:root {
  --ink: #122033;
  --muted: #5d6b7d;
  --blue: #1457d9;
  --blue-dark: #0d3f9f;
  --blue-soft: #eaf1ff;
  --green: #087b5b;
  --cream: #f6f8fc;
  --white: #fff;
  --line: #dfe5ee;
  --shadow: 0 14px 36px rgba(26, 48, 84, .08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: Pretendard, "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.68;
  word-break: keep-all;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button, input { font: inherit; }
.wrap { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 999; padding: 10px 14px; background: #fff; color: #000; border-radius: 8px; }
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid rgba(223, 229, 238, .9);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 900; font-size: 1.22rem; letter-spacing: -.04em; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, #1457d9, #5c83ec); box-shadow: 0 9px 20px rgba(20, 87, 217, .22); }
.brand small { display: block; margin-top: -4px; color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .04em; }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a { padding: 9px 12px; border-radius: 9px; color: #3c4b5f; font-size: .94rem; font-weight: 750; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--blue); background: var(--blue-soft); }
.menu-button { display: none; border: 0; background: var(--blue-soft); color: var(--blue-dark); border-radius: 10px; padding: 9px 12px; font-weight: 800; }

.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: #081b3a;
  color: #fff;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(90deg, rgba(6, 24, 54, .98) 0%, rgba(8, 37, 80, .91) 48%, rgba(10, 49, 106, .56) 100%), var(--hero-image, none);
  background-position: center;
  background-size: cover;
}
.hero::after { content: ""; position: absolute; right: -8%; bottom: -55%; z-index: -1; width: 520px; height: 520px; border-radius: 50%; background: rgba(65, 124, 255, .2); filter: blur(8px); }
.hero-inner { padding-block: 82px 76px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; color: #cfe0ff; font-size: .89rem; font-weight: 850; letter-spacing: .02em; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #70d6b2; box-shadow: 0 0 0 5px rgba(112, 214, 178, .15); }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(2.35rem, 5vw, 4.4rem); line-height: 1.08; letter-spacing: -.055em; }
.hero-lead { max-width: 690px; margin: 20px 0 0; color: #d4def0; font-size: clamp(1rem, 1.7vw, 1.15rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 10px 17px; border: 1px solid transparent; border-radius: 11px; background: var(--blue); color: #fff; font-weight: 850; }
.button:hover { background: var(--blue-dark); transform: translateY(-1px); }
.button.light { background: #fff; color: #12366d; }
.button.outline { background: transparent; border-color: rgba(255,255,255,.3); color: #fff; }
.button.small { min-height: 38px; padding: 7px 12px; font-size: .88rem; }
.trust-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; max-width: 790px; margin-top: 40px; }
.trust-item { padding: 14px 15px; border: 1px solid rgba(255,255,255,.15); border-radius: 13px; background: rgba(255,255,255,.08); }
.trust-item strong { display: block; font-size: .95rem; }
.trust-item span { display: block; margin-top: 2px; color: #bfcee3; font-size: .78rem; }

.main { padding-block: 54px 20px; }
.section { margin-top: 58px; }
.section:first-child { margin-top: 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 20px; }
.section-head h2 { margin: 0; font-size: clamp(1.52rem, 2.5vw, 2.12rem); line-height: 1.25; letter-spacing: -.045em; }
.section-head p { max-width: 650px; margin: 7px 0 0; color: var(--muted); }
.text-link { flex: 0 0 auto; color: var(--blue); font-weight: 800; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.surface { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.intro-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 20px; }
.intro-copy { padding: clamp(24px, 4vw, 38px); }
.intro-copy h2 { margin: 0 0 13px; font-size: clamp(1.55rem, 2.7vw, 2.2rem); line-height: 1.28; letter-spacing: -.045em; }
.intro-copy p { margin: 0; color: var(--muted); }
.intro-copy p + p { margin-top: 12px; }
.intro-media { min-height: 330px; overflow: hidden; }
.intro-media img { width: 100%; height: 100%; min-height: 330px; object-fit: cover; display: block; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.pill { padding: 6px 10px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-dark); font-size: .82rem; font-weight: 800; }

.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.category-card { min-height: 170px; padding: 21px; border: 1px solid var(--line); border-radius: 15px; background: #fff; transition: .2s ease; }
.category-card:hover { border-color: #a9c2f6; box-shadow: var(--shadow); transform: translateY(-2px); }
.category-symbol { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--blue-soft); color: var(--blue-dark); font-size: .88rem; font-weight: 950; }
.category-card h3 { margin: 14px 0 6px; font-size: 1.03rem; }
.category-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.category-card .count { display: block; margin-top: 12px; color: var(--green); font-size: .78rem; font-weight: 800; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature { padding: 25px; }
.feature b { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-bottom: 13px; border-radius: 10px; background: #eef3fb; color: var(--blue-dark); }
.feature h3 { margin: 0 0 7px; font-size: 1.04rem; }
.feature p { margin: 0; color: var(--muted); font-size: .91rem; }
.notice { padding: 18px 20px; border-left: 4px solid var(--green); background: #edf9f5; color: #245547; border-radius: 10px; }

.page-hero { padding-block: 55px 48px; background: linear-gradient(135deg, #0b285d, #174fae); color: #fff; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; color: #c8d7ee; font-size: .84rem; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.page-hero h1 { margin: 0; font-size: clamp(2.15rem, 4vw, 3.55rem); line-height: 1.12; letter-spacing: -.055em; }
.page-hero p { max-width: 760px; margin: 17px 0 0; color: #d9e5f7; font-size: 1.04rem; }
.meta-line { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 20px; color: #c9d8ef; font-size: .84rem; }

