/* ============================================================
   Arx Werk — arxwerk.com
   Единственный файл стилей. Без внешних ресурсов, без JS.
   Тема: hi-fi минимализм — почти чёрный фон, янтарный акцент.
   ============================================================ */

:root {
  --bg:           #0c0c0e;
  --bg-raise:     #121215;
  --bg-raise-2:   #17171b;
  --line:         #26262c;
  --line-soft:    #1b1b20;
  --text:         #d9d9de;
  --text-bright:  #f2f2f4;
  --dim:          #94949d;
  --accent:       #e8a33d;
  --accent-bright:#f0b45c;
  --accent-ink:   #191104;
  --radius:       14px;
  --radius-lg:    20px;
}

/* ---------- База ---------- */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  margin: 0;
  color: var(--text-bright);
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 650;
}

p { margin: 0; }

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 44px, 1060px);
  margin-inline: auto;
}

.container-narrow {
  width: min(100% - 44px, 640px);
  margin-inline: auto;
}

/* ---------- Шапка ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(12, 12, 14, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text-bright);
  text-decoration: none;
  font-weight: 650;
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand-mark {
  width: 9px;
  height: 9px;
  background: var(--accent);
  border-radius: 2px;
  transform: rotate(45deg);
  flex: none;
}

.site-nav {
  display: flex;
  gap: clamp(14px, 3.5vw, 28px);
}

.site-nav a {
  color: var(--dim);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 4px 0;
  transition: color 0.18s;
}

.site-nav a:hover { color: var(--text-bright); }
.site-nav a[aria-current="page"] { color: var(--accent); }

/* ---------- Hero ---------- */

.hero {
  padding: clamp(64px, 12vw, 120px) 0 clamp(48px, 8vw, 88px);
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(232, 163, 61, 0.07), transparent 55%);
}

.kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.76rem;
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(2.6rem, 9vw, 4.4rem);
  letter-spacing: -0.025em;
  margin: 0.3em 0 0.35em;
}

.lead {
  font-size: clamp(1.05rem, 2.2vw, 1.22rem);
  color: var(--dim);
  max-width: 36em;
}

.hero-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  color: var(--dim);
  font-size: 0.92rem;
  max-width: 44em;
}

/* ---------- Кнопки ---------- */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 0.18s, border-color 0.18s, color 0.18s,
              transform 0.12s;
}

.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-bright); }

.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--text-bright); }

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.cta-note {
  margin-top: 14px;
  font-size: 0.86rem;
  color: var(--dim);
}

.cta-note a { color: var(--dim); }
.cta-note a:hover { color: var(--text); }

/* ---------- Секции ---------- */

.section { padding: clamp(52px, 9vw, 92px) 0; }
.section + .section { border-top: 1px solid var(--line-soft); }

.section-head { margin-bottom: clamp(28px, 5vw, 44px); }

.section-head h2 {
  font-size: clamp(1.55rem, 4vw, 2.15rem);
  margin-bottom: 10px;
}

.section-head p {
  color: var(--dim);
  max-width: 56ch;
}

/* ---------- Карточки продуктов (главная) ---------- */

.cards { display: grid; gap: 18px; }

.card {
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 30px 26px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: rgba(232, 163, 61, 0.45);
  transform: translateY(-2px);
}

.card .kicker { font-size: 0.72rem; }

.card h3 { font-size: 1.45rem; }

.card p { color: var(--dim); }

.card-meta {
  color: var(--dim);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

.card-link {
  margin-top: auto;
  padding-top: 6px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
}

.card-link:hover { color: var(--accent-bright); }

/* ---------- Шаги «как это работает» ---------- */

.steps { display: grid; gap: 26px; }

.step-num {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  font-variant-numeric: tabular-nums;
}

.step h3 { font-size: 1.12rem; margin: 8px 0 8px; }

.step p { color: var(--dim); font-size: 0.97rem; }

/* ---------- Принципы ---------- */

.principles { display: grid; gap: 24px; }

.principle {
  border-left: 2px solid rgba(232, 163, 61, 0.4);
  padding-left: 18px;
}

