:root{
  --ink:#14213D;--paper:#F3F5FA;--surface:#fff;--accent:#F28C38;--pink:#F6C1CB;
  --text2:#2E3A57;--muted:#4A5470;--muted-dark:#C9D0E2;--line:#D9DEEA;--track:#E4E8F1;
  --locked:#8E97B0;--locked-line:#D3D8E4;--todo-dark:#3A4767;
  --ok-bg:#DCE7FB;--ok-line:#1D4FB8;--ok-text:#123A8C;--bad-bg:#FBE1E7;--bad:#8A1F35;
  --display:'Bricolage Grotesque','Arial Black',sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);font-family:'Atkinson Hyperlegible','Segoe UI',system-ui,sans-serif;font-size:17px;line-height:1.5;color:var(--ink);overflow-x:hidden}
a{color:var(--ink)}a:hover{color:#2B4CB0}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block}
button{font:inherit}
:focus-visible{outline:3px solid #2B4CB0;outline-offset:2px}

.page{max-width:560px;margin:0 auto;padding:0 20px 48px;display:flex;flex-direction:column;gap:28px}
.page.lesson{gap:32px}
.page.chapter{padding-top:28px}
.page.gate{min-height:100svh;justify-content:center}
.col{display:flex;flex-direction:column;min-width:0}
.row{display:flex;align-items:center;gap:12px}
.gap-6{gap:6px}.gap-10{gap:10px}.gap-12{gap:12px}.gap-14{gap:14px}

.display{font-family:var(--display);font-weight:800}
.h1{font-size:44px;letter-spacing:-.04em;line-height:.98;text-wrap:balance}
.h1-lesson{font-size:46px;letter-spacing:-.04em;line-height:.95}
.h2{font-size:30px;letter-spacing:-.03em;line-height:1.1}
.lede{font-size:18px;color:var(--text2);text-wrap:pretty}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.eyebrow.on-dark{color:var(--pink)}
.sub{font-size:15px;color:var(--muted)}
.mark{background:var(--accent);padding:0 .12em;border-radius:.12em;-webkit-box-decoration-break:clone;box-decoration-break:clone}

.header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-height:44px}
.brand img{width:40px;height:40px;border-radius:12px;border:2px solid var(--ink);object-fit:cover}
.brand-name{font-family:var(--display);font-weight:800;font-size:19px;letter-spacing:-.02em;line-height:1}
.brand-tag{font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:3px;line-height:1}

.hero{position:relative;align-self:center;width:78%;max-width:320px;aspect-ratio:1;margin:8px 0 12px}
.hero.small{width:56%;max-width:200px}
.hero-tile{position:absolute;inset:0;border-radius:34px;background:var(--accent);transform:rotate(6deg)}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:34px;border:3px solid var(--ink);transform:rotate(-3deg);box-shadow:8px 8px 0 var(--ink)}
.bubble{position:absolute;top:-6%;right:-14%;background:var(--surface);border:2.5px solid var(--ink);border-radius:20px 20px 20px 4px;padding:10px 16px;box-shadow:3px 3px 0 var(--ink);font-family:var(--display);font-weight:800;font-size:20px;letter-spacing:-.02em;line-height:1.1;white-space:nowrap}

.card{background:var(--surface);border:2.5px solid var(--ink);border-radius:22px}
.card.shadow{box-shadow:5px 5px 0 var(--ink)}
.dark{background:var(--ink);color:var(--paper)}
.on-dark-2{color:var(--muted-dark)}

.btn{display:flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:12px 24px;border-radius:999px;border:0;text-decoration:none;font-weight:700;font-size:18px;cursor:pointer}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{color:var(--ink)}
.btn-ink{min-height:56px;background:var(--ink);color:#fff;box-shadow:5px 5px 0 var(--accent);width:100%}
.btn-ink:hover{color:#fff}
.btn-outline{min-height:44px;padding:0 18px;border:2px solid var(--ink);background:var(--surface);color:var(--ink);font-size:inherit}
.icon-btn{flex:0 0 44px;height:44px;border-radius:999px;border:2px solid var(--ink);background:var(--surface);display:flex;align-items:center;justify-content:center;color:var(--ink)}

