:root{--ink:#17251e;--muted:#617067;--paper:#f5f3eb;--white:#fff;--lime:#c8f04b;--forest:#153d2a;--line:#d8ddd6;--radius:22px;--shadow:0 20px 60px rgba(23,37,30,.1);font-family:Arial,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--paper);font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button,input{font:inherit}.skip-link{position:fixed;left:1rem;top:-5rem;background:var(--ink);color:#fff;padding:.75rem 1rem;z-index:100}.skip-link:focus{top:1rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{position:sticky;top:0;z-index:20;background:rgba(245,243,235,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(23,37,30,.08)}.header-inner{max-width:1240px;margin:auto;height:78px;padding:0 28px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--ink);color:var(--lime);font-weight:900}.brand strong,.brand small{display:block}.brand strong{font-size:.83rem;letter-spacing:.12em}.brand small{font-size:.68rem;color:var(--muted)}nav{display:flex;align-items:center;gap:30px;font-size:.88rem;font-weight:700}nav a:not(.nav-cta):hover{color:#36764d}.nav-cta{padding:10px 18px;background:var(--ink);color:#fff;border-radius:999px}.hero{max-width:1240px;min-height:720px;margin:auto;padding:90px 28px 80px;display:grid;grid-template-columns:1.03fr .97fr;align-items:center;gap:70px}.eyebrow{display:flex;align-items:center;gap:10px;margin:0 0 22px;color:#567060;font-size:.72rem;font-weight:800;letter-spacing:.17em}.eyebrow span{width:28px;height:2px;background:var(--lime)}h1{margin:0;font-size:clamp(3rem,6.1vw,5.8rem);line-height:1.02;letter-spacing:-.065em}h1 em{color:#3c7850;font-style:normal}.hero-desc{max-width:580px;margin:32px 0;color:var(--muted);font-size:1.08rem;line-height:1.85;word-break:keep-all}.hero-actions{display:flex;align-items:center;gap:24px}.button{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:52px;padding:0 22px;font-weight:800;border-radius:999px}.button.primary{background:var(--lime);color:var(--ink)}.button.text{padding:0;border-radius:0;border-bottom:1px solid var(--ink)}.button:hover{transform:translateY(-2px)}.hero-facts{display:flex;margin:56px 0 0;padding:26px 0 0;border-top:1px solid var(--line)}.hero-facts div{padding-right:30px;margin-right:30px;border-right:1px solid var(--line)}.hero-facts div:last-child{border:0}.hero-facts dt{font-size:.73rem;color:var(--muted)}.hero-facts dd{margin:2px 0 0;font-weight:800}.hero-visual{position:relative;min-height:520px;border-radius:40% 40% 22% 22%;overflow:hidden;background:var(--forest);box-shadow:var(--shadow)}.visual-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,#000,transparent)}.orb{position:absolute;border-radius:50%;filter:blur(2px)}.orb-a{width:300px;height:300px;right:-45px;top:30px;background:var(--lime);opacity:.85}.orb-b{width:250px;height:250px;left:-60px;bottom:-50px;border:55px solid rgba(255,255,255,.12)}.code-card{position:absolute;left:50%;top:50%;width:min(380px,76%);padding:20px 24px 28px;transform:translate(-50%,-45%) rotate(-3deg);background:rgba(255,255,255,.93);border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.24)}.code-dot{display:inline-block;width:8px;height:8px;margin-right:5px;border-radius:50%;background:#bfc6c0}.code-card p{margin:60px 0 34px;font-family:monospace;font-size:1rem}.code-card b{color:#66a02c}.code-lines{display:grid;gap:10px}.code-lines i{display:block;height:7px;border-radius:9px;background:#dce2dc}.code-lines i:nth-child(1){width:80%}.code-lines i:nth-child(2){width:55%;background:#dff092}.code-lines i:nth-child(3){width:70%}.float-label{position:absolute;padding:9px 14px;background:#fff;border-radius:999px;font-size:.68rem;font-weight:900;letter-spacing:.12em}.label-one{top:70px;left:28px}.label-two{right:25px;bottom:70px;background:var(--lime)}.courses-section{padding:110px max(28px,calc((100vw - 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