/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@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-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::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;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]){-webkit-appearance:button;appearance:button}::file-selector-button{-webkit-appearance: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{.fixed{position:fixed}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.table{display:table}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{--ink:#142218;--paper:#f4f1e8;--paper-deep:#e9e3d6;--white:#fffefa;--line:#d7d1c5;--muted:#667068;--accent:#c8ef4b;--accent-dark:#577600;--mode-tint:#edf8c9;--danger:#c7593f;--shadow:0 24px 70px #19281c1a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,Noto Sans JP,Yu Gothic UI,Hiragino Kaku Gothic ProN,sans-serif}button,a{font:inherit}button{color:inherit}.app-shell{background:radial-gradient(circle at 79% 11%, var(--accent) 0, transparent 23rem), linear-gradient(90deg, transparent 49.85%, #14221809 50%, transparent 50.15%), var(--paper);min-height:100vh}@supports (color:color-mix(in lab, red, red)){.app-shell{background:radial-gradient(circle at 79% 11%, color-mix(in srgb, var(--accent) 28%, transparent) 0, transparent 23rem), linear-gradient(90deg, transparent 49.85%, #14221809 50%, transparent 50.15%), var(--paper)}}.app-shell[data-mode=toeic]{--accent:#56dcc0;--accent-dark:#08765f;--mode-tint:#d9f6ee}.site-header{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:20;background:#f4f1e8c7;justify-content:space-between;align-items:center;height:82px;padding:0 clamp(20px,5vw,76px);display:flex;position:sticky;top:0}.brand{color:inherit;align-items:center;gap:12px;text-decoration:none;display:flex}.brand-mark{width:42px;height:42px;color:var(--paper);background:var(--ink);border-radius:50%;place-items:center;font:800 21px/1 Georgia,serif;display:grid;position:relative}.brand-mark:after{content:"";background:var(--accent);border-radius:50%;width:9px;height:9px;position:absolute;top:2px;right:1px}.brand strong{letter-spacing:.01em;font-size:15px;display:block}.brand small{color:var(--muted);letter-spacing:.08em;margin-top:3px;font-size:10px;display:block}.header-meta{align-items:center;gap:18px;font-size:11px;display:flex}.save-status{color:var(--muted)}.save-status span{color:var(--accent-dark);margin-right:5px;font-size:8px}.edition-label{border:1px solid var(--ink);text-transform:uppercase;letter-spacing:.08em;border-radius:999px;padding:7px 12px;font-weight:700}.page-wrap{width:min(1380px,100% - 40px);margin:0 auto}.hero{grid-template-columns:1.2fr .8fr;align-items:end;gap:clamp(40px,8vw,120px);padding:clamp(52px,7vw,96px) clamp(0px,2vw,30px) 58px;display:grid}.eyebrow,.question-kicker{letter-spacing:.18em;color:var(--accent-dark);font-size:11px;font-weight:800}.hero h1{letter-spacing:-.055em;margin:18px 0 22px;font-family:Georgia,Yu Mincho,serif;font-size:clamp(43px,5.8vw,82px);font-weight:500;line-height:1.05}.hero h1 em{z-index:1;font-style:normal;position:relative}.hero h1 em:after{content:"";background:var(--accent);z-index:-1;height:.24em;position:absolute;bottom:.08em;left:-.03em;right:-.03em;transform:rotate(-1.5deg)}.hero-copy{max-width:620px;color:var(--muted);font-size:14px;line-height:1.9}.mode-panel{border:1px solid var(--line);box-shadow:10px 10px 0 var(--paper-deep);background:#fffefab3;padding:26px}.control-heading{align-items:center;gap:13px;margin-bottom:20px;display:flex}.control-heading>span,.side-label>span{background:var(--ink);width:27px;height:27px;color:var(--paper);border-radius:50%;place-items:center;font:700 9px/1 sans-serif;display:inline-grid}.control-heading strong,.control-heading small{display:block}.control-heading strong{font-size:13px}.control-heading small{color:var(--muted);margin-top:3px;font-size:10px}.segmented{background:#e7e2d7;border-radius:12px;padding:4px;display:grid}.mode-segmented{grid-template-columns:1fr 