@font-face{font-family:notoSerif;src:url(../media/noto_serif_sc_0-s.2kug-0lb9mq27.woff2)format("woff2");font-display:swap;font-weight:600}@font-face{font-family:notoSerif;src:url(../media/noto_serif_sc_1-s.2kug-0lb9mq27.woff2)format("woff2");font-display:swap;font-weight:700}@font-face{font-family:notoSerif Fallback;src:local(Arial);ascent-override:115.1%;descent-override:28.6%;line-gap-override:0.0%;size-adjust:100.0%}.X1s75q_className{font-family:notoSerif,notoSerif Fallback}.X1s75q_variable{--font-hanzi-subset:"notoSerif", "notoSerif Fallback"}
@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/be-vietnam-pro-0.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/be-vietnam-pro-1.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/be-vietnam-pro-2.woff2)format("woff2");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}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/be-vietnam-pro-3.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/be-vietnam-pro-4.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/be-vietnam-pro-5.woff2)format("woff2");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}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/be-vietnam-pro-6.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/be-vietnam-pro-7.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/be-vietnam-pro-8.woff2)format("woff2");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}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/be-vietnam-pro-9.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/be-vietnam-pro-10.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Be Vietnam Pro;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/be-vietnam-pro-11.woff2)format("woff2");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:block))) 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-outline-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:"Be Vietnam Pro", Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--color-red-700:#bf000f;--color-orange-50:#fff7ed;--color-orange-700:#c53c00;--color-amber-50:#fffbeb;--color-lime-400:#9de500;--color-green-700:#008138;--color-teal-600:#009588;--color-cyan-500:#00b7d7;--color-blue-200:#bedbff;--color-blue-900:#1c398e;--color-gray-50:#f9fafb;--color-gray-100:#f3f4f6;--color-gray-200:#e5e7eb;--color-gray-300:#d1d5dc;--color-gray-400:#99a1af;--color-gray-500:#6a7282;--color-gray-600:#4a5565;--color-gray-700:#364153;--color-gray-800:#1e2939;--color-gray-900:#101828;--color-white:#fff;--ease-in:cubic-bezier(.4, 0, 1, 1);--ease-out:cubic-bezier(0, 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);--radius-control:12px}@supports (color:lab(0% 0 0)){:root,:host{--color-red-700:lab(40.4273% 67.2623 53.7441);--color-orange-50:lab(97.7008% 1.53735 5.90649);--color-orange-700:lab(46.4615% 57.7275 70.8507);--color-amber-50:lab(98.6252% -.635922 8.42309);--color-lime-400:lab(83.7876% -45.0447 88.4738);--color-green-700:lab(47.0329% -47.0239 31.4788);--color-teal-600:lab(55.0223% -41.0774 -3.90277);--color-cyan-500:lab(67.805% -35.3952 -30.2018);--color-blue-200:lab(86.15% -4.04379 -21.0797);--color-blue-900:lab(26.1542% 15.7545 -51.5504);--color-gray-50:lab(98.2596% -.247031 -.706708);--color-gray-100:lab(96.1596% -.0823438 -1.13575);--color-gray-200:lab(91.6229% -.159115 -2.26791);--color-gray-300:lab(85.1236% -.612259 -3.7138);--color-gray-400:lab(65.9269% -.832707 -8.17473);--color-gray-500:lab(47.7841% -.393182 -10.0268);--color-gray-600:lab(35.6337% -1.58697 -10.8425);--color-gray-700:lab(27.1134% -.956401 -12.3224);--color-gray-800:lab(16.1051% -1.18239 -11.7533);--color-gray-900:lab(8.11897% .811279 -12.254)}}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.