:root {
  --ink: #102033;
  --muted: #5f6d7b;
  --line: #dce5eb;
  --paper: #ffffff;
  --wash: #f3f7f9;
  --navy: #0b2c4f;
  --navy-2: #164c75;
  --lime: #b9ef54;
  --lime-strong: #8bd629;
  --blue: #e9f4ff;
  --danger: #9a3412;
  --radius: 24px;
  --shadow: 0 24px 60px rgba(15, 39, 62, 0.11);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
button, input { font: inherit; }
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 100;
  transform: translateY(-160%); padding: 10px 16px; border-radius: 10px;
  background: var(--ink); color: white;
}
.skip-link:focus { transform: translateY(0); }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid rgba(220, 229, 235, 0.85);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}
.header-inner { min-height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 19px; font-weight: 850; letter-spacing: -0.04em; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 12px; color: white; background: var(--navy);
  box-shadow: inset 0 -7px 12px rgba(0, 0, 0, .13);
}
.brand-mark svg { width: 23px; height: 23px; }
.brand em { color: #54811a; font-style: normal; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.nav a { padding: 9px 12px; border-radius: 10px; color: #435264; text-decoration: none; font-weight: 700; font-size: 14px; }
.nav a:hover, .nav a:focus-visible { background: var(--wash); color: var(--navy); }
.header-cta { background: var(--navy) !important; color: white !important; }

.hero { position: relative; overflow: hidden; padding: 68px 0 58px; background: linear-gradient(135deg, #f8fbff 0%, #edf6ff 48%, #fff 100%); }
.hero::before { content: ""; position: absolute; width: 560px; height: 560px; border-radius: 50%; background: rgba(185, 239, 84, .19); filter: blur(2px); left: -390px; top: -320px; }
.hero-grid { position: relative; min-height: 500px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 34px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--navy-2); font-size: 13px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 20px; background: var(--lime-strong); }
.hero h1 { max-width: 690px; margin: 15px 0 18px; font-size: clamp(39px, 5vw, 66px); line-height: 1.08; letter-spacing: -0.065em; }
.hero h1 span { position: relative; color: var(--navy-2); white-space: nowrap; }
.hero h1 span::after { content: ""; position: absolute; height: .2em; left: -.03em; right: -.03em; bottom: .06em; z-index: -1; border-radius: 20px; background: var(--lime); }
.hero-copy { max-width: 630px; margin: 0 0 26px; color: var(--muted); font-size: 18px; }
.hero-art { position: relative; align-self: stretch; min-height: 450px; }
.hero-art img { position: absolute; width: 880px; max-width: none; height: 100%; right: -190px; top: 0; object-fit: cover; object-position: 68% center; mix-blend-mode: multiply; }
.trust-row { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 22px; color: #536170; font-size: 13px; font-weight: 700; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime-strong); box-shadow: 0 0 0 4px rgba(139, 214, 41, .16); }

.search-shell { position: relative; max-width: 720px; }
.search-box { display: flex; align-items: center; gap: 10px; padding: 8px 8px 8px 18px; border: 1px solid #cddbe6; border-radius: 18px; background: white; box-shadow: var(--shadow); }
.search-box svg { width: 22px; color: #6a7c8e; flex: 0 0 auto; }
.search-box input { width: 100%; min-width: 0; padding: 11px 0; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 17px; }
.search-box button { border: 0; border-radius: 13px; padding: 12px 18px; background: var(--lime); color: #1b3106; font-weight: 850; cursor: pointer; white-space: nowrap; }
.search-box button:hover { background: #a9e53c; }
.search-results { position: absolute; left: 0; right: 0; top: calc(100% + 10px); z-index: 30; display: none; max-height: 380px; overflow: auto; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: var(--shadow); }
.search-results.is-open { display: block; }
.search-result { display: block; padding: 13px 16px; border-bottom: 1px solid #edf1f4; text-decoration: none; }
.search-result:last-child { border-bottom: 0; }
.search-result:hover, .search-result:focus { background: #f5f9fc; }
.search-result strong { display: block; line-height: 1.4; }
.search-result span { color: var(--muted); font-size: 12px; }
.search-empty { padding: 18px; color: var(--muted); }

.section { padding: 84px 0; }
.section.tint { background: var(--wash); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
.section-head h2 { margin: 6px 0 0; font-size: clamp(29px, 3vw, 43px); line-height: 1.16; letter-spacing: -0.055em; }
.section-head p { max-width: 560px; margin: 0; color: var(--muted); }
.text-link { color: var(--navy-2); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 4px; white-space: nowrap; }

