@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-vietnamese-400-normal.1pwu3v5_twm1d.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-400-normal.0sssa-e6tuv_9.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-latin-ext-400-normal.2emse1ml055ds.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-400-normal.3ehsei323a8hh.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-latin-400-normal.20cnwjfb-fa4e.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-400-normal.31tzb8zv1crmm.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:500;src:url(../media/be-vietnam-pro-vietnamese-500-normal.2he4sf8_cpynl.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-500-normal.2u2mzdl2dm9f3.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:500;src:url(../media/be-vietnam-pro-latin-ext-500-normal.3loba40y_pzcz.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-500-normal.2638m93a1w8k9.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:500;src:url(../media/be-vietnam-pro-latin-500-normal.1opmeqmrxkaxz.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-500-normal.2_p68uxzutffr.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:600;src:url(../media/be-vietnam-pro-vietnamese-600-normal.2ty1g2z_v1cl1.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-600-normal.2_ac-vcv4r-oy.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:600;src:url(../media/be-vietnam-pro-latin-ext-600-normal.3hhkkk_gs8c-f.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-600-normal.0079-w66a2img.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:600;src:url(../media/be-vietnam-pro-latin-600-normal.1ki7gj-rcm5qg.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-600-normal.0adpqh__9xf_o.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-vietnamese-700-normal.1y0_3hqalafhh.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-700-normal.3yhcoo9p-j5h8.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-latin-ext-700-normal.15oo2z8h14z71.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-700-normal.1eom1lrh39_44.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-latin-700-normal.0o-vexq-1rj8v.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-700-normal.3ac-im9md2i79.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-vietnamese-400-italic.2dlc0krns-hm3.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-400-italic.18lqefu2wr4ia.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-latin-ext-400-italic.42zih3r-_vksp.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-400-italic.20mfd_jf4x4p6.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:400;src:url(../media/be-vietnam-pro-latin-400-italic.3bo5m2nb0xemd.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-400-italic.44yc4rvqkdd_4.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-vietnamese-700-italic.1_-b3cu19w-l0.woff2)format("woff2"),url(../media/be-vietnam-pro-vietnamese-700-italic.3lpuolw90k6bx.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-latin-ext-700-italic.1ezpcgjfcdq4k.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-ext-700-italic.019lrdn53xb8i.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:italic;font-display:swap;font-weight:700;src:url(../media/be-vietnam-pro-latin-700-italic.248r45w-0w5ca.woff2)format("woff2"),url(../media/be-vietnam-pro-latin-700-italic.3d-wd5rtnnd12.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--bg:#f6f7fa;--surface:#fff;--ink:#1b2232;--muted:#586174;--line:#dce1ea;--line-strong:#c5ccda;--accent:#3448c5;--accent-ink:#26379d;--accent-soft:#e8ebfa;--ok:#1e7148;--ok-soft:#e5f3ec;--warn:#8a5a00;--warn-soft:#fbf1dc;--err:#a3282b;--err-soft:#fbe9e9;--focus:#7f8ff0;--font-ui:"Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-ko:"Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans CJK KR", sans-serif;--text-caption:.875rem;--text-label:.9375rem;--text-body:1rem;--text-section:1.1875rem;--text-card:1.75rem;--text-page:2rem;--weight-body:400;--weight-label:500;--weight-semibold:600;--weight-bold:700;--leading-body:1.65;--leading-heading:1.4;--leading-caption:1.5;--step--1:var(--text-caption);--step-0:var(--text-body);--step-1:var(--text-section);--step-2:var(--text-section);--step-3:var(--text-page);--radius-s:8px;--radius-m:14px;--tap:44px;--measure:42rem}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:var(--step-0);line-height:var(--leading-body);margin:0}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--accent-ink);text-underline-offset:3px}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}h1,h2,h3{line-height:var(--leading-heading);font-weight:var(--weight-bold);letter-spacing:-.01em;margin:0 