/* LEMNIA — charcoal + electric yellow, aligned to concept 01 */

@font-face{
  font-family:'Inter VF';
  src:url('assets/Inter-VF.ttf') format('truetype-variations');
  font-weight:100 900;
  font-display:swap;
}

:root{
  --bg:#0E0F10;
  --ink:#EDEEE6;
  --ink-dim:rgba(237,238,230,.62);
  --ink-faint:rgba(237,238,230,.38);
  --yellow:#E8FF1F;
  --line:rgba(237,238,230,.14);
  --font-sans:'Inter VF','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

::selection{background:var(--yellow);color:#0E0F10}

.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.icon{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.6;flex:none}

.skip{
  position:fixed;left:16px;top:-48px;z-index:100;
  background:var(--yellow);color:#0E0F10;padding:10px 18px;border-radius:2px;
  text-decoration:none;font-size:14px;transition:top .15s;
}
.skip:focus{top:12px}

/* ---------------------------------------------------------- header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  height:76px;padding:0 44px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(to bottom,rgba(14,15,16,.92),rgba(14,15,16,.72) 70%,transparent);
}
.wordmark{
  font-weight:800;font-size:22px;letter-spacing:.06em;color:var(--ink);
  text-decoration:none;
}
.site-nav{display:flex;gap:54px;justify-content:center}
.site-nav a{
  color:var(--ink-dim);text-decoration:none;font-size:15px;letter-spacing:.04em;
  transition:color .2s;
}
.site-nav a:hover,.site-nav a:focus-visible{color:var(--ink)}
.ghost-btn{
  color:var(--ink);text-decoration:none;font-size:14px;letter-spacing:.08em;
  border:1px solid rgba(237,238,230,.42);border-radius:999px;
  padding:10px 24px;transition:border-color .2s,background .2s,color .2s;
}
.ghost-btn:hover,.ghost-btn:focus-visible{border-color:var(--yellow);color:var(--yellow)}

/* ------------------------------------------------------------- hero */
.hero{
  position:relative;
  min-height:100vh;
  display:grid;
  grid-template-columns:minmax(380px,.82fr) 1.18fr;
  align-items:center;
  padding:110px 44px 78px;
  gap:24px;
}

.hero-copy{padding-left:34px;max-width:560px;z-index:2}
.eyebrow{
  display:flex;align-items:center;gap:12px;
  color:var(--yellow);font-size:15px;font-weight:600;letter-spacing:.12em;
  margin-bottom:26px;
}
.eyebrow .tick{width:34px;height:3px;background:var(--yellow);display:inline-block}
.eyebrow-en{color:var(--ink-dim);font-weight:500;letter-spacing:.14em}

h1{
  font-weight:700;
  font-size:clamp(46px,4.6vw,76px);
  line-height:1.08;letter-spacing:-.015em;
  color:var(--ink);margin-bottom:30px;
}

.subtitle{
  color:var(--ink-dim);font-size:16.5px;line-height:1.95;
  font-weight:400;max-width:440px;margin-bottom:42px;
}

.cta-row{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.primary{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--yellow);color:#0E0F10;
  border:none;border-radius:999px;
  font-family:inherit;font-size:16px;font-weight:600;letter-spacing:.04em;
  padding:16px 34px;cursor:pointer;
  transition:transform .18s,box-shadow .18s;
}
.primary::after{
  content:'';width:18px;height:18px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12h13M13 6l6 6-6 6' fill='none' stroke='%230E0F10' stroke-width='2'/%3E%3C/svg%3E") center/contain no-repeat;
}
.primary:hover{transform:translateY(-1px);box-shadow:0 6px 26px rgba(232,255,31,.22)}
.primary:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--ink-dim);font-size:15px;text-decoration:none;letter-spacing:.03em;
  border-bottom:1px solid transparent;transition:color .2s,border-color .2s;
}
.text-link .icon{width:16px;height:16px}
.text-link:hover,.text-link:focus-visible{color:var(--ink);border-bottom-color:var(--ink-faint)}

