/* ════════════════════════════════════════════════════════════════════════
   Fourseat · landing.css
   Light, editorial, brown. Mirrors the hinoa.io structure & motion:
   cinematic video hero, pinned horizontal word band, "this is …" intro with
   bracketed phrases, a struck-through line, a sticky product showcase, a
   mission statement, and a closing CTA. The original footer is preserved.
   ════════════════════════════════════════════════════════════════════════ */

:root{
  --paper:#050505;
  --paper-2:#0a0a0c;
  --ink:#ffffff;
  --ink-soft:#a1a1aa;
  --muted:#71717a;
  --brown:#6366f1; /* Vibrant Indigo */
  --brown-2:#4f46e5;
  --brown-3:#818cf8;
  --card:rgba(20,20,25,0.5);
  --card-2:rgba(30,30,35,0.3);
  --card-ink:#f4f4f5;
  --card-muted:#a1a1aa;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.15);
  --hx-ease:cubic-bezier(.16,1,.3,1);
  --sans:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
  --serif:'Instrument Serif',Georgia,serif;
}

/* The marketing site is a single committed DARK experience. */
html{background:var(--paper)}
body .theme-toggle{display:none !important}

.lx{position:relative;z-index:1;color:var(--ink);overflow:clip}
.hx-wrap{width:min(1200px,calc(100vw - 48px));margin-inline:auto}

/* ── Shared reveal (blur + slide up) ─────────────────────────────────────── */
.hx-reveal{opacity:0;filter:blur(8px);transform:translateY(42px);transition:opacity 1.2s var(--hx-ease),transform 1.2s var(--hx-ease),filter 1.2s var(--hx-ease);transition-delay:var(--d,0s)}
.hx-reveal.in{opacity:1;filter:blur(0);transform:none}
@media (prefers-reduced-motion:reduce){.hx-reveal{opacity:1;transform:none;filter:none;transition:none}}

/* ── NAV (transparent over hero → dark glass once scrolled) ─────────────── *
 * Prefixed with body[data-theme='dark'] to out-specify styles.css.          */
body[data-theme='dark'] nav{
  background:transparent;border-color:transparent;box-shadow:none;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  transition:background .4s var(--hx-ease),border-color .4s,box-shadow .4s,backdrop-filter .4s,padding .4s;
}
body[data-theme='dark'] nav .brand-word{color:#fff;transition:color .4s}
body[data-theme='dark'] nav .nav-link{color:rgba(255,255,255,.85);transition:color .3s,background .3s}
body[data-theme='dark'] nav .nav-link:hover{color:#fff;background:rgba(255,255,255,.16)}
body[data-theme='dark'] nav .nav-cta{
  background:#fff;color:#1a120a;border:1px solid transparent;font-weight:600;
  box-shadow:0 6px 18px rgba(0,0,0,.2);
}
body[data-theme='dark'] nav .nav-cta:hover{background:var(--brown);color:#fff;transform:translateY(-1px);box-shadow:0 4px 20px rgba(99,102,241,0.4)}
body[data-theme='dark'] nav .nav-toggle{color:#fff;border-color:rgba(255,255,255,.4)}
body[data-theme='dark'] nav .brand-mark{filter:drop-shadow(0 0 10px rgba(99,102,241,0.5))}

body[data-theme='dark'] nav.hx-scrolled{
  background:rgba(10,10,12,.65);
  border-color:var(--line);
  box-shadow:0 8px 30px rgba(0,0,0,.4);
  backdrop-filter:blur(24px) saturate(150%);
  -webkit-backdrop-filter:blur(24px) saturate(150%);
}
body[data-theme='dark'] nav.hx-scrolled .brand-word{color:var(--ink)}
body[data-theme='dark'] nav.hx-scrolled .nav-link{color:var(--ink-soft)}
body[data-theme='dark'] nav.hx-scrolled .nav-link:hover{color:var(--ink);background:rgba(255,255,255,.07)}
body[data-theme='dark'] nav.hx-scrolled .nav-cta{background:var(--ink);color:#000;box-shadow:none}
body[data-theme='dark'] nav.hx-scrolled .nav-cta:hover{background:var(--brown);color:#fff;box-shadow:0 0 15px rgba(99,102,241,0.3)}
body[data-theme='dark'] nav.hx-scrolled .nav-toggle{color:var(--ink);border-color:var(--line-2)}

