:root{
  --blue:#1565c0; --blue-ink:#0d4f9e; --blue-deep:#0a3a75; --blue-night:#06224a;
  --red:#ce2029; --red-deep:#a3161d; --red-soft:#fdeeee;
  --sky:#eef4fb; --sky-2:#d9e6f6; --ink:#14202e; --muted:#5b6778; --line:#e1e8f0; --white:#fff; --page:#f6f9fc;
  --r-lg:24px; --r:16px; --r-sm:10px; --wrap:1360px;
  --head:"Montserrat",system-ui,sans-serif; --body:"Be Vietnam Pro",system-ui,sans-serif;
  --shadow:0 10px 30px rgba(10,58,117,.08); --shadow-lg:0 24px 60px rgba(10,58,117,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--ink);background:var(--page);line-height:1.6;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--head);line-height:1.15;letter-spacing:-.02em;color:var(--blue-deep)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
svg.i{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* Header */
header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid rgba(10,58,117,.08)}
header .wrap{display:flex;align-items:center;gap:22px;min-height:70px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--head);font-weight:800;font-size:19px;color:var(--blue-deep);letter-spacing:-.02em;white-space:nowrap}
.logo .mk{width:38px;height:38px;border-radius:12px;background:linear-gradient(150deg,var(--blue),var(--blue-deep));display:grid;place-items:center;color:#fff;position:relative}
.logo .mk::after{content:"";position:absolute;right:-3px;top:-3px;width:11px;height:11px;border-radius:50%;background:var(--red);border:2px solid #fff}
nav.main{display:flex;gap:2px}
nav.main a{display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;font-weight:600;font-size:14.5px;white-space:nowrap;transition:background .2s,color .2s}
nav.main a:hover{background:var(--sky);color:var(--blue-ink)}
nav.main a.on{background:var(--blue-deep);color:#fff}
.search{flex:1;max-width:420px;margin-left:auto;display:flex;align-items:center;gap:10px;background:var(--sky);border:1px solid transparent;border-radius:999px;padding:0 16px;height:44px;transition:border-color .2s,background .2s}
.search:focus-within{background:#fff;border-color:var(--blue)}
.search input{flex:1;min-width:0;border:0;background:transparent;font:500 14.5px var(--body);color:var(--ink);outline:none}
.search kbd{font:600 11px var(--body);color:var(--muted);border:1px solid var(--line);background:#fff;border-radius:6px;padding:1px 6px}
.search svg{color:var(--muted)}

/* Buttons & bits */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-weight:700;font-size:14.5px;padding:12px 20px;border-radius:999px;border:0;cursor:pointer;white-space:nowrap;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn .arr{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.22)}
.btn .arr svg{width:14px;height:14px}
.btn-red{background:var(--red);color:#fff;box-shadow:0 10px 24px rgba(206,32,41,.28)}
.btn-red:hover{background:var(--red-deep)}
.btn-ghost{background:#fff;color:var(--blue-deep);border:1px solid var(--line)}
.btn-ghost .arr{background:var(--sky)}
.btn-green{background:var(--blue);color:#fff}
.btn-green:hover{background:var(--blue-ink)}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-line:hover{background:#fff;color:var(--blue-deep)}
.btn-sm{padding:8px 14px;font-size:13.5px}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border-radius:999px;padding:5px 14px 5px 6px;font-size:13px;font-weight:600;color:var(--ink);box-shadow:var(--shadow)}
.pill b{background:var(--red);color:#fff;border-radius:999px;padding:1px 10px;font-size:12px}
.eyebrow{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--red)}
.bar{height:6px;border-radius:6px;background:var(--sky-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--blue),#3a8ee6)}
.bar.red i{background:linear-gradient(90deg,var(--red),#f0535a)}
.muted{color:var(--muted)}
.sec{padding:44px 0 8px}
.sec-h{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.sec-h h2{font-size:clamp(22px,2.2vw,30px);font-weight:800}
.sec-h h2 .n{color:var(--red)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;color:var(--ink);transition:.2s}
.chip small{font-size:12px;color:var(--muted);font-weight:600}
.chip:hover{border-color:var(--blue);color:var(--blue-ink)}
.chip.on{background:var(--blue-deep);border-color:var(--blue-deep);color:#fff}
.chip.on small{color:#bcd3ef}
select.sel{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font:600 13.5px var(--body);color:var(--ink);outline:none}

/* Hero */
.hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(800px 480px at 85% 20%,rgba(21,101,192,.6) 0%,rgba(21,101,192,0) 70%),linear-gradient(135deg,#0d4f9e 0%,#0a3a75 55%,#06224a 100%)}
.motif{position:absolute;right:-160px;top:-120px;width:720px;height:720px;opacity:.10;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;padding-top:52px;padding-bottom:92px;align-items:center}
.hero h1{font-size:clamp(32px,4vw,54px);font-weight:800;margin:18px 0 14px;color:#fff}
.hero h1 .hl{background:var(--red);padding:0 .18em;border-radius:.14em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.hero p.lead{font-size:17px;color:#d3e3f5;max-width:560px}
