:root{
  --bg:#05070c;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.055);
  --stroke:rgba(255,255,255,.09);
  --stroke-2:rgba(255,255,255,.16);
  --text:#eef1f8;
  --muted:#8a93a8;
  --dim:#5d6579;
  --cyan:#3ee3f2;
  --indigo:#6d7cff;
  --violet:#b271ff;
  --accent:linear-gradient(100deg,var(--cyan),var(--indigo) 48%,var(--violet));
  --sans:"Inter","Segoe UI Variable Text","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --r-lg:24px;
  --r-md:16px;
  --ease:cubic-bezier(.22,.68,.35,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  font-size:16px;line-height:1.65;font-weight:400;letter-spacing:.005em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.022em;line-height:1.16}
p{margin:0}
a{color:inherit;text-decoration:none}
svg{display:block}
::selection{background:rgba(109,124,255,.4)}

/* ---------- background ---------- */
.bg{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-aurora{
  position:absolute;inset:-25%;
  background:
    radial-gradient(38% 42% at 18% 12%,rgba(62,227,242,.20),transparent 62%),
    radial-gradient(42% 46% at 84% 22%,rgba(178,113,255,.18),transparent 64%),
    radial-gradient(52% 50% at 58% 92%,rgba(109,124,255,.16),transparent 66%);
  filter:blur(30px);
  animation:drift 34s var(--ease) infinite alternate;
}
@keyframes drift{
  0%{transform:translate3d(-2%,-1%,0) scale(1)}
  100%{transform:translate3d(3%,2%,0) scale(1.09)}
}
.bg-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(72% 58% at 50% 22%,#000 0%,transparent 78%);
  mask-image:radial-gradient(72% 58% at 50% 22%,#000 0%,transparent 78%);
  opacity:.5;
}
.bg-vignette{
  position:absolute;inset:0;
  background:radial-gradient(120% 80% at 50% 0%,transparent 45%,rgba(3,4,8,.72) 100%);
}

/* ---------- shell ---------- */
main,.nav,.foot{position:relative;z-index:1}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  max-width:1180px;margin:0 auto;padding:26px 28px;
}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;letter-spacing:-.01em}
.brand-mark{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;
  background:linear-gradient(160deg,rgba(62,227,242,.16),rgba(178,113,255,.14));
  border:1px solid var(--stroke);box-shadow:0 0 22px rgba(109,124,255,.16)}
.brand-mark svg{width:22px;height:22px}
.brand-mark.small{width:26px;height:26px;border-radius:8px}
.brand-mark.small svg{width:19px;height:19px}
.brand-text{font-size:17px}
.nav-links{display:flex;gap:30px;font-size:14.5px;color:var(--muted)}
.nav-links a{transition:color .25s var(--ease)}
.nav-links a:hover{color:var(--text)}

.section{max-width:1180px;margin:0 auto;padding:96px 28px}
.section-head{max-width:660px;margin-bottom:52px}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:transparent;background:var(--accent);
  -webkit-background-clip:text;background-clip:text;margin-bottom:18px;opacity:.9;
}
.section-head h2{font-size:clamp(28px,3.5vw,42px);margin-bottom:16px}
.section-head p{color:var(--muted);font-size:16.5px;max-width:56ch}

