:root{
  --bg:#080d12;
  --panel:#101820;
  --panel2:#0d141b;
  --line:#25313b;
  --text:#eef2f4;
  --muted:#8e9aa4;
  --red:#b51f24;
  --cyan:#89aeba;
  --paper:#d7d2c6;
}
*{box-sizing:border-box}
html{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
body{margin:0;min-height:100vh;background:
  radial-gradient(circle at 50% 0%,rgba(72,102,116,.12),transparent 35%),
  linear-gradient(#0a1016,#070b0f);
}
button{font:inherit;color:inherit}
.noise{position:fixed;inset:0;pointer-events:none;z-index:50;opacity:.09;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.12) 0,rgba(255,255,255,.12) 1px,transparent 1px,transparent 4px)}
.hidden{display:none!important}
.boot{position:fixed;inset:0;background:#05080b;z-index:100;display:grid;place-items:center;padding:28px}
.boot-inner{width:min(520px,100%)}
.brand-mini{font-size:14px;letter-spacing:.08em;color:#b9c2c8}.brand-mini span{display:inline-block;height:16px;border-left:1px solid #6c777e;margin:0 10px;vertical-align:middle}
.boot-title{font-size:28px;margin-top:18px;font-weight:650;letter-spacing:.08em}.boot-log{margin-top:14px;color:#6f828e;font-family:ui-monospace,monospace;font-size:13px}
.app{width:min(760px,100%);margin:0 auto;min-height:100vh;padding-bottom:76px}
.topbar{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;background:rgba(8,13,18,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(106,133,146,.18)}
.brand{border:0;background:none;display:flex;align-items:center;padding:0;text-align:left}
.brand-wy{font-size:23px;font-weight:500;letter-spacing:-.05em}.brand-divider{height:28px;border-left:1px solid #74838c;margin:0 10px}.brand-cn{font-size:12px;line-height:1.2;color:#dce2e5}
.system-state{font-size:12px;color:#9ba7af;display:flex;align-items:center;gap:7px}.dot{width:7px;height:7px;background:var(--red);border-radius:50%;box-shadow:0 0 10px rgba(181,31,36,.7)}
.view{display:none;padding:22px 18px 8px}.view.active{display:block}
.hero{padding:30px 4px 22px}.eyebrow{font:12px ui-monospace,monospace;color:#7e929e;letter-spacing:.12em;margin:0 0 10px}.hero h1{margin:0;font-size:42px;letter-spacing:.08em;font-weight:620}.hero-meta{display:flex;gap:18px;margin-top:14px;color:#84939c;font-size:12px}
.alert-card,.record-card,.system-message,.observation{background:linear-gradient(180deg,rgba(18,28,36,.94),rgba(12,19,25,.96));border:1px solid var(--line);border-radius:4px}
.alert-card{padding:20px;margin-bottom:18px;position:relative;overflow:hidden}.alert-card:before{content:"";position:absolute;left:0;top:0;width:3px;height:100%;background:var(--red)}
.alert-head{display:flex;align-items:center;gap:8px;color:#7f8f99;font:12px ui-monospace,monospace}.alert-head time{margin-left:auto}.alert-dot{width:7px;height:7px;background:var(--red);border-radius:50%}
.alert-card h2{font-size:24px;margin:18px 0 8px}.alert-card p{color:#aab5bb;line-height:1.7;margin:0 0 18px;font-size:14px}
.primary,.secondary,.ghost,.back{border:0;cursor:pointer}
.primary{width:100%;padding:14px 16px;background:#e5eaed;color:#111;font-weight:650;border-radius:3px;letter-spacing:.04em}
.secondary{width:100%;padding:13px 16px;background:#16212a;border:1px solid #31414c;border-radius:3px;margin:12px 0;color:#dce5e9}
.module-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.module{min-height:116px;padding:14px;text-align:left;border:1px solid var(--line);border-radius:3px;background:#0d151c;position:relative}
.module.unlocked{cursor:pointer}.module.unlocked:hover{border-color:#536b78}.module.locked{opacity:.42;cursor:not-allowed}
.module-index{font:11px ui-monospace,monospace;color:#6c7e89}.module strong{display:block;margin-top:22px;font-size:16px}.module small{display:block;margin-top:6px;color:#71818b;font-size:11px}
.footer-note{margin:18px 0 0;padding:14px 2px;display:flex;justify-content:space-between;color:#72838d;font:12px ui-monospace,monospace}.footer-note b{color:#b8c4ca}
.back{background:none;color:#7e909a;padding:4px 0 16px;font-size:13px}
.case-head{padding:8px 0 20px}.case-label{display:inline-block;background:var(--red);padding:6px 9px;font:12px ui-monospace,monospace;letter-spacing:.12em}.case-head h1{font-size:38px;margin:12px 0 7px;letter-spacing:.08em}.case-head p{color:#7c8d97;margin:0;font:12px ui-monospace,monospace}
