/* ============================================================
   ЛЕНДИНГ КУРСА · PRODUCT DISCOVERY
   Бэспоук-стили продающей страницы. Строятся НА токенах проекта
   (tokens.css) и фундаменте (base.css) — собственные классы .pd-*,
   канонические компоненты не переопределяются (правило №17).
   Направление: «сигнал из шума» — тёмный editorial-продуктовый стиль,
   mono-метки, острые углы, discovery-градиент (orange→red→purple),
   сквозной мотив Customer Journey и двойного алмаза.
   ============================================================ */

.pd {
  /* — Локальные токены лендинга (производные от канона) — */
  --pd-accent: var(--orange);
  --pd-accent-2: var(--blue);
  --pd-accent-3: var(--purple);
  /* Затемнённый акцент для МЕЛКОГО текста-меток на СВЕТЛЫХ секциях:
     чистый --orange (#ea580c) на белом даёт ~3.4:1 и не проходит WCAG AA (4.5:1).
     Затемнение поднимает контраст до ~5:1. На тёмных сценах метки берут яркий
     --pd-accent (см. переопределения для .pd-problem/.pd-authority/.pd-final). */
  --pd-label: color-mix(in srgb, var(--orange) 75%, #000);
  --pd-grad: linear-gradient(100deg, var(--orange), var(--red) 55%, var(--purple));
  --pd-ink: #0a0a0b;          /* фирменная «чёрная» сцена hero/драм-блоков в любой теме */
  --pd-ink-2: #131316;
  --pd-on-ink: #f5f4f2;
  --pd-on-ink-dim: #a9a7a3;
  --pd-line-ink: color-mix(in srgb, #fff 12%, transparent);
  --pd-maxw: 1180px;          /* = --content-width */
  --pd-gut: clamp(1.1rem, 4vw, 2.5rem);
  --pd-section-y: clamp(4rem, 9vw, 8rem);

  font-family: var(--font-sans);
  overflow-x: clip;
}
/* В тёмной теме светлые секции становятся тёмными — метки берут яркий оранжевый. */
.dark .pd { --pd-label: var(--orange); }

/* — Контейнер — */
.pd-wrap { width: 100%; max-width: var(--pd-maxw); margin-inline: auto; padding-inline: var(--pd-gut); }
.pd-wrap--narrow { max-width: 880px; }

/* — Секция и её надзаголовок — */
.pd-section { padding-block: var(--pd-section-y); position: relative; }
.pd-kicker {
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--font-mono); font-size: .74rem; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase; color: var(--pd-label);
  margin: 0 0 1.1rem;
}
.pd-kicker::before { content: ""; width: 1.6rem; height: 2px; background: var(--pd-label); display: inline-block; }
/* На тёмных сценах метки и их черта — яркий оранжевый (контраст на near-black). */
.pd-problem .pd-kicker, .pd-authority .pd-kicker, .pd-final .pd-kicker { color: var(--pd-accent); }
.pd-problem .pd-kicker::before, .pd-authority .pd-kicker::before, .pd-final .pd-kicker::before { background: var(--pd-accent); }
.pd-kicker--center { justify-content: center; }
.pd-h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2rem, 1.3rem + 3.2vw, 3.6rem); line-height: 1.04;
  letter-spacing: -.03em; margin: 0 0 1rem; text-wrap: balance;
}
.pd-lead { font-size: clamp(1.05rem, 1rem + .5vw, 1.3rem); line-height: 1.55; color: hsl(var(--muted-fg)); max-width: 58ch; }
.pd-section__head { margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.pd-section__head--center { text-align: center; }
.pd-section__head--center .pd-lead { margin-inline: auto; }
.pd-em { background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ============================================================
   ШАПКА-CTA лендинга (sticky, поверх глобальной шапки сайта прокручивается)
   ============================================================ */
.pd-bar {
  position: sticky; top: 0; z-index: var(--z-header, 50);
  background: color-mix(in srgb, var(--pd-ink) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--pd-line-ink);
  color: var(--pd-on-ink);
}
.pd-bar__in { display: flex; align-items: center; gap: 1rem; min-height: 60px; }
.pd-bar__brand { font-family: var(--font-display); font-weight: 700; letter-spacing: -.02em; font-size: 1.02rem; color: var(--pd-on-ink); text-decoration: none; }
.pd-bar__brand span { color: var(--pd-accent); }
.pd-bar__nav { display: flex; gap: 1.4rem; margin-left: auto; }
.pd-bar__nav a { font-size: .9rem; color: var(--pd-on-ink-dim); text-decoration: none; transition: color var(--dur-fast) var(--ease); }
.pd-bar__nav a:hover { color: var(--pd-on-ink); }
.pd-bar__cta {
  margin-left: 1.2rem; padding: .55rem 1.15rem; font-size: .88rem; font-weight: 600;
  background: var(--pd-accent); color: var(--pd-ink); text-decoration: none;
  display: inline-flex; align-items: center; gap: .4em; white-space: nowrap;
  transition: filter var(--dur-fast) var(--ease), transform .08s var(--ease);
}
.pd-bar__cta:hover { filter: brightness(1.08); }
.pd-bar__cta:active { transform: translateY(1px); }
@media (max-width: 880px) { .pd-bar__nav { display: none; } .pd-bar__cta { margin-left: auto; } }

