:root{
  --ink:#1A1B3A; --ink-2:#2C2E5A; --paper:#F1F2F7; --surface:#FFFFFF;
  --coral:#FF5C39; --coral-2:#FF7A5C; --coral-soft:#FFE4DB;
  --grape:#605DBA; --grape-2:#514FA0;
  --green:#12A67E; --green-soft:#D9F2EA;
  --muted:#6B6F8C; --line:#E6E7EF; --text:#1A1B3A;
  --shadow:0 1px 2px rgba(26,27,58,.06),0 8px 24px rgba(26,27,58,.07);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none !important}
html,body{margin:0;padding:0}
body{
  background:var(--paper); color:var(--text);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased; line-height:1.45;
}
#root{max-width:460px;margin:0 auto;min-height:100vh;position:relative;background:var(--paper)}
.display{font-family:"Bricolage Grotesque","Inter",sans-serif;font-weight:800;letter-spacing:-.02em;line-height:1.05}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
a{color:inherit;text-decoration:none}
.en{font-weight:600}
.pron{color:var(--coral);font-size:13px;font-weight:600}

/* ---------- App shell ---------- */
.topbar{position:sticky;top:0;z-index:20;background:var(--ink);color:#fff}
.topbar-inner{display:flex;align-items:center;gap:12px;padding:14px 18px;max-width:1440px;margin:0 auto}
.brand{display:flex;flex-direction:column;gap:1px;flex:1;min-width:0}
.brand .k{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#9FA2C9;font-weight:600}
.brand .t{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ring{width:42px;height:42px;flex:none}

.scroll{padding:18px 18px 120px 18px}

/* ---------- Selectors ---------- */
.eyebrow{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:0 2px 10px}
.chiprow{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin:0 -18px;padding-left:18px;padding-right:18px;scrollbar-width:none}
.chiprow::-webkit-scrollbar{display:none}
.chip{flex:none;display:flex;align-items:center;gap:7px;padding:9px 13px;border-radius:999px;background:var(--surface);
  border:1.5px solid var(--line);font-size:14px;font-weight:600;color:var(--text);white-space:nowrap}
.chip .em{font-size:16px;line-height:1}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.lock{color:#A6A9C0;background:transparent}
.chip.lock .tag{font-size:10px;font-weight:700;color:#A6A9C0;background:var(--line);padding:2px 6px;border-radius:6px;text-transform:uppercase;letter-spacing:.05em}
.levelrow{display:flex;gap:7px;overflow-x:auto;margin:0 -18px;padding:0 18px 4px;scrollbar-width:none}
.levelrow::-webkit-scrollbar{display:none}
.lvl{flex:none;min-width:46px;text-align:center;padding:10px 12px;border-radius:14px;background:var(--surface);
  border:1.5px solid var(--line);font-weight:700;font-size:14px}
.lvl.on{background:var(--coral);border-color:var(--coral);color:#fff;box-shadow:0 6px 16px rgba(255,92,57,.28)}
.lvl.lock{color:#B7B9CD}
.lvl small{display:block;font-size:9px;font-weight:700;letter-spacing:.04em;color:inherit;opacity:.7;margin-top:1px}

/* ---------- Week header ---------- */
.weekhead{margin:26px 2px 6px}
.weekhead .wk{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--coral);font-weight:700}
.weekhead h2{margin:4px 0 0;font-size:26px}
.weekhead p{margin:8px 0 0;color:var(--muted);font-size:14px}
.progress{margin:16px 2px 4px;display:flex;align-items:center;gap:12px}
.bar{flex:1;height:9px;border-radius:999px;background:var(--line);overflow:hidden}
.bar > i{display:block;height:100%;background:linear-gradient(90deg,var(--green),#1FC295);border-radius:999px;transition:width .5s ease}
.progress .lab{font-size:13px;font-weight:700;color:var(--muted);white-space:nowrap}