1fr}.segmented button{cursor:pointer;background:0 0;border:0;border-radius:9px;padding:13px 10px;font-size:12px;font-weight:800}.segmented button.active{background:var(--ink);color:var(--white);box-shadow:0 4px 12px #00000024}.mode-description{align-items:flex-start;gap:12px;padding-top:18px;display:flex}.mode-dot{background:var(--accent);width:10px;height:10px;box-shadow:0 0 0 4px var(--mode-tint);border-radius:50%;margin:5px 2px 0 4px}.mode-description strong,.mode-description small{display:block}.mode-description strong{font-size:12px}.mode-description small{color:var(--muted);margin-top:4px;font-size:10px;line-height:1.6}.module-preview{border:1px solid var(--line);background:#fffefaa6;border-bottom:0;grid-template-columns:repeat(5,1fr);display:grid}.module-preview button{border:0;border-right:1px solid var(--line);text-align:left;cursor:pointer;background:0 0;min-height:94px;padding:18px}.module-preview button:last-child{border-right:0}.module-preview button>span{color:var(--accent-dark);letter-spacing:.12em;font:800 9px/1 sans-serif;display:block}.module-preview button strong{margin-top:10px;font:500 17px/1.1 Georgia,Yu Mincho,serif;display:block}.module-preview button small{color:var(--muted);margin-top:6px;font-size:8px;display:block}.module-preview button.active{background:var(--ink);color:var(--white)}.module-preview button.active small{color:var(--accent)}.module-preview button:disabled{cursor:default;opacity:.58}.study-grid{border:1px solid var(--line);box-shadow:var(--shadow);background:#fffefa80;grid-template-columns:290px minmax(0,1fr);display:grid}.study-sidebar{border-right:1px solid var(--line);flex-direction:column;padding:34px 26px;display:flex}.side-section+.side-section{border-top:1px solid var(--line);margin-top:38px;padding-top:32px}.side-label{text-transform:uppercase;letter-spacing:.11em;align-items:center;gap:10px;margin:0 0 18px;font-size:10px;font-weight:800;display:flex}.direction-controls{gap:9px;display:grid}.direction-controls button{border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:5px;grid-template-columns:38px 20px 38px;justify-content:center;align-items:center;gap:5px;padding:15px;display:grid}.direction-controls button>span{font:800 12px/1 sans-serif}.direction-controls button b{color:#8c928c}.direction-controls button small{color:var(--muted);grid-column:1/-1;margin-top:4px;font-size:9px}.direction-controls button.active{background:var(--ink);color:var(--white);border-color:var(--ink)}.direction-controls button.active b,.direction-controls button.active small{color:var(--accent)}.stats-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.stats-row>div{background:var(--paper-deep);padding:15px 12px}.stats-row strong{font:500 28px/1 Georgia,serif;display:block}.stats-row sup{font-size:12px}.stats-row small{color:var(--muted);margin-top:8px;font-size:8px;display:block}.review-button{border:1px solid var(--ink);text-align:left;cursor:pointer;background:0 0;align-items:center;gap:12px;width:100%;margin-top:12px;padding:13px;display:flex}.review-button:disabled{opacity:.45;cursor:not-allowed}.review-button>span:first-child{background:var(--accent);border-radius:50%;place-items:center;width:28px;height:28px;font-weight:900;display:grid}.review-button strong,.review-button small{display:block}.review-button strong{font-size:10px}.review-button small{color:var(--muted);margin-top:3px;font-size:8px}.keyboard-note{color:#8b908b;text-align:center;margin:auto 0 0;padding-top:32px;font-size:8px}kbd{border:1px solid var(--line);background:var(--white);box-shadow:0 1px 0 var(--line);padding:2px 5px;font-family:inherit}.quiz-card{background:var(--white);min-height:660px;padding:clamp(28px,4.5vw,64px);position:relative;overflow:hidden}.quiz-card:after{content:"PEAK";color:#14221806;letter-spacing:-.08em;pointer-events:none;font:900 150px/1 sans-serif;position:absolute;bottom:-38px;right:-18px}.quiz-topline{z-index:1;justify-content:space-between;align-items:center;display:flex;position:relative}.quiz-mode{background:var(--ink);color:var(--white);letter-spacing:.1em;padding:7px 