.stds{max-width:1280px;margin:0 auto;padding:96px clamp(20px,4vw,40px)}.stds-hero{max-width:920px;padding:18px 0 64px;border-bottom:1px solid var(--border-subtle);margin-bottom:48px;animation:stds-fade-in .9s cubic-bezier(.16,1,.3,1) both}.stds-back{display:inline-block;font-size:12px;font-family:var(--font-mono),ui-monospace,monospace;color:var(--text-tertiary);text-decoration:none;letter-spacing:.03em;margin-bottom:32px;transition:color .25s cubic-bezier(.16,1,.3,1)}.stds-back:hover{color:var(--text-secondary)}.stds-eyebrow{margin:0 0 12px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-title{margin:0 0 14px;font-size:clamp(44px,5.2vw,66px);font-weight:600;line-height:1.03;letter-spacing:0;color:var(--text);max-width:780px}.stds-kicker{margin:0 0 28px;font-size:18px;color:var(--text-secondary);line-height:1.65;max-width:680px}.stds-hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(240px,.8fr);gap:32px;align-items:start}.stds-prose{color:var(--text-secondary);font-size:15px;line-height:1.86}.stds-prose p{margin:0}.stds-prose p+p{margin-top:16px}.stds-side-note{padding-left:20px;border-left:1px solid var(--border)}.stds-note-label{margin:0 0 10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-note-list{margin:0;padding:0;list-style:none;display:grid;gap:12px}.stds-note-item{display:grid;gap:3px}.stds-note-item strong{font-size:13px;color:var(--text);font-weight:600}.stds-note-item span{font-size:13px;color:var(--text-tertiary);line-height:1.7}.stds-shell{display:grid;grid-template-columns:220px minmax(0,1fr);gap:64px}.stds-rail{position:sticky;top:88px;align-self:start}.stds-rail-title{margin:0 0 14px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-rail-nav{display:grid;gap:7px}.stds-rail-link{display:block;color:var(--text-tertiary);text-decoration:none;font-size:13px;line-height:1.45;padding:3px 0;transition:color .25s cubic-bezier(.16,1,.3,1)}.stds-rail-link:hover{color:var(--text-secondary)}.stds-rail-card{margin-top:24px;padding-top:18px;border-top:1px solid var(--border)}.stds-rail-card p{margin:0;font-size:12px;color:var(--text-tertiary);line-height:1.7}.stds-rail-card p+p{margin-top:10px}.stds-main{max-width:760px}.stds-section{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--border-subtle)}.stds-section:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.stds-section-head{margin-bottom:20px}.stds-section-title{margin:0 0 12px;font-size:31px;font-weight:600;line-height:1.15;letter-spacing:0;color:var(--text)}.stds-section-deck{margin:0;font-size:15px;line-height:1.82;color:var(--text-secondary);max-width:720px}.stds-ruleout{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:28px}.stds-ruleout-col{padding-top:16px;border-top:1px solid var(--border)}.stds-ruleout-label{margin:0 0 10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-ruleout-list{margin:0;padding-left:18px;color:var(--text-tertiary);font-size:14px;line-height:1.8}.stds-formula{margin-top:24px;padding:16px 18px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);font-size:13px;color:var(--text-secondary);font-family:var(--font-mono),ui-monospace,monospace;line-height:1.8;word-break:break-word}.stds-definition-grid,.stds-layer-list{margin-top:28px}.stds-definition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:40px}.stds-definition{padding:16px 0;border-top:1px solid var(--border-subtle)}.stds-definition dt{margin:0 0 6px;font-size:14px;font-weight:600;color:var(--text);letter-spacing:0}.stds-definition dd{margin:0;font-size:14px;color:var(--text-tertiary);line-height:1.78}.stds-layer-list{margin:28px 0 0;padding:0;list-style:none}.stds-layer-item{display:grid;grid-template-columns:72px minmax(0,1fr);gap:18px;padding:18px 0;border-top:1px solid var(--border-subtle)}.stds-layer-index{font-size:12px;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace;padding-top:2px}.stds-layer-copy strong{display:block;margin-bottom:5px;color:var(--text);font-size:14px;font-weight:600}.stds-layer-copy