/* ---------- Path (signature) ---------- */
.path{margin-top:20px;position:relative}
.node{display:flex;gap:16px;position:relative;padding-bottom:14px}
.rail{position:relative;flex:none;width:38px;display:flex;justify-content:center}
.rail .line{position:absolute;top:38px;bottom:-14px;width:3px;background:var(--line);border-radius:2px}
.node.done .rail .line{background:var(--green)}
.node:last-child .rail .line{display:none}
.dot{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;background:var(--surface);border:2.5px solid var(--line);color:var(--muted);z-index:2}
.node.done .dot{background:var(--green);border-color:var(--green);color:#fff}
.node.now .dot{background:#fff;border-color:var(--coral);color:var(--coral);box-shadow:0 0 0 5px var(--coral-soft)}
.node.milestone.now .dot,.node.milestone .dot{border-style:solid}
.card{flex:1;background:var(--surface);border:1.5px solid var(--line);border-radius:18px;padding:14px 15px;
  box-shadow:var(--shadow);text-align:left;display:block;width:100%;transition:transform .12s ease}
.card:active{transform:scale(.985)}
.node.now .card{border-color:var(--coral)}
.card .row1{display:flex;align-items:center;justify-content:space-between;gap:10px}
.card h3{margin:0;font-size:16px;font-weight:700}
.card .obj{margin:5px 0 0;font-size:13px;color:var(--muted)}
.pill{font-size:10px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:4px 8px;border-radius:999px;white-space:nowrap}
.pill.done{background:var(--green-soft);color:var(--green)}
.pill.now{background:var(--coral-soft);color:var(--coral)}
.pill.todo{background:var(--line);color:var(--muted)}
.miniflag{display:inline-flex;align-items:center;gap:5px;margin-top:9px;font-size:11px;font-weight:700;color:var(--coral)}

/* coming soon */
.soon{background:var(--surface);border:1.5px dashed var(--line);border-radius:18px;padding:26px 18px;text-align:center;margin-top:18px}
.soon .em{font-size:30px}
.soon h3{margin:8px 0 4px;font-size:17px}
.soon p{margin:0;color:var(--muted);font-size:14px}

/* ---------- Lesson view ---------- */
.lesson{position:fixed;inset:0;max-width:460px;margin:0 auto;background:var(--paper);z-index:40;display:flex;flex-direction:column;animation:slideup .28s ease}
@keyframes slideup{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}
.lhead{background:var(--ink);color:#fff;padding:14px 16px 16px}
.lhead .top{display:flex;align-items:center;gap:12px}
.iconbtn{width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.12);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.lhead .meta{flex:1;min-width:0}
.lhead .meta .k{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#9FA2C9;font-weight:700}
.lhead .meta .t{font-size:18px;font-weight:800;font-family:"Bricolage Grotesque",sans-serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tabs{display:flex;gap:6px;margin-top:14px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:none;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700;color:#BFC1E0;background:rgba(255,255,255,.08)}
.tab.on{background:#fff;color:var(--ink)}
.lbody{flex:1;overflow-y:auto;padding:18px 16px 150px}
.sectitle{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:0 2px 12px}

.vcard{background:var(--surface);border:1.5px solid var(--line);border-radius:16px;padding:13px 14px;margin-bottom:10px;box-shadow:var(--shadow)}
.vcard .vt{display:flex;align-items:center;justify-content:space-between;gap:10px}
.vcard .en{font-size:18px}
.vcard .es{color:var(--muted);font-size:14px;margin-top:1px}
.vcard .ex{margin-top:9px;padding-top:9px;border-top:1px dashed var(--line);font-size:13px}
.vcard .ex .exen{font-weight:600}
.vcard .ex .exes{color:var(--muted)}
.play{width:40px;height:40px;border-radius:12px;background:var(--coral-soft);color:var(--coral);font-size:18px;display:flex;align-items:center;justify-content:center;flex:none}
.play:active{background:var(--coral);color:#fff}

