:root {
  color-scheme: light;
  --ink: #17332e;
  --muted: #60746f;
  --page: #f2f7f5;
  --paper: rgba(255,255,255,.84);
  --line: rgba(28,70,61,.13);
  --green: #286c5e;
  --green-deep: #1c5148;
  --flag: #9a5b12;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; min-width: 320px; color: var(--ink);
  background: radial-gradient(circle at 88% 5%, rgba(169,199,220,.34), transparent 28rem), radial-gradient(circle at 8% 36%, rgba(127,197,179,.20), transparent 32rem), linear-gradient(180deg,#f8fbfa 0%,var(--page) 55%,#edf4f2 100%);
}
a { color: inherit; }
.home-header, main, footer { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
.home-header { min-height: 78px; display:flex; align-items:center; justify-content:space-between; gap:28px; border-bottom:1px solid var(--line); }
.home-brand { display:inline-flex; align-items:center; gap:11px; color:var(--ink); text-decoration:none; letter-spacing:-.025em; }
.home-brand > span { width:36px; height:36px; display:grid; place-items:center; color:white; background:var(--green); border-radius:12px; font-family:Georgia,serif; font-style:italic; box-shadow:0 8px 24px rgba(40,108,94,.18); }
.home-brand strong { font-size:1rem; }
nav { display:flex; align-items:center; gap:24px; flex-wrap:wrap; }
nav > a { color:var(--muted); text-decoration:none; font-size:.86rem; font-weight:650; }
nav > a:hover { color:var(--green-deep); }
nav > a[aria-current="page"] { color:var(--green-deep); }
.primary-cta { display:inline-flex; align-items:center; justify-content:center; gap:12px; min-height:52px; padding:0 21px; color:white!important; background:var(--green); border-radius:14px; text-decoration:none; font-weight:760; font-size:.9rem; box-shadow:0 12px 34px rgba(40,108,94,.20); transition:transform 160ms ease, background 160ms ease; }
.primary-cta:hover { transform:translateY(-2px); background:var(--green-deep); }
.secondary-cta { display:inline-flex; align-items:center; justify-content:center; gap:12px; min-height:52px; padding:0 20px; color:var(--green-deep); background:rgba(255,255,255,.74); border:1px solid rgba(40,108,94,.16); border-radius:14px; text-decoration:none; font-size:.9rem; font-weight:750; transition:transform 160ms ease, background 160ms ease, border-color 160ms ease; }
.secondary-cta:hover { transform:translateY(-2px); background:#fff; border-color:rgba(40,108,94,.3); }

/* hero */
.home-hero { min-height:560px; display:grid; grid-template-columns:minmax(0,1fr) minmax(420px,.92fr); align-items:center; gap:60px; padding:72px 0 80px; }
.home-eyebrow { margin:0 0 14px; color:var(--green); text-transform:uppercase; letter-spacing:.16em; font-size:.72rem; font-weight:820; }
h1,h2,h3,p { margin-top:0; }
h1 { max-width:750px; margin-bottom:24px; font-size:clamp(2.9rem,5.6vw,5.4rem); line-height:.98; letter-spacing:-.06em; font-weight:690; }
h1 span { color:#75938c; }
.hero-lead { max-width:640px; margin-bottom:28px; color:var(--muted); font-size:1.05rem; line-height:1.75; }
.hero-actions { display:flex; flex-wrap:wrap; align-items:center; gap:20px; }

.evidence-summary { display:flex; flex-direction:column; justify-content:center; gap:12px; padding:34px; background:rgba(255,255,255,.9); border:1px solid rgba(255,255,255,.95); border-radius:28px; box-shadow:0 26px 80px rgba(45,84,76,.12); }
.summary-stat { padding:20px; background:rgba(246,250,248,.9); border:1px solid var(--line); border-radius:18px; }
.summary-stat-row { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.summary-stat strong { display:block; margin-bottom:8px; color:var(--green-deep); font-size:clamp(1.4rem,2.6vw,2.1rem); line-height:1; letter-spacing:-.03em; }
.summary-stat-primary strong { font-size:clamp(2.6rem,5vw,3.8rem); }
.summary-stat span { display:block; color:#4f6963; font-size:.78rem; line-height:1.5; font-weight:620; }
.summary-note { margin:8px 2px 0; color:var(--muted); font-size:.75rem; line-height:1.5; }

/* section intro */
.evidence-intro { display:grid; grid-template-columns:.72fr 1.28fr; gap:60px; padding:76px 0 36px; border-top:1px solid var(--line); }
.evidence-intro h2 { max-width:760px; margin-bottom:16px; font-size:clamp(1.9rem,3.3vw,3rem); line-height:1.08; letter-spacing:-.05em; }
.evidence-intro div > p { max-width:760px; color:var(--muted); line-height:1.75; }

/* topic browser — compact cards with a focused reading panel */
.topics-section { padding-bottom:90px; display:flex; flex-direction:column; gap:18px; }
.topics-controls { display:flex; align-items:center; justify-content:space-between; gap:18px; }
.topic-filter-list { display:flex; flex-wrap:wrap; gap:8px; }
.topic-filter {
  appearance:none; min-height:38px; padding:0 16px; border:1px solid rgba(33,81,71,.14);
  border-radius:999px; color:#506b63; background:rgba(255,255,255,.72);
  cursor:pointer; font:700 .76rem/1 Inter,ui-sans-serif,system-ui,sans-serif;
  transition:color 150ms ease, background 150ms ease, border-color 150ms ease, transform 150ms ease;
