/* English on Board · app styles
   Layout: one-column phone app shell (max 460px). Home → Lesson → Session player with a fixed check bar. */
:root{
  --bg:#EDF1F3; --surface:#FFFFFF; --ink:#0D1F2D; --muted:#566874; --rule:#D3DCE2;
  --accent:#D9480F; --accent-ink:#FFFFFF;
  --sea:#17506A; --sea-ink:#FFFFFF; --sea-soft:#DCE9EF; --water:#CFE1E9; --quay:#B9C3C9;
  --hull:#22303A; --deck:#8FA597; --super:#FFFFFF; --antifoul:#9A3B2F; --suit-orange:#E2671C; --suit-blue:#1E3A5F; --gold:#C9A227;
  --ok:#1C7C4E; --ok-soft:#DCF2E4; --bad:#B8322A; --bad-soft:#FADFDC;
  --f-display:"Barlow Condensed","Arial Narrow",system-ui,sans-serif;
  --f-body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#09131A; --surface:#112029; --ink:#E3EBF0; --muted:#93A6B3; --rule:#22394A;
  --accent:#FF6B35; --accent-ink:#1A0A03;
  --sea:#0F3446; --sea-ink:#E3EBF0; --sea-soft:#16384A; --water:#0F2E3D; --quay:#3A4A55;
  --hull:#05090C; --deck:#4D6156; --super:#C9D4DB; --antifoul:#6E2C24; --suit-orange:#C85A12; --suit-blue:#3B5E8A; --gold:#D8B23A;
  --ok:#52C48C; --ok-soft:#123426; --bad:#F2776C; --bad-soft:#3A1D1B; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#09131A; --surface:#112029; --ink:#E3EBF0; --muted:#93A6B3; --rule:#22394A;
  --accent:#FF6B35; --accent-ink:#1A0A03;
  --sea:#0F3446; --sea-ink:#E3EBF0; --sea-soft:#16384A; --water:#0F2E3D; --quay:#3A4A55;
  --hull:#05090C; --deck:#4D6156; --super:#C9D4DB; --antifoul:#6E2C24; --suit-orange:#C85A12; --suit-blue:#3B5E8A; --gold:#D8B23A;
  --ok:#52C48C; --ok-soft:#123426; --bad:#F2776C; --bad-soft:#3A1D1B; color-scheme:dark}

[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.45;-webkit-tap-highlight-color:transparent}
*{box-sizing:border-box}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.app{max-width:460px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.mono{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
h1,h2,h3{font-family:var(--f-display);font-weight:700;text-wrap:balance;margin:0;line-height:1.05}
.loading{padding:40px 0;color:var(--muted)}

/* ---------- Home ---------- */
.home{padding-block:20px 40px;display:flex;flex-direction:column;gap:22px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:38px;height:38px;border-radius:50%;background:var(--sea);display:grid;place-items:center;color:var(--sea-ink);flex:none}
.brand h1{font-size:29px;letter-spacing:.01em}
.brand p{margin:0;color:var(--muted);font-size:14px}
.continue{all:unset;box-sizing:border-box;cursor:pointer;background:var(--sea);color:var(--sea-ink);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:4px}
.continue h2{font-size:26px}
.continue .go{align-self:flex-start;margin-top:8px;background:var(--accent);color:var(--accent-ink);border-radius:10px;padding:8px 14px;font-family:var(--f-display);font-weight:700;font-size:18px;letter-spacing:.04em}
.module{display:flex;flex-direction:column;gap:6px}
.module-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;color:var(--muted)}
.module-head h3{font-size:22px;color:var(--ink)}
.route{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;position:relative}
.route::before{content:"";position:absolute;left:21px;top:24px;bottom:24px;border-left:2px dashed var(--rule)}
.stop{position:relative}
.stop-btn{all:unset;box-sizing:border-box;display:flex;align-items:center;gap:14px;width:100%;padding:8px 0;border-radius:12px}
.stop-btn[data-n]{cursor:pointer}
.stop-dot{width:44px;height:44px;flex:none;border-radius:50%;display:grid;place-items:center;font-family:var(--f-display);font-size:20px;font-weight:700;background:var(--surface);border:2px solid var(--rule);color:var(--muted);z-index:1}
.stop.ready .stop-dot{border-color:var(--sea);color:var(--ink)}
.stop.current .stop-dot{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.stop.complete .stop-dot{background:var(--ok);border-color:var(--ok);color:var(--surface)}
.stop-body{min-width:0;flex:1;display:flex;flex-direction:column}
.stop-title{font-weight:600}
.stop:not(.ready) .stop-title{color:var(--muted);font-weight:500}
.stop-meta{font-size:13px;color:var(--muted)}
.note{font-size:14px;color:var(--muted)}

