/* ==========================================================================
   AQQA Power · Зал — лендинг.
   Концепция «протокол тренировки»: графит, волосяные линии журнала,
   лаймовый маркер как единственный сигнальный цвет, меловая вставка.
   ========================================================================== */

/* ---------- Токены ---------- */

:root {
  /* поверхности */
  --c-bg: #0b0c0e;
  --c-bg-2: #0f1113;
  --c-surface: #14171a;
  --c-surface-2: #1a1e22;
  --c-surface-3: #22272c;
  --c-line: rgba(255, 255, 255, 0.075);
  --c-line-2: rgba(255, 255, 255, 0.14);

  /* текст на графите */
  --c-text: #f1f2ec;
  --c-text-2: #bcc1b9;
  --c-muted: #8d949b;

  /* мел */
  --c-chalk: #eeece5;
  --c-chalk-2: #e2dfd5;
  --c-chalk-line: rgba(18, 19, 22, 0.12);
  --c-chalk-text: #131416;
  --c-chalk-muted: #575a5f;

  /* сигнал и данные */
  --c-signal: #c8ff2e;
  --c-signal-2: #b4ea12;
  --c-signal-soft: rgba(200, 255, 46, 0.1);
  --c-signal-line: rgba(200, 255, 46, 0.4);
  --c-on-signal: #0b0c0e;
  --c-up: #7dffb3;
  --c-warn: #ffb547;
  --c-red: #ff2a22;
  --c-yellow: #ffc21a;
  --c-green: #3ee08a;
  --c-blue: #3d8fff;
  --g-chest: #ff6b4a;
  --g-back: #4da3ff;
  --g-legs: #4fe3a1;
  --g-delt: #ffc857;
  --g-arms: #ff8fb1;

  /* типографика */
  --f-display: "Unbounded", "Manrope", "Segoe UI", sans-serif;
  --f-body: "Manrope", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", monospace;
  --t-display: clamp(2.35rem, 0.9rem + 5.6vw, 6rem);
  --t-display-2: clamp(2rem, 0.9rem + 4vw, 4.4rem);
  --t-h2: clamp(1.75rem, 1.05rem + 2.6vw, 3.2rem);
  --t-h3: 1.2rem;
  --t-lead: clamp(1.06rem, 0.98rem + 0.35vw, 1.25rem);
  --t-body: 1.0625rem;
  --t-small: 0.9rem;
  --t-label: 0.72rem;

  /* ритм */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4.5rem;
  --s-9: clamp(4.5rem, 2.5rem + 6vw, 8.5rem);

  /* форма */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 34px;
  --sh-panel: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 40px 80px -44px rgba(0, 0, 0, 0.85);
  --sh-float: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 30px 70px -20px rgba(0, 0, 0, 0.9);

  /* движение */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --d-fast: 160ms;
  --d-mid: 320ms;
  --d-slow: 720ms;

  /* сетка */
  --gutter: clamp(1rem, 0.4rem + 3vw, 2.5rem);
  --page: min(1240px, 100% - 2 * var(--gutter));
  --head-h: 4.25rem;

  color-scheme: dark;
}

/* ---------- База ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 1rem);
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--f-body);
  font-size: var(--t-body);
  line-height: 1.55;
  font-weight: 450;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

[hidden] { display: none !important; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-underline-offset: 0.2em; }
button { font: inherit; color: inherit; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-family: var(--f-display); font-weight: 600; letter-spacing: -0.035em; line-height: 1.06; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }

::selection { background: rgba(200, 255, 46, 0.32); color: #fff; }

:focus-visible {
  outline: 2px solid var(--c-signal);
  outline-offset: 3px;
  border-radius: 4px;
}

.chalk :focus-visible { outline-color: var(--c-chalk-text); }

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip {
  position: absolute;
  left: 1rem; top: -4rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  border-radius: var(--r-sm);
  background: var(--c-signal);
  color: var(--c-on-signal);
  font-weight: 700;
  text-decoration: none;
}
.skip:focus { top: 1rem; }

.page { width: var(--page); margin-inline: auto; }

/* маркер: фирменный приём — лайм как выделитель в журнале */
mark {
  color: var(--c-on-signal);
  background: linear-gradient(transparent 8%, var(--c-signal) 8%, var(--c-signal) 92%, transparent 92%);
  padding: 0 0.12em;
  margin: 0 -0.04em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* ---------- Кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.9rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--c-line-2);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--c-text);
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--d-fast) var(--ease), border-color var(--d-fast) var(--ease), transform var(--d-fast) var(--ease), color var(--d-fast) var(--ease);
}
.btn:hover { border-color: rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.06); }
.btn:active { transform: translateY(1px); }

.btn-signal {
  background: var(--c-signal);
  border-color: var(--c-signal);
  color: var(--c-on-signal);
  font-weight: 700;
}
.btn-signal:hover { background: #d6ff5c; border-color: #d6ff5c; }

.btn-ghost { background: transparent; }
.btn-sm { min-height: 2.4rem; padding: 0.4rem 0.95rem; font-size: 0.9rem; }
.btn-lg { min-height: 3.35rem; padding: 0.8rem 1.5rem; font-size: 1.02rem; border-radius: 12px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 2.9rem;
  height: 2.9rem;
  border: 1px solid var(--c-line-2);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: background var(--d-fast) var(--ease), border-color var(--d-fast) var(--ease);
}
.icon-btn:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.3); }
.icon-btn:disabled { opacity: 0.35; cursor: default; }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- Мелкие элементы ---------- */

