/* =========================================================================
   Happ satellite — единый лист стилей
   Секции: TOKENS · BASE · LAYOUT · COMPONENTS · MODULES · UTILITIES
   Тёмная тема с собственной айдентикой (не копия конкурента).
   Анимации только transform/opacity, уважают prefers-reduced-motion.
   ========================================================================= */

/* =========================================================================
   1. TOKENS
   ========================================================================= */
:root {
  /* Фон */
  --bg:            #0b0f14;   /* глубокий сине-графит */
  --bg-elev:       #121821;   /* карточки */
  --bg-elev-2:     #18202b;   /* всплывающие / hover */
  --bg-glass:      rgba(18, 24, 33, .72);

  /* Текст */
  --text:          #e6edf3;
  --text-muted:    #9fb0c0;
  --text-dim:      #6b7d8f;

  /* Акцент — фирменный */
  --accent:        #3ddc97;   /* мятно-зелёный: «скорость/безопасность» */
  --accent-2:      #4aa8ff;   /* холодный синий, вторичный */
  --accent-ink:    #06251a;   /* текст на акцентной кнопке */
  --accent-grad:   linear-gradient(135deg, var(--accent), var(--accent-2));
  --accent-soft:   rgba(61, 220, 151, .12);
  --accent-2-soft: rgba(74, 168, 255, .12);

  /* Статусы */
  --ok:            #3ddc97;
  --warn:          #ffcc55;
  --err:           #ff6b6b;

  /* Служебное */
  --border:        rgba(255, 255, 255, .08);
  --border-strong: rgba(255, 255, 255, .14);
  --radius:        14px;
  --radius-sm:     10px;
  --radius-lg:     20px;
  --shadow:        0 8px 30px rgba(0, 0, 0, .35);
  --shadow-lg:     0 24px 60px rgba(0, 0, 0, .45);
  --glow:          0 0 0 1px rgba(61, 220, 151, .25), 0 10px 40px rgba(61, 220, 151, .18);
  --maxw:          1120px;

  /* Типографика */
  --font-sans: "Inter", "Manrope", system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code",
               Consolas, "Liberation Mono", Menlo, monospace;

  /* Вертикальный ритм (8px-сетка) */
  --space-1: .5rem;   /*  8px */
  --space-2: 1rem;    /* 16px */
  --space-3: 1.5rem;  /* 24px */
  --space-4: 2rem;    /* 32px */
  --space-5: 3rem;    /* 48px */
  --space-6: 4rem;    /* 64px */
  --space-7: 6rem;    /* 96px */

  --header-h: 64px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* =========================================================================
   2. BASE / RESET
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(1100px 520px at 78% -8%, rgba(74, 168, 255, .10), transparent 60%),
    radial-gradient(900px 500px at 10% 4%, rgba(61, 220, 151, .09), transparent 55%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-synthesis-weight: none;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
svg { fill: currentColor; }

a { color: inherit; text-decoration: none; }
a:not([class]) { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:not([class]):hover { color: var(--accent-2); }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

ul, ol { padding: 0; list-style: none; }

h1, h2, h3, h4 { line-height: 1.15; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: clamp(1.15rem, 1.7vw, 1.4rem); }

p { text-wrap: pretty; }
:where(h1, h2, h3, h4) { text-wrap: balance; }

::selection { background: var(--accent); color: var(--accent-ink); }

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

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--accent); color: var(--accent-ink);
  padding: .6rem 1rem; border-radius: 0 0 var(--radius-sm) 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================================
   3. LAYOUT
   ========================================================================= */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--space-3); }

.section { padding-block: var(--space-6); }
.section--tight { padding-block: var(--space-5); }
.section + .section { padding-top: 0; }

main { display: block; }

.grid { display: grid; gap: var(--space-3); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
@media (max-width: 860px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.stack > * + * { margin-top: var(--space-2); }
.prose { max-width: 68ch; }
.prose > * + * { margin-top: var(--space-2); }
.prose h2 { margin-top: var(--space-4); }
.prose h3 { margin-top: var(--space-3); }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose ul { list-style: none; }
.prose li { position: relative; padding-left: 1.5rem; }
.prose li::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-grad);
}

.icon { width: 1.25em; height: 1.25em; flex: none; }

/* сетка «сайдбар + контент» для шаблона D */
.with-aside { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: var(--space-4); align-items: start; }
.with-aside__aside { position: sticky; top: calc(var(--header-h) + 16px); }
@media (max-width: 960px) { .with-aside { grid-template-columns: 1fr; } .with-aside__aside { position: static; } }

