@font-face{font-family:"Pretendard";src:url(/fonts/PretendardVariable.woff2) format("woff2-variations"),url(/fonts/PretendardVariable.woff2) format("woff2");font-weight:45 920;font-style:normal;font-display:swap}
/* Layout: white, airy page. One dark "studio" stage up top holding a live 3D board (the channel's video look), then quiet thumbnail-card grids. */
:root{
  --bg:#FFFFFF; --soft:#F5F6F8; --ink:#14181D; --muted:#626C77; --line:#E4E7EB;
  --accent:#F6C31C; --accent-ink:#8F6400; --on-accent:#15120A;
  --stage:#0B0E12; --stage-ink:#F4F6F8; --stage-muted:#A3ADB8; --stage-line:#2C343D; --stage-node:#151B21;
  --sans:Pretendard,"Noto Sans KR","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#101418; --soft:#171C22; --ink:#ECEFF2; --muted:#98A3AE; --line:#262D35;
    --accent:#F6C31C; --accent-ink:#F6C31C; --on-accent:#15120A;
    --stage:#07090C; --stage-ink:#F4F6F8; --stage-muted:#A3ADB8; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#101418; --soft:#171C22; --ink:#ECEFF2; --muted:#98A3AE; --line:#262D35;
  --accent:#F6C31C; --accent-ink:#F6C31C; --on-accent:#15120A;
  --stage:#07090C; --stage-ink:#F4F6F8; --stage-muted:#A3ADB8; color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
img{max-width:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;word-break:keep-all}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
h1,h2,h3,p{margin:0}
h1,h2,h3{text-wrap:balance;line-height:1.25;letter-spacing:-.02em}
.wrap{max-width:1120px;margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--bg)}
.top .wrap{display:flex;align-items:center;gap:28px;padding-block:14px}
.brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:17px;white-space:nowrap}
.brand svg{width:30px;height:30px}
.nav{display:flex;gap:24px;font-size:15px;font-weight:500;color:var(--muted);margin-left:auto}
.nav a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;background:var(--accent);color:var(--on-accent);font-weight:700;font-size:14px;padding:10px 18px;border-radius:999px;white-space:nowrap}
.btn:hover{filter:brightness(1.08)}
.btn.line{background:transparent;color:var(--stage-ink);box-shadow:inset 0 0 0 1px var(--stage-muted)}
@media (max-width:760px){.top .wrap{flex-wrap:wrap;gap:10px 16px}.top .btn{margin-left:auto}.nav{order:3;width:100%;margin-left:0;overflow-x:auto;gap:22px;padding-bottom:2px}.nav a{white-space:nowrap}}

/* hero stage */
.stage{position:relative;background:var(--stage);color:var(--stage-ink);border-radius:20px;overflow:hidden;min-height:480px;display:flex;align-items:flex-end}
#gl{position:absolute;inset:0}
#gl canvas{display:block;width:100%;height:100%}
.stage::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--stage) 0%,transparent 55%);pointer-events:none}
.copy{position:relative;z-index:1;padding:44px;display:grid;gap:18px;max-width:560px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.copy h1{font-size:clamp(32px,5vw,52px);font-weight:900}
.copy p{color:var(--stage-muted);font-size:17px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
@media (max-width:760px){
  .stage{min-height:560px}
  .stage::after{background:linear-gradient(0deg,var(--stage) 30%,transparent 70%)}
  .copy{padding:24px}
}

/* sections */
section{padding-block:64px 0}
section:last-of-type{padding-bottom:64px}
.head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 24px;margin-bottom:24px}
.head h2{font-size:clamp(24px,3.2vw,32px);font-weight:900}
.head p{color:var(--muted);font-size:15px}
.more{font-size:14px;font-weight:700;color:var(--accent-ink);white-space:nowrap}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.chip{font:500 14px var(--sans);color:var(--muted);background:var(--soft);border:0;border-radius:999px;padding:7px 15px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg)}

/* video cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px 20px}
.v{display:grid;gap:12px;align-content:start;min-width:0}
.thumb{aspect-ratio:16/9;max-width:100%;background:var(--stage);border-radius:14px;display:grid;align-content:space-between;padding:16px;overflow:hidden;transition:transform .2s}
.v:hover .thumb{transform:translateY(-3px)}
.thumb .k{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--accent)}
.thumb .big{font-weight:900;font-size:clamp(24px,3vw,30px);line-height:1.1;color:var(--stage-ink);letter-spacing:-.01em}
.thumb .big i{font-style:normal;color:var(--accent)}
.v h3{font-size:16px;font-weight:700}
.v p{font-size:14px;color:var(--muted);line-height:1.55}

/* dictionary */
.dict{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.entry{background:var(--soft);border-radius:14px;padding:20px;display:grid;gap:8px;align-content:start;min-width:0}
.entry b{font-family:var(--mono);font-weight:600;font-size:17px}
.entry span{font-size:12px;font-weight:700;color:var(--accent-ink)}
.entry p{font-size:15px;line-height:1.6}

/* courses */
.courses{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.course{border:1px solid var(--line);border-radius:16px;padding:28px;display:grid;gap:14px;align-content:start;min-width:0}
.course h3{font-size:21px;font-weight:900}
.course p{color:var(--muted);font-size:15px}
.badge{justify-self:start;font-size:12px;font-weight:700;border-radius:999px;padding:3px 11px;background:var(--soft);color:var(--muted)}