.hero .actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.resume{background:#fff;color:var(--ink);border-radius:28px;box-shadow:0 30px 70px rgba(0,0,0,.3);overflow:hidden}
.resume .cv{height:190px}
.resume .bd{padding:20px 22px 22px}
.resume h3{font-size:18px;margin:6px 0 4px}
.resume .now{display:flex;gap:12px;align-items:center;background:var(--sky);border-radius:var(--r);padding:12px 14px;margin:14px 0}
.resume .now .pl{width:40px;height:40px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;flex:none;box-shadow:0 0 0 6px rgba(206,32,41,.15)}
.resume .now b{display:block;font-size:14px;line-height:1.35}
.resume .now small{font-size:12.5px;color:var(--muted)}
.resume .row{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px}
.resume .row b{color:var(--blue-deep)}
.up{list-style:none;margin-top:14px;border-top:1px dashed var(--line);padding-top:10px}
.up li a{display:flex;gap:10px;align-items:center;padding:7px 4px;font-size:13.5px;border-radius:8px}
.up li a:hover{background:var(--sky)}
.up .k{width:24px;height:24px;border-radius:8px;background:var(--sky);color:var(--blue);display:grid;place-items:center;flex:none}
.up .k svg{width:13px;height:13px}
.up span.t{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Stats */
.stats{position:relative;z-index:5;margin-top:-52px}
.stats .wrap{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stat{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px 22px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.stat:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat .ic{width:42px;height:42px;border-radius:13px;background:var(--sky);color:var(--blue);display:grid;place-items:center;margin-bottom:14px}
.stat b{display:block;font-family:var(--head);font-weight:800;font-size:36px;line-height:1;color:var(--blue-deep);letter-spacing:-.03em}
.stat b sup{font-size:16px;color:var(--red);margin-left:3px;vertical-align:top;position:relative;top:3px}
.stat .lb{display:block;font-weight:600;font-size:14px;margin-top:8px}
.stat small{display:block;font-size:12.5px;color:var(--muted)}
.stat .bg{position:absolute;right:-10px;bottom:-24px;font-family:var(--head);font-weight:800;font-size:104px;line-height:1;color:var(--sky);pointer-events:none}
.stat > *:not(.bg){position:relative}
.stat.hot{background:linear-gradient(145deg,var(--red),var(--red-deep));border-color:transparent;color:#fff}
.stat.hot .ic{background:rgba(255,255,255,.18);color:#fff}
.stat.hot b,.stat.hot .lb{color:#fff}.stat.hot b sup{color:#ffd0d2}.stat.hot small{color:#ffd9db}.stat.hot .bg{color:rgba(255,255,255,.08)}

/* Course cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.cv{position:relative;height:150px;overflow:hidden;color:#fff;padding:14px 16px;display:flex;flex-direction:column;justify-content:space-between}
.cv .no{position:absolute;right:-8px;bottom:-30px;font-family:var(--head);font-weight:800;font-size:132px;line-height:1;color:rgba(255,255,255,.14);letter-spacing:-.05em}
.cv .rg{position:absolute;left:-60px;top:-80px;width:220px;height:220px;border-radius:50%;border:30px solid rgba(255,255,255,.07)}
.cv .tag{position:relative;align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:3px 10px}
.cv .meta{position:relative;display:flex;gap:14px;font-size:12.5px;font-weight:600;color:rgba(255,255,255,.9)}
.cv .meta span{display:flex;align-items:center;gap:5px}
.cv .meta svg{width:14px;height:14px}
.cv .done{position:absolute;right:14px;top:14px;background:#fff;color:var(--blue);border-radius:999px;font-size:11.5px;font-weight:700;padding:3px 10px;display:flex;gap:4px;align-items:center}
.cv .done svg{width:13px;height:13px}
.card .bd{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.card h3{font-family:var(--body);font-weight:700;font-size:15.5px;color:var(--ink);letter-spacing:0;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:43px}
.card:hover h3{color:var(--blue-ink)}
.card .who{font-size:13px;color:var(--muted);margin:4px 0 14px}
.card .pg{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;font-weight:700;color:var(--blue-deep)}
.card .pg .bar{flex:1}
.card .pg.zero{color:var(--muted);font-weight:600}
.c-agent{background:linear-gradient(145deg,#1565c0,#0a3a75)}
.c-fin{background:linear-gradient(145deg,#ce2029,#7d1016)}
.c-auto{background:linear-gradient(145deg,#0f7c93,#073c4a)}
.c-ai{background:linear-gradient(145deg,#2f7fd6,#0d3f7c)}
.c-edu{background:linear-gradient(145deg,#c26d0c,#7a3f06)}
.c-kid{background:linear-gradient(145deg,#5b4bb5,#2e2366)}
.c-etc{background:linear-gradient(145deg,#4a5668,#1f2733)}
.row-scroll{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,1fr);gap:18px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
.mini{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;transition:.25s}
.mini:hover{box-shadow:var(--shadow);border-color:transparent}
.mini .cv{width:86px;height:86px;border-radius:14px;flex:none;padding:0}
