/* ============================================================
   APMcheck — design system (dark, tech, premium)
   Vanilla CSS. Общий для всех страниц сайта.
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --bg:        #080b11;
  --bg-2:      #0c1018;
  --surface:   #11161f;
  --surface-2: #161c27;
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.14);

  --txt:       #eef3f8;
  --txt-2:     #9aa7b8;
  --txt-3:     #5d6979;

  --brand:     #18a0fb;
  --brand-2:   #22d3ff;
  --brand-ink: #0a1622;
  --grad:      linear-gradient(135deg, #18a0fb 0%, #22d3ff 100%);
  --grad-soft: linear-gradient(135deg, rgba(24,160,251,.16), rgba(34,211,255,.06));
  --ok:        #2ee6a0;

  --r-sm: 10px;
  --r:    16px;
  --r-lg: 22px;
  --r-xl: 30px;

  --shadow:   0 24px 60px -20px rgba(0,0,0,.6);
  --glow:     0 0 0 1px rgba(34,211,255,.25), 0 20px 60px -16px rgba(24,160,251,.45);

  --maxw: 1180px;
  --gap:  clamp(16px, 3vw, 28px);

  --ff:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ff-h:  "Manrope", var(--ff);
}

/* ---------- reset ---------- */
*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff);
  background: var(--bg);
  color: var(--txt);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: 2px solid var(--brand-2); outline-offset: 3px; border-radius: 4px; }

/* ---------- ambient background ---------- */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 50% at 78% -5%, rgba(24,160,251,.16), transparent 60%),
    radial-gradient(50% 45% at 8% 8%, rgba(34,211,255,.10), transparent 55%),
    var(--bg);
}

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
section { position: relative; }
.sec { padding-block: clamp(64px, 9vw, 120px); }
.sec-tight { padding-block: clamp(44px, 6vw, 80px); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ff-h);
  font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--brand-2);
  padding: 7px 14px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--grad-soft);
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--brand-2); box-shadow: 0 0 12px var(--brand-2); }

h1,h2,h3 { font-family: var(--ff-h); font-weight: 800; line-height: 1.08; letter-spacing: -.02em; }
h1 { font-size: clamp(38px, 6vw, 68px); }
h2 { font-size: clamp(30px, 4.4vw, 50px); }
h3 { font-size: clamp(20px, 2.4vw, 26px); letter-spacing: -.01em; }
.lead { font-size: clamp(17px, 2vw, 21px); color: var(--txt-2); max-width: 60ch; }
.muted { color: var(--txt-2); }
.grad-txt { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.sec-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 60px); }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head .eyebrow { margin-bottom: 20px; }
.sec-head p { margin-top: 18px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--ff-h); font-weight: 700; font-size: 16px;
  padding: 15px 26px; border-radius: 999px;
  transition: transform .25s cubic-bezier(.2,.7,.3,1), box-shadow .25s, background .25s, border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad); color: var(--brand-ink); box-shadow: 0 10px 30px -10px rgba(24,160,251,.6); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow); }
.btn-ghost { border: 1px solid var(--line-2); color: var(--txt); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--brand-2); background: rgba(34,211,255,.06); transform: translateY(-2px); }
.btn-lg { padding: 18px 32px; font-size: 17px; }

/* ---------- header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 100;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.hdr.scrolled { background: rgba(8,11,17,.78); backdrop-filter: blur(14px); border-bottom-color: var(--line); }
.hdr__in { display: flex; align-items: center; gap: 24px; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 11px; font-family: var(--ff-h); font-weight: 800; font-size: 21px; letter-spacing: -.02em; }
.logo__mark { width: 34px; height: 34px; flex-shrink: 0; }
.logo b { font-weight: 800; }
.logo span { color: var(--brand-2); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { padding: 9px 14px; border-radius: 999px; font-size: 15px; font-weight: 600; color: var(--txt-2); transition: color .2s, background .2s; }
.nav a:hover, .nav a.active { color: var(--txt); background: rgba(255,255,255,.05); }
.hdr .btn { margin-left: 8px; padding: 11px 20px; font-size: 15px; }

.burger { display: none; width: 44px; height: 44px; margin-left: auto; border-radius: 12px; border: 1px solid var(--line-2); position: relative; }
.burger span { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--txt); border-radius: 2px; transition: .3s; }
.burger span:nth-child(1) { top: 15px; } .burger span:nth-child(2) { top: 21px; } .burger span:nth-child(3) { top: 27px; }
body.menu-open .burger span:nth-child(1) { top: 21px; transform: rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- cards ---------- */
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px;
  transition: transform .3s cubic-bezier(.2,.7,.3,1), border-color .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-2); box-shadow: var(--shadow); }
.card__icn { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--grad-soft); border: 1px solid var(--line-2); margin-bottom: 20px; color: var(--brand-2); }
.card__icn svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--txt-2); font-size: 16px; }

.grid { display: grid; gap: var(--gap); }
.g-2 { grid-template-columns: repeat(2,1fr); }
.g-3 { grid-template-columns: repeat(3,1fr); }
.g-4 { grid-template-columns: repeat(4,1fr); }

/* ---------- split (text + media), shared across pages ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 60px); align-items: center; }
.split.rev .split__media { order: -1; }
.split .eyebrow { margin-bottom: 18px; }
.split h2 + .lead, .split .lead { margin-top: 18px; }

.feat-list { display: grid; gap: 14px; margin-top: 26px; }
.feat-list li { display: flex; gap: 13px; align-items: flex-start; }
.feat-list .ic { width: 30px; height: 30px; border-radius: 9px; background: var(--grad-soft); border: 1px solid var(--line-2); display: grid; place-items: center; color: var(--brand-2); flex-shrink: 0; }
.feat-list .ic svg { width: 16px; height: 16px; }
.feat-list b { font-family: var(--ff-h); display: block; font-size: 16px; }
.feat-list span { color: var(--txt-2); font-size: 15px; }

