:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#fff;--surface:#fff;--surface-2:#f8f8fa;--surface-3:#f1f1f5;--ink:#111118;--cell:#2f3037;--muted:#52525e;--heading:#8b8b99;--placeholder:#a8a8b3;--faint:#ededf2;--line:#e4e4e9;--blue:#6366f1;--blue-soft:#6366f114;--green:#10b981;--green-soft:#10b9811a;--amber:#f59e0b;--amber-soft:#f59e0b1a;--red:#ef4444;--red-soft:#ef44441a;--code-bg:#f6f8fa;--code-text:#24292f;--code-line:#d8dee4;--code-comment:#6a737d;--code-keyword:#d73a49;--code-number:#005cc5;--code-string:#032f62;--code-title:#6f42c1;--code-type:#e36209;--code-tag:#22863a;--code-meta:#6a737d;--header-bg:#ffffffd1;--popover-bg:#fffffffa;--panel-bg:#fffffff5;--overlay:#11111824;--popover-shadow:0 18px 48px #1111181c;--drawer-shadow:-18px 0 40px #11111814;--row-hover:#fcfcfd;--underline:#11111842;--star-empty:#dedee7;--solid-bg:#111118;--solid-text:#fff;--solid-bg-hover:#24242c;--select-arrow:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b8b99' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");--content-width:1120px;color:var(--ink);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Arial,sans-serif}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0d0f14;--surface:#101218;--surface-2:#171a22;--surface-3:#202431;--ink:#f2f4f8;--cell:#d9dde7;--muted:#a2aaba;--heading:#7d8798;--placeholder:#5f6878;--faint:#232936;--line:#303849;--blue:#8b8df8;--blue-soft:#8b8df826;--green:#34d399;--green-soft:#34d39921;--amber:#fbbf24;--amber-soft:#fbbf2421;--red:#fb7185;--red-soft:#fb718524;--code-bg:#161b22;--code-text:#d8dee9;--code-line:#30363d;--code-comment:#8b949e;--code-keyword:#ff7b72;--code-number:#79c0ff;--code-string:#a5d6ff;--code-title:#d2a8ff;--code-type:#ffa657;--code-tag:#7ee787;--code-meta:#8b949e;--header-bg:#101218c7;--popover-bg:#101218fa;--panel-bg:#101218f5;--overlay:#0000006b;--popover-shadow:0 18px 54px #00000057;--drawer-shadow:-18px 0 44px #00000047;--row-hover:#141721;--underline:#f2f4f84d;--star-empty:#373d4d;--solid-bg:#eef2f7;--solid-text:#101218;--solid-bg-hover:#fff;--select-arrow:url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237d8798' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E")}*{box-sizing:border-box}html{scrollbar-gutter:stable;background:var(--bg);min-width:320px}html:has(.answer-editor--fullscreen){scrollbar-gutter:auto}body{min-height:100vh;color:var(--ink);background:var(--surface);margin:0;font-size:14px;line-height:1.6}button,input,select,textarea{color:inherit;font:inherit}button,select{cursor:pointer}button{background:0 0;border:0}a{color:inherit;text-decoration:none}button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}select:focus,select:focus-visible{outline:none}.page-shell{width:min(var(--content-width), calc(100vw - 80px));margin:0 auto}.site-header{z-index:20;background:var(--header-bg);-webkit-backdrop-filter:saturate(180%)blur(20px);backdrop-filter:saturate(180%)blur(20px);position:sticky;top:0}.site-header__inner{width:min(calc(var(--content-width) - 32px), calc(100vw - 80px));justify-content:space-between;align-items:center;gap:24px;min-height:54px;margin:0 auto;display:flex}.brand{color:var(--ink);align-items:center;font-size:18px;font-weight:700;display:inline-flex}.site-nav{align-items:center;gap:16px;display:flex}.site-nav>a{color:var(--muted);font-size:12px;font-weight:560}.site-nav>a:hover{color:var(--ink)}.account-menu{position:relative}.avatar-trigger{min-height:32px;color:var(--heading);border-radius:999px;align-items:center;gap:3px;padding:0 4px 0 0;display:inline-flex}.avatar-trigger:hover,.avatar-trigger[aria-expanded=true]{color:var(--ink);background:var(--surface-2)}.account-avatar{width:24px;height:24px;color:var(--cell);background:var(--surface-3);letter-spacing:-.02em;border-radius:999px;place-items:center;font-size:11px;font-weight:760;display:inline-grid;overflow:hidden}.account-avatar img{object-fit:cover;width:100%;height:100%;display:block}.account-avatar--large{width:34px;height:34px;font-size:13px}.account-popover{z-index:80;border:1px solid var(--faint);background:var(--popover-bg);width:246px;box-shadow:var(--popover-shadow);border-radius:14px;padding:7px;position:absolute;top:calc(100% + 8px);right:0}.account-summary a{border-radius:10px;align-items:center;gap:10px;padding:9px;display:flex}.account-summary