:root{--bg: #101828;--bg-deep: #0b1120;--panel: #16203a;--panel-2: #1c2947;--border: #293650;--border-soft: #212e46;--text: #e8edf5;--muted: #9aa8bf;--faint: #6b7a93;--amber: #f59e0b;--amber-bright: #fbbf24;--amber-dim: rgba(245, 158, 11, .14);--red: #f87171;--red-dim: rgba(248, 113, 113, .12);--green: #4ade80;--mono: ui-monospace, "SF Mono", "SFMono-Regular", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;--sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--wave-amber: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='6'%3E%3Cpath d='M0 4 Q2 1 4 4 T8 4' stroke='%23f59e0b' fill='none' stroke-width='1.3'/%3E%3C/svg%3E");--wave-red: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='6'%3E%3Cpath d='M0 4 Q2 1 4 4 T8 4' stroke='%23f87171' fill='none' stroke-width='1.3'/%3E%3C/svg%3E");--maxw: 1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.001ms!important;transition-duration:.001ms!important}}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}h1,h2,h3,h4{line-height:1.15;letter-spacing:-.02em;font-weight:650}code,pre,kbd{font-family:var(--mono)}::selection{background:var(--amber);color:#1b1206}.shell{min-height:100vh;display:flex;flex-direction:column}.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}.nav{position:sticky;top:0;z-index:50;background:#101828d1;-webkit-backdrop-filter:saturate(140%) blur(12px);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--border-soft)}.nav-inner{display:flex;align-items:center;gap:28px;height:60px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.03em;font-size:18px}.brand img{width:24px;height:28px;display:block}.brand .tld{color:var(--amber)}.nav-links{display:flex;gap:22px;margin-left:auto;align-items:center}.nav-links a{color:var(--muted);font-size:14.5px;font-weight:500;transition:color .15s ease}.nav-links a:hover,.nav-links a.active{color:var(--text)}.nav-gh{border:1px solid var(--border);padding:6px 12px;border-radius:8px}.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .12s ease,background .15s ease,border-color .15s ease}.btn-primary{background:var(--amber);color:#1b1206}.btn-primary:hover{background:var(--amber-bright);transform:translateY(-1px)}.btn-ghost{border-color:var(--border);color:var(--text)}.btn-ghost:hover{border-color:var(--amber);color:var(--amber-bright)}.hero{position:relative;padding:76px 0 64px;overflow:hidden}.hero:before{content:"";position:absolute;top:-30%;right:-10%;width:620px;height:620px;background:radial-gradient(circle,rgba(245,158,11,.11),transparent 62%);pointer-events:none}.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin-bottom:20px}.hero h1{font-size:clamp(2.5rem,5.2vw,3.65rem);margin:0 0 18px}.hero h1 .squiggle{color:var(--amber)}.squiggle{background-image:var(--wave-amber);background-repeat:repeat-x;background-position:0 100%;padding-bottom:3px}.hero p.lede{font-size:1.18rem;color:var(--muted);max-width:34ch;margin:0 0 30px}.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}.stat-row{display:flex;gap:28px;flex-wrap:wrap}.stat{display:flex;flex-direction:column}.stat b{font-size:1.5rem;font-weight:700;letter-spacing:-.03em}.stat span{font-size:13px;color:var(--faint)}.editor{background:var(--bg-deep);border:1px solid var(--border);border-radius:14px;box-shadow:0 30px 60px -30px #000000b3;overflow:hidden}.editor-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;border-bottom:1px solid var(--border-soft);background:var(--panel)}.editor-bar .dot{width:11px;height:11px;border-radius:50%;background:var(--border)}.editor-bar .fname{margin-left:8px;font-family:var(--mono);font-size:12.5px;color:var(--muted)}.ed-rows{padding:14px 0;font-family:var(--mono);font-size:13.5px;line-height:1.75;overflow-x:auto}.erow{display:flex}.erow.flagged{background:linear-gradient(90deg,var(--red-dim),transparent)}.enum{width:40px;min-width:40px;text-align:right;padding-right:16px;color:var(--faint);-webkit-user-select:none;user-select:none}.ecode{white-space:pre;padding-right:16px}.erow.flagged .ecode{background-image:var(--wave-red);background-repeat:repeat-x;background-position:0 