/* ============================================================
   AI-First v5 — AI-справочник Роме
   Правки v4: hero на всю ширину, fixed TOC, большие карточки v1,
   интерактивные элементы, чек-листы и tooltip'ы.
   ============================================================ */

:root {
  --bg:        #f6f1e7;
  --bg-soft:   #faf6ec;
  --paper:     #fdfaf3;

  --ink:       #161513;
  --ink-2:     #4a463f;
  --ink-3:     #7a7468;
  --ink-4:     #b6b0a3;

  --peach:     #ff9c6e;
  --peach-2:   #ffc8a6;
  --lavender:  #b59cf5;
  --lavender-2:#dccdfb;
  --mint:      #5fb98a;
  --mint-2:    #c4eedc;
  --sun:       #ffc84a;
  --sky:       #94c8f0;
  --cherry:    #ff5b8e;

  --line:      rgba(22,21,19,.10);
  --line-2:    rgba(22,21,19,.18);

  --grad-peach-lav: linear-gradient(135deg,#ff9c6e 0%,#b59cf5 100%);
  --grad-lav-mint:  linear-gradient(135deg,#b59cf5 0%,#5fb98a 100%);
  --grad-warm:      linear-gradient(135deg,#ffc84a 0%,#ff9c6e 100%);
  --grad-cool:      linear-gradient(135deg,#5fb98a 0%,#94c8f0 100%);
  --grad-ink:       linear-gradient(135deg,#161513 0%,#7a7468 100%);

  --sh-soft:   0 1px 2px rgba(22,21,19,.04),
               0 4px 14px rgba(22,21,19,.05);
  --sh-card:   0 1px 0 rgba(255,255,255,.6) inset,
               0 6px 18px rgba(22,21,19,.06),
               0 18px 40px rgba(22,21,19,.04);
  --sh-glass:  0 1px 0 rgba(255,255,255,.7) inset,
               0 0 0 1px rgba(255,255,255,.18) inset,
               0 10px 30px rgba(22,21,19,.07);
  --sh-hero:   0 24px 64px rgba(22,21,19,.10);

  --maxw: 1240px;
  --pad:  clamp(18px, 3.6vw, 36px);
  --ease: cubic-bezier(.4,0,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px; line-height: 1.6;
  letter-spacing: -.005em;
  color: var(--ink);
  background:
    radial-gradient(900px 600px at 95% 5%, rgba(255,156,110,.08), transparent 60%),
    radial-gradient(800px 600px at 0% 30%, rgba(181,156,245,.07), transparent 60%),
    radial-gradient(900px 700px at 50% 110%, rgba(95,185,138,.05), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--peach); color: #fff; }
a { color: inherit; text-decoration: none; }

/* === Scroll progress bar (интерактив #1) === */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 3px; z-index: 100;
  background: rgba(22,21,19,.04);
}
.scroll-progress > div {
  height: 100%; width: 0%;
  background: var(--grad-peach-lav);
  transition: width .08s linear;
  box-shadow: 0 0 8px rgba(255,156,110,.4);
}

/* === Top nav === */
.nav {
  position: sticky; top: 12px; z-index: 60;
  margin: 12px var(--pad) 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 8px 12px 8px 16px;
  background: rgba(253,250,243,.7);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 999px;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: var(--sh-glass);
}
.nav-logo {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: 14.5px; letter-spacing: -.01em;
}
.nav-logo .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad-peach-lav);
}
.nav-logo b { font-weight: 700; }
.nav-logo i {
  font-style: normal; font-size: 11px; padding: 1px 7px;
  border-radius: 5px; background: var(--ink); color: var(--paper);
  letter-spacing: .08em; font-weight: 600;
}
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  padding: 6px 11px; font-size: 13.5px; border-radius: 999px;
  color: var(--ink-2); transition: background .15s var(--ease);
}
.nav-links a:hover { background: rgba(22,21,19,.05); color: var(--ink); }
.nav-links a.is-active { background: var(--ink); color: var(--paper); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-weight: 600; font-size: 13px;
}

/* === Dropdown "Модули" === */
.nav-dd { position: relative; }
.nav-dd-trigger {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 11px; font-size: 13.5px; border-radius: 999px;
  color: var(--ink-2); background: transparent; border: 0;
  font-family: inherit; cursor: pointer;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.nav-dd-trigger:hover { background: rgba(22,21,19,.05); color: var(--ink); }
.nav-dd-trigger.is-active-section { background: var(--ink); color: var(--paper); }
.nav-dd-trigger::after {
  content: ''; width: 0; height: 0;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 4px solid currentColor; opacity: .6;
  transition: transform .15s var(--ease);
  margin-left: 2px;
}
.nav-dd:hover .nav-dd-trigger::after,
.nav-dd:focus-within .nav-dd-trigger::after,
.nav-dd.is-open .nav-dd-trigger::after { transform: rotate(180deg); }

/* Невидимый bridge: устраняет hover-провал между триггером и меню */
.nav-dd::after {
  content: ''; position: absolute;
  left: 50%; top: 100%;
  width: 200px; height: 14px;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 65;
}
.nav-dd:hover::after,
.nav-dd:focus-within::after,
.nav-dd.is-open::after { pointer-events: auto; }

.nav-dd-menu {
  position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: 280px;
  padding: 8px;
  margin-top: 10px;
  background: rgba(253,250,243,.92);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 14px;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 12px 32px rgba(22,21,19,.12),
              0 1px 0 rgba(255,255,255,.7) inset;
  opacity: 0; pointer-events: none; visibility: hidden;
  transition: opacity .12s var(--ease), transform .12s var(--ease),
              visibility 0s linear .15s;
  z-index: 70;
  display: grid; gap: 1px;
}
/* На закрытие — задержка visibility, чтобы успеть «доехать» до меню */
.nav-dd:hover .nav-dd-menu,
.nav-dd:focus-within .nav-dd-menu,
.nav-dd.is-open .nav-dd-menu {
  opacity: 1; pointer-events: auto; visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition: opacity .12s var(--ease), transform .12s var(--ease),
              visibility 0s linear 0s;
}
.nav-dd-menu a {
  display: grid; grid-template-columns: 38px 1fr;
  gap: 10px; align-items: baseline;
  padding: 8px 12px; border-radius: 8px;
  color: var(--ink-2); font-size: 13.5px; line-height: 1.3;
  transition: background .12s var(--ease), color .12s var(--ease);
}
.nav-dd-menu a:hover { background: rgba(22,21,19,.05); color: var(--ink); }
.nav-dd-menu a.is-active {
  background: linear-gradient(135deg, rgba(255,200,166,.28), rgba(255,200,166,.10));
  color: var(--ink); font-weight: 600;
}
.nav-dd-menu .num {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  color: var(--ink-3); font-weight: 700; letter-spacing: .06em;
}
.nav-dd-menu a.is-active .num { color: var(--peach); }
.nav-dd-menu small {
  display: block;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--ink-4); font-weight: 500; letter-spacing: .06em;
  margin-top: 1px;
}
.nav-dd-sep {
  display: block; height: 1px;
  background: var(--line);
  margin: 4px 6px;
}

