@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-ease:initial}}}@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;--ease-in:cubic-bezier(.4, 0, 1, 1);--ease-out:cubic-bezier(0, 0, .2, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--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,::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}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.absolute{position:absolute}.fixed{position:fixed}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.inline{display:inline}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.border{border-style:var(--tw-border-style);border-width:1px}.italic{font-style:italic}.underline{text-decoration-line:underline}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.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))}.ease-in{--tw-ease:var(--ease-in);transition-timing-function:var(--ease-in)}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}}:root{--ink:#18332d;--ink-soft:#5d716b;--green:#1f7a5a;--green-dark:#155b43;--mint:#e5f4ec;--mint-soft:#f4faf6;--paper:#fffdf8;--line:#dce6df;--red:#d7554b;--red-soft:#fff0ee;--amber:#d99b45;--shadow:0 24px 80px #2046381f;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace}.auth-page{background:#f4f8f5;place-items:center;min-height:100vh;padding:32px 20px;display:grid}.auth-card{background:#fffdf9;border:1px solid #d8e5dd;border-radius:28px;gap:18px;width:min(100%,460px);padding:44px;display:grid;box-shadow:0 20px 60px #193d301a}.auth-card h1,.auth-card p{margin:0}.auth-card label{color:#345448;gap:8px;font-weight:700;display:grid}.auth-card input{color:#18352b;width:100%;font:inherit;background:#fff;border:1px solid #cbdcd3;border-radius:14px;padding:13px 14px}.auth-card input:focus{border-color:#3f8465;outline:3px solid #3f846533}.auth-brand{color:#fff;background:#3f8465;border-radius:16px;place-items:center;width:52px;height:52px;font-size:28px;font-weight:800;display:grid}.auth-error{color:#b43e3e;font-weight:700}.auth-account-summary{background:#f3f8f4;border:1px solid #cbdcd3;border-radius:16px;align-items:center;gap:13px;padding:14px;display:flex}.auth-account-summary>span{color:#fff;background:#3f8465;border-radius:999px;padding:6px 9px;font-size:11px;font-weight:800}.auth-account-summary>div{gap:2px;display:grid}.auth-account-summary strong{color:#18352b;font-size:15px}.auth-account-summary small{color:#62776f;font:11px var(--font-mono)}.auth-card .primary-button,.auth-card .secondary-button{width:100%}.auth-switch-button{justify-self:center}@media (max-width:560px){.auth-card{border-radius:22px;padding:30px 22px}}.admin-shell{color:#18352b;background:#f4f8f5;min-height:100vh;padding:36px clamp(18px,4vw,64px) 80px}.admin-header,.admin-panel-title,.admin-header-actions,.admin-inline-actions{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.admin-header{max-width:1440px;margin:0 auto 28px}.admin-header h1,.admin-panel h2,.admin-panel h3,.admin-header p{margin:0}.admin-header .admin-account-line{color:#62776f;margin-top:8px;font-size:13px}.admin-header-actions,.admin-inline-actions{justify-content:flex-end}.admin-grid{grid-template-columns:minmax(300px,.8fr) minmax(520px,1.7fr);gap:22px;max-width:1440px;margin:0 auto 22px;display:grid}.admin-panel{box-sizing:border-box;background:#fffdf9;border:1px solid #d8e5dd;border-radius:24px;width:100%;min-width:0;max-width:1440px;margin:0 auto 22px;padding:26px;box-shadow:0 12px 36px #193d3012}.admin-panel>h2{margin-bottom:18px}.admin-message{color:#2f7658;background:#e7f2ec;border-radius:12px;max-width:1440px;margin:0 auto 20px;padding:12px 16px;font-weight:700}.admin-form{grid-template-columns:1fr 1fr;gap:14px;display:grid}.admin-form label,.grant-form label{color:#49665b;gap:7px;font-weight:700;display:grid}.admin-form input,.admin-form textarea,.grant-form input,.grant-form select,.admin-inline-actions input{color:#18352b;min-width:0;font:inherit;background:#fff;border:1px solid #cbdcd3;border-radius:12px;padding:11px 12px}.admin-form-wide{grid-column:1/-1}.admin-table-wrap{width:100%;min-width:0;max-width:100%;overflow-x:auto}.admin-table{border-collapse:collapse;width:100%;font-size:14px}.admin-table th,.admin-table td{text-align:left;vertical-align:middle;border-bottom:1px solid #e4ece7;padding:12px 10px}.admin-table tbody tr{cursor:pointer}.admin-table tbody tr:hover,.admin-table tbody tr.selected{background:#eef6f1}.admin-table small{color:#769085;margin-top:3px;display:block}.grant-form{grid-template-columns:1.5fr 1fr 1.4fr auto;align-items:end;gap:14px;margin:24px 0;display:grid}.admin-row-actions{white-space:nowrap}.admin-row-actions button{color:#2f7658;cursor:pointer;background:0 0;border:0;margin:2px 6px 2px 0;text-decoration:underline}.danger-button{color:#a73333;cursor:pointer;background:#fff;border:1px solid #d66a6a;border-radius:12px;padding:11px 16px;font-weight:700}.activity-grid{grid-template-columns:1fr 1fr;gap:24px;margin-top:20px;display:grid}.activity-item{border-bottom:1px solid #e4ece7;gap:4px;padding:11px 0;display:grid}.activity-item span{color:#6c8179;font-size:14px}@media (max-width:900px){.admin-grid,.activity-grid{grid-template-columns:1fr}.admin-grid>*,.activity-grid>*{min-width:0}.grant-form{grid-template-columns:1fr 1fr}}@media (max-width:560px){.admin-shell{padding:24px 12px 60px}.admin-panel{border-radius:18px;padding:18px}.admin-form,.grant-form{grid-template-columns:1fr}.admin-form-wide{grid-column:auto}}*{box-sizing:border-box}html{background:#eef6f0}body{color:var(--ink);font-family:var(--font-sans);background:radial-gradient(circle at 12% 7%,#c2e5d1b3,#0000 27rem),radial-gradient(circle at 90% 