/* UPSC Live 2.0 – news + practice app. Brand: #16108C navy, #E5001E red. Poppins. Light & dark. */
:root{
  --pri:#16108C;--pri-2:#2a24a8;--acc:#16108C;--red:#E5001E;--green:#0f9f5a;--amber:#f59e0b;
  --ink:#121331;--txt:#3a3c55;--mute:#6d7088;--line:#e6e7ef;--bg:#f3f4f8;--card:#fff;--card-2:#f8f8fc;--tint:#eeedfb;
  --ok-bg:#e7f7ef;--bad-bg:#fdecee;--warn-bg:#fff6e5;
  --glass:rgba(255,255,255,.94);--shade:rgba(14,12,48,.45);
  --r:18px;--hdr:56px;--chips:46px;--nav:62px;--side:248px;
  --sh:0 1px 2px rgba(18,19,49,.05),0 8px 24px rgba(18,19,49,.06);--sh-lg:0 20px 50px rgba(18,19,49,.18);
  --safe-b:env(safe-area-inset-bottom,0px);--fs:1;
  color-scheme:light;
}
html[data-theme="dark"]{
  --pri:#4f46e5;--pri-2:#6159f0;--acc:#a9a4ff;--red:#ff4d5e;--green:#34d399;--amber:#fbbf24;
  --ink:#eef0fb;--txt:#c4c7dc;--mute:#8d91ab;--line:#262a42;--bg:#0b0d19;--card:#141729;--card-2:#191c31;--tint:#1e2045;
  --ok-bg:rgba(52,211,153,.12);--bad-bg:rgba(255,77,94,.12);--warn-bg:rgba(251,191,36,.12);
  --glass:rgba(16,18,34,.9);--shade:rgba(0,0,0,.6);
  --sh:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);--sh-lg:0 20px 50px rgba(0,0,0,.5);
  color-scheme:dark;
}
html[data-fs="l"]{--fs:1.08}html[data-fs="xl"]{--fs:1.16}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--hdr) + var(--chips))}
body{font-family:Poppins,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
.ic{width:20px;height:20px;flex:none}
.skip{position:absolute;left:-999px;top:8px;background:var(--card);padding:8px 12px;border-radius:8px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px;border-radius:6px}
[hidden]{display:none!important}
.muted{color:var(--mute)}

/* ================= shell ================= */
.side{display:none}
.main{min-width:0}
.rail{display:none}

/* header */
.tb{position:sticky;top:0;z-index:30;height:var(--hdr);display:flex;align-items:center;gap:6px;padding:0 8px;background:var(--glass);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.tb .brand{margin-right:auto}
.ib{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;color:var(--acc);position:relative;flex:none}
.ib:hover{background:var(--tint)}
.ib .ic{width:22px;height:22px}
.ib .dotn{position:absolute;right:6px;top:6px;min-width:17px;height:17px;padding:0 4px;border-radius:10px;background:var(--red);color:#fff;font-size:10px;font-weight:700;line-height:17px;text-align:center;border:2px solid var(--card)}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.brand img{width:36px;height:36px;border-radius:50%;flex:none;background:#fff}
.bn{display:grid;line-height:1.15;min-width:0}
.bn strong{font-size:15px;font-weight:700;color:var(--acc);letter-spacing:-.01em;white-space:nowrap}
.bn small{display:flex;align-items:center;gap:5px;font-size:10.5px;font-weight:500;color:var(--mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pulse{width:6px;height:6px;border-radius:50%;background:var(--red);flex:none;animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(229,0,30,.5)}70%{box-shadow:0 0 0 6px rgba(229,0,30,0)}100%{box-shadow:0 0 0 0 rgba(229,0,30,0)}}
.stk{display:inline-flex;align-items:center;gap:3px;height:32px;padding:0 10px;border-radius:20px;background:var(--warn-bg);color:#c26b00;font-size:13px;font-weight:700}
html[data-theme="dark"] .stk{color:var(--amber)}
.stk.zero{filter:grayscale(1);opacity:.7}
.thm .i-sun{display:none}
html[data-theme="dark"] .thm .i-sun{display:block}html[data-theme="dark"] .thm .i-moon{display:none}

/* chips */
.chips{position:sticky;top:var(--hdr);z-index:29;height:var(--chips);background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.chips-in{display:flex;gap:6px;align-items:center;height:100%;overflow-x:auto;padding:0 12px;scrollbar-width:none;max-width:980px;margin:0 auto}
.chips-in::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;gap:5px;height:30px;padding:0 12px;border-radius:20px;font-size:12.5px;font-weight:500;color:var(--txt);background:var(--card-2);border:1px solid var(--line);white-space:nowrap;transition:background .2s,color .2s}
.chip .ic{width:14px;height:14px}
.chip.on{background:var(--pri);border-color:var(--pri);color:#fff}
.chip-sep{flex:none;width:1px;height:18px;background:var(--line);margin:0 4px}

.daybar{max-width:980px;margin:0 auto;padding:12px 16px 4px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.daybar h1,.daybar .h1{font-size:13px;font-weight:600;color:var(--acc);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prog{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--mute);white-space:nowrap}
.prog #readN{font-weight:600;color:var(--ink)}
.prog .bar{width:54px;height:4px;border-radius:4px;background:var(--line);overflow:hidden;display:block}
.prog .bar b{display:block;height:100%;width:0;background:var(--red);border-radius:4px;transition:width .4s}
.streak{font-size:11.5px;color:var(--ink)}

