/* ============================================================
   Components & sections
   ============================================================ */

/* ---------- top nav ---------- */
.nav{
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  background: rgba(20,18,16,0.72);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom-color: var(--line);
}
.nav__inner{
  display:flex; align-items:center; justify-content:space-between;
  height: 70px;
}
.brand{ display:flex; align-items:center; gap:12px; font-family:var(--font-display); font-weight:600; letter-spacing:-0.02em; font-size:17px; }
.brand small{ color:var(--ink-dim); font-family:var(--font-mono); font-weight:400; font-size:11px; letter-spacing:0.12em; text-transform:uppercase; }

.nav__links{ display:flex; align-items:center; gap:30px; }
.nav__links a{ font-size:14.5px; color:var(--ink-2); transition:color .3s var(--ease); position:relative; white-space:nowrap; }
.nav__links a:hover{ color:var(--ink); }
.nav__links a::after{ content:""; position:absolute; left:0; bottom:-5px; width:0; height:1px; background:var(--signal); transition:width .3s var(--ease); }
.nav__links a:hover::after{ width:100%; }
.nav__cta{ padding:9px 16px; border:1px solid var(--line-2); border-radius:2px; font-weight:600; color:var(--ink); }
.nav__cta:hover{ background:rgba(243,238,228,.05); }
.nav__burger{ display:none; }

/* mobile menu */
.nav__burger{ width:42px; height:42px; border:1px solid var(--line-2); border-radius:2px; background:transparent; cursor:pointer; place-items:center; gap:5px; flex-direction:column; }
.nav__burger span{ display:block; width:18px; height:1.5px; background:var(--ink); transition:transform .3s var(--ease), opacity .3s var(--ease); }
.nav.menu-open .nav__burger span:nth-child(1){ transform:translateY(3.25px) rotate(45deg); }
.nav.menu-open .nav__burger span:nth-child(2){ opacity:0; }
.nav.menu-open .nav__burger span:nth-child(3){ transform:translateY(-3.25px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero{ position:relative; min-height: 100svh; display:flex; align-items:center; overflow:hidden; }

.hero__stage{ position:absolute; inset:0; z-index:0; }
.hero__stage video, .hero__stage .hero__poster{
  position:absolute; top:50%; left:auto; right: -7%;
  height: 100%; width:auto; max-width:none;
  transform: translateY(-50%);
  object-fit: contain;
}
.hero__stage video{ opacity:0; transition: opacity 1.2s var(--ease); }
.hero__stage video.is-ready{ opacity:1; }
.hero__stage video.is-ready + .hero__poster{ opacity:0; }
.hero__poster{ transition: opacity 1.2s var(--ease); }
/* scrims: dark left so headline is always readable; soft vignette */
.hero__scrim{ position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(20,18,16,0.97) 32%, rgba(20,18,16,0.74) 52%, rgba(20,18,16,0.30) 70%, rgba(20,18,16,0.0) 86%),
    linear-gradient(0deg, var(--bg) 1%, rgba(20,18,16,0) 26%),
    radial-gradient(110% 80% at 76% 48%, rgba(20,18,16,0) 38%, rgba(20,18,16,0.50) 100%);
}
.hero__grain{ position:absolute; inset:0; z-index:1; opacity:.5; pointer-events:none; mix-blend-mode:soft-light;
  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='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E"); }

.hero__content{ position:relative; z-index:2; width:100%; }
.hero__inner{ max-width: 720px; margin-left:0; margin-right:auto; }
.hero h1{ margin-top: 22px; font-size: clamp(2.4rem, 5.2vw, 4.6rem); letter-spacing:-0.035em; line-height:0.99; }
.hero h1 .soft{ color: var(--ink-2); }
.hero__sub{ margin-top: 26px; max-width: 540px; }
.hero__cta{ margin-top: 38px; display:flex; flex-wrap:wrap; gap:14px; }

/* live status chip bottom-left */
.hero__meta{
  position:absolute; left: var(--gutter); bottom: 30px; z-index:2;
  display:flex; align-items:center; gap:22px;
}
.statline{ display:flex; align-items:center; gap:9px; font-family:var(--font-mono); font-size:11px; letter-spacing:.13em; text-transform:uppercase; color:var(--ink-faint); }
.statline .dot{ width:6px;height:6px;border-radius:50%; background:var(--signal); box-shadow:0 0 8px var(--signal-glow); animation: pulse 2.6s var(--ease) infinite; }
@keyframes pulse{ 0%,100%{opacity:1} 50%{opacity:.35} }
@media (prefers-reduced-motion: reduce){ .statline .dot{ animation:none; } }