.label {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.label-warn { color: var(--c-warn); }

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--c-line-2);
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--c-text-2);
  white-space: nowrap;
}
.chip-signal { border-color: var(--c-signal-line); color: var(--c-signal); background: var(--c-signal-soft); }

.demo-tag {
  margin-top: 0.7rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

.fine { color: var(--c-muted); font-size: var(--t-small); }

.side-note { color: var(--c-muted); font-size: var(--t-small); line-height: 1.5; }

.seg {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--c-line-2);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.25);
}
.seg button {
  min-height: 2.25rem;
  padding: 0.3rem 0.85rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--c-muted);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--d-fast) var(--ease), color var(--d-fast) var(--ease);
}
.seg button:hover { color: var(--c-text); }
.seg button[aria-pressed="true"] { background: var(--c-signal); color: var(--c-on-signal); }

/* ---------- Шапка ---------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background var(--d-mid) var(--ease), border-color var(--d-mid) var(--ease);
}
.site-head.is-stuck {
  background: rgba(11, 12, 14, 0.86);
  border-bottom-color: var(--c-line);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
}

.site-head-in {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: var(--head-h);
}

.brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--c-signal-line);
  border-radius: 10px;
  background: var(--c-signal-soft);
  color: var(--c-signal);
}
.brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
.brand-copy b { font-family: var(--f-display); font-size: 1.02rem; font-weight: 600; letter-spacing: -0.02em; }
.brand-copy small { margin-top: 2px; font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--c-muted); }

.site-nav { margin-left: auto; display: flex; align-items: center; gap: 1.5rem; }
.site-nav ul { display: flex; gap: 0.25rem; }
.site-nav ul a {
  display: inline-flex;
  align-items: center;
  min-height: 2.6rem;
  padding: 0 0.7rem;
  border-radius: 8px;
  color: var(--c-text-2);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--d-fast) var(--ease), background var(--d-fast) var(--ease);
}
.site-nav ul a:hover { color: var(--c-text); background: rgba(255, 255, 255, 0.05); }
.site-nav ul a.is-current { color: var(--c-text); }
.site-nav-cta { display: none; }
.head-login { display: none; }

.menu-btn {
  display: none;
  position: relative;
  width: 2.9rem;
  height: 2.9rem;
  margin-left: auto;
  border: 1px solid var(--c-line-2);
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}
.menu-btn-bars,
.menu-btn-bars::before,
.menu-btn-bars::after {
  position: absolute;
  left: 50%;
  width: 1.1rem;
  height: 2px;
  margin-left: -0.55rem;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--d-mid) var(--ease), opacity var(--d-fast) var(--ease);
}
.menu-btn-bars { top: 50%; margin-top: -1px; }
.menu-btn-bars::before, .menu-btn-bars::after { content: ""; left: 0; margin-left: 0; }
.menu-btn-bars::before { top: -6px; }
.menu-btn-bars::after { top: 6px; }
.menu-btn[aria-expanded="true"] .menu-btn-bars { background: transparent; }
.menu-btn[aria-expanded="true"] .menu-btn-bars::before { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn-bars::after { transform: translateY(-6px) rotate(-45deg); }

@media (min-width: 1081px) {
  .site-nav-cta { display: inline-flex; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(2.5rem, 1rem + 5vw, 5.5rem) 0 0;
  background:
    linear-gradient(var(--c-line) 1px, transparent 1px) 0 0 / 100% 3.5rem;
  background-position: 0 -1px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, var(--c-bg) 0%, rgba(11, 12, 14, 0.55) 30%, rgba(11, 12, 14, 0.7) 70%, var(--c-bg) 100%);
}
.hero > * { position: relative; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2.5rem, 1rem + 4vw, 4.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--s-5);
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-2);
}
.dot { width: 0.5rem; height: 0.5rem; border-radius: 2px; background: var(--c-signal); }

.display {
  font-size: var(--t-display);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.02;
  max-width: 15ch;
}

.lead {
  margin-top: var(--s-5);
  max-width: 36rem;
  font-size: var(--t-lead);
  color: var(--c-text-2);
  line-height: 1.55;
}

.hero-copy .actions { margin-top: var(--s-6); }
.hero-copy .fine { margin-top: var(--s-4); max-width: 34rem; }

/* окно браузера */
.window {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--c-line-2);
  border-radius: var(--r-md);
  background: var(--c-surface);
  box-shadow: var(--sh-panel);
}
.window-bar {
  display: flex;
  align-items: center;
  height: 2.2rem;
  padding: 0 0.85rem;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-bg-2);
}
.window-bar::before {
  content: "";
  width: 2.6rem;
  height: 0.5rem;
  margin-right: 0.85rem;
  border-radius: 99px;
  background:
    radial-gradient(circle at 0.25rem 50%, #3a3f45 0.25rem, transparent 0.27rem),
    radial-gradient(circle at 1.3rem 50%, #3a3f45 0.25rem, transparent 0.27rem),
    radial-gradient(circle at 2.35rem 50%, #3a3f45 0.25rem, transparent 0.27rem);
}
.window-url { font-family: var(--f-mono); font-size: 0.7rem; color: var(--c-muted); letter-spacing: 0.04em; }
.window img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: top; background: #050607; }

