:root{
  --bg:#f6f2ea;
  --ink:#1e252b;
  --muted:#69727d;
  --line:rgba(30,37,43,.12);
  --green:#11c15b;
  --green-dark:#079947;
  --cream:#fffaf0;
  --orange:#ffb35b;
  --blue:#5f7cff;
  --pink:#ff6f91;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Noto Sans KR',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--ink);padding-bottom:96px}
a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:18px clamp(18px,4vw,56px);background:rgba(246,242,234,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.02em}.brand-mark,.band-icon{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--green);color:white;font-weight:900;box-shadow:0 10px 24px rgba(17,193,91,.26)}.nav{display:flex;gap:24px;font-weight:700;color:#4b5560}.nav a{font-size:14px}.hero{min-height:760px;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center;padding:72px clamp(20px,5vw,78px) 54px;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(255,179,91,.32),rgba(255,179,91,0) 70%);right:-140px;top:70px}.hero:after{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(17,193,91,.18),rgba(17,193,91,0) 70%);left:-120px;bottom:10px}.hero-copy,.hero-card{position:relative;z-index:2}.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;font-size:14px;font-weight:900;color:var(--green-dark);letter-spacing:.02em}.eyebrow:before,.section-kicker:before{content:"";width:9px;height:9px;border-radius:99px;background:var(--green)}h1{margin:0;font-size:clamp(44px,7vw,86px);line-height:.98;letter-spacing:-.075em;font-weight:900}h1 span{background:linear-gradient(90deg,#079947,#ff8a3d);-webkit-background-clip:text;background-clip:text;color:transparent}.lead{max-width:620px;margin:24px 0 0;font-size:20px;line-height:1.75;color:#46515c;font-weight:500}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}.primary-btn,.secondary-btn,.band-cta{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:16px 24px;font-weight:900;transition:.2s transform,.2s box-shadow}.primary-btn{background:#20272e;color:white;box-shadow:0 16px 32px rgba(30,37,43,.18)}.secondary-btn{background:white;border:1px solid var(--line);color:#222}.primary-btn:hover,.secondary-btn:hover,.band-cta:hover,.floating-band:hover{transform:translateY(-2px)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:36px;max-width:640px}.stats div{padding:18px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:24px}.stats strong{display:block;font-size:24px}.stats span{display:block;margin-top:4px;color:var(--muted);font-weight:700;font-size:13px}.hero-card{height:560px;display:grid;place-items:center}.stack-card{position:absolute;width:min(430px,88%);min-height:215px;padding:30px;border-radius:34px;color:white;box-shadow:0 28px 70px rgba(31,38,45,.22);border:1px solid rgba(255,255,255,.3)}.stack-card .tag{display:inline-flex;border-radius:999px;padding:8px 12px;background:rgba(255,255,255,.22);font-weight:900;font-size:13px}.stack-card h2{margin:36px 0 10px;font-size:32px;letter-spacing:-.04em}.stack-card p{margin:0;line-height:1.6;color:rgba(255,255,255,.86);font-weight:700}.card-one{transform:rotate(-8deg) translate(-45px,-80px);background:linear-gradient(135deg,#243b55,#141e30)}.card-two{transform:rotate(6deg) translate(28px,40px);background:linear-gradient(135deg,#079947,#11c15b)}.card-three{transform:rotate(-2deg) translate(-8px,150px);background:linear-gradient(135deg,#ff8a3d,#ff5f6d)}.section{padding:76px clamp(20px,5vw,78px)}.intro{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;background:#fffaf0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.intro h2,.section-heading h2,.band-panel h2{margin:0;font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-.055em}.intro p:last-child{margin:34px 0 0;font-size:18px;line-height:1.9;color:#505b66;font-weight:500}.section-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:30px}.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.book-card{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:32px;overflow:hidden;box-shadow:0 20px 48px rgba(30,37,43,.08)}.book-cover{height:220px;display:grid;place-items:center;color:white;font-size:42px;font-weight:900;letter-spacing:-.08em}.gradient-1{background:linear-gradient(135deg,#141e30,#526d82)}.gradient-2{background:linear-gradient(135deg,#ff8a3d,#ffc371)}.gradient-3{background:linear-gradient(135deg,#11c15b,#5fdf89)}.book-body{padding:26px}.book-body h3{margin:0 0 12px;font-size:24px;letter-spacing:-.04em}.book-body p{margin:0 0 16px;color:#56616c;line-height:1.7}.book-body ul{margin:0;padding-left:18px;color:#39434d;font-weight:700;line-height:1.8}.method{background:#20272e;color:white}.method .section-kicker{color:#7dffb5}.method .section-kicker:before{background:#7dffb5}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:30px;border-radius:30px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}.step span{display:inline-block;color:#7dffb5;font-weight:900;margin-bottom:26px}.step h3{margin:0 0 10px;font-size:24px}.step p{margin:0;color:rgba(255,255,255,.72);line-height:1.75}.band-section{padding:82px clamp(20px,5vw,78px)}.band-panel{display:flex;justify-content:space-between;align-items:center;gap:36px;padding:46px;border-radius:40px;background:linear-gradient(135deg,#079947,#11c15b);color:white;box-shadow:0 28px 70px rgba(17,193,91,.28)}.band-panel p:not(.section-kicker){max-width:720px;line-height:1.8;color:rgba(255,255,255,.88);font-weight:600}.section-kicker.light{color:white}.section-kicker.light:before{background:white}.band-cta{background:white;color:#079947;white-space:nowrap;box-shadow:0 16px 34px rgba(0,0,0,.16)}.footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:32px clamp(20px,5vw,78px);border-top:1px solid var(--line);color:#64707b;font-weight:600}.footer div{display:flex;gap:18px}.floating-band{position:fixed;z-index:60;right:22px;bottom:22px;display:inline-flex;align-items:center;gap:10px;border-radius:999px;padding:12px 20px 12px 12px;background:var(--green);color:#fff;font-weight:900;box-shadow:0 18px 44px rgba(17,193,91,.42),0 0 0 6px rgba(17,193,91,.12);transition:.2s transform}.floating-band .band-icon{background:white;color:var(--green-dark);box-shadow:none;width:38px;height:38px;border-radius:14px}@media (max-width:900px){.nav{display:none}.hero{grid-template-columns:1fr;min-height:auto;padding-top:48px}.hero-card{height:430px}.stats,.book-grid,.steps{grid-template-columns:1fr}.intro,.band-panel{display:block}.section-heading{display:block}.band-cta{margin-top:22px;width:100%}.footer{display:block;text-align:center}.footer div{justify-content:center;margin-top:14px}.floating-band{left:18px;right:18px;justify-content:center}.stack-card{width:min(360px,90%)}.card-one{transform:rotate(-7deg) translate(-18px,-60px)}.card-two{transform:rotate(5deg) translate(16px,38px)}.card-three{transform:rotate(-2deg) translate(0,128px)}}