/* ── HERO (cinematic video) ──────────────────────────────────────────────── */
.hx-hero{
  position:relative;height:100svh;min-height:600px;
  display:flex;align-items:center;justify-content:center;
  text-align:center;overflow:hidden;background:#000;isolation:isolate;
}
.hx-hero-video{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;z-index:-2;
  transform:scale(1.04);
  filter:saturate(0.5) brightness(0.5);
}
.hx-hero-scrim{
  position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg, rgba(0,0,0,.3) 0%, rgba(5,5,5,.6) 60%, var(--paper) 100%);
}
.hx-hero-inner{padding:0 24px;transform:translateZ(0);position:relative;}
.hx-hero-inner::before{
  content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:400px;height:400px;
  background:radial-gradient(circle, rgba(99,102,241,.25) 0%, transparent 60%);
  filter:blur(60px);z-index:-1;
  animation:hxHeroGlow 6s ease-in-out infinite alternate;
}
@keyframes hxHeroGlow{
  0%{transform:translate(-50%,-50%) scale(0.9);opacity:0.6}
  100%{transform:translate(-50%,-50%) scale(1.1);opacity:1}
}
.hx-hero-eyebrow{
  font-family:var(--sans);font-weight:600;
  font-size:clamp(.72rem,1.4vw,.9rem);letter-spacing:.42em;text-transform:uppercase;
  color:var(--brown-3);margin-bottom:.6rem;
  opacity:0;filter:blur(5px);transform:translateY(20px);animation:hxRise 1.2s var(--hx-ease) .2s forwards;
}
.hx-hero-word{
  font-family:var(--sans);font-weight:800;
  font-size:clamp(3.6rem,13vw,11rem);line-height:.92;letter-spacing:-.03em;
  color:#fff;text-transform:lowercase;
  text-shadow:0 8px 50px rgba(0,0,0,.6), 0 0 30px rgba(99,102,241,.3);
  opacity:0;filter:blur(10px);transform:translateY(30px);animation:hxRise 1.4s var(--hx-ease) .3s forwards;
}
.hx-hero-tag{
  font-family:var(--sans);font-weight:500;
  font-size:clamp(.72rem,1.5vw,.95rem);letter-spacing:.34em;text-transform:uppercase;
  color:rgba(255,255,255,.6);margin-top:.9rem;
  opacity:0;filter:blur(5px);transform:translateY(20px);animation:hxRise 1.2s var(--hx-ease) .5s forwards;
}
@keyframes hxRise{to{opacity:1;transform:none;filter:blur(0)}}
.hx-scroll-cue{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  font-family:var(--sans);font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;
  color:rgba(255,255,255,.7);display:flex;flex-direction:column;align-items:center;gap:.5rem;
  z-index:1;
}
.hx-scroll-cue span{display:block;width:1px;height:42px;background:linear-gradient(rgba(255,255,255,.7),transparent);animation:hxCue 2s ease-in-out infinite}
@keyframes hxCue{0%,100%{transform:scaleY(.5);transform-origin:top;opacity:.5}50%{transform:scaleY(1);opacity:1}}

/* ── AUTO-SLIDING WORD BAND (continuous marquee, like hinoa.io) ──────────── */
.hx-marquee{
  position:relative;
  padding:clamp(3.5rem,8vh,6rem) 0;
  background:var(--paper);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.hx-marquee-viewport{
  overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
}
.hx-marquee-track{
  display:flex;align-items:center;gap:clamp(1.5rem,4vw,4rem);
  width:max-content;
  white-space:nowrap;
  animation:hxMarquee 38s linear infinite;
  will-change:transform;
}
.hx-marquee:hover .hx-marquee-track{animation-play-state:paused}
@keyframes hxMarquee{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .hx-marquee-track{animation:none;transform:none}
}

.hx-pin-word{
  font-family:var(--sans);font-weight:800;
  font-size:clamp(1.75rem,5.5vw,4.75rem);line-height:1;letter-spacing:-.03em;color:var(--ink);
  flex-shrink:0;
}
.hx-pin-word.brownword{
  background:linear-gradient(90deg,var(--brown-3),var(--brown));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hx-pin-pill{
  display:inline-flex;align-items:center;flex-shrink:0;
  font-family:var(--sans);font-weight:700;
  font-size:clamp(1.2rem,3.5vw,3rem);line-height:1;
  color:#fff;background:rgba(255,255,255,.05);
  border:1px solid var(--line-2);border-radius:999px;padding:.2em .6em;text-transform:lowercase;letter-spacing:.02em;
  box-shadow:0 0 20px rgba(99,102,241,.15);
}