/* ================= news cards ================= */
.feed{max-width:980px;margin:0 auto;padding:8px 12px 16px;display:grid;gap:14px}
.sc{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden;display:grid;grid-template-columns:42% 1fr;min-height:300px;content-visibility:auto;contain-intrinsic-size:auto 360px;border:1px solid var(--line)}
.sc-img{position:relative;background:var(--tint);display:block}
.sc-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.flag{position:absolute;right:10px;top:10px;background:var(--red);color:#fff;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 9px;border-radius:6px}
.sc-b{padding:18px 20px 12px;display:flex;flex-direction:column;min-width:0}
.sc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:9px}
.tag{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;color:var(--acc);background:var(--tint);padding:3px 9px;border-radius:6px;line-height:1.4}
.tag.gs{background:none;border:1px solid var(--line);color:var(--mute);font-weight:500}
.tag.must{background:var(--bad-bg);color:var(--red)}
.tag.must .ic{width:11px;height:11px;fill:currentColor}
.sc-t{font-size:calc(18px*var(--fs));line-height:1.35;font-weight:600;color:var(--ink);letter-spacing:-.005em;margin-bottom:8px}
.sc-t a:hover{color:var(--acc)}
.sc-p{color:var(--txt);font-size:calc(14.5px*var(--fs));line-height:1.65}
.sc-src{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:11.5px;color:var(--mute);margin:12px 0 10px}
.sc-src a{display:inline-flex;align-items:center;gap:4px}
.sc-src a:hover{color:var(--acc)}
.sc-src b{font-weight:600;color:var(--ink)}
.sc-src .ic{width:12px;height:12px}
/* practice bar on each short */
.sc-pr{display:flex;gap:8px;margin:2px 0 10px;flex-wrap:wrap}
.pbtn{flex:1 1 auto;display:inline-flex;align-items:center;justify-content:center;gap:7px;height:42px;padding:0 14px;border-radius:12px;font-size:13px;font-weight:600;white-space:nowrap;transition:transform .15s,filter .2s}
.pbtn .ic{width:17px;height:17px}
.pbtn:active{transform:scale(.97)}
.pbtn.mcq{background:linear-gradient(135deg,var(--pri),#5a35d6);color:#fff;box-shadow:0 8px 18px -8px rgba(22,16,140,.6)}
.pbtn.kp{background:var(--tint);color:var(--acc);flex:0 1 auto}
.pbtn.mn{background:var(--bad-bg);color:var(--red);flex:0 1 auto}
.pbtn .cnt{font-weight:500;opacity:.85;font-size:12px}
.pbtn.done{background:var(--ok-bg);color:var(--green);box-shadow:none}
.sc-act{display:flex;align-items:center;gap:4px;margin-top:auto;padding-top:8px;border-top:1px solid var(--line)}
.views{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--mute);margin-right:auto}
.views .ic{width:16px;height:16px}
.views b{font-weight:500}
.act{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:10px;font-size:12.5px;font-weight:500;color:var(--txt)}
.act .ic{width:18px;height:18px}
.act:hover{background:var(--card-2)}
.act.save[aria-pressed="true"]{color:var(--acc)}
.act.save[aria-pressed="true"] .ic{fill:var(--acc)}
.sc.is-new{animation:in .5s ease both}
@keyframes in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.loader{display:flex;justify-content:center;gap:6px;padding:18px}
.loader i{width:7px;height:7px;border-radius:50%;background:var(--acc);opacity:.3;animation:dot 1s infinite}
.loader i:nth-child(2){animation-delay:.15s}.loader i:nth-child(3){animation-delay:.3s}
@keyframes dot{50%{opacity:1}}
.empty{text-align:center;padding:40px 16px;color:var(--mute);display:grid;gap:12px;justify-items:center;background:var(--card);border-radius:var(--r);border:1px dashed var(--line)}
.empty b{color:var(--ink);font-size:15px}
.endcard{max-width:980px;margin:0 auto;padding:0 12px 16px}
.endcard-in{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:28px 20px;text-align:center}
.endcard .ok{width:46px;height:46px;border-radius:50%;background:var(--tint);color:var(--acc);display:inline-grid;place-items:center;margin-bottom:10px}
.endcard h2{font-size:17px;font-weight:600}
.endcard p{color:var(--mute);font-size:13px;margin:4px 0 14px}
.endlinks{display:grid;gap:8px;max-width:360px;margin:0 auto}
.endlinks a,.endlinks button{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:14px;font-weight:500;text-align:left;width:100%}
.endlinks a:hover,.endlinks button:hover{border-color:var(--acc);color:var(--acc)}
.endlinks .ic{color:var(--acc)}
.endlinks .hot{background:var(--pri);color:#fff;border-color:var(--pri)}.endlinks .hot .ic{color:#fff}
.pager{text-align:center;padding:4px 0 24px}
.pager a{display:inline-block;padding:10px 18px;border-radius:12px;background:var(--card);border:1px solid var(--line);font-size:13px;font-weight:500;color:var(--acc)}
.about{max-width:980px;margin:0 auto;padding:8px 20px 36px;color:var(--mute)}
.about h2{font-size:14px;color:var(--ink);font-weight:600;margin-bottom:4px}
.about p{font-size:12.5px;max-width:640px}
.newpill{position:fixed;left:50%;top:calc(var(--hdr) + var(--chips) + 10px);transform:translateX(-50%);z-index:28;display:flex;align-items:center;gap:6px;background:var(--pri);color:#fff;font-size:12.5px;font-weight:600;padding:8px 14px 8px 11px;border-radius:30px;box-shadow:0 8px 24px rgba(22,16,140,.3);animation:in .35s ease both}
.newpill .ic{width:16px;height:16px}