.tip{background:linear-gradient(180deg,#23254F,#1A1B3A);color:#fff;border-radius:18px;padding:18px;box-shadow:var(--shadow)}
.tip .k{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--coral-2);font-weight:700}
.tip h3{margin:6px 0 8px;font-size:19px;font-family:"Bricolage Grotesque",sans-serif}
.tip p{margin:0 0 12px;color:#D7D8F0;font-size:14px}
.tip .ex{background:rgba(255,255,255,.07);border-radius:12px;padding:10px 12px;margin-top:8px}
.tip .ex .a{font-weight:700}
.tip .ex .b{color:#B9BBE0;font-size:13px}

.dlg{display:flex;flex-direction:column;gap:10px}
.bubblewrap{display:flex;gap:8px;align-items:flex-end}
.bubblewrap.b{flex-direction:row-reverse}
.avatar{width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex:none}
.bubblewrap.b .avatar{background:var(--coral)}
.bubble{max-width:78%;background:var(--surface);border:1.5px solid var(--line);border-radius:18px;border-bottom-left-radius:6px;padding:10px 12px;box-shadow:var(--shadow)}
.bubblewrap.b .bubble{border-bottom-left-radius:18px;border-bottom-right-radius:6px;background:#EEF0FF;border-color:#E1E4FA}
.bubble .nm{font-size:11px;font-weight:800;color:var(--muted);margin-bottom:2px}
.bubble .tx{font-size:15px;font-weight:600;display:flex;align-items:flex-start;gap:8px;justify-content:space-between}
.bubble .es{font-size:12px;color:var(--muted);margin-top:4px;display:none}
.bubble.show .es{display:block}
.sbtn{font-size:12px;color:var(--coral);font-weight:700;flex:none}

.ex-block{background:var(--surface);border:1.5px solid var(--line);border-radius:18px;padding:16px;margin-bottom:14px;box-shadow:var(--shadow)}
.ex-q{font-size:14px;color:var(--muted);font-weight:600;margin-bottom:4px}
.ex-main{font-size:17px;font-weight:700;margin-bottom:12px}
.opt{display:block;width:100%;text-align:left;padding:13px 14px;border-radius:13px;border:1.5px solid var(--line);background:#fff;font-size:15px;font-weight:600;margin-bottom:8px}
.opt.sel{border-color:var(--ink)}
.opt.correct{border-color:var(--green);background:var(--green-soft)}
.opt.wrong{border-color:#E5484D;background:#FDE7E7}
.inp{width:100%;padding:13px 14px;border-radius:13px;border:1.5px solid var(--line);font-size:16px;font-weight:600;font-family:inherit}
.inp:focus{outline:none;border-color:var(--ink)}
.tokens{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.tok{padding:9px 13px;border-radius:11px;border:1.5px solid var(--line);background:#fff;font-weight:700;font-size:15px}
.tok.used{opacity:.35}
.answerbox{min-height:48px;border:1.5px dashed var(--line);border-radius:13px;padding:8px;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.answerbox .tok{border-style:solid;border-color:var(--ink)}
.matchrow{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.matchrow .l{flex:none;min-width:120px;font-weight:700}
.matchrow select{flex:1;padding:11px;border-radius:11px;border:1.5px solid var(--line);font-family:inherit;font-size:14px;font-weight:600;background:#fff}
.check{width:100%;padding:13px;border-radius:13px;background:var(--ink);color:#fff;font-weight:700;font-size:15px}
.check:disabled{opacity:.4}
.fb{margin-top:10px;font-size:14px;font-weight:600;padding:10px 12px;border-radius:11px}
.fb.ok{background:var(--green-soft);color:var(--green)}
.fb.no{background:#FDE7E7;color:#C62A2F}

