:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--font-cjk:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC";--font-sans:"DM Sans", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", var(--font-cjk), sans-serif;--font-display:var(--font-sans);--font-mono:ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", var(--font-cjk), monospace;--radius:0;--ease:cubic-bezier(.2, .7, .2, 1);--header-height:73px;--blue:#2349df;--on-blue:#fffdf7;--on-blue-muted:#fffdf7b8;--accent-yellow:#eafa64;--on-yellow:#24261f;--bg:#f3f1e9;--bg-subtle:#ebe9df;--surface:#fffdf7;--surface-2:#e8e8dc;--surface-hover:#e4e3d7;--callout-bg:#edeee4;--text:#24261f;--text-2:#33352d;--muted:#62665b;--faint:#7d8074;--border:#cecec0;--border-strong:#a9aa9b;--rule-ink:#24261f;--heading:#24261f;--accent:#2349df;--accent-hover:#24261f;--accent-soft:#e2e6f6;--accent-text:#2349df;--on-accent:#fffdf7;--success:#1e7148;--success-soft:#dfeedd;--warning:#85590a;--warning-soft:#f4ecd2;--danger:#b0302a;--danger-soft:#f4e1dc;--inverse-bg:#24261f;--inverse-text:#f3f1e9;--inverse-muted:#b3b5a8;--code-bg:#e8e8dc;--code-text:#364494;--pre-bg:#24261f;--pre-text:#f3f1e9;--header-bg:#f3f1e9;--overlay:#1e1f1b66;--focus:#2349df;--selection:#eafa64;--on-selection:#24261f;--shadow:6px 6px 0 var(--rule-ink);--shadow-sm:3px 3px 0 var(--rule-ink);--marker:#eafa649e;--ink:var(--text);--paper:var(--bg);--paper-deep:var(--surface-2);--line:var(--border);--navy:var(--heading);--navy-soft:var(--accent-text);--coral:var(--accent);--coral-soft:var(--accent-soft);--green:var(--success);--green-soft:var(--success-soft)}:root:lang(ja){--font-cjk:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", "Noto Sans JP", "Noto Sans CJK JP"}:root:lang(zh-TW){--font-cjk:"PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Noto Sans CJK TC"}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#191a15;--bg-subtle:#1f201a;--surface:#24261f;--surface-2:#2d2f27;--surface-hover:#32342b;--callout-bg:#23251e;--text:#ecebe2;--text-2:#d4d3c9;--muted:#a3a698;--faint:#878a7d;--border:#393b32;--border-strong:#5a5d50;--rule-ink:#ecebe2;--heading:#f3f1e9;--accent:#3456f0;--accent-hover:#4e6df5;--accent-soft:#546eff29;--accent-text:#98aaff;--on-accent:#fff;--success:#6fcf9b;--success-soft:#6fcf9b24;--warning:#e3b85a;--warning-soft:#e3b85a24;--danger:#f0857a;--danger-soft:#f0857a24;--inverse-bg:#0f100c;--inverse-text:#ecebe2;--inverse-muted:#a3a698;--code-bg:#2d2f27;--code-text:#b5c1ff;--pre-bg:#0f100c;--pre-text:#ecebe2;--header-bg:#191a15;--overlay:#0009;--focus:#98aaff;--marker:#eafa6433}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#191a15;--bg-subtle:#1f201a;--surface:#24261f;--surface-2:#2d2f27;--surface-hover:#32342b;--callout-bg:#23251e;--text:#ecebe2;--text-2:#d4d3c9;--muted:#a3a698;--faint:#878a7d;--border:#393b32;--border-strong:#5a5d50;--rule-ink:#ecebe2;--heading:#f3f1e9;--accent:#3456f0;--accent-hover:#4e6df5;--accent-soft:#546eff29;--accent-text:#98aaff;--on-accent:#fff;--success:#6fcf9b;--success-soft:#6fcf9b24;--warning:#e3b85a;--warning-soft:#e3b85a24;--danger:#f0857a;--danger-soft:#f0857a24;--inverse-bg:#0f100c;--inverse-text:#ecebe2;--inverse-muted:#a3a698;--code-bg:#2d2f27;--code-text:#b5c1ff;--pre-bg:#0f100c;--pre-text:#ecebe2;--header-bg:#191a15;--overlay:#0009;--focus:#98aaff;--marker:#eafa6433}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 24px);-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font:400 16px/1.7 var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0}button,input,select,textarea{font:inherit}button{color:inherit;border-radius:0}a{color:inherit;text-decoration:none}h1,h2,h3,h4{font-family:var(--font-display);text-wrap:balance;margin-top:0;font-weight:750;line-height:1.3}p{margin-top:0}p,li{text-wrap:pretty}h1,h2,h3,h4,.lesson-link