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@font-face{font-family:Geist;src:url('design/fonts/geist-52306abf.woff2');font-weight:100 900;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
:root{color-scheme:light;--ruby:#980010;--ink:#29363c;--muted:#7a7f80;--line:#e7ded8;--pearl:linear-gradient(135deg,#fffdfb,#f0ebea);--red:linear-gradient(180deg,#ffffff36,transparent 24%,transparent 74%,#25000444),radial-gradient(120% 155% at 52% 35%,#c81225 0%,#980010 52%,#690008 100%);--shadow:0 3px 5px #5c3d2d0b,0 12px 25px #5c3d2d0c,inset 0 0 0 2px #ffffffb5}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:linear-gradient(120deg,#fbf9f5,#eee9e9);font:15px/1.5 Geist,Arial,sans-serif}button,input,select{font:inherit}button,a{touch-action:manipulation;-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.35}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #2b77ad;outline-offset:3px}[hidden]{display:none!important}.skip{position:fixed;top:-90px;z-index:20;background:#fff;padding:14px}.skip:focus{top:8px}h1,h2,p{margin:0}
.masthead{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:82px;padding:13px 27px;color:#fff;background:var(--red);border:1px solid #ffffffa0;border-bottom:3px solid #d7b764;border-radius:0 0 22px 22px;box-shadow:var(--shadow),0 5px 14px #84182024}.brand{display:flex;align-items:center;gap:12px}.seal{display:grid;place-items:center;flex-shrink:0;width:47px;height:47px;border-radius:50%;border:2px solid #e6c475;background:#fff9e7;color:var(--ruby);font:700 19px Georgia,serif;box-shadow:0 0 0 3px #fff4}.brand strong{font-size:15px}.brand small{display:block;font-size:8px;letter-spacing:1.4px;color:#ffe292;font-weight:800;margin-top:3px}.site-title{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:800}.site-title b{color:#ffe18b;font-size:22px}.site-title span{border-left:2px solid #fff7;padding-left:12px}.source-link{background:var(--pearl);border:1px solid #fff7;color:var(--ruby);padding:11px 18px;border-radius:24px;font-size:12px;font-weight:750;white-space:nowrap}
main{max-width:1800px;margin:auto;padding:14px 20px 18px}.part-tabs{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:940px;margin:auto}.part-tabs button{display:grid;grid-template-columns:auto 1fr;column-gap:22px;align-items:center;border:1px solid #ded6d3;border-radius:19px;padding:9px 23px;background:var(--pearl);box-shadow:var(--shadow)}.part-tabs button>span{grid-row:span 2;font-size:11px;font-weight:850;letter-spacing:1px;border-right:1px solid #d7c5bb;padding-right:23px;color:var(--ruby)}.part-tabs strong{font-size:16px}.part-tabs small{font-size:12px;color:var(--ruby);font-weight:650}.part-tabs button[aria-current=true]{background:var(--red);color:#fff;border-color:#fff9}.part-tabs button[aria-current=true]>span{color:white}.part-tabs button[aria-current=true] small{color:#ffe196}
.lesson-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:25px 5px 14px}.eyebrow{font-size:9px;letter-spacing:2px;color:var(--ruby);font-weight:800;margin-bottom:5px}h1{font-size:28px;line-height:1.25;font-weight:750;letter-spacing:-.8px}.lesson-picker{display:flex;align-items:center;gap:10px}.lesson-picker label{font-size:12px;color:var(--muted)}select{background:#fffcf7;border:1px solid #ded4ca;border-radius:12px;padding:10px 34px 10px 12px;max-width:190px;font-size:13px;font-weight:650;color:var(--ink)}#page-ref{font-size:11px;color:var(--muted)}.group-nav{display:flex;gap:7px;overflow-x:auto;padding:3px 3px 8px;scrollbar-width:thin}.group-nav a{flex:0 0 auto;min-width:65px;text-align:center;font-size:12px;font-weight:750;padding:10px 13px;border:1px solid #e1d8d4;border-radius:13px;background:var(--pearl);box-shadow:inset 0 0 0 2px #ffffff70}.group-nav a[aria-current=page]{background:var(--red);color:white;border-color:#ffffff99}.guide{font-size:12px;color:#5e686b;margin:8px 4px 15px}.guide span{float:right;color:#718077;font-size:11px}.workspace{display:grid;grid-template-columns:minmax(230px,1fr) minmax(360px,1.65fr) minmax(235px,.94fr);gap:15px;align-items:start}.panel{min-width:0;border:1px solid #e3dcd7;border-radius:23px;background:var(--pearl);box-shadow:var(--shadow);overflow:hidden}.panel-head{display:flex;align-items:center;gap:11px;padding:17px 17px 15px;min-height:85px;border-bottom:1px solid var(--line)}.panel-number{display:grid;place-items:center;flex-shrink:0;background:#f5e7e7;border:1px solid #fff;border-radius:50%;width:28px;height:28px;font-size:11px;font-weight:800;color:var(--ruby)}h2{font-size:15px;font-weight:750;line-height:1.3}.panel-head