@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(./newsreader-vietnamese-opsz-normal-BjhtXyW2.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(./newsreader-latin-ext-opsz-normal-BQn1nviT.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(./newsreader-latin-opsz-normal-s-izfB6B.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(./newsreader-vietnamese-opsz-italic-DTr-ymY4.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(./newsreader-latin-ext-opsz-italic-CSPGnFdO.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(./newsreader-latin-opsz-italic-kJKFiXvB.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Public Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./public-sans-vietnamese-wght-normal-CtlIRbEm.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Public Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./public-sans-latin-ext-wght-normal-MQgHevqp.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Public Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./public-sans-latin-wght-normal-DdeTHZLK.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper: #e9eeea;--paper-2: #f4f7f4;--ink: #123a31;--ink-2: #4a6660;--ink-3: #7c918b;--line: #c5d1cb;--line-soft: #d8e1dc;--right: #1d7350;--wrong: #9e3534;--brass: #9a7424;--serif: "Newsreader Variable", "Iowan Old Style", Georgia, serif;--sans: "Public Sans Variable", -apple-system, system-ui, sans-serif;--r-sm: 6px;--r: 12px;--r-lg: 20px;--gutter: 20px;--col: 620px;--tabs-h: 58px;--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px);color-scheme:light}@media(prefers-color-scheme:dark){:root{--paper: #0d1715;--paper-2: #15221f;--ink: #dce8e2;--ink-2: #9db3ab;--ink-3: #6f857e;--line: #2a3b36;--line-soft: #1e2d29;--right: #5bbf8e;--wrong: #e2857a;--brass: #d2a94e;color-scheme:dark}}*,*:before,*:after{box-sizing:border-box}*{margin:0}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%;background:var(--paper)}body{font-family:var(--sans);font-size:16px;line-height:1.5;color:var(--ink);background:var(--paper);min-height:100dvh;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-variant-numeric:tabular-nums}a{color:inherit;text-decoration:none}button,input,select{font:inherit;color:inherit}button{background:none;border:0;cursor:pointer;touch-action:manipulation}button:disabled{cursor:default}:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:var(--r-sm)}svg{flex:none}#view{max-width:var(--col);margin:0 auto;padding:calc(var(--safe-t) + 12px) var(--gutter) calc(var(--tabs-h) + var(--safe-b) + 32px);outline:none}body[data-immersive=yes] #view{padding-bottom:calc(var(--safe-b) + 150px)}body[data-immersive=yes] #tabs{display:none}#tabs{position:fixed;inset:auto 0 0;z-index:10;display:flex;justify-content:center;padding-bottom:var(--safe-b);background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-top:1px solid var(--line)}#tabs a{flex:1;max-width:120px;height:var(--tabs-h);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;font-weight:500;color:var(--ink-3)}#tabs a[aria-current]{color:var(--ink)}#tabs a[aria-current] svg{stroke-width:2}@media(min-width:900px){#tabs{inset:0 auto 0 0;width:96px;flex-direction:column;justify-content:flex-start;padding:28px 0;border-top:0;border-right:1px solid var(--line)}#tabs a{flex:none;height:72px;max-width:none}#view{padding-bottom:64px;padding-top:40px}body[data-immersive=yes] #view{padding-bottom:150px}}.page-head{padding:20px 0 24px}.page-head h1{font-family:var(--serif);font-size:38px;line-height:1.05;font-weight:500;font-variation-settings:"opsz" 72;letter-spacing:-.015em}.page-head .date{color:var(--ink-2);margin-top:6px;max-width:46ch}.page-head .date:first-letter{text-transform:uppercase}.page-head.with-back{padding-top:4px}.back{display:inline-flex;align-items:center;gap:2px;margin:0 0 14px -8px;padding:6px 8px;color:var(--ink-2);font-size:15px}.back svg{width:20px;height:20px}.code{display:inline-block;font-size:11px;font-weight:650;letter-spacing:.06em;padding:1px 5px;border:1px solid var(--line);border-radius:4px;color:var(--ink-2);line-height:1.5;vertical-align:1px}.code.big{font-size:13px;margin-bottom:8px}.section-title.first{margin-top:8px}.section-title{font-family:var(--serif);font-size:22px;font-weight:500;margin:40px 0 14px;font-variation-settings:"opsz" 36}.fine{color:var(--ink-3);font-size:13.5px;margin-top:10px;max-width:60ch}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:0 20px;border-radius:var(--r);font-weight:600;font-size:16px;text-align:center;transition:transform .12s ease,background-color .15s ease}.btn:active:not(:disabled){transform:scale(.98)}.btn.primary{background:var(--ink);color:var(--paper)}.btn.ghost{border:1px solid var(--line);color:var(--ink);background:var(--paper-2)}.btn.ghost.is-on{border-color:var(--brass);color:var(--brass)}.btn:disabled{opacity:.4}.btn.wide{width:100%}.btn svg{width:18px;height:18px}.btn-count{font-size:13px;font-weight:600;min-width:26px;padding:1px 7px;border-radius:99px;background:color-mix(in srgb,var(--paper) 18%,transparent)}.btn.ghost .btn-count{background:var(--line-soft)}.icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;color:var(--ink-2);margin-left:-10px}.actions{display:grid;gap:10px}.rosette{position:relative;width:min(100%,360px);margin:0 auto;aspect-ratio:1}.rosette svg{width:100%;height:100%;overflow:visible}.ros-target path{fill:none;stroke:var(--line);stroke-width:.5}.ros-ink path{fill:none;stroke:var(--ink);stroke-width:.55;stroke-opacity:.85}.ros-rings path{fill:none;stroke:var(--brass);stroke-width:.6;stroke-opacity:.9}.ros-hub{fill:var(--paper);stroke:var(--line);stroke-width:.6}.ros-label text{font:650 10.5px var(--sans);letter-spacing:.06em;fill:var(--ink-2)}.ros-label:hover text,.ros-label:focus-visible text{fill:var(--ink);text-decoration:underline}.ros-label:focus-visible{outline:none}.ros-center{position:absolute;inset:0;display:grid;place-content:center;text-align:center;pointer-events:none}.ros-center strong{font-family:var(--serif);font-weight:500;font-size:36px;line-height:1;font-variation-settings:"opsz" 72;letter-spacing:-.02em}.ros-center small{font-size:18px;margin-left:1px}.ros-center span{font-size:11.5px;color:var(--ink-2);margin-top:3px}.rose-note{text-align:center;color:var(--ink-3);font-size:13px;margin:4px auto 28px;max-width:34ch}@media(prefers-reduced-motion:no-preference){.ros-ink path{stroke-dasharray:1;stroke-dashoffset:1;animation:engrave 1.6s cubic-bezier(.3,.6,.2,1) forwards;animation-delay:calc(var(--i) * 45ms)}@keyframes engrave{to{stroke-dashoffset:0}}}.notice+.notice{margin-top:-10px}.notice{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;margin-bottom:20px;border-radius:var(--r);border:1px solid var(--brass);color:var(--ink);background:color-mix(in srgb,var(--brass) 8%,var(--paper-2))}.notice svg{color:var(--brass)}.plan{padding:22px 20px 18px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg)}.plan h2{font-family:var(--serif);font-size:24px;font-weight:500;line-height:1.2;font-variation-settings:"opsz" 36}.plan>p{color:var(--ink-2);margin:6px 0 18px}.meter{height:4px;border-radius:4px;background:var(--line-soft);margin-top:18px;overflow:hidden}.meter span{display:block;height:100%;background:var(--ink);border-radius:4px;transition:width .4s ease}.meter.thin{margin:0;height:3px;width:100%}.meter-label{font-size:13px;color:var(--ink-2);margin-top:8px;display:flex;justify-content:space-between}.seal{color:var(--brass);font-weight:600}.links{list-style:none;padding:0;margin-top:24px;border-top:1px solid var(--line)}.links li{border-bottom:1px solid var(--line)}.links a,.links button,.links label{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 0;text-align:left;cursor:pointer}.links strong{display:block;font-weight:600}.links span{color:var(--ink-2);font-size:14.5px}.links strong{color:var(--ink);font-size:16px}.links svg{color:var(--ink-3);width:20px}.links button:disabled{opacity:.5}.links .danger strong{color:var(--wrong)}.row-link{display:flex;align-items:center;gap:12px;padding:18px 0;color:var(--ink);font-weight:600}.row-link span{flex:1}.row-link svg:last-child{color:var(--ink-3);width:20px}.search{display:flex;align-items:center;gap:10px;padding:0 14px;height:46px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);color:var(--ink-3)}.search:focus-within{border-color:var(--ink-2)}.search input{flex:1;min-width:0;border:0;background:none;outline:none;font-size:16px;color:var(--ink)}.search input::placeholder{color:var(--ink-3)}.result-count{color:var(--ink-3);font-size:13.5px;margin:16px 0 4px}.topic-list{list-style:none;padding:0;margin-top:12px}.topic-list li{border-bottom:1px solid var(--line)}.topic-list a,.topic-list button{width:100%;display:flex;align-items:center;gap:14px;padding:16px 0;text-align:left}.topic-list .code{width:42px;text-align:center}.topic-list svg{color:var(--ink-3);width:20px}.t-body{flex:1;min-width:0;display:grid;gap:6px}.t-name{font-weight:600}.t-meta{font-size:13px;color:var(--ink-2)}.stack{display:flex;height:6px;border-radius:3px;background:var(--line-soft);overflow:hidden}.stack span{height:100%}.s-mastered{background:var(--ink)}.s-learning{background:color-mix(in srgb,var(--ink) 35%,var(--line-soft))}.topic-stats{margin-bottom:24px}.topic-stats .stack{height:10px;border-radius:5px}.topic-stats dl{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}.topic-stats dt{font-size:12px;color:var(--ink-2);line-height:1.3}.topic-stats dd{font-family:var(--serif);font-size:26px;font-weight:500;font-variation-settings:"opsz" 36}.segmented{display:flex;padding:3px;gap:2px;border-radius:10px;background:var(--line-soft);margin:4px 0 16px}.segmented button{flex:1;padding:7px 4px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink-2)}.segmented [aria-selected=true],.segmented [aria-checked=true]{background:var(--paper-2);color:var(--ink);box-shadow:0 1px 2px #00000014}.bank{list-style:none;padding:0}.bank>li{border-bottom:1px solid var(--line)}.bank summary{list-style:none;cursor:pointer;padding:14px 0;font-family:var(--serif);font-size:17.5px;line-height:1.4}.bank summary::-webkit-details-marker{display:none}.bank summary .code{font-family:var(--sans);margin-right:8px}.bank details>p{color:var(--ink-2);padding-bottom:16px;font-family:var(--serif);font-size:16.5px;line-height:1.55}.bank-opts{list-style:none;padding:0 0 12px;display:grid;gap:4px}.bank-opts li{display:flex;gap:10px;padding:6px 10px;border-radius:8px;color:var(--ink-2);font-size:15px}.bank-opts .letter{font-weight:600;width:1em;flex:none}.bank-opts li.right{color:var(--right);background:color-mix(in srgb,var(--right) 10%,transparent);font-weight:550}.bank-opts li.wrong{color:var(--wrong);background:color-mix(in srgb,var(--wrong) 9%,transparent);text-decoration:line-through;text-decoration-thickness:1px}.empty{color:var(--ink-3);padding:24px 