.mini .cv .no{font-size:64px;bottom:-12px;right:-4px}
.mini .cv .tag,.mini .cv .meta,.mini .cv .done{display:none}
.mini .x{flex:1;min-width:0}
.mini b{display:block;font-size:14px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini small{display:block;font-size:12px;color:var(--muted);margin:4px 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.empty{background:#fff;border:1px dashed var(--line);border-radius:20px;padding:36px;text-align:center;color:var(--muted)}

/* Course page */
.band{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#0d4f9e 0%,#0a3a75 60%,#06224a 100%)}
.band .wrap{position:relative;padding-top:30px;padding-bottom:40px}
.crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:#a9c4e6;margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.band h1{color:#fff;font-size:clamp(26px,3vw,40px);font-weight:800;max-width:900px;margin:10px 0 12px}
.band p{color:#d3e3f5;max-width:780px;font-size:15.5px}
.facts{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.facts span{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:#e2eefb;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:6px 12px}
.facts svg{width:15px;height:15px}
.band .actions{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.cols{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:26px;padding:30px 0 60px;align-items:start}
.box{background:#fff;border:1px solid var(--line);border-radius:20px}
.box-h{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line);gap:10px}
.box-h h3{font-size:17px}
.box-h .muted{font-size:13px}
.chap{border-bottom:1px solid var(--line)}
.chap:last-child{border-bottom:0}
.chap>button{width:100%;display:flex;align-items:center;gap:14px;padding:15px 22px;text-align:left}
.chap>button:hover{background:#fafcfe}
.chap .num{width:34px;height:34px;border-radius:11px;background:var(--sky);color:var(--blue-deep);display:grid;place-items:center;font:800 13px var(--head);flex:none}
.chap.full .num{background:var(--blue);color:#fff}
.chap .ct{flex:1;min-width:0}
.chap .ct b{display:block;font-size:14.5px;line-height:1.4}
.chap .ct small{font-size:12.5px;color:var(--muted)}
.chap .chev{transition:transform .2s;color:var(--muted)}
.chap.open .chev{transform:rotate(180deg)}
.chap ul{list-style:none;display:none;padding:0 14px 12px 70px}
.chap.open ul{display:block}
.les{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:12px;font-size:14px}
.les:hover{background:var(--sky)}
.les .ty{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;flex:none;background:var(--sky);color:var(--blue)}
.les .ty svg{width:14px;height:14px}
.les .ty.pdf{background:var(--red-soft);color:var(--red)}
.les .ty.quiz,.les .ty.text{background:#fff4e2;color:#b5650a}
.les .lt{flex:1;min-width:0}
.les .lt span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.les .lt small{font-size:12px;color:var(--muted)}
.les .d{font-size:12.5px;color:var(--muted);white-space:nowrap}
.tick{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;flex:none;color:transparent;transition:.15s}
.tick svg{width:12px;height:12px;stroke-width:3}
.tick.on{background:var(--blue);border-color:var(--blue);color:#fff}
.les.cur{background:var(--sky);box-shadow:inset 3px 0 0 var(--red)}
.ring-card{padding:22px;display:flex;gap:18px;align-items:center}
.ring{--p:0;width:92px;height:92px;border-radius:50%;flex:none;display:grid;place-items:center;background:conic-gradient(var(--blue) calc(var(--p)*1%),var(--sky-2) 0)}
.ring i{width:72px;height:72px;border-radius:50%;background:#fff;display:grid;place-items:center;font:800 20px var(--head);color:var(--blue-deep);font-style:normal}
.ring-card b{display:block;font-family:var(--head);font-size:16px;color:var(--blue-deep)}
.ring-card small{display:block;color:var(--muted);font-size:13px;line-height:1.5}
.aside{display:flex;flex-direction:column;gap:18px;position:sticky;top:90px}
.files{list-style:none;padding:8px 10px 12px}
.fl{display:flex;gap:12px;align-items:center;padding:9px 10px;border-radius:12px;font-size:13.5px}
.fl:hover{background:var(--sky)}
.fx{width:36px;height:40px;border-radius:8px;display:grid;place-items:center;font:800 9.5px var(--head);color:#fff;flex:none;letter-spacing:.02em;position:relative}
.fx::after{content:"";position:absolute;right:0;top:0;border-style:solid;border-width:0 9px 9px 0;border-color:transparent var(--page) rgba(0,0,0,.18) transparent}
.fx.pdf{background:var(--red)}.fx.docx,.fx.doc{background:#2b5fb4}.fx.xlsx,.fx.csv{background:#1d7a46}.fx.pptx{background:#c2540a}.fx.md,.fx.json,.fx.txt{background:#4a5668}.fx.mp4,.fx.mov{background:var(--blue-deep)}.fx.zip{background:#7a5a0a}
.fl .ft{flex:1;min-width:0}
.fl .ft span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.fl .ft small{font-size:12px;color:var(--muted)}
.path{margin:0 22px 18px;display:flex;align-items:center;gap:8px;background:var(--page);border:1px dashed var(--line);border-radius:12px;padding:9px 12px;font:500 12px ui-monospace,Consolas,monospace;color:var(--muted);word-break:break-all}

