:root{--ink:#18212b;--muted:#6f7b86;--line:#e5e8eb;--soft:#f6f8f9;--accent:#2f6f68;--accent2:#dcefeb;--white:#fff;--max:1160px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans KR","Apple SD Gothic Neo",sans-serif;color:var(--ink);background:#fff;line-height:1.65}a{text-decoration:none;color:inherit}.container{max-width:var(--max);margin:auto;padding:0 28px}.site-header{height:76px;border-bottom:1px solid rgba(229,232,235,.8);background:rgba(255,255,255,.94);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.logo{font-weight:800;letter-spacing:.08em;font-size:20px;display:flex;align-items:center;gap:8px}.logo span{color:var(--accent)}.logo-img{height:36px;width:auto;display:block}.logo-text{display:none}.footer-logo-img{height:28px;width:auto;display:block;margin-bottom:4px}nav{display:flex;gap:28px;font-size:14px;color:#4d5963}nav a:hover{color:var(--accent)}.menu-btn{display:none;border:0;background:none;font-size:24px}.hero{background:linear-gradient(135deg,#f7fbfa,#eef6f4);padding:90px 0 100px}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:80px;align-items:center}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--accent);margin:0 0 13px}.hero h1{font-size:clamp(40px,5.2vw,68px);line-height:1.12;letter-spacing:-.055em;margin:0 0 24px}.hero h1 strong{color:var(--accent)}.hero-copy{font-size:18px;color:#5e6a74;max-width:650px}.hero-actions{display:flex;gap:12px;margin:30px 0 16px}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 22px;border-radius:9px;border:1px solid transparent;font-weight:700;cursor:pointer;font:inherit}.btn.primary{background:var(--accent);color:#fff}.btn.secondary{background:#fff;border-color:#d7dfe0}.notice{font-size:12px;color:#7b858d}.hero-card{background:#fff;border:1px solid #e0e8e6;border-radius:22px;padding:30px;box-shadow:0 20px 60px rgba(33,65,61,.08)}.card-label{font-size:10px;letter-spacing:.16em;color:var(--accent);font-weight:800}.hero-card h2{font-size:25px;letter-spacing:-.03em;margin:8px 0 25px}.step-mini{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line)}.step-mini span{font-size:12px;color:var(--accent);font-weight:800}.step-mini b{display:block}.step-mini small{display:block;color:var(--muted);margin-top:2px}.section{padding:100px 0}.soft{background:var(--soft)}.section-head{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:42px}.section-head h2{font-size:38px;letter-spacing:-.045em;margin:0}.section-head>p{max-width:430px;color:var(--muted);margin:0;font-size:14px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.timeline article{padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:190px}.timeline span,.info-card>span{font-size:11px;color:var(--accent);font-weight:800}.timeline h3{margin:14px 0 7px;font-size:21px}.timeline p,.info-card p{margin:0;color:var(--muted);font-size:14px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.info-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:14px;min-height:260px;transition:.2s}.info-card:hover{transform:translateY(-4px);border-color:#b7d1cd}.info-card h3{font-size:22px;margin:18px 0 9px}.info-card b{display:block;color:var(--accent);font-size:13px;margin-top:24px}.search-box{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;padding:18px;background:#f7f9f9;border:1px solid var(--line);border-radius:14px}.search-box label{font-size:12px;font-weight:700}.search-box select{display:block;width:100%;margin-top:7px;height:48px;padding:0 12px;border:1px solid #dfe5e7;border-radius:8px;background:#fff;font:inherit}.search-box .btn{align-self:end}.empty-result{margin-top:18px;border:1px dashed #cfd9d8;border-radius:14px;padding:45px;text-align:center;color:var(--muted)}.empty-result span{font-weight:800;color:var(--ink)}.empty-result p{font-size:14px}.guide-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:90px}.guide-grid h2{font-size:38px;letter-spacing:-.045em;margin:0 0 15px}.guide-grid>div>p:not(.eyebrow){color:var(--muted)}.guide-list{border-top:1px solid var(--line)}.guide-list div{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);font-size:14px}.guide-list span{color:var(--muted)}.disclaimer{padding:30px 0;background:#f1f3f4}.disclaimer b{font-size:13px}.disclaimer p{font-size:12px;color:#68737c;margin:7px 0 0}footer{padding:35px 0}.container small{display:block;color:#89929a;font-size:11px;margin-top:6px}
@media(max-width:800px){nav{display:none}.menu-btn{display:block}.hero{padding:65px 0 70px}.hero-grid,.guide-grid{grid-template-columns:1fr;gap:38px}.hero h1{font-size:43px}.hero-copy{font-size:16px}.section{padding:70px 0}.section-head{display:block;margin-bottom:28px}.section-head h2,.guide-grid h2{font-size:31px}.section-head>p{margin-top:12px}.timeline{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.search-box{grid-template-columns:1fr}.search-box .btn{width:100%}.guide-list div{grid-template-columns:1fr;gap:4px}.container{padding:0 20px}}
@media(max-width:480px){.cards{grid-template-columns:1fr}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-card{padding:23px}}