/* Mobile: внутри nav-links всё равно скрываем, но даём кнопку-бургер */
.nav-burger {
  display: none;
  background: transparent; border: 0;
  width: 36px; height: 32px; padding: 0;
  cursor: pointer; color: var(--ink);
  align-items: center; justify-content: center;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after {
  content: ''; display: block;
  width: 18px; height: 2px; background: currentColor;
  border-radius: 2px; position: relative;
  transition: transform .2s var(--ease), top .2s var(--ease), background .2s;
}
.nav-burger span::before { position: absolute; top: -6px; left: 0; }
.nav-burger span::after  { position: absolute; top:  6px; left: 0; }
.nav.is-open .nav-burger span { background: transparent; }
.nav.is-open .nav-burger span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .nav-burger span::after  { top: 0; transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-cta { display: none; }
  .nav.is-open {
    border-radius: 18px;
    flex-wrap: wrap;
  }
  .nav.is-open .nav-links {
    display: flex; flex-direction: column;
    width: 100%; order: 3;
    gap: 2px; padding: 8px 4px 4px;
    border-top: 1px solid var(--line); margin-top: 6px;
  }
  .nav.is-open .nav-links > a,
  .nav.is-open .nav-dd-trigger { width: 100%; justify-content: flex-start; padding: 10px 14px; }
  .nav.is-open .nav-dd { width: 100%; }
  .nav.is-open .nav-dd-menu {
    position: static; transform: none; min-width: 0;
    box-shadow: none; background: transparent; backdrop-filter: none;
    border: 0; padding: 4px 0 4px 18px;
    opacity: 1; pointer-events: auto; visibility: visible;
    margin-top: 2px;
  }
  .nav.is-open .nav-dd-menu a { padding: 7px 10px; }
}

/* === Hero на всю ширину === */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(36px, 5.5vw, 60px) var(--pad) clamp(20px, 3vw, 30px);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 480px; }
}

.hero .crumb {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .15em; text-transform: uppercase; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 8px;
}
.hero .crumb::before {
  content: ''; width: 16px; height: 1px; background: var(--ink-3);
}
.hero h1 {
  font-size: clamp(28px, 3.6vw, 44px);
  letter-spacing: -.025em; line-height: 1.12;
  font-weight: 700; margin: 12px 0 14px; color: var(--ink);
  max-width: 22ch;
}
.hero h1 em {
  font-style: normal;
  background: var(--grad-peach-lav);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero .lead {
  font-size: 16.5px; color: var(--ink-2);
  max-width: 56ch; line-height: 1.55; margin: 0;
}
.hero .meta-pills { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 18px; }
.pill-meta {
  display: inline-flex; gap: 5px; align-items: center;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(253,250,243,.7);
  border: 1px solid var(--line);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--ink-2);
  backdrop-filter: blur(8px);
}
.pill-meta .k { color: var(--ink-3); margin-right: 1px; }

/* Hero art (image / decorative on right side) */
.hero-art {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  aspect-ratio: 16/10.5;
  box-shadow: var(--sh-hero);
  background: var(--bg-soft);
}
.hero-art img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-art .badge {
  position: absolute; left: 14px; bottom: 14px;
  padding: 6px 12px;
  background: rgba(253,250,243,.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2);
  backdrop-filter: blur(10px);
}

/* Note from Дима (warm, restrained) */
.note-roma {
  margin-top: 16px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 14px; color: var(--ink-2);
  max-width: 56ch;
  background: linear-gradient(135deg, rgba(255,200,166,.12), rgba(253,250,243,.6));
  backdrop-filter: blur(8px);
  position: relative;
}
.note-roma::before {
  content: 'РОМЕ'; position: absolute; top: -8px; left: 14px;
  background: var(--bg); padding: 0 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: .18em; color: var(--peach); font-weight: 700;
}

/* === Containers === */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
section { padding: clamp(36px, 4vw, 56px) 0; position: relative; }

/* === Headings === */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 500;
}
.eyebrow::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--peach);
}
h2.h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700; letter-spacing: -.02em; line-height: 1.2;
  margin: 10px 0 8px;
}
h3.h3 {
  font-size: 18px; font-weight: 600; letter-spacing: -.012em;
  margin: 18px 0 6px;
}
.lead {
  font-size: 16px; color: var(--ink-2);
  max-width: 64ch; margin: 0 0 14px;
}
.lead.tight { font-size: 15px; }

/* === Glass card (general) === */
.glass {
  position: relative;
  padding: 20px 22px;
  background: rgba(253,250,243,.6);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 16px;
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--sh-soft);
}
.glass::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
    rgba(255,184,158,.40) 0%,
    rgba(255,255,255,0)   30%,
    rgba(197,166,247,.30) 65%,
    rgba(146,224,197,.35) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.glass.peach    { background: linear-gradient(135deg, rgba(255,200,166,.20), rgba(253,250,243,.6) 70%); }
.glass.lavender { background: linear-gradient(135deg, rgba(220,205,251,.22), rgba(253,250,243,.6) 70%); }
.glass.mint     { background: linear-gradient(135deg, rgba(196,238,220,.24), rgba(253,250,243,.6) 70%); }
.glass .e {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3);
}
.glass h4 {
  font-size: 17px; font-weight: 700; line-height: 1.25; margin: 8px 0 6px;
  color: var(--ink); letter-spacing: -.012em;
}
.glass p { color: var(--ink-2); font-size: 14.5px; line-height: 1.55; margin: 0; }

/* === Grid === */
.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 700px) and (max-width: 1100px) {
  .grid-3 { grid-template-columns: repeat(2,1fr); }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
}

/* ============================================================
   БОЛЬШИЕ КАРТОЧКИ v1 + glass (как в первой версии)
   ============================================================ */

