:root {
--black: #0a0a0a;
--white: #ffffff;
--gray-50: #f7f7f5;
--gray-100: #efefec;
--gray-200: #e0e0da;
--gray-400: #b0b0a8;
--gray-600: #6b6b63;
--text: #0a0a0a;
--text-sub: #5a5a52;
--text-muted: #9a9a92;
--gold: #c4871a;
--gold-light: #fdf8f0;
--radius: 4px;
--radius-lg: 8px;
--max-w: 1060px;
--header-h: 60px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: 'Noto Sans KR', sans-serif; background: var(--white); color: var(--text); font-size: 16px; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h); background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-100); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.site-logo { font-family: 'Helvetica Neue', Arial, sans-serif; font-size: 1.1rem; font-weight: 700; color: var(--black); letter-spacing: -0.01em; }
.site-nav { display: flex; align-items: center; gap: 0; }
.site-nav a { font-size: 0.85rem; font-weight: 400; color: var(--gray-600); padding: 6px 12px; transition: color 0.15s; white-space: nowrap; }
.site-nav a:hover { color: var(--text); }
.nav-book { margin-left: 6px; background: var(--black) !important; color: var(--white) !important; padding: 7px 16px !important; border-radius: var(--radius); font-weight: 700 !important; }
.nav-book:hover { opacity: 0.8; }
.nav-menu-btn { display: none; background: none; border: none; cursor: pointer; font-size: 0.9rem; color: var(--gray-600); padding: 6px 10px; }
.mobile-menu { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--white); border-bottom: 2px solid var(--gray-200); z-index: 99; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 24px; font-size: 0.95rem; color: var(--gray-600); border-bottom: 1px solid var(--gray-100); }
.mobile-menu a:last-child { color: var(--gold); font-weight: 700; border-bottom: none; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 26px; border-radius: var(--radius); font-size: 0.92rem; font-weight: 700; transition: all 0.15s; cursor: pointer; border: none; white-space: nowrap; font-family: 'Noto Sans KR', sans-serif; }
.btn--primary { background: var(--black); color: var(--white); }
.btn--primary:hover { opacity: 0.8; }
.btn--gold { background: var(--gold); color: var(--white); }
.btn--gold:hover { background: #a87016; }
.btn--outline { background: transparent; color: var(--text); border: 1.5px solid var(--gray-200); }
.btn--outline:hover { border-color: var(--black); }
.btn--lg { padding: 15px 34px; font-size: 1rem; }
.section-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 32px; display: flex; align-items: center; gap: 14px; }
.section-label::after { content: ''; flex: 1; height: 1px; background: var(--gray-200); }
.hero { padding: calc(var(--header-h) + 80px) 0 72px; }
.hero__eyebrow { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 20px; }
.hero__title { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 900; line-height: 1.15; letter-spacing: -0.04em; color: var(--black); margin-bottom: 18px; }
.hero__title em { font-style: normal; color: var(--gold); }
.hero__desc { font-size: 1rem; color: var(--text-sub); line-height: 1.9; margin-bottom: 32px; max-width: 500px; font-weight: 300; }
.hero__actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__trust { display: flex; gap: 24px; flex-wrap: wrap; padding-top: 28px; border-top: 1px solid var(--gray-100); }
.hero__trust-item { font-size: 0.78rem; color: var(--text-muted); }
.hero__trust-item strong { color: var(--text); font-size: 0.88rem; display: block; font-weight: 700; margin-bottom: 2px; }
.section { padding: 80px 0; }
.section--alt { background: var(--gray-50); }
.section--dark { background: var(--black); color: var(--white); }
.section__title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 900; line-height: 1.2; letter-spacing: -0.03em; color: var(--black); margin-bottom: 12px; }
.section--dark .section__title { color: var(--white); }
.section__desc { font-size: 0.95rem; color: var(--text-sub); line-height: 1.85; max-width: 500px; font-weight: 300; }
.problem-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--gray-200); border: 1px solid var(--gray-200); margin: 36px 0; }
.problem-item { background: var(--white); padding: 28px 24px; }
.problem-item__icon { font-size: 1.3rem; margin-bottom: 12px; }
.problem-item__title { font-size: 0.95rem; font-weight: 700; color: var(--black); margin-bottom: 6px; line-height: 1.4; }
.problem-item__desc { font-size: 0.82rem; color: var(--text-sub); line-height: 1.7; font-weight: 300; }
