/* Bankai Lab — home (AI Society layout) */
:root{
  --bg:#f3f0e6;--panel:#faf8f1;--line:#d9d3c3;--ink:#1c1a15;--ink2:#55503f;--ink3:#8a8473;
  --green:#f07a1a;--green-d:#b8550a;--yellow:#f6c63b;--accent:#e8670c;
  --ok:#2f8f5b;--warn:#c48318;--info:#2f6fb7;--lab:#7a4fb5;
  --sans:"Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
  --serif:"Noto Serif TC","Songti TC",serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root{--bg:#14130f;--panel:#1c1a16;--line:#34302a;--ink:#efeadf;--ink2:#bdb5a5;--ink3:#80796b;--ok:#4cc38a;--warn:#e0a84a;--info:#6aa6ec;--lab:#b08ae6}}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
[hidden]{display:none!important}

.app{display:grid;grid-template-columns:250px 1fr;gap:28px;padding:22px 24px 16px;max-width:1680px;margin:0 auto;min-height:100vh}
@media(max-width:900px){.app{grid-template-columns:1fr;gap:16px;padding:16px}}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:18px;position:sticky;top:22px;align-self:start}
@media(max-width:900px){.side{position:static}}
.brand{display:flex;flex-direction:column;gap:12px}
@media(max-width:900px){.brand{flex-direction:row;align-items:center;gap:14px}}
.mark{position:relative;width:96px;height:96px;flex:none}
.mark::before{content:"";position:absolute;inset:14px 0 0 14px;background:var(--ink)}
.mark span{position:absolute;inset:0 14px 14px 0;background:var(--green);border:3px solid var(--green-d);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:26px;line-height:1.05;text-align:center;transform:rotate(-4deg)}
@media(max-width:900px){.mark{width:64px;height:64px}.mark::before{inset:9px 0 0 9px}.mark span{inset:0 9px 9px 0;font-size:17px}}
.brand h1{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.1}
.brand h1 small{display:block;font-size:12px;font-weight:400;color:var(--ink3);margin-top:6px;letter-spacing:.04em}

.status{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--ink2)}
.status .live::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#5fd39a;margin-right:10px;box-shadow:0 0 0 3px rgba(95,211,154,.2)}
.status .mono{font-family:var(--mono);font-size:11px;color:var(--ink3);letter-spacing:.08em;padding-left:17px}
.ctrl{display:flex;gap:6px}
.ctrl button{border:1px solid var(--line);background:var(--panel);padding:6px 12px;border-radius:3px;font-size:12px;display:flex;align-items:center;gap:6px}
.ctrl button:hover{border-color:var(--ink3)}
@media(max-width:900px){.status,.ctrl{display:none}}

.sh{font-size:12px;color:var(--ink3);letter-spacing:.06em}
.cats{display:flex;flex-direction:column;gap:6px}
@media(max-width:900px){.cats{flex-direction:row;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.cats::-webkit-scrollbar{display:none}}
.cat{display:grid;grid-template-columns:30px 1fr auto;align-items:center;gap:8px;padding:9px 10px;border:1px solid var(--line);background:var(--panel);border-radius:4px;text-align:left;transition:border-color .15s,transform .15s}
.cat:hover{border-color:var(--ink3)}
.cat[aria-selected="true"]{border-color:var(--ink);box-shadow:3px 3px 0 var(--ink)}
.cat .ci{width:30px;height:30px;display:grid;place-items:center;border-radius:3px;background:var(--bg)}
.cat[aria-selected="true"] .ci{background:var(--green);color:#fff}
.cat .cn{font-weight:700;font-size:14px;line-height:1.25}
.cat .cn small{display:block;font-weight:400;font-size:11px;color:var(--ink3)}
.cat .cc{font-family:var(--mono);font-size:11px;color:var(--ink3)}
@media(max-width:900px){.cat{flex:none;grid-template-columns:26px auto;padding:7px 12px 7px 8px}.cat .cc,.cat .cn small{display:none}.cat .ci{width:26px;height:26px}}