.badge.on{background:var(--accent);color:var(--on-accent)}
.tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin:0;font-size:13px;color:var(--muted)}
.tags li{background:var(--soft);border-radius:6px;padding:3px 9px}
.course .more{margin-top:4px}

/* about */
.about{background:var(--soft);border-radius:20px;padding:40px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:32px;align-items:start}
.about h2{font-size:clamp(22px,3vw,30px);font-weight:900;margin-bottom:14px}
.about p{color:var(--muted);max-width:34em}
.links{display:grid;gap:10px}
.links a,.links div{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--bg);border-radius:12px;padding:14px 18px;font-weight:700;font-size:15px}
.links small{font-family:var(--mono);font-weight:500;font-size:12px;color:var(--muted)}
.links a:hover{color:var(--accent-ink)}
@media (max-width:760px){.about{grid-template-columns:minmax(0,1fr);padding:24px}}
footer .wrap{padding-block:28px 36px;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;border-top:1px solid var(--line)}
@media (prefers-reduced-motion:reduce){.thumb{transition:none}}

/* notes + posts */
section.first{padding-block:40px 64px}
.h{font-size:clamp(28px,4vw,40px);font-weight:900}
a.chip{display:inline-block}
.chip[aria-current="page"]{background:var(--ink);color:var(--bg)}
.notes{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.note{background:var(--soft);border-radius:14px;padding:22px;display:grid;gap:8px;align-content:start;min-width:0}
.note span{font-size:12px;font-weight:700;color:var(--accent-ink)}
.note h3{font-size:17px;font-weight:700;line-height:1.4}
.note p{font-size:14px;color:var(--muted);line-height:1.6}
.note:hover h3{text-decoration:underline;text-underline-offset:3px}
.empty{color:var(--muted)}
.post{max-width:760px;padding-block:40px 72px}
.crumb{font-size:14px;color:var(--muted);margin-bottom:14px}
.crumb a:hover{color:var(--ink)}
.post h1{font-size:clamp(28px,4.4vw,40px);font-weight:900}
.meta{font-family:var(--mono);font-size:13px;color:var(--muted);margin-top:12px}
.prose{margin-top:32px;font-size:17px;line-height:1.85}
.prose>*+*{margin-top:20px}
.prose h2{font-size:24px;font-weight:900;margin-top:44px}
.prose ul,.prose ol{padding-left:22px}
.prose li+li{margin-top:6px}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose table{display:block;overflow-x:auto;border-collapse:collapse;font-size:15px;line-height:1.6}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.prose th{font-weight:700;border-bottom:2px solid var(--ink);white-space:nowrap}
.prose pre{background:var(--stage);color:var(--stage-ink);border-radius:12px;padding:18px;overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7}
.prose :not(pre)>code{font-family:var(--mono);font-size:.92em;background:var(--soft);border-radius:4px;padding:1px 6px}
.pn{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:56px}
.pn a{background:var(--soft);border-radius:12px;padding:16px 18px;font-weight:700;font-size:15px;display:grid;gap:4px}
.pn a.r{text-align:right}
.pn small{font-weight:500;font-size:12px;color:var(--muted)}
footer a:hover{color:var(--ink)}

/* roadmap */
.rm{display:grid;gap:24px}
.map{background:var(--stage);border-radius:20px;padding:14px}
.map svg{display:block;width:100%;height:auto}
.map .e{fill:none;stroke:var(--stage-line);stroke-width:2}
.map .e.on{stroke:var(--accent);stroke-dasharray:6 6;animation:flow 1s linear infinite}
.map .ah{fill:var(--stage-line)} .map .ah.on{fill:var(--accent)}
@keyframes flow{to{stroke-dashoffset:-12}}
.map .n{cursor:pointer;outline:none}
.map .n rect{fill:var(--stage-node);stroke:var(--stage-line);stroke-width:1.5}
.map .n .nm{fill:var(--stage-ink);font-weight:700;font-size:15px}
.map .n .no,.map .n .pg{fill:var(--stage-muted);font-family:var(--mono);font-size:11px}
.map .n:hover rect{stroke:var(--stage-muted)}
.map .n.pre rect{stroke:var(--accent)}
.map .n.sel rect{fill:var(--accent);stroke:var(--accent)}
.map .n.sel .nm,.map .n.sel .no,.map .n.sel .pg{fill:var(--on-accent)}
.map .n:focus-visible rect{stroke:var(--stage-ink);stroke-width:3}
.subj{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:24px 48px;align-items:start}
@media (max-width:860px){.subj{grid-template-columns:minmax(0,1fr)}}
.subj-head{display:grid;gap:12px;align-content:start}
.subj-head .no{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent-ink)}
.subj-head h3,.subj-head h1{font-size:clamp(24px,3vw,30px);font-weight:900}
.subj-head .goal{color:var(--muted)}
.rel{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;color:var(--muted)}
.rel a{font-weight:700;color:var(--ink);background:var(--soft);border-radius:999px;padding:3px 12px}
.rel a:hover{background:var(--line)}
.steps{list-style:none;margin:0;padding:0}
.step{display:grid;grid-template-columns:30px minmax(0,1fr);gap:14px;padding-bottom:22px;position:relative}
.step::before{content:"";position:absolute;left:14px;top:30px;bottom:0;width:2px;background:var(--line)}
.step:last-child{padding-bottom:0}
.step:last-child::before{display:none}
.ck{position:relative;width:30px;height:30px;cursor:pointer}
.ck input{position:absolute;inset:0;opacity:0;margin:0;cursor:pointer}