/* ================= buttons / inputs ================= */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 20px;border-radius:13px;background:var(--pri);color:#fff;font-weight:600;font-size:14.5px;transition:transform .15s,background .2s,box-shadow .2s;white-space:nowrap}
.btn:hover{background:var(--pri-2)}
.btn:active{transform:scale(.98)}
.btn .ic{width:18px;height:18px}
.btn.red{background:var(--red)}
.btn.red:hover{filter:brightness(.94)}
.btn.ghost{background:var(--card);color:var(--acc);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--acc)}
.btn.soft{background:var(--tint);color:var(--acc)}
.btn.gold{background:linear-gradient(135deg,#ffcc33,#ff9f1a);color:#2b1700;box-shadow:0 10px 22px -10px rgba(255,159,26,.8)}
.btn.sm{height:36px;padding:0 14px;font-size:12.5px;border-radius:10px}
.btn.block{width:100%}
.btn[disabled]{opacity:.55;pointer-events:none}
.linkbtn{color:var(--acc);font-size:13px;font-weight:500;padding:8px 4px}
.inp,.ta{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:0 14px;height:48px;background:var(--card);color:var(--ink);font-size:15px;transition:border-color .2s}
.ta{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:220px}
.inp:focus,.ta:focus{outline:0;border-color:var(--acc)}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;background:var(--card-2);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px}
.seg button{height:36px;border-radius:9px;font-size:13px;font-weight:500;color:var(--mute);white-space:nowrap;padding:0 8px}
.seg button.on{background:var(--card);color:var(--acc);box-shadow:0 1px 4px rgba(18,19,49,.1);font-weight:600}
html[data-theme="dark"] .seg button.on{background:var(--tint)}

/* ================= sheets ================= */
.sheet-bg{position:fixed;inset:0;background:var(--shade);z-index:40;opacity:0;pointer-events:none;transition:opacity .25s}
body.sheet-open .sheet-bg{opacity:1;pointer-events:auto}
body.sheet-open,body.locked{overflow:hidden}
.drawer{position:fixed;left:0;top:0;bottom:0;width:min(86vw,340px);background:var(--card);z-index:41;transform:translateX(-102%);transition:transform .3s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;gap:14px;padding:12px 16px calc(16px + var(--safe-b));overflow-y:auto;visibility:hidden}
.drawer.open{transform:none;visibility:visible}
.dr-h{display:flex;justify-content:space-between;align-items:center}
.dr-h .bn small{max-width:190px}
.dr-user{display:flex;align-items:center;gap:10px;padding:12px;background:var(--card-2);border:1px solid var(--line);border-radius:14px}
.dr-user div{flex:1;min-width:0;display:grid}
.dr-user strong{font-size:14px;font-weight:600}
.dr-user small{font-size:11.5px;color:var(--mute)}
.av{width:38px;height:38px;border-radius:50%;background:var(--pri);color:#fff;display:grid;place-items:center;flex:none;font-weight:700;font-size:14px}
.dr-nav{display:grid;gap:2px}
.dr-nav a{display:flex;align-items:center;gap:12px;padding:12px 10px;border-radius:12px;font-size:14.5px;font-weight:500}
.dr-nav a:hover{background:var(--card-2)}
.dr-nav a.on{color:var(--acc);background:var(--tint)}
.dr-nav .ic{color:var(--acc)}
.dr-nav .dot{width:20px;display:grid;place-items:center}
.dr-nav .dot::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--red)}
.dr-push{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:14px;text-align:left;width:100%}
.dr-push>span{flex:1;display:grid}
.dr-push strong{font-size:13.5px;font-weight:600}
.dr-push small{font-size:11.5px;color:var(--mute)}
.dr-push>.ic{color:var(--acc)}
.sw{width:40px;height:24px;border-radius:20px;background:var(--line);position:relative;flex:none;transition:background .2s}
.sw::after{content:"";position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.25);transition:transform .2s}
.on>.sw,.sw.on{background:var(--green)}
.on>.sw::after,.sw.on::after{transform:translateX(16px)}
.dr-foot{margin-top:auto;font-size:11.5px;color:var(--mute);display:flex;justify-content:space-between;align-items:center}

.topics,.share-sh,.bsheet{position:fixed;left:0;right:0;bottom:0;z-index:41;background:var(--card);border-radius:22px 22px 0 0;max-height:90svh;overflow-y:auto;padding:10px 16px calc(20px + var(--safe-b));transform:translateY(105%);transition:transform .32s cubic-bezier(.2,.8,.2,1);visibility:hidden;overscroll-behavior:contain}
.topics.open,.share-sh.open,.bsheet.open{transform:none;visibility:visible}
.topics::before,.share-sh::before,.bsheet::before{content:"";display:block;width:40px;height:4px;border-radius:4px;background:var(--line);margin:0 auto 6px}
.tp-h{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:4px 0 8px}
.tp-h strong{font-size:16px;font-weight:600}
.tp-quick{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:6px 0 14px;border-bottom:1px solid var(--line)}
.tp-quick button{display:grid;justify-items:center;gap:6px;font-size:11.5px;font-weight:500;color:var(--txt);padding:10px 4px;border-radius:12px}
.tp-quick button .ic{width:24px;height:24px;color:var(--acc)}
.tp-quick button.on{background:var(--tint);color:var(--acc)}
.tp-l{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);margin:16px 0 10px}
.tp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.tile{position:relative;display:flex;flex-direction:column;justify-content:flex-end;gap:2px;aspect-ratio:1/1.02;padding:10px;border-radius:14px;border:1px solid var(--line);background:var(--card-2);overflow:hidden;transition:border-color .2s,transform .2s;text-align:left}
.tile:hover{border-color:var(--acc)}
.tile:active{transform:scale(.98)}
.tile .ti{position:absolute;right:10px;top:10px;width:34px;height:34px;color:var(--acc)}
.tile strong{font-size:12px;line-height:1.25;font-weight:600}
.tile em{font-style:normal;font-size:10.5px;color:var(--mute)}
.tile.on{background:var(--pri);border-color:var(--pri)}
.tile.on strong,.tile.on em,.tile.on .ti{color:#fff}
.sh-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:6px 0}
.sh-row a,.sh-row button{display:grid;justify-items:center;gap:7px;font-size:11.5px;color:var(--txt);cursor:pointer}
.sh-row span{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:var(--card-2);color:var(--acc);font-size:20px;font-weight:600}
.sh-row a[data-sh="wa"] span{background:#e8f8ee;color:#128c4b}
.sh-row a[data-sh="tg"] span{background:#e7f3fc;color:#1d8ad6}
/* key points sheet */
.kp-sec{margin:12px 0}
.kp-sec h4{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);margin-bottom:6px}
.kp-sec p{color:var(--txt);font-size:14.5px}
.kp-sec ul{list-style:none;display:grid;gap:7px}
.kp-sec li{position:relative;padding-left:20px;font-size:14.5px;color:var(--txt)}
.kp-sec li::before{content:"";position:absolute;left:4px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--red);transform:rotate(45deg)}