/* ── INTRO ("this is fourseat") ──────────────────────────────────────────── */
.hx-intro{padding:clamp(6rem,14vh,11rem) 0;text-align:center;background:var(--paper)}
.hx-kicker{
  font-family:var(--sans);font-size:clamp(1rem,2vw,1.35rem);color:var(--ink-soft);
  display:inline-flex;align-items:baseline;gap:.4ch;margin-bottom:1.4rem;font-weight:400;
}
.hx-brand{font-family:var(--serif);color:var(--brown);font-size:1.25em;line-height:1}
.hx-display{
  font-family:var(--sans);font-weight:800;letter-spacing:-.025em;line-height:1.02;
  font-size:clamp(2.6rem,7vw,6rem);color:var(--ink);
}
.hx-display em{font-family:var(--serif);font-weight:400;font-style:italic;color:var(--brown);letter-spacing:0}
.hx-intro-lead{
  max-width:46rem;margin:2rem auto 0;
  font-family:var(--sans);font-weight:400;
  font-size:clamp(1.15rem,2.3vw,1.7rem);line-height:1.5;color:var(--ink-soft);
}
.hx-bracket{
  font-weight:700;color:var(--ink);white-space:nowrap;
}
.hx-bracket::before{content:"[";color:var(--brown);margin-right:.1ch}
.hx-bracket::after{content:"]";color:var(--brown);margin-left:.1ch}

.hx-btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--sans);font-size:1rem;font-weight:600;
  padding:.95rem 1.7rem;border-radius:999px;cursor:pointer;
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  transition:transform .4s var(--hx-ease),background .3s,color .3s,box-shadow .3s;
  margin-top:2.4rem;
}
.hx-btn:hover{background:var(--brown);border-color:var(--brown);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(156,92,42,.3)}
.hx-btn svg{width:16px;height:16px;transition:transform .4s var(--hx-ease)}
.hx-btn:hover svg{transform:translateX(4px)}
.hx-btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.hx-btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ── STRUCK LINE ─────────────────────────────────────────────────────────── */
.hx-strike{padding:clamp(3rem,7vh,6rem) 0;background:var(--paper)}
.hx-strike .hx-wrap{border-top:1px solid var(--line);padding-top:clamp(2.5rem,5vh,4rem)}
.hx-strike-line{
  font-family:var(--sans);font-weight:600;letter-spacing:-.02em;
  font-size:clamp(1.6rem,4.4vw,3.4rem);color:var(--ink);line-height:1.1;
}
.hx-strike-line s{color:var(--muted);text-decoration-thickness:.06em;text-decoration-color:var(--brown)}

/* ── STORY (sticky text + scrolling product cards) ───────────────────────── */
.hx-story{background:var(--paper);padding:clamp(2rem,5vh,4rem) 0 clamp(5rem,10vh,9rem)}
.hx-story-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);gap:clamp(2rem,5vw,5rem);align-items:start}
.hx-story-text{position:sticky;top:18vh;align-self:start}
.hx-story-text .hx-display{font-size:clamp(2.2rem,4.6vw,4rem)}
.hx-story-sub{margin-top:1.6rem;max-width:30rem;font-size:1.1rem;line-height:1.6;color:var(--ink-soft)}
.hx-story-cards{display:flex;flex-direction:column;gap:clamp(1.5rem,4vh,3rem)}

.hx-card{
  position:relative;border-radius:26px;overflow:hidden;
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 30px 70px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transition:transform .4s var(--hx-ease),border-color .4s,box-shadow .4s;
}
.hx-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,255,255,.15);
  box-shadow:0 40px 80px rgba(0,0,0,.6),0 0 40px rgba(99,102,241,.15);
}
.hx-card-media{padding:2rem 2rem 0;min-height:300px;display:flex;align-items:center;justify-content:center;position:relative;}
.hx-card-media::before{
  content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:150px;height:150px;background:radial-gradient(circle, rgba(99,102,241,.2) 0%, transparent 70%);
  filter:blur(30px);pointer-events:none;
}
.hx-card-cap{padding:1.6rem 2rem 1.9rem;position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.04);background:rgba(0,0,0,.2)}
.hx-card-title{font-family:var(--sans);font-weight:700;font-size:1.35rem;color:var(--card-ink);letter-spacing:-.01em}
.hx-card-text{margin-top:.5rem;font-size:.96rem;line-height:1.55;color:var(--card-muted)}