/* ---------- hero ---------- */
.hero{
  max-width:1180px;margin:0 auto;padding:60px 28px 40px;
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:48px;align-items:center;min-height:min(78vh,720px);
}
.pill{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;color:#c9d1e4;
  padding:7px 15px 7px 12px;border-radius:999px;border:1px solid var(--stroke);
  background:var(--panel);margin-bottom:26px;backdrop-filter:blur(10px);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(62,227,242,.14);animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(38px,5.6vw,68px);font-weight:600;margin-bottom:24px}
.hero h1 em{
  font-style:normal;color:transparent;background:var(--accent);
  -webkit-background-clip:text;background-clip:text;
  background-size:200% 100%;animation:sheen 9s linear infinite;
}
@keyframes sheen{0%{background-position:0% 0}100%{background-position:200% 0}}
.lede{color:var(--muted);font-size:17.5px;max-width:52ch;margin-bottom:36px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:46px}
.btn{
  display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 24px;
  border-radius:999px;font-size:15px;font-weight:500;transition:.3s var(--ease);
  border:1px solid transparent;cursor:pointer;font-family:inherit;
}
.btn svg{width:18px;height:18px}
.btn.primary{
  color:#070a12;background:linear-gradient(100deg,var(--cyan),var(--indigo) 55%,var(--violet));
  box-shadow:0 10px 34px -10px rgba(109,124,255,.65);
}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 16px 42px -10px rgba(109,124,255,.8)}
.btn.ghost{color:var(--text);border-color:var(--stroke-2);background:var(--panel);backdrop-filter:blur(10px)}
.btn.ghost:hover{border-color:rgba(255,255,255,.32);background:var(--panel-2);transform:translateY(-2px)}
.hero-facts{display:flex;gap:34px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.hero-facts li{display:flex;flex-direction:column;gap:3px}
.hero-facts b{font-size:15px;font-weight:600}
.hero-facts span{font-size:13px;color:var(--dim)}
.hero-art{position:relative;height:440px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--stroke);background:
    radial-gradient(90% 80% at 70% 20%,rgba(109,124,255,.13),transparent 60%),
    linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  backdrop-filter:blur(14px);box-shadow:0 40px 90px -50px rgba(0,0,0,.9)}
.hero-art canvas{width:100%;height:100%;display:block}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  position:relative;padding:30px 28px 32px;border-radius:var(--r-md);
  border:1px solid var(--stroke);background:linear-gradient(180deg,var(--panel-2),rgba(255,255,255,.015));
  backdrop-filter:blur(14px);overflow:hidden;transition:.4s var(--ease);
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .4s var(--ease);
  background:radial-gradient(300px 200px at var(--mx,50%) var(--my,0%),rgba(109,124,255,.16),transparent 70%);
}
.card:hover{transform:translateY(-4px);border-color:var(--stroke-2)}
.card:hover::before{opacity:1}
.card-ico{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;margin-bottom:22px;
  border:1px solid var(--stroke);background:rgba(62,227,242,.08);color:var(--cyan);
  position:relative;z-index:1;
}
.card-ico svg{width:22px;height:22px}
.card h3{font-size:17.5px;margin-bottom:10px;position:relative;z-index:1}
.card p{font-size:14.6px;color:var(--muted);position:relative;z-index:1}
.disclaimer{color:var(--dim);font-size:13px;margin-top:26px}

/* ---------- sampler ---------- */
.sample-tabs{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.tab{
  position:relative;display:flex;align-items:center;gap:12px;padding:12px 18px 12px 14px;
  border-radius:14px;border:1px solid var(--stroke);background:var(--panel);
  cursor:pointer;transition:.32s var(--ease);font-family:inherit;color:var(--muted);
  backdrop-filter:blur(10px);overflow:hidden;
}
.tab:hover{border-color:var(--stroke-2);color:var(--text);transform:translateY(-2px)}
.tab[aria-selected="true"]{
  color:var(--text);border-color:rgba(109,124,255,.55);
  background:linear-gradient(180deg,rgba(109,124,255,.18),rgba(178,113,255,.08));
  box-shadow:0 10px 32px -16px rgba(109,124,255,.85);
}
.tab-idx{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--dim)}
.tab[aria-selected="true"] .tab-idx{color:rgba(255,255,255,.72)}
.tab-spark{display:flex;align-items:center;gap:1.5px;height:20px}
.tab-spark i{width:2px;border-radius:2px;background:currentColor;opacity:.42}
.tab[aria-selected="true"] .tab-spark i{opacity:.9;background:linear-gradient(180deg,var(--cyan),var(--violet))}

.player{
  position:relative;border-radius:var(--r-lg);border:1px solid var(--stroke);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.014));
  backdrop-filter:blur(18px);padding:26px 26px 20px;
  box-shadow:0 50px 110px -60px rgba(0,0,0,1);
}
.player::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(120% 60% at 50% -10%,rgba(109,124,255,.16),transparent 62%);
}
.player-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.seg{
  position:relative;display:inline-flex;gap:2px;padding:4px;border-radius:999px;
  border:1px solid var(--stroke);background:rgba(0,0,0,.28);
}
.seg button{
  position:relative;z-index:1;border:0;background:none;font-family:inherit;font-size:14px;
  color:var(--muted);padding:9px 20px;border-radius:999px;cursor:pointer;
  transition:color .3s var(--ease);white-space:nowrap;
}
.seg button[aria-selected="true"]{color:#080b14;font-weight:600}
.seg-ind{
  position:absolute;top:4px;left:4px;height:calc(100% - 8px);border-radius:999px;
  background:linear-gradient(100deg,var(--cyan),var(--indigo) 60%,var(--violet));
  box-shadow:0 6px 22px -8px rgba(109,124,255,.9);
  transition:transform .38s var(--ease),width .38s var(--ease);
}
.loop{
  display:inline-flex;align-items:center;gap:8px;font-family:inherit;font-size:13.5px;
  color:var(--muted);padding:9px 16px;border-radius:999px;cursor:pointer;
  border:1px solid var(--stroke);background:rgba(0,0,0,.24);transition:.3s var(--ease);
}
.loop svg{width:16px;height:16px}
.loop[aria-pressed="true"]{color:var(--text);border-color:rgba(62,227,242,.45);background:rgba(62,227,242,.1)}
.loop:hover{border-color:var(--stroke-2)}