.hero-stage { position: relative; }
.hero-window { width: 100%; }

/* телефон с живым занятием */
.phone {
  width: min(20.5rem, 100%);
}
.phone-screen {
  padding: 1.05rem 1rem 1rem;
  border: 1px solid var(--c-line-2);
  border-radius: var(--r-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 6rem),
    #0e1013;
  box-shadow: var(--sh-float), 0 0 0 6px #050607, 0 0 0 7px var(--c-line-2);
}
.ph-top { display: flex; justify-content: space-between; align-items: center; }
.ph-kicker { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--c-signal); }
.ph-clock { font-family: var(--f-mono); font-size: 0.72rem; color: var(--c-muted); }
.ph-title { margin-top: 0.7rem; font-family: var(--f-display); font-weight: 600; font-size: 1.15rem; letter-spacing: -0.03em; }
.ph-meta { margin-top: 0.2rem; font-family: var(--f-mono); font-size: 0.68rem; color: var(--c-muted); }
.ph-hint {
  margin-top: 0.75rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--c-signal-line);
  border-radius: var(--r-sm);
  background: var(--c-signal-soft);
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--c-text-2);
}
.ph-hint b { color: var(--c-signal); }

.ph-sets { margin-top: 0.75rem; display: grid; gap: 0.35rem; }
.ph-sets li {
  display: grid;
  grid-template-columns: 1.4rem 1fr 3rem 1.3rem;
  align-items: center;
  min-height: 2.35rem;
  padding: 0 0.6rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  background: var(--c-surface);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--c-text-2);
  transition: border-color var(--d-mid) var(--ease), background var(--d-mid) var(--ease), color var(--d-mid) var(--ease);
}
.ph-sets li span:first-child { color: var(--c-muted); }
.ph-sets li i {
  justify-self: end;
  width: 1.05rem;
  height: 1.05rem;
  border: 1.5px solid var(--c-line-2);
  border-radius: 5px;
  transition: background var(--d-mid) var(--ease), border-color var(--d-mid) var(--ease);
}
.ph-sets li.is-done { color: var(--c-text); }
.ph-sets li.is-done i {
  border-color: var(--c-signal);
  background: var(--c-signal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-7' fill='none' stroke='%230b0c0e' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 80% no-repeat;
}
.ph-sets li.is-warm { opacity: 0.62; }
.ph-sets li.is-active { border-color: var(--c-signal-line); background: #151a10; color: var(--c-text); }

.ph-rest {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--r-sm);
  background: var(--c-surface-2);
}
.ph-ring { width: 2.2rem; height: 2.2rem; transform: rotate(-90deg); }
.ph-ring circle { fill: none; stroke: var(--c-surface-3); stroke-width: 3.2; }
.ph-ring .ph-ring-val {
  stroke: var(--c-signal);
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset 1s linear, stroke var(--d-mid) var(--ease);
}
.ph-rest-label { display: block; font-size: 0.7rem; color: var(--c-muted); }
.ph-rest-time { display: block; font-family: var(--f-mono); font-size: 1.05rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.ph-rest-goal { font-family: var(--f-mono); font-size: 0.68rem; color: var(--c-muted); }
.ph-rest.is-over .ph-ring-val { stroke: var(--c-up); }
.ph-rest.is-over .ph-rest-label { color: var(--c-up); }

.ph-btn {
  width: 100%;
  min-height: 2.9rem;
  margin-top: 0.65rem;
  border: 0;
  border-radius: var(--r-sm);
  background: var(--c-signal);
  color: var(--c-on-signal);
  font-weight: 700;
  cursor: pointer;
  transition: background var(--d-fast) var(--ease), transform var(--d-fast) var(--ease);
}
.ph-btn:hover { background: #d6ff5c; }
.ph-btn:active { transform: scale(0.985); }
.ph-btn:disabled { background: var(--c-surface-3); color: var(--c-muted); cursor: default; }

.hero-phone { margin: -5.5rem auto 0; position: relative; }
.hero-phone .demo-tag { text-align: center; }

/* оглавление продукта */
.toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(3rem, 2rem + 4vw, 5.5rem);
  border-top: 1px solid var(--c-line-2);
}
.toc li { border-bottom: 1px solid var(--c-line); }
.toc li:nth-child(odd) { border-right: 1px solid var(--c-line); }
.toc a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 0.4rem;
  padding: 1.05rem 0.9rem 1.1rem 0;
  text-decoration: none;
  transition: background var(--d-fast) var(--ease);
}
.toc li:nth-child(even) a { padding-left: 0.9rem; }
.toc a:hover { background: rgba(255, 255, 255, 0.025); }
.toc a:hover b { color: var(--c-signal); }
.toc-n { grid-row: 1 / span 2; font-family: var(--f-mono); font-size: 0.74rem; color: var(--c-muted); padding-top: 0.2rem; }
.toc b { font-family: var(--f-display); font-weight: 600; font-size: 1.02rem; letter-spacing: -0.02em; transition: color var(--d-fast) var(--ease); }
.toc a > span:last-child { color: var(--c-muted); font-size: 0.86rem; }