.big-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 14px; margin: 18px 0;
}
@media (max-width: 1100px) { .big-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px)  { .big-grid { grid-template-columns: 1fr; } }

.big-card {
  position: relative;
  display: flex; flex-direction: column; gap: 12px;
  padding: 22px 24px 22px;
  background: rgba(253,250,243,.65);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 18px;
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--sh-soft);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              border-color .2s var(--ease);
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.big-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-card);
  border-color: rgba(255,255,255,.85);
}
.big-card::before {
  content: '';
  position: absolute; left: 24px; right: 24px; top: 0;
  height: 3px; border-radius: 0 0 6px 6px;
  background: var(--grad-peach-lav);
}
.big-card[data-accent="cool"]::before { background: var(--grad-lav-mint); }
.big-card[data-accent="warm"]::before { background: var(--grad-warm); }
.big-card[data-accent="green"]::before { background: var(--grad-cool); }
.big-card[data-accent="ink"]::before  { background: var(--grad-ink); }
.big-card[data-accent="cherry"]::before { background: linear-gradient(135deg,#ff5b8e,#b59cf5); }

.big-card .mod-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
}
.big-card .mod-no {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .15em; color: var(--ink-3); font-weight: 600;
}
.big-card .mod-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  padding: 3px 9px; border: 1px solid var(--line);
  border-radius: 999px; color: var(--ink-3); background: var(--paper);
}
.big-card .mod-title {
  font-size: 21px; font-weight: 700; line-height: 1.22;
  letter-spacing: -.015em; color: var(--ink);
  margin: 4px 0 0;
}
.big-card .mod-desc {
  color: var(--ink-2); font-size: 14.5px; line-height: 1.55; margin: 0;
}
.big-card .mod-cta {
  margin-top: auto; padding-top: 6px;
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 14px; color: var(--ink);
}
.big-card .mod-cta .arrow { transition: transform .2s var(--ease); display: inline-block; }
.big-card:hover .mod-cta .arrow { transform: translateX(4px); }

.big-card.featured {
  background: linear-gradient(135deg, rgba(255,200,166,.20), rgba(253,250,243,.7) 60%);
  border-color: rgba(255,184,158,.35);
}

/* === Search filter (интерактив #2) === */
.search-bar {
  display: flex; gap: 10px; align-items: center;
  margin: 14px 0 22px;
  padding: 10px 16px;
  background: rgba(253,250,243,.7);
  border: 1px solid var(--line);
  border-radius: 999px;
  max-width: 480px;
}
.search-bar input {
  flex: 1; background: transparent; border: 0; outline: none;
  font-family: inherit; font-size: 14.5px; color: var(--ink);
}
.search-bar input::placeholder { color: var(--ink-3); }
.search-bar .search-icon {
  width: 16px; height: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-3);
}
.search-bar .search-clear {
  font-size: 12px; color: var(--ink-3); cursor: pointer;
  background: rgba(22,21,19,.06); padding: 3px 9px; border-radius: 999px;
  border: 0; font-family: 'JetBrains Mono', monospace; letter-spacing: .04em;
  display: none;
}
.search-bar.has-query .search-clear { display: inline-block; }

/* === Promp builder mini-tool (интерактив #3) === */
.builder {
  margin: 18px 0;
  padding: 22px 24px;
  background: rgba(253,250,243,.7);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 18px;
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--sh-soft);
}
.builder h3 {
  margin: 0 0 6px; font-size: 18px; font-weight: 700;
  letter-spacing: -.015em; color: var(--ink);
}
.builder p.desc {
  font-size: 14px; color: var(--ink-3); margin: 0 0 14px;
}
.builder-row {
  display: grid; grid-template-columns: 130px 1fr;
  gap: 10px; align-items: center; margin-bottom: 8px;
}
.builder-row label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 600;
}
.builder-row input, .builder-row textarea {
  font-family: inherit; font-size: 14px;
  padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper);
  color: var(--ink); outline: none;
  transition: border-color .15s var(--ease);
  width: 100%; resize: none;
  font-family: 'JetBrains Mono', monospace;
}
.builder-row input:focus, .builder-row textarea:focus {
  border-color: var(--peach);
  box-shadow: 0 0 0 3px rgba(255,156,110,.12);
}
@media (max-width: 600px) {
  .builder-row { grid-template-columns: 1fr; gap: 4px; }
}
.builder-out {
  margin-top: 14px;
  background: #1a1815; color: #f4eee4;
  border-radius: 10px; padding: 16px 18px;
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.65;
  white-space: pre-wrap; word-break: break-word;
  position: relative;
}
.builder-out .h { color: #ffb89e; font-weight: 700; }
.builder-out .v { color: #c5a6f7; }
.builder-out .ph { color: rgba(255,255,255,.35); font-style: italic; }
.builder-actions { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.builder-btn {
  padding: 7px 14px; border-radius: 999px;
  font-family: inherit; font-size: 13px; font-weight: 600;
  background: var(--ink); color: var(--paper);
  border: 0; cursor: pointer;
  transition: transform .15s var(--ease);
}
.builder-btn:hover { transform: translateY(-1px); }
.builder-btn.ghost {
  background: transparent; color: var(--ink); border: 1px solid var(--line-2);
}
.builder-btn .check { display: none; }
.builder-btn.copied .check { display: inline; }
.builder-btn.copied .copy-text { display: none; }

/* === Steps === */
.steps {
  list-style: none; padding: 0; margin: 14px 0;
  counter-reset: step;
  display: grid; gap: 10px;
}
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 60px;
  background: rgba(253,250,243,.6);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 14px;
  backdrop-filter: blur(14px) saturate(180%);
}
.steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 14px; top: 14px;
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--grad-peach-lav); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 700;
  letter-spacing: .04em;
}
.steps > li:nth-child(2)::before { background: var(--grad-lav-mint); }
.steps > li:nth-child(3)::before { background: var(--grad-cool); }
.steps > li:nth-child(4)::before { background: var(--grad-warm); }
.steps > li:nth-child(5)::before { background: linear-gradient(135deg,#b59cf5,#ff9c6e); }
.steps > li:nth-child(6)::before { background: var(--ink); }
.steps .st-title { font-weight: 700; font-size: 15.5px; line-height: 1.3; margin: 0 0 3px; letter-spacing: -.01em; }
.steps .st-text { color: var(--ink-2); font-size: 14.5px; line-height: 1.55; margin: 0; }