/* machine readout on the right (desktop only) */
.hero__readout{ position:absolute; right: var(--gutter); bottom: 30px; z-index:2; text-align:right; display:grid; gap:4px; }
.hero__readout span{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint); white-space:nowrap; }
.hero__readout b{ color:var(--ink-dim); font-weight:500; }

/* ---------- POINT OF VIEW ---------- */
.pov{ background: var(--bg); }
.pov__grid{ display:grid; grid-template-columns: 0.7fr 2fr; gap: clamp(24px,4vw,60px); align-items:start; }
.pov__statement{ font-family:var(--font-display); font-weight:500; letter-spacing:-0.02em;
  font-size: clamp(1.5rem, 2.9vw, 2.35rem); line-height:1.28; color:var(--ink); text-wrap:pretty; }
.pov__statement .mut{ color: var(--ink-faint); }
.pov__statement .key{ color: var(--ink); }
.pov__statement em{ font-style:normal; color:var(--signal); }

/* ---------- TOPIC PATHWAYS ---------- */
.paths__head{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; flex-wrap:wrap; margin-bottom: 8px; }
.paths__list{ margin-top: 18px; border-top:1px solid var(--line); }
.path{
  display:grid; grid-template-columns: 56px minmax(190px, 1fr) minmax(0, 1.5fr) 46px; gap: clamp(18px,3vw,46px);
  align-items:center; padding: clamp(26px,3.4vw,42px) 0;
  border-bottom:1px solid var(--line);
  position:relative; cursor:default;
  transition: background .5s var(--ease);
}
.path:hover{ background: linear-gradient(90deg, var(--signal-12), transparent 60%); }
.path__no{ font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); letter-spacing:.1em; }
.path:hover .path__no{ color: var(--signal); }
.path__title{ font-family:var(--font-display); font-size: clamp(1.3rem,2.3vw,1.85rem); font-weight:500; letter-spacing:-0.02em; line-height:1.08; }
.path__desc{ color:var(--ink-dim); font-size:15.5px; line-height:1.5; }
.path__go{ width:46px; height:46px; border:1px solid var(--line-2); border-radius:50%; display:grid; place-items:center; color:var(--ink-2); transition: all .4s var(--ease); flex:none; }
.path:hover .path__go{ border-color:var(--signal); color:var(--signal); transform: rotate(-45deg); }

/* distinct signal behavior per path: an animated diagram strip behind the title */
.path__viz{ position:absolute; inset:0; z-index:0; pointer-events:none; opacity:0; transition:opacity .5s var(--ease); overflow:hidden; }
.path:hover .path__viz{ opacity:1; }
.path > *:not(.path__viz){ position:relative; z-index:1; }

/* viz A — flowing signal line */
.viz-flow{ position:absolute; left:60px; right:90px; top:50%; height:1px; background:var(--line); }
.viz-flow::after{ content:""; position:absolute; top:-1px; left:0; width:60px; height:3px; border-radius:2px;
  background:linear-gradient(90deg, transparent, var(--signal), transparent); filter:blur(.3px);
  animation: flow 2.4s linear infinite; }
@keyframes flow{ from{ transform:translateX(-60px);} to{ transform:translateX(120%);} }

/* viz B — branching nodes */
.viz-branch{ position:absolute; right:120px; top:0; bottom:0; width:200px; }
.viz-branch i{ position:absolute; width:6px;height:6px;border-radius:50%; background:var(--signal-40); box-shadow:0 0 8px var(--signal-glow); animation: blink 1.8s var(--ease) infinite; }
.viz-branch i:nth-child(1){ left:10%; top:30%; animation-delay:0s; }
.viz-branch i:nth-child(2){ left:46%; top:64%; animation-delay:.3s; }
.viz-branch i:nth-child(3){ left:80%; top:24%; animation-delay:.6s; }
.viz-branch i:nth-child(4){ left:64%; top:46%; animation-delay:.9s; }
@keyframes blink{ 0%,100%{opacity:.25; transform:scale(.85);} 50%{opacity:1; transform:scale(1.15);} }

/* viz C — concentric sweep */
.viz-rings{ position:absolute; right:130px; top:50%; transform:translateY(-50%); width:120px; height:120px; }
.viz-rings span{ position:absolute; inset:0; border:1px solid var(--signal-20); border-radius:50%; }
.viz-rings span:nth-child(2){ inset:18px; }
.viz-rings span:nth-child(3){ inset:36px; }
.viz-rings::after{ content:""; position:absolute; inset:0; border-radius:50%;
  background:conic-gradient(from 0deg, transparent 0 70%, var(--signal-40) 85%, transparent 100%);
  -webkit-mask: radial-gradient(circle, transparent 56px, #000 57px); mask: radial-gradient(circle, transparent 56px, #000 57px);
  animation: spin 4s linear infinite; }
@keyframes spin{ to{ transform:rotate(360deg);} }

