:root{--night:#06162d;--panel:#0c2344;--panel2:#102b52;--gold:#e8c77b;--cream:#fff8e9;--dawn:#f5b27e;--ink:#eaf3ff;--muted:#b8c5d9;--line:rgba(232,199,123,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;background:radial-gradient(circle at 50% 0,#143965 0,#06162d 42%,#030b18 100%);color:var(--ink);min-height:100vh}a{color:inherit}.wrap{width:min(1120px,94%);margin:auto}.topbar{position:sticky;top:0;z-index:30;background:rgba(3,11,24,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:12px}.brand{font-size:clamp(16px,2vw,22px);letter-spacing:.08em}.chip,.btn{border:1px solid var(--line);border-radius:999px;padding:10px 18px;background:rgba(12,35,68,.8);color:var(--cream);cursor:pointer}.btn.primary{background:linear-gradient(135deg,#203f78,#b6813a);font-weight:700}.btn.light{background:var(--cream);color:#1c2940}.hero{min-height:92vh;display:grid;place-items:center;position:relative;overflow:hidden;padding:40px 0}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(3,8,18,.2),rgba(3,8,18,.84)),url('title.png') center/cover no-repeat}.hero-card{position:relative;text-align:center;max-width:820px;padding:clamp(24px,5vw,56px);border:1px solid var(--line);border-radius:28px;background:rgba(4,15,31,.66);box-shadow:0 28px 80px #0008}.eyebrow{color:var(--gold);letter-spacing:.2em}.hero h1{font-size:clamp(42px,7vw,82px);margin:.25em 0 .1em;line-height:1.05;text-shadow:0 3px 20px #000}.subtitle{font-size:clamp(16px,2vw,22px);color:var(--gold)}.meta{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:25px 0}.actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.section{padding:74px 0}.section h2{text-align:center;font-size:clamp(28px,4vw,42px);margin:0 0 32px}.lead{max-width:760px;margin:0 auto 34px;text-align:center;line-height:2;color:var(--muted)}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(3,1fr)}.card{background:linear-gradient(180deg,rgba(16,43,82,.92),rgba(7,24,48,.95));border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 15px 40px #0004}.character{overflow:hidden;padding:0}.character img{width:100%;aspect-ratio:4/5;object-fit:cover;display:block}.character .body{padding:20px}.character h3{margin:0 0 6px;font-size:25px}.role{color:var(--gold)}.story{font-size:17px;line-height:2}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:7px}.field label{color:var(--gold)}input,select,textarea{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:#071a35;color:white;font:inherit}textarea{min-height:150px}.session-box{max-width:780px;margin:auto}.links{display:grid;gap:12px;margin-top:18px}.linkline{display:grid;grid-template-columns:1fr auto;gap:8px}.notice{border-left:4px solid var(--gold);padding:14px 18px;background:#0b2446;border-radius:10px;line-height:1.8}.footer{padding:40px 0;text-align:center;color:var(--muted);border-top:1px solid var(--line)}
.player-shell{padding:34px 0 70px}.status{display:grid;grid-template-columns:180px 1fr auto;gap:16px;align-items:center;margin:18px 0 24px}.clock{font-size:42px;color:var(--gold);font-variant-numeric:tabular-nums}.progress{height:12px;background:#071529;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,#567acc,#f1b16f)}.handout{display:grid;grid-template-columns:330px 1fr;gap:20px}.profile-card img{width:100%;border-radius:15px;aspect-ratio:4/5;object-fit:cover}.profile-card h1{margin-bottom:4px}.panels{display:grid;grid-template-columns:1fr 1fr;gap:16px}.panel{background:rgba(11,36,70,.92);border:1px solid var(--line);border-radius:16px;padding:18px;line-height:1.8}.panel h2,.panel h3{margin-top:0;color:var(--cream)}.panel.secret{box-shadow:0 0 24px rgba(232,199,123,.22);border-color:var(--gold)}.phase{display:none}.phase.unlocked{display:block}.lock-placeholder{padding:36px;text-align:center;color:var(--muted)}.hidden{display:none!important}.evidence-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.evidence{background:#f8f0dc;color:#17233a;border-radius:15px;padding:18px}.evidence h3{margin-top:0}.audio-fake{height:58px;background:repeating-linear-gradient(90deg,#38547d 0 2px,transparent 2px 7px);opacity:.75}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.truth{background:linear-gradient(180deg,#fff6e7,#f9d0a1);color:#17233a;border-radius:24px;padding:28px;line-height:1.9}.ending{min-height:70vh;display:grid;place-items:center;text-align:center;background:linear-gradient(rgba(9,23,46,.18),rgba(255,190,130,.35)),radial-gradient(circle at 50% 100%,#ffd9a7 0,#b994ba 38%,#142d59 76%);border-radius:24px;padding:40px}.ending h2{font-size:clamp(34px,6vw,64px)}
@media(max-width:760px){.grid.two,.grid.three,.form-row,.handout,.panels,.evidence-grid,.answer-grid{grid-template-columns:1fr}.status{grid-template-columns:1fr}.hero{min-height:84vh}.character img{aspect-ratio:5/4;object-position:top}.linkline{grid-template-columns:1fr}.clock{font-size:36px}.panel{padding:16px}.section{padding:54px 0}}

/* BGM */
.bgm-gate{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;padding:22px;background:rgba(3,12,28,.86);backdrop-filter:blur(10px);transition:opacity .5s ease}
.bgm-gate.closing{opacity:0;pointer-events:none}
.bgm-gate-card{width:min(520px,100%);padding:34px 28px;border:1px solid rgba(232,199,123,.75);border-radius:24px;text-align:center;background:linear-gradient(160deg,rgba(11,36,70,.98),rgba(20,44,81,.98));box-shadow:0 24px 70px rgba(0,0,0,.48)}
.bgm-gate-card h2{margin:4px 0 12px;color:var(--cream);font-size:clamp(25px,5vw,36px)}
.bgm-gate-card p{color:var(--muted);line-height:1.8}
.bgm-star{color:var(--gold);font-size:34px}
.bgm-gate-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:22px}
.bgm-controls{position:fixed;right:14px;bottom:14px;z-index:900;display:grid;grid-template-columns:42px minmax(110px,1fr) 90px;align-items:center;gap:10px;padding:9px 12px;border:1px solid rgba(232,199,123,.6);border-radius:16px;background:rgba(5,20,42,.92);box-shadow:0 10px 30px rgba(0,0,0,.32);backdrop-filter:blur(8px)}
.bgm-toggle{width:38px;height:38px;border:1px solid var(--gold);border-radius:50%;background:#102b52;color:var(--cream);font-size:17px;cursor:pointer}
.bgm-now{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.bgm-caption{font-size:10px;letter-spacing:.15em;color:var(--gold)}
.bgm-now strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--cream);font-size:13px}
.bgm-controls input[type=range]{width:90px;accent-color:var(--gold)}
@media(max-width:620px){.bgm-controls{left:12px;right:12px;bottom:10px;grid-template-columns:40px 1fr 82px}.bgm-controls input[type=range]{width:82px}.footer{padding-bottom:86px}.player-shell{padding-bottom:115px}}