.segments{display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));gap:5px}
.segments span{height:7px;border-radius:999px;background:var(--line)}
.segments .done{background:var(--accent)}
.segments .current{background:var(--ink)}
.segments.dark{gap:6px;margin:6px 0 4px}
.segments.dark span{height:8px;background:var(--todo-dark)}
.segments.dark .current{background:var(--paper)}

.continue{border-radius:28px;padding:24px;gap:10px}
.continue .title{font-family:var(--display);font-weight:800;font-size:32px;letter-spacing:-.03em;line-height:1.02}
.continue .btn{margin-top:6px}

.release{padding:18px 20px;border-radius:24px;display:flex;align-items:center;gap:14px}
.release-tile{flex:0 0 48px;height:48px;border-radius:16px;background:var(--pink);display:flex;align-items:center;justify-content:center}

.chapters{gap:14px}
.chapter-card{text-decoration:none;color:var(--ink);padding:18px 20px;display:flex;align-items:center;gap:16px}
.chapter-no{font-family:var(--display);font-weight:800;font-size:36px;letter-spacing:-.04em;line-height:1}
.chapter-title{font-family:var(--display);font-weight:800;font-size:21px;letter-spacing:-.02em;line-height:1.15}
.track{flex:1 1 auto;height:8px;border-radius:999px;background:var(--track);overflow:hidden}
.track>span{display:block;height:100%;background:var(--accent);border-radius:999px}
.count{font-size:14px;font-weight:700;white-space:nowrap}
.chip{align-self:flex-start;font-size:13px;font-weight:700;padding:3px 10px;border-radius:999px;background:var(--pink)}

.locked-group{display:flex;flex-direction:column;border:2px dashed var(--locked);border-radius:22px;color:var(--muted)}
.locked-row{display:flex;align-items:center;gap:14px;padding:14px 18px;min-height:44px}
.locked-row+.locked-row{border-top:2px dashed var(--locked-line)}
.locked-row .name{flex:1 1 auto;font-weight:700;color:var(--text2)}
.locked-row .when{font-size:14px;font-weight:700}

.chapter-head{background:var(--accent);border-bottom:2.5px solid var(--ink)}
.chapter-head .inner{max-width:560px;margin:0 auto;padding:14px 20px 28px;display:flex;flex-direction:column;gap:14px}
.chapter-head h1{font-size:64px;letter-spacing:-.05em;line-height:.9}
.back{align-self:flex-start;display:flex;align-items:center;gap:6px;min-height:44px;text-decoration:none;font-weight:700}
.bar{flex:1 1 auto;height:10px;border-radius:999px;background:#fff;border:2px solid var(--ink);overflow:hidden}
.bar>span{display:block;height:100%;background:var(--ink)}
.goals{padding:20px;gap:10px;display:flex;flex-direction:column}
.goals li{display:flex;gap:10px}
.goals li span{color:#C2410C;font-weight:700}

.lesson-row{display:flex;align-items:center;gap:14px;min-height:64px;padding:12px 16px;border-radius:20px;background:var(--surface);border:2px solid var(--line);text-decoration:none}
.lesson-row.current{flex-direction:column;align-items:stretch;padding:18px 16px;border-radius:22px;background:var(--ink);color:var(--paper);border:0;box-shadow:5px 5px 0 var(--accent)}
.lesson-row.current:hover{color:var(--paper)}
.lesson-row.locked{border:2px dashed var(--locked);background:transparent;color:var(--muted)}
.lesson-row .body{flex:1 1 auto;display:flex;flex-direction:column;min-width:0}
.lesson-row .name{font-weight:700}
.lesson-row.current .name{font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:-.02em;line-height:1.1}
.lesson-row .state{font-size:14px;font-weight:700;color:var(--muted)}
.bullet{flex:0 0 40px;height:40px;border-radius:999px;display:flex;align-items:center;justify-content:center;font-weight:700}
.bullet.done{background:var(--accent)}
.bullet.todo{border:2.5px solid var(--ink)}
.bullet.now{background:var(--paper);color:var(--ink)}
.bullet.lock{border:2px dashed var(--locked)}
.btn-row{display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:999px;background:var(--accent);color:var(--ink);font-weight:700}
.next-chapter{display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:22px;border:2.5px solid var(--ink);text-decoration:none}