.record-card{padding:10px 16px;margin-bottom:24px}.record-row{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid rgba(100,120,132,.18);font-size:13px}.record-row:last-child{border:0}.record-row span{color:#71828c}.record-row b{font-weight:500}.danger{color:#dc6c70!important}
.section-title{color:#82949f;font:12px ui-monospace,monospace;letter-spacing:.12em;margin:20px 0 8px}.body-copy{line-height:1.8;color:#c0c9ce;font-size:14px;margin:0 0 16px}
.system-message,.observation{padding:15px;margin:14px 0}.system-message span,.observation span{font:11px ui-monospace,monospace;color:#a9474b;letter-spacing:.12em}.system-message p,.observation p{margin:8px 0 0;line-height:1.6;color:#aeb9bf;font-size:13px}
.video-shell{position:relative;border:1px solid #26343d;background:#020406;overflow:hidden}.video-shell video{display:block;width:100%;max-height:70vh;background:#000}.scanline{pointer-events:none;position:absolute;inset:0;background:repeating-linear-gradient(0deg,transparent 0,transparent 3px,rgba(255,255,255,.035) 4px);mix-blend-mode:screen}
.puzzle{display:grid;grid-template-columns:1fr 1fr;aspect-ratio:1200/840;gap:3px;background:#05080a;border:1px solid #2c3942;padding:3px;margin-top:16px}
.tile{position:relative;background-image:url("assets/ev01_label.png");background-size:200% 200%;cursor:pointer;border:1px solid rgba(255,255,255,.06);transition:transform .12s,box-shadow .12s}
.tile.selected{box-shadow:inset 0 0 0 3px var(--red);transform:scale(.985)}
.tile[data-piece="0"]{background-position:0 0}.tile[data-piece="1"]{background-position:100% 0}.tile[data-piece="2"]{background-position:0 100%}.tile[data-piece="3"]{background-position:100% 100%}
.puzzle-controls{display:flex;gap:8px;margin:10px 0 0}.ghost{flex:1;padding:11px;border:1px solid #2b3942;background:#0d151b;color:#8799a3;border-radius:3px}.hint-text{min-height:35px;padding:10px 2px;color:#8fa0aa;font-size:12px;line-height:1.6}
.resolved-banner{margin:20px 0 12px;padding:9px 12px;background:#1b242a;border-left:3px solid #7ba1ad;font:12px ui-monospace,monospace;color:#b7c7cd}.resolved img{width:100%;display:block;border:1px solid #394248}
.connection{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:16px 0;padding:14px;border:1px solid #2a3740;background:#0c1318}.connection div:not(.arrow){text-align:center}.connection span{display:block;color:#70828c;font-size:11px}.connection b{font:26px ui-monospace,monospace}.arrow{color:#647782}
.question{font-size:18px;line-height:1.6;margin:24px 0;color:#e2e7e9}.update-log{border-top:1px solid #27343c;padding:16px 0 20px}.update-log span{color:#8da0aa;font:11px ui-monospace,monospace}.update-log p{color:#b7c2c8;font-size:13px}
.toast{position:fixed;left:50%;bottom:72px;transform:translateX(-50%) translateY(18px);opacity:0;background:#dfe5e8;color:#12181c;padding:11px 16px;border-radius:3px;font-size:12px;transition:.2s;z-index:60;white-space:nowrap}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
footer{position:fixed;bottom:0;left:0;right:0;margin:auto;max-width:760px;display:flex;justify-content:space-between;padding:12px 18px calc(12px + env(safe-area-inset-bottom));background:rgba(7,11,15,.94);border-top:1px solid rgba(102,125,137,.16);font:9px ui-monospace,monospace;color:#53636d;letter-spacing:.08em}
@media(min-width:680px){.view{padding-left:28px;padding-right:28px}.module-grid{grid-template-columns:repeat(3,1fr)}}

/* v0.2 — CASE 02 investigation bridge */
.compact-record{margin-top:14px;margin-bottom:14px}
.anomaly-stack{display:grid;gap:10px;margin:14px 0}
.anomaly-item{padding:14px 15px;border:1px solid #2a3740;background:#0b1217}
.anomaly-item span{display:block;color:#a9474b;font:11px ui-monospace,monospace;letter-spacing:.12em}
.anomaly-item b{display:block;margin-top:8px;font-size:17px;letter-spacing:.02em}
.anomaly-item p{margin:6px 0 0;color:#85959e;font-size:12px;line-height:1.6}

/* v0.6 — CASE 02 / CASE 03 public archive update */
.case-list{display:grid;gap:10px;margin:4px 0 20px}
.case-list-item{width:100%;display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:16px;border:1px solid var(--line);background:linear-gradient(180deg,#101820,#0b1218);color:var(--text);text-align:left;cursor:pointer;border-radius:3px}