0;list-style:none}.bar{position:sticky;top:0;z-index:5;margin:calc(-1 * (var(--safe-t) + 12px)) calc(-1 * var(--gutter)) 0;padding:calc(var(--safe-t) + 4px) var(--gutter) 4px;display:flex;align-items:center;gap:12px;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.bar-mid{flex:1;display:flex;justify-content:center}.count{font-size:14px;color:var(--ink-2);min-width:44px;text-align:right}.track{display:flex;gap:3px;width:100%}.track span{flex:1;height:4px;border-radius:2px;background:var(--line-soft)}.track .now{background:var(--ink-3)}.track .ok{background:var(--right)}.track .bad{background:var(--wrong)}.question{padding-top:20px}.q-meta{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2)}.tag{color:var(--brass);font-weight:600;font-size:12.5px}.q-text{font-family:var(--serif);font-weight:450;font-size:22px;line-height:1.38;font-variation-settings:"opsz" 24;margin:12px 0 22px;max-width:34em;text-wrap:pretty}.options{list-style:none;padding:0;display:grid;gap:10px}.option{width:100%;display:flex;align-items:flex-start;gap:12px;text-align:left;padding:13px 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--paper-2);line-height:1.4;transition:border-color .15s,background-color .15s,opacity .2s}@media(hover:hover){.option:hover:not(:disabled){border-color:var(--ink-3)}}.letter{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--ink-2);margin-top:-1px}.opt-text{padding-top:1px}.option.is-right{border-color:var(--right);background:color-mix(in srgb,var(--right) 9%,var(--paper-2))}.option.is-right .letter{background:var(--right);border-color:var(--right);color:var(--paper)}.option.is-wrong{border-color:var(--wrong);background:color-mix(in srgb,var(--wrong) 8%,var(--paper-2))}.option.is-wrong .letter{background:var(--wrong);border-color:var(--wrong);color:var(--paper)}.option.is-dim{opacity:.5}.option.is-picked{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.option.is-picked .letter{background:var(--ink);border-color:var(--ink);color:var(--paper)}.why{margin-top:22px;padding:4px 0 4px 16px;border-left:2px solid var(--ink-3)}.why h3{font-size:15px;font-weight:650;margin-bottom:4px}.why p{font-family:var(--serif);font-size:17.5px;line-height:1.55;color:var(--ink);max-width:36em}:is(.why,details) p.source{margin-top:10px;padding-bottom:14px;font:13.5px/1.45 var(--sans);display:grid;gap:1px}:is(.why,details) p.source a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}:is(.why,details) p.source span{color:var(--ink-3)}:is(.why,details) p.source span:first-letter{text-transform:uppercase}@media(prefers-reduced-motion:no-preference){.why:not([hidden]){animation:reveal .25s ease-out}@keyframes reveal{0%{opacity:0;transform:translateY(4px)}}}.dock{position:fixed;inset:auto 0 0;z-index:6;padding:12px var(--gutter) calc(var(--safe-b) + 12px);background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line)}.dock>*{max-width:var(--col);margin-left:auto;margin-right:auto}.dock-row{display:flex;gap:10px}.dock-row .btn{flex:1}.dock-row.three .btn:nth-child(2){flex:.8}.hint{text-align:center;font-size:13.5px;color:var(--ink-3);padding:2px 0 10px}.dock>.hint:only-child{padding:14px 0}.summary{padding-top:28px}.context{color:var(--ink-2);font-size:15px}.display{font-family:var(--serif);font-weight:500;font-size:56px;line-height:1;font-variation-settings:"opsz" 72;letter-spacing:-.025em;margin:6px 0 10px}.lede{color:var(--ink-2);font-size:17px;max-width:40ch}.review-list{list-style:none;padding:0;margin-top:24px;border-top:1px solid var(--line)}.review-list>li{border-bottom:1px solid var(--line)}.review-list summary{list-style:none;cursor:pointer;padding:13px 