\@container{container-type:inline-size}.visible{visibility:visible}.absolute{position:absolute}.relative{position:relative}.static{position:static}.sticky{position:sticky}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.list-item{display:list-item}.table{display:table}.flex-shrink,.shrink{flex-shrink:1}.grow{flex-grow:1}.border-collapse{border-collapse:collapse}.transform{transform:var(--tw-rotate-x, ) var(--tw-rotate-y, ) var(--tw-rotate-z, ) var(--tw-skew-x, ) var(--tw-skew-y, )}.flex-wrap{flex-wrap:wrap}.border{border-style:var(--tw-border-style);border-width:1px}.underline{text-decoration-line:underline}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.invert{--tw-invert:invert(100%);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-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}.\[xml\:lang\]{xml:lang}}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--navy:#00288e;--blue:#1e40af;--teal:#006a61;--red:#700006;--paper:#faf8ff;--ink:#131b2e;--muted:#5f6170;--line:#dce2f1;--pale:#edf0ff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Be Vietnam Pro,Arial,sans-serif}h1,h2,h3,p{margin-top:0}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default}::selection{color:#001453;background:#cad2ff}.site-container{width:min(100% - 3rem,1180px);margin-inline:auto}.site-header{z-index:5;border-bottom:1px solid var(--line);background:#faf8fff7;position:relative}.header-inner{align-items:center;gap:2rem;min-height:78px;display:flex}.brand{flex:none;align-items:center;gap:.7rem;min-height:48px;display:inline-flex}.brand-mark{background:var(--navy);color:#fff;width:44px;height:44px;font:700 1.65rem var(--font-hanzi-subset),"Noto Serif SC",KaiTi,serif;border-radius:12px;place-items:center;display:grid;box-shadow:0 8px 20px #00288e25}.brand-mark svg{width:32px;height:32px;display:block}.brand-copy{flex-direction:column;gap:2px;display:flex}.brand-copy strong{color:var(--navy);letter-spacing:-.02em;font-size:.96rem}.brand-copy small{color:var(--muted);font-size:.65rem;font-weight:600}.desktop-nav{align-items:center;gap:1.6rem;margin-left:auto;display:flex}.desktop-nav a{color:#444653;align-items:center;min-height:44px;font-size:.84rem;font-weight:700;display:inline-flex}.header-badge,.date-pill{color:#005049;white-space:nowrap;background:#e6f7f3;border-radius:999px;padding:.55rem .85rem;font-size:.75rem;font-weight:800}.site-footer{background:var(--navy);color:#fff;border-top:4px solid var(--blue);margin-top:5rem}.footer-main{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:2rem clamp(1.5rem,3vw,3rem);padding-block:3.4rem 3rem;display:grid}.footer-column{min-width:0}.footer-column h2{color:#fff;margin:0 0 .9rem;font-size:1rem;font-weight:800;line-height:1.4}.footer-brand .brand{align-items:center}.site-footer .brand-mark{color:var(--navy);background:#fff;box-shadow:0 8px 20px #00164a40}.site-footer .brand-copy strong{color:#fff;font-size:1rem}.site-footer .brand-copy small,.footer-brand-subtitle{color:#dbe4ff;font-size:.75rem}.footer-brand-description{color:#dbe4ff;max-width:280px;margin:1rem 0 0;font-size:.8rem;line-height:1.8}.footer-link-list{gap:.1rem;display:grid}.footer-link-list a{color:#e9edff;border-radius:8px;align-items:center;min-height:44px;margin-inline:-.45rem;padding-inline:.45rem;font-size:.82rem;line-height:1.5;display:flex}.footer-contact-list{gap:.4rem;display:grid}.footer-contact-row{color:#fff;border-radius:12px;align-items:center;gap:.65rem;min-height:52px;margin-inline:-.4rem;padding:.3rem .4rem;font-size:.82rem;line-height:1.4;display:flex}.footer-contact-icon{background:var(--blue);color:#fff;border-radius:10px;flex:none;place-items:center;width:38px;height:38px;display:grid}.footer-contact-copy{overflow-wrap:anywhere;gap:.05rem;min-width:0;display:grid}.footer-contact-copy