94%,#f7deaf73,#0000 24rem),#f8fbf7;min-width:320px;margin:0}button,input,select,textarea{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #1f7a5a47}.site-shell{min-height:100vh}.topbar,.learning-header{justify-content:space-between;align-items:center;width:min(1180px,100% - 48px);height:88px;margin:0 auto;display:flex}.brand{color:var(--ink);letter-spacing:-.04em;align-items:center;gap:10px;font-size:21px;font-weight:700;text-decoration:none;display:inline-flex}.brand>span:last-child{gap:1px;display:grid}.brand small{color:var(--ink-soft);letter-spacing:.08em;font-size:9px;font-weight:650}.brand-mark{color:#fff;background:var(--green);border-radius:10px 10px 10px 2px;place-items:center;width:34px;height:34px;font-family:Georgia,serif;font-size:20px;display:grid;box-shadow:0 8px 20px #1f7a5a3d}.brand.compact{font-size:18px}.brand.compact .brand-mark{width:30px;height:30px;font-size:17px}.prototype-tag,.eyebrow,.card-kicker,.stage-kicker{letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}.prototype-tag{border:1px solid var(--line);color:var(--ink-soft);background:#ffffff8c;border-radius:999px;padding:7px 11px}.topbar-actions,.learning-header-actions{align-items:center;gap:9px;display:flex}.account-chip{border:1px solid var(--line);background:#ffffffbf;border-radius:13px;align-items:center;gap:9px;margin-right:3px;padding:7px 10px;display:flex}.account-chip>span{color:#fff;background:var(--green);border-radius:999px;padding:4px 7px;font-size:9px;font-weight:800}.account-chip>span.student{background:#59796d}.account-chip>div{gap:1px;display:grid}.account-chip strong{font-size:11px;line-height:1.1}.account-chip small{color:var(--ink-soft);font:9px var(--font-mono)}.account-navigation{border:1px solid var(--line);min-height:36px;color:var(--ink-soft);cursor:pointer;background:#ffffffb8;border-radius:999px;justify-content:center;align-items:center;padding:0 11px;font-size:11px;font-weight:700;text-decoration:none;display:inline-flex}.account-navigation:hover{color:var(--green);background:var(--mint-soft);border-color:#a9cbb9}.settings-button,.history-button,.settings-icon-button,.history-icon-button{border:1px solid var(--line);color:var(--ink-soft);cursor:pointer;background:#ffffffb8;font-weight:650}.settings-button,.history-button{border-radius:999px;min-height:36px;padding:0 12px}.settings-icon-button,.history-icon-button{border-radius:50%;width:42px;height:42px;font-size:17px}.settings-button:hover,.history-button:hover,.settings-icon-button:hover,.history-icon-button:hover{color:var(--green);background:var(--mint-soft);border-color:#a9cbb9}.hero{grid-template-columns:1fr 490px;align-items:center;gap:90px;width:min(1120px,100% - 48px);min-height:calc(100vh - 154px);margin:0 auto;padding:50px 0 80px;display:grid}.eyebrow{color:var(--green)}.hero-copy h1{letter-spacing:-.065em;margin:22px 0 24px;font-family:Georgia,Songti SC,serif;font-size:clamp(52px,6vw,82px);font-weight:500;line-height:1.08}.hero-copy>p{max-width:520px;color:var(--ink-soft);margin:0;font-size:17px;line-height:1.8}.method-line{color:var(--ink-soft);align-items:center;gap:14px;margin-top:42px;font-size:13px;display:flex}.method-line span{white-space:nowrap;align-items:center;gap:7px;display:flex}.method-line b{color:var(--green);font-family:var(--font-mono)}.method-line i{background:var(--line);width:24px;height:1px}.unit-card{box-shadow:var(--shadow);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffdf8eb;border:1px solid #d6e4d9e6;border-radius:28px;padding:34px}.unit-card-head{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.card-kicker{color:var(--green)}.unit-card h2{margin:9px 0 0;font-family:Georgia,Songti SC,serif;font-size:28px;font-weight:500}.word-count{text-align:center;min-width:58px;color:var(--ink-soft);background:var(--mint-soft);border-radius:14px;padding:10px;font-size:12px}.word-count strong{color:var(--green);font-size:22px;line-height:1;display:block}.sample-words{flex-wrap:wrap;gap:7px;margin:24px 0 31px;display:flex}.sample-words span{color:var(--ink-soft);font:12px var(--font-mono);background:#f1f5f1;border-radius:8px;padding:7px 10px}.sample-words span:last-child{color:var(--green);background:var(--mint)}.group-picker{border:0;margin:0 0 26px;padding:0}.group-picker:disabled{opacity:.54}.group-picker legend{color:var(--ink-soft);margin-bottom:12px;font-size:13px;font-weight:600}.group-options{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.group-options label{border:1px solid var(--line);cursor:pointer;border-radius:14px;flex-direction:column;align-items:center;gap:2px;padding:15px 8px;transition:transform .18s,border-color .18s,background .18s;display:flex;position:relative}.group-options label:hover{border-color:#a9cbb9;transform:translateY(-2px)}.group-options label.selected{border-color:var(--green);background:var(--mint)}.group-options input{opacity:0;position:absolute}.group-options strong{font-size:21px}.group-options span{color:var(--ink-soft);font-size:11px}.group-preview{color:var(--green);margin:11px 2px 0;font-size:12px}.unit-plan-summary{color:var(--ink-soft);background:var(--mint-soft);border-radius:14px;justify-content:space-between;align-items:center;gap:14px;margin:0 0 26px;padding:14px 16px;font-size:12px;display:flex}.unit-plan-summary strong{color:var(--green);font-size:13px}.primary-button,.secondary-button,.choice-button,.mark-button,.big-sound-button{cursor:pointer;border:0;transition:transform .18s,background .18s,box-shadow .18s}.primary-button{color:#fff;background:var(--green);border-radius:14px;justify-content:center;align-items:center;gap:18px;min-height:52px;padding:0 24px;font-weight:700;display:inline-flex;box-shadow:0 