.brand-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.brand-card { position: relative; min-height: 148px; padding: 22px; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: white; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.brand-card:hover { transform: translateY(-4px); border-color: #b8cad6; box-shadow: 0 18px 32px rgba(27, 58, 83, .09); }
.brand-card::after { content: attr(data-letter); position: absolute; right: -2px; bottom: -26px; color: #eef3f6; font-weight: 900; font-size: 92px; line-height: 1; }
.brand-card strong, .brand-card span { position: relative; z-index: 1; display: block; }
.brand-card strong { font-size: 20px; letter-spacing: -.03em; }
.brand-card span { margin-top: 8px; color: var(--muted); font-size: 13px; }
.brand-card small { position: absolute; left: 22px; bottom: 19px; z-index: 1; color: #5b762b; font-weight: 800; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.driver-card { display: flex; flex-direction: column; min-height: 250px; padding: 24px; border: 1px solid var(--line); border-radius: 21px; background: white; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.driver-card:hover { transform: translateY(-4px); box-shadow: 0 18px 35px rgba(16, 32, 51, .09); }
.card-kicker { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: #66803a; font-size: 12px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.card-kicker b { padding: 4px 8px; border-radius: 999px; background: #effbd7; }
.driver-card h3 { margin: 20px 0 10px; font-size: 20px; line-height: 1.42; letter-spacing: -.035em; }
.driver-card p { margin: 0; color: var(--muted); font-size: 14px; }
.card-arrow { display: flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 22px; color: var(--navy-2); font-weight: 850; font-size: 14px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { counter-increment: step; position: relative; padding: 26px; border-radius: 22px; background: var(--navy); color: white; }
.step::before { content: "0" counter(step); display: block; margin-bottom: 42px; color: var(--lime); font-weight: 900; font-size: 13px; letter-spacing: .08em; }
.step h3 { margin: 0 0 8px; font-size: 21px; }
.step p { margin: 0; color: #cbd9e6; font-size: 14px; }

.page-hero { padding: 54px 0 42px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #f5faff, white); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 7px; color: var(--muted); font-size: 13px; }
.breadcrumbs a { color: inherit; }
.page-hero h1 { max-width: 920px; margin: 16px 0 14px; font-size: clamp(34px, 5vw, 56px); line-height: 1.18; letter-spacing: -0.055em; }
.page-meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 780px) 280px; justify-content: space-between; align-items: start; gap: 58px; padding: 54px 0 94px; }
.article { min-width: 0; }
.article > :first-child { margin-top: 0; }
.article h2 { margin: 50px 0 16px; font-size: 29px; line-height: 1.3; letter-spacing: -.045em; }
.article h3 { margin: 34px 0 12px; font-size: 22px; letter-spacing: -.035em; }
.article p, .article li { color: #344353; }
.article a { color: #0e5f9c; overflow-wrap: anywhere; }
.article table { width: 100%; margin: 24px 0; border-collapse: collapse; font-size: 14px; }
.article th, .article td { padding: 12px; border: 1px solid var(--line); text-align: left; }
.article th { background: var(--wash); }
.article blockquote { margin: 26px 0; padding: 17px 20px; border-left: 4px solid var(--lime-strong); border-radius: 0 14px 14px 0; background: #f6faef; color: #39501c; }
.article pre { overflow: auto; padding: 18px; border-radius: 14px; background: #102033; color: #e9f3f7; }
.article img { margin: 18px auto; border-radius: 16px; }
.article figure { margin: 28px 0; }
.article figcaption { color: var(--muted); font-size: 13px; text-align: center; }

.download-panel { position: relative; overflow: hidden; margin-bottom: 18px; padding: 30px; border: 1px solid #bfdbfe; border-radius: 26px; background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); color: var(--navy); box-shadow: 0 20px 42px rgba(37, 99, 235, .12); }
.download-panel::after { content: "↓"; position: absolute; right: 18px; top: -46px; color: rgba(37, 99, 235, .07); font-size: 190px; font-weight: 900; line-height: 1; }
.download-panel > * { position: relative; z-index: 1; }
.download-label { display: inline-flex; padding: 6px 10px; border-radius: 999px; background: #dbeafe; color: #1d4ed8; font-size: 12px; font-weight: 850; }
.download-panel h2 { margin: 15px 0 7px; color: #0b2c4f; font-size: 29px; }
.download-actions { width: 100%; margin-top: 22px; }
.download-button { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 16px; padding: 17px 19px; border-radius: 15px; background: linear-gradient(135deg, #2563eb, #1d4ed8); box-shadow: 0 10px 24px rgba(37, 99, 235, .22); color: white !important; text-decoration: none; font-weight: 900; }
.download-button:hover { background: linear-gradient(135deg, #1d4ed8, #1e40af); transform: translateY(-1px); }
.download-button-icon { width: 25px; height: 25px; flex: 0 0 auto; }

.ad-frame { position: relative; overflow: hidden; border: 1px dashed #cbd5e1; border-radius: 18px; background: #f8fafc; }
.ad-caption { position: absolute; z-index: 1; top: 8px; left: 10px; color: #94a3b8; font-size: 10px; letter-spacing: .08em; }
.ad-frame .adsbygoogle { width: 100%; height: 100%; min-height: inherit; }
.ad-frame-main { width: 100%; min-height: 220px; margin: 0 0 34px; }
.ad-frame-section { width: 100%; min-height: 220px; margin: 0 0 30px; }
.ad-frame-side { width: 100%; min-height: 600px; }