/* =========================================================================
   4. COMPONENTS
   ========================================================================= */

/* --- Header ------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.site-header[data-scrolled="true"] { border-bottom-color: var(--border); }
.site-header__inner {
  display: flex; align-items: center; gap: var(--space-3);
  height: var(--header-h);
}
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 800; letter-spacing: -.03em; font-size: 1.15rem; }
.brand__mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: var(--accent-grad);
  display: grid; place-items: center; color: var(--accent-ink);
  box-shadow: 0 4px 14px rgba(61, 220, 151, .35);
}
.brand__mark svg { width: 18px; height: 18px; }
.brand b { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.nav { display: flex; align-items: center; gap: .25rem; margin-left: auto; }
.nav a {
  padding: .5rem .7rem; border-radius: var(--radius-sm); color: var(--text-muted);
  font-size: .93rem; font-weight: 500; transition: color .2s, background .2s;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--bg-elev); }
.header-cta { margin-left: .5rem; }

.burger {
  display: none; margin-left: auto;
  width: 42px; height: 42px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-elev);
  place-items: center;
}
.burger svg { width: 22px; height: 22px; }

@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .burger { display: grid; }
}

/* --- Mobile nav --------------------------------------------------------- */
.mobile-nav {
  position: fixed; inset: 0; z-index: 150;
  background: rgba(6, 9, 13, .6);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s;
}
.mobile-nav[data-open="true"] { opacity: 1; visibility: visible; }
.mobile-nav__panel {
  position: absolute; top: 0; right: 0; height: 100%; width: min(88vw, 340px);
  background: var(--bg-elev); border-left: 1px solid var(--border);
  padding: var(--space-3); overflow-y: auto;
  transform: translateX(100%); transition: transform .3s var(--ease);
  display: flex; flex-direction: column; gap: .25rem;
}
.mobile-nav[data-open="true"] .mobile-nav__panel { transform: none; }
.mobile-nav__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-2); }
.mobile-nav__panel a { padding: .7rem .5rem; border-radius: var(--radius-sm); color: var(--text-muted); font-weight: 500; }
.mobile-nav__panel a:hover, .mobile-nav__panel a[aria-current="page"] { color: var(--text); background: var(--bg-elev-2); }
.mobile-nav__group { margin-top: var(--space-2); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); padding: .3rem .5rem; }
.icon-btn { width: 42px; height: 42px; border-radius: var(--radius-sm); border: 1px solid var(--border); display: grid; place-items: center; color: var(--text-muted); }
.icon-btn:hover { color: var(--text); background: var(--bg-elev-2); }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.3rem; border-radius: var(--radius-sm);
  font-weight: 650; font-size: .98rem; line-height: 1; text-align: center;
  border: 1px solid transparent; transition: transform .18s var(--ease), box-shadow .25s, background .2s, border-color .2s;
  will-change: transform;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 1.15em; height: 1.15em; }

.btn--primary {
  background: var(--accent-grad); color: var(--accent-ink);
  box-shadow: 0 6px 22px rgba(61, 220, 151, .28);
}
.btn--primary:hover { box-shadow: var(--glow); transform: translateY(-1px); }

.btn--ghost { background: var(--bg-elev); color: var(--text); border-color: var(--border-strong); }
.btn--ghost:hover { background: var(--bg-elev-2); border-color: var(--accent); }

.btn--lg { padding: 1rem 1.6rem; font-size: 1.05rem; }
.btn--block { display: flex; width: 100%; }

/* --- Badges & chips ----------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .32rem .7rem; border-radius: 999px; font-size: .82rem; font-weight: 600;
  background: var(--bg-elev); border: 1px solid var(--border); color: var(--text-muted);
}
.badge--ok { color: var(--ok); border-color: rgba(61, 220, 151, .35); background: var(--accent-soft); }
.badge svg { width: 1em; height: 1em; }
.badge-row { display: flex; flex-wrap: wrap; gap: .5rem; }

.kicker {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent);
}
.kicker::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--accent-grad); }

/* --- SectionHeader ------------------------------------------------------ */
.section-header { max-width: 60ch; margin-bottom: var(--space-4); }
.section-header .kicker { margin-bottom: var(--space-1); }
.section-header p { color: var(--text-muted); margin-top: var(--space-1); }
.section-header--center { margin-inline: auto; text-align: center; }

