/* ✏️ Цвета сайта — меняются здесь */
:root {
  --bg: #fafaf8;
  --text: #111111;
  --muted: #6b6b6b;
  --line: #e6e6e2;
  --card: #f1f1ed;
  --accent: #111111;
  --accent-text: #fafaf8;
  --ok: #2e9d5b;
  --err: #d0473a;
  color-scheme: light;
}
/* Тёмная тема: по настройке устройства (если посетитель сам не выбрал светлую) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0e0e;
    --text: #f2f2ef;
    --muted: #9a9a96;
    --line: #262626;
    --card: #171717;
    --accent: #f2f2ef;
    --accent-text: #0e0e0e;
    color-scheme: dark;
  }
}
/* …или если посетитель выбрал тёмную кнопкой */
:root[data-theme="dark"] {
  --bg: #0e0e0e;
  --text: #f2f2ef;
  --muted: #9a9a96;
  --line: #262626;
  --card: #171717;
  --accent: #f2f2ef;
  --accent-text: #0e0e0e;
  color-scheme: dark;
}
body { transition: background-color .25s, color .25s; }

/* Кнопка темы */
.theme-toggle {
  width: 36px; height: 36px; display: grid; place-items: center; flex: none;
  background: none; color: var(--text); cursor: pointer;
  border: 1px solid var(--line); border-radius: 999px;
}
.theme-toggle:hover { border-color: var(--text); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .moon { display: none; }
:root[data-theme-effective="dark"] .theme-toggle .sun { display: none; }
:root[data-theme-effective="dark"] .theme-toggle .moon { display: block; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Manrope", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* Навигация */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  padding: 16px max(16px, calc((100% - 1120px) / 2));
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
}
.logo { font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
.menu { display: flex; gap: 24px; margin-left: auto; margin-right: 12px; }
.menu a { text-decoration: none; color: var(--muted); font-size: 15px; transition: color .2s; }
.menu a:hover { color: var(--text); }
/* Выпадающий список языков */
.lang { position: relative; }
.lang button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.lang .lang-toggle {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; letter-spacing: .04em;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px;
}
.lang .lang-toggle:hover { border-color: var(--text); }
.chev { font-size: 10px; transition: transform .2s; }
.lang-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 170px;
  list-style: none; padding: 6px; border-radius: 14px;
  background: var(--bg); border: 1px solid var(--line);
  box-shadow: 0 12px 32px rgba(0,0,0,.18);
  animation: drop .18s ease;
}
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
.lang-menu button {
  width: 100%; text-align: left; display: flex; gap: 10px; align-items: center;
  padding: 9px 12px; border-radius: 10px; font-size: 14px; color: var(--muted);
}
.lang-menu b { color: var(--text); font-size: 12px; width: 22px; }
.lang-menu button:hover { background: var(--card); color: var(--text); }
.lang-menu button[aria-current="true"] { background: var(--card); color: var(--text); }

/* Секции */
section { padding: 96px 0; border-top: 1px solid var(--line); }
section.hero { border-top: 0; padding-top: 112px; }
h1 { font-size: clamp(36px, 6.4vw, 80px); line-height: 1.03; letter-spacing: -0.04em; font-weight: 800; max-width: 15ch; }
h2 { font-size: clamp(28px, 4vw, 44px); line-height: 1.1; letter-spacing: -0.03em; font-weight: 800; }
h3 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.35; }
.eyebrow { color: var(--muted); font-size: 13px; margin-bottom: 20px; text-transform: uppercase; letter-spacing: .08em; }
.lead { max-width: 600px; margin-top: 24px; color: var(--muted); font-size: 19px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.btn {
  display: inline-block; padding: 14px 24px; border-radius: 999px;
  background: var(--accent); color: var(--accent-text);
  text-decoration: none; font-weight: 600; font-size: 15px; font-family: inherit;
  border: 1px solid var(--accent); transition: transform .2s; cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }

/* Карточки преимуществ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.card { background: var(--card); border-radius: 20px; padding: 28px; }
.card .num { display: block; color: var(--muted); font-size: 13px; font-weight: 700; margin-bottom: 40px; }
.card p { color: var(--muted); font-size: 15px; margin-top: 8px; }

/* Кейс */
.shot { display: block; margin-top: 40px; border-radius: 20px; overflow: hidden; border: 1px solid var(--line); }
.shot img { transition: transform .5s; }
.shot:hover img { transform: scale(1.015); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
.stats div { background: var(--card); border-radius: 16px; padding: 20px; }
.stats dt { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.stats dd { color: var(--muted); font-size: 14px; margin-top: 6px; line-height: 1.4; }
.case-body { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 40px; }
.case-body p { color: var(--muted); margin-top: 8px; }
.checks { list-style: none; margin-top: 12px; display: grid; gap: 8px; }
.checks li { padding-left: 28px; position: relative; color: var(--muted); }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--text); font-weight: 700; }
.more { display: inline-block; margin-top: 24px; font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--line); }
.more:hover { border-color: var(--text); }

/* Две колонки */
.split { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.note { color: var(--muted); font-size: 15px; margin-top: 16px; max-width: 300px; }
.list { list-style: none; }
.list li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.list li:first-child { padding-top: 0; }
.list p { color: var(--muted); font-size: 15px; margin-top: 4px; }

/* Этапы */
.steps { list-style: none; counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.steps li { counter-increment: s; border-top: 2px solid var(--text); padding-top: 16px; }
.steps li::before { content: "0" counter(s); display: block; color: var(--muted); font-size: 13px; font-weight: 700; margin-bottom: 8px; }
.steps p { color: var(--muted); font-size: 15px; margin-top: 6px; }

/* Заявка */
.contact h2 { font-size: clamp(32px, 5vw, 60px); letter-spacing: -0.04em; line-height: 1.05; max-width: 16ch; }
.messengers { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.messengers:not(:has(a:not([hidden]))) { display: none; }
.btn.wa { background: #25d366; border-color: #25d366; color: #0b2915; }
.btn.tg { background: #2aabee; border-color: #2aabee; color: #fff; }
.form { margin-top: 40px; max-width: 720px; display: grid; gap: 16px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.form input, .form textarea {
  font: inherit; color: var(--text); background: transparent;
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; resize: vertical;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--text); }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form button:disabled { opacity: .5; cursor: default; transform: none; }
.status { font-size: 15px; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }

.foot { display: flex; justify-content: space-between; padding: 32px 0 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
.foot a { text-decoration: none; }

/* Появление при прокрутке */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Планшет и телефон */
@media (max-width: 900px) {
  .menu { display: none; }
  .theme-toggle { margin-left: auto; }
  .cards { grid-template-columns: 1fr; }
  .card .num { margin-bottom: 16px; }
  .case-body, .split { grid-template-columns: 1fr; gap: 24px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  section { padding: 64px 0; }
  section.hero { padding-top: 56px; }
  .lead { font-size: 17px; }
  .steps { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
}