@media (prefers-reduced-motion: reduce){
  .viz-flow::after, .viz-branch i, .viz-rings::after{ animation:none; }
}

/* ---------- FEATURED THINKING ---------- */
.feat__head{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; flex-wrap:wrap; margin-bottom: 40px; }
.feat__grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: clamp(20px,2.5vw,34px); }
.card{ display:flex; flex-direction:column; }
.card__thumb{
  position:relative; aspect-ratio: 4/3; border:1px solid var(--line); border-radius:3px; overflow:hidden;
  background:
    repeating-linear-gradient(135deg, rgba(243,238,228,0.032) 0 9px, transparent 9px 18px),
    var(--panel);
}
.card__thumb .ph{ position:absolute; inset:0; display:grid; place-items:center;
  background:
    repeating-linear-gradient(135deg, rgba(243,238,228,0.035) 0 10px, transparent 10px 20px),
    var(--panel);
}
.card__thumb .ph span{ font-family:var(--font-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint); }
.card__fmt{ position:absolute; top:12px; left:12px; z-index:3;
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:.12em; text-transform:uppercase; white-space:nowrap;
  color:var(--ink); background:rgba(20,18,16,.7); border:1px solid var(--line-2); padding:5px 9px; border-radius:2px; backdrop-filter:blur(6px); }
.card__playbtn{ position:absolute; inset:0; display:grid; place-items:center; z-index:2; }
.card__playbtn .pc{ width:54px;height:54px;border-radius:50%; background:rgba(20,18,16,.55); border:1px solid var(--line-2); display:grid; place-items:center; backdrop-filter:blur(4px); transition: all .4s var(--ease); }
.card__playbtn .pc::after{ content:""; border-left:13px solid var(--ink); border-top:8px solid transparent; border-bottom:8px solid transparent; margin-left:3px; transition: border-color .4s var(--ease); }
.card:hover .card__playbtn .pc{ background:var(--signal); border-color:var(--signal); }
.card:hover .card__playbtn .pc::after{ border-left-color:#fff; }
.card__thumb img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease); }
.card__thumb image-slot{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.card:hover .card__thumb img{ transform:scale(1.04); }

.card__meta{ display:flex; gap:10px; align-items:center; margin-top:16px; font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint); flex-wrap:wrap; }
.card__meta span:not(.sep){ white-space:nowrap; }
.card__meta .sep{ width:3px;height:3px;border-radius:50%; background:var(--ink-faint); }
.card__title{ font-family:var(--font-display); font-weight:500; font-size:1.25rem; letter-spacing:-0.02em; line-height:1.16; margin-top:10px; transition:color .3s var(--ease); }
.card:hover .card__title{ color:var(--signal); }
.card__desc{ color:var(--ink-dim); font-size:14.5px; line-height:1.5; margin-top:10px; }
.card__link{ margin-top:14px; font-family:var(--font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-2); display:inline-flex; gap:8px; align-items:center; }
.card:hover .card__link{ color:var(--signal); }
.card__link .arrow{ transition:transform .35s var(--ease); }
.card:hover .card__link .arrow{ transform:translateX(3px); }

/* ---------- ABOUT ---------- */
.about{ background: var(--bg-2); border-block:1px solid var(--line); }
.about__grid{ display:grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(30px,5vw,80px); align-items:center; }
.about__portrait{ position:relative; }
.about__portrait image-slot{ width:100%; height:clamp(440px, 52vw, 560px); display:block; border:1px solid var(--line); }
.about__portrait .about__img{ width:100%; height:clamp(440px, 52vw, 560px); display:block; object-fit:cover; object-position:center; border:1px solid var(--line); }
.about__portrait .frame-tag{ position:absolute; bottom:14px; left:14px; z-index:3; white-space:nowrap;
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-dim);
  background:rgba(20,18,16,.66); border:1px solid var(--line-2); padding:5px 9px; border-radius:2px; backdrop-filter:blur(6px); }
.about__portrait .corner{ position:absolute; width:14px;height:14px; border:1px solid var(--signal-40); }
.about__portrait .corner.tl{ top:-1px;left:-1px;border-right:0;border-bottom:0; }
.about__portrait .corner.br{ bottom:-1px;right:-1px;border-left:0;border-top:0; }
.about__body p{ color:var(--ink-2); font-size: clamp(1rem,1.3vw,1.13rem); line-height:1.62; }
.about__body p + p{ margin-top: 18px; }
.creds{ display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.creds span{ font-family:var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-dim);
  border:1px solid var(--line); padding:7px 12px; border-radius:2px; white-space:nowrap; }