/* --- Breadcrumbs -------------------------------------------------------- */
.breadcrumbs { padding-top: var(--space-3); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; font-size: .86rem; color: var(--text-dim); }
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: .45rem; color: var(--text-dim); }
.breadcrumbs [aria-current="page"] { color: var(--text-muted); }

/* --- Cards -------------------------------------------------------------- */
.card {
  position: relative; background: var(--bg-elev);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: var(--space-3);
}
.card--pad-lg { padding: var(--space-4); }
.card--hover { transition: transform .2s var(--ease), border-color .2s, box-shadow .25s; }
.card--hover:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow); }

/* карточка-анонс (витрина кластера) */
.link-card { display: flex; flex-direction: column; gap: .5rem; color: inherit; }
.link-card__icon { width: 42px; height: 42px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(61,220,151,.2); }
.link-card__icon svg { width: 22px; height: 22px; }
.link-card h3 { font-size: 1.1rem; }
.link-card p { color: var(--text-muted); font-size: .92rem; }
.link-card__more { margin-top: auto; padding-top: .4rem; color: var(--accent); font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: .3rem; }
.link-card:hover .link-card__more svg { transform: translateX(3px); }
.link-card__more svg { width: 1em; height: 1em; transition: transform .2s var(--ease); }

/* ценностная карточка */
.value-card .link-card__icon { background: var(--accent-2-soft); color: var(--accent-2); border-color: rgba(74,168,255,.2); }

/* --- Callout ------------------------------------------------------------ */
.callout {
  display: flex; gap: .9rem; padding: var(--space-2) var(--space-3);
  border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--bg-elev); border-left: 3px solid var(--accent);
}
.callout__icon { flex: none; color: var(--accent); }
.callout__icon svg { width: 22px; height: 22px; }
.callout h4 { font-size: 1rem; margin-bottom: .2rem; }
.callout p { color: var(--text-muted); font-size: .93rem; }
.callout--warn { border-left-color: var(--warn); } .callout--warn .callout__icon { color: var(--warn); }
.callout--ok { border-left-color: var(--ok); } .callout--ok .callout__icon { color: var(--ok); }

/* --- StepList ----------------------------------------------------------- */
.steplist { counter-reset: step; display: grid; gap: var(--space-2); }
.steplist__item { position: relative; padding-left: 3.4rem; }
.steplist__item::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 2.4rem; height: 2.4rem; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700;
  background: var(--bg-elev-2); color: var(--accent);
  border: 1px solid var(--border-strong);
}
.steplist__item h4 { font-size: 1.05rem; margin-bottom: .2rem; }
.steplist__item p { color: var(--text-muted); font-size: .95rem; }

/* --- Table -------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: .93rem; min-width: 420px; }
table.data th, table.data td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--border); }
table.data thead th { color: var(--text-muted); font-weight: 600; background: var(--bg-elev); }
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:hover td { background: var(--bg-elev); }

/* --- FAQ accordion ------------------------------------------------------ */
.faq { display: grid; gap: .6rem; max-width: 820px; }
.faq details {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-elev); overflow: hidden; transition: border-color .2s;
}
.faq details[open] { border-color: var(--border-strong); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: var(--space-2) var(--space-3); font-weight: 600; cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .chev { flex: none; color: var(--text-muted); transition: transform .25s var(--ease); }
.faq details[open] summary .chev { transform: rotate(180deg); color: var(--accent); }
.faq__body { padding: 0 var(--space-3) var(--space-3); color: var(--text-muted); }
.faq__body > * + * { margin-top: .7rem; }

/* --- CTABanner ---------------------------------------------------------- */
.cta-banner {
  position: relative; overflow: hidden;
  border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  padding: var(--space-5);
  background:
    radial-gradient(600px 200px at 90% 0%, rgba(74,168,255,.16), transparent 60%),
    radial-gradient(500px 220px at 0% 100%, rgba(61,220,151,.16), transparent 60%),
    var(--bg-elev);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap;
}
.cta-banner h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.cta-banner p { color: var(--text-muted); margin-top: .4rem; max-width: 46ch; }
.cta-banner--narrow { padding: var(--space-3) var(--space-4); }
.cta-banner__actions { display: flex; gap: .7rem; flex-wrap: wrap; }

