:root{--ink: #1d2433;--ink2: #4b566b;--line: #e3e7ef;--card: #ffffff;--accent: #6c5ce7;--hot: #ff7a59;--bg1: #fffaf1;--bg2: #eef5ff;--shadow: 0 6px 24px rgba(40, 50, 90, .1);--radius: 16px;--header: 72px;color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:linear-gradient(160deg,var(--bg1),var(--bg2));line-height:1.5}#root{min-height:100vh}a{color:var(--accent)}a:hover{color:#3d2eb8}:focus-visible{outline:3px solid #2f7bff;outline-offset:2px}.skip{position:absolute;left:12px;top:-48px;z-index:100;background:#fff;color:var(--ink);padding:8px 12px;border-radius:10px;font-weight:700}.skip:focus{top:12px}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;min-height:var(--header);padding:12px 24px;background:#ffffffdb;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:1.15rem;letter-spacing:-.02em;text-decoration:none}.brand:hover{color:var(--ink)}.mark{flex:none}.nav{display:flex;align-items:center;gap:16px;margin-left:auto}.nav a{color:var(--ink2);font-weight:650;text-decoration:none}.nav a:hover{color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:2px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:8px 14px;font:inherit;font-weight:700;text-decoration:none;transition:transform .12s ease,box-shadow .12s ease}.btn:hover{color:var(--ink);transform:translateY(-1px);box-shadow:0 4px 10px #28325a1f}.btn.hot{background:var(--hot);border-color:var(--hot);color:#1d2433}.btn.hot:hover{color:#1d2433}.btn.lg{padding:12px 18px;font-size:1.05rem}main{width:min(1080px,calc(100% - 32px));margin:0 auto;padding-bottom:48px}section{scroll-margin-top:calc(var(--header) + 12px);padding:56px 0 8px}.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:36px;align-items:center;padding-top:48px}.hero-copy,.tree-card,.grove,.grove-row{min-width:0}.eyebrow{margin:0 0 8px;font-size:.85rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#c2410c}h1{margin:0;font-size:clamp(2.1rem,4.4vw,3.35rem);line-height:1.08;letter-spacing:-.03em}.lede{margin:16px 0 0;font-size:1.125rem;color:var(--ink2);max-width:38rem}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.tree-card{margin:0;background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:22px 18px 16px}.grove{display:flex;flex-direction:column;gap:12px}.grove-row{display:flex;justify-content:center;gap:10px}.tile{position:relative;width:132px;min-height:68px;border-radius:14px;border:2.5px solid var(--c);background:#fff;overflow:hidden;padding:8px 9px 7px;display:flex;flex-direction:column;justify-content:center;box-shadow:0 2px #00000012;color:var(--ink)}.tile .fill{position:absolute;left:0;right:0;bottom:0;height:var(--fill, 0%);background:color-mix(in srgb,var(--c) 50%,transparent)}.tile>:not(.fill){position:relative;z-index:1}.tile .nm{font-size:.82rem;font-weight:700;line-height:1.2}.tile.t0{border-style:dashed;border-color:#b3bbcc}.tile.t4{border-width:3.5px;box-shadow:0 0 0 3px #ffc93c8c,0 4px 10px #28325a1f}.tile.t4 .fill{background:color-mix(in srgb,var(--c) 78%,transparent)}.tree-card figcaption{margin-top:14px;color:var(--ink2);font-size:.92rem}.section-head h2{margin:0;font-size:clamp(1.6rem,2.4vw,2rem);letter-spacing:-.02em}.section-head p{margin:8px 0 0;color:var(--ink2);max-width:40rem}.feature-grid,.course-grid,.project-grid{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:14px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid li,.course-grid li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 18px 16px}.feature-grid h3,.course-grid h3{margin:0;font-size:1.05rem;letter-spacing:-.01em}.feature-grid p,.course-grid p{margin:8px 0 0;color:var(--ink2)}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.project-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.project-grid a{display:flex;flex-direction:column;gap:4px;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;color:var(--ink);text-decoration:none}.project-grid a:hover{color:var(--ink);border-color:var(--accent);transform:translateY(-1px)}.kicker{font-size:.78rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:#c2410c}.project-title{font-weight:750;letter-spacing:-.01em}.site-footer{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:8px 0 36px;color:var(--ink2)}.site-footer p{margin:0;padding-top:20px;border-top:1px solid var(--line)}@media(max-width:840px){:root{--header: 128px}.site-header{flex-wrap:wrap;padding:12px 16px}.nav{order:3;width:100%;margin-left:0}.hero,.feature-grid,.course-grid{grid-template-columns:1fr}.tile{width:min(132px,30vw)}main,.site-footer{width:min(1080px,calc(100% - 24px))}}@media(max-width:360px){:root{--header: 180px}}@media(max-width:420px){.grove-row{gap:6px}.tile{width:auto;flex:1 1 0;min-width:0;min-height:64px;padding:6px}.tile .nm{font-size:.72rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.project-grid a{transition:none}.btn:hover,.project-grid a:hover{transform:none}}