}
.topic-filter:hover { color:var(--green-deep); border-color:rgba(40,108,94,.32); transform:translateY(-1px); }
.topic-filter[aria-pressed="true"] { color:#fff; background:var(--green); border-color:var(--green); box-shadow:0 7px 18px rgba(40,108,94,.16); }
.topic-filter:focus-visible { outline:3px solid rgba(40,108,94,.3); outline-offset:2px; }
.topics-count { flex:0 0 auto; margin:0; color:var(--muted); font-size:.76rem; font-weight:650; white-space:nowrap; }
.topics-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.topics-loading, .topics-error { grid-column:1/-1; padding:24px; color:var(--muted); background:var(--paper); border:1px solid var(--line); border-radius:18px; }
.topics-error { color:var(--flag); }

.topic-card {
  min-width:0; min-height:238px;
  background:rgba(255,255,255,.9); border:1px solid rgba(33,81,71,.11);
  border-radius:20px; box-shadow:0 8px 28px rgba(51,86,78,.055);
  overflow:hidden; transition:transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}
.topic-card:hover { transform:translateY(-3px); border-color:rgba(40,108,94,.24); box-shadow:0 16px 38px rgba(51,86,78,.1); }
.topic-card-button {
  appearance:none; width:100%; min-height:238px; padding:24px; border:0; border-radius:inherit;
  background:transparent; color:inherit; font:inherit; text-align:left; cursor:pointer;
  display:flex; flex-direction:column; align-items:stretch;
}
.topic-card-button:focus-visible { outline:3px solid rgba(40,108,94,.38); outline-offset:-4px; }
.topic-card-topline { display:flex; justify-content:space-between; align-items:center; gap:16px; }
.topic-category { color:var(--green); text-transform:uppercase; letter-spacing:.13em; font-size:.68rem; font-weight:820; }
.topic-card-arrow {
  width:30px; height:30px; display:grid; place-items:center; border-radius:50%;
  color:var(--green-deep); background:rgba(40,108,94,.07); font-size:.88rem;
  transition:transform 160ms ease, background 160ms ease;
}
.topic-card:hover .topic-card-arrow { transform:translate(2px,-2px); background:rgba(40,108,94,.12); }
.topic-card-title { display:block; margin-top:24px; font-size:clamp(1.35rem,2vw,1.72rem); line-height:1.12; letter-spacing:-.035em; font-weight:740; }
.topic-short {
  display:-webkit-box; margin-top:10px; color:var(--muted); font-size:.86rem; line-height:1.55;
  -webkit-box-orient:vertical; -webkit-line-clamp:3; overflow:hidden;
}
.topic-card-action { margin-top:auto; padding-top:20px; color:var(--green-deep); font-size:.8rem; font-weight:750; }

body:has(.topic-dialog[open]) { overflow:hidden; }
.topic-dialog {
  width:min(690px,100%); height:100dvh; max-width:none; max-height:none;
  margin:0 0 0 auto; padding:0; border:0; border-radius:28px 0 0 28px;
  color:var(--ink); background:#fff; box-shadow:-24px 0 70px rgba(21,55,47,.22);
  overflow:hidden;
}
.topic-dialog::backdrop { background:rgba(14,35,30,.46); backdrop-filter:blur(3px); }
.topic-dialog-shell { height:100%; display:flex; flex-direction:column; }
.topic-dialog-header {
  position:relative; flex:0 0 auto; padding:38px 72px 28px 40px;
  background:linear-gradient(145deg,#eff8f5 0%,#f8fbfa 100%); border-bottom:1px solid var(--line);
}
.topic-dialog-header h3 { margin:9px 0 10px; max-width:520px; font-size:clamp(2rem,4vw,3rem); line-height:1.02; letter-spacing:-.05em; }
.topic-dialog-summary { max-width:540px; margin:0; color:var(--muted); font-size:.92rem; line-height:1.6; }
.topic-dialog-close {
  appearance:none; position:absolute; top:26px; right:28px; width:38px; height:38px;
  display:grid; place-items:center; padding:0; border:1px solid rgba(33,81,71,.13); border-radius:50%;
  color:var(--green-deep); background:rgba(255,255,255,.8); cursor:pointer; font:500 1.45rem/1 system-ui;
}
.topic-dialog-close:hover { background:#fff; }
.topic-dialog-close:focus-visible { outline:3px solid rgba(40,108,94,.34); outline-offset:2px; }
.topic-dialog-body { min-height:0; padding:32px 40px 38px; overflow:auto; }
.topic-dialog-body h4 { margin:0 0 9px; color:var(--green-deep); font-size:.84rem; line-height:1.3; }
.topic-dialog-body section > p { margin:0; color:#405b54; font-size:.9rem; line-height:1.68; }
.topic-reading-grid { display:grid; grid-template-columns:1fr 1fr; gap:26px; }
.topic-actions { margin:28px 0; padding:20px 22px; border-radius:16px; background:#eff7f4; border:1px solid rgba(40,108,94,.08); }
.topic-actions ul { margin:0; padding-left:20px; }
.topic-actions li { margin:5px 0; color:var(--ink); font-size:.92rem; line-height:1.55; }
.topic-limitations { padding-top:24px; border-top:1px solid var(--line); }
.topic-limitations > p { color:var(--muted); font-size:.84rem; }
.topic-sources { margin-top:26px; padding-top:24px; border-top:1px solid var(--line); }
.topic-source-list { margin:0; padding-left:19px; }
.topic-source-list li { margin:9px 0; padding-left:3px; color:var(--muted); font-size:.8rem; line-height:1.5; }