/* --- OfferCard ---------------------------------------------------------- */
.offer {
  border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--bg-elev-2), var(--bg-elev));
  padding: var(--space-3); box-shadow: var(--shadow);
}
.offer__price { display: flex; align-items: baseline; gap: .4rem; margin: .3rem 0 .2rem; }
.offer__price b { font-size: 2rem; letter-spacing: -.03em; }
.offer__price span { color: var(--text-dim); text-decoration: line-through; font-size: 1rem; }
.offer__slot { color: var(--text-dim); font-size: .82rem; }
.offer ul { display: grid; gap: .55rem; margin: var(--space-2) 0; }
.offer li { display: flex; gap: .55rem; align-items: flex-start; font-size: .93rem; color: var(--text-muted); }
.offer li svg { width: 1.1em; height: 1.1em; color: var(--accent); flex: none; margin-top: .15em; }
.offer__proof { display: flex; align-items: center; gap: .5rem; font-size: .84rem; color: var(--text-muted); margin-top: var(--space-2); }
.offer__pay { display: flex; gap: .4rem; flex-wrap: wrap; margin-top: .8rem; }
.offer__pay .badge { font-size: .74rem; padding: .25rem .55rem; }

/* --- RelatedLinks / «часто ищут» ---------------------------------------- */
.related { display: grid; gap: .6rem; }
.related__list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .6rem; }
.related__item {
  display: flex; align-items: center; gap: .7rem; padding: .8rem 1rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev);
  color: var(--text-muted); font-weight: 500; transition: border-color .2s, color .2s, transform .2s var(--ease);
}
.related__item:hover { color: var(--text); border-color: var(--accent); transform: translateX(2px); }
.related__item svg { width: 1.1em; height: 1.1em; color: var(--accent); flex: none; }

/* --- Footer ------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border); margin-top: var(--space-6); background: rgba(0,0,0,.15); }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: var(--space-4); padding-block: var(--space-5); }
.site-footer__brand p { color: var(--text-muted); font-size: .9rem; margin-top: .7rem; max-width: 34ch; }
.footer-col h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); margin-bottom: .8rem; }
.footer-col a { display: block; color: var(--text-muted); font-size: .92rem; padding: .28rem 0; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.site-footer__bottom { border-top: 1px solid var(--border); padding-block: var(--space-3); display: flex; justify-content: space-between; gap: var(--space-2); flex-wrap: wrap; color: var(--text-dim); font-size: .85rem; }
.transliteration { color: var(--text-dim); font-size: .84rem; }
@media (max-width: 900px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } .site-footer__brand { grid-column: 1 / -1; } }
@media (max-width: 560px) { .site-footer__grid { grid-template-columns: 1fr; } }

/* --- Hero --------------------------------------------------------------- */
.hero { padding-top: var(--space-6); padding-bottom: var(--space-5); }
.hero__lead { color: var(--text-muted); font-size: clamp(1.05rem, 1.6vw, 1.2rem); max-width: 56ch; margin-top: var(--space-2); }
.hero__actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: var(--space-3); }
.hero__meta { display: flex; gap: 1.2rem; flex-wrap: wrap; margin-top: var(--space-3); color: var(--text-muted); font-size: .9rem; }
.hero__meta span { display: inline-flex; align-items: center; gap: .4rem; }
.hero__meta svg { width: 1.05em; height: 1.05em; color: var(--accent); }

/* =========================================================================
   5. MODULES (интерактивные острова IM-1 … IM-10)
   Все имеют работающий вид без JS (progressive enhancement).
   ========================================================================= */

/* --- общий каркас острова ---------------------------------------------- */
.island { position: relative; }
.island[hidden] { display: none; }

/* --- IM-1: детектор платформы ------------------------------------------ */
.platform-detect__note {
  display: none; align-items: center; gap: .5rem; margin-bottom: var(--space-2);
  padding: .7rem 1rem; border-radius: var(--radius-sm);
  background: var(--accent-soft); border: 1px solid rgba(61,220,151,.25); color: var(--text);
  font-size: .93rem;
}
.platform-detect[data-detected] .platform-detect__note { display: flex; }
.platform-detect__note svg { color: var(--accent); }
.platform-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .8rem; }
.platform-tab {
  display: flex; flex-direction: column; align-items: center; gap: .5rem; text-align: center;
  padding: var(--space-3) var(--space-2); border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text-muted);
  transition: border-color .2s, transform .2s var(--ease), color .2s;
}
.platform-tab:hover { color: var(--text); transform: translateY(-2px); }
.platform-tab[aria-current="true"], .platform-tab[data-active="true"] {
  border-color: var(--accent); color: var(--text); box-shadow: var(--glow);
}
.platform-tab svg { width: 30px; height: 30px; color: var(--accent); }
.platform-tab small { color: var(--text-dim); font-size: .78rem; }