/* ============================================================
   ЛИПКАЯ НИЖНЯЯ CTA-ПОЛОСА — появляется при скролле за hero
   (единственная верхняя навигация — каноническая #site-header)
   ============================================================ */
.pd-stickybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-fab, 60);
  background: color-mix(in srgb, var(--pd-ink) 92%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-top: 1px solid var(--pd-line-ink); color: var(--pd-on-ink);
  transform: translateY(110%); visibility: hidden;
  transition: transform .4s var(--ease), visibility 0s linear .4s;
  box-shadow: 0 -10px 30px -10px rgb(0 0 0 / .5);
}
/* visibility:hidden убирает скрытую полосу из таб-порядка и AX-дерева —
   иначе фокус «проваливается» в aria-hidden-ссылку (WCAG aria-hidden-focus). */
.pd-stickybar.is-on { transform: none; visibility: visible; transition: transform .4s var(--ease), visibility 0s; }
.pd-stickybar__in { display: flex; align-items: center; gap: 1rem; padding: .7rem var(--pd-gut); max-width: var(--pd-maxw); margin-inline: auto; }
.pd-stickybar__txt { display: flex; flex-direction: column; line-height: 1.2; }
.pd-stickybar__txt b { font-family: var(--font-display); font-weight: 600; font-size: .98rem; }
.pd-stickybar__txt span { font-family: var(--font-mono); font-size: .72rem; color: var(--pd-on-ink-dim); letter-spacing: .04em; }
.pd-stickybar__cta { margin-left: auto; background: var(--pd-accent); color: var(--pd-ink); text-decoration: none; font-weight: 600; padding: .75rem 1.4rem; white-space: nowrap; transition: filter var(--dur-fast) var(--ease); }
.pd-stickybar__cta:hover { filter: brightness(1.08); }
@media (max-width: 520px) { .pd-stickybar__txt span { display: none; } .pd-stickybar__txt b { font-size: .9rem; } .pd-stickybar__cta { padding: .7rem 1.1rem; } }
@media (prefers-reduced-motion: reduce) { .pd-stickybar { transition: none; } }

/* ============================================================
   HERO — драматическая тёмная сцена
   ============================================================ */
.pd-hero {
  position: relative; background: var(--pd-ink); color: var(--pd-on-ink);
  padding-block: clamp(3.5rem, 8vw, 7rem) clamp(3rem, 6vw, 5.5rem);
  overflow: hidden; isolation: isolate;
}
/* свечение-меш фоном */
.pd-hero__glow { position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1; pointer-events: none; }
.pd-hero__glow::before, .pd-hero__glow::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55;
}
.pd-hero__glow::before { width: 46vw; height: 46vw; left: -8vw; top: -6vw; background: radial-gradient(circle, var(--orange), transparent 65%); animation: pd-float1 14s var(--ease) infinite alternate; }
.pd-hero__glow::after { width: 40vw; height: 40vw; right: -6vw; top: 8vw; background: radial-gradient(circle, var(--purple), transparent 62%); opacity: .42; animation: pd-float2 18s var(--ease) infinite alternate; }
@keyframes pd-float1 { to { transform: translate(6vw, 4vw) scale(1.1); } }
@keyframes pd-float2 { to { transform: translate(-5vw, 3vw) scale(1.12); } }
/* сетка-подложка */
.pd-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--pd-line-ink) 1px, transparent 1px), linear-gradient(90deg, var(--pd-line-ink) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
}

.pd-hero__eyebrow {
  display: inline-flex; align-items: center; gap: .6em; font-family: var(--font-mono);
  font-size: .76rem; letter-spacing: .18em; text-transform: uppercase; font-weight: 600;
  color: var(--pd-on-ink-dim); border: 1px solid var(--pd-line-ink);
  padding: .45rem .9rem; margin-bottom: 1.6rem;
}
.pd-hero__eyebrow .pd-pulse { width: .5rem; height: .5rem; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 0 color-mix(in srgb, var(--success) 70%, transparent); animation: pd-pulse 2.2s infinite; }
@keyframes pd-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--success) 60%, transparent); } 70% { box-shadow: 0 0 0 9px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.pd-hero__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.5rem, 1.2rem + 6.4vw, 6rem); line-height: .98;
  letter-spacing: -.04em; margin: 0 0 1.4rem; max-width: 16ch; text-wrap: balance;
}
.pd-hero__title .pd-em { background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pd-hero__sub { font-size: clamp(1.05rem, 1rem + .6vw, 1.4rem); line-height: 1.55; color: var(--pd-on-ink-dim); max-width: 54ch; margin: 0 0 2.2rem; }
.pd-hero__sub b { color: var(--pd-on-ink); font-weight: 600; }

