.hero{background:var(--ink);color:#fff;padding:145px clamp(22px,6vw,90px) clamp(40px,6vw,72px)}.hero h1{font-size:clamp(28px,4.4vw,46px);font-weight:700;letter-spacing:-.03em;line-height:1.12;margin:0 0 16px;max-width:820px}.hero p{font-size:clamp(15px,1.6vw,18px);line-height:1.65;color:#b7c6d2;max-width:760px;margin:0}.hero p b{color:#fff;font-weight:600}.toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.toc a{font-family:var(--mono);font-size:12px;text-decoration:none;color:var(--teal);border:1px solid rgba(0,196,180,.4);border-radius:999px;padding:7px 14px;transition:background .2s ease,color .2s ease}.toc a:hover{background:var(--teal);color:var(--ink)}.toc a.amber{color:var(--amber);border-color:#d9822b80}.toc a.amber:hover{background:var(--amber);color:#fff}.toc-float{position:fixed;right:76px;bottom:22px;z-index:40;opacity:0;pointer-events:none;transition:opacity .2s ease}.toc-float--shown{opacity:1;pointer-events:auto}.toc-float__toggle{font-family:var(--mono);font-size:12px;color:var(--teal);background:var(--ink);border:1px solid rgba(0,196,180,.4);border-radius:999px;padding:11px 16px;cursor:pointer;box-shadow:0 10px 26px -10px #0f172980}.toc-float__nav{display:none;position:fixed;left:16px;right:16px;bottom:76px;max-height:60vh;overflow-y:auto;background:var(--white);border:1px solid var(--hair);border-radius:14px;padding:8px;box-shadow:0 18px 40px -20px #0f172973;gap:4px}.toc-float--open .toc-float__nav{display:flex;flex-direction:column}.toc-float__link{font-family:var(--mono);font-size:12.5px;text-decoration:none;color:var(--teal-deep);padding:9px 12px;border-left:2px solid transparent;border-radius:6px}.toc-float__link.amber{color:var(--amber-ink)}.toc-float__link:hover{background:var(--teal-wash)}.toc-float__link--current{border-left-color:var(--teal);background:var(--teal-wash);font-weight:600}.toc-float__link.amber.toc-float__link--current{border-left-color:var(--amber);background:var(--amber-wash)}@media(min-width:1024px){.toc-float{top:88px;right:24px;bottom:auto;width:220px}.toc-float__toggle{display:none}.toc-float__nav{display:flex;flex-direction:column;position:static;max-height:calc(100vh - 120px);box-shadow:none}}@media(prefers-reduced-motion:reduce){.toc-float{transition:none}}main{max-width:1400px;margin:0 auto;padding:clamp(28px,4vw,56px) clamp(18px,4vw,40px) 80px}section{margin-bottom:clamp(40px,6vw,72px)}main>section[id],main h3[id]{scroll-margin-top:112px}h2{font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.025em;margin:0 0 6px;scroll-margin-top:24px}h2 .tag{display:inline-block;vertical-align:middle;margin-left:10px;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--teal-deep);background:var(--teal-wash);border-radius:999px;padding:4px 12px}.lede{font-size:clamp(15px,1.6vw,17px);color:var(--slate);max-width:780px;margin:0 0 22px}.where{font-family:var(--mono);font-size:12px;color:var(--slate-ink);margin:-14px 0 22px}.where b{color:var(--teal-deep);font-weight:600}h3{font-size:17.5px;font-weight:700;letter-spacing:-.015em;margin:26px 0 8px}.card{background:var(--white);border:1px solid var(--hair);border-radius:14px;padding:clamp(20px,3vw,32px);box-shadow:0 14px 34px -24px #0f172947}.card+.card{margin-top:18px}.fieldlist{margin:14px 0 0;padding:0;list-style:none}.fieldlist li{padding:13px 0;border-top:1px solid var(--hair);display:grid;grid-template-columns:1fr;gap:8px 22px;align-items:baseline}.fieldlist li:first-child{border-top:none;padding-top:2px}.fieldlist .f{font-weight:600;font-size:14.5px;letter-spacing:-.01em;margin-bottom:-2px}.fieldlist .d{font-size:14.5px;color:var(--slate);line-height:1.6;margin:0}.req{color:var(--amber-ink);font-weight:700}.example{background:var(--teal-wash);border:1px solid rgba(0,196,180,.35);border-radius:12px;padding:16px 20px;margin:16px 0 0;font-size:14.5px;line-height:1.65;color:#134}.example