/* ---------- Секции ---------- */

.section { padding: var(--s-9) 0; }
.section-rule { border-top: 1px solid var(--c-line); }

.sec-head { max-width: 50rem; margin-bottom: clamp(2.25rem, 1.5rem + 2.5vw, 3.75rem); }
.sec-head h2 { font-size: var(--t-h2); }
.sec-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; max-width: none; }

.sec-index {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--s-5);
  font-family: var(--f-mono);
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-text-2);
}
.sec-index span {
  display: inline-grid;
  place-items: center;
  min-width: 2.1rem;
  height: 1.55rem;
  padding: 0 0.4rem;
  border-radius: 6px;
  background: var(--c-signal);
  color: var(--c-on-signal);
  letter-spacing: 0.04em;
  font-weight: 500;
}
.sec-index::after { content: ""; flex: 1; max-width: 8rem; height: 1px; background: var(--c-line-2); }

.sec-lead { margin-top: var(--s-5); max-width: 40rem; font-size: var(--t-lead); color: var(--c-text-2); }

/* панель — общий контейнер интерфейса */
.panel {
  margin: 0;
  padding: clamp(1rem, 0.7rem + 1vw, 1.5rem);
  border: 1px solid var(--c-line-2);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent 8rem),
    var(--c-surface);
  box-shadow: var(--sh-panel);
}
.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: var(--s-5);
}
.panel-note { margin-top: var(--s-5); padding-top: var(--s-4); border-top: 1px dashed var(--c-line-2); color: var(--c-muted); font-size: var(--t-small); }

/* ---------- 01 · Занятие ---------- */

.flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-5);
}

.flow-tabs { display: grid; gap: 0; border-top: 1px solid var(--c-line-2); }
.flow-tab {
  position: relative;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0.5rem;
  width: 100%;
  padding: 1.25rem 0.5rem 1.3rem 0;
  border: 0;
  border-bottom: 1px solid var(--c-line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  color: var(--c-muted);
  transition: color var(--d-mid) var(--ease);
}
.flow-tab::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: var(--c-signal);
  transition: width var(--d-slow) var(--ease);
}
.flow-tab:hover { color: var(--c-text-2); }
.flow-tab[aria-selected="true"] { color: var(--c-text); }
.flow-tab[aria-selected="true"]::before { width: 100%; }
.flow-n { font-family: var(--f-mono); font-size: 0.8rem; padding-top: 0.3rem; }
.flow-tab[aria-selected="true"] .flow-n { color: var(--c-signal); }
.flow-tab-copy b { display: block; font-family: var(--f-display); font-weight: 600; font-size: clamp(1.15rem, 1rem + 0.6vw, 1.5rem); letter-spacing: -0.03em; line-height: 1.15; }
.flow-tab-copy span { display: block; margin-top: 0.4rem; font-size: 0.95rem; line-height: 1.5; }

.flow-panel { animation: panel-in var(--d-mid) var(--ease); }
.flow-panel:focus-visible { outline-offset: 4px; border-radius: var(--r-lg); }

.plan-list { display: grid; }
.plan-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--c-line);
}
.plan-list li:first-child { padding-top: 0; }
.plan-list b { font-weight: 600; }
.plan-list span { grid-row: 2; font-family: var(--f-mono); font-size: 0.74rem; color: var(--c-muted); }
.plan-list em {
  grid-row: 1 / span 2;
  align-self: center;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-style: normal;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}
.g-chest { color: var(--g-chest); }
.g-back { color: var(--g-back); }
.g-legs { color: var(--g-legs); }
.g-delt { color: var(--g-delt); }
.g-arms { color: var(--g-arms); }

.live-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-5); }
.hint-box {
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--c-signal-line);
  border-radius: var(--r-sm);
  background: var(--c-signal-soft);
  color: var(--c-text-2);
  font-size: 0.92rem;
}
.hint-box b { color: var(--c-signal); }

.sets-table {
  width: 100%;
  margin-top: var(--s-4);
  border-collapse: collapse;
  font-family: var(--f-mono);
  font-size: 0.86rem;
  font-variant-numeric: tabular-nums;
}
.sets-table th {
  padding: 0 0 0.5rem;
  text-align: left;
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.sets-table td { padding: 0.6rem 0; border-top: 1px solid var(--c-line); }
.sets-table tr.is-warm td { color: var(--c-muted); }
.sets-table tr.is-next td { color: var(--c-signal); }

.plates { padding: 1rem; border-radius: var(--r-md); background: var(--c-bg-2); border: 1px solid var(--c-line); }
.bar-viz {
  position: relative;
  display: flex;
  align-items: center;
  height: 6.5rem;
  margin: 0.9rem 0 0.7rem;
}
.bar-sleeve { width: 1.3rem; height: 1.1rem; border-radius: 3px 0 0 3px; background: #6b7178; }
.bar-rod { flex: 1; height: 0.6rem; border-radius: 0 3px 3px 0; background: linear-gradient(180deg, #9aa0a6, #5d6268); }
.plate { display: block; margin-right: 3px; border-radius: 4px; }
.plate.p20 { width: 1.15rem; height: 6.2rem; background: linear-gradient(90deg, #2c6fd6, #4d8ff0); }
.plate.p1 { width: 0.55rem; height: 2.6rem; background: linear-gradient(90deg, #b9bdc2, #e6e8ea); }
.plates-calc { font-family: var(--f-mono); font-size: 0.8rem; color: var(--c-text-2); }

