/* AI SUMMIT 2026 — shared design system
   Source of truth for all content: /FACTS.md  */

:root{
  --bg:#06070d;
  --bg-2:#090b14;
  --tile:#101320;
  --tile-2:#161a2b;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --ink:#eef2ff;
  --muted:#98a0bd;
  --dim:#5d6486;
  --cy:#00d8ff;
  --cy-2:#5eeaff;
  --vi:#7b5cff;
  --vi-2:#a78bff;
  --gold:#ffc247;
  --ok:#2ee6a8;
  --warn:#ffb020;
  --glow:rgba(0,216,255,.30);
  --grad:linear-gradient(112deg,var(--cy-2) 0%,var(--cy) 38%,var(--vi) 100%);
  --grad-soft:linear-gradient(140deg,rgba(0,216,255,.14),rgba(123,92,255,.10));
  --r:22px;
  --disp:'Unbounded',system-ui,sans-serif;
  --body:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  --wrap:1220px;
}

*{margin:0;padding:0;box-sizing:border-box}
::selection{background:var(--cy);color:#001018}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--body);background:var(--bg);color:var(--ink);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--disp);font-weight:600;line-height:1.15}
table{border-collapse:collapse;width:100%}

/* ---------- Layout ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sec{padding:92px 0;position:relative}
.sec-sm{padding:60px 0}
@media(max-width:760px){.sec{padding:64px 0}}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;background:rgba(6,7,13,.78);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.nav-in{max-width:var(--wrap);margin:0 auto;padding:13px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-family:var(--disp);font-weight:700;font-size:13px;letter-spacing:.03em;display:flex;align-items:center;gap:10px;flex-shrink:0}
.beacon{width:11px;height:11px;border-radius:50%;background:var(--cy);
  box-shadow:0 0 0 4px rgba(0,216,255,.16),0 0 18px var(--glow);animation:beacon 2.4s ease-in-out infinite}
@keyframes beacon{0%,100%{box-shadow:0 0 0 4px rgba(0,216,255,.16),0 0 14px var(--glow)}
  50%{box-shadow:0 0 0 7px rgba(0,216,255,.05),0 0 26px var(--glow)}}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:13px;font-weight:500;color:var(--muted);transition:color .2s;white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--cy-2)}
.nav-cta{display:flex;gap:10px;align-items:center;flex-shrink:0}
@media(max-width:1080px){.nav-links{display:none}}
@media(max-width:520px){.nav-cta .btn-ghost{display:none}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;cursor:pointer;border:0;
  font-family:var(--body);font-weight:600;font-size:13.5px;border-radius:12px;padding:12px 22px;transition:.22s;white-space:nowrap}
.btn-pri{background:var(--cy);color:#00161d}
.btn-pri:hover{background:var(--cy-2);transform:translateY(-2px);box-shadow:0 10px 30px var(--glow)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line-2)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1px var(--cy);color:var(--cy-2)}
.btn-lg{padding:16px 32px;font-size:15px;border-radius:14px}
.arr{transition:transform .22s}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- Section headings ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;
  letter-spacing:.24em;text-transform:uppercase;color:var(--cy);margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--cy);opacity:.7}
.title{font-family:var(--disp);font-size:clamp(34px,5.4vw,64px);font-weight:800;line-height:.98;letter-spacing:-.02em}
.title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:16px;max-width:620px;margin-top:18px}

/* ---------- Tiles / bento ---------- */
.tile{background:var(--tile);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:border-color .25s,transform .25s}
.tile:hover{border-color:var(--line-2)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted)}
.badge-cy{color:var(--cy);border-color:rgba(0,216,255,.4);background:rgba(0,216,255,.07)}
.badge-gold{color:var(--gold);border-color:rgba(255,194,71,.4);background:rgba(255,194,71,.07)}
.badge-warn{color:var(--warn);border-color:rgba(255,176,32,.4);background:rgba(255,176,32,.07)}

/* ---------- Tables ---------- */
.tbl-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--tile)}
.tbl{min-width:720px;font-size:14px}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
.tbl thead th{font-family:var(--disp);font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cy);background:var(--tile-2);position:sticky;top:0;white-space:nowrap}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr:hover{background:rgba(255,255,255,.02)}
.tbl .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl .ctr{text-align:center}
.yes{color:var(--ok);font-weight:700}
.no{color:var(--dim)}
.rowhead{font-weight:600;color:var(--ink)}

/* ---------- Price cards ---------- */
.price{font-family:var(--disp);font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1;letter-spacing:-.02em}
.price small{font-family:var(--body);font-size:13px;font-weight:600;color:var(--muted);letter-spacing:0}
.price-was{font-size:14px;color:var(--dim);text-decoration:line-through;font-weight:500}

/* ---------- Notice ---------- */
.notice{border:1px solid rgba(255,176,32,.3);background:rgba(255,176,32,.06);border-radius:16px;padding:18px 22px;
  font-size:13.5px;color:var(--muted);display:flex;gap:14px;align-items:flex-start}
.notice b{color:var(--warn)}
.notice-cy{border-color:rgba(0,216,255,.28);background:rgba(0,216,255,.06)}
.notice-cy b{color:var(--cy)}

/* ---------- Footer ---------- */
.foot{border-top:1px solid var(--line);padding:56px 0 40px;background:var(--bg-2)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot h4{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--cy);margin-bottom:16px;font-weight:700}
.foot a{display:block;font-size:13.5px;color:var(--muted);padding:5px 0;transition:color .2s}
.foot a:hover{color:var(--cy-2)}
.foot-bot{margin-top:44px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--dim)}

/* ---------- Lang switch ---------- */
.lang{display:flex;gap:2px;border:1px solid var(--line-2);border-radius:10px;overflow:hidden}
.lang a{font-size:11.5px;font-weight:700;letter-spacing:.08em;padding:7px 11px;color:var(--dim);transition:.2s}
.lang a.on{background:var(--cy);color:#00161d}
.lang a:not(.on):hover{color:var(--cy-2)}

/* ---------- Utility ---------- */
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt48{margin-top:48px}
.center{text-align:center}
.muted{color:var(--muted)}
.dim{color:var(--dim)}
.fs13{font-size:13px}
.fs14{font-size:14px}
.glow-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.glow-bg::before{content:"";position:absolute;top:-30%;left:50%;transform:translateX(-50%);
  width:900px;height:700px;background:radial-gradient(ellipse at center,rgba(0,216,255,.13),transparent 62%);filter:blur(50px)}
.glow-bg::after{content:"";position:absolute;bottom:-40%;right:-10%;
  width:700px;height:700px;background:radial-gradient(ellipse at center,rgba(123,92,255,.13),transparent 62%);filter:blur(50px)}
.rel{position:relative;z-index:1}