/* Seston — deep navy, glass panels and a real waveform. The palette follows the logo:
   the shell and its trace are blue, so the site is blue. */
:root{
  --bg:#06101c;
  --bg-2:#0a1626;
  --panel:linear-gradient(160deg,rgba(13,28,47,.86),rgba(9,20,34,.86));
  --line:rgba(180,220,255,.14);
  --line-2:rgba(180,220,255,.22);
  --text:#f5f9ff;
  --muted:#93a9c4;
  --blue:#3ea7ff;
  --cyan:#54e0ff;
  --green:#69e4bd;
  --amber:#ffc86e;
  --shadow:0 30px 80px rgba(0,0,0,.38);
  --radius:26px;
  --radius-sm:18px;
  --max:1180px;
}

html[data-theme="light"]{
  --bg:#eef4f8; --bg-2:#f7fafc;
  --panel:linear-gradient(160deg,rgba(255,255,255,.94),rgba(238,245,249,.94));
  --line:rgba(32,76,115,.13); --line-2:rgba(32,76,115,.2);
  --text:#102033; --muted:#60758b;
  --shadow:0 28px 70px rgba(34,66,96,.13);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  margin:0;
  color:var(--text);
  font:16px/1.68 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(circle at 18% 14%, rgba(42,123,255,.16), transparent 38%),
    radial-gradient(circle at 84% 8%,  rgba(73,224,255,.13), transparent 34%),
    linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 46%,var(--bg) 100%);
  background-attachment:fixed;
}
html[data-theme="light"] body{
  background:
    radial-gradient(circle at 18% 14%, rgba(42,123,255,.10), transparent 34%),
    radial-gradient(circle at 84% 8%,  rgba(73,224,255,.09), transparent 30%),
    linear-gradient(180deg,#f8fbfd 0%,#edf4f8 44%,#f7fafc 100%);
}

/* the faint grid that stops the gradients looking like a screensaver */
body:before{
  content:"";
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(rgba(180,220,255,.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(180,220,255,.024) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 22%, #000 0%, transparent 72%);
}
html[data-theme="light"] body:before{
  background-image:
    linear-gradient(rgba(16,32,51,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,32,51,.028) 1px, transparent 1px);
}

a{color:var(--cyan); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max); margin:0 auto; padding:0 26px}

/* ---------- nav ---------- */

.nav-wrap{
  position:sticky; top:0; z-index:30;
  backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(6,16,28,.92),rgba(6,16,28,.62));
  border-bottom:1px solid var(--line);
}
html[data-theme="light"] .nav-wrap{
  background:linear-gradient(180deg,rgba(248,251,253,.94),rgba(248,251,253,.72));
}
.nav{display:flex; align-items:center; gap:22px; height:66px}
.brand{display:flex; align-items:center; gap:11px; font-weight:750; letter-spacing:.02em; color:var(--text)}
.brand img{width:30px; height:30px}
.nav-links{margin-left:auto; display:flex; gap:24px; font-size:14.5px; color:var(--muted)}
.nav-links a{color:inherit}
.nav-links a:hover{color:var(--text); text-decoration:none}
.icon-btn{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:12px; cursor:pointer;
  background:var(--panel); border:1px solid var(--line); color:var(--text);
  font-size:15px;
}
.icon-btn:hover{border-color:var(--line-2)}

/* ---------- buttons ---------- */

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  min-height:52px; padding:0 26px; border-radius:15px;
  border:1px solid rgba(255,255,255,.10);
  font-weight:680; font-size:16px; transition:.22s ease; cursor:pointer;
}
.btn:hover{text-decoration:none; transform:translateY(-1px)}
.btn.primary{
  color:#04111d;
  background:linear-gradient(135deg,#9fe8ff,#5bc9ff 47%,#64e1bb);
  box-shadow:0 18px 50px rgba(62,167,255,.24);
}
.btn.primary:hover{box-shadow:0 22px 60px rgba(62,167,255,.34)}
.btn.secondary{background:var(--panel); border-color:var(--line); color:var(--text)}
.btn.secondary:hover{border-color:var(--line-2)}

/* ---------- hero ---------- */

.hero{position:relative; padding:76px 0 54px; overflow:hidden}
/* Behind the words, not in front of them. Low enough that the headline stays the loudest
   thing on the page - a background that competes with the title is decoration, not design. */
.hero-wave{
  position:absolute; left:0; right:0; top:50%; transform:translateY(-50%);
  height:300px; z-index:0; opacity:.30; pointer-events:none;
  mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);
}
html[data-theme="light"] .hero-wave{opacity:.42}
.hero-wave svg{width:100%; height:100%; display:block}
.hero .wrap{position:relative; z-index:1}

.hero-grid{display:grid; grid-template-columns:1.04fr .96fr; gap:56px; align-items:center}

