:root {
  --ink: #151915;
  --ink-soft: #454d45;
  --paper: #f7f8f5;
  --white: #ffffff;
  --line: #dfe4dc;
  --green: #69c447;
  --green-deep: #367a25;
  --green-soft: #eaf7e5;
  --amber: #d39320;
  --amber-soft: #fff6df;
  --red: #b13a32;
  --red-soft: #fff0ee;
  --shadow: 0 18px 50px rgba(20, 30, 18, 0.08);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, a { font: inherit; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  z-index: 100;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: var(--white);
  padding: .7rem 1rem;
  border-radius: .6rem;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(17, 20, 17, .96);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  backdrop-filter: blur(18px);
}
.header-inner, .intro, .hub, .response-guide, .care-pairing, .evidence, .urgent, .footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand img { width: 300px; height: auto; }
.header-actions { display: flex; align-items: center; gap: 1.4rem; }
.quiet-link { color: #d8ded5; text-decoration: none; font-size: .92rem; }
.quiet-link:hover { color: var(--white); }
.book-button {
  display: inline-flex;
  gap: .5rem;
  align-items: center;
  background: var(--green);
  color: #0b1708;
  text-decoration: none;
  font-weight: 800;
  padding: .7rem 1rem;
  border-radius: 999px;
}
.book-button:hover { background: #7ed45e; transform: translateY(-1px); }

.intro { padding: 64px 0 34px; display: grid; grid-template-columns: 1.45fr .85fr; align-items: end; gap: 3.5rem; }
.eyebrow, .section-kicker {
  margin: 0 0 .45rem;
  color: var(--green-deep);
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .15em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: .65rem; max-width: 780px; font-size: clamp(2.35rem, 5vw, 4.8rem); line-height: .98; letter-spacing: -.055em; }
.intro-copy { margin-bottom: 0; max-width: 700px; color: var(--ink-soft); font-size: 1.08rem; }
.intro-note { display: flex; gap: .85rem; padding: 1.1rem; border: 1px solid var(--line); border-radius: 16px; background: rgba(255, 255, 255, .62); }
.intro-note p { margin: 0; font-size: .9rem; color: var(--ink-soft); }
.note-icon { flex: 0 0 24px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--green); font-weight: 900; }

.hub { display: grid; grid-template-columns: 310px minmax(0, 1fr); background: var(--white); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); overflow: hidden; }
.plan-nav { padding: 28px 20px; background: #111411; color: var(--white); }
.nav-heading { padding: 0 8px 15px; }
.nav-heading .section-kicker { color: #8dd96f; }
.nav-heading h2 { margin-bottom: 0; font-size: 1.2rem; letter-spacing: -.02em; }
.plan-list { display: grid; gap: 7px; }
.plan-button {
  width: 100%;
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: .8rem;
  padding: .78rem .8rem;
  border: 1px solid transparent;
  border-radius: 14px;
  color: #dce2da;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.plan-button:hover { background: #202620; color: var(--white); transform: translateX(2px); }
.plan-button[aria-pressed="true"] { background: var(--green); color: #0f160c; font-weight: 900; }
.plan-index { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 11px; background: rgba(255, 255, 255, .09); font-size: .76rem; font-weight: 900; }
.plan-button[aria-pressed="true"] .plan-index { background: rgba(13, 31, 8, .12); }
.plan-meta { display: block; font-size: .7rem; font-weight: 600; opacity: .66; margin-top: .1rem; }
.plan-arrow { opacity: .56; font-size: 1.1rem; }
.nav-help { margin: 22px 8px 0; padding-top: 18px; border-top: 1px solid #323832; display: flex; gap: .7rem; color: #aeb6ac; }
.nav-help > span { flex: 0 0 22px; width: 22px; height: 22px; border: 1px solid #596258; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .72rem; }
.nav-help p { margin: 0; font-size: .78rem; line-height: 1.45; }