/* mini mock primitives inside cards */
.mk{width:100%;font-family:var(--sans)}
.mk-pill{display:flex;align-items:center;gap:.7rem;padding:.7rem .9rem;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);margin-bottom:.6rem}
.mk-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--brown-3);box-shadow:0 0 0 3px rgba(207,145,82,.18)}
.mk-pill .nm{color:var(--card-ink);font-size:.92rem;font-weight:500}
.mk-pill .st{margin-left:auto;color:#7fb89a;font-size:.74rem;letter-spacing:.04em}
.mk-chart{width:100%;height:150px}
.mk-line{stroke:var(--brown-3);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mk-badge{display:inline-flex;align-items:center;gap:.4rem;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:#e6b07a;background:rgba(207,145,82,.14);border:1px solid rgba(207,145,82,.3);padding:.3rem .6rem;border-radius:8px}
.mk-row{display:flex;gap:.6rem;align-items:flex-start;margin-bottom:.7rem}
.mk-av{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#1a120a;flex-shrink:0}
.mk-bub{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.07);border-radius:12px;padding:.55rem .8rem}
.mk-role{font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--card-muted);margin-bottom:.15rem}
.mk-said{font-size:.82rem;color:var(--card-ink);line-height:1.4}
.mk-verdict{margin-top:.4rem;padding:.8rem .95rem;border-radius:12px;background:rgba(207,145,82,.12);border:1px solid rgba(207,145,82,.25)}
.mk-verdict .vl{font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:#e6b07a;margin-bottom:.25rem}
.mk-verdict .vt{font-family:var(--serif);font-size:1.05rem;color:var(--card-ink);line-height:1.35}
.mk-deck{width:78%;margin:0 auto;aspect-ratio:4/3;border-radius:14px;background:linear-gradient(160deg,#efe7d8,#d9cab0);box-shadow:0 18px 40px rgba(0,0,0,.4);padding:1.1rem;position:relative}
.mk-deck b{display:block;height:9px;border-radius:5px;background:rgba(28,23,18,.78);width:62%;margin-bottom:.5rem}
.mk-deck i{display:block;height:6px;border-radius:4px;background:rgba(28,23,18,.3);width:42%;margin-bottom:1.1rem}
.mk-deck .sp{height:46px;border-radius:8px;background:linear-gradient(180deg,rgba(156,92,42,.22),rgba(156,92,42,.02))}
.mk-deck .tag{position:absolute;bottom:.9rem;right:.9rem;font-size:.6rem;font-weight:600;color:var(--brown);letter-spacing:.04em}

/* ── MISSION ─────────────────────────────────────────────────────────────── */
.hx-mission{padding:clamp(6rem,14vh,12rem) 0;text-align:center;background:var(--paper)}
.hx-mission .hx-display{font-size:clamp(2.4rem,6vw,5.2rem);max-width:18ch;margin-inline:auto;text-shadow:0 0 40px rgba(255,255,255,.1)}
.hx-mission-words{
  margin-top:2.2rem;font-family:var(--sans);font-style:normal;font-weight:500;
  font-size:clamp(1.3rem,3vw,2.2rem);color:var(--ink-soft);letter-spacing:.05em;text-transform:uppercase;
}
.hx-mission-words span{color:var(--ink);text-shadow:0 0 20px rgba(255,255,255,.4)}

/* ── FINAL CTA ───────────────────────────────────────────────────────────── */
.hx-final{
  position:relative;background:linear-gradient(180deg,var(--paper),var(--paper-2));
  padding:clamp(6rem,14vh,11rem) 0;text-align:center;
  border-top:1px solid var(--line);overflow:hidden;
}
.hx-final::before{
  content:'';position:absolute;bottom:0;left:50%;transform:translate(-50%,50%);
  width:600px;height:600px;background:radial-gradient(circle, rgba(99,102,241,.15) 0%, transparent 60%);
  filter:blur(60px);pointer-events:none;
}
.hx-final .hx-display{font-size:clamp(2.4rem,6vw,5rem);position:relative;z-index:2}
.hx-final-cta{display:flex;flex-wrap:wrap;gap:.9rem;justify-content:center;margin-top:2.4rem;position:relative;z-index:2}
.hx-final-cta .hx-btn{margin-top:0}

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width:900px){
  .hx-story-grid{grid-template-columns:1fr;gap:2.5rem}
  .hx-story-text{position:static}
}
@media (max-width:560px){
  .hx-card-media{min-height:230px;padding:1.4rem 1.4rem 0}
  .hx-card-cap{padding:1.2rem 1.4rem 1.5rem}
}