/* Player */
.player{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:24px;padding:22px 0 60px;align-items:start}
.stage{position:relative;aspect-ratio:16/9;border-radius:22px;overflow:hidden;background:radial-gradient(600px 300px at 70% 20%,rgba(21,101,192,.35),transparent 70%),#06111f;display:grid;place-items:center;color:#fff;box-shadow:var(--shadow-lg)}
.stage .big{width:84px;height:84px;border-radius:50%;background:var(--red);display:grid;place-items:center;box-shadow:0 0 0 14px rgba(206,32,41,.22);transition:transform .2s}
.stage .big:hover{transform:scale(1.06)}
.stage .big svg{width:30px;height:30px;fill:#fff;stroke:none;margin-left:4px}
.stage .cap{position:absolute;left:0;right:0;bottom:0;padding:16px 20px;background:linear-gradient(transparent,rgba(0,0,0,.65));font-size:12.5px;color:#cddcf0;display:flex;justify-content:space-between;gap:12px}
.stage .cap code{font-family:ui-monospace,Consolas,monospace;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stage .ctrl{position:absolute;left:20px;right:20px;bottom:44px;display:flex;align-items:center;gap:12px;font-size:12px;color:#fff}
.stage .ctrl .bar{flex:1;height:4px;background:rgba(255,255,255,.2)}
.stage .ctrl .bar i{background:var(--red)}
.stage.doc{background:linear-gradient(160deg,#fff,#eff4fa);color:var(--ink)}
.paper{width:min(62%,420px);aspect-ratio:3/4;max-height:86%;background:#fff;border-radius:6px;box-shadow:0 20px 50px rgba(10,58,117,.2);padding:28px 26px;display:flex;flex-direction:column;gap:10px}
.paper i{display:block;height:9px;border-radius:5px;background:var(--sky-2)}
.paper i.h{height:16px;width:70%;background:var(--blue);opacity:.8;margin-bottom:8px}
.stage.none{background:repeating-linear-gradient(135deg,#f2f6fb 0 14px,#ebf1f8 14px 28px);color:var(--muted);text-align:center;padding:30px}
.ph{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin:20px 0 6px;flex-wrap:wrap}
.ph h1{font-size:clamp(20px,2vw,26px);font-weight:800}
.ph .eyebrow{margin-bottom:6px;display:block}
.nav-l{display:flex;gap:8px;flex-wrap:wrap}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:22px 0 0}
.tabs button{padding:12px 16px;font-weight:700;font-size:14px;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-1px;display:flex;gap:8px;align-items:center}
.tabs button.on{color:var(--blue-deep);border-color:var(--red)}
.tabs button em{font-style:normal;font-size:11.5px;background:var(--sky);color:var(--blue-ink);border-radius:999px;padding:0 8px}
.pane{background:#fff;border:1px solid var(--line);border-top:0;border-radius:0 0 20px 20px;padding:18px}
.note textarea{width:100%;min-height:150px;border:1px solid var(--line);border-radius:14px;padding:14px;font:15px/1.6 var(--body);color:var(--ink);resize:vertical;outline:none;background:var(--page)}
.note textarea:focus{border-color:var(--blue);background:#fff}
.note .nb{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:12.5px;color:var(--muted);gap:10px;flex-wrap:wrap}
.side{position:sticky;top:88px}
.side .box-h{flex-direction:column;align-items:stretch}
.side .box-h a{font-weight:700;font-size:15px;color:var(--blue-deep);line-height:1.35}
.side .box-h a:hover{color:var(--red)}
.side .scroll{max-height:calc(100vh - 250px);overflow:auto;padding:6px 8px 10px;scrollbar-width:thin}
.side .cg{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:12px 10px 4px;display:flex;justify-content:space-between;gap:8px}
.side .cg span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side .les{padding:8px}
.side .les .lt span{white-space:normal;line-height:1.35;font-size:13.5px}
.side .tabs button{padding:12px 10px;white-space:nowrap;font-size:13.5px}

/* Docs table */
.tbl{width:100%;border-collapse:collapse}
.tbl td{padding:10px 14px;border-top:1px solid var(--line);font-size:14px;vertical-align:middle}
.tbl tr:first-child td{border-top:0}
.tbl tr:hover td{background:#fafcfe}
.tbl .fname{display:flex;gap:12px;align-items:center}
.tbl .fname span{font-weight:600;line-height:1.4}
.tbl a.lk{color:var(--blue-ink);font-weight:600}
.tbl a.lk:hover{color:var(--red)}
.tbl .r{text-align:right;white-space:nowrap;color:var(--muted);font-size:13px}
.toolbar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.nitem{padding:18px 22px;border-top:1px solid var(--line)}
.nitem:first-child{border-top:0}
.nitem a{font-weight:700;color:var(--blue-deep)}
.nitem a:hover{color:var(--red)}
.nitem small{display:block;color:var(--muted);font-size:12.5px;margin-bottom:6px}
.nitem p{white-space:pre-wrap;font-size:14.5px}
mark{background:#ffe7a3;border-radius:3px;padding:0 2px}

footer{border-top:1px solid var(--line);padding:22px 0 90px;color:var(--muted);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.tabbar{display:none}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;background:var(--blue-night);color:#fff;padding:10px 18px;border-radius:999px;font-size:13.5px;font-weight:600;transition:.25s;z-index:60;pointer-events:none}