a:hover,.account-row:hover{background:var(--surface-2)}.account-summary span:last-child{min-width:0;display:grid}.account-summary strong{color:var(--ink);font-size:13px;font-weight:680}.account-summary small,.account-row small{color:var(--heading);font-size:11px;font-weight:560}.account-progress{border-top:1px solid var(--faint);gap:8px;padding:7px 9px 10px;display:grid}.account-progress__head,.account-progress__meta{justify-content:space-between;align-items:center;gap:12px;display:flex}.account-progress__head{color:var(--muted);font-size:12px;font-weight:620}.account-progress__head strong{color:var(--ink);font-size:12px;font-weight:700}.account-progress__bar{background:var(--surface-3);border-radius:999px;height:5px;overflow:hidden}.account-progress__bar span{border-radius:inherit;background:var(--ink);height:100%;transition:width .18s;display:block}.account-progress__meta{color:var(--heading);font-size:11px;font-weight:560}.account-progress__filters{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:6px;display:grid}.account-progress__filters select{background-color:var(--surface-2);border-bottom:0;border-radius:7px;min-height:30px;padding-left:7px;font-size:12px;font-weight:620}.account-progress__filters select:disabled{cursor:default;opacity:.52}.account-menu-section{border-top:1px solid var(--faint);gap:2px;padding:6px 0;display:grid}.account-row{width:100%;min-height:35px;color:var(--cell);text-align:left;border-radius:9px;grid-template-columns:21px minmax(0,1fr) auto;align-items:center;gap:8px;padding:0 9px;font-size:13px;font-weight:560;display:grid}.account-row svg{color:var(--heading)}.account-row span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.account-row--muted{cursor:default;opacity:.56}.account-row--muted:hover{background:0 0}.account-theme-trigger[aria-expanded=true]{color:var(--ink);background:var(--surface-2)}.account-theme-options{border:0;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;min-inline-size:0;margin:0;padding:2px 9px 6px;display:grid}.account-theme-options button{min-height:28px;color:var(--heading);border-radius:7px;justify-content:center;align-items:center;gap:4px;font-size:12px;font-weight:620;display:inline-flex}.account-theme-options button:hover,.account-theme-options button[data-active=true]{color:var(--ink);background:var(--surface-2)}.account-theme-options button[data-active=true]{font-weight:720}.account-inline-actions{min-height:30px;color:var(--heading);align-items:center;gap:9px;padding:2px 9px;display:flex}.account-inline-actions button{min-height:26px;color:inherit;align-items:center;padding:0;font-size:12px;font-weight:620;display:inline-flex}.account-inline-actions button:hover{color:var(--ink)}.account-inline-actions>span{background:var(--line);width:1px;height:11px;display:block}.account-logout{color:var(--muted);margin-top:4px}.home-shell{padding:42px 0 72px}.catalog{width:min(980px,100%);margin:0 auto}.filter-bar{grid-template-columns:minmax(320px,1fr) auto;align-items:center;gap:24px;padding-bottom:10px;display:grid}.filter-actions{align-items:center;gap:12px;display:flex}.search-field{border-bottom:1px solid var(--line);min-width:0;min-height:40px;color:var(--muted);align-items:center;gap:8px;padding:0 12px;display:flex}.search-field:focus-within{border-color:var(--line)}.search-field input{width:100%;min-width:0;height:39px;color:var(--ink);background:0 0;border:0;outline:none}.search-field input::placeholder{color:var(--placeholder)}select{border:0;border-bottom:1px solid var(--line);appearance:none;width:100%;min-width:0;min-height:40px;color:var(--cell);background-color:#0000;background-image:var(--select-arrow);background-position:right 7px center;background-repeat:no-repeat;background-size:12px 12px;border-radius:0;padding:0 24px 0 8px;font-size:14px;font-weight:650}select::-ms-expand{display:none}.filter-select{flex:0 0 132px;width:132px}.filter-select--module{flex-basis:150px;width:150px}.filter-reset-button{width:40px;height:40px;color:var(--placeholder);border-radius:7px;place-items:center;font-size:17px;display:inline-grid}.filter-reset-button:hover{color:var(--muted);background:var(--surface-2)}.active-filter-slot{min-height:42px;padding-bottom:10px}.active-filter-row{flex-wrap:wrap;align-items:center;gap:8px;min-height:32px;display:flex}.active-filter-chip{border:1px solid