:root{
  --bg:#0b1220; --panel:#111a2e; --panel-2:#16213a; --line:rgba(148,163,184,.16);
  --ink:#e8edf7; --muted:#93a1ba; --accent:#6366f1; --side:272px; --bar:56px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);
  font:15px/1.5 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
button,a{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
kbd{font:600 11px/1 ui-monospace,Menlo,monospace;padding:3px 6px;border-radius:5px;background:var(--panel-2);border:1px solid var(--line);color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}

.shell{display:grid;grid-template-columns:var(--side) 1fr;height:100%;height:100dvh}

/* sidebar */
.side{display:flex;flex-direction:column;gap:18px;padding:18px 14px;background:var(--panel);border-right:1px solid var(--line);min-height:0;overflow-y:auto}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px;text-decoration:none}
.brand b{display:block;font-size:16px;letter-spacing:-.01em}
.brand small{display:block;color:var(--muted);font-size:12px;margin-top:-2px}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,#6366f1,#8b5cf6)}
.brand-mark svg{width:22px;height:22px;stroke:#fff;stroke-width:2;fill:none;stroke-linejoin:round}
.nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav a{display:flex;align-items:center;gap:12px;padding:10px;border-radius:12px;text-decoration:none;color:var(--muted);transition:background .2s,color .2s}
.nav a:hover{background:var(--panel-2);color:var(--ink)}
.nav a.on{background:var(--panel-2);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.nav .ico{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#fff;background:var(--c)}
.nav .t{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.nav .t b{font-weight:600;font-size:14px;color:var(--ink)}
.nav .t small{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav .k{margin-left:auto}
.side-foot{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px;padding:10px 8px 0;border-top:1px solid var(--line)}

/* main */
.main{position:relative;min-width:0;min-height:0;display:flex;flex-direction:column}
.home{flex:1;overflow-y:auto;padding:clamp(20px,4vw,48px);background:
  radial-gradient(900px 400px at 85% -10%,rgba(99,102,241,.18),transparent 60%),
  radial-gradient(700px 400px at 0% 0%,rgba(16,185,129,.10),transparent 60%)}
.hero{max-width:760px;margin-bottom:clamp(20px,3vw,36px)}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#a5b4fc;background:rgba(99,102,241,.14);padding:5px 11px;border-radius:99px}
.hero h1{margin:14px 0 10px;font-size:clamp(26px,4.2vw,44px);line-height:1.1;letter-spacing:-.025em}
.hero p{margin:0;color:var(--muted);font-size:clamp(15px,1.6vw,17px)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:18px;max-width:1280px}
.card{position:relative;display:flex;flex-direction:column;border-radius:20px;overflow:hidden;text-decoration:none;background:var(--panel);border:1px solid var(--line);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;animation:rise .5s var(--ease) backwards;animation-delay:calc(var(--i)*70ms)}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--c) 55%,transparent);box-shadow:0 18px 40px -18px var(--c)}
.thumb{position:relative;height:150px;display:grid;place-items:center;overflow:hidden;
  background:radial-gradient(120% 120% at 20% 0%,color-mix(in srgb,var(--c) 70%,#fff 0%),color-mix(in srgb,var(--c) 28%,#0b1220) 70%)}
.thumb::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);background-size:26px 26px;
  transform:perspective(380px) rotateX(58deg) scale(2.2) translateY(28%);transform-origin:bottom;mask-image:linear-gradient(to top,#000,transparent 85%);-webkit-mask-image:linear-gradient(to top,#000,transparent 85%)}
.thumb svg{position:relative;width:58px;height:58px;stroke-width:1.5;color:#fff;filter:drop-shadow(0 8px 14px rgba(0,0,0,.35));transition:transform .4s var(--ease)}
.card:hover .thumb svg{transform:scale(1.12) translateY(-3px)}
.num{position:absolute;top:12px;left:12px;font-size:12px;font-weight:700;color:#fff;background:rgba(0,0,0,.28);padding:2px 9px;border-radius:99px;backdrop-filter:blur(6px)}
.body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.body h3{margin:0;font-size:18px;letter-spacing:-.01em}
.body p{margin:0;color:var(--muted);font-size:14px;flex:1}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.chips span{font-size:11.5px;font-weight:500;padding:3px 9px;border-radius:99px;background:var(--panel-2);color:var(--muted);border:1px solid var(--line)}
.launch{display:flex;align-items:center;gap:6px;margin-top:8px;font-weight:600;font-size:14px;color:var(--c);filter:brightness(1.35)}
.launch svg{width:16px;height:16px;transition:transform .25s var(--ease)}
.card:hover .launch svg{transform:translateX(4px)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}

/* viewer */
.viewer{flex:1;display:flex;flex-direction:column;min-height:0}
.viewer[hidden],.home[hidden],.tips[hidden]{display:none}
.vbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;background:var(--panel);border-bottom:1px solid var(--line)}
.vtitle{display:flex;align-items:center;gap:10px;min-width:0}
.vtitle>div{min-width:0}
.vtitle b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vtitle small{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:10px;height:10px;border-radius:50%;background:var(--c,var(--accent));box-shadow:0 0 0 4px color-mix(in srgb,var(--c,var(--accent)) 25%,transparent);flex:none}
.vactions{display:flex;gap:6px;flex:none}
.btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 12px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:13px;font-weight:500;transition:background .2s,border-color .2s}
.btn:hover,.btn[aria-pressed=true]{background:#1d2b4a;border-color:rgba(165,180,252,.4)}
.tips{display:flex;flex-wrap:wrap;gap:8px 22px;padding:12px 16px;background:var(--panel-2);border-bottom:1px solid var(--line);color:var(--muted);font-size:13.5px}
.tips li{list-style:none;position:relative;padding-left:14px}
.tips li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:50%;background:var(--c)}
.tips ul{display:contents;margin:0;padding:0}
.tips b{color:var(--ink);font-weight:600}
.frame-wrap{position:relative;flex:1;min-height:0;background:#000}
.frame-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#fff}
.loader{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;gap:14px;align-items:center;justify-content:center;background:var(--bg);color:var(--muted);transition:opacity .35s;pointer-events:none}
.loader.done{opacity:0}
.loader i{width:34px;height:34px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--c,var(--accent));animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* mobile bar */
.mbar{display:none}
.icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--panel-2);border:1px solid var(--line)}
.scrim{display:none}

@media (max-width:900px){
  .shell{grid-template-columns:1fr;grid-template-rows:var(--bar) 1fr}
  .mbar{display:flex;align-items:center;gap:10px;padding:0 12px;padding-top:env(safe-area-inset-top);background:var(--panel);border-bottom:1px solid var(--line)}
  .mbar-title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .mbar-spacer{flex:1}
  .side{position:fixed;z-index:30;top:0;bottom:0;left:0;width:min(84vw,300px);transform:translateX(-102%);transition:transform .32s var(--ease);box-shadow:20px 0 50px rgba(0,0,0,.45)}
  .shell.open .side{transform:none}
  .scrim{display:block;position:fixed;inset:0;z-index:25;background:rgba(2,6,16,.6);opacity:0;pointer-events:none;transition:opacity .3s}
  .shell.open .scrim{opacity:1;pointer-events:auto}
  .side-foot{display:none}
  .btn span{display:none}
  .btn{width:38px;padding:0;justify-content:center}
  .vbar{padding:8px 12px}
  .thumb{height:120px}
}
@media (max-width:480px){ .grid{gap:14px} .tips{flex-direction:column;gap:6px} }
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}