/* ---------- Lesson ---------- */
.lesson{display:flex;flex-direction:column;gap:18px;padding-block:0 40px}
.hero{background:var(--sea);color:var(--sea-ink);margin-inline:calc(-1 * max(16px,env(safe-area-inset-left,0px)));padding:16px max(16px,env(safe-area-inset-left,0px)) 22px;display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden;min-height:220px;justify-content:flex-end}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 30%;max-width:none}
.hero.has-img{min-height:min(400px,62vh);padding-top:56px}
.hero.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(5,15,22,.88),rgba(5,15,22,.15) 70%)}
.hero > *:not(img){position:relative;z-index:1}
.hero.has-img{color:#fff}
.back{all:unset;cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-size:14px;opacity:.95;position:absolute!important;top:14px;left:max(16px,env(safe-area-inset-left,0px))}
.hero h2{font-size:38px}
.hero p{margin:0;max-width:36ch;opacity:.95}
.sessions{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.sess{all:unset;box-sizing:border-box;width:100%;cursor:pointer;display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:12px 14px}
.sess-ico{width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;background:var(--sea-soft);color:var(--ink)}
.sess.next{border:2px solid var(--accent)}
.sess.done .sess-ico{background:var(--ok-soft);color:var(--ok)}
.sess-body{flex:1;min-width:0;display:flex;flex-direction:column}
.sess-title{font-weight:600}
.sess-meta{font-size:13px;color:var(--muted)}
.sess-go{font-family:var(--f-display);font-weight:700;color:var(--accent);font-size:18px}
.panel{background:var(--surface);border:1px solid var(--rule);border-radius:16px;padding:16px}

/* ---------- Player ---------- */
.player{flex:1;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:12px;padding-block:14px 8px}
.x{all:unset;cursor:pointer;width:32px;height:32px;display:grid;place-items:center;border-radius:8px;color:var(--muted)}
.bar{flex:1;height:10px;border-radius:999px;background:var(--rule);overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--accent);border-radius:999px;transition:width .35s ease}
.stage{flex:1;display:flex;flex-direction:column;gap:16px;padding-block:8px 170px}
.kicker{color:var(--muted)}
.prompt{font-family:var(--f-display);font-size:28px;font-weight:700;line-height:1.1;text-wrap:balance;margin:0}
.sub{color:var(--muted);margin:0}
.scene{border-radius:16px;overflow:hidden;aspect-ratio:4/3;max-width:100%;background:var(--sea-soft)}
.scene img{width:100%;height:100%;object-fit:cover;display:block}

.play-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.play{all:unset;cursor:pointer;width:72px;height:72px;border-radius:50%;background:var(--sea);color:var(--sea-ink);display:grid;place-items:center;flex:none;box-shadow:0 6px 18px -8px var(--sea)}
.play.playing{background:var(--accent);color:var(--accent-ink)}
.chip-btn{all:unset;cursor:pointer;border:1px solid var(--rule);background:var(--surface);border-radius:999px;padding:8px 12px;font-size:14px;display:inline-flex;gap:6px;align-items:center}
.radio-tag{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}
.radio-tag i{width:8px;height:8px;border-radius:50%;background:var(--accent)}

.opts{display:flex;flex-direction:column;gap:10px}
.opt{all:unset;box-sizing:border-box;cursor:pointer;border:2px solid var(--rule);background:var(--surface);border-radius:14px;padding:14px 16px;font-weight:500}
.opt[aria-pressed="true"]{border-color:var(--sea);background:var(--sea-soft)}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt:disabled{cursor:default}