p{font-size:10px;color:var(--muted);margin-top:5px}.panel-scroll{height:clamp(410px,calc(100dvh - 400px),760px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#c7aaa7 transparent}.translation-card{margin:0 15px;padding:20px 1px;border-bottom:1px solid var(--line);transition:background .2s}.translation-card:last-child{border-bottom:0}.translation-card.playing{background:#fff0c4;border-radius:12px}.translation-label{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;gap:8px}.speaker{display:inline-flex;align-items:center;justify-content:center;min-width:30px;min-height:26px;padding:2px 7px;border-radius:7px;background:#efe7e1;color:#8a3340;font-size:11px;font-weight:800}.translation-card p{font-size:15px;line-height:1.85}.context-play{border:0;border-radius:20px;background:#fffaf2;color:var(--ruby);padding:6px 10px;min-height:32px;font-size:10px;font-weight:700}.context-play:hover{background:#f3e2dd}.audio-panel{background:#fffdfa}.audio-wrap{position:relative;height:calc(clamp(410px,calc(100dvh - 400px),760px) + 40px)}iframe{display:block;width:100%;height:100%;border:0;opacity:0}iframe.ready{opacity:1}#frame-loading{position:absolute;left:20px;top:25px;font-size:13px;color:var(--muted)}.vocabulary-panel .panel-head{gap:8px}.eye-toggle{margin-left:auto;border:1px solid #e5d6ce;background:#fff9f3;color:var(--ruby);border-radius:9px;padding:7px;font-size:10px;white-space:nowrap;min-height:32px}.vocab-row{padding:12px 17px 10px;border-bottom:1px solid var(--line)}.word-label{display:flex;align-items:baseline;gap:9px;margin-bottom:6px}.word-index{font-size:9px;color:#a6968f;min-width:16px}.english-word{color:#267245;font-size:15px;font-weight:650;overflow-wrap:anywhere}.vocabulary-panel.words-hidden .english-word{color:transparent;background:repeating-linear-gradient(90deg,#d6dfd4 0 12px,transparent 12px 17px) left center/100% 2px no-repeat;user-select:none}.meaning-input{width:100%;min-height:34px;border:0;border-bottom:1px dashed #b5b9a8;background:transparent;color:#4d5255;font-size:13px;border-radius:0;padding:6px 0}.meaning-input::placeholder{font-size:11px;color:#a4a6a0}.meaning-input:focus{outline:none;border-bottom:2px solid #9a3145;background:#fffbf4}.save-status{font-size:9px;color:#788279;min-height:40px;padding:12px 17px;background:#f5f1ea}.mobile-tabs{display:none}
@media(min-width:1550px){.translation-card p{font-size:16px}.workspace{gap:20px}}
@media(max-width:1100px){.site-title span{display:none}.workspace{grid-template-columns:minmax(210px,1fr) minmax(310px,1.4fr) minmax(205px,.9fr);gap:10px}.panel-head{padding:15px 12px;gap:7px}h2{font-size:13px}.panel-number{width:24px;height:24px}.translation-card p{font-size:14px}.vocab-row{padding:12px}.guide span{display:block;float:none;margin-top:4px}}
@media(max-width:800px){.masthead{min-height:70px;padding:12px 15px;gap:8px}.brand strong{font-size:12px}.brand small{font-size:7px}.seal{width:37px;height:37px;font-size:16px}.site-title{display:none}.source-link{padding:9px 12px;font-size:10px}main{padding:12px}.part-tabs button{padding:10px;column-gap:9px}.part-tabs button>span{padding-right:9px;font-size:9px}.part-tabs strong{font-size:13px}.part-tabs small{font-size:11px}.lesson-bar{margin-top:20px;align-items:start}h1{font-size:24px}.eyebrow{font-size:8px;letter-spacing:1px}.lesson-picker{flex-direction:column;gap:4px;align-items:end}.lesson-picker label{display:none}select{font-size:12px;max-width:150px;padding:8px}.guide{font-size:11px;line-height:1.65;margin-bottom:13px}.mobile-tabs{display:flex;margin:0 0 12px;border-radius:14px;padding:4px;background:#e9e1de;gap:4px}.mobile-tabs button{flex:1;border:0;background:transparent;padding:10px 4px;border-radius:10px;font-size:12px;font-weight:750;color:#775962}.mobile-tabs button[aria-selected=true]{background:var(--red);color:white;box-shadow:0 2px 4px #84182029}.workspace{display:block}.workspace[data-panel=audio] .panel:not(.audio-panel),.workspace[data-panel=translation] .panel:not(.translation-panel),.workspace[data-panel=vocabulary] .panel:not(.vocabulary-panel){display:none}.panel-head{min-height:74px;padding:15px}h2{font-size:15px}.panel-head p{font-size:11px}.panel-scroll{height:60dvh;min-height:380px}.audio-wrap{height:65dvh;min-height:430px}.translation-card p{font-size:16px}.vocab-row{padding:14px 20px}.english-word{font-size:16px}.meaning-input{font-size:16px;min-height:42px}.context-play{min-height:40px;font-size:12px}.group-nav a{min-width:57px;padding:9px 11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

