/* diseno.css — la cara elegida por Pepe (D127): «el escritorio del marker de noche».
   Sale de producto/diseno/app/style.css (el prototipo) sin su barra de prototipo. Cómo entra (D131):
   · Los tokens (--paper, --ink, --blue…) mandan en toda la app: estilo.css traduce los suyos a estos.
   · Los componentes (.card, .li, .btn, .tabbar…) no chocan con los nombres de estilo.css.
   · El reseteo de márgenes y de botones solo vale en las pantallas nuevas (body.d2), para no
     descuadrar las viejas mientras se migran.
   · La matemática sigue en KaTeX (--math = KaTeX_Main); sin rojo, ámbar para lo perdido (D27). */
/* Marksmith prototype · shared design system (v2, 25 sep)
   Identity: the marker's desk at night. Ink-navy panels with rising embers, paper sheets,
   a blue marker's pen that draws the ticks and circles the total, amber (never red) for
   marks still to win back, gold for the last question. Type: Instrument Serif (display),
   Geist (interface), STIX Two Text (maths), Caveat (the student's hand).
   Mobile first at 375 px. Motion always has a reduced-motion end state. */

/* ============ TOKENS ============ */
/* Los tokens viven en estilo.css (D131): los auditores cargan solo esa hoja. */

/* ============ BASE ============ */
*,*::before,*::after{box-sizing:border-box}
:where(.d2) *,:where(.d2) *::before,:where(.d2) *::after{margin:0;padding:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{font-family:var(--sans);background-color:var(--paper);color:var(--ink);overflow-x:clip;min-width:0;
  background-image:radial-gradient(900px 420px at 85% -120px,rgba(255,194,75,.10),transparent 70%),
    radial-gradient(700px 380px at -10% 0,rgba(53,82,255,.06),transparent 70%),
    linear-gradient(var(--gridc) 1px,transparent 1px),linear-gradient(90deg,var(--gridc) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;font-feature-settings:'ss01','cv11'}
/* paper grain: tactile, never busy */
body::before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
:root[data-theme="dark"] body::before{mix-blend-mode:screen;opacity:.035}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) body::before{mix-blend-mode:screen;opacity:.035}}
body.d2{font:400 16px/24px var(--sans)}
:where(.d2) :is(button,input,textarea,select){font:inherit;color:inherit}
:where(.d2) button{background:none;border:0;cursor:pointer;-webkit-tap-highlight-color:transparent;text-align:inherit}
:where(.d2) a{color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent}
img,svg,canvas{max-width:100%}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,194,75,.45);color:inherit}
sup,sub{font-size:.68em;line-height:0}
.tnum{font-variant-numeric:tabular-nums}
.nw{white-space:nowrap!important}
.serif{font-family:var(--serif);font-weight:400}
.math{font-family:var(--math);font-size:1.06em;white-space:normal;overflow-wrap:anywhere}
.m{font-family:var(--math);font-style:italic}
.hand{font-family:var(--hand);font-weight:500}
.eyebrow{font-size:12px;line-height:16px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;color:var(--ink2)}
.muted{color:var(--ink2)}
.small{font-size:13px;line-height:18px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.fr{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;font-size:.82em;line-height:1.15;margin:0 2px}
.fr>span:first-child{border-bottom:1px solid currentColor;padding:0 3px}
.lims{display:inline-flex;flex-direction:column;vertical-align:middle;font-size:.62em;line-height:1.05;margin-left:-1px;text-align:left}
.ov{text-decoration:overline}
.earned{color:var(--accentText)}
.lostc{color:var(--lostText)}

/* ============ APP BAR ============ */
.appbar{position:sticky;top:0;z-index:30;height:58px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 var(--g);
  background:var(--barbg);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--hair)}
.appbar>*{min-width:0}
.bar-left{display:flex;align-items:center;gap:6px;min-width:0;flex:1 1 auto}
.bar-right{display:flex;align-items:center;gap:8px;flex:none}
.wordmark{display:inline-flex;align-items:center;gap:8px;font-family:var(--serif);font-size:26px;line-height:1;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.wordmark svg{flex:none}
.wordmark .wm-t i{font-style:italic}
.back{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;flex:none;color:var(--ink);transition:background .2s}
.back:hover,.back:active{background:var(--blueSoft)}
.bar-title{font-weight:600;font-size:15px;line-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;letter-spacing:-.005em}
.cseg{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:2px;position:relative}
.cseg button{height:30px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;color:var(--ink2);white-space:nowrap;transition:background .25s var(--ease),color .25s}
.cseg button[aria-pressed="true"]{background:var(--ink);color:var(--paper);box-shadow:0 2px 6px rgba(11,16,48,.25)}
.login{font-size:14px;font-weight:600;color:var(--accentText);padding:8px 2px;min-height:40px;display:inline-flex;align-items:center}
.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(145deg,#1B2356,#0B1030);color:#F6F4EF;font-size:13px;font-weight:600;display:grid;place-items:center;letter-spacing:.02em;flex:none;box-shadow:0 0 0 2px var(--paper),0 0 0 3.5px rgba(255,194,75,.7)}
@media (max-width:360px){.wordmark .wm-t{display:none}}

/* ============ LAYOUT ============ */
.wrap{max-width:1100px;margin:0 auto;padding:var(--gt) var(--g) 112px;min-width:0}
.narrow{max-width:680px;margin-left:auto;margin-right:auto}
.stack{display:grid;gap:24px;min-width:0}
.stack>*,.grid2>*,.grid3>*,.row>*{min-width:0}
.stack-s{display:grid;gap:12px;min-width:0}
.stack-s>*{min-width:0}
.grid2{display:grid;gap:12px}
.grid3{display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr))}
.row{display:flex;align-items:center;gap:10px;min-width:0}
.spread{display:flex;justify-content:space-between;align-items:center;gap:12px;min-width:0}
.spread>*{min-width:0}
.wrapflex{display:flex;flex-wrap:wrap;gap:8px}
.page-h{font-family:var(--serif);font-weight:400;font-size:40px;line-height:42px;letter-spacing:-.015em;margin-top:6px;text-wrap:balance}
.page-sub{font-size:15px;line-height:22px;color:var(--ink2);margin-top:8px;max-width:44ch}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:10px;min-width:0}
.sec-head h2{font-family:var(--serif);font-size:25px;line-height:30px;font-weight:400;letter-spacing:-.005em;min-width:0}
.h-serif{font-family:var(--serif);font-weight:400;font-size:28px;line-height:32px;letter-spacing:-.005em;text-wrap:balance}
.link{color:var(--accentText);font-size:14px;font-weight:600;min-height:40px;display:inline-flex;align-items:center;gap:4px;white-space:nowrap;transition:gap .2s var(--ease)}
.link:hover{gap:7px}
.divider{height:1px;background:var(--line);border:0}

/* ============ CARDS ============ */
.card{background:var(--cardBg);border-radius:22px;box-shadow:var(--sh);padding:18px;position:relative;min-width:0;border:1px solid var(--hair)}
.card.flat{box-shadow:none;border:1px solid var(--line);background:transparent}
.card.tight{padding:14px}
a.card,.intent,.mode,.door{transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
@media (hover:hover){
  a.card:hover,.intent:hover,.mode:hover{transform:translateY(-2px);box-shadow:var(--shHover)}
  .door:hover{transform:translateY(-3px)}
}
.ink{background-color:var(--inkPanel);color:#F6F4EF;border-radius:24px;padding:20px;position:relative;overflow:hidden;isolation:isolate;box-shadow:var(--shInk);min-width:0;
  background-image:radial-gradient(90% 70% at 100% 0%,rgba(255,194,75,.16),transparent 60%),radial-gradient(70% 60% at 0% 110%,rgba(53,82,255,.22),transparent 65%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px}
.ink .eyebrow,.ink .gold-eb{color:var(--gold)}
.ink .muted{color:rgba(246,244,239,.72)}
.ink .link{color:var(--gold)}
.bignum{position:absolute;right:-10px;top:-40px;font-family:var(--serif);font-size:170px;line-height:1;color:transparent;-webkit-text-stroke:1.5px rgba(255,194,75,.8);letter-spacing:-.04em;z-index:-1;pointer-events:none;user-select:none;
  background:linear-gradient(180deg,rgba(255,194,75,.18),transparent 70%);-webkit-background-clip:text;background-clip:text}

/* embers: injected by app.js into ink panels; decorative only */
.embers{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden;border-radius:inherit}
.embers i{position:absolute;top:100%;left:var(--x);width:var(--s);height:var(--s);border-radius:50%;opacity:0;
  background:radial-gradient(circle,#FFF1C9 0,#FFC24B 45%,rgba(255,159,46,0) 72%);
  box-shadow:0 0 10px 2px rgba(255,159,46,.35);animation:ember var(--d) linear var(--dl) infinite;will-change:transform,opacity}
@keyframes ember{0%{transform:translate(0,0) scale(1);opacity:0}12%{opacity:var(--o,.85)}70%{opacity:calc(var(--o,.85) * .6)}100%{transform:translate(var(--dx),-440px) scale(.4);opacity:0}}

/* ============ BUTTONS ============ */
.btn{width:100%;min-height:56px;padding:0 20px;border-radius:17px;color:#fff;font-weight:600;font-size:17px;letter-spacing:-.005em;display:flex;align-items:center;justify-content:center;gap:10px;text-align:center;position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(180deg,#4A66FF 0%,var(--blue) 45%,var(--blueDeep) 100%);
  box-shadow:0 1px 0 rgba(255,255,255,.28) inset,0 -2px 0 rgba(0,0,0,.12) inset,0 10px 24px -8px rgba(53,82,255,.6),0 2px 4px rgba(11,16,48,.12);
  transition:transform .15s var(--ease),box-shadow .25s,opacity .2s}
.btn::after{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.28) 48%,transparent 62%);transform:translateX(-110%);transition:transform .8s var(--ease)}
@media (hover:hover){.btn:hover::after{transform:translateX(110%)}.btn:hover{box-shadow:0 1px 0 rgba(255,255,255,.28) inset,0 -2px 0 rgba(0,0,0,.12) inset,0 14px 30px -8px rgba(53,82,255,.7),0 2px 4px rgba(11,16,48,.12)}}
.btn:active{transform:scale(.975)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;box-shadow:none;cursor:default}
.btn .th{font-family:var(--serif);font-size:26px;line-height:1;color:#FFD98A;font-weight:400;margin-top:-2px}
.btn-gold{min-height:50px;padding:0 20px;border-radius:15px;color:#0B1030;font-weight:600;font-size:16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  background:linear-gradient(180deg,#FFD57A,var(--gold) 55%,#F5A93A);box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 10px 24px -8px rgba(255,159,46,.55);transition:transform .15s var(--ease)}
.btn-gold:active,.btn-out:active,.btn-sm:active{transform:scale(.97)}
.btn-out{min-height:48px;padding:0 16px;border-radius:15px;border:1.5px solid var(--ink);font-weight:600;font-size:15px;display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;transition:transform .15s,background .2s,color .2s}
@media (hover:hover){.btn-out:hover{background:var(--ink);color:var(--paper)}}
.btn-out.full{width:100%}
.btn-sm{min-height:44px;padding:0 16px;border-radius:14px;background:linear-gradient(180deg,#4A66FF,var(--blueDeep));color:#fff;font-weight:600;font-size:15px;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:6px;box-shadow:0 1px 0 rgba(255,255,255,.25) inset,0 6px 14px -6px rgba(53,82,255,.6);transition:transform .15s}
.btn-ghost{min-height:44px;padding:0 6px;font-weight:600;font-size:15px;color:var(--accentText);display:inline-flex;align-items:center;gap:6px}
.ink .btn-ghost{color:rgba(246,244,239,.85)}
.chip{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;white-space:nowrap;border:1.5px solid var(--line);background:var(--surface);transition:transform .12s,border-color .2s}
.chip:active{transform:scale(.96)}
.chip:hover{border-color:var(--r3)}
.chip[aria-pressed="true"],.chip.on{border-color:var(--blue);color:var(--accentText);background:var(--blueSoft)}
.pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;line-height:16px;font-weight:700;padding:4px 9px;border-radius:999px;white-space:nowrap}
.pill.ok{background:var(--blueSoft);color:var(--accentText)}
.pill.lost{background:var(--lostbg);color:var(--lostText)}
.pill.gold{background:rgba(255,194,75,.2);color:var(--goldText)}
.ink .pill.gold{background:rgba(255,194,75,.16);color:var(--gold)}
.pill.plain{background:var(--paper);color:var(--ink2);border:1px solid var(--line)}