/* ---------- SUBSCRIBE ---------- */
.sub__grid{ display:grid; grid-template-columns: 1fr; gap: clamp(28px,5vw,70px); max-width:620px; }
.form{ display:flex; gap:10px; flex-wrap:wrap; margin-top:26px; max-width:460px; }
.form input{ flex:1 1 240px; min-width:0; background:var(--panel); border:1px solid var(--line-2); color:var(--ink);
  font-family:var(--font-body); font-size:15px; padding:14px 16px; border-radius:2px; transition:border-color .3s var(--ease); }
.form input::placeholder{ color:var(--ink-faint); }
.form input:focus{ outline:none; border-color:var(--signal); }
.form .note{ flex-basis:100%; font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; color:var(--ink-faint); margin-top:4px; }
.form .ok{ color:var(--signal); }

/* ---------- FOOTER ---------- */
.foot{ background: var(--bg); padding-block: clamp(48px,7vh,84px) 34px; }
.foot__top{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; align-items:flex-start; }
.foot__social{ display:flex; gap:8px; flex-wrap:wrap; }
.foot__social a{ display:inline-flex; align-items:center; gap:9px; font-family:var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-2); border:1px solid var(--line); padding:11px 16px; border-radius:2px; transition: all .35s var(--ease); }
.foot__social a:hover{ border-color:var(--signal); color:var(--signal); }
.foot__nav{ display:flex; gap:26px; flex-wrap:wrap; }
.foot__nav a{ font-size:14px; color:var(--ink-dim); }
.foot__nav a:hover{ color:var(--ink); }
.foot__bottom{ display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; align-items:center; margin-top:48px; padding-top:26px; border-top:1px solid var(--line); }
.foot__disc{ color:var(--ink-faint); font-size:13px; line-height:1.5; max-width:560px; }
.foot__copy{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint); white-space:nowrap; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px){
  .pov__grid{ grid-template-columns:1fr; gap:24px; }
  .about__grid{ grid-template-columns:1fr; gap:36px; }
  .about__portrait{ max-width:380px; }
  .sub__grid{ grid-template-columns:1fr; }
  .feat__grid{ grid-template-columns:1fr 1fr; }
  .path{ grid-template-columns:40px 1fr auto; }
  .path__desc{ grid-column: 2 / 3; }
}

@media (max-width: 720px){
  .nav__links{ display:none; }
  .nav__burger{ display:grid; }
  .nav.menu-open{ background:rgba(20,18,16,0.96); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); border-bottom-color:var(--line); }
  .nav.menu-open .nav__links{
    display:flex; position:absolute; top:70px; left:0; right:0;
    flex-direction:column; align-items:flex-start; gap:0;
    padding: 8px var(--gutter) 22px;
    background:rgba(20,18,16,0.98); border-bottom:1px solid var(--line);
  }
  .nav.menu-open .nav__links a{ width:100%; padding:15px 0; border-bottom:1px solid var(--line); font-size:17px; }
  .nav.menu-open .nav__links a.nav__cta{ border:1px solid var(--line-2); padding:13px; text-align:center; margin-top:14px; border-radius:2px; }
  .hero__readout{ display:none; }
  .feat__grid{ grid-template-columns:1fr; }
  .path{ grid-template-columns:32px 1fr; gap:14px 16px; padding:24px 0; }
  .path__go{ display:none; }
  .path__desc{ grid-column:2 / 3; margin-top:2px; }
  .path:hover{ background:none; }
  .path__viz{ display:none; }
  /* hero: machine becomes a calmer top-anchored backdrop, headline above the fold */
  .hero{ align-items:flex-end; padding-bottom: 8vh; }
  .hero__stage video, .hero__stage .hero__poster{ right:50%; transform:translate(50%,-50%); top:34%; height:auto; width:150%; opacity:.9; }
  .hero__stage video.is-ready{ opacity:.9; }
  .hero__scrim{ background:
      linear-gradient(180deg, rgba(20,18,16,0.35) 0%, rgba(20,18,16,0.2) 30%, rgba(20,18,16,0.82) 64%, var(--bg) 100%),
      radial-gradient(120% 60% at 50% 30%, transparent 40%, rgba(20,18,16,.5) 100%); }
  .hero__inner{ max-width:none; }
  .hero__meta{ display:none; }
  .hero__cta .btn{ flex:1 1 auto; justify-content:center; }
}

@media (max-width: 420px){
  body{ font-size:16px; }
  .hero__cta{ flex-direction:column; align-items:stretch; }
}