.plan-panel { min-width: 0; padding: 36px; }
.plan-header { display: grid; grid-template-columns: 1fr auto; gap: 1.5rem; align-items: start; margin-bottom: 24px; }
.plan-label { margin-bottom: .45rem; color: var(--green-deep); font-weight: 900; font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; }
.plan-header h2 { margin-bottom: .55rem; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1; letter-spacing: -.045em; }
.plan-header p { margin: 0; color: var(--ink-soft); max-width: 680px; }
.plan-duration { min-width: 116px; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 14px; text-align: center; background: #fafbf9; }
.plan-duration span { display: block; color: #687068; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.plan-duration strong { display: block; margin-top: .1rem; font-size: 1.15rem; }
.plan-callout { display: flex; gap: .8rem; align-items: center; margin-bottom: 22px; padding: .85rem 1rem; border-radius: 14px; background: var(--green-soft); color: #244a1b; font-size: .9rem; }
.plan-callout span { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--green); font-weight: 900; }
.plan-callout p { margin: 0; }

.exercise-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.exercise-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fbfcfa; }
.exercise-image { aspect-ratio: 1 / 1; background-repeat: no-repeat; background-size: 300% 100%; border-bottom: 1px solid var(--line); background-color: #f7f6f2; }
.exercise-image[data-panel="1"] { background-position: left center; }
.exercise-image[data-panel="2"] { background-position: center center; }
.exercise-image[data-panel="3"] { background-position: right center; }
.exercise-body { padding: 1rem; }
.exercise-number { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; margin-bottom: .65rem; border-radius: 8px; background: var(--ink); color: var(--white); font-size: .72rem; font-weight: 900; }
.exercise-body h3 { margin-bottom: .45rem; font-size: 1.05rem; letter-spacing: -.02em; }
.exercise-body > p { color: var(--ink-soft); font-size: .86rem; line-height: 1.48; min-height: 5.2em; }
.dose { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: .8rem; }
.dose div { padding: .55rem .6rem; border-radius: 10px; background: var(--white); border: 1px solid var(--line); }
.dose span { display: block; color: #778077; font-size: .62rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.dose strong { display: block; margin-top: .1rem; font-size: .78rem; }
.key-cue { margin: .8rem 0 0; padding-top: .75rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .78rem; }
.key-cue strong { color: var(--green-deep); }

.plan-footer { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.advice-box, .flag-box { padding: 1.1rem; border-radius: 16px; }
.advice-box { background: #f1f3ef; }
.flag-box { background: var(--red-soft); border: 1px solid #f4d1cc; }
.box-title { display: flex; gap: .55rem; align-items: center; margin-bottom: .45rem; font-size: .9rem; }
.box-title span { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; font-size: .7rem; font-weight: 900; }
.advice-box .box-title span { background: var(--green); }
.flag-box .box-title span { background: var(--red); color: var(--white); }
.advice-box p, .flag-box p { margin: 0; color: var(--ink-soft); font-size: .82rem; }

.response-guide { padding: 72px 0; }
.response-heading { max-width: 670px; margin-bottom: 24px; }
.response-heading h2, .pairing-copy h2, .evidence-heading h2, .urgent h2 { margin-bottom: .65rem; font-size: clamp(1.7rem, 3.2vw, 2.7rem); line-height: 1.05; letter-spacing: -.04em; }
.response-heading > p:last-child, .evidence-heading > p:last-child { color: var(--ink-soft); }
.response-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.response-card { padding: 1.25rem; border: 1px solid var(--line); border-radius: 18px; background: var(--white); }
.status-mark { width: 34px; height: 7px; margin-bottom: 1.1rem; border-radius: 99px; }
.response-good .status-mark { background: var(--green); }
.response-adjust .status-mark { background: var(--amber); }
.response-stop .status-mark { background: var(--red); }
.response-card h3 { margin-bottom: .35rem; }
.response-card p { min-height: 3.2em; color: var(--ink-soft); font-size: .88rem; }
.response-card strong { display: block; font-size: .86rem; }

