:root{
  --bg:#f4f8fb;
  --bg2:#eaf3f4;
  --paper:#ffffff;
  --paper2:#f8fbfd;
  --text:#1e293b;
  --muted:#5b6779;
  --line:#dbe5ea;
  --line-strong:#b8c7d1;
  --brand:#0f766e;
  --brand-dark:#0a4f4a;
  --brand-soft:#dff6f3;
  --accent:#0f4c81;
  --accent-soft:#e7f1fb;
  --shadow:0 18px 44px rgba(15, 76, 129, .10);
  --shadow-sm:0 8px 24px rgba(15, 76, 129, .08);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(15,118,110,.12), transparent 30%),
    radial-gradient(circle at right top, rgba(15,76,129,.12), transparent 24%),
    linear-gradient(180deg,#fbfeff 0%,var(--bg) 100%);
  line-height:1.72;
  word-break:keep-all;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.skip-link{
  position:absolute;left:12px;top:-44px;z-index:1000;background:var(--brand);color:#fff;
  padding:10px 14px;border-radius:12px;font-weight:700
}
.skip-link:focus{top:10px}
.container{width:min(100%,var(--container));margin:0 auto;padding:0 22px}
.topbar{
  background:#0b1727;color:#dce7f5;font-size:14px;border-bottom:1px solid rgba(255,255,255,.08)
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:46px}
.topbar strong{color:#fff}
header.site-header{
  position:sticky;top:0;z-index:999;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(15,76,129,.10)
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:82px
}
.brand-wrap{display:flex;flex-direction:column;gap:5px}
.brand{font-size:30px;font-weight:900;letter-spacing:-.04em}
.brand-sub{font-size:13px;color:var(--muted)}
nav.main-nav{display:flex;flex-wrap:wrap;gap:18px;justify-content:center}
nav.main-nav a{font-size:15px;font-weight:800;color:#334155}
nav.main-nav a:hover{color:var(--brand)}
.btn,.btn-outline,.tel-link{
  display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 18px;border-radius:999px;
  font-weight:900;transition:.2s ease;box-shadow:var(--shadow-sm)
}
.btn{background:var(--brand);color:#fff}
.btn:hover{transform:translateY(-1px);background:var(--brand-dark)}
.btn-outline{border:1px solid var(--line-strong);background:#fff}
.btn-outline:hover{transform:translateY(-1px);border-color:var(--brand)}
.tel-link{background:#0b1727;color:#fff}
.hero{padding:42px 0 18px}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) 360px;gap:24px;align-items:stretch
}
.hero-main,.hero-side,.section-card,.post-card,.faq-item,.info-card,.mini-card,.cta-box,.toc-card,.article-card{
  background:var(--paper);
  border:1px solid rgba(15,76,129,.10);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow)
}
.hero-main{
  padding:42px;
  background:
    radial-gradient(circle at top left, rgba(15,118,110,.12), transparent 36%),
    linear-gradient(180deg,#ffffff 0%,#f7fbff 100%);
}
.hero-main h1,.article-hero h1{
  margin:0 0 16px;
  font-size:clamp(34px,4.2vw,56px);
  line-height:1.08;
  letter-spacing:-.05em
}
.lead{font-size:18px;color:#334155;margin:0 0 22px}
.hero-points,.cluster-list,.check-list,.faq-list,.quick-grid,.region-grid,.post-grid,.stats-grid,.article-grid,.content-grid,.step-grid,.info-grid{
  display:grid;gap:16px
}
.hero-points{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:28px}
.pill,.eyebrow,.chip{
  display:inline-flex;align-items:center;gap:8px;
  min-height:34px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:800
}
.pill{background:var(--brand-soft);color:var(--brand-dark)}
.eyebrow{background:var(--accent-soft);color:var(--accent)}
.chip{background:#f4f6f8;border:1px solid var(--line)}
.hero-side{padding:28px;display:flex;flex-direction:column;gap:18px}
.hero-side h2,.section-title{margin:0;font-size:28px;letter-spacing:-.04em}
.hero-side p,.section-copy,.post-card p,.info-card p,.article-card p,.faq-item p,.toc-card p{margin:0;color:var(--muted)}