.challenge{background:linear-gradient(180deg,#FF6B49,#FF5C39);color:#fff;border-radius:20px;padding:20px;box-shadow:0 12px 30px rgba(255,92,57,.3)}
.challenge .k{font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;opacity:.9}
.challenge h3{margin:6px 0 10px;font-size:21px;font-family:"Bricolage Grotesque",sans-serif}
.challenge p{margin:0 0 12px;font-size:14px;opacity:.95}
.challenge .model{background:rgba(255,255,255,.16);border-radius:12px;padding:12px 14px;font-weight:700;font-size:15px;margin-bottom:14px}
.challenge .crit{font-size:12px;opacity:.9;margin-bottom:14px}
.practiced{width:100%;padding:14px;border-radius:13px;background:#fff;color:var(--coral);font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;gap:8px}
.practiced.on{background:rgba(255,255,255,.2);color:#fff}

.footer{position:fixed;bottom:0;left:0;right:0;max-width:460px;margin:0 auto;padding:14px 16px calc(14px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,rgba(241,242,247,0),var(--paper) 32%)}
.complete{width:100%;padding:16px;border-radius:15px;background:var(--coral);color:#fff;font-weight:800;font-size:16px;box-shadow:0 10px 24px rgba(255,92,57,.32)}
.complete.done{background:var(--green);box-shadow:0 10px 24px rgba(18,166,126,.3)}

.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:96px;background:var(--ink);color:#fff;padding:12px 18px;border-radius:14px;font-weight:700;font-size:14px;z-index:60;box-shadow:var(--shadow);animation:pop .3s ease}
@keyframes pop{from{transform:translateX(-50%) translateY(8px);opacity:0}to{transform:translateX(-50%);opacity:1}}

@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important}}

/* ---------- week navigator ---------- */
.weeknav{display:flex;gap:7px;overflow-x:auto;margin:18px -18px 0;padding:0 18px 4px;scrollbar-width:none}
.weeknav::-webkit-scrollbar{display:none}
.wchip{flex:none;padding:9px 13px;border-radius:12px;background:var(--surface);border:1.5px solid var(--line);font-weight:700;font-size:13px;color:var(--muted);white-space:nowrap}
.wchip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.wchip.full{border-color:var(--green);color:var(--green)}
.wchip.full.on{background:var(--green);border-color:var(--green);color:#fff}
.wkinfo{margin:18px 2px 0}
.wkinfo .wk2{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--coral);font-weight:700}
.wkinfo p{margin:7px 0 0;color:var(--muted);font-size:14px}

/* ---------- topbar extras ---------- */
.gear{width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.14);color:#fff;font-size:17px;display:flex;align-items:center;justify-content:center;flex:none}
.gear:active{background:rgba(255,255,255,.26)}

/* ---------- voice settings sheet ---------- */
.sheet-bg{position:fixed;inset:0;max-width:460px;margin:0 auto;background:rgba(20,21,45,.45);z-index:70;display:flex;align-items:flex-end;animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet{width:100%;background:var(--surface);border-radius:24px 24px 0 0;padding:20px 18px calc(24px + env(safe-area-inset-bottom));box-shadow:0 -10px 40px rgba(26,27,58,.25);animation:slideup .26s ease}
.sheet-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sheet-h h3{margin:0;font-size:20px;font-family:"Bricolage Grotesque",sans-serif}
.sheet-x{width:32px;height:32px;border-radius:10px;background:var(--paper);color:var(--muted);font-size:14px}
.sheet-note{color:var(--muted);font-size:14px;margin:4px 0 6px}
.sheet-l{display:block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.sheet-sel{width:100%;padding:13px;border-radius:13px;border:1.5px solid var(--line);font-family:inherit;font-size:15px;font-weight:600;background:#fff}
.seg{display:flex;gap:7px}
.seg-b{flex:1;min-width:0;padding:11px;border-radius:12px;border:1.5px solid var(--line);background:#fff;font-weight:700;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.seg-lang{flex-wrap:wrap}
.seg-lang .seg-b{flex:1 1 calc(50% - 4px)}
.seg-b.on{background:var(--ink);border-color:var(--ink);color:#fff}
.sheet-prev{width:100%;margin-top:16px;padding:14px;border-radius:13px;background:var(--coral);color:#fff;font-weight:800;font-size:15px}