var(--faint);min-height:30px;color:var(--muted);background:0 0;border-radius:7px;align-items:center;gap:7px;padding:0 10px;font-size:12px;font-weight:620;display:inline-flex}.active-filter-chip:hover{color:var(--ink);background:var(--surface-2)}.active-filter-chip span{color:var(--heading)}.active-filter-chip strong{color:var(--cell);font-weight:680}.catalog-heading{justify-content:space-between;align-items:center;min-height:42px;display:flex}.catalog-heading h1{color:var(--heading);margin:0;font-size:14px;font-weight:680}.question-table{--question-grid:38px minmax(0, 1fr) 76px 96px 74px;background:0 0;overflow:hidden}.question-table__header,.question-row{grid-template-columns:var(--question-grid);align-items:center;gap:12px;display:grid}.question-table__header{border-bottom:1px solid var(--faint);min-height:48px;padding:0 2px}.question-table__head{min-width:0;color:var(--heading);white-space:nowrap;align-items:center;gap:5px;font-size:12px;font-weight:680;display:inline-flex}.question-table__head--title{grid-column:1/3}.question-table__head--action{justify-content:flex-end}.question-table__sort{width:fit-content;padding:0}.question-table__sort:hover,.question-table__sort[data-active=true]{color:var(--ink)}.question-list{min-height:160px;display:grid}.question-row{border-bottom:1px solid var(--faint);background:var(--surface);min-height:60px;padding:0 2px}.question-row:hover{background:var(--row-hover)}.question-row__index{color:var(--heading);font-variant-numeric:tabular-nums;font-size:12px}.question-row__content{min-width:0}.question-row__title{max-width:100%;color:var(--ink);align-items:center;font-size:14.5px;font-weight:560;line-height:1.56;display:inline-flex}.question-row__title:hover{color:var(--ink);text-decoration:underline;-webkit-text-decoration-color:var(--underline);text-decoration-color:var(--underline);text-underline-offset:4px;text-decoration-thickness:1px}.question-row__difficulty{min-width:0}.difficulty{border:1px solid;border-radius:5px;justify-content:center;align-items:center;gap:5px;min-height:22px;padding:0 6px;font-size:11px;font-weight:600;line-height:1;display:inline-flex}.difficulty>span{border-radius:50%;width:6px;height:6px;display:block}.difficulty--1{color:var(--green);background:var(--green-soft);border-color:#10b98138}.difficulty--2{color:var(--amber);background:var(--amber-soft);border-color:#f59e0b38}.difficulty--3{color:var(--red);background:var(--red-soft);border-color:#ef444438}.difficulty--1>span{background:var(--green)}.difficulty--2>span{background:var(--amber)}.difficulty--3>span{background:var(--red)}.mastery-stars{border:0;align-items:center;gap:2px;margin:0;padding:0;display:flex}.mastery-star{width:22px;height:26px;color:var(--star-empty);place-items:center;padding:0;font-size:17px;line-height:1;transition:color .16s,transform .18s cubic-bezier(.2,.8,.2,1);display:inline-grid;transform:translateY(0)scale(1)}.mastery-star[data-active=true]{color:var(--amber)}.mastery-star:hover,.mastery-star:focus-visible{transform:translateY(-1px)scale(1.08)}.mastery-star[data-selected=true]{text-shadow:0 4px 14px #f59e0b2e}.answer-state{min-height:28px;color:var(--heading);background:var(--surface-3);border-radius:7px;justify-content:center;justify-self:end;align-items:center;padding:0 9px;font-size:11px;font-weight:680;line-height:1;display:inline-flex}.answer-state:hover{color:var(--blue);background:var(--blue-soft)}.pagination{justify-content:center;align-items:center;gap:8px;min-height:70px;display:flex}.pagination__group{align-items:center;gap:4px;display:flex}.pagination button,.pagination__disabled{width:34px;height:34px;color:var(--muted);font-variant-numeric:tabular-nums;border-radius:7px;place-items:center;font-size:12px;display:inline-grid}.pagination button:hover{color:var(--blue);background:var(--blue-soft)}.pagination button[aria-current=page]{color:#fff;background:var(--blue)}.pagination__disabled,.pagination__ellipsis{color:var(--placeholder)}.question-page{flex-direction:column;gap:18px;width:min(820px,100vw - 64px);padding-top:28px;padding-bottom:82px;display:flex}.question-main{gap:16px;min-width:0;display:grid}.question-breadcrumb{min-width:0;min-height:26px;color:var(--heading);align-items:center;gap:6px;font-size:12px;display:flex}.question-breadcrumb a,.question-breadcrumb