0 .5em}h1{font-size:var(--step-3)}h2{font-size:var(--step-2)}h3{font-size:var(--step-1)}p{margin:0 0 .9em}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden;position:absolute!important}.skip-link{background:var(--accent);color:#fff;border-radius:var(--radius-s);z-index:10;padding:10px 14px;position:absolute;top:-60px;left:12px}.skip-link:focus{top:12px}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.site-header__inner{flex-wrap:wrap;align-items:center;gap:16px;max-width:64rem;margin:0 auto;padding:10px 20px;display:flex}.brand{font-size:var(--text-section);line-height:var(--leading-heading);font-weight:var(--weight-bold);color:var(--ink);margin-right:auto;text-decoration:none}.brand span{color:var(--accent)}.site-nav{flex-wrap:wrap;gap:4px;display:flex}.site-nav a{font-size:var(--text-label);font-weight:var(--weight-label);color:var(--muted);border-radius:var(--radius-s);min-height:var(--tap);align-items:center;padding:8px 12px;text-decoration:none;display:inline-flex}.site-nav a:hover{color:var(--ink);background:var(--bg)}.site-nav a[aria-current=page]{color:var(--accent-ink);background:var(--accent-soft);font-weight:var(--weight-semibold)}.page{max-width:64rem;margin:0 auto;padding:28px 20px 64px}.page--narrow{max-width:calc(var(--measure) + 40px)}.site-footer{max-width:64rem;color:var(--muted);font-size:var(--step--1);margin:0 auto;padding:0 20px 32px}.lede{color:var(--muted);font-size:var(--text-body);max-width:var(--measure)}.muted{color:var(--muted)}.small{line-height:var(--leading-caption);font-size:var(--step--1)}.btn{font-size:var(--text-label);min-height:var(--tap);border-radius:var(--radius-s);border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font-weight:var(--weight-semibold);cursor:pointer;line-height:var(--leading-caption);justify-content:center;align-items:center;gap:8px;padding:9px 16px;text-decoration:none;display:inline-flex}.btn:hover{border-color:var(--accent)}.btn:disabled,.btn[aria-disabled=true]{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn--primary:hover{background:var(--accent-ink)}.btn--quiet{color:var(--accent-ink);background:0 0;border-color:#0000;padding-inline:10px}.btn--quiet:hover{background:var(--accent-soft);border-color:#0000}.btn--danger{color:var(--err);border-color:#e3b9ba}.btn--large{min-height:52px;font-size:var(--text-body);padding:12px 22px}.btn-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.speak{width:var(--tap);height:var(--tap);border:1.5px solid var(--accent);background:var(--surface);color:var(--accent);cursor:pointer;border-radius:50%;flex:none;place-items:center;display:inline-grid}.speak:hover{background:var(--accent-soft)}.speak[aria-pressed=true]{background:var(--accent);color:#fff}.speak:disabled{border-color:var(--line-strong);color:var(--line-strong);cursor:not-allowed;background:var(--surface)}.speak svg{width:20px;height:20px}.speak--small{border-width:1.5px;width:36px;height:36px}.speak--small svg{width:16px;height:16px}.line{grid-template-columns:auto 1fr;align-items:start;gap:4px 14px;padding:12px 0;display:grid}.line+.line{border-top:1px solid var(--line)}.line__en{font-size:var(--step-1);line-height:var(--leading-body);font-weight:var(--weight-label);padding-top:7px}.line__body{min-width:0}.line__vi{color:var(--muted);font-size:var(--step-0)}.line__note{font-size:var(--step--1);color:var(--muted)}.line__actions{margin-top:4px}.line--active .line__en{color:var(--accent-ink);text-decoration:underline;-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent);text-underline-offset:6px;text-decoration-thickness:2px}html[data-show-vi=false] .vi{display:none}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);padding:22px}.panel+.panel{margin-top:16px}.panel--tint{background:var(--accent-soft);border-color:#0000}.note{border-left:3px solid var(--accent);margin:16px 0;padding:4px 0 4px 14px}.note--warn{border-left-color:var(--warn)}.notice{border-radius:var(--radius-s);background:var(--accent-soft);margin:12px 