@layer theme{:root,:host{--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-geist-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,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, 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:where(:not(iframe)){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}.relative{position:relative}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.table{display:table}.capitalize{text-transform:capitalize}}:root{--background:#f7f9fc;--foreground:#132033;--blue:#1f6feb;--yellow:#f2b705;--green:#1f9d55;--coral:#ef5b5b;--ink:#132033;--muted:#667085;--surface:#fff;--line:#d8e0ea;--shadow:0 18px 50px #1f314e1f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}:focus-visible{outline-offset:3px;outline:3px solid #f2b705}.app-shell{grid-template-columns:240px minmax(0,1fr);min-height:100svh;display:grid}.side-nav{color:#fff;background:#0f2746;height:100svh;padding:24px 18px;position:sticky;top:0}.logo{align-items:center;gap:10px;font-size:22px;font-weight:900;display:flex}.logo-mark{color:#fff;background:linear-gradient(135deg,#1f6feb,#f2b705);border-radius:12px;place-items:center;width:42px;height:42px;display:grid}.nav-link{color:#dbeafe;border-radius:8px;align-items:center;gap:10px;min-height:44px;margin-top:8px;padding:12px 14px;display:flex}.nav-link:hover,.nav-link.active{color:#fff;background:#ffffff1f}.top-stats{flex-wrap:wrap;gap:10px;display:flex}.stat-pill{border:1px solid var(--line);background:#fff;border-radius:999px;align-items:center;gap:6px;min-height:36px;padding:7px 12px;font-weight:800;display:inline-flex}.main-area{width:100%;max-width:1180px;margin:0 auto;padding:28px}.hero{background:radial-gradient(circle at 90% 10%,#f2b70538,#0000 30%),linear-gradient(135deg,#f7fbff 0%,#eaf3ff 46%,#fff8db 100%);grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);align-items:center;gap:36px;min-height:88svh;padding:48px max(22px,6vw);display:grid}.hero h1{letter-spacing:0;color:#0f2746;margin:0;font-size:clamp(42px,7vw,84px);line-height:.95}.hero p{color:#40536d;max-width:680px;font-size:20px;line-height:1.6}.hero-art{min-height:470px;box-shadow:var(--shadow);color:#fff;background:linear-gradient(160deg,#1f6feb,#0f2746);border-radius:8px;align-content:end;padding:26px;display:grid;position:relative;overflow:hidden}.hero-art:before{content:"";clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);opacity:.95;background:#f2b705;width:180px;height:180px;position:absolute;inset:40px 32px auto auto}.primary-btn,.secondary-btn{border:0;border-radius:8px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 18px;font-weight:900;display:inline-flex}.primary-btn{background:var(--blue);color:#fff;box-shadow:0 8px #164e9d}.secondary-btn{color:#0f2746;border:1px solid var(--line);background:#fff}.course-grid{grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:22px;display:grid}.section-band{border:1px solid var(--line);background:#fff;border-radius:8px;margin-bottom:18px;padding:20px;box-shadow:0 8px 28px #1018280d}.path{gap:18px;padding:20px 0 4px;display:grid}.lesson-node{border:1px solid var(--line);background:#fff;border-radius:8px;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:14px;width:min(100%,560px);padding:14px;display:grid}.node-icon{color:#164e9d;background:#dbeafe;border:4px solid #fff;border-radius:50%;place-items:center;width:58px;height:58px;font-weight:900;display:grid;box-shadow:0 0 0 2px #bad7ff}.node-icon.done{color:#166534;background:#dff7e8;box-shadow:0 0 0 2px #9be5b4}.node-icon.locked{color:#98a2b3;background:#eef2f7;box-shadow:0 0 0 2px #d0d5dd}.panel,.card{border:1px solid var(--line);background:#fff;border-radius:8px;padding:18px;box-shadow:0 8px 28px #1018280d}.lesson-screen{background:#f7f9fc;grid-template-rows:auto 1fr auto;min-height:100svh;display:grid}.lesson-top{border-bottom:1px solid var(--line);background:#fff;align-items:center;gap:14px;padding:14px max(16px,4vw);display:flex}.progress-track{background:#e5edf7;border-radius:99px;flex:1;height:12px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,#1f6feb,#f2b705);height:100%}.exercise{width:min(760px,100%);margin:0 auto;padding:32px 18px 120px}.exercise h1{margin:0 0 