:root{
  --ink-black:#14181f;
  --charcoal:#1c222b;
  --paper-cream:#f2e9d8;
  --paper-line:#d9c9a8;
  --paper-ink:#3b3226;
  --ember-orange:#e8783d;
  --ember-red:#b5432a;
  --moon-blue:#7c93a8;
  --dim-text:#8b93a0;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:
    radial-gradient(ellipse 900px 500px at 50% 8%, rgba(232,120,61,0.10), transparent 60%),
    radial-gradient(ellipse 1200px 800px at 50% 100%, rgba(0,0,0,0.4), transparent 70%),
    var(--ink-black);
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:'IBM Plex Sans KR', sans-serif;
  color:var(--dim-text);
  padding:40px 16px;
  overflow-x:hidden;
}
.scene{
  width:100%;
  max-width:520px;
  display:flex;
  flex-direction:column;
  align-items:center;
}
header{
  text-align:center;
  margin-bottom:28px;
}
h1{
  font-family:'Noto Serif KR', serif;
  font-weight:700;
  font-size:26px;
  color:#f2e9d8;
  margin:0 0 8px;
  letter-spacing:-0.01em;
}
.sub{
  font-size:14px;
  line-height:1.6;
  color:var(--dim-text);
  margin:0;
  max-width:360px;
}
.paper-wrap{
  position:relative;
  width:100%;
  max-width:400px;
  height:320px;
  margin:0 auto;
}
.burn-glow{
  position:absolute;
  inset:-34px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(232,120,61,0.4), rgba(232,120,61,0.12) 45%, transparent 72%);
  opacity:0;
  pointer-events:none;
  filter:blur(4px);
  z-index:0;
}
.paper{
  position:absolute;
  z-index:1;
  inset:0;
  background:
    repeating-linear-gradient(
      var(--paper-cream) 0px, var(--paper-cream) 29px,
      var(--paper-line) 29px, var(--paper-line) 30px
    );
  border-radius:3px;
  box-shadow:
    0 2px 0 rgba(255,255,255,0.4) inset,
    0 18px 40px rgba(0,0,0,0.45),
    0 2px 6px rgba(0,0,0,0.3);
  transform:rotate(-0.6deg);
  transform-origin:50% 50%;
  padding:28px 26px;
  will-change:transform, opacity, filter, border-radius;
}
.paper.shake{
  animation:shake 0.36s ease;
}
@keyframes shake{
  0%,100%{transform:rotate(-0.6deg) translateX(0);}
  25%{transform:rotate(-0.6deg) translateX(-6px);}
  75%{transform:rotate(-0.6deg) translateX(6px);}
}
textarea{
  width:100%;
  height:100%;
  border:none;
  outline:none;
  resize:none;
  background:transparent;
  font-family:'Gaegu', cursive;
  font-size:21px;
  line-height:30px;
  color:var(--paper-ink);
  caret-color:var(--ember-red);
}
textarea::placeholder{
  color:#a89877;
}
.burn-canvas{
  position:absolute;
  inset:0;
  pointer-events:none;
  display:none;
  z-index:2;
  transform:rotate(-0.6deg);
  border-radius:3px;
}
.ghost{
  position:absolute;
  inset:0;
  background:inherit;
}
.ember-dot{
  position:fixed;
  width:4px;
  height:4px;
  border-radius:50%;
  background:radial-gradient(circle, #ffd39b 0%, var(--ember-orange) 55%, transparent 80%);
  pointer-events:none;
  z-index:50;
}
.scrap{
  position:fixed;
  width:26px;
  height:26px;
  background:var(--paper-cream);
  border:1px solid var(--paper-line);
  pointer-events:none;
  z-index:40;
}
.actions{
  display:flex;
  gap:10px;
  margin-top:26px;
  flex-wrap:wrap;
  justify-content:center;
}
button.act{
  font-family:'IBM Plex Sans KR', sans-serif;
  font-size:14px;
  font-weight:500;
  color:#e7e2d6;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:8px;
  padding:11px 18px;
  cursor:pointer;
  transition:border-color 0.2s, background 0.2s, transform 0.1s;
}
button.act:hover:not(:disabled){
  border-color:var(--ember-orange);
  background:rgba(232,120,61,0.08);
}
button.act:active:not(:disabled){
  transform:scale(0.97);
}
button.act:disabled{
  opacity:0.35;
  cursor:default;
}
.hint{
  font-size:12.5px;
  color:var(--ember-orange);
  margin-top:14px;
  height:16px;
  opacity:0;
  transition:opacity 0.25s;
}
.hint.show{opacity:1;}
.aftermath{
  display:none;
  flex-direction:column;
  align-items:center;
  text-align:center;
  width:100%;
  max-width:400px;
  height:320px;
  justify-content:center;
  border:1px solid rgba(242,233,216,0.16);
  border-radius:10px;
  background:rgba(242,233,216,0.02);
  box-sizing:border-box;
  padding:32px;
}
.aftermath.show{display:flex;}
.aftermath p.msg{
  font-family:'Noto Serif KR', serif;
  font-size:19px;
  color:#f2e9d8;
  margin:0 0 8px;
}
.aftermath p.sub2{
  font-size:13.5px;
  color:var(--dim-text);
  margin:0 0 22px;
}
.reset-btn{
  font-family:'IBM Plex Sans KR', sans-serif;
  font-size:14px;
  color:var(--ink-black);
  background:var(--paper-cream);
  border:none;
  border-radius:8px;
  padding:12px 22px;
  cursor:pointer;
  font-weight:500;
}
.clear-btn{
  position:absolute;
  top:8px;
  right:8px;
  width:22px;
  height:22px;
  border:none;
  background:rgba(59,50,38,0.08);
  color:#7a6b52;
  border-radius:50%;
  font-size:12px;
  line-height:1;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background 0.15s, color 0.15s;
  z-index:3;
}
.clear-btn:hover{
  background:rgba(59,50,38,0.16);
  color:#3b3226;
}
.clear-btn:disabled{
  opacity:0.3;
  cursor:default;
}
@media (max-width:420px){
  .paper-wrap{height:300px;}
  h1{font-size:22px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important;}
}

.site-footer-note{
  margin-top:28px;
  padding-top:16px;
  border-top:1px solid rgba(217,201,168,0.14);
  font-size:11.5px;
  color:var(--dim-text);
  text-align:center;
  line-height:1.6;
  max-width:420px;
}
.site-footer-note .legal-links{
  margin-top:8px;
}
.site-footer-note .legal-links a{
  color:var(--dim-text);
  text-decoration:none;
}
.site-footer-note .legal-links a:hover{
  color:var(--ember-orange);
}

/* ---- SY Project 안내/FAQ 섹션 ---- */
.sy-info{ margin-top:24px; padding-top:20px; border-top:1px solid rgba(217,201,168,0.14); max-width:420px; text-align:left; }
.sy-info h2{ font-family:'Noto Serif KR', serif; font-size:16px; color:var(--paper-cream); margin-bottom:10px; }
.sy-info > p{ font-size:13px; line-height:1.75; color:var(--dim-text); margin-bottom:16px; }
.sy-faq details{ border-top:1px solid rgba(217,201,168,0.1); padding:12px 0; }
.sy-faq summary{ cursor:pointer; font-weight:600; font-size:13px; color:var(--paper-cream); list-style:none; }
.sy-faq summary::-webkit-details-marker{ display:none; }
.sy-faq summary::before{ content:'○ '; color:var(--ember-orange); }
.sy-faq details p{ margin-top:8px; font-size:12.5px; color:var(--dim-text); line-height:1.7; }