/* ============ LIST ROWS ============ */
.list{list-style:none;display:grid;min-width:0}
.li{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;column-gap:12px;min-height:62px;padding:10px 4px;border-bottom:1px solid var(--line);text-align:left;width:100%;border-radius:0;transition:background .2s}
a.li:hover{background:linear-gradient(90deg,transparent,var(--blueSoft) 30%,transparent)}
.list>li:last-child>.li,.list>.li:last-child{border-bottom:0}
.li .ic{width:40px;height:40px;border-radius:13px;background:var(--paper);display:grid;place-items:center;color:var(--ink);font-family:var(--math);font-size:19px;flex:none;box-shadow:0 0 0 1px var(--hair) inset}
.li .tx{min-width:0}
.li .tx b{display:block;font-size:15px;line-height:20px;font-weight:600}
.li .tx small{display:block;font-size:13px;line-height:18px;color:var(--ink2)}
.li .end{display:flex;align-items:center;gap:8px;color:var(--ink2);font-size:13px}
.chev{width:18px;height:18px;flex:none;color:var(--ink2);transition:transform .2s var(--ease)}
a.li:hover .chev{transform:translateX(3px)}
.clamp1{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ============ SEGMENTED / TABS ============ */
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);background:var(--paper);border-radius:14px;padding:3px;border:1px solid var(--line)}
.seg button{min-height:40px;border-radius:11px;font-size:14px;font-weight:600;color:var(--ink2);text-align:center;display:flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap;min-width:0;transition:background .25s var(--ease),color .2s,box-shadow .25s}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(11,16,48,.14),0 0 0 1px var(--hair)}
.seg button small{font-size:11px;font-weight:500;color:var(--ink2)}

/* ============ TAB BAR / RAIL ============ */
.tabbar{position:fixed;left:0;right:0;bottom:0;height:calc(66px + env(safe-area-inset-bottom));padding:0 6px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:var(--barbg);-webkit-backdrop-filter:saturate(1.4) blur(16px);backdrop-filter:saturate(1.4) blur(16px);border-top:1px solid var(--hair);z-index:40}
.tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;line-height:14px;font-weight:600;color:var(--ink2);min-width:0;position:relative;transition:color .2s}
.tab svg{width:24px;height:24px;position:relative;z-index:1}
.tab::before{content:'';position:absolute;top:9px;left:50%;width:56px;height:30px;border-radius:999px;background:var(--blueSoft);transform:translateX(-50%) scale(.6);opacity:0;transition:transform .3s var(--spring),opacity .2s}
.tab[aria-current="page"]{color:var(--accentText)}
.tab[aria-current="page"]::before{opacity:1;transform:translateX(-50%) scale(1)}
.tdot{display:none}
body.focus .tabbar{display:none}
body.focus .wrap{padding-bottom:48px}
.rail{display:none}

/* ============ HERO / DOORS (first visit) ============ */
.hero-h1{font-family:var(--serif);font-weight:400;font-size:46px;line-height:46px;letter-spacing:-.02em;margin-top:10px;text-wrap:balance}
.hero-h1 em{font-style:italic;background:linear-gradient(transparent 66%,rgba(255,194,75,.55) 66%,rgba(255,194,75,.55) 92%,transparent 92%)}
.hero-sub{font-size:17px;line-height:25px;color:var(--ink2);margin-top:14px;max-width:34ch}
.doors{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.door{min-height:156px;border-radius:24px;background-color:#0B1030;color:#F6F4EF;padding:16px;text-align:left;position:relative;overflow:hidden;isolation:isolate;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:0 18px 38px -16px rgba(11,16,48,.55),0 1px 0 rgba(255,255,255,.08) inset;min-width:0;
  background-image:radial-gradient(110% 80% at 100% 0%,rgba(255,194,75,.2),transparent 60%),radial-gradient(80% 60% at 0% 100%,rgba(53,82,255,.25),transparent 70%)}
:root[data-theme="dark"] .door{background-color:#10163C;box-shadow:0 0 0 1px rgba(255,194,75,.22),0 18px 38px -16px rgba(0,0,0,.8)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .door{background-color:#10163C;box-shadow:0 0 0 1px rgba(255,194,75,.22),0 18px 38px -16px rgba(0,0,0,.8)}}
.door:active{transform:scale(.97)}
.door[aria-pressed="true"]{box-shadow:0 0 0 2.5px var(--gold),0 0 32px -4px rgba(255,194,75,.55),0 18px 38px -16px rgba(11,16,48,.55)}
.door-num{position:absolute;right:-8px;top:-30px;font-family:var(--serif);font-size:128px;line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--gold);z-index:-1;letter-spacing:-.04em;opacity:.95;
  background:linear-gradient(180deg,rgba(255,194,75,.28),transparent 75%);-webkit-background-clip:text;background-clip:text;transition:transform .5s var(--ease)}
.door:hover .door-num,.door[aria-pressed="true"] .door-num{transform:translateY(4px) scale(1.04)}
.door-t{font-weight:600;font-size:17px;line-height:22px}
.door-s{font-size:12px;line-height:16px;color:rgba(246,244,239,.74);margin-top:3px}
.door-ck{position:absolute;top:12px;left:12px;width:26px;height:26px;border-radius:50%;background:var(--gold);color:#0B1030;display:none;place-items:center;box-shadow:0 0 14px rgba(255,194,75,.6)}
.door[aria-pressed="true"] .door-ck{display:grid;animation:pop .4s var(--spring)}
@keyframes pop{from{transform:scale(0)}}
.intents{display:grid;gap:10px}
.intent{display:grid;grid-template-columns:46px minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px;border-radius:20px;background:var(--cardBg);box-shadow:var(--sh);border:1px solid var(--hair);text-align:left;min-width:0}
.intent:active{transform:scale(.98)}
.intent .ig{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;font-family:var(--math);font-size:23px;color:var(--accentText);
  background:linear-gradient(145deg,var(--blueSoft),transparent),var(--paper);box-shadow:0 0 0 1px var(--hair) inset}
.intent.goldi .ig{background:linear-gradient(145deg,#1B2356,#0B1030);color:var(--gold);font-family:var(--serif);box-shadow:0 0 0 1px rgba(255,194,75,.35) inset,0 6px 14px -6px rgba(255,159,46,.5)}
.intent b{display:block;font-size:16px;line-height:21px;font-weight:600}
.intent small{display:block;font-size:13px;line-height:18px;color:var(--ink2);margin-top:1px}
.trust{display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:20px;color:var(--ink2)}
.trust svg{flex:none;margin-top:1px}

/* ============ STAGE (full-bleed ink hero on the first-visit home) ============ */
.stage{position:relative;isolation:isolate;overflow:hidden;color:#F6F4EF;background-color:#0B1030;
  margin:calc(-1 * var(--gt)) calc(50% - 50vw) 0;padding:30px var(--g) 40px;
  background-image:radial-gradient(60% 50% at 90% 10%,rgba(255,194,75,.2),transparent 70%),radial-gradient(70% 60% at 0% 100%,rgba(53,82,255,.28),transparent 70%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;border-bottom:1px solid rgba(255,194,75,.25)}
.stage::after{content:'';position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,194,75,.8),transparent);z-index:1}
.stage .embers i{--o:.95}
.stage-in{max-width:calc(1100px - 2 * var(--g));margin:0 auto;display:grid;gap:28px;min-width:0}
.stage-in>*{min-width:0}
.stage .eyebrow{color:var(--gold)}
.stage .hero-h1{color:#FBF8F1}
.stage .hero-h1 em{background:none;color:var(--gold);position:relative;white-space:nowrap}
.stage .hero-h1 em::after{content:'';position:absolute;left:-2%;right:-2%;bottom:-.12em;height:.32em;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 14' preserveAspectRatio='none'%3E%3Cpath d='M3 9C40 4 90 2 197 6' fill='none' stroke='%23FFC24B' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat left/100% 100%;
  clip-path:inset(0 100% 0 0);animation:swash .9s var(--ease) .5s forwards}
@keyframes swash{to{clip-path:inset(0 0 0 0)}}
.stage .hero-sub{color:rgba(246,244,239,.78)}
/* el subrayado de la cursiva cuelga ~.12em bajo el titular: sin este aire
   pisaba «Write your working» (2026-09-26) */
.stage .hero-h1+.hero-sub{margin-top:26px}
.stage .small.muted,.stage .muted{color:rgba(246,244,239,.7)}
.stage .link{color:var(--gold)}
.sheet-stack{position:relative;min-width:0}
.sheet-stack::before{content:'';position:absolute;inset:8px -4px -8px 10px;border-radius:22px;background:#E9E3D3;transform:rotate(2.2deg);box-shadow:0 20px 40px -18px rgba(0,0,0,.6);z-index:-1}
.paperlike{--surface:#FFFDF8;--cardBg:#FFFDF8;--ink:#0B1030;--ink2:#4A5072;--line:#E6E0D1;--hair:rgba(11,16,48,.07);--accentText:#2B47F0;--blueSoft:rgba(53,82,255,.09);
  --lostbg:#FCEFD9;--lostText:#8A4A0E;--lostNote:#5E3508;color:var(--ink);transform:rotate(-.8deg);
  box-shadow:0 30px 60px -24px rgba(0,0,0,.7),0 2px 6px rgba(0,0,0,.2)!important}

/* ============ MARKED SHEET ============ */
.ms{padding:16px 16px 12px 16px;background:var(--cardBg);min-width:0}
.ms-head{display:flex;justify-content:space-between;gap:10px;font:600 12px/16px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);margin-bottom:8px;padding-bottom:8px;border-bottom:1.5px solid var(--line)}
.ms-q{font-weight:600;margin-bottom:6px;font-size:15px;line-height:22px}
.ms-lines{list-style:none;display:grid;gap:0;min-width:0;padding-left:14px;position:relative}
.ms-lines::before{content:'';position:absolute;left:3px;top:0;bottom:0;width:3px;border-left:1px solid rgba(53,82,255,.28);border-right:1px solid rgba(53,82,255,.28)}
.ms-l{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;min-height:40px;min-width:0;border-bottom:1px solid var(--line)}
.ms-h{font:500 21px/1.2 var(--hand);color:var(--ink);min-width:0;overflow-wrap:anywhere;padding:4px 0}
.ms-l.lost .ms-h{text-decoration:underline wavy var(--lost);text-underline-offset:5px;text-decoration-thickness:1.5px}
.ms-m{flex:none;font:700 13px/1 var(--sans);padding:6px 10px;border-radius:999px;white-space:nowrap;display:inline-flex;align-items:center;gap:4px}
.ms-m.ok{background:var(--blueSoft);color:var(--accentText)}
.ms-m.lost{background:var(--lostbg);color:var(--lostText);box-shadow:0 0 0 1px rgba(217,130,43,.35) inset}
.pen-tick{width:17px;height:17px;overflow:visible;margin:-3px 0 -3px -2px}
.pen-tick path{fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.ms-why{font-size:13px;line-height:18px;color:var(--accentText);margin:4px 0 6px;padding-left:2px;display:flex;gap:6px}
.ms-why::before{content:'↳';opacity:.6}
.ms-note{font-size:14px;line-height:1.45;background:var(--lostbg);color:var(--lostNote);border-left:3px solid var(--lost);border-radius:4px 10px 10px 4px;padding:9px 11px;margin:6px 0 8px}
.ms-foot{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:10px;padding-top:8px;min-width:0}
.ms-got{font:400 36px/1 var(--serif);position:relative;display:inline-block;padding:6px 12px 4px;color:var(--ink)}
.ms-got small{font-size:18px;color:var(--ink2)}
.pen-ring{position:absolute;left:-6px;top:-6px;width:calc(100% + 12px);height:calc(100% + 12px);overflow:visible;pointer-events:none}
.pen-ring path{fill:none;stroke:var(--blue);stroke-width:2.2;stroke-linecap:round;vector-effect:non-scaling-stroke;opacity:.9}
.ms-leak{font-size:14px;color:var(--ink2);min-width:0;flex:1 1 180px}
.ms-leak b{color:var(--lostText)}
/* animation: marks arrive one by one, drawn with the pen */
.ms.anim .ms-m,.ms.anim .ms-note,.ms.anim .ms-why{opacity:0;transform:scale(.7)}
.ms.anim .ms-note,.ms.anim .ms-why{transform:translateY(-4px)}
.ms.anim .pen-tick path,.ms.anim .pen-ring path{stroke-dasharray:1;stroke-dashoffset:1}
.ms.anim .ms-l.lost .ms-h{text-decoration-color:transparent}
.ms.anim.play .ms-m,.ms.anim.play .ms-note,.ms.anim.play .ms-why{animation:msIn .5s var(--spring) forwards;animation-delay:calc(.35s + var(--k,0) * .6s)}
.ms.anim.play .ms-note,.ms.anim.play .ms-why{animation-timing-function:var(--ease)}
.ms.anim.play .pen-tick path{animation:draw .4s var(--ease) forwards;animation-delay:calc(.45s + var(--k,0) * .6s)}
.ms.anim.play .ms-l.lost .ms-h{animation:wavy .6s var(--ease) forwards;animation-delay:calc(.3s + var(--k,0) * .6s)}
.ms.anim.play .pen-ring path{animation:draw .8s var(--ease) forwards;animation-delay:var(--rd,2.2s)}
.ms.anim.play .ms-l{animation:rowflash 1s var(--ease) both;animation-delay:calc(.3s + var(--k,0) * .6s)}
@keyframes msIn{to{opacity:1;transform:none}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes wavy{to{text-decoration-color:var(--lost)}}
@keyframes rowflash{0%,100%{background:transparent}35%{background:linear-gradient(90deg,transparent,var(--blueSoft),transparent)}}
.ms.anim.play .ms-l:not([style*="--k"]){animation:none}

