:root {
  --kr-ink: #101d31;
  --kr-muted: #60748a;
  --kr-red: #e13749;
  --kr-red-soft: #fff0f2;
  --kr-green: #2d7768;
  --kr-line: #d4dee8;
  --kr-paper: #fffdf9;
  --kr-cool: #f4f7f9;
}

.kr-main {
  background: #fff;
  color: var(--kr-ink);
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow: clip;
}

.kr-main *,
.kr-main *::before,
.kr-main *::after { box-sizing: border-box; }

.kr-shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.kr-kicker {
  margin: 0 0 18px;
  color: var(--kr-red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .13em;
  line-height: 1.35;
  text-transform: uppercase;
}

.kr-hero {
  min-height: 680px;
  padding: 118px 0 52px;
  background:
    radial-gradient(circle at 76% 33%, rgba(225,55,73,.065), transparent 31%),
    linear-gradient(180deg, #fff 0%, #fbfcfd 100%);
  border-bottom: 1px solid var(--kr-line);
}

.kr-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(560px, 1.12fr);
  align-items: center;
  gap: 48px;
}

.kr-hero-copy { min-width: 0; }

.kr-hero h1 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(48px, 4.75vw, 72px);
  font-weight: 800;
  letter-spacing: -.055em;
  line-height: .99;
}

.kr-accent { color: var(--kr-red); }

.kr-lead {
  max-width: 610px;
  margin: 24px 0 0;
  color: var(--kr-muted);
  font-size: 18px;
  line-height: 1.65;
}

.kr-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.kr-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 20px;
  border: 1px solid var(--kr-ink);
  border-radius: 12px;
  color: var(--kr-ink);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.kr-button--primary { background: var(--kr-ink); color: #fff; }
.kr-button:hover { border-color: var(--kr-red); color: var(--kr-red); }
.kr-button--primary:hover { background: var(--kr-red); color: #fff; }
.kr-button:focus-visible,
.kr-main a:focus-visible,
.kr-main summary:focus-visible {
  outline: 3px solid rgba(225,55,73,.34);
  outline-offset: 4px;
}

.kr-visual { min-width: 0; }
.kr-visual picture,
.kr-visual img { display: block; width: 100%; }
.kr-visual img { height: auto; }
.kr-visual figcaption {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 14px 2px 0;
  color: var(--kr-muted);
  font-size: 12px;
  line-height: 1.45;
}
.kr-visual figcaption strong { color: var(--kr-ink); }

.kr-source {
  padding: 70px 0;
  background: var(--kr-paper);
  border-bottom: 1px solid var(--kr-line);
}

.kr-source-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 72px;
  align-items: start;
}

.kr-section-title {
  max-width: 790px;
  margin: 0;
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 800;
  letter-spacing: -.05em;
  line-height: 1.04;
}

.kr-copy {
  margin: 20px 0 0;
  color: var(--kr-muted);
  font-size: 16px;
  line-height: 1.68;
}

.kr-source-note {
  padding: 28px;
  border: 1px solid var(--kr-line);
  border-left: 4px solid var(--kr-red);
  background: #fff;
}
.kr-source-note strong { display: block; margin-bottom: 10px; font-size: 15px; }
.kr-source-note p { margin: 0; color: var(--kr-muted); font-size: 14px; line-height: 1.62; }
.kr-source-note a { display: inline-flex; margin-top: 18px; color: var(--kr-red); font-size: 13px; font-weight: 800; }

.kr-decision { padding: 76px 0; scroll-margin-top: 104px; }
.kr-decision-head {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: end;
  gap: 72px;
  margin-bottom: 34px;
}
.kr-decision-head .kr-copy { margin: 0; }

.kr-ledger {
  border-block: 1px solid var(--kr-line);
}
.kr-row {
  display: grid;
  grid-template-columns: 74px minmax(180px,.65fr) minmax(0,1.35fr) minmax(190px,.55fr);
  align-items: center;
  gap: 22px;
  min-height: 108px;
  padding: 20px 0;
  border-bottom: 1px solid var(--kr-line);
}
.kr-row:last-child { border-bottom: 0; }
.kr-row-index {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--kr-red);
  border-radius: 50%;
  color: var(--kr-red);
  font-size: 13px;
  font-weight: 800;
}
.kr-row h3 { margin: 0; font-size: 19px; line-height: 1.3; }
.kr-row p { margin: 0; color: var(--kr-muted); font-size: 14px; line-height: 1.55; }
.kr-result {
  padding-left: 18px;
  border-left: 2px solid var(--kr-red);
  color: var(--kr-ink) !important;
  font-weight: 700;
}