.case-list-item:hover{border-color:#526a77}.case-list-no{font:11px ui-monospace,monospace;color:#bd4a4e;letter-spacing:.08em}.case-list-item b{display:block;font-size:17px}.case-list-item small{display:block;margin-top:5px;color:#71828c;font:10px ui-monospace,monospace}.case-list-item em{font-style:normal;font:10px ui-monospace,monospace;color:#e0e7ea;border:1px solid #4e626d;padding:4px 6px}
.field-card{margin:16px 0 20px;padding:16px;border:1px solid #4a555b;background:linear-gradient(145deg,#c9c4b7,#aaa69b);color:#171a1b;box-shadow:0 10px 24px rgba(0,0,0,.22);position:relative;overflow:hidden}
.field-card:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;background:repeating-linear-gradient(0deg,rgba(0,0,0,.2) 0,rgba(0,0,0,.2) 1px,transparent 1px,transparent 4px)}
.field-card-top,.field-card-foot{display:flex;justify-content:space-between;align-items:center;font:12px ui-monospace,monospace;letter-spacing:.12em}.field-card-top b{font-size:30px;color:#8c1d21}.field-card-code{margin:12px 0;padding:8px 0;border-top:2px solid #222;border-bottom:1px solid #3b3b3b;font:16px ui-monospace,monospace}.field-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}.field-card-grid div{border:1px solid rgba(0,0,0,.28);padding:9px}.field-card-grid span{display:block;font-size:10px;color:#555}.field-card-grid b{display:block;margin-top:4px;font:12px ui-monospace,monospace}.field-card-note{font-size:12px;line-height:1.65;padding:10px 0;border-top:1px dashed rgba(0,0,0,.35)}.field-card-foot{padding-top:8px;border-top:1px solid rgba(0,0,0,.35)}
.audio-archive{border:1px solid #293740;background:#070b0e;margin-bottom:20px}.audio-archive>img{display:block;width:100%;max-height:72vh;object-fit:cover;object-position:top}.audio-player-wrap{padding:12px 14px 14px;background:#0b1116;border-top:1px solid #28353e}.audio-meta{display:flex;justify-content:space-between;margin-bottom:9px;color:#758792;font:10px ui-monospace,monospace;letter-spacing:.12em}.audio-player-wrap audio{display:block;width:100%;height:36px;filter:grayscale(1) contrast(1.1)}
.transcript{border:1px solid #27353d;background:#0b1217;padding:8px 14px;margin-bottom:16px}.transcript p{display:grid;grid-template-columns:52px 1fr;gap:8px;margin:0;padding:9px 0;border-bottom:1px solid rgba(100,120,132,.15);font-size:13px;color:#c1cbd0}.transcript p:last-child{border-bottom:0}.transcript span{font:10px ui-monospace,monospace;color:#687a84}
.clue-grid{display:grid;grid-template-columns:1fr;gap:10px;margin:12px 0 18px}.clue-card{padding:14px;border:1px solid #2b3942;background:#0d151b}.clue-card span{display:block;color:#a9474b;font:10px ui-monospace,monospace;letter-spacing:.1em}.clue-card b{display:block;margin-top:7px;font:23px ui-monospace,monospace}.clue-card p{margin:6px 0 0;color:#85959e;font-size:12px;line-height:1.55}.status-ok{color:#94b6a0!important}
footer{display:block;text-align:center;padding:9px 18px calc(9px + env(safe-area-inset-bottom));font-size:9px}
.footer-brand{display:flex;justify-content:space-between;color:#53636d;letter-spacing:.08em;margin-bottom:6px}.icp-link{color:#6f8089;text-decoration:none;letter-spacing:.02em}.icp-link:hover{color:#a5b2b9}
@media(min-width:680px){.clue-grid{grid-template-columns:repeat(3,1fr)}}


/* v0.7 — website asset refresh */
.case03-video-shell{margin-bottom:0}
.archive-player-wrap{padding:12px 14px 14px;background:#0b1116;border:1px solid #293740;border-top:0;margin-bottom:20px}
.player-note{margin:0;color:#83929b;font-size:12px;line-height:1.6}
.case02-card-gallery{display:grid;gap:14px;margin:16px 0 20px}
.archive-media-card{margin:0;border:1px solid #2b3942;background:#0b1116;padding:12px}
.archive-media-card figcaption{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;color:#8da0aa;font:11px ui-monospace,monospace;letter-spacing:.1em}
.archive-media-card figcaption b{font-size:12px;color:#e7ecef;letter-spacing:.16em}
.archive-media-card img{display:block;width:100%;height:auto;border:1px solid #36444d;background:#05080b}
@media(min-width:680px){.case02-card-gallery{grid-template-columns:1fr 1fr}}