/* ════════════════════════════════════════════════════════════
   Divergent Logic — umbrella site. Deep-space expressive theme.
   The metaphor: striking and calm on the surface; the longer you
   look, the more connection and depth reveal themselves.
   ════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--sky-1);
  color: var(--on-sky);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(95,199,224,0.3); color: #fff; }

/* deep gradient wash under the canvas */
.bg-wash {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(1200px 800px at 78% -8%, rgba(255,122,45,0.10), transparent 60%),
    radial-gradient(1000px 760px at 12% 8%, rgba(86,129,238,0.16), transparent 58%),
    radial-gradient(1100px 900px at 60% 108%, rgba(63,182,168,0.12), transparent 60%),
    linear-gradient(180deg, var(--sky-0), var(--sky-1) 32%, var(--sky-1) 70%, var(--sky-0));
}
#sky { position: fixed; inset: 0; z-index: 1; pointer-events: none; }
.grain {
  position: fixed; inset: 0; z-index: 2; pointer-events: none; opacity: 0.04; mix-blend-mode: screen;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
main, .site-nav, .site-footer { position: relative; z-index: 3; }

.wrap { width: var(--container); margin: 0 auto; }
.narrow { max-width: 760px; }

/* ── eyebrow / kicker ──────────────────────────────────────── */
.kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--on-sky-muted);
  display: inline-flex; align-items: center; gap: 10px;
}
.kicker::before { content: ""; width: 22px; height: 1px; background: currentColor; opacity: 0.6; }

/* ════════ NAV ════════ */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 48px);
  transition: background var(--duration) var(--ease-out), backdrop-filter var(--duration), border-color var(--duration);
  border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
  background: rgba(8,13,26,0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom-color: var(--sky-line);
}
.brand-lock { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-lock img { width: 36px; height: 36px; filter: drop-shadow(0 4px 14px rgba(86,129,238,0.5)); }
.brand-lock .wm { display: flex; flex-direction: column; line-height: 1; }
.brand-lock .wm b { font-family: var(--font-display); font-weight: 600; letter-spacing: 0.2em; font-size: 14px; color: #fff; }
.brand-lock .wm span { font-family: var(--font-display); font-weight: 300; letter-spacing: 0.4em; font-size: 10px; color: var(--slate-blue); margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--on-sky-muted); text-decoration: none; font-size: var(--text-sm); font-weight: 600; transition: color var(--duration-fast); }
.nav-links a:hover { color: #fff; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px; min-height: 42px; padding: 0 18px;
  border-radius: var(--radius-pill); border: 1px solid rgba(199,213,250,0.25);
  background: rgba(199,213,250,0.05); color: #fff;
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); text-decoration: none;
  transition: border-color var(--duration-fast), background var(--duration-fast), transform var(--duration-fast);
}
.nav-cta:hover { border-color: var(--spectrum-blue); background: rgba(86,129,238,0.18); transform: translateY(-1px); }

/* hamburger (mobile only) */
.nav-toggle { display: none; width: 42px; height: 42px; flex: none;
  border: 1px solid var(--sky-line); border-radius: 12px; background: rgba(199,213,250,0.05);
  cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.nav-toggle span { width: 18px; height: 2px; background: #fff; border-radius: 2px; transition: transform .3s var(--ease-out), opacity .2s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(8,13,26,0.97); backdrop-filter: blur(16px) saturate(1.2);
    border-bottom: 1px solid var(--sky-line); padding: 6px 0 14px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px clamp(20px, 5vw, 40px); font-size: 1.02rem; }
  .nav-links .nav-cta { margin: 12px clamp(20px, 5vw, 40px) 0; justify-content: center; min-height: 48px; }
}

