/* aigent.by — продающий сайт. Только свои файлы: без внешних шрифтов, скриптов и аналитики. */
:root {
  --navy: #0B1430;
  --navy-2: #132B63;
  --blue: #1E3A8A;
  --teal: #0D9488;
  --teal-2: #2DD4BF;
  --mint: #5EEAD4;
  --ink: #0F172A;
  --muted: #475569;
  --line: #E2E8F0;
  --paper: #F8FAFC;
  --white: #FFFFFF;
  --radius: 20px;
  --shadow: 0 10px 40px rgba(15, 23, 42, .10);
  --font: Inter, "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 17px/1.6 var(--font);
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(32px, 6vw, 58px); font-weight: 750; }
h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 700; }
h3 { font-size: 20px; font-weight: 650; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section.alt { background: var(--paper); }
.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--muted); max-width: 720px; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 12px;
}

/* Шапка */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11, 20, 48, .88);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(94, 234, 212, .12);
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 21px; }
.brand img { width: 34px; height: 34px; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: #CBD5E1; text-decoration: none; font-size: 15px; }
.nav a:hover { color: #fff; }
.nav .hide-sm { display: inline; }

/* Кнопки */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: 14px; font-weight: 650; font-size: 16px;
  text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: transform .15s, box-shadow .15s;
  min-height: 48px;
}
.btn:hover { transform: translateY(-1px); }
.btn-main { background: linear-gradient(135deg, var(--teal), var(--teal-2)); color: #fff; box-shadow: 0 8px 24px rgba(13, 148, 136, .35); }
.btn-ghost { border-color: rgba(255, 255, 255, .35); color: #fff; }
.btn-line { border-color: var(--teal); color: var(--teal); background: #fff; }
.btn-sm { padding: 9px 16px; min-height: 40px; font-size: 15px; border-radius: 12px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }
.center .btns { justify-content: center; }

/* Первый экран */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: var(--navy) url(bg.svg) center / cover no-repeat;
  padding: 88px 0 96px;
}
.hero .lead { color: #CBD5E1; }
.hero h1 .accent { background: linear-gradient(90deg, var(--mint), #93C5FD); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 0; padding: 0; list-style: none; }
.badges li {
  font-size: 14px; color: #E2E8F0; padding: 7px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(94, 234, 212, .25);
}

/* Телефон с перепиской */
.phone {
  max-width: 360px; margin: 0 auto; background: #0F172A; border-radius: 36px; padding: 14px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .45), inset 0 0 0 2px rgba(255, 255, 255, .08);
}
.screen { background: var(--paper); border-radius: 26px; padding: 18px 14px; min-height: 420px; }
.chat-head { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.chat-head img { width: 32px; height: 32px; }
.chat-head b { color: var(--ink); font-size: 15px; display: block; }
.chat-head small { color: var(--teal); font-size: 12px; }
.msg { max-width: 86%; padding: 10px 13px; border-radius: 16px; margin: 0 0 10px; font-size: 14.5px; line-height: 1.45; color: var(--ink); }
.msg.me { margin-left: auto; background: linear-gradient(135deg, var(--teal), #14B8A6); color: #fff; border-bottom-right-radius: 5px; }
.msg.ai { background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 5px; }
.msg .tick { color: var(--teal); font-weight: 700; margin-left: 4px; }
.msg.me .tick { color: #fff; }
.msg .photo {
  display: block; width: 100%; height: 84px; border-radius: 10px; margin-bottom: 6px;
  background: linear-gradient(135deg, #93C5FD, #1E3A8A);
}

