:root {
  --paper: #f6f7f4;
  --surface: #ffffff;
  --ink: #15191f;
  --muted: #58616d;
  --line: #d9dde2;
  --soft: #edf0f2;
  --accent: #215cc7;
  --accent-rgb: 33, 92, 199;
  --accent-ink: #153a7e;
  --radius: 18px;
  --shadow: 0 24px 70px rgba(28, 35, 43, .10);
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.72;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(var(--accent-rgb), .38);
  outline-offset: 3px;
}
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; }
.container { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 999; padding: 10px 14px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  border-bottom: 1px solid rgba(21, 25, 31, .10);
  background: rgba(246, 247, 244, .94);
  backdrop-filter: blur(16px);
}
.nav-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: max-content; text-decoration: none; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { width: 28px; height: 28px; border-radius: 9px; background: var(--accent); box-shadow: inset 0 0 0 1px rgba(255,255,255,.2); }
.nav-links { display: flex; align-items: center; gap: 20px; margin-left: auto; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 700; }
.nav-links a[aria-current="true"] { color: var(--accent-ink); }
.nav-action { border: 1px solid var(--ink); background: var(--ink); color: #fff; border-radius: 999px; padding: 9px 14px; cursor: pointer; min-width: max-content; transition: transform .18s ease, background .18s ease; }
.nav-action:hover { background: var(--accent-ink); }
.nav-action:active { transform: scale(.98); }
.hero { min-height: calc(100dvh - 72px); display: grid; align-items: center; padding: 48px 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, .88fr) minmax(460px, 1.12fr); gap: clamp(36px, 6vw, 80px); align-items: center; }
.hero-copy { max-width: 640px; }
.kicker { display: inline-flex; align-items: center; min-height: 32px; padding: 5px 11px; border-radius: 999px; color: var(--accent-ink); background: rgba(var(--accent-rgb), .10); font-size: 13px; font-weight: 800; letter-spacing: .02em; }
.hero h1 { max-width: 11ch; margin: 22px 0 20px; font-size: clamp(46px, 6.2vw, 78px); line-height: .98; letter-spacing: -.065em; }
.hero-lead { max-width: 580px; margin: 0 0 28px; color: #3e4752; font-size: clamp(18px, 2vw, 22px); line-height: 1.62; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 18px; border: 1px solid var(--ink); border-radius: 999px; text-decoration: none; font-weight: 800; transition: transform .18s ease, background .18s ease, color .18s ease; }
.button.primary { background: var(--ink); color: #fff; }
.button.secondary { background: transparent; color: var(--ink); }
.button:hover { transform: translateY(-1px); }
.button:active { transform: scale(.98); }
.hero-media { position: relative; }
.hero-media img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-media::before { content: ""; position: absolute; inset: -18px 22px 18px -22px; z-index: -1; border-radius: calc(var(--radius) + 8px); background: rgba(var(--accent-rgb), .12); }
.fact-strip { border-block: 1px solid var(--line); background: var(--surface); }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); }
.fact { min-height: 126px; padding: 24px; border-right: 1px solid var(--line); }
.fact:first-child { border-left: 1px solid var(--line); }
.fact strong { display: block; color: var(--accent-ink); font-size: clamp(25px, 3vw, 36px); line-height: 1.1; letter-spacing: -.04em; }
.fact span { display: block; margin-top: 9px; color: var(--muted); font-size: 14px; }
section.content { padding: 108px 0; }
section.content.compact { padding: 80px 0; }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head h2 { margin: 0 0 16px; font-size: clamp(34px, 4.5vw, 56px); line-height: 1.06; letter-spacing: -.055em; }
.section-head p { margin: 0; color: var(--muted); font-size: 18px; }
.intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 42px; }
.statement { margin: 0; font-size: clamp(28px, 3.7vw, 46px); line-height: 1.22; letter-spacing: -.045em; }
.statement em { color: var(--accent-ink); font-style: normal; }
.fit-list { display: grid; gap: 12px; }
.fit-item { padding: 18px 0; border-bottom: 1px solid var(--line); }
.fit-item strong { display: block; margin-bottom: 4px; font-size: 18px; }
.fit-item span { color: var(--muted); }
.outcome-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; }
.outcome-main { padding: clamp(28px, 4vw, 48px); border-radius: var(--radius); background: var(--accent); color: white; }
.outcome-main h3 { margin: 0 0 18px; font-size: clamp(30px, 4vw, 48px); line-height: 1.1; letter-spacing: -.04em; }
.outcome-main p { max-width: 600px; margin: 0; color: rgba(255,255,255,.84); font-size: 18px; }
.outcome-side { display: grid; gap: 16px; }
.outcome-card { min-height: 140px; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.outcome-card strong { display: block; margin-bottom: 8px; font-size: 20px; }
.outcome-card span { color: var(--muted); }
.week-stack { display: grid; gap: 26px; }
.week { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 38px; padding: 34px 0; border-top: 1px solid var(--line); }
.week:last-child { border-bottom: 1px solid var(--line); }
.week-label { align-self: start; position: sticky; top: 102px; }
