@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.start{inset-inline-start:var(--spacing)}.block{display:block}.table{display:table}}:root{--blue:#2866f0;--blue-dark:#194fc8;--blue-soft:#e9f0ff;--page:#edf1f5;--surface:#fff;--warm:#fffdf9;--ink:#121827;--muted:#5f6675;--border:#e0e6ef;--beige:#f5efe6;--green:#6ea47f;--gold:#d79d46;--rose:#e87475}*{box-sizing:border-box}html{background:var(--page)}body{background:var(--page);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Apple SD Gothic Neo,Noto Sans KR,sans-serif}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}.prototype-page{min-height:100vh}.demo-toolbar{border-bottom:1px solid var(--border);z-index:40;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;justify-content:space-between;align-items:center;height:76px;padding:0 34px;display:flex;position:sticky;top:0}.toolbar-brand{align-items:center;gap:12px;display:flex}.toolbar-brand>span:last-child{flex-direction:column;gap:3px;display:flex}.toolbar-brand strong{font-size:16px}.toolbar-brand small{color:var(--muted);letter-spacing:.04em;font-size:11px}.brand-mark,.mini-logo{color:#fff;background:var(--blue);border-radius:11px;place-items:center;font-weight:900;display:inline-grid}.brand-mark{width:40px;height:40px;font-size:25px}.mini-logo{border-radius:7px;width:23px;height:23px;margin-right:6px;font-size:15px}.role-switch{background:#f2f5f9;border-radius:14px;padding:4px;display:flex}.role-switch button{min-height:40px;color:var(--muted);background:0 0;border:0;border-radius:11px;padding:0 18px;font-weight:700}.role-switch button.active{color:var(--blue);background:#fff;box-shadow:0 2px 9px #12182714}.linked-mode{color:#34734a;align-items:center;min-height:40px;padding:0 16px;font-size:12px;font-weight:800;display:flex}.media-error{color:#9b3f42;background:#fff5f5;border:1px solid #f2caca;border-radius:12px;align-items:center;gap:12px;max-width:760px;margin:12px auto -2px;padding:11px 14px;font-size:12px;font-weight:700;display:flex}.media-error button{color:inherit;background:0 0;border:0;margin-left:auto;font-weight:800}.teacher-console{grid-template-columns:290px minmax(500px,1fr) 410px;gap:0;min-height:calc(100vh - 76px);display:grid}.teacher-sidebar{border-right:1px solid var(--border);background:#fff;padding:25px 20px}.session-heading{margin-bottom:18px}.session-heading h1{letter-spacing:-.03em;margin:12px 0 5px;font-size:22px}.session-heading p{color:var(--muted);margin:0;font-size:14px}.status-pill{color:#34734a;background:#edf7f0;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;display:inline-flex}.video-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.video-tile{aspect-ratio:4/3;background:linear-gradient(155deg,#dce8ff 0%,#f4f8ff 65%,#c8dbff 100%);border:1px solid #cbd8e9;border-radius:15px;position:relative;overflow:hidden}.live-video{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.live-video.is-mirrored{transform:scaleX(-1)}.student-video{background:linear-gradient(155deg,#fbe9d5 0%,#fff9f2 65%,#f6d8bd 100%)}.video-person{background:#3a5c95;border-radius:50% 50% 18% 18%;position:absolute;inset:17% 19% -23%}.student-person{background:#bd7a58}.video-face{aspect-ratio:1;color:#513829;background:#f2cbaa;border-radius:50%;place-items:center;width:51%;font-size:11px;font-weight:800;display:grid;position:absolute;top:-2%;left:25%}.video-hair{z-index:2;background:#263044;border-radius:60% 60% 24% 24%;width:54%;height:27%;position:absolute;top:-8%;left:23%}.video-name{color:#fff;background:#121827ba;border-radius:8px;padding:3px 