.article-page{max-width:900px;margin:0 auto;padding:72px 22px 100px;line-height:1.85}.article-page .eyebrow{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--accent)}.article-page h1{font-size:clamp(34px,5vw,56px);line-height:1.2;letter-spacing:-.045em;margin:10px 0 20px}.article-page .lead{font-size:18px;color:#59656f}.article-page h2{font-size:29px;letter-spacing:-.035em;margin:58px 0 16px}.article-page h3{font-size:21px;margin:34px 0 10px}.article-page p,.article-page li{font-size:16px}.article-page ul{padding-left:22px}.source-box{background:#f6f8f9;border:1px solid #e2e7e9;border-radius:16px;padding:20px 22px;margin:28px 0}.source-box strong{display:block;margin-bottom:6px}.article-figure{margin:34px 0}.article-figure img{display:block;width:100%;max-width:900px;margin:0 auto;border:1px solid #dfe4e6;border-radius:12px}.article-figure figcaption{font-size:13px;color:#74808a;margin-top:9px}.article-page .cta{background:#18212b;color:#fff;border-radius:18px;padding:26px;margin-top:50px}.article-page .cta p{color:#d9e0e4;margin-bottom:0}.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.compare-card{border:1px solid #e2e6e8;border-radius:15px;padding:20px}.compare-card h3{margin-top:0}.backlink{display:inline-block;margin-bottom:28px;font-weight:700;color:var(--accent)}@media(max-width:700px){.article-page{padding:45px 20px 70px}.article-page h2{font-size:25px;margin-top:44px}.article-page p,.article-page li{font-size:15px}.compare-grid{grid-template-columns:1fr}}

.table-wrap{overflow-x:auto;margin:28px 0}.protocol-table{width:100%;border-collapse:collapse;min-width:700px;font-size:14px}.protocol-table th,.protocol-table td{border:1px solid #dfe4e6;padding:12px 10px;text-align:left;vertical-align:top}.protocol-table th{font-weight:800;background:#f7f9f9}.article-page .timeline{display:grid;gap:0;border:0}.article-page .timeline>div{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid #e6e9eb}.article-page .timeline span{color:#59656f;font-size:15px}.article-page .timeline strong{font-size:14px}@media(max-width:700px){.protocol-table{font-size:13px;min-width:620px}.article-page .timeline>div{grid-template-columns:1fr;gap:4px}}

/* V16 — post-op position guide */
.article-page .article-figure img { max-width:100%; height:auto; display:block; }