/* ════════ HERO ════════ */
.hero { min-height: 100svh; display: grid; align-items: center; padding: 120px 0 90px; }
.hero .wrap { max-width: 1000px; }
.hero-eyebrow { margin-bottom: 26px; }
.hero h1 {
  font-family: var(--font-expressive);
  font-weight: 700;
  font-size: clamp(2.8rem, 8vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--on-sky-strong);
  margin: 0 0 28px;
  text-wrap: balance;
}
.hero h1 .shimmer {
  background: linear-gradient(100deg, var(--spectrum-sky), var(--spectrum-blue) 30%, var(--spectrum-violet) 55%, var(--spectrum-amber));
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: pan 9s ease-in-out infinite;
}
.hero h1 .line { display: block; }
.hero-sub {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--on-sky);
  max-width: 600px; margin: 0 0 38px; line-height: 1.5;
}
.hero-sub b { color: #fff; font-weight: 700; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 10px; min-height: 54px; padding: 0 28px;
  border-radius: var(--radius-pill); font-family: var(--font-display); font-weight: 600; font-size: var(--text-md);
  text-decoration: none; cursor: pointer; transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast), background var(--duration-fast);
}
.btn-primary { background: var(--spectrum-blue); color: #fff; border: 1px solid transparent; box-shadow: 0 14px 40px rgba(86,129,238,0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 54px rgba(86,129,238,0.55); }
.btn-ghost { background: transparent; color: var(--on-sky-strong); border: 1px solid rgba(199,213,250,0.25); }
.btn-ghost:hover { border-color: rgba(199,213,250,0.55); transform: translateY(-2px); }

.scroll-cue {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  display: grid; justify-items: center; gap: 8px; color: var(--on-sky-faint);
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
}
.scroll-cue .dot { width: 22px; height: 36px; border: 1.5px solid rgba(199,213,250,0.3); border-radius: 999px; position: relative; }
.scroll-cue .dot::after { content:""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%); width: 4px; height: 7px; border-radius: 999px; background: var(--spectrum-sky); animation: cue 1.8s var(--ease-in-out) infinite; }

/* ════════ SECTION SCAFFOLD ════════ */
section { padding: clamp(80px, 12vh, 150px) 0; }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.08; letter-spacing: -0.02em;
  color: var(--on-sky-strong); margin: 18px 0 0; text-wrap: balance;
}
.sec-head p { font-size: var(--text-md); color: var(--on-sky-muted); margin: 16px 0 0; }

/* reveal-on-scroll — transform-only so content is never hidden if the
   timeline is frozen (static capture); real browsers get the smooth rise. */
.reveal { transform: translateY(20px); transition: transform 0.9s var(--ease-out); }
.reveal.in { transform: none; }
.reveal[data-delay="1"]{ transition-delay: 0.08s; }
.reveal[data-delay="2"]{ transition-delay: 0.16s; }
.reveal[data-delay="3"]{ transition-delay: 0.24s; }

/* ════════ REFRAME ════════ */
.reframe { }
.reframe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 4vw, 56px); align-items: center; }
.reframe-assumes { display: grid; gap: 14px; }
.assume {
  border: 1px solid var(--sky-line); border-radius: var(--radius-lg);
  background: rgba(17,26,46,0.5); padding: 18px 20px; position: relative;
  font-size: var(--text-md); color: var(--on-sky-muted);
}
.assume .strike { position: relative; transition: color 0.5s ease; }
.assume.struck .strike { color: var(--on-sky-faint); }
.assume .strike::after {
  content: ""; position: absolute; left: -2px; top: 52%; height: 2px; width: 0;
  background: var(--spectrum-amber); border-radius: 2px; transition: width 0.7s var(--ease-out);
}
.assume.struck .strike::after { width: calc(100% + 4px); }
.reframe-truth {
  border-radius: var(--radius-xl); padding: clamp(26px, 3vw, 40px);
  background: linear-gradient(160deg, rgba(86,129,238,0.16), rgba(63,182,168,0.10));
  border: 1px solid rgba(95,199,224,0.25);
}
.reframe-truth .kicker { color: var(--spectrum-sky); margin-bottom: 16px; }
.reframe-truth p { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.4rem, 2.6vw, 2rem); line-height: 1.28; color: var(--on-sky-strong); margin: 0; text-wrap: balance; }
.reframe-truth p em { font-style: normal; color: var(--spectrum-sky); }
@media (max-width: 820px){ .reframe-grid { grid-template-columns: 1fr; } }