.principle h3 { font-size: 1.05rem; margin-bottom: 7px; }
.principle p { color: var(--dim); font-size: 0.95rem; }

/* ---------- Карта модулей ---------- */

.modules {
  border-top: 1px solid var(--line);
  display: grid;
}

.module {
  display: grid;
  gap: 5px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.module h3 { font-size: 1.05rem; }

.module p { color: var(--dim); font-size: 0.96rem; }

/* ---------- Сценарии ---------- */

.scenarios { display: grid; gap: 26px; }

.scenario {
  border-left: 2px solid rgba(232, 163, 61, 0.4);
  padding-left: 18px;
}

.scenario h3 { font-size: 1.08rem; margin-bottom: 8px; }
.scenario p { color: var(--dim); font-size: 0.96rem; }

/* ---------- Плейсхолдеры скриншотов ---------- */

.shots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 760px;
}

.shot {
  aspect-ratio: 9 / 19;
  display: grid;
  place-items: center;
  border: 1px dashed #3a3a42;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
}

.shot span {
  color: var(--dim);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* ---------- Блок цены ---------- */

.buy {
  padding: clamp(30px, 5vw, 44px) clamp(24px, 4vw, 40px);
  background: linear-gradient(180deg, var(--bg-raise), var(--bg));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.price-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 12px;
}

.price {
  font-size: clamp(2.5rem, 7vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-bright);
  line-height: 1;
}

.price-note { color: var(--dim); font-size: 1rem; }

.buy-list {
  list-style: none;
  margin: 24px 0 4px;
  padding: 0;
  display: grid;
  gap: 11px;
  color: var(--dim);
  font-size: 0.97rem;
}

.buy-list li {
  position: relative;
  padding-left: 22px;
}

.buy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 11px;
  height: 1px;
  background: var(--accent);
}

/* ---------- Текстовые ссылки ---------- */

.prose a {
  color: var(--accent);
  text-decoration: none;
}

.prose a:hover { text-decoration: underline; }

/* ---------- FAQ ---------- */

.faq { border-top: 1px solid var(--line); }

.faq details { border-bottom: 1px solid var(--line); }

.faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 40px 20px 0;
  font-weight: 600;
  color: var(--text-bright);
  font-size: 1.02rem;
  transition: color 0.18s;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary:hover { color: var(--accent-bright); }

.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  translate: 0 -50%;
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.2s;
}

.faq details[open] summary::after { transform: rotate(45deg); }

.faq-body {
  padding: 0 0 22px;
  color: var(--dim);
  font-size: 0.97rem;
  max-width: 62ch;
  display: grid;
  gap: 10px;
}

.faq-tail { margin-top: 28px; }

/* ---------- Подвал ---------- */

.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 42px 0 58px;
  margin-top: clamp(40px, 8vw, 72px);
}

.footer-inner {
  display: grid;
  gap: 12px;
  color: var(--dim);
  font-size: 0.9rem;
}

.footer-brand { color: var(--text); }

.site-footer a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: color 0.18s, border-color 0.18s;
}

.site-footer a:hover {
  color: var(--accent-bright);
  border-color: rgba(232, 163, 61, 0.5);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
}

.footer-sep { color: var(--line); }

/* ---------- Десктоп ---------- */

@media (min-width: 700px) {
  body { font-size: 17px; }

  .cards { grid-template-columns: 1fr 1fr; gap: 22px; }

  .steps { grid-template-columns: repeat(3, 1fr); gap: 34px; }

  .principles { grid-template-columns: repeat(3, 1fr); gap: 34px; }

  .scenarios { grid-template-columns: repeat(3, 1fr); gap: 34px; }

  .module {
    grid-template-columns: 240px 1fr;
    gap: 24px;
    align-items: baseline;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: baseline;
  }

  .footer-note { grid-column: 1 / -1; }
}

/* ---------- Доступность ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
  }
}