:root{
  --bg:#ece8e1; --fg:#151514; --muted:rgba(21,21,20,.5); --line:rgba(21,21,20,.13);
  --glass:rgba(250,248,244,.6); --glass-b:rgba(21,21,20,.07);
  --serif:'Instrument Serif',Georgia,serif; --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --sans:'Noto Sans KR',system-ui,-apple-system,sans-serif;
}
body.dark{
  --bg:#141413; --fg:#ecebe6; --muted:rgba(236,235,230,.48); --line:rgba(236,235,230,.13);
  --glass:rgba(28,28,26,.6); --glass-b:rgba(255,255,255,.07);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--fg);font-family:var(--sans);-webkit-font-smoothing:antialiased;transition:background .6s,color .6s}
canvas{position:fixed;inset:0;width:100vw;height:100vh;display:block;touch-action:none;cursor:none}
button{font:inherit;color:inherit}

.brand{position:fixed;top:24px;left:28px;pointer-events:none;transition:opacity 1s}
.mark{font-family:var(--serif);font-style:italic;font-size:36px;line-height:1;letter-spacing:-.01em}
.sub{font-size:12px;font-weight:300;letter-spacing:.02em;color:var(--muted);margin-top:8px}

.tools{position:fixed;top:22px;right:22px;display:flex;gap:8px;z-index:12}
.tools button{height:38px;min-width:38px;border-radius:999px;border:1px solid var(--line);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:grid;place-items:center;cursor:pointer;
  transition:transform .2s,background .2s,opacity 1s}
.tools button:hover{transform:scale(1.06)}
.tools svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.tools .off .on-i,.tools :not(.off)>.off-i{display:none}
#bLang{display:flex !important;align-items:center;padding:0 13px;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;white-space:nowrap}
#bLang b{font-weight:500} #bLang i{font-style:normal;opacity:.35;margin:0 5px}
#bLang span{opacity:.38;transition:opacity .2s} #bLang span.cur{opacity:1}

/* 액체 디자인 고르기 */
#designs{position:fixed;top:22px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:4px;padding:4px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-b);backdrop-filter:blur(18px) saturate(1.15);-webkit-backdrop-filter:blur(18px) saturate(1.15);
  box-shadow:0 10px 40px -20px rgba(0,0,0,.35);transition:opacity 1s;z-index:11;max-width:calc(100vw - 32px)}
#designs .sws{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
#designs .sws::-webkit-scrollbar{display:none}
.sw{flex:none;width:30px;height:30px;border-radius:50%;border:0;padding:0;cursor:pointer;display:grid;place-items:center;position:relative;
  background:var(--c);box-shadow:inset 0 0 0 1px rgba(127,127,127,.28);transition:transform .2s}
.sw:hover{transform:scale(1.1)}
.sw svg{width:17px;height:17px}
.sw.on::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:1.5px solid var(--fg)}
#dName{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;padding:0 12px 0 10px;white-space:nowrap;min-width:84px}