.ck span{display:grid;place-content:center;width:30px;height:30px;border-radius:50%;border:2px solid var(--line);background:var(--bg);font:600 12px var(--mono);color:var(--muted)}
.ck input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.ck input:focus-visible+span{outline:2px solid var(--accent);outline-offset:3px}
.step h4{font-size:17px;font-weight:700;margin:2px 0 4px;line-height:1.4}
.step p{font-size:15px;color:var(--muted);line-height:1.65}
.lk{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.lk a{font-size:13px;font-weight:700;border-radius:999px;padding:4px 13px;background:var(--soft)}
.lk a.simlk{background:var(--ink);color:var(--bg)}
.hint{font-size:13px;color:var(--muted)}
/* lab */
.sim{border:1px solid var(--line);border-radius:16px;padding:20px;display:grid;gap:18px;min-width:0}
.ctl{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px 22px;align-items:end}
.ctl label{display:grid;gap:6px;font-size:13px;font-weight:700;min-width:0}
.ctl label span{display:flex;justify-content:space-between;gap:8px}
.ctl output{font-family:var(--mono);font-weight:600;color:var(--accent-ink);font-variant-numeric:tabular-nums}
.ctl input[type=range]{width:100%;accent-color:var(--accent);margin:0}
.ctl select,.ctl input[type=text]{font:inherit;font-weight:500;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);width:100%}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.plot{background:var(--soft);border-radius:12px;overflow-x:auto;min-width:0}
.plot svg{display:block;width:100%;height:auto}
.plot svg.wide{min-width:560px}
.plot .ax{stroke:var(--line);stroke-width:1}
.plot .mk{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 4}
.plot .tr{fill:none;stroke:var(--ink);stroke-width:2.2;stroke-linejoin:round}
.plot .tr2{fill:none;stroke:var(--accent-ink);stroke-width:2;stroke-dasharray:6 5}
.plot text{fill:var(--muted);font-family:var(--mono);font-size:11px}
.plot text.key{fill:var(--accent-ink);font-weight:600}
.plot text.val{fill:var(--ink);font-size:13px;font-weight:600}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin:0}
.stats div{background:var(--soft);border-radius:10px;padding:10px 14px;min-width:0}
.stats dt{font-size:12px;color:var(--muted)}
.stats dd{margin:0;font-family:var(--mono);font-weight:600;font-size:17px;font-variant-numeric:tabular-nums}
.msg{font-size:14px;color:var(--accent-ink)}
.bldc{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:20px;align-items:center}
@media (max-width:720px){.bldc{grid-template-columns:minmax(0,1fr)}.bldc .plot{max-width:320px;justify-self:center;width:100%}}
.bldc .ring{fill:none;stroke:var(--line);stroke-width:2}
.bldc .coil{fill:var(--bg);stroke:var(--line);stroke-width:2}
.bldc .coil.hi{fill:var(--accent);stroke:var(--accent)}
.bldc .coil.lo{fill:var(--ink);stroke:var(--ink)}
.bldc .cl{fill:var(--muted);font-size:13px;font-weight:600}
.bldc .rn{fill:var(--accent)} .bldc .rs{fill:var(--muted)}
.bldc .rt{fill:var(--on-accent);font-size:18px;font-weight:600} .bldc .rt2{fill:var(--bg);font-size:18px;font-weight:600}
.bldc .fld{stroke:var(--ink);stroke-width:3;stroke-dasharray:2 5;stroke-linecap:round} .bldc .fldt{fill:var(--ink)}
.tbl{overflow-x:auto;min-width:0}
.tbl table{border-collapse:collapse;width:100%;font-size:14px;font-variant-numeric:tabular-nums}
.tbl th,.tbl td{padding:8px 12px;text-align:center;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{font-size:12px;color:var(--muted);font-weight:700}
.tbl td{font-family:var(--mono)}
.tbl tr.cur td{background:var(--accent);color:var(--on-accent);font-weight:600}
.labpage{max-width:900px;padding-block:40px 72px;display:grid;gap:28px}
.labpage h1{font-size:clamp(28px,4.4vw,40px);font-weight:900}
.labpage .lede{color:var(--muted);font-size:17px;margin-top:10px;max-width:38em}
.labpage .prose{margin-top:0}
.feature{margin-bottom:20px}
.feature h3{font-size:18px;font-weight:700;margin-bottom:12px}
.page{max-width:760px;padding-block:40px 72px}
.page h1{font-size:clamp(28px,4.4vw,40px);font-weight:900}
.ad{margin-block:32px;min-height:90px}
footer nav{display:flex;flex-wrap:wrap;gap:6px 16px}
@media (prefers-reduced-motion:reduce){.map .e.on{animation:none}}

/* ===== v3: cover cards ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:32px 24px}
.c{display:grid;gap:10px;align-content:start;min-width:0}
.cv{border-radius:16px;overflow:hidden;background:#0B0E12;aspect-ratio:16/10;max-width:100%;box-shadow:0 1px 0 rgba(0,0,0,.04),0 12px 32px -18px rgba(11,14,18,.45)}
.cv svg{display:block;width:100%;height:100%}
.c .cv{transition:transform .25s ease,box-shadow .25s ease;margin-bottom:6px}
.c:hover .cv{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(11,14,18,.6)}
.tag{justify-self:start;font-size:12px;font-weight:700;color:var(--muted);background:var(--soft);border-radius:999px;padding:3px 11px}
.tag.hot{background:var(--accent);color:var(--on-accent)}
.c h3{font-size:18px;font-weight:700;line-height:1.4}
.c p{font-size:14px;color:var(--muted);line-height:1.6}
.c:hover h3{text-decoration:underline;text-underline-offset:4px}
.feat{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:32px;align-items:center;background:var(--soft);border-radius:24px;padding:20px;margin-bottom:36px}
