:root {
  color-scheme: light dark;
  --background: #f8fbfa;
  --surface: #fff;
  --foreground: #18342f;
  --muted: #526b65;
  --accent: #00776f;
  --accent-bright: #00a197;
  --mint: #e7f5f0;
  --rule: #dae7e1;
  --track: #e2eeea;
  --phone-border: #d9e5e0;
  --shadow: 0 24px 70px #18342f0d;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--background); color: var(--foreground); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; font-size: 1rem; line-height: 1.65; -webkit-font-smoothing: antialiased; }
::selection { background: var(--mint); color: var(--foreground); }
a { color: inherit; text-underline-offset: .22em; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: 3px; }
main:focus { outline: none; }
img { display: block; max-width: 100%; height: auto; }
svg { flex-shrink: 0; }
figure { margin: 0; }
figcaption { margin-top: 1.25rem; color: var(--muted); font-size: .75rem; text-align: center; }
h1, h2, h3, p { margin: 0; }
h1, h2 { font-weight: 600; letter-spacing: -.055em; line-height: 1.1; text-wrap: balance; }
h1 { font-size: clamp(2.8rem, 5.2vw, 4.7rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3.2rem); }
h3 { font-size: 1.22rem; letter-spacing: -.025em; font-weight: 600; line-height: 1.35; }
.shell { width: min(1120px, calc(100% - 4rem)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 5; top: .75rem; left: 1rem; padding: .75rem 1rem; background: var(--surface); transform: translateY(-200%); }
.skip-link:focus { transform: none; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; padding-block: 1.8rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 650; font-size: 1.65rem; letter-spacing: -.055em; line-height: 1; text-decoration: none; min-height: 44px; }
.brand img { width: 2rem; height: 2rem; }
nav { display: flex; flex-wrap: wrap; gap: .4rem 1.8rem; }
nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .88rem; text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); text-decoration: underline; }
.hero { display: grid; grid-template-columns: 1.35fr 1fr; align-items: center; gap: clamp(2rem, 5vw, 5rem); padding-block: 3.6rem 5rem; }
.eyebrow { display: flex; align-items: center; gap: .6rem; color: var(--accent); font-size: .75rem; font-weight: 600; letter-spacing: .075em; margin-bottom: 1.4rem; }
.status-dot { width: .5rem; height: .5rem; background: var(--accent-bright); border-radius: 50%; }
.hero h1 span { color: var(--accent); }
.lead { max-width: 39ch; font-size: 1.15rem; line-height: 1.75; color: var(--muted); margin-top: 1.65rem; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem 1.5rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .65rem; min-height: 52px; padding: .85rem 1.25rem; color: #fff; background: var(--accent); border: 1px solid transparent; border-radius: 999px; font-size: .9rem; font-weight: 600; text-align: center; text-decoration: none; line-height: 1.5; transition: background .18s; }
.button:hover { background: var(--foreground); color: var(--background); }
.text-link { display: inline-flex; align-items: center; gap: .65rem; min-height: 44px; font-size: .9rem; font-weight: 600; text-decoration-thickness: 1px; }
.small { font-size: .83rem; color: var(--muted); }
.hero-note { margin-top: 1rem; }
.hero-footnote { display: flex; align-items: center; gap: .6rem; margin-top: 2.8rem; color: var(--muted); font-size: .79rem; }
.app-figure { display: flex; flex-direction: column; align-items: center; }
.phone { width: min(100%, 310px); padding: 12px 9px 7px; border: 5px solid var(--phone-border); outline: 1px solid var(--surface); border-radius: 43px; background: var(--surface); box-shadow: var(--shadow); font-size: .8rem; line-height: 1.4; }
.phone-top { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding-inline: 16px; font-size: .68rem; font-weight: 650; }
.phone-island { width: 76px; height: 21px; background: var(--foreground); border-radius: 999px; }
.phone-content { padding: 16px 16px 9px; }
.phone-bird { margin-inline: auto; margin-bottom: 18px; }
.demo-date { display: flex; align-items: center; justify-content: space-between; padding-block: 8px; border-bottom: 1px solid var(--rule); font-weight: 550; }
