
.lede strong { color: var(--ink); }
.hero-btns { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero-tag { margin-top: 26px; font-size: 0.9rem; color: var(--ink-dim); }

/* hero flow visual */
.hero-visual { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.flow { display: flex; align-items: stretch; gap: 4px; width: 100%; }
.flow-node { flex: 1; text-align: center; padding: 24px 14px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.flow-node.private { border-color: var(--line-2); }
.flow-node.public { border-color: rgba(236, 192, 106, 0.35); box-shadow: 0 0 30px rgba(236, 192, 106, 0.09); }
.flow-ico { color: var(--teal); display: flex; justify-content: center; }
.flow-ico.gold { color: var(--gold); }
.flow-ico .ico { width: 30px; height: 30px; }
.flow-label { font-weight: 700; margin-top: 12px; font-size: 0.98rem; }
.flow-sub { font-size: 0.78rem; color: var(--ink-dim); margin-top: 4px; }
.flow-arrow { flex: none; position: relative; width: 62px; display: flex; align-items: center; justify-content: center; }
.flow-arrow::before { content: ""; position: absolute; left: 6px; right: 6px; top: 50%; height: 1px; background: repeating-linear-gradient(90deg, var(--line-2) 0 3px, transparent 3px 7px); }
.flow-arrow span { position: relative; background: var(--bg); padding: 3px 5px; font-family: var(--mono); font-size: 0.56rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-dim); }
.flow-caption { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.02em; color: var(--ink-dim); }

/* BANDS */
.band { padding: 74px 0; border-top: 1px solid var(--line); }
.band.alt { background: var(--bg-2); }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.kicker, .eyebrow.kicker { font-family: var(--mono); color: var(--teal); font-weight: 500; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.2em; }
.kicker { display: block; margin-bottom: 14px; }
.section-head h2 { font-size: clamp(1.7rem, 3.3vw, 2.4rem); font-weight: 800; }
.section-sub { margin-top: 16px; color: var(--ink-mut); font-size: 1.05rem; }

/* CARDS */
.cards { display: grid; gap: 18px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: border-color 0.2s ease, transform 0.2s ease; }
.card:hover { border-color: var(--line-2); transform: translateY(-3px); }
.card .ico-chip { margin-bottom: 18px; }
.card h3 { margin: 0 0 8px; font-size: 1.12rem; }
.card p { color: var(--ink-mut); font-size: 0.96rem; }
.mini { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.mini h4 { color: var(--gold); font-size: 1.02rem; margin-bottom: 8px; }
.mini p { color: var(--ink-mut); font-size: 0.92rem; }

/* TOGGLE */
.toggle-wrap { max-width: 720px; margin: 0 auto; }
.toggle { display: flex; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 5px; gap: 5px; }
.toggle-btn { flex: 1; padding: 12px; border: none; border-radius: 8px; background: transparent; color: var(--ink-mut); font-weight: 600; font-size: 0.98rem; cursor: pointer; font-family: var(--font); transition: all 0.2s ease; }
.toggle-btn.active { background: var(--panel-2); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.toggle-panel { margin-top: 18px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.toggle-panel.hidden { display: none; }
.panel-title { font-weight: 700; font-size: 1.15rem; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.panel-eg { color: var(--ink-dim); font-weight: 500; font-size: 0.9rem; }
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.dot.public { background: var(--gold); }
.dot.perm { background: var(--teal); }
.panel-list { margin: 0; padding-left: 20px; }
.panel-list li { color: var(--ink-mut); margin: 9px 0; }
.panel-list b { color: var(--ink); }

/* STEPS */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; max-width: 820px; margin: 0 auto; }
.step { display: flex; gap: 20px; align-items: flex-start; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.step-num { flex: none; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; background: linear-gradient(135deg, rgba(47,212,191,0.18), rgba(236,192,106,0.12)); color: var(--teal); border: 1px solid var(--line-2); }
.step h3 { font-size: 1.1rem; margin-bottom: 4px; }
.step p { color: var(--ink-mut); font-size: 0.96rem; }
.step b { color: var(--ink); }
.note { max-width: 820px; margin: 20px auto 0; padding: 18px 22px; border-radius: var(--radius); background: rgba(47, 212, 191, 0.07); border: 1px solid rgba(47, 212, 191, 0.22); color: var(--ink-mut); font-size: 0.96rem; }
.note b { color: var(--teal-2); }