.problem-answer { border-left: 3px solid var(--gold); padding: 20px 24px; background: var(--gold-light); margin-top: 8px; }
.problem-answer__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); margin-bottom: 8px; }
.problem-answer__text { font-size: 1rem; color: var(--text); line-height: 1.85; }
.problem-answer__text strong { font-weight: 700; }
.diag-section { background: var(--black); padding: 80px 0; }
.diag-section__eyebrow { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 16px; }
.diag-section__title { font-size: clamp(1.8rem,3.5vw,2.6rem); font-weight: 900; line-height: 1.2; letter-spacing: -0.03em; color: var(--white); margin-bottom: 14px; }
.diag-section__desc { font-size: 0.95rem; color: rgba(255,255,255,0.6); line-height: 1.85; max-width: 480px; font-weight: 300; margin-bottom: 36px; }
.diag-steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: rgba(255,255,255,0.08); margin-bottom: 36px; }
.diag-step { padding: 24px 20px; background: var(--black); }
.diag-step__num { font-family: 'Helvetica Neue', Arial, sans-serif; font-size: 0.72rem; font-weight: 700; color: var(--gold); letter-spacing: 0.08em; margin-bottom: 10px; }
.diag-step__title { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.diag-step__desc { font-size: 0.8rem; color: rgba(255,255,255,0.5); line-height: 1.65; font-weight: 300; }
.book-cta { background: var(--black); border-radius: var(--radius-lg); padding: 52px 56px; color: var(--white); display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.book-cta__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; }
.book-cta__title { font-size: clamp(1.4rem,2.5vw,2rem); font-weight: 900; line-height: 1.25; letter-spacing: -0.025em; margin-bottom: 12px; }
.book-cta__desc { font-size: 0.88rem; color: rgba(255,255,255,0.6); line-height: 1.85; font-weight: 300; }
.book-cta__side { text-align: center; flex-shrink: 0; }
.book-cta__price { font-family: 'Helvetica Neue', Arial, sans-serif; font-size: 2.2rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.book-cta__price-sub { font-size: 0.72rem; color: rgba(255,255,255,0.4); margin-bottom: 18px; }
.inline-book-cta { border-top: 2px solid var(--black); padding: 32px 0; margin-top: 48px; }
.inline-book-cta__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold); margin-bottom: 10px; }
.inline-book-cta__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.inline-book-cta__desc { font-size: 0.88rem; color: var(--text-sub); margin-bottom: 20px; line-height: 1.75; font-weight: 300; }
.cat-list { display: flex; flex-direction: column; }
.cat-item { display: grid; grid-template-columns: 130px 1fr auto; align-items: center; gap: 28px; padding: 26px 0; border-bottom: 1px solid var(--gray-100); transition: all 0.15s; }
.cat-item:hover { padding-left: 8px; }
.cat-item:hover .cat-item__title { color: var(--gold); }
.cat-item__num { font-family: 'Helvetica Neue', Arial, sans-serif; font-size: 0.72rem; font-weight: 700; color: var(--text-muted); letter-spacing: 0.05em; }
.cat-item__title { font-size: 1.05rem; font-weight: 700; color: var(--black); margin-bottom: 4px; transition: color 0.15s; }
.cat-item__desc { font-size: 0.83rem; color: var(--text-sub); font-weight: 300; }
.cat-item__arrow { font-size: 1.1rem; color: var(--text-muted); transition: transform 0.15s; }
.cat-item:hover .cat-item__arrow { transform: translateX(4px); color: var(--gold); }
.post-list { display: flex; flex-direction: column; }
.post-item { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--gray-100); transition: all 0.15s; }
.post-item:hover .post-item__title { color: var(--gold); }
.post-item__cat { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 5px; }
.post-item__title { font-size: 0.97rem; font-weight: 700; color: var(--black); margin-bottom: 4px; line-height: 1.4; transition: color 0.15s; }
.post-item__desc { font-size: 0.82rem; color: var(--text-muted); font-weight: 300; }
.post-item__date { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }
.hub-header { padding: calc(var(--header-h) + 60px) 0 44px; }
.hub-header__label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 14px; }
.hub-header__title { font-size: clamp(2rem,4vw,2.8rem); font-weight: 900; letter-spacing: -0.035em; margin-bottom: 12px; line-height: 1.15; }
.hub-header__desc { font-size: 0.95rem; color: var(--text-sub); max-width: 480px; line-height: 1.85; font-weight: 300; }
.hub-divider { height: 1px; background: var(--gray-200); }
.post-header { padding: calc(var(--header-h) + 60px) 0 36px; border-bottom: 1px solid var(--gray-100); }