strong,.module-name,.lesson-footer strong,.brand strong{word-break:keep-all;overflow-wrap:anywhere}a:focus-visible{outline:2px solid var(--focus);outline-offset:4px}button:focus-visible{outline:2px solid var(--focus);outline-offset:4px}input:focus-visible{outline:2px solid var(--focus);outline-offset:4px}select:focus-visible{outline:2px solid var(--focus);outline-offset:4px}textarea:focus-visible{outline:2px solid var(--focus);outline-offset:4px}summary:focus-visible{outline:2px solid var(--focus);outline-offset:4px}[tabindex]:focus-visible{outline:2px solid var(--focus);outline-offset:4px}::selection{background:var(--selection);color:var(--on-selection)}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.skip{z-index:100;background:var(--accent-yellow);color:var(--on-yellow);padding:10px 20px;position:fixed;top:-100px;left:18px}.skip:focus{top:12px}.shell{width:100%;max-width:1388px;margin:0 auto;padding:0 54px}.muted{color:var(--muted)}.title-unit{white-space:nowrap;display:inline-block}.wordmark{letter-spacing:-.083em;text-transform:lowercase;white-space:nowrap;font-family:DM Sans,Arial,sans-serif;font-weight:1000;line-height:.83;display:inline-block}.wordmark-dot{background:var(--text);color:#0000;vertical-align:baseline;width:.155em;height:.155em;margin-left:.06em;display:inline-block;overflow:hidden}.brand-mark{background:var(--blue);width:25px;height:25px;color:var(--on-blue);letter-spacing:-.11em;flex:none;padding-left:4px;font:900 27px/20px DM Sans,Arial,sans-serif;overflow:hidden}.brand-name{text-transform:lowercase}.micro{font:10px/1.7 var(--font-mono);letter-spacing:.12em;text-transform:uppercase}.eyebrow{color:var(--accent-text);font:11px/1.6 var(--font-mono);letter-spacing:.09em;text-transform:uppercase;align-items:center;gap:13px;margin-bottom:25px;display:flex}.eyebrow:before{content:"";background:currentColor;flex:none;width:22px;height:2px;display:block}.badge{color:var(--accent-text);font:10px/1.7 var(--font-sans);white-space:nowrap;border:1px solid;align-items:center;padding:1px 6px;display:inline-flex}.article-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:11px;margin-bottom:20px;font-size:12px;display:flex}.solid-link,.button-primary{background:var(--accent);min-height:49px;color:var(--on-accent);cursor:pointer;transition:background .18s var(--ease), transform .18s var(--ease);border:0;justify-content:space-between;align-items:center;gap:32px;padding:12px 19px;font-size:14px;font-weight:600;line-height:1.6;display:inline-flex}.solid-link:hover,.button-primary:hover{background:var(--accent-hover);transform:translateY(-2px)}.solid-link .arrow,.button-primary .arrow{font-size:19px;line-height:1}.button-primary{justify-content:center;gap:14px}.button-secondary,.outline-button{border:1px solid var(--rule-ink);min-height:44px;color:var(--text);cursor:pointer;transition:color .16s var(--ease), border-color .16s var(--ease);background:0 0;justify-content:center;align-items:center;gap:12px;padding:9px 16px;font-size:13px;font-weight:600;display:inline-flex}.button-secondary:hover,.outline-button:hover{border-color:var(--accent-text);color:var(--accent-text)}.button-large{min-height:52px;font-size:15px}.button-primary:disabled,.button-secondary:disabled,.solid-link:disabled{opacity:.5;cursor:not-allowed;transform:none}.text-link{border-bottom:1px solid var(--rule-ink);white-space:nowrap;transition:color .18s var(--ease), border-color .18s var(--ease);align-items:center;gap:26px;padding-bottom:5px;font-size:13px;font-weight:650;display:inline-flex}.form-error,.form-success{margin:10px 0 0;font-size:14px;line-height:1.6}.form-error{color:var(--danger)}.form-success{color:var(--success)}.site-header{z-index:30;height:var(--header-height);border-bottom:1px solid