10px 24px #1f7a5a33}.primary-button:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 14px 30px #1f7a5a45}.primary-button:disabled{cursor:not-allowed;opacity:.35;box-shadow:none;transform:none}.primary-button span{font-size:18px;font-weight:400}.full-button{width:100%}.secondary-button{border:1px solid var(--line);background:#fff;border-radius:14px;justify-content:center;align-items:center;min-height:50px;padding:0 22px;font-weight:650;text-decoration:none;display:inline-flex}.secondary-button:hover{background:var(--mint-soft)}.secondary-button:disabled{cursor:not-allowed;opacity:.4}.text-button{color:var(--ink-soft);cursor:pointer;text-underline-offset:4px;background:0 0;border:0;padding:8px;text-decoration:underline}.saved-panel{grid-template-columns:1fr auto;align-items:center;gap:12px;display:grid}.saved-panel>div{align-items:center;gap:8px;display:flex}.saved-panel p{color:var(--ink-soft);margin:0;font-size:12px}.saved-panel .text-button{grid-column:1/-1;justify-self:center;font-size:12px}.saved-secondary-actions{grid-column:1/-1;justify-content:center}.saved-dot{background:var(--green);width:8px;height:8px;box-shadow:0 0 0 4px var(--mint);border-radius:50%}.home-footer{color:#80918c;justify-content:center;gap:8px;height:66px;font-size:11px;display:flex}.learning-shell{background:#fbfcf9}.learning-header{width:min(1080px,100% - 40px);height:76px}.learning-location{color:var(--ink-soft);align-items:center;gap:12px;font-size:12px;display:flex}.learning-location span{border-right:1px solid var(--line);padding-right:12px}.learning-location strong{color:var(--ink);font-weight:650}.exit-button{border:1px solid var(--line);color:var(--ink-soft);cursor:pointer;background:#fff;border-radius:999px;align-items:center;gap:8px;padding:7px 8px 7px 12px;display:flex}.exit-button span{font:12px var(--font-mono)}.exit-button i{width:28px;height:28px;color:var(--green);background:var(--mint);letter-spacing:1px;border-radius:50%;place-items:center;font-style:normal;font-weight:700;display:grid}.progress-track{background:#e9efea;height:3px}.progress-track span{background:var(--green);height:100%;transition:width .35s;display:block}.learning-stage{place-items:center;min-height:calc(100vh - 79px);padding:36px 24px 70px;display:grid}.transition-screen,.completion-screen{text-align:center;width:min(700px,100%);animation:.38s ease-out both rise-in}.transition-number{width:max-content;color:var(--green);background:var(--mint);letter-spacing:.12em;border-radius:999px;margin:0 auto 22px;padding:8px 12px;font-size:11px;font-weight:700}.transition-screen h1,.completion-screen h1{letter-spacing:-.05em;margin:0;font-family:Georgia,Songti SC,serif;font-size:clamp(36px,5vw,56px);font-weight:500}.transition-screen p,.completion-screen>p{color:var(--ink-soft);margin:17px auto 30px;line-height:1.75}.transition-button{min-width:190px}.practice-wrap{width:min(760px,100%);animation:.28s ease-out both rise-in}.practice-counter{color:var(--ink-soft);justify-content:space-between;align-items:flex-end;margin:0 4px 12px;font-size:12px;display:flex}.practice-counter strong{color:var(--ink);font:18px var(--font-mono)}.practice-counter small{color:var(--ink-soft);font-size:11px;font-weight:400}.word-card{border:1px solid var(--line);background:var(--paper);border-radius:30px;min-height:480px;padding:52px 64px 44px;box-shadow:0 22px 70px #1f3f331a}.step-one-card{text-align:center}.stage-kicker{color:var(--ink-soft);display:block}.word-heading{justify-content:center;align-items:center;gap:14px;margin-top:32px;display:flex}.word-heading h1{letter-spacing:-.045em;margin:0;font-family:Georgia,serif;font-size:clamp(58px,9vw,82px);font-weight:500;line-height:1}.sound-button{background:var(--mint);cursor:pointer;border:0;border-radius:50%;width:42px;height:42px}.phonetic{color:var(--ink-soft);font:16px var(--font-mono);justify-content:center;align-items:center;gap:8px;margin:14px 0 0;display:flex}.phonetic span{color:var(--green);background:var(--mint);font:10px var(--font-sans);border-radius:5px;padding:3px 5px}.definition-panel{background:var(--mint-soft);text-align:left;border-radius:16px;width:min(430px,100%);max-width:100%;margin:31px auto 0;padding:19px 22px;animation:.22s ease-out both reveal;overflow:hidden}.definition-panel div{grid-template-columns:46px minmax(0,1fr);gap:8px;min-width:0;display:grid}.definition-panel div+div{margin-top:8px}.definition-panel span{color:var(--green);font-family:Georgia,serif;font-style:italic}.definition-panel p{overflow-wrap:anywhere;min-width:0;margin:0}.definition-panel .image-definition{text-align:center;display:block}.definition-panel .image-definition>span{display:none}.definition-image{max-width:100%;height:auto;margin:0 auto;display:block}.pronunciation-error{width:min(430px,100%);color:var(--red);text-align:center;margin:12px auto 0;font-size:12px}.step-actions{justify-content:center;gap:14px;min-height:74px;margin-top:42px;display:flex}.choice-button{border-radius:15px;width:180px;height:58px;font-weight:700}.choice-button.known{color:#fff;background:var(--green)}.choice-button.unknown{color:var(--ink);border:1px solid var(--line);background:#fff}.choice-button:hover,.mark-button:hover{transform:translateY(-2px)}.mark-button{border-radius:50%;width:68px;height:68px;font-size:30px}.mark-button.correct,.mark-button.next{color:#fff;background:var(--green)}.mark-button.wrong{color:var(--red);background:var(--red-soft)}.spelling-card{text-align:center}.spelling-topline{justify-content:space-between;align-items:center;gap:16px;min-height:26px;display:flex}.recovery-badge{color:#8a5b16;background:#fff0d7;border-radius:999px;padding:6px 