.transcript{display:flex;flex-direction:column;gap:10px}
.tl{display:grid;grid-template-columns:auto 1fr;gap:4px 10px;align-items:start}
.who{font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:3px;min-width:62px}
.tl p{margin:0}
.tl .es{grid-column:2;color:var(--muted);font-size:14px}
.tl.speaking p{color:var(--accent)}
.line-text{font-family:var(--f-mono);font-size:15px}
.hidden-text{color:var(--muted);font-size:14px}
.hidden-text summary{cursor:pointer}

/* plate (SVG drawn in img/lNN/plate.svg) */
.plate{background:var(--water);border-radius:16px;overflow:hidden}
.plate svg{display:block;width:100%;height:auto}
.p-water{fill:var(--water)} .p-quay{fill:var(--quay)} .p-hull{fill:var(--hull)}
.p-deck{fill:var(--deck)} .p-super{fill:var(--super)} .p-line{stroke:var(--ink);fill:none}
.p-dome{fill:var(--super);stroke:var(--hull)} .p-ink{fill:var(--ink)} .p-soft{fill:var(--sea-soft)} .p-red{fill:var(--antifoul)} .p-orange{fill:var(--suit-orange)} .p-blue{fill:var(--suit-blue)} .p-gold{fill:var(--gold)} .p-white{fill:var(--super);stroke:var(--ink);stroke-width:1} .p-stroke{stroke:var(--ink);fill:none}
.p-label{fill:var(--ink);opacity:.6;font:500 9px var(--f-mono);letter-spacing:.1em}
.p-arrow{stroke:var(--ink);stroke-width:2;fill:none}
.pin{cursor:pointer}
.pin circle{fill:var(--accent);stroke:var(--surface);stroke-width:2}
.pin text{fill:var(--accent-ink);font:700 12px var(--f-body);text-anchor:middle;dominant-baseline:central;pointer-events:none}
.pin.seen circle{fill:var(--sea)} .pin.seen text{fill:var(--sea-ink)}
.pin.right circle{fill:var(--ok)} .pin.wrong circle{fill:var(--bad)}
.pin:focus-visible circle{stroke:var(--ink);stroke-width:3}
.caption{min-height:74px;display:flex;align-items:center;gap:12px}
.caption .en{font-family:var(--f-display);font-size:26px;font-weight:700}
.caption .es{color:var(--muted)}
.small-play{all:unset;cursor:pointer;width:44px;height:44px;flex:none;border-radius:50%;background:var(--sea-soft);display:grid;place-items:center}

/* word card */
.wcard{background:var(--surface);border:1px solid var(--rule);border-radius:20px;padding:22px;display:flex;flex-direction:column;gap:12px}
.wcard .en{font-family:var(--f-display);font-size:40px;font-weight:700;line-height:1}
.wcard .ipa{font-family:var(--f-mono);color:var(--muted);font-size:14px}
.wcard .es{font-size:18px}
.wcard .ex{border-top:1px dashed var(--rule);padding-top:12px;display:flex;gap:10px;align-items:flex-start}
.wcard .ex p{margin:0;font-family:var(--f-mono);font-size:15px;flex:1}
.wcard .ex span{display:block;font-family:var(--f-body);color:var(--muted);font-size:14px;margin-top:4px}

/* tip */
.tip{background:var(--surface);border:1px solid var(--rule);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px}
.tip p{margin:0}
.tip-tag{align-self:flex-start;background:var(--accent);color:var(--accent-ink);border-radius:6px;padding:3px 8px}
.tip ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.tip li{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;border-bottom:1px solid var(--rule);padding-bottom:8px}
.tip li:last-child{border-bottom:0;padding-bottom:0}
.tip li b{font-weight:600}
.tip li small{display:block;color:var(--muted);font-size:14px}
.steps3{display:flex;flex-direction:column;gap:8px}
.step3{display:grid;grid-template-columns:84px 1fr;gap:10px;align-items:baseline}
.step3 .mono{color:var(--accent)}
.step3 p{margin:0;font-family:var(--f-mono);font-size:15px}
.avoid{background:var(--bad-soft);border-radius:10px;padding:10px 12px;font-size:15px}
.avoid b{color:var(--bad)}
.good{background:var(--ok-soft);border-radius:10px;padding:10px 12px;font-size:15px}
.good b{color:var(--ok)}