.topic-source-list a { color:var(--green-deep); text-underline-offset:3px; text-decoration-thickness:1px; }
.source-year { color:var(--muted); }
.source-flag { color:var(--flag); font-size:.8rem; }
.topic-empty { margin:0; color:var(--muted); font-size:.86rem; }
.topic-dialog-disclaimer { margin:28px 0 0; padding-top:20px; border-top:1px solid var(--line); color:#71827d; font-size:.72rem; line-height:1.5; }

/* healthy study behaviour guide */
.guide-hero {
   min-height:470px; display:grid; grid-template-columns:minmax(0,1.2fr) minmax(360px,.8fr);
  align-items:center; gap:70px; padding:68px 0 72px;
}
.guide-hero h1 { max-width:780px; font-size:clamp(2.8rem,5.2vw,4.9rem); }
.guide-time-summary {
  display:grid; gap:10px; padding:28px; background:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.95); border-radius:26px;
  box-shadow:0 24px 70px rgba(45,84,76,.11);
}
.guide-time-summary .home-eyebrow { margin-bottom:6px; }
.guide-time-row {
  display:grid; grid-template-columns:48px 1fr; align-items:center; gap:14px;
  padding:14px 16px; background:rgba(246,250,248,.92); border:1px solid var(--line); border-radius:15px;
}
.guide-time-row strong { color:var(--green-deep); font-size:1.65rem; line-height:1; letter-spacing:-.04em; }
.guide-time-row span { color:#4f6963; font-size:.78rem; line-height:1.45; font-weight:620; }
.guide-time-summary > p:last-child { margin:7px 2px 0; color:var(--muted); font-size:.72rem; line-height:1.5; }
.guide-browser { padding:72px 0 92px; border-top:1px solid var(--line); }
.guide-section-heading { display:flex; justify-content:space-between; align-items:end; gap:36px; margin-bottom:32px; }
.guide-section-heading h2 { margin-bottom:12px; font-size:clamp(2rem,3.4vw,3.1rem); line-height:1.05; letter-spacing:-.05em; }
.guide-section-heading div > p:last-child { max-width:760px; margin:0; color:var(--muted); line-height:1.7; }
.activity-controls {
  display:flex; justify-content:space-between; align-items:end; gap:24px; margin-bottom:22px;
  padding:18px 20px; background:rgba(255,255,255,.54); border:1px solid var(--line); border-radius:17px;
}
.activity-control-label { margin:0 0 10px; color:var(--green-deep); font-size:.72rem; font-weight:760; }
.duration-filter-list { display:flex; flex-wrap:wrap; gap:8px; }
.activity-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.activity-grid > .topics-loading, .activity-grid > .topics-error { grid-column:1/-1; }
.activity-card {
  min-width:0; min-height:270px; overflow:hidden; background:rgba(255,255,255,.92);
  border:1px solid rgba(33,81,71,.11); border-radius:20px;
  box-shadow:0 8px 28px rgba(51,86,78,.055);
  transition:transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}
.activity-card:hover { transform:translateY(-3px); border-color:rgba(40,108,94,.24); box-shadow:0 16px 38px rgba(51,86,78,.1); }
.activity-card-button {
  appearance:none; width:100%; min-height:270px; padding:23px; border:0; border-radius:inherit;
  display:flex; flex-direction:column; align-items:stretch; color:inherit; background:transparent;
  cursor:pointer; font:inherit; text-align:left;
}
.activity-card-button:focus-visible { outline:3px solid rgba(40,108,94,.38); outline-offset:-4px; }
.activity-card-topline { display:flex; align-items:center; justify-content:space-between; gap:14px; }
.activity-duration {
  flex:0 0 auto; padding:7px 9px; color:var(--green-deep); background:rgba(40,108,94,.07);
  border:1px solid rgba(40,108,94,.08); border-radius:99px; font-size:.67rem; font-weight:760;
}
.activity-card-title { display:block; margin-top:25px; font-size:clamp(1.35rem,2vw,1.72rem); line-height:1.12; letter-spacing:-.035em; font-weight:740; }
.activity-card-copy {
  display:-webkit-box; margin-top:11px; color:var(--muted); font-size:.84rem; line-height:1.58;
  -webkit-box-orient:vertical; -webkit-line-clamp:3; overflow:hidden;
}
.activity-card-footer {
  display:flex; align-items:center; justify-content:space-between; gap:12px; margin-top:auto; padding-top:22px;
  color:var(--muted); font-size:.7rem; font-weight:650;
}
.activity-card-action { color:var(--green-deep); font-size:.75rem; font-weight:760; white-space:nowrap; }
.activity-card:hover .activity-card-action { color:var(--green); }
.activity-dialog-header { padding-bottom:30px; }
.activity-detail-meta { display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.activity-detail-meta span {
  padding:7px 10px; color:#4d6861; background:rgba(255,255,255,.72);
  border:1px solid rgba(40,108,94,.1); border-radius:99px; font-size:.68rem; font-weight:700;
}
.activity-section-number { margin:0 0 7px; color:var(--green); text-transform:uppercase; letter-spacing:.14em; font-size:.66rem; font-weight:820; }
.activity-steps-section > h4 { font-size:1.05rem; }
.activity-step-list { margin:22px 0 0; padding:0; list-style:none; counter-reset:activity-step; }
.activity-step-list li {