/* ================= gate ================= */
.gate{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center;background:var(--shade);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade .25s ease both}
@keyframes fade{from{opacity:0}}
.gate-card{position:relative;width:100%;max-width:420px;background:var(--card);border-radius:24px 24px 0 0;padding:22px 20px calc(18px + var(--safe-b));max-height:94svh;overflow-y:auto;animation:up .35s cubic-bezier(.2,.8,.2,1) both}
@keyframes up{from{transform:translateY(40px);opacity:.4}}
.gate-x{position:absolute;right:10px;top:10px}
.gate-top{text-align:center;margin-bottom:14px}
.gate-ic{width:46px;height:46px;border-radius:14px;background:var(--tint);color:var(--acc);display:inline-grid;place-items:center;margin-bottom:8px}
.gate-top h2{font-size:19px;font-weight:600;letter-spacing:-.01em}
.gate-top p{font-size:13px;color:var(--mute);margin-top:4px}
.gate-top b{color:var(--ink)}
.tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--card-2);border:1px solid var(--line);border-radius:12px;padding:4px;margin-bottom:14px}
.tabs button{height:36px;border-radius:9px;font-size:13.5px;font-weight:500;color:var(--mute)}
.tabs button.on{background:var(--card);color:var(--acc);box-shadow:0 1px 4px rgba(18,19,49,.08)}
.pane{display:none;gap:12px}
.pane.on{display:grid}
.pane label{display:grid;gap:6px;font-size:12.5px;font-weight:500;color:var(--txt)}
.pane label small{color:var(--mute);font-weight:400}
.pane input{height:48px;border:1.5px solid var(--line);border-radius:12px;padding:0 14px;font-size:15.5px;color:var(--ink);background:var(--card);width:100%;transition:border-color .2s}
.pane input:focus{outline:0;border-color:var(--acc)}
.ph{display:flex;align-items:stretch;border:1.5px solid var(--line);border-radius:12px;overflow:hidden}
.ph:focus-within{border-color:var(--acc)}
.ph i{font-style:normal;display:grid;place-items:center;padding:0 12px;background:var(--card-2);color:var(--mute);font-size:14.5px}
.ph input{border:0;border-radius:0}
.pin{display:grid;grid-template-columns:repeat(4,56px);gap:10px}
.pin input{text-align:center;font-size:22px;font-weight:600;padding:0;-webkit-text-security:disc}
.pin input:not(:placeholder-shown){border-color:var(--acc)}
.hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important}
.err{color:var(--red);font-size:12.5px}
.err:empty{display:none}
.fine{font-size:11.5px;color:var(--mute);text-align:center}
.fine.left{text-align:left}
.toast{position:fixed;left:50%;bottom:calc(var(--nav) + 16px + var(--safe-b));transform:translateX(-50%);background:var(--ink);color:var(--bg);font-size:13px;padding:10px 16px;border-radius:12px;z-index:70;box-shadow:0 10px 30px rgba(0,0,0,.25);animation:in .25s ease both;max-width:92vw;text-align:center}

/* ================= bottom nav (mobile) ================= */
.bnav{position:fixed;left:0;right:0;bottom:0;z-index:35;height:calc(var(--nav) + var(--safe-b));padding-bottom:var(--safe-b);display:grid;grid-template-columns:repeat(5,1fr);background:var(--glass);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-top:1px solid var(--line)}
.bnav a{position:relative;display:grid;justify-items:center;align-content:center;gap:3px;font-size:10.5px;font-weight:500;color:var(--mute);transition:color .2s}
.bnav a .ic{width:23px;height:23px;transition:transform .25s}
.bnav a.on{color:var(--acc);font-weight:600}
.bnav a.on .ic{transform:translateY(-1px) scale(1.06)}
.bnav a.on::before{content:"";position:absolute;top:0;width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--red)}
.bnav a .bdg{position:absolute;top:7px;left:calc(50% + 6px);min-width:16px;height:16px;padding:0 4px;border-radius:9px;background:var(--red);color:#fff;font-size:9.5px;font-weight:700;line-height:16px;text-align:center}

/* ================= app views ================= */
.view{max-width:980px;margin:0 auto;padding:14px 14px calc(var(--nav) + 30px + var(--safe-b));animation:in .3s ease both}
body.r-app .chips,body.r-app .daybar,body.r-app #feed,body.r-app #loader,body.r-app #endcard,body.r-app #pager,body.r-app .about,body.r-app #newPill{display:none!important}
html.r-app-h{scroll-snap-type:none!important}
.vh{display:flex;align-items:center;gap:10px;margin:2px 0 14px}
.vh h1,.vh h2{font-size:21px;font-weight:700;letter-spacing:-.02em;margin-right:auto}
.back{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--card);border:1px solid var(--line);color:var(--ink)}
.sec-t{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:22px 0 10px}
.sec-t h3{font-size:15px;font-weight:700}
.sec-t a,.sec-t button{font-size:12.5px;font-weight:600;color:var(--acc)}
.pc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--sh)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px 14px}
.kpi b{display:block;font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.2}
.kpi small{font-size:11.5px;color:var(--mute)}
.pill{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;padding:3px 9px;border-radius:20px;background:var(--tint);color:var(--acc);white-space:nowrap}
.pill.live{background:var(--bad-bg);color:var(--red)}
.pill.live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--red);animation:pulse 1.6s infinite}
.pill.ok{background:var(--ok-bg);color:var(--green)}
.pill.warn{background:var(--warn-bg);color:#b86e00}
html[data-theme="dark"] .pill.warn{color:var(--amber)}
.pill.lock{background:var(--card-2);color:var(--mute);border:1px solid var(--line)}

