/* =====================================================================
   SurveyRank - Q&A layer (дополняет ../styles.css, не переопределяет базу)
   ===================================================================== */

.qa-page main > section { overflow: visible; }
.qa-page main > section + section { border-top: 1px solid var(--divider); }

/* ---------- Header: активный пункт ---------- */
.nav-main a[aria-current="page"] { color: var(--text); background: var(--surface-2); }
.nav-main a, .nav-main .nav-drop__trigger { white-space: nowrap; }
.nav-qa-count {
  display: inline-block; margin-left: 6px; padding: 1px 6px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 10px; line-height: 1.5;
  color: var(--accent-cyan); background: rgba(77,171,255,0.1); border: 1px solid rgba(77,171,255,0.22);
  vertical-align: 1px;
}

/* ---------- Hero ---------- */
section.qa-hero { padding: calc(var(--header-h) + 48px) 0 44px; border-top: none; }
section.qa-hero + section { border-top: none; }

.qa-crumbs {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.02em;
  color: var(--muted); margin-bottom: 28px;
}
.qa-crumbs a { color: var(--text-3); }
.qa-crumbs a:hover { color: var(--accent-cyan); }
.qa-crumbs__sep { opacity: 0.4; }
.qa-crumbs [aria-current] { color: var(--text-2); }

.qa-eyebrow { margin-bottom: 22px; }

.qa-h1 {
  font-size: clamp(32px, 4.4vw, 58px);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 22px;
  max-width: 1000px;
  text-wrap: balance;
}
.qa-h1 .accent {
  background: linear-gradient(120deg, #b8dcff 0%, var(--accent-cyan) 45%, #7ea1ff 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.qa-lead {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--text-2);
  max-width: 800px;
  line-height: 1.55;
  margin-bottom: 28px;
}

.qa-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.qa-meta__item {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--card-border); background: var(--surface-1);
  font-size: 12.5px; color: var(--text-3); line-height: 1.3;
}
.qa-meta__item a { color: var(--text-2); }
.qa-meta__item a:hover { color: var(--accent-cyan); }
.qa-meta__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px var(--success); flex-shrink: 0; }

/* chip категории */
.qa-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
  color: var(--v-color, var(--accent-cyan));
  background: color-mix(in oklab, var(--v-color, var(--accent-cyan)) 12%, transparent);
  border: 1px solid color-mix(in oklab, var(--v-color, var(--accent-cyan)) 26%, transparent);
}
a.qa-chip:hover { color: var(--text); border-color: color-mix(in oklab, var(--v-color, var(--accent-cyan)) 55%, transparent); }
.qa-chip::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; box-shadow: 0 0 6px currentColor; }
.qa-num { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; color: var(--muted); }

.qa-q-top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 22px; }

.qa-question {
  display: flex; gap: 14px; align-items: baseline;
  max-width: 860px; margin: 0 0 28px;
  font-size: clamp(17px, 1.7vw, 21px); line-height: 1.5; color: var(--text-2);
}
.qa-question__label {
  flex-shrink: 0;
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--accent-cyan); padding: 3px 8px; border-radius: 6px;
  border: 1px solid rgba(77,171,255,0.25); background: rgba(77,171,255,0.06);
  transform: translateY(-2px);
}

/* ---------- Search (hub) ---------- */
.qa-search { position: relative; max-width: 680px; margin-top: 34px; }
.qa-search input {
  width: 100%; height: 58px; padding: 0 120px 0 54px;
  border-radius: 999px; border: 1px solid var(--card-border-2);
  background: rgba(255,255,255,0.04); color: var(--text);
  font-family: inherit; font-size: 16px; outline: none;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}
.qa-search input::placeholder { color: var(--muted); }
.qa-search input:focus { border-color: rgba(77,171,255,0.55); box-shadow: 0 0 0 4px rgba(29,89,245,0.18); }
.qa-search__ico { position: absolute; left: 20px; top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-3); pointer-events: none; }
.qa-search__count {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); font-size: 12px; color: var(--muted); pointer-events: none;
}

/* ---------- Hub: сетка категорий ---------- */
section.qa-cats-section { padding: 40px 0 72px; }
.qa-section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 28px; }
.qa-section-title { font-size: clamp(26px, 3vw, 40px); font-weight: 500; letter-spacing: -0.025em; line-height: 1.1; margin: 0; }
.qa-section-note { font-size: 14px; color: var(--text-3); margin: 0; }