/* 사용법 카드 — 항상 보임 */
#guide{position:fixed;left:24px;top:96px;width:300px;padding:14px 14px 12px;border-radius:18px;background:var(--glass);border:1px solid var(--glass-b);
  backdrop-filter:blur(18px) saturate(1.15);-webkit-backdrop-filter:blur(18px) saturate(1.15);box-shadow:0 18px 50px -26px rgba(0,0,0,.45);
  transition:opacity .8s, transform .8s}
.g-head{display:flex;justify-content:space-between;align-items:center;margin:0 2px 10px}
.g-head span,.g-head em{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--muted);font-style:normal}
.g-head em{margin-left:auto}
#gMin{display:none;margin-left:8px;width:24px;height:24px;border-radius:50%;border:0;background:none;cursor:pointer;color:var(--muted);place-items:center}
#gMin:hover{background:var(--line);color:var(--fg)}
#gMin svg{width:11px;height:11px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
#guide.can-min #gMin{display:grid}
#guide ol{list-style:none;margin:0;padding:0;display:grid;gap:9px}
#guide li{display:grid;grid-template-columns:30px 1fr;gap:11px;align-items:center;transition:opacity .5s}
#guide .ico{width:30px;height:30px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;transition:background .35s,color .35s,border-color .35s}
#guide .ico svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}
#guide .ico .chk{display:none}
#guide li b{display:block;font-size:13px;font-weight:500;line-height:1.35}
#guide li span{display:block;font-size:11.5px;color:var(--muted);font-weight:300;line-height:1.5}
#guide li.done .ico{background:var(--fg);color:var(--bg);border-color:var(--fg)}
#guide li.done .ico svg{display:none} #guide li.done .ico .chk{display:block}
#guide li.done b{opacity:.55}
.g-keys{margin-top:12px;padding:10px 2px 0;border-top:1px solid var(--line);font-size:11px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font-weight:300}
kbd{display:inline-block;font-family:var(--mono);font-size:9.5px;letter-spacing:.04em;border:1px solid var(--line);border-radius:5px;padding:1px 6px;margin-right:5px;color:var(--fg)}
body.touch .g-keys{display:none}
#guide.tucked{pointer-events:none}
/* 다 해보면 좌측 하단으로 쏙 — 작은 버튼으로 남아요 */
#gMini{position:fixed;left:22px;bottom:22px;width:38px;height:38px;border-radius:50%;border:1px solid var(--glass-b);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:grid;place-items:center;cursor:pointer;z-index:6;
  transform:scale(0);transition:transform .5s cubic-bezier(.34,1.9,.5,1);box-shadow:0 8px 24px -12px rgba(0,0,0,.4)}
#gMini.show{transform:scale(1)}
#gMini:hover{transform:scale(1.1)}
#gMini svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.4;stroke-linecap:round}
#gMini i{position:absolute;right:-2px;top:-2px;width:14px;height:14px;border-radius:50%;background:var(--fg);color:var(--bg);display:grid;place-items:center}
#gMini i svg{width:9px;height:9px;stroke-width:2.4}

#dock{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);display:flex;align-items:flex-start;gap:6px;padding:5px;border-radius:24px;
  background:var(--glass);border:1px solid var(--glass-b);backdrop-filter:blur(18px) saturate(1.15);-webkit-backdrop-filter:blur(18px) saturate(1.15);
  width:max-content;max-width:min(900px, calc(100vw - 32px));transition:opacity 1s, transform 1s;box-shadow:0 10px 40px -18px rgba(0,0,0,.35)}
#dock .chips{display:flex;flex-wrap:wrap;gap:2px;min-width:0}
#dock .chips::-webkit-scrollbar{display:none}
.seg{flex:none;display:flex;gap:2px;padding:3px;margin-right:4px;border-radius:999px;background:var(--line)}
.seg button{border:0;background:none;font-size:11.5px;font-weight:500;padding:6px 11px;border-radius:999px;cursor:pointer;color:var(--muted);white-space:nowrap;transition:background .25s,color .25s}
.seg button.on{background:var(--fg);color:var(--bg)}
.chip.hide{display:none}
.dock-label{font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;color:var(--muted);padding:0 10px 0 14px;white-space:nowrap}
.chip{flex:none;position:relative;overflow:hidden;border:0;background:transparent;font-size:13px;font-weight:400;padding:9px 15px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:background .25s,color .25s}
.chip:hover{background:var(--line)}
.chip.on{background:var(--fg);color:var(--bg)}
.chip .bar{position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--bg);opacity:.55}

.credit{font-family:var(--mono);font-size:9.5px;letter-spacing:.34em;color:var(--muted)}
body > .credit{position:fixed;right:26px;bottom:32px;pointer-events:none;transition:opacity 1s}

#keys .kl{position:fixed;left:0;top:0;font-size:12px;font-weight:400;color:var(--muted);pointer-events:none;white-space:nowrap;text-align:center;
  transition:color .25s, opacity .5s;will-change:transform}
#keys .kl i{display:block;font-style:normal;font-family:var(--mono);font-size:8.5px;letter-spacing:.1em;opacity:.6;margin-top:2px}
#keys .kl.hit{color:var(--fg)}

