:root{color:#172033;font-synthesis:none;background:#f4f7fb;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 8% 4%,#2590ff29,#0000 28rem),radial-gradient(circle at 94% 92%,#2c36911a,#0000 30rem),#f4f7fb;min-width:320px;min-height:100vh;margin:0}a{color:inherit}.site-header{justify-content:space-between;align-items:center;width:min(1120px,100% - 40px);margin:0 auto;padding:28px 0;display:flex}.brand{color:#202a66;align-items:center;text-decoration:none;display:inline-flex}.brand-logo{background:url(/assets/castine_logo-BVC1HedV.svg) 50%/contain no-repeat;width:180px;height:49px;display:block}.header-label{color:#647087;letter-spacing:.08em;text-transform:uppercase;font-size:.86rem;font-weight:700}.landing-main{width:min(760px,100% - 40px);margin:7vh auto 72px}.eyebrow{color:#1e67b5;letter-spacing:.12em;text-transform:uppercase;align-items:center;gap:8px;margin:0 0 16px;font-size:.78rem;font-weight:800;display:inline-flex}.eyebrow:before{content:"";background:#1e90ff;border-radius:50%;width:7px;height:7px}h1,h2,p{margin-top:0}.landing-main h1{color:#182052;letter-spacing:-.055em;max-width:650px;margin-bottom:18px;font-size:clamp(2.4rem,7vw,4.5rem);line-height:1.02}.landing-intro{color:#657087;max-width:620px;margin-bottom:38px;font-size:1.08rem;line-height:1.7}.app-list{gap:14px;margin:0;padding:0;list-style:none;display:grid}.app-button{background:#ffffffe6;border:1px solid #2a3a6f1f;border-radius:20px;grid-template-columns:64px 1fr auto;align-items:center;gap:20px;min-height:98px;padding:17px 20px;text-decoration:none;transition:transform .18s,border-color .18s,box-shadow .18s;display:grid;overflow:hidden;box-shadow:0 14px 35px #1f2b5b12}.app-button:hover,.app-button:focus-visible{border-color:#1e90ff80;outline:none;transform:translateY(-3px);box-shadow:0 18px 42px #1f478b24}.app-logo{filter:drop-shadow(0 7px 12px #19285f29);width:64px;height:64px}.app-copy strong,.app-copy span{display:block}.app-copy strong{color:#1b2458;margin-bottom:5px;font-size:1.13rem}.app-copy span{color:#6b7589;font-size:.92rem;line-height:1.45}.app-arrow{color:#1b65ad;background:#edf4fc;border-radius:50%;place-items:center;width:38px;height:38px;font-size:1.3rem;transition:transform .18s,background .18s;display:grid}.app-button:hover .app-arrow{color:#fff;background:#1e90ff;transform:translate(3px)}.landing-footer{color:#7a8497;text-align:center;margin-top:30px;font-size:.82rem}.guide-main{width:min(1120px,100% - 40px);margin:8px auto 80px}.back-link{color:#536078;align-items:center;gap:8px;margin-bottom:26px;font-size:.9rem;font-weight:700;text-decoration:none;display:inline-flex}.back-link:hover{color:#1e67b5}.guide-hero,.guide-grid{grid-template-columns:minmax(0,1.05fr) minmax(330px,.95fr);gap:34px;display:grid}.guide-hero{background:#ffffffe6;border:1px solid #2a3a6f1a;border-radius:28px;align-items:center;padding:42px;box-shadow:0 22px 55px #1f2b5b14}.product-heading{align-items:center;gap:18px;margin-bottom:22px;display:flex}.product-heading img{width:72px;height:72px}.product-heading h1{color:#182052;letter-spacing:-.045em;margin-bottom:6px;font-size:clamp(2rem,5vw,3.5rem);line-height:1}.product-heading p,.guide-lead{color:#69748a;margin-bottom:0}.guide-lead{max-width:600px;font-size:1rem;line-height:1.7}.ecosystem-panel{background:linear-gradient(145deg,#f0f7ff,#f7f3ff);border-radius:22px;place-items:center;min-height:280px;padding:24px;display:grid}.ecosystem-panel img{width:min(100%,360px);height:auto}.feature-card,.install-card,.manifest-card{background:#ffffffeb;border:1px solid #2a3a6f1a;border-radius:24px;margin-top:26px;padding:32px}.feature-card h2,.install-card h2,.manifest-card h2{color:#1b2458;margin-bottom:18px;font-size:1.35rem}.feature-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 24px;margin:0;padding:0;list-style:none;display:grid}.feature-list li{color:#566176;padding-left:24px;line-height:1.5;position:relative}.feature-list li:before{content:"";background:#1e90ff;border-radius:50%;width:8px;height:8px;position:absolute;top:.55em;left:2px;box-shadow:0 0 0 5px #1e90ff1c}.guide-grid{gap:26px}.manifest-card p,.install-card li,.admin-note{color:#606b80;line-height:1.65}.manifest-url{overflow-wrap:anywhere;color:#31405e;background:#f2f5fa;border-radius:12px;margin:18px 0;padding:13px 15px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.84rem;display:block}.primary-button{color:#fff;background:#1e6fbd;border-radius:12px;justify-content:center;align-items:center;min-height:44px;padding:0 18px;font-size:.9rem;font-weight:800;text-decoration:none;display:inline-flex}.primary-button:hover{background:#165b9e}.install-steps{counter-reset:steps;gap:16px;margin:0;padding:0;list-style:none;display:grid}.install-steps li{counter-increment:steps;min-height:38px;padding-left:50px;position:relative}.install-steps li:before{color:#1d65aa;content:counter(steps);background:#edf4fc;border-radius:10px;place-items:center;width:34px;height:34px;font-weight:800;display:grid;position:absolute;top:0;left:0}.admin-note{border-top:1px solid #e8ebf1;margin:24px 0 0;padding-top:22px;font-size:.9rem}.admin-note a{color:#1768b2;font-weight:700}@media (width<=820px){.guide-hero,.guide-grid{grid-template-columns:1fr}.ecosystem-panel{min-height:220px}}@media (width<=560px){.site-header,.landing-main,.guide-main{width:min(100% - 28px,1120px)}.header-label{display:none}.landing-main{margin-top:4vh}.app-button{border-radius:17px;grid-template-columns:52px 1fr auto;gap:14px;padding:14px}.app-logo{width:52px;height:52px}.app-copy span{font-size:.82rem}.app-arrow{width:32px;height:32px}.guide-hero,.feature-card,.install-card,.manifest-card{padding:22px}.product-heading{align-items:flex-start}.product-heading img{width:58px;height:58px}.feature-list{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}