  counter-increment:activity-step; display:grid; grid-template-columns:38px 1fr; align-items:start; gap:14px;
  padding:16px 0; color:#405b54; border-top:1px solid var(--line); font-size:.9rem; line-height:1.6;
}
.activity-step-list li::before {
  content:counter(activity-step); width:34px; height:34px; display:grid; place-items:center;
  color:white; background:var(--green); border-radius:11px; font-size:.72rem; font-weight:800;
}
.activity-step-list li span { padding-top:5px; }
.activity-caution { margin-top:26px; padding:19px 20px; background:#f7f4ec; border:1px solid rgba(154,91,18,.1); border-radius:16px; }
.activity-caution h4 { color:#755019; }
.activity-caution p { margin:0; color:#665a45; font-size:.82rem; line-height:1.6; }
.activity-related-topics { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-top:26px; }
.activity-related-topics > span { width:100%; margin-bottom:2px; color:var(--green-deep); font-size:.76rem; font-weight:750; }
.activity-related-topics a { padding:7px 10px; color:#506b63; background:#eff7f4; border-radius:99px; text-decoration:none; font-size:.7rem; font-weight:680; }
.guide-evidence-note {
  display:grid; grid-template-columns:.85fr 1.15fr; align-items:center; gap:54px;
  margin-bottom:82px; padding:36px 40px; background:linear-gradient(120deg,rgba(217,240,233,.82),rgba(229,240,247,.82));
  border:1px solid rgba(255,255,255,.82); border-radius:26px;
}
.guide-evidence-note h2 { margin:0; font-size:clamp(1.55rem,2.7vw,2.25rem); letter-spacing:-.045em; }
.guide-evidence-note > p { margin:0; color:var(--muted); font-size:.86rem; line-height:1.7; }

/* live study session — AC2.1.1 */
.coach-intro {
  display:grid; grid-template-columns:minmax(0,1.18fr) minmax(340px,.82fr);
  align-items:center; gap:68px; padding:58px 0 48px;
}
.coach-intro h1 { max-width:760px; font-size:clamp(2.7rem,5vw,4.8rem); }
.coach-intro .hero-lead { margin-bottom:0; }
.coach-clock {
  padding:27px 29px; background:rgba(255,255,255,.88); border:1px solid rgba(255,255,255,.95);
  border-radius:24px; box-shadow:0 22px 65px rgba(45,84,76,.1);
}
.coach-clock-topline { display:flex; align-items:center; justify-content:space-between; gap:20px; color:var(--muted); font-size:.76rem; font-weight:680; }
.coach-clock output { display:block; margin:22px 0 13px; color:var(--ink); font-size:clamp(2.7rem,5vw,4.4rem); line-height:.9; letter-spacing:-.07em; font-weight:700; font-variant-numeric:tabular-nums; }
.coach-clock p { margin:0; color:var(--muted); font-size:.78rem; line-height:1.55; }
.session-state { padding:7px 10px; border-radius:99px; color:#506b63; background:#edf5f2; font-size:.66rem; letter-spacing:.03em; }
.session-state[data-state="active"] { color:#fff; background:var(--green); }
.session-state[data-state="starting"] { color:#755019; background:#f7f0df; }
.session-state[data-state="paused"] { color:#6a5937; background:#f3eee2; }
.session-state[data-state="error"] { color:#8a4f15; background:#faeee2; }

.coach-workspace { display:grid; grid-template-columns:minmax(0,1.28fr) minmax(340px,.72fr); gap:18px; padding-bottom:28px; }
.coach-camera-card, .coach-metric-card {
  background:rgba(255,255,255,.9); border:1px solid rgba(33,81,71,.11); box-shadow:0 14px 44px rgba(51,86,78,.07);
}
.coach-camera-card { padding:28px; border-radius:26px; }
.coach-card-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:24px; margin-bottom:20px; }
.coach-card-heading .home-eyebrow { margin-bottom:8px; }
.coach-card-heading h2 { margin:0; font-size:1.45rem; letter-spacing:-.035em; }
.coach-local-pill { display:flex; align-items:center; gap:7px; padding:8px 11px; color:#4e6a62; background:#edf7f3; border:1px solid rgba(40,108,94,.1); border-radius:99px; font-size:.68rem; font-weight:720; white-space:nowrap; }
.coach-local-pill span { color:var(--green); font-size:.55rem; }
.coach-camera-shell { position:relative; min-height:430px; overflow:hidden; display:grid; place-items:center; background:#dfece8; border:1px solid rgba(40,108,94,.12); border-radius:20px; }
.coach-camera-shell video { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transform:scaleX(-1); opacity:0; transition:opacity 180ms ease; }
.coach-camera-shell.has-camera video { opacity:1; }
.coach-camera-placeholder { display:grid; justify-items:center; gap:8px; padding:30px; color:#4e6962; text-align:center; transition:opacity 160ms ease; }
.coach-camera-placeholder strong { font-size:.94rem; }
.coach-camera-placeholder > span:last-child { color:#71847f; font-size:.75rem; }
.coach-camera-shell.has-camera .coach-camera-placeholder { opacity:0; pointer-events:none; }
.coach-camera-icon { width:56px; height:56px; display:grid; place-items:center; margin-bottom:4px; color:var(--green); background:rgba(255,255,255,.76); border-radius:18px; font-size:1.45rem; }
.coach-pause-cover { position:absolute; inset:0; display:grid; place-items:center; color:#fff; background:rgba(18,49,42,.66); opacity:0; pointer-events:none; transition:opacity 160ms ease; }