10px;font-size:9px;font-weight:800}.category-chip{color:var(--accent-dark);background:var(--mode-tint);margin-left:8px;padding:7px 10px;font-size:9px;font-weight:800}.question-count{color:var(--muted);letter-spacing:.08em;font-size:11px}.question-count b{color:var(--ink);font:500 23px/1 Georgia,serif}.progress-track{background:#e9e6de;height:3px;margin:18px 0 60px}.progress-track span{background:var(--accent-dark);height:100%;transition:width .3s;display:block}.question-area{text-align:center;margin-bottom:42px}.question-area h2{letter-spacing:-.035em;margin:14px 0 6px;font-family:Georgia,Yu Mincho,serif;font-size:clamp(38px,5vw,66px);font-weight:500;line-height:1.18}.pronunciation{color:#92978f;font:13px/1.4 Georgia,serif}.choice-grid{z-index:1;grid-template-columns:1fr 1fr;gap:12px;display:grid;position:relative}.choice-button{border:1px solid var(--line);background:var(--white);text-align:left;cursor:pointer;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;min-height:72px;padding:15px 17px;font-size:13px;transition:transform .15s,border-color .15s,background .15s;display:grid}.choice-button:not(:disabled):hover{border-color:var(--ink);transform:translateY(-2px)}.choice-number{border:1px solid var(--line);width:25px;height:25px;color:var(--muted);border-radius:50%;place-items:center;font:700 9px/1 sans-serif;display:grid}.choice-button.correct{background:var(--mode-tint);border-color:var(--accent-dark)}.choice-button.correct .choice-number{background:var(--accent);border-color:var(--accent);color:var(--ink)}.choice-button.incorrect{border-color:var(--danger);background:#fff1ed}.choice-button.muted{opacity:.45}.choice-button b{color:var(--accent-dark);font-size:18px}.choice-button.incorrect b{color:var(--danger)}.feedback{border-top:1px solid var(--line);z-index:2;grid-template-columns:36px 1fr auto;align-items:start;gap:14px;margin-top:18px;padding:20px 0 0;display:grid;position:relative}.feedback-icon{background:var(--accent);border-radius:50%;place-items:center;width:34px;height:34px;font-weight:900;display:grid}.feedback.retry .feedback-icon{color:#792c1a;background:#f4c4b7}.feedback strong{font-size:12px}.feedback p{color:var(--muted);margin:7px 0 5px;font-size:10px;line-height:1.6}.feedback small{color:#858c85;font-size:9px}.next-button,.primary-button{background:var(--ink);color:var(--white);cursor:pointer;border:0;padding:13px 17px;font-size:10px;font-weight:800}.next-button span{color:var(--accent);margin-left:8px}.result-view{text-align:center;z-index:2;flex-direction:column;justify-content:center;align-items:center;min-height:530px;display:flex;position:relative}.result-ring{--score:0%;background:conic-gradient(var(--accent-dark) var(--score), var(--paper-deep) 0);border-radius:50%;place-items:center;width:164px;height:164px;margin:24px 0;display:grid;position:relative}.result-ring:after{content:"";background:var(--white);border-radius:50%;position:absolute;inset:9px}.result-ring span{z-index:1;position:relative}.result-ring strong{font:500 54px/1 Georgia,serif}.result-ring small{color:var(--muted)}.result-view h2{margin:8px 0;font:500 clamp(27px,4vw,42px)/1.2 Georgia,Yu Mincho,serif}.result-view>p:not(.question-kicker){color:var(--muted);font-size:12px}.result-actions{align-items:center;gap:20px;margin-top:24px;display:flex}.primary-button{padding:15px 24px}.text-button{border:0;border-bottom:1px solid var(--ink);cursor:pointer;background:0 0;padding:5px 0;font-size:10px;font-weight:800}.hero-compact{padding-top:clamp(42px,5vw,70px);padding-bottom:42px}.hero-compact h1{font-size:clamp(40px,5vw,68px)}.module-tabs button{transition:background .2s,color .2s}.module-tabs button:not(.active):hover{background:var(--mode-tint)}.curation-note{border-left:3px solid var(--accent-dark);background:var(--mode-tint);margin-top:24px;padding:14px}.curation-note strong{text-transform:uppercase;letter-spacing:.08em;font-size:9px}.curation-note