@font-face{font-family:Noto Sans SC;font-style:normal;font-display:swap;font-weight:400;src:url(/_next/static/media/noto-sans-sc-chinese-simplified-400-normal.Ba7eOkfT.woff2)format("woff2"),url(/_next/static/media/noto-sans-sc-chinese-simplified-400-normal.CN8EQoOj.woff)format("woff")}@font-face{font-family:Noto Sans SC;font-style:normal;font-display:swap;font-weight:700;src:url(/_next/static/media/noto-sans-sc-chinese-simplified-700-normal.DoUziBww.woff2)format("woff2"),url(/_next/static/media/noto-sans-sc-chinese-simplified-700-normal.CDPtaw17.woff)format("woff")}@font-face{font-family:Sora Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_next/static/media/sora-latin-ext-wght-normal.CawQDOvP.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Sora Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_next/static/media/sora-latin-wght-normal.DdqRvwsR.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@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{--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial}::backdrop{--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction: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;--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;-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{.visible{visibility:visible}.absolute{position:absolute}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.resize{resize:both}.ordinal{--tw-ordinal:ordinal;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.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{--forest:#173e3b;--forest-2:#245b55;--paper:#f7faf7;--cream:#eef1e9;--yellow:#f3cb55;--orange:#e36a43;--ink:#18302e}*{box-sizing:border-box}html,body{background:var(--cream);min-height:100%;color:var(--ink);margin:0;font-family:Noto Sans SC,sans-serif;overflow-x:clip}button{font:inherit}:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.55}.reader-shell{background:var(--paper);grid-template-columns:68px minmax(0,1fr) 270px;min-height:100svh;display:grid}.app-rail{background:var(--forest);color:#fff;flex-direction:column;align-items:center;gap:12px;padding:18px 8px;display:flex}.app-mark{background:var(--yellow);width:42px;height:42px;color:var(--forest);border-radius:13px;place-items:center;font-weight:900;display:grid}.rail-item{width:48px;min-height:48px;color:inherit;border-radius:14px;place-items:center;font-size:12px;text-decoration:none;display:grid}.rail-item.active{background:#ffffff24}.rail-bottom{margin-top:auto}.library-shell{background:var(--paper);grid-template-columns:68px minmax(0,1fr);min-height:100svh;display:grid}.library-main{min-width:0;padding:clamp(28px,5vw,72px)}.library-heading{margin-bottom:clamp(28px,4vw,48px)}.library-heading p{color:var(--forest-2);margin:0 0 8px;font-size:14px;font-weight:700}.library-heading h1{letter-spacing:-.04em;max-width:12ch;margin:0;font:700 clamp(30px,5vw,52px)/1.12 Sora Variable,sans-serif}.library-alert{color:#74410d;background:#fff1da;border-radius:12px;max-width:680px;margin:0 0 24px;padding:13px 16px}.continue-card{background:var(--forest);color:#fff;border-radius:16px;grid-template-columns:112px minmax(0,1fr) auto;align-items:center;gap:clamp(16px,3vw,28px);max-width:680px;margin-bottom:clamp(32px,5vw,56px);padding:16px;text-decoration:none;display:grid}.continue-card img{background:var(--cream);object-fit:contain;border-radius:10px;width:112px;height:168px;display:block}.continue-copy{gap:7px;display:grid}.continue-copy>span,.continue-copy small{color:#dbe8e2;font-size:13px}.continue-copy strong{font:700 clamp(20px,3vw,28px)/1.15 Sora Variable,sans-serif}.continue-progress{color:var(--yellow);padding-right:4px;font:700 clamp(24px,4vw,38px)/1 Sora Variable,sans-serif}.book-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,164px),1fr));gap:clamp(18px,3vw,32px);display:grid}.book-card{min-width:0;color:var(--ink);gap:11px;font-weight:700;line-height:1.35;text-decoration:none;display:grid}.book-card