/* === Aside === */
.aside {
  margin: 16px 0; padding: 12px 16px;
  border-left: 3px solid var(--peach);
  background: linear-gradient(90deg, rgba(255,200,166,.16), rgba(253,250,243,.4) 75%);
  border-radius: 0 12px 12px 0;
  font-size: 14.5px; color: var(--ink-2);
}
.aside.lavender { border-left-color: var(--lavender);
                  background: linear-gradient(90deg, rgba(220,205,251,.20), rgba(253,250,243,.4) 75%); }
.aside.mint     { border-left-color: var(--mint);
                  background: linear-gradient(90deg, rgba(196,238,220,.20), rgba(253,250,243,.4) 75%); }
.aside .lbl {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: .16em; text-transform: uppercase; color: var(--peach);
  margin-bottom: 3px; font-weight: 600;
}
.aside.lavender .lbl { color: var(--lavender); }
.aside.mint .lbl { color: var(--mint); }
.aside p { margin: 3px 0 0; }
.aside p:first-child { margin-top: 0; }

/* === Big quote === */
.bigquote {
  margin: 24px 0;
  padding: 18px 22px 16px;
  background: rgba(253,250,243,.6);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 14px;
  backdrop-filter: blur(16px) saturate(180%);
  position: relative;
}
.bigquote::before {
  content: '"'; position: absolute; left: 14px; top: -22px;
  font-family: Georgia, serif; font-size: 80px; font-weight: 700;
  color: var(--peach); line-height: 1; opacity: .85;
}
.bigquote p {
  font-size: 16.5px; line-height: 1.45;
  color: var(--ink); margin: 0; font-weight: 500; letter-spacing: -.005em;
}
.bigquote .by {
  margin-top: 10px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  color: var(--ink-3); letter-spacing: .04em;
}

/* === Prompt block с кнопкой копирования (интерактив #4) === */
.prompt-wrap { position: relative; }
.prompt-wrap .prompt-copy {
  position: absolute; top: 10px; right: 10px;
  padding: 5px 10px; border-radius: 999px;
  background: rgba(255,255,255,.10); color: rgba(255,255,255,.7);
  border: 1px solid rgba(255,255,255,.15);
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .08em; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  z-index: 2;
}
.prompt-wrap .prompt-copy:hover {
  background: rgba(255,255,255,.18); color: #fff; border-color: rgba(255,255,255,.3);
}
.prompt-wrap .prompt-copy.copied {
  background: var(--mint); color: #0c2a18; border-color: var(--mint);
}
.prompt {
  background: #1a1815; color: #f4eee4;
  border-radius: 12px;
  padding: 16px 18px; margin: 14px 0;
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.6;
  overflow-x: auto; white-space: pre;
  border: 1px solid #2a2520;
}
.prompt .com { color: rgba(255,255,255,.45); font-style: italic; }
.prompt .h   { color: #ffb89e; font-weight: 700; }
.prompt .v   { color: #c5a6f7; }
.prompt .s   { color: #92e0c5; }

/* === Compare === */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 14px 0; }
@media (max-width: 700px) { .compare { grid-template-columns: 1fr; } }
.compare .col {
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid rgba(255,255,255,.6);
  background: rgba(253,250,243,.6);
  backdrop-filter: blur(12px) saturate(180%);
}
.compare .col.bad { background: linear-gradient(160deg, rgba(255,200,166,.16), rgba(253,250,243,.6) 70%); }
.compare .col.ok  { background: linear-gradient(160deg, rgba(196,238,220,.18), rgba(253,250,243,.6) 70%); }
.compare .col .lbl {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 6px;
}
.compare .col.bad .lbl { color: var(--peach); }
.compare .col.ok  .lbl { color: var(--mint); }
.compare .col p { margin: 3px 0; font-size: 14px; color: var(--ink-2); }

/* === ВИКТОРИНЫ — pure CSS via :has() === */
.quiz {
  margin: 22px 0;
  padding: 18px 20px 16px;
  background: rgba(253,250,243,.7);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 16px;
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--sh-soft);
}
.quiz-tag {
  display: inline-flex; gap: 6px; align-items: center;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .16em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px;
  background: var(--grad-peach-lav); color: #fff;
  font-weight: 700;
}
.quiz-q {
  font-size: 16px; font-weight: 600; color: var(--ink);
  margin: 10px 0 12px; line-height: 1.4; letter-spacing: -.01em;
}
.quiz-q small {
  display: block; font-size: 12.5px; font-weight: 400; color: var(--ink-3);
  margin-top: 3px; font-family: 'JetBrains Mono', monospace;
  letter-spacing: .04em;
}
.q-options { display: grid; gap: 8px; }
.q-opt {
  display: grid; grid-template-columns: 22px 1fr;
  gap: 12px; align-items: start;
  padding: 11px 14px; border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.5);
  cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease);
  position: relative;
}
.q-opt:hover { background: rgba(255,255,255,.85); border-color: var(--line-2); }
.q-opt input { margin: 4px 0 0; accent-color: var(--ink); }
.q-opt .q-text { font-size: 14.5px; color: var(--ink-2); line-height: 1.5; }
.q-opt .q-fb {
  display: none;
  grid-column: 2; margin-top: 8px; padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px; color: var(--ink-2); line-height: 1.5;
}
.q-opt:has(input:checked) .q-fb { display: block; }
.q-opt:has(input:checked) {
  background: rgba(255,255,255,.95);
  border-color: var(--line-2);
}
.q-opt.q-correct:has(input:checked) {
  background: linear-gradient(135deg, rgba(196,238,220,.5), rgba(253,250,243,.9));
  border-color: var(--mint);
}
.q-opt.q-correct:has(input:checked) .q-text::before {
  content: '✓ '; color: var(--mint); font-weight: 700;
}
.q-opt:not(.q-correct):has(input:checked) {
  background: linear-gradient(135deg, rgba(255,200,166,.32), rgba(253,250,243,.9));
  border-color: var(--peach);
}
.q-opt:not(.q-correct):has(input:checked) .q-text::before {
  content: '✕ '; color: var(--peach); font-weight: 700;
}
.q-reset {
  margin-top: 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .04em; color: var(--ink-3);
  display: none;
}
.quiz:has(input:checked) .q-reset { display: block; }
.q-reset a { color: var(--ink-2); border-bottom: 1px dashed var(--ink-3); }

