/* Clima Calculator — оформление сайта.
   Фирменный синий взят из приложения, чтобы сайт и продукт читались как одно целое. */

:root {
  --blue-900: #0A2F6B;
  --blue-700: #0D47A1;
  --blue-500: #1565C0;
  --teal: #00897B;
  --ink: #16202e;
  --ink-soft: #55637a;
  --line: #e3e8f0;
  --bg: #f6f8fb;
  --card: #ffffff;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue-700); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* ── Шапка ─────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 18px; height: 62px; }
.nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--blue-900); text-decoration: none; letter-spacing: -0.2px; }
.nav .brand img { width: 30px; height: 30px; border-radius: 7px; }
.nav .links { margin-left: auto; display: flex; gap: 22px; }
.nav .links a { color: var(--ink-soft); text-decoration: none; font-size: 15px; font-weight: 600; }
.nav .links a:hover { color: var(--blue-700); }
@media (max-width: 700px) { .nav .links { display: none; } }

/* ── Первый экран ──────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 55%, var(--blue-500) 100%);
  color: #fff;
  padding: 74px 0 84px;
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 46px; align-items: center; }
.hero h1 { font-size: 44px; line-height: 1.12; margin: 0 0 18px; letter-spacing: -1px; font-weight: 800; }
.hero .lead { font-size: 19px; color: rgba(255,255,255,0.9); margin: 0 0 12px; }
.hero .norm { font-size: 15px; color: rgba(255,255,255,0.66); margin: 0 0 30px; }
.hero .shot { justify-self: center; width: 268px; border-radius: 26px; box-shadow: 0 26px 60px rgba(0,0,0,0.4); }
@media (max-width: 860px) {
  .hero { padding: 54px 0 60px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 33px; }
  .hero .shot { width: 230px; }
}

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; color: var(--blue-900);
  padding: 14px 26px; border-radius: 13px;
  font-weight: 800; text-decoration: none; font-size: 16px;
  box-shadow: 0 8px 22px rgba(0,0,0,0.22);
  transition: transform .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.ghost { background: rgba(255,255,255,0.12); color: #fff; box-shadow: none; border: 1px solid rgba(255,255,255,0.35); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Секции ────────────────────────────────────────────────────── */
section { padding: 74px 0; }
section.tight { padding: 52px 0; }
h2 { font-size: 31px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.6px; color: var(--blue-900); }
.sub { color: var(--ink-soft); font-size: 17px; margin: 0 0 38px; max-width: 660px; }

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 26px;
}
.card .ico { font-size: 27px; margin-bottom: 12px; }
.card h3 { margin: 0 0 8px; font-size: 18px; color: var(--blue-900); }
.card p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }

/* Экраны приложения */
.shots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.shots figure { margin: 0; }
.shots img { border-radius: 15px; border: 1px solid var(--line); box-shadow: 0 6px 20px rgba(16,32,64,0.09); }
.shots figcaption { font-size: 13.5px; color: var(--ink-soft); margin-top: 9px; text-align: center; }
@media (max-width: 900px) { .shots { grid-template-columns: repeat(2, 1fr); } }

/* Две аудитории */
.aud { border-radius: 18px; padding: 32px; color: #fff; }
.aud.pro { background: linear-gradient(135deg, var(--blue-700), var(--blue-500)); }
.aud.home { background: linear-gradient(135deg, #006064, var(--teal)); }
.aud h3 { margin: 0 0 10px; font-size: 22px; }
.aud ul { margin: 0; padding-left: 20px; color: rgba(255,255,255,0.93); font-size: 15.5px; }
.aud li { margin-bottom: 7px; }

/* Статьи */
.articles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .articles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .articles { grid-template-columns: 1fr; } }
.art {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 26px; text-decoration: none; color: inherit;
  transition: border-color .15s ease, transform .15s ease;
}
.art:hover { border-color: var(--blue-500); transform: translateY(-2px); }
.art .tag { font-size: 12px; font-weight: 800; letter-spacing: .6px; text-transform: uppercase; color: var(--blue-500); }
.art h3 { margin: 9px 0 8px; font-size: 19px; color: var(--blue-900); line-height: 1.3; }
.art p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* Полоса с призывом */
.cta { background: var(--blue-900); color: #fff; text-align: center; }
.cta h2 { color: #fff; }
.cta .sub { color: rgba(255,255,255,0.78); margin: 0 auto 30px; }
.cta .btn-row { justify-content: center; }

/* ── Статья ────────────────────────────────────────────────────── */
.post { max-width: 760px; margin: 0 auto; padding: 54px 22px 20px; }
.post .kicker { font-size: 12.5px; font-weight: 800; letter-spacing: .7px; text-transform: uppercase; color: var(--blue-500); }
.post h1 { font-size: 37px; line-height: 1.18; margin: 10px 0 16px; letter-spacing: -0.8px; color: var(--blue-900); }
.post .stand { font-size: 19px; color: var(--ink-soft); margin: 0 0 34px; }
.post h2 { font-size: 25px; margin: 40px 0 12px; }
.post h3 { font-size: 19px; margin: 28px 0 8px; color: var(--blue-900); }
.post p { margin: 0 0 17px; }
.post ul, .post ol { margin: 0 0 17px; padding-left: 22px; }
.post li { margin-bottom: 8px; }

.note {
  background: #eef3fa; border: 1px solid #cfdcf0; border-left: 4px solid var(--blue-500);
  border-radius: 10px; padding: 17px 20px; margin: 26px 0; font-size: 16px;
}
.note strong { color: var(--blue-900); }
.warn { background: #fff7e8; border-color: #f2dcae; border-left-color: #E8A317; }

table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15.5px; }
th, td { padding: 11px 13px; border-bottom: 1px solid var(--line); text-align: left; }
th { background: #eef2f8; color: var(--blue-900); font-size: 14px; text-transform: uppercase; letter-spacing: .4px; }
.tablewrap { overflow-x: auto; }

.formula {
  background: #0f1b2d; color: #dbe7ff; border-radius: 12px;
  padding: 18px 20px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px; margin: 22px 0; overflow-x: auto;
}

.inline-cta {
  background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
  color: #fff; border-radius: 16px; padding: 28px; margin: 38px 0;
}
.inline-cta h3 { margin: 0 0 8px; font-size: 20px; }
.inline-cta p { color: rgba(255,255,255,0.9); margin: 0 0 18px; }

/* ── Подвал ────────────────────────────────────────────────────── */
footer { background: #0c1626; color: rgba(255,255,255,0.62); padding: 46px 0 34px; font-size: 15px; }
footer a { color: rgba(255,255,255,0.86); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .cols { display: flex; gap: 40px; flex-wrap: wrap; justify-content: space-between; }
footer .links { display: flex; gap: 20px; flex-wrap: wrap; }
footer .small { margin-top: 26px; font-size: 13.5px; color: rgba(255,255,255,0.42); }