:root {
  --bg: #f6f8f5;
  --bg-alt: #edf2ec;
  --card: #ffffff;
  --text: #16201a;
  --muted: #5f6b64;
  --line: #e1e8e2;
  --soft: #eef2ee;
  --accent: #2f9e5b;
  --accent-ink: #ffffff;
  --accent-soft: #e0f2e6;
  --accent-deep: #1f7a43;
  --danger: #d6453d;
  --p: #4f86e8;
  --f: #e8a33b;
  --c: #9b6be0;
  --shadow: 0 1px 2px rgba(20, 30, 25, .05), 0 8px 28px rgba(20, 30, 25, .07);
  --radius: 20px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111513;
    --bg-alt: #161b18;
    --card: #1b211d;
    --text: #e9eeea;
    --muted: #97a39b;
    --line: #2b332e;
    --soft: #242b26;
    --accent: #44b872;
    --accent-ink: #0c1a11;
    --accent-soft: #1d3426;
    --accent-deep: #6fd398;
    --danger: #f06a61;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent-deep); }
img, svg { max-width: 100%; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(32px, 6vw, 56px); }
h2 { font-size: clamp(26px, 4vw, 38px); }
h3 { font-size: 19px; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
section { padding: 72px 0; }
.alt { background: var(--bg-alt); }
.eyebrow { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: 10px; }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head p { color: var(--muted); font-size: 18px; }

/* шапка */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: -.02em; }
.brand img { width: 32px; height: 32px; border-radius: 9px; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; white-space: nowrap; }
.nav a:hover { color: var(--text); }
.top .btn { margin-left: 8px; }
@media (max-width: 1000px) { .nav { display: none; } .top .btn { margin-left: auto; } }

/* кнопки */
.btn { white-space: nowrap; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 22px; border-radius: 14px; font-weight: 650; font-size: 16px; text-decoration: none; border: 0; cursor: pointer; background: var(--soft); color: var(--text); font-family: inherit; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; border: 1.5px solid var(--line); }
.btn.sm { min-height: 40px; padding: 0 16px; font-size: 15px; border-radius: 12px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* первый экран */
.hero { padding: 64px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero h1 span { color: var(--accent); }
.hero .lead { font-size: 20px; color: var(--muted); max-width: 560px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 22px; color: var(--muted); font-size: 15px; }
.trust span::before { content: "✓"; color: var(--accent); font-weight: 800; margin-right: 6px; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .hero { padding-top: 36px; } }

/* макет телефона с дневником */
.phone { width: 300px; max-width: 100%; margin: 0 auto; border-radius: 42px; padding: 12px; background: #0f1411; box-shadow: 0 30px 70px rgba(10, 30, 20, .25); }
.screen { border-radius: 32px; background: #f4f6f3; color: #17201b; padding: 18px 14px 14px; font-size: 13px; overflow: hidden; }
.screen .day { text-align: center; font-weight: 700; font-size: 16px; margin-bottom: 10px; }
.screen .card { background: #fff; border-radius: 16px; padding: 12px; margin-bottom: 8px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.screen .sum { display: flex; align-items: center; justify-content: space-between; }
.screen .sum b { display: block; font-size: 15px; }
.screen .sum small { color: #6b766f; font-size: 11px; }
.screen .ring { position: relative; width: 104px; height: 104px; }
.screen .ring div { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.screen .ring b { font-size: 20px; }
.screen .bars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; font-size: 11px; color: #6b766f; }
.screen .bars i { display: block; height: 4px; border-radius: 4px; background: #eef2ee; margin-top: 4px; overflow: hidden; }
.screen .bars i::after { content: ""; display: block; height: 100%; width: var(--w); background: var(--c1); }
.screen .meal { display: flex; align-items: center; gap: 10px; }
.screen .meal .ic { width: 30px; height: 30px; border-radius: 9px; background: #eef2ee; display: grid; place-items: center; }
.screen .meal div { flex: 1; }
.screen .meal small { display: block; color: #6b766f; font-size: 11px; }
.screen .plus { width: 26px; height: 26px; border-radius: 50%; background: #2f9e5b; color: #fff; display: grid; place-items: center; font-size: 17px; }
.screen .row { display: flex; justify-content: space-between; border-top: 1px solid #e4e9e5; padding-top: 7px; margin-top: 7px; }
.screen .row small { display: block; color: #6b766f; font-size: 10px; }
.screen .chip { display: inline-block; margin-top: 8px; background: #e2f3e8; color: #2f9e5b; border-radius: 12px; padding: 3px 9px; font-size: 11px; font-weight: 600; }