/* ------------------------------------------------------------ stage */
.stage{
  position:relative;
  justify-self:center;align-self:center;
  width:min(58vw,1080px);
  aspect-ratio:1.12 / 1;
  display:flex;align-items:center;justify-content:center;
  touch-action:none;
}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;cursor:grab;outline:none}
.stage canvas:focus-visible{outline:1px solid var(--line);outline-offset:4px}
.stage.dragging canvas{cursor:grabbing}
.stage.ready #poster{opacity:0}
#poster{
  position:absolute;inset:0;margin:auto;
  width:min(100%,980px);height:auto;
  object-fit:contain;
  transition:opacity .5s ease;
  user-select:none;pointer-events:none;
}
/* A restrained ambient lift; the core supplies the visible glow. */
.stage::before{
  content:'';position:absolute;inset:18% 12%;
  background:radial-gradient(ellipse 44% 40% at 52% 48%,rgba(120,140,40,.035),rgba(14,15,16,0) 65%);
  pointer-events:none;
}
.hint{
  position:absolute;left:52%;bottom:7%;
  display:flex;align-items:center;gap:14px;
  color:var(--ink-faint);font-size:13.5px;letter-spacing:.14em;
  pointer-events:none;white-space:nowrap;
}
.hint-rule{width:56px;height:34px;border-left:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}
.hint-rule::after{content:'';position:absolute;left:-3px;bottom:-3px;width:5px;height:5px;border-radius:50%;background:var(--ink-faint)}

/* right edge vertical rule with yellow tick */
.hero::after{
  content:'';position:absolute;right:44px;top:22%;bottom:16%;width:1px;
  background:linear-gradient(to bottom,transparent,rgba(237,238,230,.22) 12%,rgba(237,238,230,.22) 88%,transparent);
  pointer-events:none;
}
.hero::before{
  content:'';position:absolute;right:40px;top:46%;width:3px;height:46px;background:var(--yellow);
  pointer-events:none;z-index:1;
}

/* ----------------------------------------------------- hero footer */
.hero-footer{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;justify-content:space-between;align-items:center;
  padding:0 44px 26px;
}
.colophon{color:var(--ink-faint);font-size:13px;letter-spacing:.1em}
.footer-right{display:flex;align-items:center;gap:22px}
.pause-btn{
  display:inline-flex;align-items:center;gap:9px;
  background:transparent;color:var(--ink-dim);
  border:1px solid var(--line);border-radius:999px;
  font-family:inherit;font-size:13px;letter-spacing:.08em;
  padding:8px 18px;cursor:pointer;transition:color .2s,border-color .2s;
}
.pause-btn:hover,.pause-btn:focus-visible{color:var(--ink);border-color:var(--ink-faint);outline:none}
.pause-btn[aria-pressed="true"]{color:var(--yellow);border-color:rgba(232,255,31,.5)}
.pause-glyph{width:9px;height:11px;border-left:2px solid currentColor;border-right:2px solid currentColor;display:inline-block}
.pause-btn[aria-pressed="true"] .pause-glyph{border:none;width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:9px solid currentColor}
.scroll-cue{color:var(--ink-faint);display:inline-flex;transition:color .2s}
.scroll-cue .icon{width:24px;height:24px}
.scroll-cue:hover{color:var(--ink)}

/* ------------------------------------------------------------ specs */
.specs{
  max-width:1080px;margin:0 auto;padding:130px 44px 120px;
}
.specs .eyebrow{margin-bottom:22px}
.specs h2{
  font-weight:600;font-size:clamp(30px,3vw,44px);letter-spacing:-.01em;
  margin-bottom:64px;color:var(--ink);
}
.spec-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  border-top:1px solid var(--line);
}
.spec-grid div{
  display:flex;justify-content:space-between;gap:28px;align-items:baseline;
  padding:26px 8px;border-bottom:1px solid var(--line);
}
.spec-grid dt{color:var(--ink-faint);font-size:14px;letter-spacing:.12em;flex:none}
.spec-grid dd{color:var(--ink);font-size:16px;text-align:right;letter-spacing:.02em}
.spec-note{margin-top:34px;color:var(--ink-faint);font-size:13px;letter-spacing:.04em}

.site-footer{
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:34px 44px;border-top:1px solid var(--line);
  color:var(--ink-faint);font-size:13px;letter-spacing:.08em;
}
.site-footer a{color:var(--ink-dim);text-decoration:none}
.site-footer a:hover{color:var(--ink)}

/* -------------------------------------------------------- responsive */
@media (max-width:1020px){
  .site-nav{display:none}
  .site-header{grid-template-columns:1fr auto;padding:0 22px;height:64px}
  .hero{
    grid-template-columns:1fr;
    padding:92px 22px 60px;gap:0;
    min-height:auto;
  }
  .hero-copy{padding-left:0;max-width:none}
  .subtitle br{display:none}
  .stage{width:100%;height:46vh;aspect-ratio:auto;order:2;margin-top:8px}
  .hero::before,.hero::after{display:none}
  .hint{left:auto;right:6%;bottom:2%}
  .hero-footer{position:static;padding:18px 0 0}
  .specs{padding:80px 22px}
  .spec-grid{grid-template-columns:1fr}
  .site-footer{padding:28px 22px}
}