9px;font-size:11px;font-weight:650}.recovery-badge.forced{color:var(--red);background:var(--red-soft)}.big-sound-button{color:var(--green);background:var(--mint);border-radius:999px;margin:48px auto 22px;padding:12px 17px;font-size:13px;font-weight:650}.big-sound-button:hover{transform:translateY(-2px)}.big-sound-button span{margin-right:5px}.spelling-card .spelling-definition-panel{margin:0 auto 34px}.letter-slots{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:5px;min-height:78px;display:flex}.fixed-letter,.letter-slot input{text-align:center;place-items:center;width:42px;height:48px;font:36px/48px Georgia,serif;display:grid}.fixed-letter{padding-top:2px}.letter-slot{flex-direction:column;align-items:center;min-height:73px;display:flex;position:relative}.letter-slot input{color:var(--ink);background:0 0;border:0;border-bottom:2px solid #82948e;border-radius:0;outline:none;padding:0}.letter-slot input:focus{border-bottom-color:var(--green);box-shadow:0 3px #1f7a5a1c}.letter-slot input[aria-invalid=true]{color:var(--red);border-bottom-color:var(--red)}.correct-letter{min-height:18px;color:var(--red);font:14px var(--font-mono);opacity:0;margin-top:3px}.correct-letter.visible{opacity:1}.whole-word-entry{flex-direction:column;justify-content:flex-start;align-items:center;min-height:78px;display:flex}.whole-word-input{width:min(430px,100%);height:52px;color:var(--ink);text-align:center;letter-spacing:.03em;background:0 0;border:0;border-bottom:3px solid #82948e;border-radius:0;outline:none;padding:0 8px;font:34px Georgia,serif}.whole-word-input:focus{border-bottom-color:var(--green);box-shadow:0 3px #1f7a5a1c}.whole-word-input[aria-invalid=true]{color:var(--red);border-bottom-color:var(--red)}.whole-word-correction{min-height:20px;color:var(--red);font:15px var(--font-mono);margin-top:6px}.feedback-line{place-items:center;min-height:43px;margin-top:15px;display:grid}.feedback-line p{color:var(--ink-soft);margin:0;font-size:13px}.feedback-line b{color:#fff;border-radius:50%;place-items:center;width:24px;height:24px;margin-right:6px;display:inline-grid}.feedback-line .success-text{color:var(--green)}.feedback-line .success-text b{background:var(--green)}.feedback-line .error-text{color:var(--red)}.feedback-line .error-text b{background:var(--red)}.answer-button{min-width:180px;margin-top:18px}.test-intro-actions{justify-content:center;gap:12px;display:flex}.unit-test-paper{width:min(960px,100%);padding-bottom:20px;animation:.28s ease-out both rise-in}.test-toolbar{z-index:5;border:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffdf8f0;border-radius:18px;justify-content:space-between;align-items:center;margin-bottom:26px;padding:16px 20px;display:flex;position:sticky;top:12px;box-shadow:0 12px 35px #1f3f331a}.test-toolbar>div{align-items:center;gap:10px;display:flex}.test-toolbar span{color:var(--ink-soft);font-size:12px}.test-toolbar strong{font:19px var(--font-mono)}.test-timer{border-left:1px solid var(--line);padding-left:18px}.test-timer.urgent strong{color:var(--red)}.test-section+.test-section{margin-top:34px}.test-section-heading{align-items:center;gap:13px;margin:0 4px 13px;display:flex}.test-section-heading>span{width:42px;height:42px;color:var(--green);background:var(--mint);font:13px var(--font-mono);border-radius:13px;place-items:center;display:grid}.test-section-heading h2{margin:0;font-family:Georgia,Songti SC,serif;font-size:25px;font-weight:500}.test-section-heading p{color:var(--ink-soft);margin:3px 0 0;font-size:11px}.test-question-list{gap:13px;display:grid}.test-question{border:1px solid var(--line);background:var(--paper);border-radius:21px;margin:0;padding:24px 26px 26px;box-shadow:0 10px 35px #1f3f330f}.test-question legend{color:var(--ink-soft);letter-spacing:.08em;padding:0 7px;font-size:11px;font-weight:700}.test-prompt{color:var(--ink);margin:2px 0 19px;font-size:18px;font-weight:650}.test-prompt.english{font:30px Georgia,serif}.test-audio-button{color:var(--green);background:var(--mint);cursor:pointer;border:0;border-radius:999px;align-items:center;gap:7px;margin:1px 0 19px;padding:10px 14px;font-weight:650;display:inline-flex}.test-choices{grid-template-columns:1fr 1fr;gap:9px;display:grid}.test-choices label{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:13px;align-items:center;gap:11px;min-height:52px;padding:11px 13px;transition:all .16s;display:flex}.test-choices label:hover{border-color:#a9cbb9;transform:translateY(-1px)}.test-choices label.selected{border-color:var(--green);background:var(--mint-soft);box-shadow:inset 0 0 0 1px var(--green)}.test-choices input{opacity:0;position:absolute}.test-choices b{width:27px;height:27px;color:var(--ink-soft);font:12px var(--font-mono);background:#eef3ef;border-radius:8px;flex:none;place-items:center;display:grid}.test-choices label.selected b{color:#fff;background:var(--green)}.test-choices span{line-height:1.45}.test-submit-panel{background:var(--ink);text-align:center;border-radius:22px;margin-top:26px;padding:28px}.test-submit-panel p{color:#dce8e2;margin:0 0 17px;font-size:13px}.test-submit-button{min-width:190px}.test-result-status{color:#fff;background:var(--green);width:max-content;font:14px var(--font-mono);letter-spacing:.12em;border-radius:999px;margin:16px auto 0;padding:7px 13px;display:block}.test-result.fail .completion-mark,.test-result.fail .test-result-status{background:var(--red)}.test-result.fail .completion-mark{box-shadow:0 0 0 13px var(--red-soft)}.test-result .unlock-message{background:var(--mint-soft);border-radius:12px;width:max-content;max-width:100%;padding:11px 15px;font-size:13px}.test-result.fail .unlock-message{color:var(--red);background:var(--red-soft)}.test-result-actions{justify-content:center;gap:10px;display:flex}.best-score{font-size:13px;font-weight:700;color:var(--green)!important;margin-top:-19px!important}.test-review-panel{text-align:left;width:min(650px,100%);margin:22px auto 27px}.test-review-toggle{justify-content:center;width:100%}.test-review-list{gap:11px;margin-top:12px;display:grid}.test-review-item{border:1px solid var(--line);background:#fff;border-radius:15px;padding:18px;box-shadow:0 8px 25px #1f3f330d}.test-review-heading{justify-content:space-between;align-items:center;gap:12px;display:flex}.test-review-heading span{color:var(--red);font:11px var(--font-mono)}.test-review-heading strong{color:var(--ink-soft);font-size:11px}.test-review-prompt{color:var(--ink);margin:12px 0;font-size:16px;font-weight:700;line-height:1.55}.test-review-audio{color:var(--green);background:var(--mint);cursor:pointer;border:0;border-radius:9px;margin:0 0 11px;padding:7px 10px;font-size:11px;font-weight:700}.test-review-answer{border-radius:10px;grid-template-columns:76px minmax(0,1fr);gap:9px;margin-top:7px;padding:9px 11px;line-height:1.5;display:grid}.test-review-answer span{font-size:10px;font-weight:700}.test-review-answer b{overflow-wrap:anywhere;font-size:12px}.test-review-answer.user-answer{color:var(--red);background:var(--red-soft)}.test-review-answer.correct-answer{color:var(--green-dark);background:var(--mint-soft)}.completion-mark{color:#fff;background:var(--green);width:78px;height:78px;box-shadow:0 0 0 13px var(--mint);border-radius:50%;place-items:center;margin:0 auto 25px;font-size:36px;display:grid}.completion-screen .eyebrow{margin-bottom:16px;display:block}.completion-stats{border:1px solid var(--line);background:#fff;border-radius:18px;grid-template-columns:1fr 1fr;width:min(340px,100%);margin:0 auto 30px;display:grid}.completion-stats div{padding:18px}.completion-stats div+div{border-left:1px solid var(--line)}.completion-stats strong{font:27px var(--font-mono);display:block}.completion-stats span{color:var(--ink-soft);font-size:11px}.completion-screen .text-button{margin:10px auto 0;display:block}.dialog-backdrop{z-index:20;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);background:#132a235c;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.dialog-card{background:var(--paper);width:min(440px,100%);box-shadow:var(--shadow);border-radius:24px;padding:35px;animation:.2s ease-out both rise-in;position:relative}.dialog-close{width:34px;height:34px;color:var(--ink-soft);cursor:pointer;background:#eff4f0;border:0;border-radius:50%;font-size:20px;position:absolute;top:18px;right:18px}.dialog-card h2{margin:8px 0 12px;font-family:Georgia,Songti SC,serif;font-size:28px;font-weight:500}.dialog-card>p{color:var(--ink-soft);margin:0;font-size:13px;line-height:1.7}.dialog-progress{background:#e6eee8;border-radius:999px;height:7px;margin:23px 0 11px;overflow:hidden}.dialog-progress span{border-radius:inherit;background:var(--green);height:100%;display:block}.dialog-actions{grid-template-columns:1fr 1fr;gap:10px;margin-top:25px;display:grid}.compact-dialog{padding-top:30px}.settings-dialog{width:min(520px,100%)}.settings-group-picker{border:0;margin:25px 0 0;padding:0}.settings-group-picker legend{color:var(--ink);margin-bottom:11px;font-size:13px;font-weight:700}.settings-step-picker{margin-top:20px}.settings-step-options{grid-template-columns:1fr 1fr;gap:10px;display:grid}.settings-step-options label{border:1px solid var(--line);cursor:pointer;border-radius:14px;flex-direction:column;justify-content:center;gap:5px;min-height:88px;padding:15px 16px;transition:border-color .18s,background .18s;display:flex;position:relative}.settings-step-options label:hover{border-color:#a9cbb9}.settings-step-options label.selected{border-color:var(--green);background:var(--mint)}.settings-step-options input{opacity:0;position:absolute}.settings-step-options input:focus-visible+strong{outline:2px solid var(--green);outline-offset:3px}.settings-step-options strong{color:var(--ink);font-size:15px}.settings-step-options span{color:var(--ink-soft);font-size:11px;line-height:1.5}.settings-note{background:var(--mint-soft);border-radius:11px;padding:11px 13px;color:var(--green)!important;margin-top:15px!important}.settings-save-button{width:100%;margin-top:22px}.history-dialog{width:min(920px,100%);max-height:calc(100vh - 48px);overflow:auto}.history-table-wrap{border:1px solid var(--line);border-radius:15px;margin-top:23px;overflow-x:auto}.history-table{border-collapse:collapse;text-align:left;width:100%;min-width:650px}.history-table th{color:var(--ink-soft);background:var(--mint-soft);letter-spacing:.06em;padding:12px 15px;font-size:11px;font-weight:700}.history-table td{border-top:1px solid var(--line);padding:13px 15px;font-size:13px}.history-table td:nth-child(3),.history-table td:nth-child(4){font-family:var(--font-mono)}.history-table td strong{color:var(--ink);font-size:16px}.history-status{color:#fff;min-width:54px;font:10px var(--font-mono);letter-spacing:.06em;border-radius:999px;justify-content:center;padding:5px 8px;display:inline-flex}.history-status.pass{background:var(--green)}.history-status.fail{background:var(--red)}.history-pagination{grid-template-columns:100px 1fr 100px;align-items:center;gap:14px;margin-top:18px;display:grid}.history-pagination .secondary-button{min-height:40px;padding:0 13px}.history-pagination span{color:var(--ink-soft);text-align:center;font-size:12px}.history-empty{color:var(--ink-soft);background:var(--mint-soft);text-align:center;border:1px dashed #c8d7cc;border-radius:15px;margin-top:23px;padding:38px 