/* score header on marked sheet */
.score{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap}
.score-n{font:400 72px/0.9 var(--serif);letter-spacing:-.03em;position:relative;padding:10px 22px 4px 12px}
.score-n small{font-size:32px;color:var(--ink2)}
.score-n .pen-ring path{stroke-width:2.6}
.score-n .pen-ring path{stroke-dasharray:1;stroke-dashoffset:1;animation:draw .9s var(--ease) .5s forwards}
.score-bar{display:flex;gap:5px;height:10px;margin-top:14px}
.score-bar i{flex:1;border-radius:4px;background:linear-gradient(90deg,var(--blue),#6D84FF);transform-origin:left;animation:barIn .6s var(--ease) backwards}
.score-bar i:nth-child(2){animation-delay:.12s}.score-bar i:nth-child(3){animation-delay:.24s}.score-bar i:nth-child(4){animation-delay:.36s}
.score-bar i.l{background:repeating-linear-gradient(-45deg,var(--lost) 0 3px,var(--lostbg) 3px 6px);box-shadow:0 0 0 1px rgba(217,130,43,.5) inset}
.score-bar i.o{background:var(--line)}
@keyframes barIn{from{transform:scaleX(0)}}

/* leak callout */
.leakcard{border:1.5px solid rgba(217,130,43,.7);background:linear-gradient(160deg,var(--lostbg),transparent 140%),var(--surface);color:var(--lostNote);border-radius:20px;padding:16px;display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:start}
.leakcard .lk{width:38px;height:38px;border-radius:50%;background:linear-gradient(160deg,#F0A04A,var(--lost));color:#fff;display:grid;place-items:center;font-size:0;box-shadow:0 6px 14px -6px rgba(217,130,43,.8)}
.leakcard .lk::before,.leakrow .ic::before{content:'';width:18px;height:18px;background:currentColor;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2.5c3.6 4.6 6.5 8.4 6.5 12a6.5 6.5 0 0 1-13 0c0-3.6 2.9-7.4 6.5-12z'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2.5c3.6 4.6 6.5 8.4 6.5 12a6.5 6.5 0 0 1-13 0c0-3.6 2.9-7.4 6.5-12z'/%3E%3C/svg%3E") center/contain no-repeat}
.leakcard b{display:block;font-size:16px;line-height:21px;color:var(--ink)}
.leakcard p{font-size:14px;line-height:20px;margin-top:2px}
.leakcard .link{color:var(--lostText)}

/* ============ LADDER / STAIRS ============ */
.stairs{display:flex;align-items:flex-end;gap:4px;height:92px;position:relative;min-width:0}
.st{flex:1 1 0;min-width:0;border-radius:5px 5px 2px 2px;background:linear-gradient(180deg,#303872,var(--lqoff));position:relative;transform-origin:bottom;animation:grow .55s var(--spring) backwards;transition:filter .2s,transform .2s var(--ease)}
.st.on{background:linear-gradient(180deg,#FFE3A6,#FFC24B 55%,#F2A23A);box-shadow:0 0 16px -2px rgba(255,194,75,.55),0 1px 0 rgba(255,255,255,.6) inset}
.st.next{background:rgba(255,194,75,.08);border:1.5px dashed var(--gold);animation:grow .55s var(--spring) backwards,nextpulse 2.4s ease-in-out 1s infinite}
@keyframes nextpulse{50%{background:rgba(255,194,75,.22);box-shadow:0 0 18px -2px rgba(255,194,75,.5)}}
.st.you::after{content:'you';position:absolute;top:-22px;left:50%;transform:translateX(-50%);font-size:10px;line-height:14px;font-weight:700;letter-spacing:.06em;color:#0B1030;background:var(--gold);padding:0 5px;border-radius:5px;box-shadow:0 2px 8px rgba(255,159,46,.5)}
.st.top::before{content:'✦';position:absolute;top:-20px;left:50%;transform:translateX(-50%);font-size:13px;color:rgba(255,194,75,.7);animation:twinkle 3s ease-in-out infinite}
@keyframes twinkle{50%{opacity:.35;transform:translateX(-50%) scale(.8)}}
.stairs .st[data-r]{cursor:pointer}
@media (hover:hover){.stairs .st:hover{filter:brightness(1.25);transform:translateY(-2px)}}
.st.sel{outline:2px solid #fff;outline-offset:1px}
@keyframes grow{from{transform:scaleY(.1);opacity:0}}
.zones{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;margin-top:10px;font-size:11px;line-height:14px;color:rgba(246,244,239,.62)}
.zones span{border-top:1px solid rgba(246,244,239,.2);padding-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.zones span.cur{color:var(--gold);border-top:2px solid var(--gold);padding-top:5px}
.part{border-radius:20px;background:var(--cardBg);box-shadow:var(--sh);border:1px solid var(--hair);min-width:0;overflow:hidden;transition:box-shadow .25s}
.part[open]{box-shadow:var(--shHover)}
.part>summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:14px}
.part>summary::-webkit-details-marker{display:none}
.part .pl{font-family:var(--serif);font-style:italic;font-size:22px;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:var(--paper);box-shadow:0 0 0 1px var(--hair) inset}
.part.done .pl{background:linear-gradient(160deg,#FFD98A,var(--gold));color:#0B1030;box-shadow:0 4px 10px -4px rgba(255,159,46,.6)}
.part .pt b{display:block;font-size:15px;line-height:20px;font-weight:600}
.part .pt small{display:block;font-size:12px;line-height:16px;color:var(--ink2)}
.part .pbody{padding:0 14px 14px;display:grid;gap:12px}
.rungs{display:flex;gap:3px}
.rungs i{width:12px;height:12px;border-radius:3px;background:var(--line)}
.rungs i.on{background:var(--gold);box-shadow:0 0 6px rgba(255,194,75,.5)}
.hints{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.hintb{min-height:36px;padding:0 12px;border-radius:12px;border:1.5px dashed var(--ink2);font-size:13px;font-weight:600;color:var(--ink2);transition:border-color .2s,color .2s}
.hintb:not(:disabled):hover{border-color:var(--blue);color:var(--accentText)}
.hintb.f1{opacity:.75}.hintb.f2{opacity:.5}
.hintb:disabled{opacity:.25;cursor:default}
.hintbox{background:var(--blueSoft);border-radius:12px;padding:10px 12px;font-size:14px;line-height:20px;animation:popIn .3s var(--ease)}

/* ============ QUESTION / WORKSHEET ============ */
.qcard{background:var(--cardBg);border-radius:22px;box-shadow:var(--sh);border:1px solid var(--hair);padding:18px;min-width:0;position:relative;overflow:hidden}
.qcard::before{content:'';position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;background:linear-gradient(180deg,var(--blue),#8FA1FF)}
.qmeta{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.qtext{font-family:var(--math);font-size:21px;line-height:32px;margin-top:12px;overflow-wrap:anywhere}
.qtext .rm{font-family:var(--sans);font-size:16px;line-height:24px}
.qparts{list-style:none;display:grid;gap:8px;margin-top:10px}
.qparts li{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:6px;align-items:baseline;font-size:16px;line-height:24px}
.qparts li .pm{font-size:12px;color:var(--ink2);white-space:nowrap}
.clock{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 12px;border-radius:999px;border:1.5px solid var(--line);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;background:var(--surface)}
.clock.on{border-color:var(--ink)}
.drop{display:grid;place-items:center;text-align:center;gap:8px;min-height:180px;border:2px dashed var(--r2);border-radius:20px;padding:20px;width:100%;transition:border-color .2s,background .2s;
  background:radial-gradient(60% 70% at 50% 0%,var(--blueSoft),transparent 70%),var(--surface2)}
.drop:hover,.drop.over{border-color:var(--blue);background:var(--blueSoft)}
.drop .cam{width:60px;height:60px;border-radius:50%;background:linear-gradient(180deg,#4A66FF,var(--blueDeep));color:#fff;display:grid;place-items:center;box-shadow:0 0 0 8px var(--blueSoft),0 12px 24px -8px rgba(53,82,255,.6);transition:transform .3s var(--spring)}
.drop:hover .cam{transform:scale(1.08)}
.drop b{font-size:16px}
.drop small{font-size:13px;color:var(--ink2)}
.photo{position:relative;border-radius:14px;background:#FDFCF7;color:#1B2150;padding:14px 16px;box-shadow:0 2px 10px rgba(11,16,48,.12),0 18px 30px -18px rgba(11,16,48,.35);transform:rotate(-.6deg);background-image:repeating-linear-gradient(transparent 0 31px,#D8DDEB 31px 32px);min-width:0;overflow:hidden;animation:popIn .35s var(--ease)}
.photo p{font:500 22px/32px var(--hand);overflow-wrap:anywhere}
.photo .x{position:absolute;top:8px;right:8px;width:30px;height:30px;border-radius:50%;background:rgba(11,16,48,.7);color:#fff;display:grid;place-items:center;font-size:14px}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:8px}
.thumb{aspect-ratio:3/4;border-radius:10px;background:#FDFCF7;background-image:repeating-linear-gradient(transparent 0 9px,#D8DDEB 9px 10px);box-shadow:0 1px 6px rgba(11,16,48,.15);position:relative;overflow:hidden;min-width:0;padding:8px;color:#1B2150;font:500 12px/1.2 var(--hand)}
.thumb span{position:absolute;left:6px;bottom:6px;font:600 10px/1 var(--sans);background:rgba(11,16,48,.75);color:#fff;padding:3px 6px;border-radius:6px}
.thumb.add{background:var(--surface2);border:2px dashed var(--r2);box-shadow:none;display:grid;place-items:center;font:600 13px var(--sans);color:var(--accentText);transition:border-color .2s,background .2s}
.thumb.add:hover{border-color:var(--blue);background:var(--blueSoft)}
.pad-wrap{border-radius:18px;border:1.5px solid var(--line);background:#FDFCF7;overflow:hidden;min-width:0}
.pad-tools{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px;border-bottom:1px solid #E6E3DA;background:#F8F6EF;color:#1B2150}
.pad-tools button{min-height:36px;padding:0 10px;border-radius:10px;font-size:13px;font-weight:600}
.pad-tools button:active{background:rgba(53,82,255,.12)}
canvas.pad{display:block;width:100%;height:320px;touch-action:none;background-image:repeating-linear-gradient(transparent 0 31px,#E3E6EF 31px 32px);cursor:crosshair}
textarea.typed{width:100%;min-height:150px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);padding:12px 14px;font:400 16px/24px var(--sans);resize:vertical;outline:none;color:var(--ink)}
textarea.typed:focus{border-color:var(--blue);box-shadow:0 0 0 4px var(--blueSoft)}
.recommend{font-size:13px;line-height:18px;color:var(--ink2);display:flex;gap:8px;align-items:flex-start}

/* ============ OPTIONS (MCQ + starts) ============ */
.opts{display:grid;gap:9px}
.opt{display:grid;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:12px;min-height:60px;padding:10px 14px;border-radius:17px;border:1.5px solid var(--line);background:var(--cardBg);text-align:left;transition:border-color .2s,background .2s,opacity .2s,transform .15s var(--ease),box-shadow .2s;min-width:0;width:100%}
.opt .ol{width:32px;height:32px;border-radius:10px;background:var(--paper);display:grid;place-items:center;font:600 13px var(--sans);color:var(--ink2);box-shadow:0 0 0 1px var(--hair) inset;transition:background .2s,color .2s}
.opt .ot{font-family:var(--math);font-size:19px;line-height:26px;min-width:0;overflow-wrap:anywhere}
.opt .ot.sans{font-family:var(--sans);font-size:15px;line-height:21px}
.opt .om{font-size:12px;font-weight:700;white-space:nowrap}
.opt:not(:disabled):hover{border-color:var(--r3);transform:translateX(2px);box-shadow:var(--sh)}
.opt:not(:disabled):active{transform:scale(.985)}
.opt.sel{border-color:var(--ink)}
.opt.sel .ol{background:var(--ink);color:var(--paper)}
.opt.right{border-color:var(--blue);background:var(--blueSoft);animation:rightIn .5s var(--spring)}
.opt.right .ol{background:var(--blue);color:#fff}
.opt.right .om{color:var(--accentText)}
@keyframes rightIn{40%{transform:scale(1.02)}}
.opt.other{border-color:var(--lost);background:var(--lostbg)}
.opt.other .ol{background:var(--lost);color:#2A1603}
.opt.other .om{color:var(--lostText)}
.opt.fade{opacity:.5}
.opt:disabled{cursor:default}
.why{background:var(--cardBg);border-radius:20px;box-shadow:var(--sh);border:1px solid var(--hair);padding:16px;animation:popIn .3s var(--ease);min-width:0}
.why h3{font-size:16px;line-height:22px;font-weight:600}
.why p,.why li{font-size:14px;line-height:21px;color:var(--ink2)}
.why ul{padding-left:18px;margin-top:6px;display:grid;gap:4px}
.work{font-family:var(--math);font-size:18px;line-height:30px;display:grid;gap:2px;margin-top:8px;overflow-wrap:anywhere}
.progress-dots{display:flex;gap:6px}
.progress-dots i{width:22px;height:5px;border-radius:3px;background:var(--line);transition:background .3s,width .3s var(--ease)}
.progress-dots i.on{background:var(--ink)}
.progress-dots i.cur{background:var(--blue);width:30px}
.ring45{position:relative;width:44px;height:44px;flex:none}
.ring45 svg{transform:rotate(-90deg)}
.ring45 span{position:absolute;inset:0;display:grid;place-items:center;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
@keyframes popIn{from{opacity:0;transform:translateY(-4px)}}