small{color:#c9d8ff;letter-spacing:.08em;text-transform:uppercase;font-size:.64rem;font-weight:800}.footer-bottom-wrap{border-top:1px solid #5576c6}.footer-bottom{color:#dbe4ff;justify-content:space-between;align-items:center;gap:1rem 2rem;padding-block:1.2rem;font-size:.72rem;line-height:1.7;display:flex}.mobile-nav{display:none}.kicker{color:var(--teal);letter-spacing:.12em;font-size:.72rem;font-weight:800;display:inline-block}.badge{min-height:26px;color:var(--navy);background:#e9edff;border-radius:999px;align-items:center;padding:.3rem .68rem;font-size:.68rem;font-weight:800;line-height:1.25;display:inline-flex}.badge-draft{color:#81400b;background:#fff0e5}.panel,.word-display{background:#fff;border:1px solid #e0e5f3;border-radius:16px;box-shadow:0 8px 26px #172d6409}.panel{padding:clamp(1.25rem,2.3vw,2rem)}.panel h2{color:var(--navy);letter-spacing:-.035em;margin:.65rem 0;font-size:clamp(1.15rem,2vw,1.55rem);line-height:1.35}.panel p,.page-heading p{color:var(--muted);font-size:.86rem;line-height:1.8}.button{text-align:center;border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:.5rem;min-height:48px;padding:.75rem 1.2rem;font-size:.85rem;font-weight:800;display:inline-flex}.button-primary{background:var(--navy);color:#fff;box-shadow:0 8px 20px #00288e24}.button-subtle{color:var(--navy);background:#e9edff}.button-outline{color:var(--navy);background:#fff;border-color:#aebde7}.back-link,.text-link{min-height:44px;color:var(--teal);align-items:center;font-size:.8rem;font-weight:800;display:inline-flex}.empty-state{color:var(--muted);background:#f7f9ff;border:1px dashed #bdc9e4;border-radius:12px;padding:1.15rem;font-size:.8rem;line-height:1.7}.section-title{color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;font-size:.72rem;font-weight:700;display:flex}.progress-track,.study-progress{background:#e5e9f6;border-radius:999px;height:10px;overflow:hidden}.progress-track>span,.study-progress>span{border-radius:inherit;background:linear-gradient(90deg,var(--teal),#53c6b4);height:100%;display:block}.level-selector,.filter-row{flex-wrap:wrap;gap:.5rem;margin-top:1.2rem;display:flex}.level-selector button,.filter-row button{cursor:pointer;border:1px solid #0000;border-radius:999px;min-height:44px;padding:.6rem .9rem;font-size:.75rem;font-weight:800}.level-active{color:#fff;background:var(--navy)}.level-option{color:var(--navy);background:#eef0f6}.level-option:disabled{color:#555e73;cursor:not-allowed}.level-option b{margin-left:.3rem;font-size:.65rem}.level-selector button:hover:not(:disabled),.filter-row button:hover:not(:disabled){border-color:var(--teal)}.level-selector button:active:not(:disabled),.filter-row button:active:not(:disabled){transform:translateY(1px)}.page-heading,.welcome-row{justify-content:space-between;align-items:flex-start;gap:2rem;margin-bottom:2rem;display:flex}.page-heading h1,.welcome-row h1{color:var(--navy);letter-spacing:-.055em;margin:.65rem 0;font-size:clamp(2rem,4vw,3.25rem);font-weight:800;line-height:1.2}.page-heading p,.welcome-row p{margin:0}.dashboard-page,.learning-page,.library-page,.detail-page,.progress-page{min-height:62vh;padding-block:2.8rem 1rem}.dashboard-grid{grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:1.25rem;display:grid}.dashboard-main,.dashboard-side{align-content:start;gap:1.25rem;display:grid}.lesson-panel{background:linear-gradient(135deg,#fff 50%,#edf4ff);border-color:#cbd7f2}.lesson-panel>p{max-width:620px}.lesson-numbers{grid-template-columns:repeat(3,1fr);gap:.7rem;margin:1.6rem 0;display:grid}.lesson-numbers>div{background:#f1f4ff;border-radius:12px;padding:.85rem}.lesson-numbers strong{color:var(--navy);font-size:1.6rem;line-height:1.3;display:block}.lesson-numbers span{color:var(--muted);font-size:.69rem;font-weight:700}.dashboard-main .progress-track{margin:1.3rem 0 .75rem}.home-links{grid-template-columns:1fr 1fr;gap:1.25rem;margin-top:1.25rem;display:grid}.home-links a{min-height:70px;color:var(--navy);background:#e8edff;border-radius:16px;justify-content:space-between;align-items:center;padding:1rem 1.4rem;font-size:.85rem;font-weight:800;display:flex}.daily-panel .word-display{box-shadow:none;border:0;border-radius:0;margin:1rem 0 0;padding:0}.daily-panel .text-link{margin-top:.5rem}.community-panel .empty-state{margin-top:1rem}.word-display{flex-direction:column;align-items:flex-start;padding:1.3rem;display:flex}.word-top{flex-wrap:wrap;gap:.4rem;display:flex}.hanzi-link{margin:.8rem 0 .25rem;display:block}.hanzi,.study-hanzi,.quiz-hanzi{color:var(--navy);font-family:var(--font-hanzi-subset),"Noto Serif SC","Microsoft YaHei",serif;font-weight:700}.hanzi{font-size:clamp(3.1rem,5vw,4.7rem);line-height:1.25}.word-reading{color:var(--teal);align-items:center;gap:.6rem;font-size:1rem;font-weight:700;display:flex}.word-meaning{color:var(--ink);margin:.6rem 0;font-size:.9rem}.word-note{color:var(--muted);margin:.25rem 0 .75rem;font-size:.78rem;line-height:1.6}.speech-wrap{flex-wrap:wrap;align-items:center;gap:.3rem;display:inline-flex}.icon-button{color:#005049;background:#e7f7f3;border:1px solid #c6d7d4;border-radius:12px;place-items:center;width:44px;height:44px;font-size:.76rem;font-weight:800;display:grid}.speech-button svg{width:20px;height:20px}.speech-button[aria-pressed=true]{background:#d0eee8;border-color:#7dafaa}.speech-status{color:var(--teal);font-size:.7rem;font-weight:700}.speech-error{color:#8a251f;max-width:240px;font-size:.7rem}.example{border-top:1px solid var(--line);width:100%;margin-top:.55rem;padding-top:1rem}.example-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;display:flex}.example-heading>span{color:var(--teal);letter-spacing:.1em;font-size:.68rem;font-weight:800}.example p{color:var(--muted);margin:.3rem 0;font-size:.84rem;line-height:1.65}.example .example-hanzi{font-family:var(--font-hanzi-subset),"Microsoft YaHei",serif;color:var(--ink);font-size:1.15rem}.word-compact .hanzi{font-size:3.3rem}.lesson-intro{text-align:center;max-width:690px;margin-inline:auto;padding:3rem}.lesson-intro .button{margin-top:1rem}.study-shell{max-width:760px;margin-inline:auto}.study-meta{color:var(--teal);justify-content:space-between;gap:1rem;margin-bottom:.7rem;font-size:.75rem;font-weight:800;display:flex}.study-progress{height:8px;margin-bottom:1.2rem}.study-card,.quiz-panel{background:#fff;border:1px solid #dce3f2;border-radius:20px;min-height:400px;padding:clamp(1.4rem,4vw,2.5rem);box-shadow:0 16px 40px #1b368414}.study-card{text-align:center;flex-direction:column;align-items:center;gap:.7rem;display:flex}.study-hanzi{margin:.7rem 0 0;font-size:clamp(5rem,12vw,8rem);line-height:1.2}.study-pronunciation{color:var(--teal);align-items:center;gap:.5rem;font-size:1.2rem;font-weight:700;display:flex}.card-answer{border-top:1px solid var(--line);width:100%;padding-top:1rem}.card-answer strong{color:var(--navy);font-size:1.2rem}.card-answer p{margin:.5rem 0;font-size:.9rem}.card-answer small{color:var(--teal)}.study-actions,.result-actions{flex-wrap:wrap;justify-content:center;gap:.8rem;margin-top:1.2rem;display:flex}.help-text{text-align:center;color:var(--muted);margin:1rem 0 0;font-size:.73rem;line-height:1.6}.quiz-panel h2{color:var(--navy);margin:.6rem 0 1rem;font-size:1.45rem}.quiz-hanzi{text-align:center;margin:.5rem 0 1.4rem;font-size:5.5rem;display:block}.quiz-options{grid-template-columns:1fr 1fr;gap:.75rem;display:grid}.quiz-option{min-height:66px;color:var(--ink);text-align:left;background:#f9faff;border:1px solid #cbd4ec;border-radius:12px;justify-content:space-between;align-items:center;gap:.5rem;padding:.8rem 