:root {
  --navy: #173c52;
  --ink: #20323b;
  --muted: #6f7f82;
  --line: #dce7e3;
  --paper: #fbfaf5;
  --cream: #f4f0e6;
  --mint: #d9eee6;
  --sage: #8fb7a5;
  --yellow: #f3c964;
  --coral: #e47b62;
  --coral-soft: #f7e0d7;
  --blue-soft: #dcebf1;
  --shadow: 0 22px 55px rgba(23, 60, 82, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  letter-spacing: 0;
}
a { color: inherit; }
button, input { font: inherit; }
button { cursor: pointer; }
.skip-link { position: absolute; top: -50px; left: 16px; z-index: 20; padding: 8px 12px; background: var(--yellow); color: var(--navy); }
.skip-link:focus { top: 10px; }
.site-header { border-bottom: 1px solid rgba(220, 231, 227, .8); background: rgba(251, 250, 245, .96); }
.header-inner, .section-wrap, .footer-inner { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--navy); color: #fff; font-weight: 800; font-size: 19px; }
.brand-copy strong, .brand-copy small { display: block; line-height: 1.1; }
.brand-copy strong { font-size: 15px; color: var(--navy); }
.brand-copy small { margin-top: 5px; color: var(--muted); font-size: 11px; }
.header-nav { display: flex; align-items: center; gap: 25px; color: var(--muted); font-size: 13px; }
.header-nav a { text-decoration: none; }
.header-nav a:hover, .header-nav a:focus-visible { color: var(--navy); }
.header-nav .nav-emergency { color: var(--coral); }
.hero { display: grid; grid-template-columns: minmax(0, .98fr) minmax(360px, .92fr); align-items: center; gap: 76px; min-height: 590px; padding-top: 68px; padding-bottom: 72px; }
.kicker, .section-label, .stage-overline { margin: 0; color: var(--coral); font-size: 11px; font-weight: 800; letter-spacing: 0; }
.kicker { display: flex; align-items: center; gap: 8px; }
.kicker-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--yellow); }
h1, h2, h3, h4, p { margin-top: 0; }
h1 { max-width: 650px; margin-bottom: 21px; color: var(--navy); font-size: 64px; font-weight: 750; letter-spacing: 0; line-height: 1.12; }
h1 em { color: var(--coral); font-style: normal; }
.hero-lede { max-width: 470px; margin-bottom: 30px; color: var(--muted); font-size: 16px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; }
.button { display: inline-flex; align-items: center; gap: 13px; min-height: 46px; padding: 0 20px; text-decoration: none; font-size: 13px; font-weight: 700; }
.button-primary { background: var(--navy); color: #fff; box-shadow: 0 12px 25px rgba(23, 60, 82, .16); }
.button-primary:hover, .button-primary:focus-visible { background: #245870; }
.text-link { color: var(--navy); font-size: 13px; font-weight: 700; text-decoration: none; }
.text-link span { display: inline-block; margin-left: 6px; color: var(--coral); transition: transform .2s ease; }
.text-link:hover span, .text-link:focus-visible span { transform: translateX(4px); }
.hero-note { display: flex; align-items: center; gap: 8px; max-width: 420px; margin-top: 42px; color: #8b9895; font-size: 11px; }
.note-icon { display: grid; place-items: center; width: 17px; height: 17px; border: 1px solid #9eb6ad; border-radius: 50%; color: #66897d; font-size: 11px; font-weight: 800; }
.hero-visual { position: relative; min-height: 450px; }
.hero-photo { position: absolute; inset: 14px 16px 0 0; z-index: 1; margin: 0; overflow: hidden; background: var(--blue-soft); box-shadow: var(--shadow); }
.hero-photo::after { content: ""; position: absolute; inset: 0; background: rgba(23, 60, 82, .06); pointer-events: none; }
.hero-photo img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-photo figcaption { position: absolute; right: 0; bottom: 0; left: 0; padding: 12px 18px; background: rgba(23, 60, 82, .8); color: #fff; font-size: 12px; }
.hero-stamp { position: absolute; right: -18px; bottom: 33px; z-index: 2; display: flex; align-items: center; justify-content: center; gap: 4px; width: 116px; height: 116px; border-radius: 50%; background: var(--yellow); color: var(--navy); transform: rotate(8deg); box-shadow: 0 14px 30px rgba(23, 60, 82, .12); }
.hero-stamp span { font-size: 43px; font-weight: 800; line-height: 1; }
.hero-stamp small { font-size: 11px; font-weight: 750; line-height: 1.25; }
.hero-tape { position: absolute; top: -2px; right: 55px; z-index: 2; width: 92px; height: 24px; background: rgba(243, 201, 100, .72); transform: rotate(4deg); }
.section-wrap { padding-top: 82px; padding-bottom: 82px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; margin-bottom: 28px; }