.qa-cats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.qa-cats .vertical-card { padding: 22px 20px 20px; }
.qa-cats .vertical-card__title { font-size: 18px; }
.qa-cats .vertical-card__ico { width: 42px; height: 42px; }
.qa-cats .vertical-card__ico svg { width: 20px; height: 20px; }
.qa-cats .vertical-card__inner { gap: 14px; }

/* ---------- Hub: полный список ---------- */
section.qa-all { padding: 72px 0 80px; }
.qa-group { padding: 30px 0 26px; border-top: 1px solid var(--divider); }
.qa-group:first-of-type { border-top: none; padding-top: 0; }
.qa-group__head { display: flex; align-items: center; justify-content: space-between; gap: 12px 20px; flex-wrap: wrap; margin-bottom: 14px; }
.qa-group__title { display: flex; align-items: center; gap: 12px; margin: 0; font-size: 22px; font-weight: 500; letter-spacing: -0.015em; }
.qa-group__title a { color: var(--text); }
.qa-group__title a:hover { color: var(--v-color, var(--accent-cyan)); }
.qa-group__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--v-color); box-shadow: 0 0 12px var(--v-color); flex-shrink: 0; }
.qa-group__range { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.qa-group__more { font-size: 13px; font-weight: 600; color: var(--v-color, var(--accent-cyan)); white-space: nowrap; }
.qa-group__more:hover { color: var(--text); }

.qa-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 28px; }
.qa-list li { margin: 0; }
.qa-list a {
  display: grid; grid-template-columns: 46px 1fr; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  color: var(--text-2); font-size: 15px; line-height: 1.42;
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out);
}
.qa-list a:hover { background: var(--surface-2); color: var(--text); }
.qa-list .n { font-family: var(--font-mono); font-size: 12px; color: var(--muted); padding-top: 2px; }
.qa-list a:hover .n { color: var(--v-color, var(--accent-cyan)); }
.qa-empty { display: none; padding: 40px 0; color: var(--text-3); font-size: 16px; }
.qa-empty.is-visible { display: block; }

/* ---------- Layout: статья + сайдбар ---------- */
section.qa-main { padding: 40px 0 96px; }
.qa-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 56px; align-items: start; }
.qa-layout--left { grid-template-columns: 270px minmax(0, 1fr); }
.qa-article { min-width: 0; max-width: 800px; }

/* Ответ за 30 секунд */
.qa-quick {
  position: relative; overflow: hidden;
  padding: 28px 32px 30px; margin-bottom: 52px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(77,171,255,0.28);
  background: linear-gradient(135deg, rgba(29,89,245,0.16), rgba(77,171,255,0.03) 70%);
  box-shadow: 0 24px 60px -34px rgba(29,89,245,0.7);
}
.qa-quick::after {
  content: ''; position: absolute; right: -80px; top: -80px; width: 220px; height: 220px;
  background: radial-gradient(closest-side, rgba(77,171,255,0.18), transparent 70%);
  pointer-events: none;
}
.qa-quick__label {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 14px;
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--accent-cyan);
}
.qa-quick__label svg { width: 16px; height: 16px; }
.qa-quick p { position: relative; z-index: 1; margin: 0; font-size: 18px; line-height: 1.62; color: var(--text); }

.qa-h2 { font-size: clamp(24px, 2.4vw, 32px); font-weight: 500; letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 22px; }

.qa-body p { font-size: 17px; line-height: 1.72; margin-bottom: 18px; }
.qa-body p strong, .qa-body li strong { color: var(--text); font-weight: 600; }
.qa-body ul { list-style: none; padding: 0; margin: 6px 0 24px; }
.qa-body ul li { position: relative; padding-left: 26px; margin-bottom: 10px; font-size: 16.5px; line-height: 1.62; color: var(--text-2); }
.qa-body ul li::before {
  content: ''; position: absolute; left: 6px; top: 0.66em;
  width: 6px; height: 6px; border-radius: 2px;
  background: var(--accent-cyan); box-shadow: 0 0 8px var(--accent-glow-2);
}
.qa-body ol { list-style: none; padding: 0; margin: 6px 0 24px; counter-reset: qa; }
.qa-body ol li {
  counter-increment: qa; position: relative;
  padding: 14px 18px 14px 58px; margin-bottom: 8px;
  border: 1px solid var(--card-border); background: var(--card); border-radius: 12px;
  font-size: 16.5px; line-height: 1.6; color: var(--text-2);
}
.qa-body ol li::before {
  content: counter(qa, decimal-leading-zero);
  position: absolute; left: 18px; top: 15px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 500; color: var(--accent-cyan);
  letter-spacing: 0.04em;
}
.qa-body a { color: var(--accent-cyan); border-bottom: 1px dashed rgba(77,171,255,0.4); }
.qa-body a:hover { color: #b8dcff; border-bottom-color: #b8dcff; }