.demo-pill { background: var(--mint); padding: 5px 10px; border-radius: 999px; color: var(--accent); font-size: .65rem; }
.demo-section-label { font-size: .7rem; font-weight: 650; color: var(--muted); margin: 17px 0 9px; }
.demo-metric { display: flex; align-items: center; justify-content: space-between; }
.score { display: grid; place-items: center; background: var(--accent); color: #fff; border-radius: 50%; width: 25px; height: 25px; font-size: .72rem; font-weight: 600; }
.slider-track { height: 5px; position: relative; background: var(--track); border-radius: 999px; margin: 12px 2px 20px; }
.slider-fill { position: absolute; height: 100%; background: var(--accent-bright); border-radius: inherit; }
.slider-fill.energy { width: 56%; }.slider-fill.mood { width: 78%; }
.slider-thumb { position: absolute; width: 15px; height: 15px; top: -5px; border-radius: 50%; background: var(--surface); border: 1px solid var(--rule); box-shadow: 0 1px 4px #0002; }
.slider-thumb.energy { left: 53%; }.slider-thumb.mood { left: 75%; }
.demo-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.demo-chips span { background: var(--track); border-radius: 999px; font-size: .65rem; padding: 6px 10px; }
.demo-chips .selected { color: #fff; background: var(--accent); }
.demo-note { color: var(--muted); font-size: .7rem; line-height: 1.6; }
.demo-save { display: grid; place-items: center; width: 36px; height: 36px; background: var(--accent); color: #fff; border-radius: 50%; margin: 12px 0 0 auto; font-size: 1.1rem; }
.phone-tabs { display: flex; justify-content: space-around; border-top: 1px solid var(--rule); padding: 9px 2px 5px; color: var(--muted); font-size: 1rem; text-align: center; }
.phone-tabs .current { color: var(--accent); }
.phone-tabs small { display: block; font-size: .5rem; margin-top: 2px; }
.phone-home { width: 90px; height: 4px; margin: 8px auto 0; border-radius: 99px; background: var(--foreground); }
.features { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(3rem, 8vw, 8rem); border-top: 1px solid var(--rule); padding-block: 5rem; scroll-margin-top: 2rem; }
.section-intro p:last-child { margin-top: 1.4rem; max-width: 33ch; color: var(--muted); }
.feature-list article { display: flex; align-items: start; gap: 1.5rem; padding-block: 1.7rem; border-top: 1px solid var(--rule); }
.feature-list article:first-child { padding-top: 0; border: 0; }
.feature-list article:last-child { padding-bottom: 0; }
.feature-number { color: var(--accent); font-size: .75rem; padding-top: .15rem; font-variant-numeric: tabular-nums; }
.feature-list p { color: var(--muted); font-size: .94rem; margin-top: .65rem; }
.patterns { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(3rem, 8vw, 8rem); padding-block: 4rem 6rem; }
.chart-card { background: var(--surface); border: 1px solid var(--rule); border-radius: 24px; padding: 1.8rem; box-shadow: var(--shadow); }
.chart-heading { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem; font-size: 1.05rem; font-weight: 600; }
.chart-period { color: var(--muted); font-size: .8rem; font-weight: 400; padding-top: .2rem; }
.chart-value { margin-block: 1.2rem; font-size: 2.7rem; font-weight: 600; letter-spacing: -.06em; line-height: 1; }.chart-value span { font-weight: 400; color: var(--muted); font-size: .9rem; letter-spacing: normal; }
.chart { width: 100%; height: auto; overflow: visible; margin-top: 1rem; }.chart-grid { stroke: var(--rule); }.chart-area { fill: var(--mint); }.chart-line { stroke: var(--accent); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }.chart-points { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.chart-days { display: flex; justify-content: space-between; font-size: .7rem; color: var(--muted); margin-top: .5rem; }.chart-caption { border-top: 1px solid var(--rule); margin-top: 1.5rem; padding-top: 1rem; font-size: .82rem; color: var(--muted); }
.patterns-copy > p:not(.eyebrow) { margin-top: 1.3rem; color: var(--muted); }
.privacy-section { padding-block: 1rem 5rem; }.privacy-panel { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 2.5rem; padding: clamp(2rem, 5vw, 4rem); background: var(--mint); border-radius: 28px; }.privacy-panel .eyebrow { margin-bottom: .8rem; }.privacy-panel p:not(.eyebrow) { max-width: 60ch; color: var(--muted); margin: 1.3rem 0 .7rem; }