/* === Tooltips на терминах (интерактив #5) === */
.term {
  border-bottom: 1px dashed var(--peach);
  cursor: help;
  position: relative;
  font-weight: 500; color: var(--ink);
}
.term::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--ink); color: var(--paper);
  padding: 9px 13px; border-radius: 10px;
  font-size: 12.5px; line-height: 1.45; font-weight: 400;
  letter-spacing: 0;
  width: max-content; max-width: 280px;
  box-shadow: 0 12px 28px rgba(22,21,19,.20);
  z-index: 50;
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s var(--ease), transform .15s var(--ease);
}
.term::before {
  content: ''; position: absolute;
  bottom: calc(100% + 4px); left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--ink);
  z-index: 50;
  opacity: 0;
  transition: opacity .15s var(--ease);
}
.term:hover::after, .term:focus::after { opacity: 1; transform: translateX(-50%) translateY(0); }
.term:hover::before, .term:focus::before { opacity: 1; }

/* ============================================================
   ARTICLE LAYOUT
   ============================================================ */

.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  max-width: 1200px;
  margin: 24px auto 0;
  padding: 0 var(--pad) 60px;
}
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; gap: 16px; } }

/* TOC sidebar — починенная нормально === */
.toc {
  position: sticky; top: 86px;
  align-self: start;
  font-size: 13px;
  background: rgba(253,250,243,.7);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 14px;
  backdrop-filter: blur(16px) saturate(180%);
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}
@media (max-width: 980px) {
  .toc { position: static; max-height: none; }
}
.toc-head {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 10px;
  padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.toc-head .e {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 600;
}
.toc-head a {
  margin-left: auto; font-size: 11px; color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace; letter-spacing: .04em;
}
.toc-head a:hover { color: var(--ink); }

.toc-group { margin: 8px 0 12px; }
.toc-group + .toc-group { padding-top: 8px; border-top: 1px dashed var(--line); }
.toc-group-label {
  font-family: 'JetBrains Mono', monospace; font-size: 9.5px;
  letter-spacing: .18em; text-transform: uppercase; color: var(--ink-4);
  margin: 0 0 6px; font-weight: 700;
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { margin: 0; }
.toc-list a {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 8px; border-radius: 8px;
  color: var(--ink-2);
  transition: background .15s var(--ease), color .15s var(--ease);
  font-size: 13px; line-height: 1.35;
  white-space: normal; word-break: break-word;
  min-height: 28px;
}
.toc-list a:hover { background: rgba(22,21,19,.04); color: var(--ink); }
.toc-list a.is-active {
  background: linear-gradient(135deg, rgba(255,200,166,.30), rgba(255,200,166,.10));
  color: var(--ink); font-weight: 600;
}
.toc-list .num {
  flex: 0 0 22px;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  color: var(--ink-3); font-weight: 600;
  text-align: left;
}
.toc-list a.is-active .num { color: var(--peach); }
.toc-list .ttl { flex: 1; min-width: 0; }
.toc-list .quiz-marker {
  display: inline-block; flex-shrink: 0;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--peach); margin-left: 4px;
}
.toc-list .indent .num { visibility: hidden; }
.toc-list .indent { font-size: 12px; color: var(--ink-3); }
.toc-list .indent a { padding-left: 12px; }

/* Floating "back to nav" button */
.toc-fab {
  position: fixed; right: 16px; bottom: 16px; z-index: 50;
  display: none;
  align-items: center; gap: 6px;
  padding: 10px 14px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  letter-spacing: .08em; font-weight: 700;
  box-shadow: 0 12px 28px rgba(22,21,19,.20);
  cursor: pointer;
  transition: transform .2s var(--ease);
  border: 0;
}
.toc-fab:hover { transform: translateY(-2px); }
@media (max-width: 980px) { .toc-fab { display: inline-flex; } }

/* Article */
article {
  max-width: 720px; min-width: 0;
  font-size: 16px; line-height: 1.65;
  color: var(--ink-2);
}
article p strong { color: var(--ink); }
article > h1 {
  font-size: clamp(28px, 3.4vw, 38px); margin: 0 0 10px;
  font-weight: 700; letter-spacing: -.025em; line-height: 1.15;
  color: var(--ink); max-width: 22ch;
}
article > h1 em {
  font-style: normal;
  background: var(--grad-peach-lav);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
article > .lead {
  font-size: 16px; color: var(--ink-2); max-width: 64ch;
  margin: 0 0 14px;
}
article h2 {
  font-size: 21px; margin: 32px 0 8px;
  font-weight: 700; letter-spacing: -.015em; line-height: 1.25;
  scroll-margin-top: 100px; color: var(--ink);
  display: flex; align-items: center; gap: 10px;
}
article h2 .num {
  display: inline-block;
  background: var(--grad-peach-lav); color: #fff;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  padding: 3px 8px; border-radius: 6px; font-weight: 700;
  letter-spacing: .04em;
  flex-shrink: 0;
}
article h2:nth-of-type(2) .num { background: var(--grad-lav-mint); }
article h2:nth-of-type(3) .num { background: var(--grad-cool); }
article h2:nth-of-type(4) .num { background: var(--grad-warm); }
article h2:nth-of-type(5) .num { background: linear-gradient(135deg,#b59cf5,#ff9c6e); }
article h2:nth-of-type(6) .num { background: var(--ink); }
article h2:nth-of-type(7) .num { background: var(--cherry); }
article h2:nth-of-type(8) .num { background: var(--mint); }
article h2:nth-of-type(9) .num { background: linear-gradient(135deg,#94c8f0,#b59cf5); }

article h3 {
  font-size: 16px; font-weight: 700; line-height: 1.3;
  margin: 18px 0 6px; scroll-margin-top: 100px;
  color: var(--ink);
}
article a.link {
  color: var(--ink); text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px; background-position: 0 100%;
  background-repeat: no-repeat; padding-bottom: 1px;
  transition: color .15s;
}
article a.link:hover { color: var(--peach); }
article code.inline {
  font-family: 'JetBrains Mono', monospace; font-size: .9em;
  padding: 2px 6px; border-radius: 4px;
  background: rgba(253,250,243,.7); border: 1px solid var(--line);
  color: var(--ink);
}

article ul { padding-left: 20px; margin: 10px 0; }
article ol { padding-left: 20px; margin: 10px 0; }
article li { margin: 5px 0; }