.post-header__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 14px; }
.post-header__title { font-size: clamp(1.7rem,4vw,2.6rem); font-weight: 900; line-height: 1.18; letter-spacing: -0.03em; margin-bottom: 14px; }
.post-header__meta { display: flex; gap: 14px; font-size: 0.78rem; color: var(--text-muted); }
.post-body { padding: 44px 0 80px; max-width: 700px; }
.post-body h2 { font-size: 1.4rem; font-weight: 900; margin: 44px 0 14px; letter-spacing: -0.02em; padding-top: 8px; border-top: 1px solid var(--gray-100); }
.post-body h2:first-child { border-top: none; margin-top: 0; }
.post-body h3 { font-size: 1.05rem; font-weight: 700; margin: 28px 0 10px; }
.post-body p { margin-bottom: 18px; line-height: 1.95; color: var(--text-sub); font-weight: 300; }
.post-body p strong { color: var(--text); font-weight: 700; }
.post-body ul, .post-body ol { margin: 12px 0 18px 0; list-style: none; }
.post-body li { padding: 5px 0 5px 16px; border-left: 2px solid var(--gray-200); margin-bottom: 6px; font-size: 0.94rem; color: var(--text-sub); font-weight: 300; line-height: 1.7; }
.post-body li strong { color: var(--text); font-weight: 700; }
.post-body blockquote { border-left: 3px solid var(--gold); padding: 14px 18px; margin: 22px 0; font-size: 0.95rem; color: var(--text-sub); background: var(--gold-light); border-radius: 0 var(--radius) var(--radius) 0; line-height: 1.8; }
.post-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.88rem; }
.post-body table th { text-align: left; padding: 10px 0; font-weight: 700; border-bottom: 2px solid var(--black); }
.post-body table td { padding: 11px 0; color: var(--text-sub); border-bottom: 1px solid var(--gray-100); }
.related-posts { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--gray-100); font-size: 0.88rem; color: var(--text-muted); }
.related-posts a { color: var(--gold); font-weight: 700; margin-right: 4px; }
.breadcrumb { padding: calc(var(--header-h) + 16px) 0 0; font-size: 0.78rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { margin: 0 6px; }
.footer { border-top: 1px solid var(--gray-200); padding: 40px 0 28px; }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; flex-wrap: wrap; margin-bottom: 20px; }
.footer__brand { font-family: 'Helvetica Neue', Arial, sans-serif; font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.footer__tagline { font-size: 0.78rem; color: var(--text-muted); font-weight: 300; }
.footer__nav { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.footer__nav a { font-size: 0.82rem; color: var(--text-muted); }
.footer__nav a:hover { color: var(--text); }
.footer__copy { font-size: 0.75rem; color: var(--text-muted); }
.fade-up { opacity: 0; transform: translateY(16px); transition: opacity 0.5s, transform 0.5s; }
.fade-up.visible { opacity: 1; transform: none; }
@media (max-width: 768px) {
.problem-grid { grid-template-columns: 1fr; }
.diag-steps { grid-template-columns: 1fr; }
.cat-item { grid-template-columns: 1fr auto; gap: 14px; }
.cat-item__num { display: none; }
.post-item { grid-template-columns: 1fr; }
.book-cta { grid-template-columns: 1fr; padding: 32px 24px; gap: 24px; }
.site-nav a:not(.nav-book):not(.nav-menu-btn) { display: none; }
.nav-menu-btn { display: flex; }
}
#ebookFloat{position:fixed;right:20px;bottom:82px;z-index:9998;display:flex;align-items:center;gap:8px;padding:14px 20px;background:var(--black,#111);color:#fff;border-radius:50px;font-size:.92rem;font-weight:900;text-decoration:none;box-shadow:0 4px 16px rgba(0,0,0,.18);transition:transform .15s,box-shadow .15s;font-family:'Noto Sans KR',sans-serif;}
#ebookFloat:hover{transform:translateY(-3px);box-shadow:0 6px 22px rgba(0,0,0,.28);}
#ebookFloat .ef-icon{font-size:1.15rem;line-height:1;}
@media(max-width:600px){#ebookFloat{right:14px;bottom:70px;padding:13px 16px;}#ebookFloat .ef-text{display:none;}#ebookFloat .ef-icon{font-size:1.35rem;}}
#kakaoFloat{position:fixed;right:20px;bottom:20px;z-index:9999;display:flex;align-items:center;gap:8px;padding:14px 20px;background:#FEE500;color:#191600;border-radius:50px;font-size:.92rem;font-weight:900;text-decoration:none;box-shadow:0 4px 16px rgba(0,0,0,.18);transition:transform .15s,box-shadow .15s;font-family:'Noto Sans KR',sans-serif;}
#kakaoFloat:hover{transform:translateY(-3px);box-shadow:0 6px 22px rgba(0,0,0,.24);}
#kakaoFloat .kf-icon{font-size:1.2rem;line-height:1;}
@media(max-width:600px){#kakaoFloat{right:14px;bottom:14px;padding:13px 16px;}#kakaoFloat .kf-text{display:none;}#kakaoFloat .kf-icon{font-size:1.4rem;}}