.coach-pause-cover span { padding:10px 15px; background:rgba(13,38,32,.72); border-radius:99px; font-size:.78rem; font-weight:760; }
.coach-camera-shell.is-paused .coach-pause-cover { opacity:1; }
.coach-session-actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:18px; }
.coach-button { appearance:none; min-height:46px; padding:0 18px; border-radius:13px; cursor:pointer; font:750 .8rem/1 Inter,ui-sans-serif,system-ui,sans-serif; transition:transform 150ms ease, background 150ms ease, border-color 150ms ease; }
.coach-button:hover:not(:disabled) { transform:translateY(-1px); }
.coach-button:focus-visible { outline:3px solid rgba(40,108,94,.32); outline-offset:2px; }
.coach-button:disabled { cursor:not-allowed; opacity:.42; }
.coach-button-primary { color:#fff; background:var(--green); border:1px solid var(--green); }
.coach-button-primary:hover:not(:disabled) { background:var(--green-deep); }
.coach-button-secondary { color:var(--green-deep); background:#fff; border:1px solid rgba(40,108,94,.16); }
.coach-button-secondary:hover:not(:disabled) { border-color:rgba(40,108,94,.34); }
.coach-camera-note { margin:16px 0 0; color:var(--muted); font-size:.72rem; line-height:1.55; }
.coach-signals { display:grid; align-content:start; gap:12px; }
.coach-signals-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:18px; padding:4px 4px 7px; }
.coach-signals-heading .home-eyebrow { margin-bottom:7px; }
.coach-signals-heading h2 { margin:0; font-size:1.24rem; letter-spacing:-.035em; }
.analysis-status { max-width:150px; padding:7px 10px; color:#596f69; background:rgba(255,255,255,.66); border:1px solid var(--line); border-radius:99px; text-align:center; font-size:.62rem; line-height:1.25; font-weight:720; }
.analysis-status[data-state="live"] { color:#fff; background:var(--green); border-color:var(--green); }
.analysis-status[data-state="preparing"] { color:#755019; background:#f7f0df; }
.analysis-status[data-state="paused"] { color:#6a5937; background:#f3eee2; }
.analysis-status[data-state="error"] { color:#8a4f15; background:#faeee2; }
.coach-metric-card { padding:20px; border-radius:19px; }
.coach-metric-topline { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; }
.coach-metric-topline > div:first-child > p { margin:0 0 5px; color:var(--green); text-transform:uppercase; letter-spacing:.12em; font-size:.6rem; font-weight:800; }
.coach-metric-topline h3 { margin:0; font-size:1.02rem; letter-spacing:-.025em; }
.coach-score { display:flex; align-items:flex-end; gap:3px; color:var(--muted); font-size:.63rem; line-height:1; }
.coach-score strong { color:var(--green-deep); font-size:1.62rem; line-height:.82; letter-spacing:-.045em; font-variant-numeric:tabular-nums; }
.coach-meter { height:5px; margin:18px 0 13px; overflow:hidden; background:#e8efed; border-radius:99px; }
.coach-meter > div { width:0; height:100%; background:#99aaa5; border-radius:inherit; transition:width 220ms ease,background 160ms ease; }
.coach-meter > div[data-level="good"] { background:#2f806d; }
.coach-meter > div[data-level="medium"] { background:#bf8732; }
.coach-meter > div[data-level="low"] { background:#b9624f; }
.coach-metric-label { margin:0 0 6px; color:var(--ink); font-size:.76rem; font-weight:750; }
.coach-metric-detail { margin:0; color:var(--muted); font-size:.68rem; line-height:1.5; }
.coach-light-readings { display:flex; flex-wrap:wrap; gap:7px; margin-top:13px; }
.coach-light-readings span { padding:6px 8px; color:#60746f; background:#f1f7f5; border:1px solid rgba(40,108,94,.08); border-radius:9px; font-size:.61rem; }
.coach-light-readings strong { margin-left:3px; color:var(--green-deep); font-variant-numeric:tabular-nums; }
.coach-wellbeing { margin-bottom:72px; padding:30px 34px; background:linear-gradient(120deg,rgba(217,240,233,.82),rgba(229,240,247,.82)); border:1px solid rgba(255,255,255,.84); border-radius:24px; }
.coach-wellbeing-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:28px; margin-bottom:24px; }
.coach-wellbeing-heading .home-eyebrow { margin-bottom:8px; }
.coach-wellbeing-heading h2 { margin:0 0 8px; font-size:clamp(1.55rem,2.7vw,2.25rem); letter-spacing:-.045em; }
.coach-wellbeing-heading p:last-child { max-width:700px; margin:0; color:var(--muted); font-size:.8rem; line-height:1.6; }
.wellbeing-schedule-status { flex:0 0 auto; padding:8px 11px; color:#60736e; background:rgba(255,255,255,.7); border:1px solid rgba(40,108,94,.11); border-radius:99px; font-size:.67rem; font-weight:760; }
.wellbeing-schedule-status[data-state="active"] { color:#1e6958; background:#edf8f4; }
.wellbeing-schedule-status[data-state="paused"] { color:#8a5a17; background:#fff8e9; }
.wellbeing-check-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.wellbeing-check-card { display:grid; grid-template-columns:auto minmax(0,1fr) auto; align-items:center; gap:15px; padding:21px; background:rgba(255,255,255,.9); border:1px solid rgba(40,108,94,.1); border-radius:18px; box-shadow:0 12px 34px rgba(25,68,59,.05); }
