.landing{--ground:#f6f8fc;--ink:#0d1b35;--soft:#42506a;--ice:#e4edfb;--cobalt:#1f5ec6;--teal:#087f94;--navy:#0d1b35;--paper:#fff;--on-field:#fff;--accent:#2061c8;--on-accent:#fff;--line:#d5dcea;--ring-1:#dce8fb;--ring-2:#c2d7f8;--ring-3:#8fb6f2;--ring-4:#2061c8;--panel:#fff;--panel-ink:#0d1b35;--panel-soft:#4a5872;--panel-line:#d5dcea;--auth-card:#fff;--auth-ink:#0d1b35;--auth-soft:#4a5872;--auth-line:#d5dcea;--auth-field:#fff;--auth-accent:#2061c8;--auth-on-accent:#fff;--gutter:clamp(20px,4vw,64px);background:var(--ground);color:var(--ink);scroll-behavior:smooth;min-height:100svh;font-family:DM Sans,sans-serif;font-size:18px;line-height:1.55;overflow-x:clip}.landing[data-theme=dark]{--ground:#0b1322;--ink:#f2f6ff;--soft:#c1cce0;--ice:#14233f;--cobalt:#17478f;--teal:#06606f;--navy:#060c19;--paper:#101b30;--accent:#8cbcff;--on-accent:#0b1322;--line:#2c3b58;--ring-1:#142442;--ring-2:#1a3159;--ring-3:#234a88;--ring-4:#8cbcff;--panel:#121d33;--panel-ink:#f2f6ff;--panel-soft:#b6c2d8;--panel-line:#30405f;--auth-card:#121d33;--auth-ink:#f2f6ff;--auth-soft:#b6c2d8;--auth-line:#30405f;--auth-field:#0d1729;--auth-accent:#8cbcff;--auth-on-accent:#0b1322}.landing h1,.landing h2{letter-spacing:-.035em;margin:0;font-family:Manrope,sans-serif;font-weight:800}.landing :is(a,button,summary,input):focus-visible{outline-offset:3px;outline:3px solid}.landing :where(a){color:inherit}.landing[data-theme=dark] .platform-brand__logo--light{display:none}.landing[data-theme=dark] .platform-brand__logo--dark,.landing[data-theme=light] .platform-brand__logo--light{display:block}.landing[data-theme=light] .platform-brand__logo--dark{display:none}.landing-nav{z-index:20;min-height:68px;padding:0 var(--gutter);background:var(--ground);align-items:center;gap:24px;display:flex;position:sticky;top:0}.landing-brand{align-items:center;min-height:44px;display:inline-flex}.landing-brand .platform-brand{width:172px}.landing-nav nav{gap:4px;margin-left:12px;display:flex}.landing-nav nav a{min-height:44px;color:var(--ink);align-items:center;padding:0 12px;font-size:16px;text-decoration:none;display:inline-flex}.landing-nav nav a:hover{text-underline-offset:4px;text-decoration:underline}.landing-nav-actions{align-items:center;gap:8px;margin-left:auto;display:flex}.landing-theme{width:44px;height:44px;color:var(--ink);cursor:pointer;background:0 0;border:0;border-radius:999px;place-items:center;display:grid}.landing-link{white-space:nowrap;align-items:center;min-height:44px;padding:0 14px;font-size:16px;font-weight:600;text-decoration:none;display:inline-flex}.landing-button,.landing-button-quiet{white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;min-height:44px;padding:0 20px;font-size:16px;font-weight:700;text-decoration:none;transition:transform .16s cubic-bezier(.2,.8,.2,1),background-color .16s;display:inline-flex}.landing-button{background:var(--accent);color:var(--on-accent)}.landing-button-quiet{background:var(--ice);color:var(--ink)}.landing-button-large{min-height:56px;padding:0 30px;font-size:18px}@media (hover:hover){.landing-button:hover,.landing-button-quiet:hover{transform:translateY(-2px)}}.landing-button:active,.landing-button-quiet:active{transform:scale(.97)}.landing-hero{min-height:min(100svh - 172px,760px);padding:clamp(24px,5vh,64px) var(--gutter);grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:center;display:grid;position:relative;overflow:hidden}.landing-hero-copy{z-index:2;position:relative}.landing-hero h1{font-size:clamp(2.3rem,6.1vw,6.6rem);line-height:1}.landing-lead{max-width:34em;color:var(--ink);margin:28px 0 0;font-size:clamp(18px,1.6vw,22px);line-height:1.5}.landing-cta{flex-wrap:wrap;gap:12px;margin-top:32px;display:flex}.landing-hero-art{align-self:stretch;min-height:380px;position:relative}.landing-rings{width:min(62vw,860px);height:auto;position:absolute;top:50%;left:50%;overflow:visible;transform:translate(-44%,-50%)}.ring{stroke:none}.ring-1{fill:var(--ring-1)}.ring-2{fill:var(--ring-2)}.ring-3{fill:var(--ring-3)}.ring-4{fill:var(--ring-4)}.ring-orbit{fill:var(--accent);transform-origin:500px 