.pd-cta-row { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.pd-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  font-family: var(--font-sans); font-weight: 600; text-decoration: none; cursor: pointer;
  border: 0; padding: 1.05rem 2rem; font-size: 1.05rem; letter-spacing: -.01em;
  transition: filter var(--dur-fast) var(--ease), transform .1s var(--ease), background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.pd-btn--primary { background: var(--pd-accent); color: var(--pd-ink); box-shadow: 0 14px 40px -12px color-mix(in srgb, var(--pd-accent) 80%, transparent); }
.pd-btn--primary:hover { filter: brightness(1.07); transform: translateY(-2px); }
.pd-btn--primary:active { transform: translateY(0); }
.pd-btn--ghost { background: transparent; color: var(--pd-on-ink); border: 1px solid var(--pd-line-ink); }
.pd-btn--ghost:hover { border-color: var(--pd-on-ink); background: color-mix(in srgb, #fff 6%, transparent); }
.pd-btn--lg { padding: 1.15rem 2.4rem; font-size: 1.12rem; }
/* кнопка на светлой части страницы (адаптивна к теме) */
.pd-btn--solid { background: hsl(var(--primary)); color: hsl(var(--primary-fg)); }
.pd-btn--solid:hover { filter: brightness(1.08); transform: translateY(-2px); }
.pd-btn--outline { background: transparent; color: hsl(var(--foreground)); border: 1px solid hsl(var(--border)); }
.pd-btn--outline:hover { border-color: var(--pd-accent); color: var(--pd-accent); }

.pd-hero__note { margin-top: 1.1rem; font-size: .86rem; color: var(--pd-on-ink-dim); display: flex; align-items: center; gap: .5em; }

/* — Полоса метрик под hero — */
.pd-hero__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: clamp(2.5rem, 5vw, 4rem); background: var(--pd-line-ink); border: 1px solid var(--pd-line-ink); }
.pd-stat { background: var(--pd-ink); padding: 1.4rem 1.2rem; }
.pd-stat__n { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.8rem, 1.2rem + 2vw, 2.8rem); line-height: 1; letter-spacing: -.02em; background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pd-stat__l { font-size: .82rem; color: var(--pd-on-ink-dim); margin-top: .5rem; line-height: 1.3; }
@media (max-width: 720px) { .pd-hero__stats { grid-template-columns: repeat(2, 1fr); } }

/* — Рельса Customer Journey (сквозной мотив) — */
.pd-rail { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.pd-rail__label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--pd-on-ink-dim); margin-bottom: 1rem; display: flex; justify-content: space-between; }
.pd-rail__track { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 0; }
.pd-rail__track::before { content: ""; position: absolute; left: 0; right: 0; top: 9px; height: 2px; background: linear-gradient(90deg, var(--pd-line-ink), var(--pd-accent) 50%, var(--pd-line-ink)); }
.pd-rail__stop { position: relative; padding-top: 26px; text-align: center; }
.pd-rail__stop::before { content: ""; position: absolute; top: 3px; left: 50%; transform: translateX(-50%); width: 14px; height: 14px; border-radius: 50%; background: var(--pd-ink); border: 2px solid color-mix(in srgb, var(--pd-accent) 60%, var(--pd-line-ink)); transition: transform var(--dur) var(--ease), background var(--dur) var(--ease); }
.pd-rail__stop:hover::before { background: var(--pd-accent); transform: translateX(-50%) scale(1.35); }
.pd-rail__stop b { display: block; font-family: var(--font-mono); font-size: .76rem; color: var(--pd-on-ink); letter-spacing: .04em; }
.pd-rail__stop span { display: block; font-size: .68rem; color: var(--pd-on-ink-dim); margin-top: .2rem; }
@media (max-width: 720px) {
  .pd-rail__track { grid-auto-flow: row; grid-auto-columns: auto; gap: .2rem; }
  .pd-rail__track::before { left: 9px; right: auto; top: 0; bottom: 0; width: 2px; height: auto; background: linear-gradient(180deg, var(--pd-line-ink), var(--pd-accent), var(--pd-line-ink)); }
  .pd-rail__stop { padding: .55rem 0 .55rem 32px; text-align: left; }
  .pd-rail__stop::before { top: .6rem; left: 9px; transform: none; }
  .pd-rail__stop:hover::before { transform: scale(1.35); }
  .pd-rail__label { display: none; }
}

/* ============================================================
   БЛОК «ПРОБЛЕМА» — крупная статистика
   ============================================================ */
.pd-problem { background: var(--pd-ink-2); color: var(--pd-on-ink); }
.pd-problem .pd-h2 { color: var(--pd-on-ink); }
.pd-problem__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.pd-bigstat { text-align: center; }
.pd-bigstat__n { font-family: var(--font-display); font-weight: 700; font-size: clamp(5rem, 2.5rem + 12vw, 12rem); line-height: .85; letter-spacing: -.05em; background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; overflow-wrap: normal; }
.pd-bigstat__c { font-size: 1rem; color: var(--pd-on-ink-dim); margin-top: 1rem; max-width: 30ch; margin-inline: auto; }
.pd-problem__list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .9rem; }
.pd-problem__list li { display: flex; gap: .8rem; align-items: flex-start; color: var(--pd-on-ink-dim); font-size: 1.02rem; line-height: 1.5; }
.pd-problem__list li::before { content: "✗"; color: var(--red); font-weight: 700; flex: none; margin-top: .1rem; }
@media (max-width: 820px) { .pd-problem__grid { grid-template-columns: 1fr; } }