/* ============ PROGRESS / ESTIMATE ============ */
.range-big{font:400 60px/1 var(--serif);letter-spacing:-.03em}
.range-big small{font-size:26px;color:var(--ink2);letter-spacing:0}
.trend{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:600;color:var(--accentText);background:var(--blueSoft);padding:3px 9px;border-radius:999px;white-space:nowrap}
.chart{width:100%;height:auto;display:block;margin-top:10px;overflow:visible}
.chart .band{fill:var(--blueSoft);stroke:none}
.chart .mid{fill:none;stroke:var(--blue);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.chart .grid{stroke:var(--line);stroke-width:1;stroke-dasharray:2 4}
.chart text{fill:var(--ink2);font:500 11px var(--sans)}
.chart .edge{fill:none;stroke:var(--r2);stroke-width:1;stroke-dasharray:3 3}
.chart .draw{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.2s var(--ease) .2s forwards}
.chart .dot{fill:var(--blue);stroke:var(--surface);stroke-width:2}
.chart .halo{fill:var(--blue);opacity:.18;transform-box:fill-box;transform-origin:center;animation:halo 2.4s ease-out 1.4s infinite}
@keyframes halo{0%{transform:scale(.6);opacity:.35}100%{transform:scale(1.8);opacity:0}}
/* range track: where the estimate sits on the whole paper, and where it was */
.rtrack{position:relative;height:14px;border-radius:999px;background:var(--paper);box-shadow:0 0 0 1px var(--hair) inset;margin-top:18px}
.rtrack .prev,.rtrack .now{position:absolute;top:0;bottom:0;left:var(--lo);width:calc(var(--hi) - var(--lo));border-radius:999px}
.rtrack .prev{left:var(--plo);width:calc(var(--phi) - var(--plo));border:1.5px dashed var(--r3);background:transparent;top:-3px;bottom:-3px;opacity:.8}
.rtrack .now{background:linear-gradient(90deg,#6D84FF,var(--blue));box-shadow:0 0 0 2px var(--surface),0 6px 16px -4px rgba(53,82,255,.6);transform-origin:left;animation:barIn .9s var(--ease) .3s backwards}
.rtrack-l{display:flex;justify-content:space-between;font-size:11px;line-height:14px;color:var(--ink2);margin-top:8px;font-variant-numeric:tabular-nums}
.leakrow .ic{background:var(--lostbg);color:var(--lostText);font-size:0;box-shadow:0 0 0 1px rgba(217,130,43,.25) inset}
.minibars{display:flex;gap:3px;align-items:flex-end;height:22px}
.minibars i{width:6px;border-radius:2px;background:var(--lost);opacity:.85}
.sheetrow .ic{font-size:14px;font-family:var(--sans);font-weight:700;width:50px;background:var(--blueSoft);color:var(--accentText);box-shadow:0 0 0 1px rgba(53,82,255,.15) inset}
.weeks{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.wk{width:32px;height:32px;border-radius:10px;background:linear-gradient(160deg,#4A66FF,var(--blueDeep));display:grid;place-items:center;font-size:11px;font-weight:600;color:#fff;box-shadow:0 4px 10px -4px rgba(53,82,255,.6)}
.wk.gap{background:transparent;border:1.5px dashed var(--r0);color:var(--ink2);box-shadow:none}
.wk.now{background:transparent;border:2px solid var(--blue);color:var(--accentText);box-shadow:0 0 0 4px var(--blueSoft)}

/* ============ PLAN ============ */
.day{display:grid;grid-template-columns:54px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);min-width:0}
.day:last-child{border-bottom:0}
.dd{text-align:center;border-radius:14px;padding:6px 0;background:var(--paper);box-shadow:0 0 0 1px var(--hair) inset}
.dd b{display:block;font-size:19px;line-height:22px;font-family:var(--serif);font-weight:400}
.dd small{display:block;font-size:10px;line-height:14px;color:var(--ink2);text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.day.today .dd{background:linear-gradient(180deg,#4A66FF,var(--blueDeep));color:#fff;box-shadow:0 8px 18px -8px rgba(53,82,255,.7)}
.day.today .dd small{color:rgba(255,255,255,.85)}
.day.done .dd{background:var(--blueSoft)}
.day.skip .tx b{color:var(--ink2)}
.day .tx b{display:block;font-size:15px;line-height:20px;font-weight:600}
.day .tx small{display:block;font-size:13px;line-height:18px;color:var(--ink2)}
.tick{width:24px;height:24px;border-radius:50%;background:var(--blue);display:grid;place-items:center;color:#fff;flex:none;font-size:13px;box-shadow:0 4px 10px -4px rgba(53,82,255,.7)}
.session{list-style:none;display:grid;gap:0;margin-top:10px}
.session li{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:10px;align-items:center;min-height:56px;border-bottom:1px solid var(--line)}
.session li:last-child{border-bottom:0}
.session .sp{font-family:var(--serif);font-style:italic;font-size:21px;color:var(--ink2);text-align:center}
.session b{display:block;font-size:15px;line-height:20px;font-weight:600}
.session small{display:block;font-size:12px;line-height:16px;color:var(--ink2)}
.session .skey{width:10px;height:10px;border-radius:3px}
.session .smin{font-size:12px;font-weight:600;color:var(--ink2);font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.k-fix{background:var(--lost)}.k-mix{background:#9AABFF}.k-climb{background:var(--gold)}.k-twin{background:var(--blue)}
/* session timeline: tonight's minutes as one bar */
.tl{display:flex;gap:4px;height:8px;margin-top:16px}
.tl i{border-radius:4px;flex:var(--m) 1 0;transform-origin:left;animation:barIn .7s var(--ease) backwards}
.tl i:nth-child(2){animation-delay:.1s}.tl i:nth-child(3){animation-delay:.2s}.tl i:nth-child(4){animation-delay:.3s}

/* ink variant of the tonight card (home) */
.ink .session li{border-color:rgba(246,244,239,.1)}
.ink .session .sp{color:var(--gold)}
.ink .session small,.ink .session .smin{color:rgba(246,244,239,.66)}
.ink .k-twin{background:#6D84FF}

/* ============ FORMS ============ */
.field{display:block;min-width:0}
.field>span{display:block;font-size:13px;font-weight:600;color:var(--ink2);margin-bottom:6px}
.field input,.field select{width:100%;height:52px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);padding:0 14px;font-size:16px;outline:none;color:var(--ink);min-width:0;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 4px var(--blueSoft)}
.field .help{font-size:12px;line-height:16px;color:var(--ink2);margin-top:6px;display:block}
.pin{display:grid;grid-template-columns:repeat(4,minmax(0,56px));gap:10px}
.pin input{text-align:center;font-size:22px;font-weight:600;padding:0;-webkit-text-security:disc}
.check{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:center;padding:14px;border-radius:16px;border:1.5px solid var(--line);background:var(--surface);cursor:pointer;min-width:0;transition:border-color .2s,background .2s}
.check input{width:22px;height:22px;accent-color:var(--blue)}
.check b{display:block;font-size:15px;line-height:20px}
.check small{display:block;font-size:13px;line-height:18px;color:var(--ink2)}
.check:has(input:checked){border-color:var(--blue);background:var(--blueSoft)}

/* save prompt (D4) */
.save{border-radius:22px;padding:18px;background-color:var(--inkPanel);color:#F6F4EF;box-shadow:var(--shInk);display:grid;gap:12px;min-width:0;position:relative;overflow:hidden;isolation:isolate;
  background-image:radial-gradient(80% 90% at 100% 0%,rgba(255,194,75,.18),transparent 60%)}
.save p{font-size:15px;line-height:21px}
.save p b{font-family:var(--serif);font-weight:400;font-size:24px;line-height:28px;display:block;margin-bottom:4px}
.save p small{display:block;color:rgba(246,244,239,.72);font-size:13px;line-height:18px;margin-top:2px}
.save .muted,.save a.small{color:rgba(246,244,239,.72)!important}
.save-f{display:grid;grid-template-columns:minmax(0,1fr) 92px;gap:8px}
.save-f input{height:50px;border-radius:13px;border:1.5px solid rgba(246,244,239,.2);background:rgba(255,255,255,.06);color:#F6F4EF;padding:0 12px;font-size:16px;outline:none;min-width:0;width:100%;transition:border-color .2s,box-shadow .2s}
.save-f input::placeholder{color:rgba(246,244,239,.55)}
.save-f input:focus{border-color:var(--gold);box-shadow:0 0 0 4px rgba(255,194,75,.15)}
.save .btn-gold{width:100%}
.saved{display:flex;gap:10px;align-items:center;font-size:14px;line-height:20px;color:var(--ink2)}

/* ============ DETAILS ============ */
details.fold{border-radius:20px;background:var(--cardBg);box-shadow:var(--sh);border:1px solid var(--hair);min-width:0}
details.fold>summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:16px;font-weight:600}
details.fold>summary::-webkit-details-marker{display:none}
details.fold>summary .chev{transition:transform .25s var(--ease)}
details.fold[open]>summary .chev{transform:rotate(90deg)}
details.fold>.fb{padding:0 16px 16px;animation:popIn .3s var(--ease)}
.topic{border-radius:20px;background:var(--cardBg);box-shadow:var(--sh);border:1px solid var(--hair);min-width:0;transition:box-shadow .25s}
.topic[open]{box-shadow:var(--shHover)}
.topic>summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 14px}
.topic>summary::-webkit-details-marker{display:none}
.topic .tg{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-family:var(--math);font-style:italic;font-size:20px;color:var(--accentText);
  background:linear-gradient(145deg,var(--blueSoft),transparent),var(--paper);box-shadow:0 0 0 1px var(--hair) inset}
.topic b{display:block;font-size:16px;line-height:21px;font-weight:600}
.topic small{display:block;font-size:12px;line-height:16px;color:var(--ink2)}
.topic[open] .chev{transform:rotate(90deg)}
.topic .chev{transition:transform .25s var(--ease)}
.subs{padding:0 14px 12px;display:grid;gap:0;animation:popIn .3s var(--ease)}
.sub{padding:10px 0;border-top:1px solid var(--line);display:grid;gap:8px;min-width:0}
.sub-t{font-size:14px;font-weight:600;display:flex;justify-content:space-between;gap:8px}
.diffs{display:flex;flex-wrap:wrap;gap:6px}
.diffs a{min-height:34px;padding:0 10px;border-radius:11px;border:1.5px solid var(--line);font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:border-color .2s,color .2s,background .2s}
.diffs a:hover{border-color:var(--blue);color:var(--accentText);background:var(--blueSoft)}
.diffs a i{display:inline-flex;gap:2px;align-items:flex-end}
.diffs a i b{width:4px;border-radius:1px;background:var(--r3);display:block;height:10px}
.diffs a i b:nth-child(1){height:5px}.diffs a i b:nth-child(2){height:8px}.diffs a i b:nth-child(3){height:11px}.diffs a i b:nth-child(4){height:14px}
.diffs a i b.o{background:var(--line)}
.modes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.mode{min-height:132px;border-radius:20px;background:var(--cardBg);box-shadow:var(--sh);border:1px solid var(--hair);padding:14px;display:flex;flex-direction:column;justify-content:space-between;gap:8px;text-align:left;min-width:0;overflow:hidden;position:relative;isolation:isolate}
.mode:active{transform:scale(.97)}
.mode b{font-size:15px;line-height:20px;font-weight:600;display:block}
.mode small{font-size:12px;line-height:16px;color:var(--ink2);display:block}
.mode .mg{font-family:var(--math);font-style:italic;font-size:24px;line-height:1;color:var(--accentText);min-width:44px;height:44px;padding:0 8px;white-space:nowrap;align-self:flex-start;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--blueSoft),transparent),var(--paper);box-shadow:0 0 0 1px var(--hair) inset}
.deck{position:relative;height:44px}
.deck span{position:absolute;left:0;top:6px;width:42px;height:30px;border-radius:7px;background:var(--surface);border:1px solid var(--line);font-family:var(--math);font-size:14px;display:grid;place-items:center;box-shadow:0 2px 6px rgba(11,16,48,.08);transition:transform .35s var(--spring)}
.deck span:nth-child(1){transform:rotate(-10deg)}
.deck span:nth-child(2){transform:rotate(-2deg) translateX(10px)}
.deck span:nth-child(3){transform:rotate(7deg) translateX(20px);color:var(--accentText)}
.mode:hover .deck span:nth-child(1){transform:rotate(-16deg) translateX(-2px)}
.mode:hover .deck span:nth-child(3){transform:rotate(12deg) translateX(30px)}