500px;animation:26s linear infinite landing-orbit}.ring-orbit-2{fill:var(--teal);animation-duration:17s;animation-direction:reverse}.landing-island{width:min(36vw,500px);height:auto;position:absolute;top:58%;left:50%;transform:translate(-44%,-14%)}.landing-astronaut{aspect-ratio:820/1076;width:min(19vw,260px);position:absolute;top:58%;left:50%;transform:translate(-39%,-84%)}@keyframes landing-orbit{to{transform:rotate(360deg)}}.landing-tracks{padding:0 var(--gutter);background:var(--paper);grid-template-columns:repeat(4,minmax(0,1fr));gap:0;display:grid}.landing-tracks a{align-items:center;gap:12px;min-height:88px;font-size:17px;font-weight:600;text-decoration:none;display:flex}.landing-tracks img{object-fit:contain;width:44px;height:44px;transition:transform .2s cubic-bezier(.2,.8,.2,1)}@media (hover:hover){.landing-tracks a:hover img{transform:translateY(-3px)scale(1.06)}}.chapter{padding:clamp(72px,11vh,136px) var(--gutter)}.chapter h2{font-size:clamp(2.1rem,5vw,4.6rem);line-height:1.04}.chapter p{max-width:32em;margin:20px 0 0;font-size:clamp(18px,1.4vw,20px)}.chapter-cobalt{background:var(--cobalt);color:var(--on-field)}.chapter-ice{background:var(--ice)}.chapter-paper{background:var(--paper)}.chapter-teal{background:var(--teal);color:var(--on-field)}.chapter-navy{background:var(--navy);color:#f2f6ff}.chapter-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:clamp(32px,6vw,96px);max-width:1480px;margin:0 auto;display:grid}.chapter-grid-top{align-items:start}.chapter-wide{max-width:1480px;margin:0 auto}.landing-fact{font-weight:700}.layer-lab{background:var(--panel);color:var(--panel-ink);border-radius:24px;padding:clamp(16px,2vw,28px)}.layer-lab-attacks{border:0;flex-wrap:wrap;gap:8px;margin:0 0 16px;padding:0;display:flex}.layer-lab-attacks legend{margin-bottom:10px;padding:0;font-size:16px;font-weight:700}.layer-lab-attacks label{cursor:pointer;position:relative}.layer-lab-attacks input{opacity:0;cursor:pointer;width:100%;height:100%;margin:0;position:absolute;inset:0}.layer-lab-attacks span{background:color-mix(in srgb,var(--panel-ink) 7%,transparent);border-radius:999px;align-items:center;min-height:44px;padding:0 16px;font-size:16px;font-weight:600;transition:background-color .16s;display:flex}.layer-lab-attacks input:checked+span{background:var(--accent);color:var(--on-accent)}.layer-lab-attacks input:focus-visible+span{outline:3px solid var(--accent);outline-offset:2px}.layer-lab-stack{gap:8px;margin:0;padding:0;list-style:none;display:grid}.layer-lab-row{background:color-mix(in srgb,var(--panel-ink) 5%,transparent);min-height:76px;animation:.34s cubic-bezier(.2,.8,.2,1) both layer-enter;animation-delay:calc(var(--i)*.11s);border-radius:14px;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 14px 10px 10px;display:grid}.layer-lab-row.is-idle{box-shadow:inset 0 0 0 1px var(--panel-line);background:0 0}.layer-lab-row.is-stop{background:#0a9f7a29}.layer-lab-state{width:32px;height:32px;color:var(--panel-soft);border-radius:999px;place-items:center;display:grid}.layer-lab-row.is-stop .layer-lab-state{color:#fff;background:#0a7f63}.layer-lab-copy{gap:2px;min-width:0;display:grid}.layer-lab-copy strong{font-size:17px}.layer-lab-copy span{color:var(--panel-soft);font-size:16px;line-height:1.4}.layer-lab-switch{background:color-mix(in srgb,var(--panel-ink) 28%,transparent);cursor:pointer;border:0;border-radius:999px;width:52px;height:32px;padding:0;transition:background-color .16s;position:relative}.layer-lab-switch:before{content:"";position:absolute;inset:-6px}.layer-lab-switch i{background:#fff;border-radius:999px;width:24px;height:24px;transition:transform .18s