:root{
  --bg:#0b0d12;--bg2:#12151d;--card:#161a24;--card2:#1c2130;--line:#262c3d;
  --text:#e8eaf2;--muted:#9aa3b8;--accent:#7c5cff;--accent2:#22c55e;--warn:#f59e0b;--danger:#ef4444;
  --gctu:#38bdf8;--gda:#f472b6;--omc:#facc15;--review:#a3a3a3;
  --radius:16px;--shadow:0 6px 24px rgba(0,0,0,.25);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#f5f6fa;--bg2:#eceef5;--card:#ffffff;--card2:#f1f3f9;--line:#dde1ec;--text:#141824;--muted:#5b6478;
  --shadow:0 6px 20px rgba(20,24,36,.08);color-scheme:light;
}
@media (prefers-color-scheme: light){
  :root[data-theme="auto"]{--bg:#f5f6fa;--bg2:#eceef5;--card:#ffffff;--card2:#f1f3f9;--line:#dde1ec;--text:#141824;--muted:#5b6478;--shadow:0 6px 20px rgba(20,24,36,.08);color-scheme:light}
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--accent)}
h1,h2,h3{line-height:1.25;margin:.2em 0 .5em}
h1{font-size:1.5rem}h2{font-size:1.2rem}h3{font-size:1.05rem}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{font-weight:800;font-size:1.1rem;color:var(--text);text-decoration:none;letter-spacing:.2px}
.logo{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent2));margin-right:6px}
.top-actions{display:flex;gap:8px;align-items:center}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--card);border:1px solid var(--line);color:var(--text);text-decoration:none;font-size:1.1rem}
main{max-width:860px;margin:0 auto;padding:16px 16px calc(96px + env(safe-area-inset-bottom));outline:none}
.tabbar{position:fixed;bottom:0;left:0;right:0;z-index:20;display:flex;justify-content:space-around;background:color-mix(in srgb,var(--bg2) 92%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
.tabbar a{position:relative;flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;font-size:.72rem;color:var(--muted);text-decoration:none;padding:4px 0;border-radius:10px}
.tabbar a span{font-size:1.25rem}
.tabbar a.active{color:var(--text);background:var(--card)}
.badge{position:absolute;top:0;right:calc(50% - 22px);min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--danger);color:#fff;font-size:.68rem;display:grid;place-items:center}
@media (min-width:900px){.tabbar{top:64px;bottom:auto;left:16px;right:auto;flex-direction:column;width:96px;border:1px solid var(--line);border-radius:var(--radius);padding:8px;gap:4px}main{padding-left:130px;max-width:1000px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:0 0 14px;box-shadow:var(--shadow)}
.card.hero{background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 22%,var(--card)),var(--card) 60%)}
.card.alert{border-color:color-mix(in srgb,var(--danger) 60%,var(--line));background:linear-gradient(135deg,color-mix(in srgb,var(--danger) 18%,var(--card)),var(--card) 65%)}
.card.good{border-color:color-mix(in srgb,var(--accent2) 50%,var(--line))}
.muted{color:var(--muted)}.small{font-size:.85rem}.tiny{font-size:.75rem}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.stat{background:var(--card2);border-radius:12px;padding:10px;text-align:center}
.stat b{display:block;font-size:1.5rem}
.btn{appearance:none;border:1px solid var(--line);background:var(--card2);color:var(--text);padding:10px 14px;border-radius:12px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px;min-height:42px}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.green{background:var(--accent2);border-color:var(--accent2);color:#06130a}
.btn.danger{color:var(--danger)}
.btn.big{width:100%;justify-content:center;font-size:1.05rem;padding:14px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.pill{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-weight:700;font-size:.85rem}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.72rem;font-weight:700;border:1px solid currentColor}
.t-gctu{color:var(--gctu)}.t-gda{color:var(--gda)}.t-omc{color:var(--omc)}.t-review{color:var(--review)}
.t-coach{color:var(--accent)}.t-opportunity{color:var(--accent2)}.t-news{color:var(--gctu)}
.progress{height:8px;background:var(--card2);border-radius:99px;overflow:hidden}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:99px;transition:width .3s}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 12px}