.wellbeing-check-icon { width:43px; height:43px; display:grid; place-items:center; color:var(--green); background:#eaf5f1; border-radius:14px; font-size:1.1rem; font-weight:800; }
.wellbeing-check-kind { margin:0 0 4px; color:var(--green); text-transform:uppercase; letter-spacing:.11em; font-size:.57rem; font-weight:800; }
.wellbeing-check-card h3 { margin:0 0 5px; font-size:1rem; letter-spacing:-.025em; }
.wellbeing-check-rule, .wellbeing-check-context { margin:0; color:var(--muted); font-size:.67rem; line-height:1.5; }
.wellbeing-check-due { color:var(--green-deep); text-align:right; font-size:.78rem; font-variant-numeric:tabular-nums; }
.wellbeing-check-context { grid-column:2/-1; padding-top:2px; }
.coach-wellbeing-note { margin:18px 0 0; color:var(--muted); font-size:.68rem; line-height:1.55; }
.indoor-activities { margin-bottom:72px; padding:34px; background:rgba(255,255,255,.8); border:1px solid rgba(255,255,255,.9); border-radius:26px; box-shadow:0 22px 60px rgba(25,68,59,.07); }
.indoor-activities-heading { display:flex; align-items:flex-start; justify-content:space-between; gap:28px; }
.indoor-activities-heading .home-eyebrow { margin-bottom:8px; }
.indoor-activities-heading h2 { margin:0 0 9px; font-size:clamp(1.55rem,2.7vw,2.25rem); letter-spacing:-.045em; }
.indoor-activities-heading p:last-child { max-width:680px; margin:0; color:var(--muted); font-size:.8rem; line-height:1.6; }
.indoor-activity-status { flex:0 0 auto; padding:8px 11px; color:#60736e; background:#f0f6f4; border:1px solid rgba(40,108,94,.1); border-radius:99px; font-size:.67rem; font-weight:760; }
.indoor-position-controls { width:max-content; display:flex; gap:5px; margin:25px 0 18px; padding:5px; background:#edf3f1; border:1px solid rgba(40,108,94,.08); border-radius:14px; }
.indoor-position-controls button { min-width:112px; min-height:40px; padding:0 18px; color:#60736e; background:transparent; border:0; border-radius:10px; cursor:pointer; font:750 .75rem/1 Inter,ui-sans-serif,system-ui,sans-serif; }
.indoor-position-controls button[aria-pressed="true"] { color:#fff; background:var(--green); box-shadow:0 7px 18px rgba(40,108,94,.17); }
.indoor-position-controls button:hover:not([aria-pressed="true"]) { color:var(--green-deep); background:rgba(255,255,255,.65); }
.indoor-position-controls button:focus-visible, .indoor-activity-option:focus-visible { outline:3px solid rgba(40,108,94,.3); outline-offset:2px; }
.indoor-activity-workspace { display:grid; grid-template-columns:minmax(310px,.78fr) minmax(0,1.22fr); gap:18px; }
.indoor-activity-list { display:grid; align-content:start; gap:9px; }
.indoor-activity-option { width:100%; display:grid; gap:8px; padding:18px; color:var(--ink); text-align:left; background:#f7faf9; border:1px solid rgba(40,108,94,.1); border-radius:16px; cursor:pointer; transition:transform 150ms ease,border-color 150ms ease,background 150ms ease; }
.indoor-activity-option:hover { transform:translateY(-1px); border-color:rgba(40,108,94,.26); }
.indoor-activity-option[aria-pressed="true"] { background:#edf7f3; border-color:rgba(40,108,94,.35); box-shadow:inset 3px 0 0 var(--green); }
.indoor-activity-option-topline { display:flex; align-items:center; justify-content:space-between; gap:16px; color:var(--green); text-transform:uppercase; letter-spacing:.1em; font-size:.57rem; font-weight:800; }
.indoor-activity-option > strong { font-size:.9rem; letter-spacing:-.02em; }
.indoor-activity-option > span:last-child { color:var(--muted); font-size:.68rem; line-height:1.5; }
.indoor-activity-detail { min-height:310px; display:grid; align-items:stretch; padding:30px; background:linear-gradient(135deg,#173f36,#245e52); border-radius:20px; color:#fff; }
.indoor-activity-detail-empty { align-self:center; max-width:460px; text-align:center; justify-self:center; }
.indoor-activity-detail-empty > span { width:48px; height:48px; display:grid; place-items:center; margin:0 auto 16px; color:#c9eee3; background:rgba(255,255,255,.1); border-radius:15px; font-size:1.15rem; }
.indoor-activity-detail h3 { margin:0 0 12px; font-size:clamp(1.5rem,3vw,2.35rem); letter-spacing:-.045em; }
.indoor-activity-detail-empty p, .indoor-activity-description { margin:0; color:rgba(235,248,244,.72); font-size:.8rem; line-height:1.65; }
.indoor-activity-detail-content { display:flex; flex-direction:column; }
.indoor-activity-detail-content .home-eyebrow { color:#a8ddd0; }
.indoor-activity-description { max-width:650px; font-size:.88rem; }
.indoor-activity-target { margin-top:auto; padding:18px 20px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.09); border-radius:15px; }
.indoor-activity-target span { color:#a8ddd0; text-transform:uppercase; letter-spacing:.1em; font-size:.58rem; font-weight:800; }
.indoor-activity-target p { margin:7px 0 0; color:#fff; font-size:.77rem; line-height:1.55; }