0;display:flex;gap:10px;align-items:baseline;font-family:var(--serif);font-size:16.5px;line-height:1.4}.review-list summary::-webkit-details-marker{display:none}.num{color:var(--ink-3);font-family:var(--sans);font-size:13px}.mark{flex:none;width:8px;height:8px;border-radius:50%;transform:translateY(-2px)}.ok .mark{background:var(--right)}.bad .mark{background:var(--wrong)}.review-body,.review-list details>p,.review-list details>.bank-opts{padding-left:18px}.review-list details>p,.review-body p{color:var(--ink-2);padding-bottom:14px;font-size:15px}.review-body .yours{color:var(--wrong);padding-bottom:4px}.review-body .right{color:var(--right);padding-bottom:8px}.review-list .yours{color:var(--wrong)}.flash{width:100%;min-height:52dvh;margin-top:20px;padding:22px 22px 26px;display:flex;flex-direction:column;gap:18px;text-align:left;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);position:relative;overflow:hidden}.flash-front{font-family:var(--serif);font-size:25px;line-height:1.3;font-weight:450;font-variation-settings:"opsz" 36;text-wrap:pretty}.flash-back{font-family:var(--serif);font-size:18.5px;line-height:1.55;color:var(--ink);padding-top:18px;border-top:1px solid var(--line)}.flash-hint{margin-top:auto;color:var(--ink-3);font-size:13.5px}.flash.is-revealed .flash-front{font-size:19px;color:var(--ink-2)}@media(prefers-reduced-motion:no-preference){.flash-back:not([hidden]){animation:reveal .25s ease-out}}.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.grade{display:grid;gap:1px;padding:9px 4px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper-2);text-align:center;position:relative}.grade strong{font-size:15px;font-weight:600}.grade span{font-size:12px;color:var(--ink-3)}.grade kbd{position:absolute;top:4px;right:6px;font:600 10px var(--sans);color:var(--ink-3)}@media(hover:none){.grade kbd{display:none}}.g-again strong{color:var(--wrong)}.g-good{background:var(--ink);border-color:var(--ink)}.g-good strong{color:var(--paper)}.g-good span{color:color-mix(in srgb,var(--paper) 70%,transparent)}.g-good kbd{color:color-mix(in srgb,var(--paper) 60%,transparent)}.choice{list-style:none;padding:0;display:grid;gap:12px}.choice button{width:100%;display:flex;align-items:center;gap:16px;padding:18px 16px;text-align:left;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper-2)}.choice-num{font-family:var(--serif);font-size:40px;font-weight:500;line-height:1;min-width:64px;font-variation-settings:"opsz" 72;letter-spacing:-.02em}.choice strong{display:block;font-size:17px;margin-bottom:2px}.choice span span,.choice button>span:nth-child(2){color:var(--ink-2);font-size:14.5px}.choice strong{color:var(--ink)}.choice svg{color:var(--ink-3)}.choice .gap{display:block;margin-top:6px;font-size:13px;color:var(--brass)}.choice+.section-title{margin-top:32px}.structure{margin-top:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.structure summary{cursor:pointer;padding:15px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between}.structure summary::-webkit-details-marker{display:none}.structure summary:after{content:"+";color:var(--ink-3);font-weight:400;font-size:20px;line-height:1}.structure[open] summary:after{content:"−"}.structure table{width:100%;border-collapse:collapse;margin-bottom:18px;font-size:14.5px}.structure caption{text-align:left;font-family:var(--serif);font-size:18px;padding-bottom:6px}.structure th,.structure td{padding:6px 0;border-top:1px solid var(--line-soft);font-weight:400;text-align:left}.structure td{text-align:right}.structure tfoot th,.structure tfoot td{color:var(--ink-2);font-weight:600;border-top-color:var(--line)}.structure .fine{margin:0 0 16px}.structure a,.fine a{text-decoration:underline;text-underline-offset:3px}.history{list-style:none;padding:0;border-top:1px solid var(--line)}.history li{border-bottom:1px solid var(--line)}.history a{display:flex;align-items:center;gap:16px;padding:12px 0}.h-score{font-family:var(--serif);font-size:26px;font-weight:500;min-width:64px}.h-score.ok{color:var(--right)}.h-score.bad{color:var(--wrong)}.h-body{flex:1;display:grid;font-size:14px;color:var(--ink-2)}.h-body strong{color:var(--ink);font-weight:600;font-size:15px}.history svg{color:var(--ink-3);width:20px}.timer{font-size:17px;font-weight:600;letter-spacing:.02em}.timer.low{color:var(--wrong)}.sheet{margin:auto auto 0;width:100%;max-width:var(--col);max-height:85dvh;border:0;border-radius:var(--r-lg) var(--r-lg) 0 0;padding:18px var(--gutter) calc(var(--safe-b) + 18px);background:var(--paper);color:var(--ink)}.sheet::backdrop{background:#00000059}.sheet-head{display:flex;justify-content:space-between;align-items:center}.sheet-head h2{font-family:var(--serif);font-weight:500;font-size:22px}.sheet-head .icon-btn{margin:0 -10px 0 0}.legend{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-2);margin:6px 0 14px}.legend span{width:12px;height:12px;border-radius:3px;display:inline-block}.legend span+span,.legend .k-flag{margin-left:10px}.k-ans{background:var(--ink)}.k-flag{border:2px solid var(--brass)}.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(42px,1fr));gap:6px;margin-bottom:18px}.qgrid button{height:40px;border-radius:8px;border:1px solid var(--line);font-size:13.5px;color:var(--ink-2);background:var(--paper-2)}.qgrid .ans{background:var(--ink);border-color:var(--ink);color:var(--paper)}.qgrid .flag{box-shadow:inset 0 0 0 2px var(--brass)}.qgrid .cur{outline:2px solid var(--ink-3);outline-offset:1px}.score{padding:8px 0}.score.ok .display{color:var(--right)}.score.bad .display{color:var(--wrong)}.score-line,.bar-track{position:relative;height:8px;border-radius:4px;background:var(--line-soft)}.score-line span,.bar-track span{position:absolute;inset:0 auto 0 0;border-radius:4px}.ok>.score-line span,.bar-track .ok{background:var(--right)}.bad>.score-line span,.bar-track .bad{background:var(--wrong)}.components{list-style:none;padding:0;margin-top:18px;display:grid;gap:16px}.components li{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:baseline}.components .score-line{grid-column:1 / -1}.comp-name{font-weight:600}.comp-num{font-size:14px;color:var(--ink-2)}.components .bad .comp-num{color:var(--wrong)}.score-line i,.bar-track i{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--ink)}.bars{list-style:none;padding:0;display:grid;gap:4px}.bars a{display:grid;grid-template-columns:46px 1fr 48px;gap:12px;align-items:center;padding:6px 0}.bars .bar-track{margin:0;height:6px}.bars .bar-track i{top:-3px;bottom:-3px;width:1.5px;opacity:.6}.bar-num{font-size:13.5px;color:var(--ink-2);text-align:right}.figures{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}.figures>div{padding:14px 0;border-bottom:1px solid var(--line)}.figures>div:nth-child(odd){padding-right:12px;border-right:1px solid var(--line)}.figures>div:nth-child(2n){padding-left:16px}.figures dt{font-size:13px;color:var(--ink-2)}.figures dd{font-family:var(--serif);font-size:32px;font-weight:500;line-height:1.15;font-variation-settings:"opsz" 48}.figures small{font-family:var(--sans);font-size:13px;color:var(--ink-2);font-weight:400}.heat-months{display:grid;gap:3px;font-size:11px;color:var(--ink-3);margin-bottom:4px}.heat-months span{white-space:nowrap}.heat{display:grid;grid-template-rows:repeat(7,auto);gap:3px}.heat