:root{--nav-theme:210 90% 55%;--nav-theme-light:210 90% 68%;--bg:#08111d;--panel:#0d1928;--panel-2:#111f31;--line:#26364b;--text:#edf5ff;--muted:#9cb0c8;--accent:hsl(var(--nav-theme));--accent-light:hsl(var(--nav-theme-light));--gold:#e9ba56;--shadow:0 14px 36px rgba(0,0,0,.22)}
/* Theme research: nav-theme = 210 90% 55%, nav-theme-light = 210 90% 68% */
html[data-theme="light"]{--bg:#eef4fa;--panel:#fff;--panel-2:#f6f9fc;--line:#d9e3ee;--text:#142235;--muted:#61738a;--shadow:0 10px 28px rgba(36,61,90,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 50% -20%,rgba(21,127,235,.18),transparent 32rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{max-width:1500px;margin:auto;height:70px;display:flex;align-items:center;gap:20px;padding:0 24px}.brand{display:flex;align-items:center;gap:10px;min-width:250px}.brand img{width:42px;height:42px;border-radius:10px}.brand span{display:flex;flex-direction:column;line-height:1.1}.brand b{font-size:15px}.brand small{font-size:12px;color:var(--muted);margin-top:4px}.top-nav{display:flex;gap:3px;flex:1}.top-link{padding:22px 13px 19px;color:var(--muted);font-weight:700;font-size:14px;border-bottom:3px solid transparent}.top-link:hover,.top-link.active{color:var(--text);border-bottom-color:var(--accent)}.header-actions{display:flex;gap:8px}.header-actions select,.theme-btn,.menu-btn{background:var(--panel);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:8px 10px}.menu-btn{display:none;font-size:18px}.page-grid{max-width:1500px;margin:0 auto;display:grid;grid-template-columns:235px minmax(0,1fr) 275px;gap:24px;padding:28px 24px 54px}.sidebar{position:sticky;top:94px;height:max-content;border:1px solid var(--line);background:var(--panel);border-radius:12px;overflow:hidden}.side-group{padding:14px 0;border-bottom:1px solid var(--line)}.side-group:last-child{border:0}.side-title{font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:900;padding:0 15px 8px;text-transform:uppercase}.side-link{display:block;padding:8px 15px;color:var(--muted);font-size:14px;border-left:3px solid transparent}.side-link:hover,.side-link.active{color:var(--text);background:color-mix(in srgb,var(--accent) 8%,transparent);border-left-color:var(--accent)}.main-column{min-width:0}.right-rail{display:flex;flex-direction:column;gap:16px;position:sticky;top:94px;height:max-content}.rail-card,.content-card,.hero,.final-cta{background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.rail-card{padding:18px}.rail-kicker,.eyebrow{font-size:10px;letter-spacing:.17em;font-weight:900;color:var(--accent-light);text-transform:uppercase}.rail-card h3{margin:4px 0 12px;font-size:16px}.toc a{display:block;padding:6px 0;color:var(--muted);font-size:13px;border-bottom:1px dashed color-mix(in srgb,var(--line) 75%,transparent)}.toc a:hover{color:var(--accent-light)}.code-row{display:flex;justify-content:space-between;gap:10px;background:var(--panel-2);border:1px solid var(--line);padding:9px 10px;border-radius:8px;margin:8px 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.status{font-family:inherit;color:var(--muted);font-size:10px}.tiny{color:var(--muted);font-size:12px}.hero{padding:34px;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:auto -70px -110px auto;width:310px;height:310px;border:1px solid color-mix(in srgb,var(--accent) 35%,transparent);border-radius:50%;box-shadow:0 0 80px rgba(0,123,255,.12)}.hero h1{font-size:clamp(32px,5vw,58px);line-height:1.05;margin:10px 0 15px;letter-spacing:-.035em}.hero p{color:var(--muted);max-width:780px;font-size:17px}.stats{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.stat-pill{background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:7px 11px;font-size:12px;font-weight:800}.actions{display:flex;flex-wrap:wrap;gap:10px}.button{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:white;border:0;border-radius:9px;padding:10px 15px;font-weight:850;font-size:14px}.button.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.button.small{padding:8px 10px;font-size:12px}.section{margin-top:22px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:12px}.section-head h2{margin:0;font-size:25px}.section-head p{margin:0;color:var(--muted);font-size:13px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.guide-card,.journey-card{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:18px;transition:.18s transform,.18s border-color}.guide-card:hover,.journey-card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 60%,var(--line))}.journey-card .number{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent-light);font-weight:900}.journey-card h3,.guide-card h3{margin:10px 0 5px}.journey-card p,.guide-card p{color:var(--muted);font-size:14px;margin:0}.content-card{padding:24px}.content-card h1{font-size:34px;line-height:1.14;margin:5px 0 8px}.content-card h2{font-size:23px;margin:30px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--line)}.content-card h3{font-size:18px}.content-card p,.content-card li{color:color-mix(in srgb,var(--text) 88%,var(--muted))}.content-card strong{color:var(--text)}.meta-line{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-bottom:20px}.notice{border-left:3px solid var(--gold);background:color-mix(in srgb,var(--gold) 8%,transparent);padding:12px 14px;border-radius:0 8px 8px 0;color:var(--muted);font-size:13px;margin:14px 0}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:9px;margin:14px 0}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}th{background:var(--panel-2);color:var(--text)}td{color:var(--muted)}tr:last-child td{border:0}.about-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:16px}.about-stat{background:var(--panel-2);border:1px solid var(--line);border-radius:9px;padding:12px}.about-stat span{display:block;color:var(--muted);font-size:11px}.about-stat b{display:block;margin-top:3px;font-size:13px}.final-cta{padding:28px;margin-top:22px;background:linear-gradient(120deg,color-mix(in srgb,var(--accent) 16%,var(--panel)),var(--panel))}.final-cta h2{margin:0 0 6px}.final-cta p{color:var(--muted)}.footer{max-width:1500px;margin:0 auto 30px;padding:28px 24px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:20px;color:var(--muted);font-size:13px}.footer b{color:var(--text)}.footer-links{display:flex;flex-wrap:wrap;gap:8px 15px;align-content:start}.footer-links a:hover{color:var(--accent-light)}.legal{grid-column:1/-1;font-size:11px}.guide-list{display:grid;gap:12px}.guide-list .guide-card{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}.badge{font-size:10px;font-weight:900;padding:5px 8px;border:1px solid var(--line);border-radius:999px;color:var(--accent-light)}code{background:var(--panel-2);border:1px solid var(--line);border-radius:5px;padding:2px 5px}.muted{color:var(--muted)}
@media(max-width:1100px){.page-grid{grid-template-columns:210px minmax(0,1fr)}.right-rail{display:none}.top-nav{display:none}}@media(max-width:760px){.header-inner{padding:0 14px}.brand{min-width:0;flex:1}.brand small{display:none}.menu-btn{display:block}.page-grid{grid-template-columns:1fr;padding:16px}.sidebar{display:none;position:fixed;z-index:60;left:12px;right:12px;top:78px;max-height:75vh;overflow:auto}.sidebar.open{display:block}.hero{padding:24px}.card-grid{grid-template-columns:1fr}.about-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.content-card{padding:18px}.footer{grid-template-columns:1fr;padding:24px 16px}.top-link{padding:0}.header-actions select{max-width:75px}}