1rem;font-size:.9rem;font-weight:700;display:flex}.quiz-option.correct{color:#005049;background:#e0f7ef;border-color:#00816e}.quiz-option.incorrect{color:#8e1e1e;background:#fff0ef;border-color:#b43636}.listening-prompt{flex-wrap:wrap;justify-content:center;align-items:center;gap:.7rem;min-height:100px;display:flex}.listening-prompt .icon-button{border-radius:50%;width:68px;height:68px;font-size:1rem}.listening-prompt .text-link{background:0 0;border:0;text-decoration:underline}.quiz-feedback{background:#eef4ff;border-radius:12px;flex-wrap:wrap;align-items:center;gap:.8rem;margin-top:1.2rem;padding:1rem;font-size:.8rem;display:flex}.quiz-feedback strong{color:var(--navy)}.quiz-feedback span{color:var(--muted)}.quiz-feedback .button{margin-left:auto}.result-panel{text-align:center;max-width:690px;margin-inline:auto;padding:3rem}.result-symbol{color:#006a61;background:#dcf8ee;border-radius:50%;place-items:center;width:70px;height:70px;margin:0 auto 1rem;font-size:2rem;display:grid}.result-score strong{color:var(--navy);font-size:4rem}.result-score span{color:var(--muted)}.library-controls label{color:var(--navy);margin-bottom:.6rem;font-size:.85rem;font-weight:800;display:block}.library-controls input{width:100%;min-height:52px;color:var(--ink);background:#fff;border:1px solid #bdc9e4;border-radius:12px;padding:.75rem 1rem}.topic-list{flex-wrap:wrap;gap:.5rem;margin-top:1rem;display:flex}.topic-list button{min-height:44px;color:var(--navy);background:#fff;border:1px solid #c9d2e9;border-radius:999px;padding:.5rem .9rem;font-size:.75rem;font-weight:700}.topic-list button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}.library-count{color:var(--muted);margin:1.5rem 0 1rem;font-size:.8rem;font-weight:700}.library-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;display:grid}.detail-page .back-link{margin-bottom:1.2rem}.detail-grid{grid-template-columns:minmax(0,1.3fr) minmax(280px,.8fr);align-items:start;gap:1.25rem;display:grid}.detail-grid>div{gap:1.25rem;display:grid}.related-list{gap:.5rem;display:grid}.related-list a{border-bottom:1px solid var(--line);min-height:60px;color:var(--muted);grid-template-columns:70px 1fr 1fr 20px;align-items:center;gap:.7rem;font-size:.77rem;display:grid}.related-list a:last-child{border:0}.hanzi-small{font-family:var(--font-hanzi-subset),"Microsoft YaHei",serif;color:var(--navy);font-size:1.5rem}.detail-community .empty-state{margin:1rem 0 2rem}.metric-grid{grid-template-columns:repeat(4,1fr);gap:1rem;display:grid}.metric-card{flex-direction:column;min-height:160px;display:flex}.metric-card>span{color:var(--teal);letter-spacing:.08em;font-size:.67rem;font-weight:800}.metric-card strong{color:var(--navy);font-size:2.5rem;line-height:1.5}.metric-card small{color:var(--muted);font-size:.75rem}.progress-grid{grid-template-columns:1fr 1fr;gap:1rem;margin-top:1rem;display:grid}.progress-grid .progress-track{margin:1.2rem 0 1rem}.level-progress-list{gap:1rem;margin-top:1.25rem;display:grid}.level-progress-list>div{border-top:1px solid var(--line);padding-top:1rem}.level-progress-list .progress-track{margin:.6rem 0 .3rem}.level-progress-list p{color:var(--muted);margin:0;font-size:.75rem}.leitner-list{gap:.7rem;margin-top:1rem;display:grid}.leitner-list>div{color:var(--muted);grid-template-columns:55px 1fr 25px;align-items:center;gap:.6rem;font-size:.72rem;display:grid}.leitner-list>div>div{background:#e8ecf6;border-radius:999px;height:8px;overflow:hidden}.leitner-list>div>div>span{border-radius:inherit;background:var(--teal);height:100%;display:block}.backup-panel{margin-top:1rem}.backup-actions{flex-wrap:wrap;align-items:flex-start;gap:1rem;display:flex}.backup-actions label{color:var(--navy);margin-bottom:.3rem;font-size:.75rem;font-weight:800;display:block}.backup-actions