.catinfo{border-top:1px solid var(--line);padding-top:14px}
.catinfo h2{font-size:14px;font-weight:700;margin-bottom:6px}
.catinfo p{font-size:13px;color:var(--ink2)}
.cstats{margin-top:10px;display:flex;flex-direction:column;gap:3px;font-size:13px}
.cstats div{display:flex;justify-content:space-between;gap:10px;color:var(--ink2)}
.cstats b{font-weight:500;color:var(--ink)}
@media(max-width:900px){.catinfo{display:none}}

/* ---------- stage ---------- */
.main{min-width:0;display:flex;flex-direction:column}
.frame{position:relative;border:2px solid var(--ink);background:#cfe3e8;height:min(78vh,820px);min-height:440px;overflow:hidden}
@media(max-width:900px){.frame{height:auto;aspect-ratio:4/3;min-height:0}}
@media(max-width:560px){.frame{aspect-ratio:3/4}}
.slides,.slide{position:absolute;inset:0}
.slide{animation:fade .6s ease}
@keyframes fade{from{opacity:0;transform:scale(1.015)}to{opacity:1;transform:none}}
.slide>img{width:100%;height:100%;object-fit:cover;display:block}
.phones{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:3%;padding:4% 4% 90px}
.phone{height:100%;aspect-ratio:375/700;max-width:30%;border:8px solid #111;border-radius:26px;overflow:hidden;background:#fff;box-shadow:0 20px 40px rgba(0,0,0,.35)}
.phone:nth-child(2){transform:translateY(-4%)}
.phone img{width:100%;height:100%;object-fit:cover;object-position:top;display:block}
@media(max-width:560px){.phones{padding:6% 3% 80px}.phone{border-width:5px;border-radius:16px}}
.scard{position:absolute;inset:0;padding:7% 8% 110px;display:flex;flex-direction:column;justify-content:center;gap:10px;overflow:hidden}
.scard .k{font-family:var(--mono);font-size:13px;letter-spacing:.12em;opacity:.75}
.scard b{font-family:var(--serif);font-size:clamp(32px,5vw,68px);line-height:1.15}
.scard ul{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:8px;font-size:clamp(15px,1.5vw,20px)}
.scard li::before{content:"— ";opacity:.6}
.scard .ghost{position:absolute;right:-30px;bottom:40px;opacity:.12}
@media(max-width:560px){.scard{padding:8% 7% 90px}.scard .ghost{display:none}}

.goto{position:absolute;top:18px;right:18px;z-index:3;display:flex;flex-direction:column;align-items:flex-start;gap:2px;background:var(--green);color:#fff;border:2px solid var(--ink);padding:12px 22px 10px;box-shadow:5px 5px 0 var(--ink);transition:transform .15s,box-shadow .15s,background .15s;animation:gpulse 2.4s ease-in-out infinite}
.goto .gl{font-size:20px;font-weight:800;letter-spacing:.02em;line-height:1.2}
.goto .gh{font-family:var(--mono);font-size:11px;opacity:.85}
.goto:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink);background:#ff8a2a;animation:none}
.goto:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--ink)}
@keyframes gpulse{0%,100%{box-shadow:5px 5px 0 var(--ink),0 0 0 0 rgba(240,122,26,.55)}50%{box-shadow:5px 5px 0 var(--ink),0 0 0 10px rgba(240,122,26,0)}}
@media (prefers-reduced-motion:reduce){.goto{animation:none}}
@media(max-width:560px){.goto{top:10px;right:10px;padding:8px 12px 6px;box-shadow:3px 3px 0 var(--ink)}.goto .gl{font-size:14px}.goto .gh{font-size:9px}}
.dots{position:absolute;top:24px;left:20px;z-index:3;display:flex;gap:6px}
.dots i{width:22px;height:4px;background:rgba(255,255,255,.45);border-radius:2px;overflow:hidden;position:relative}
.dots i.on::after{content:"";position:absolute;inset:0;background:#fff;transform-origin:left;animation:prog var(--dur,5s) linear forwards}
.paused .dots i.on::after{animation:none;transform:none}
@keyframes prog{from{transform:scaleX(0)}to{transform:scaleX(1)}}

