@charset "utf-8";

:root{
  --paper:#f2e9d6;
  --paper-2:#e9dec5;
  --ink:#3b362d;
  --ink-soft:#6c6557;
  --ink-faint:#9a917e;
  --cinnabar:#a74635;
  --cinnabar-deep:#7d3428;
  --jade:#6f8178;
  --gold:#b08d4f;
  --hair:rgba(59,54,45,.20);
  --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","SimSun",serif;
  --kai:"Kaiti SC","STKaiti","KaiTi","楷体","Songti SC",serif;
  --spectrum-h:118px;
  --cd-size:78px;
}

*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(ellipse 70% 55% at 22% 30%, #f8f1e0 0%, rgba(248,241,224,0) 70%),
    radial-gradient(ellipse 60% 50% at 82% 18%, #f6eeda 0%, rgba(246,238,218,0) 72%),
    linear-gradient(160deg,#f3ead7 0%,#eee3cb 55%,#e7dbc0 100%);
  color:var(--ink);
  font-family:var(--serif);
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}

/* 宣紙纖維 */
.paper-grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.42;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23n)' opacity='.20'/%3E%3C/svg%3E");
}
.paper-grain::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(96deg,rgba(120,105,75,.035) 0 1px,transparent 1px 7px);
}

.mountains{position:fixed;left:0;bottom:var(--spectrum-h);width:100%;height:34vh;z-index:0;pointer-events:none}

/* 頂欄 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:52px;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(18px,3vw,44px);
  border-bottom:1px solid var(--hair);
  background:linear-gradient(180deg,rgba(246,238,220,.86),rgba(246,238,220,.32));
  backdrop-filter:blur(3px);
  font-size:13px;letter-spacing:.12em;
}
.topbar a{color:var(--ink-soft);text-decoration:none;padding:6px 2px;border-bottom:1px solid transparent;transition:.25s}
.topbar a:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar)}
.topbar-mid{font-family:var(--kai);font-size:15px;letter-spacing:.55em;color:var(--ink-faint);padding-left:.55em}

/* 唱片 */
/* 容器寬高固定等於唱片直徑；提示文字絕對定位，絕不參與撐寬，點擊時才不會跳位 */
.cd-area{
  position:fixed;right:clamp(18px,3vw,46px);top:70px;
  width:var(--cd-size);height:var(--cd-size);z-index:22;text-align:center;
}
.cd{
  width:var(--cd-size);height:var(--cd-size);border:0;padding:0;border-radius:50%;cursor:pointer;background:transparent;
  display:block;position:relative;
}
.cd:focus{outline:none}
.cd:focus-visible{outline:2px solid rgba(167,70,53,.5);outline-offset:6px;border-radius:50%}
.cd::before{
  content:"";position:absolute;inset:-7px;border-radius:50%;
  border:1px solid rgba(167,70,53,.0);transition:.4s;
}
.cd.playing::before{border-color:rgba(167,70,53,.32);box-shadow:0 0 0 5px rgba(167,70,53,.055)}
.cd-disc{
  position:absolute;inset:0;border-radius:50%;display:block;overflow:hidden;
  background:
    repeating-radial-gradient(circle at 50% 50%,rgba(255,255,255,.055) 0 1px,rgba(0,0,0,0) 1px 3.4px),
    radial-gradient(circle at 34% 28%,#5a544a 0%,#312d28 48%,#1f1c19 100%);
  border:2px solid #4a443b;
  box-shadow:0 5px 16px rgba(48,40,28,.30),inset 0 0 0 1px rgba(255,255,255,.08);
  animation:spin 5.2s linear infinite;animation-play-state:paused;
  transition:box-shadow .4s;
}
.cd.playing .cd-disc{animation-play-state:running}
@keyframes spin{to{transform:rotate(360deg)}}
.cd-grooves{
  position:absolute;inset:8px;border-radius:50%;
  border:1px solid rgba(226,214,184,.16);
  box-shadow:inset 0 0 0 6px rgba(226,214,184,.035),inset 0 0 0 12px rgba(226,214,184,.03);
}
.cd-label-ring{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;line-height:1.35;text-align:center;
  font-family:var(--kai);font-size:8.5px;letter-spacing:.06em;color:#e8dcc0;
  text-shadow:0 1px 2px rgba(0,0,0,.6);
}
.cd-hole{
  position:absolute;left:50%;top:50%;width:9px;height:9px;margin:-4.5px 0 0 -4.5px;
  border-radius:50%;background:var(--cinnabar);border:1.5px solid #efe3c8;
  box-shadow:0 0 0 1px rgba(0,0,0,.35);
}
.cd-hint{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%);
  font-size:11px;letter-spacing:.14em;color:var(--ink-faint);
  white-space:nowrap;transition:color .3s;pointer-events:none;
}
.cd-hint.on{color:var(--cinnabar)}