.feat .ft{display:grid;gap:12px;align-content:center;padding:8px 12px}
.feat h3{font-size:clamp(22px,2.6vw,30px);font-weight:900}
.feat p{color:var(--muted)}
.feat:hover .more{text-decoration:underline}
@media (max-width:760px){.feat{grid-template-columns:minmax(0,1fr);padding:14px;gap:14px}.feat .ft{padding:4px}}
.cv.hero{margin-top:24px}
h2.sub{font-size:22px;font-weight:900;margin:48px 0 18px}
.sgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.sc{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);border-radius:14px;padding:16px;min-width:0}
.sc i{flex:none;width:12px;height:12px;border-radius:50%;margin-top:6px}
.sc span{display:grid;gap:2px;min-width:0}
.sc small{font-family:var(--mono);font-size:11px;color:var(--muted)}
.sc b{font-size:16px}
.sc em{font-style:normal;font-size:13px;color:var(--muted);line-height:1.5}
.sc:hover{border-color:var(--ink)}
/* ebook detail */
.book{max-width:1080px;padding-block:40px 72px}
.bk{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;align-items:start;margin-bottom:40px}
@media (max-width:860px){.bk{grid-template-columns:minmax(0,1fr);gap:24px}}
.bi{display:grid;gap:14px;align-content:start}
.bi h1{font-size:clamp(28px,4vw,40px);font-weight:900}
.bi .lede{font-size:18px;font-weight:700;color:var(--accent-ink)}
.bi p{color:var(--muted)}
.dl{background:var(--soft);border-radius:16px;padding:20px;display:grid;gap:8px;justify-items:start;margin-top:8px}
.dl b{font-size:17px}
.dl p{font-size:14px}
.book .prose{max-width:760px}
/* lab wide */
.labpage.wide{max-width:1200px}

/* ===== graph (obsidian style) ===== */
.graph{position:relative;background:#0a0d11;border-radius:22px;overflow:hidden;height:clamp(600px,82vh,860px);color:#e9eef2;isolation:isolate;--pw:404px}
.graph.tall{height:clamp(600px,84vh,900px)}
.graph canvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:grab;touch-action:none}
.graph canvas:active{cursor:grabbing}
.graph canvas.hov{cursor:pointer}
.gtools{position:absolute;top:14px;left:14px;right:calc(var(--pw) + 14px);display:flex;flex-wrap:wrap;gap:8px;z-index:2;pointer-events:none}
.gtools>*{pointer-events:auto}
.gsearch{font:500 14px var(--sans);color:#e9eef2;background:rgba(22,28,35,.9);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:8px 12px;width:min(260px,100%)}
.gsearch::placeholder{color:#7d8996}
.gchip{font:600 13px var(--sans);color:#aab4be;background:rgba(22,28,35,.9);border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:7px 13px;cursor:pointer}
.gchip[aria-pressed="true"]{color:#14100c;background:#F6C31C;border-color:#F6C31C}
.gstat{position:absolute;right:calc(var(--pw) + 14px);bottom:14px;display:flex;gap:8px;align-items:center;z-index:2}
.gprog{font:600 12px var(--mono);color:#aab4be;background:rgba(22,28,35,.9);border-radius:999px;padding:7px 12px}
.glegend{position:absolute;left:14px;bottom:14px;display:flex;flex-wrap:wrap;gap:4px 12px;max-width:calc(100% - var(--pw) - 260px);z-index:2}
.glegend button{font:500 12px var(--sans);color:#aab4be;background:none;border:0;padding:2px 0;cursor:pointer;display:flex;align-items:center;gap:6px}
.glegend button:hover{color:#fff}
.gdot{display:inline-block;flex:none;width:9px;height:9px;border-radius:50%}
.gpanel{position:absolute;top:12px;right:12px;bottom:12px;width:380px;background:rgba(16,21,26,.88);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.08);border-radius:18px;overflow:auto;padding:22px;z-index:3;display:grid;gap:12px;align-content:start}
.gx{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;border:0;background:rgba(255,255,255,.08);color:#e9eef2;font-size:18px;cursor:pointer}
.gk{display:flex;align-items:center;gap:8px;font:600 12px var(--mono);color:#aab4be;padding-right:36px}
.gt{font-size:22px;font-weight:900;line-height:1.3;color:#f4f6f8}
.gd{font-size:14.5px;color:#b8c2cc;line-height:1.7}
.gsm{font:600 12px var(--mono);color:#8a96a3}
.gbar{height:6px;border-radius:3px;background:rgba(255,255,255,.08);overflow:hidden}
.gbar i{display:block;height:100%;border-radius:3px}
.gdone{display:flex;gap:10px;align-items:center;font-size:14px;font-weight:600;color:#e9eef2;background:rgba(255,255,255,.05);border-radius:10px;padding:10px 12px;cursor:pointer}
.gdone input{width:18px;height:18px;accent-color:#F6C31C;margin:0}
.gacts{display:flex;flex-wrap:wrap;gap:8px}
.gbtn{font:700 13px var(--sans);color:#14100c;background:#F6C31C;border:0;border-radius:999px;padding:9px 15px;cursor:pointer;display:inline-flex}
.gbtn.ghost{color:#e9eef2;background:rgba(255,255,255,.08)}
.gbtn:hover{filter:brightness(1.1)}
.gnav{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.gnav button{font:600 13px var(--sans);color:#e9eef2;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:10px;cursor:pointer}
.gnav button:last-child{text-align:right}
.gnav button:hover{border-color:rgba(255,255,255,.3)}
.gh{font-size:12px;font-weight:700;color:#8a96a3;letter-spacing:.04em;margin-top:6px}
.gh span{font-family:var(--mono);color:#5d6874}
.glist{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.glist button{width:100%;display:flex;gap:10px;align-items:flex-start;text-align:left;background:none;border:0;border-radius:10px;padding:8px 10px;color:#e9eef2;cursor:pointer;font:inherit}