.closing { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 2rem; padding-block: 1rem 5rem; }.closing h2 { font-size: clamp(2rem, 3.3vw, 2.8rem); }.closing p { margin-top: 1rem; color: var(--muted); }.closing .button { min-width: 150px; }
.site-footer { display: flex; justify-content: space-between; align-items: start; flex-wrap: wrap; gap: 2rem; border-top: 1px solid var(--rule); padding-block: 2rem 3rem; }.site-footer nav { gap: .2rem 1.3rem; }.site-footer p { color: var(--muted); font-size: .76rem; margin-top: .8rem; }.footer-brand { font-size: 1.3rem; min-height: auto; }.site-footer .medical-note { margin-top: .4rem; }
.document { max-width: 720px; padding-block: 3rem 6rem; }.document h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); }.document .document-intro { margin-block: 1.5rem; font-size: 1.1rem; color: var(--muted); }.document .updated { font-size: .8rem; color: var(--muted); margin-block: 1rem 2rem; }.document section { margin-top: 2.8rem; }.document h2 { font-size: 1.55rem; line-height: 1.25; letter-spacing: -.035em; margin-bottom: .9rem; }.document section p + p { margin-top: 1rem; }.document li { margin-block: .6rem; }.document ul { padding-left: 1.3rem; }.document a { overflow-wrap: anywhere; }.document .summary { padding: 1.5rem; border-radius: 20px; background: var(--mint); }.summary p + p { margin-top: .8rem; }.document .button { margin-block: .5rem; }.document nav { border-block: 1px solid var(--rule); padding-block: .6rem; margin-top: 1.5rem; }.document nav a { text-decoration: underline; }.document details { border-top: 1px solid var(--rule); padding-block: 1.2rem; }.document details:last-child { border-bottom: 1px solid var(--rule); }.document summary { cursor: pointer; font-size: 1.05rem; font-weight: 600; padding-block: .3rem; }.document details p { margin-top: 1rem; }.back-link { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: 1.2rem; font-size: .85rem; }
@media (prefers-color-scheme: dark) {
  :root { --background: #101b19; --surface: #172622; --foreground: #e2f3ec; --muted: #afc3bb; --accent: #8adecc; --accent-bright: #38c2b3; --mint: #1d3730; --rule: #30463e; --track: #2d453d; --phone-border: #354c43; --shadow: 0 24px 70px #0002; }
  .button, .score, .demo-chips .selected, .demo-save { color: #102c25; }
  .button:hover { color: var(--background); }
}
@media (max-width: 850px) {
  .hero { gap: 2rem; grid-template-columns: 1.2fr 1fr; }.hero h1 { font-size: clamp(2.5rem, 5.6vw, 3.3rem); }.hero-footnote { margin-top: 1.8rem; }.features { gap: 3rem; }.patterns { gap: 2.5rem; }.hero-actions { align-items: start; flex-direction: column; gap: .6rem; }
}
@media (max-width: 650px) {
  .shell { width: calc(100% - 2.5rem); }.site-header { padding-block: 1rem; gap: .5rem 1rem; flex-wrap: wrap; }.brand { font-size: 1.5rem; }.brand img { width: 1.75rem; height: 1.75rem; }nav { gap: .2rem 1rem; }nav a { font-size: .8rem; }.hero { grid-template-columns: 1fr; padding-block: 2.5rem 3.5rem; gap: 3rem; }.hero-copy { max-width: 470px; }.hero h1 { font-size: clamp(2.65rem, 9.7vw, 3.8rem); }.lead { font-size: 1.05rem; }.hero-actions { flex-direction: row; align-items: center; gap: .75rem 1.2rem; }.hero-footnote { margin-top: 1.8rem; }.features { grid-template-columns: 1fr; gap: 2.4rem; padding-block: 3.5rem; }.section-intro p:last-child { max-width: 42ch; }.patterns { grid-template-columns: 1fr; gap: 2.5rem; padding-block: 1rem 3.5rem; }.chart-figure { max-width: 440px; width: 100%; margin-inline: auto; }.patterns-copy { grid-row: 1; }.patterns-copy br { display: none; }.privacy-section { padding-bottom: 3.5rem; }.privacy-panel { grid-template-columns: 1fr; gap: 1.3rem; padding: 1.75rem; }.privacy-panel > img { width: 44px; height: 44px; }.closing { padding-bottom: 3.5rem; }.site-footer { gap: 1.5rem; }.site-footer nav { flex-direction: column; gap: 0; }.site-footer .medical-note { width: 100%; }.document { padding-block: 2rem 4rem; }.document section { margin-top: 2.2rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }*, *::before, *::after { transition: none !important; } }