p{color:var(--muted);margin:6px 0 0;font-size:8px;line-height:1.65}.lesson-shell{border:1px solid var(--line);background:var(--white);box-shadow:var(--shadow)}.lesson-head{border-bottom:1px solid var(--line);background:linear-gradient(110deg, var(--white), var(--mode-tint));justify-content:space-between;align-items:center;gap:24px;min-height:150px;padding:30px clamp(24px,4vw,56px);display:flex}.lesson-head h2{letter-spacing:-.035em;margin:8px 0;font:500 clamp(28px,3.5vw,46px)/1.1 Georgia,Yu Mincho,serif}.lesson-head>div>p:last-child{max-width:720px;color:var(--muted);margin:0;font-size:11px;line-height:1.7}.lesson-total{white-space:nowrap;border:1px solid var(--ink);text-transform:uppercase;letter-spacing:.08em;border-radius:999px;padding:9px 14px;font-size:9px;font-weight:800}.lesson-layout{grid-template-columns:minmax(320px,.95fr) minmax(420px,1.05fr);min-height:660px;display:grid}.lesson-layout.without-document{grid-template-columns:300px minmax(0,1fr)}.document-panel{border-right:1px solid var(--line);background:#f6f3eb;max-height:780px;padding:clamp(24px,3.4vw,48px);overflow-y:auto}.document-label{color:var(--accent-dark);letter-spacing:.16em;margin:0 0 12px;font-size:8px;font-weight:900}.reading-document+.reading-document{border-top:1px solid var(--line);margin-top:32px;padding-top:30px}.reading-document h3{margin:0 0 20px;font:500 27px/1.2 Georgia,serif}.reading-document p:not(.document-label){color:#39423b;font:14px/1.88 Georgia,serif}.skill-brief{background:var(--ink);color:var(--white);padding:24px;position:sticky;top:20px}.skill-brief strong{font:500 25px/1.2 Georgia,serif;display:block}.skill-brief p:last-child{color:#c7cec8;font-size:10px;line-height:1.8}.lesson-question-panel{flex-direction:column;padding:clamp(28px,4.4vw,64px);display:flex}.lesson-question-panel .progress-track{margin-bottom:42px}.lesson-question{margin:0 0 32px;font:500 clamp(21px,2.6vw,34px)/1.45 Georgia,Yu Mincho,serif}.lesson-choices{gap:10px;display:grid}.lesson-choices button{border:1px solid var(--line);background:var(--white);text-align:left;cursor:pointer;grid-template-columns:28px 1fr auto;align-items:center;gap:12px;width:100%;min-height:62px;padding:13px 16px;display:grid}.lesson-choices button:not(:disabled):hover{border-color:var(--ink);background:#faf8f1}.lesson-choices button>span{border:1px solid var(--line);width:26px;height:26px;color:var(--muted);border-radius:50%;place-items:center;font-size:8px;display:grid}.lesson-choices button b{font:500 12px/1.5 inherit}.lesson-choices button em{font-style:normal;font-weight:900}.lesson-choices button.correct{background:var(--mode-tint);border-color:var(--accent-dark)}.lesson-choices button.correct>span{background:var(--accent);border-color:var(--accent);color:var(--ink)}.lesson-choices button.incorrect{border-color:var(--danger);background:#fff1ed}.lesson-choices button.muted{opacity:.42}.lesson-feedback{border-left:4px solid var(--accent-dark);background:var(--mode-tint);margin-top:20px;padding:18px 20px}.lesson-feedback.retry{border-left-color:var(--danger);background:#fff1ed}.lesson-feedback strong{font-size:12px}.lesson-feedback p{color:var(--muted);font-size:10px;line-height:1.7}.lesson-feedback .next-button{float:right;margin-top:-34px}.lesson-complete{text-align:center;margin:auto}.lesson-complete>strong{margin:20px 0;font:500 74px/1 Georgia,serif;display:block}.lesson-complete>strong small{color:var(--muted);font-size:20px}.lesson-complete h3{margin-bottom:24px;font:500 26px/1.3 Georgia,Yu Mincho,serif}.audio-card{text-align:center;position:sticky;top:0}.sound-disc{width:150px;height:150px;color:var(--white);background:repeating-radial-gradient(circle, var(--ink) 0 6px, #263b2d 7px 11px);box-shadow:0 0 0 8px var(--paper-deep), 0 18px 30px #1422182e;border-radius:50%;place-items:center;margin:28px auto;display:grid}.sound-disc.playing{animation:3s linear infinite turn}.sound-disc