/* «Открытая вкладка»: тема. Описание решений в DESIGN.md */
:root {
  --bg: oklch(0.975 0.014 70);
  --surface: oklch(0.99 0.008 70);
  --surface-2: oklch(0.94 0.022 65);
  --ink: oklch(0.25 0.05 350);
  --ink-soft: oklch(0.46 0.04 350);
  --line: oklch(0.88 0.02 60);
  --ember: oklch(0.7 0.18 48);
  --ember-deep: oklch(0.56 0.17 42);
  --flame: oklch(0.62 0.21 33);
  --plum: oklch(0.32 0.1 350);
  --sun: oklch(0.88 0.13 85);
  --cream-on-plum: oklch(0.97 0.02 70);

  --accent: var(--ember);
  --accent-ink: var(--plum);
  --focus: var(--plum);

  --offer-bg: var(--surface);
  --offer-ink: var(--ink);
  --offer-line: var(--line);

  --radius-s: 999px;
  --radius-m: 28px;
  --radius-l: 40px;

  --font-display: "Commissioner", system-ui, sans-serif;
  --font-body: "Commissioner", system-ui, sans-serif;
  --font-mono: "Commissioner", system-ui, sans-serif;
}
h1, h2 { font-weight: 800; font-variation-settings: "FLAR" 100; letter-spacing: -0.025em; }
body { font-variation-settings: "FLAR" 0; }

/* ---------- Шапка ---------- */
.site-header { position: absolute; inset: 0 0 auto 0; z-index: var(--z-header); color: var(--cream-on-plum); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 76px; }
.page-plain .site-header { position: static; color: var(--ink); border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; font-weight: 800; font-size: 1.125rem; font-variation-settings: "FLAR" 100; }
.brand svg { width: 32px; height: 32px; }
.nav { display: flex; gap: 1.5rem; align-items: center; font-size: 0.9375rem; }
.nav a:not([class*="btn"]) { text-decoration: none; opacity: 0.85; transition: opacity var(--dur-fast) var(--ease-out); }
.nav a:not([class*="btn"]):hover { opacity: 1; }
@media (max-width: 720px) { .nav a:not([class*="btn"]) { display: none; } }

/* ---------- Кнопки ---------- */
.btn-sun, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  min-height: 52px; padding: 0 1.6rem; border-radius: 999px;
  font-weight: 600; text-decoration: none; white-space: nowrap; border: 1.5px solid transparent;
  transition: transform var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
.btn-sun { background: var(--plum); color: var(--cream-on-plum); box-shadow: 0 10px 24px -14px oklch(0.25 0.1 350 / 0.8); }
.btn-sun:hover { transform: translateY(-1px); box-shadow: 0 14px 28px -14px oklch(0.25 0.1 350 / 0.9); }
.btn-sun:active, .btn-ghost:active { transform: scale(0.98); }
.btn-ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn-ghost:hover { background: color-mix(in oklch, currentColor 10%, transparent); }
.btn-small { min-height: 42px; padding: 0 1.15rem; font-size: 0.9375rem; }
.btn-sun[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
.btn-sun svg, .btn-ghost svg { width: 18px; height: 18px; }
.btn-meta { font-weight: 400; font-size: 0.8125rem; opacity: 0.8; }
.on-cream .btn-sun { background: var(--ember-deep); color: var(--cream-on-plum); }

/* ---------- Герой ---------- */
.hero {
  position: relative; isolation: isolate; overflow: clip;
  min-height: min(100dvh, 860px);
  display: grid; align-items: end;
  color: var(--cream-on-plum);
  background: var(--flame);
  padding-block: 8rem clamp(3rem, 7vw, 6rem);
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero .wrap { display: grid; gap: 2rem; grid-template-columns: minmax(0, 1fr); align-items: end; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); } }
.hero h1 { font-size: clamp(2.5rem, 6.2vw, 5.25rem); line-height: 0.98; max-width: 13ch; }
.hero .lead { margin-top: 1.5rem; font-size: clamp(1.0625rem, 1.6vw, 1.3125rem); max-width: 44ch; line-height: 1.55; }
.hero .cta { margin-top: 2.2rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero .fineprint { margin-top: 1rem; font-size: 0.875rem; opacity: 0.88; max-width: 48ch; }
.hero-aside { color: var(--plum); font-weight: 500; font-size: 0.9375rem; line-height: 1.5; border-top: 1.5px solid var(--plum); padding-top: 1rem; max-width: 34ch; justify-self: end; }
@media (max-width: 959px) {
  .hero { min-height: auto; padding-top: 7rem; }
  .hero-aside { justify-self: start; color: var(--cream-on-plum); border-top-color: color-mix(in oklch, var(--cream-on-plum) 45%, transparent); font-weight: 400; }
}
.hero :focus-visible { outline-color: var(--cream-on-plum); }
.hero .btn-sun { background: var(--cream-on-plum); color: var(--plum); box-shadow: 0 12px 28px -14px oklch(0.2 0.1 350 / 0.9); }

/* ---------- Секции ---------- */
.section { padding-block: clamp(4rem, 10vw, 8rem); }
.section h2 { font-size: clamp(2rem, 4.4vw, 3.5rem); line-height: 1.02; max-width: 18ch; }
.section-lead { margin-top: 1rem; color: var(--ink-soft); max-width: 58ch; font-size: 1.0625rem; }