/* ============================================================
   ДЛЯ КОГО — карточки аудиторий
   ============================================================ */
.pd-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: hsl(var(--border)); border: 1px solid hsl(var(--border)); }
.pd-card { background: hsl(var(--background)); padding: clamp(1.4rem, 2.5vw, 2rem); display: flex; flex-direction: column; gap: .7rem; transition: background var(--dur) var(--ease); }
.pd-card:hover { background: hsl(var(--muted-bg)); }
.pd-card__ic { font-family: var(--font-mono); font-size: .8rem; font-weight: 600; line-height: 1; letter-spacing: .06em; color: var(--pd-label); }
.pd-card__ic .pd-ic { width: 1.6rem; height: 1.6rem; }
.pd-card__t { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; letter-spacing: -.01em; }
.pd-card__d { font-size: .92rem; color: hsl(var(--muted-fg)); line-height: 1.5; }
.pd-card__tag { margin-top: auto; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em; color: var(--pd-label); }
@media (max-width: 900px) { .pd-cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .pd-cards { grid-template-columns: 1fr; } }

/* ============================================================
   ТРАНСФОРМАЦИЯ до→после
   ============================================================ */
.pd-transform { display: grid; gap: 1px; background: hsl(var(--border)); border: 1px solid hsl(var(--border)); }
.pd-transform__row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1.2rem; background: hsl(var(--background)); padding: 1.1rem clamp(1.2rem, 3vw, 2rem); }
.pd-transform__before { color: hsl(var(--muted-fg)); font-size: .98rem; }
.pd-transform__after { font-weight: 500; font-size: .98rem; }
.pd-transform__after b { color: var(--pd-label); font-weight: 600; }
.pd-transform__arr { font-family: var(--font-mono); color: var(--pd-label); font-weight: 700; }
@media (max-width: 720px) {
  .pd-transform__row { grid-template-columns: 1fr; gap: .35rem; padding: 1rem 1.2rem; }
  .pd-transform__arr { transform: rotate(90deg); width: max-content; }
  .pd-transform__before { text-decoration: line-through; opacity: .7; }
}

/* ============================================================
   ПРОГРАММА — таймлайн модулей (двойной алмаз)
   ============================================================ */
.pd-modules { display: grid; gap: 1rem; }
.pd-mod {
  border: 1px solid hsl(var(--border)); background: hsl(var(--card));
  display: grid; grid-template-columns: 96px 1fr; overflow: clip;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.pd-mod:hover { border-color: color-mix(in srgb, var(--pd-accent) 55%, hsl(var(--border))); }
.pd-mod__num { background: var(--pd-ink); color: var(--pd-on-ink); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .2rem; padding: 1.4rem .6rem; }
.pd-mod__num b { font-family: var(--font-display); font-weight: 700; font-size: 2rem; line-height: 1; background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pd-mod__num span { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--pd-on-ink-dim); }
.pd-mod__body { padding: clamp(1.2rem, 2.5vw, 1.8rem); display: grid; gap: .8rem; }
.pd-mod__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .6rem 1rem; }
.pd-mod__title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.15rem, 1rem + .8vw, 1.55rem); letter-spacing: -.02em; margin: 0; }
.pd-mod__phase { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--pd-label); }
.pd-mod__desc { color: hsl(var(--muted-fg)); font-size: .98rem; line-height: 1.55; margin: 0; }
.pd-mod__chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.pd-chip { font-family: var(--font-mono); font-size: .72rem; padding: .3rem .65rem; border: 1px solid hsl(var(--border)); color: hsl(var(--muted-fg)); white-space: nowrap; }
.pd-mod__out { font-size: .9rem; display: flex; gap: .5em; align-items: flex-start; padding-top: .3rem; border-top: 1px dashed hsl(var(--border)); }
.pd-mod__out b { color: var(--pd-label); font-weight: 600; }
.pd-mod__out::before { content: "⤷"; color: var(--pd-label); font-weight: 700; }
@media (max-width: 620px) { .pd-mod { grid-template-columns: 64px 1fr; } .pd-mod__num b { font-size: 1.4rem; } }

/* — Двойной алмаз (SVG-подпись над программой) — */
.pd-diamond { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0 0 clamp(2rem,4vw,3rem); border: 1px solid hsl(var(--border)); }
.pd-diamond__seg { padding: 1rem; text-align: center; border-right: 1px solid hsl(var(--border)); position: relative; }
.pd-diamond__seg:last-child { border-right: 0; }
.pd-diamond__seg b { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; display: block; color: var(--pd-label); }
.pd-diamond__seg span { font-size: .82rem; color: hsl(var(--muted-fg)); }
@media (max-width: 620px) { .pd-diamond { grid-template-columns: repeat(2,1fr); } .pd-diamond__seg:nth-child(2){border-right:0} }