.done-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.6rem; }
.done-stats div { padding: 0.9rem; border-radius: var(--r-md); background: var(--c-bg-2); border: 1px solid var(--c-line); }
.done-stats dt { font-size: 0.78rem; color: var(--c-muted); }
.done-stats dd { margin-top: 0.15rem; font-family: var(--f-display); font-weight: 600; font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.3rem); letter-spacing: -0.04em; }
.done-stats dd small { font-size: 0.5em; color: var(--c-muted); letter-spacing: 0; }

.week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0.35rem; margin-top: var(--s-4); }
.week span {
  display: grid;
  justify-items: center;
  gap: 0.1rem;
  padding: 0.5rem 0;
  border-radius: var(--r-sm);
  background: var(--c-surface-2);
  font-family: var(--f-mono);
  font-size: 0.66rem;
  color: var(--c-muted);
}
.week b { font-size: 0.95rem; color: var(--c-text-2); font-weight: 500; }
.week .is-on { background: var(--c-signal); color: rgba(11, 12, 14, 0.7); }
.week .is-on b { color: var(--c-on-signal); }
.week .is-today { box-shadow: 0 0 0 2px var(--c-bg), 0 0 0 3px var(--c-signal); }

.flow-stage .demo-tag { text-align: right; }

/* ---------- 02 · Статистика ---------- */

.progress-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-5); }

.chart-value { margin-top: 0.35rem; font-family: var(--f-display); font-size: 1rem; color: var(--c-text-2); }
.chart-value b { font-size: clamp(2.2rem, 1.6rem + 2vw, 3.4rem); font-weight: 700; letter-spacing: -0.05em; color: var(--c-text); margin-right: 0.15rem; }
.delta-up {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: rgba(125, 255, 179, 0.12);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--c-up);
  vertical-align: middle;
}

.chart { width: 100%; height: clamp(12rem, 9rem + 10vw, 17rem); overflow: visible; }
.chart-grid line { stroke: var(--c-line); stroke-width: 1; stroke-dasharray: 3 5; vector-effect: non-scaling-stroke; }
.chart-grid text { fill: var(--c-muted); font-family: var(--f-mono); font-size: 11px; }
.chart-line {
  fill: none;
  stroke: var(--c-signal);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}
.chart-area { fill: rgba(200, 255, 46, 0.08); }
.chart-dot { fill: var(--c-surface); stroke: var(--c-signal); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart-dot.is-last { fill: var(--c-signal); }
.chart-cap { margin-top: var(--s-3); font-size: 0.82rem; color: var(--c-muted); }

.progress-side { display: grid; gap: var(--s-4); align-content: start; }

.plateau { border-color: rgba(255, 181, 71, 0.3); background: linear-gradient(180deg, rgba(255, 181, 71, 0.06), transparent 8rem), var(--c-surface); }
.plateau h3 { margin-top: 0.7rem; font-size: var(--t-h3); letter-spacing: -0.025em; }
.mono-meta { margin-top: 0.35rem; font-family: var(--f-mono); font-size: 0.74rem; color: var(--c-muted); }
.plateau p:last-child { margin-top: 0.7rem; color: var(--c-text-2); }

.kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--c-line-2); }
.kpis div { padding: 1rem 0 1.05rem; border-bottom: 1px solid var(--c-line); }
.kpis div:nth-child(odd) { padding-right: 1rem; border-right: 1px solid var(--c-line); }
.kpis div:nth-child(even) { padding-left: 1rem; }
.kpis dt { font-size: 0.82rem; color: var(--c-muted); }
.kpis dd { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.6rem, 1.2rem + 1.3vw, 2.3rem); letter-spacing: -0.045em; line-height: 1.15; }
.kpis dd small { font-size: 0.5em; color: var(--c-muted); letter-spacing: 0; }

/* ---------- 03 · Тело ---------- */

.body-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-5); }

.map {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 1;
  border-radius: var(--r-md);
  background-color: #000;
}
.map img { width: 100%; height: 100%; }
.tint {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: multiply;
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  opacity: 0;
  transition: opacity var(--d-slow) var(--ease), background-color var(--d-mid) var(--ease);
}
.m-chest { -webkit-mask-image: url(assets/muscles/chest.png); mask-image: url(assets/muscles/chest.png); }
.m-front-delt { -webkit-mask-image: url(assets/muscles/front-delt.png); mask-image: url(assets/muscles/front-delt.png); }
.m-side-delt { -webkit-mask-image: url(assets/muscles/side-delt.png); mask-image: url(assets/muscles/side-delt.png); }
.m-triceps { -webkit-mask-image: url(assets/muscles/triceps.png); mask-image: url(assets/muscles/triceps.png); }
.m-lats { -webkit-mask-image: url(assets/muscles/lats.png); mask-image: url(assets/muscles/lats.png); }
.m-mid-back { -webkit-mask-image: url(assets/muscles/mid-back.png); mask-image: url(assets/muscles/mid-back.png); }
.m-biceps { -webkit-mask-image: url(assets/muscles/biceps.png); mask-image: url(assets/muscles/biceps.png); }
.m-abs { -webkit-mask-image: url(assets/muscles/abs.png); mask-image: url(assets/muscles/abs.png); }
.m-quads { -webkit-mask-image: url(assets/muscles/quads.png); mask-image: url(assets/muscles/quads.png); }
.m-hamstrings { -webkit-mask-image: url(assets/muscles/hamstrings.png); mask-image: url(assets/muscles/hamstrings.png); }
.m-glutes { -webkit-mask-image: url(assets/muscles/glutes.png); mask-image: url(assets/muscles/glutes.png); }
.m-calves { -webkit-mask-image: url(assets/muscles/calves.png); mask-image: url(assets/muscles/calves.png); }

