:root{--navy:#0B1747;--blue:#1D3FD8;--blue2:#E8EDFD;--yel:#FFC727;--ice:#F3F5FA;--ink:#0B1747;--ink2:#3B4568;--ink3:#5B6584;--line:#E1E6F2;--ok:#12A150;--okbg:#E8F7EE;--bad:#D92D20;--badbg:#FDECEA;--card:#fff;--nav:72px}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--ice);color:var(--ink);font-family:'Plus Jakarta Sans',system-ui,sans-serif;font-size:16px;line-height:1.5}
button{font:inherit;cursor:pointer}
a{color:var(--blue)}
.boot{min-height:100vh;display:flex;align-items:center;justify-content:center}
.spin{width:34px;height:34px;border:4px solid var(--blue2);border-top-color:var(--blue);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* layout */
.shell{min-height:100vh;padding-bottom:calc(var(--nav) + env(safe-area-inset-bottom))}
.top{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;padding:12px 16px;padding-top:calc(12px + env(safe-area-inset-top));display:flex;align-items:center;gap:12px}
.top .back{background:none;border:0;color:#fff;font-size:26px;line-height:1;width:40px;height:40px;margin:-8px 0 -8px -8px;border-radius:10px}
.top .ttl{font-weight:800;font-size:17px;line-height:1.2;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top .sub{font-size:12px;color:#C9D2F2;font-weight:600}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;line-height:1.05;font-size:15px}
.brand small{display:block;color:#8FA2F7;font-weight:800}
.main{max-width:760px;margin:0 auto;padding:16px}
.nav{position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fff;border-top:1px solid var(--line);display:flex;padding-bottom:env(safe-area-inset-bottom)}
.nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:var(--nav);color:var(--ink3);text-decoration:none;font-size:12px;font-weight:700}
.nav a svg{width:24px;height:24px}
.nav a.on{color:var(--blue)}
.nbrand{display:none}
@media (min-width:900px){
  .shell{padding:0 0 0 220px}
  .nav{top:0;right:auto;width:220px;flex-direction:column;justify-content:flex-start;border-top:0;border-right:1px solid var(--line);padding-top:80px}
  .nav a{flex:0;height:auto;flex-direction:row;justify-content:flex-start;gap:12px;font-size:15px;padding:14px 24px}
  .nav:before{content:"";position:absolute;top:0;left:0;right:0;height:64px;background:var(--navy)}
  .nbrand{display:flex;position:absolute;top:14px;left:20px;z-index:2;align-items:center;gap:10px;color:#fff;font-weight:800;line-height:1.05;font-size:15px}.nbrand small{display:block;color:#8FA2F7}
  .top .brand{display:none}
  .main{padding:28px 24px}
}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px}
.card+.card,.stack>*+*{margin-top:12px}
h1.pg{font-size:26px;line-height:1.15;margin:4px 0 14px;letter-spacing:-.02em}
h2.sec{font-size:18px;margin:26px 0 10px}
.muted{color:var(--ink3);font-size:14px}
.kick{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--blue);text-transform:uppercase}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:14px 20px;font-weight:800;font-size:16px;text-decoration:none;min-height:48px}
.btn.y{background:var(--yel);color:var(--navy)}
.btn.b{background:var(--blue);color:#fff}
.btn.g{background:var(--blue2);color:var(--blue)}
.btn.w{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn.full{width:100%}
.btn:disabled{opacity:.5}
.row{display:flex;gap:12px;align-items:center}
.grow{flex:1;min-width:0}
.chip{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.03em;border-radius:999px;padding:3px 9px;white-space:nowrap}
.chip.new{background:var(--ice);color:var(--ink3)}
.chip.st{background:var(--blue2);color:var(--blue)}
.chip.rv{background:#FFF4CF;color:#7A5600}
.chip.ok{background:var(--okbg);color:var(--ok)}
.chip.due{background:var(--yel);color:var(--navy)}

/* hoje */
.hero{background:var(--navy);color:#fff;border-radius:22px;padding:20px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-50px;top:-60px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero .big{font-size:44px;font-weight:800;line-height:1;color:var(--yel)}
.hero .muted{color:#C9D2F2}
.bar{height:10px;border-radius:5px;background:var(--line);overflow:hidden}
.bar>i{display:block;height:100%;background:var(--blue);border-radius:5px}
.hero .bar{background:rgba(255,255,255,.15)}.hero .bar>i{background:var(--yel)}
.task{display:flex;gap:14px;align-items:center;text-decoration:none;color:inherit}
.task .ic{flex:0 0 46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;background:var(--blue2)}
.task .t{font-weight:800}
.task .go{color:var(--blue);font-size:22px;font-weight:800}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat b{display:block;font-size:28px;line-height:1.1;color:var(--blue)}
.stat span{font-size:13px;color:var(--ink3);font-weight:600}