/* ════════ SPECTRUM / PRODUCTS ════════ */
.spectrum-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product {
  --hue: var(--spectrum-blue);
  position: relative; border-radius: var(--radius-xl); overflow: hidden;
  border: 1px solid var(--sky-line); background: linear-gradient(180deg, rgba(24,35,61,0.7), rgba(11,18,32,0.7));
  padding: 28px; display: flex; flex-direction: column; gap: 16px; cursor: pointer;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration), box-shadow var(--duration);
  min-height: 340px;
}
.product::before {
  content: ""; position: absolute; inset: 0; opacity: 0.0; pointer-events: none;
  background: radial-gradient(420px 280px at 50% -10%, var(--hue), transparent 70%);
  transition: opacity var(--duration) var(--ease-out); mix-blend-mode: screen;
}
.product:hover { transform: translateY(-8px); border-color: color-mix(in oklab, var(--hue) 55%, transparent); box-shadow: 0 30px 70px rgba(0,0,0,0.5); }
.product:hover::before { opacity: 0.28; }
.product .picon { width: 72px; height: 72px; border-radius: 18px; object-fit: cover; box-shadow: 0 12px 30px rgba(0,0,0,0.5); }
.product .ptop { display: flex; align-items: flex-start; justify-content: space-between; }
.product h3 { font-family: var(--font-display); font-weight: 600; font-size: var(--text-xl); color: #fff; margin: 0; }
.product .ptag { font-family: var(--font-mono); font-size: 11px; color: var(--on-sky-muted); margin-top: 4px; }
.product p { font-size: var(--text-base); color: var(--on-sky); margin: 0; }
.product .status {
  align-self: flex-start; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; border: 1px solid color-mix(in oklab, var(--hue) 45%, transparent);
  color: color-mix(in oklab, var(--hue) 78%, white); background: color-mix(in oklab, var(--hue) 14%, transparent);
}
.product .more { margin-top: auto; display: flex; align-items: center; gap: 8px; color: color-mix(in oklab, var(--hue) 80%, white); font-weight: 600; font-size: var(--text-sm); }
.product .more svg { transition: transform var(--duration-fast); }
.product:hover .more svg { transform: translateX(4px); }
.product .reveal-detail { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--duration-slow) var(--ease-out); }
.product.open .reveal-detail { grid-template-rows: 1fr; }
.product .reveal-detail > div { overflow: hidden; }
.product .reveal-detail ul { list-style: none; margin: 14px 0 0; padding: 14px 0 0; border-top: 1px solid var(--sky-line); display: grid; gap: 9px; }
.product .reveal-detail li { display: flex; gap: 10px; align-items: flex-start; font-size: var(--text-sm); color: var(--on-sky-muted); }
.product .reveal-detail li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 7px; border-radius: 999px; background: var(--hue); box-shadow: 0 0 10px var(--hue); }
@media (max-width: 860px){ .spectrum-grid { grid-template-columns: 1fr; } }

/* ════════ DESIGN PRINCIPLES ════════ */
.design-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.principle {
  border: 1px solid var(--sky-line); border-radius: var(--radius-lg); padding: 26px;
  background: rgba(17,26,46,0.42); position: relative; overflow: hidden;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration);
}
.principle:hover { transform: translateY(-5px); border-color: rgba(199,213,250,0.28); }
.principle .pn { font-family: var(--font-mono); font-size: 12px; color: var(--spectrum-violet); letter-spacing: 0.12em; }
.principle h4 { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); color: #fff; margin: 14px 0 8px; }
.principle p { font-size: var(--text-sm); color: var(--on-sky-muted); margin: 0; }
@media (max-width: 860px){ .design-grid { grid-template-columns: 1fr; } }