.map[data-map-view="recovery"] .tint[data-r] { opacity: 1; }
.map[data-map-view="recovery"] .tint[data-r="tired"] { background-color: var(--c-red); }
.map[data-map-view="recovery"] .tint[data-r="mid"] { background-color: var(--c-yellow); }
.map[data-map-view="recovery"] .tint[data-r="ready"] { background-color: var(--c-green); }
.map[data-map-view="recovery"] .tint[data-r="stale"] { background-color: var(--c-blue); opacity: 0.75; }
.map[data-map-view="load"] .tint[data-l] { opacity: 1; }
.map[data-map-view="load"] .tint[data-l="primary"] { background-color: var(--c-red); }
.map[data-map-view="load"] .tint[data-l="secondary"] { background-color: var(--c-yellow); }
.map[data-map-view="load"] .tint[data-l="assist"] { background-color: var(--c-blue); }

.legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin-top: var(--s-4); font-size: 0.82rem; color: var(--c-text-2); }
.legend span::before { content: ""; display: inline-block; width: 0.6rem; height: 0.6rem; margin-right: 0.45rem; border-radius: 2px; vertical-align: -0.02rem; }
.lg-red::before { background: var(--c-red); }
.lg-yellow::before { background: var(--c-yellow); }
.lg-green::before { background: var(--c-green); }
.lg-blue::before { background: var(--c-blue); }

.inbody { display: grid; gap: var(--s-5); align-content: start; }
.pairs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.6rem; }
.pair { padding: 0.85rem 0.75rem 0.8rem; border-radius: var(--r-md); background: var(--c-bg-2); border: 1px solid var(--c-line); text-align: center; }
.pair p { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-muted); }
.pair-bars { display: grid; grid-template-columns: 1fr 1fr; gap: 0.45rem; height: 8.5rem; margin: 0.7rem 0 0.55rem; align-items: end; }
.pair-bars span { position: relative; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; }
.pair-bars i {
  display: block;
  width: 100%;
  max-width: 2.3rem;
  margin: 0 auto;
  height: calc(var(--h, 0) * 100%);
  border-radius: 6px 6px 3px 3px;
  transition: height 900ms var(--ease);
}
.pb-old i { --h: var(--a); background: rgba(255, 255, 255, 0.16); }
.pb-new i { --h: var(--b); background: var(--c-up); transition-delay: 120ms; }
.pair-bars small { order: -1; margin-bottom: 0.3rem; font-family: var(--f-mono); font-size: 0.72rem; color: var(--c-text-2); }
.pair > b { font-family: var(--f-mono); font-weight: 500; font-size: 0.82rem; color: var(--c-up); }
.js [data-bars]:not(.is-in) .pair-bars i { height: 0; }

.advice { display: grid; border-top: 1px solid var(--c-line-2); }
.advice li { padding: 0.85rem 0; border-bottom: 1px solid var(--c-line); color: var(--c-text-2); }
.advice b { color: var(--c-text); font-weight: 700; }

/* ---------- 04 · Каталог (мел) ---------- */

.chalk {
  background: var(--c-chalk);
  color: var(--c-chalk-text);
  background-image: linear-gradient(var(--c-chalk-line) 1px, transparent 1px);
  background-size: 100% 3.5rem;
}
.chalk .sec-index { color: var(--c-chalk-muted); }
.chalk .sec-index::after { background: var(--c-chalk-line); }
.chalk .sec-index span { background: var(--c-chalk-text); color: var(--c-signal); }
.chalk .label { color: var(--c-chalk-muted); }
.chalk .sec-head { max-width: 62rem; }
.big-num {
  display: inline-block;
  padding: 0 0.12em;
  margin-right: 0.1em;
  background: var(--c-signal);
  border-radius: 0.1em;
  font-weight: 700;
}

.catalog-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-6);
}

.ex-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.ex { margin: 0; overflow: hidden; border-radius: var(--r-lg); background: #fff; border: 1px solid var(--c-chalk-line); }
.ex img { width: 100%; aspect-ratio: 1; object-fit: contain; transition: transform var(--d-slow) var(--ease); }
.ex:hover img { transform: scale(1.04); }
.ex figcaption { padding: 0.8rem 1rem 1rem; border-top: 1px solid var(--c-chalk-line); }
.ex b { display: block; font-weight: 700; font-size: 0.98rem; line-height: 1.25; }
.ex span { display: block; margin-top: 0.2rem; font-family: var(--f-mono); font-size: 0.7rem; color: var(--c-chalk-muted); }