7px;font-size:10px;font-weight:700;position:absolute;bottom:7px;left:8px}.mic-status{width:20px;height:20px;color:var(--green);background:#ffffffd9;border-radius:50%;place-items:center;font-size:8px;display:grid;position:absolute;top:7px;right:7px}.mic-status.is-off{color:var(--rose)}.live-dot{background:var(--green);border-radius:50%;width:7px;height:7px;margin-right:4px;display:inline-block}.waiting-dot{background:var(--gold);border-radius:50%;width:8px;height:8px;display:inline-block}.desktop-media-controls{grid-template-columns:1fr 1fr;gap:7px;margin-top:8px;display:grid}.desktop-media-controls button{border:1px solid var(--border);min-height:37px;color:var(--muted);background:#f8fafc;border-radius:10px;font-size:10px;font-weight:800}.desktop-media-controls.is-active button:first-child{color:var(--blue);background:var(--blue-soft);border-color:#c9d9fb}.call-status{border:1px solid var(--border);color:var(--muted);background:#f8fafc;border-radius:10px;margin-top:8px;padding:8px 10px;font-size:10px;font-weight:800}.call-status--connected{color:#34734a;background:#edf8f1;border-color:#bfe1ca}.call-status--failed{color:#9b3f42;background:#fff5f5;border-color:#f2caca}.sync-status{background:#f6fbf8;border:1px solid #d9eddf;border-radius:12px;align-items:center;gap:10px;margin:12px 0 22px;padding:10px 12px;display:flex}.sync-status>span{color:#fff;background:var(--green);border-radius:50%;place-items:center;width:26px;height:26px;font-weight:900;display:grid}.sync-status div{flex-direction:column;gap:2px;display:flex}.sync-status strong{font-size:12px}.sync-status small{color:var(--muted);font-size:10px}.sync-status.peer-online{background:#edf8f1;border-color:#bfe1ca}.nav-label{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px 5px;font-size:11px;font-weight:800;display:block}.stage-navigation{flex-direction:column;gap:5px;display:flex}.stage-navigation button{min-height:47px;color:var(--muted);text-align:left;background:0 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var(--border);min-height:28px;color:var(--muted);background:#fff;border-radius:8px;font-size:8px;font-weight:800}.caption-card{background:#fff;border:1px solid #dbe4f2;border-radius:11px;margin:0 11px 8px;padding:9px 11px}.caption-state{color:var(--green);font-size:8px;font-weight:800}.caption-state--listening,.caption-state--transcribing,.caption-state--translating{color:#966529}.caption-state--error{color:#9b3f42}.caption-korean{margin:5px 0 2px;font-size:11px;font-weight:800;line-height:1.35}.caption-translation{color:var(--blue);margin:0;font-size:9px;line-height:1.35}.lesson-meta{justify-content:space-between;align-items:flex-end;padding:8px 13px;display:flex}.lesson-meta>div:first-child{flex-direction:column;gap:2px;display:flex}.lesson-meta span{color:var(--muted);font-size:8px}.lesson-meta strong{font-size:12px}.lesson-progress{gap:3px;display:flex}.lesson-progress span{color:#a7afbb;background:#e3e7ed;border-radius:50%;place-items:center;width:16px;height:16px;font-size:7px;font-weight:800;display:grid}.lesson-progress span.is-done{color:#fff;background:var(--blue)}.student-content{padding:0 11px 14px}.student-content .learning-card{border-radius:15px;padding:15px}.student-content .learning-card h2{font-size:20px}.student-content .eyebrow{font-size:8px}.student-content .situation-scene{min-height:190px}.student-content .situation-scene--compact{min-height:120px}.student-content .expression-box{padding:10px}.student-content .expression-box strong{font-size:24px}.student-content .expression-box p{font-size:10px}.student-content .waiting-guide{font-size:9px}.student-content .primary-button,.student-content .secondary-button{min-height:43px;font-size:11px}.student-content .voice-orb{width:104px;height:104px;margin:15px auto 8px}.student-content .target-sentence{font-size:22px}.student-content .sentence-translation{font-size:11px}.student-content 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69%);border-radius:18px;min-height:345px;position:relative;overflow:hidden}.situation-scene--compact{min-height:210px}.scene-sun{background:#ffd869;border-radius:50%;width:56px;height:56px;position:absolute;top:9%;right:7%;box-shadow:0 0 0 10px #ffd86938}.scene-cloud,.scene-cloud:before,.scene-cloud:after{background:#fffc;border-radius:999px;position:absolute}.scene-cloud{width:70px;height:19px;top:14%;left:9%}.scene-cloud:before{content:"";width:30px;height:30px;bottom:0;left:10px}.scene-cloud:after{content:"";width:35px;height:35px;bottom:0;right:8px}.cloud-two{opacity:.8;top:24%;left:52%;transform:scale(.65)}.station-sign{color:#fff;background:#2f5796;border:4px solid #fff;border-radius:7px;padding:7px 13px;font-size:13px;font-weight:900;position:absolute;bottom:30%;left:6%;box-shadow:0 4px #224473}.station-sign:after{content:"";background:#5f6d74;width:5px;height:68px;position:absolute;top:100%;left:50%}.scene-person{z-index:3;width:92px;height:140px;position:absolute;bottom:9%;left:18%}.person-head{color:#503d35;background:#f3c9a5;border-top:14px solid #273249;border-radius:48% 48% 44% 44%;place-items:center;width:57px;height:62px;font-size:22px;font-weight:900;display:grid;position:absolute;top:0;left:19px}.person-body{background:var(--blue);border-radius:43px 43px 12px 12px;width:87px;height:86px;position:absolute;bottom:0;left:3px}.phone{color:#fff;background:#172033;border:4px solid #fff;border-radius:50%;place-items:center;width:37px;height:37px;font-size:18px;animation:2.4s ease-in-out infinite phone-ring;display:grid;position:absolute;top:40px;right:3px}.speech-bubble{color:#31445d;z-index:4;background:#fff;border:3px solid #8db6dc;border-radius:18px 18px 18px 4px;padding:13px 17px;font-size:13px;line-height:1.4;position:absolute;top:17%;left:36%;box-shadow:0 5px #4b739a21}.speech-bubble strong{color:var(--blue);font-size:1.18em}.train{background:#f8fbff;border:5px solid #31547f;border-radius:40px 10px 9px 9px;width:45%;height:28%;animation:5s ease-in-out infinite train-arrive;position:absolute;bottom:10%;right:-8%}.train:after{content:"";background:var(--blue);height:13px;position:absolute;bottom:18%;left:0;right:0}.train-window{background:#9bc9e9;border:3px solid #31547f;border-radius:5px;width:18%;height:30%;position:absolute;top:16%;left:18%}.train-window.second{left:43%}.train-door{z-index:2;background:#dbefff;border:3px solid #31547f;width:17%;height:66%;position:absolute;top:15%;right:14%}.train-wheel{z-index:4;background:#a7b3c4;border:5px solid #29364a;border-radius:50%;width:18px;height:18px;position:absolute;bottom:-12px}.wheel-one{left:24%}.wheel-two{right:18%}.rail{background:#596471;height:5px;position:absolute;bottom:7%;left:0;right:0;box-shadow:0 14px #596471}.ticket-stamp{color:#39704e;text-align:center;background:#ffffffe6;border:3px dashed #5d9a73;border-radius:10px;padding:9px 11px;font-size:9px;animation:5s infinite stamp-pop;position:absolute;top:8%;right:5%;transform:rotate(7deg)}.ticket-stamp strong{font-size:12px}@keyframes phone-ring{0%,8%,16%,to{transform:rotate(0)}4%,12%{transform:rotate(-13deg)}6%,14%{transform:rotate(13deg)}}@keyframes train-arrive{0%,12%{transform:translate(30%)}35%,82%{transform:translate(0)}to{transform:translate(30%)}}@keyframes