20px;font-size:13px}.library-shell{padding-bottom:70px}.library-topbar{border-bottom:1px solid #dce6dfbf;height:auto;min-height:88px;padding-block:12px}.library-topbar .topbar-actions{flex-wrap:wrap;justify-content:flex-end}.library-hero{justify-content:space-between;align-items:end;gap:35px;width:min(1120px,100% - 48px);margin:0 auto;padding:56px 0 34px;display:flex}.library-hero h1{letter-spacing:-.045em;margin:12px 0 13px;font:500 clamp(38px,5vw,61px)/1.08 Georgia,Songti SC,serif}.library-hero p{color:var(--ink-soft);margin:0;line-height:1.7}.dictionary-health{border:1px solid var(--line);color:var(--ink-soft);background:#ffffffbd;border-radius:999px;flex:none;align-items:center;gap:9px;padding:11px 14px;font-size:12px;display:flex}.dictionary-health span{background:var(--amber);border-radius:50%;width:9px;height:9px;box-shadow:0 0 0 4px #d99b451f}.dictionary-health.ready span{background:var(--green);box-shadow:0 0 0 4px #1f7a5a1f}.library-tabs{border-bottom:1px solid var(--line);align-items:center;gap:7px;width:min(1120px,100% - 48px);margin:0 auto 24px;display:flex}.library-tabs button{min-height:48px;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;padding:0 18px;font-weight:700}.library-tabs button.active{color:var(--green);border-bottom-color:var(--green)}.library-tabs .create-book-button{color:#fff;background:var(--green);border:0;border-radius:12px 12px 0 0;margin-left:auto}.library-filters{border:1px solid var(--line);background:#ffffffa6;border-radius:19px;grid-template-columns:1.6fr .8fr .8fr 1fr;gap:12px;width:min(1120px,100% - 48px);margin:24px auto;padding:18px;display:grid}.library-filters label,.create-book-dialog label{color:var(--ink-soft);gap:7px;font-size:11px;font-weight:700;display:grid}.library-filters input,.library-filters select,.create-book-dialog input,.create-book-dialog textarea,.add-word-form input{border:1px solid var(--line);width:100%;min-height:43px;color:var(--ink);background:#fff;border-radius:11px;outline:none;padding:0 12px}.library-filters input:focus,.library-filters select:focus,.create-book-dialog input:focus,.create-book-dialog textarea:focus,.add-word-form input:focus{border-color:var(--green);box-shadow:0 0 0 3px #1f7a5a1a}.library-message{width:min(1120px,100% - 48px);color:var(--green-dark);background:var(--mint);border-radius:13px;justify-content:space-between;gap:15px;margin:0 auto 20px;padding:13px 16px;font-size:13px;display:flex}.library-message button{cursor:pointer;background:0 0;border:0}.library-content{grid-template-columns:minmax(0,1fr);gap:24px;width:min(1120px,100% - 48px);margin:0 auto;display:grid}.library-content:has(.book-detail-panel){grid-template-columns:minmax(0,1fr) minmax(390px,.78fr);align-items:start}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;display:grid}.book-card{border:1px solid var(--line);min-height:220px;color:var(--ink);cursor:pointer;text-align:left;background:#fffdf8e6;border-radius:21px;padding:25px;transition:transform .18s,border-color .18s;box-shadow:0 12px 34px #20463812}.book-card:hover,.book-card.selected{border-color:#94bea9;transform:translateY(-3px)}.book-cover{background:var(--mint-soft) center / contain no-repeat;border-radius:13px;width:100%;height:112px;margin-bottom:16px;display:block}.book-kind{color:var(--green);background:var(--mint);border-radius:999px;padding:5px 8px;font-size:10px;font-weight:800;display:inline-flex}.book-card h2{margin:16px 0 7px;font:500 24px Georgia,Songti SC,serif}.book-card p{color:var(--ink-soft);margin:0;font-size:12px}.book-card>div{gap:8px;margin-top:25px;display:flex}.book-card>div span{color:var(--ink-soft);background:#eff4f0;border-radius:8px;padding:6px 9px;font-size:11px}.book-card small{color:var(--green);margin-top:12px;display:block}.library-pagination{color:var(--ink-soft);grid-column:1/-1;justify-content:center;align-items:center;gap:14px;padding:12px;font-size:12px;display:flex}.library-pagination button{border:1px solid var(--line);color:var(--green);cursor:pointer;background:#fff;border-radius:9px;padding:7px 12px}.library-pagination button:disabled{opacity:.4;cursor:not-allowed}.library-empty{text-align:center;background:#ffffff8c;border:1px dashed #bdd0c3;border-radius:24px;flex-direction:column;grid-column:1/-1;justify-content:center;align-items:center;min-height:360px;padding:45px;display:flex}.library-empty>span{width:58px;height:58px;color:var(--green);background:var(--mint);border-radius:18px;place-items:center;font:25px Georgia,serif;display:grid}.library-empty h2{margin:20px 0 9px;font:500 27px Georgia,Songti SC,serif}.library-empty p{max-width:600px;color:var(--ink-soft);margin:0 0 22px;line-height:1.75}.book-detail-panel{border:1px solid var(--line);background:var(--paper);max-height:calc(100vh - 40px);box-shadow:var(--shadow);border-radius:24px;padding:31px;position:sticky;top:20px;overflow:auto}.book-detail-panel>h2{margin:9px 42px 8px 0;font:500 29px Georgia,Songti SC,serif}.book-detail-panel>p{color:var(--ink-soft);margin:0;font-size:12px}.book-region-list{flex-wrap:wrap;gap:7px;margin-top:14px;display:flex}.book-region-list span{color:var(--green);background:var(--mint);border-radius:8px;padding:5px 8px;font-size:10px}.detail-manage-actions,.unit-manage-actions{flex-wrap:wrap;gap:5px;margin-top:17px;display:flex}.detail-manage-actions button,.unit-manage-actions button{color:var(--ink-soft);cursor:pointer;text-underline-offset:3px;background:0 0;border:0;padding:6px 8px;font-size:11px;text-decoration:underline}.danger-link{color:var(--red)!important}.unit-list{gap:12px;margin-top:23px;display:grid}.unit-row{border:1px solid