:root {
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --dark: #0f2233;
  --dark-2: #16314a;
  --text: #1c2a36;
  --muted: #5b6b7a;
  --line: #dde4eb;
  --accent: #0e8f86;
  --accent-hover: #0b766f;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(15, 34, 51, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font: 16px/1.6 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; color: var(--dark); }
h1 { font-size: clamp(30px, 5vw, 48px); }
h2 { font-size: clamp(24px, 3.4vw, 34px); }
h3 { font-size: 19px; margin-top: 1.2em; }
h4 { font-size: 16px; }
.card h3:first-child, .card h4:first-child, .feature h3 { margin-top: 0; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.container--narrow { max-width: 860px; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--dark); text-decoration: none; white-space: nowrap; flex-shrink: 0; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { color: var(--text); text-decoration: none; font-size: 15px; white-space: nowrap; }
.nav a:hover { color: var(--accent); }
.header__phone { font-weight: 600; color: var(--dark); text-decoration: none; white-space: nowrap; }

.breadcrumbs { font-size: 14px; color: var(--muted); padding-top: 14px; padding-bottom: 0; }
.breadcrumbs a { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex; white-space: nowrap; align-items: center; justify-content: center;
  padding: 14px 24px; border: 2px solid var(--accent); border-radius: 10px;
  background: var(--accent); color: #fff; font: 600 16px/1.2 inherit;
  cursor: pointer; text-decoration: none; transition: background .15s, color .15s;
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--ghost { background: transparent; color: var(--accent); }
.btn--ghost:hover { background: var(--accent); color: #fff; }
.btn--sm { padding: 9px 16px; font-size: 14px; }
.btn--block { width: 100%; margin-top: 8px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 16px; }
.btns--center { justify-content: center; margin-top: 32px; }

/* Hero */
.hero { padding: 32px 0 56px; }
.hero__inner { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.lead { font-size: 19px; color: var(--dark); }
.note { font-size: 14px; color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 20px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E") center/14px no-repeat;
}

/* USP slider */
.usp { background: var(--dark); color: #fff; padding: 22px 0; }
.usp__track { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(220px, 1fr); gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
.usp__track::-webkit-scrollbar { display: none; }
.usp__item { scroll-snap-align: start; display: flex; flex-direction: column; gap: 4px; padding: 6px 16px 6px 0; border-right: 1px solid var(--dark-2); }
.usp__item:last-child { border-right: 0; }
.usp__item b { font-size: 22px; color: #5fd3c8; }
.usp__item span { font-size: 14px; color: #c9d6e2; line-height: 1.4; }

/* Sections */
.section { padding: 72px 0; }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--dark); color: #d7e1ea; }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--dark .note { color: #9fb2c4; }
.section--dark .card { color: var(--text); }
.section--dark .card h3 { color: var(--dark); }
.section--dark .card .note { color: var(--muted); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 24px; }
.stack { display: grid; gap: 16px; }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.card__img { margin: -8px auto 16px; border-radius: 8px; }
.feature { padding: 20px 0 0; border-top: 3px solid var(--accent); }

.props { display: grid; grid-template-columns: minmax(140px, 45%) 1fr; margin: 0 0 12px; }
.props dt, .props dd { margin: 0; padding: 9px 0; border-bottom: 1px solid var(--line); }
.props dt { color: var(--muted); padding-right: 12px; }
.props dd { font-weight: 500; }
.props--inline { max-width: 640px; }

.list { padding-left: 20px; margin: 0 0 1em; }
.list li { margin-bottom: 4px; }
.list--cols { columns: 2; column-gap: 24px; }

/* Table */
.table-wrap { overflow-x: auto; margin: 20px 0; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); }
.table th { background: var(--dark); color: #fff; font-weight: 600; }
.table tr:last-child td { border-bottom: 0; }
.table td:first-child { color: var(--muted); width: 40%; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: s; }
.steps li { background: var(--bg-alt); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 8px; }
.steps b { color: var(--dark); }
.steps span { font-size: 15px; color: var(--muted); }

/* Expert */
.expert { display: grid; grid-template-columns: 160px 1fr; gap: 32px; align-items: start; }
.expert__photo { width: 160px; height: 160px; border-radius: 50%; background: var(--bg-alt); border: 1px dashed var(--line); display: grid; place-items: center; color: var(--muted); }

.legal { max-width: 900px; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 40px 18px 0; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 26px; color: var(--accent); }
.faq details[open] summary::after { content: "−"; }
.faq summary h3 { margin: 0; font-size: 17px; }
.faq details p { color: var(--muted); padding-bottom: 8px; }