/* hero (practice home) */
.hero{position:relative;overflow:hidden;border-radius:22px;padding:18px;color:#fff;background:radial-gradient(120% 140% at 100% 0,#3b31e0 0,#16108C 45%,#0c0960 100%);box-shadow:0 18px 40px -18px rgba(22,16,140,.7)}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:18px 18px;-webkit-mask-image:linear-gradient(90deg,transparent 30%,#000);mask-image:linear-gradient(90deg,transparent 30%,#000);pointer-events:none}
.hero>*{position:relative;z-index:1}
.hero-top{display:flex;align-items:center;gap:14px}
.hero h2{font-size:19px;font-weight:700;letter-spacing:-.01em;line-height:1.25}
.hero p{font-size:12.5px;opacity:.8}
.rings{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:16px}
.rg{display:flex;align-items:center;gap:10px;min-width:0}
.ring{position:relative;width:64px;height:64px;flex:none}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:7;stroke-linecap:round}
.ring .tr{stroke:rgba(255,255,255,.15)}
.ring .pr{transition:stroke-dashoffset 1s cubic-bezier(.3,.7,.2,1)}
.ring b{position:absolute;inset:0;display:grid;place-items:center;font-size:13px;font-weight:700}
.rlab{display:grid;align-content:center;font-size:11px;opacity:.85;line-height:1.3}
.rlab strong{font-size:14px;opacity:1}
.hero .xpb{height:6px;border-radius:6px;background:rgba(255,255,255,.18);overflow:hidden;margin-top:6px}
.hero .xpb i{display:block;height:100%;background:linear-gradient(90deg,#ffd166,#ff8a3d);border-radius:6px}
.lvl{font-size:11px;font-weight:600;background:rgba(255,255,255,.15);padding:3px 9px;border-radius:20px}

/* action tiles */
.acts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.at{position:relative;display:flex;flex-direction:column;gap:6px;padding:14px;border-radius:18px;background:var(--card);border:1px solid var(--line);text-align:left;min-height:116px;transition:transform .15s,border-color .2s;overflow:hidden}
.at:hover{border-color:var(--acc)}
.at:active{transform:scale(.98)}
.at .ai{width:40px;height:40px;border-radius:12px;display:grid;place-items:center}
.at .ai .ic{width:22px;height:22px}
.at strong{font-size:14px;font-weight:700;line-height:1.25}
.at small{font-size:11.5px;color:var(--mute);line-height:1.35}
.at .badge{position:absolute;right:12px;top:12px}
.c1 .ai{background:#ece9ff;color:#4b3bdb}.c2 .ai{background:#ffe9ec;color:#e5001e}.c3 .ai{background:#e3f6ec;color:#0f9f5a}
.c4 .ai{background:#fff1dc;color:#d97706}.c5 .ai{background:#e3f1ff;color:#1d6fd6}.c6 .ai{background:#f3e8ff;color:#9333ea}
html[data-theme="dark"] .at .ai{background:var(--tint)!important}

/* subject grid */
.subs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.sub{display:grid;gap:4px;justify-items:start;padding:12px;border-radius:14px;background:var(--card);border:1px solid var(--line);text-align:left}
.sub .ti{width:24px;height:24px;color:var(--acc)}
.sub strong{font-size:12.5px;font-weight:600;line-height:1.2}
.sub em{font-style:normal;font-size:10.5px;color:var(--mute)}
.sub .mini{width:100%;height:4px;border-radius:4px;background:var(--line);overflow:hidden}.sub .mini i{display:block;height:100%;background:var(--green)}

/* lists */
.list{display:grid;gap:10px}
.li{display:flex;align-items:center;gap:12px;padding:14px;border-radius:16px;background:var(--card);border:1px solid var(--line);text-align:left;width:100%}
.li .lic{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:var(--tint);color:var(--acc);flex:none}
.li .lic .ic{width:22px;height:22px}
.li .lt{flex:1;min-width:0;display:grid;gap:2px}
.li .lt strong{font-size:14px;font-weight:600;line-height:1.35}
.li .lt small{font-size:12px;color:var(--mute)}
.li .rt{text-align:right;display:grid;gap:4px;justify-items:end;flex:none}
.li .rt b{font-size:16px}