/* 大師 */
.master-wrap{
  position:fixed;left:clamp(-6px,0vw,10px);bottom:calc(var(--spectrum-h) - 6px);
  width:20vw;min-width:224px;max-width:330px;z-index:3;
  animation:masterIn 1.5s cubic-bezier(.22,.7,.3,1) both;
}
@keyframes masterIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
#master{display:block;width:100%;height:auto;filter:drop-shadow(0 12px 22px rgba(70,58,38,.13))}
.cloud-a{animation:drift 17s ease-in-out infinite alternate}
.cloud-b{animation:drift 23s ease-in-out infinite alternate-reverse}
.cloud-c{animation:drift 13s ease-in-out infinite alternate}
@keyframes drift{from{transform:translateX(-7px)}to{transform:translateX(9px)}}

/* 豎排題字 */
.title-col{
  position:fixed;right:clamp(140px,10vw,190px);top:clamp(120px,17vh,190px);z-index:4;
  writing-mode:vertical-rl;text-orientation:upright;
  display:flex;align-items:flex-start;gap:18px;
  animation:fadeIn 1.8s .3s both;
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
.title-col h1{
  margin:0;font-family:var(--kai);font-weight:400;
  font-size:clamp(50px,5.4vw,82px);letter-spacing:.06em;
  color:var(--ink);text-shadow:0 2px 0 rgba(255,255,255,.35);
}
.title-col p{
  margin:6px 0 0;font-size:14px;letter-spacing:.42em;color:var(--ink-soft);
}
.title-seal{
  writing-mode:horizontal-tb;margin-top:8px;
  display:inline-block;width:30px;height:30px;line-height:15px;
  padding:0 2px;border:1.6px solid var(--cinnabar);color:var(--cinnabar);
  font-family:var(--kai);font-size:11px;letter-spacing:0;text-align:center;
  border-radius:2px;transform:rotate(-3deg);opacity:.85;
}

/* 問事區 */
.oracle{
  position:absolute;left:30%;top:clamp(160px,24vh,240px);
  width:min(500px,44vw);z-index:6;
  animation:fadeIn 1.7s .55s both;
}
.oracle-lead{
  font-family:var(--kai);font-size:clamp(17px,1.5vw,21px);
  letter-spacing:.22em;color:var(--ink-soft);margin-bottom:26px;
}
.oracle-lead::before{content:"「";color:var(--ink-faint);margin-right:2px}
.oracle-lead::after{content:"」";color:var(--ink-faint);margin-left:2px}

.ask-row{display:flex;align-items:flex-end;gap:14px;border-bottom:1px solid rgba(59,54,45,.42);padding-bottom:9px}
#ask{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-family:var(--serif);font-size:17px;color:var(--ink);letter-spacing:.08em;
  padding:6px 2px;
}
#ask::placeholder{color:var(--ink-soft);opacity:.72;font-size:15px}
#ask-btn{
  flex:0 0 auto;width:44px;height:44px;border:0;cursor:pointer;
  background:var(--cinnabar);color:#f7efdd;font-family:var(--kai);font-size:20px;
  border-radius:3px;box-shadow:2px 2px 0 rgba(125,52,40,.28);transition:.22s;
}
#ask-btn:hover{background:var(--cinnabar-deep);transform:translateY(-2px)}
#ask-btn:active{transform:translateY(1px);box-shadow:none}

.samples{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.samples button{
  border:1px solid rgba(59,54,45,.24);background:rgba(255,252,243,.36);
  color:var(--ink-soft);font-family:var(--serif);font-size:12px;letter-spacing:.08em;
  padding:5px 11px;border-radius:2px;cursor:pointer;transition:.22s;
}
.samples button:hover{border-color:var(--cinnabar);color:var(--cinnabar);background:rgba(167,70,53,.05)}