.zig { display: grid; gap: clamp(2rem, 5vw, 5rem); grid-template-columns: minmax(0, 1fr); align-items: center; padding-block: clamp(2.5rem, 6vw, 4.5rem); border-top: 1px solid var(--line); }
@media (min-width: 900px) {
  .zig { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
  .zig:nth-of-type(even) > :first-child { order: 2; }
}
.zig h3 { font-size: clamp(1.5rem, 2.6vw, 2.125rem); font-weight: 800; font-variation-settings: "FLAR" 100; line-height: 1.1; }
.zig p { margin-top: 0.9rem; color: var(--ink-soft); max-width: 50ch; }
.zig .num { font-size: 0.875rem; font-weight: 600; color: var(--ember-deep); margin-bottom: 0.75rem; display: block; }

.illo { border-radius: var(--radius-m); background: var(--surface-2); padding: clamp(1.25rem, 3vw, 2rem); min-height: 260px; display: grid; place-items: center; overflow: hidden; }

/* Счётчик трекеров */
.tracker-meter { width: 100%; max-width: 380px; }
.tracker-meter .big { font-size: clamp(3.5rem, 8vw, 5.5rem); font-weight: 800; font-variation-settings: "FLAR" 100; line-height: 1; color: var(--plum); font-variant-numeric: tabular-nums; }
.tracker-meter .cap { margin-top: 0.4rem; color: var(--ink-soft); font-size: 0.9375rem; }
.tracker-rows { margin: 1.25rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.5rem; }
.tracker-rows li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; font-size: 0.875rem; padding: 0.55rem 0.9rem; background: var(--surface); border-radius: 999px; }
.tracker-rows b { font-weight: 600; font-variant-numeric: tabular-nums; }

/* Вкладки-контейнеры */
.tabs-illo { width: 100%; max-width: 420px; display: grid; gap: 0.55rem; }
.tabs-illo .tab { display: flex; align-items: center; gap: 0.7rem; padding: 0.7rem 1rem; border-radius: 16px; background: var(--surface); font-size: 0.9375rem; transform: translateX(var(--x, 0)); transition: transform 700ms var(--ease-out); transition-delay: calc(var(--i) * 80ms); }
.tabs-illo .tab i { width: 10px; height: 28px; border-radius: 5px; background: var(--c); flex: none; }
.tabs-illo .tab small { margin-left: auto; color: var(--ink-soft); font-size: 0.75rem; }
.is-in .tabs-illo .tab { --x: 0 !important; }

/* Перенос из других браузеров */
.import-illo { position: relative; width: 100%; max-width: 420px; aspect-ratio: 4 / 3; }
.import-illo svg { width: 100%; height: 100%; }
.import-illo .flow-path { stroke-dasharray: 6 8; animation: dash 1.6s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -28; } }

/* Кто мы */
.why { background: var(--plum); color: var(--cream-on-plum); border-radius: var(--radius-l); padding: clamp(2rem, 6vw, 4.5rem); display: grid; gap: 2rem; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .why { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.why h2 { color: var(--cream-on-plum); }
.why ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 1rem; }
.why li { padding-bottom: 1rem; border-bottom: 1px solid color-mix(in oklch, var(--cream-on-plum) 25%, transparent); }
.why li strong { display: block; font-weight: 600; }
.why li span { opacity: 0.82; font-size: 0.9375rem; }
.why a { color: var(--sun); }
.why :focus-visible { outline-color: var(--sun); }

/* FAQ */
.faq { margin-top: 2rem; max-width: 820px; border-top: 1.5px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 1.2rem 3rem 1.2rem 0; position: relative; font-weight: 600; font-size: 1.0625rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 0; top: 50%; width: 28px; height: 28px; margin-top: -14px; border-radius: 50%; background: var(--surface-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23542040' stroke-width='2.4'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 14px no-repeat; transition: transform var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out); }
.faq details[open] summary::after { transform: rotate(45deg); background-color: var(--sun); }
.faq .answer { padding: 0 0 1.3rem; color: var(--ink-soft); max-width: 68ch; }

/* Подвал */
.site-footer { border-top: 1px solid var(--line); padding-block: 2.5rem 3rem; font-size: 0.875rem; }
.site-footer .wrap { display: grid; gap: 1.5rem; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 760px) { .site-footer .wrap { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); } }
.site-footer nav { display: flex; flex-direction: column; gap: 0.4rem; }
.site-footer nav a { color: var(--ink-soft); }

/* Загрузка */
.dl-panel { margin-top: 2rem; background: var(--surface-2); border-radius: var(--radius-m); padding: 0.5rem 1.5rem; }
.dl-panel .file-facts { margin: 0; border-top: 0; }
.dl-panel .file-facts > :nth-last-child(-n + 2) { border-bottom: 0; }
.dl-aside { background: var(--surface-2); border-radius: var(--radius-m); padding: clamp(1.25rem, 3vw, 1.75rem); }
.dl-aside h2 { font-size: 1.25rem; }
.dl-aside p { margin-top: 0.75rem; color: var(--ink-soft); font-size: 0.9375rem; }
.ya-search { margin-top: 1rem; display: flex; gap: 0.5rem; }
.ya-search input { flex: 1; min-width: 0; min-height: 46px; border-radius: 999px; border: 1.5px solid var(--line); padding: 0 1rem; background: var(--surface); }
.ya-search input:focus-visible { border-color: var(--plum); }

.section h2 + .zig { margin-top: clamp(2rem, 4vw, 3rem); }

@media (max-width: 480px) {
  .hero .cta > *, .dl-actions > [data-download-main] { width: 100%; }
}