cubic-bezier(.2,.8,.2,1);position:absolute;top:4px;left:4px}.layer-lab-switch[aria-checked=true]{background:var(--accent)}.layer-lab-switch[aria-checked=true] i{transform:translate(20px)}.layer-lab-switch:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.chapter .layer-lab-result{border-radius:14px;max-width:none;margin:14px 0 0;padding:14px 16px;font-size:16px;line-height:1.45}.layer-lab-result strong{display:block}.layer-lab-result.is-safe{background:#0a9f7a24}.layer-lab-result.is-lost{background:#d9302524}@keyframes layer-enter{0%{opacity:0;transform:translateY(8px)}}.landing-plate{margin:0}.landing-plate img{background:var(--panel);border-radius:20px;width:100%;height:auto;display:block}.chapter-grid-flip>:first-child{order:0}.landing-stages{grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;margin:48px 0 0;padding:0;list-style:none;display:grid}.landing-stage-bar{background:color-mix(in srgb,var(--accent) calc(100% - var(--i)*22%),var(--teal));min-height:96px;color:var(--on-field);align-items:flex-end;padding:16px 20px;display:flex}.landing[data-theme=dark] .landing-stage-bar{color:#0b1322}.landing-stages li:first-child .landing-stage-bar{border-radius:16px 0 0 16px}.landing-stages li:last-child .landing-stage-bar{border-radius:0 16px 16px 0}.landing-stage-bar strong{letter-spacing:-.02em;font-family:Manrope,sans-serif;font-size:clamp(22px,2.2vw,32px);font-weight:800}.landing-stages p{margin:18px 20px 0 0;font-size:17px}.landing-stages span{margin:12px 20px 0 0;font-size:16px;font-weight:700;display:block}.landing-stages-loading{min-height:220px;margin-top:48px;font-size:16px}.landing-home{gap:12px;display:grid}.landing-home-card{background:var(--panel);color:var(--panel-ink);border-radius:20px;align-items:center;gap:16px;padding:20px;display:flex}.landing-home-card img{object-fit:contain;flex:none;width:56px;height:56px}.landing-home-card strong{font-family:Manrope,sans-serif;font-size:20px;font-weight:800;display:block}.landing-home-card span{color:var(--panel-soft);font-size:16px}.landing-paths{gap:4px;margin:40px 0 0;padding:0;list-style:none;display:grid}.landing-paths li{background:var(--ground);border-radius:16px;grid-template-columns:72px minmax(0,1.3fr) minmax(0,1.6fr) auto;align-items:center;gap:20px;padding:18px 20px;display:grid}.landing-paths img{object-fit:contain;width:64px;height:64px}.landing-paths li:not(.is-open) img{filter:saturate(.35);opacity:.72}.landing-path-name{letter-spacing:-.03em;font-family:Manrope,sans-serif;font-size:clamp(24px,3vw,44px);font-weight:800;line-height:1.1;display:block}.landing-path-provider{color:var(--soft);margin-top:4px;font-size:16px;display:block}.chapter .landing-paths p{color:var(--soft);margin:0;font-size:16px}.landing-paths strong{background:color-mix(in srgb,var(--ink) 8%,transparent);white-space:nowrap;border-radius:999px;justify-self:end;padding:8px 14px;font-size:15px}.landing-paths .is-open strong{background:var(--accent);color:var(--on-accent)}.landing-faq{gap:6px;display:grid}.landing-faq details{background:var(--paper);border-radius:14px}.landing-faq summary{cursor:pointer;align-items:center;min-height:60px;padding:12px 20px;font-size:18px;font-weight:700;list-style:none;display:flex}.landing-faq summary::-webkit-details-marker{display:none}.landing-faq summary:after{content:"+";margin-left:auto;padding-left:16px;font-size:24px;font-weight:500}.landing-faq details[open] summary:after{content:"–"}.landing-faq p{max-width:none;margin:0;padding:0 20px 18px;font-size:17px}.landing-start{justify-self:end;justify-items:start;gap:16px;width:100%;max-width:460px;display:grid}.landing-start p{margin:0}.landing-start a:not(.landing-button){color:inherit;text-underline-offset:3px;cursor:pointer;font-weight:650}.landing-auth{background:var(--auth-card);width:min(100vw - 24px,420px);max-height:calc(100dvh - 24px);color:var(--auth-ink);border:0;border-radius:24px;margin:auto;padding:0;overflow:auto}.landing-auth::backdrop{background:#060c19b8}.landing-auth[open]{animation:.22s