/* 批答 */
.answer{
  display:flex;gap:16px;margin-top:26px;padding:20px 22px 18px;
  background:linear-gradient(135deg,rgba(255,252,242,.78),rgba(248,240,222,.60));
  border:1px solid rgba(59,54,45,.18);border-left:3px solid var(--cinnabar);
  box-shadow:0 8px 26px rgba(84,68,42,.09);
  animation:answerIn .55s cubic-bezier(.2,.75,.3,1) both;
}
@keyframes answerIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.answer-mark{
  flex:0 0 30px;width:30px;height:30px;line-height:28px;text-align:center;
  border:1.5px solid var(--cinnabar);color:var(--cinnabar);
  font-family:var(--kai);font-size:15px;border-radius:2px;transform:rotate(-4deg);
}
.answer.vetoed{border-left-color:var(--cinnabar-deep);background:linear-gradient(135deg,rgba(255,246,240,.88),rgba(248,232,220,.72))}
.answer.vetoed .answer-mark{background:var(--cinnabar);color:#fff8ea}
.answer-body{flex:1;min-width:0}
.answer-text{
  font-family:var(--kai);font-size:clamp(18px,1.7vw,23px);line-height:1.95;
  letter-spacing:.06em;color:var(--ink);
}
.answer-note{margin-top:10px;font-size:12.5px;line-height:1.8;color:var(--ink-soft);letter-spacing:.04em}
.gates{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px;padding-top:13px;border-top:1px dashed rgba(59,54,45,.20)}
.gate-pill{
  font-size:11px;letter-spacing:.06em;padding:4px 9px;border-radius:2px;
  border:1px solid rgba(59,54,45,.20);color:var(--ink-faint);background:rgba(255,255,255,.28);
}
.gate-pill.pass{border-color:rgba(111,129,120,.55);color:#4d6a5d;background:rgba(111,129,120,.09)}
.gate-pill.veto{border-color:var(--cinnabar);color:var(--cinnabar);background:rgba(167,70,53,.08);font-weight:600}

/* 規矩 */
.rules-toggle{
  position:absolute;left:30%;bottom:calc(var(--spectrum-h) + 34px);z-index:8;
  border:0;background:transparent;cursor:pointer;padding:6px 0;
  font-family:var(--serif);font-size:12.5px;letter-spacing:.2em;color:var(--ink-faint);
  border-bottom:1px solid rgba(59,54,45,.28);transition:.22s;
}
.rules-toggle:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar)}
.rules-toggle span{margin-left:6px;font-size:14px}
.rules{
  position:absolute;left:30%;top:clamp(120px,17vh,180px);width:min(500px,44vw);
  max-height:64vh;overflow-y:auto;z-index:12;
  padding:26px 28px 24px;
  background:linear-gradient(150deg,rgba(252,247,234,.97),rgba(243,234,214,.97));
  border:1px solid rgba(59,54,45,.28);box-shadow:0 18px 46px rgba(70,56,34,.20);
  animation:answerIn .4s both;
}
.rules::-webkit-scrollbar{width:5px}
.rules::-webkit-scrollbar-thumb{background:rgba(59,54,45,.25);border-radius:3px}
.rules h2{margin:0 0 8px;font-family:var(--kai);font-size:24px;font-weight:400;letter-spacing:.14em}
.rules-intro{margin:0 0 20px;font-size:13px;line-height:1.9;color:var(--ink-soft)}
.gate-item{display:flex;gap:14px;padding:13px 0;border-top:1px dashed rgba(59,54,45,.22)}
.gate-no{
  flex:0 0 26px;width:26px;height:26px;line-height:24px;text-align:center;
  border:1px solid var(--jade);color:var(--jade);font-family:var(--kai);font-size:14px;border-radius:50%;
}
.gate-item b{display:block;font-size:14px;font-weight:600;letter-spacing:.08em;margin-bottom:5px}
.gate-item p{margin:0;font-size:12.8px;line-height:1.9;color:var(--ink-soft)}
.rules-boundary{margin-top:16px;padding:15px 16px;background:rgba(167,70,53,.055);border-left:2px solid var(--cinnabar)}
.rules-boundary b{font-size:13.5px;letter-spacing:.08em;color:var(--cinnabar-deep)}
.rules-boundary p{margin:6px 0 0;font-size:12.8px;line-height:1.9;color:var(--ink-soft)}
.rules-src{margin:18px 0 0;font-size:11.5px;line-height:1.8;color:var(--ink-faint)}
.rules-src a{color:var(--cinnabar)}