.toast.on{opacity:1;transform:translate(-50%,0)}


/* Books */
.bgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:26px 20px}
.book{display:flex;flex-direction:column;gap:10px}
.book .bt{font-weight:700;font-size:14px;line-height:1.4;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.book:hover .bt{color:var(--blue-ink)}
.book .bm{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);font-weight:600}
.book .bm .bar{flex:1;height:4px}
.book .bm.rd{color:var(--blue-deep)}
.book .bm svg{width:14px;height:14px}
.bk{position:relative;aspect-ratio:3/4;border-radius:6px 14px 14px 6px;overflow:hidden;color:#fff;padding:16px 14px 14px 20px;display:flex;flex-direction:column;box-shadow:0 12px 26px rgba(10,58,117,.18),inset 6px 0 0 rgba(0,0,0,.18),inset 8px 0 0 rgba(255,255,255,.12);transition:transform .25s,box-shadow .25s}
.book:hover .bk{transform:translateY(-5px) rotate(-.6deg);box-shadow:0 22px 40px rgba(10,58,117,.26),inset 6px 0 0 rgba(0,0,0,.18),inset 8px 0 0 rgba(255,255,255,.12)}
.bk::before{content:"";position:absolute;right:-50px;bottom:-50px;width:160px;height:160px;border-radius:50%;border:26px solid rgba(255,255,255,.08)}
.bk .sh{position:relative;font-size:9.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;opacity:.85}
.bk .ln{position:relative;width:26px;height:3px;background:var(--red);border-radius:2px;margin:10px 0}
.bk b{position:relative;font-family:var(--head);font-weight:800;font-size:15px;line-height:1.22;letter-spacing:-.01em;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.bk .ft{position:relative;margin-top:auto;display:flex;justify-content:space-between;font-size:10.5px;font-weight:600;opacity:.85}
.bk .rib{position:absolute;right:14px;top:0;width:16px;height:26px;background:var(--red);clip-path:polygon(0 0,100% 0,100% 100%,50% 75%,0 100%)}
.b-claude{background:linear-gradient(150deg,#1565c0,#0a3a75)}
.b-agent{background:linear-gradient(150deg,#243b6b,#0f1d3a)}
.b-lead{background:linear-gradient(150deg,#8a6a2b,#4a3610)}
.b-code{background:linear-gradient(150deg,#0f7c93,#073c4a)}
.b-google{background:linear-gradient(150deg,#3a8ee6,#1553a0)}
.b-ind{background:linear-gradient(150deg,#5b4bb5,#2e2366)}
.b-etc{background:linear-gradient(150deg,#4a5668,#1f2733)}
.shelf{margin-bottom:38px}
.shelf h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.shelf h3 small{font:600 12.5px var(--body);color:var(--muted)}
.shelf h3 .dot{width:12px;height:12px;border-radius:4px}
.rowb{display:grid;grid-auto-flow:column;grid-auto-columns:150px;gap:20px;overflow-x:auto;padding:6px 2px 10px;scrollbar-width:thin}
/* Reader */
.reader{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;padding:20px 0 60px;align-items:start}
.rbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:18px 18px 0 0;padding:10px 12px}
.rbar .ttl{flex:1;min-width:160px;font-weight:700;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--blue-deep)}
.rbtn{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line);background:#fff;color:var(--ink);transition:.15s}
.rbtn:hover{background:var(--sky);color:var(--blue-ink)}
.rbtn.on{background:var(--red);border-color:var(--red);color:#fff}
.rbtn:disabled{opacity:.35;pointer-events:none}
.pgbox{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);font-weight:600}
.pgbox input{width:58px;height:38px;border:1px solid var(--line);border-radius:12px;text-align:center;font:700 14px var(--body);color:var(--ink);outline:none}
.pgbox input:focus{border-color:var(--blue)}
.zm{font-size:12.5px;font-weight:700;color:var(--muted);min-width:44px;text-align:center}
.sep{width:1px;height:26px;background:var(--line)}
.canvas{background:#2b3442;padding:34px 20px;display:flex;justify-content:center;min-height:620px;overflow:auto}
.pgp{width:calc(560px * var(--z,1));max-width:100%;aspect-ratio:1/1.414;background:#fff;border-radius:3px;box-shadow:0 20px 50px rgba(0,0,0,.45);padding:calc(48px * var(--z,1)) calc(46px * var(--z,1));display:flex;flex-direction:column;gap:calc(10px * var(--z,1));position:relative;flex:none}
.pgp .hd{display:flex;justify-content:space-between;font-size:10px;color:#8a95a5;border-bottom:1px solid #e8edf3;padding-bottom:8px;margin-bottom:8px}
.pgp .hd span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:70%}
.pgp i{display:block;height:calc(8px * var(--z,1));border-radius:4px;background:#e6ecf3;flex:none}
.pgp i.h{height:calc(15px * var(--z,1));background:var(--blue);opacity:.75;margin:10px 0 6px}
.pgp .fig{height:22%;border-radius:8px;background:linear-gradient(135deg,var(--sky),var(--sky-2));margin:6px 0;flex:none}
.pgp .no{position:absolute;bottom:18px;left:0;right:0;text-align:center;font-size:10.5px;color:#8a95a5}
.pgp.cover{justify-content:center;color:#fff;padding:12%}
.pgp.cover b{font-family:var(--head);font-weight:800;font-size:calc(26px * var(--z,1));line-height:1.2;position:relative}
.pgp.cover p{position:relative;opacity:.85;font-size:calc(14px * var(--z,1));margin-top:14px}