/* Карточки */
.grid { display: grid; gap: 22px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, .04);
}
.card p:last-child { margin-bottom: 0; }
.card .ico {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; font-size: 24px;
  background: linear-gradient(135deg, rgba(13, 148, 136, .12), rgba(30, 58, 138, .12)); margin-bottom: 14px;
}
.card.big {
  background: linear-gradient(145deg, var(--navy) 0%, var(--navy-2) 55%, #0B5E5A 100%); color: #fff; border: 0;
  box-shadow: var(--shadow);
}
.card.big p { color: #CBD5E1; }
.card.big .ico { background: rgba(94, 234, 212, .15); }
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: rgba(13, 148, 136, .12); color: var(--teal); margin-bottom: 10px;
}
.tag.soon { background: #F1F5F9; color: var(--muted); }
.card.big .tag { background: rgba(94, 234, 212, .18); color: var(--mint); }
.card .more { margin-top: 18px; }
.products { grid-template-columns: 1.4fr 1fr 1fr; }

/* Сценарий дня */
.day { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.day li { display: grid; grid-template-columns: 92px 1fr; gap: 18px; align-items: start; }
.day .time { font-weight: 750; font-size: 22px; color: var(--teal); padding-top: 18px; }
.day .card { padding: 18px 20px; }
.day .msg { max-width: 100%; }

/* Было / стало */
.vs { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.vs .card ul { margin: 0; padding-left: 20px; }
.vs .card li { margin-bottom: 8px; }
.vs .before { background: #fff; }
.vs .after { border-color: var(--teal); box-shadow: 0 10px 30px rgba(13, 148, 136, .14); }

/* Таблица ценности */
.value { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.value th, .value td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 16px; }
.value th { background: var(--navy); color: #fff; font-weight: 650; }
.value tr:last-child td { border-bottom: 0; background: rgba(13, 148, 136, .08); font-weight: 650; }

/* Защита */
.shield { background: linear-gradient(145deg, var(--navy), var(--navy-2)); color: #fff; }
.shield .lead, .shield p { color: #CBD5E1; }
.shield .card { background: rgba(255, 255, 255, .05); border-color: rgba(94, 234, 212, .2); color: #fff; box-shadow: none; }
.shield .eyebrow { color: var(--mint); }

/* Вопросы */
details { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 4px 20px; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 650; padding: 14px 0; list-style: none; position: relative; padding-right: 28px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 10px; font-size: 24px; color: var(--teal); }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); }

/* Призыв */
.cta { background: linear-gradient(135deg, var(--blue), var(--teal)); color: #fff; border-radius: 28px; padding: 48px 32px; }
.cta .lead { color: #E0F2F1; }
.note { font-size: 14px; color: var(--muted); }
.cta .note { color: #CCFBF1; }

/* Подвал */
.foot { background: var(--navy); color: #94A3B8; padding: 40px 0; font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; }
.foot a { color: #CBD5E1; text-decoration: none; }
.foot nav { display: flex; flex-wrap: wrap; gap: 18px; }

/* Телефоны и планшеты */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3, .products { grid-template-columns: 1fr 1fr; }
  .products .big { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .section { padding: 52px 0; }
  .hero { padding: 52px 0 60px; }
  .nav { gap: 12px; }
  .nav .hide-sm { display: none; }
  .g2, .g3, .g4, .products, .vs { grid-template-columns: 1fr; }
  .day li { grid-template-columns: 1fr; gap: 6px; }
  .day .time { padding-top: 0; font-size: 18px; }
  .btns .btn { flex: 1 1 100%; }
  .value thead { display: none; }
  .value, .value tbody, .value tr, .value td { display: block; width: 100%; }
  .value tr { border-bottom: 1px solid var(--line); padding: 12px 16px; }
  .value tr:last-child { background: rgba(13, 148, 136, .08); border-bottom: 0; }
  .value td { border: 0; padding: 2px 0; font-size: 15px; }
  .value td:first-child { font-weight: 700; margin-bottom: 4px; }
  .value tr:last-child td { background: none; }
  .value td[data-label]::before { content: attr(data-label) ": "; color: var(--muted); font-weight: 400; }
  .cta { padding: 36px 20px; border-radius: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}