var(--border);background:var(--header-bg);position:sticky;top:0}.header-inner{align-items:center;gap:28px;height:100%;display:flex}.site-header .brand{letter-spacing:-.055em;align-items:center;gap:11px;font-size:21px;font-weight:850;display:flex}.site-meta{min-width:0;color:var(--muted);letter-spacing:.04em;white-space:nowrap;text-overflow:ellipsis;margin-right:auto;padding-left:22px;font-size:11px;overflow:hidden}.nav{align-items:center;gap:31px;font-size:13px;display:flex}.nav a{align-items:center;min-height:44px;display:inline-flex;position:relative}.nav a:hover,.nav a[aria-current=page]{color:var(--accent-text)}.nav a[aria-current=page]:after{content:"";background:var(--accent);width:5px;height:5px;position:absolute;bottom:2px;left:calc(50% - 2px)}.site-menu{align-items:center;gap:12px;display:flex}.site-menu-button,.site-menu-backdrop{display:none}.language-switcher select{border:0;border-bottom:1px solid var(--border);height:34px;color:var(--text);-webkit-appearance:none;appearance:none;cursor:pointer;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='none' stroke='%2362665b' stroke-width='1.6'%3E%3Cpath d='M1 3l4 4 4-4'/%3E%3C/svg%3E") right 4px center no-repeat,0 0;padding:0 26px 0 0;font-size:12px}.theme-toggle{width:34px;height:34px;color:var(--text);cursor:pointer;background:0 0;border:0;place-items:center;display:inline-grid}.language-switcher select:hover,.theme-toggle:hover{color:var(--accent-text)}.site-account{border-bottom:1px solid var(--rule-ink);white-space:nowrap;align-items:center;gap:8px;min-height:34px;padding:0 0 2px;font-size:13px;display:inline-flex}.auth-page{place-items:center;min-height:58vh;padding:56px 0;display:grid}.auth-card{border:1px solid var(--rule-ink);background:var(--surface);width:min(100%,460px);box-shadow:8px 8px 0 var(--accent-yellow);padding:32px 30px 30px}.auth-card h1{letter-spacing:-.04em;margin-bottom:12px;font-size:28px;line-height:1.35}.auth-card>p{color:var(--muted);margin:0 0 26px;font-size:14px;line-height:1.85}.auth-form{gap:10px;display:grid}.auth-form label{font-size:12px;font-weight:650}.auth-form input,.redeem-form input,.adm-shell input,.adm-shell select,.adm-shell textarea{border:1px solid var(--border-strong);background:var(--bg);width:100%;min-height:46px;color:var(--text);transition:border-color .16s var(--ease);padding:0 12px;font-size:15px}.auth-form input:focus,.redeem-form input:focus{border-color:var(--accent)}.auth-form input[inputmode=numeric]{font:500 22px/1 var(--font-mono);letter-spacing:.32em}.auth-form .button-primary{margin-top:8px}.auth-sent{color:var(--muted);margin:0 0 6px;font-size:13px;line-height:1.7}.auth-links{justify-content:space-between;margin-top:4px;display:flex}.auth-links button{min-height:44px;color:var(--accent-text);cursor:pointer;background:0 0;border:0;padding:0;font-size:13px}.auth-links button:hover{text-underline-offset:4px;text-decoration:underline}@font-face{font-family:DM Sans;font-style:normal;font-display:swap;font-weight:100 1000;src:url(/fonts/dm-sans-latin-ext-wght-normal.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:DM Sans;font-style:normal;font-display:swap;font-weight:100 1000;src:url(/fonts/dm-sans-latin-wght-normal.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}.site-header .brand{white-space:nowrap;min-width:0}.site-header .brand-name{text-overflow:ellipsis;overflow:hidden}.nav a{white-space:nowrap}@media (max-width:600px){.shell{padding:0 20px}.site-header{height:56px}.site-header .brand{gap:9px;font-size:18px}.site-header .header-inner{gap:12px}.site-meta{display:none}.nav{gap:14px;font-size:13px}.theme-toggle{margin-right:-8px}}@media (max-width:360px){.shell{padding:0 16px}}.site-header .brand{margin-right:auto}.site-header .header-inner{gap:16px}.page{padding-top:36px;padding-bottom:72px}.page-title{letter-spacing:-.04em;margin:0 