/* ============================================================
   СТЕНА ФРЕЙМВОРКОВ — бегущие строки
   ============================================================ */
.pd-marquee { overflow: hidden; border-block: 1px solid hsl(var(--border)); padding-block: 1.4rem; display: grid; gap: 1rem; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.pd-marquee__row { display: flex; gap: .8rem; width: max-content; animation: pd-marq 38s linear infinite; }
.pd-marquee__row--rev { animation-direction: reverse; animation-duration: 46s; }
.pd-marquee:hover .pd-marquee__row { animation-play-state: paused; }
@keyframes pd-marq { to { transform: translateX(-50%); } }
.pd-fw { font-family: var(--font-mono); font-size: .92rem; padding: .6rem 1.1rem; border: 1px solid hsl(var(--border)); background: hsl(var(--card)); white-space: nowrap; color: hsl(var(--foreground)); }
.pd-fw b { color: var(--pd-label); }
@media (prefers-reduced-motion: reduce) { .pd-marquee__row { animation: none; flex-wrap: wrap; width: auto; } }

/* ============================================================
   АРТЕФАКТЫ — что соберёшь руками
   ============================================================ */
.pd-arts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: hsl(var(--border)); border: 1px solid hsl(var(--border)); }
.pd-art { background: hsl(var(--background)); padding: 1.3rem; display: flex; gap: .9rem; align-items: flex-start; transition: background var(--dur) var(--ease); }
.pd-art:hover { background: hsl(var(--muted-bg)); }
.pd-art__n { font-family: var(--font-mono); font-size: .8rem; color: var(--pd-label); font-weight: 600; flex: none; padding-top: .15rem; min-width: 2.2ch; }
.pd-art__t { font-size: .96rem; line-height: 1.4; font-weight: 500; }
@media (max-width: 820px) { .pd-arts { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px) { .pd-arts { grid-template-columns: 1fr; } }

/* ============================================================
   ПОЧЕМУ ИНАЧЕ — фичи
   ============================================================ */
.pd-why { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.4rem, 3vw, 2.2rem); }
.pd-why__item { display: grid; gap: .6rem; }
.pd-why__n { font-family: var(--font-mono); font-size: .8rem; color: var(--pd-label); }
.pd-why__t { font-family: var(--font-display); font-weight: 600; font-size: 1.18rem; letter-spacing: -.01em; }
.pd-why__d { color: hsl(var(--muted-fg)); font-size: .96rem; line-height: 1.55; }
@media (max-width: 820px) { .pd-why { grid-template-columns: 1fr; gap: 1.6rem; } }

/* ============================================================
   МЕТОДОЛОГИЯ / АВТОРИТЕТ — на чьих плечах
   ============================================================ */
.pd-authority { background: var(--pd-ink); color: var(--pd-on-ink); }
.pd-authority .pd-h2 { color: var(--pd-on-ink); }
.pd-authority .pd-lead { color: var(--pd-on-ink-dim); }
.pd-names { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2rem; }
.pd-name { border: 1px solid var(--pd-line-ink); padding: .7rem 1rem; display: grid; gap: .1rem; }
.pd-name b { font-size: .95rem; color: var(--pd-on-ink); }
.pd-name span { font-family: var(--font-mono); font-size: .72rem; color: var(--pd-on-ink-dim); }

/* ============================================================
   ОТЗЫВ-ИНСАЙТ (цитата из материалов)
   ============================================================ */
.pd-quote { text-align: center; }
.pd-quote blockquote { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.5rem, 1.1rem + 2.4vw, 2.6rem); line-height: 1.2; letter-spacing: -.02em; margin: 0 auto; max-width: 22ch; text-wrap: balance; }
.pd-quote blockquote .pd-em { background: var(--pd-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.pd-quote cite { display: block; margin-top: 1.4rem; font-family: var(--font-mono); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: hsl(var(--muted-fg)); font-style: normal; }

/* ============================================================
   FAQ
   ============================================================ */
.pd-faq { display: grid; gap: 0; border: 1px solid hsl(var(--border)); }
.pd-faq details { border-bottom: 1px solid hsl(var(--border)); }
.pd-faq details:last-child { border-bottom: 0; }
.pd-faq summary { cursor: pointer; list-style: none; padding: 1.25rem clamp(1.2rem,3vw,1.8rem); display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: -.01em; transition: color var(--dur-fast) var(--ease); }
.pd-faq summary::-webkit-details-marker { display: none; }
.pd-faq summary:hover { color: var(--pd-label); }
.pd-faq summary::after { content: "+"; font-family: var(--font-mono); font-size: 1.5rem; line-height: 1; color: var(--pd-label); flex: none; transition: transform var(--dur) var(--ease); }
.pd-faq details[open] summary::after { transform: rotate(45deg); }
.pd-faq__a { padding: 0 clamp(1.2rem,3vw,1.8rem) 1.4rem; color: hsl(var(--muted-fg)); line-height: 1.6; max-width: 70ch; }

/* ============================================================
   ФИНАЛЬНЫЙ CTA
   ============================================================ */
.pd-final { background: var(--pd-ink); color: var(--pd-on-ink); position: relative; overflow: hidden; isolation: isolate; text-align: center; }
.pd-final::before { content: ""; position: absolute; inset: auto -10% -40% ; height: 80%; z-index: -1; background: radial-gradient(ellipse at 50% 100%, color-mix(in srgb, var(--orange) 55%, transparent), transparent 70%); filter: blur(40px); }
.pd-final .pd-h2 { color: var(--pd-on-ink); font-size: clamp(2.2rem, 1.4rem + 4vw, 4.5rem); }
.pd-final__sub { color: var(--pd-on-ink-dim); font-size: clamp(1.05rem,1rem+.5vw,1.3rem); max-width: 48ch; margin: 1rem auto 2.2rem; line-height: 1.55; }
.pd-final .pd-cta-row { justify-content: center; }
.pd-final__meta { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: center; font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--pd-on-ink-dim); }
.pd-final__meta span { display: inline-flex; align-items: center; gap: .5em; }
.pd-final__meta span::before { content: "●"; color: var(--success); font-size: .6em; }