span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.question-breadcrumb a:hover,.question-breadcrumb__module:hover{color:var(--blue)}.question-breadcrumb__module{min-width:0;max-width:180px;color:var(--muted);font-size:inherit;font-weight:inherit;line-height:inherit;align-items:center;gap:3px;padding:0;display:inline-flex}.question-breadcrumb__module span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.module-drawer{z-index:60;position:fixed;inset:0}.module-drawer__backdrop{background:var(--overlay);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);position:absolute;inset:0}.module-drawer__panel{border-left:1px solid var(--faint);background:var(--panel-bg);width:min(372px,100vw - 24px);height:100%;box-shadow:var(--drawer-shadow);flex-direction:column;display:flex;position:absolute;top:0;right:0}.module-drawer__header{border-bottom:1px solid var(--faint);justify-content:space-between;align-items:center;gap:16px;min-height:72px;padding:0 18px;display:flex}.module-drawer__header>div{min-width:0;display:grid}.module-drawer__header strong{color:var(--ink);font-size:15px;font-weight:680}.module-drawer__header span{color:var(--heading);font-size:12px}.module-drawer__close{width:30px;height:30px;color:var(--heading);border-radius:8px;place-items:center;display:inline-grid}.module-drawer__close:hover{color:var(--ink);background:var(--surface-2)}.module-drawer__list{align-content:start;padding:8px 18px 22px;display:grid;overflow-y:auto}.module-drawer__item{border-bottom:1px solid var(--faint);min-height:46px;color:var(--cell);grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;display:grid}.module-drawer__item span{color:var(--heading);font-variant-numeric:tabular-nums;font-size:12px}.module-drawer__item strong{min-width:0;color:inherit;text-overflow:ellipsis;white-space:nowrap;font-size:13.5px;font-weight:560;line-height:1.52;overflow:hidden}.module-drawer__item:hover,.module-drawer__item[data-active=true]{color:var(--ink)}.module-drawer__item[data-active=true] span{color:var(--blue)}.question-card{border:1px solid var(--faint);background:var(--surface);border-radius:16px;flex-direction:column;gap:16px;padding:28px 28px 24px;display:flex;position:relative}.question-card__actions{align-items:center;gap:8px;display:flex;position:absolute;top:18px;right:20px}.question-card h1{color:var(--ink);letter-spacing:-.01em;margin:0;padding-right:80px;font-size:20px;font-weight:680;line-height:1.72}.question-card__meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.tag{border:1px solid var(--faint);min-height:24px;color:var(--heading);background:0 0;border-radius:5px;align-items:center;padding:0 8px;font-size:11px;font-weight:560;line-height:1;display:inline-flex}.quiet-action{width:28px;height:28px;color:var(--heading);opacity:.72;border-radius:8px;justify-content:center;align-items:center;padding:0;font-size:0;display:inline-flex}.quiet-action:hover{color:var(--ink);background:var(--surface-2);opacity:1}.answer-section{background:0 0;border:1px solid #0000;border-radius:0;min-width:0}.section-heading{border-bottom:0;justify-content:space-between;align-items:center;gap:16px;min-height:34px;padding:0;display:flex}.section-heading h2{color:var(--ink);margin:0;font-size:14px;font-weight:650}.community-section{overflow:visible}.community-heading{align-items:center;gap:18px;min-height:42px}.community-title{align-items:center;gap:8px;padding-bottom:9px;line-height:1.2;display:inline-flex;position:relative}.community-title__icon{width:19px;height:19px;color:var(--muted);background:var(--surface-2);border-radius:6px;place-items:center;display:grid}.community-tabs,.community-sort{width:auto;border:0;align-items:center;gap:6px;min-inline-size:0;margin:0;padding:0;display:flex;overflow-x:auto}.community-sort{margin-left:auto}.community-tabs button,.community-sort button{min-height:28px;color:var(--heading);white-space:nowrap;border-radius:7px;align-items:center;padding:0 9px;font-size:12px;font-weight:620;display:inline-flex}.community-tabs button:hover,.community-tabs button[data-active=true],.community-sort button:hover,.community-sort button[data-active=true]{color:var(--ink);background:var(--surface-2)}.community-body{gap:14px;padding:0;display:grid}.answer-editor{background:0 0;gap:8px;padding:0;display:grid}.answer-editor__paper{border:1px solid