:root {
  --pf-blue: #2f68b7;
  --pf-blue-deep: #223f89;
  --pf-blue-dark: #20377a;
  --cyan: #55c9ef;
  --green: #63d95b;
  --white: #ffffff;
  --text-dark: #21408b;
  --footer: #2a458d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--pf-blue);
  color: var(--white);
}
img { display: block; max-width: 100%; }
a { color: inherit; }

.page-shell {
  min-height: 100vh;
  background: linear-gradient(135deg, #2f6cc0 0%, #2f66b5 55%, #2c62ad 100%);
}

.site-header {
  max-width: 1440px;
  margin: 0 auto;
  min-height: 118px;
  padding: 22px 58px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.24);
}

.pf-logo--header { width: 250px; height: auto; }
.lung-life-lockup { text-align: right; line-height: 1.2; }
.lung-life-lockup strong { display: block; font-size: 18px; letter-spacing: .04em; }
.lung-life-lockup span { display: block; margin-top: 5px; color: var(--cyan); font-size: 12px; }

.main-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 40px 58px 42px;
  display: grid;
  grid-template-columns: minmax(0, 1.56fr) minmax(360px, .96fr);
  gap: 54px;
  align-items: start;
}

.hero-column { position: relative; padding-left: 24px; }
.hero-accent {
  position: absolute;
  left: 0;
  top: 58px;
  bottom: 24px;
  width: 8px;
  border-radius: 999px;
  background: var(--cyan);
}
.section-kicker {
  font-size: 17px;
  font-weight: 700;
  margin: 4px 0 24px;
}
.hero-visual {
  width: 100%;
  border-radius: 26px;
}
.hero-column h1 {
  margin: 24px 0 11px;
  font-size: clamp(28px, 2.45vw, 44px);
  line-height: 1.08;
  letter-spacing: -.025em;
}
.hero-subtitle {
  margin: 0;
  color: var(--cyan);
  font-size: clamp(13px, 1.15vw, 18px);
  font-weight: 700;
  letter-spacing: .01em;
}

.download-card {
  background: var(--white);
  color: var(--text-dark);
  border-radius: 28px;
  padding: 22px;
  box-shadow: 0 5px 0 rgba(16, 46, 113, .18);
}
.download-card__header {
  background: #2f4d99;
  border-radius: 20px;
  text-align: center;
  padding: 16px 18px 13px;
}
.download-card__header h2 { margin: 0; color: white; font-size: clamp(21px, 1.8vw, 30px); }
.download-card__header p { margin: 5px 0 0; color: var(--cyan); font-size: 13px; }
.lungs-visual {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  margin: 16px auto 8px;
}
.download-card__divider { height: 1px; background: #d7dce7; }
.download-card h3 {
  margin: 18px 0 22px;
  text-align: center;
  font-size: clamp(22px, 2vw, 32px);
}
.download-button {
  min-height: 82px;
  display: grid;
  grid-template-columns: 54px 1fr 54px;
  align-items: center;
  padding: 12px 20px;
  border-radius: 20px;
  text-decoration: none;
  background: var(--green);
  box-shadow: 0 7px 0 rgba(74, 153, 64, .28);
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
}
.download-button:hover { transform: translateY(-1px); filter: brightness(1.03); }
.download-button:focus-visible { outline: 4px solid #fff; outline-offset: 4px; }
.download-icon { font-size: 38px; font-weight: 700; line-height: 1; }
.download-button__copy { grid-column: 2; text-align: center; }
.download-button__copy strong { display: block; font-size: clamp(18px, 1.65vw, 26px); }
.download-button__copy span { display: block; margin-top: 2px; font-size: 14px; font-weight: 700; }

.site-footer {
  background: var(--footer);
  padding: 25px max(34px, calc((100vw - 1440px)/2 + 58px));
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 330px;
  align-items: center;
  gap: 28px;
}
.footer-logo-wrap,
.footer-disclaimer,
.footer-contact { min-width: 0; }
.footer-logo-wrap { padding-right: 28px; border-right: 1px solid rgba(255,255,255,.45); }
.pf-logo--footer { width: 240px; }
.footer-disclaimer { padding: 0 12px; font-size: 13px; line-height: 1.45; }
.footer-disclaimer p { margin: 0; }
.reference-code { margin-top: 4px !important; }
.footer-contact { padding-left: 28px; border-left: 1px solid rgba(255,255,255,.45); display: flex; flex-direction: column; gap: 5px; font-size: 13px; }
.footer-contact strong { color: var(--cyan); font-size: 17px; }
.footer-contact a { text-decoration: none; overflow-wrap: anywhere; }
.footer-contact a:hover { text-decoration: underline; }

@media (max-width: 1050px) {
  .site-header { padding-inline: 32px; }
  .main-content { padding: 32px; grid-template-columns: 1fr; gap: 34px; }
  .hero-column { max-width: 900px; margin: 0 auto; width: 100%; }
  .download-card { max-width: 660px; margin: 0 auto; width: 100%; }
  .site-footer {
    padding: 26px 32px;
    grid-template-columns: 220px 1fr;
  }
  .footer-contact {
    grid-column: 1 / -1;
    border-left: 0;
    border-top: 1px solid rgba(255,255,255,.35);
    padding: 18px 0 0;
  }
}

@media (max-width: 700px) {
  .site-header {
    min-height: auto;
    padding: 18px 20px 16px;
  }
  .pf-logo--header { width: 190px; }
  .lung-life-lockup strong { font-size: 14px; }
  .lung-life-lockup span { font-size: 9px; }
  .main-content { padding: 26px 20px 30px; }
  .hero-column { padding-left: 16px; }
  .hero-accent { width: 6px; top: 48px; }
  .section-kicker { font-size: 14px; margin-bottom: 16px; }
  .hero-visual { border-radius: 18px; }
  .hero-column h1 { font-size: 30px; }
  .hero-subtitle { line-height: 1.4; }
  .download-card { border-radius: 24px; padding: 16px; }
  .download-card__header { border-radius: 16px; }
  .lungs-visual { margin-top: 10px; }
  .download-button { grid-template-columns: 38px 1fr 38px; min-height: 74px; padding: 10px 14px; border-radius: 16px; }
  .download-icon { font-size: 32px; }
  .site-footer { grid-template-columns: 1fr; gap: 20px; padding: 24px 20px; }
  .footer-logo-wrap { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.35); padding: 0 0 18px; }
  .pf-logo--footer { width: 220px; }
  .footer-disclaimer { padding: 0; font-size: 12px; }
  .footer-contact { grid-column: auto; padding-top: 18px; }
}

@media (max-width: 460px) {
  .site-header { align-items: flex-start; gap: 14px; }
  .pf-logo--header { width: 160px; }
  .lung-life-lockup { margin-top: 2px; }
  .lung-life-lockup span { display: none; }
  .main-content { padding-inline: 14px; }
  .hero-column h1 { font-size: 26px; }
  .download-card h3 { margin-bottom: 16px; }
  .download-button__copy strong { font-size: 17px; }
}


.footer-legal-links {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: nowrap;
  gap: 12px;
  width: 100%;
  text-align: center;
  font-size: 13px;
}

.footer-legal-links a {
  color: #fff;
  text-decoration: underline;
  white-space: nowrap;
}

.footer-legal-links a:hover {
  color: var(--cyan);
}

.footer-legal-links button {
  background: none;
  border: none;
  padding: 0;
  color: #fff;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
  white-space: nowrap;
}