/* ---------- login ---------- */
.login-wrap{padding:56px 22px;display:flex;justify-content:center}
.login-card{width:100%;max-width:380px;background:var(--surface);border:1.5px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.login-card h1{margin:0 0 4px;font-size:26px}
.login-card .sub{color:var(--muted);font-size:14px;margin:0 0 18px}
.login-card label{display:block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin:12px 0 6px}
.login-card .error{background:#FDE7E7;color:#C62A2F;font-size:13px;font-weight:600;padding:9px 12px;border-radius:11px;margin-bottom:10px}
.login-card .remember{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-top:12px;text-transform:none;letter-spacing:0;font-weight:500}

/* ---------- site navbar (marca, estilo benative.pro) ---------- */
.sitenav{background:var(--surface);border-bottom:1px solid var(--line)}
.sitenav-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:12px 18px}
.sitenav-logo img{height:24px;width:auto;display:block}
.sitenav-links{list-style:none;display:flex;justify-content:center;gap:0;margin:0;padding:0;overflow-x:auto;scrollbar-width:none;flex:1}
.sitenav-links::-webkit-scrollbar{display:none}
.sitenav-links a{display:block;color:var(--ink);font-weight:700;font-size:13px;white-space:nowrap;padding:0 16px}
.sitenav-links a:hover{color:var(--coral)}
.sitenav-actions{flex:none;display:flex;align-items:center;gap:14px}
.sitenav-lang{position:relative}
.sitenav-lang summary{display:flex;color:var(--muted);cursor:pointer;list-style:none}
.sitenav-lang summary::-webkit-details-marker{display:none}
.sitenav-lang summary:hover{color:var(--coral)}
.sitenav-lang[open] summary{color:var(--coral)}
.sitenav-lang-menu{position:absolute;top:calc(100% + 10px);right:0;margin:0;padding:6px;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);min-width:140px;z-index:30}
.sitenav-lang-menu li a{display:block;padding:7px 10px;border-radius:8px;color:var(--ink);font-weight:600;font-size:14px;white-space:nowrap}
.sitenav-lang-menu li a:hover{background:var(--paper)}
.sitenav-social{display:flex;gap:14px}
.sitenav-social a{color:var(--muted)}
.sitenav-social a:hover{color:var(--coral)}
.sitenav-cta{flex:none;padding:9px 16px;border-radius:999px;background:var(--grape);color:#fff;font-weight:700;font-size:14px;white-space:nowrap}
.sitenav-cta:hover{background:var(--grape-2)}
@media (max-width:900px){
  .sitenav-links{justify-content:flex-start}
}
@media (max-width:640px){
  .sitenav-actions{gap:10px}
  .sitenav-social{display:none}
  .sitenav-inner{gap:12px}
  .sitenav-links a{padding:0 10px}
}

/* ---------- brand logos ---------- */
.logo{display:inline-flex;align-items:center}
.logo img{height:24px;width:auto;display:block}
.brand .brand-logo{height:22px;width:auto;align-self:flex-start;display:block;filter:brightness(0) invert(1)} /* logo oscuro → blanco en topbar navy */
.foot-logo{height:26px;width:auto;margin-bottom:14px}

/* ---------- brand header (login / legales) ---------- */
.brandbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;background:var(--surface);border-bottom:1px solid var(--line)}
.logout-btn{width:38px;height:38px;border-radius:12px;background:var(--paper);color:var(--muted);
  display:flex;align-items:center;justify-content:center;flex:none;border:1.5px solid var(--line)}
.logout-btn:hover{color:var(--ink);border-color:var(--ink)}

