/* ===========================================================================
   『Let's KOREA TIME』 — 스타일
   설계 원칙
     · 어두운 밤의 극장 같은 화면 + 종이(사료)의 따뜻한 대비
     · 중학생이 읽기 편한 큰 본문(17px 이상)과 넉넉한 줄간격
     · 휴대폰(360px)부터 교실 TV(1920px)까지 한 화면에서 동작
     · 색만으로 뜻을 전하지 않는다(정답/오답에 글자와 아이콘을 함께 쓴다)
   =========================================================================== */

:root{
  --ink:#f2efe6;
  --ink-dim:#b9b7ae;
  --ink-mute:#8d8b84;
  --paper:#f6efdf;
  --paper-ink:#2a2519;
  --gold:#e8c37a;
  --gold-soft:#f5dfae;
  --jade:#7fd2c1;
  --coral:#ef8a72;
  --sky:#8fd0ff;
  --panel:rgba(10,14,28,.72);
  --panel-line:rgba(255,255,255,.10);
  --radius:18px;
  --shadow:0 22px 60px rgba(0,0,0,.45);
  --font: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
          'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', system-ui, sans-serif;
  --serif: 'Nanum Myeongjo', 'Apple SD Gothic Neo', serif;
}

*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;height:100%;}
body{
  font-family:var(--font);
  color:var(--ink);
  background:#05070f;
  min-height:100dvh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.modal-open{overflow:hidden;}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ── 배경 ────────────────────────────────────────────────────────────── */
#backdrop{position:fixed;inset:0;z-index:0;}
#backdrop .scene-svg{width:100%;height:100%;display:block;animation:sceneReveal 1.1s ease-out both;}
@keyframes sceneReveal{from{opacity:.32;transform:scale(1.025)}to{opacity:1;transform:scale(1)}}
#backdrop::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,6,14,.16),rgba(4,6,14,.58));
}
#backdrop.title-film-backdrop::after{
  background:
    linear-gradient(90deg,rgba(3,7,17,.86) 0%,rgba(3,7,17,.62) 42%,rgba(3,7,17,.22) 76%,rgba(3,7,17,.38)),
    linear-gradient(0deg,rgba(3,7,17,.74),transparent 50%,rgba(3,7,17,.18));
}
#backdrop.mission-film-backdrop::after{
  background:
    linear-gradient(90deg,rgba(3,7,17,.84) 0%,rgba(3,7,17,.57) 43%,rgba(3,7,17,.22) 78%,rgba(3,7,17,.48)),
    linear-gradient(0deg,rgba(3,7,17,.76),transparent 52%,rgba(3,7,17,.18));
}
.mission-film{position:absolute;inset:0;overflow:hidden;background:#07101d;}
.mission-film img{
  width:100%;height:100%;object-fit:cover;object-position:60% center;display:block;
  animation:sceneReveal 1.1s ease-out both;filter:saturate(.82) contrast(1.06);
}
.title-film{position:absolute;inset:0;overflow:hidden;background:#07101d;}
.title-film img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% center;
  opacity:0;animation:titleFilm 18s ease-in-out infinite both;filter:saturate(.84) contrast(1.06);
}
.title-film img:nth-child(1){animation-delay:0s;}
.title-film img:nth-child(2){animation-delay:-6s;object-position:62% center;}
.title-film img:nth-child(3){animation-delay:-12s;object-position:64% center;}
@keyframes titleFilm{
  0%,27%{opacity:1;transform:scale(1.015)}
  33%,94%{opacity:0;transform:scale(1.05)}
  100%{opacity:1;transform:scale(1.015)}
}
#grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;
  background-image:radial-gradient(circle at 1px 1px, #fff 1px, transparent 0);
  background-size:3px 3px;
}

/* ── 무대 ────────────────────────────────────────────────────────────── */
#stage{
  position:relative;z-index:2;
  max-width:820px;margin:0 auto;
  padding:clamp(16px,3.5vw,40px) clamp(14px,4vw,28px) 80px;
  min-height:100dvh;
}
@media (min-width:1100px){ #stage{ margin-left:max(24px, calc(50% - 640px)); } }
.title-screen{min-height:calc(100dvh - clamp(32px,7vw,80px));display:grid;align-items:center;}

.panel{
  background:var(--panel);
  border:1px solid var(--panel-line);
  border-radius:var(--radius);
  padding:clamp(18px,3.2vw,32px);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  animation:rise .45s cubic-bezier(.2,.7,.3,1) both;
}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .panel{animation:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

h1,h2,h3{line-height:1.3;margin:0 0 .5em;}
p{line-height:1.78;margin:0 0 .9em;font-size:clamp(15.5px,2.2vw,17px);}
hr{border:0;border-top:1px solid var(--panel-line);margin:18px 0;}
.muted{color:var(--ink-dim);}
.small{font-size:14px;}
code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px;font-size:.92em;}