/* ================= question runner ================= */
.qz{max-width:720px;margin:0 auto}
.qz-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.qz-dots{flex:1;display:flex;gap:4px}
.qz-dots i{flex:1;height:5px;border-radius:5px;background:var(--line);transition:background .3s}
.qz-dots i.cur{background:var(--acc)}.qz-dots i.ok{background:var(--green)}.qz-dots i.bad{background:var(--red)}
.qz-n{font-size:12.5px;color:var(--mute);font-weight:600;white-space:nowrap}
.qcard{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--sh)}
.qmeta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.qtext{font-size:calc(16px*var(--fs));font-weight:500;line-height:1.6;white-space:pre-line;color:var(--ink)}
.opts{display:grid;gap:10px;margin-top:16px}
.opt{position:relative;display:flex;align-items:flex-start;gap:12px;width:100%;padding:13px 14px;border-radius:14px;border:1.5px solid var(--line);background:var(--card);text-align:left;font-size:calc(14.5px*var(--fs));line-height:1.5;transition:border-color .2s,background .2s,transform .1s;overflow:hidden}
.opt:hover{border-color:var(--acc)}
.opt:active{transform:scale(.99)}
.opt .k{position:relative;z-index:1;width:28px;height:28px;flex:none;border-radius:9px;display:grid;place-items:center;font-size:12.5px;font-weight:700;background:var(--card-2);border:1px solid var(--line);color:var(--mute)}
.opt .ot{flex:1;padding-top:3px;position:relative;z-index:1}
.opt .pct{position:relative;z-index:1;font-size:12px;font-weight:600;color:var(--mute);padding-top:4px}
.opt .bar{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--tint);opacity:.7;transition:width .8s cubic-bezier(.3,.7,.2,1)}
.opt.sel{border-color:var(--acc);background:var(--tint)}
.opt.sel .k{background:var(--pri);color:#fff;border-color:var(--pri)}
.opt.right{border-color:var(--green);background:var(--ok-bg)}
.opt.right .k{background:var(--green);color:#fff;border-color:var(--green)}
.opt.wrong{border-color:var(--red);background:var(--bad-bg)}
.opt.wrong .k{background:var(--red);color:#fff;border-color:var(--red)}
.opts.done .opt{pointer-events:none}
.verdict{display:flex;align-items:center;gap:10px;margin-top:14px;padding:12px 14px;border-radius:14px;font-weight:600;font-size:14px;animation:pop .4s cubic-bezier(.2,1.4,.4,1) both}
.verdict.ok{background:var(--ok-bg);color:var(--green)}.verdict.bad{background:var(--bad-bg);color:var(--red)}
.verdict small{display:block;font-weight:500;color:var(--mute);font-size:12px}
@keyframes pop{from{transform:scale(.9);opacity:0}}
.expl{margin-top:12px;padding:14px;border-radius:14px;background:var(--card-2);border:1px solid var(--line);font-size:calc(14px*var(--fs));line-height:1.65;color:var(--txt);white-space:pre-line}
.expl h4{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);margin-bottom:4px}
.qz-bar{position:sticky;bottom:calc(var(--nav) + var(--safe-b));display:flex;gap:10px;margin:14px -14px 0;padding:10px 14px;z-index:5;background:linear-gradient(180deg,transparent,var(--bg) 30%)}
.qz-bar .btn{flex:1}
.qtools{display:flex;gap:4px;margin-left:auto}
.qtools button{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--mute)}
.qtools button.on{color:var(--acc)}.qtools button.on .ic{fill:currentColor}
.shake{animation:shake .4s}
@keyframes shake{20%,60%{transform:translateX(-5px)}40%,80%{transform:translateX(5px)}}

/* summary */
.sum{text-align:center;padding:26px 18px}
.big-ring{position:relative;width:132px;height:132px;margin:0 auto 12px}
.big-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.big-ring circle{fill:none;stroke-width:10;stroke-linecap:round}
.big-ring .tr{stroke:var(--line)}.big-ring .pr{stroke:var(--green);transition:stroke-dashoffset 1.2s cubic-bezier(.3,.7,.2,1)}
.big-ring b{position:absolute;inset:0;display:grid;place-items:center;align-content:center;font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1}
.big-ring b small{display:block;font-size:11px;font-weight:500;color:var(--mute);letter-spacing:0;margin-top:4px}
.sum h2{font-size:20px;font-weight:700}
.sum p{color:var(--mute);font-size:13.5px;margin:4px 0 16px}
.xpgain{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;background:var(--warn-bg);color:#b86e00;font-weight:700;font-size:13px;margin-bottom:14px;animation:pop .5s .3s both}
html[data-theme="dark"] .xpgain{color:var(--amber)}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:80;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:8px;height:12px;border-radius:2px;animation:fall 1.6s ease-in forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg);opacity:.2}}

/* ================= test player ================= */
.tp-head{position:sticky;top:var(--hdr);z-index:20;display:flex;align-items:center;gap:10px;padding:10px 0;background:var(--bg)}
.timer{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:10px;background:var(--card);border:1px solid var(--line);font-weight:700;font-variant-numeric:tabular-nums}
.timer.low{color:var(--red);border-color:var(--red);animation:pulse 1.2s infinite}
.pal{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:8px}
.pal button{height:40px;border-radius:10px;border:1.5px solid var(--line);background:var(--card);font-weight:600;font-size:13px}
.pal button.ans{background:var(--pri);border-color:var(--pri);color:#fff}
.pal button.mk{border-color:var(--amber);box-shadow:inset 0 -3px 0 var(--amber)}
.pal button.cur{outline:2px solid var(--acc);outline-offset:2px}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11.5px;color:var(--mute);margin:10px 0}
.legend i{display:inline-block;width:12px;height:12px;border-radius:4px;vertical-align:-2px;margin-right:5px;border:1.5px solid var(--line)}
.legend .a{background:var(--pri);border-color:var(--pri)}.legend .m{border-color:var(--amber)}

/* result */
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:14px 0}
.res-grid div{background:var(--card-2);border:1px solid var(--line);border-radius:14px;padding:10px 6px;text-align:center}
.res-grid b{display:block;font-size:18px}
.res-grid small{font-size:11px;color:var(--mute)}
.res-grid .g b{color:var(--green)}.res-grid .r b{color:var(--red)}
.sol{border:1px solid var(--line);border-radius:16px;background:var(--card);margin-bottom:10px;overflow:hidden}
.sol summary{list-style:none;cursor:pointer;display:flex;gap:10px;align-items:flex-start;padding:13px 14px;font-size:14px;line-height:1.5}
.sol summary::-webkit-details-marker{display:none}
.sol summary .n{width:26px;height:26px;border-radius:8px;flex:none;display:grid;place-items:center;font-size:12px;font-weight:700;color:#fff;background:var(--mute)}
.sol.g summary .n{background:var(--green)}.sol.r summary .n{background:var(--red)}
.sol summary span{flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sol[open] summary span{display:block;white-space:pre-line}
.sol .sb{padding:0 14px 14px}