.indoor-prepare-button { align-self:flex-start; margin-top:16px; color:var(--green-deep); background:#fff; border:1px solid rgba(255,255,255,.9); }
.indoor-prepare-button:hover { background:#e9f5f1; }
.guided-movement { min-width:0; }
.guided-movement-heading { margin-bottom:22px; }
.guided-movement-heading h3 { margin-bottom:8px; }
.guided-movement-heading > div > p:last-child { max-width:700px; margin:0; color:rgba(235,248,244,.72); font-size:.78rem; line-height:1.6; }
.guided-movement-layout { display:grid; grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr); gap:22px; }
.three-model-host { position:relative; min-height:430px; overflow:hidden; background:radial-gradient(circle at 50% 28%,#f4fbf8,#cfe0dc); border:1px solid rgba(255,255,255,.15); border-radius:17px; }
.three-model-canvas { position:absolute; inset:0; width:100%; height:100%; display:block; }
.three-model-status { position:absolute; inset:0; z-index:2; display:grid; align-content:center; justify-items:center; gap:12px; padding:28px; color:#31594f; background:rgba(226,239,235,.94); text-align:center; font-size:.72rem; line-height:1.5; transition:opacity 180ms ease; }
.three-model-status button { display:none; min-height:39px; padding:0 15px; color:#fff; background:var(--green); border:0; border-radius:11px; cursor:pointer; font:740 .7rem/1 Inter,ui-sans-serif,system-ui,sans-serif; }
.three-model-host[data-model-state="ready"] .three-model-status { opacity:0; pointer-events:none; }
.three-model-host[data-model-state="error"] .three-model-status button { display:block; }
.movement-phase-badge { position:absolute; z-index:3; left:14px; bottom:14px; padding:8px 11px; color:#fff; background:rgba(18,56,48,.92); border:1px solid rgba(255,255,255,.15); border-radius:99px; font-size:.65rem; font-weight:760; }
.model-view-controls { width:max-content; display:flex; gap:5px; margin:10px auto 0; padding:4px; background:rgba(255,255,255,.09); border-radius:11px; }
.model-view-controls button { min-width:72px; min-height:35px; padding:0 12px; color:rgba(235,248,244,.72); background:transparent; border:0; border-radius:8px; cursor:pointer; font:720 .66rem/1 Inter,ui-sans-serif,system-ui,sans-serif; }
.model-view-controls button[aria-pressed="true"] { color:var(--green-deep); background:#fff; }
.model-view-controls button:focus-visible, .three-model-status button:focus-visible { outline:3px solid rgba(172,226,211,.72); outline-offset:2px; }
.model-credit { margin:8px 0 0; color:rgba(235,248,244,.46); text-align:center; font-size:.57rem; }
.guided-movement-instructions { padding:23px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.09); border-radius:17px; }
.guided-movement-instructions .home-eyebrow { color:#a8ddd0; }
.guided-movement-instructions h4 { margin:0 0 18px; font-size:1.04rem; letter-spacing:-.025em; }
.guided-movement-steps { display:grid; gap:14px; margin:0; padding:0; list-style:none; counter-reset:movement-step; }
.guided-movement-steps li { display:grid; grid-template-columns:30px minmax(0,1fr); gap:11px; align-items:start; color:rgba(244,251,248,.88); font-size:.72rem; line-height:1.55; counter-increment:movement-step; }
.guided-movement-steps li::before { content:counter(movement-step,decimal-leading-zero); width:30px; height:30px; display:grid; place-items:center; color:#bce8dc; background:rgba(255,255,255,.09); border-radius:9px; font-size:.56rem; font-weight:800; }
.guided-movement-safety { margin:20px 0 0; padding-top:16px; color:rgba(235,248,244,.58); border-top:1px solid rgba(255,255,255,.1); font-size:.64rem; line-height:1.55; }
.indoor-activity-empty { margin:0; padding:24px; color:var(--muted); background:#f7faf9; border:1px dashed rgba(40,108,94,.2); border-radius:16px; font-size:.75rem; line-height:1.55; }
.indoor-activity-note { margin:18px 0 0; color:var(--muted); font-size:.68rem; line-height:1.55; }

/* about + closing */
.research-section { display:grid; grid-template-columns:.72fr 1.28fr; gap:55px; padding:88px 0; border-top:1px solid var(--line); }
.research-section h2 { margin:0; font-size:1.9rem; letter-spacing:-.04em; }
.research-copy { display:grid; gap:14px; max-width:720px; color:var(--muted); line-height:1.75; }
.final-cta { margin-bottom:80px; padding:42px 48px; display:flex; justify-content:space-between; align-items:center; gap:32px; background:linear-gradient(120deg,rgba(217,240,233,.86),rgba(229,240,247,.86)); border:1px solid rgba(255,255,255,.82); border-radius:28px; }
.final-cta h2 { margin:0; font-size:clamp(1.6rem,2.6vw,2.3rem); letter-spacing:-.045em; }
.final-cta-note { margin:0; max-width:320px; color:var(--muted); font-size:.82rem; line-height:1.5; text-align:right; }

footer { min-height:105px; display:flex; align-items:center; justify-content:space-between; gap:40px; padding:28px 0; border-top:1px solid var(--line); }
footer p { max-width:720px; margin:0; color:var(--muted); text-align:right; font-size:.74rem; line-height:1.6; }