.pill{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 15px; border-radius:999px; font-size:13px; letter-spacing:.04em;
  color:var(--cyan); background:rgba(84,224,255,.09);
  border:1px solid rgba(84,224,255,.22);
}
.hero h1{
  margin:20px 0 14px; font-size:clamp(36px,5.4vw,58px); line-height:1.06;
  letter-spacing:-.028em; font-weight:760;
}
.hero h1 .soft{color:var(--muted); font-weight:600; display:block; font-size:.62em; letter-spacing:-.01em; margin-top:10px}
.hero-copy{color:var(--muted); font-size:18px; max-width:56ch; margin:0 0 30px}
.get{display:flex; flex-wrap:wrap; gap:14px; align-items:center}
.fineprint{margin:16px 0 0; font-size:13.5px; color:var(--muted)}

.logo-card{
  background:var(--panel); border:1px solid var(--line);
  border-radius:var(--radius); box-shadow:var(--shadow);
  padding:26px; text-align:center;
}
.logo-card img{width:100%; max-width:360px; height:auto; border-radius:14px}
.tags{display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin-top:20px}
.tag{
  font-size:12.5px; padding:6px 12px; border-radius:999px;
  color:var(--muted); border:1px solid var(--line); background:rgba(255,255,255,.02);
}

/* ---------- sections ---------- */

section{padding:78px 0; position:relative}
.section-head{max-width:70ch; margin-bottom:34px}
.kicker{
  margin:0 0 10px; font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--blue); font-weight:700;
}
h2{margin:0 0 12px; font-size:clamp(26px,3.4vw,38px); line-height:1.14; letter-spacing:-.022em; font-weight:740}
.section-head p{margin:0; color:var(--muted); font-size:17px}
section p{max-width:74ch}
p.body{color:var(--muted); margin:0 0 16px; font-size:16.5px}

.panel{
  background:var(--panel); border:1px solid var(--line);
  border-radius:var(--radius); box-shadow:var(--shadow);
}

.shot{overflow:hidden; margin:30px 0 0}
.shot img{display:block; width:100%; height:auto}
.shot figcaption{padding:14px 20px; font-size:13.5px; color:var(--muted); border-top:1px solid var(--line)}

.grid{display:grid; gap:18px; grid-template-columns:repeat(auto-fit,minmax(258px,1fr)); margin-top:30px}
.feature{padding:26px 26px 28px}
.feature .mark{
  display:inline-flex; align-items:center; justify-content:center;
  width:42px; height:42px; border-radius:13px; margin-bottom:14px; font-size:19px;
  background:linear-gradient(135deg,rgba(84,224,255,.16),rgba(105,228,189,.13));
  border:1px solid rgba(84,224,255,.20); color:var(--cyan);
}
.feature h3{margin:0 0 8px; font-size:17px; font-weight:700}
.feature p{margin:0; color:var(--muted); font-size:14.8px}

.steps{display:grid; gap:18px; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); margin-top:30px}
.step{padding:26px}
.step .num{font-size:12.5px; letter-spacing:.14em; color:var(--blue); font-weight:700; margin-bottom:10px}
.step h3{margin:0 0 8px; font-size:17px}
.step p{margin:0; color:var(--muted); font-size:14.8px}

.note{
  margin-top:26px; padding:20px 24px; border-radius:var(--radius-sm);
  border:1px solid rgba(255,200,110,.24); background:rgba(255,200,110,.06);
  color:var(--muted); font-size:15.2px;
}
.note strong{color:var(--text)}

/* ---------- downloads ---------- */

.dl{display:grid; gap:16px; grid-template-columns:repeat(auto-fit,minmax(268px,1fr)); margin-top:30px}
.dl a{padding:24px; display:block; color:inherit}
.dl a:hover{text-decoration:none; border-color:var(--line-2)}
.dl .name{font-weight:700; font-size:16px; margin-bottom:6px; color:var(--text)}
.dl .name .best{
  margin-left:8px; font-size:11px; letter-spacing:.08em; text-transform:uppercase;
  color:#04111d; background:linear-gradient(135deg,#9fe8ff,#64e1bb);
  padding:3px 8px; border-radius:999px; font-weight:800;
}
.dl .desc{color:var(--muted); font-size:14.5px; margin-bottom:12px}
.dl .size{font:12.5px/1 Consolas,monospace; color:var(--blue)}

/* ---------- release notes ---------- */

.release{padding:30px 32px}
.release-head{display:flex; flex-wrap:wrap; align-items:baseline; gap:14px; margin-bottom:6px}
.release-head .ver{font-size:22px; font-weight:740}
.release-head .when{color:var(--muted); font-size:14px}
.release-body{
  margin-top:16px; padding-top:18px; border-top:1px solid var(--line);
  color:var(--muted); font-size:15.2px;
}
.release-body strong{color:var(--text)}
.release-body p{margin:0 0 12px}
.release-body code{
  font:13px/1.5 Consolas,monospace; padding:2px 6px; border-radius:6px;
  background:rgba(180,220,255,.08); color:var(--cyan);
}

footer{padding:52px 0 70px; color:var(--muted); font-size:14px; border-top:1px solid var(--line)}
footer p{margin:0 0 10px; max-width:74ch}
footer .sep{opacity:.5; margin:0 8px}

@media (max-width:880px){
  .hero-grid{grid-template-columns:1fr; gap:34px}
  .nav-links{display:none}
  section{padding:58px 0}
}