img{aspect-ratio:2/3;background:var(--cream);object-fit:contain;border-radius:14px;width:100%;display:block}:is(.rail-item:focus-visible,.book-card:focus-visible,.continue-card:focus-visible){outline:3px solid var(--yellow);outline-offset:3px}.rail-item:active,.book-card:active,.continue-card:active{transform:scale(.98)}.reader-main{grid-template-rows:auto minmax(0,1fr) auto auto;min-width:0;padding:17px 20px 16px;display:grid}.reader-heading{justify-content:space-between;align-items:center;display:flex}.reader-heading h1{margin:0;font-family:Sora Variable,sans-serif;font-size:20px}.page-stage{background:#dde4df;border-radius:16px;place-items:center;min-height:0;display:grid;overflow:hidden}.page-stage img{object-fit:contain;width:auto;max-width:100%;height:100%}.caption{text-align:center;padding:12px 8px 8px}.caption p{margin:0;font-size:clamp(18px,2.2vw,26px)}.caption mark{background:var(--yellow);color:inherit;border-radius:6px;padding:2px 5px}.player-preview{align-items:center;gap:12px;min-height:88px;display:flex}.player-preview button{width:52px;height:52px;color:var(--forest);background:#fff;border:1px solid #d5dfdb;border-radius:16px}.player-preview .play-main{background:var(--orange);color:#fff;border:0;border-radius:24px;width:76px;height:76px;font-size:24px}.timeline{background:#dbe3df;border-radius:999px;flex:1;height:7px}.word-drawer{background:#fff;border-left:1px solid #d9e2de;padding:22px 20px}.word-drawer h2{font:700 34px/1 Sora Variable,sans-serif}.word-drawer button{background:var(--forest);color:#fff;border:0;border-radius:17px;width:100%;min-height:56px;margin-top:24px}.player-controls{align-items:center;gap:10px;min-height:92px;display:flex}.player-controls input{min-width:80px;accent-color:var(--orange);flex:1}.touch-button{width:52px;height:52px;color:var(--forest);background:#fff;border:1px solid #d5dfdb;border-radius:16px}.play-button{background:var(--orange);color:#fff;border:0;border-radius:24px;flex:0 0 76px;width:76px;height:76px;font-size:25px}.caption button{color:inherit;font:inherit;background:0 0;border:0;border-radius:6px;padding:2px 4px}.caption button[aria-current=true]{background:var(--yellow)}.caption small{color:var(--forest-2);margin-top:6px;display:block}.page-error{text-align:center;place-items:center;gap:10px;display:grid}.page-error button,[role=alert] button,.pronounce,.save-word{border:0;border-radius:14px;min-height:48px}.pronounce{color:var(--forest);background:#e7efea}.save-word{background:var(--forest);color:#fff}.drawer-close{display:none}.reader-error,.reader-loading{text-align:center;place-content:center;gap:16px;min-height:100svh;padding:24px;display:grid}[role=alert]{color:#9b321f}.reader-error button{background:var(--forest);color:#fff;border:0;border-radius:14px;min-height:48px}:is(.player-controls button:focus-visible,.caption button:focus-visible,.word-drawer button:focus-visible,.reader-error button:focus-visible,.page-error button:focus-visible,.player-controls input:focus-visible){outline:3px solid var(--yellow);outline-offset:3px}.section-shell{background:var(--paper);grid-template-columns:68px minmax(0,1fr);min-height:100svh;display:grid}.section-content{width:min(980px,100%);min-width:0;padding:clamp(28px,5vw,64px)}.section-heading{margin-bottom:24px}.section-heading p{color:var(--forest-2);margin:0 0 8px;font-size:14px;font-weight:700}.section-heading h1{letter-spacing:-.04em;margin:0;font:700 clamp(30px,4vw,48px)/1.1 Sora Variable,sans-serif}.section-alert{color:#74410d;background:#fff1da;border-radius:14px;max-width:680px;margin:0 0 18px;padding:13px 16px}.tabs{gap:8px;margin:24px 0;display:flex}.tabs button,.card-actions button,.reveal-answer{min-height:48px;color:var(--forest);background:#fff;border:1px solid #d5dfdb;border-radius:14px;padding:0 18px}.tabs