.glist button:hover{background:rgba(255,255,255,.06)}
.glist .gdot{margin-top:7px}
.glist span{display:grid;gap:1px;min-width:0}
.glist b{font-size:14px;font-weight:600;line-height:1.45}
.glist small{font-size:12px;color:#8a96a3;line-height:1.45}
.gsteps{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.gsteps button{width:100%;display:flex;gap:10px;align-items:center;text-align:left;background:none;border:0;border-radius:8px;padding:7px 8px;color:#d3dbe2;cursor:pointer;font:500 14px var(--sans)}
.gsteps button:hover{background:rgba(255,255,255,.06)}
.gsteps em{font:600 11px var(--mono);font-style:normal;flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-content:center;background:rgba(255,255,255,.08);color:#aab4be}
.gsteps .ok em{background:#F6C31C;color:#14100c}
.gkey{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 14px;font-size:12px;color:#8a96a3}
.gkey li{display:flex;align-items:center;gap:6px}
.gkey i{display:inline-block;width:10px;height:10px;border-radius:50%}
.gkey .k1{background:#F6C31C;box-shadow:0 0 8px #F6C31C;width:13px;height:13px}
.gkey .k2{background:#2EC5CE;opacity:.7;width:7px;height:7px}
.gkey .k3{background:#e9eef2}
.gkey .k4{border:2px solid #3DDC97}
.gkey .k5{width:16px;height:0;border-radius:0;border-top:1.5px dashed #8a96a3}
.gmsg{position:absolute;inset:auto 16px 16px;color:#e9eef2}
@media (max-width:760px){
  .graph,.graph.tall{height:82vh;min-height:560px;--pw:0px}
  .gtools{right:14px}
  .gsearch{width:100%}
  .glegend{display:none}
  .gstat{right:14px;top:110px;bottom:auto}
  .gpanel{top:auto;left:8px;right:8px;bottom:8px;width:auto;max-height:46%;padding:18px}
  .graph.has-sel .gpanel{max-height:58%}
  .graph:not(.has-sel) .gpanel{gap:10px;padding:14px 16px}
  .graph:not(.has-sel) .gpanel .gd,.graph:not(.has-sel) .gpanel .gh,.graph:not(.has-sel) .gpanel .glist,.graph:not(.has-sel) .gpanel .gkey{display:none}
  .graph:not(.has-sel) .gpanel .gt{font-size:17px}
}

/* ===== 3D simulation ===== */
.sim3d{display:grid;gap:16px}
.stage3d{position:relative;height:clamp(440px,66vh,720px);background:#06080b;border-radius:22px;overflow:hidden;color:#e9eef2}
.stage3d canvas{display:block;width:100%;height:100%;touch-action:none}
.labels3d{position:absolute;inset:0;pointer-events:none}
.lb{font:600 11px var(--mono);color:#e9eef2;background:rgba(11,14,18,.72);border:1px solid rgba(255,255,255,.14);border-radius:6px;padding:2px 7px;white-space:nowrap;display:flex;align-items:center;gap:5px}
.lb i{display:inline-block;width:7px;height:7px;border-radius:50%}
.lb.sm{font-size:10px;padding:1px 6px}
.lb.pole{background:none;border:0;font-size:15px;text-shadow:0 1px 3px #000}
.lb.fet.on{background:#F6C31C;color:#14100c;border-color:#F6C31C}
.hud{position:absolute;z-index:2;display:flex;gap:8px;align-items:center;margin:0}
.hud.tl{top:16px;left:16px;background:rgba(16,21,26,.82);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:10px 14px;gap:12px}
.hk{font:600 11px var(--mono);color:#8a96a3;letter-spacing:.08em}
.hud.tl b{font:600 26px var(--mono);color:#F6C31C;line-height:1}
.hp{display:flex;align-items:center;gap:6px;font:600 15px var(--mono)}
.hp i{display:inline-block;width:9px;height:9px;border-radius:50%}
.hud.tr{top:16px;right:16px;flex-wrap:wrap;justify-content:flex-end;max-width:60%}
.hb{font:600 13px var(--sans);color:#d3dbe2;background:rgba(16,21,26,.82);border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:7px 13px;cursor:pointer}
.hb[aria-pressed="true"]{background:#F6C31C;color:#14100c;border-color:#F6C31C}
.hud.bl{left:16px;bottom:14px;flex-wrap:wrap;gap:6px 16px;font-size:12px;color:#aab4be;pointer-events:none}
.hud.bl span{display:flex;align-items:center;gap:6px}
.lg{display:inline-block;width:10px;height:10px;border-radius:50%}
.lg.src{background:#ffa51f;box-shadow:0 0 8px #ffa51f}
.lg.snk{background:#2f8cff;box-shadow:0 0 8px #2f8cff}
.b3-msg{position:absolute;inset:0;display:grid;place-content:center;margin:0;color:#8a96a3;font-size:14px}
.p3{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) minmax(0,1fr);gap:16px}
@media (max-width:1000px){.p3{grid-template-columns:minmax(0,1fr)}}
.card3{background:var(--soft);border-radius:18px;padding:18px;display:grid;gap:14px;align-content:start;min-width:0}
.card3 h4{margin:0;font-size:15px;font-weight:700}
.card3 h4 small{font-weight:500;color:var(--muted);font-size:12px;margin-left:6px}
.card3 .ctl{grid-template-columns:minmax(0,1fr)}
.card3 canvas{width:100%;height:230px;display:block;border-radius:12px}
.card3 .hint{margin:0}
.row3{display:flex;gap:8px;flex-wrap:wrap}
.b3b{font:700 14px var(--sans);color:var(--on-accent);background:var(--accent);border:0;border-radius:999px;padding:10px 18px;cursor:pointer}
.b3b.ghost{background:var(--bg);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.s3{grid-template-columns:1fr 1fr}
.s3 div{background:var(--bg)}
.pd{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;vertical-align:1px}
@media (max-width:760px){.stage3d{height:72vh;min-height:460px}.hud.tr{top:auto;bottom:52px;right:12px;max-width:none}.hud.bl .hint3{display:none}}
.lg.tgt{background:#F6C31C;box-shadow:0 0 8px #F6C31C}
.lg.err{background:#ff5a36;box-shadow:0 0 8px #ff5a36}