/* — Подвал лендинга — */
.pd-foot { background: var(--pd-ink); color: var(--pd-on-ink-dim); border-top: 1px solid var(--pd-line-ink); padding-block: 2.2rem; font-size: .85rem; }
.pd-foot__in { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
.pd-foot a { color: var(--pd-on-ink-dim); text-decoration: none; } .pd-foot a:hover { color: var(--pd-on-ink); }

/* ============================================================
   АНИМАЦИЯ ПОЯВЛЕНИЯ ПРИ СКРОЛЛЕ
   ============================================================ */
.pd-reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.pd-reveal.is-in { opacity: 1; transform: none; }
.pd-reveal[data-d="1"] { transition-delay: .07s; }
.pd-reveal[data-d="2"] { transition-delay: .14s; }
.pd-reveal[data-d="3"] { transition-delay: .21s; }
.pd-reveal[data-d="4"] { transition-delay: .28s; }
@media (prefers-reduced-motion: reduce) {
  .pd-reveal { opacity: 1; transform: none; transition: none; }
  /* гасим непрерывные фоновые анимации — свечение hero и пульс-точку */
  .pd-hero__glow::before, .pd-hero__glow::after { animation: none; }
  .pd-hero__eyebrow .pd-pulse { animation: none; }
}

/* ============================================================
   ИКОНКИ ЛЕНДИНГА · .pd-ic
   Те же линейные иконки 24×24 из общего спрайта (assets/img/icons.svg),
   что и канонический .ic (components.css). Спрайт инлайнится скриптом
   (landing.js, как React-IconSprite) — один источник. Здесь только
   стиль обводки, т.к. лендинг не грузит components.css.
   ============================================================ */
.pd-ic { width: 1.15em; height: 1.15em; flex: none; display: inline-block; vertical-align: -.18em;
  fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.pd-ic--lg { width: 2.1rem; height: 2.1rem; }
.pd { --pd-fog: color-mix(in srgb, var(--orange) 12%, transparent); }

/* ============================================================
   ПРОБЛЕМЫ → РЕШЕНИЯ · аккордеон-раскрывашки (эксклюзивный, name=)
   ============================================================ */
.pd-solve { border: 1px solid hsl(var(--border)); }
.pd-solve__item { border-bottom: 1px solid hsl(var(--border)); }
.pd-solve__item:last-child { border-bottom: 0; }
.pd-solve summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 1rem;
  padding: 1.05rem clamp(1.1rem, 3vw, 1.6rem); font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1rem, .95rem + .35vw, 1.18rem); transition: background var(--dur-fast) var(--ease); }
.pd-solve summary::-webkit-details-marker { display: none; }
.pd-solve summary:hover { background: hsl(var(--muted-bg)); }
.pd-solve__ic { display: inline-flex; width: 2.5rem; height: 2.5rem; flex: none; align-items: center; justify-content: center;
  color: var(--pd-label); border: 1px solid hsl(var(--border)); font-size: 1.1rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease); }
.pd-solve__item[open] .pd-solve__ic, .pd-solve summary:hover .pd-solve__ic {
  color: var(--pd-accent); border-color: color-mix(in srgb, var(--pd-accent) 45%, hsl(var(--border))); background: var(--pd-fog); }
.pd-solve__q { flex: 1; min-width: 0; letter-spacing: -.01em; }
.pd-solve__chev { color: var(--pd-label); flex: none; font-size: 1.2rem; transition: transform var(--dur) var(--ease); }
.pd-solve__item[open] .pd-solve__chev { transform: rotate(180deg); }
.pd-solve__a { padding: 0 clamp(1.1rem, 3vw, 1.6rem) 1.3rem calc(clamp(1.1rem, 3vw, 1.6rem) + 3.5rem);
  color: hsl(var(--muted-fg)); line-height: 1.6; display: grid; gap: .85rem; }
.pd-solve__a p { margin: 0; max-width: 62ch; }
.pd-solve__chips { display: flex; flex-wrap: wrap; gap: .4rem; }
@media (max-width: 560px) { .pd-solve__a { padding-left: clamp(1.1rem, 3vw, 1.6rem); } }