0;padding:12px 14px}.notice--warn{background:var(--warn-soft);color:#5e3d00}.notice--err{background:var(--err-soft);color:#6f1a1c}.notice--ok{background:var(--ok-soft);color:#134d31}.notice p:last-child{margin-bottom:0}.chip{font-size:var(--step--1);background:var(--bg);border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:2px 10px;display:inline-block}.chip--accent{background:var(--accent-soft);color:var(--accent-ink);border-color:#0000}.chip-row{flex-wrap:wrap;gap:6px;display:flex}.field{margin:12px 0;display:block}.field__label{font-size:var(--text-label);font-weight:var(--weight-semibold);margin-bottom:8px;display:block}.input,.textarea,.select{width:100%;min-height:var(--tap);border:1px solid var(--line-strong);border-radius:var(--radius-s);background:var(--surface);padding:10px 12px}.textarea{resize:vertical;min-height:120px;line-height:var(--leading-caption)}.input--en,.textarea--en{font-size:var(--step-1)}.select{width:auto}fieldset{border:0;margin:0;padding:0}legend{padding:0}.choices{flex-wrap:wrap;gap:8px;margin:10px 0;display:flex}.choice{position:relative}.choice input{opacity:0;position:absolute;inset:0}.choice span{min-height:var(--tap);border:1px solid var(--line-strong);border-radius:var(--radius-s);background:var(--surface);cursor:pointer;align-items:center;padding:8px 16px;display:inline-flex}.choice input:checked+span{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-ink);font-weight:var(--weight-semibold)}.choice input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}details.reveal{margin:10px 0}details.reveal>summary{cursor:pointer;color:var(--accent-ink);font-weight:var(--weight-semibold);min-height:var(--tap);align-items:center;list-style-position:inside;display:flex}.feedback{border-radius:var(--radius-s);margin:10px 0 0;padding:10px 12px}.feedback--ok{background:var(--ok-soft);color:#134d31}.feedback--try{background:var(--warn-soft);color:#5e3d00}.feedback--empty{background:var(--bg);color:var(--muted)}.feedback:empty{display:none}.toolbar{font-size:var(--step--1);flex-wrap:wrap;align-items:center;gap:8px 16px;display:flex}.toolbar label{white-space:nowrap;align-items:center;gap:8px;min-width:0;max-width:100%;display:inline-flex}.toolbar .select{min-width:0;max-width:100%;min-height:36px;padding:4px 8px}.voice-status{font-size:var(--step--1);color:var(--muted);margin:6px 0 0}.lesson-head{max-width:calc(var(--measure) + 40px);margin:0 auto;padding:20px 20px 0}.lesson-head__title{flex-wrap:wrap;align-items:baseline;gap:12px;display:flex}.lesson-head__title h1{font-size:var(--text-page);margin:0}.track{grid-template-columns:repeat(var(--steps,9), 1fr);gap:4px;margin:16px 0 8px;padding:0;list-style:none;display:grid}.track button{cursor:pointer;background:0 0;border:0;align-items:center;width:100%;min-height:28px;padding:0;display:flex}.track button:before{content:"";background:var(--line);border-radius:3px;width:100%;height:6px;display:block}.track button[data-done=true]:before{background:#9aa6e6}.track button[aria-current=step]:before{background:var(--accent);border-radius:5px;height:10px}.track-label{font-size:var(--step--1);color:var(--muted);justify-content:space-between;gap:12px;display:flex}.step{max-width:calc(var(--measure) + 40px);margin:0 auto;padding:16px 20px 120px}.step__eyebrow{color:var(--accent-ink);font-weight:var(--weight-semibold);font-size:var(--step--1);margin:8px 0 4px}.step h2:focus{outline:none}.step h2:focus-visible{outline:3px solid var(--focus)}.step__intro{color:var(--muted);margin-bottom:18px}.step-section{margin-top:28px}.step-actions{background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-top:1px solid var(--line);padding:10px 20px calc(10px + env(safe-area-inset-bottom));z-index:5;position:sticky;bottom:0}.step-actions__inner{max-width:var(--measure);justify-content:space-between;align-items:center;gap:8px;margin:0 auto;display:flex}.step-actions__mark[aria-pressed=true]{border-color:var(--ok);color:var(--ok);background:var(--ok-soft)}.phrase{border-top:1px solid var(--line);padding:18px 0 6px}.phrase:first-of-type{border-top:0}.phrase__head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;display:flex}.phrase__en{font-size:var(--step-2);font-weight:var(--weight-semibold);margin:0}.words{grid-template-columns:repeat(auto-fill,minmax(13rem,1fr));gap:8px;margin:0;padding:0;list-style:none;display:grid}.words