.side-list,.footer-links,.coverage-list,.related-links{display:flex;flex-wrap:wrap;gap:10px}
.side-list span,.footer-links a,.related-links a{
  border:1px solid var(--line);background:#fff;padding:9px 12px;border-radius:999px;font-weight:700;font-size:14px
}
.section{padding:18px 0}
.section-card{padding:34px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}
.section-head p{max-width:780px;color:var(--muted);margin:0}
.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{
  padding:24px;border-radius:22px;background:var(--paper2);border:1px solid rgba(15,118,110,.12)
}
.stat strong{display:block;font-size:31px;line-height:1.1;letter-spacing:-.04em;color:var(--brand-dark)}
.stat span{display:block;margin-top:8px;color:var(--muted);font-weight:700}
.cluster-list{grid-template-columns:repeat(3,minmax(0,1fr))}
.info-card{padding:24px}
.info-card h3,.post-card h3,.faq-item h3,.article-card h2,.article-section h2{margin:0 0 12px;font-size:24px;letter-spacing:-.04em}
.info-card ul,.article-section ul,.article-section ol{margin:0;padding-left:20px;color:#334155}
.region-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.region-box{
  border:1px solid rgba(15,76,129,.10);background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);
  border-radius:24px;padding:24px
}
.region-box h3{margin:0 0 10px;font-size:22px}
.region-box p{margin:0 0 12px;color:var(--muted)}
.coverage-list span{background:#fff;border:1px solid var(--line);padding:8px 10px;border-radius:999px;font-size:13px;font-weight:700}
.quick-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.mini-card{padding:20px}
.mini-card strong{display:block;font-size:18px;margin-bottom:8px}
.post-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.post-card{padding:24px}
.post-card h3{font-size:21px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag-row span{
  background:#f4f6f8;border:1px solid var(--line);padding:7px 10px;border-radius:999px;font-size:12px;font-weight:800;color:#475569
}
.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-weight:900;color:var(--brand-dark)}
.step-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.step{
  padding:24px;border-radius:22px;background:linear-gradient(180deg,#fff 0%,#f7fbfd 100%);
  border:1px solid rgba(15,118,110,.12)
}
.step-index{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-dark);font-weight:900;margin-bottom:14px
}
.cta-box{
  padding:34px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:linear-gradient(135deg,#0f766e 0%,#0f4c81 100%);color:#fff
}
.cta-box p{margin:0;opacity:.92}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-box .btn,.cta-box .btn-outline{box-shadow:none}
.cta-box .btn{background:#fff;color:#0f4c81}
.cta-box .btn-outline{border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.06);color:#fff}
.faq-list{grid-template-columns:repeat(3,minmax(0,1fr))}
.faq-item{padding:24px}
footer.site-footer{padding:26px 0 60px}
.footer-card{
  padding:28px;border-radius:28px;background:#0b1727;color:#dce7f5;box-shadow:var(--shadow)
}
.footer-card h2{margin:0 0 12px;font-size:26px;color:#fff}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
.footer-card p{margin:0 0 14px;color:#c7d4e6}
.footer-links a{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.14)}
.notice{font-size:13px;color:#d2dae5;opacity:.9}

/* article */
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 14px;color:#64748b;font-weight:700;font-size:14px
}
.article-hero{
  padding:32px;border-radius:var(--radius-xl);background:linear-gradient(180deg,#fff 0%,#f6fbfd 100%);
  border:1px solid rgba(15,76,129,.10);box-shadow:var(--shadow)
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}
