:root{--bg: #f7f8f6;--surface: #ffffff;--ink: #1b2520;--muted: #617069;--line: #dde5df;--accent: #d86b32;--accent-dark: #a94e21;--green: #315d4c;--soft: #eef3ef;--code: #17201c;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.75}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(14px);background:color-mix(in srgb,var(--bg) 88%,transparent);border-bottom:1px solid var(--line)}.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.01em}.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:var(--code);color:#fff;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px}.nav{display:flex;gap:24px;color:var(--muted);font-size:14px;font-weight:700}.nav a:hover{color:var(--ink)}.hero{padding:92px 0 70px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:72px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--green);font-size:13px;font-weight:800}h1{margin:22px 0 20px;font-size:clamp(42px,6vw,76px);line-height:1.07;letter-spacing:-.055em}.hero-lead{max-width:680px;color:var(--muted);font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:12px;font-weight:800;border:1px solid var(--line);background:#fff}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 10px 24px #d86b322e}.btn.primary:hover{background:var(--accent-dark)}.code-card{position:relative;padding:22px;border-radius:22px;background:var(--code);color:#eaf1ec;box-shadow:0 28px 80px #1e32282e;transform:rotate(1.5deg)}.code-dots{display:flex;gap:7px;margin-bottom:24px}.code-dots span{width:10px;height:10px;border-radius:50%;background:#617069}.code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:clamp(13px,1.5vw,16px);line-height:1.8;white-space:pre-wrap}.code .kw{color:#ffb37c}.code .str{color:#b6e59c}.code .type{color:#8fd5ff}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:54px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}.stat{padding:20px;background:#fff}.stat strong{display:block;font-size:24px}.stat span{color:var(--muted);font-size:13px}.section{padding:50px 0}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:32px}.section-head h2{margin:0;font-size:clamp(30px,4vw,46px);letter-spacing:-.04em}.section-head p{max-width:520px;margin:0;color:var(--muted)}.path-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.path{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px}.path-kicker{color:var(--accent-dark);font-weight:800;font-size:12px;letter-spacing:.08em}.path h3{margin:8px 0;font-size:22px}.path p{margin:0;color:var(--muted);font-size:14px}.lesson-list{margin-top:18px;display:grid;gap:7px}.lesson{display:flex;gap:12px;align-items:baseline;padding:9px 0;border-top:1px solid #edf0ee;font-size:14px}.lesson-num{min-width:28px;color:#93a098;font-family:ui-monospace,monospace}.principle{background:var(--green);color:#fff;border-radius:28px;padding:48px;display:grid;grid-template-columns:.6fr 1.3fr;gap:48px;align-items:center}.principle .big{font-size:clamp(54px,9vw,100px);font-weight:900;letter-spacing:-.07em;line-height:.9;text-align:center}.principle h2{margin:0 0 10px;font-size:34px}.principle p{margin:0;color:#dce8e2}.footer{padding:42px 0 70px;color:var(--muted);font-size:13px}@media(max-width:820px){.nav{display:none}.hero{padding-top:64px}.hero-grid,.principle{grid-template-columns:1fr;gap:32px}.code-card{transform:none}.path-grid{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:12px}.stats{grid-template-columns:1fr}}