.panel { background: linear-gradient(180deg, var(--surface), var(--bg-2)); border: 1px solid var(--line); border-radius: var(--r-xl); padding: clamp(22px, 3vw, 34px); box-shadow: var(--shadow); }

/* ---------- reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.3,1); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-d="1"] { transition-delay: .08s; }
[data-reveal][data-d="2"] { transition-delay: .16s; }
[data-reveal][data-d="3"] { transition-delay: .24s; }
[data-reveal][data-d="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---------- footer ---------- */
.ftr { border-top: 1px solid var(--line); padding-block: 56px 32px; margin-top: 40px; }
.ftr__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.ftr__top h4 { font-family: var(--ff-h); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--txt-3); margin-bottom: 16px; }
.ftr__col a { display: block; color: var(--txt-2); font-size: 15px; padding: 6px 0; transition: color .2s; }
.ftr__col a:hover { color: var(--brand-2); }
.ftr__about p { color: var(--txt-2); font-size: 15px; margin-top: 16px; max-width: 32ch; }
.ftr__bot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--txt-3); font-size: 14px; }
.ftr__bot a { color: var(--txt-3); } .ftr__bot a:hover { color: var(--txt-2); }

/* ---------- sub-page hero ---------- */
.phero { padding-block: clamp(48px, 7vw, 90px) clamp(8px, 2vw, 20px); }
.phero .crumbs { color: var(--txt-3); font-size: 14px; font-weight: 600; margin-bottom: 20px; }
.phero .crumbs a { color: var(--txt-2); } .phero .crumbs a:hover { color: var(--brand-2); }
.phero h1 { margin: 18px 0 0; max-width: 16ch; }
.phero .lead { margin-top: 22px; }
.phero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

/* ---------- prose (legal / text pages) ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: clamp(22px, 3vw, 30px); margin: 40px 0 14px; }
.prose h3 { font-size: 20px; margin: 28px 0 10px; }
.prose p, .prose li { color: var(--txt-2); font-size: 16px; }
.prose p { margin-bottom: 14px; }
.prose ul { display: grid; gap: 8px; margin: 0 0 18px; padding-left: 22px; list-style: disc; }
.prose ul li::marker { color: var(--brand-2); }
.prose a { color: var(--brand-2); text-decoration: underline; }
.prose strong { color: var(--txt); }

/* ---------- check-list (numbered / ticked steps) ---------- */
.checks { display: grid; gap: 14px; }
.checks li { display: flex; gap: 13px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; }
.checks li svg { width: 22px; height: 22px; color: var(--ok); flex-shrink: 0; margin-top: 1px; }
.checks b { font-family: var(--ff-h); display: block; font-size: 16px; margin-bottom: 2px; }
.checks span { color: var(--txt-2); font-size: 15px; }

/* ---------- pricing table ---------- */
.ptable-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); }
.ptable { width: 100%; border-collapse: collapse; min-width: 640px; }
.ptable th, .ptable td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
.ptable thead th { font-family: var(--ff-h); font-size: 14px; letter-spacing: .02em; color: var(--txt); background: var(--surface-2); position: sticky; top: 0; }
.ptable thead th:not(:first-child), .ptable td:not(:first-child) { text-align: center; white-space: nowrap; }
.ptable tbody th { font-weight: 600; color: var(--txt); }
.ptable td { color: var(--txt-2); }
.ptable tbody tr:hover { background: rgba(255,255,255,.02); }
.ptable .grp td { background: var(--bg-2); font-family: var(--ff-h); font-weight: 700; color: var(--brand-2); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; }
.ptable .price { font-family: var(--ff-h); font-weight: 700; color: var(--txt); }
.ptable .free { color: var(--ok); font-weight: 700; }

/* ---------- faq ---------- */
.faq { display: grid; gap: 12px; max-width: 820px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 4px 20px; }
.faq summary { cursor: pointer; font-family: var(--ff-h); font-weight: 700; font-size: 17px; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 24px; color: var(--brand-2); transition: transform .25s; line-height: 1; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--txt-2); font-size: 15px; padding: 0 0 18px; }

/* ---------- final CTA band (shared) ---------- */
.ctaband { background: var(--grad-soft); border: 1px solid var(--line-2); border-radius: var(--r-xl); padding: clamp(34px, 5vw, 64px); text-align: center; }
.ctaband h2 { max-width: 18ch; margin: 0 auto 14px; }
.ctaband p { color: var(--txt-2); max-width: 52ch; margin: 0 auto; }
.ctaband .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

/* ---------- mobile ---------- */
@media (max-width: 920px) {
  .nav, .hdr > .wrap > .hdr__in > .btn { display: none; }
  .burger { display: block; }
  .ftr__top { grid-template-columns: 1fr 1fr; }
  .g-4 { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .split, .split.rev { grid-template-columns: 1fr; }
  .split.rev .split__media { order: 0; }
  .ftr__top { grid-template-columns: 1fr; gap: 24px; }

  /* mobile nav panel */
  .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 6px;
    position: fixed; inset: 72px 0 auto 0;
    background: rgba(8,11,17,.97); backdrop-filter: blur(16px);
    padding: 18px 22px 26px; margin: 0;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%); transition: transform .35s cubic-bezier(.2,.7,.3,1);
    max-height: calc(100dvh - 72px); overflow-y: auto;
  }
  body.menu-open .nav { transform: none; }
  .nav a { padding: 13px 16px; font-size: 17px; border-radius: 12px; }
  .nav .btn { display: inline-flex; margin: 8px 0 0; }
}