.kr-tradeoff {
  padding: 70px 0;
  background: var(--kr-cool);
  border-block: 1px solid var(--kr-line);
}
.kr-tradeoff-grid {
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  gap: 76px;
  align-items: start;
}
.kr-compare { border-top: 1px solid var(--kr-line); }
.kr-compare-row {
  display: grid;
  grid-template-columns: 124px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--kr-line);
}
.kr-compare-row b { color: var(--kr-red); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.kr-compare-row span { color: var(--kr-muted); font-size: 14px; line-height: 1.55; }

.kr-mvp { padding: 76px 0; }
.kr-mvp-grid {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 72px;
  align-items: start;
}
.kr-mvp-list { border-top: 1px solid var(--kr-line); }
.kr-mvp-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--kr-line);
}
.kr-mvp-item b { color: var(--kr-red); font-size: 12px; }
.kr-mvp-item strong { display: block; font-size: 15px; }
.kr-mvp-item p { margin: 5px 0 0; color: var(--kr-muted); font-size: 13px; line-height: 1.5; }

.kr-faq { padding: 70px 0; background: var(--kr-paper); border-top: 1px solid var(--kr-line); }
.kr-faq-grid {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 72px;
}
.kr-faq-list { border-top: 1px solid var(--kr-line); }
.kr-faq details { border-bottom: 1px solid var(--kr-line); }
.kr-faq summary {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 750;
  list-style: none;
}
.kr-faq summary::-webkit-details-marker { display: none; }
.kr-faq summary::after { content: "+"; color: var(--kr-red); font-size: 24px; font-weight: 500; }
.kr-faq details[open] summary::after { content: "−"; }
.kr-faq details[open] summary { margin-bottom: 14px; }
.kr-faq details p { margin: -2px 0 20px; padding-right: 44px; color: var(--kr-muted); font-size: 14px; line-height: 1.65; }
.kr-faq details[open] p { margin-top: 0; }

.kr-footnote { padding: 34px 0 40px; background: #fff; border-top: 1px solid var(--kr-line); }
.kr-footnote-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 56px;
  align-items: end;
}
.kr-footnote p { margin: 0; color: var(--kr-muted); font-size: 13px; line-height: 1.65; }
.kr-related { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; }
.kr-related a { color: var(--kr-ink); font-size: 13px; font-weight: 750; text-decoration: none; }
.kr-related a:last-child { color: var(--kr-red); }

@media (max-width: 980px) {
  .kr-hero-grid { grid-template-columns: 1fr 1.05fr; gap: 28px; }
  .kr-hero h1 { font-size: clamp(44px, 6vw, 62px); }
  .kr-source-grid, .kr-decision-head, .kr-tradeoff-grid, .kr-mvp-grid, .kr-faq-grid { gap: 40px; }
  .kr-row { grid-template-columns: 58px minmax(150px,.65fr) minmax(0,1.35fr); }
  .kr-result { grid-column: 2 / -1; margin-top: -4px; }
}

@media (max-width: 700px) {
  .kr-shell { width: min(100% - 32px, 620px); }
  .kr-hero { min-height: 0; padding: 96px 0 34px; }
  .kr-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .kr-hero h1 { max-width: 520px; font-size: clamp(42px, 12.6vw, 58px); line-height: .98; }
  .kr-lead { margin-top: 20px; font-size: 16px; line-height: 1.58; }
  .kr-actions { margin-top: 24px; }
  .kr-button { flex: 1 1 180px; }
  .kr-visual figcaption { grid-template-columns: 1fr; gap: 4px; }
  .kr-source, .kr-decision, .kr-tradeoff, .kr-mvp, .kr-faq { padding: 54px 0; }
  .kr-source-grid, .kr-decision-head, .kr-tradeoff-grid, .kr-mvp-grid, .kr-faq-grid, .kr-footnote-grid { grid-template-columns: 1fr; gap: 30px; }
  .kr-section-title { font-size: clamp(33px, 10vw, 46px); }
  .kr-source-note { padding: 22px; }
  .kr-decision-head { margin-bottom: 24px; }
  .kr-row { grid-template-columns: 46px 1fr; gap: 14px; min-height: 0; padding: 20px 0; }
  .kr-row-index { width: 38px; height: 38px; }
  .kr-row > p:not(.kr-result), .kr-result { grid-column: 2; }
  .kr-result { margin: 0; padding-left: 14px; }
  .kr-compare-row { grid-template-columns: 94px 1fr; gap: 14px; }
  .kr-faq details p { padding-right: 16px; }
  .kr-footnote { padding: 30px 0 34px; }
  .kr-related { justify-content: flex-start; }
}

@media (max-width: 360px) {
  .kr-shell { width: min(100% - 24px, 620px); }
  .kr-hero h1 { font-size: 40px; }
  .kr-section-title { font-size: 32px; }
  .kr-source-note { padding: 18px; }
  .kr-compare-row { grid-template-columns: 1fr; gap: 6px; }
}

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