.week-label span { display: block; color: var(--accent-ink); font-weight: 850; }
.week-label small { color: var(--muted); }
.week-body h3 { margin: 0 0 8px; font-size: clamp(25px, 3vw, 36px); line-height: 1.16; letter-spacing: -.035em; }
.week-body > p { max-width: 820px; margin: 0 0 24px; color: var(--muted); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.time-block { min-height: 120px; padding: 16px; border-radius: 13px; background: var(--surface); border: 1px solid var(--line); }
.time-block time { display: block; margin-bottom: 8px; color: var(--accent-ink); font-size: 12px; font-weight: 850; }
.time-block strong { display: block; line-height: 1.4; }
.artifact { margin-top: 16px; padding: 17px 18px; border-left: 4px solid var(--accent); background: rgba(var(--accent-rgb), .08); }
.artifact strong { color: var(--accent-ink); }
.ops-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 48px; align-items: start; }
.ops-diagram { display: grid; gap: 12px; padding: 28px; border-radius: var(--radius); background: #181d24; color: white; }
.ops-node { display: grid; grid-template-columns: 54px 1fr; gap: 15px; align-items: center; padding: 14px; border-radius: 13px; background: rgba(255,255,255,.08); }
.ops-node b { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; background: var(--accent); font-size: 18px; }
.ops-node span { color: rgba(255,255,255,.72); font-size: 14px; }
.ops-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.ops-item { padding: 0 0 18px; border-bottom: 1px solid var(--line); }
.ops-item strong { display: block; margin-bottom: 5px; }
.ops-item span { color: var(--muted); font-size: 15px; }
.loop { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; counter-reset: loop; }
.loop-step { counter-increment: loop; min-height: 190px; padding: 22px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.loop-step::before { content: counter(loop); display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 28px; border-radius: 50%; background: var(--accent); color: white; font-weight: 900; }
.loop-step strong { display: block; margin-bottom: 8px; font-size: 18px; }
.loop-step span { color: var(--muted); font-size: 14px; }
.measure-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.rubric, .metrics { padding: 30px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.rubric h3, .metrics h3 { margin: 0 0 20px; font-size: 26px; }
.metric { display: flex; gap: 18px; justify-content: space-between; align-items: baseline; padding: 15px 0; border-bottom: 1px solid var(--line); }
.metric:last-child { border-bottom: 0; }
.metric strong { color: var(--accent-ink); font-size: 24px; }
.metric span { color: var(--muted); text-align: right; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 31px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent-ink); font-weight: 900; }
.price-panel { display: grid; grid-template-columns: .9fr 1.1fr; overflow: hidden; border-radius: var(--radius); background: #181d24; color: white; }
.price-main { padding: clamp(30px, 5vw, 58px); background: var(--accent); }
.price-main span { display: block; color: rgba(255,255,255,.72); }
.price-main strong { display: block; margin: 8px 0 18px; font-size: clamp(46px, 6vw, 72px); line-height: 1; letter-spacing: -.06em; }
.price-main p { margin: 0; color: rgba(255,255,255,.86); }
.price-includes { padding: clamp(30px, 5vw, 58px); }
.price-includes h3 { margin-top: 0; font-size: 26px; }
.price-includes .check-list li::before { color: #fff; }
.price-includes .check-list li { color: rgba(255,255,255,.78); }
.notice { margin-top: 20px; padding: 18px 20px; border-radius: 13px; color: #3f4853; background: var(--soft); font-size: 14px; }
.risk-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.risk { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.risk strong { display: block; margin-bottom: 7px; font-size: 19px; }
.risk p { margin: 0; color: var(--muted); }
.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
summary { padding: 20px 52px 20px 22px; cursor: pointer; font-weight: 800; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 22px; top: 18px; color: var(--accent-ink); font-size: 24px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 22px 22px; color: var(--muted); }
.source-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.source-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.source-list a { font-weight: 800; }
.source-list span { display: block; color: var(--muted); font-size: 14px; }
.final-cta { padding: 80px 0; background: var(--ink); color: white; }
.final-cta .container { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.final-cta h2 { max-width: 760px; margin: 0; font-size: clamp(34px, 4.5vw, 56px); line-height: 1.08; letter-spacing: -.05em; }
.final-cta p { margin: 14px 0 0; color: rgba(255,255,255,.68); }
.final-cta .button { border-color: white; background: white; color: var(--ink); white-space: nowrap; }
.site-footer { padding: 36px 0; color: var(--muted); background: #11151a; }
.site-footer .container { display: flex; justify-content: space-between; gap: 20px; }
.site-footer a { color: #e8ebee; }
/* comparison hub */
.hub-hero { padding: 86px 0 66px; }