/* Связанные */
.qa-related { margin-top: 56px; padding-top: 44px; border-top: 1px solid var(--divider); }
.qa-related__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.qa-link-card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 18px 20px; border-radius: 14px;
  border: 1px solid var(--card-border); background: var(--card);
  color: var(--text);
  transition: transform 0.2s var(--ease-out), border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.qa-link-card:hover {
  color: var(--text); transform: translateY(-2px); background: var(--card-strong);
  border-color: color-mix(in oklab, var(--v-color, var(--accent-cyan)) 45%, transparent);
}
.qa-link-card__top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.qa-link-card__q { font-size: 15.5px; line-height: 1.42; font-weight: 500; }
.qa-link-card .qa-chip { font-size: 10px; padding: 3px 9px; }

/* Пейджер */
.qa-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 40px; }
.qa-pager a {
  display: flex; flex-direction: column; gap: 6px;
  padding: 18px 20px; border-radius: 14px;
  border: 1px solid var(--card-border); background: var(--surface-1); color: var(--text);
  transition: border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.qa-pager a:hover { color: var(--text); border-color: var(--card-border-2); background: var(--card-strong); }
.qa-pager__next { text-align: right; align-items: flex-end; }
.qa-pager__label { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.qa-pager__title { font-size: 14.5px; line-height: 1.4; color: var(--text-2); }
.qa-pager span.qa-pager__stub { display: block; }

/* Сайдбар вопроса */
.qa-aside { position: sticky; top: calc(var(--header-h) + 24px); min-width: 0; }
.qa-aside__box {
  padding: 18px; border-radius: var(--radius);
  border: 1px solid var(--card-border); background: var(--card);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.qa-aside__head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 2px 4px 14px; margin-bottom: 8px; border-bottom: 1px solid var(--divider); }
.qa-aside__title { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.3; }
.qa-aside__title:hover { color: var(--v-color, var(--accent-cyan)); }
.qa-aside__count { font-family: var(--font-mono); font-size: 11px; color: var(--muted); white-space: nowrap; }
.qa-aside__list { list-style: none; padding: 0 4px 0 0; margin: 0; max-height: calc(100vh - var(--header-h) - 190px); overflow-y: auto; }
.qa-aside__list li { margin: 0; }
.qa-aside__list a {
  display: grid; grid-template-columns: 38px 1fr; gap: 6px;
  padding: 8px 10px; border-radius: 8px;
  font-size: 13.5px; line-height: 1.38; color: var(--text-2);
}
.qa-aside__list a:hover { background: var(--surface-2); color: var(--text); }
.qa-aside__list a[aria-current="page"] { background: color-mix(in oklab, var(--v-color, var(--accent-cyan)) 14%, transparent); color: var(--text); }
.qa-aside__list .n { font-family: var(--font-mono); font-size: 11px; color: var(--muted); padding-top: 2px; }
.qa-aside__list a[aria-current="page"] .n { color: var(--v-color, var(--accent-cyan)); }
.qa-aside__foot { display: block; margin-top: 12px; padding: 12px 4px 2px; border-top: 1px solid var(--divider); font-size: 13px; font-weight: 600; color: var(--accent-cyan); }
.qa-aside__foot:hover { color: var(--text); }

/* Навигация по категориям (слева) */
.qa-catnav {
  position: sticky; top: calc(var(--header-h) + 24px);
  padding: 14px; border-radius: var(--radius);
  border: 1px solid var(--card-border); background: var(--card);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.qa-catnav__title { display: block; padding: 4px 10px 12px; font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.qa-catnav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 14px; line-height: 1.3; color: var(--text-2);
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out);
}
.qa-catnav a:hover { background: var(--surface-2); color: var(--text); }
.qa-catnav a[aria-current="page"] { background: color-mix(in oklab, var(--v-color) 14%, transparent); color: var(--text); }
.qa-catnav__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--v-color); box-shadow: 0 0 8px var(--v-color); flex-shrink: 0; }
.qa-catnav__c { margin-left: auto; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