li{border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);padding:8px 12px}.pattern-form{font-size:var(--step-1);font-weight:var(--weight-semibold);color:var(--accent-ink)}.turn{grid-template-columns:4.5rem 1fr;gap:8px;padding:4px 0;display:grid}.turn__who{font-size:var(--step--1);color:var(--muted);font-weight:var(--weight-semibold);padding-top:20px}.turn--learner .turn__who{color:var(--accent-ink)}.turn--learner .line{border-left:3px solid var(--accent);padding-left:12px}.turn .line+.line,.turn .line{border-top:0}.turn-hidden{border-left:3px dashed var(--accent);color:var(--muted);padding:14px 0 14px 12px}.turn-wait{font-weight:var(--weight-semibold);color:var(--accent-ink)}.countdown{align-items:center;gap:12px;margin:10px 0;display:flex}.countdown__bar{background:var(--line);border-radius:3px;flex:1;height:6px;overflow:hidden}.countdown__fill{background:var(--accent);transform-origin:0;height:100%}.prompt-card{border-top:1px solid var(--line);padding:18px 0}.prompt-card:first-of-type{border-top:0}.rp-meter{font-size:var(--step--1);color:var(--muted)}.kw-list{flex-wrap:wrap;gap:6px;margin:8px 0;padding:0;list-style:none;display:flex}.kw{font-size:var(--step--1);border:1px solid var(--line);border-radius:999px;padding:2px 10px}.kw--found{background:var(--ok-soft);color:#134d31;border-color:#0000}.kw--missing{background:var(--bg);color:var(--muted)}.frame{font-size:var(--step-1);margin:0;padding:0;line-height:1.9;list-style:none}.recorder__time{font-variant-numeric:tabular-nums;font-weight:var(--weight-semibold)}.rec-dot{background:var(--err);border-radius:50%;width:10px;height:10px;display:inline-block}audio,video{width:100%;max-width:100%}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:var(--step-0)}th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:10px 12px}th{color:var(--muted);font-weight:var(--weight-semibold)}.home-grid{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);align-items:start;gap:20px;display:grid}.hero{padding:28px}.hero__en{font-size:var(--text-card);line-height:var(--leading-heading);font-weight:var(--weight-bold);margin:0 0 12px}.path{margin:0;padding:0;list-style:none}.path li{border-top:1px solid var(--line);grid-template-columns:2.25rem 1fr;gap:12px;padding:14px 0;display:grid}.path li:first-child{border-top:0}.path__num{background:var(--accent);color:#fff;width:2.25rem;height:2.25rem;font-weight:var(--weight-bold);border-radius:50%;place-items:center;display:grid}.path__num--later{background:var(--bg);color:var(--muted);border:1px dashed var(--line-strong)}.session-list{margin:8px 0 16px;padding-left:1.2em}.meter{background:var(--line);border-radius:4px;height:8px;margin:8px 0;overflow:hidden}.meter>span{background:var(--accent);height:100%;display:block}.lib-list{margin:0;list-style:none}.lib-item{border-top:1px solid var(--line);padding:16px 0}.lib-item:first-child{border-top:0}.lib-item a.lib-item__title{font-weight:var(--weight-bold);font-size:var(--step-1);color:var(--ink);text-decoration:none}.lib-item a.lib-item__title:hover{color:var(--accent-ink);text-decoration:underline}.notion{max-width:var(--measure)}.notion>*+*{margin-top:.75em}.notion h2,.notion h3,.notion h4{margin-top:1.4em}.notion blockquote{border-left:3px solid var(--line-strong);margin:0;padding-left:14px}.notion .callout{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-s);gap:12px;padding:12px 14px;display:flex}.notion pre{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-s);font-size:var(--step--1);padding:12px;overflow-x:auto}.notion img{border-radius:var(--radius-s);border:1px solid var(--line);background:var(--surface);max-width:100%;height:auto}.notion figure{margin:0}.notion figcaption{font-size:var(--step--1);color:var(--muted);margin-top:4px}.notion .columns{grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:16px;display:grid}.notion details{border-left:2px solid var(--line);padding-left:12px}.notion details>summary{cursor:pointer;font-weight:var(--weight-semibold);min-height:36px}.embed-frame{border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);width:100%}.embed-frame--video{aspect-ratio:16/9;height:auto}.link-card{border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);flex-direction:column;gap:2px;padding:10px 