.groups ul { margin-top: var(--s-3); border-top: 1px solid var(--c-chalk-text); }
.groups li { display: flex; justify-content: space-between; align-items: baseline; padding: 0.62rem 0; border-bottom: 1px solid var(--c-chalk-line); }
.groups li span { font-weight: 600; }
.groups li b { font-family: var(--f-mono); font-weight: 500; font-variant-numeric: tabular-nums; }
.groups-note { margin-top: var(--s-4); color: var(--c-chalk-muted); font-size: var(--t-small); }

.programs ol { margin-top: var(--s-3); display: grid; gap: 0.6rem; counter-reset: prg; }
.programs li {
  position: relative;
  padding: 1rem 1.1rem 1.05rem;
  border-radius: var(--r-md);
  background: var(--c-chalk-text);
  color: var(--c-text);
}
.programs li:first-child { box-shadow: inset 0 0 0 1px var(--c-signal); }
.programs li span { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-signal); }
.programs li b { display: block; margin-top: 0.3rem; font-family: var(--f-display); font-weight: 600; font-size: 1.12rem; letter-spacing: -0.025em; }
.programs li p { margin-top: 0.3rem; font-size: 0.9rem; color: var(--c-text-2); }

/* ---------- 05 · Экраны ---------- */

.gallery {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(88vw, 52rem);
  gap: clamp(0.9rem, 0.5rem + 1.5vw, 1.75rem);
  padding: 0.5rem max(var(--gutter), (100% - 1240px) / 2) 1.5rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: max(var(--gutter), (100% - 1240px) / 2);
  scrollbar-width: thin;
  scrollbar-color: var(--c-surface-3) transparent;
}
.gallery:focus-visible { outline-offset: -2px; border-radius: 0; }
.gallery li { scroll-snap-align: start; min-width: 0; }
.gallery p { margin-top: var(--s-4); max-width: 40rem; color: var(--c-muted); font-size: 0.95rem; }
.gallery p b { color: var(--c-text); }
.gallery-ctrl { display: flex; gap: 0.5rem; flex: none; }

/* ---------- 06 · Кабинет и вопросы ---------- */

.access-grid, .faq-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-5); }
.access-grid .sec-head, .faq-grid .sec-head { margin-bottom: 0; }

.facts { display: grid; border-top: 1px solid var(--c-line-2); }
.facts li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.3rem;
  padding: 1.15rem 0 1.2rem;
  border-bottom: 1px solid var(--c-line);
}
.facts b { font-family: var(--f-display); font-weight: 600; font-size: 1.08rem; letter-spacing: -0.025em; }
.facts span { color: var(--c-text-2); }

.faq { border-top: 1px solid var(--c-line-2); }
.faq details { border-bottom: 1px solid var(--c-line); }
.faq summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 4rem;
  padding: 1rem 3rem 1rem 0;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(1.02rem, 0.95rem + 0.3vw, 1.2rem);
  letter-spacing: -0.025em;
  cursor: pointer;
  list-style: none;
  transition: color var(--d-fast) var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--c-signal); }
.faq summary::after {
  content: "";
  position: absolute;
  right: 0.35rem;
  top: 50%;
  width: 0.85rem;
  height: 0.85rem;
  margin-top: -0.43rem;
  background:
    linear-gradient(currentColor, currentColor) center / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) center / 2px 100% no-repeat;
  transition: transform var(--d-mid) var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 3rem 1.3rem 0; max-width: 44rem; color: var(--c-text-2); }

/* ---------- CTA ---------- */

.cta { padding: var(--s-9) 0; border-top: 1px solid var(--c-line); background: linear-gradient(var(--c-line) 1px, transparent 1px) 0 0 / 100% 3.5rem; }
.cta-in { max-width: 62rem; }
.display-2 { font-size: var(--t-display-2); font-weight: 700; letter-spacing: -0.05em; line-height: 1.04; }
.cta .actions { margin-top: var(--s-6); }
.cta .fine { margin-top: var(--s-4); }

/* ---------- Подвал ---------- */

.site-foot { border-top: 1px solid var(--c-line-2); padding: var(--s-7) 0 calc(var(--s-7) + env(safe-area-inset-bottom)); }
.foot-in { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s-6); }
.foot-brand p { margin-top: var(--s-3); color: var(--c-muted); font-size: var(--t-small); }
.foot-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-5); }
.foot-nav ul { display: grid; align-content: start; gap: 0.2rem; }
.foot-nav a { display: inline-flex; align-items: center; min-height: 2.4rem; color: var(--c-text-2); text-decoration: none; }
.foot-nav a:hover { color: var(--c-text); text-decoration: underline; }
.foot-copy { color: var(--c-muted); font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.04em; }

/* ---------- Появление ---------- */

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--d-slow) var(--ease), transform var(--d-slow) var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

@keyframes panel-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ==========================================================================
   Адаптив
   ========================================================================== */

