:root{
  --bg:#0b0e12;
  --panel:#11151b;
  --text:#e6ebf2;
  --muted:#9aa7b6;
  --brand:#7cc4ff;
  --brand-2:#48e6b6;
  --maxw:1100px;

  --radius-sm:8px;
  --radius:12px;
  --radius-lg:14px;

  --gap-xs:6px;
  --gap-sm:10px;
  --gap:16px;
  --gap-lg:24px;
  --gap-xl:32px;

  --shadow:0 10px 30px rgba(0,0,0,.25);
  --border:#1b2330;
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:radial-gradient(1200px 500px at 20% 0%,#0e1319,transparent 60%),var(--bg);
  color:var(--text);
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,"Apple Color Emoji","Segoe UI Emoji";
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gap-lg)}
@media (max-width:480px){.container{padding:0 var(--gap)}}

/* ---- Header / Nav ------------------------------------------------------- */
header{
  position:sticky;top:0;z-index:10;
  backdrop-filter:blur(8px);
  background:rgba(11,14,18,.7);
  border-bottom:1px solid #1c2430;
}
.nav{
  height:64px;
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--gap);
}
.brand{
  display:flex;align-items:center;gap:var(--gap-sm);
  font-weight:700;letter-spacing:.3px;white-space:nowrap;
}
.logo{
  width:32px;height:32px;border-radius:6px;
  background:url("../img/thumbnail.png") center/cover no-repeat;
  flex:0 0 32px;
}
.site-name{white-space:nowrap}

.nav-actions{
  display:flex;align-items:center;gap:var(--gap-sm);
}
.nav .btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 14px;
  border:1px solid #243142;border-radius:var(--radius-sm);
  font-weight:600;font-size:14px;
  background:rgba(255,255,255,.03);
  transition:transform .15s ease,border-color .15s ease,background .15s ease,box-shadow .15s ease,color .15s ease;
}
.nav .btn:hover{border-color:var(--brand);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#061016;box-shadow:0 0 12px rgba(72,230,182,.25)}
.nav .btn:active{transform:translateY(1px)}
.nav .sep{display:none} /* no dot in header */

/* allow wrap on small screens */
@media (max-width:480px){
  .nav{flex-wrap:wrap;height:auto;padding:8px 0}
  .nav-actions{width:100%;justify-content:flex-end}
}

/* ---- Hero --------------------------------------------------------------- */
.hero{
  position:relative;
  padding:clamp(56px,8vw,120px) var(--gap-lg) 56px;
  min-height:48vh;
  display:flex;flex-direction:column;justify-content:center;
  background:linear-gradient(180deg,#0f141b 0%,#0e1218 100%);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(1100px 450px at 20% 0%,rgba(20,27,36,.55),transparent 60%),
    linear-gradient(180deg,rgba(11,14,18,.22) 0%,rgba(11,14,18,.55) 55%,rgba(11,14,18,.85) 100%);
  pointer-events:none;z-index:0;
}
.hero h1,.hero p,.hero .cta{position:relative;z-index:1}
.hero h1{
  margin:0 0 14px;
  font-size:clamp(30px,6vw,54px);
  line-height:1.15;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
  letter-spacing:.2px;
}
.hero p{
  color:var(--muted);
  max-width:780px;
  margin:0 0 28px;
  text-shadow:0 1px 12px rgba(0,0,0,.35);
}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 18px;border:none;
  border-radius:12px;font-weight:700;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#061016;
  box-shadow:0 6px 20px rgba(72,230,182,.12);
  transition:transform .15s ease,box-shadow .15s ease,filter .15s ease;
}
.btn-primary:hover{filter:saturate(1.05);box-shadow:0 8px 24px rgba(72,230,182,.18)}
.btn-primary:active{transform:translateY(1px)}

/* ---- Notice Strip ------------------------------------------------------- */
.strip{
  margin-top:var(--gap);
  padding:20px 0;
  background:#0f1319;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  color:var(--muted);font-size:14px;
}

/* ---- Grid & Cards ------------------------------------------------------- */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap)}
.card{
  grid-column:span 12;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:16px;
  padding:20px;
  transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease;
}
.card:hover{border-color:#243142;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted)}
@media (min-width:720px){.card{grid-column:span 4}}

/* ---- Showcase (optional) ----------------------------------------------- */
.showcase{
  margin:40px 0 60px;
  padding:20px;
  border-radius:16px;
  border:1px dashed #263244;
  background:linear-gradient(180deg,rgba(31,41,55,.35),rgba(17,21,27,.35));
  text-align:center;color:var(--muted);
}
.showcase small{display:block;margin-top:8px}

/* ---- Footer ------------------------------------------------------------- */
footer{
  padding:40px 0;
  color:var(--muted);
  border-top:1px solid var(--border);
}
.foot-grid{
  display:flex;flex-wrap:wrap;
  gap:12px;justify-content:space-between;align-items:center;
}
.sep{opacity:.25;margin:0 8px}

/* ---- Mono --------------------------------------------------------------- */
.mono{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;
}

/* ---- Motion prefs ------------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* make inline links clearly visible */
.link-strong{
  color: var(--brand);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(124,196,255,.7);
  transition: color .15s ease, text-decoration-color .15s ease, background .15s ease;
}
.link-strong:hover{
  color: #a6d6ff;
  text-decoration-color: currentColor;
}
.link-strong:focus-visible{
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Ghost button (secondary action) */
.btn-ghost{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;                 /* matches .btn-primary */
  padding: 0 16px;
  border: 1px solid #243142;
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  color: var(--text);
  font-weight: 600;
  transition:
    background .15s ease,
    border-color .15s ease,
    color .15s ease,
    box-shadow .15s ease,
    transform .15s ease;
}

.btn-ghost:hover{
  border-color: var(--brand);
  background: rgba(124,196,255,0.08);
  color: #eaf4ff;
  box-shadow: 0 6px 18px rgba(72,230,182,0.12);
}

.btn-ghost:active{
  transform: translateY(1px);
}

.btn-ghost:focus-visible{
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 10px;
}

/* optional: small icon support */
.btn-ghost .icon{ margin-right: 8px; line-height: 0; }