/* ---------- legal footer (estilo benative.pro) ---------- */
.legalfoot{border-top:1px solid var(--line);background:var(--surface);padding:36px 18px calc(28px + env(safe-area-inset-bottom))}
.legalfoot-cols{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:28px}
.legalfoot .widget-title{font-size:15px;font-weight:800;margin:0 0 12px;font-family:"Bricolage Grotesque",sans-serif}
.legalfoot .widget ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.legalfoot .widget ul a{color:var(--muted);font-size:14px;font-weight:600}
.legalfoot .widget ul a:hover{color:var(--ink)}
.legalfoot .legal-copy{color:var(--muted);font-size:13px;margin:0 0 14px;line-height:1.5}
.social{display:flex;gap:14px}
.social a{color:var(--muted)}
.social a:hover{color:var(--coral)}
.widget-actions{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.btn-grape{display:inline-block;padding:9px 16px;border-radius:999px;background:var(--grape);color:#fff;font-weight:700;font-size:14px}
.btn-grape:hover{background:var(--grape-2)}
.btn-ghost{display:inline-block;padding:9px 16px;border-radius:999px;border:1.5px solid var(--line);color:var(--muted);font-weight:700;font-size:14px}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink)}
.legalfoot-bottom{max-width:1440px;margin:26px auto 0;padding-top:20px;border-top:1px solid var(--line);text-align:center}
.legalfoot-bottom p{color:var(--muted);font-size:12px;margin:0 0 6px;line-height:1.5}
.legalfoot-bottom .ssl{font-weight:700}
@media (min-width:760px){
  .legalfoot-cols{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
}

/* ---------- legal page ---------- */
.scroll.legal-page{display:block;max-width:760px;margin:0 auto}
.legal-page h1{margin:6px 0 2px}
.legal-otherlinks{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.legal-otherlinks a{display:inline-block;padding:8px 12px;border-radius:10px;border:1.5px solid var(--line);
  background:var(--surface);color:var(--ink);font-size:13px;font-weight:600;text-transform:none;letter-spacing:0}
.legal-otherlinks a:hover{border-color:var(--ink)}

/* ---------- responsive ---------- */
img{max-width:100%}
.side{min-width:0}

/* Móvil: full-width (el max-width:460 ya cede al 100% en pantallas pequeñas). */
/* Tablet: columna cómoda centrada. */
@media (min-width:560px) and (max-width:999px){
  #root{max-width:620px}
  .lesson,.footer,.sheet-bg{max-width:620px}
}

/* Escritorio: usa TODA la pantalla — dashboard de 2 columnas, mismo diseño. */
@media (min-width:1000px){
  #root{max-width:none;background:var(--paper)}
  .topbar-inner{padding:16px 34px}
  .sitenav-inner{padding:14px 34px}
  .scroll{max-width:1440px;margin:0 auto;padding:30px 34px 90px;
    display:grid;grid-template-columns:340px minmax(0,1fr);gap:44px;align-items:start}
  .side{position:sticky;top:24px}
  .side .chiprow,.side .levelrow{flex-wrap:wrap;overflow:visible;margin:0;padding:0}
  .main{min-width:0}
  .main .weekhead{margin-top:0}
  .main .weeknav{flex-wrap:wrap;overflow:visible;margin:18px 0 0;padding:0}

  /* Lección a pantalla completa, con la cabecera y el cuerpo centrados para lectura cómoda. */
  .lesson,.footer{max-width:none}
  /* La hoja de ajustes de voz: en escritorio, modal compacto centrado (no barra a todo el ancho). */
  .sheet-bg{max-width:none;align-items:center;justify-content:center;padding:24px}
  .sheet{max-width:420px;border-radius:20px;padding:24px;
    box-shadow:0 24px 60px rgba(26,27,58,.28);animation:fade .2s ease}
  .lhead{padding:18px 34px 20px}
  .lhead .top,.lhead .tabs{max-width:900px;margin-inline:auto}
  .lbody{padding:28px 34px 150px}
  .lbody > [data-tabs-target]{max-width:860px;margin-inline:auto}
  .footer{padding:16px 34px calc(16px + env(safe-area-inset-bottom))}
  .footer .complete{max-width:860px;margin:0 auto;display:block}
}