.chip{border:1px solid var(--line);background:var(--card);color:var(--muted);padding:6px 12px;border-radius:999px;cursor:pointer;font:inherit;font-size:.85rem}
.chip.on{color:var(--text);border-color:var(--accent);background:color-mix(in srgb,var(--accent) 18%,var(--card))}
.night{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--line)}
.night:first-child{border-top:0}
.night input[type=checkbox]{width:22px;height:22px;margin-top:2px;accent-color:var(--accent2);flex:none}
.night.done .ntopic{text-decoration:line-through;color:var(--muted)}
.night.current{background:color-mix(in srgb,var(--accent) 10%,transparent);border-radius:10px;padding-left:6px}
details.week{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin:0 0 10px;overflow:hidden}
details.week>summary{list-style:none;cursor:pointer;padding:14px 16px}
details.week>summary::-webkit-details-marker{display:none}
details.week .body{padding:0 16px 12px}
.block{display:flex;border-radius:10px;overflow:hidden;margin:10px 0;font-size:.78rem;font-weight:700;text-align:center}
.block div{padding:6px 4px}
.block .b1{flex:10;background:color-mix(in srgb,var(--gctu) 30%,var(--card2))}
.block .b2{flex:40;background:color-mix(in srgb,var(--accent) 35%,var(--card2))}
.block .b3{flex:10;background:color-mix(in srgb,var(--accent2) 30%,var(--card2))}
.timer{font:800 2.6rem/1 var(--mono);letter-spacing:1px;text-align:center;margin:8px 0}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:10px 10px 10px 46px;margin:0 0 8px;background:var(--card2);border-radius:12px}
.steps li::before{content:counter(s);position:absolute;left:10px;top:9px;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.85rem}
.steps li.hidden{display:none}
.video{display:flex;gap:10px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:12px;margin:0 0 8px;text-decoration:none;color:var(--text);background:var(--card2)}
.video img{width:120px;aspect-ratio:16/9;object-fit:cover;border-radius:8px;flex:none;background:#000}
.embed{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;margin:0 0 10px;background:#000}
.embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.editor{width:100%;min-height:220px;resize:vertical;font:13px/1.5 var(--mono);color:var(--text);background:#0a0c10;border:1px solid var(--line);border-radius:12px;padding:12px;tab-size:4;white-space:pre;overflow:auto}
:root[data-theme="light"] .editor{background:#fbfcff}
.output{font:12.5px/1.5 var(--mono);white-space:pre-wrap;background:#06080b;color:#cfe3d2;border-radius:12px;padding:12px;margin-top:8px;max-height:420px;overflow:auto;border:1px solid var(--line)}
.output:empty{display:none}
.output .err{color:#fca5a5}.output .sys{color:#93c5fd}
.output img{max-width:100%;background:#fff;border-radius:8px;margin-top:6px}
pre.code{font:12.5px/1.5 var(--mono);background:#0a0c10;color:#e5e7eb;padding:12px;border-radius:12px;overflow:auto;border:1px solid var(--line)}
.inbox-item{position:relative}
.inbox-item.unread::before{content:"";position:absolute;left:-1px;top:16px;bottom:16px;width:4px;border-radius:4px;background:var(--accent)}
.bubble{background:var(--card2);border-radius:14px 14px 14px 4px;padding:10px 12px;margin:0 0 6px;white-space:pre-wrap;word-break:break-word}
.note{border-left:3px solid var(--accent)}
.note.answered{opacity:.65;border-left-color:var(--accent2)}
textarea,input,select{font:inherit;color:var(--text);background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
textarea{width:100%;min-height:90px;resize:vertical}
label{display:block;font-weight:600;margin:10px 0 6px}
.field{margin-bottom:12px}
.toast{position:fixed;left:50%;bottom:calc(90px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--bg);padding:10px 16px;border-radius:12px;font-weight:600;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.week-dots{display:flex;gap:6px;margin-top:8px}
.week-dots i{width:100%;height:10px;border-radius:4px;background:var(--card2)}
.week-dots i.on{background:var(--accent2)}.week-dots i.miss{background:color-mix(in srgb,var(--danger) 60%,var(--card2))}.week-dots i.today{outline:2px solid var(--accent)}
kbd{font:12px var(--mono);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 5px}
ul.clean{padding-left:18px;margin:6px 0}