/* ════════ PROMISE ════════ */
.promise { text-align: center; }
.promise .wrap { max-width: 900px; }
.promise-list { display: grid; gap: 4px; margin-top: 40px; }
.promise-line {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.4rem, 3.4vw, 2.5rem); line-height: 1.5; letter-spacing: -0.01em;
  color: var(--on-sky-muted); transition: color 0.6s var(--ease-out), filter 0.6s;
}
.promise-line.in { color: var(--on-sky-strong); }
.promise-line .hl { color: var(--spectrum-sky); }
.promise-line.anti .hl { color: var(--spectrum-amber); }

/* ════════ GLOSSARY (deepest layer) ════════ */
.glossary-list { display: grid; gap: 12px; margin-top: 12px; }
.term {
  border: 1px solid var(--sky-line); border-radius: var(--radius-lg); overflow: hidden;
  background: rgba(17,26,46,0.42); transition: border-color var(--duration);
}
.term:hover { border-color: rgba(199,213,250,0.22); }
.term button {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: 0; cursor: pointer; padding: 20px 24px; text-align: left;
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); color: #fff;
}
.term .sign { flex: none; width: 26px; height: 26px; position: relative; }
.term .sign::before, .term .sign::after { content: ""; position: absolute; left: 50%; top: 50%; background: var(--spectrum-sky); border-radius: 2px; transition: transform var(--duration) var(--ease-out); }
.term .sign::before { width: 14px; height: 2px; transform: translate(-50%,-50%); }
.term .sign::after { width: 2px; height: 14px; transform: translate(-50%,-50%); }
.term.open .sign::after { transform: translate(-50%,-50%) scaleY(0); }
.term .body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--duration-slow) var(--ease-out); }
.term.open .body { grid-template-rows: 1fr; }
.term .body > div { overflow: hidden; }
.term .body p { margin: 0; padding: 0 24px 22px; color: var(--on-sky-muted); font-size: var(--text-base); max-width: 60ch; }

/* ════════ FOOTER ════════ */
.site-footer { padding: 80px 0 48px; border-top: 1px solid var(--sky-line); margin-top: 40px; }
.footer-cta {
  border-radius: var(--radius-2xl); padding: clamp(34px, 5vw, 64px);
  background: linear-gradient(150deg, rgba(86,129,238,0.2), rgba(255,122,45,0.12) 90%);
  border: 1px solid rgba(199,213,250,0.18); text-align: center; margin-bottom: 64px;
}
.footer-cta h2 { font-family: var(--font-expressive); font-weight: 700; font-size: clamp(2rem, 5vw, 3.4rem); color: #fff; margin: 0 0 14px; letter-spacing: -0.02em; }
.footer-cta p { color: var(--on-sky); font-size: var(--text-md); margin: 0 auto 28px; max-width: 540px; }
.footer-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; color: var(--on-sky-faint); font-size: var(--text-sm); }
.footer-bar .links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-bar a { color: var(--on-sky-muted); text-decoration: none; }
.footer-bar a:hover { color: #fff; }

/* ── animations ── */
@keyframes rise { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
@keyframes pan { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
@keyframes cue { 0% { opacity: 0; transform: translate(-50%, 0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, 12px); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-eyebrow, .hero h1 .line, .hero-sub, .hero-actions, .scroll-cue { opacity: 1; animation: none; }
}

/* product → world "enter" button (revealed when a product card opens) */
.product .enter {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  margin-top: 16px; padding: 11px 18px; border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--hue) 82%, white); color: #06121a;
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm);
  text-decoration: none; transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast);
}
.product .enter:hover { transform: translateX(3px); box-shadow: 0 10px 26px color-mix(in oklab, var(--hue) 40%, transparent); }