/* ============================================================
   КОМУ ПОДХОДИТ / НЕ ПОДХОДИТ · вкладки
   ============================================================ */
.pd-tabs__nav { display: inline-flex; flex-wrap: wrap; gap: .3rem; border: 1px solid hsl(var(--border)); padding: .35rem; margin-bottom: 1.8rem; }
.pd-tab { display: inline-flex; align-items: center; gap: .5em; font-family: var(--font-mono); font-size: .82rem;
  letter-spacing: .03em; font-weight: 600; padding: .7rem 1.1rem; border: 0; background: transparent;
  color: hsl(var(--muted-fg)); cursor: pointer; transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease); }
.pd-tab .pd-ic { font-size: 1rem; }
.pd-tab:hover { color: hsl(var(--foreground)); }
.pd-tab.is-active { background: hsl(var(--foreground)); color: hsl(var(--background)); }
.pd-tab-panel[hidden] { display: none; }
.pd-tab-panel { animation: pd-fade .4s var(--ease); }
@keyframes pd-fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.pd-fitlist { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; max-width: 64ch; }
.pd-fitlist li { display: flex; gap: .85rem; align-items: flex-start; font-size: 1.05rem; line-height: 1.5; }
.pd-fitlist .pd-ic { flex: none; margin-top: .12rem; font-size: 1.3rem; }
.pd-fitlist--yes .pd-ic { color: var(--success); }
.pd-fitlist--no .pd-ic { color: var(--red); }
@media (prefers-reduced-motion: reduce) { .pd-tab-panel { animation: none; } }

/* ============================================================
   СЛОВО АВТОРА · вертикальные ролики (тёмная сцена, лента-shelf)
   ============================================================ */
.pd-author { background: var(--pd-ink-2); color: var(--pd-on-ink); }
.pd-author .pd-h2 { color: var(--pd-on-ink); }
.pd-author .pd-lead { color: var(--pd-on-ink-dim); }
.pd-author .pd-kicker { color: var(--pd-accent); }
.pd-author .pd-kicker::before { background: var(--pd-accent); }
.pd-reels__track { display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x proximity;
  padding: .3rem var(--pd-gut) 1rem; scrollbar-width: none; cursor: grab; scroll-behavior: smooth; }
.pd-reels__track::-webkit-scrollbar { display: none; }
.pd-reels__track.is-drag { cursor: grabbing; scroll-snap-type: none; scroll-behavior: auto; }
.pd-reel { flex: 0 0 auto; width: min(72vw, 290px); scroll-snap-align: center; }
.pd-reel__poster { position: relative; aspect-ratio: 9 / 16; border: 1px solid var(--pd-line-ink); overflow: hidden;
  display: grid; place-items: center; isolation: isolate; }
.pd-reel__poster::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: .9; }
.pd-reel--a .pd-reel__poster::before { background: linear-gradient(150deg, var(--orange), var(--red) 60%, var(--purple)); }
.pd-reel--b .pd-reel__poster::before { background: linear-gradient(150deg, var(--purple), var(--blue) 55%, var(--orange)); }
.pd-reel--c .pd-reel__poster::before { background: linear-gradient(150deg, var(--red), var(--purple) 50%, var(--blue)); }
.pd-reel__poster::after { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgb(0 0 0 / .15), rgb(0 0 0 / .55)); }
.pd-reel__topic { position: absolute; top: 1rem; left: 1rem; right: 1rem; font-family: var(--font-display);
  font-weight: 700; font-size: 1.15rem; line-height: 1.1; letter-spacing: -.02em; color: #fff; text-shadow: 0 2px 12px rgb(0 0 0 / .4); }
.pd-reel__soon { position: absolute; top: 1rem; right: 1rem; font-family: var(--font-mono); font-size: .62rem;
  letter-spacing: .12em; text-transform: uppercase; color: #fff; background: rgb(0 0 0 / .35); backdrop-filter: blur(4px);
  border: 1px solid rgb(255 255 255 / .4); padding: .25rem .5rem; display: none; }
.pd-reel[data-video=""] .pd-reel__soon { display: block; }
.pd-reel__topic { padding-right: 4rem; }
.pd-reel__play { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 66px; height: 66px;
  border-radius: 50%; background: rgb(0 0 0 / .32); backdrop-filter: blur(6px); border: 1px solid rgb(255 255 255 / .55);
  color: #fff; display: grid; place-items: center; cursor: pointer; transition: transform .15s var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease); }
.pd-reel__play .pd-ic { width: 30px; height: 30px; }
.pd-reel__play:hover, .pd-reel__play:focus-visible { transform: translate(-50%, -50%) scale(1.1); background: var(--pd-accent); color: var(--pd-ink); border-color: transparent; }
.pd-reel__time { position: absolute; bottom: 1rem; left: 1rem; font-family: var(--font-mono); font-size: .72rem;
  color: #fff; background: rgb(0 0 0 / .35); backdrop-filter: blur(4px); padding: .2rem .5rem; }
.pd-reel video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; background: #000; }
.pd-reel.is-nudge .pd-reel__play { animation: pd-nudge .5s var(--ease); }
@keyframes pd-nudge { 0%,100% { transform: translate(-50%,-50%) scale(1); } 30% { transform: translate(-50%,-50%) scale(.9); } 60% { transform: translate(-50%,-50%) scale(1.12); } }
.pd-reel.is-nudge .pd-reel__soon { color: var(--pd-accent); border-color: var(--pd-accent); }
@media (prefers-reduced-motion: reduce) { .pd-reel.is-nudge .pd-reel__play { animation: none; } }
.pd-reels__ctrls { display: flex; gap: .6rem; margin-top: 1rem; }
.pd-author .pd-cbtn { border-color: var(--pd-line-ink); background: transparent; color: var(--pd-on-ink); }
.pd-author .pd-cbtn:hover:not(:disabled) { border-color: var(--pd-accent); color: var(--pd-accent); }