/* --- IM-2: визард подключения (stepper) --------------------------------- */
.wizard__progress { height: 6px; border-radius: 999px; background: var(--bg-elev-2); overflow: hidden; margin-bottom: var(--space-3); }
.wizard__bar { height: 100%; width: 0; border-radius: 999px; background: var(--accent-grad); transition: width .35s var(--ease); }
.wizard__nav { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: var(--space-3); }
.wizard__navbtn {
  display: inline-flex; align-items: center; gap: .5rem; padding: .5rem .85rem;
  border-radius: 999px; border: 1px solid var(--border); background: var(--bg-elev);
  color: var(--text-muted); font-size: .88rem; font-weight: 600;
}
.wizard__navbtn[data-done="true"] { color: var(--accent); border-color: rgba(61,220,151,.3); }
.wizard__navbtn[aria-current="step"] { color: var(--text); border-color: var(--accent); box-shadow: var(--glow); }
.wizard__navbtn .dot { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-elev-2); font-size: .78rem; }
.wizard__navbtn[data-done="true"] .dot { background: var(--accent); color: var(--accent-ink); }
.wizard__steps { display: grid; gap: var(--space-2); }
.wizard.is-enhanced .wizard__step { display: none; }
.wizard.is-enhanced .wizard__step[data-active="true"] { display: block; animation: fade-up .35s var(--ease); }
.wizard__step { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-elev); padding: var(--space-3); }
.wizard__step-head { display: flex; align-items: center; gap: .7rem; margin-bottom: .6rem; }
.wizard__step-num { width: 2rem; height: 2rem; border-radius: 50%; background: var(--bg-elev-2); color: var(--accent); display: grid; place-items: center; font-weight: 700; flex: none; border: 1px solid var(--border-strong); }
.wizard__step p { color: var(--text-muted); }
.wizard__actions { display: flex; justify-content: space-between; gap: .7rem; margin-top: var(--space-3); }
.wizard.is-enhanced .wizard__actions { display: flex; }
.wizard__actions { display: none; }
@keyframes fade-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* --- IM-3: карта серверов ---------------------------------------------- */
.servers { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-3); align-items: start; }
@media (max-width: 760px) { .servers { grid-template-columns: 1fr; } }
.servers__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: .6rem; }
.server-node {
  display: flex; flex-direction: column; gap: .35rem; padding: .8rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev);
  color: var(--text-muted); text-align: left; transition: border-color .2s, transform .2s var(--ease);
}
.server-node:hover { transform: translateY(-2px); color: var(--text); }
.server-node[data-active="true"] { border-color: var(--accent); box-shadow: var(--glow); color: var(--text); }
.server-node__flag { font-size: 1.4rem; line-height: 1; }
.server-node__name { font-weight: 600; font-size: .92rem; }
.server-node__ping { font-size: .78rem; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.server-detail { border: 1px solid var(--border-strong); border-radius: var(--radius); background: var(--bg-elev-2); padding: var(--space-3); }
.server-detail__row { display: flex; justify-content: space-between; gap: 1rem; padding: .5rem 0; border-bottom: 1px solid var(--border); font-size: .92rem; }
.server-detail__row:last-child { border-bottom: none; }
.server-detail__row b { font-variant-numeric: tabular-nums; }
.server-detail__note { color: var(--text-dim); font-size: .8rem; margin-top: .7rem; }
.pulse { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(61,220,151,.5); animation: pulse 1.8s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(61,220,151,.5); } 70% { box-shadow: 0 0 0 8px rgba(61,220,151,0); } 100% { box-shadow: 0 0 0 0 rgba(61,220,151,0); } }