var(--faint);background:var(--surface);border-radius:12px;overflow:hidden}.answer-editor__head{border-bottom:1px solid var(--faint);justify-content:space-between;align-items:center;gap:12px;min-height:38px;padding:5px 7px;display:flex}.answer-editor__head-actions{justify-content:flex-end;align-items:center;gap:4px;min-width:0;display:flex}.answer-editor__kind{border:0;align-items:center;gap:3px;min-inline-size:0;margin:0;padding:0;display:flex}.answer-editor__kind button{min-height:27px;color:var(--heading);border-radius:7px;align-items:center;padding:0 10px;font-size:12px;font-weight:660;display:inline-flex}.answer-editor__kind button:hover,.answer-editor__kind button[data-active=true]{color:var(--ink);background:var(--surface-2)}.answer-editor__state{color:var(--heading);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:560;overflow:hidden}.answer-editor__collapse-button{min-height:25px;color:var(--heading);white-space:nowrap;border-radius:7px;align-items:center;padding:0 8px;font-size:12px;font-weight:620;display:inline-flex}.answer-editor__collapse-button:hover{color:var(--ink);background:var(--surface-2)}.answer-editor__toolbar{border-bottom:1px solid var(--faint);justify-content:space-between;align-items:center;gap:12px;min-height:39px;padding:5px 7px;display:flex}.answer-editor__tools,.answer-editor__mode,.answer-editor__view-actions{align-items:center;gap:3px;display:flex}.answer-editor__mode{border:0;min-inline-size:0;margin:0;padding:0}.answer-editor__tools{min-width:0;overflow-x:auto}.answer-editor__tools button,.answer-editor__mode button,.answer-editor__fullscreen-button{min-height:27px;color:var(--heading);white-space:nowrap;border-radius:7px;justify-content:center;align-items:center;padding:0 8px;font-size:12px;font-weight:620;display:inline-flex}.answer-editor__tools button{font-family:ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace}.answer-editor__tools button:hover,.answer-editor__mode button:hover,.answer-editor__mode button[data-active=true],.answer-editor__fullscreen-button:hover{color:var(--ink);background:var(--surface-2)}.answer-editor textarea{resize:vertical;width:100%;min-height:172px;color:var(--cell);background:var(--surface);border:0;border-radius:0;outline:none;padding:14px 16px;line-height:1.76}.answer-editor textarea:focus{box-shadow:inset 0 0 0 1px var(--line)}.answer-editor textarea::placeholder{color:var(--placeholder)}.markdown-code-editor{background:#1f242d;overflow:hidden}.markdown-code-editor .cm-editor{background:#1f242d;min-height:198px;font-size:13.5px}.markdown-code-editor .cm-focused{outline:0}.markdown-code-editor .cm-scroller{min-height:198px;font-family:ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace;line-height:1.72}.markdown-code-editor .cm-content{padding:14px 0}.markdown-code-editor .cm-line{padding:0 16px}.markdown-code-editor .cm-gutters{color:#8f9bab;background:#171b22;border-right:1px solid #303844}.markdown-code-editor .cm-activeLine{background:#27313d}.markdown-code-editor .cm-activeLineGutter{color:#d4dbe7;background:#222b36}.markdown-code-editor .cm-cursor{border-left-color:#58a6ff}.markdown-code-editor .cm-placeholder{color:#788394}.answer-editor__footer{min-height:28px;color:var(--heading);justify-content:flex-end;align-items:center;gap:12px;font-size:12px;display:flex}.answer-editor__actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:6px;display:flex}.answer-editor__secondary-action,.answer-editor__publish,.answer-editor__login{min-height:26px;color:var(--heading);border-radius:6px;align-items:center;padding:0 8px;font-size:12px;font-weight:620;display:inline-flex}.answer-editor__secondary-action:hover,.answer-editor__login:hover{color:var(--ink);background:var(--surface-2)}.answer-editor__publish{color:var(--solid-text);background:var(--solid-bg)}.answer-editor__publish:hover{background:var(--solid-bg-hover)}.answer-editor__secondary-action{color:var(--heading)}.answer-editor__secondary-action:disabled,.answer-editor__publish:disabled{cursor:default;opacity:.36}.answer-editor__secondary-action:disabled:hover{color:var(--heading);background:0 0}.answer-editor__publish:disabled:hover{background:var(--solid-bg)}.answer-editor__error{color:var(--red);margin-right:auto}.answer-editor__preview{min-height:172px;padding:18px 18px 