.viz{position:relative;height:230px;margin:18px 0 6px;display:grid;place-items:center}
.viz canvas{position:absolute;inset:0;width:100%;height:100%}
.play-wrap{position:relative;display:grid;place-items:center;width:104px;height:104px}
.play-ring{
  position:absolute;inset:0;border-radius:50%;
  background:conic-gradient(from -90deg,var(--cyan) 0deg,var(--indigo) calc(var(--p,0)*3.6deg),rgba(255,255,255,.09) calc(var(--p,0)*3.6deg));
  -webkit-mask:radial-gradient(circle,transparent 0 45px,#000 46px);
  mask:radial-gradient(circle,transparent 0 45px,#000 46px);
  transition:opacity .3s var(--ease);
}
.play{
  position:relative;width:78px;height:78px;border-radius:50%;cursor:pointer;border:0;
  display:grid;place-items:center;color:#070a12;
  background:linear-gradient(150deg,var(--cyan),var(--indigo) 58%,var(--violet));
  box-shadow:0 18px 44px -14px rgba(109,124,255,.85);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.play:hover{transform:scale(1.055);box-shadow:0 22px 54px -14px rgba(109,124,255,1)}
.play:active{transform:scale(.98)}
.play svg{grid-area:1/1;width:32px;height:32px;transition:.26s var(--ease)}
.play .ico-pause{opacity:0;transform:scale(.7)}
.play.is-playing .ico-play{opacity:0;transform:scale(.7)}
.play.is-playing .ico-pause{opacity:1;transform:scale(1)}

.scrub{position:relative;height:62px;cursor:pointer;margin-top:4px;touch-action:none}
.scrub-bars{position:absolute;inset:0;display:flex;align-items:center;gap:2px}
.scrub-bars i{flex:1 1 0;min-width:1px;border-radius:2px;background:rgba(255,255,255,.13);transition:background .2s}
.scrub-fill{clip-path:inset(0 calc(100% - var(--p,0%)) 0 0)}
.scrub-fill i{background:linear-gradient(180deg,var(--cyan),var(--indigo) 62%,var(--violet));
  box-shadow:0 0 10px rgba(109,124,255,.5)}
.scrub-head{
  position:absolute;top:-2px;bottom:-2px;width:2px;border-radius:2px;background:#fff;
  opacity:0;transition:opacity .2s;box-shadow:0 0 14px rgba(255,255,255,.75);pointer-events:none;
}
.scrub:hover .scrub-head,.scrub.is-drag .scrub-head{opacity:.92}
.player-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:13.5px}
.now{color:var(--muted)}
.now b{color:var(--text);font-weight:500}
.time{color:var(--dim);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.time b{color:var(--text);font-weight:500}
.footnote{color:var(--dim);font-size:13.2px;margin-top:20px;max-width:70ch;line-height:1.75}

/* ---------- footer ---------- */
.foot{
  max-width:1180px;margin:0 auto;padding:52px 28px 70px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  border-top:1px solid var(--stroke);margin-top:40px;
}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px}
.foot p{font-size:13px;color:var(--dim)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero{grid-template-columns:1fr;gap:36px;min-height:0;padding-top:30px}
  .hero-art{height:320px;order:-1}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:72px 28px}
}
@media (max-width:640px){
  .cards{grid-template-columns:1fr}
  .nav{padding:20px 20px}
  .nav-links{gap:20px}
  .section,.hero,.foot{padding-left:20px;padding-right:20px}
  .player{padding:20px 16px 16px}
  .seg button{padding:9px 14px;font-size:13px}
  .hero-facts{gap:22px}
  .viz{height:190px}
  .scrub-bars{gap:1.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}