/* Карточки вопросов в категории */
.qa-item {
  padding: 28px 30px; margin-bottom: 14px; border-radius: var(--radius-lg);
  border: 1px solid var(--card-border); background: var(--card);
  scroll-margin-top: calc(var(--header-h) + 20px);
  transition: border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.qa-item:hover { border-color: var(--card-border-2); background: var(--card-strong); }
.qa-item__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.qa-item__q { font-size: clamp(19px, 1.8vw, 23px); font-weight: 500; letter-spacing: -0.015em; line-height: 1.3; margin: 0 0 16px; }
.qa-item__q a { color: var(--text); }
.qa-item__q a:hover { color: var(--v-color, var(--accent-cyan)); }
.qa-item__label { display: block; margin-bottom: 6px; font-family: var(--font-mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--accent-cyan); }
.qa-item__a { font-size: 16px; line-height: 1.62; color: var(--text-2); margin: 0 0 16px; }
.qa-item__more { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--v-color, var(--accent-cyan)); }
.qa-item__more:hover { color: var(--text); }
.qa-item__more svg { width: 14px; height: 14px; transition: transform 0.2s var(--ease-out); }
.qa-item__more:hover svg { transform: translateX(3px); }

/* ---------- Disclaimer ---------- */
section.qa-disclaimer { padding: 56px 0 64px; }
.qa-disclaimer__box { padding: 28px 32px; border-radius: var(--radius-lg); border: 1px dashed var(--card-border-2); background: var(--surface-1); }
.qa-disclaimer__title { margin: 0 0 16px; font-family: var(--font-mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.qa-disclaimer__box p { font-size: 13.5px; line-height: 1.62; color: var(--text-3); margin-bottom: 10px; }
.qa-disclaimer__box p:last-child { margin-bottom: 0; }

/* ---------- Mobile nav: группы ---------- */
.mobile-nav a.mobile-nav__sub { font-size: 17px; padding: 12px 0; color: var(--text-2); display: flex; align-items: center; gap: 12px; }
.mobile-nav a.mobile-nav__sub .qa-catnav__dot { width: 7px; height: 7px; }

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .qa-cats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 1024px) {
  .qa-layout, .qa-layout--left { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .qa-article { max-width: none; }
  .qa-aside { position: static; }
  .qa-aside__list { max-height: none; }
  .qa-catnav {
    position: static; display: flex; gap: 8px; overflow-x: auto;
    margin: 0 -20px; padding: 0 20px 6px;
    border: 0; background: none; border-radius: 0;
    backdrop-filter: none; -webkit-backdrop-filter: none;
    scrollbar-width: none;
  }
  .qa-catnav::-webkit-scrollbar { display: none; }
  .qa-catnav__title { display: none; }
  .qa-catnav a { flex: 0 0 auto; white-space: nowrap; border: 1px solid var(--card-border); background: var(--card); border-radius: 999px; padding: 8px 14px; font-size: 13px; }
}
@media (max-width: 900px) {
  section.qa-hero { padding: calc(var(--header-h) + 32px) 0 32px; }
  .qa-cats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qa-list { grid-template-columns: minmax(0, 1fr); }
  section.qa-all { padding: 56px 0 64px; }
}
@media (max-width: 640px) {
  .qa-crumbs { font-size: 11px; margin-bottom: 20px; }
  .qa-question { flex-direction: column; gap: 8px; }
  .qa-quick { padding: 22px 20px 24px; margin-bottom: 40px; }
  .qa-quick p { font-size: 16.5px; }
  .qa-body p { font-size: 16px; }
  .qa-body ul li, .qa-body ol li { font-size: 15.5px; }
  .qa-body ol li { padding: 14px 14px 14px 48px; }
  .qa-body ol li::before { left: 14px; }
  .qa-related__grid, .qa-pager { grid-template-columns: minmax(0, 1fr); }
  .qa-pager__next { text-align: left; align-items: flex-start; }
  .qa-item { padding: 22px 20px; }
  .qa-disclaimer__box { padding: 22px 20px; }
  .qa-search input { height: 52px; font-size: 15px; padding-right: 20px; }
  .qa-search__count { display: none; }
  .qa-list a { font-size: 14.5px; grid-template-columns: 40px 1fr; padding: 10px 6px; }
}
@media (max-width: 520px) {
  .qa-cats { grid-template-columns: minmax(0, 1fr); }
}