input{max-width:100%;font-size:.78rem}.visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.backup-actions .file-picker{cursor:pointer;align-items:center;font-size:.8rem;display:inline-flex}.file-picker:has(+input:focus-visible){outline-offset:3px;outline:3px solid #008c7b}.file-name{margin:.4rem 0 0!important;font-size:.72rem!important}.field-error,.field-success{margin:.4rem 0 0!important;font-size:.75rem!important}.field-error{color:#9b000d!important}.field-success{color:#005e51!important}.info-page{min-height:65vh;padding-block:2.5rem 4rem}.info-header{max-width:800px;margin:1.5rem 0}.info-header h1{color:var(--navy);margin:.6rem 0;font-size:clamp(2rem,4vw,3.5rem)}.info-header p{color:var(--muted);line-height:1.8}.info-content{border:1px solid var(--line);background:#fff;border-radius:16px;max-width:850px;padding:clamp(1.4rem,4vw,3rem)}.info-content section+section{border-top:1px solid var(--line);margin-top:1.7rem;padding-top:1.7rem}.info-content h2{color:var(--navy);font-size:1.2rem}.info-content p{color:var(--muted);font-size:.87rem;line-height:1.85}.info-content a{color:var(--teal);text-underline-offset:3px;text-decoration:underline}a,button,input,textarea,select{transition:color .18s,background-color .18s,border-color .18s,box-shadow .18s,transform .18s}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline-offset:3px;outline:3px solid #008c7b}.desktop-nav a:hover,.back-link:hover,.text-link:hover{color:var(--blue)}.button-primary:hover:not(:disabled){background:#1e40af;transform:translateY(-1px);box-shadow:0 12px 26px #00288e31}.button-primary:active:not(:disabled){background:#001c68;transform:translateY(0)}.button-subtle:hover:not(:disabled),.home-links a:hover{background:#dbe4ff}.button-outline:hover:not(:disabled),.quiz-option:hover:not(:disabled){background:#edf2ff;border-color:#8fa7df}.topic-list button:hover{border-color:var(--navy)}@media (max-width:900px){.dashboard-grid,.detail-grid{grid-template-columns:1fr}.dashboard-side{grid-template-columns:1fr 1fr}.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.desktop-nav{gap:.7rem}.header-inner{gap:1rem}}@media (max-width:700px){.site-container{width:min(100% - 2rem,560px)}.header-inner{min-height:68px}.desktop-nav,.header-badge{display:none}.mobile-nav{z-index:10;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid #d9e0ef;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 26px #172d6410}.mobile-nav a{color:#5f6170;flex-direction:column;justify-content:center;align-items:center;gap:1px;min-height:62px;display:flex}.mobile-nav a[aria-current=page]{color:var(--navy);background:#eef2ff}.mobile-nav a span{font-size:1.35rem;line-height:1.2}.mobile-nav a small{font-size:.65rem;font-weight:800}.site-footer{margin-top:3rem;margin-bottom:62px}.footer-main{flex-direction:column;gap:1.5rem}.footer-bottom{flex-direction:column;gap:.2rem}.dashboard-page,.learning-page,.library-page,.detail-page,.progress-page{padding-top:2rem}.page-heading,.welcome-row{display:block}.page-heading .button,.page-heading .back-link,.welcome-row .date-pill{margin-top:1rem}.dashboard-side,.home-links,.progress-grid{grid-template-columns:1fr}.metric-grid{grid-template-columns:1fr 1fr}.study-card,.quiz-panel{min-height:0}.quiz-feedback .button{margin-left:0}.info-page{padding-block:1.5rem 3rem}}@media (max-width:420px){.library-grid{grid-template-columns:1fr 1fr;gap:.65rem}.library-grid .word-display{padding:.9rem}.library-grid .hanzi{font-size:2.8rem}.library-grid .badge{font-size:.58rem}.library-grid .word-meaning{font-size:.78rem}.lesson-numbers{gap:.35rem}.lesson-numbers>div{padding:.55rem}.lesson-numbers strong{font-size:1.3rem}.lesson-numbers span{font-size:.6rem}.quiz-options{grid-template-columns:1fr}.metric-card{min-height:130px;padding:1rem}.metric-card