.fact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin: 28px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--line); }
.fact { padding: 18px; background: white; }
.fact span, .fact strong { display: block; }
.fact span { color: var(--muted); font-size: 12px; }
.fact strong { margin-top: 3px; font-size: 15px; }
.checklist { padding: 22px 24px; border: 1px solid #dbe9c0; border-radius: 18px; background: #f8fced; }
.checklist strong { display: block; margin-bottom: 10px; color: #39501c; font-size: 17px; }
.checklist ul { margin: 0; padding-left: 22px; }
.troubleshoot { display: grid; gap: 11px; }
.trouble { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; }
.trouble summary { cursor: pointer; font-weight: 850; }
.trouble p { margin: 12px 0 0; }
.legacy-note { margin-bottom: 28px; padding: 16px 18px; border-radius: 15px; background: #fff8e8; color: #70531b; font-size: 14px; }

.side { position: sticky; top: 96px; display: grid; gap: 15px; }
.side-card { padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.side-card h3 { margin: 0 0 10px; font-size: 16px; }
.side-card p { margin: 0; color: var(--muted); font-size: 13px; }
.side-card a { display: block; margin-top: 11px; color: var(--navy-2); font-weight: 800; font-size: 13px; }

.catalog-tools { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.catalog-tools input { width: min(100%, 520px); padding: 13px 15px; border: 1px solid #cbd8e1; border-radius: 13px; outline: none; }
.catalog-tools input:focus { border-color: var(--navy-2); box-shadow: 0 0 0 4px rgba(22,76,117,.1); }
.catalog-count { color: var(--muted); font-size: 13px; }
.catalog-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.catalog-item { padding: 18px; border: 1px solid var(--line); border-radius: 15px; background: white; text-decoration: none; }
.catalog-item:hover { border-color: #adc1ce; }
.catalog-item strong { display: block; line-height: 1.42; }
.catalog-item span { color: var(--muted); font-size: 12px; }
.catalog-item[hidden] { display: none; }

.callout { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 28px; padding: 34px; border-radius: 28px; background: var(--navy); color: white; }
.callout h2 { margin: 0 0 6px; font-size: 30px; }
.callout p { margin: 0; color: #c4d3df; }
.callout a { padding: 13px 17px; border-radius: 13px; background: var(--lime); color: #193108; text-decoration: none; font-weight: 900; }

.site-footer { padding: 54px 0 36px; background: #081e33; color: #d8e1ea; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 50px; }
.site-footer .brand { color: white; }
.footer-copy { max-width: 540px; color: #aebdca; font-size: 13px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links strong { margin-bottom: 4px; color: white; }
.footer-links a { color: #bdcbd7; text-decoration: none; font-size: 13px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #8fa2b2; font-size: 12px; }

.empty-state { padding: 80px 0 120px; text-align: center; }
.empty-state strong { display: block; color: var(--navy); font-size: 90px; line-height: 1; }
.empty-state h1 { font-size: 38px; letter-spacing: -.05em; }
.empty-state p { color: var(--muted); }
.empty-state a { display: inline-block; margin-top: 14px; padding: 12px 18px; border-radius: 13px; background: var(--navy); color: white; text-decoration: none; font-weight: 850; }

@media (max-width: 960px) {
  .nav a:not(.header-cta) { display: none; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; }
  .hero-art { position: absolute; inset: 0; opacity: .18; min-height: 0; pointer-events: none; }
  .hero-art img { width: 100%; max-width: 100%; right: 0; object-position: 70% center; }
  .hero-content { position: relative; z-index: 2; padding: 30px 0; }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .side { position: static; grid-template-columns: repeat(2, 1fr); }
  .ad-frame-side { display: none; }
}

@media (max-width: 640px) {
  .wrap { width: min(calc(100% - 26px), var(--max)); }
  .site-header .brand span:last-child { display: none; }
  .header-inner { min-height: 62px; }
  .nav { margin-left: auto; }
  .nav .header-cta { padding: 8px 10px; }
  .hero { padding: 28px 0 34px; }
  .hero-grid { min-height: 520px; }
  .hero h1 { font-size: 39px; }
  .hero-copy { font-size: 16px; }
  .search-box { padding-left: 13px; }
  .search-box button { padding-inline: 12px; }
  .section { padding: 58px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .brand-grid, .card-grid, .steps, .catalog-list, .side, .footer-grid { grid-template-columns: 1fr; }
  .driver-card { min-height: 220px; }
  .step::before { margin-bottom: 26px; }
  .page-hero { padding: 38px 0 28px; }
  .page-hero h1 { font-size: 34px; }
  .article-layout { padding-top: 32px; }
  .download-panel { padding: 23px; }
  .download-panel h2 { font-size: 25px; }
  .download-button { padding: 16px; }
  .ad-frame-main, .ad-frame-section { min-height: 280px; aspect-ratio: 1 / 1; }
  .fact-grid { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media print {
  .site-header, .site-footer, .side, .search-shell, .download-actions { display: none !important; }
  .page-hero { background: none; }
  .article-layout { display: block; padding: 20px 0; }
  .download-panel { border: 1px solid #aaa; background: white; color: black; box-shadow: none; }
  .ad-frame { display: none !important; }
}