14px;display:flex}.unsupported{border:1px dashed var(--warn);border-radius:var(--radius-s);background:var(--warn-soft);color:#5e3d00;font-size:var(--step--1);padding:10px 14px}.player{border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);padding:12px}.player__row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.player__seek{accent-color:var(--accent);flex:12rem}.player__time{font-variant-numeric:tabular-nums;font-size:var(--step--1);color:var(--muted)}.site-nav__logout{border-left:1px solid var(--line);margin:0 0 0 4px;padding-left:8px;display:inline-flex}.site-nav__logout .btn{color:var(--muted);font-weight:var(--weight-label)}.login{background:radial-gradient(60rem 28rem at 50% -8rem, var(--accent-soft), transparent 70%), var(--bg);place-items:center;min-height:calc(100dvh - 66px);padding:40px 20px 72px;display:grid}.login__card{background:var(--surface);border:1px solid var(--line);border-radius:18px;width:100%;max-width:25rem;padding:36px 32px 28px;box-shadow:0 1px 2px #1b22320a,0 12px 32px -12px #1b223224}.login__mark{background:var(--accent);color:#fff;width:48px;height:48px;font-size:var(--text-section);font-weight:var(--weight-semibold);border-radius:12px;place-items:center;margin-bottom:20px;display:grid}.login__title{font-size:var(--text-page);margin-bottom:8px}.login__sub{color:var(--muted);margin-bottom:20px}.login__form .field{margin:0 0 16px}.login__form .input:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.login__form .input[aria-invalid=true]{border-color:#d9a3a4}.login__error{margin:0 0 16px}.password{position:relative}.password .input{padding-right:64px}.password__toggle{min-height:32px;color:var(--accent-ink);font-size:var(--step--1);font-weight:var(--weight-semibold);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:4px 10px;position:absolute;top:50%;right:6px;transform:translateY(-50%)}.password__toggle:hover{background:var(--accent-soft)}.login__hint{font-size:var(--step--1);color:var(--warn);margin:6px 0 0}.login__submit{width:100%;margin-top:4px}.login__submit:disabled{opacity:.7;cursor:progress}.login__foot{border-top:1px solid var(--line);color:var(--muted);font-size:var(--step--1);text-align:center;margin:20px 0 0;padding-top:16px}html{font-synthesis:none}:lang(ko){--font-ui:var(--font-ko);font-family:var(--font-ui)}strong,b{font-weight:var(--weight-bold)}code,pre{font-family:inherit}h2,h3,h4{font-size:var(--text-section);font-weight:var(--weight-semibold)}h4{line-height:var(--leading-heading);margin-bottom:.5em}.section-title{font-size:var(--text-section);font-weight:var(--weight-semibold)}.section-title--spaced{margin-top:20px}.session-list li+li,.notion li+li{margin-top:8px}.path li>div,.home-grid>div,.notion .columns>div,.notion .callout>div{min-width:0}.path__title{font-size:var(--text-card);font-weight:var(--weight-bold);line-height:var(--leading-heading);color:var(--ink);margin-bottom:8px;text-decoration:none;display:inline-block}.path__title:hover,.path__title:focus-visible{color:var(--accent-ink);text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:2px}.page,.lesson-head,.step,.login__card{overflow-wrap:anywhere}.line__en,.frame{font-size:var(--text-body);font-weight:var(--weight-body)}.frame li+li{margin-top:8px}.notion{line-height:var(--leading-body)}.notion pre,.notion code{font-family:inherit}.notion .columns{grid-template-columns:repeat(auto-fit,minmax(min(14rem,100%),1fr))}.notion figcaption,.line__note,.voice-status,.login__foot{line-height:var(--leading-caption)}.login__form .input,.login__submit{min-height:48px;padding-block:9px}.login__submit{font-size:var(--text-body)}@media (max-width:760px){:root{--text-card:1.5rem;--text-page:1.875rem}.home-grid{grid-template-columns:1fr}.page{padding:20px 16px 48px}.panel,.hero{padding:18px}.lesson-head,.step{padding-left:16px;padding-right:16px}.turn{grid-template-columns:1fr;gap:0}.turn__who{padding-top:8px}.site-header__inner{gap:6px;padding:8px 12px}.site-nav a{padding:6px 10px}.step-actions__inner .btn{padding-inline:12px}.step-actions__inner{flex-wrap:wrap}.login{place-items:start center;padding:24px 16px 48px}.login__card{padding:28px 20px 22px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.notion details>summary{display:list-item}