.lg.hi1{background:#ffd34d;box-shadow:0 0 8px #ffd34d}
.lg.lo0{background:#1f3f8a}
.lb.bit{font-size:10px;padding:1px 6px;background:rgba(10,20,45,.85);border-color:rgba(90,176,255,.35)}
.lb.bit.hi{background:rgba(60,48,8,.9);border-color:rgba(246,195,28,.6);color:#ffe08a}
.s3.col1{grid-template-columns:minmax(0,1fr)}
#uart-wave{height:132px}
.card3 .ctl label select,.card3 .ctl label input[type=text]{background:var(--bg)}

/* ===== v5: roadmap panel + tracks ===== */
body{letter-spacing:-.01em}
.glegend span{font:600 12px var(--sans);color:#aab4be;display:flex;align-items:center;gap:6px}
.gk{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font:700 11px var(--mono);letter-spacing:.06em;color:#8a96a3;padding-right:40px}
.glay{display:inline-flex;align-items:center;font:800 12px var(--sans);letter-spacing:0;color:#14100c;border-radius:6px;padding:3px 8px}
.gsub{font:600 13px var(--sans);color:#d3dbe2;background:rgba(255,255,255,.07);border:0;border-radius:6px;padding:4px 9px;cursor:pointer}
.gsub:hover{background:rgba(255,255,255,.14)}
.gno{font:600 13px var(--sans);letter-spacing:0;color:#aab4be}
.gt{font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.3}
.gd{font-size:16px;color:#c9d2db;line-height:1.75}
.ggoal{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px 14px;font-size:15px;line-height:1.6;color:#e9eef2;display:grid;gap:4px}
.ggoal small{font-size:11px;font-weight:800;color:#F6C31C;letter-spacing:.06em}
.gprow{display:flex;align-items:center;gap:10px}
.gprow .gbar{flex:1}
.gprow span{font:600 12px var(--mono);color:#8a96a3}
.gsteps button{font:500 14.5px var(--sans);padding:8px 8px}
.gsteps span{flex:1;min-width:0}
.gt3{font:800 10px var(--mono);font-style:normal;color:#14100c;background:#3CC8D8;border-radius:4px;padding:1px 5px}
.gh{font-size:12px;font-weight:800;color:#8a96a3;letter-spacing:.06em;margin-top:8px}
.glist{gap:6px}
.glist button{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);padding:10px 12px;align-items:center}
.glist button:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16)}
.glist .gdot{margin-top:0;align-self:flex-start;margin-top:6px}
.glist span{flex:1;gap:2px}
.glist small{font-size:11.5px;font-weight:700;color:#8a96a3}
.glist b{font-size:15px;font-weight:700}
.glist em{font-style:normal;font-size:13px;color:#F6C31C;line-height:1.5}
.gar{font-style:normal;color:#5d6874;font-size:14px}
.gnav button{display:grid;gap:2px;text-align:left;font:600 13.5px var(--sans);line-height:1.4}
.gnav button small{font-size:11px;font-weight:700;color:#8a96a3}
.gnav button:last-child small{text-align:right}
.gdone{font-size:14.5px}
.glayer{display:grid;gap:8px;padding:12px 0;border-top:1px solid rgba(255,255,255,.07)}
.glh{display:flex;align-items:center;gap:8px}
.glh b{font-size:15px;font-weight:800}
.glh small{margin-left:auto;font:600 12px var(--mono);color:#8a96a3}
.gchips{display:flex;flex-wrap:wrap;gap:6px}
.gchips button{font:600 13px var(--sans);color:#d3dbe2;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:999px;padding:6px 11px;cursor:pointer}
.gchips button:hover{background:rgba(255,255,255,.12)}
.gkey .k2{background:#3CC8D8}
.gkey .k4{border-color:#3CC8D8}
/* tracks */
.layer{margin-top:64px}
.lh{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 14px;margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.lh .ln{font:800 15px var(--mono)}
.lh h2{font-size:clamp(24px,3vw,30px);font-weight:800;letter-spacing:-.02em}
.lh p{color:var(--muted);font-size:15px}
.tc .tags{margin-top:4px}
.tc .tags li{font-size:12px}
.subj-head .why{font-size:16px;line-height:1.7;color:var(--ink)}
@media (max-width:760px){.graph,.graph.tall{--pw:0px;height:84vh;min-height:600px}}

.graph.tall{width:min(1600px,calc(100vw - 48px));left:50%;transform:translateX(-50%)}
.layer .cards{grid-auto-flow:column;grid-auto-columns:minmax(270px,300px);grid-template-columns:none;overflow-x:auto;padding-bottom:12px;scroll-snap-type:x proximity;scrollbar-width:thin}
.layer .cards>*{scroll-snap-align:start}
@media (max-width:760px){
  .graph.tall{width:auto;left:auto;transform:none}
  .gstat{top:62px;right:14px;bottom:auto}
  .gprog{display:none}
  .gtools{right:120px}
  .gsearch{width:100%}
}
@media (max-width:760px){.graph:not(.has-sel) .gpanel .glayer,.graph:not(.has-sel) .gpanel .gk{display:none}}
/* courses + about */
.c .meta{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.c.locked .cv{filter:grayscale(.6) brightness(.8)}
.intro{max-width:760px;margin-bottom:8px}
.intro h2{font-size:clamp(22px,3vw,28px);font-weight:800;margin-top:8px}
.phero{border-bottom:1px solid var(--line)}
.phero .wrap{max-width:760px;padding-block:56px 40px;display:grid;gap:14px;justify-items:start}
.phero .pill{font-size:13px;font-weight:700;color:var(--accent-ink);background:var(--soft);border-radius:999px;padding:5px 12px}
.phero .pill::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:7px;vertical-align:1px}
.phero h1{font-size:clamp(32px,5vw,46px);font-weight:900;letter-spacing:-.03em}
.phero p{font-size:18px;color:var(--muted)}
.page .prose h2{font-size:22px;font-weight:800}
/* header v2 */
.top{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 92%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px)}