@media(min-width:801px){.translation-panel .panel-scroll{height:calc(clamp(410px,calc(100dvh - 400px),760px) + 40px)}}

.english-word{font-weight:500}.english-word strong{font-weight:750}u{text-underline-offset:3px;text-decoration-thickness:1px}.words-hidden .english-word *{text-decoration:none}

/* The translation now travels with its audio phrase in one shared panel. */
.workspace{grid-template-columns:minmax(0,2.7fr) minmax(245px,1fr)}
.translation-toggle{margin-left:auto;flex-shrink:0;min-height:39px;border:1px solid #dbb5b7;border-radius:20px;padding:9px 16px;background:#fff8ee;color:var(--ruby);font-size:12px;font-weight:750;box-shadow:inset 0 0 0 1px #fff9}
.translation-toggle[aria-pressed=true]{background:var(--red);color:#fff;border-color:#fff8}
@media(max-width:800px){.workspace{display:block}.audio-panel .panel-head{gap:8px}.audio-panel h2{font-size:14px}.audio-panel .panel-head p{font-size:10px}.translation-toggle{padding:8px 11px;font-size:11px}.audio-panel .panel-number{display:none}}

/* Compact lesson navigation after removal of the heading/dropdown row. */
.part-tabs+.group-nav{margin-top:18px}

/* Masthead actions. */
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
@media(max-width:1200px){.site-title span{display:none}}
@media(max-width:600px){.brand>span:last-child{display:none}.header-actions{gap:7px}}
@media(min-width:801px){.audio-panel .audio-wrap{height:calc(clamp(410px,calc(100dvh - 400px),760px) + 125px)}}

/* All lesson destinations share one horizontal navigation strip. */
.group-nav{display:flex;flex-wrap:nowrap;align-items:center;gap:16px;margin:0 0 9px;padding:7px 9px;overflow-x:auto;border:1px solid #e2d9d3;border-radius:18px;background:var(--pearl);box-shadow:var(--shadow);overscroll-behavior-x:contain}
.nav-part-group{display:flex;align-items:center;flex:0 0 auto;gap:6px;white-space:nowrap}
.nav-part-group+.nav-part-group{border-left:1px solid #d6c3bc;padding-left:16px}
.nav-part-label{padding:0 5px;color:var(--ruby);font-size:10px;font-weight:850;letter-spacing:.8px}
.group-nav a{display:block;min-width:48px;min-height:40px;padding:10px 11px;font-size:11px;border-radius:11px}
@media(max-width:800px){.group-nav{gap:12px;padding:6px;margin-bottom:8px}.nav-part-group+.nav-part-group{padding-left:12px}.nav-part-label{font-size:9px}.group-nav a{min-width:44px;min-height:42px;padding:11px 9px}}