/* карточки */
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .g4 { grid-template-columns: repeat(2, 1fr); } .g3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } }
.card { background: var(--card); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.card .ico { width: 46px; height: 46px; border-radius: 14px; background: var(--accent-soft); display: grid; place-items: center; font-size: 23px; margin-bottom: 14px; }
.card h3 { margin-bottom: 6px; }
.card p { color: var(--muted); font-size: 16px; }

/* шаги */
.steps { counter-reset: s; display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-top: 58px; }
.step::before { counter-increment: s; content: counter(s); position: absolute; top: 22px; left: 24px; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 800; display: grid; place-items: center; font-size: 15px; }

/* установка */
.tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--soft); border-radius: 14px; margin-bottom: 20px; }
.tabs button { border: 0; background: transparent; font: inherit; font-weight: 600; font-size: 15px; padding: 9px 18px; border-radius: 10px; cursor: pointer; color: var(--muted); }
.tabs button[aria-selected="true"] { background: var(--card); color: var(--text); box-shadow: var(--shadow); }
.install-panel ol { margin: 0; padding-left: 22px; }
.install-panel li { margin-bottom: 10px; }
.install-panel li::marker { font-weight: 700; color: var(--accent); }
.kbd { display: inline-block; padding: 1px 8px; border-radius: 7px; background: var(--soft); border: 1px solid var(--line); font-size: 15px; font-weight: 600; white-space: nowrap; }

/* продукты */
.foods { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 960px) { .foods { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 420px) { .foods { grid-template-columns: 1fr; } }
.food-link { display: flex; justify-content: space-between; gap: 10px; align-items: center; padding: 14px 16px; background: var(--card); border-radius: 14px; text-decoration: none; color: var(--text); box-shadow: var(--shadow); font-weight: 500; }
.food-link b { color: var(--accent-deep); white-space: nowrap; font-size: 15px; }
.food-link:hover { outline: 2px solid var(--accent); }

/* вопросы */
.faq details { background: var(--card); border-radius: 16px; padding: 4px 22px; margin-bottom: 10px; box-shadow: var(--shadow); }
.faq summary { cursor: pointer; font-weight: 650; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); }

.cta { text-align: center; }
.cta .card { padding: 48px 24px; background: linear-gradient(135deg, var(--accent-soft), var(--card)); }
.cta .btn-row { justify-content: center; }

/* подвал */
footer { border-top: 1px solid var(--line); padding: 40px 0 48px; font-size: 15px; color: var(--muted); }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; margin-bottom: 24px; }
@media (max-width: 700px) { footer .cols { grid-template-columns: 1fr; } }
footer a { color: var(--muted); display: block; margin-bottom: 6px; text-decoration: none; }
footer a:hover { color: var(--text); }
footer b { color: var(--text); display: block; margin-bottom: 10px; }