.tabs{position:absolute;left:0;bottom:0;z-index:3;display:flex;align-items:flex-end;max-width:100%;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:none;display:flex;align-items:center;gap:10px;height:70px;min-width:152px;padding:0 18px;background:var(--tc);color:#1c1a15;border:1.5px solid var(--ink);border-bottom:0;margin-right:-1.5px;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);font-weight:700;font-size:14px;transition:height .2s}
.tab em{font-style:normal;font-family:var(--mono);font-size:11px;font-weight:400;opacity:.55;margin-left:auto;padding-left:8px}
.tab[aria-selected="true"]{height:96px}
.tab:hover{filter:brightness(1.04)}
@media(max-width:560px){.tab{height:52px;min-width:auto;padding:0 12px;font-size:12px;gap:6px}.tab[aria-selected="true"]{height:64px}.tab em{display:none}}

.under{display:flex;justify-content:space-between;gap:16px;font-size:11px;color:var(--ink3);padding:8px 2px 0;font-family:var(--mono);letter-spacing:.04em}
@media(max-width:700px){.under span:nth-child(2){display:none}}

/* ---------- detail ---------- */
.details{margin-top:22px}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px;background:var(--panel);border:1px solid var(--line);padding:22px 24px;animation:fade .4s ease}
@media(max-width:800px){.detail{grid-template-columns:1fr}}
.dh{display:flex;gap:14px;align-items:center;grid-column:1/-1}
.appicon{border-radius:14px;flex:none}
.dk{font-family:var(--mono);font-size:11px;color:var(--ink3);letter-spacing:.06em}
.detail h3{font-family:var(--serif);font-size:26px;line-height:1.3}
.detail h3 .st{font-family:var(--mono);font-size:12px;font-weight:400;vertical-align:middle;margin-left:6px}
.detail h3 .st::before{content:"● "}
.detail p{color:var(--ink2);font-size:15px}
.feats{list-style:none;display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start}
.feats li{font-size:13px;border:1px solid var(--line);background:var(--bg);padding:3px 10px;border-radius:999px}
.acts{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.btn{border:1.5px solid var(--ink);padding:9px 16px;font-weight:600;font-size:14px;background:var(--ink);color:var(--bg)}
.btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.store{display:inline-flex;align-items:center;gap:8px;background:#000;color:#fff;border-radius:8px;padding:6px 14px;font-weight:600;font-size:15px;line-height:1.1}
.store small{display:block;font-size:10px;font-weight:400}
.store.soon{background:transparent;color:var(--ink2);border:1.5px dashed var(--line);font-size:13px}

/* ---------- lower ---------- */
.lower{max-width:1680px;margin:0 auto;padding:24px 24px 0;display:grid;grid-template-columns:250px 1fr;gap:28px}
@media(max-width:900px){.lower{grid-template-columns:1fr;padding:16px}}
.lower .lbl{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.06em;padding-top:18px}
.faq{border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--accent)}
.faq details[open] summary::after{content:"−"}
.faq p{color:var(--ink2);font-size:14px;margin-top:8px;max-width:860px}
footer{max-width:1680px;margin:0 auto;padding:28px 24px 32px;font-size:12px;color:var(--ink3);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer a:hover{color:var(--ink)}
footer .links{display:flex;gap:16px;flex-wrap:wrap}
footer .disc{flex-basis:100%;border-top:1px solid var(--line);padding-top:14px;line-height:1.8}
.app>*{min-width:0}
.slide>video{width:100%;height:100%;object-fit:cover;display:block;background:#000}
@media (prefers-reduced-motion:reduce){.slide,.detail{animation:none}.tile img,.ncard .im img{transition:none}}
.cat .ci.img{background:none;overflow:hidden;border-radius:7px}.cat .ci.img img{width:100%;height:100%;display:block}.cat[aria-selected="true"] .ci.img{background:none;box-shadow:0 0 0 2px var(--green)}