0 8px;font-size:34px}.page-lede{color:var(--muted);margin:0 0 24px;font-size:14px}.panel{border:1px solid var(--border);background:var(--surface);margin-bottom:20px;padding:20px 18px}.panel h2{letter-spacing:-.03em;margin:0 0 14px;font-size:19px}.panel-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.panel-head h2{margin:0}.hint{color:var(--muted);margin:12px 0 0;font-size:12px;line-height:1.7}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.small-button{white-space:nowrap;gap:6px!important;min-height:32px!important;padding:4px 10px!important;font-size:12px!important}.link-button{color:var(--accent-text);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0;font-size:13px;text-decoration:underline}.notice{border:1px solid var(--rule-ink);background:var(--accent-yellow);color:var(--on-yellow);margin:12px 0 0;padding:10px 12px;font-size:14px}.notice.warn{border-color:var(--warning);background:var(--warning-soft);color:var(--text)}.nw{white-space:nowrap}code{font:12px/1.5 var(--font-mono)}.inline-form{flex-wrap:wrap;align-items:flex-end;gap:10px;display:flex}.inline-form label,.form-grid label{gap:4px;font-size:12px;font-weight:650;display:grid}.inline-form input,.inline-form select,.form-grid input,.form-grid select,.form-grid textarea{border:1px solid var(--border-strong);background:var(--bg);min-height:40px;color:var(--text);padding:0 10px;font-size:14px}.form-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;display:grid}.form-grid .wide{grid-column:1/-1}.form-grid textarea{min-height:220px;font:13px/1.6 var(--font-mono);resize:vertical;padding:10px}.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus,.inline-form input:focus{border-color:var(--accent);outline:none}.check{align-items:center;min-height:40px;grid-template-columns:none!important;gap:8px!important;font-size:14px!important;font-weight:400!important;display:flex!important}.check input{width:18px;height:18px;min-height:0!important}.output{border:1px solid var(--border);background:var(--bg);font:13px/1.6 var(--font-mono);white-space:pre-wrap;word-break:break-word;margin:12px 0 0;padding:12px}.table-wrap{overflow-x:auto}.table{border-collapse:collapse;width:100%;font-size:13px}.table th{background:var(--inverse-bg);color:var(--inverse-text);text-align:left;white-space:nowrap;padding:9px 10px;font-weight:600}.table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:10px}.table tr:hover td{background:var(--surface-hover)}.mini-meter{border:1px solid var(--rule-ink);background:var(--bg);width:96px;height:8px}.mini-meter>span{background:var(--accent);height:100%;display:block}.mini-meter.full>span{background:var(--danger)}.mini-meter.warn>span{background:var(--warning)}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px 24px;margin:0 0 24px;display:grid}.stat-grid dt{color:var(--muted);font-size:13px}.stat-grid dd{letter-spacing:-.03em;margin:4px 0 0;font-size:28px;font-weight:850;line-height:1.1}.stat-grid dd small{color:var(--muted);letter-spacing:0;margin-left:4px;font-size:13px;font-weight:600}.dot{background:var(--success);width:8px;height:8px;margin-right:6px;display:inline-block}.dot.bad{background:var(--danger)}.dot.warn{background:var(--warning)}.dot.unknown{background:var(--faint)}.hourly-chart{grid-template-rows:200px 24px;grid-template-columns:52px minmax(0,1fr);display:grid}.hourly-y{color:var(--muted);font-variant-numeric:tabular-nums;text-align:right;flex-direction:column;justify-content:space-between;margin:-7px 0;padding-right:8px;font-size:11px;line-height:14px;display:flex}.hourly-plot{touch-action:pan-y;align-items:stretch;display:flex;position:relative}.hourly-plot:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.hourly-grid{background:var(--border);pointer-events:none;height:1px;position:absolute;left:0;right:0}.hourly-column{flex:1 