cubic-bezier(.2,.8,.2,1) auth-open}.landing-auth .auth-card{width:100%;margin:0;padding:36px 32px 28px;position:relative}.landing-auth h2{letter-spacing:-.02em;color:var(--auth-ink);margin:0 0 20px;font:800 24px/1.2 Manrope,sans-serif}.landing-auth-close{width:44px;height:44px;color:var(--auth-ink);cursor:pointer;background:0 0;border:0;border-radius:999px;place-items:center;display:grid;position:absolute;top:12px;right:12px}@keyframes auth-open{0%{opacity:0;transform:translateY(12px)scale(.98)}}.landing-footer{padding:clamp(40px,7vh,72px) var(--gutter) 28px;background:var(--navy);color:#f2f6ff}.landing-footer-mark{max-width:1480px;margin:0 auto}.landing-footer-mark .platform-brand{width:100%;display:block}.landing-footer-mark .platform-brand__logo{width:100%;height:auto}.landing .landing-footer-mark .platform-brand__logo--light{display:none}.landing .landing-footer-mark .platform-brand__logo--dark{display:block}.landing-footer-row{flex-wrap:wrap;justify-content:space-between;gap:16px 40px;max-width:1480px;margin:28px auto 0;font-size:15px;display:flex}.landing-footer-row p{max-width:44em;margin:0}.landing-footer-row nav{gap:20px;display:flex}.landing-footer-row nav a{align-items:center;min-height:44px;display:inline-flex}[data-rise]{transition:opacity .56s cubic-bezier(.2,.8,.2,1),transform .56s cubic-bezier(.2,.8,.2,1)}[data-rise].is-waiting{opacity:0;transform:translateY(24px)}@media (max-width:1000px){.landing-nav nav{display:none}.chapter-grid{grid-template-columns:minmax(0,1fr)}.landing-start{justify-self:stretch;max-width:none}.landing-stages{grid-template-columns:repeat(2,minmax(0,1fr))}.landing-stages li .landing-stage-bar{border-radius:0}.landing-stages li:first-child .landing-stage-bar{border-radius:16px 0 0}.landing-stages li:nth-child(2) .landing-stage-bar{border-radius:0 16px 0 0}.landing-paths li{grid-template-columns:64px minmax(0,1fr) auto}.landing-paths p{grid-column:2/-1}}@media (max-width:760px){.landing{font-size:17px}.landing-nav{gap:8px;min-height:60px}.landing-brand .platform-brand{width:136px}.landing-link{padding:0 8px;font-size:15px}.landing-nav .landing-button{padding:0 14px;font-size:15px}.landing-hero{flex-direction:column;align-items:stretch;min-height:0;padding-top:28px;padding-bottom:0;display:flex}.landing-hero h1{font-size:clamp(2rem,10.3vw,5rem)}.landing-hero-art{min-height:340px;margin:12px calc(var(--gutter)*-1) 0;overflow:hidden}.landing-rings{width:640px;transform:translate(-50%,-44%)}.landing-island{width:320px;top:66%;transform:translate(-50%,-20%)}.landing-astronaut{width:170px;top:66%;transform:translate(-46%,-88%)}.landing-cta .landing-button-large,.landing-cta .landing-button-quiet{flex:100%}.landing-tracks{grid-template-columns:repeat(2,minmax(0,1fr));padding-top:8px;padding-bottom:8px}.landing-tracks a{gap:8px;min-height:64px;font-size:15px}.landing-tracks img{width:36px;height:36px}.layer-lab{border-radius:20px}.landing-paths li{grid-template-columns:52px minmax(0,1fr);gap:12px;padding:14px}.landing-paths img{width:52px;height:52px}.landing-paths p{grid-column:1/-1}.landing-paths strong{grid-column:1/-1;justify-self:start}}@media (max-width:430px){.landing-nav{gap:2px}.landing-brand .platform-brand{width:118px}.landing-link{padding:0 6px}.landing-theme{width:40px}.landing-nav .landing-button{padding:0 12px}}@media (max-width:380px){.landing-link{display:none}.landing-stages{grid-template-columns:minmax(0,1fr)}.landing-stages li .landing-stage-bar,.landing-stages li:first-child .landing-stage-bar,.landing-stages li:nth-child(2) .landing-stage-bar,.landing-stages li:last-child .landing-stage-bar{border-radius:16px;min-height:64px}}@media (prefers-reduced-motion:reduce){.landing{scroll-behavior:auto}.ring-orbit,.layer-lab-row,.landing-auth[open]{animation:none}.landing-button,.landing-button-quiet,[data-rise],.landing-tracks img,.layer-lab-switch i{transition:none}[data-rise].is-waiting{opacity:1;transform:none}}