/* match */
.match{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.match .col{display:flex;flex-direction:column;gap:10px;min-width:0}
.mt{all:unset;box-sizing:border-box;cursor:pointer;border:2px solid var(--rule);background:var(--surface);border-radius:12px;padding:12px;text-align:center;font-weight:500;min-height:54px;display:grid;place-items:center}
.mt[aria-pressed="true"]{border-color:var(--sea);background:var(--sea-soft)}
.mt.done{opacity:.35;border-style:dashed;cursor:default}
.mt.shake{border-color:var(--bad);animation:shake .3s}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}

/* build */
.answer-line{min-height:58px;border-bottom:2px solid var(--rule);display:flex;flex-wrap:wrap;gap:8px;padding-bottom:10px;align-content:flex-start}
.bank{display:flex;flex-wrap:wrap;gap:8px}
.tok{all:unset;cursor:pointer;border:2px solid var(--rule);border-bottom-width:4px;background:var(--surface);border-radius:12px;padding:8px 12px;font-weight:500}
.tok.used{visibility:hidden}
.cue-card{background:var(--sea);color:var(--sea-ink);border-radius:14px;padding:12px 14px;font-family:var(--f-mono);font-size:15px;display:flex;gap:10px;align-items:center}
.cue-card .mono{opacity:.75;display:block;margin-bottom:4px;font-size:11px}
.cue-card .small-play{background:rgba(255,255,255,.15);color:inherit}
.cue-card > div{flex:1;min-width:0}

/* type */
.field{width:100%;font:inherit;font-size:20px;padding:14px 16px;border-radius:14px;border:2px solid var(--rule);background:var(--surface);color:var(--ink)}

/* docs */
.doc{background:var(--surface);border:1px solid var(--rule);border-radius:6px;font-family:var(--f-mono);font-size:13px;box-shadow:0 10px 24px -18px var(--ink)}
.doc-head{border-bottom:2px solid var(--ink);padding:12px 14px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.doc-head b{font-size:15px;letter-spacing:.04em}
.doc-grid{display:grid;grid-template-columns:1fr 1fr}
.doc-cell{padding:8px 14px;border-bottom:1px solid var(--rule)}
.doc-cell:nth-child(odd){border-right:1px solid var(--rule)}
.doc-cell small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em}
.doc table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.doc th,.doc td{padding:7px 14px;text-align:left;border-bottom:1px solid var(--rule)}
.doc th{font-size:10px;letter-spacing:.08em;color:var(--muted);font-weight:500}
.msg{background:var(--sea-soft);border-radius:18px;padding:14px;display:flex;flex-direction:column;gap:10px}
.msg-from{display:flex;align-items:center;gap:10px}
.msg-av{width:36px;height:36px;border-radius:50%;background:var(--sea);color:var(--sea-ink);display:grid;place-items:center;font-weight:600;flex:none}
.msg-from b{display:block;font-size:15px}
.msg-from span{font-size:12px;color:var(--muted)}
.bubble{background:var(--surface);border-radius:4px 16px 16px 16px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;font-size:16px}
.bubble p{margin:0}
.bubble time{align-self:flex-end;font-size:11px;color:var(--muted);font-family:var(--f-mono)}

/* speak */
.mic-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.mic{all:unset;cursor:pointer;width:72px;height:72px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;flex:none}
.mic.rec{animation:pulse 1s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 10px color-mix(in srgb,var(--accent) 25%,transparent)}}
.say{font-family:var(--f-display);font-size:30px;font-weight:700;line-height:1.1;margin:0}
.reveal{border-top:1px dashed var(--rule);padding-top:12px;display:flex;flex-direction:column;gap:6px}
.self{display:flex;gap:10px}
.self .opt{flex:1;text-align:center}