span{background:var(--accent);width:46px;height:46px;color:var(--ink);border-radius:50%;place-items:center;padding-left:3px;display:grid}@keyframes turn{to{transform:rotate(360deg)}}.audio-card h3{margin:12px 0;font:500 30px/1.2 Georgia,serif}.audio-card>p:not(.document-label,.audio-error){color:var(--muted);font-size:10px;line-height:1.7}.audio-actions{justify-content:center;align-items:center;gap:16px;margin:22px 0;display:flex}.audio-error{color:var(--danger);font-size:9px}.transcript{text-align:left;background:var(--white);border:1px solid var(--line);color:#39423b;max-height:240px;margin-top:20px;padding:18px;font:12px/1.8 Georgia,serif;overflow-y:auto}.writing-switch{background:var(--paper-deep);padding:4px;display:flex}.writing-switch button{cursor:pointer;background:0 0;border:0;padding:12px 17px;font-size:9px;font-weight:800}.writing-switch button.active{background:var(--ink);color:var(--white)}.writing-layout{grid-template-columns:minmax(380px,1fr) minmax(420px,1fr);min-height:720px;display:grid}.writing-prompt{border-right:1px solid var(--line);background:#f6f3eb;max-height:820px;padding:clamp(28px,4vw,54px);overflow-y:auto}.writing-prompt>h3{font:500 18px/1.6 Georgia,Yu Mincho,serif}.source-text{color:#39423b;font:13px/1.88 Georgia,serif}.topic-box{border:1px solid var(--ink);background:var(--white);margin-top:42px;padding:26px}.topic-box small,.point-list>small{color:var(--accent-dark);letter-spacing:.14em;font-size:8px;font-weight:900;display:block}.topic-box strong{margin-top:13px;font:500 28px/1.4 Georgia,serif;display:block}.point-list{flex-wrap:wrap;gap:8px;margin-top:24px;display:flex}.point-list span{background:var(--mode-tint);color:var(--accent-dark);padding:9px 12px;font-size:9px;font-weight:800}.writing-editor{padding:clamp(28px,4vw,54px)}.editor-top{justify-content:space-between;align-items:baseline;display:flex}.editor-top label{text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:900}.editor-top>span{color:var(--muted);font-size:9px}.editor-top>span b{color:var(--danger);font:500 24px/1 Georgia,serif}.editor-top>span.in-range b{color:var(--accent-dark)}.writing-editor textarea{resize:vertical;border:1px solid var(--line);width:100%;height:310px;color:var(--ink);background:#fffefa;outline:none;margin-top:14px;padding:20px;font:15px/1.8 Georgia,serif}.writing-editor textarea:focus{border-color:var(--accent-dark);box-shadow:0 0 0 3px var(--mode-tint)}.range-meter{background:var(--paper-deep);height:4px;margin-top:8px;position:relative}.range-meter span{background:var(--accent-dark);height:100%;transition:width .2s;display:block}.range-meter i{background:var(--ink);width:1px;height:10px;position:absolute;top:-3px}.self-check{grid-template-columns:1fr 1fr;gap:10px;margin-top:24px;display:grid}.self-check>strong{grid-column:1/-1;font-size:10px}.self-check label{color:var(--muted);align-items:flex-start;gap:8px;font-size:9px;line-height:1.5;display:flex}.self-check input{accent-color:var(--accent-dark)}.guide-button{border:1px solid var(--ink);cursor:pointer;background:0 0;width:100%;margin-top:20px;padding:12px;font-size:9px;font-weight:800}.writing-guide{background:var(--mode-tint);border-left:3px solid var(--accent-dark);margin-top:12px;padding:16px}.writing-guide strong{font-size:10px}.writing-guide p{color:var(--muted);margin:6px 0 0;font-size:9px;line-height:1.7}.speaking-layout{grid-template-columns:1.15fr .75fr 1fr;min-height:610px;display:grid}.topic-card,.timer-card,.qa-card{padding:clamp(28px,3.4vw,48px)}.topic-card{border-right:1px solid var(--line);background:#f6f3eb}.topic-card h3{min-height:190px;margin:38px 0 16px;font:500 clamp(27px,3vw,41px)/1.35 Georgia,serif}.topic-card>p:last-child{color:var(--muted);font-size:9px;line-height:1.7}.topic-dots{gap:7px;display:flex}.topic-dots button{background:var(--line);cursor:pointer;border:0;width:28px;height:4px}.topic-dots button.active{background:var(--accent-dark)}.timer-card{border-right:1px solid