/* страницы продуктов и каталог */
.page { padding: 32px 0 64px; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.lead { font-size: 19px; }
.nutr { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.nutr th, .nutr td { padding: 11px 0; border-bottom: 1px solid var(--line); text-align: right; }
.nutr th:first-child, .nutr td:first-child { text-align: left; }
.nutr thead th { font-size: 13px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.nutr tr.main td { font-weight: 750; font-size: 19px; }
.split { display: flex; height: 12px; border-radius: 6px; overflow: hidden; margin: 14px 0 8px; background: var(--soft); }
.split i { display: block; height: 100%; }
.split .p { background: var(--p); } .split .f { background: var(--f); } .split .c { background: var(--c); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 14px; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 6px; background: var(--k); vertical-align: 0; }
.calc { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; }
@media (max-width: 560px) { .calc { grid-template-columns: 1fr; } }
.unit-input { position: relative; max-width: 220px; }
.unit-input input, .field input, .field select { width: 100%; padding: 12px 44px 12px 14px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--card); color: var(--text); font: inherit; min-height: 48px; }
.field select, .field input { padding-right: 14px; }
.unit-input i { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-style: normal; color: var(--muted); pointer-events: none; }
.calc-out { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; text-align: center; }
.calc-out b { display: block; font-size: 22px; font-variant-numeric: tabular-nums; }
.calc-out small { color: var(--muted); font-size: 13px; }
.calc-out div:first-child b { color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { border: 0; background: var(--soft); color: var(--text); font: inherit; font-size: 14px; font-weight: 550; padding: 7px 13px; border-radius: 20px; cursor: pointer; }
.chip.on { background: var(--accent); color: var(--accent-ink); }
.note { background: var(--accent-soft); border-radius: 14px; padding: 16px 18px; }
.app-cta { display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; background: var(--accent); color: var(--accent-ink); border-radius: var(--radius); padding: 24px 26px; }
.app-cta p { margin: 0; opacity: .9; }
.app-cta b { font-size: 20px; display: block; }
.app-cta .btn { background: var(--accent-ink); color: var(--accent); }
.layout { display: grid; grid-template-columns: 1fr 320px; gap: 24px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }
.stack > * + * { margin-top: 16px; }
.side a { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--text); }
.side a:last-child { border-bottom: 0; }
.side a span { color: var(--muted); white-space: nowrap; font-size: 15px; }

.search-box { width: 100%; padding: 14px 18px; font: inherit; font-size: 18px; border-radius: 16px; border: 1.5px solid var(--line); background: var(--card); color: var(--text); margin-bottom: 8px; }
.search-box:focus, .field input:focus, .field select:focus, .unit-input input:focus { outline: none; border-color: var(--accent); }
.cat { margin-top: 28px; }
.cat table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; background: var(--card); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); }
.cat th, .cat td { padding: 11px 14px; border-bottom: 1px solid var(--line); text-align: right; font-size: 15px; }
.cat th:first-child, .cat td:first-child { text-align: left; }
.cat th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }
.cat tr:last-child td { border-bottom: 0; }
.cat td a { color: var(--text); text-decoration: none; font-weight: 500; }
.cat td a:hover { color: var(--accent-deep); text-decoration: underline; }
@media (max-width: 560px) { .cat .hide-s { display: none; } }
.toc { display: flex; flex-wrap: wrap; gap: 8px; }
.toc a { background: var(--card); padding: 7px 13px; border-radius: 20px; text-decoration: none; color: var(--text); font-size: 14px; box-shadow: var(--shadow); }

/* калькулятор нормы */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }
.field span { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; font-weight: 500; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label span { display: block; text-align: center; padding: 12px; border-radius: 12px; border: 1.5px solid var(--line); font-weight: 600; }
.seg input:checked + span { border-color: var(--accent); background: var(--accent-soft); }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.result { display: none; }
.result.show { display: block; }
.big-num { font-size: clamp(44px, 9vw, 72px); font-weight: 800; color: var(--accent); letter-spacing: -.03em; line-height: 1; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0; }
.kpis div { background: var(--soft); border-radius: 14px; padding: 12px; text-align: center; }
.kpis b { display: block; font-size: 20px; }
.kpis small { color: var(--muted); font-size: 13px; }