strong{font-size:2rem}.result-panel,.lesson-intro{padding:1.5rem}.related-list a{grid-template-columns:55px 1fr 1fr 14px;gap:.25rem;font-size:.65rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.word-community{gap:1.5rem;display:grid}.community-section{min-width:0}.community-section .section-title{margin-bottom:.75rem}.entry-list{gap:.7rem;display:grid}.community-entry{border:1px solid var(--line);border-radius:var(--radius-control);background:#fff;min-width:0;padding:1rem}.community-entry p,.thread-question p{color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere;margin:.7rem 0;font-size:.84rem;line-height:1.75}.entry-meta,.entry-actions{color:var(--muted);flex-wrap:wrap;align-items:center;gap:.7rem;font-size:.73rem;display:flex}.entry-meta strong{color:var(--navy)}.entry-actions{justify-content:space-between;margin-top:.8rem}.like-button,.report-link{min-height:44px;color:var(--navy);background:#e9edff;border:0;border-radius:10px;align-items:center;padding:.4rem .65rem;font-size:.73rem;font-weight:800;display:inline-flex}.like-button[aria-pressed=true]{color:#005049;background:#e6f7f3}.report-link{color:var(--muted);text-underline-offset:3px;background:0 0;text-decoration:underline}.report-control{min-width:0}.report-form{gap:.5rem;min-width:min(100%,250px);margin-top:.5rem;display:grid}.report-form label{color:var(--navy);gap:.3rem;font-size:.72rem;font-weight:700;display:grid}.report-form select,.report-form textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #bdc9e4;border-radius:10px;padding:.6rem}.report-form select{min-height:44px}.community-compose{box-shadow:none;margin-top:1rem;padding:1.1rem}.community-compose-toggle{display:none}.community-form{gap:.55rem;display:grid}.community-form-title{color:var(--navy);margin:0 0 .3rem;font-size:1.1rem}.community-form label{color:var(--navy);font-size:.78rem;font-weight:800}.community-form input,.community-form textarea,.community-form select{width:100%;min-height:44px;color:var(--ink);background:#fff;border:1px solid #bdc9e4;border-radius:10px;padding:.65rem .8rem}.community-form input.visually-hidden,.report-form input.visually-hidden{border:0;width:1px;height:1px;min-height:0;padding:0}.community-form textarea{resize:vertical}.community-form .button{justify-self:start;margin-top:.3rem}.community-form .help-text{text-align:left;margin:.2rem 0}.community-form .help-text a{color:var(--teal);text-decoration:underline}.form-message{color:#005e51;margin:.4rem 0;font-size:.78rem;line-height:1.5}.qa-page{min-height:65vh;padding-block:2.8rem 1rem}.qa-page>.back-link{margin-bottom:1rem}.qa-grid,.thread-grid{grid-template-columns:minmax(0,1.5fr) minmax(290px,.85fr);align-items:start;gap:1.25rem;display:grid}.qa-list,.qa-sidebar,.thread-grid>div{align-content:start;gap:1rem;min-width:0;display:grid}.qa-filters{margin-top:.7rem}.qa-search{gap:.5rem;margin-top:1rem;display:flex}.qa-search input{min-width:0;color:var(--ink);font:inherit;background:#fff;border:1px solid #bdc9e4;border-radius:12px;flex:1;padding:.7rem .85rem}.question-list,.thread-answers{gap:1rem;display:grid}.question-card h2{color:var(--navy);margin:.8rem 0 .5rem;font-size:1.22rem;line-height:1.4}.question-card p{color:var(--muted);-webkit-line-clamp:3;white-space:pre-wrap;overflow-wrap:anywhere;-webkit-box-orient:vertical;margin:0;font-size:.84rem;line-height:1.7;display:-webkit-box;overflow:hidden}.question-card .entry-actions{margin-top:1rem}.qa-pagination{color:var(--muted);justify-content:center;align-items:center;gap:.7rem;font-size:.75rem;display:flex}.thread-question h1{color:var(--navy);overflow-wrap:anywhere;margin:.9rem 0;font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.3}.thread-answers{margin-top:1.5rem}.thread-answers