10px;font-size:clamp(26px,5vw,42px)}.choice-grid,.word-bank{gap:12px;margin-top:24px;display:grid}.choice-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.choice,.word-chip{border:2px solid var(--line);background:#fff;border-radius:8px;min-height:52px;padding:12px 14px;font-weight:800}.choice.selected,.word-chip.selected{border-color:var(--blue);background:#eaf3ff}.answer-area{background:#fff;border:2px dashed #9db9dc;border-radius:8px;flex-wrap:wrap;gap:8px;min-height:70px;padding:12px;display:flex}.feedback{padding:18px max(16px,4vw) calc(18px + env(safe-area-inset-bottom));color:#102033;border-top:1px solid #00000014;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -16px 40px #10182826}.feedback.correct{background:#dff7e8}.feedback.incorrect{background:#ffe2df}.mobile-tabs{padding:8px 10px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);z-index:20;background:#fff;display:none;position:fixed;bottom:0;left:0;right:0}.mobile-tabs a{color:#40536d;flex:1;place-items:center;gap:2px;min-height:50px;font-size:12px;display:grid}.table-wrap{border:1px solid var(--line);background:#fff;border-radius:8px;overflow:auto}table{border-collapse:collapse;width:100%;min-width:760px}th,td{border-bottom:1px solid var(--line);text-align:left;padding:12px}th{background:#f2f6fb}.lesson-label{color:var(--blue);text-transform:uppercase;letter-spacing:.04em;margin:0 0 8px;font-weight:900}.exercise-count{color:var(--muted);margin-bottom:10px;font-size:13px;font-weight:800}.instruction{color:var(--muted);font-size:17px}.lesson-action{z-index:25;padding:14px max(16px,4vw) calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fffffff7;justify-content:center;gap:12px;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 28px #10182814}.lesson-action .primary-btn{min-width:220px}.sentence-builder{min-height:92px;color:var(--muted);background:#fff;border:2px dashed #9db9dc;border-radius:8px;flex-wrap:wrap;align-items:center;gap:9px;padding:16px;font-weight:800;display:flex}.blank-slot{border-bottom:3px solid var(--blue);min-width:92px;color:var(--foreground);text-align:center;padding:8px 12px}.vocab-card,.speaking-card,.story-card{border:1px solid var(--line);text-align:center;background:#fff;border-radius:8px;padding:28px;position:relative;box-shadow:0 8px 28px #1018280d}.vocab-card h2{margin:12px 0 4px;font-size:56px}.vocab-card p{margin:0 0 16px;font-size:24px}.vocab-card small{color:var(--muted);font-size:16px}.audio-button,.mic-button{width:64px;height:64px;color:var(--blue);background:#eaf3ff;border:0;border-radius:50%;place-items:center;display:inline-grid}.speaking-card h2{margin:16px 0 4px}.speaking-card p{font-size:24px;font-weight:800}.listen-button{color:#164e9d;background:#eaf3ff;border:2px solid #bad7ff;border-radius:8px;justify-content:center;align-items:center;gap:14px;width:100%;min-height:108px;font-size:20px;font-weight:900;display:flex}.completion-panel{text-align:center}.completion-panel .primary-btn{margin-top:24px}.completion-icon{color:#166534;background:#dff7e8;border-radius:50%;place-items:center;width:74px;height:74px;margin:0 auto 16px;display:grid}@media (max-width:600px){.main-area{padding:14px}.lesson-top{padding:12px 14px}.exercise{padding:24px 14px 120px}.exercise h1{font-size:30px;line-height:1.08}.choice-grid{grid-template-columns:1fr}.choice{text-align:left;min-height:58px}.word-bank{grid-template-columns:repeat(2,minmax(0,1fr))}.word-chip{min-height:50px;padding:10px 8px}.sentence-builder{align-content:center;min-height:104px}.lesson-action{justify-content:stretch}.lesson-action button{flex:1;min-width:0;padding:0 10px}.lesson-action .primary-btn{min-width:0}.feedback{padding:18px 14px calc(18px + env(safe-area-inset-bottom))}.feedback .primary-btn{width:100%}.vocab-card h2{font-size:44px}}@media (max-width:860px){.app-shell{padding-bottom:74px;display:block}.side-nav{display:none}.mobile-tabs{display:flex}.main-area{padding:16px}.hero{grid-template-columns:1fr;min-height:auto;padding:34px 18px 90px}.hero-art{min-height:300px}.course-grid{grid-template-columns:1fr}.lesson-node{grid-template-columns:52px minmax(0,1fr)}.lesson-node .secondary-btn{grid-column:1/-1}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}