var(--line);background:#fff;border-radius:17px;padding:19px}.unit-row-head{justify-content:space-between;align-items:start;gap:14px;display:flex}.unit-row-head span{color:var(--green);font:9px var(--font-mono);letter-spacing:.1em}.unit-row-head h3{margin:4px 0 0;font-size:17px}.unit-row-head>strong{color:var(--ink-soft);font-size:10px}.unit-row>p{color:var(--ink-soft);margin:9px 0 0;font-size:11px}.unit-progress{background:#eaf0ec;border-radius:999px;height:5px;margin-top:14px;overflow:hidden}.unit-progress span{border-radius:inherit;background:var(--green);height:100%;display:block}.unit-warning{color:#8a5b18;background:#fff6e7;border-radius:9px;margin-top:11px;padding:9px 10px;font-size:10px;line-height:1.5}.unit-lock{color:#62776f;background:#f0f4f1;border:1px solid #d7dfda;border-radius:10px;margin-top:11px;padding:10px 11px;font-size:11px;font-weight:700}.unit-actions{flex-wrap:wrap;align-items:center;gap:7px;margin-top:15px;display:flex}.unit-actions .primary-button,.unit-actions .secondary-button{border-radius:10px;min-height:39px;padding-inline:14px;font-size:11px}.unit-actions .text-button{font-size:10px}.enrichment-progress{border:1px solid var(--line);background:var(--mint-soft);border-radius:11px;margin-top:12px;padding:12px}.enrichment-progress-head{color:var(--green-dark);justify-content:space-between;align-items:center;gap:12px;font-size:10px;display:flex}.enrichment-progress .unit-progress{background:#fff;margin-top:8px}.enrichment-progress>p{color:var(--ink-soft);margin:8px 0 0;font-size:9px}.enrichment-actions{gap:6px;margin-top:9px;display:flex}.enrichment-actions button{border:1px solid var(--line);color:var(--green);cursor:pointer;background:#fff;border-radius:8px;padding:6px 9px;font-size:9px;font-weight:700}.enrichment-actions button:disabled{opacity:.4;cursor:not-allowed}.add-word-form{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr) auto;gap:7px;margin-top:14px;display:grid}.add-word-form input{min-height:38px;font-size:12px}.add-word-form button{color:#fff;background:var(--green);cursor:pointer;border:0;border-radius:9px;padding:0 11px;font-size:10px;font-weight:700}.add-word-form button:disabled{opacity:.4;cursor:not-allowed}.add-word-feedback{background:var(--mint-soft);border-radius:8px;padding:8px 10px;line-height:1.5;color:var(--green-dark)!important}.unit-word-details{color:var(--ink-soft);margin-top:11px;font-size:10px}.unit-word-details summary{cursor:pointer}.unit-word-details>div{gap:6px;margin-top:9px;display:grid}.unit-word-item{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.unit-word-details span{font-family:var(--font-mono);background:#f0f4f1;border-radius:7px;align-items:center;gap:5px;padding:5px 7px;display:flex}.unit-word-details span.ready{color:var(--green);background:var(--mint)}.unit-word-details span.not_found,.unit-word-details span.error{color:var(--red);background:var(--red-soft)}.unit-word-details i{font-family:var(--font-sans);font-size:8px;font-style:normal}.unit-word-details .word-phonetic{color:var(--ink-soft);font-family:var(--font-mono);font-size:9px;font-weight:500}.meaning-editor{flex:280px;grid-template-columns:minmax(150px,1fr) auto auto;gap:5px;display:grid}.meaning-editor input{border:1px solid var(--line);border-radius:7px;outline:none;min-width:0;min-height:31px;padding:0 8px;font-size:10px}.meaning-editor input:focus{border-color:var(--green);box-shadow:0 0 0 2px #1f7a5a1a}.meaning-editor button{color:#fff;background:var(--green);cursor:pointer;border:0;border-radius:7px;padding:0 9px;font-size:9px;font-weight:700}.meaning-editor button:disabled{opacity:.4;cursor:not-allowed}.meaning-editor .meaning-cancel{border:1px solid var(--line);color:var(--ink-soft);background:#fff}.unit-word-controls{flex-wrap:wrap;gap:5px;display:flex}.unit-word-controls>button{border:1px solid var(--line);color:var(--green);cursor:pointer;background:#fff;border-radius:7px;padding:5px 7px;font-size:9px;font-weight:700}.unit-word-controls>button:disabled{opacity:.4;cursor:not-allowed}.unit-word-delete{color:var(--red);background:var(--red-soft);cursor:pointer;border:1px solid #c54c3f40;border-radius:7px;padding:5px 7px;font-size:9px;font-weight:700}.unit-word-delete:hover{border-color:var(--red)}.unit-word-delete:disabled{opacity:.4;cursor:not-allowed}.unit-empty{border:1px dashed var(--line);color:var(--ink-soft);text-align:center;border-radius:14px;padding:30px 15px;font-size:12px}.create-book-dialog{width:min(610px,100%);max-height:calc(100vh - 48px);overflow:auto}.unit-import-dialog{width:min(620px,100%);max-height:calc(100vh - 48px);overflow:auto}.unit-import-dialog>label{color:var(--ink-soft);gap:7px;margin-top:20px;font-size:11px;font-weight:700;display:grid}.unit-import-dialog textarea{resize:vertical;border:1px solid var(--line);width:100%;min-height:150px;color:var(--ink);font-family:var(--font-mono);background:#fff;border-radius:11px;outline:none;padding:11px 12px;line-height:1.6}.unit-import-dialog textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #1f7a5a1a}.unit-import-dialog .import-divider{margin-top:16px}.parallel-import-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px;display:grid}.parallel-import-fields label{color:var(--ink-soft);gap:7px;font-size:11px;font-weight:700;display:grid}.unit-import-preview-button{width:100%;min-height:42px;margin-top:14px}.unit-import-preview{border:1px solid var(--line);background:#fff;border-radius:12px;margin-top:15px;padding:14px}.unit-import-preview h3{margin:0 0 10px;font-size:13px}.unit-import-counts{grid-template-columns:repeat(4,1fr);gap:7px;display:grid}.unit-import-counts span{color:var(--ink-soft);background:var(--mint-soft);text-align:center;border-radius:8px;padding:9px 