/* leaderboard */
.lb-top{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0}
.lb-c{position:relative;text-align:center;padding:16px 8px 12px;border-radius:18px;background:var(--card);border:1px solid var(--line)}
.lb-c .av{margin:0 auto 6px;width:46px;height:46px;font-size:16px}
.lb-c strong{display:block;font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lb-c b{font-size:17px}
.lb-c .md{position:absolute;top:-10px;left:50%;transform:translateX(-50%);font-size:20px}
.lb-c.p1{border-color:#f5c542;box-shadow:0 10px 26px -12px rgba(245,197,66,.8);transform:translateY(-6px)}
.lb-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:14px;background:var(--card);border:1px solid var(--line);margin-bottom:8px}
.lb-row .rk{width:26px;font-weight:700;color:var(--mute);text-align:center}
.lb-row .av{width:34px;height:34px;font-size:12px}
.lb-row strong{flex:1;font-weight:600;font-size:14px}
.lb-row.me{border-color:var(--acc);background:var(--tint)}

/* mains */
.mq{border-left:4px solid var(--red)}
.mq .qtext{font-size:calc(15.5px*var(--fs))}
.wc{display:flex;justify-content:space-between;font-size:12px;color:var(--mute);margin:6px 2px}
.wc b{color:var(--ink)}.wc.over b{color:var(--red)}
.ups{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.up{position:relative;width:76px;height:96px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--card-2);display:grid;place-items:center;font-size:11px;color:var(--mute)}
.up img{width:100%;height:100%;object-fit:cover}
.up button{position:absolute;right:4px;top:4px;width:22px;height:22px;border-radius:50%;background:rgba(0,0,0,.6);color:#fff;font-size:13px;line-height:1}
.upadd{border:1.5px dashed var(--line);cursor:pointer;display:grid;place-items:center;gap:4px;align-content:center}
.upadd .ic{color:var(--acc)}
.fb{white-space:pre-line;font-size:14px;line-height:1.7;color:var(--txt)}
.score-b{display:inline-flex;align-items:baseline;gap:2px;font-weight:800;font-size:26px;color:var(--green)}
.score-b small{font-size:13px;color:var(--mute);font-weight:600}

/* me */
.me-h{display:flex;align-items:center;gap:14px}
.me-h .av{width:58px;height:58px;font-size:20px;background:linear-gradient(135deg,var(--pri),#7c3aed)}
.me-h h2{font-size:19px;font-weight:700}
.heat{display:grid;grid-template-rows:repeat(7,12px);grid-auto-flow:column;grid-auto-columns:12px;gap:3px;overflow-x:auto;padding-bottom:4px}
.heat i{border-radius:3px;background:var(--line)}
.heat i.l1{background:#c7c2ff}.heat i.l2{background:#8e85ff}.heat i.l3{background:#5b4ff0}.heat i.l4{background:#16108C}
html[data-theme="dark"] .heat i.l4{background:#a9a4ff}
.bars{display:grid;gap:10px}
.brow{display:grid;grid-template-columns:96px 1fr 44px;align-items:center;gap:10px;font-size:12.5px}
.brow .bt{height:9px;border-radius:9px;background:var(--line);overflow:hidden}
.brow .bt i{display:block;height:100%;border-radius:9px;transition:width 1s}
.brow b{text-align:right}
.swot{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.swot .pc{padding:12px 14px}
.swot h4{font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:6px}
.swot .s h4{color:var(--green)}.swot .w h4{color:var(--red)}
.swot li{list-style:none;font-size:13px;display:flex;justify-content:space-between;padding:3px 0}
.set{display:flex;align-items:center;gap:12px;padding:14px;border-bottom:1px solid var(--line);width:100%;text-align:left}
.set:last-child{border-bottom:0}
.set .ic{color:var(--acc)}
.set span{flex:1;display:grid}
.set small{font-size:11.5px;color:var(--mute)}
.memb{position:relative;overflow:hidden;border-radius:20px;padding:16px;background:linear-gradient(135deg,#1b1340,#3a1d6e 60%,#7a2b6b);color:#fff}
.memb.free{background:linear-gradient(135deg,#ff9f1a,#ff5b36)}
.memb h3{font-size:16px;font-weight:700}
.memb p{font-size:12.5px;opacity:.85}

/* plans */
.perks{list-style:none;display:grid;gap:9px;margin:14px 0}
.perks li{display:flex;gap:10px;font-size:14px;color:var(--txt)}
.perks li::before{content:"✓";flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--ok-bg);color:var(--green);font-weight:800;font-size:12px}
.plan{position:relative;display:flex;align-items:center;gap:12px;width:100%;padding:16px;border-radius:18px;border:2px solid var(--line);background:var(--card);text-align:left;margin-bottom:10px;transition:border-color .2s}
.plan .rd{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);flex:none;display:grid;place-items:center}
.plan.on{border-color:var(--acc);background:var(--tint)}
.plan.on .rd{border-color:var(--acc)}.plan.on .rd::after{content:"";width:11px;height:11px;border-radius:50%;background:var(--acc)}
.plan .pn{flex:1;display:grid}.plan .pn strong{font-size:15px}.plan .pn small{font-size:12px;color:var(--mute)}
.plan .pp{text-align:right}.plan .pp b{font-size:20px;font-weight:800}.plan .pp s{display:block;font-size:12px;color:var(--mute)}
.plan .tagx{position:absolute;right:14px;top:-10px;font-size:10.5px;font-weight:700;padding:3px 9px;border-radius:20px;background:linear-gradient(135deg,#ffcc33,#ff9f1a);color:#2b1700}
.paybar{position:sticky;bottom:calc(var(--nav) + var(--safe-b));margin:12px -14px 0;padding:12px 14px 8px;background:var(--bg);border-top:1px solid var(--line);z-index:5}
/* paywall sheet */
.lockic{width:62px;height:62px;border-radius:20px;margin:6px auto 10px;display:grid;place-items:center;background:linear-gradient(135deg,#ffcc33,#ff9f1a);color:#2b1700}
.lockic .ic{width:30px;height:30px}
/* inbox */
.nt{display:flex;gap:12px;padding:13px 4px;border-bottom:1px solid var(--line)}
.nt .ndot{width:9px;height:9px;border-radius:50%;background:transparent;margin-top:7px;flex:none}
.nt.un .ndot{background:var(--red)}
.nt div{flex:1;display:grid;gap:2px}
.nt strong{font-size:14px;font-weight:600}
.nt p{font-size:13px;color:var(--txt)}
.nt small{font-size:11px;color:var(--mute)}
.skel{background:linear-gradient(90deg,var(--card) 0,var(--card-2) 50%,var(--card) 100%);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:16px;border:1px solid var(--line)}
@keyframes sk{to{background-position:-200% 0}}