/* ── 시작 화면 ───────────────────────────────────────────────────────── */
.title-panel{
  position:relative;text-align:center;overflow:visible;max-width:700px;
  background:
    linear-gradient(145deg,rgba(5,10,23,.93),rgba(12,20,39,.79) 54%,rgba(48,31,21,.73)),
    radial-gradient(circle at 50% 0,rgba(232,195,122,.17),transparent 54%);
  border-color:rgba(232,195,122,.24);
  box-shadow:0 28px 90px rgba(0,0,0,.62),inset 0 1px rgba(255,240,202,.08);
  backdrop-filter:none;-webkit-backdrop-filter:none;
}
.title-panel::before,.title-panel::after{
  content:'';position:absolute;pointer-events:none;z-index:-1;
}
.title-panel::before{
  inset:-1px;border-radius:inherit;
  background:linear-gradient(110deg,transparent 10%,rgba(255,226,161,.12) 42%,transparent 70%);
  animation:titleSweep 8s ease-in-out infinite;
}
.title-panel::after{
  left:8%;right:8%;bottom:-18px;height:32px;
  background:radial-gradient(ellipse,rgba(232,195,122,.24),transparent 70%);filter:blur(12px);
}
@keyframes titleSweep{0%,68%,100%{opacity:.15;transform:translateX(-8%)}78%{opacity:.65;transform:translateX(8%)}}
.cinema-kicker{
  margin:-6px 0 11px;color:rgba(255,226,174,.55);font-size:10px;font-weight:700;
  letter-spacing:.24em;text-transform:uppercase;
}
.title-mark{
  display:inline-block;font-size:12.5px;letter-spacing:.28em;
  color:var(--gold);border:1px solid rgba(232,195,122,.4);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.game-title{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;}
.gt-main{
  font-family:var(--serif);
  font-size:clamp(26px,6.2vw,46px);font-weight:800;letter-spacing:-.01em;
  background:linear-gradient(180deg,#fff 10%,var(--gold) 130%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.gt-sub{font-size:clamp(14px,2.8vw,19px);color:var(--gold-soft);font-weight:600;}
.title-lead{max-width:52ch;margin:0 auto 22px;color:var(--ink-dim);word-break:keep-all;overflow-wrap:normal;}
.title-lead .lead-line{display:block;}
.title-illustration-note{max-width:50ch;margin:-13px auto 19px;color:rgba(235,225,198,.58);font-size:12px;line-height:1.55;}
.cinema-line{display:flex;align-items:center;gap:12px;max-width:430px;margin:-8px auto 20px;color:var(--gold);font-family:var(--serif);font-size:13px;letter-spacing:.16em;}
.cinema-line i{height:1px;flex:1;background:linear-gradient(90deg,transparent,rgba(232,195,122,.65));}
.cinema-line i:last-child{transform:scaleX(-1);}

.title-facts{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:10px;margin:0 0 22px;
}
.fact{
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:12px;padding:11px 12px;text-align:left;
}
.fact-k{display:block;font-size:12px;color:var(--ink-mute);margin-bottom:3px;}
.fact-v{font-size:15px;color:var(--gold-soft);}

.who-now{
  display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center;
  background:rgba(127,210,193,.12);border:1px solid rgba(127,210,193,.32);
  padding:8px 14px;border-radius:999px;margin-bottom:18px;font-size:14.5px;
}
.tier-pill{background:rgba(255,255,255,.12);padding:2px 9px;border-radius:999px;font-size:12.5px;}

.title-actions{display:flex;flex-direction:column;gap:10px;align-items:center;margin-bottom:18px;}
.demo-start{border-color:rgba(127,210,193,.45);color:var(--jade);}
.demo-start:hover{border-color:var(--jade);background:rgba(127,210,193,.12);}
.title-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:8px;}

.maker{
  margin-top:30px;padding-top:16px;border-top:1px solid rgba(255,255,255,.07);
  font-size:12.5px;color:rgba(255,255,255,.32);letter-spacing:.02em;text-align:center;
}

.qr-entry{position:fixed;right:18px;bottom:18px;z-index:25;}
.qr-launch{
  display:flex;align-items:center;gap:10px;padding:9px 12px 9px 9px;cursor:pointer;
  color:var(--ink);background:rgba(6,10,21,.9);border:1px solid rgba(232,195,122,.36);
  border-radius:14px;box-shadow:0 14px 38px rgba(0,0,0,.5);backdrop-filter:blur(12px);
  font:inherit;text-align:left;transition:transform .15s ease,border-color .2s ease,background .2s ease;
}
.qr-launch:hover{transform:translateY(-2px);background:rgba(20,27,46,.96);border-color:var(--gold);}
.qr-launch b,.qr-launch small{display:block;white-space:nowrap;}
.qr-launch b{font-size:13px;color:var(--gold-soft);}
.qr-launch small{font-size:10.5px;color:var(--ink-mute);margin-top:2px;}
.qr-corner-icon{width:52px;height:52px;padding:3px;background:#fff;border-radius:7px;display:block;}
.qr-svg{display:block;width:100%;height:auto;background:#fff;}
.qr-modal{text-align:center;max-width:430px;margin:0 auto;}
.qr-large{width:min(310px,82vw);margin:0 auto 18px;padding:10px;background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(0,0,0,.32);}
.qr-guide{color:var(--paper-ink);font-weight:700;line-height:1.6;}
.qr-url{display:block;max-width:100%;overflow-wrap:anywhere;background:#e9dfca;color:#3d321f;padding:10px;border-radius:8px;margin:0 0 12px;}

