.navbar{position:fixed;inset:0 0 auto;z-index:1000;background:var(--navbar-bg);border-bottom:1px solid var(--c-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.skip-link{position:absolute;left:var(--s-4);top:-80px;z-index:1002;padding:10px var(--s-4);background:var(--c-ink);color:var(--c-canvas);border-radius:var(--r-md);text-decoration:none}.skip-link:focus{top:12px}.nav-container{width:min(100% - 40px,var(--container));height:var(--nav-height);margin-inline:auto;display:flex;align-items:center;justify-content:space-between;gap:var(--s-6)}.logo-link{min-height:44px;display:inline-flex;align-items:center;gap:var(--s-3);color:var(--c-ink);text-decoration:none}.logo-mark{height:30px;display:grid;place-items:center;padding:0 var(--s-2);border:1px solid var(--c-border-strong);border-radius:var(--r-sm);color:var(--c-ink-soft);font-family:var(--font-mono);font-size:var(--t-xs);font-weight:500}.logo-link:hover .logo-mark{border-color:var(--c-accent);color:var(--c-accent)}.logo-copy{display:grid;gap:1px}.logo-text{color:var(--c-ink);font-size:.9375rem;font-weight:600;letter-spacing:-.012em;line-height:1.2}.logo-subtitle{color:var(--c-ink-faint);font-family:var(--font-mono);font-size:var(--t-xs);line-height:1.2}.nav-menu{display:flex;align-items:center;gap:var(--s-1)}.nav-link{min-height:38px;display:inline-flex;align-items:center;padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);color:var(--c-ink-soft);font-size:.9375rem;font-weight:500;text-decoration:none;transition:color var(--d-fast) var(--ease),background var(--d-fast) var(--ease)}.nav-link:hover{background:var(--c-surface-sunk);color:var(--c-ink)}.nav-link.active{color:var(--c-ink);font-weight:600;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.35em;text-decoration-color:var(--c-accent)}.nav-actions{display:flex;align-items:center;gap:var(--s-2)}.theme-btn{min-width:44px;height:36px;display:grid;place-items:center;padding:0 var(--s-3);border:1px solid var(--c-border-strong);border-radius:var(--r-md);background:transparent;color:var(--c-ink-soft);font-size:var(--t-xs);font-weight:500;letter-spacing:.04em;text-transform:uppercase;transition:color var(--d-fast) var(--ease),border-color var(--d-fast) var(--ease)}.theme-btn:hover{border-color:var(--c-ink-faint);color:var(--c-ink)}.mobile-menu-btn{width:40px;height:36px;display:none;place-items:center;gap:4px;padding:8px;border:1px solid var(--c-border-strong);border-radius:var(--r-md);background:transparent}.mobile-menu-btn span{width:18px;height:1.5px;display:block;background:var(--c-ink);transition:transform var(--d-fast) var(--ease),opacity var(--d-fast) var(--ease)}.mobile-menu-btn.active span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}.mobile-menu-btn.active span:nth-child(2){opacity:0}.mobile-menu-btn.active span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}@media(max-width:860px){.nav-container{width:min(100% - 32px,var(--container))}.mobile-menu-btn{display:grid}.nav-menu{position:fixed;top:calc(var(--nav-height) + var(--s-2));left:var(--s-4);right:var(--s-4);display:grid;gap:2px;padding:var(--s-2);border:1px solid var(--c-border);border-radius:var(--r-lg);background:var(--c-surface);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity var(--d-fast) var(--ease),transform var(--d-fast) var(--ease),visibility var(--d-fast) var(--ease)}.nav-menu.active{opacity:1;visibility:visible;transform:translateY(0)}.nav-link{justify-content:flex-start;min-height:44px}}@media(max-width:430px){.logo-subtitle{display:none}.theme-btn{min-width:40px;padding-inline:var(--s-2)}}@media(prefers-reduced-motion:reduce){.nav-menu{transition:none}}.lang-btn{min-width:40px;height:36px;display:grid;place-items:center;padding:0 var(--s-2);border:1px solid var(--c-border-strong);border-radius:var(--r-md);color:var(--c-ink-soft);font-family:var(--font-mono);font-size:var(--t-xs);font-weight:500;letter-spacing:.04em;text-decoration:none;transition:color var(--d-fast) var(--ease),border-color var(--d-fast) var(--ease)}.lang-btn:hover{border-color:var(--c-ink-faint);color:var(--c-ink);text-decoration:none}.lang-btn.active{border-color:var(--c-accent);color:var(--c-accent)}.footer{margin-top:auto;background:#111817;color:#fff;padding:54px 20px 28px}.footer-content{width:min(100%,var(--container));margin-inline:auto;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end}.footer .eyebrow{color:#75d0c2;margin-bottom:10px}.footer-title{max-width:720px;margin-bottom:12px;color:#fff;font-size:clamp(1.55rem,2.7vw,2.55rem)}.footer-subtitle{max-width:640px;margin-bottom:0;color:#cdd7d5}.social-links{display:flex;flex-wrap:wrap;gap:10px}.social-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-md);color:#fff;font-weight:740;transition:background .