/* check bar */
.checkbar{position:fixed;left:0;right:0;bottom:0;z-index:5;padding:14px max(16px,env(safe-area-inset-right,0px)) calc(16px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));background:var(--bg);border-top:1px solid var(--rule)}
.checkbar.ok{background:var(--ok-soft);border-color:transparent}
.checkbar.bad{background:var(--bad-soft);border-color:transparent}
.checkbar-in{max-width:428px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.verdict{display:flex;flex-direction:column;gap:2px}
.verdict b{font-family:var(--f-display);font-size:24px}
.ok .verdict b{color:var(--ok)} .bad .verdict b{color:var(--bad)}
.verdict span{font-size:15px}
.cta{all:unset;box-sizing:border-box;cursor:pointer;width:100%;text-align:center;padding:15px;border-radius:14px;background:var(--accent);color:var(--accent-ink);font-family:var(--f-display);font-size:21px;font-weight:700;letter-spacing:.03em;text-transform:uppercase}
.cta:disabled{background:var(--rule);color:var(--muted);cursor:default}
.ok .cta{background:var(--ok);color:var(--surface)}
.bad .cta{background:var(--bad);color:var(--surface)}

/* results */
.result{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.score{font-family:var(--f-display);font-size:72px;font-weight:700;line-height:1;color:var(--accent)}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important}}

/* speech check */
.mic-side{display:flex;flex-direction:column;gap:8px;align-items:flex-start;min-width:0;flex:1}
.sr-result{display:flex;flex-direction:column;gap:6px}
.sr-result p{margin:0}
.heard{font-family:var(--f-mono);font-size:15px}
.target{font-family:var(--f-display);font-size:24px;font-weight:700;line-height:1.2}
.w-ok{color:var(--ok)}
.w-miss{color:var(--bad);text-decoration:underline wavy;text-underline-offset:4px}

/* read and tap */
.tapdoc [data-t]{cursor:pointer;transition:background .15s}
.tapdoc [data-t]:hover{background:var(--sea-soft)}
.tapdoc [data-t]:focus-visible{outline:3px solid var(--accent);outline-offset:-3px}
.tapdoc .t-right{background:var(--ok-soft)!important;color:var(--ink)}
.tapdoc .t-wrong{background:var(--bad-soft)!important;color:var(--ink)}
.tapdoc .bubble p[data-t]{border-radius:8px;padding:4px 6px;margin:0 -6px}

/* home: settings button and review card */
.gear{all:unset;cursor:pointer;margin-left:auto;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;color:var(--muted);flex:none}
.gear:hover{background:var(--sea-soft)}
.review-card{all:unset;box-sizing:border-box;cursor:pointer;background:var(--surface);border:2px solid var(--accent);border-radius:16px;padding:14px 16px;display:flex;flex-direction:column;gap:4px}
.review-card .mono{color:var(--accent)}
.review-card h2{font-size:24px}
.review-card .go{align-self:flex-start;margin-top:6px;background:var(--accent);color:var(--accent-ink);border-radius:10px;padding:6px 12px;font-family:var(--f-display);font-weight:700;font-size:17px;letter-spacing:.04em}

/* lesson summary */
.lesson-done{padding-top:28px}
.done-title{font-family:var(--f-display);font-size:40px;font-weight:700;line-height:1.05}
.done-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.done-stats div{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:12px 8px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:2px}
.done-stats b{font-family:var(--f-display);font-size:34px;line-height:1;color:var(--accent)}
.done-stats span{font-size:13px;color:var(--muted)}
.module-done{border-color:var(--ok)}
.module-done h3{font-size:26px;margin-top:4px}

/* welcome */
.welcome{padding-top:28px}
.welcome-title{font-family:var(--f-display);font-size:32px;font-weight:700;line-height:1.1}
.how{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.how li{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:12px 14px;display:flex;flex-direction:column;gap:4px}
.how .mono{color:var(--accent)}
.how p{margin:0}