.slider{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-top:0;border-radius:0 0 18px 18px;padding:12px 16px;font-size:12.5px;color:var(--muted);font-weight:600}
.slider input{flex:1;accent-color:var(--red)}
.marks{list-style:none}
.marks a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:12px;font-size:14px}
.marks a:hover{background:var(--sky)}
.marks .pn{min-width:54px;font:800 12px var(--head);color:#fff;background:var(--red);border-radius:8px;padding:4px 8px;text-align:center;flex:none}
.marks small{color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kv{display:grid;grid-template-columns:90px 1fr;gap:8px 12px;font-size:13.5px}
.kv dt{color:var(--muted)}
.kv dd{font-weight:600;word-break:break-word}
.warn{background:#fff6e5;border:1px solid #f3dca6;color:#7a5306;border-radius:12px;padding:10px 12px;font-size:13px;margin-top:14px}


/* Account menu */
.me{position:relative}
.av{width:42px;height:42px;border-radius:50%;background:linear-gradient(150deg,var(--blue),var(--blue-deep));color:#fff;display:grid;place-items:center;box-shadow:0 0 0 3px #fff,0 0 0 4px var(--line)}
.menu{position:absolute;right:0;top:calc(100% + 12px);width:240px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;z-index:50}
.me.open .menu{opacity:1;visibility:visible;transform:none}
.menu .who{padding:10px 12px 12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.menu .who b{display:block;font-size:14px}
.menu .who small{color:var(--muted);font-size:12.5px}
.menu a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r-sm);font-size:14px;font-weight:600}
.menu a:hover{background:var(--sky);color:var(--blue-ink)}
.menu a.out{color:var(--red)}
.menu a.out:hover{background:var(--red-soft);color:var(--red-deep)}
/* Auth */
body.auth header,body.auth footer,body.auth .tabbar{display:none}
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
.auth-art{position:relative;overflow:hidden;color:#fff;padding:48px 56px;display:flex;flex-direction:column;background:radial-gradient(700px 460px at 80% 20%,rgba(21,101,192,.65) 0%,rgba(21,101,192,0) 70%),linear-gradient(135deg,#0d4f9e 0%,#0a3a75 55%,#06224a 100%)}
.auth-art .motif{right:-200px;top:auto;bottom:-220px;width:760px;height:760px}
.auth-art .logo{color:#fff;position:relative}
.auth-art .logo .mk{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25)}
.auth-art .logo .mk::after{border-color:#0d4f9e}
.auth-art .mid{position:relative;margin:auto 0;max-width:520px}
.auth-art h1{color:#fff;font-size:clamp(30px,3.4vw,48px);font-weight:800;margin:18px 0 14px}
.auth-art h1 .hl{background:var(--red);padding:0 .16em;border-radius:.14em}
.auth-art p{color:#d3e3f5;font-size:16.5px}
.auth-art .chips2{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.auth-art .chips2 span{font-size:13px;font-weight:600;color:#e2eefb;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:6px 12px}
.auth-art .foot{position:relative;font-size:12.5px;color:#a9c4e6}
.auth-form{display:flex;align-items:center;justify-content:center;padding:40px 24px;background:var(--page)}
.auth-card{width:100%;max-width:420px}
.auth-card h2{font-size:28px;font-weight:800;margin:10px 0 6px}
.auth-card>p{color:var(--muted);margin-bottom:26px}
.fld{margin-bottom:16px}
.fld label{display:flex;justify-content:space-between;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:7px}
.fld label a{color:var(--blue-ink);font-weight:600}
.fld label a:hover{color:var(--red)}
.inp{display:flex;align-items:center;gap:10px;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:0 14px;height:50px;transition:border-color .2s,box-shadow .2s}
.inp:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(21,101,192,.12)}
.inp.err{border-color:var(--red);box-shadow:0 0 0 4px rgba(206,32,41,.1)}
.inp svg{color:var(--muted)}
.inp input{flex:1;min-width:0;border:0;outline:none;background:transparent;font:500 15px var(--body);color:var(--ink)}
.inp .eye{color:var(--muted);font-size:12.5px;font-weight:700;padding:6px}
.inp .eye:hover{color:var(--blue-ink)}
.msg{font-size:13px;color:var(--red);margin-top:6px;display:none}
.msg.on{display:block}
.alert{display:none;gap:10px;align-items:flex-start;background:var(--red-soft);border:1px solid #f5c9cb;color:var(--red-deep);border-radius:12px;padding:11px 14px;font-size:13.5px;margin-bottom:16px}
.alert.on{display:flex}
.alert.ok{background:#e9f6ef;border-color:#bfe3cf;color:#17613b}
.chk{display:flex;align-items:center;gap:10px;font-size:14px;cursor:pointer;margin:4px 0 22px}
.chk input{width:18px;height:18px;accent-color:var(--blue)}
.btn-full{width:100%;justify-content:center;padding:15px 20px;font-size:15px}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(21,101,192,.25)}
.btn-blue:hover{background:var(--blue-ink)}
.auth-card .alt{text-align:center;font-size:13.5px;color:var(--muted);margin-top:22px}
.auth-card .alt a{color:var(--blue-ink);font-weight:700}
.meter{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:10px}