/* lista de assuntos */
.mat{margin-top:18px}
.mat h3{font-size:15px;margin:0 0 8px;display:flex;justify-content:space-between;align-items:center}
.as{display:flex;gap:12px;align-items:center;padding:13px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:inherit}
.as+.as{margin-top:8px}
.as .n{flex:0 0 36px;height:36px;border-radius:10px;background:var(--ice);font-weight:800;color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:14px}
.as.done .n{background:var(--blue);color:#fff}
.as .t{font-weight:700;font-size:15px;line-height:1.3}
.as .m{font-size:12px;color:var(--ink3);margin-top:3px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin:0 -16px;padding:0 16px 4px;scrollbar-width:none}
.tabs button{flex:0 0 auto;border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font-weight:700;font-size:14px;color:var(--ink2)}
.tabs button.on{background:var(--navy);color:#fff;border-color:var(--navy)}

/* teoria */
.teoria{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 16px;font-size:16px;line-height:1.6;position:relative;overflow:hidden}
.teoria .wm{position:absolute;inset:0;pointer-events:none;background-repeat:repeat;opacity:.05;z-index:1}
.teoria>*{position:relative}
.teoria h3{font-size:18px;margin:26px 0 10px;padding:8px 12px;background:var(--blue2);border-left:4px solid var(--blue);border-radius:0 10px 10px 0;line-height:1.3}
.teoria h4{font-size:16px;margin:18px 0 6px}
.teoria p{margin:10px 0}
.teoria ul,.teoria ol{padding-left:22px;margin:8px 0}
.teoria li{margin:4px 0}
.teoria table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.4;margin:12px 0;display:block;overflow-x:auto}
.teoria th{background:var(--navy);color:#fff;text-align:left;padding:8px 10px;font-size:13px}
.teoria td{border-bottom:1px solid var(--line);padding:8px 10px;vertical-align:top;min-width:110px}
.teoria tr:nth-child(even) td{background:#FAFBFE}
.teoria img{max-width:100%;height:auto;border-radius:8px}
.teoria .cai{background:var(--ice);border:1.5px solid var(--line);border-radius:14px;padding:14px;font-size:14px;line-height:1.55}
.teoria .cai>b:first-child{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--blue);margin-bottom:4px}
.teoria .cai .bar{display:none}
.teoria .cai .big{color:var(--blue)}
.teoria .tag{display:inline-block;font-size:11px;font-weight:800;border-radius:6px;padding:1px 6px;vertical-align:1px}
.teoria .tag.esf{background:var(--yel);color:var(--navy)}.teoria .tag.t30{background:var(--navy);color:#fff}.teoria .tag.dois{background:var(--ice);color:var(--navy);border:1px solid var(--navy)}
.teoria .peg,.teoria .dica{border-radius:12px;padding:12px 14px;margin:14px 0;font-size:15px;border-left:4px solid}
.teoria .peg{background:#FDECEA;border-color:#D92D20}
.teoria .peg:before{content:"⚠ PEGADINHA";display:block;font-size:12px;font-weight:800;letter-spacing:.06em;color:#B42318;margin-bottom:2px}
.teoria .dica{background:#FFF7DB;border-color:var(--yel)}
.teoria .dica:before{content:"★ DICA";display:block;font-size:12px;font-weight:800;letter-spacing:.06em;color:#8a6500;margin-bottom:2px}
.teoria .cobra{border:2px dashed var(--blue);border-radius:14px;padding:12px 14px;margin:16px 0;font-size:15px}
.teoria .cbt{font-size:12px;font-weight:800;letter-spacing:.06em;color:var(--blue)}
.teoria .res{border:1.5px solid var(--line);border-radius:14px;overflow:hidden;margin:18px 0}
.teoria .res .cab{background:var(--navy);color:#fff;font-size:12px;font-weight:700;padding:8px 12px}
.teoria .res .enun{padding:12px 14px 4px;font-size:15px}
.teoria .res .alt{list-style:upper-alpha;margin:4px 0 8px;padding-left:40px;font-size:15px}
.teoria .res .passos{background:var(--ice);padding:12px 14px;font-size:15px}
.teoria .ok{color:var(--ok);font-weight:700}.teoria .x{color:var(--bad);font-weight:700}
.teoria .small{font-size:13px;color:var(--ink3)}
.teoria .cols{columns:1}
.endbar{position:sticky;bottom:calc(var(--nav) + 8px);z-index:10;margin-top:16px;display:flex;gap:10px;background:rgba(243,245,250,.92);backdrop-filter:blur(6px);padding:8px 0}
@media (min-width:900px){.endbar{bottom:8px}}