7px;font-size:9px}.unit-import-counts b{color:var(--ink);font:15px var(--font-mono);margin-top:3px;display:block}.unit-import-preview p,.unit-import-preview ul{color:var(--ink-soft);font-size:10px;line-height:1.6}.unit-import-preview ul{max-height:120px;padding-left:18px;overflow:auto}.unit-import-preview .primary-button{width:100%;min-height:43px;margin-top:10px}.create-book-dialog form{gap:15px;margin-top:24px;display:grid}.create-book-dialog textarea{resize:vertical;min-height:125px;font-family:var(--font-mono);padding-block:11px;line-height:1.6}.create-book-dialog input:disabled{background:#f0f3f1}@media (max-width:620px){.parallel-import-fields{grid-template-columns:1fr}}.import-divider{text-align:center;color:var(--ink-soft);font-size:10px;position:relative}.import-divider:before{content:"";background:var(--line);height:1px;position:absolute;top:50%;left:0;right:0}.import-divider span{background:var(--paper);padding:0 10px;position:relative}.file-picker{cursor:pointer;border:1px dashed #adc8b6;border-radius:12px;align-items:center;min-height:54px;padding:12px 14px;position:relative;grid-template-columns:1fr auto!important}.file-picker input{opacity:0;height:1px;position:absolute;width:1px!important}.file-picker strong{color:var(--green)}.excel-import-help{border:1px solid var(--line);color:var(--ink-soft);background:var(--mint-soft);border-radius:11px;padding:12px 14px;font-size:10px;line-height:1.65}.excel-import-help strong{color:var(--ink);font-size:11px}.excel-import-help ol{margin:7px 0;padding-left:18px}.excel-import-help p{margin:5px 0 0}.dialog-help{color:var(--ink-soft);margin:-3px 0 0;font-size:10px;line-height:1.6}.form-error{color:var(--red);background:var(--red-soft);border-radius:9px;margin:0;padding:9px 11px;font-size:11px}.loading-shell{width:min(900px,100% - 40px);margin:0 auto;padding-top:28px}.loading-line,.loading-card{background:linear-gradient(90deg,#eef4ef,#f8faf8,#eef4ef) 0 0/200% 100%;border-radius:18px;animation:1.4s infinite shimmer}.loading-line{width:280px;height:54px;margin:140px 0 24px}.loading-card{height:360px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes rise-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes reveal{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{to{background-position:-200% 0}}@media (max-width:900px){.hero{grid-template-columns:1fr;gap:42px;padding-top:45px}.hero-copy{text-align:center}.hero-copy>p{margin-inline:auto}.method-line{justify-content:center}.unit-card{width:min(540px,100%);margin:0 auto}.library-hero{flex-direction:column;align-items:flex-start}.library-filters{grid-template-columns:1fr 1fr}.library-content:has(.book-detail-panel){grid-template-columns:1fr}.book-detail-panel{max-height:none;position:relative;top:0}}@media (max-width:620px){.topbar,.learning-header{width:calc(100% - 28px)}.topbar{height:72px}.library-topbar{flex-direction:column;align-items:flex-start;gap:12px;height:auto;padding-block:14px}.library-topbar .topbar-actions{justify-content:flex-start;width:100%}.account-chip{margin-right:auto}.hero{width:calc(100% - 28px);min-height:auto;padding:42px 0 60px}.hero-copy h1{font-size:47px}.hero-copy>p{font-size:15px}.method-line{gap:7px;font-size:11px}.method-line i{width:9px}.prototype-tag{display:none}.settings-button{padding:0 10px}.history-button{padding:0 9px;font-size:12px}.unit-card{border-radius:22px;padding:25px 20px}.unit-card h2{font-size:23px}.saved-panel{grid-template-columns:1fr}.saved-panel .primary-button{width:100%}.saved-panel .text-button,.saved-secondary-actions{grid-column:1}.unit-plan-summary{flex-direction:column;align-items:flex-start;gap:5px}.learning-header .brand{gap:0;font-size:0}.learning-location{gap:7px}.learning-stage{align-items:start;padding:28px 14px 52px}.transition-screen,.completion-screen{padding-top:75px}.transition-screen h1,.completion-screen h1{font-size:37px}.word-card{border-radius:23px;min-height:455px;padding:38px 20px 30px}.word-heading h1{font-size:57px}.choice-button{width:46%}.spelling-topline{text-align:left;align-items:flex-start}.big-sound-button{margin:39px auto 43px}.fixed-letter,.letter-slot input{width:31px;height:43px;font-size:29px;line-height:43px}.letter-slots{gap:2px}.dialog-card{padding:30px 22px 24px}.settings-step-options,.dialog-actions{grid-template-columns:1fr}.test-intro-actions,.test-result-actions{flex-direction:column;align-items:stretch}.test-intro-actions .transition-button,.test-result-actions .transition-button{width:100%}.test-toolbar{padding:13px 14px;top:6px}.test-toolbar>div{gap:2px;display:grid}.test-question{padding:20px 16px 21px}.test-choices{grid-template-columns:1fr}.test-prompt.english{font-size:27px}.test-review-answer{grid-template-columns:1fr;gap:3px}.history-dialog{padding-inline:16px}.history-pagination{grid-template-columns:1fr 1fr}.history-pagination span{grid-area:1/1/auto/-1}.library-hero,.library-tabs,.library-filters,.library-message,.library-content{width:calc(100% - 28px)}.library-hero{padding-top:38px}.library-hero h1{font-size:39px}.dictionary-health{white-space:normal}.library-tabs{flex-wrap:wrap;align-items:stretch}.library-tabs button{padding-inline:12px}.library-tabs .create-book-button{border-radius:10px;width:100%;margin-left:0}.library-filters,.book-grid{grid-template-columns:1fr}.library-empty{min-height:310px;padding:30px 20px}.book-detail-panel{padding:27px 18px}.unit-actions .primary-button,.unit-actions .secondary-button{flex:1}.add-word-form{grid-template-columns:1fr}.add-word-form button{min-height:38px}.unit-import-counts{grid-template-columns:1fr 1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}