.meter i{height:5px;border-radius:5px;background:var(--line);transition:background .2s}
.meter[data-s="1"] i:nth-child(-n+1){background:var(--red)}
.meter[data-s="2"] i:nth-child(-n+2){background:#e08a00}
.meter[data-s="3"] i:nth-child(-n+3){background:#3a8ee6}
.meter[data-s="4"] i{background:var(--blue)}
.rules{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:6px 14px;margin-top:12px;font-size:13px;color:var(--muted)}
.rules li{display:flex;gap:7px;align-items:center}
.rules li svg{width:14px;height:14px;stroke-width:3;color:var(--line)}
.rules li.ok{color:var(--blue-deep)}
.rules li.ok svg{color:var(--blue)}
.acc{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:26px;padding:30px 0 60px;align-items:start}
.acc .box{padding:26px}
.acc h3{font-size:18px;margin-bottom:4px}
.acc .sub{color:var(--muted);font-size:14px;margin-bottom:22px}
.acc form{max-width:520px}
.sess{list-style:none}
.sess li{display:flex;gap:12px;align-items:center;padding:12px 0;border-top:1px solid var(--line);font-size:13.5px}
.sess li:first-child{border-top:0}
.sess .dv{width:38px;height:38px;border-radius:12px;background:var(--sky);color:var(--blue);display:grid;place-items:center;flex:none}
.sess b{display:block;font-size:14px}
.sess small{color:var(--muted)}
.sess .cur{margin-left:auto;font-size:11.5px;font-weight:700;color:var(--blue-ink);background:var(--sky);border-radius:999px;padding:2px 10px;white-space:nowrap}


/* Admin: add course / upload */
.addm{position:relative}
.addm .menu{width:260px}
.addm.open .menu{opacity:1;visibility:visible;transform:none}
.menu a small{display:block;font-weight:500;font-size:12px;color:var(--muted)}
.frm{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;padding:30px 0 60px;align-items:start}
.frm .box{padding:24px;margin-bottom:22px}
.frm h3{font-size:17px;margin-bottom:4px;display:flex;align-items:center;gap:10px}
.frm h3 .st{width:26px;height:26px;border-radius:50%;background:var(--blue-deep);color:#fff;display:grid;place-items:center;font:800 12px var(--head)}
.frm .sub{color:var(--muted);font-size:13.5px;margin-bottom:18px}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.inp.ta{height:auto;padding:12px 14px;align-items:flex-start}
.inp textarea,.inp select{flex:1;min-width:0;border:0;outline:none;background:transparent;font:500 15px/1.55 var(--body);color:var(--ink);resize:vertical}
.inp textarea{min-height:88px}
.hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.seg{display:inline-grid;grid-auto-flow:column;background:var(--sky);border-radius:14px;padding:4px;gap:4px;margin-bottom:18px}
.seg button{padding:9px 16px;border-radius:10px;font-weight:700;font-size:13.5px;color:var(--muted);display:flex;gap:8px;align-items:center}
.seg button.on{background:#fff;color:var(--blue-deep);box-shadow:0 2px 8px rgba(10,58,117,.1)}
.drop{border:2px dashed #b9cde6;border-radius:20px;background:linear-gradient(180deg,#fff,var(--sky));padding:34px 20px;text-align:center;cursor:pointer;transition:.2s;display:block}
.drop:hover,.drop.over{border-color:var(--blue);background:var(--sky);transform:translateY(-2px)}
.drop .dic{width:60px;height:60px;border-radius:18px;background:var(--blue);color:#fff;display:grid;place-items:center;margin:0 auto 14px;box-shadow:0 12px 24px rgba(21,101,192,.25)}
.drop .dic svg{width:26px;height:26px}
.drop b{display:block;font-family:var(--head);font-size:17px;color:var(--blue-deep)}
.drop span{font-size:13.5px;color:var(--muted)}
.drop u{color:var(--red);text-decoration:none;font-weight:700}
.drop input{display:none}
.scanrow{display:flex;gap:10px}
.scanrow .inp{flex:1}
.bld .ch{border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden}
.bld .chh{display:flex;gap:10px;align-items:center;padding:10px 12px;background:var(--sky)}
.bld .chh .num{width:30px;height:30px;border-radius:10px;background:var(--blue-deep);color:#fff;display:grid;place-items:center;font:800 12px var(--head);flex:none}
.bld input.t{flex:1;min-width:0;border:1px solid transparent;background:transparent;border-radius:10px;padding:7px 10px;font:700 14.5px var(--body);color:var(--ink);outline:none}
.bld input.t:hover{border-color:var(--line);background:#fff}
.bld input.t:focus{border-color:var(--blue);background:#fff}
.grip{color:#9fb0c5;cursor:grab;flex:none}
.xbtn{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:var(--muted);flex:none}
.xbtn:hover{background:var(--red-soft);color:var(--red)}
.bld .ls{display:flex;gap:10px;align-items:center;padding:8px 12px;border-top:1px solid var(--line)}
.bld .ls select{border:1px solid var(--line);border-radius:10px;padding:6px 8px;font:600 12.5px var(--body);color:var(--ink);background:#fff;outline:none}
.bld .ls input.t{font-weight:500;font-size:14px}
.bld .ls input.m{width:62px;border:1px solid var(--line);border-radius:10px;padding:6px 8px;font:600 13px var(--body);text-align:center;outline:none}