1 0;align-items:flex-end;min-width:0;padding:0 1px;display:flex;position:relative}.hourly-column.active{background:var(--surface-hover)}.hourly-column>span{background:var(--accent);width:100%;display:block;position:relative}.hourly-tooltip{z-index:1;background:var(--inverse-bg);color:var(--inverse-text);white-space:nowrap;pointer-events:none;gap:2px;padding:6px 10px;font-size:12px;display:grid;position:absolute;top:4px}.hourly-tooltip[data-side=middle]{transform:translate(-50%)}.hourly-tooltip[data-side=end]{transform:translate(-100%)}.hourly-tooltip strong{font-size:14px}.hourly-x{color:var(--muted);font-variant-numeric:tabular-nums;grid-column:2;font-size:11px;line-height:24px;position:relative}.hourly-x span{white-space:nowrap;position:absolute;transform:translate(-50%)}.hourly-data{color:var(--muted);margin-top:12px;font-size:13px}.hourly-data summary{cursor:pointer;min-height:32px}.hourly-data .table-wrap{max-height:280px;color:var(--text);margin-top:10px;overflow-y:auto}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}.button-primary:hover,.solid-link:hover{transform:none}}.auth-page{align-content:start;justify-items:center;min-height:58vh;padding:48px 0 56px;display:grid}.auth-page .auth-card{width:min(100%,460px)}@media (max-width:600px){.auth-page{padding:28px 8px 40px 0}.auth-card{padding:26px 20px 24px}.auth-card h1{font-size:26px}}.auth-form input.invite{font:500 17px/1 var(--font-mono);letter-spacing:.12em;text-transform:uppercase}.auth-form .button-primary{justify-content:space-between}.auth-fixed{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;min-height:40px;font-size:15px;display:flex}.auth-fixed button{min-height:44px;color:var(--accent-text);cursor:pointer;background:0 0;border:0;padding:0;font-size:13px}.auth-hint{border-left:2px solid var(--warning);background:var(--warning-soft);margin:2px 0 4px;padding:10px 12px;font-size:13px;line-height:1.6}.auth-links button:disabled{color:var(--faint);cursor:default;text-decoration:none}@media (max-width:600px){.hourly-x .h6{display:none}}.app{background:var(--bg);flex-direction:column;max-width:560px;height:100dvh;margin:0 auto;display:flex}@media (min-width:600px){.app{border-left:1px solid var(--border);border-right:1px solid var(--border)}}.app-head{border-bottom:1px solid var(--border);background:var(--header-bg);flex:none;align-items:center;gap:12px;height:56px;padding:0 20px;display:flex}.app-head .brand{margin-right:auto}.session{flex:1;align-items:center;gap:5px;min-width:0;display:flex}.session i{background:var(--accent);flex:none;width:8px;height:8px}.session i.x{background:var(--danger)}.session-more,.session-min{font:12px/1 var(--font-mono);color:var(--muted);letter-spacing:.04em;white-space:nowrap}.session-more{margin-right:3px}.app-main{-webkit-overflow-scrolling:touch;flex:1;padding:22px 20px 20px;overflow-y:auto}.dock{border-top:1px solid var(--border);background:var(--bg);flex:none;align-items:center;gap:10px;padding:12px 20px;display:flex}.dock .button-secondary{flex:0 0 96px;min-height:52px}.dock .button-primary{flex:1;justify-content:space-between;min-height:52px;font-size:15px}.dock .flag{color:var(--muted);flex:none;font-size:12px}.tabs{border-top:1px solid var(--border);background:var(--bg);padding-bottom:env(safe-area-inset-bottom);flex:none;display:flex}.tabs a{height:58px;color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;font-size:12px;text-decoration:none;display:flex;position:relative}.tabs a svg{width:21px;height:21px}.tabs a[aria-current=page]{color:var(--accent-text);font-weight:650}.tabs a[aria-current=page]:after{content:"";background:var(--accent);width:5px;height:5px;position:absolute;bottom:5px;left:calc(50% - 