/* Forms */
.form { display: grid; gap: 12px; }
.form label { display: grid; gap: 4px; font-size: 14px; color: var(--muted); }
.form input:not([type=checkbox]), .form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font: 16px/1.4 inherit; color: var(--text); background: #fff;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form .check { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; }
.form .check input { margin-top: 3px; }
.form__msg { margin: 0; font-size: 14px; min-height: 1em; }
.form__msg.ok { color: var(--accent); }
.form__msg.err { color: #c0392b; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* Strip */
.strip { background: var(--accent); color: #fff; padding: 28px 0; }
.strip__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.strip b { display: block; font-size: 19px; }
.strip span { opacity: .9; font-size: 15px; }
.strip .btn { background: #fff; color: var(--accent); border-color: #fff; }
.strip .btn:hover { background: var(--dark); color: #fff; border-color: var(--dark); }

/* Footer */
.footer { background: var(--dark); color: #b9c8d6; padding: 48px 0 24px; font-size: 15px; }
.footer a { color: #e2ebf3; }
.footer__inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; }
.footer p { margin: 0 0 6px; }
.logo--footer { color: #fff; margin-bottom: 12px; }
.footer__links { display: grid; gap: 6px; }
.footer__links a { text-decoration: none; }
.footer__links a:hover { text-decoration: underline; }
.footer__copy { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--dark-2); font-size: 13px; }

/* Modal */
.modal { border: 0; border-radius: var(--radius); padding: 28px; width: min(440px, calc(100% - 32px)); box-shadow: 0 20px 60px rgba(0, 0, 0, .3); }
.modal::backdrop { background: rgba(15, 34, 51, .6); }
.modal h3 { margin: 0 0 4px; padding-right: 28px; }
.modal[open] { animation: modal-in .2s ease; }
.modal[open]::backdrop { animation: fade-in .2s ease; }
.modal--closing[open] { animation: modal-out .25s ease forwards; }
.modal--closing[open]::backdrop { animation: fade-out .25s ease forwards; }
@keyframes modal-in { from { opacity: 0; transform: translateY(12px) scale(.98); } }
@keyframes modal-out { to { opacity: 0; transform: translateY(12px) scale(.98); } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes fade-out { to { opacity: 0; } }

/* Сообщение об успешной отправке */
.toast {
  position: fixed; left: 50%; top: 50%; z-index: 100;
  transform: translate(-50%, -50%) scale(.96);
  width: min(460px, calc(100% - 32px)); padding: 28px 28px 26px;
  background: var(--dark); color: #fff; border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
  text-align: center;
  opacity: 0; pointer-events: none; cursor: pointer; transition: opacity .3s ease, transform .3s ease;
}
.toast::before { content: '✓'; display: block; margin: 0 auto 10px; width: 44px; height: 44px; line-height: 44px; border-radius: 50%; background: var(--accent); font-size: 24px; }
.toast--show { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%) scale(1); }
.toast__title { display: block; font-size: 20px; margin-bottom: 8px; }
.toast__text { display: block; font-size: 15px; line-height: 1.5; color: #c9d6e2; }
.modal__close { position: absolute; top: 12px; right: 14px; border: 0; background: none; font-size: 28px; line-height: 1; cursor: pointer; color: var(--muted); }

/* Inner pages */
.page { padding: 48px 0 72px; }
.page h1 { font-size: clamp(26px, 4vw, 36px); }

/* Responsive */
@media (max-width: 1180px) {
  .nav { display: none; }
  .header__phone { margin-left: auto; }
}
@media (max-width: 1024px) {
  .header__phone { margin-left: auto; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .hero__inner, .grid-2, .footer__inner { grid-template-columns: 1fr; gap: 28px; }
  .hero__img { order: -1; max-width: 420px; }
  .grid-3 { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
}
@media (max-width: 560px) {
  .header__phone { display: none; }
  .header .btn--sm { margin-left: auto; }
  .logo span { font-size: 15px; }
  .checks, .grid-4, .steps, .form__row { grid-template-columns: 1fr; }
  .list--cols { columns: 1; }
  .btns .btn { width: 100%; }
  .strip__inner { flex-direction: column; align-items: stretch; text-align: center; }
  .expert { grid-template-columns: 1fr; }
  .expert__photo { width: 120px; height: 120px; }
  .props { grid-template-columns: 1fr; }
  .props dt { border-bottom: 0; padding-bottom: 0; }
}