/* ============ EXAM ============ */
.exam-q{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.exam-q:last-child{border-bottom:0}
.exam-q .qn{font:600 14px var(--sans);width:48px;height:40px;border-radius:12px;background:var(--paper);display:grid;place-items:center;box-shadow:0 0 0 1px var(--hair) inset}
.exam-q.snapped .qn{background:var(--blueSoft);color:var(--accentText)}
.bigclock{font:400 60px/1 var(--serif);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.sumbar{display:flex;height:10px;border-radius:5px;overflow:hidden;background:var(--line);gap:2px}
.sumbar i{background:var(--blue)}
.sumbar i.l{background:repeating-linear-gradient(-45deg,var(--lost) 0 3px,var(--lostbg) 3px 6px)}
.qsum{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.qsum:last-child{border-bottom:0}
.qsum .qn{font-weight:700;font-size:15px}
.qsum .bar{display:flex;gap:2px;height:8px}
.qsum .bar i{flex:1;border-radius:2px;background:var(--blue)}
.qsum .bar i.l{background:var(--lost);opacity:.55}
.qsum small{display:block;font-size:12px;line-height:16px;color:var(--ink2);margin-top:4px}
.breathe{width:120px;height:120px;border-radius:50%;margin:10px auto;border:2px solid var(--gold);display:grid;place-items:center;animation:breathe 8s ease-in-out infinite;box-shadow:0 0 30px -8px rgba(255,194,75,.5)}
@keyframes breathe{50%{transform:scale(1.15);background:rgba(255,194,75,.1)}}

/* ============ NOTES ============ */
.notecard{display:grid;gap:12px}
.cmp{display:grid;gap:10px}
.cmp>div{border-radius:16px;padding:14px;min-width:0}
.cmp .no{background:var(--lostbg);color:var(--lostNote);border-left:3px solid var(--lost)}
.cmp .yes{background:var(--blueSoft);border-left:3px solid var(--blue)}
.cmp .lab{font:700 11px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.cmp .no .lab{color:var(--lostText)}
.cmp .yes .lab{color:var(--accentText)}
.cmp .hand{font-size:22px;line-height:1.3;color:var(--ink);overflow-wrap:anywhere}

/* ============ OVERLAYS ============ */
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom));transform:translate(-50%,16px);opacity:0;background:var(--ink);color:var(--paper);padding:12px 16px;border-radius:14px;font-size:14px;line-height:20px;max-width:calc(100vw - 32px);width:max-content;z-index:90;pointer-events:none;transition:opacity .22s var(--ease),transform .3s var(--spring);box-shadow:0 14px 30px -10px rgba(11,16,48,.5)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.sheet{position:fixed;inset:0;z-index:70;display:none}
.sheet.open{display:block}
.sheet-bg{position:absolute;inset:0;background:rgba(7,10,28,.5);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fade .22s}
.sheet-p{position:absolute;left:0;right:0;bottom:0;background:var(--surface);border-radius:26px 26px 0 0;padding:10px 20px calc(24px + env(safe-area-inset-bottom));max-height:88vh;overflow:auto;animation:up .35s var(--ease);box-shadow:0 -20px 50px -20px rgba(0,0,0,.4)}
.handle{width:40px;height:4px;border-radius:2px;background:var(--line);margin:0 auto 16px}
.sheet-p h2{font-family:var(--serif);font-weight:400;font-size:30px;line-height:34px}
.sheet-p .sub{font-size:14px;line-height:20px;color:var(--ink2);margin:6px 0 16px}
@keyframes up{from{transform:translateY(100%)}}
@keyframes fade{from{opacity:0}}
/* marking overlay: the pen goes down the page */
.marking{position:fixed;inset:0;z-index:95;display:none;place-items:center;padding:24px;text-align:center;color:#F6F4EF;background-color:#0B1030;isolation:isolate;overflow:hidden;
  background-image:radial-gradient(60% 45% at 50% 30%,rgba(255,194,75,.16),transparent 70%),radial-gradient(70% 50% at 50% 110%,rgba(53,82,255,.3),transparent 70%)}
.marking.open{display:grid;animation:fade .25s}
.marking h2{font-family:var(--serif);font-weight:400;font-size:36px;line-height:40px;margin-top:22px}
.marking p{color:rgba(246,244,239,.72);font-size:14px;margin-top:6px}
.mk-sheet{width:210px;margin:0 auto;border-radius:14px;background:#FFFDF8;padding:16px 14px;display:grid;gap:12px;box-shadow:0 30px 60px -20px rgba(0,0,0,.7);transform:rotate(-2deg)}
.mk-row{display:grid;grid-template-columns:minmax(0,1fr) 20px;gap:10px;align-items:center}
.mk-row i{height:7px;border-radius:4px;background:#D9DCEA;width:var(--w)}
.mk-row svg{width:20px;height:20px}
.mk-row path{fill:none;stroke:#3552FF;stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw .3s var(--ease) forwards;animation-delay:var(--d)}
.mk-row.lost i{background:repeating-linear-gradient(90deg,#F1C48E 0 6px,#FBE3C4 6px 9px)}
.mk-row.lost path{stroke:#D9822B}
.pen{width:64px;height:64px;margin:0 auto;border-radius:50%;border:3px solid var(--line);border-top-color:var(--blue);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.rise{animation:rise .55s var(--ease) backwards;animation-delay:calc(var(--i,0) * 70ms)}
@keyframes rise{from{opacity:0;transform:translateY(12px)}}

.foot{text-align:center;font-size:13px;line-height:20px;color:var(--ink2);padding-top:8px}
.foot nav{display:flex;flex-wrap:wrap;justify-content:center;gap:0 14px;margin-top:4px}
.foot nav a{min-height:40px;display:inline-flex;align-items:center;font-weight:500;color:var(--ink)}

/* ============ WIDER SCREENS ============ */
@media (min-width:640px){
  :root{--g:28px;--gt:20px}
  .grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .modes{grid-template-columns:repeat(3,minmax(0,1fr))}
  .intents{grid-template-columns:repeat(3,minmax(0,1fr))}
  .intent{grid-template-columns:46px minmax(0,1fr);align-content:start}
  .intent .chev,.intent>span:last-child[aria-hidden]{display:none}
  .cmp{grid-template-columns:repeat(2,minmax(0,1fr))}
  .door{min-height:196px}
  .door-num{font-size:168px}
  .hero-h1{font-size:62px;line-height:60px}
  .page-h{font-size:50px;line-height:52px}
  .ms-h{font-size:23px}
}
@media (min-width:1024px){
  :root{--g:40px;--gt:32px}
  body{padding-left:92px}
  .rail{display:flex;flex-direction:column;align-items:center;position:fixed;left:0;top:0;bottom:0;width:92px;padding:18px 0 20px;gap:6px;background:var(--surface);border-right:1px solid var(--hair);z-index:40}
  .rail .rlogo{margin-bottom:18px;color:#F6F4EF;display:grid;place-items:center;width:56px;height:56px;border-radius:16px;background:linear-gradient(145deg,#1B2356,#0B1030);box-shadow:0 0 0 1px rgba(255,194,75,.3) inset,0 10px 20px -10px rgba(11,16,48,.6)}
  .rail .tab{width:76px;height:64px;border-radius:16px}
  .rail .tab::before{top:8px;width:52px;height:30px}
  .rail .tab:hover{color:var(--ink)}
  .appbar .wordmark svg{display:none}
  .tabbar{display:none}
  body.focus{padding-left:0}
  body.focus .rail{display:none}
  body.focus .appbar .wordmark svg{display:inline}
  .wrap{padding:var(--gt) var(--g) 64px}
  .toast{bottom:32px}
  .sheet-p{left:50%;top:50%;bottom:auto;right:auto;width:460px;transform:translate(-50%,-50%);border-radius:26px;padding:28px;animation:popc .28s var(--ease)}
  .handle{display:none}
  @keyframes popc{from{opacity:0;transform:translate(-50%,-47%)}}
  .two{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:28px;align-items:start}
  .two>*{min-width:0}
  .hero-h1{font-size:76px;line-height:72px}
  .stage{margin-left:calc(50% - 50vw + 46px);margin-right:calc(50% - 50vw + 46px);padding:56px var(--g) 64px}
  /* arriba, no centrado: la hoja de muestra mide ~900 px y centrar dejaba
     ~285 px de negro sobre el titular (2026-09-26) */
  .stage-in{grid-template-columns:minmax(0,6fr) minmax(0,5fr);column-gap:56px;align-items:start}
  .stage .a-hero{padding-top:12px}
  .stage .hero-h1+.hero-sub{margin-top:34px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0ms!important;animation-iteration-count:1!important;transition-duration:.12s!important}
  .ms.anim .ms-m,.ms.anim .ms-note,.ms.anim .ms-why{opacity:1;transform:none}
  .ms.anim .pen-tick path,.ms.anim .pen-ring path,.score-n .pen-ring path,.mk-row path,.chart .draw{stroke-dashoffset:0}
  .ms.anim .ms-l.lost .ms-h{text-decoration-color:var(--lost)}
  .stage .hero-h1 em::after{clip-path:none}
  .embers{display:none}
}

/* course-specific content: elements tagged data-c show only for the active course */
html[data-course="ext1"] [data-c="ext2"],html[data-course="ext2"] [data-c="ext1"]{display:none!important}
.mode.ink{background-color:var(--lqbg);background-image:radial-gradient(120% 80% at 100% 0%,rgba(255,194,75,.2),transparent 60%),radial-gradient(80% 60% at 0% 100%,rgba(53,82,255,.25),transparent 70%);color:#F6F4EF;border:0;box-shadow:var(--shInk)}
.mode.ink small{color:rgba(246,244,239,.72)}
.mode.ink .mg{background:rgba(255,194,75,.12);box-shadow:0 0 0 1px rgba(255,194,75,.35) inset;color:var(--gold);font-family:var(--serif);font-style:normal}
/* the first step (D128): stage of a family, and help that steps back */
.stage-pill{display:inline-flex;align-items:center;gap:7px;font-size:12px;line-height:16px;font-weight:700;padding:4px 10px 4px 8px;border-radius:999px;white-space:nowrap;background:var(--blueSoft);color:var(--accentText)}
.stage-pill.s3{background:rgba(255,194,75,.2);color:var(--goldText)}
.arranques-linea{padding:4px 4px 8px;border-bottom:1px solid var(--line)}
.stage-dots{display:inline-flex;gap:3px}
.stage-dots i{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.25}
.stage-dots i.on{opacity:1}
.fam-li{grid-template-columns:minmax(0,1fr) auto}
.fam-li .li-main{display:grid;gap:2px;min-width:0}
.fam-li .li-main b{font-size:15px;line-height:20px}
.routine{border:1.5px dashed var(--line);border-radius:14px;padding:12px 14px;display:grid;gap:10px}
.routine ol{list-style:none;display:grid;gap:8px;counter-reset:rq}
.routine li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:8px;font-size:14px;line-height:20px;counter-increment:rq}
.routine li::before{content:counter(rq);font-family:var(--serif);font-size:18px;line-height:20px;color:var(--accentText)}
.routine .ans{display:block;color:var(--ink2);font-size:13px;margin-top:2px}
.routine .ans b{color:var(--ink)}
.firstline{display:grid;gap:8px}
.firstline textarea{min-height:64px;font-family:var(--hand);font-size:22px;line-height:28px}
.stage-up{display:grid;gap:8px;justify-items:start;border-radius:14px;padding:12px 14px;background:var(--blueSoft);color:var(--ink)}
.stage-up b{display:block;font-size:15px}
.stage-up small{color:var(--ink2);font-size:13px;line-height:19px}
.signal{margin-top:6px;font-size:13px;line-height:19px;color:var(--ink2)}
.signal b{color:var(--ink)}

/* ── D131: la carcasa en la app real ── */
.cseg a{height:30px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;color:var(--ink2);white-space:nowrap;display:inline-flex;align-items:center;text-decoration:none;transition:background .25s var(--ease),color .25s}
.cseg a[aria-current]{background:var(--ink);color:var(--paper);box-shadow:0 2px 6px rgba(11,16,48,.25)}
.appbar a,.tabbar a,.rail a{text-decoration:none}
body.atril-examen .appbar,body.atril-examen .tabbar,body.atril-examen .rail{display:none}
@media (max-width:1023px){
  body:has(.tabbar) .botonera{bottom:calc(66px + env(safe-area-inset-bottom));z-index:39}
  body:has(.tabbar) #pantalla{padding-bottom:calc(66px + 1.2rem + env(safe-area-inset-bottom))}
  body:has(.tabbar) #pantalla:has(.botonera){padding-bottom:calc(66px + var(--alto-accion) + 1.2rem + env(safe-area-inset-bottom))}
}
.d2 #pantalla{max-width:none;padding:0;display:block;min-height:0;margin-left:0;margin-right:0}

/* ── D131: la Home (del prototipo home.html) ── */
.tonight-h{font-family:var(--serif);font-weight:400;font-size:32px;line-height:36px;margin-top:6px;letter-spacing:-.01em}
.because{display:flex;gap:10px;margin:14px 0 0;font-size:13px;line-height:19px;color:var(--ink2)}
.ink .because{color:rgba(246,244,239,.76)}
.tonight{padding:22px 20px}
.tonight .tonight-h{color:#FBF8F1}
.tonight .session{margin:14px 0 16px}
.home-cab{margin-bottom:18px}
@media (min-width:1024px){.tonight-h{font-size:40px;line-height:44px}}
@media (max-width:1023px){.home-two{display:grid;gap:24px}.home-two>.stack{display:contents}}
.list .vacio{padding:14px 4px;display:grid;gap:10px;justify-items:start}
.semana{list-style:none;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;margin-top:12px}
.semana .dia{display:grid;gap:2px;justify-items:center;padding:8px 2px;border-radius:12px;background:var(--surface2);border:1px solid var(--line);font-size:11px;line-height:14px;text-align:center}
.semana .dia .d{font-weight:700;color:var(--ink2)}
.semana .dia .k{color:var(--ink);overflow-wrap:anywhere}
.semana .dia.hoy{border-color:var(--blue);background:var(--blueSoft)}
.semana .dia.hecha .k::before{content:"✓ ";color:var(--accentText)}
.semana .dia.k-rest .k{color:var(--ink2)}
.hsc-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center}
.hsc-card .q{width:38px;height:38px;border-radius:12px;background:var(--paper);display:grid;place-items:center;font-family:var(--serif);font-size:20px}
.hsc-card b{display:block;font-size:15px}
.guardar{margin-top:4px}
.guardar .link{white-space:normal}   /* la frase es larga: a 375 se salía del margen */