2.5px)}@media (max-width:360px){.app-head,.app-main,.dock{padding-left:16px;padding-right:16px}}.tagrow{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;display:flex}.tagrow .eyebrow{margin:0}.badge.own{background:var(--accent-yellow);color:var(--on-yellow);border-color:var(--accent-yellow)}.badge.re{color:var(--danger);border-color:var(--danger)}.q{letter-spacing:-.02em;margin:0 0 6px;font-size:22px;font-weight:750;line-height:1.45}.q-sub{color:var(--muted);margin:0 0 16px;font-size:14px}.center{text-align:center}.right{text-align:right;margin:8px 0 0}.small{font-size:13px}.word-row{gap:14px;margin:6px 0 2px}.big{letter-spacing:-.04em;font-size:34px;font-weight:750;line-height:1.1}.ph{color:var(--muted);font:14px var(--font-mono);margin:0 0 18px}.opts{gap:10px;display:grid}.opt{border:1px solid var(--border-strong);background:var(--surface);min-height:52px;color:var(--text);text-align:left;cursor:pointer;transition:background .16s var(--ease);padding:12px 14px;font-size:17px}.opt:active,.opt.sel{background:var(--surface-hover)}.opt.sel{border-color:var(--accent)}.opt.ok{border-color:var(--success);background:var(--success-soft)}.opt.no{border-color:var(--danger);background:var(--danger-soft)}.pair{margin-bottom:16px}.pair-s{margin:0 0 8px;font-size:17px;line-height:1.55}.pair .row .opt{text-align:center;flex:1}.toks{flex-wrap:wrap;gap:8px;margin:4px 0 6px;display:flex}.tok{border:1px solid var(--border-strong);background:var(--surface);min-height:44px;color:var(--text);cursor:pointer;padding:8px 13px;font-size:18px}.tok.ok{border-color:var(--success);background:var(--success-soft)}.tok.no{border-color:var(--danger);background:var(--danger-soft);text-decoration:line-through;-webkit-text-decoration-color:var(--danger);text-decoration-color:var(--danger)}.tok.p{background:0 0;border:0;margin-left:-6px;padding:8px 0;font-size:18px}.pic{object-fit:contain;border:1px solid var(--border);background:var(--surface);width:100%;max-height:220px;margin-bottom:16px;display:block}.play{background:var(--blue);width:72px;height:72px;color:var(--on-blue);box-shadow:3px 3px 0 var(--rule-ink);cursor:pointer;transition:box-shadow .16s var(--ease);border:0;place-items:center;margin:18px auto 10px;display:grid}.play.on{box-shadow:5px 5px 0 var(--accent-yellow)}.play:disabled{opacity:.35;cursor:default}.play svg{width:28px;height:28px}.play.sm{width:34px;height:34px;box-shadow:2px 2px 0 var(--rule-ink);margin:0}.play.sm svg{width:14px;height:14px}.replays{text-align:center;font:11px/1.6 var(--font-mono);letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin:0 0 18px}.inp{border:1px solid var(--border-strong);background:var(--bg);width:100%;min-height:46px;color:var(--text);border-radius:0;outline:none;padding:10px 12px;font-size:17px}.inp:focus{border-color:var(--accent)}textarea.inp{resize:none;min-height:96px;font-family:inherit;line-height:1.55}.rec{background:var(--danger);color:#fff;width:112px;height:112px;box-shadow:3px 3px 0 var(--rule-ink);cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:none;-webkit-touch-callout:none;border:0;place-items:center;margin:26px auto 12px;font-size:15px;font-weight:650;display:grid}.rec.on{box-shadow:8px 8px 0 var(--accent-yellow)}.fb{border:1px solid var(--rule-ink);background:var(--surface);box-shadow:var(--shadow-sm);animation:fb-up .18s var(--ease);margin-top:20px;padding:15px 16px 14px}@keyframes fb-up{0%{opacity:0;transform:translateY(6px)}}.fb .verdict{letter-spacing:-.02em;margin-bottom:6px;font-size:18px;font-weight:750}.fb .verdict.ok{color:var(--success)}.fb .verdict.no{color:var(--danger)}.fb p{margin:6px 0;font-size:15px;line-height:1.65}.fb .next{border-top:1px solid var(--border);font:11px/1.6 