@media (min-width: 640px) {
  .toc { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .toc li:nth-child(odd) { border-right: 0; }
  .toc li:not(:nth-child(3n)) { border-right: 1px solid var(--c-line); }
  .toc li a, .toc li:nth-child(even) a { padding-left: 0.9rem; }
  .toc li:nth-child(3n + 1) a { padding-left: 0; }
  .live-grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); align-items: start; }
  .foot-in { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  .foot-copy { grid-column: 1 / -1; }
}

@media (min-width: 900px) {
  .hero-stage { padding-left: 4rem; }
  .hero-phone { position: absolute; left: 0; bottom: -2.5rem; margin: 0; }
  .hero-stage { padding-bottom: 4rem; }

  .flow { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 1rem + 3vw, 4.5rem); align-items: start; }
  .flow-stage { position: sticky; top: calc(var(--head-h) + 1.5rem); }

  .progress-grid { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); align-items: start; }
  .body-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }

  .catalog-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ex-row { grid-column: 1 / -1; }

  .access-grid, .faq-grid { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(2rem, 1rem + 4vw, 6rem); align-items: start; }
  .facts li { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 1.5rem; }

  .foot-in { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); }
}

@media (min-width: 1100px) {
  .hero-grid { grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr); align-items: center; }
  .hero .display { font-size: clamp(3.6rem, 0.4rem + 4vw, 5.6rem); }
  .hero-stage { padding-left: 0; padding-bottom: 0; }
  .hero-window { width: calc(100% + max(0px, (100vw - 1240px) / 2) - 1rem); max-width: none; }
  .hero-phone { left: -3.5rem; bottom: -3.5rem; }
  .toc { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .toc li:not(:nth-child(3n)) { border-right: 0; }
  .toc li:not(:last-child) { border-right: 1px solid var(--c-line); }
  .toc li a { padding-left: 0.9rem; }
  .toc li:first-child a { padding-left: 0; }
  .toc a { grid-template-columns: minmax(0, 1fr); }
  .toc-n { grid-row: auto; padding: 0 0 0.6rem; }

  .catalog-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr) minmax(0, 1fr); align-items: start; }
  .ex-row { grid-column: auto; grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1100px) and (max-width: 1399px) {
  .catalog-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ex-row { grid-column: 1 / -1; }
}

@media (min-width: 1600px) {
  :root { --page: min(1360px, 100% - 2 * var(--gutter)); }
  .gallery { padding-inline: calc((100% - 1360px) / 2); scroll-padding-inline: calc((100% - 1360px) / 2); grid-auto-columns: 56rem; }
  .hero-window { width: calc(100% + (100vw - 1360px) / 2 - 1rem); }
}

/* мобильная навигация */
@media (max-width: 1080px) {
  .menu-btn { display: block; }
  .head-login { display: inline-flex; margin-left: auto; }
  .menu-btn { margin-left: 0; }
  .site-nav {
    position: fixed;
    inset: var(--head-h) 0 auto 0;
    z-index: 49;
    display: grid;
    gap: var(--s-5);
    margin: 0;
    padding: var(--s-4) var(--gutter) calc(var(--s-6) + env(safe-area-inset-bottom));
    max-height: calc(100dvh - var(--head-h));
    overflow-y: auto;
    border-bottom: 1px solid var(--c-line-2);
    background: rgba(11, 12, 14, 0.98);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity var(--d-mid) var(--ease), transform var(--d-mid) var(--ease), visibility 0s linear var(--d-mid);
  }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
  .site-nav ul { display: grid; gap: 0; }
  .site-nav ul a {
    width: 100%;
    min-height: 3.4rem;
    padding: 0;
    border-bottom: 1px solid var(--c-line);
    border-radius: 0;
    font-family: var(--f-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--c-text);
  }
  .site-nav ul a:hover { background: transparent; color: var(--c-signal); }
  .site-nav-cta { display: inline-flex; width: 100%; min-height: 3.3rem; }
  .site-head.is-menu { background: rgba(11, 12, 14, 0.98); border-bottom-color: var(--c-line); }
}

@media (max-width: 899px) {
  .hero-window { border-radius: var(--r-sm); }
  .window-bar { height: 1.8rem; }
  .sec-head-row { align-items: flex-start; flex-direction: column; }
  .gallery-ctrl { display: none; }
}

@media (max-width: 520px) {
  :root { --head-h: 3.9rem; }
  .brand-copy small { display: none; }
  .actions .btn { width: 100%; }
  .hero-phone { width: 100%; max-width: 20.5rem; margin-top: -3.5rem; }
  .pairs { gap: 0.4rem; }
  .pair { padding: 0.7rem 0.4rem; }
  .pair-bars { height: 7rem; }
  .ex-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ex-row .ex:last-child { display: none; }
  .done-stats div { padding: 0.75rem 0.6rem; }
  .seg button { padding: 0.3rem 0.65rem; font-size: 0.78rem; }
  .faq summary { padding-right: 2.25rem; }
  .faq details p { padding-right: 0; }
}

@media (max-width: 360px) {
  .head-login { display: none; }
  .menu-btn { margin-left: auto; }
  .toc { grid-template-columns: minmax(0, 1fr); }
  .toc li:nth-child(odd) { border-right: 0; }
  .toc li:nth-child(even) a { padding-left: 0; }
}

/* ---------- Доступность движения ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}