.doc-meta {
  display: flex; gap: 14px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  color: var(--ink-3);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 8px 0; margin: 12px 0 22px;
}
.doc-meta b { color: var(--ink); font-weight: 600; }

mark.hl {
  background: linear-gradient(180deg, transparent 60%, rgba(255,200,166,.50) 60%);
  color: var(--ink); padding: 0 2px; font-weight: 500;
}
mark.hl.lav  { background: linear-gradient(180deg, transparent 60%, rgba(220,205,251,.55) 60%); }
mark.hl.mint { background: linear-gradient(180deg, transparent 60%, rgba(196,238,220,.6) 60%); }

/* Reveal animation (интерактив #6) */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* Pager */
.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin-top: 32px; padding-top: 20px;
  border-top: 1px solid var(--line);
}
.pager a {
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(253,250,243,.65);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  display: flex; flex-direction: column; gap: 3px;
  transition: transform .2s var(--ease), border-color .15s;
}
.pager a:hover { transform: translateY(-1px); border-color: var(--line-2); }
.pager .k {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
}
.pager .t { font-weight: 600; font-size: 14.5px; color: var(--ink); }
.pager .next { text-align: right; }
@media (max-width: 600px) { .pager { grid-template-columns: 1fr; } }

footer {
  margin-top: 50px; padding: 30px var(--pad) 50px;
  max-width: var(--maxw); margin-left: auto; margin-right: auto;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; color: var(--ink-3); font-size: 13px;
}
footer a { color: var(--ink-2); }

/* ============================================================
   v6 ADDITIONS — file links, image fallback, final test
   ============================================================ */

/* Кликабельные ссылки на файлы */
.file-link {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: 'JetBrains Mono', monospace; font-size: .9em;
  padding: 1px 8px 1px 6px; border-radius: 5px;
  background: rgba(253,250,243,.7);
  border: 1px solid var(--line);
  color: var(--ink); text-decoration: none;
  transition: background .15s var(--ease), border-color .15s var(--ease);
  white-space: nowrap; line-height: 1.4;
}
.file-link:hover {
  background: linear-gradient(135deg, rgba(255,156,110,.18), rgba(255,200,166,.10));
  border-color: var(--peach);
}
.file-link::before {
  content: '';
  width: 9px; height: 11px;
  flex-shrink: 0; display: inline-block;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 11' fill='none'><path d='M0.5 1.5C0.5 0.95 0.95 0.5 1.5 0.5H5L8.5 4V9.5C8.5 10.05 8.05 10.5 7.5 10.5H1.5C0.95 10.5 0.5 10.05 0.5 9.5V1.5Z' stroke='%23ff9c6e' stroke-width='1' fill='%23fff7f0'/><path d='M5 0.5V4H8.5' stroke='%23ff9c6e' stroke-width='1' fill='none'/></svg>");
  background-repeat: no-repeat; background-size: contain;
}

/* === Image fallback (если картинка отсутствует) === */
.figure {
  margin: 18px 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  position: relative;
  box-shadow: var(--sh-soft);
}
.figure img { width: 100%; height: auto; display: block; }
.figure figcaption {
  padding: 10px 14px;
  background: rgba(253,250,243,.85);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
}
.figure figcaption b { color: var(--ink); font-weight: 700; }

.figure-fallback {
  display: none;
  padding: 22px 26px 24px;
  background:
    radial-gradient(60% 80% at 30% 20%, rgba(255,156,110,.10) 0%, transparent 60%),
    radial-gradient(60% 80% at 80% 80%, rgba(181,156,245,.10) 0%, transparent 60%),
    var(--bg-soft);
  min-height: 140px;
}
.figure.no-image img { display: none; }
.figure.no-image .figure-fallback { display: block; }
.figure-fallback .ph-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .15em; text-transform: uppercase; color: var(--peach);
  margin-bottom: 6px; font-weight: 700;
}
.figure-fallback .ph-name {
  font-weight: 700; color: var(--ink); margin: 0 0 6px; font-size: 15px;
}
.figure-fallback .ph-prompt {
  font-size: 13.5px; line-height: 1.55; color: var(--ink-2);
  margin: 6px 0 10px;
}
.figure-fallback .ph-file {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  padding: 3px 9px; border-radius: 5px;
  background: var(--ink); color: var(--paper);
  letter-spacing: .04em;
}

/* === Финальный тест с оценкой === */
.final-test {
  margin: 26px 0;
  padding: 22px 24px;
  background: rgba(253,250,243,.7);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 18px;
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--sh-card);
  position: relative;
}
.final-test::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg,
    rgba(255,156,110,.40) 0%, rgba(255,255,255,0) 30%,
    rgba(181,156,245,.30) 65%, rgba(95,185,138,.35) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.ft-tag {
  display: inline-flex; gap: 6px; align-items: center;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .16em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-weight: 700;
}
.ft-title {
  margin: 12px 0 6px;
  font-size: 22px; font-weight: 700; letter-spacing: -.02em; color: var(--ink);
}
.ft-desc {
  margin: 0 0 18px; color: var(--ink-3); font-size: 14px;
}
.ft-question {
  margin: 14px 0;
  padding: 14px 16px;
  background: rgba(255,255,255,.55);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.ft-question.is-correct {
  background: linear-gradient(135deg, rgba(196,238,220,.45), rgba(253,250,243,.85));
  border-color: var(--mint);
}
.ft-question.is-wrong {
  background: linear-gradient(135deg, rgba(255,200,166,.35), rgba(253,250,243,.85));
  border-color: var(--peach);
}
.ft-q-num {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .14em; color: var(--ink-3); font-weight: 700;
}
.ft-q-text {
  margin: 5px 0 12px;
  font-size: 15.5px; font-weight: 600; color: var(--ink); line-height: 1.4;
}
.ft-options { display: grid; gap: 6px; }
.ft-options label {
  display: grid; grid-template-columns: 22px 1fr;
  gap: 10px; align-items: start;
  padding: 9px 12px; border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.5);
  cursor: pointer;
  transition: background .15s, border-color .15s;
  font-size: 14px; color: var(--ink-2);
}
.ft-options label:hover { background: rgba(255,255,255,.85); }
.ft-options input { margin: 4px 0 0; accent-color: var(--ink); }
.ft-question.is-correct .ft-options label.is-chosen {
  background: rgba(196,238,220,.5); border-color: var(--mint);
}
.ft-question.is-correct .ft-options label.is-chosen::after {
  content: ' ✓'; color: var(--mint); font-weight: 700;
}
.ft-question.is-wrong .ft-options label.is-chosen {
  background: rgba(255,200,166,.45); border-color: var(--peach);
}
.ft-question.is-wrong .ft-options label.is-chosen::after {
  content: ' ✕'; color: var(--peach); font-weight: 700;
}
.ft-question.is-wrong .ft-options label.is-correct {
  background: rgba(196,238,220,.30); border-color: var(--mint);
  border-style: dashed;
}
.ft-question.is-wrong .ft-options label.is-correct::after {
  content: ' — правильный ответ';
  color: var(--mint); font-size: 12px; font-style: italic;
}
.ft-explain {
  display: none;
  margin-top: 10px; padding: 10px 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px; line-height: 1.55; color: var(--ink-2);
}
.ft-question.is-correct .ft-explain,
.ft-question.is-wrong .ft-explain { display: block; }
.ft-explain b { color: var(--ink); }