@media (max-width:1099px){
  .title-screen{min-height:calc(100dvh - 56px);align-items:center;}
  .qr-entry{position:static;margin:22px auto 0;display:flex;justify-content:center;}
  .qr-launch{width:min(310px,100%);justify-content:center;}
}
@media (max-width:760px){
  #stage{max-width:640px;padding:16px 16px 34px;}
  .title-screen{min-height:auto;display:block;}
  .title-panel{padding:clamp(20px,5vw,30px);}
  .title-facts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .title-facts .fact{min-width:0;}
  .fact-v{font-size:14px;overflow-wrap:anywhere;}
  .title-actions .btn{width:min(100%,360px);}
}
@media (max-width:520px){
  #stage{padding:10px 16px 28px;}
  .title-panel{padding:20px 18px 22px;}
  .cinema-kicker{font-size:8.5px;letter-spacing:.16em;}
  .title-mark{margin-bottom:14px;}
  .gt-main{font-size:clamp(25px,8.2vw,34px);}
  .gt-sub{font-size:14px;}
  .title-lead{font-size:15px;line-height:1.7;margin-bottom:18px;}
  .title-illustration-note{font-size:10.5px;margin:-10px 4px 16px;}
  .cinema-line{gap:8px;font-size:11px;letter-spacing:.1em;}
  .title-facts{gap:8px;margin-bottom:17px;}
  .fact{padding:9px 10px;}
  .fact-k{font-size:10.5px;}
  .fact-v{font-size:13px;line-height:1.35;}
  .title-actions{gap:8px;margin-bottom:14px;}
  .title-links{gap:12px;margin-top:4px;}
  .maker{margin-top:20px;padding-top:13px;}
  .qr-entry{position:fixed;right:10px;top:10px;bottom:auto;margin:0;display:block;}
  .qr-launch{width:auto;padding:6px;border-radius:12px;}
  .qr-launch>span:last-child{display:none;}
  .qr-corner-icon{width:48px;height:48px;}
}
@media (prefers-reduced-motion:reduce){
  .title-film img{animation:none;opacity:0;transform:none;}
  .title-film img:first-child{opacity:1;}
}

/* ── 버튼 ────────────────────────────────────────────────────────────── */
.btn{
  font:inherit;font-weight:700;font-size:15.5px;cursor:pointer;
  border-radius:12px;padding:13px 22px;border:1px solid transparent;
  background:rgba(255,255,255,.09);color:var(--ink);
  transition:transform .12s ease, background .18s ease, border-color .18s ease;
  min-height:46px;
}
.btn:hover{background:rgba(255,255,255,.15);}
.btn:active{transform:translateY(1px);}
.btn.primary{
  background:linear-gradient(180deg,var(--gold-soft),var(--gold));
  color:#2a1d05;border-color:rgba(255,255,255,.3);
  box-shadow:0 8px 24px rgba(232,195,122,.22);
}
.btn.primary:hover{filter:brightness(1.06);background:linear-gradient(180deg,#fff0d2,var(--gold));}
.btn.primary.danger{background:linear-gradient(180deg,#f6b3a2,var(--coral));color:#3a1109;}
.btn.ghost{background:transparent;border-color:var(--panel-line);color:var(--ink-dim);}
.btn.ghost:hover{background:rgba(255,255,255,.07);color:var(--ink);}
.btn.ghost.dim{opacity:.6;}
.btn.big{font-size:17px;padding:15px 30px;min-width:min(300px,100%);}
.btn.small{font-size:13.5px;padding:8px 14px;min-height:36px;}
.linkish{
  background:none;border:0;color:var(--sky);font:inherit;font-size:14px;
  cursor:pointer;text-decoration:underline;text-underline-offset:3px;padding:6px 2px;
}
.icon-btn{
  background:none;border:0;color:var(--ink-dim);font-size:19px;cursor:pointer;
  width:38px;height:38px;border-radius:10px;
}
.icon-btn:hover{background:rgba(255,255,255,.1);color:var(--ink);}
button.mini{
  font:inherit;font-size:12.5px;cursor:pointer;background:rgba(255,255,255,.1);
  border:1px solid var(--panel-line);color:var(--ink-dim);
  border-radius:8px;padding:5px 9px;margin:2px;min-height:30px;
}
button.mini:hover:not(:disabled){background:rgba(255,255,255,.18);color:var(--ink);}
button.mini:disabled{opacity:.3;cursor:not-allowed;}
button.mini.danger{color:var(--coral);border-color:rgba(239,138,114,.35);}

:focus-visible{outline:3px solid var(--sky);outline-offset:2px;border-radius:6px;}

.row-end{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:22px;}
.row-between{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:20px;}
.row-gap{display:flex;gap:10px;flex-wrap:wrap;}
.row-gap.center{justify-content:center;margin-top:24px;}

/* ── 상태창(오른쪽 위) ───────────────────────────────────────────────── */
#hud{
  position:fixed;top:14px;right:14px;z-index:40;width:276px;
  background:rgba(8,11,22,.86);border:1px solid rgba(232,195,122,.26);
  border-radius:16px;padding:14px 15px;
  box-shadow:0 16px 44px rgba(0,0,0,.5);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:13.5px;
}
.hud-top{display:flex;align-items:center;gap:7px;margin-bottom:8px;flex-wrap:wrap;}
.hud-badge{background:var(--gold);color:#2a1d05;font-weight:800;font-size:11.5px;padding:3px 9px;border-radius:999px;}
.hud-tier{font-size:11px;color:var(--ink-mute);border:1px solid var(--panel-line);padding:2px 7px;border-radius:999px;}
.hud-time{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--jade);font-weight:700;}
.hud-title{font-size:16px;margin:0 0 3px;color:var(--gold-soft);font-family:var(--serif);}
.hud-where{font-size:12px;color:var(--ink-mute);margin-bottom:9px;}
.hud-goal{
  background:rgba(255,255,255,.06);border-left:3px solid var(--gold);
  padding:8px 10px;border-radius:0 8px 8px 0;margin-bottom:9px;line-height:1.55;
}
.hud-goal-label{display:block;font-size:10.5px;letter-spacing:.14em;color:var(--gold);margin-bottom:3px;}
.hud-row{display:flex;justify-content:space-between;margin-bottom:7px;font-size:12.5px;}
.hud-k{color:var(--ink-mute);}
.hud-v{color:var(--ink);}
.hud-bar{height:6px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden;}
.hud-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--jade),var(--gold));transition:width .5s ease;}
.hud-pct{font-size:11.5px;color:var(--ink-mute);margin:5px 0 9px;}
.hud-shards{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:10px;}
.shard{
  width:23px;height:27px;display:grid;place-items:center;border-radius:7px;
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  color:rgba(255,255,255,.2);font-family:var(--serif);font-size:15px;
}
.shard.on{background:rgba(232,195,122,.18);border-color:var(--gold);color:var(--gold-soft);}
.hud-acts{display:flex;flex-direction:column;gap:5px;}
.hud-btn{
  font:inherit;font-size:12.5px;cursor:pointer;text-align:left;
  background:rgba(255,255,255,.06);border:1px solid var(--panel-line);
  color:var(--ink-dim);border-radius:8px;padding:7px 10px;min-height:32px;
}
.hud-btn:hover{background:rgba(255,255,255,.13);color:var(--ink);}