.fchip{display:inline-flex;align-items:center;gap:6px;max-width:190px;font-size:12px;font-weight:600;color:var(--blue-ink);background:var(--sky);border-radius:999px;padding:4px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:none}
.fchip.none{color:var(--muted);background:#f2f4f7}
.fchip svg{width:13px;height:13px}
.addrow{display:flex;gap:8px;padding:10px 12px;border-top:1px dashed var(--line)}
.linkbtn{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:13px;color:var(--blue-ink);padding:6px 10px;border-radius:10px}
.linkbtn:hover{background:var(--sky)}
.linkbtn svg{width:15px;height:15px}
.sum{position:sticky;top:90px}
.sum .box{padding:20px}
.sum .cvp{height:120px;border-radius:14px;margin-bottom:16px}
.sum .kv{margin:0 0 18px}
.sum .btn{width:100%;justify-content:center;margin-top:10px}
.q{list-style:none}
.qi{display:grid;grid-template-columns:auto minmax(0,1fr) 170px auto;gap:14px;align-items:center;padding:14px 0;border-top:1px solid var(--line)}
.qi:first-child{border-top:0}
.qi .nm input{width:100%;border:1px solid transparent;border-radius:10px;padding:6px 8px;font:700 14px var(--body);color:var(--ink);outline:none;background:transparent}
.qi .nm input:hover{border-color:var(--line)}
.qi .nm input:focus{border-color:var(--blue);background:#fff}
.qi .nm small{display:block;padding:0 8px;font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.qi .nm .bar{margin:6px 8px 0;height:4px}
.qi select{width:100%;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font:600 13px var(--body);background:#fff;color:var(--ink);outline:none}
.qi .dupw{display:inline-block;margin:4px 8px 0;font-size:11.5px;font-weight:700;color:#7a5306;background:#fff6e5;border-radius:999px;padding:1px 8px}
.qi .okw{display:inline-block;margin:4px 8px 0;font-size:11.5px;font-weight:700;color:#17613b;background:#e9f6ef;border-radius:999px;padding:1px 8px}
.qhead{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:22px 0 4px}

@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;padding-bottom:84px}
  .cols,.player,.reader,.acc,.frm{grid-template-columns:minmax(0,1fr)}
  .sum{position:static}
  .auth-wrap{grid-template-columns:minmax(0,1fr)}
  .auth-art{padding:28px 24px 34px}
  .auth-art .mid{margin:28px 0 8px}
  .auth-art .foot{display:none}
  .aside,.side{position:static}
  .side .scroll{max-height:420px}
  .stats .wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .wrap{padding:0 16px}
  nav.main,.search kbd{display:none}
  header .wrap{min-height:62px;gap:12px}
  .logo span{display:none}
  .search{max-width:none;height:40px;min-width:0;padding:0 12px}
  .search input{width:100%}
  .av{width:38px;height:38px}
  .rbar{gap:6px}
  .rbar .sep{display:none}
  .rbtn{width:34px;height:34px}
  .zm{min-width:36px}
  .pgbox input{width:48px;height:34px}
  .stage .cap{padding:10px 14px;font-size:11px}
  .stage .cap span{display:none}
  .stage .ctrl{left:14px;right:14px;bottom:34px}
  .stage .big{width:64px;height:64px}
  .hero .wrap{padding-top:30px;gap:28px}
  .hero p.lead{font-size:15.5px}
  .stat{padding:16px}.stat b{font-size:28px}.stat .bg{font-size:80px}
  .chap ul{padding-left:14px}
  .chap>button{padding:14px 16px}
  .tbl .hide-m{display:none}
  .addm .lbl{display:none}
  .g2{grid-template-columns:1fr}
  .qi{grid-template-columns:auto minmax(0,1fr) auto}
  .qi select{grid-column:2/4}
  .bld .ls{flex-wrap:wrap}
  .bld .ls input.t{flex-basis:60%}
  .bgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 14px}
  .canvas{padding:16px 8px;min-height:0}
  .rbar .ttl{order:-1;flex-basis:100%}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;font-weight:600;color:var(--muted);padding:4px}
  .tabbar a.on{color:var(--red)}
  .ph .nav-l{width:100%}
  .ph .nav-l .btn{flex:1;justify-content:center}
}

/* ---- Bổ sung cho bản triển khai (file thật qua URL) ---- */
.stage video,.stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}
.stage.doc iframe{background:#fff}
.stage .open{position:absolute;right:14px;top:14px;z-index:2}
.canvas canvas{display:block;box-shadow:0 20px 50px rgba(0,0,0,.45);border-radius:3px;background:#fff;max-width:none}
.canvas iframe{width:100%;min-height:80vh;border:0;background:#fff;border-radius:3px}
.canvas .ld{color:#cddcf0;font-size:13.5px;align-self:center}
.fl .op{color:var(--muted)}
.fl:hover .op{color:var(--blue-ink)}
.bld .ls .urls{flex-basis:100%;display:none}
.bld .ls .urls.on{display:block}
.bld .ls textarea{width:100%;min-height:64px;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font:500 12.5px/1.5 ui-monospace,Consolas,monospace;color:var(--ink);outline:none;resize:vertical}
.bld .ls textarea:focus{border-color:var(--blue)}
button.fchip{cursor:pointer}
.inp.ta textarea.mono,.mono{font:500 13px/1.6 ui-monospace,Consolas,monospace}
.flash{max-width:var(--wrap);margin:16px auto 0;padding:0 28px}
.flash .alert{display:flex;margin:0}
.admin-bar{display:flex;gap:8px;flex-wrap:wrap}
.qi .nm input.u{font:500 12px ui-monospace,Consolas,monospace;color:var(--muted)}
.hide{display:none!important}