span{color:var(--text-tertiary);font-size:14px;line-height:1.78}.stds-table-wrap{overflow-x:auto;margin-top:24px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.stds-table{width:100%;border-collapse:collapse}.stds-table thead th{text-align:left;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-table tbody td,.stds-table thead th{padding:16px 0;border-bottom:1px solid var(--border-subtle)}.stds-table tbody td{vertical-align:top;font-size:14px;line-height:1.8}.stds-table tbody tr:last-child td{border-bottom:none}.stds-table-primary{color:var(--text);font-weight:500;width:28%;padding-right:28px!important}.stds-table-secondary{color:var(--text-tertiary)}.stds-disclosures{margin-top:28px;border-top:1px solid var(--border)}.stds-disclosure{border-bottom:1px solid var(--border-subtle)}.stds-disclosure summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;cursor:pointer}.stds-disclosure summary::-webkit-details-marker{display:none}.stds-disclosure-heading{display:flex;align-items:center;gap:12px;min-width:0}.stds-disclosure-title{font-size:16px;font-weight:600;color:var(--text);letter-spacing:0}.stds-disclosure-meta{font-size:11px;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace;text-transform:uppercase;letter-spacing:.08em;white-space:nowrap}.stds-disclosure-chevron{width:10px;height:10px;border-right:1.5px solid var(--text-muted);border-bottom:1.5px solid var(--text-muted);transform:rotate(45deg);transition:transform .25s cubic-bezier(.16,1,.3,1);flex:0 0 auto;margin-right:3px}.stds-disclosure[open] .stds-disclosure-chevron{transform:rotate(225deg)}.stds-disclosure-copy{padding:0 0 18px}.stds-disclosure-intro{margin:0 0 18px;font-size:14px;color:var(--text-secondary);line-height:1.82}.stds-clause-list{display:grid;gap:12px}.stds-clause{display:grid;grid-template-columns:108px minmax(0,1fr);gap:16px;padding-left:18px;border-left:1px solid var(--border)}.stds-clause-id{padding-top:2px;font-size:11px;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace;letter-spacing:.05em}.stds-clause-text{margin:0;font-size:14px;color:var(--text-tertiary);line-height:1.8}.stds-split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(240px,.9fr);gap:36px;align-items:start}.stds-list{margin:0;padding-left:18px;color:var(--text-tertiary);font-size:14px;line-height:1.8}.stds-list li+li{margin-top:10px}.stds-callout{padding-top:18px;border-top:1px solid var(--border)}.stds-callout-label{margin:0 0 10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace}.stds-callout p{margin:0;font-size:13px;color:var(--text-tertiary);line-height:1.8}.stds-workstreams{margin-top:24px;border-top:1px solid var(--border)}.stds-workstream{display:grid;grid-template-columns:48px minmax(0,1fr);gap:18px;padding:18px 0;border-bottom:1px solid var(--border-subtle)}.stds-workstream-index{font-size:11px;color:var(--text-muted);font-family:var(--font-mono),ui-monospace,monospace;padding-top:2px}.stds-workstream-copy strong{display:block;margin-bottom:5px;color:var(--text);font-size:14px;font-weight:600}.stds-workstream-copy span{color:var(--text-tertiary);font-size:14px;line-height:1.8}.stds-footer-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}@keyframes stds-fade-in{0%{opacity:0;filter:blur(8px);transform:translateY(14px)}to{opacity:1;filter:blur(0);transform:translateY(0)}}@media (max-width:1024px){.stds-shell{grid-template-columns:1fr;gap:32px}.stds-rail{position:static}.stds-definition-grid,.stds-hero-grid,.stds-ruleout,.stds-split{grid-template-columns:1fr}}@media (max-width:720px){.stds{padding:72px 16px}.stds-title{font-size:clamp(36px,10vw,48px)}.stds-section-title{font-size:26px}.stds-clause,.stds-layer-item,.stds-workstream{grid-template-columns:1fr;gap:8px}.stds-table-primary{width:auto;padding-right:16px!important}.stds-disclosure summary{align-items:flex-start}}@media (prefers-reduced-motion:reduce){.stds-hero{animation:none}.stds-disclosure-chevron{transition:none}}