.ft-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.ft-submit {
  padding: 9px 18px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-family: inherit; font-size: 14px; font-weight: 600;
  border: 0; cursor: pointer;
  transition: transform .15s var(--ease);
}
.ft-submit:hover { transform: translateY(-1px); }
.ft-reset {
  padding: 9px 18px; border-radius: 999px;
  background: transparent; color: var(--ink);
  font-family: inherit; font-size: 14px; font-weight: 600;
  border: 1px solid var(--line-2); cursor: pointer;
  display: none;
}
.final-test.is-graded .ft-submit { display: none; }
.final-test.is-graded .ft-reset { display: inline-block; }

.ft-result {
  display: none;
  margin-top: 18px; padding: 18px 22px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,156,110,.18), rgba(181,156,245,.12), rgba(95,185,138,.18));
  border: 1px solid rgba(255,255,255,.7);
}
.final-test.is-graded .ft-result { display: block; }
.ft-score-row {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 8px; flex-wrap: wrap;
}
.ft-score {
  font-size: 36px; font-weight: 800; letter-spacing: -.02em; color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
}
.ft-score-total {
  font-size: 18px; color: var(--ink-3); font-family: 'JetBrains Mono', monospace;
}
.ft-grade {
  margin-left: auto;
  padding: 5px 12px; border-radius: 999px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
}
.ft-grade.excellent { background: var(--mint); color: var(--paper); }
.ft-grade.good      { background: var(--sun); color: #2b1d00; }
.ft-grade.average   { background: var(--peach); color: var(--paper); }
.ft-grade.weak      { background: var(--cherry); color: var(--paper); }
.ft-message {
  font-size: 15px; color: var(--ink-2); line-height: 1.55; margin: 0;
}
.ft-message b { color: var(--ink); }

@media (max-width: 540px) {
  .ft-question { padding: 12px 14px; }
  .ft-options label { padding: 8px 10px; font-size: 13.5px; }
  .ft-score { font-size: 30px; }
}

/* === Test page: name, progress, group, certificate === */
.ft-name {
  display: grid; grid-template-columns: 180px 1fr;
  gap: 12px; align-items: center;
  margin: 14px 0 18px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px;
  background: rgba(255,255,255,.55);
}
.ft-name label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 600;
}
.ft-name input {
  font-family: inherit; font-size: 15px;
  padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper);
  color: var(--ink); outline: none; width: 100%;
  transition: border-color .15s var(--ease);
}
.ft-name input:focus {
  border-color: var(--peach);
  box-shadow: 0 0 0 3px rgba(255,156,110,.12);
}
@media (max-width: 600px) { .ft-name { grid-template-columns: 1fr; gap: 4px; } }

.ft-progress {
  position: sticky; top: 70px; z-index: 40;
  margin: 6px 0 18px;
  padding: 10px 14px;
  background: rgba(253,250,243,.92);
  border: 1px solid var(--line); border-radius: 12px;
  backdrop-filter: blur(12px);
  display: flex; align-items: center; gap: 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--ink-2);
}
.ft-progress .pn { font-weight: 700; color: var(--ink); }
.ft-progress .pbar {
  flex: 1; height: 6px; border-radius: 999px;
  background: rgba(22,21,19,.06); overflow: hidden;
}
.ft-progress .pbar > div {
  height: 100%; width: 0%; border-radius: 999px;
  background: var(--grad-peach-lav);
  transition: width .25s var(--ease);
}

.ft-group { margin: 18px 0 10px; }
.ft-group-head {
  display: flex; align-items: center; gap: 10px;
  margin: 14px 0 8px;
  padding-bottom: 6px; border-bottom: 1px dashed var(--line);
}
.ft-group-num {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  padding: 3px 9px; border-radius: 5px;
  background: var(--ink); color: var(--paper);
  letter-spacing: .08em; font-weight: 700;
}
.ft-group-title {
  font-size: 15px; font-weight: 600; color: var(--ink); letter-spacing: -.012em;
}
.ft-group-count {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--ink-3);
}

/* Сертификат после прохождения */
.cert {
  margin-top: 18px; padding: 28px 30px 26px;
  border-radius: 18px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(255,156,110,.16), transparent 55%),
    radial-gradient(120% 80% at 100% 100%, rgba(181,156,245,.14), transparent 55%),
    var(--paper);
  border: 1px solid rgba(255,255,255,.7);
  box-shadow: var(--sh-card);
  position: relative;
  overflow: hidden;
}
.cert::before {
  content: ''; position: absolute; inset: 0;
  border-radius: inherit; padding: 1.5px;
  background: linear-gradient(135deg,
    rgba(255,156,110,.55) 0%, rgba(255,200,166,.20) 30%,
    rgba(181,156,245,.40) 65%, rgba(95,185,138,.45) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.cert-head {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  border-bottom: 1px solid var(--line); padding-bottom: 10px;
  margin-bottom: 14px;
}
.cert-stamp {
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .18em; text-transform: uppercase; color: var(--peach);
  font-weight: 700;
}
.cert-org {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--ink-3); letter-spacing: .04em;
}
.cert-name {
  font-size: 28px; font-weight: 700; letter-spacing: -.02em;
  color: var(--ink); line-height: 1.15; margin: 0 0 4px;
}
.cert-name em {
  font-style: normal;
  background: var(--grad-peach-lav);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cert-sub {
  font-size: 14.5px; color: var(--ink-2); margin: 0 0 18px;
}
.cert-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; margin: 16px 0 18px;
}
@media (max-width: 640px) { .cert-grid { grid-template-columns: 1fr 1fr; } }
.cert-cell {
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(253,250,243,.7);
  border: 1px solid var(--line);
}
.cert-cell .k {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
  font-weight: 600;
}
.cert-cell .v {
  font-size: 16px; font-weight: 700; color: var(--ink); margin-top: 4px;
  letter-spacing: -.01em;
}
.cert-cell.score .v {
  font-family: 'JetBrains Mono', monospace; font-size: 22px;
}
.cert-rank {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
}
.cert-rank.senior   { background: var(--mint);    color: var(--paper); }
.cert-rank.middle   { background: var(--sun);     color: #2b1d00; }
.cert-rank.junior   { background: var(--peach);   color: var(--paper); }
.cert-rank.trainee  { background: var(--cherry);  color: var(--paper); }
.cert-msg {
  font-size: 14.5px; color: var(--ink-2); line-height: 1.55;
  margin: 0; max-width: 60ch;
}
.cert-msg b { color: var(--ink); }
.cert-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-top: 16px; padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.cert-btn {
  padding: 8px 16px; border-radius: 999px;
  font-family: inherit; font-size: 13px; font-weight: 600;
  background: var(--ink); color: var(--paper);
  border: 0; cursor: pointer;
  transition: transform .15s var(--ease);
}
.cert-btn:hover { transform: translateY(-1px); }
.cert-btn.ghost {
  background: transparent; color: var(--ink); border: 1px solid var(--line-2);
}
.cert-foot {
  margin-top: 18px; padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap;
}
.cert-sign {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--ink-2);
}
.cert-sign b { color: var(--ink); font-weight: 700; letter-spacing: .02em; }