/* V22 — homepage information architecture */
.hero-clean{padding:82px 0 88px}
.hero-map .step-mini{display:flex;color:inherit}
.hero-map a:hover{background:#f7fbfa;margin:0 -12px;padding-left:12px;padding-right:12px;border-radius:10px}
.categories-section{padding-top:82px}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.category-card{display:flex;flex-direction:column;min-height:210px;padding:27px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:.2s}
.category-card:hover{transform:translateY(-4px);border-color:#b7d1cd;box-shadow:0 14px 35px rgba(33,65,61,.07)}
.category-card span,.feature-card span{font-size:10px;letter-spacing:.12em;color:var(--accent);font-weight:800}
.category-card h3{font-size:25px;letter-spacing:-.035em;margin:16px 0 8px}.category-card p{margin:0;color:var(--muted);font-size:14px}.category-card b{margin-top:auto;color:var(--accent);font-size:13px;padding-top:24px}
.category-main{background:linear-gradient(135deg,#f1f8f6,#fff)}
.featured-section{background:#fff}.feature-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:16px}
.feature-card{display:flex;flex-direction:column;min-height:250px;padding:28px;border-radius:18px;border:1px solid var(--line);background:#fff}.feature-card.large{background:#18212b;color:#fff;border-color:#18212b}.feature-card.large span,.feature-card.large b{color:#bfe3dc}.feature-card h3{font-size:24px;line-height:1.35;letter-spacing:-.035em;margin:17px 0 10px}.feature-card p{color:var(--muted);font-size:14px;margin:0}.feature-card.large p{color:#d3dbe0}.feature-card b{margin-top:auto;color:var(--accent);font-size:13px;padding-top:22px}
.category-section{scroll-margin-top:80px}.article-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.body-grid{grid-template-columns:repeat(4,1fr)}.article-grid .info-card{min-height:225px}.section-cta{display:inline-flex;margin-top:25px;padding:14px 20px;border-radius:10px;background:var(--accent);color:#fff;font-weight:800;font-size:14px}.hospital-section{padding-top:90px}.page-hero{padding:68px 0 55px;background:linear-gradient(135deg,#f7fbfa,#eef6f4)}.page-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.12;letter-spacing:-.05em;margin:0 0 18px}.page-hero h1 strong{color:var(--accent)}.page-hero>div>p:not(.eyebrow):not(.backlink){max-width:700px;color:var(--muted);font-size:17px}.backlink{margin-top:24px;color:var(--accent)}
@media(max-width:900px){.category-grid{grid-template-columns:1fr 1fr}.feature-grid{grid-template-columns:1fr 1fr}.feature-card.large{grid-column:1/-1}.article-grid,.body-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.category-grid,.feature-grid,.article-grid,.body-grid{grid-template-columns:1fr}.feature-card.large{grid-column:auto}.hero-clean{padding:62px 0 70px}.page-hero{padding:52px 0 42px}}

/* V38 information architecture */
.evidence-meta{margin:24px 0;padding:18px 20px;border:1px solid #e5e5eb;border-radius:16px;background:#fafafd}.evidence-meta>div{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.evidence-meta strong{font-size:13px;letter-spacing:.04em}.evidence-badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#eeeefe;font-size:12px;font-weight:800}.evidence-meta p{margin:8px 0 4px!important;font-size:14px!important;color:#555!important}.evidence-meta small{color:#888}.data-page{padding:48px 20px 90px}.data-head{max-width:900px;margin:0 auto 28px}.data-head h1{font-size:clamp(34px,6vw,56px);line-height:1.12;margin:10px 0}.data-head p{font-size:18px;line-height:1.8;color:#555}.tool-row{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.tool-row input,.tool-row select{padding:13px 14px;border:1px solid #ddd;border-radius:12px;background:#fff;min-width:180px}.data-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.data-card{display:block;border:1px solid #e6e6eb;border-radius:18px;padding:20px;background:#fff;text-decoration:none;color:inherit}.data-card h2,.data-card h3{margin:6px 0 8px}.data-card p{line-height:1.7;color:#555}.data-card .meta{font-size:12px;color:#777}.legal-callout{border-left:4px solid #6b63d9;background:#f8f7ff;padding:18px 20px;margin:22px 0}.legal-table{width:100%;border-collapse:collapse;margin:20px 0}.legal-table th,.legal-table td{border-bottom:1px solid #e5e5e8;padding:12px;text-align:left;vertical-align:top;line-height:1.6}.status-red{background:#fff2f2}.status-yellow{background:#fff9e8}.status-green{background:#f1faf4}@media(max-width:680px){.data-grid{grid-template-columns:1fr}.legal-table{font-size:13px}.legal-table th,.legal-table td{padding:9px}}
.evidence-review{margin:42px 0;padding:24px;border:1px solid #dfe4ea;border-radius:18px;background:#f7f9fb}.evidence-review h2{margin:6px 0 10px}.evidence-review>p{line-height:1.75}.evidence-source-list{display:grid;gap:10px;margin:18px 0}.evidence-source-list a{display:block;padding:13px 15px;background:#fff;border:1px solid #e4e8ed;border-radius:12px;color:inherit;text-decoration:none}.evidence-source-list a:hover{border-color:#b8c3cf}.evidence-source-list small{display:block;margin-top:5px;color:#667085;line-height:1.5}.evidence-note{font-size:.9rem;color:#59636e}