.section-heading h2, .checklist-intro h2, .emergency-section h2, .sources-section h2 { margin: 8px 0 0; color: var(--navy); font-size: 38px; line-height: 1.2; letter-spacing: 0; }
.section-intro { max-width: 340px; margin-bottom: 3px; color: var(--muted); font-size: 13px; }
.stage-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stage-tab { display: grid; grid-template-columns: 30px 1fr; grid-template-rows: auto auto; column-gap: 10px; min-height: 93px; padding: 19px 17px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); text-align: left; }
.stage-tab:first-child { border-left: 1px solid var(--line); }
.stage-tab span { grid-row: 1 / span 2; color: #a8b6b1; font-size: 12px; font-weight: 800; }
.stage-tab strong { color: var(--ink); font-size: 14px; line-height: 1.3; }
.stage-tab small { margin-top: 3px; font-size: 11px; }
.stage-tab:hover, .stage-tab:focus-visible { background: #f3f7f3; }
.stage-tab.active { background: var(--navy); }
.stage-tab.active span, .stage-tab.active strong, .stage-tab.active small { color: #fff; }
.stage-panel { display: grid; grid-template-columns: minmax(235px, .78fr) minmax(0, 1.22fr); gap: 66px; padding: 48px 40px 50px; background: var(--mint); }
.stage-panel[hidden] { display: none; }
.stage-summary h3 { max-width: 350px; margin: 10px 0 15px; color: var(--navy); font-size: 30px; line-height: 1.25; }
.stage-summary > p:last-child { max-width: 380px; margin-bottom: 0; color: #57726f; font-size: 13px; }
.stage-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.stage-facts article { padding-top: 9px; border-top: 1px solid rgba(23, 60, 82, .22); }
.fact-number, .care-index { color: var(--coral); font-size: 11px; font-weight: 800; }
.stage-facts h4 { margin: 11px 0 8px; color: var(--navy); font-size: 15px; }
.stage-facts p { margin: 0; color: #57726f; font-size: 12px; line-height: 1.75; }
.care-section { padding-top: 75px; }
.compact-heading { margin-bottom: 30px; }
.care-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.care-card { min-height: 280px; padding: 24px 21px 20px; border-top: 3px solid transparent; }
.care-feed { background: var(--coral-soft); border-color: var(--coral); }
.care-sleep { background: var(--blue-soft); border-color: #6c9eb2; }
.care-play { background: #f3edc9; border-color: var(--yellow); }
.care-safe { background: var(--mint); border-color: var(--sage); }
.care-icon { display: grid; place-items: center; width: 37px; height: 37px; margin: 23px 0 14px; border: 1px solid currentColor; border-radius: 50%; color: var(--navy); font-size: 11px; font-weight: 800; }
.care-card h3 { margin-bottom: 8px; color: var(--navy); font-size: 21px; }
.care-card p { min-height: 66px; margin-bottom: 18px; color: #5d6d6c; font-size: 12px; line-height: 1.7; }
.care-card a { color: var(--navy); font-size: 11px; font-weight: 800; text-decoration: none; }
.care-card a span { margin-left: 4px; color: var(--coral); }
.checklist-section { display: grid; grid-template-columns: .82fr 1.18fr; gap: 76px; align-items: center; padding-top: 70px; padding-bottom: 90px; }
.checklist-intro > p:not(.section-label) { max-width: 360px; margin: 20px 0 23px; color: var(--muted); font-size: 13px; }
.reset-button { padding: 0; border: 0; border-bottom: 1px solid #b4c3be; background: transparent; color: var(--navy); font-size: 11px; }
.reset-button:hover, .reset-button:focus-visible { border-color: var(--coral); color: var(--coral); }
.checklist { border-top: 1px solid var(--line); }
.check-item { display: grid; grid-template-columns: 24px 1fr; gap: 13px; align-items: center; min-height: 78px; padding: 12px 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.check-item input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.custom-check { position: relative; display: block; width: 22px; height: 22px; border: 1px solid #a7bbb4; background: #fff; }
.custom-check::after { content: ""; position: absolute; top: 3px; left: 7px; width: 6px; height: 11px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg) scale(0); transition: transform .15s ease; }
.check-item input:checked + .custom-check { border-color: var(--navy); background: var(--navy); }
.check-item input:checked + .custom-check::after { transform: rotate(45deg) scale(1); }
.check-item input:focus-visible + .custom-check { outline: 2px solid var(--coral); outline-offset: 3px; }
.check-item strong, .check-item small { display: block; }
.check-item strong { color: var(--navy); font-size: 14px; }