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease)}.social-link:hover{border-color:#75d0c270;background:#ffffff14;color:#fff;transform:translateY(-1px)}.footer-bottom{width:min(100%,var(--container));margin:34px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);color:#a4b2af;font-size:.92rem}@media(max-width:760px){.footer-content{grid-template-columns:1fr;align-items:start}}.footer-links-wrap{display:grid;gap:14px;justify-items:end}.footer-nav{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.footer-nav a{min-height:38px;display:inline-flex;align-items:center;justify-content:center;padding:8px 12px;border:1px solid rgba(255,255,255,.13);border-radius:999px;color:#cdd7d5;font-size:.9rem;font-weight:740}.footer-nav a:hover{border-color:#75d0c270;background:#ffffff12;color:#fff}@media(max-width:760px){.footer-links-wrap{justify-items:start}.footer-nav{justify-content:flex-start}}:root{--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--t-xs: .75rem;--t-sm: .8125rem;--t-base: 1rem;--t-md: 1.125rem;--t-lg: 1.375rem;--t-xl: 1.75rem;--t-2xl: 2.25rem;--c-canvas: #fbfaf8;--c-surface: #ffffff;--c-surface-sunk: #f4f2ee;--c-border: #e3ded6;--c-border-strong: #cec7bb;--c-ink: #17171a;--c-ink-soft: #54524e;--c-ink-faint: #706e68;--c-accent: #9a3412;--c-accent-hover: #7c2d12;--c-accent-wash: rgba(154, 52, 18, .08);--c-merged: #7c4dbd;--c-open: #1a7f37;--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 20px;--s-6: 24px;--s-8: 32px;--s-10: 40px;--s-12: 48px;--s-16: 64px;--s-24: 96px;--r-sm: 4px;--r-md: 6px;--r-lg: 8px;--ease: cubic-bezier(.22, 1, .36, 1);--d-fast: .14s;--d-view: .22s;--container: 1120px;--measure: 68ch;--nav-height: 64px;--color-canvas: var(--c-canvas);--color-surface: var(--c-surface);--color-surface-soft: var(--c-surface-sunk);--color-surface-tint: var(--c-surface);--color-ink: var(--c-ink);--color-muted: var(--c-ink-soft);--color-border: var(--c-border);--color-primary: var(--c-accent);--color-primary-strong: var(--c-accent-hover);--color-accent: var(--c-accent);--color-warm: #92400e;--color-danger: #b42318;--radius-sm: var(--r-sm);--radius-md: var(--r-md);--radius-lg: var(--r-lg);--shadow-sm: none;--shadow-md: 0 1px 2px rgba(23, 23, 26, .06);--shadow-lg: 0 8px 28px rgba(23, 23, 26, .1);--navbar-bg: rgba(251, 250, 248, .86);--navbar-border: var(--c-border);--navbar-scrolled-bg: rgba(251, 250, 248, .96)}[data-theme=dark]{--c-canvas: #0d0d0f;--c-surface: #141417;--c-surface-sunk: #1b1b1f;--c-border: #26262b;--c-border-strong: #3a3a41;--c-ink: #f2f0ed;--c-ink-soft: #a8a49d;--c-ink-faint: #827d76;--c-accent: #f0865a;--c-accent-hover: #f6a685;--c-accent-wash: rgba(240, 134, 90, .12);--c-merged: #a78bfa;--c-open: #3fb950;--color-warm: #f59e0b;--color-danger: #ff8a7c;--shadow-md: 0 1px 2px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 28px rgba(0, 0, 0, .45);--navbar-bg: rgba(13, 13, 15, .86);--navbar-scrolled-bg: rgba(13, 13, 15, .96)}*{box-sizing:border-box}html{color-scheme:light;scroll-behavior:smooth;-webkit-text-size-adjust:100%}[data-theme=dark]{color-scheme:dark}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden;background:var(--c-canvas);color:var(--c-ink);font-family:var(--font-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}button,a{touch-action:manipulation}button{cursor:pointer}img{display:block;max-width:100%}picture{display:contents}code,kbd,samp,pre{font-family:var(--font-mono);font-size:.9em;font-variant-numeric:tabular-nums}a{color:var(--c-accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.18em;text-decoration-color:color-mix(in srgb,var(--c-accent) 38%,transparent);transition:text-decoration-color var(--d-fast) var(--ease)}a:hover{color:var(--c-accent-hover);text-decoration-color:currentColor}#root{min-height:100vh;display:flex;flex-direction:column}.site-main{flex:1;padding-top:var(--nav-height)}.container,.section-container{width:min(100% - 40px,var(--container));margin-inline:auto}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{color:var(--c-ink);line-height:1.12;text-wrap:balance}h1{font-size:clamp(2rem,1.4rem + 2.6vw,3rem);font-weight:600;letter-spacing:-.022em}h2{font-size:clamp(1.5rem,1.2rem + 