@media (max-width:1099px){
  #hud{
    position:sticky;top:8px;right:auto;width:auto;margin:0 auto 14px;
    max-width:820px;z-index:30;
  }
  #stage{padding-top:10px;}
}

/* ── 브리핑 ──────────────────────────────────────────────────────────── */
.brief-no{font-size:12px;letter-spacing:.24em;color:var(--gold);margin-bottom:8px;}
.brief-title{font-family:var(--serif);font-size:clamp(24px,5vw,36px);}
.brief-meta{display:flex;align-items:center;gap:10px;color:var(--ink-mute);font-size:14px;margin-bottom:20px;flex-wrap:wrap;}
.brief-meta .dot{width:4px;height:4px;border-radius:50%;background:currentColor;}
.brief-body p{color:var(--ink-dim);}
.brief-goal{
  background:rgba(232,195,122,.10);border:1px solid rgba(232,195,122,.28);
  border-radius:12px;padding:13px 15px;margin-top:16px;line-height:1.7;
}
.brief-goal b{color:var(--gold);}
.cinematic-materials{margin-top:16px;}
.cinematic-disclaimer{
  margin:0;padding:10px 12px;border-left:3px solid rgba(143,208,255,.72);
  background:rgba(143,208,255,.09);color:var(--ink-dim);font-size:13px;line-height:1.65;
}
.historical-material-list{margin-top:12px;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;}
.historical-material-heading{grid-column:1/-1;font-size:12px;letter-spacing:.16em;color:var(--gold);font-weight:800;}
.historical-material{
  display:grid;grid-template-columns:76px 1fr;gap:10px;align-items:center;padding:8px;
  color:var(--ink);text-decoration:none;border:1px solid rgba(255,255,255,.14);border-radius:12px;
  background:rgba(4,7,14,.42);transition:border-color .18s ease,transform .18s ease;
}
.historical-material:hover,.historical-material:focus-visible{border-color:var(--gold);transform:translateY(-1px);outline:none;}
.historical-material img{width:76px;height:60px;object-fit:cover;border-radius:8px;background:#111;}
.historical-material-copy{display:grid;gap:4px;min-width:0;}
.historical-material-copy b{font-size:14px;color:var(--gold-soft);}
.historical-material-copy small{font-size:11px;line-height:1.45;color:var(--ink-dim);}
.page-title{font-family:var(--serif);font-size:clamp(22px,4.4vw,32px);}

/* ── 대화 ────────────────────────────────────────────────────────────── */
.talk-step{font-size:12px;letter-spacing:.2em;color:var(--ink-mute);margin-bottom:14px;}
.speaker{display:flex;gap:14px;align-items:center;margin-bottom:16px;}
.portrait{width:66px;height:66px;flex:0 0 66px;border-radius:14px;overflow:hidden;box-shadow:0 8px 22px rgba(0,0,0,.4);}
.portrait-film{border:1px solid rgba(232,195,122,.5);}
.portrait-film img{width:100%;height:100%;object-fit:cover;object-position:center top;display:block;}
.portrait-svg{width:100%;height:100%;display:block;}
.who-name{font-size:19px;font-weight:800;color:var(--gold-soft);font-family:var(--serif);}
.who-role{font-size:13px;color:var(--ink-mute);margin-top:2px;line-height:1.45;}
.who-visual-note{font-size:10px;color:var(--sky);letter-spacing:.06em;margin-top:4px;}
.lines{margin-bottom:6px;}
.line{
  position:relative;padding-left:16px;color:var(--ink);
  border-left:2px solid rgba(232,195,122,.3);margin-bottom:12px;
}

/* ── 사료 상자 ───────────────────────────────────────────────────────── */
.source{
  background:var(--paper);color:var(--paper-ink);
  border-radius:14px;padding:16px 18px;margin:16px 0;
  box-shadow:0 10px 30px rgba(0,0,0,.34);
  border:1px solid rgba(0,0,0,.08);
}
.source-title{font-weight:800;font-size:15.5px;margin-bottom:12px;display:flex;gap:8px;align-items:baseline;flex-wrap:wrap;}
.tag-src{
  background:#8a3b2c;color:#fff;font-size:11px;font-weight:800;
  padding:2px 8px;border-radius:999px;letter-spacing:.06em;flex:0 0 auto;
}
.source-label{
  font-size:11px;letter-spacing:.16em;color:#8a7a55;font-weight:700;margin-bottom:4px;
}
.source p{margin:0 0 12px;font-size:15px;line-height:1.8;color:var(--paper-ink);}
.source .hanja{
  font-family:var(--serif);font-size:15.5px;line-height:2;letter-spacing:.04em;
  background:rgba(0,0,0,.045);padding:10px 12px;border-radius:8px;
  border-left:3px solid #b08b46;
}
.source-easy{background:rgba(122,150,90,.13);border-radius:9px;padding:11px 13px;margin-top:4px;}
.source-easy p{margin:0;}
.source-note{margin-top:10px;font-size:14px;}
.source-note summary{cursor:pointer;color:#7a5c2a;font-weight:700;padding:4px 0;}
.source-note ul{margin:8px 0 0;padding-left:20px;}
.source-note li{margin-bottom:6px;line-height:1.65;}
.source-note b{color:#5c4415;}
.source-apa{
  display:block;margin-top:12px;padding-top:10px;border-top:1px dashed rgba(0,0,0,.18);
  font-size:12.5px;line-height:1.65;color:#5f5847;font-style:normal;
}
.source-apa::before{content:'출처 · ';font-weight:700;color:#8a7a55;}