.care-pairing { padding-bottom: 72px; }
.pairing-card { position: relative; overflow: hidden; display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; padding: 46px; border-radius: 26px; background: var(--ink); color: var(--white); }
.pairing-card::after { content: ""; position: absolute; width: 360px; height: 360px; right: -180px; top: -190px; border: 72px solid rgba(105, 196, 71, .17); border-radius: 50%; }
.pairing-copy { position: relative; z-index: 1; }
.pairing-copy .section-kicker { color: #8bd96c; }
.pairing-copy p:last-child { margin: 0; color: #c1c8bf; }
.pairing-steps { position: relative; z-index: 1; list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.pairing-steps li { display: grid; grid-template-columns: 46px 1fr; gap: .8rem; padding: .9rem; border-radius: 14px; background: rgba(255,255,255,.07); }
.pairing-steps li > span { color: var(--green); font-size: .75rem; font-weight: 900; }
.pairing-steps strong { display: block; }
.pairing-steps p { margin: .08rem 0 0; color: #b9c0b6; font-size: .82rem; }

.evidence { padding-bottom: 72px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 54px; align-items: start; }
.evidence details { border-top: 1px solid #cfd5cc; border-bottom: 1px solid #cfd5cc; }
.evidence summary { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; cursor: pointer; font-weight: 900; }
.evidence summary::-webkit-details-marker { display: none; }
.evidence details[open] summary span { transform: rotate(45deg); }
.source-list { display: grid; padding-bottom: 1rem; }
.source-list a { display: grid; grid-template-columns: 1.15fr .85fr; gap: 1rem; padding: .9rem 0; border-top: 1px solid var(--line); text-decoration: none; }
.source-list a:hover strong { color: var(--green-deep); }
.source-list strong { font-size: .86rem; }
.source-list span { color: var(--ink-soft); font-size: .78rem; }

.urgent { margin-bottom: 72px; display: grid; grid-template-columns: 58px 1fr; gap: 1.2rem; padding: 1.5rem; border: 1px solid #f0c6c1; border-radius: 20px; background: var(--red-soft); }
.urgent-symbol { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; background: var(--red); color: var(--white); font-size: 1.5rem; font-weight: 900; }
.urgent h2 { margin-bottom: .4rem; font-size: 1.35rem; }
.urgent p { margin: 0; color: #63342f; }

footer { padding: 34px 0; background: #111411; color: #c7cec4; }
.footer-inner { display: grid; grid-template-columns: 245px 1fr auto; gap: 2rem; align-items: center; }
.footer-inner img { width: 230px; }
.footer-inner p { margin: 0; font-size: .78rem; }
.footer-inner a { color: var(--green); text-decoration: none; font-size: .82rem; font-weight: 800; }

button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--green); outline-offset: 3px; }

@media (max-width: 940px) {
  .intro { grid-template-columns: 1fr; gap: 1.5rem; }
  .hub { grid-template-columns: 1fr; }
  .plan-nav { padding: 22px; }
  .plan-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .plan-button { grid-template-columns: 34px 1fr; }
  .plan-index { width: 34px; height: 34px; }
  .plan-arrow { display: none; }
  .nav-help { display: none; }
  .pairing-card { grid-template-columns: 1fr; gap: 30px; }
  .evidence { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 720px) {
  .header-inner, .intro, .hub, .response-guide, .care-pairing, .evidence, .urgent, .footer-inner { width: min(100% - 24px, 1180px); }
  .header-inner { min-height: 68px; }
  .brand img { width: 205px; }
  .quiet-link { display: none; }
  .book-button { padding: .6rem .8rem; font-size: .8rem; }
  .intro { padding-top: 42px; }
  h1 { font-size: clamp(2.4rem, 13vw, 3.8rem); }
  .plan-list { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
  .plan-button { min-width: 178px; }
  .plan-panel { padding: 24px 16px; }
  .plan-header { grid-template-columns: 1fr; }
  .plan-duration { justify-self: start; min-width: 110px; }
  .exercise-grid, .response-grid, .plan-footer { grid-template-columns: 1fr; }
  .exercise-body > p { min-height: auto; }
  .exercise-image { aspect-ratio: 1 / 1; }
  .response-card p { min-height: auto; }
  .pairing-card { padding: 30px 22px; }
  .source-list a { grid-template-columns: 1fr; gap: .15rem; }
  .urgent { grid-template-columns: 42px 1fr; }
  .urgent-symbol { width: 38px; height: 38px; }
  .footer-inner { grid-template-columns: 1fr; gap: 1rem; }
  .footer-inner img { width: 240px; }
}

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