.topbar .label{font-size:14px;font-weight:700;color:var(--muted)}
.section{display:flex;flex-direction:column;gap:12px}

.phrase{display:flex;align-items:center;gap:12px}
.phrase .en{font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:-.02em;line-height:1.15}
.phrase .es{font-size:15px;color:var(--muted)}
.group{overflow:hidden}
.group-title{font-size:26px;letter-spacing:-.02em;line-height:1.1}
.group .phrase{padding:12px 16px 12px 20px;border-radius:0}
.group .phrase+.phrase{border-top:2px solid var(--line)}
.tag[data-tense=Pasado]{background:var(--track)!important}
.tag[data-tense=Presente]{background:var(--accent)!important}
.phrase .tag{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:1px 8px;border-radius:999px;background:var(--pink);margin-bottom:4px}
.listen{flex:0 0 48px;height:48px;border-radius:999px;border:0;background:var(--accent);color:var(--ink);display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.listen.slow{flex-basis:44px;height:44px;background:transparent;border:2px solid var(--ink)}
.listen.playing{outline:3px solid #2B4CB0;outline-offset:2px}

.mistake{border-radius:22px;padding:20px;display:flex;flex-direction:column;gap:10px}
.mistake .wrong{display:flex;align-items:center;gap:10px;font-size:19px;color:var(--pink);text-decoration:line-through;text-decoration-thickness:2px}
.mistake .right{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:26px;letter-spacing:-.02em;line-height:1.1}
.mistake .why{font-size:16px;color:var(--muted-dark)}

.practice{border-radius:26px;padding:22px 18px;display:flex;flex-direction:column;gap:22px;box-shadow:6px 6px 0 var(--ink)}
.q{display:flex;flex-direction:column;gap:14px}
.q+.q{border-top:2px solid var(--line);padding-top:22px}
.q-prompt{font-family:var(--display);font-weight:800;font-size:24px;letter-spacing:-.02em;line-height:1.15}
.options{display:flex;flex-direction:column;gap:10px}
.quiz-option{display:flex;align-items:center;gap:12px;width:100%;min-height:56px;padding:12px 16px;border-radius:18px;font-weight:700;font-size:18px;text-align:left;cursor:pointer;color:var(--ink);background:var(--surface);border:2.5px solid var(--ink)}
.quiz-option.is-right{background:var(--ok-bg);border-color:var(--ok-line)}
.quiz-option.is-wrong{background:var(--bad-bg);border-color:var(--bad)}
.quiz-option.is-dim{border-color:var(--line);color:var(--muted)}
.quiz-option .mark-icon{display:flex}
.feedback{border-radius:18px;padding:14px 16px;flex-direction:column;gap:10px}
.feedback:not([hidden]){display:flex}
.feedback.ok{background:var(--ok-bg);gap:4px}
.feedback.ok strong{color:var(--ok-text)}
.feedback.no{background:var(--bad-bg)}
.feedback.no strong{color:var(--bad)}
.feedback span{font-size:16px}

.gate-form{display:flex;flex-direction:column;gap:14px}
.gate-input{min-height:56px;padding:12px 16px;border-radius:18px;border:2.5px solid var(--ink);font:inherit;font-size:18px;background:var(--surface);color:var(--ink);width:100%}
.gate-error{color:var(--bad);font-weight:700}

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