/* ── 화면별 낱말 도움 ───────────────────────────────────────────────── */
.term-guide{
  margin:14px 0;border:1px solid rgba(143,208,255,.28);border-radius:12px;
  background:rgba(143,208,255,.07);overflow:hidden;
}
.term-guide summary{
  cursor:pointer;padding:11px 13px;color:var(--sky);font-size:14px;font-weight:800;
}
.term-guide[open] summary{border-bottom:1px solid rgba(143,208,255,.18);}
.term-guide-lead{font-size:13px;color:var(--ink-mute);margin:11px 13px 5px;}
.term-guide ul{margin:7px 13px 13px;padding-left:19px;}
.term-guide li{margin:7px 0;line-height:1.65;font-size:14px;color:var(--ink-dim);}
.term-guide b{color:var(--sky);}

/* ── 단서 획득 ───────────────────────────────────────────────────────── */
.clue-get{
  background:rgba(127,210,193,.12);border:1px solid rgba(127,210,193,.32);
  border-radius:12px;padding:13px 15px;margin-top:16px;
}
.clue-badge{
  display:inline-block;background:var(--jade);color:#062521;font-size:11px;font-weight:800;
  padding:2px 9px;border-radius:999px;margin-bottom:7px;letter-spacing:.06em;
}
.clue-get b{display:block;margin-bottom:5px;color:var(--jade);font-size:15.5px;}
.clue-get p{margin:0;font-size:14.5px;color:var(--ink-dim);line-height:1.7;}

/* ── 퍼즐 ────────────────────────────────────────────────────────────── */
.lock-head{display:flex;align-items:center;gap:9px;margin-bottom:16px;flex-wrap:wrap;}
.lock-ico{font-size:19px;}
.lock-name{font-weight:800;color:var(--gold-soft);font-size:16.5px;font-family:var(--serif);}
.lock-count{margin-left:auto;font-size:12.5px;color:var(--ink-mute);}
.puzzle-prompt{
  font-size:clamp(16px,2.6vw,18px);line-height:1.8;
  background:rgba(255,255,255,.05);border-left:3px solid var(--gold);
  padding:14px 16px;border-radius:0 10px 10px 0;margin-bottom:18px;
}

.options{display:flex;flex-direction:column;gap:9px;}
.opt{
  display:flex;gap:11px;align-items:flex-start;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:12px;padding:13px 15px;transition:background .16s,border-color .16s;
}
.opt:hover{background:rgba(255,255,255,.1);border-color:rgba(232,195,122,.4);}
.opt input{margin-top:4px;width:19px;height:19px;flex:0 0 auto;accent-color:#e8c37a;}
.opt:has(input:checked){background:rgba(232,195,122,.14);border-color:var(--gold);}
.opt-mark{color:var(--gold);font-weight:700;flex:0 0 auto;}
.opt-text{line-height:1.7;font-size:15.5px;}

.order-wrap{margin-bottom:4px;}
.order-help{font-size:13.5px;color:var(--ink-mute);margin-bottom:10px;}
.order-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;}
.order-item{
  display:flex;gap:11px;align-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:12px;padding:11px 13px;
}
.order-num{
  flex:0 0 27px;width:27px;height:27px;display:grid;place-items:center;
  background:var(--gold);color:#2a1d05;border-radius:8px;font-weight:800;font-size:13.5px;
}
.order-text{flex:1;line-height:1.65;font-size:15px;}
.order-btns{display:flex;flex-direction:column;gap:2px;flex:0 0 auto;}

.ans-input{margin-bottom:4px;}
.text-input{
  width:100%;font:inherit;font-size:16px;padding:13px 15px;
  background:rgba(255,255,255,.08);border:1px solid var(--panel-line);
  border-radius:12px;color:var(--ink);min-height:48px;
}
.text-input::placeholder{color:rgba(255,255,255,.34);}
.text-input:focus{border-color:var(--gold);background:rgba(255,255,255,.13);}
.text-input.big{font-size:24px;text-align:center;letter-spacing:.12em;font-variant-numeric:tabular-nums;}

.puzzle-msg{margin-top:16px;border-radius:12px;line-height:1.75;}
.puzzle-msg:empty{display:none;}
.puzzle-msg.no{
  background:rgba(239,138,114,.13);border:1px solid rgba(239,138,114,.34);
  padding:13px 15px;color:var(--coral);font-weight:600;
}
.puzzle-msg.ok{
  background:rgba(127,210,193,.11);border:1px solid rgba(127,210,193,.34);padding:16px 17px;
}
.msg-head{font-weight:800;color:var(--jade);font-size:17px;margin-bottom:10px;}
.msg-body p{color:var(--ink-dim);font-size:15.5px;}
.msg-body p:last-child{margin-bottom:0;}
.hint-text{font-size:16px;line-height:1.8;}