h2{color:var(--navy);margin:0;font-size:1.25rem}.qa-sidebar .panel h2{color:var(--navy)}.qa-sidebar .panel p{color:var(--muted);font-size:.8rem;line-height:1.75}.home-links{grid-template-columns:repeat(3,1fr)}.community-panel .word-community{margin-top:1rem}.community-panel .community-entry{padding:.75rem}.community-panel .community-section+.community-section{border-top:1px solid var(--line);padding-top:1rem}@media (max-width:900px){.qa-grid,.thread-grid{grid-template-columns:1fr}.qa-sidebar{grid-template-columns:1fr 1fr}}@media (max-width:700px){.qa-page{padding-top:2rem}.qa-sidebar,.home-links{grid-template-columns:1fr}.mobile-nav{grid-template-columns:repeat(5,1fr)}.mobile-nav a small{font-size:.59rem}.community-compose-toggle{width:100%;min-height:44px;color:var(--navy);text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;font-size:.9rem;font-weight:800;display:flex}.community-form{margin-top:.8rem;display:none}.community-form.is-open{display:grid}.community-form-title{display:none}}.state-page{place-items:center;min-height:65vh;padding-block:3rem;display:grid}.state-panel{text-align:center;width:min(100%,640px);padding:clamp(1.5rem,5vw,3rem)}.state-symbol{background:var(--navy);color:#fff;border-radius:20px;place-items:center;width:72px;height:72px;margin:0 auto 1.25rem;font-size:2.4rem;font-weight:800;display:grid}.state-panel h1{color:var(--navy);margin:.6rem 0;font-size:clamp(1.8rem,4vw,2.8rem)}.state-panel p{color:var(--muted);font-size:.9rem;line-height:1.8}.state-actions{flex-wrap:wrap;justify-content:center;gap:.75rem;margin-top:1.5rem;display:flex}.button:disabled,.quiz-option:disabled,.like-button:disabled{opacity:.62;cursor:not-allowed;box-shadow:none;transform:none}.like-button:hover:not(:disabled){background:#dbe4ff}.like-button:active:not(:disabled){background:#d0ddff}.report-link:hover,.report-link:active{color:var(--navy);background:#eef2ff}.info-content a:focus-visible,.community-form .help-text a:focus-visible{border-radius:2px;text-decoration-thickness:2px}.question-card h2 a{align-items:center;min-height:44px;display:flex}.question-card h2 a:hover{color:var(--teal);text-underline-offset:3px;text-decoration:underline}.button-subtle:active:not(:disabled),.button-outline:active:not(:disabled),.quiz-option:active:not(:disabled),.home-links a:active{background:#d0ddff;transform:translateY(1px)}.topic-list button:active:not(:disabled),.icon-button:active:not(:disabled){background:#d0eee8;transform:translateY(1px)}.icon-button:hover:not(:disabled){background:#d3f0e8;border-color:#7dafaa}.brand:hover .brand-copy strong,.hanzi-link:hover .hanzi{color:var(--teal)}.mobile-nav a:hover,.mobile-nav a:active{color:var(--navy);background:#eef2ff}.desktop-nav a:active,.back-link:active,.text-link:active{color:var(--navy)}.daily-panel{scroll-margin-top:1rem}.site-footer a:focus-visible{outline-offset:3px;outline-color:#86f2e4}.site-footer .brand:hover .brand-copy strong,.footer-link-list a:hover,.footer-contact-row[href]:hover{color:#86f2e4}.footer-link-list a:hover,.footer-contact-row[href]:hover{background:#1e40af}.footer-link-list a:active,.footer-contact-row[href]:active{color:#fff;background:#173784}@media (max-width:700px){.site-footer{padding-bottom:calc(64px + env(safe-area-inset-bottom));margin-top:3rem;margin-bottom:0}.footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.7rem .9rem;padding-block:2.6rem 2rem;display:grid}.footer-brand{order:0;grid-column:1/-1}.footer-explore{order:1}.footer-info{order:2}.footer-contact{order:3;grid-column:1/-1}.footer-bottom{flex-direction:column;align-items:flex-start;gap:.4rem;padding-block:1.1rem;display:flex}}@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-outline-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}