button[aria-selected=true]{border-color:var(--forest);background:var(--forest);color:#fff}.word-list{gap:14px;display:grid}.vocab-card{background:#fff;border:1px solid #dbe3df;border-radius:20px;gap:18px;padding:20px;display:grid;box-shadow:0 10px 30px #173e3b12}.vocab-card-copy{gap:7px;display:grid}.vocab-card h2,.review-card h2{letter-spacing:-.03em;margin:0;font:700 34px/1 Sora Variable,sans-serif}.vocab-card p,.vocab-card small,.source-list{margin:0}.vocab-card small{color:var(--forest-2)}.source-list{gap:9px;padding:0;list-style:none;display:grid}.source-list li{color:#405955;flex-wrap:wrap;align-items:baseline;gap:10px;display:flex}.source-list a{color:var(--forest);font-weight:700}.card-actions{flex-wrap:wrap;gap:8px;display:flex}.empty-state,.review-complete{text-align:center;background:#fff;border-radius:20px;max-width:680px;margin:0;padding:42px 24px}.review-content{margin:0 auto}.review-card{text-align:center;background:#fff;border-radius:20px;max-width:680px;padding:clamp(24px,5vw,54px);box-shadow:0 20px 70px #173e3b1f}.review-card>small{color:var(--forest-2)}.review-card h2{margin:22px 0}.review-card blockquote{color:#405955;margin:24px 0;font-size:18px;line-height:1.65}.review-answer{color:var(--forest);margin-top:24px;font-size:22px;font-weight:700}.review-answer p{margin:0}.review-actions{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:24px;display:grid}.review-actions button{color:#fff;border:0;border-radius:16px;min-width:0;min-height:64px;font-weight:700}.review-actions button:disabled{cursor:wait;opacity:.65}.review-forgot{background:var(--orange)}.review-remembered{background:var(--forest)}.tabs button:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.card-actions button:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.reveal-answer:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.review-actions button:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.source-list a:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.tabs button:active,.card-actions button:active,.reveal-answer:active,.review-actions button:active{transform:scale(.98)}@media (min-width:721px) and (max-width:900px){.reader-shell{grid-template-columns:56px minmax(0,1fr) 220px}.word-drawer{padding:18px 14px}}@media (max-width:720px){.reader-shell{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:48px minmax(0,1fr)}.app-rail{grid-row:1/-1}.library-shell{grid-template-columns:48px minmax(0,1fr)}.library-main{padding:24px 16px 32px}.continue-card{grid-template-columns:72px minmax(0,1fr);gap:14px;padding:12px}.continue-card img{width:72px;height:108px}.continue-progress{grid-column:2;padding:0}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.word-drawer{background:var(--paper);z-index:10;border:0;border-radius:24px 24px 0 0;grid-column:2;min-width:0;max-height:60svh;padding:16px 20px 20px;display:none;position:fixed;inset:auto 0 0 48px;overflow:auto;box-shadow:0 -20px 50px #173e3b38}.word-drawer.open{display:block}.drawer-close{height:48px;padding:0;display:block;width:48px!important;min-height:48px!important;color:var(--forest)!important;background:0 0!important;margin:0 0 0 auto!important}.reader-main{padding:8px 2px 12px}.player-controls{grid-template-columns:48px 48px 76px 48px 48px;justify-content:center;gap:8px 0;display:grid}.player-controls input{grid-area:1/1/auto/-1;width:100%;min-width:0}.player-controls button{grid-row:2}.player-controls .touch-button:first-of-type{grid-column:1}.player-controls .touch-button:nth-of-type(2){grid-column:2}.player-controls .play-button{grid-column:3}.player-controls .touch-button:nth-of-type(4){grid-column:4}.player-controls .touch-button:nth-of-type(5){grid-column:5}.touch-button{width:48px;height:48px}.section-shell{grid-template-columns:48px minmax(0,1fr)}.section-content{padding:20px 14px}.review-actions{gap:8px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transform:none!important}}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}