.article-meta span{padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;font-weight:800}
.content-grid{grid-template-columns:minmax(0,1fr) 320px;align-items:start}
.article-card{padding:30px}
.article-intro{font-size:18px;color:#334155;margin-bottom:24px}
.article-section{padding-top:10px;border-top:1px solid var(--line);margin-top:20px}
.article-section:first-of-type{margin-top:0;padding-top:0;border-top:0}
.article-section h2{font-size:28px}
.article-section p{margin:0 0 12px;color:#334155}
.article-section li{margin:8px 0}
.note-box{
  padding:18px 20px;border-radius:18px;background:var(--brand-soft);border:1px solid rgba(15,118,110,.18);color:#0a4f4a;font-weight:700
}
.toc-card{position:sticky;top:108px;padding:24px}
.toc-card h3{margin:0 0 12px;font-size:20px}
.toc-card nav{display:flex;flex-direction:column;gap:10px}
.toc-card nav a{
  padding:11px 12px;border:1px solid var(--line);border-radius:14px;background:#fff;font-weight:800
}
.cta-strip{
  margin-top:22px;padding:20px;border-radius:20px;background:#0b1727;color:#fff;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between
}
.cta-strip .btn,.cta-strip .btn-outline{box-shadow:none}
.related{
  margin-top:28px;padding-top:24px;border-top:1px solid var(--line)
}
.related h3{margin:0 0 14px}
@media (max-width:1180px){
  .hero-grid,.content-grid,.footer-grid{grid-template-columns:1fr}
  .toc-card{position:relative;top:auto}
  .post-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .quick-grid,.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
  .topbar .container,.header-inner,.section-head,.cta-box{flex-direction:column;align-items:flex-start}
  nav.main-nav{justify-content:flex-start}
  .hero-points,.cluster-list,.stats-grid,.faq-list,.region-grid,.post-grid,.quick-grid,.step-grid{grid-template-columns:1fr}
  .hero-main{padding:30px}
  .section-card,.article-card,.faq-item,.post-card,.hero-side{padding:22px}
  .brand{font-size:26px}
  .hero-main h1,.article-hero h1{font-size:36px}
}


.service-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.service-badges span{
  border:1px solid rgba(15,118,110,.18);
  background:#f3fbfa;
  color:#0a4f4a;
  padding:10px 14px;
  border-radius:999px;
  font-weight:800;
  font-size:14px
}
.notice-box{
  padding:18px 20px;
  border-radius:20px;
  background:linear-gradient(180deg,#f8fbff 0%,#ffffff 100%);
  border:1px solid rgba(15,76,129,.10)
}
.notice-box strong{display:block;margin-bottom:10px;font-size:18px}
.notice-box-muted{background:linear-gradient(180deg,#fff9f2 0%,#ffffff 100%)}
.service-checks{margin:0;padding-left:18px;color:#334155}
.service-checks li{margin:7px 0}
.info-card{padding:24px}
.info-card h3,.post-card h3,.faq-item h3{margin:0 0 10px;font-size:22px;letter-spacing:-.03em}
.mini-card{padding:22px}
.mini-card strong{display:block;margin-bottom:8px;font-size:19px;letter-spacing:-.03em}
.mini-card p{margin:0;color:#475569}
.post-card{padding:24px;display:block}
.post-card h3{margin:0 0 10px}
.post-card p{margin:0}
.post-card:hover{transform:translateY(-2px)}
.faq-item{padding:24px}
.cta-box{
  background:linear-gradient(135deg,#0f766e 0%,#0b1727 100%);
  color:#fff;
  border:none
}
.cta-box .section-title,
.cta-box .section-copy{color:#fff}
.cta-box .pill{
  background:rgba(255,255,255,.14);
  color:#fff
}
.btn-light{
  background:#fff;
  color:#0b1727
}
.btn-light:hover{background:#f3f7fb}
.btn-outline-light{
  border-color:rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);
  color:#fff
}
.btn-outline-light:hover{
  border-color:#fff;
  background:rgba(255,255,255,.14)
}

@media (max-width: 900px){
  .quick-grid[style], .post-grid[style], .step-grid[style]{grid-template-columns:1fr !important}
}