.top .wrap{gap:8px 28px;padding-block:0;min-height:64px}
.brand{font-size:17px;letter-spacing:-.02em}
.nav{margin-left:8px;gap:2px;font-size:15px;font-weight:600}
.nav a{position:relative;color:var(--muted);padding:9px 13px;border-radius:9px;transition:color .15s,background .15s}
.nav a:hover{color:var(--ink);background:var(--soft)}
.nav a[aria-current="page"]{color:var(--ink);font-weight:800}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:13px;right:13px;bottom:-12px;height:3px;border-radius:3px 3px 0 0;background:var(--accent)}
.top .btn.yt{margin-left:auto;gap:7px;padding:9px 16px 9px 12px;font-size:14px;background:var(--ink);color:var(--bg);border-radius:10px}
.top .btn.yt svg{width:20px;height:20px}
.top .btn.yt:hover{filter:none;opacity:.88}
@media (max-width:760px){
  .top .wrap{min-height:0;padding-block:10px 0;gap:6px 12px}
  .nav{order:3;width:100%;margin:0 -6px;overflow-x:auto;scrollbar-width:none;gap:0}
  .nav::-webkit-scrollbar{display:none}
  .nav a{padding:10px 10px 12px;white-space:nowrap;font-size:14.5px}
  .nav a[aria-current="page"]::after{bottom:0;left:10px;right:10px}
  .top .btn.yt{padding:7px 12px 7px 9px;font-size:13px}
}
.cv img{display:block;width:100%;height:100%;object-fit:cover}
.gal{margin:8px 0 48px;display:grid;gap:14px}
.gal h2{font-size:24px;font-weight:800}
.gal h3{font-size:16px;font-weight:700;color:var(--muted);margin-top:10px}
.galg{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.galg.tall{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
.galg figure{margin:0;display:grid;gap:6px;min-width:0}
.galg img{width:100%;border-radius:12px;background:#0b0e12;aspect-ratio:16/9;object-fit:cover}
.galg.tall img{aspect-ratio:9/16}
.galg figcaption{font-size:13px;font-weight:600;color:var(--muted)}

/* card v2: bordered */
.c{border:1px solid var(--line);border-radius:18px;background:var(--bg);overflow:hidden;padding-bottom:20px;gap:10px;
  transition:border-color .2s ease,box-shadow .25s ease,transform .25s ease}
.c>*:not(.cv){margin-inline:20px}
.c>.cv{border-radius:0;box-shadow:none;margin:0 0 8px;border-bottom:1px solid var(--line)}
.c:hover{border-color:var(--accent);box-shadow:0 18px 40px -22px rgba(11,14,18,.45);transform:translateY(-3px)}
.c:hover .cv{transform:none;box-shadow:none}
.c:hover h3{text-decoration:none}
.c .meta,.meta{font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:0}
.c .tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0}
.c .tags li{font-size:12px;font-weight:600;color:var(--muted);background:var(--soft);border-radius:6px;padding:3px 8px}
.c .go{margin-top:auto;padding-top:6px;font-size:14px;font-weight:800;color:var(--ink)}
.c .go.muted{color:var(--muted)}
.c:hover .go{color:#B8860B}
.c.locked{border-style:dashed}
.c.locked:hover{border-color:var(--line);box-shadow:none;transform:none}
.c{display:flex;flex-direction:column}
.c>.tag{align-self:flex-start}
.c>h3,.c>p{margin-block:0}
.mailbox{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;border:1px solid var(--line);border-radius:14px;padding:16px 20px;background:var(--soft);margin:8px 0}
.mailbox span{font-size:13px;font-weight:700;color:var(--muted)}
.mailbox a{font-size:18px;font-weight:800;color:var(--ink);text-decoration:none;word-break:break-all}
.btn.sm{padding:7px 14px;font-size:13px;min-height:0;border:0;cursor:pointer;font-family:inherit}
.mailbox .btn.line{color:var(--ink);box-shadow:inset 0 0 0 1px var(--line);background:var(--bg)}
/* ---------- courses v2 ---------- */
.phead{display:grid;gap:12px;max-width:760px;margin-bottom:36px}
.phead h1{font-size:clamp(30px,4.6vw,46px);font-weight:900;letter-spacing:-.02em;text-wrap:balance}
.phead p{font-size:17px;color:var(--muted);line-height:1.7}
.pill{justify-self:start;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--on-accent);background:var(--accent);border-radius:999px;padding:4px 12px}
.cfeat{border:1px solid var(--line);border-radius:22px;overflow:hidden;background:var(--bg);margin-bottom:28px}
.cban{display:block;background:#0b0e12;line-height:0}
.cban img{display:block;width:100%;height:auto;aspect-ratio:auto}
.cbody,.chead{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:28px;padding:28px 32px}
.cmain{display:grid;gap:12px;align-content:start;min-width:0}
.cmain .tag{justify-self:start}
.cmain h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;line-height:1.3;text-wrap:balance}
.cmain h2 a:hover{text-decoration:underline;text-underline-offset:5px}
.cmain p{color:var(--muted);font-size:15.5px;line-height:1.7}
.cmain .tags,.cside .tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0}
.cmain .tags li{font-size:12.5px;font-weight:600;color:var(--muted);background:var(--soft);border-radius:6px;padding:4px 9px}
.cside{display:grid;gap:16px;align-content:start}
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;list-style:none;padding:0}
.stats li{border:1px solid var(--line);border-radius:14px;padding:14px 12px;display:grid;gap:2px;text-align:center;background:var(--soft)}
.stats b{font-size:26px;font-weight:900;letter-spacing:-.02em}
.stats span{font-size:12.5px;font-weight:600;color:var(--muted)}
.cta{display:flex;flex-wrap:wrap;gap:8px}