var(--font-mono);letter-spacing:.06em;color:var(--muted);text-transform:uppercase;margin-top:12px;padding-top:10px}.wcard{border-top:1px solid var(--border);gap:12px;margin-top:12px;padding-top:12px;font-size:14px;line-height:1.6;display:flex}.wcard img{object-fit:cover;border:1px solid var(--border);background:var(--bg);flex:none;width:80px;height:80px}.wcard b{letter-spacing:-.02em;font-size:17px}.wcard .row{gap:10px;margin-bottom:4px}.wcard .ph{margin:0}.wcard .ex{color:var(--text-2);margin-top:4px}.diff{font-size:16px;line-height:1.9}.w-miss{color:var(--danger);text-underline-offset:3px;text-decoration:underline}.w-typo{color:var(--warning);text-underline-offset:3px;-webkit-text-decoration:underline wavy;text-decoration:underline wavy}.w-extra{color:var(--faint);text-decoration:line-through}.empty{text-align:center;padding:48px 4px;font-size:16px}.app-page{flex:1;overflow-y:auto}.app-page .page{padding-top:24px}.sec{border-top:1px solid var(--rule-ink);padding:16px 0 18px}.sec:first-of-type{border-top:0;padding-top:0}.sec .eyebrow{margin-bottom:12px}.stat{letter-spacing:-.05em;font-size:40px;font-weight:750;line-height:1}.stat small{letter-spacing:-.01em;color:var(--muted);margin:0 6px 0 2px;font-size:16px;font-weight:600}.bars{align-items:flex-end;gap:8px;height:74px;margin-top:16px;display:flex}.bars div{height:100%;font:10px var(--font-mono);color:var(--muted);flex-direction:column;flex:1;justify-content:flex-end;align-items:center;display:flex}.bars span{background:var(--accent);width:100%;min-height:2px;margin-bottom:5px}.bars .today span{background:var(--accent-yellow);outline:1px solid var(--rule-ink)}.kv{grid-template-columns:44px 1fr auto;align-items:center;gap:12px;padding:7px 0;font-size:15px;display:grid}.kv .bar{background:var(--surface-2);height:6px}.kv .bar i{background:var(--accent);height:100%;display:block}.kv b{font:600 14px var(--font-mono)}.prog{margin:0;padding:0;font-size:15px;list-style:none}.prog li{gap:10px;padding:6px 0;display:flex}.prog li:before{content:"";background:var(--success);flex:none;width:8px;height:8px;margin-top:9px}.prog li.w:before{background:var(--warning)}.rows{margin:0;padding:0;list-style:none}.rows li{border-bottom:1px solid var(--border);align-items:center;gap:14px;padding:14px 0;display:flex}.rows .t{flex:1;min-width:0}.rows .t strong{font-size:15px;font-weight:650;display:block}.rows .t small{color:var(--muted);font-size:12px}.acct{color:var(--muted);justify-content:space-between;align-items:center;gap:12px;font-size:14px;display:flex}.acct-act{align-items:center;gap:16px;display:flex}.credit{color:var(--faint);margin-top:20px;font-size:12px;line-height:1.7}.seg{flex-wrap:wrap;align-items:baseline;gap:18px;margin-bottom:18px;display:flex}.seg a{color:var(--muted);border-bottom:2px solid #0000;padding-bottom:4px;font-size:17px;font-weight:650;text-decoration:none}.seg a[aria-current=page]{color:var(--text);border-bottom-color:var(--accent)}.seg-later{color:var(--faint);margin-left:auto;font-size:12px}.lib-row{width:100%;color:inherit;align-items:center;gap:14px;text-decoration:none;display:flex}.rows li:has(.lib-row){padding:0}.rows .lib-row{padding:14px 0}.lib-go{color:var(--accent-text);font-size:13px;font-weight:650}.lib-mark{border:1.5px solid var(--border-strong);flex:none;width:12px;height:12px}.lib-mark.half{box-shadow:inset 5px 0 0 var(--accent);border-color:var(--accent)}.lib-mark.done{background:var(--success);border-color:var(--success)}.lib-title{letter-spacing:-.02em;margin:0 0 10px;font-size:22px;font-weight:750;line-height:1.3}.lib-steps{flex-wrap:wrap;gap:6px;margin-bottom:18px;display:flex}.lib-steps span{font:11px/1 var(--font-mono);border:1px solid var(--border);color:var(--muted);padding:5px 7px}.lib-steps .cur{border-color:var(--accent);color:var(--accent-text);font-weight:650}.lib-steps .done{background:var(--surface-2);color:var(--faint)}.lib-audio{width:100%;margin:4px 0 8px;display:block}.lib-text{margin:8px 0 18px;font-size:16px;line-height:1.7}.lib-text p{margin:0 0 10px}.lib-text p.li{padding-left:14px;position:relative}.lib-text p.li:before{content:"";background:var(--muted);width:5px;height:5px;position:absolute;top:.7em;left:2px}.lib-text h3{margin:16px 0 6px;font-size:16px;font-weight:700}.lib-mat{border:1px solid var(--border);background:var(--surface);margin-bottom:18px;padding:10px 12px 2px}.lib-mat summary,.lib-end summary{cursor:pointer;color:var(--accent-text);margin-bottom:8px;font-size:13px}.lib-instr{margin-top:6px}.lib-q{border-top:1px solid var(--border);padding:12px 0 14px}.lib-qs{margin:0 0 10px;font-size:17px;line-height:1.6}.opts-row{grid-template-columns:repeat(auto-fit,minmax(90px,1fr))}.opts-row .opt{text-align:center}.lib-inp{width:9em;min-height:36px;margin:0 4px;padding:4px 8px;font-size:16px;display:inline-block}.lib-inp.ok{border-color:var(--success);background:var(--success-soft)}.lib-inp.no{border-color:var(--danger);background:var(--danger-soft)}.lib-ans{color:var(--muted);margin:0;font-size:14px}.lib-score{color:var(--danger);margin:12px 0 0;font-weight:650}.lib-score.ok{color:var(--success)}.lib-end .verdict{color:var(--success);margin:8px 0;font-size:24px;font-weight:750}.lib-end details{margin-top:16px}.lib-review{margin-top:16px;font-size:13px}.prod-card{border:1px solid var(--border-strong);background:var(--surface);margin:0 0 14px;padding:12px 14px 4px;font-size:16px;line-height:1.6}.prod-card p{margin:0 0 8px}.prod-card p.li{padding-left:14px;position:relative}.prod-card p.li:before{content:"";background:var(--muted);width:5px;height:5px;position:absolute;top:.7em;left:2px}.prod-label{font:11px/1.4 var(--font-mono);color:var(--accent-text);text-transform:none}.prod-write{resize:vertical;min-height:46vh;font-size:16px;line-height:1.6;display:block}.prod-count{text-align:right;font:12px/1 var(--font-mono);color:var(--muted);margin:6px 0 0}.prod-count.ok{color:var(--success)}.prod-sub{margin:18px 0 6px;font-size:13px;font-weight:700}.prod-model,.prod-mine{white-space:pre-wrap;font-size:16px;line-height:1.7}.prod-mine{color:var(--muted)}.prod-model mark{background:var(--accent-yellow);color:#14130f;padding:0 1px}.prod-model mark sup{color:#2349df}.prod-model sup{font:10px var(--font-mono);color:var(--accent-text);margin-left:1px}.prod-notes{margin:10px 0 14px;padding-left:22px;font-size:14px;line-height:1.6}.prod-notes li{margin-bottom:6px}.prod-tag{font:11px/1 var(--font-mono);border:1px solid var(--border-strong);margin-right:6px;padding:2px 4px}.prod-check{border:1px solid var(--accent);margin:0 0 16px;padding:10px 14px;font-size:15px;line-height:1.6}.prod-check p{margin:0 0 6px}.prod-check ul{margin:0 0 8px;padding-left:18px}.prod-band b{font-size:22px}.prod-good{color:var(--success)}.prod-issues li{margin-bottom:6px}.prod-issues s{color:var(--danger)}.prod-issues small{color:var(--muted);display:block}.prod-timer{margin:4px 0 8px}.prod-clock{font:700 34px/1 var(--font-mono);margin:8px 0 12px}.prod-clock.end{color:var(--accent-text);font-size:18px}.prod-phrases{margin:0 0 12px;padding:0;list-style:none}.prod-phrases li{border-top:1px solid var(--border);padding:6px 0}.prod-phrases small{color:var(--muted);display:block}.wc{text-align:center}.wc .pic{max-height:260px}.wc-word{margin:6px 0 2px}.wc-say{color:var(--text);letter-spacing:-.02em;cursor:pointer;background:0 0;border:0;padding:0;font-size:34px;font-weight:750}.wc-ph{color:var(--muted);margin:0 0 18px;font-size:15px}.wc-open{margin-top:8px}.wc-back{text-align:left;border-top:1px solid var(--border);padding-top:12px;font-size:16px;line-height:1.6}.wc-back p{margin:0 0 8px}.wc-ex{color:var(--text-2)}