100%}.diag-callout{margin:4px 16px 16px 56px;border-left:2px solid var(--red);background:var(--red-dim);padding:8px 12px;border-radius:0 8px 8px 0;font-family:var(--sans);font-size:12.5px;color:#fdd}.diag-callout b{color:var(--red);font-family:var(--mono);font-weight:600;margin-right:8px}.tok-k{color:#f59e0b}.tok-t{color:#7dd3fc}.tok-s{color:#86efac}.tok-c{color:#64748b;font-style:italic}.tok-n{color:#fca5a5}.tok-a{color:#c4b5fd}.section{padding:56px 0}.section-alt{background:var(--bg-deep);border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}.section h2{font-size:1.9rem;margin:0 0 8px}.section .sub{color:var(--muted);margin:0 0 32px;max-width:60ch}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature{background:var(--panel);border:1px solid var(--border-soft);border-radius:12px;padding:22px}.feature h3{font-size:1.05rem;margin:0 0 8px}.feature p{margin:0;color:var(--muted);font-size:14.5px}.feature .ic{color:var(--amber);font-size:20px;margin-bottom:12px}.codeblock{background:var(--bg-deep);border:1px solid var(--border);border-radius:12px;overflow:hidden}.codeblock-head{display:flex;align-items:center;justify-content:space-between;padding:9px 14px;border-bottom:1px solid var(--border-soft);background:var(--panel);font-family:var(--mono);font-size:12px;color:var(--muted)}.codeblock pre{margin:0;padding:16px;overflow-x:auto;font-size:13.5px;line-height:1.65}.install{max-width:640px}.layout{display:grid;grid-template-columns:244px 1fr;gap:40px;align-items:start;padding:36px 0 72px}.sidebar{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 100px);overflow-y:auto}.sidebar h4{font-size:11.5px;text-transform:uppercase;letter-spacing:.12em;color:var(--faint);margin:22px 0 8px}.sidebar h4:first-child{margin-top:0}.sidebar a{display:block;padding:5px 10px;border-radius:7px;color:var(--muted);font-size:14px;border-left:2px solid transparent;transition:color .12s ease,background .12s ease}.sidebar a:hover{color:var(--text);background:var(--panel)}.sidebar a.active{color:var(--amber-bright);border-left-color:var(--amber);background:var(--amber-dim)}.content{min-width:0}.rules-head{margin-bottom:28px}.rules-head h1{font-size:2.1rem;margin:0 0 8px}.rules-head p{color:var(--muted);margin:0}.group-block{margin-bottom:40px;scroll-margin-top:84px}.group-title{display:flex;align-items:baseline;gap:12px;border-bottom:1px solid var(--border-soft);padding-bottom:10px;margin-bottom:4px}.group-title h2{font-size:1.4rem;margin:0}.group-title .count{color:var(--faint);font-size:13px;font-family:var(--mono)}.group-title .blurb{color:var(--muted);font-size:14px;margin:0 0 12px}.rule-row{display:block;padding:14px 16px;border-radius:10px;border:1px solid transparent;transition:border-color .12s ease,background .12s ease}.rule-row:hover{border-color:var(--border);background:var(--panel)}.rule-row-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.rule-name{font-family:var(--mono);font-size:14.5px;color:var(--text);font-weight:500}.rule-row:hover .rule-name{color:var(--amber-bright)}.rule-desc{color:var(--muted);font-size:14px;margin:5px 0 0}.badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;letter-spacing:.02em;white-space:nowrap}.badge-rec{background:var(--amber-dim);color:var(--amber-bright);border:1px solid rgba(245,158,11,.3)}.badge-cross{background:#7dd3fc1f;color:#7dd3fc;border:1px solid rgba(125,211,252,.28)}.tag{font-size:11px;font-family:var(--mono);padding:2px 7px;border-radius:6px;background:var(--panel-2);color:var(--muted);border:1px solid var(--border-soft)}.detail-head{border-bottom:1px solid var(--border-soft);padding-bottom:20px;margin-bottom:26px}.crumbs{font-size:13px;color:var(--faint);margin-bottom:14px}.crumbs a:hover{color:var(--muted)}.detail-head h1{font-family:var(--mono);font-size:1.8rem;letter-spacing:-.02em;margin:0 0 12px;word-break:break-word}.detail-badges{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:16px}.meta-table{display:grid;grid-template-columns:auto 1fr;gap:8px 20px;font-size:14px;margin-top:16px}.meta-table