@media (max-width:1000px) {
  .home-hero { grid-template-columns:1fr; min-height:auto; }
  .evidence-summary { max-width:640px; }
  .evidence-intro, .research-section { grid-template-columns:1fr; gap:22px; }
  .topics-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .guide-hero { grid-template-columns:1fr; min-height:auto; gap:36px; }
  .guide-time-summary { max-width:640px; }
  .activity-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .coach-intro, .coach-workspace { grid-template-columns:1fr; }
  .coach-intro { gap:34px; }
  .coach-clock { max-width:640px; }
  .coach-signals { grid-template-columns:repeat(3,1fr); }
  .coach-signals-heading { grid-column:1/-1; }
  .indoor-activity-workspace { grid-template-columns:1fr; }
  .guided-movement-layout { grid-template-columns:1fr; }
}
@media (max-width:760px) {
  .home-header, main, footer { width:min(100% - 28px, 1240px); }
  .home-header { min-height:64px; }
  .home-brand strong { font-size:.94rem; }
  nav > a { font-size:.8rem; }
  .wellbeing-check-grid { grid-template-columns:1fr; }
  .indoor-activities-heading { flex-direction:column; gap:14px; }
}
@media (max-width:560px) {
  .home-header { flex-direction:column; align-items:flex-start; gap:10px; padding:14px 0; min-height:0; }
  nav { gap:18px; }
  nav > a { font-size:.8rem; }
  .home-hero { padding:52px 0 60px; gap:36px; }
  h1 { font-size:clamp(2.5rem,10vw,3.6rem); }
  .hero-actions { align-items:stretch; flex-direction:column; }
  .primary-cta { width:100%; }
  .secondary-cta { width:100%; }
  .evidence-summary { padding:22px; border-radius:22px; }
  .summary-stat-row { grid-template-columns:1fr; }
  .topics-controls { align-items:flex-start; flex-direction:column; gap:10px; }
  #health-topics-filters { width:calc(100% + 14px); overflow:hidden; }
  .topic-filter-list {
    width:100%; flex-wrap:nowrap; overflow-x:auto; padding:3px 14px 8px 3px;
    scroll-snap-type:x proximity; scrollbar-width:none;
  }
  .topic-filter-list::-webkit-scrollbar { display:none; }
  .topic-filter { flex:0 0 auto; scroll-snap-align:start; }
  .topics-grid { grid-template-columns:1fr; }
  .topic-card, .topic-card-button { min-height:210px; }
  .topic-card-button { padding:21px; }
  .topic-card-title { margin-top:18px; }
  .topic-dialog { width:100%; border-radius:0; }
  .topic-dialog-header { padding:28px 64px 24px 24px; }
  .topic-dialog-close { top:19px; right:18px; }
  .topic-dialog-body { padding:26px 24px 32px; }
  .topic-reading-grid { grid-template-columns:1fr; gap:22px; }
  .guide-hero { padding:52px 0 58px; }
  .guide-hero h1 { font-size:clamp(2.5rem,10vw,3.6rem); }
  .guide-time-summary { padding:21px; border-radius:22px; }
  .guide-browser { padding:58px 0 72px; }
  .activity-controls { align-items:flex-start; flex-direction:column; padding:16px; }
  #activity-duration-filters { width:calc(100% + 13px); overflow:hidden; }
  .duration-filter-list {
    width:100%; flex-wrap:nowrap; overflow-x:auto; padding:3px 13px 8px 3px;
    scroll-snap-type:x proximity; scrollbar-width:none;
  }
  .duration-filter-list::-webkit-scrollbar { display:none; }
  .duration-filter { flex:0 0 auto; scroll-snap-align:start; }
  .activity-grid { grid-template-columns:1fr; }
  .activity-card, .activity-card-button { min-height:244px; }
  .activity-card-button { padding:21px; }
  .activity-card-title { margin-top:21px; }
  .activity-card-footer { align-items:flex-start; flex-direction:column; }
  .guide-evidence-note { grid-template-columns:1fr; gap:20px; padding:28px 24px; }
  .coach-intro { padding:46px 0 38px; }
  .coach-intro h1 { font-size:clamp(2.45rem,10vw,3.5rem); }
  .coach-clock { padding:23px; }
  .coach-camera-card { padding:18px; border-radius:22px; }
  .coach-camera-shell { min-height:300px; border-radius:16px; }
  .coach-card-heading { align-items:flex-start; flex-direction:column; gap:12px; }
  .coach-session-actions { display:grid; grid-template-columns:1fr 1fr; }
  .coach-button-primary { grid-column:1/-1; }
  .coach-signals { grid-template-columns:1fr; }
  .coach-signals-heading { grid-column:auto; }
  .coach-wellbeing { padding:26px 23px; }
  .coach-wellbeing-heading { flex-direction:column; gap:14px; }
  .wellbeing-check-grid { grid-template-columns:1fr; }
  .wellbeing-check-card { grid-template-columns:auto minmax(0,1fr); }
  .wellbeing-check-due, .wellbeing-check-context { grid-column:2; text-align:left; }
  .indoor-activities { padding:25px 20px; border-radius:22px; }
  .indoor-position-controls { width:100%; }
  .indoor-position-controls button { flex:1; min-width:0; }
  .indoor-activity-detail { min-height:280px; padding:24px; }
  .three-model-host { min-height:380px; }
  .guided-movement-instructions { padding:20px; }
  .final-cta, footer { align-items:flex-start; flex-direction:column; }
  .final-cta-note, footer p { text-align:left; }
}
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; transition:none!important; } }