.check-item small { margin-top: 2px; color: var(--muted); font-size: 11px; }
.check-item input:checked ~ span:last-child strong { color: #8ca19b; text-decoration: line-through; }
.emergency-section { display: grid; grid-template-columns: 70px 1fr; gap: 25px; align-items: start; max-width: 1160px; padding-top: 48px; padding-bottom: 48px; background: var(--navy); color: #fff; }
.emergency-mark { display: grid; place-items: center; width: 54px; height: 54px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; color: var(--yellow); font-size: 27px; font-weight: 800; }
.emergency-section h2 { color: #fff; }
.emergency-lede { max-width: 790px; margin: 18px 0 12px; color: #d2e1df; font-size: 14px; }
.emergency-note { margin: 0; color: #9ebcb9; font-size: 11px; }
.sources-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 72px; padding-top: 94px; padding-bottom: 94px; }
.source-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.source-list p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.75; }
.source-list strong { color: var(--navy); font-size: 13px; }
.source-attribution { grid-column: 1 / -1; margin: 18px 0 0; padding-top: 15px; border-top: 1px solid var(--line); color: #8a9894; font-size: 10px; }
.source-attribution a { color: var(--navy); }
.site-footer { border-top: 1px solid var(--line); background: #f2f1e9; }
.footer-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 25px; min-height: 88px; }
.footer-inner strong, .footer-inner span { display: block; }
.footer-inner strong { color: var(--navy); font-size: 13px; }
.footer-inner span, .footer-inner p { color: var(--muted); font-size: 10px; }
.footer-inner p { margin: 0; }
.footer-records { position: absolute; left: 50%; transform: translateX(-50%); text-align: center; }
.footer-records a { color: var(--navy); font-size: 11px; text-decoration: none; }
.footer-records a:hover, .footer-records a:focus-visible { color: var(--coral); text-decoration: underline; }
@media (max-width: 880px) {
  .header-nav { gap: 14px; }
  .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 48px; }
  .hero-visual { width: min(100%, 560px); min-height: 370px; }
  .stage-panel { gap: 35px; padding-right: 28px; padding-left: 28px; }
  .care-grid { grid-template-columns: repeat(2, 1fr); }
  .checklist-section, .sources-section { gap: 40px; }
}
@media (max-width: 620px) {
  .header-inner, .section-wrap, .footer-inner { width: min(100% - 32px, 540px); }
  .header-inner { min-height: 67px; }
  .header-nav { display: none; }
  .hero { min-height: auto; padding-top: 43px; padding-bottom: 55px; }
  h1 { font-size: 40px; }
  .section-heading h2, .checklist-intro h2, .emergency-section h2, .sources-section h2 { font-size: 29px; }
  .stage-summary h3 { font-size: 25px; }
  .hero-lede { font-size: 14px; }
  .hero-note { margin-top: 28px; }
  .hero-visual { min-height: 300px; }
  .hero-photo { inset: 10px 12px 0 0; }
  .hero-stamp { right: -4px; bottom: 22px; width: 93px; height: 93px; }
  .hero-stamp span { font-size: 33px; }
  .hero-stamp small { font-size: 9px; }
  .section-wrap { padding-top: 60px; padding-bottom: 60px; }
  .section-heading, .checklist-section, .sources-section { display: block; }
  .section-intro { margin-top: 16px; }
  .stage-tabs { grid-template-columns: repeat(2, 1fr); }
  .stage-tab:nth-child(2) { border-right: 0; }
  .stage-tab:nth-child(3), .stage-tab:nth-child(4) { border-top: 1px solid var(--line); }
  .stage-panel { display: block; padding: 32px 22px 35px; }
  .stage-summary > p:last-child { margin-bottom: 30px; }
  .stage-facts { grid-template-columns: 1fr; gap: 20px; }
  .stage-facts article { display: grid; grid-template-columns: 28px 1fr; column-gap: 12px; }
  .stage-facts h4 { margin: 0 0 4px; }
  .stage-facts p { grid-column: 2; }
  .care-grid { grid-template-columns: 1fr; }
  .care-card { min-height: 0; }
  .care-card p { min-height: 0; }
  .checklist-section { padding-top: 59px; padding-bottom: 66px; }
  .checklist { margin-top: 36px; }
  .emergency-section { grid-template-columns: 1fr; gap: 18px; width: 100%; padding-right: 22px; padding-left: 22px; }
  .sources-section { padding-top: 70px; padding-bottom: 70px; }
  .source-list { grid-template-columns: 1fr; gap: 18px; margin-top: 30px; }
  .footer-inner { display: block; padding-top: 20px; padding-bottom: 20px; }
  .footer-inner p { margin-top: 12px; }
  .footer-records { position: static; margin-top: 12px; transform: none; text-align: left; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; } }