/* ── D131: Practise (del prototipo practise.html) ── */
.mixcard{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center}
.mixcard b{display:block;font-size:18px;line-height:24px;margin-top:4px}
.mixcard small{display:block;margin-top:2px}
.lqcard .lq-line{font-family:var(--serif);font-size:28px;line-height:32px;margin-top:8px;max-width:16ch;color:#FBF8F1}
.lq-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;flex-wrap:wrap}
.examrow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
.examopt{border-radius:16px;border:1.5px solid var(--line);padding:12px;display:block;min-width:0}
.examopt.ancho{grid-column:1 / -1}
.examopt:hover{border-color:var(--blue)}
.examopt b{display:block;font-size:15px;line-height:20px}
.examopt small{display:block;font-size:12px;line-height:16px;color:var(--ink2);margin-top:2px}
.modes.dos{grid-template-columns:repeat(2,minmax(0,1fr))}
.card-h{font-size:19px;line-height:26px;margin-bottom:4px}
.hsc-card .q.lost{background:var(--lostbg);color:var(--lostText);font-family:var(--sans);font-weight:700;font-size:16px}

/* ── D131: Progress, la estimación que llena patron.js ── */
#estimacion h2{font-family:var(--serif);font-weight:400;font-size:26px;line-height:32px}
#estimacion .est-card{display:grid;gap:8px}
#estimacion .meta{font-size:13px;line-height:19px;color:var(--ink2)}
#estimacion .est-temas{display:grid}
#estimacion .est-tema{padding:12px 4px;border-bottom:1px solid var(--line);display:grid;gap:4px}
#estimacion .est-tema:last-child{border-bottom:0}
#estimacion .est-tema>p:first-child{font-weight:600;font-size:15px}
#estimacion .rango-barra{position:relative;height:10px;border-radius:999px;background:var(--surface2);box-shadow:0 0 0 1px var(--line) inset;overflow:hidden}
#estimacion .rango-barra .ahora,#estimacion .rango-barra .antes{position:absolute;top:0;bottom:0;border-radius:999px;transition:left .8s var(--ease),width .8s var(--ease)}
#estimacion .rango-barra .ahora{background:var(--blue)}
#estimacion .rango-barra .antes{background:var(--r2);opacity:.5}
#estimacion .aviso{font-size:12px;line-height:18px;color:var(--ink2)}
#estimacion .criterio{border:0;border-bottom:1px solid var(--line);border-radius:0;margin:0;background:none;box-shadow:none}
#estimacion .criterio:last-child{border-bottom:0}
#estimacion .aviso{border:0;padding:0 4px;background:none}

/* ── D131: la portada (del prototipo index.html) ── */

.first{display:grid;gap:28px;grid-template-areas:"stage" "doors" "cta" "intents" "trust";min-width:0}
.first>*{min-width:0}
.stage{grid-area:stage}.a-doors{grid-area:doors}.a-cta{grid-area:cta}.a-int{grid-area:intents}.a-trust{grid-area:trust}
.cta-note{text-align:center;font-size:13px;line-height:18px;color:var(--ink2);margin-top:10px}
.replay{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px}
.replay .link{min-height:32px}
.stage-cue{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:22px;font-size:13px;line-height:18px;color:rgba(246,244,239,.78);border-top:1px solid rgba(255,255,255,.1);padding-top:14px;max-width:460px}
.stage-cue span{display:flex;flex-direction:column;gap:4px;min-width:0}
.stage-cue b{font-family:var(--serif);font-weight:400;font-style:italic;font-size:22px;line-height:1;color:var(--gold)}
/* the landing wears the ink: app bar joins the stage */
.portada .appbar{background:rgba(11,16,48,.86);border-bottom-color:rgba(255,255,255,.07)}
.portada .appbar .wordmark{color:#F6F4EF}
.portada .appbar .login{color:var(--gold)}
.portada .appbar .cseg{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.14)}
.portada .appbar .cseg button{color:rgba(246,244,239,.78)}
.portada .appbar .cseg button[aria-pressed="true"]{background:var(--gold);color:#0B1030;box-shadow:0 0 14px -2px rgba(255,194,75,.6)}
@media (min-width:1024px){
  .first{grid-template-columns:minmax(0,6fr) minmax(0,5fr);column-gap:48px;row-gap:32px;
    grid-template-areas:"stage stage" "doors cta" "intents intents" "trust trust"}
  .a-cta{align-self:center}
}

.portada .appbar .cseg a{color:rgba(246,244,239,.78)}
.portada .appbar .cseg a[aria-current]{background:var(--gold);color:#0B1030}
.promesa-portada{margin-top:6px}
.a-doors .doors{margin:10px 0 8px}
.a-int .eyebrow,.a-doors .eyebrow{margin-bottom:10px}
.a-trust .hsc-card{margin-top:14px}
.a-trust .foot{margin-top:18px;display:grid;gap:6px}
.a-trust .foot nav{display:flex;gap:16px}
.a-trust .foot a{color:var(--accentText);font-weight:600;font-size:14px}
@media (prefers-reduced-motion:reduce){.portada .rise{animation:none}}

/* ── D134: la ficha de una fuga ── */
#fuga .glifo{font-family:var(--math);font-style:italic;color:var(--accentText)}
#fuga .li .ic.lost{background:var(--lostbg);color:var(--lostText);font-weight:700}
#fuga .crit{grid-template-columns:auto minmax(0,1fr)}

/* D134: cuánto tiempo hay hoy */
.largos{display:inline-flex;gap:4px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:2px}
.largos a{min-width:40px;height:30px;padding:0 8px;border-radius:999px;display:inline-grid;place-items:center;font-size:12px;font-weight:600;color:rgba(246,244,239,.8)}
.largos a[aria-current]{background:var(--gold);color:#0B1030}

/* ── D134: la libreta con la cara nueva ── */
.notebook .toc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.notebook .li{grid-template-columns:minmax(0,1fr) auto;min-height:52px}
.notebook .li .tx b{display:block;font-size:15px;line-height:20px;font-weight:600}
.notebook .li .tx small{display:block;font-size:12px;color:var(--ink2)}
.notebook details .paginas{padding:0 14px 8px}
.notebook .nota{display:grid;gap:12px;font-size:17px;line-height:27px}
.notebook .probar{margin-top:20px}
/* D134: en modo foco la ✕ ocupa el sitio del nombre; queda el logo */
.appbar:has(.back) .wm-t{display:none}

/* «AU» en mayúsculas a la altura de las minúsculas de «Marksmith» (Pepe, 26 sep) */
.wordmark .au,#fragua-marca .au{font-size:.66em;letter-spacing:.04em}
#fragua-marca .au{touch-action:manipulation;-webkit-tap-highlight-color:transparent}

/* ── LA FRAGUA (D138, D142) ───────────────────────────────────────── */
@font-face{font-family:'MS Math';font-style:italic;src:url('katex/fonts/KaTeX_Math-Italic.woff2') format('woff2')}
body.fragua{--f-noche:#0B1030;--f-oro:#FFC24B;--f-oro-vivo:#FFE3A3;--f-marfil:#F6F4EF;--f-marfil2:rgba(246,244,239,.74);
  --f-acero:#8C95B5;--f-frio:rgba(246,244,239,.62);--f-ease:cubic-bezier(.2,.7,.2,1);
  background:radial-gradient(120% 80% at 50% 110%,#3a2208 0%,#1a1430 26%,#121A4A 52%,#0B1030 100%) fixed #0B1030;color:var(--f-marfil)}
html:has(body.fragua){background:#0B1030}
body.fragua .appbar{display:none}
body.fragua .version{color:rgba(246,244,239,.6);position:relative;z-index:3}
body.fragua #pantalla{max-width:none;padding:0}
#fragua-lienzo{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
#fragua-destello{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:0;
  background:radial-gradient(60% 45% at 50% 100%,rgba(255,200,110,.55),rgba(255,140,40,.12) 55%,transparent 75%)}
.fragua-escena{position:relative;z-index:2;max-width:1120px;margin:0 auto;padding:40px 16px 56px}
.fragua-cab{text-align:center;margin:8px 0 34px}
.fragua-the{font:600 11px/1 var(--sans,system-ui);letter-spacing:.42em;text-transform:uppercase;color:var(--f-oro);margin-bottom:10px}
#fragua-marca{font-family:var(--serif,Georgia,serif);font-weight:400;font-size:clamp(44px,11vw,84px);line-height:.95;letter-spacing:-.01em;margin:0;color:var(--f-marfil)}
#fragua-marca span{display:inline-block}
.intro #fragua-marca span{animation:f-forja .9s var(--f-ease) backwards;animation-delay:calc(.15s + var(--i) * 45ms)}
@keyframes f-forja{0%{color:#fff3cf;text-shadow:0 0 18px #FFB347,0 0 40px rgba(255,120,30,.9);transform:translateY(10px) scale(1.25);filter:blur(3px);opacity:0}
  35%{opacity:1;color:var(--f-oro-vivo);text-shadow:0 0 14px rgba(255,170,60,.85)}100%{text-shadow:none;transform:none;filter:none}}
.fragua-lema{font-family:var(--serif,Georgia,serif);font-style:italic;font-size:clamp(18px,4.4vw,24px);color:var(--f-marfil2);margin:10px 0 0}
.fragua-pide{font-size:14px;color:var(--f-marfil2);margin:18px 0 0}
.intro .fragua-lema,.intro .fragua-pide{animation:f-sube .8s var(--f-ease) .9s backwards}
@keyframes f-sube{from{opacity:0;transform:translateY(8px)}}
.fragua-abiertas{display:grid;gap:16px;max-width:760px;margin:0 auto;perspective:900px}
.intro .fragua-abiertas{animation:f-sube .7s var(--f-ease) 1.05s backwards}
.fragua-pieza{position:relative;border-radius:24px;padding:26px 24px 24px;overflow:hidden;isolation:isolate;
  background:linear-gradient(160deg,rgba(28,38,96,.85),rgba(12,17,52,.92));border:1px solid rgba(255,194,75,.35);
  box-shadow:0 18px 40px -18px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.06);
  transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .25s var(--f-ease),border-color .25s,box-shadow .25s}
.fragua-pieza::before{content:'';position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .25s;
  background:radial-gradient(180px 130px at var(--mx,50%) var(--my,50%),rgba(255,194,75,.22),transparent 70%)}
.fragua-pieza:hover,.fragua-pieza:focus-within{border-color:rgba(255,194,75,.75);box-shadow:0 24px 50px -18px rgba(0,0,0,.85),0 0 40px -10px rgba(255,170,60,.55)}
.fragua-pieza:hover::before{opacity:1}
.fragua-glifo{position:absolute;right:4px;bottom:-40px;z-index:-1;font-family:'MS Math',var(--serif,serif);font-style:italic;font-size:170px;line-height:1;color:rgba(255,194,75,.14);pointer-events:none;white-space:nowrap}
.fragua-pieza h2{font-family:var(--serif,Georgia,serif);font-weight:400;font-size:clamp(38px,9vw,56px);line-height:1.02;margin:0 0 8px;color:var(--f-marfil)}
.fragua-pieza p{font-size:15px;line-height:22px;color:var(--f-marfil2);max-width:44ch;margin:0 0 22px}
.fragua-niveles{display:grid;grid-template-columns:1fr 1fr;gap:10px}
/* la tarjeta de Maths lleva cuatro chips (D238) y «Advanced + Ext 1 →» no cabe en media columna
   de un móvil: se salía de la tarjeta. Con 3+ chips, en móvil, una columna */
@media (max-width:520px){.fragua-niveles:has(> :nth-child(3)){grid-template-columns:1fr}}
.fragua-nivel{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:54px;padding:16px 14px 16px 16px;border-radius:16px;
  font:600 16px/1 var(--sans,system-ui);white-space:nowrap;text-decoration:none;color:var(--f-oro-vivo);
  border:1px solid rgba(255,194,75,.6);background:rgba(22,30,78,.94)}
.fragua-nivel::after{content:'→';transition:transform .2s}
.fragua-nivel:hover,.fragua-nivel:focus-visible{background:var(--f-oro);color:var(--f-noche);outline:none}
.fragua-nivel:hover::after{transform:translateX(3px)}
.fragua-proximas{max-width:760px;margin:40px auto 0}
.intro .fragua-proximas{animation:f-sube .7s var(--f-ease) 1.25s backwards}
.fragua-proximas h2{font:600 12px/16px var(--sans,system-ui);letter-spacing:.14em;text-transform:uppercase;color:var(--f-acero);margin:0 0 6px;display:flex;align-items:center;gap:10px}
.fragua-proximas h2::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,rgba(140,149,181,.35),transparent)}
.fragua-nota{font-size:13px;color:var(--f-frio);margin:0 0 14px}
.fragua-grupo{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 10px}
.fragua-fam{flex:0 0 100%;font:600 10.5px/1 var(--sans,system-ui);letter-spacing:.12em;text-transform:uppercase;color:var(--f-acero);margin:6px 0 2px}
.fragua-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 12px 8px 10px;border-radius:12px;border:1px solid rgba(140,149,181,.3);
  background:rgba(30,36,64,.55);color:var(--f-frio);font-size:14px;line-height:1.1}
.fragua-chip i{font-family:'MS Math',var(--serif,serif);font-style:italic;font-size:17px;color:var(--f-acero);min-width:18px;text-align:center}
.fragua-chip small{font-size:11.5px;color:rgba(246,244,239,.56)}
/* la cámara atraviesa la tarjeta y se funde en el azul de la página siguiente */
#fragua-paso{position:fixed;inset:0;z-index:5;pointer-events:none;opacity:0;
  background:radial-gradient(circle at var(--px,50%) var(--py,50%),#fff3cf 0%,var(--f-oro) 8%,var(--f-noche) 34%)}
.cruzando .fragua-escena{transition:transform 1.3s cubic-bezier(.6,0,.9,.4),opacity 1.1s ease-in .2s;transform:scale(1.6);opacity:0}
.cruzando .fragua-pieza.elegida{transform:scale(1.25);border-color:var(--f-oro)}
.cruzando #fragua-paso{animation:f-paso 1.4s ease-in forwards}
@keyframes f-paso{0%{opacity:0;clip-path:circle(0 at var(--px) var(--py))}40%{opacity:1}100%{opacity:1;clip-path:circle(150% at var(--px) var(--py))}}
#fragua-destino{position:fixed;inset:0;z-index:6;display:grid;place-items:center;font-family:var(--serif,Georgia,serif);font-size:clamp(34px,8vw,64px);color:var(--f-marfil);opacity:0;pointer-events:none}
.cruzando #fragua-destino{animation:f-aparece .4s ease 1s forwards}
@keyframes f-aparece{to{opacity:1}}
/* la llegada a la portada del programa: el título se queda un instante y la página sale
   despacio de detrás de él, al ritmo con que apareció (Pepe, 26 sep) */
body[data-llegada]::after{content:attr(data-llegada);position:fixed;inset:0;z-index:100;display:grid;place-items:center;
  background:#0B1030;color:#F6F4EF;font-family:var(--serif,Georgia,serif);font-size:clamp(34px,8vw,64px);pointer-events:none;
  animation:f-llegada 1.1s cubic-bezier(.4,0,.2,1) .55s forwards}
@keyframes f-llegada{to{opacity:0;visibility:hidden}}
body[data-llegada] .rise{animation-delay:calc(.75s + var(--i,0) * 110ms);animation-duration:.9s}
@media (prefers-reduced-motion:reduce){.intro *{animation:none!important}.cruzando .fragua-escena{transition:none}body[data-llegada]::after{display:none}}

