:root{--paper:#f4f0e7;--surface:#fbf9f4;--surface-deep:#ece6d8;--surface-hover:#f7f3ea;--ink:#1d1d1b;--ink-strong:#141412;--ink-muted:#5c5850;--ink-faint:#8e887e;--rule:#ddd6c8;--rule-strong:#b8af9e;--vermilion:#b43a2f;--vermilion-deep:#8e2b21;--vermilion-wash:#f7e6e3;--vermilion-glow:#b43a2f1f;--slate:#556c78;--slate-deep:#3e535e;--slate-wash:#e5ecef;--ok:#3a6f4e;--ok-wash:#e5f0e8;--warn:#995c18;--warn-wash:#f7ede0;--err:#a02b20;--err-wash:#fbeae8;--font-serif:"Hist Serif", "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;--font-sans:"Hist Sans", "Source Han Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;--font-mono:"JetBrains Mono", "SF Mono", "Menlo", ui-monospace, monospace;--text-2xs:10px;--text-xs:12px;--text-sm:13px;--text-base:16px;--text-md:18px;--text-lg:22px;--text-xl:26px;--text-2xl:32px;--text-3xl:40px;--leading-tight:1.25;--leading-snug:1.45;--leading-normal:1.6;--leading-body:1.75;--leading-loose:1.9;--tracking-tight:-.01em;--tracking-normal:0em;--tracking-wide:.06em;--tracking-wider:.14em;--tracking-widest:.28em;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:32px;--space-8:48px;--space-9:64px;--page-x:20px;--radius-sm:2px;--radius-md:6px;--radius-lg:10px;--hairline:1px;--shadow-subtle:0 1px 2px #1d1d1b0a;--shadow-card:0 1px 3px #1d1d1b0d, 0 4px 16px #1d1d1b0a;--shadow-float:0 4px 12px #1d1d1b14, 0 12px 36px #1d1d1b1a;--dur-fast:.12s;--dur-base:.22s;--dur-slow:.42s;--ease-editorial:cubic-bezier(.22, 1, .36, 1);--content-max:560px;--safe-bottom:env(safe-area-inset-bottom,0px);--safe-top:env(safe-area-inset-top,0px);--safe-left:env(safe-area-inset-left,0px);--safe-right:env(safe-area-inset-right,0px)}@media (prefers-reduced-motion:reduce){:root{--dur-fast:0s;--dur-base:0s;--dur-slow:0s}}
*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-moz-text-size-adjust:100%;text-size-adjust:100%;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:16px;line-height:var(--leading-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility}body{background:var(--paper);min-height:100dvh;color:var(--ink);position:relative;overflow-x:hidden}body:before{content:"";pointer-events:none;background:linear-gradient(to right, var(--rule) var(--hairline), transparent var(--hairline)) 20px top / calc(100% - 40px) 100% no-repeat, linear-gradient(to right, transparent calc(100% - var(--hairline)), var(--rule) var(--hairline)) 20px top / calc(100% - 40px) 100% no-repeat;opacity:.15;z-index:0;position:fixed;inset:0}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);color:var(--ink-strong);font-weight:600;line-height:var(--leading-tight);letter-spacing:var(--tracking-wide);text-wrap:balance}p,li,dd,dt{text-align:left;word-break:break-word}a{color:var(--slate);border-bottom:var(--hairline) solid transparent;transition:border-color var(--dur-fast) var(--ease-editorial), color var(--dur-fast);text-decoration:none}a:hover{color:var(--ink-strong);border-bottom-color:var(--slate)}button{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;cursor:pointer;touch-action:manipulation;background:0 0;border:none}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}::selection{background:var(--vermilion-wash);color:var(--ink-strong)}:focus-visible{outline:2px solid var(--vermilion);outline-offset:2px}.ui-page-container{width:100%;max-width:var(--content-max);padding:calc(var(--safe-top) + var(--space-4)) var(--page-x) calc(var(--safe-bottom) + var(--space-8));z-index:1;margin:0 auto;position:relative}.ui-kicker{font-family:var(--font-mono);font-size:var(--text-2xs);letter-spacing:var(--tracking-widest);color:var(--ink-faint);text-transform:uppercase}.ui-rule{border:0;border-top:var(--hairline) solid var(--rule);margin:var(--space-6) 0}.ui-rule--dashed{border:0;border-top:var(--hairline) dashed var(--rule-strong);margin:var(--space-5) 0}.ui-tag{font-size:var(--text-xs);color:var(--ink-muted);border:var(--hairline) solid var(--rule-strong);border-radius:var(--radius-sm);background:var(--surface);white-space:nowrap;align-items:center;gap:4px;padding:2px 8px;line-height:1.4;display:inline-flex}.ui-tag--vermilion{color:var(--vermilion);border-color:color-mix(in srgb, var(--vermilion) 35%, var(--rule-strong));background:var(--vermilion-wash)}.ui-tag--slate{color:var(--slate);border-color:color-mix(in srgb, var(--slate) 35%, var(--rule-strong));background:var(--slate-wash)}
@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.loading{padding:var(--space-8) 0;text-align:center;color:var(--ink-faint);font-size:var(--text-sm);letter-spacing:var(--tracking-wider)}.opt{width:100%;display:block}.q-stem{font-family:var(--font-serif)}.test-progress__fill{background:var(--vermilion)}