1.3vw,2.25rem);font-weight:600;letter-spacing:-.018em}h3{font-size:var(--t-lg);font-weight:600;letter-spacing:-.012em}h4{font-size:var(--t-md);font-weight:600}p{color:var(--c-ink-soft);max-width:var(--measure)}::selection{background:var(--c-accent-wash);color:var(--c-ink)}:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:var(--r-sm)}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);padding:10px var(--s-5);border:1px solid transparent;border-radius:var(--r-md);background:var(--c-accent);color:var(--c-canvas);font-size:.9375rem;font-weight:550;text-decoration:none;transition:background var(--d-fast) var(--ease),border-color var(--d-fast) var(--ease)}.btn:hover{background:var(--c-accent-hover);color:var(--c-canvas);text-decoration:none}.btn-secondary{background:transparent;color:var(--c-ink);border-color:var(--c-border-strong)}.btn-secondary:hover{background:var(--c-surface-sunk);color:var(--c-ink);border-color:var(--c-ink-faint)}.btn-large{min-height:48px;padding-inline:var(--s-6)}.eyebrow{display:block;margin:0 0 var(--s-2);color:var(--c-ink-faint);font-family:var(--font-mono);font-size:var(--t-xs);font-weight:500;letter-spacing:.06em;text-transform:uppercase}.surface-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg)}.section-heading{max-width:var(--measure);margin:0 0 var(--s-8)}.section-heading p{font-size:var(--t-md)}.meta{font-family:var(--font-mono);font-size:var(--t-sm);color:var(--c-ink-faint);font-variant-numeric:tabular-nums}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.page-loading{min-height:50vh;display:grid;place-items:center}.loading{width:20px;height:20px;border:2px solid var(--c-border-strong);border-top-color:var(--c-accent);border-radius:999px;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:768px){:root{--nav-height: 60px}.container,.section-container{width:min(100% - 32px,var(--container))}}@media(max-width:480px){.container,.section-container{width:min(100% - 24px,var(--container))}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}@media print{.navbar,.footer,.btn{display:none!important}body{background:#fff!important;color:#000!important}}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--s-3)}.hero-portrait{width:96px;height:96px;margin-bottom:var(--s-5);border-radius:var(--r-md);object-fit:cover}.section-more{margin:var(--s-5) 0 0;font-size:.9375rem}.fact-list{margin:0;display:grid;gap:var(--s-4)}.fact dt{color:var(--c-ink-faint);font-size:var(--t-xs);font-weight:500;letter-spacing:.04em;text-transform:uppercase}.fact dd{margin:2px 0 0;color:var(--c-ink);font-size:var(--t-xl);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.15}.fact-unit{display:block;margin-top:2px;color:var(--c-ink-soft);font-family:var(--font-sans);font-size:var(--t-sm);font-weight:400;letter-spacing:0}.fact-source{margin:var(--s-5) 0 0;padding-top:var(--s-4);border-top:1px solid var(--c-border);line-height:1.5;max-width:none}.domain-list{margin:0;padding:0;list-style:none;display:grid;gap:0;border-top:1px solid var(--c-border)}.domain{display:grid;grid-template-columns:56px minmax(0,1fr);gap:var(--s-5);padding-block:var(--s-8);border-bottom:1px solid var(--c-border)}.domain-index{font-size:var(--t-md);color:var(--c-ink-faint);line-height:1.4}.domain-body h3{margin-bottom:var(--s-3)}.domain-practice{margin:var(--s-4) 0 var(--s-4);padding:0;list-style:none;display:grid;gap:var(--s-2);max-width:var(--measure)}.domain-practice li{position:relative;padding-left:var(--s-5);color:var(--c-ink-soft);font-size:.9375rem}.domain-practice li:before{content:"";position:absolute;left:0;top:.62em;width:6px;height:1px;background:var(--c-border-strong)}.domain-stack{margin:0}.writing-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--c-border)}.writing-item{display:grid;grid-template-columns:110px minmax(0,1fr);gap:var(--s-5);padding-block:var(--s-5);border-bottom:1px solid var(--c-border)}.writing-date{margin:0;line-height:1.7}.writing-body h3{margin-bottom:var(--s-2);font-size:var(--t-md);letter-spacing:-.008em}.writing-body h3 a{color:var(--c-ink);text-decoration:none}.writing-body h3 a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:.18em}.writing-body p{margin:0;font-size:.9375rem}@media(max-width:700px){.writing-item{grid-template-columns:minmax(0,1fr);gap:var(--s-2)}}.error-boundary{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--color-canvas)}.error-boundary__panel{width:min(100%,620px);padding:30px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:linear-gradient(180deg,var(--color-surface),var(--color-surface-tint));box-shadow:var(--shadow-lg)}.error-boundary__panel h1{margin:8px 0 14px}.error-boundary__panel p:not(.eyebrow){max-width:560px}