/* ── 조각 획득 ───────────────────────────────────────────────────────── */
.shard-panel{text-align:center;}
.shard-big{
  font-family:var(--serif);font-size:clamp(62px,15vw,104px);color:var(--gold);
  text-shadow:0 0 46px rgba(232,195,122,.55);margin-bottom:6px;line-height:1.1;
  animation:pop .6s cubic-bezier(.2,1.4,.4,1) both;
}
@keyframes pop{from{opacity:0;transform:scale(.4) rotate(-12deg)}to{opacity:1;transform:none}}
.shard-title{font-family:var(--serif);font-size:clamp(20px,4vw,28px);}
.shard-mean{color:var(--ink-dim);margin-bottom:20px;}
.record-card{
  background:rgba(255,255,255,.06);border:1px solid var(--panel-line);
  border-radius:12px;padding:14px 16px;margin:0 auto 20px;max-width:460px;text-align:left;
}
.record-label{display:block;font-size:11px;letter-spacing:.16em;color:var(--gold);margin-bottom:6px;}
.record-card b{display:block;font-size:16.5px;margin-bottom:6px;}
.record-card p{margin:0;}
.shard-row,.gate-shards{display:flex;gap:9px;justify-content:center;margin-bottom:8px;flex-wrap:wrap;}
.shard-slot{
  width:46px;height:46px;display:grid;place-items:center;border-radius:11px;
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  color:rgba(255,255,255,.16);font-family:var(--serif);font-size:23px;
}
.shard-slot.on{background:rgba(232,195,122,.2);border-color:var(--gold);color:var(--gold-soft);}
.shard-slot.big{width:56px;height:56px;font-size:28px;}

/* ── 시간의 문 / 결과 ────────────────────────────────────────────────── */
.gate-title{font-family:var(--serif);font-size:clamp(24px,5.4vw,38px);text-align:center;color:var(--sky);}
.gate{text-align:center;}
.gate .brief-body,.gate .gate-records{text-align:left;}
.gate-records{
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:12px;padding:14px 16px;margin:18px 0;
}
.gate-records h3{font-size:13px;letter-spacing:.14em;color:var(--gold);margin-bottom:9px;}
.gate-records ul{margin:0;padding-left:20px;}
.gate-records li{margin-bottom:6px;line-height:1.65;font-size:15px;}

.victory,.result{text-align:center;}
.victory-crest{
  font-family:var(--serif);font-size:clamp(56px,13vw,92px);color:var(--gold);
  text-shadow:0 0 54px rgba(232,195,122,.5);letter-spacing:.06em;
  animation:pop .7s cubic-bezier(.2,1.4,.4,1) both;
}
.victory .brief-body{text-align:left;}
.result-crown{font-size:52px;margin-bottom:6px;}
.result-stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));
  gap:10px;margin:20px 0 26px;
}
.result .card-title{
  text-align:left;font-family:var(--serif);font-size:18px;color:var(--gold-soft);
  margin-top:24px;padding-top:16px;border-top:1px solid var(--panel-line);
}
.record-list,.std-list,.think-list{text-align:left;margin:0;padding-left:20px;}
.record-list li,.std-list li,.think-list li{margin-bottom:9px;line-height:1.72;font-size:15.5px;}
.std-where{color:var(--ink-mute);font-size:13.5px;}
.reflection-box{text-align:left;}
.reflection-input{width:100%;min-height:120px;resize:vertical;line-height:1.65;margin:4px 0 10px;}

/* ── 수준 고르기 ─────────────────────────────────────────────────────── */
.tier-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin-top:20px;}
.tier-card{
  font:inherit;text-align:left;cursor:pointer;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:16px;padding:20px;transition:border-color .18s,background .18s,transform .12s;
}
.tier-card:hover{border-color:var(--gold);background:rgba(232,195,122,.1);transform:translateY(-2px);}
.tier-name{display:block;font-size:20px;font-weight:800;color:var(--gold-soft);margin-bottom:12px;font-family:var(--serif);}
.tier-card ul{margin:0 0 14px;padding-left:19px;}
.tier-card li{margin-bottom:6px;color:var(--ink-dim);line-height:1.6;font-size:14.5px;}
.tier-go{color:var(--gold);font-weight:700;font-size:14.5px;}

/* ── 폼 / 탭 ─────────────────────────────────────────────────────────── */
.form{display:flex;flex-direction:column;gap:8px;margin:18px 0;}
.form .btn{margin-top:10px;align-self:stretch;}
.lab{font-size:14px;color:var(--ink-dim);font-weight:600;margin-top:8px;}
.tabs{display:flex;gap:6px;background:rgba(255,255,255,.05);padding:5px;border-radius:12px;margin-bottom:6px;}
.tab{
  flex:1;font:inherit;font-size:14.5px;font-weight:700;cursor:pointer;
  background:none;border:0;color:var(--ink-mute);padding:11px;border-radius:9px;min-height:42px;
}
.tab.on{background:rgba(232,195,122,.2);color:var(--gold-soft);}
.notice{
  background:rgba(143,208,255,.1);border:1px solid rgba(143,208,255,.3);
  border-radius:11px;padding:12px 14px;font-size:14.5px;line-height:1.7;color:var(--ink-dim);
}
.notice b{color:var(--sky);}
.steps{margin:10px 0;padding-left:22px;}
.steps li{margin-bottom:8px;line-height:1.7;}
.setup p{font-size:15px;}