dt{color:var(--faint)}.meta-table dd{margin:0;color:var(--text)}.meta-table a{color:var(--amber-bright)}.meta-table a:hover{text-decoration:underline}.detail-section{margin:34px 0}.detail-section h2{font-size:1.2rem;display:flex;align-items:center;gap:10px;margin:0 0 14px}.dot-good{width:9px;height:9px;border-radius:50%;background:var(--green)}.dot-bad{width:9px;height:9px;border-radius:50%;background:var(--red)}.diag-list{margin-top:12px;display:flex;flex-direction:column;gap:6px}.diag{display:flex;gap:10px;align-items:baseline;background:var(--red-dim);border:1px solid rgba(248,113,113,.25);border-radius:8px;padding:8px 12px;font-size:13.5px}.diag .loc{font-family:var(--mono);font-size:12.5px;color:var(--red);white-space:nowrap}.diag .msg{color:#f6dede}.fixture-name{font-family:var(--mono);font-size:12px;color:var(--amber);margin:16px 0 6px}.prose{max-width:760px}.prose h1{font-size:2rem;margin:0 0 20px}.prose h2{font-size:1.4rem;margin:34px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}.prose h3{font-size:1.12rem;margin:24px 0 10px}.prose p,.prose li{color:#cdd6e5}.prose a{color:var(--amber-bright);text-decoration:underline;text-underline-offset:2px}.prose code{background:var(--panel-2);border:1px solid var(--border-soft);padding:1.5px 6px;border-radius:5px;font-size:.88em;color:#f2d6a0}.prose pre{background:var(--bg-deep);border:1px solid var(--border);border-radius:12px;padding:16px;overflow-x:auto}.prose pre code{background:none;border:none;padding:0;color:var(--text)}.prose blockquote{border-left:3px solid var(--amber);margin:16px 0;padding:4px 16px;color:var(--muted);background:var(--amber-dim);border-radius:0 8px 8px 0}.prose table{border-collapse:collapse;width:100%;margin:16px 0;font-size:14px}.prose th,.prose td{border:1px solid var(--border);padding:8px 12px;text-align:left}.prose th{background:var(--panel)}.domain-card{background:var(--panel);border:1px solid var(--border-soft);border-radius:14px;padding:24px;margin-bottom:24px}.domain-card h2{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:1.3rem;margin:0 0 6px}.domain-card .desc{color:var(--muted);margin:0 0 18px}.domain-rules{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}.footer{margin-top:auto;border-top:1px solid var(--border-soft);padding:32px 0;color:var(--faint);font-size:14px}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer a{color:var(--muted)}.footer a:hover{color:var(--amber-bright)}.tabs{margin:8px 0}.tablist{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--border-soft);margin-bottom:14px}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:none;border-bottom:2px solid transparent;color:var(--muted);font-family:var(--mono);font-size:13px;font-weight:500;padding:8px 12px;cursor:pointer;margin-bottom:-1px;transition:color .12s ease,border-color .12s ease}.tab:hover{color:var(--text)}.tab.active{color:var(--amber-bright);border-bottom-color:var(--amber)}.tab:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}.diag-frames{display:flex;flex-direction:column;gap:12px;margin-top:14px}.diag-frame{border:1px solid rgba(248,113,113,.3);border-left:3px solid var(--red);border-radius:8px;background:var(--bg-deep);overflow:hidden}.diag-frame-msg{padding:9px 14px;font-size:13px;color:#f6dede;background:var(--red-dim);border-bottom:1px solid rgba(248,113,113,.2)}.diag-frame-file{font-family:var(--mono);font-size:12px;color:var(--red);margin-right:10px}.diag-frame-code{padding:10px 0;font-family:var(--mono);font-size:13px;line-height:1.6;overflow-x:auto}.fline{display:flex;white-space:pre}.fline.target{background:linear-gradient(90deg,var(--red-dim),transparent)}.fgutter{min-width:3ch;text-align:right;padding-right:12px;color:var(--faint);-webkit-user-select:none;user-select:none;flex:none}.fcode{white-space:pre;padding-right:16px}.fcaret{color:var(--red)}.fcaret .caret{color:var(--red);font-weight:700}.rule-detail{max-width:820px}.rule-title{font-family:var(--mono);font-size:1.8rem;letter-spacing:-.02em;margin:0 0 