.hub-hero h1 { max-width: 900px; margin: 0 0 22px; font-size: clamp(46px, 7vw, 82px); line-height: .98; letter-spacing: -.065em; }
.hub-hero p { max-width: 760px; color: var(--muted); font-size: 20px; }
.assumption { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.assumption span { padding: 9px 13px; border-radius: 999px; color: var(--accent-ink); background: rgba(var(--accent-rgb), .10); font-weight: 800; font-size: 14px; }
.proposal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.proposal-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: transform .2s ease, box-shadow .2s ease; }
.proposal-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.proposal-card:first-child { grid-column: 1 / -1; display: grid; grid-template-columns: 1.1fr .9fr; }
.proposal-card img { width: 100%; height: 240px; object-fit: cover; }
.proposal-card:first-child img { height: 100%; min-height: 360px; }
.proposal-card-body { padding: 28px; }
.proposal-card small { color: var(--accent-ink); font-weight: 850; }
.proposal-card h2 { margin: 9px 0 12px; font-size: 30px; line-height: 1.1; letter-spacing: -.04em; }
.proposal-card p { margin: 0 0 20px; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 22px; }
.tags span { padding: 5px 9px; border-radius: 999px; background: var(--soft); color: #48515c; font-size: 12px; font-weight: 750; }
.compare-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 900px; }
.compare-table th, .compare-table td { padding: 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { background: var(--soft); font-size: 13px; }
.compare-table tbody th { width: 155px; background: transparent; color: var(--muted); }
.compare-table tr:last-child th, .compare-table tr:last-child td { border-bottom: 0; }
.recommendation { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
.recommend-main { padding: 38px; border-radius: var(--radius); color: white; background: var(--accent); }
.recommend-main h2 { margin: 0 0 12px; font-size: 38px; line-height: 1.1; }
.recommend-main p { margin: 0; color: rgba(255,255,255,.82); }
.recommend-side { display: grid; gap: 12px; }
.recommend-item { padding: 19px; border-radius: 14px; border: 1px solid var(--line); background: var(--surface); }
.recommend-item strong { display: block; margin-bottom: 4px; }
.recommend-item span { color: var(--muted); font-size: 14px; }
@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-grid, .intro-grid, .outcome-grid, .ops-layout, .price-panel, .recommendation { grid-template-columns: 1fr; }
  .hero-copy { max-width: 760px; }
  .hero h1 { max-width: 12ch; }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact:nth-child(odd) { border-left: 1px solid var(--line); }
  .timeline { grid-template-columns: 1fr 1fr; }
  .loop { grid-template-columns: repeat(3, 1fr); }
  .proposal-card:first-child { grid-template-columns: 1fr; }
  .proposal-card:first-child img { min-height: 280px; }
}
@media (max-width: 720px) {
  .container { width: min(100% - 30px, var(--max)); }
  .site-nav { height: 64px; }
  .nav-inner { gap: 12px; }
  .brand span:last-child { display: none; }
  .nav-links { gap: 12px; }
  .nav-links a { font-size: 13px; }
  .nav-links a:nth-child(n+4) { display: none; }
  .nav-action { padding-inline: 12px; font-size: 13px; }
  .hero { padding: 36px 0 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { max-width: none; font-size: clamp(42px, 13vw, 62px); }
  .hero-media::before { inset: -10px 10px 10px -10px; }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact { min-height: 110px; padding: 19px; }
  section.content, section.content.compact { padding: 72px 0; }
  .week { grid-template-columns: 1fr; gap: 15px; }
  .week-label { position: static; }
  .timeline, .ops-list, .measure-grid, .risk-grid, .proposal-grid { grid-template-columns: 1fr; }
  .loop { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; }
  .loop-step { min-width: 78vw; scroll-snap-align: start; }
  .final-cta .container { grid-template-columns: 1fr; }
  .site-footer .container { flex-direction: column; }
  .proposal-card:first-child { grid-column: auto; display: block; }
  .proposal-card:first-child img, .proposal-card img { height: 230px; min-height: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media print {
  @page { size: A4; margin: 14mm; }
  body { background: white; color: black; font-size: 10pt; }
  .site-nav, .hero-actions, .nav-action, .final-cta, .site-footer { display: none !important; }
  .container { width: 100%; }
  .hero { min-height: auto; padding: 0 0 10mm; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 10mm; }
  .hero h1 { font-size: 31pt; }
  .hero-lead { font-size: 12pt; }
  .hero-media img { box-shadow: none; }
  .hero-media::before { display: none; }
  section.content, section.content.compact { padding: 10mm 0; break-inside: avoid; }
  .section-head h2 { font-size: 24pt; }
  .week { grid-template-columns: 35mm 1fr; gap: 8mm; break-inside: avoid; }
  .week-label { position: static; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .time-block, .outcome-card, .risk, details, .rubric, .metrics { break-inside: avoid; }
  details p { display: block !important; }
  a { text-decoration: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; overflow-wrap: anywhere; }
}