b{color:var(--teal-deep)}.example .exlabel{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--teal-deep);margin-bottom:6px}.warn{background:var(--amber-wash);border:1px solid rgba(217,130,43,.4);border-radius:12px;padding:16px 20px;margin:16px 0 0;font-size:14.5px;line-height:1.65;color:#5b3a12}.warn .exlabel{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--amber-ink);margin-bottom:6px}code{font-family:var(--mono);font-size:.86em;background:#0f17290f;border-radius:6px;padding:2px 7px;color:var(--ink-2);white-space:normal;overflow-wrap:anywhere}.example code{background:#ffffffbf}.example .example__code{display:block;white-space:nowrap;overflow-x:auto;padding:12px 14px;margin:10px 0}.guide-shot{display:block;width:100%;height:auto;margin:14px 0 18px;border:1px solid var(--hair);border-radius:12px;box-shadow:0 14px 34px -24px #0f172947}.warn code{background:#ffffffbf}.tbl-wrap{overflow-x:auto;margin:16px 0 0}table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;border-collapse:collapse;width:100%;font-size:14px;background:var(--white);border:1px solid var(--hair);border-radius:12px;overflow:hidden}th,td{padding:11px clamp(10px,2.6vw,16px);text-align:left;border-bottom:1px solid var(--hair);vertical-align:top}th{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;color:var(--teal-deep);background:var(--teal-wash)}tr:last-child td{border-bottom:none}td code{white-space:normal;overflow-wrap:anywhere}.num{font-family:var(--mono);font-size:13px}details{background:var(--white);border:1px solid var(--hair);border-radius:12px;margin-top:12px;overflow:hidden}details[open]{border-color:#00c4b480}summary{cursor:pointer;padding:15px 20px;font-weight:600;font-size:15px;letter-spacing:-.01em;list-style:none;display:flex;align-items:center;gap:12px;user-select:none}summary::-webkit-details-marker{display:none}summary:before{content:"?";flex:none;width:24px;height:24px;border-radius:50%;background:var(--teal-wash);color:var(--teal-deep);font-family:var(--mono);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;transition:transform .25s ease}details[open] summary:before{content:"−";transform:rotate(180deg);background:var(--teal);color:var(--ink)}details .a{padding:0 20px 18px 56px;font-size:14.5px;color:var(--slate);line-height:1.65}details .a p{margin:0 0 10px}details .a p:last-child{margin-bottom:0}.flow{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin:20px 0 0}.flow .node{flex:1 1 150px;background:var(--white);border:1px solid var(--hair);border-radius:12px;padding:14px 16px;min-width:150px;position:relative}.flow .node b{display:block;font-size:14px;letter-spacing:-.01em;margin-bottom:3px}.flow .node span{font-size:12.5px;color:var(--slate);line-height:1.5;display:block}.flow .node i{font-style:normal;font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--teal-deep);display:block;margin-bottom:6px}.flow .arrow{align-self:center;color:var(--slate-dim);font-size:18px;flex:none}.who{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-top:18px}.who .p{background:var(--white);border:1px solid var(--hair);border-radius:12px;padding:18px 20px}.who .p b{display:block;font-size:15px;margin-bottom:4px}.who .p b em{font-style:normal;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--teal-deep);margin-left:8px}.who .p span{font-size:13.5px;color:var(--slate);line-height:1.6}@media(min-width:681px){.hero{padding:clamp(56px,8vw,96px) clamp(22px,6vw,90px) clamp(40px,6vw,72px)}.fieldlist li{grid-template-columns:190px 1fr}.fieldlist .f{margin-bottom:0}code,td code{white-space:nowrap;overflow-wrap:normal}table{display:table;overflow-x:visible}}@media(min-width:1024px){main{padding-right:220px}}@media(min-width:1580px){main{padding-right:clamp(18px,4vw,40px)}}@media(min-width:681px){main>section[id],main h3[id]{scroll-margin-top:84px}}