16px;word-break:break-word}.rule-summary{display:flex;flex-direction:column;gap:10px;padding:16px;background:var(--panel);border:1px solid var(--border-soft);border-radius:12px;margin-bottom:22px}.category-path{font-family:var(--mono);font-size:13px;color:var(--amber-bright)}.rule-summary-badges{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.rule-source{font-size:13px;color:var(--muted)}.rule-source a{color:var(--amber-bright)}.rule-source a:hover{text-decoration:underline}.rule-source code{background:var(--panel-2);padding:1px 5px;border-radius:4px;font-size:.92em;color:#f2d6a0}.rule-source .src-origin{color:var(--faint)}.callout{border-radius:10px;padding:14px 16px;margin:20px 0;font-size:14px;line-height:1.55}.callout code{background:var(--panel-2);padding:1px 6px;border-radius:4px;font-size:.9em;color:#f2d6a0}.callout-cross{background:#7dd3fc14;border:1px solid rgba(125,211,252,.28);border-left:3px solid #7dd3fc;color:#cfe6f5}.callout-cross strong{color:#7dd3fc}.rule-docs{max-width:none;margin:20px 0}.rule-section{margin:34px 0}.rule-section h2{font-size:1.2rem;display:flex;align-items:center;gap:10px;margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}.example-invalid .codeblock{border-color:#f8717159}.example-valid .codeblock{border-color:#4ade8047}.fixture-clean{color:var(--green);font-size:13px;margin:10px 0 0}.related ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px 22px}.related a{color:var(--amber-bright);font-size:14px}.related a:hover{text-decoration:underline}.reference{max-width:820px}.ref-section{margin:32px 0;scroll-margin-top:84px}.ref-section>h2{font-size:1.3rem;margin:0 0 6px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}.ref-section>h2 code{font-family:var(--mono);color:var(--amber-bright)}.ref-section .blurb{color:var(--muted);font-size:14px;margin:0 0 16px}.flag,.config-key{border:1px solid var(--border-soft);border-radius:10px;padding:14px 16px;margin-bottom:12px;background:var(--panel)}.flag-sig,.config-key-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}.flag-name,.config-path{font-family:var(--mono);font-size:14px;color:var(--amber-bright);background:var(--bg-deep);border:1px solid var(--border-soft);padding:2px 8px;border-radius:6px}.flag-alias{font-family:var(--mono);font-size:13px;color:var(--muted)}.flag-kind{font-size:11px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}.config-type{font-family:var(--mono);font-size:12.5px;color:#7dd3fc}.flag-help,.config-desc{color:var(--muted);font-size:14px;margin:0 0 8px}.flag-meta,.config-meta{display:flex;gap:8px;flex-wrap:wrap}.flag-tag{font-size:12px;color:var(--muted);background:var(--panel-2);border:1px solid var(--border-soft);border-radius:6px;padding:2px 8px}.flag-tag code{color:#f2d6a0;font-size:.92em}.flag-tag a{color:var(--amber-bright)}.inline-link{color:var(--amber-bright);text-decoration:underline;text-underline-offset:2px}.sidebar-col{min-width:0}.docs-menu-toggle{display:none;width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:10px 14px;font-size:14px;font-weight:600;cursor:pointer;align-items:center;gap:10px}.docs-menu-toggle .menu-ico{color:var(--amber)}.toc{margin-top:18px;padding-top:14px;border-top:1px solid var(--border-soft)}.footer-cols{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:24px}.footer-brand{color:var(--faint);max-width:28ch}.footer-group h5{font-size:11.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin:0 0 10px}.footer-group a{display:block;color:var(--muted);font-size:14px;padding:3px 0}.footer-group a:hover{color:var(--amber-bright)}@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:36px}.feature-grid,.layout{grid-template-columns:1fr}.footer-cols{grid-template-columns:1fr 1fr}.docs-menu-toggle{display:flex}.sidebar{position:static;max-height:none;display:none;margin-top:12px;padding-bottom:16px;border-bottom:1px solid var(--border-soft)}.sidebar.open{display:block}.nav-links .hide-sm{display:none}}@media(max-width:560px){.footer-cols{grid-template-columns:1fr}}@media(max-width:560px){.wrap{padding:0 16px}.hero h1{font-size:2.2rem}}