/* questão */
.qhead{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px;color:var(--ink3);font-weight:700;margin-bottom:8px}
.qprog{height:6px;border-radius:3px;background:var(--line);margin-bottom:14px;overflow:hidden}.qprog>i{display:block;height:100%;background:var(--blue)}
.qstem{font-size:16.5px;line-height:1.55;font-weight:500}
.qstem img,.qfig{max-width:100%;border-radius:8px}
.alts{margin-top:14px}
.alt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;background:#fff;border:2px solid var(--line);border-radius:14px;padding:12px 14px;font-size:15.5px;line-height:1.45;color:var(--ink)}
.alt+.alt{margin-top:10px}
.alt .l{flex:0 0 30px;height:30px;border-radius:50%;background:var(--ice);color:var(--blue);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px}
.alt.sel{border-color:var(--blue)}
.alt.sel .l{background:var(--blue);color:#fff}
.alt.right{border-color:var(--ok);background:var(--okbg)}.alt.right .l{background:var(--ok);color:#fff}
.alt.wrong{border-color:var(--bad);background:var(--badbg)}.alt.wrong .l{background:var(--bad);color:#fff}
.fb{margin-top:14px;border-radius:14px;padding:14px 16px;font-size:15px;line-height:1.5}
.fb.ok{background:var(--okbg)}.fb.bad{background:var(--badbg)}
.fb b.h{display:block;font-size:16px;margin-bottom:4px}
.fb .w{margin-top:8px;font-size:14px;color:#7A5600;background:#FFF7DB;border-radius:10px;padding:8px 10px}
.txbtn{display:inline-flex;align-items:center;gap:6px;background:var(--blue2);color:var(--blue);border:0;border-radius:999px;padding:6px 12px;font-weight:800;font-size:13px}
.sheet{position:fixed;inset:0;z-index:60;background:rgba(11,23,71,.55);display:flex;align-items:flex-end;justify-content:center}
.sheet .in{background:#fff;width:100%;max-width:760px;max-height:85vh;border-radius:20px 20px 0 0;display:flex;flex-direction:column}
.sheet .hd{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line);font-weight:800}
.sheet .hd button{border:0;background:var(--ice);width:40px;height:40px;border-radius:12px;font-size:20px}
.sheet .bd{overflow:auto;padding:14px 16px 30px;font-size:15px;line-height:1.6}
.sheet .tl{display:flex;gap:10px}.sheet .lnum{flex:0 0 22px;color:var(--ink3);font-size:12px;text-align:right;padding-top:3px}
.qnav{display:flex;gap:10px;margin-top:16px}
.sum{text-align:center}
.sum .big{font-size:56px;font-weight:800;color:var(--blue);line-height:1}

/* login */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--navy)}
.login .box{background:#fff;border-radius:24px;padding:28px 22px;width:100%;max-width:400px}
.login input{width:100%;font:inherit;font-size:17px;padding:14px;border:1.5px solid #C9D2F2;border-radius:12px;margin:8px 0 12px}
.login input.code{letter-spacing:.4em;text-align:center;font-weight:800;font-size:24px}
.err{color:var(--bad);font-size:14px;min-height:20px}
.empty{text-align:center;padding:30px 10px;color:var(--ink3)}
.empty .e{font-size:42px}
.toast{position:fixed;left:50%;bottom:calc(var(--nav) + 20px);transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 18px;border-radius:12px;font-weight:700;font-size:14px;z-index:80;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.rvl{display:flex;gap:6px;margin-top:6px}.rvl span{flex:1;height:6px;border-radius:3px;background:var(--line)}.rvl span.d{background:var(--blue)}
.card.trial{background:#FFF4CF;border-color:#F5D77A}
.as.bloq{background:#FAFBFE}.as.bloq .n{background:var(--ice);font-size:16px}.as.bloq .t{color:var(--ink2)}
.chip.lock{background:var(--navy);color:#fff}
.pdfbtn{display:flex;gap:14px;align-items:center;width:100%;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;color:var(--ink);font:inherit}
.pdfbtn .pe{font-size:26px}.pdfbtn .go{color:var(--blue);font-weight:800;font-size:18px}
.pdfbtn:disabled{opacity:.6}