/* ============================================================
   ЧЕМУ НЕ УЧИТ · переворот-карточки (flip)
   ============================================================ */
.pd-flips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.pd-flip { perspective: 1400px; background: transparent; border: 0; padding: 0; margin: 0;
  font: inherit; text-align: left; cursor: pointer; display: block; }
/* грани сложены в одну grid-ячейку → контейнер сам берёт высоту высшей грани
   (надёжнее абсолютного позиционирования: span-inner раньше схлопывался в 0). */
.pd-flip__inner { display: grid; min-height: 230px; transform-style: preserve-3d; transition: transform .6s var(--ease); }
.pd-flip:hover .pd-flip__inner, .pd-flip:focus-visible .pd-flip__inner, .pd-flip.is-flipped .pd-flip__inner { transform: rotateY(180deg); }
.pd-flip__face { grid-area: 1 / 1; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  border: 1px solid hsl(var(--border)); padding: clamp(1.3rem, 2.5vw, 1.7rem); display: flex; flex-direction: column; gap: .8rem; }
.pd-flip__front { background: hsl(var(--card)); }
.pd-flip__back { background: var(--pd-ink); color: var(--pd-on-ink); transform: rotateY(180deg); border-color: var(--pd-line-ink); }
.pd-flip__front .pd-ic--lg { color: var(--red); }
.pd-flip__back .pd-ic--lg { color: var(--success); }
.pd-flip__t { font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; line-height: 1.2; letter-spacing: -.01em; }
.pd-flip__b { color: var(--pd-on-ink-dim); line-height: 1.5; font-size: .98rem; margin: 0; }
.pd-flip__hint { margin-top: auto; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--pd-label); display: inline-flex; gap: .4em; align-items: center; }
.pd-flip__hint .pd-ic { width: 1rem; height: 1rem; }
.pd-flip:focus-visible { outline: 2px solid var(--pd-accent); outline-offset: 3px; }
@media (max-width: 820px) { .pd-flips { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .pd-flips { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .pd-flip__inner { transition: none; } }

/* ============================================================
   ОТЗЫВЫ · перетаскиваемая лента (drag + snap + стрелки)
   ============================================================ */
.pd-revtrack { display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x proximity;
  padding: .3rem var(--pd-gut) .5rem; scrollbar-width: none; cursor: grab; scroll-behavior: smooth; }
.pd-revtrack::-webkit-scrollbar { display: none; }
.pd-revtrack.is-drag { cursor: grabbing; scroll-snap-type: none; scroll-behavior: auto; }
.pd-rev { flex: 0 0 auto; width: min(84vw, 380px); scroll-snap-align: start; border: 1px solid hsl(var(--border));
  background: hsl(var(--card)); padding: clamp(1.4rem, 3vw, 2rem); display: flex; flex-direction: column; gap: 1rem; }
.pd-rev__stars { display: inline-flex; gap: .12rem; color: var(--pd-accent); }
.pd-rev__stars .pd-ic { width: 1.05rem; height: 1.05rem; fill: currentColor; }
.pd-rev__q { font-size: 1.04rem; line-height: 1.55; font-weight: 500; flex: 1; margin: 0; }
.pd-rev__who { display: flex; align-items: center; gap: .8rem; }
.pd-rev__ava { width: 2.6rem; height: 2.6rem; border-radius: 50%; background: var(--pd-fog); border: 1px solid hsl(var(--border));
  display: grid; place-items: center; color: var(--pd-label); flex: none; }
.pd-rev__id { display: flex; flex-direction: column; min-width: 0; }
.pd-rev__id b { font-size: .95rem; }
.pd-rev__id span { font-family: var(--font-mono); font-size: .73rem; color: hsl(var(--muted-fg)); }
.pd-revctrls { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.2rem; flex-wrap: wrap; }
.pd-revnote { display: inline-flex; align-items: center; gap: .5em; font-family: var(--font-mono); font-size: .74rem;
  color: hsl(var(--muted-fg)); margin: 0; }
.pd-revbtns { display: flex; gap: .6rem; margin-left: auto; }

/* — Общая кнопка ленты (стрелки) — */
.pd-cbtn { width: 3rem; height: 3rem; border: 1px solid hsl(var(--border)); background: hsl(var(--card)); color: hsl(var(--foreground));
  display: inline-grid; place-items: center; cursor: pointer; transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), opacity var(--dur) var(--ease); }
.pd-cbtn .pd-ic { width: 1.3rem; height: 1.3rem; }
.pd-cbtn:hover:not(:disabled) { border-color: var(--pd-accent); color: var(--pd-accent); }
.pd-cbtn:disabled { opacity: .3; cursor: default; }

/* Фокус-кольцо для прокручиваемых лент (доступны с клавиатуры: tabindex=0). */
.pd-revtrack:focus-visible, .pd-reels__track:focus-visible { outline: 2px solid var(--pd-accent); outline-offset: -2px; }