22px}.answer-editor--collapsed{display:block}.answer-editor__collapsed-trigger{width:100%;min-height:42px;color:var(--muted);text-align:left;justify-content:space-between;align-items:center;gap:12px;padding:0 3px;display:flex}.answer-editor__collapsed-trigger:hover{color:var(--ink)}.answer-editor__collapsed-trigger span{align-items:baseline;gap:9px;min-width:0;display:flex}.answer-editor__collapsed-trigger strong{color:var(--ink);font-size:14px;font-weight:680}.answer-editor__collapsed-trigger small{color:var(--heading);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:560;overflow:hidden}.answer-editor__collapsed-trigger em{color:var(--heading);flex:none;font-size:12px;font-style:normal;font-weight:620}.answer-editor__collapsed-trigger:hover em{color:var(--ink)}.answer-editor--fullscreen{z-index:80;background:var(--surface);grid-template-rows:minmax(0,1fr) auto;gap:0;width:100vw;height:100dvh;padding:0;display:grid;position:fixed;inset:0}.answer-editor--fullscreen .answer-editor__paper{border:0;border-radius:0;grid-template-rows:auto auto minmax(0,1fr);min-height:0;display:grid}.answer-editor__fullscreen-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:0;display:grid}.answer-editor__fullscreen-pane{min-width:0;min-height:0}.answer-editor--fullscreen .markdown-code-editor,.answer-editor--fullscreen .markdown-code-editor .cm-editor,.answer-editor--fullscreen .markdown-code-editor .cm-scroller{height:100%;min-height:0}.answer-editor__preview--split{border-left:1px solid var(--faint);background:var(--surface);min-height:0;overflow:auto}.answer-editor--fullscreen .markdown-code-editor .cm-scroller,.answer-editor--fullscreen .answer-editor__preview--split{-ms-overflow-style:none;scrollbar-width:none}.answer-editor--fullscreen .markdown-code-editor .cm-scroller::-webkit-scrollbar{width:0;height:0}.answer-editor--fullscreen .answer-editor__preview--split::-webkit-scrollbar{width:0;height:0}.answer-editor--fullscreen .answer-editor__footer{border-top:1px solid var(--faint);min-height:44px;padding:0 16px}.community-list-toolbar{justify-content:space-between;align-items:center;gap:12px;min-height:30px;margin-top:2px;display:flex}.comment-login{min-height:32px;color:var(--heading);background:0 0;justify-content:flex-start;align-items:center;padding:0;font-size:12px;display:flex}.comment-login a{color:var(--ink);white-space:nowrap;font-weight:650}.comment-composer{background:var(--surface-2);border-radius:13px;gap:10px;padding:12px;display:grid}.comment-composer--compact{margin-top:12px}.comment-composer label{color:var(--heading);align-items:center;gap:8px;font-size:12px;display:flex}.comment-composer select{background:var(--surface);border-bottom:0;border-radius:7px;width:92px;min-height:30px;font-size:12px;font-weight:620}.comment-composer textarea,.comment-edit textarea{resize:vertical;width:100%;min-height:118px;color:var(--cell);background:var(--surface);border:1px solid #0000;border-radius:10px;outline:none;padding:12px 14px;line-height:1.72}.comment-composer textarea:focus,.comment-edit textarea:focus{border-color:var(--faint)}.comment-composer textarea::placeholder{color:var(--placeholder)}.comment-composer__footer{min-height:30px;color:var(--heading);justify-content:space-between;align-items:center;gap:12px;font-size:12px;display:flex}.comment-composer__footer button,.comment-edit button{min-height:30px;color:var(--solid-text);background:var(--solid-bg);border-radius:8px;align-items:center;padding:0 11px;font-size:12px;font-weight:650;display:inline-flex}.comment-composer__footer button:disabled{cursor:default;opacity:.42}.community-message,.community-empty{min-height:66px;color:var(--heading);justify-content:center;align-items:center;gap:8px;font-size:12px;display:flex}.comment-list{gap:0;display:grid}.comment-item{border-top:1px solid var(--faint);grid-template-columns:32px minmax(0,1fr);gap:12px;padding:18px 0;display:grid}.comment-item__avatar{width:32px;height:32px;color:var(--cell);background:var(--surface-3);border-radius:999px;place-items:center;font-size:12px;font-weight:720;display:grid;overflow:hidden}.comment-item__avatar--link:hover{opacity:.82}.comment-item__avatar img{object-fit:cover;width:100%;height:100%;display:block}.comment-item__main{min-width:0}.comment-item__meta{min-height:22px;color:var(--heading);flex-wrap:wrap;align-items:center;gap:7px;font-size:12px;display:flex}.comment-item__meta