/* 40.uassuk.com — 도수치료 정보 사이트 디자인 시스템 (light/medical/trust tone) */
:root{
  --u-primary:#2C5FAE;
  --u-primary-dark:#1F3C66;
  --u-accent:#2E9E83;
  --u-bg:#F7F9FB;
  --u-surface:#FFFFFF;
  --u-text:#22303F;
  --u-text-muted:#5B6B7C;
  --u-border:#E2E8EF;
  --u-radius:14px;
  --u-radius-sm:8px;
  --u-maxw:820px;
  --u-wrap:1120px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Pretendard','Noto Sans KR','Apple SD Gothic Neo',sans-serif;
  background:var(--u-bg);
  color:var(--u-text);
  line-height:1.7;
  word-break:keep-all;
  font-size:16px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.u-wrap{max-width:var(--u-wrap);margin:0 auto;padding:0 20px}

/* header/nav */
.u-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--u-border)}
.u-header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--u-wrap);margin:0 auto;padding:0 20px}
.u-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.15rem;color:var(--u-primary-dark);text-decoration:none}
.u-logo img{width:32px;height:32px;border-radius:8px}
.u-nav{display:flex;gap:22px;list-style:none;margin:0;padding:0}
.u-nav a{font-size:.95rem;font-weight:600;color:var(--u-text-muted);text-decoration:none;padding:8px 2px;border-bottom:2px solid transparent}
.u-nav a:hover,.u-nav a.active{color:var(--u-primary);border-bottom-color:var(--u-primary)}
.u-burger{display:none;background:none;border:0;font-size:1.6rem;color:var(--u-primary-dark);cursor:pointer;min-width:44px;min-height:44px}
@media (max-width:820px){
  .u-nav{position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;max-height:0;overflow:hidden;transition:max-height .25s ease;border-bottom:1px solid var(--u-border)}
  .u-nav.open{max-height:420px}
  .u-nav a{display:block;padding:14px 20px;border-bottom:1px solid var(--u-border);min-height:44px}
  .u-burger{display:block}
}

/* hero */
.u-hero{padding:64px 0 48px;background:linear-gradient(180deg,#EEF3FB 0%,var(--u-bg) 100%)}
.u-hero h1{font-size:2.6rem;font-weight:800;color:var(--u-primary-dark);margin:0 0 14px;text-align:center}
.u-hero p.u-sub{max-width:640px;margin:0 auto 28px;text-align:center;color:var(--u-text-muted);font-size:1.05rem}
.u-hero-ctas{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.u-updated{display:block;text-align:center;color:var(--u-text-muted);font-size:.82rem;margin-top:18px}

/* buttons (brand token) */
.u-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;text-decoration:none;border:2px solid transparent;min-height:44px;transition:transform .15s ease,box-shadow .15s ease}
.u-btn-primary{background:var(--u-primary);color:#fff;box-shadow:0 8px 20px rgba(44,95,174,.25)}
.u-btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(44,95,174,.32)}
.u-btn-accent{background:var(--u-accent);color:#fff;box-shadow:0 8px 20px rgba(46,158,131,.25)}
.u-btn-accent:hover{transform:translateY(-2px)}
.u-btn-outline{background:#fff;color:var(--u-primary);border-color:var(--u-primary)}

/* section titles */
.u-section{padding:52px 0}
.u-section h2{font-size:1.7rem;font-weight:800;color:var(--u-primary-dark);text-align:center;margin:0 0 8px}
.u-section .u-lead{text-align:center;color:var(--u-text-muted);margin:0 0 32px}

/* carousel / itemlist cards */
.u-carousel{display:flex;gap:16px;overflow-x:auto;padding:6px 2px 18px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.u-carousel::-webkit-scrollbar{height:6px}
.u-carousel::-webkit-scrollbar-thumb{background:var(--u-border);border-radius:4px}
.u-card{scroll-snap-align:start;flex:0 0 260px;background:var(--u-surface);border:1px solid var(--u-border);border-radius:var(--u-radius);overflow:hidden;text-decoration:none;color:var(--u-text);box-shadow:0 6px 18px rgba(23,43,77,.06)}
.u-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.u-card-body{padding:16px}
.u-card-tag{font-size:.72rem;font-weight:700;color:var(--u-accent);text-transform:uppercase;letter-spacing:.03em}
.u-card-title{font-size:1.02rem;font-weight:700;margin:6px 0 4px;color:var(--u-primary-dark)}
.u-card-desc{font-size:.86rem;color:var(--u-text-muted);margin:0}

/* grid cards (cluster pages / latest posts) */
.u-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.u-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.u-grid{grid-template-columns:1fr}}

/* article / page content */
.u-article{max-width:var(--u-maxw);margin:0 auto;padding:40px 20px 70px}
.u-article .u-kicker{color:var(--u-accent);font-weight:700;font-size:.85rem;letter-spacing:.02em}
.u-article h1{font-size:2.1rem;font-weight:800;color:var(--u-primary-dark);margin:6px 0 18px;line-height:1.35}
.u-article .u-meta{color:var(--u-text-muted);font-size:.85rem;margin-bottom:28px;display:flex;gap:14px;flex-wrap:wrap}
.u-article h2{font-size:1.5rem;font-weight:800;color:var(--u-primary-dark);margin:44px 0 16px;padding-bottom:10px;border-bottom:2px solid var(--u-border)}
.u-article h3{font-size:1.18rem;font-weight:700;color:var(--u-primary);margin:28px 0 12px}
.u-article p{font-size:1rem;margin:0 0 18px}
.u-article ul,.u-article ol{margin:0 0 18px;padding-left:22px}
.u-article li{margin-bottom:8px}
.u-article figure{margin:26px 0}
.u-article figure img{border-radius:var(--u-radius);box-shadow:0 10px 26px rgba(23,43,77,.10)}
.u-article figcaption{text-align:center;color:var(--u-text-muted);font-size:.82rem;margin-top:8px}
.u-hero-img{width:100%;border-radius:var(--u-radius);margin-bottom:24px;box-shadow:0 12px 30px rgba(23,43,77,.12)}