span{aspect-ratio:1;border-radius:2px}.heat .l0{background:var(--line-soft)}.heat .l1{background:color-mix(in srgb,var(--ink) 25%,var(--line-soft))}.heat .l2{background:color-mix(in srgb,var(--ink) 50%,var(--line-soft))}.heat .l3{background:color-mix(in srgb,var(--ink) 75%,var(--line-soft))}.heat .l4{background:var(--ink)}.heat .lfuture{background:transparent}.topic-table{width:100%;border-collapse:collapse;font-size:14.5px}.topic-table th,.topic-table td{padding:10px 0;border-bottom:1px solid var(--line);text-align:left;font-weight:400}.topic-table thead th{font-size:12.5px;color:var(--ink-2);padding-top:0}.topic-table thead th:not(:first-child),.topic-table td{text-align:right}.topic-table tbody th a{display:flex;gap:8px;align-items:center}.topic-table .code{width:40px;text-align:center}.topic-table abbr{text-decoration:none}.topic-table td.low{color:var(--wrong)}.mini{display:inline-block;width:44px;height:5px;border-radius:3px;background:var(--line-soft);margin-right:8px;vertical-align:2px;overflow:hidden}.mini span{display:block;height:100%;background:var(--ink)}@media(max-width:380px){.mini{display:none}}.setting{margin-bottom:22px}.setting>p:first-child{font-weight:600;margin-bottom:8px}.chips{display:flex;flex-wrap:wrap;gap:8px}.chips button{padding:8px 14px;border-radius:99px;border:1px solid var(--line);background:var(--paper-2);font-size:14.5px;color:var(--ink-2)}.chips [aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--paper)}.file-row{cursor:pointer}.install{margin-top:32px;padding:18px 20px;border:1px dashed var(--line);border-radius:var(--r-lg)}.install h2{font-family:var(--serif);font-weight:500;font-size:20px}.install p{color:var(--ink-2);margin-top:4px;font-size:15px}.converter{padding:20px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg)}.converter h2,.sheet-block h2{font-family:var(--serif);font-weight:500;font-size:22px;margin-bottom:14px}.conv-inputs{display:grid;grid-template-columns:1fr 1fr;gap:10px}.conv-inputs label{display:grid;gap:4px;font-size:13px;color:var(--ink-2)}.conv-inputs label:first-child{grid-column:1 / -1}.conv-inputs input,.conv-inputs select{height:46px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);font-size:17px;color:var(--ink);width:100%;appearance:none;-webkit-appearance:none}.conv-inputs select{font-size:16px;padding-right:34px;background:var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%237c918b' stroke-width='1.6'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 14px center}.conv-inputs:has(#per-wrap[hidden]) label:nth-child(2){grid-column:1 / -1}.conv-table small{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.04em}.steps{margin:16px 0;padding-left:20px;color:var(--ink-2);font-size:14.5px;display:grid;gap:2px}.conv-table{width:100%;border-collapse:collapse;font-size:13.5px}.conv-table th,.conv-table td{padding:8px 4px;border-top:1px solid var(--line);text-align:right;font-weight:400}.conv-table thead th{font-size:12px;color:var(--ink-2);border-top:0;vertical-align:bottom}.conv-table th[scope=row],.conv-table thead th:first-child{text-align:left}.conv-table .ea td{text-align:left;font-weight:650}.conv-table .ea th{font-weight:650}.sheet-block{margin-top:36px}.sheet-block dl>div{padding:10px 0;border-top:1px solid var(--line)}.sheet-block dt{font-size:14px;color:var(--ink-2)}.sheet-block dd{margin-top:2px}.sheet-block .note{padding:10px 0;border-top:1px solid var(--line);font-size:14px;color:var(--brass)}.f{font-family:var(--serif);font-size:19px;font-style:italic;font-variation-settings:"opsz" 24}.f sup,.f sub{font-size:.65em;line-height:0}