/* ── 교사 대시보드 ───────────────────────────────────────────────────── */
.teacher .head{margin-top:0;margin-bottom:20px;align-items:flex-start;}
.card{
  background:rgba(255,255,255,.045);border:1px solid var(--panel-line);
  border-radius:14px;padding:16px 18px;margin-bottom:16px;
}
.card-title{font-size:17px;font-family:var(--serif);color:var(--gold-soft);margin:0;}
.class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:14px;}
.class-chip{
  font:inherit;text-align:left;cursor:pointer;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:4px;
}
.class-chip:hover{border-color:var(--gold);}
.class-chip.on{background:rgba(232,195,122,.16);border-color:var(--gold);}
.class-name{font-weight:700;}
.class-code{font-size:19px;letter-spacing:.14em;color:var(--gold);font-variant-numeric:tabular-nums;}
.class-open{font-size:11.5px;color:var(--jade);}
.class-open.off{color:var(--coral);}
.code-pill{
  background:rgba(232,195,122,.18);border:1px solid rgba(232,195,122,.4);
  color:var(--gold-soft);padding:5px 12px;border-radius:999px;
  font-size:13.5px;letter-spacing:.1em;
}
.big-code{
  font-size:clamp(34px,9vw,54px);letter-spacing:.2em;color:var(--gold);
  text-align:center;padding:20px;background:rgba(232,195,122,.1);
  border:1px dashed rgba(232,195,122,.45);border-radius:14px;margin:14px 0;
}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin:14px 0;}
.stat{background:rgba(255,255,255,.05);border-radius:10px;padding:10px 12px;}
.stat-k{display:block;font-size:11.5px;color:var(--ink-mute);margin-bottom:3px;}
.stat-v{font-size:17px;color:var(--gold-soft);}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.dash-table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:720px;}
.dash-table th,.dash-table td{padding:9px 10px;text-align:left;border-bottom:1px solid var(--panel-line);white-space:nowrap;}
.dash-table th{font-size:12px;color:var(--ink-mute);font-weight:700;}
.dash-table tr.done td{background:rgba(127,210,193,.08);}
.mini-bar{display:inline-block;width:64px;height:6px;background:rgba(255,255,255,.14);border-radius:999px;overflow:hidden;vertical-align:middle;}
.mini-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--jade),var(--gold));}
.mini-pct{margin-left:7px;font-size:12px;color:var(--ink-dim);}
.guide summary{cursor:pointer;font-weight:700;color:var(--gold-soft);padding:4px 0;}
.guide h3{font-size:15px;color:var(--gold);margin-top:18px;}
.guide ul,.guide ol{padding-left:22px;}
.guide li{margin-bottom:7px;line-height:1.7;font-size:14.5px;}
.dash-insight{margin-top:20px;padding-top:16px;border-top:1px solid var(--panel-line);}
.dash-insight h3{font-family:var(--serif);font-size:16px;color:var(--gold-soft);margin:0 0 12px;}
.wrong-list{margin:0;padding-left:24px;display:grid;gap:8px;}
.wrong-list li{padding-left:4px;}
.wrong-list b,.wrong-list span{display:block;}
.wrong-list span{font-size:12.5px;color:var(--ink-mute);margin-top:2px;}
.reflection-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;}
.reflection-card{background:rgba(255,255,255,.05);border:1px solid var(--panel-line);border-radius:11px;padding:12px;}
.reflection-card b{font-size:13px;color:var(--jade);}
.reflection-card p{font-size:14px;line-height:1.65;margin:7px 0 0;white-space:pre-wrap;}
.reflection-head{gap:12px;align-items:center;}
.mini.active{border-color:var(--gold);color:var(--gold-soft);background:rgba(232,195,122,.16);}

/* ── 교사용 인쇄 학습지 ─────────────────────────────────────────────── */
.worksheet{text-align:left;}
.worksheet-head{text-align:center;border-bottom:2px solid rgba(232,195,122,.45);padding-bottom:18px;margin-bottom:20px;}
.worksheet-kicker{font-size:12px;letter-spacing:.08em;color:var(--gold);}
.worksheet-head h1{font-family:var(--serif);font-size:30px;}
.worksheet-meta{margin-top:18px;padding:10px;border:1px solid var(--panel-line);border-radius:8px;}
.worksheet-missions{padding-left:24px;display:grid;gap:14px;}
.worksheet-missions>li{padding-left:5px;break-inside:avoid;}
.worksheet-mission-head{display:flex;justify-content:space-between;gap:12px;align-items:baseline;}
.worksheet-mission-head b{color:var(--gold-soft);}
.worksheet-mission-head span{font-size:12px;color:var(--ink-mute);}
.worksheet-missions p,.worksheet-finish p{font-size:14px;line-height:1.55;margin:4px 0;}
.answer-lines{white-space:pre-line;color:var(--ink-mute);font-size:12px;line-height:1.8;overflow:hidden;}
.worksheet-finish{break-inside:avoid;border-top:1px solid var(--panel-line);margin-top:22px;padding-top:16px;}
.worksheet-finish h2{font-size:18px;color:var(--gold-soft);}
.worksheet-footer{text-align:right;font-size:11px;color:var(--ink-mute);margin-top:20px;}

/* ── 학생 활동 소감 PDF/인쇄 ────────────────────────────────────────── */
.reflection-print{text-align:left;}
.reflection-print-head{text-align:center;border-bottom:2px solid rgba(232,195,122,.45);padding-bottom:18px;margin-bottom:20px;}
.reflection-print-head h1{font-family:var(--serif);font-size:30px;margin:8px 0;}
.reflection-print-head p{margin:5px 0;}
.reflection-print-list{margin:0;padding:0;list-style:none;display:grid;gap:14px;}
.reflection-print-list li{break-inside:avoid;border:1px solid var(--panel-line);border-radius:10px;padding:15px 16px;background:rgba(255,255,255,.035);}
.reflection-print-meta{display:flex;justify-content:space-between;gap:12px;align-items:baseline;border-bottom:1px solid var(--panel-line);padding-bottom:8px;}
.reflection-print-meta b{color:var(--gold-soft);font-size:16px;}
.reflection-print-meta span{color:var(--ink-mute);font-size:12px;}
.reflection-print-list p{margin:12px 0 0;white-space:pre-wrap;line-height:1.75;font-size:15px;}
.reflection-print-footer{text-align:right;color:var(--ink-mute);font-size:11px;margin-top:20px;}