.fragua-legal{margin:28px 0 0;text-align:center;font-size:12.5px;color:var(--f-marfil2)}
.fragua-legal nav{display:flex;justify-content:center;gap:18px;margin-bottom:6px}
.fragua-legal a{color:var(--f-marfil2);text-underline-offset:3px}
.fragua-legal p{margin:0}

/* D145: el selector de programa. En el móvil ocupa el sitio del nombre (queda el logo) */
.prog{position:relative;min-width:0}
.prog summary{list-style:none;display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px 0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:13.5px;font-weight:600;cursor:pointer;white-space:nowrap;max-width:46vw;overflow:hidden;text-overflow:ellipsis}
.prog summary::-webkit-details-marker{display:none}
.prog[open] summary svg{transform:rotate(180deg)}
/* Pepe (29 sep): el menú es la fragua en pequeño: cada programa con sus chips, el del alumno marcado */
.prog-menu{position:absolute;left:0;top:calc(100% + 8px);z-index:60;width:min(360px,calc(100vw - 2*var(--g)));max-height:calc(100dvh - 76px);overflow:auto;display:grid;gap:2px;padding:8px;border-radius:16px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shInk)}
.prog-menu p{margin:4px 8px 6px;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2)}
.pm-prog{display:grid;gap:8px;padding:10px;border-radius:12px;min-width:0}
.pm-prog.actual{background:var(--blueSoft)}
.pm-t{display:flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;color:var(--ink)}
.pm-t i{font-style:normal;font-family:var(--serif);font-size:15px;color:var(--accentText);min-width:26px;text-align:center}
.pm-chips{display:flex;flex-wrap:wrap;gap:6px}
.prog-menu a{text-decoration:none}
.prog-menu a.pm-chip{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:13.5px;font-weight:600;white-space:nowrap;transition:background .2s var(--ease)}
.prog-menu a.pm-chip:hover{border-color:var(--ink2)}
.prog-menu a.pm-chip[aria-current]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.prog-menu a.todas{display:flex;align-items:center;margin-top:4px;padding:12px 10px 8px;border-top:1px solid var(--line);color:var(--accentText);font-size:15px;font-weight:600}
@media (max-width:639px){.appbar:has(.prog) .wm-t{display:none}
  .prog{position:static}.prog-menu{left:var(--g);right:var(--g);width:auto}}

/* ── la burbuja (D150): el símbolo y la hoja que sube ─────────────── */
.cm-btn{display:inline-flex;align-items:center;gap:6px;min-width:36px;min-height:36px;padding:6px 8px;border-radius:10px;border:1px solid transparent;background:none;color:var(--ink2);cursor:pointer;font:600 13px/1 var(--sans);vertical-align:middle}
.cm-btn:hover,.cm-btn:focus-visible{border-color:var(--line);background:var(--surface);color:var(--ink);outline:none}
.cm-btn.cm-hecho{color:var(--accentText)}
.cm-btn.cm-hecho .cm-svg{fill:var(--blueSoft)}
.cm-btn-txt{margin-left:auto}
.rotulo .cm-btn{margin-left:auto;align-self:center}
.rotulo .marks{margin-left:auto}
.rotulo .marks+.cm-btn{margin-left:0}
.cm-cabecera{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.cm-capa{position:fixed;inset:0;z-index:120;background:rgba(11,16,48,.28);display:flex;align-items:flex-end;justify-content:center}
.cm-hoja{width:100%;max-width:560px;max-height:72vh;overflow:auto;background:var(--surface);color:var(--ink);border-radius:20px 20px 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom));box-shadow:0 -12px 40px -12px rgba(0,0,0,.45);display:grid;gap:12px}
@media (min-width:1024px){.cm-capa{align-items:center}.cm-hoja{border-radius:20px;max-height:80vh}}
.cm-tit{font-family:var(--serif);font-size:22px;line-height:26px}
.cm-motivos{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.cm-chip{font:600 13.5px/18px var(--sans);padding:10px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface2,var(--surface));color:var(--ink);text-align:left;cursor:pointer;min-height:44px}
.cm-chip.sel{border-color:var(--blue);background:var(--blueSoft);color:var(--accentText)}
.cm-texto{width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);resize:vertical;min-height:72px}
.cm-pie{font-size:12.5px;line-height:17px;color:var(--ink2);margin:0}
.cm-pie.cm-fallo{color:var(--lostText)}
.cm-ya,.cm-gracias{margin:0}
.cm-ya{font-size:13px;color:var(--ink2)}
.cm-gracias{font-size:16px}
.cm-acciones{display:flex;gap:8px;justify-content:flex-end}
.cm-acciones button{font:600 15px/1 var(--sans);padding:12px 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;min-height:44px}
.cm-acciones .cm-enviar{background:var(--blue);border-color:var(--blue);color:#fff}
.cm-acciones .cm-enviar:disabled{opacity:.45;cursor:default}
.vistazo-comentarios .cm-grupo{margin:12px 0;padding:14px}
.vistazo-comentarios .cm-cita{margin:8px 0 0;padding-left:10px;border-left:2px solid var(--line)}

/* ── Practise en tres capas (D141, D154): el plan, y «Train how you think» ── */
.plan{margin-bottom:6px}
.plan .plan-h{font-family:var(--serif);font-size:30px;line-height:34px;margin-top:8px}
.plan .plan-sub{font-size:14px;line-height:20px;opacity:.78;margin-top:6px;max-width:48ch}
.plan-pct{font-size:13px;color:var(--gold)}
.dosis{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px}
.dosis a{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);color:inherit;text-decoration:none}
.dosis a:hover{border-color:rgba(255,194,75,.5)}
.dosis b{font-size:15.5px}
.dosis .dq{font-size:13px;color:var(--gold);white-space:nowrap}
.dosis .bar{grid-column:1/-1;height:4px;border-radius:3px;background:rgba(255,255,255,.1);overflow:hidden;display:block}
.dosis .bar i{display:block;height:100%;background:var(--gold);border-radius:3px}
.dosis small{grid-column:1/-1;font-size:13px;line-height:18px;opacity:.78}
.plan-pie{margin-top:14px;opacity:.7}
.piensa{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media (min-width:1024px){.piensa{grid-template-columns:repeat(4,minmax(0,1fr))}}
.pc{display:grid;gap:4px;align-content:start;padding:14px;border-radius:16px;border:1.5px solid var(--line);background:var(--surface);min-width:0;color:inherit;text-decoration:none}
.pc:hover{border-color:var(--blue)}
.pc .pg{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:var(--blueSoft);color:var(--accentText);font:italic 20px/1 var(--serif);margin-bottom:4px}
.pc b{font-size:15px}
.pc small{font-size:12.5px;line-height:17px;color:var(--ink2)}
.pc.caso{border-color:var(--gold);background:linear-gradient(160deg,rgba(255,194,75,.12),transparent 60%),var(--surface)}
.pc.caso .pg{background:rgba(255,194,75,.25);color:var(--goldText)}
/* ── Progress (D140): cómo se pierden los marks, todas las hojas ── */
.tipos{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:12px}
.tipos li{display:grid;grid-template-columns:minmax(0,1fr) 96px 26px;gap:10px;align-items:center}
.tipos b{display:block;font-size:14.5px}
.tipos small{display:block;font-size:12px;color:var(--ink2)}
.tipos .tb{height:8px;border-radius:5px;background:var(--line);overflow:hidden;display:block}
.tipos .tb i{display:block;height:100%;background:var(--lostText);border-radius:5px}
.tipos em{font-style:normal;font-weight:700;text-align:right}
.filtros{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}
.filtros button{font:600 13px/1 var(--sans);padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink2);cursor:pointer}
.filtros button[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.hj{font:700 10px/1 var(--sans);letter-spacing:.06em;text-transform:uppercase;padding:6px 8px;border-radius:8px;background:var(--blueSoft);color:var(--accentText);min-width:48px;text-align:center}
.hj.tuyo{background:rgba(255,194,75,.22);color:var(--goldText)}
.hojas .li .ic.tnum{width:auto;min-width:40px;padding:0 6px}
/* D159: Practise a dos columnas en escritorio (7/5 como `.two`); en móvil una sola, con el orden
   de D141 (plan · pensar · lo demás): las dos pilas se disuelven (display:contents) y `order` manda */
.practise-grid{display:grid;gap:24px;min-width:0}
.practise-grid>.stack{display:contents}
.practise-grid #plan{order:-2}
.practise-grid #redo{order:-2}
.practise-grid .capa2{order:-1;margin:0}
.practise-grid .capa3{margin:0}
@media (min-width:1024px){
  .practise-grid>.stack{display:grid}
  .practise-grid .capa3{display:none}
  .practise-grid .piensa{grid-template-columns:minmax(0,1fr)}
  .practise-grid .pc{grid-template-columns:auto minmax(0,1fr);column-gap:14px;align-items:center;padding:14px 16px}
  .practise-grid .pc .pg{grid-row:1/3;margin:0}
}
.modes.dos>.mode:only-child{grid-column:1/-1}
.piensa .pc:last-child:nth-child(odd){grid-column:1/-1}
/* D161: entrar / guardar lo suyo con el conmutador del prototipo */
.signin{padding-top:8px}
.signin header{margin:4px 0 0}
.signin .campos input[type="email"],.signin .campos input[type="password"],.signin .campos input[type="text"]{width:100%;font:inherit;font-size:16px;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink);min-width:0}
.signin .campos input:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.signin .recordar{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink);cursor:pointer;padding:4px 2px}
.signin #acepta a{color:inherit;text-decoration:none;border-bottom:1px solid var(--line)}
.signin .recordar input{width:18px;height:18px;margin:0;flex:none;accent-color:var(--blue)}
.signin .meta:empty{display:none}
.signin .btn{width:100%;justify-content:center}
.signin .centrada-texto{text-align:center;margin-top:-8px}