/* COMPARE TABLE */
.table-scroll { overflow-x: auto; max-width: 880px; margin: 0 auto; }
.compare { width: 100%; border-collapse: collapse; min-width: 560px; }
.compare th, .compare td { text-align: left; padding: 15px 18px; border-bottom: 1px solid var(--line); font-size: 0.96rem; }
.compare thead th { font-size: 1.05rem; font-weight: 700; }
.compare thead th span { display: block; font-size: 0.72rem; font-weight: 500; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.1em; }
.compare tbody th { color: var(--ink-mut); font-weight: 600; }
.compare td { color: var(--ink-mut); }
.compare .hl { color: var(--ink); background: rgba(47, 212, 191, 0.06); }
.compare thead .hl { color: var(--teal); }
.compare thead .hl span { color: var(--teal); opacity: 0.8; }

/* KILLER */
.killer { background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.killer-card { max-width: 900px; margin: 0 auto; text-align: center; }
.killer-card > h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin: 8px 0 6px; }
.killer-lede { color: var(--ink-mut); margin-bottom: 34px; font-size: 1.05rem; }
.killer .cards.three { text-align: left; }
.killer .card em { color: var(--gold-2); font-style: normal; }

/* USE CASES */
.cards.use { grid-template-columns: repeat(2, 1fr); }
.usecard { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: border-color 0.2s ease, transform 0.2s ease; }
.usecard:hover { border-color: var(--teal); transform: translateY(-3px); }
.use-tag { display: inline-block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; color: var(--teal); background: rgba(47, 212, 191, 0.1); border: 1px solid rgba(47, 212, 191, 0.2); padding: 4px 10px; border-radius: 20px; margin-bottom: 14px; }
.usecard h3 { font-size: 1.18rem; margin-bottom: 8px; }
.usecard p { color: var(--ink-mut); font-size: 0.96rem; }
.usecard b { color: var(--ink); }

/* LIVE */
.live { background: var(--bg-2); }
.live-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 44px; align-items: center; }
.live-grid h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); margin: 10px 0 14px; }
.live-grid p { color: var(--ink-mut); margin-bottom: 24px; }
.live-grid em { color: var(--gold-2); font-style: normal; }
.live-demo-card { background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 22px; box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.ldc-row { display: flex; justify-content: space-between; align-items: center; padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.ldc-role { font-weight: 700; }
.ldc-lock, .ldc-full { display: inline-flex; align-items: center; gap: 7px; }
.ldc-lock { color: var(--gold); }
.ldc-full { color: var(--teal); }
.ldc-foot { padding-top: 14px; font-size: 0.8rem; color: var(--ink-dim); font-family: ui-monospace, "SF Mono", Menlo, monospace; }

/* FAQ */
.accordion details { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; background: var(--panel); overflow: hidden; }
.accordion summary { padding: 18px 22px; cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: ""; width: 8px; height: 8px; margin-right: 4px; border-right: 1.6px solid var(--teal); border-bottom: 1.6px solid var(--teal); transform: rotate(45deg); transition: transform 0.2s ease; }
.accordion details[open] summary::after { transform: rotate(-135deg); }
.accordion details p { padding: 0 22px 20px; color: var(--ink-mut); font-size: 0.96rem; }

/* FOOTER */
.footer { border-top: 1px solid var(--line); padding: 48px 0 30px; background: var(--bg-2); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
.footer-brand { margin-bottom: 10px; }
.footer-tag { color: var(--ink-mut); font-size: 0.94rem; max-width: 34ch; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-mut); font-size: 0.92rem; }
.footer-links a:hover { color: var(--ink); }
.footer-legal { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--ink-dim); font-size: 0.82rem; }

/* REVEAL */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 440px; }
  .cards.three, .cards.four, .cards.use { grid-template-columns: 1fr 1fr; }
  .live-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .cards.three, .cards.four, .cards.use { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .band { padding: 56px 0; }
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}