/* Подсказка «вернись к разделу» рядом с неверным вопросом */
.ft-question .ft-hint {
  display: none;
  margin-top: 8px; padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-size: 13px; color: var(--ink-2);
}
.ft-question.is-wrong .ft-hint { display: block; }
.ft-hint a {
  color: var(--ink); border-bottom: 1px dashed var(--peach); font-weight: 500;
}
.ft-hint a:hover { color: var(--peach); }

/* === Video embed: lite-facade (превью → iframe по клику) === */
.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  margin: 14px 0;
  background: #1a1815;
  border: 1px solid rgba(255,255,255,.6);
  box-shadow: var(--sh-card);
}
.video-embed iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0;
}
.lite-yt {
  position: relative; display: block;
  width: 100%; height: 100%;
  padding: 0; border: 0; cursor: pointer;
  background: #1a1815; color: #f4eee4;
  font-family: inherit;
  text-decoration: none;
  overflow: hidden;
}
.lite-yt::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg,
    rgba(0,0,0,.50) 0%, rgba(0,0,0,0) 28%,
    rgba(0,0,0,0) 60%, rgba(0,0,0,.55) 100%);
  z-index: 2; pointer-events: none;
}
.lite-yt img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s var(--ease), filter .25s var(--ease);
}
.lite-yt:hover img { transform: scale(1.03); filter: brightness(1.08); }
.lite-yt-play {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 88px; height: 62px;
  z-index: 3;
  filter: drop-shadow(0 6px 14px rgba(0,0,0,.45));
  transition: transform .2s var(--ease);
}
.lite-yt:hover .lite-yt-play { transform: translate(-50%, -50%) scale(1.06); }
.lite-yt-tag {
  position: absolute; left: 16px; top: 16px;
  z-index: 3;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: .14em; text-transform: uppercase;
  background: rgba(0,0,0,.55); color: #fff;
  padding: 4px 10px; border-radius: 999px;
  backdrop-filter: blur(8px);
}
.lite-yt-title {
  position: absolute; left: 18px; right: 18px; bottom: 14px;
  z-index: 3;
  color: #fff; font-size: 16px; font-weight: 600;
  letter-spacing: -.01em; line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0,0,0,.6);
}
.video-meta {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-top: 10px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  color: var(--ink-3);
}
.video-meta b { color: var(--ink); font-weight: 600; }
.video-note {
  margin-top: 12px;
  padding: 10px 14px;
  border-left: 3px solid var(--ink-4);
  background: rgba(253,250,243,.5);
  border-radius: 0 10px 10px 0;
  font-size: 13px; color: var(--ink-3);
  display: none;
}
/* Показываем подсказку про file:// — JS включит при необходимости */
.video-note.is-shown { display: block; }

/* CTA-banner — большая ссылка на тест с pipeline.html и др. */
.cta-banner {
  display: grid; grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto; gap: 4px 16px;
  align-items: center;
  margin: 22px 0 8px;
  padding: 18px 22px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(255,156,110,.15), transparent 60%),
    radial-gradient(120% 80% at 100% 100%, rgba(181,156,245,.13), transparent 60%),
    var(--paper);
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 16px;
  box-shadow: var(--sh-soft);
  text-decoration: none; color: inherit;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.cta-banner:hover { transform: translateY(-2px); box-shadow: var(--sh-card); }
.cta-banner .cta-tag {
  grid-column: 1; grid-row: 1;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--peach);
  font-weight: 700;
}
.cta-banner .cta-title {
  grid-column: 1 / span 2; grid-row: 2;
  font-size: 19px; font-weight: 700; color: var(--ink); letter-spacing: -.015em;
}
.cta-banner .cta-desc {
  grid-column: 2; grid-row: 1;
  font-size: 13.5px; color: var(--ink-3);
}
.cta-banner .cta-arrow {
  grid-column: 3; grid-row: 1 / span 2;
  align-self: center;
  padding: 8px 16px; border-radius: 999px;
  background: var(--ink); color: var(--paper);
  font-weight: 600; font-size: 13.5px;
  white-space: nowrap;
}
@media (max-width: 700px) {
  .cta-banner { grid-template-columns: 1fr; }
  .cta-banner .cta-tag, .cta-banner .cta-title,
  .cta-banner .cta-desc, .cta-banner .cta-arrow {
    grid-column: 1; grid-row: auto;
  }
  .cta-banner .cta-arrow { justify-self: start; }
}

/* === Стабы для классов-обёрток (используются в HTML) === */
.hero-left { min-width: 0; }
.search-empty { font-style: italic; }

/* === Лёгкие фиксы для верстки === */
/* Не разносить блок если контент очень узкий */
.hero-grid > .hero-left > .lead {
  word-break: break-word;
}
/* Hero-art: если картинка в figure, фиксируем структуру */
.hero-art.figure { box-shadow: var(--sh-hero); border-radius: 22px; }
.hero-art.figure img { aspect-ratio: 16 / 10.5; }
/* Tooltip: на узких экранах не вылетал за край */
@media (max-width: 540px) {
  .term::after { max-width: 240px; }
}