:root{
  --bg:#0b1018;
  --panel:#151b25;
  --panel2:#1b2330;
  --panel3:#101620;
  --text:#e2dac7;
  --muted:#9aa5b7;
  --gold:#b89b5e;
  --gold2:#d8c58f;
  --line:#3b4658;
  --danger:#d08a8a;
}

*{box-sizing:border-box}

html,body{
  margin:0;
  min-height:100%;
}

body{
  min-height:100vh;
  background:
    radial-gradient(circle at 50% 0%, rgba(82,103,137,.34), transparent 42%),
    radial-gradient(circle at 15% 80%, rgba(184,155,94,.10), transparent 35%),
    linear-gradient(180deg,#101827,var(--bg) 72%);
  color:var(--text);
  font-family:"Microsoft JhengHei","PingFang TC","Noto Sans TC",system-ui,sans-serif;
  display:grid;
  place-items:center;
  padding:28px;
  overflow:hidden;
}

.bg-noise{
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.12;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:36px 36px;
  mask-image:radial-gradient(circle at center, black, transparent 82%);
}

.hidden{display:none!important}

.lock-shell,.story-shell{
  width:min(920px,100%);
  display:grid;
  place-items:center;
}

.lock-panel{
  width:min(460px,100%);
  min-height:430px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.035),transparent),
    var(--panel);
  border:1px solid var(--gold);
  box-shadow:
    0 22px 50px rgba(0,0,0,.5),
    inset 0 0 0 1px rgba(255,255,255,.04);
  padding:42px 34px;
  text-align:center;
  position:relative;
}

.lock-panel:before,.story-panel:before{
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(184,155,94,.32);
  pointer-events:none;
}

.crest{
  width:44px;
  height:44px;
  border:1px solid var(--gold);
  display:grid;
  place-items:center;
  margin:0 auto 18px;
  color:var(--gold2);
  border-radius:50%;
  background:#111722;
}

h1{
  margin:0;
  color:var(--gold2);
  font-size:24px;
  letter-spacing:.09em;
  font-weight:500;
}

.subtitle{
  margin:8px 0 28px;
  color:var(--muted);
  letter-spacing:.12em;
  font-size:13px;
  font-family:Georgia,"Times New Roman",serif;
}

.hint{
  margin:0 0 16px;
  color:var(--text);
  font-size:14px;
  letter-spacing:.25em;
  opacity:.9;
}

.code-row{
  display:flex;
  justify-content:center;
  gap:12px;
  margin:0 0 26px;
}

select{
  appearance:none;
  width:78px;
  background:
    linear-gradient(180deg,#273244,#1a2230);
  color:var(--text);
  border:1px solid var(--line);
  border-bottom-color:var(--gold);
  padding:12px 14px;
  font-size:20px;
  text-align:center;
  text-align-last:center;
  border-radius:2px;
}

button{
  font-family:inherit;
}

.main-btn{
  background:#202938;
  color:var(--text);
  border:1px solid var(--gold);
  padding:12px 42px;
  font-size:16px;
  letter-spacing:.1em;
  cursor:pointer;
}

.main-btn:hover,.next-btn:hover,.restart-btn:hover{
  background:#2a3446;
}

.main-btn:disabled{
  opacity:.45;
  cursor:not-allowed;
}

.error{
  min-height:24px;
  color:var(--danger);
  margin:18px 0 0;
}

.shake{
  animation:shake .32s ease-in-out;
}

@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-8px)}
  40%{transform:translateX(8px)}
  60%{transform:translateX(-6px)}
  80%{transform:translateX(6px)}
}

.story-panel{
  width:min(860px,100%);
  height:min(78vh,720px);
  min-height:560px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.025),transparent),
    var(--panel3);
  border:1px solid var(--gold);
  box-shadow:0 22px 55px rgba(0,0,0,.58);
  padding:34px 34px 76px;
  position:relative;
}

.content{
  height:100%;
  overflow-y:auto;
  padding:8px 12px 22px 0;
  scroll-behavior:smooth;
}

.content::-webkit-scrollbar{
  width:10px;
}
.content::-webkit-scrollbar-track{
  background:#0c1119;
  border-left:1px solid rgba(184,155,94,.16);
}
.content::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,#4a5362,#252d3a);
  border:1px solid #636d7f;
  border-radius:10px;
}
.content{
  scrollbar-width:thin;
  scrollbar-color:#4a5362 #0c1119;
}

.story-line{
  margin:0 0 24px;
  padding:0 0 0 18px;
  border-left:2px solid rgba(184,155,94,.82);
  font-size:18px;
  line-height:2.05;
  letter-spacing:.035em;
  white-space:pre-wrap;
}

.chat-line{
  max-width:74%;
  margin:14px 0;
  padding:14px 18px;
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  line-height:1.9;
  letter-spacing:.035em;
  font-size:17px;
  box-shadow:0 8px 18px rgba(0,0,0,.16);
  white-space:pre-wrap;
}

.chat-line.left{
  margin-right:auto;
  border-left:2px solid var(--gold);
}

.chat-line.right{
  margin-left:auto;
  background:rgba(184,155,94,.07);
  border-right:2px solid var(--gold);
}

.controls{
  position:absolute;
  right:22px;
  bottom:18px;
}

.next-btn{
  width:54px;
  height:46px;
  border-radius:999px;
  background:#202938;
  color:var(--gold2);
  border:1px solid var(--gold);
  font-size:22px;
  cursor:pointer;
  box-shadow:0 8px 18px rgba(0,0,0,.28);
}

.restart-wrap{
  height:100%;
  display:grid;
  place-items:center;
  text-align:center;
}

.end-title{
  color:var(--gold2);
  font-size:22px;
  letter-spacing:.16em;
  margin-bottom:20px;
}

.restart-btn{
  background:#202938;
  color:var(--text);
  border:1px solid var(--gold);
  padding:12px 34px;
  cursor:pointer;
  font-size:15px;
}

@media(max-width:640px){
  body{padding:14px}
  .story-panel{
    height:86vh;
    min-height:0;
    padding:24px 20px 70px;
  }
  .story-line,.chat-line{font-size:16px}
  .chat-line{max-width:88%}
}