/* 聲譜 */
.spectrum{
  position:fixed;left:0;right:0;bottom:0;height:var(--spectrum-h);z-index:10;
  background:linear-gradient(180deg,rgba(238,229,209,.42) 0%,rgba(226,215,190,.78) 34%,rgba(211,198,170,.94) 100%);
  border-top:1px solid rgba(59,54,45,.26);
  box-shadow:0 -6px 22px rgba(90,74,48,.09);
  padding:8px clamp(14px,2.4vw,34px) 10px;
}
.spectrum-top{display:flex;justify-content:flex-start;align-items:center;gap:22px;height:16px;margin-bottom:6px}
.spectrum-name{font-family:var(--kai);font-size:11px;letter-spacing:.34em;color:var(--ink-faint)}
.spectrum-state{font-size:10.5px;letter-spacing:.22em;color:var(--ink-faint)}
.spectrum-state.on{color:var(--cinnabar)}
.bars{display:flex;align-items:flex-end;gap:4px;height:calc(100% - 22px)}
.bar{position:relative;flex:1 1 0;height:100%;display:flex;flex-direction:column-reverse;gap:2px;min-width:2px}
.seg{
  flex:1 1 0;border-radius:1px;background:rgba(59,54,45,.085);
  transition:background .07s linear,box-shadow .07s linear;
}
.seg.on{background:var(--jade);box-shadow:0 0 5px rgba(111,129,120,.45)}
.seg.on.g{background:var(--gold);box-shadow:0 0 6px rgba(176,141,79,.55)}
.seg.on.r{background:#b85c40;box-shadow:0 0 7px rgba(184,92,64,.6)}
.seg.on.t{background:#d8724e;box-shadow:0 0 9px rgba(216,114,78,.75)}
.peak{
  position:absolute;left:0;right:0;height:2px;border-radius:1px;
  background:rgba(167,70,53,.85);bottom:0;opacity:0;transition:bottom .09s linear,opacity .2s;
}
.peak.on{opacity:.9}

/* 頁腳 */
.footer{
  position:fixed;right:clamp(14px,2.4vw,34px);bottom:calc(var(--spectrum-h) + 20px);z-index:14;
  display:flex;align-items:center;gap:9px;font-size:11.5px;letter-spacing:.1em;
}
.footer a{color:var(--ink-soft);text-decoration:none;border-bottom:1px solid rgba(59,54,45,.25);padding-bottom:2px;transition:.22s}
.footer a:hover{color:var(--cinnabar);border-bottom-color:var(--cinnabar)}
.footer .dot{color:var(--ink-faint)}

@media (max-width:1000px){
  :root{--spectrum-h:98px;--cd-size:62px}
  .master-wrap{width:38vw;min-width:180px;max-width:260px;left:-3vw;bottom:calc(var(--spectrum-h) - 10px)}
  .title-col{right:clamp(104px,12vw,140px);top:110px;gap:10px}
  .title-col h1{font-size:44px}
  .title-col p{font-size:11px;letter-spacing:.24em}
  .oracle{left:8vw;top:clamp(170px,26vh,250px);width:min(500px,60vw)}
  .rules{left:8vw;width:min(500px,64vw)}
  .rules-toggle{left:8vw}
  .cd-area{right:18px;top:62px}
  .cd-label-ring{font-size:7px;width:42px}
}

@media (max-width:680px){
  :root{--spectrum-h:88px;--cd-size:54px}
  body{overflow:hidden}
  .topbar{height:46px;font-size:11.5px;letter-spacing:.04em;padding:0 14px}
  .topbar-mid{font-size:12px;letter-spacing:.3em}
  .cd-area{right:12px;top:54px}
  .cd-label-ring{display:none}
  .cd-hint{top:calc(100% + 8px);font-size:9px;letter-spacing:.04em}
  .master-wrap{width:44vw;min-width:150px;left:-5vw;bottom:calc(var(--spectrum-h) - 14px);opacity:.96}
  .title-col{left:6vw;right:auto;top:60px;writing-mode:horizontal-tb;display:block;text-align:left}
  .title-col h1{font-size:28px;letter-spacing:.12em}
  .title-col p{font-size:9.5px;letter-spacing:.1em;margin-top:2px}
  .title-seal{display:none}
  .oracle{left:6vw;right:6vw;top:clamp(140px,22vh,190px);width:auto}
  .oracle-lead{font-size:15px;margin-bottom:16px;letter-spacing:.1em}
  #ask{font-size:15px}
  #ask-btn{width:40px;height:40px;font-size:18px}
  .samples{gap:6px;margin-top:12px}
  .samples button{font-size:11px;padding:4px 8px}
  .answer{margin-top:16px;padding:14px;gap:10px}
  .answer-text{font-size:17px;line-height:1.8}
  .answer-note{font-size:11.5px}
  .gate-pill{font-size:10px;padding:3px 7px}
  .rules{left:5vw;right:5vw;width:auto;top:110px;max-height:62vh;padding:18px}
  .rules-toggle{left:auto;right:5vw;bottom:calc(var(--spectrum-h) + 40px);font-size:10.5px}
  .footer{left:auto;right:5vw;justify-content:flex-end;bottom:calc(var(--spectrum-h) + 14px);font-size:9px;gap:7px}
  .footer .dot{display:none}
  .spectrum{padding:6px 10px 8px}
  .bars{gap:2px}
  .spectrum-name{font-size:9px;letter-spacing:.16em}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}