stamp-pop{0%,30%{opacity:0;transform:scale(.4)rotate(7deg)}38%,85%{opacity:1;transform:scale(1)rotate(7deg)}to{opacity:0}}.expression-box{background:var(--blue-soft);border:1px solid #d6e3fb;border-radius:16px;margin-top:15px;padding:18px 20px}.expression-box>span{color:var(--blue);font-size:10px;font-weight:900;display:block}.expression-box strong{letter-spacing:-.04em;margin-top:3px;font-size:34px;display:block}.expression-box p{color:var(--muted);margin:5px 0 0;font-size:13px}.waiting-guide{color:var(--muted);background:#f5f7fa;border-radius:12px;margin-top:13px;padding:10px 13px;font-size:12px}.waiting-guide span{color:var(--blue);margin-right:6px;font-weight:900}.target-sentence{max-width:690px;line-height:1.25;font-size:clamp(26px,3vw,42px)!important}.sentence-translation{color:var(--muted);margin:-8px 0 18px;font-size:15px}.voice-orb{color:#fff;background:linear-gradient(145deg,#2d6cf3,#1752d4);border-radius:50%;justify-content:center;align-items:center;gap:4px;width:132px;height:132px;margin:22px auto 8px;display:flex;box-shadow:0 18px 35px #2866f040}.voice-orb span{opacity:.82;font-size:11px;font-weight:900;position:absolute;transform:translateY(-32px)}.voice-orb i{opacity:.75;background:#fff;border-radius:5px;width:5px;height:25px}.voice-orb i:nth-of-type(2),.voice-orb i:nth-of-type(4){height:42px}.voice-orb i:nth-of-type(3){height:60px}.voice-orb.is-speaking i{animation:.7s ease-in-out infinite alternate voice-wave}.voice-orb.is-speaking i:nth-of-type(2){animation-delay:-.2s}.voice-orb.is-speaking i:nth-of-type(4){animation-delay:-.4s}@keyframes voice-wave{to{opacity:.45;transform:scaleY(.35)}}.voice-label{color:var(--muted);text-align:center;margin:0 0 16px;font-size:11px}.button-row{gap:9px;margin-top:15px;display:flex}.primary-button,.secondary-button{border-radius:14px;min-height:49px;padding:0 18px;font-size:14px;font-weight:800}.primary-button{border:1px solid var(--blue);color:#fff;background:var(--blue);box-shadow:0 7px 16px #2866f02e}.primary-button:hover{background:var(--blue-dark)}.secondary-button{border:1px solid var(--border);color:var(--ink);background:#fff}.learning-card .button-row>button{flex:1}.text-button{color:var(--blue);background:0 0;border:0;margin:12px auto 0;font-size:12px;font-weight:800;display:block}.repeat-help{color:var(--muted);font-size:14px}.recording-visual{background:#f7faff;border:1px solid #d9e3f3;border-radius:18px;flex-direction:column;justify-content:center;align-items:center;min-height:245px;margin:22px 0 15px;padding:30px;display:flex}.recording-ring{background:#fff;border:2px solid #ffd4d5;border-radius:50%;place-items:center;width:78px;height:78px;display:grid;box-shadow:0 0 0 10px #fff0f0}.recording-ring span{color:var(--rose);font-size:28px}.wave-bars{align-items:center;gap:5px;height:46px;margin:22px 0 14px;display:flex}.wave-bars i{background:#afc4ec;border-radius:4px;width:4px;height:10px}.wave-bars i:nth-child(3n){height:28px}.wave-bars i:nth-child(4n){height:38px}.is-recording .wave-bars i{background:var(--blue);animation:.55s ease-in-out infinite alternate recording-wave}.is-recording .wave-bars i:nth-child(2n){animation-delay:-.3s}@keyframes recording-wave{to{opacity:.45;height:8px}}.recording-visual 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print{@page{margin:16mm;size:A4}body{background:#fff}.no-print,.teacher-console,.student-mode{display:none!important}.print-report-only{display:block}.print-report-only .learning-card{max-width:760px;box-shadow:none;border:0;margin:0 auto}.report-actions{display:none}}