#cursor{position:fixed;left:0;top:0;pointer-events:none;z-index:5;will-change:transform;transition:opacity .6s}
#cursor .ring{position:absolute;left:0;top:0;width:var(--s,14px);height:var(--s,14px);border:1px solid var(--fg);border-radius:50%;
  transform:translate(-50%,-50%);transition:width .22s cubic-bezier(.2,.8,.2,1),height .22s cubic-bezier(.2,.8,.2,1);opacity:.55}
#cursor .dot{position:absolute;left:0;top:0;width:3px;height:3px;border-radius:50%;background:var(--fg);transform:translate(-50%,-50%)}
#cursor .lab{position:absolute;left:16px;top:12px;font-size:11px;letter-spacing:.02em;color:var(--fg);white-space:nowrap;opacity:0;transition:opacity .2s}
#cursor.touch{display:none}

#toast{position:fixed;left:50%;bottom:88px;transform:translate(-50%,8px);font-size:12.5px;color:var(--muted);opacity:0;transition:opacity .6s,transform .6s;pointer-events:none;white-space:nowrap;font-weight:300}
#toast.show{opacity:1;transform:translate(-50%,0)}

#intro{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding-bottom:10vh;text-align:center;
  transition:opacity 1.1s ease;z-index:10;pointer-events:none}
#intro > *{pointer-events:auto}
#intro .big{font-family:var(--serif);font-style:italic;font-size:clamp(64px,11vw,132px);line-height:.9;letter-spacing:-.02em}
#intro p{margin:18px 0 34px;font-weight:300;font-size:15px;color:var(--muted);letter-spacing:.02em}
.choices{display:flex;gap:10px}
.choices button{min-width:118px;border:1px solid var(--fg);border-radius:999px;padding:12px 24px;font-size:14px;cursor:pointer;
  transition:background .3s,color .3s,transform .2s,opacity .3s,border-color .3s}
.choices button:active{transform:scale(.97)}
#yes{background:var(--fg);color:var(--bg)}
#yes:hover{opacity:.86}
#no{background:transparent;border-color:var(--line)}
#no:hover{border-color:var(--fg)}
#intro .hint{margin-top:16px;font-size:11.5px;font-weight:300;color:var(--muted);min-height:1.5em}
#intro .credit{margin-top:5vh}
body.intro #gMini{display:none}
body.intro .brand, body.intro #dock, body.intro #guide, body.intro > .credit, body.intro #cursor, body.intro #designs,
body.intro .tools button:not(#bLang){opacity:0;pointer-events:none}
body.intro #dock{transform:translate(-50%,20px)}
body.intro #guide{transform:translateY(-8px)}
.gone{opacity:0;pointer-events:none}

@media (max-width:1100px){ body > .credit{display:none} }
@media (max-width:980px) and (min-width:701px){ #dName{display:none} }
@media (max-width:700px){
  .brand{top:18px;left:18px}.mark{font-size:30px}.sub{display:none}
  .tools{top:16px;right:14px;gap:6px}.tools button{height:34px;min-width:34px}
  #designs{top:64px;left:12px;right:12px;transform:none;max-width:none}
  #dName{display:none}
  #guide{left:12px;right:12px;top:auto;bottom:74px;width:auto;padding:11px 12px}
  #guide li span{display:none}
  #guide ol{grid-template-columns:1fr 1fr;gap:7px 10px}
  #guide li{grid-template-columns:26px 1fr;gap:8px}
  #guide .ico{width:26px;height:26px}
  #guide li b{font-size:11.5px}
  .g-head{margin-bottom:8px}
  #dock{bottom:16px;border-radius:999px;width:auto;left:12px;right:12px;transform:none;max-width:none}
  body.intro #dock{transform:translateY(20px)}
  #dock .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-right:18px;
    -webkit-mask-image:linear-gradient(90deg,#000 82%,transparent);mask-image:linear-gradient(90deg,#000 82%,transparent)}
  #dock .chips.end{-webkit-mask-image:none;mask-image:none}
  .dock-label{display:none}
  #toast{bottom:auto;top:110px}
  #gMini{bottom:76px;left:14px}
}