/* tables */
.u-article table{width:100%;border-collapse:collapse;margin:20px 0 26px;font-size:.92rem;overflow-x:auto;display:block}
.u-article table thead{background:var(--u-primary);color:#fff}
.u-article table th,.u-article table td{padding:11px 14px;border:1px solid var(--u-border);text-align:left}
.u-article table tbody tr:nth-child(even){background:#F5F8FC}
.u-article pre,.u-article code{max-width:100%;overflow-x:auto;display:block;background:#F5F8FC;border-radius:8px;padding:12px}

/* summary / callout boxes */
.u-box{background:#EEF3FB;border-left:4px solid var(--u-primary);border-radius:0 var(--u-radius-sm) var(--u-radius-sm) 0;padding:18px 20px;margin:22px 0}
.u-box-tip{background:#EAF7F2;border-left-color:var(--u-accent)}
.u-box strong{color:var(--u-primary-dark)}
.u-cmp{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}
@media (max-width:560px){.u-cmp{grid-template-columns:1fr}}
.u-cmp>div{border-radius:var(--u-radius-sm);padding:16px}
.u-cmp .pos{background:#EAF7F2;border:1px solid #BFE6D8}
.u-cmp .neg{background:#FBEFEF;border:1px solid #F0C9C9}

/* TOC */
.u-toc{background:var(--u-surface);border:1px solid var(--u-border);border-radius:var(--u-radius);padding:18px 20px;margin:24px 0 34px}
.u-toc-title{font-weight:800;color:var(--u-primary-dark);margin-bottom:10px;font-size:1rem}
.u-toc ol{margin:0;padding-left:20px}
.u-toc a{color:var(--u-text-muted);text-decoration:none;font-size:.92rem}
.u-toc a:hover{color:var(--u-primary)}

/* FAQ */
.u-faq-item{border:1px solid var(--u-border);border-radius:var(--u-radius-sm);padding:16px 18px;margin-bottom:12px;background:var(--u-surface)}
.u-faq-q{font-weight:700;color:var(--u-primary-dark);margin:0 0 8px;display:flex;gap:8px}
.u-faq-q::before{content:'Q';flex:0 0 auto;color:#fff;background:var(--u-primary);width:22px;height:22px;border-radius:50%;font-size:.78rem;display:flex;align-items:center;justify-content:center}
.u-faq-a{margin:0;color:var(--u-text-muted);padding-left:30px}

/* related posts */
.u-related{margin-top:52px}
.u-related h2{font-size:1.3rem}

/* calculator */
.u-calc{background:var(--u-surface);border:1px solid var(--u-border);border-radius:var(--u-radius);padding:26px;margin:26px 0;box-shadow:0 10px 26px rgba(23,43,77,.06)}
.u-calc label{display:block;font-weight:700;font-size:.9rem;color:var(--u-primary-dark);margin:16px 0 6px}
.u-calc select,.u-calc input{width:100%;padding:12px 14px;border:1px solid var(--u-border);border-radius:var(--u-radius-sm);font-size:.95rem;background:#fff;min-height:44px}
.u-calc-result{margin-top:20px;padding:18px 20px;border-radius:var(--u-radius-sm);background:#EEF3FB;border:1px solid #C9DAF1;display:none}
.u-calc-result.show{display:block}
.u-calc-result .u-amount{font-size:1.7rem;font-weight:800;color:var(--u-primary-dark)}
.u-calc-note{font-size:.78rem;color:var(--u-text-muted);margin-top:10px}

/* CTA band (문의는 별도 페이지, 메인엔 버튼만) */
.u-cta-band{background:var(--u-primary-dark);color:#fff;border-radius:var(--u-radius);padding:40px 30px;text-align:center;margin:40px 0}
.u-cta-band h2{color:#fff;font-size:1.4rem}
.u-cta-band p{color:#CBD9EE;margin:0 0 20px}

/* footer */
.u-footer{background:#101B2C;color:#B7C4D8;padding:48px 0 28px;margin-top:60px}
.u-footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px}
.u-footer h4{color:#fff;font-size:.95rem;margin:0 0 12px}
.u-footer ul{list-style:none;margin:0;padding:0}
.u-footer li{margin-bottom:8px}
.u-footer a{color:#B7C4D8;text-decoration:none;font-size:.88rem}
.u-footer a:hover{color:#fff}
.u-footer-bottom{border-top:1px solid #23324A;margin-top:30px;padding-top:20px;font-size:.78rem;color:#7C8BA3;text-align:center}

@media (max-width:600px){
  .u-hero h1{font-size:1.9rem}
  .u-section h2{font-size:1.4rem}
  .u-article h1{font-size:1.55rem}
  .u-article h2{font-size:1.25rem}
  .u-article{padding:26px 16px 50px}
  .u-hero{padding:40px 0 30px}
}