.cta .btn{justify-content:center;flex:1 1 160px;padding:13px 18px;font-size:15px}
.btn.line2{background:var(--bg);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.btn.line2:hover{box-shadow:inset 0 0 0 1px var(--ink);filter:none}
.cproc{border-top:1px solid var(--line);padding:26px 32px 32px;background:var(--soft)}
.lbl{font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--muted);margin-bottom:16px}
.cproc ol{list-style:none;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;counter-reset:none}
.cproc li{display:grid;gap:10px;align-content:start;background:var(--bg);border:1px solid var(--line);border-radius:14px;overflow:hidden;padding-bottom:14px}
.cproc figure{margin:0;aspect-ratio:16/10;background:#0b0e12;overflow:hidden}
.cproc figure img{width:100%;height:100%;object-fit:cover;display:block}
.cproc figure.tall img{object-position:center 35%}
.cproc li>div{padding:0 14px;display:grid;gap:4px}
.cproc .no{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--accent-ink)}
.cproc h3{font-size:15px;font-weight:800}
.cproc p{font-size:13px;color:var(--muted);line-height:1.55}
.clock{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:20px;align-items:center;border:1.5px dashed var(--line);border-radius:22px;padding:24px 28px}
.clock .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:var(--muted)}
.clock>div{display:grid;gap:6px;min-width:0}
.clock .tag{justify-self:start}
.clock h3{font-size:18px;font-weight:800}
.clock p{font-size:14px;color:var(--muted)}
/* detail */
.cdetail{max-width:1120px;padding-block:32px 80px;display:grid;gap:0}
.cban.big{border-radius:22px 22px 0 0;overflow:hidden;border:1px solid var(--line);border-bottom:0}
.chead{border:1px solid var(--line);border-radius:0 0 22px 22px;margin-bottom:56px}
.chead h1{font-size:clamp(26px,3.4vw,38px);font-weight:900;line-height:1.25;text-wrap:balance}
.chead .lede{font-size:17px;font-weight:700;color:var(--accent-ink)}
.cdetail .gal{margin-bottom:56px}
.cdetail .gal h2,.cprose h2{font-size:26px;font-weight:900;letter-spacing:-.01em}
.galg{gap:14px}
.galg figure{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg);gap:0}
.galg img{border-radius:0;display:block}
.galg figcaption{padding:10px 12px;font-size:13px;font-weight:700;color:var(--ink)}
.gal .hint{font-size:12.5px;color:var(--muted)}
.cprose{max-width:820px}
.cprose table{width:100%}
.cfoot{margin-top:48px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;border-radius:22px;padding:24px 28px;background:var(--stage);color:#F4F6F8}
.cfoot b{font-size:18px}
.cfoot p{color:#98A3AE;font-size:14px}
@media (max-width:1000px){.cproc ol{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:760px){
  .cbody,.chead{grid-template-columns:1fr;padding:22px 20px}
  .cproc{padding:22px 20px}
  .cproc ol{grid-template-columns:repeat(2,minmax(0,1fr))}
  .clock{grid-template-columns:1fr;padding:22px 20px}
  .stats b{font-size:22px}
}
.cdetail .galg{grid-template-columns:repeat(3,minmax(0,1fr))}
.cdetail .galg.tall{grid-template-columns:repeat(7,minmax(0,1fr))}
@media (max-width:900px){.cdetail .galg.tall{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:600px){.cdetail .galg{grid-template-columns:repeat(2,minmax(0,1fr))}.cdetail .galg.tall{grid-template-columns:repeat(3,minmax(0,1fr))}}
/* channels */
.chs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0 20px}
.prose .chs a,.chs a{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--ink);background:var(--bg);transition:border-color .2s,transform .2s}
.chs a:hover{border-color:var(--ink);transform:translateY(-2px)}
.chs .ci{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:15px;font-weight:900;color:#fff;background:#14181D}
.chs .youtube .ci,.chs .youtube_en .ci{background:#FF0033}
.chs .instagram .ci{background:linear-gradient(135deg,#F9CE34,#EE2A7B 55%,#6228D7)}
.chs .threads .ci{background:#000}
.chs span:nth-child(2){display:grid;gap:1px;min-width:0}
.chs b{font-size:15px;font-weight:800}
.chs small{font-size:12.5px;color:var(--muted)}
.chs em{font-style:normal;font-family:var(--mono);font-size:12.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}
.chs .ar{color:var(--muted);font-weight:700}
.fl{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center}
.fch{display:flex;flex-wrap:wrap;gap:4px 14px}
.fch a{font-size:13px;color:var(--muted)}
.fch a:hover{color:var(--ink)}
@media (max-width:560px){.chs{grid-template-columns:1fr}}
/* contact mailbox v2 */
.mailbox{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;border:1px solid var(--line);border-radius:18px;padding:18px 20px;background:var(--bg);box-shadow:0 10px 30px -24px rgba(11,14,18,.5)}
.mailbox span{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);font-size:0}
.mailbox span::before{content:"✉";font-size:20px}
.prose .mailbox a,.mailbox a{font-size:19px;font-weight:800;color:var(--ink);text-decoration:none;word-break:break-all;min-width:0}
.mailbox .btn.line{background:var(--ink);color:var(--bg);box-shadow:none;padding:10px 16px;font-size:13.5px;font-weight:800;border-radius:10px}
.mailbox .btn.line:hover{filter:brightness(1.2)}
@media (max-width:560px){.mailbox{grid-template-columns:auto minmax(0,1fr)}.mailbox .btn{grid-column:1/-1;justify-content:center}}