/* ================= mobile ================= */
@media (max-width:760px){
  :root{--hdr:54px;--chips:44px}
  html.snap{scroll-snap-type:y mandatory}
  .daybar{padding:10px 14px 2px}
  .feed{padding:6px 10px 10px;gap:10px}
  .sc{grid-template-columns:1fr;grid-template-rows:auto 1fr;min-height:calc(100svh - var(--hdr) - var(--chips) - var(--nav) - var(--safe-b) - 18px);scroll-snap-align:start;scroll-snap-stop:always;scroll-margin-top:8px;contain-intrinsic-size:auto 640px}
  .sc-img{aspect-ratio:16/9;height:auto;max-height:28svh}
  .sc-b{padding:13px 15px 8px}
  .sc-t{font-size:calc(17px*var(--fs))}
  .sc-p{font-size:calc(14.2px*var(--fs));line-height:1.6}
  .endcard,.pager,.about{scroll-snap-align:start}
  .endcard-in{min-height:calc(100svh - var(--hdr) - var(--chips) - var(--nav) - 40px);display:flex;flex-direction:column;justify-content:center}
  .act span{display:none}
  .sc-src{margin-top:auto;padding-top:10px}
  .act{padding:0 10px}
  .about{padding-bottom:calc(var(--nav) + 30px + var(--safe-b))}
  .pbtn{height:40px;font-size:12.5px;padding:0 12px}
  .res-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  #topBtn{display:none}
  .tb{gap:2px;padding:0 4px}
  .tb .ib{width:38px}
  .tb .bn small{display:none}
  .tb .bn strong{font-size:14px;overflow:hidden;text-overflow:ellipsis}
  .tb .brand{flex:1;min-width:0;overflow:hidden}
  .rg{flex-direction:column;gap:4px;text-align:center}
  .sc-pr{gap:6px;flex-wrap:nowrap}
  .pbtn{padding:0 10px;font-size:12.5px;gap:5px}
  .pbtn .cnt{display:none}
  .rlab{font-size:10.5px}.rlab strong{font-size:12px}
}
@media (max-width:360px){
  .sc-t{font-size:16px}.sc-p{font-size:13.8px}
  .pin{grid-template-columns:repeat(4,1fr)}
  .subs{grid-template-columns:repeat(2,1fr)}
  .pbtn .cnt{display:none}
}
@media (min-width:761px){
  .gate{align-items:center}
  .gate-card{border-radius:24px}
  .topics,.share-sh,.bsheet{left:50%;right:auto;bottom:auto;top:50%;width:540px;max-height:86vh;border-radius:22px;transform:translate(-50%,-46%);opacity:0;transition:opacity .2s,transform .25s}
  .topics.open,.share-sh.open,.bsheet.open{transform:translate(-50%,-50%);opacity:1}
  .topics::before,.share-sh::before,.bsheet::before{display:none}
  .tp-grid{grid-template-columns:repeat(4,1fr)}
  .sc{grid-template-columns:40% 1fr;min-height:0;align-items:start}
  .sc-img{aspect-ratio:16/9;margin:16px 0 16px 16px;border-radius:12px;overflow:hidden}
  .sc-b{padding:16px 20px 10px;align-self:stretch}
  .acts{grid-template-columns:repeat(3,1fr)}
  .subs{grid-template-columns:repeat(4,1fr)}
}
/* ================= desktop: sidebar + right rail ================= */
@media (min-width:1024px){
  :root{--nav:0px}
  .bnav{display:none}
  body{display:grid;grid-template-columns:var(--side) minmax(0,1fr)}
  .side{display:flex;flex-direction:column;gap:4px;position:sticky;top:0;height:100vh;overflow-y:auto;padding:16px 14px;border-right:1px solid var(--line);background:var(--card)}
  .side .brand{padding:4px 6px 14px}
  .side a.nv{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:12px;font-size:14.5px;font-weight:500;color:var(--txt);position:relative}
  .side a.nv:hover{background:var(--card-2)}
  .side a.nv.on{background:var(--tint);color:var(--acc);font-weight:600}
  .side a.nv .ic{width:21px;height:21px}
  .side a.nv .bdg{margin-left:auto;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--red);color:#fff;font-size:11px;font-weight:700;line-height:20px;text-align:center}
  .side .sl{font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);padding:14px 12px 6px}
  .side .sfoot{margin-top:auto;display:grid;gap:8px;padding-top:12px}
  .tb .ib[data-open="drawer"]{display:none}
  .tb .brand{visibility:hidden}
  .toast{bottom:24px}
  .qz-bar,.paybar{bottom:0;margin-left:-24px;margin-right:-24px;padding-left:24px;padding-right:24px}
  .view{padding:20px 24px 60px}
}
@media (min-width:1280px){
  body.has-rail{grid-template-columns:var(--side) minmax(0,1fr) 320px}
  .rail{display:block;position:sticky;top:0;height:100vh;overflow-y:auto;padding:18px 16px;border-left:1px solid var(--line)}
  body:not(.has-rail) .rail{display:none}
  .rail .hero{margin-bottom:12px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}