/* Fill the space freed by the footer with the lesson's scrollable panels. */
body{height:100dvh;min-height:540px;display:flex;flex-direction:column}
.masthead{flex-shrink:0}
main{display:flex;flex-direction:column;flex:1;min-height:0;width:100%;margin:0 auto;padding-bottom:12px}
.group-nav,.mobile-tabs{flex-shrink:0}
.workspace{flex:1;min-height:0;align-items:stretch}
.workspace>.panel{display:flex;flex-direction:column;min-height:0}
.audio-panel .audio-wrap{flex:1;min-height:0;height:auto}
.vocabulary-panel .panel-scroll{flex:1;min-height:0;height:auto}
.panel-head,.save-status{flex-shrink:0}
@media(max-width:800px){.workspace{display:grid;grid-template-columns:minmax(0,1fr)}}

/* Anchor the toggle to the panel edge, outside the scrolling lesson frame. */
.audio-panel{position:relative;overflow:visible}
.audio-panel .audio-wrap{overflow:hidden;border-radius:inherit}
.audio-panel>.translation-toggle{position:absolute;z-index:5;top:0;right:22px;transform:translateY(-50%);margin:0;white-space:nowrap;box-shadow:0 2px 6px #5c3d2d12,inset 0 0 0 1px #fff9}
.group-nav{margin-bottom:26px}
@media(max-width:800px){.group-nav{margin-bottom:8px}.mobile-tabs{margin-bottom:26px}.audio-panel>.translation-toggle{right:16px}}

/* Compact Grammar A vocabulary reveal, using the original word as the control. */
.vocab-row{display:flex;align-items:center;gap:8px;padding:4px 16px;border-bottom:1px solid #e7ded8}
.word-index{flex:0 0 16px}
.vocab-trigger{position:relative;display:block;flex:1;min-width:0;min-height:64px;margin:0;padding:21px 2px;border:0;background:transparent;text-align:left;line-height:1.35;isolation:isolate}
.vocab-trigger .english-word{position:relative;border-radius:8px;padding:2px 3px;box-decoration-break:clone;-webkit-box-decoration-break:clone;transition:background .15s,box-shadow .15s}
.vocab-meaning,.vocab-ipa{position:absolute;left:0;width:100%;text-align:left;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .15s;font:500 13px/1.2 Arial,Helvetica,sans-serif;overflow-wrap:anywhere}
.vocab-meaning{bottom:calc(100% - 20px);color:#238442}
.vocab-ipa{top:calc(100% - 20px);color:#b20c30}
.vocab-trigger[data-revealed=true]{z-index:4}
.vocab-trigger[data-revealed=true] .english-word{color:#302824;background:linear-gradient(145deg,#fffdf2e6,#f8e7afbf 65%,#f6e4b8cc);box-shadow:inset 0 1px 1px #ffffffed,inset 0 -1px 1px #bd934438,0 2px 6px #9b75251a}
.vocab-trigger[data-revealed=true] :is(.vocab-meaning,.vocab-ipa){visibility:visible;opacity:1}
.vocab-trigger[aria-pressed=true] .english-word{box-shadow:inset 0 -2px #b20c30,0 2px 6px #9b75251a}
.vocabulary-picture{position:fixed;z-index:150;pointer-events:none;overflow:hidden;border:1px solid #c68e99;border-radius:16px;background:#fff;box-shadow:0 8px 28px #37171a26}
.vocabulary-picture img{display:block;width:100%;height:100%;object-fit:contain}
.vocabulary-status{position:fixed;z-index:200;left:50%;top:90px;transform:translateX(-50%);width:max-content;max-width:min(420px,calc(100vw - 28px));padding:10px 16px;border-radius:16px;background:#fff8ee;box-shadow:0 4px 18px #37171a26;color:#8a1327;font-size:13px}
.vocabulary-status:empty{display:none}
@media(max-width:800px){.vocab-row{padding:3px 18px}.vocab-meaning,.vocab-ipa{font-size:14px}.vocab-trigger{min-height:68px}}