/* --- IM-4: квиз-подборщик ---------------------------------------------- */
.quiz { border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--bg-elev); padding: var(--space-4); max-width: 680px; }
.quiz__q { animation: fade-up .3s var(--ease); }
.quiz__q h3 { margin-bottom: var(--space-2); }
.quiz__options { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.quiz__option { padding: .9rem 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev-2); color: var(--text); font-weight: 600; text-align: left; transition: border-color .2s, transform .15s var(--ease); }
.quiz__option:hover { border-color: var(--accent); transform: translateY(-2px); }
.quiz__progress { color: var(--text-dim); font-size: .82rem; margin-bottom: var(--space-2); }
.quiz__result { text-align: center; animation: fade-up .35s var(--ease); }
.quiz__result .badge--ok { margin-bottom: var(--space-2); }
.quiz__result h3 { font-size: 1.4rem; }
.quiz__result p { color: var(--text-muted); margin: .5rem auto var(--space-3); max-width: 42ch; }
.quiz__restart { margin-top: var(--space-2); color: var(--text-muted); font-size: .88rem; text-decoration: underline; }

/* --- IM-5: диагност-трублшутер (дерево) --------------------------------- */
.tree { border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--bg-elev); padding: var(--space-4); max-width: 720px; }
.tree__q { animation: fade-up .3s var(--ease); }
.tree__q h3 { margin-bottom: var(--space-2); }
.tree__options { display: grid; gap: .6rem; }
.tree__option { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 1.1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev-2); color: var(--text); font-weight: 600; text-align: left; transition: border-color .2s, transform .15s var(--ease); }
.tree__option:hover { border-color: var(--accent); transform: translateX(3px); }
.tree__option svg { width: 1.1em; color: var(--text-dim); }
.tree__solution { animation: fade-up .35s var(--ease); }
.tree__solution .callout { margin-bottom: var(--space-2); }
.tree__path { font-size: .82rem; color: var(--text-dim); margin-bottom: var(--space-2); }
.tree__restart { color: var(--text-muted); font-size: .88rem; text-decoration: underline; }
/* без JS — раскрытый список веток */
.tree__fallback { display: grid; gap: .6rem; }
.tree.is-enhanced .tree__fallback { display: none; }

/* --- IM-6: демо функции (toggle) --------------------------------------- */
.demo { border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--bg-elev); padding: var(--space-4); }
.demo__apps { display: grid; gap: .6rem; margin-top: var(--space-2); }
.demo__app { display: flex; align-items: center; gap: .9rem; padding: .7rem .9rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-elev-2); }
.demo__app-icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--bg); color: var(--accent-2); flex: none; }
.demo__app-name { font-weight: 600; }
.demo__app-route { margin-left: auto; font-size: .82rem; color: var(--text-dim); display: flex; align-items: center; gap: .4rem; transition: color .2s; }
.demo__app[data-route="tunnel"] .demo__app-route { color: var(--accent); }
.demo__app[data-route="direct"] .demo__app-route { color: var(--warn); }
/* тумблер */
.toggle { position: relative; width: 46px; height: 26px; border-radius: 999px; background: var(--bg-elev-2); border: 1px solid var(--border-strong); flex: none; transition: background .2s; }
.toggle[aria-checked="true"] { background: var(--accent); border-color: var(--accent); }
.toggle::after { content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: transform .2s var(--ease); }
.toggle[aria-checked="true"]::after { transform: translateX(20px); }
.demo__legend { display: flex; gap: 1.2rem; flex-wrap: wrap; margin-top: var(--space-3); font-size: .84rem; color: var(--text-muted); }
.demo__legend span { display: inline-flex; align-items: center; gap: .4rem; }
.demo__dot { width: 9px; height: 9px; border-radius: 50%; }
.demo__dot--tunnel { background: var(--accent); } .demo__dot--direct { background: var(--warn); }
.demo__killswitch { display: flex; align-items: center; gap: 1rem; padding: var(--space-3); border: 1px dashed var(--border-strong); border-radius: var(--radius); margin-top: var(--space-2); transition: border-color .3s, background .3s; }
.demo__killswitch[data-state="blocked"] { border-color: var(--err); border-style: solid; background: rgba(255,107,107,.06); }