.directory-tools { position: sticky; top: 85px; z-index: 12; margin-bottom: 25px; padding: 15px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.96); box-shadow: 0 9px 28px rgba(20, 43, 75, .08); backdrop-filter: blur(12px); }
.search-control { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.search-control input { min-width: 0; padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 10px; color: var(--ink); background: #fff; }
.search-control input:focus { outline: 3px solid rgba(20,87,217,.16); border-color: var(--blue); }
.filter-row { display: flex; gap: 7px; overflow-x: auto; margin-top: 11px; padding-bottom: 2px; scrollbar-width: thin; }
.filter-button { flex: 0 0 auto; border: 1px solid var(--line); border-radius: 999px; padding: 7px 11px; background: #fff; color: #465568; font-size: .82rem; font-weight: 780; cursor: pointer; }
.filter-button[aria-pressed="true"], .filter-button:hover { border-color: var(--blue); background: var(--blue-soft); color: var(--blue-dark); }
.result-status { margin: 12px 0 0; color: var(--muted); font-size: .85rem; }
.directory-section { scroll-margin-top: 180px; margin-top: 40px; }
.directory-section[hidden], .site-card[hidden] { display: none !important; }
.directory-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 13px; }
.directory-title h2 { margin: 0; font-size: 1.37rem; letter-spacing: -.035em; }
.directory-title p { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }
.directory-title span { flex: 0 0 auto; color: var(--green); font-size: .79rem; font-weight: 850; }
.site-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }
.site-card { position: relative; display: flex; flex-direction: column; min-height: 210px; padding: 20px; border: 1px solid var(--line); border-radius: 15px; background: #fff; transition: .18s ease; }
.site-card:hover { border-color: #a9c2f6; box-shadow: var(--shadow); transform: translateY(-2px); }
.site-card-top { display: flex; align-items: center; gap: 11px; }
.site-initial { display: grid; place-items: center; flex: 0 0 auto; width: 39px; height: 39px; border-radius: 11px; background: linear-gradient(135deg, #e9f0ff, #f3f6fb); color: var(--blue-dark); font-weight: 950; }
.site-card h3 { margin: 0; font-size: 1rem; }
.domain { display: block; color: var(--green); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .74rem; }
.site-card p { margin: 14px 0 16px; color: var(--muted); font-size: .88rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 5px; margin-top: auto; }
.tag { padding: 3px 7px; border-radius: 7px; background: #f0f3f8; color: #586679; font-size: .7rem; }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 13px; padding-top: 11px; border-top: 1px solid #edf0f5; color: #718096; font-size: .73rem; }
.external-mark { color: var(--blue); font-weight: 850; }
.no-results { display: none; padding: 42px 20px; text-align: center; color: var(--muted); }
.no-results.visible { display: block; }

.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 28px; align-items: start; }
.article { padding: clamp(24px, 4vw, 42px); }
.article h2 { margin: 38px 0 10px; font-size: 1.42rem; letter-spacing: -.035em; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 26px 0 7px; font-size: 1.08rem; }
.article p, .article li { color: #3f4e61; }
.article ul, .article ol { padding-left: 21px; }
.article a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.check-list { list-style: none; padding: 0 !important; }
.check-list li { position: relative; padding: 12px 14px 12px 42px; border: 1px solid var(--line); border-radius: 11px; background: #f9fbfe; }
.check-list li + li { margin-top: 9px; }
.check-list li::before { content: "✓"; position: absolute; left: 14px; top: 11px; color: var(--green); font-weight: 950; }
.info-table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: .91rem; }
.info-table th, .info-table td { padding: 11px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.info-table th { background: #f0f4fa; }
.side-card { position: sticky; top: 100px; padding: 19px; }
.side-card h2 { margin: 0 0 10px; font-size: 1rem; }
.side-card a { display: block; padding: 8px 0; color: var(--blue); font-size: .89rem; font-weight: 750; }
.side-card a + a { border-top: 1px solid #edf0f5; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.guide-card { padding: 23px; }
.guide-card small { color: var(--green); font-weight: 850; }
.guide-card h2, .guide-card h3 { margin: 7px 0 8px; font-size: 1.15rem; }
.guide-card p { margin: 0; color: var(--muted); font-size: .9rem; }

.site-footer { margin-top: 72px; padding-block: 42px; background: #0d1d33; color: #d3deec; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 28px; }
.site-footer strong { color: #fff; }
.site-footer p { max-width: 650px; margin: 9px 0 0; color: #aebdd0; font-size: .87rem; }
.footer-links { display: flex; flex-wrap: wrap; align-content: start; justify-content: flex-end; gap: 8px 16px; }
.footer-links a { color: #d6e3f3; font-size: .86rem; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.copyright { margin-top: 27px !important; padding-top: 19px; border-top: 1px solid rgba(255,255,255,.12); }

@media (max-width: 950px) {
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .content-layout { grid-template-columns: 1fr; }
  .side-card { position: static; }
}

@media (max-width: 720px) {
  .wrap { width: min(100% - 28px, 1160px); }
  .header-inner { min-height: 64px; }
  .menu-button { display: block; }
  .site-nav { display: none; position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch; gap: 3px; padding: 15px 14px 20px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 12px; }
  .hero-inner { padding-block: 60px 58px; }
  .trust-row, .feature-grid { grid-template-columns: 1fr; }
  .intro-grid { grid-template-columns: 1fr; }
  .intro-media { min-height: 230px; }
  .intro-media img { min-height: 230px; }
  .section-head { align-items: start; flex-direction: column; gap: 8px; }
  .directory-tools { top: 75px; }
  .search-control { grid-template-columns: 1fr; }
  .site-grid, .guide-grid { grid-template-columns: 1fr; }
  .site-card { min-height: 190px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 460px) {
  .category-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.35rem; }
  .page-hero h1 { font-size: 2.05rem; }
  .brand small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}