/* ── 모달 ────────────────────────────────────────────────────────────── */
.modal-wrap{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:16px;}
.modal-back{position:absolute;inset:0;background:rgba(2,4,10,.7);backdrop-filter:blur(4px);}
.modal{
  position:relative;background:#0c1122;border:1px solid var(--panel-line);
  border-radius:18px;width:min(640px,100%);max-height:86dvh;display:flex;flex-direction:column;
  box-shadow:0 30px 80px rgba(0,0,0,.6);animation:rise .3s ease both;
}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px 18px;border-bottom:1px solid var(--panel-line);}
.modal-head h2{margin:0;font-size:18px;font-family:var(--serif);color:var(--gold-soft);}
.modal-body{padding:18px;overflow-y:auto;}
.modal-body h3{font-size:15.5px;color:var(--gold);margin-top:18px;}
.modal-body ul,.modal-body ol{padding-left:22px;}
.modal-body li{margin-bottom:8px;line-height:1.72;font-size:15px;}
.modal-foot{padding:14px 18px;border-top:1px solid var(--panel-line);display:flex;justify-content:flex-end;gap:10px;}
.notebook section{margin-bottom:20px;}
.notebook h3{font-size:14.5px;color:var(--gold);margin-bottom:9px;}
.notebook ul{list-style:none;padding:0;}
.notebook li{
  background:rgba(255,255,255,.05);border-radius:10px;padding:11px 13px;margin-bottom:8px;
  border-left:3px solid rgba(127,210,193,.5);
}
.notebook li b{display:block;color:var(--jade);margin-bottom:4px;font-size:14.5px;}
.notebook li span{font-size:14px;color:var(--ink-dim);line-height:1.7;}
.std-box{text-align:center;}
.std-code{font-size:23px;color:var(--gold);font-weight:800;letter-spacing:.04em;}
.std-text{font-size:17px;line-height:1.8;margin:10px 0;}
.std-area{color:var(--ink-mute);font-size:14px;}
.code-reveal{text-align:center;}

/* ── 토스트 ──────────────────────────────────────────────────────────── */
#toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:90;
  display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:min(440px,92vw);}
.toast{
  background:rgba(12,17,34,.96);border:1px solid var(--panel-line);
  border-radius:12px;padding:12px 18px;font-size:14.5px;color:var(--ink);
  box-shadow:0 12px 34px rgba(0,0,0,.5);opacity:0;transform:translateY(12px);
  transition:opacity .3s,transform .3s;text-align:center;
}
.toast.in{opacity:1;transform:none;}
.toast.good{border-color:rgba(127,210,193,.5);color:var(--jade);}
.toast.bad{border-color:rgba(239,138,114,.5);color:var(--coral);}
.toast.warn{border-color:rgba(232,195,122,.5);color:var(--gold-soft);}

/* ── 좁은 화면 ───────────────────────────────────────────────────────── */
@media (max-width:520px){
  .portrait{width:54px;height:54px;flex-basis:54px;}
  .who-name{font-size:17px;}
  .source{padding:14px;}
  .btn.big{width:100%;}
  .title-actions .btn{width:100%;}
  .row-end,.row-between{justify-content:stretch;}
  .row-end .btn{flex:1;}
  .historical-material{grid-template-columns:66px 1fr;}
  .historical-material img{width:66px;height:54px;}
}

/* ── 인쇄(학습지로 쓰기) ─────────────────────────────────────────────── */
@media print{
  #backdrop,#grain,#hud,#toasts,.btn,.no-print{display:none !important;}
  @page{size:A4;margin:12mm;}
  html,body{height:auto;min-height:0;}
  body{background:#fff;color:#000;}
  #stage{max-width:none;margin:0;padding:0;min-height:0;}
  .panel{background:#fff;border:0;box-shadow:none;backdrop-filter:none;padding:0;}
  .source{background:#fafafa;}
  p,li{color:#000 !important;}
  .worksheet-head{border-color:#555;}
  .worksheet-head h1{font-size:23px;}
  .worksheet-kicker,.worksheet-mission-head b,.worksheet-finish h2{color:#000;}
  .worksheet-meta{border-color:#777;}
  .worksheet-missions{grid-template-columns:1fr 1fr;column-gap:28px;row-gap:9px;}
  .worksheet-missions>li{font-size:12px;}
  .worksheet-missions p,.worksheet-finish p{font-size:11px;}
  .worksheet-mission-head{display:block;}
  .worksheet-mission-head span{display:block;color:#555;font-size:9px;}
  .answer-lines{color:#777;font-size:9px;}
  .reflection-print-head{border-color:#555;}
  .reflection-print-head h1{font-size:23px;color:#000;}
  .reflection-print-list{gap:9px;}
  .reflection-print-list li{border-color:#777;background:#fff;padding:10px 12px;}
  .reflection-print-meta{border-color:#aaa;}
  .reflection-print-meta b,.reflection-print-meta span{color:#000;}
  .reflection-print-list p{font-size:11.5px;line-height:1.65;color:#000;}
  .reflection-print-footer{color:#555;}
}