/* settings */
.settings{padding-top:16px}
.back-link{all:unset;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:15px;align-self:flex-start}
.setting{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.setting b{display:block;font-size:18px;font-weight:600}
.setting .sub{font-size:14px;display:block;margin-top:2px}
.seg{display:flex;border:1px solid var(--rule);border-radius:999px;overflow:hidden}
.seg-b{all:unset;cursor:pointer;padding:8px 16px;font-size:15px;color:var(--muted)}
.seg-b[aria-pressed="true"]{background:var(--sea);color:var(--sea-ink)}
.danger{color:var(--bad);border-color:var(--bad)}
.danger.armed{background:var(--bad);color:var(--surface)}

/* =========================================================
   TABS · home redesign (Nov 2026)
   ========================================================= */
.tabview{padding-block:0 calc(96px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:20px}
.tab-home{gap:14px}
.tabview:not(.tab-home){padding-top:22px}
.tab-title{font-size:36px}
.tab-sub{margin:-12px 0 0}
.see-all{align-self:center}

/* bottom tab bar */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:6;background:var(--surface);border-top:1px solid var(--rule);padding-bottom:env(safe-area-inset-bottom,0px)}
.tabbar-in{max-width:460px;margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr)}
.tab{all:unset;cursor:pointer;position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 0 9px;color:var(--muted);font-size:12.5px;font-weight:500}
.tab[aria-current="page"]{color:var(--accent)}
.tab[aria-current="page"]::before{content:"";position:absolute;top:0;left:22%;right:22%;height:3px;border-radius:0 0 3px 3px;background:var(--accent)}
.tab:focus-visible{outline:3px solid var(--accent);outline-offset:-3px}

/* home hero: the current lesson over its photo */
.home-hero{position:relative;overflow:hidden;margin-inline:calc(-1 * max(16px,env(safe-area-inset-left,0px)));padding:16px max(16px,env(safe-area-inset-left,0px)) 16px;background:var(--sea);color:#fff;display:flex;flex-direction:column;gap:18px}
.home-hero > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 62%;max-width:none}
.home-hero.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(5,15,22,.55),rgba(5,15,22,.35) 35%,rgba(5,15,22,.92))}
.home-hero > *:not(img){position:relative;z-index:1}
.home-hero .brand-mark{background:transparent;color:#FF7A45;width:28px;height:28px}
.home-hero .brand-mark svg{width:22px;height:22px}
.home-hero .brand h1{font-size:22px}
.home-hero .brand p{color:rgba(255,255,255,.8)}
.hh-body{display:flex;flex-direction:column;gap:6px}
.hh-body .mono{opacity:.85}
.hh-body h2{font-size:28px;text-shadow:0 1px 8px rgba(0,0,0,.35)}
.hh-meta{font-size:14px;opacity:.9}
.hh-actions{display:flex;gap:10px;margin-top:10px}
.hh-go{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;background:#FF6B35;color:#1A0A03}
.hh-go svg{width:22px;height:22px}
.hh-quick{all:unset;box-sizing:border-box;cursor:pointer;flex:1;display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.35);background:rgba(8,22,32,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.hh-quick span{display:flex;flex-direction:column;line-height:1.15}
.hh-quick b{font-weight:600;font-size:15px;white-space:nowrap}
.hh-quick small{font-size:13px;opacity:.8}
.hh-quick:focus-visible{outline:3px solid #FF6B35;outline-offset:2px}