/* ── Las pantallas viejas de Maths Extension con la maqueta .d2 (29 sep) ── */
/* la hoja marcada (hoja_marcada.js) dentro de una pantalla .d2: su cabecera, el margen del marker
   y lo que vio, con la tipografía de la casa. Vale para /sheets, /mark, /block, /wayin y ciencias. */
.d2 .hoja-marcada{display:grid;gap:14px;min-width:0;margin:0}
.d2 .hoja-marcada .cabecera{display:flex;align-items:center;justify-content:space-between;gap:10px 14px;flex-wrap:wrap}
.d2 .hoja-marcada .cabecera h2{font-family:var(--serif);font-weight:400;font-size:25px;line-height:30px;letter-spacing:-.005em;min-width:0}
.d2 .hoja-marcada .total{font-size:34px;line-height:1.1}
.d2 .hoja-marcada .renglones,.d2 .criterios-margen .parte-margen,.d2 .entrada-veredicto{margin:0}
.d2 .hoja-marcada .renglon{padding-left:6px;padding-right:10px}
.d2 .hoja-marcada .renglon .texto{overflow-x:auto;overflow-y:hidden;min-width:0}
.d2 .entrada-veredicto{font-size:15px;line-height:22px;min-width:0}
.d2 .criterios-margen{display:grid;gap:12px;min-width:0}
.d2 .criterios-margen>h2,.d2 .hoja-marcada>h2.meta{font:600 12px/16px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--ink2)}
.d2 .parte-margen{display:grid;gap:6px;padding:12px 14px;border-radius:16px;border:1px solid var(--line);background:var(--surface);min-width:0}
.d2 .parte-margen>p.meta{font-size:13px;font-weight:600;color:var(--ink2)}
.d2 .criterio-linea{margin:0;font-size:15px;line-height:22px;overflow-wrap:anywhere}
.d2 .criterio-linea .meta{font-size:13px}
.d2 .hoja-marcada .visto{font-size:15px;line-height:22px}
.d2 .hoja-marcada>p.small{margin:0}
/* el enunciado de una hoja, en tarjeta */
.hoja-q{padding:16px 18px}
.hoja-q .material{font-size:var(--t-enunciado)}
.hoja-q .parte{margin:14px 0 0;display:grid;gap:6px;justify-items:start;min-width:0}
.hoja-q .parte>.carril{justify-self:stretch}
.hoja-q .pill{font-family:var(--sans)}
.hoja-q .material>.cm-btn:first-child{float:right;margin:-6px -6px 6px 10px}
.hoja-q>.rotulo{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:-4px 0 10px}
/* /block: los filtros en tarjeta, el reloj en píldora, «Skip» discreto */
.filtros-bloque{gap:18px}
.filtros-bloque .card-h{margin:0}
.filtros-bloque .etiqueta{display:block;font-size:13px;font-weight:600;color:var(--ink2);margin-bottom:8px}
.filtros-bloque legend.etiqueta{margin-bottom:8px}
.bloque-cab{align-items:center;flex-wrap:wrap}
.bloque-cab .intro{flex:1 1 220px}
.clock.pasado{color:var(--ink2);border-color:var(--line)}
.eng-mark .saltar{justify-self:center}
.eng-mark .fotos-aqui{margin:0}
/* /exam (sala.js): cada pantalla en su .wrap estrecho; el reloj en la barra fija de arriba */
.sala-mext .em-cab{margin-bottom:0}
.sala-mext :is(h1,h2)[tabindex="-1"]:focus-visible{outline:none}   /* el foco de pantallaNueva() no es un control */
.sala-mext .page-h{text-wrap:balance}
@media (min-width:640px){.sala-mext .intents{grid-template-columns:repeat(2,minmax(0,1fr))}}
.sala-mext .intent{grid-template-columns:46px minmax(0,1fr)}
.sala-enlaces{gap:4px 18px}
.acciones-sala{display:grid;gap:8px;justify-items:center}
.acciones-sala .btn{width:100%}
.cabecera-sala{position:sticky;top:10px;z-index:5;background:var(--cardBg);text-align:left;border-bottom:0;padding:10px 14px}
.sala-mext .clock{font-size:15px;min-height:38px;padding:0 14px}
.sala-seccion{gap:14px}
.sala-seccion>.sec-head{margin:6px 0 0}
.pregunta-sala{margin:0;border:1px solid var(--hair);border-radius:22px}
.pregunta-sala.activa{border-color:var(--blue);box-shadow:0 0 0 3px var(--blueSoft),var(--sh);background:var(--cardBg)}
.pregunta-sala .cabecera-q{display:flex;align-items:center;gap:8px;margin:-4px 0 8px}
.pregunta-sala .cabecera-q .qn{font-size:17px;line-height:22px}
.pregunta-sala .cabecera-q .cm-btn{margin-left:auto}
.sala-mext .mando-q{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.sala-mext .en-pantalla{margin-top:12px}
.sala-mext .en-pantalla>summary{color:var(--accentText);font-weight:600;font-size:15px;min-height:40px;display:flex;align-items:center;cursor:pointer}
.sala-mext .en-pantalla .vias-barra{margin:6px 0 10px}
.sala-mext .opciones-mcq{display:grid;gap:8px;margin-top:12px}
.sala-mext .opcion-mcq{display:grid;grid-template-columns:32px minmax(0,1fr);align-items:center;gap:12px;min-height:52px;padding:8px 12px;border-radius:15px;border:1.5px solid var(--line);background:var(--cardBg);font-size:17px}
.sala-mext .opcion-mcq .katex-display{margin:0;text-align:left}
.sala-mext .opcion-mcq .katex-display>.katex{text-align:left}
.sala-mext .opciones-dibujo{grid-template-columns:repeat(2,minmax(0,1fr))}
.sala-mext .opciones-dibujo .opcion-mcq{grid-template-columns:32px minmax(0,1fr);align-items:start}
.sala-mext .opcion-mcq .ol{width:32px;height:32px;border-radius:10px;background:var(--paper);display:grid;place-items:center;font:600 13px var(--sans);color:var(--ink2);box-shadow:0 0 0 1px var(--hair) inset}
.sala-mext .opcion-mcq.elegible:hover{border-color:var(--r3);background:var(--cardBg)}
.sala-mext .opcion-mcq.elegida{outline:0;border-color:var(--ink);background:var(--cardBg)}
.sala-mext .opcion-mcq.elegida .ol{background:var(--ink);color:var(--paper)}
.sala-limpia{display:grid;justify-items:center;text-align:center;gap:8px;padding:28px 18px}
.sala-limpia .bigclock{margin:6px 0 2px}
.sala-limpia .muted{max-width:36ch}
.sala-paper .fb{padding-top:4px}
.sala-mext .chip.elegida,.sala-mext .chip[aria-pressed="true"]{border-color:var(--blue);color:var(--accentText);background:var(--blueSoft)}
.letras-seccion{padding:6px 14px}
.letras-seccion .fila-letras{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0;padding:10px 0;border-bottom:1px solid var(--line)}
.letras-seccion .fila-letras:last-child{border-bottom:0}
.letras-seccion .letras{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.letras-seccion .letra{min-width:44px;min-height:40px;justify-content:center}
.ruta-paso{margin:0;padding:8px 8px 8px 16px}
.revision-lista .li{grid-template-columns:minmax(0,1fr) auto}
.sala-resultado p{font-size:15px;line-height:22px}
/* /papers: las dos puertas y las áreas cubiertas */
.papers .mode.principal{border-color:var(--blue);box-shadow:0 0 0 3px var(--blueSoft),var(--sh)}
.papers .mode small+small.aun-no{margin-top:6px;color:var(--goldText)}
.cubiertas .chip{cursor:pointer;min-height:38px}
.cubiertas .chip input{accent-color:var(--blue);width:16px;height:16px;margin:0}
.cubiertas .chip:has(input:checked){border-color:var(--blue);color:var(--accentText);background:var(--blueSoft)}
.cubiertas .chip:has(input:focus-visible){outline:2px solid var(--blue);outline-offset:2px}
.acciones-papers{margin-top:4px}
/* /mcq: filtros en tarjeta, la pregunta en tarjeta, las opciones .opt y la solución en .why */
.mcq-filtros{gap:16px}
.mcq-filtros .seg{max-width:260px}
.mcq-q .material{font-size:var(--t-enunciado)}
.mcq .opts.opciones-dibujo{grid-template-columns:repeat(2,minmax(0,1fr))}
.mcq .opt{grid-template-columns:32px minmax(0,1fr)}
.mcq .opt:disabled{opacity:1}   /* button:disabled de estilo.css apagaba también la buena */
.mcq .opt.fade:disabled{opacity:.5}
.mcq .opt .ot .katex-display{margin:0;text-align:left}
.mcq .opt .ot .katex-display>.katex{text-align:left}
.mcq .opt .ot .figura{margin:0}
.mcq-trabajo{margin-top:10px}
.mcq-fin .h-serif{font-size:26px;line-height:32px}
/* /wayin: wayin.js pinta sus piezas de siempre (rótulo, material, opciones, palabras, tell, papel);
   aquí toman la cara .d2 sin tocar el guion (el pliegue de las entradas largas vive en wayin.js) */
.wayin #pieza{display:grid;gap:14px;min-width:0}
.wayin #pieza>*{margin:0;min-width:0}
.wayin .rotulo{display:flex;align-items:center;justify-content:space-between;gap:10px;font:600 12px/16px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--ink2)}
.wayin .rotulo .marks{margin-left:auto;font-size:13px;letter-spacing:.04em;text-transform:none;font-weight:600;color:var(--ink2)}
.wayin .rotulo .marks+.cm-btn{margin-left:0}
.wayin #pieza>h2.meta:not(.rotulo){font:400 22px/28px var(--serif);color:var(--ink);letter-spacing:-.005em}
.wayin #pieza>.material,.wayin .atril{background:var(--cardBg);border:1px solid var(--hair);border-radius:22px;box-shadow:var(--sh);padding:16px 18px;min-width:0}
.wayin .atril{display:block;flex:none}
.wayin .material{font-size:var(--t-enunciado)}
.wayin .material .parte{margin:12px 0 0}
.wayin .opciones{display:grid;gap:9px;margin:0}
.wayin .opciones>button{position:relative;display:block;width:100%;min-height:60px;padding:12px 14px 12px 56px;border-radius:17px;border:1.5px solid var(--line);background:var(--cardBg);color:var(--ink);text-align:left;font-size:15px;line-height:22px;transition:border-color .2s,transform .15s var(--ease),box-shadow .2s}
.wayin .opciones>button::before{left:14px;top:14px;width:30px;height:30px;border-radius:10px;background:var(--paper);display:grid;place-items:center;font:600 13px var(--sans);color:var(--ink2);box-shadow:0 0 0 1px var(--hair) inset}
.wayin .opciones>button:hover{border-color:var(--r3);box-shadow:var(--sh)}
.wayin .opciones>button.discreto{padding-left:14px;min-height:48px;border-style:dashed;color:var(--ink2);text-align:center}
.wayin .opciones>button.discreto::before{content:none}
.wayin .palabras{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.wayin button.palabra{min-height:40px;padding:0 14px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);font-size:15px;font-weight:600;color:var(--ink)}
.wayin button.palabra.fijada{border-color:var(--blue);color:var(--accentText);background:var(--blueSoft)}
.wayin .tell,.wayin .paga{margin:0;padding:12px 14px;border-left:3px solid var(--blue);border-radius:4px 14px 14px 4px;background:var(--surface);display:grid;gap:4px}
.wayin .paga{display:flex;gap:10px;border-left-color:var(--line)}
.wayin .revelado{margin:0;display:grid;gap:12px}
.wayin .revelado>p{margin:0}
.wayin input.linea-propia{width:100%;min-height:52px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);padding:0 14px;font-size:16px;margin:0}
.wayin input.linea-propia:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px var(--blueSoft)}
.wayin .botonera{position:static;display:grid;gap:8px;padding:0;background:none;border:0;margin:0}
.wayin .botonera button,.wayin button.primario{width:100%;max-width:none;min-height:56px;border-radius:17px;border:0;color:#fff;font-size:17px;font-weight:600;text-align:center;background:linear-gradient(180deg,#4A66FF,var(--blueDeep));box-shadow:0 10px 24px -8px rgba(53,82,255,.6)}
.wayin button.discreto:not(.opciones>button){min-height:44px;padding:0 6px;color:var(--accentText);font-weight:600}
.wayin a.boton{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 16px;border-radius:15px;border:1.5px solid var(--ink);font-weight:600;font-size:15px;justify-self:start}
.wayin .hoja-marcada>p.meta{margin:0}
/* /mark: nuestra o la suya, con la cara de .seg */
.seg button[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(11,16,48,.14),0 0 0 1px var(--hair)}
/* /sheets: la pila y «where your marks go» */
.sheets .donde>.small{margin-top:2px}
.sheets #donde-cuerpo{margin-top:12px}
.por-area .li{grid-template-columns:minmax(0,1fr) auto;min-height:48px}
.por-area .tx{font-size:15px;line-height:20px;font-weight:600}
.perdidos .li{min-height:56px;align-items:start}
.perdidos .ic{margin-top:2px}
.hoja-fila[aria-current="true"]{background:var(--blueSoft);border-radius:12px}
.sheets .hojas .end{gap:0;font-size:15px;font-weight:600;color:var(--ink)}
.sheets .hojas .end small{font-size:13px;font-weight:400;color:var(--ink2)}