/* --- IM-7: копи-блок ---------------------------------------------------- */
.copyblock { border: 1px solid var(--border-strong); border-radius: var(--radius); background: #0a0e13; overflow: hidden; }
.copyblock__head { display: flex; align-items: center; justify-content: space-between; padding: .55rem .9rem; border-bottom: 1px solid var(--border); background: var(--bg-elev); }
.copyblock__label { font-size: .8rem; color: var(--text-muted); font-weight: 600; }
.copyblock__btn { display: inline-flex; align-items: center; gap: .4rem; padding: .4rem .7rem; border-radius: var(--radius-sm); border: 1px solid var(--border); color: var(--text-muted); font-size: .82rem; font-weight: 600; transition: color .2s, border-color .2s; }
.copyblock__btn:hover { color: var(--text); border-color: var(--accent); }
.copyblock__btn[data-copied="true"] { color: var(--accent); border-color: var(--accent); }
.copyblock__btn svg { width: 1em; height: 1em; }
.copyblock pre { margin: 0; padding: .9rem; overflow-x: auto; font-family: var(--font-mono); font-size: .82rem; color: #cfe6dc; line-height: 1.7; }
.copyblock code { word-break: break-all; }

/* --- IM-8: счётчики со scroll count-up ---------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--space-2); }
.stat { text-align: center; padding: var(--space-3) var(--space-2); border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-elev); }
.stat__num { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; letter-spacing: -.03em; font-variant-numeric: tabular-nums; min-width: 4ch; display: inline-block; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__label { color: var(--text-muted); font-size: .9rem; margin-top: .3rem; }

/* --- IM-9: сравнение протоколов ---------------------------------------- */
.compare { border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--bg-elev); padding: var(--space-4); }
.compare__switch { display: inline-flex; padding: .3rem; border-radius: 999px; background: var(--bg-elev-2); border: 1px solid var(--border); margin-bottom: var(--space-3); }
.compare__switch button { padding: .5rem 1.1rem; border-radius: 999px; font-weight: 600; font-size: .9rem; color: var(--text-muted); transition: color .2s; }
.compare__switch button[aria-pressed="true"] { background: var(--accent-grad); color: var(--accent-ink); }
.compare__rows { display: grid; gap: var(--space-2); }
.compare__row { display: grid; grid-template-columns: 130px 1fr; gap: 1rem; align-items: center; }
.compare__row > span:first-child { color: var(--text-muted); font-size: .9rem; }
.bar { height: 12px; border-radius: 999px; background: var(--bg-elev-2); overflow: hidden; position: relative; }
.bar__fill { height: 100%; border-radius: 999px; background: var(--accent-grad); width: 0; transition: width .6s var(--ease); }
.bar__fill--dim { background: linear-gradient(135deg, #4a5a6a, #384451); }
.compare__val { font-size: .82rem; color: var(--text-dim); font-variant-numeric: tabular-nums; }
@media (max-width: 560px) { .compare__row { grid-template-columns: 100px 1fr; } }

/* --- IM-10: таймер акции ------------------------------------------------ */
.timer { display: flex; align-items: center; gap: .5rem; }
.timer__unit { display: grid; place-items: center; min-width: 46px; padding: .4rem .3rem; border-radius: var(--radius-sm); background: var(--bg); border: 1px solid var(--border); }
.timer__num { font-size: 1.3rem; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; }
.timer__lbl { font-size: .66rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; margin-top: .2rem; }
.timer__sep { color: var(--text-dim); font-weight: 700; }

/* --- fallbacks / панели для прогрессивного улучшения -------------------- */
.platform-panels { margin-top: var(--space-2); }
.platform-panel { padding: var(--space-2) 0; border-top: 1px solid var(--border); }
.platform-panel h4 { margin-bottom: .3rem; }
.platform-panel p { color: var(--text-muted); }
.platform-detect.is-enhanced .platform-panel { display: none; }
.platform-detect.is-enhanced .platform-panel[data-active] { display: block; animation: fade-up .3s var(--ease); }
.server-fallback { display: grid; gap: .4rem; margin-top: var(--space-2); color: var(--text-muted); font-size: .92rem; grid-column: 1 / -1; }
.server-fallback li { display: flex; gap: .5rem; }
.servers.is-enhanced .server-fallback { display: none; }

/* =========================================================================
   6. UTILITIES
   ========================================================================= */
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-2 { margin-top: var(--space-2); } .mt-3 { margin-top: var(--space-3); } .mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); } .mb-3 { margin-bottom: var(--space-3); }
.flex { display: flex; } .items-center { align-items: center; } .gap-2 { gap: var(--space-2); } .wrap { flex-wrap: wrap; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.divider { height: 1px; background: var(--border); border: none; margin-block: var(--space-4); }
[hidden] { display: none !important; }