/* voyage chart — a night chart of the real passage, in both themes */
.voyage{position:relative;background:#0C2230;color:#CFE0EA;border:1px solid #1D3B4E;border-radius:16px;padding:8px}
.voyage-tag{position:absolute;top:18px;left:18px;color:#FF7A45;font-size:11px;pointer-events:none}
.voyage-head,.voyage-foot{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.voyage-head .mono{color:#93A6B3}
.voyage-head b{color:#FF7A45;font-family:var(--f-display);font-size:22px;line-height:1}
.voyage-foot{font-size:15px;color:#E3EBF0}
.vlabel,.vcount{color:#93A6B3}
.vcount{font-family:var(--f-mono);font-size:12px;white-space:nowrap}
.vbar{display:block;height:4px;border-radius:4px;background:#24435A;overflow:hidden}
.vbar i{display:block;height:100%;background:#FF6B35;border-radius:4px}
.voyage svg{display:block;width:100%;height:auto;border-radius:10px;overflow:hidden}
.voyage .sea{fill:#0A1D29}
.voyage .grid path{stroke:#173447;stroke-width:.6;fill:none}
.voyage .land polygon{fill:#1B3B4F;stroke:#2B5269;stroke-width:.7;stroke-linejoin:round}
.voyage .ocean{fill:#46677D;font:italic 500 9px var(--f-body);letter-spacing:.04em}
.voyage .route-ahead{fill:none;stroke:#7FA3B9;stroke-width:1.3;stroke-dasharray:2.5 4;stroke-linecap:round;stroke-linejoin:round}
.voyage .route-sailed{fill:none;stroke:#FF6B35;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.voyage .port circle{fill:#0A1D29;stroke:#9DB6C6;stroke-width:1.4}
.voyage .port.reached circle{fill:#52C48C;stroke:#52C48C}
.voyage .port text{fill:#9DB6C6;font:500 7.5px var(--f-mono);letter-spacing:.06em}
.voyage .ship path{fill:#FF6B35;stroke:#FFD2BF;stroke-width:.8;stroke-linejoin:round}
.voyage .ship .halo{fill:rgba(255,107,53,.18);stroke:rgba(255,107,53,.45);stroke-width:.8}

/* lesson rows with photo and progress */
.lrows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;position:relative}
.lrows::before{content:"";position:absolute;left:19px;top:30px;bottom:30px;border-left:2px dashed var(--rule)}
.lrow + .lrow{border-top:1px solid var(--rule)}
.lrow-btn{all:unset;box-sizing:border-box;display:flex;align-items:center;gap:12px;width:100%;padding:10px 0}
.lrow-btn[data-n],.lrow-btn[data-test]{cursor:pointer}
.lrow-btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:12px}
.lrow-num{width:40px;height:40px;flex:none;border-radius:50%;display:grid;place-items:center;font-family:var(--f-display);font-size:19px;font-weight:700;background:var(--bg);border:2px solid var(--rule);color:var(--muted);z-index:1}
.lrow.ready .lrow-num{border-color:var(--sea);color:var(--ink)}
.lrow.current .lrow-num{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.lrow.complete .lrow-num{background:var(--ok-soft);border-color:var(--ok);color:var(--ok)}
.lrow-thumb{position:relative;width:84px;height:56px;flex:none;border-radius:10px;overflow:hidden;background:var(--sea-soft);display:grid;place-items:center}
.lrow-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.lrow-thumb i{font-style:normal;font-family:var(--f-display);font-weight:700;font-size:22px;color:var(--muted)}
.lrow.locked .lrow-thumb{opacity:.55}
.lrow-body{min-width:0;flex:1;display:flex;flex-direction:column;gap:2px}
.lrow-title{font-weight:600;line-height:1.2}
.lrow.locked .lrow-title{color:var(--muted);font-weight:500}
.lrow-meta{font-size:13px;color:var(--muted)}
.lbar{display:block;height:4px;border-radius:4px;background:var(--rule);overflow:hidden;margin-top:5px;max-width:200px}
.lbar i{display:block;height:100%;background:var(--accent);border-radius:4px}
.lrow.complete .lbar i{background:var(--ok)}
.lrow-end{color:var(--muted);flex:none;display:grid}
.lrow.test .lrow-title{font-family:var(--f-display);font-size:19px;letter-spacing:.02em}