strong{color:var(--cell);font-size:13px;font-weight:650}.comment-author{color:var(--cell);text-decoration:none}.comment-author:hover{color:var(--ink);text-decoration:underline;-webkit-text-decoration-color:var(--underline);text-decoration-color:var(--underline);text-underline-offset:3px}.comment-author strong{color:inherit}.comment-item__meta em{color:var(--muted);background:var(--surface-2);border-radius:999px;padding:1px 6px;font-style:normal;font-weight:620}.comment-content{margin-top:8px}.markdown-content{min-width:0;color:var(--cell);line-height:1.82}.markdown-content>:first-child{margin-top:0}.markdown-content>:last-child{margin-bottom:0}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4{color:var(--ink);margin:20px 0 8px;line-height:1.38}.markdown-content h1{font-size:18px}.markdown-content h2{font-size:16px}.markdown-content h3,.markdown-content h4{font-size:14px}.markdown-content p,.markdown-content li,.markdown-content blockquote,.markdown-content table{font-size:13.5px}.markdown-content p{margin:0 0 12px}.markdown-content ul,.markdown-content ol{margin:0 0 14px;padding-left:20px}.markdown-content li+li{margin-top:4px}.markdown-content blockquote{border-left:2px solid var(--line);color:var(--muted);margin:0 0 14px;padding-left:12px}.markdown-content hr{border:0;border-top:1px solid var(--faint);margin:18px 0}.markdown-content a{color:var(--ink);text-decoration:underline;-webkit-text-decoration-color:var(--underline);text-decoration-color:var(--underline);text-underline-offset:3px}.markdown-content table{border-collapse:collapse;width:100%;margin:0 0 14px;display:block;overflow-x:auto}.markdown-content th,.markdown-content td{border:1px solid var(--faint);padding:7px 9px}.markdown-content th{color:var(--ink);background:var(--surface-2);font-weight:650}.markdown-content code{color:var(--ink);background:var(--surface-3);border-radius:5px;padding:2px 5px;font-family:ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:12px}.markdown-content pre{color:var(--code-text);background:var(--code-bg);box-shadow:inset 0 0 0 1px var(--code-line);border-radius:9px;margin:0 0 16px;padding:15px 16px;overflow:auto}.markdown-content pre code{color:inherit;background:0 0;padding:0;font-size:12.5px;line-height:1.68}.markdown-content .hljs-comment,.markdown-content .hljs-quote{color:var(--code-comment)}.markdown-content .hljs-keyword,.markdown-content .hljs-selector-tag,.markdown-content .hljs-subst{color:var(--code-keyword)}.markdown-content .hljs-number,.markdown-content .hljs-literal,.markdown-content .hljs-variable,.markdown-content .hljs-template-variable,.markdown-content .hljs-tag .hljs-attr{color:var(--code-number)}.markdown-content .hljs-string,.markdown-content .hljs-doctag{color:var(--code-string)}.markdown-content .hljs-title,.markdown-content .hljs-section,.markdown-content .hljs-selector-id{color:var(--code-title)}.markdown-content .hljs-type,.markdown-content .hljs-class .hljs-title{color:var(--code-type)}.markdown-content .hljs-tag,.markdown-content .hljs-name,.markdown-content .hljs-attribute{color:var(--code-tag)}.markdown-content .hljs-regexp,.markdown-content .hljs-link{color:var(--code-string)}.markdown-content .hljs-symbol,.markdown-content .hljs-bullet{color:var(--code-number)}.markdown-content .hljs-built_in,.markdown-content .hljs-builtin-name{color:var(--code-title)}.markdown-content .hljs-meta{color:var(--code-meta)}.markdown-content .hljs-emphasis{font-style:italic}.markdown-content .hljs-strong{font-weight:700}.comment-actions{flex-wrap:wrap;align-items:center;gap:4px;min-height:30px;margin-top:8px;display:flex}.comment-actions button{min-height:28px;color:var(--heading);border-radius:7px;align-items:center;gap:4px;padding:0 7px;font-size:12px;font-weight:560;display:inline-flex}.comment-actions button:hover,.comment-actions button[data-active=true]{color:var(--ink);background:var(--surface-2)}.comment-vote{min-width:42px}.comment-vote--down{min-width:28px}.comment-edit{gap:8px;margin-top:10px;display:grid}.comment-edit>div{justify-content:flex-end;gap:8px;display:flex}.comment-edit button:first-child{color:var(--muted);background:var(--surface-2)}.comment-replies{border-left:1px solid var(--faint);margin-top:8px;padding-left:12px;display:grid}.comment-replies .comment-item{grid-template-columns:26px minmax(0,1fr);padding:14px 0}.comment-replies .comment-item__avatar{width:26px;height:26px;font-size:11px}.question-step-nav{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:16px;min-height:30px;padding-top:2px;display:grid}.question-step-link{color:var(--heading);align-items:center;gap:5px;padding:0;font-size:12px;font-weight:560;display:inline-flex}.question-step-link:hover{color:var(--ink)}.question-step-nav>.question-step-link:nth-child(2){justify-self:center}.question-step-link--previous{justify-self:start}.question-step-link--next{justify-self:end}.question-step-link--disabled{color:var(--placeholder);cursor:default}.question-step-link--disabled:hover{color:var(--placeholder)}.notes-page{width:min(900px,100vw - 80px);padding-top:42px;padding-bottom:82px}.notes-head{justify-content:space-between;align-items:center;gap:24px;min-height:54px;display:flex}.notes-head>div{align-items:baseline;gap:8px;display:flex}.notes-head h1{color:var(--ink);margin:0;font-size:18px;font-weight:700}.notes-head span{color:var(--heading);font-size:12px;font-weight:620}.notes-head__actions{align-items:center;gap:14px;min-width:0;display:flex}.notes-head input{border:0;border-bottom:1px solid var(--line);width:min(260px,44vw);min-width:0;height:38px;color:var(--ink);background:0 0;outline:none;flex:260px}.notes-head input::placeholder{color:var(--placeholder)}.notes-head__actions button{min-height:32px;color:var(--heading);white-space:nowrap;border-radius:7px;padding:0 10px;font-size:12px;font-weight:620}.notes-head__actions button:hover{color:var(--ink);background:var(--surface-2)}.notes-list{min-height:220px;display:grid}.note-row{border-bottom:1px solid var(--faint);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;min-height:104px;padding:16px 2px;display:grid}.note-row__content{min-width:0}.note-row__title{max-width:100%;color:var(--ink);font-size:14.5px;font-weight:580;line-height:1.56;display:inline-flex}.note-row__title:hover{text-decoration:underline;-webkit-text-decoration-color:var(--underline);text-decoration-color:var(--underline);text-underline-offset:4px;text-decoration-thickness:1px}.note-row__meta{min-height:28px;color:var(--heading);align-items:center;gap:8px;font-size:12px;display:flex}.note-row p{-webkit-line-clamp:2;max-width:720px;color:var(--muted);-webkit-box-orient:vertical;margin:4px 0 0;line-height:1.7;display:-webkit-box;overflow:hidden}.empty-list,.centered-page{min-height:220px;color:var(--muted);text-align:center;place-items:center;display:grid}.centered-page{align-content:center;min-height:calc(100vh - 54px)}.centered-page h1{color:var(--ink);margin:10px 0 18px;font-size:27px;font-weight:730}.error-code{color:var(--heading);letter-spacing:.18em;margin:0;font-size:12px;font-weight:740}.text-link{color:var(--blue);font-size:13px;font-weight:620}@media (width<=860px){.page-shell,.site-header__inner{width:min(100vw - 24px,680px)}.home-shell{padding-top:24px}.catalog{width:100%}.filter-bar{grid-template-columns:minmax(0,1fr);gap:8px}.filter-actions{grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:8px;display:grid}.filter-select{background-color:var(--surface-2);border-bottom:0;border-radius:7px;flex-basis:auto;width:100%;min-height:38px}.search-field{background:var(--surface-2);border-bottom:0;border-radius:7px;min-height:38px}.question-table{overflow-x:auto}.question-table__header,.question-row{min-width:620px}.question-page{width:min(100vw - 24px,680px)}.notes-page{width:min(100vw - 24px,680px);padding-top:24px}}@media (width<=640px){.page-shell,.site-header__inner{width:min(100vw - 20px,560px)}.question-page{padding-top:22px;padding-bottom:60px}.question-card{padding:24px 20px 22px}.question-card h1{padding-right:66px;font-size:18px}.answer-section{border-radius:12px}.answer-editor--fullscreen{inset:0}.answer-editor__fullscreen-grid{grid-template-rows:minmax(0,1fr) minmax(0,1fr);grid-template-columns:1fr}.answer-editor__preview--split{border-top:1px solid var(--faint);border-left:0}.account-popover{width:min(246px,100vw - 24px);right:-2px}.answer-editor textarea{min-height:150px}.answer-editor__footer{flex-direction:column;align-items:flex-start}.notes-head{flex-direction:column;align-items:stretch;gap:8px}.notes-head input{width:100%}.notes-head__actions{gap:10px;width:100%}}