var(--line);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.timer-card>span{letter-spacing:.18em;color:var(--accent-dark);font-size:8px;font-weight:900}.timer-card>strong{margin:20px 0;font:500 66px/1 Georgia,serif}.timer-card>p{color:var(--muted);font-size:9px}.timer-orbit{border:1px solid var(--line);border-radius:50%;width:120px;height:120px;margin:8px 0 28px;position:relative}.timer-orbit:before,.timer-orbit:after{content:"";border:1px solid var(--line);border-radius:50%;position:absolute;inset:18px}.timer-orbit:after{background:var(--accent);border:0;inset:40px}.timer-orbit i{background:var(--accent-dark);transform-origin:4px 64px;border-radius:50%;width:8px;height:8px;animation:4s linear infinite orbit;position:absolute;top:-4px;left:calc(50% - 4px)}.timer-orbit.idle i,.timer-orbit.complete i{animation-play-state:paused}@keyframes orbit{to{transform:rotate(360deg)}}.qa-card{background:var(--ink);color:var(--white)}.qa-card>div{border-bottom:1px solid #3d4c42;grid-template-columns:26px 1fr;gap:10px;padding:16px 0;display:grid}.qa-card>div span{color:var(--accent);font:800 8px/1 sans-serif}.qa-card>div p{margin:0;font:13px/1.6 Georgia,serif}.qa-card>small{color:#aab5ac;margin-top:20px;font-size:8px;line-height:1.7;display:block}footer{min-height:90px;color:var(--muted);letter-spacing:.04em;justify-content:space-between;align-items:center;font-size:9px;display:flex}footer p:first-child{color:var(--ink);font-weight:800}footer span{color:var(--muted);font-weight:400}@media (max-width:900px){.hero{grid-template-columns:1fr;gap:28px}.mode-panel{max-width:560px}.module-preview{grid-template-columns:repeat(3,1fr)}.module-preview button:nth-child(3){border-right:0}.module-preview button:nth-child(n+4){border-top:1px solid var(--line)}.study-grid{grid-template-columns:1fr}.study-sidebar{border-right:0;border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;gap:24px;display:grid}.side-section+.side-section{border:0;border-left:1px solid var(--line);margin:0;padding:0 0 0 24px}.keyboard-note{display:none}.lesson-layout,.lesson-layout.without-document,.writing-layout{grid-template-columns:1fr}.document-panel,.writing-prompt{border-right:0;border-bottom:1px solid var(--line);max-height:560px}.speaking-layout{grid-template-columns:1fr 1fr}.topic-card{border-bottom:1px solid var(--line)}.timer-card{border-right:0;border-bottom:1px solid var(--line)}.qa-card{grid-column:1/-1}}@media (max-width:620px){.site-header{height:70px}.header-meta .save-status{display:none}.edition-label{padding:6px 8px;font-size:8px}.brand-mark{width:36px;height:36px}.page-wrap{width:min(100% - 24px,1380px)}.hero{padding-top:44px;padding-bottom:36px}.hero h1{font-size:43px}.module-preview{grid-template-columns:1fr 1fr}.module-preview button:nth-child(3){border-right:1px solid var(--line)}.module-preview button:nth-child(2n){border-right:0}.module-preview button:nth-child(n+3){border-top:1px solid var(--line)}.study-sidebar{grid-template-columns:1fr;padding:24px 18px}.side-section+.side-section{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}.quiz-card{min-height:650px;padding:28px 18px}.progress-track{margin-bottom:45px}.question-area h2{font-size:39px}.choice-grid{grid-template-columns:1fr}.feedback{grid-template-columns:34px 1fr}.feedback .next-button{grid-column:1/-1;width:100%;margin-top:4px}.result-actions{flex-direction:column}.lesson-head{flex-direction:column;align-items:flex-start}.lesson-layout{min-height:0}.document-panel{max-height:500px}.lesson-question-panel{min-height:610px}.lesson-feedback .next-button{float:none;width:100%;margin-top:8px}.audio-actions,.writing-switch{width:100%}.audio-actions{flex-direction:column}.writing-switch button{flex:1}.writing-editor textarea{height:350px}.self-check{grid-template-columns:1fr}.self-check>strong{grid-column:1}.speaking-layout{grid-template-columns:1fr}.topic-card,.timer-card{border-right:0}.qa-card{grid-column:auto}footer{flex-direction:column;justify-content:center;align-items:flex-start;gap:8px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}