/* practice */
.pcard{all:unset;box-sizing:border-box;cursor:pointer;display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--rule);border-radius:16px;padding:14px}
.pcard[disabled]{cursor:default;opacity:.6}
.pcard > span:nth-child(2){flex:1;display:flex;flex-direction:column}
.pcard b{font-size:18px;font-weight:600}
.pcard small{font-size:14px;color:var(--muted)}
.pcard-ico{width:46px;height:46px;flex:none;border-radius:12px;background:var(--sea-soft);display:grid;place-items:center;color:var(--accent)}
.pcard > svg{color:var(--muted)}
.pcard:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* logbook */
.lb-search{font-size:17px;padding:12px 14px}
.lb-group{display:flex;flex-direction:column;gap:4px;margin-top:14px}
.lb-list{list-style:none;margin:0;padding:0}
.lb-list li{display:flex;align-items:center;gap:12px;padding:8px 0;border-bottom:1px solid var(--rule)}
.lb-list li > div{min-width:0}
.lb-list b{font-weight:600}
.lb-list .ipa{font-family:var(--f-mono);font-size:13px;color:var(--muted)}
.lb-list small{display:block;color:var(--muted);font-size:14px}
.lb-list .small-play{width:38px;height:38px}

/* profile */
.stats4{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stats4 div{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:2px}
.stats4 b{font-family:var(--f-display);font-size:34px;line-height:1;color:var(--accent)}
.stats4 span{font-size:13px;color:var(--muted)}

/* test result */
.score.low{color:var(--bad)}

/* compact review strip on the home screen */
.review-strip{all:unset;box-sizing:border-box;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--accent);border-radius:14px;padding:8px 8px 8px 14px}
.review-strip .mono{color:var(--accent)}
.review-strip .go{background:var(--accent);color:var(--accent-ink);border-radius:10px;padding:6px 12px;font-family:var(--f-display);font-weight:700;font-size:16px;letter-spacing:.04em;text-transform:uppercase}
.review-strip:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* home: the first view fills the screen; the lessons start below it */
:root{--tabbar-h:66px}
.home-first{min-height:calc(100vh - var(--tabbar-h) - env(safe-area-inset-bottom,0px));min-height:calc(100svh - var(--tabbar-h) - env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:22px;padding-bottom:6px}
.home-first .home-hero{flex:1;min-height:300px;justify-content:space-between;padding-top:20px;padding-bottom:22px}
.home-first .hh-body{gap:8px}
.home-first .hh-actions{margin-top:14px}
.tab-home{gap:28px}
.scroll-hint{all:unset;cursor:pointer;align-self:center;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:13px;padding:6px 10px;margin-top:auto}
.scroll-hint:focus-visible{outline:3px solid var(--accent);border-radius:8px}

/* beta note */
.beta-note{display:flex;gap:10px;align-items:flex-start;border:1px dashed var(--rule);border-radius:14px;padding:10px 12px}
.beta-note .mono{color:var(--accent);flex:none;padding-top:2px}
.beta-note p{margin:0;font-size:14px;color:var(--muted)}

/* install card */
.install-card{display:flex;flex-direction:column;gap:12px}
.ic-head{display:flex;gap:12px;align-items:center}
.ic-head b{display:block;font-size:18px;font-weight:600}
.ic-head small{display:block;font-size:14px;color:var(--muted)}
.ic-ico{width:46px;height:46px;flex:none;border-radius:12px;background:var(--sea-soft);display:grid;place-items:center;color:var(--accent)}
.ic-steps{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px;font-size:15px}
.result .install-card{align-self:stretch;margin-top:8px}

/* feedback */
.stars{display:flex;gap:4px}
.star{all:unset;cursor:pointer;width:44px;height:44px;display:grid;place-items:center;color:var(--muted);fill:transparent;border-radius:10px}
.star.on{color:var(--gold);fill:var(--gold)}
.star:focus-visible{outline:3px solid var(--accent)}
.fb-quick{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.fb-quick b{font-size:18px;font-weight:600}
.fb-text{font-size:17px;resize:vertical;min-height:80px}
.fb-form{display:flex;flex-direction:column;gap:8px}
.fb-form .field{font-size:17px;padding:12px 14px}
.fb-l{font-weight:600;margin-top:8px}
.fb-l small{font-weight:400;color:var(--muted)}
.fb-check{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-top:10px;cursor:pointer}
.fb-check input{width:22px;height:22px;flex:none;margin:1px 0 0;accent-color:var(--accent)}
.fb-view{padding-bottom:120px}