:root {
  --bg: #ffffff;
  --bg-alt: #f6f7f9;
  --fg: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #d1252b;
  --accent-fg: #ffffff;
  --radius: 12px;
  --container: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0c0f;
    --bg-alt: #14161a;
    --fg: #f3f4f6;
    --muted: #9ca3af;
    --border: #262a31;
    --accent: #ef4a50;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    16px / 1.55 system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 1em;
}

h3 {
  font-size: 1.125rem;
}

p {
  margin: 0 0 1em;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 720px;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.menu {
  display: flex;
  gap: 20px;
  margin-left: auto;
}

.menu a {
  text-decoration: none;
  color: var(--muted);
}

.menu a:hover {
  color: var(--fg);
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
}

.burger span {
  display: block;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
}

/* buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
  cursor: pointer;
  font-size: 1rem;
  transition:
    transform 0.12s ease,
    opacity 0.12s ease;
}

.button:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.button--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

.button--small {
  padding: 8px 16px;
  font-size: 0.9375rem;
}

/* hero */
.hero {
  padding: clamp(56px, 10vw, 120px) 0 clamp(40px, 8vw, 96px);
  background: radial-gradient(
    60% 60% at 70% 0%,
    color-mix(in srgb, var(--accent) 14%, transparent),
    transparent 70%
  );
}

.hero__inner {
  max-width: 760px;
}

.eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8125rem;
  margin-bottom: 20px;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 60ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 16px;
}

.hint {
  color: var(--muted);
  font-size: 0.875rem;
}

/* sections */
.section {
  padding: clamp(48px, 7vw, 88px) 0;
}

.section--alt {
  background: var(--bg-alt);
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card__icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--muted);
  margin: 0;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
  max-width: 720px;
}

.steps li {
  position: relative;
  padding-left: 52px;
  min-height: 40px;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
}

/* pricing */
.plan ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 24px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.plan .button {
  width: 100%;
}

.plan--featured {
  border-color: var(--accent);
  box-shadow: 0 8px 32px color-mix(in srgb, var(--accent) 18%, transparent);
}

.price {
  font-size: 2rem;
  font-weight: 700;
  margin: 8px 0 0;
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
}

/* faq */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

summary::after {
  content: "+";
  color: var(--muted);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 10px 0 0;
  color: var(--muted);
}

/* form */
.form {
  display: grid;
  gap: 14px;
  max-width: 480px;
}

.form label {
  display: grid;
  gap: 6px;
  font-size: 0.9375rem;
}

.form input {
  font: inherit;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
}

.form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.form input[aria-invalid="true"] {
  border-color: #dc2626;
}

.form__status {
  min-height: 1.5em;
  margin: 0;
  color: var(--muted);
}

.form__status.is-error {
  color: #dc2626;
}

.form__status.is-ok {
  color: #16a34a;
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}

.footer p {
  margin: 0;
}

.footer nav {
  display: flex;
  gap: 16px;
}

/* mobile */
@media (max-width: 760px) {
  .menu {
    display: none;
    position: absolute;
    inset: 64px 0 auto 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
  }

  .menu a {
    padding: 12px 0;
  }

  .site-header.is-open .menu {
    display: flex;
  }

  .nav .button--small {
    display: none;
  }

  .burger {
    display: flex;
  }

  .plan .button {
    width: 100%;
  }
}

/* ===== Лендинг Глеба Зайкова ===== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* аватарка в шапке */
.logo__ava {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  image-rendering: pixelated;
}

/* бегущая строка */
.ticker {
  display: flex;
  overflow: hidden;
  gap: 0;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 8px 0;
  user-select: none;
}

.ticker__track {
  display: flex;
  flex: 0 0 auto;
  gap: 40px;
  padding-right: 40px;
  white-space: nowrap;
  animation: ticker 42s linear infinite;
}

.ticker__item::before {
  content: "● ";
}

@keyframes ticker {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ticker__track {
    animation: none;
  }
  .ticker__track + .ticker__track {
    display: none;
  }
  .ticker {
    overflow-x: auto;
  }
}

/* герой с портретом */
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: center;
}

.portrait {
  margin: 0;
  text-align: center;
}

.portrait__img {
  width: min(320px, 100%);
  aspect-ratio: 1;
  object-fit: cover;
  object-position: top center;
  border-radius: 50%;
  margin-inline: auto;
  border: 6px solid var(--accent);
  box-shadow: 0 12px 40px color-mix(in srgb, var(--accent) 22%, transparent);
  image-rendering: pixelated;
  background: var(--bg-alt);
}

.portrait figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.875rem;
  display: grid;
  gap: 6px;
}

/* ссылка на телеграм */
.tg {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.tg:hover {
  text-decoration: underline;
}

.tg--big {
  font-size: 1.125rem;
}

/* цифры */
.facts {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.fact {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.fact__num {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  color: var(--accent);
  margin: 0 0 4px;
  line-height: 1;
}

.fact p:last-child {
  color: var(--muted);
  margin: 0;
}

/* биография */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  display: grid;
  gap: 18px;
  border-left: 2px solid var(--border);
}

.timeline li {
  position: relative;
  color: var(--muted);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
}

.timeline strong {
  color: var(--fg);
}

/* аргументы */
.arguments {
  list-style: none;
  counter-reset: arg;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
}

.argument {
  counter-increment: arg;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-alt);
  padding: 24px 24px 8px;
}

.argument h3 {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 1.25rem;
}

.argument h3::before {
  content: counter(arg);
  flex: 0 0 auto;
  min-width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 1rem;
}

.argument p {
  color: var(--muted);
}

/* цитата */
.quote {
  margin: 36px 0 0;
  padding: 24px 28px;
  border-left: 4px solid var(--accent);
  background: var(--bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.quote p {
  font-size: 1.125rem;
  font-style: italic;
  margin: 0 0 10px;
}

.quote footer {
  color: var(--muted);
  font-size: 0.9375rem;
}

/* врезка */
.callout {
  margin-top: 32px;
  border: 1px dashed var(--accent);
  border-radius: var(--radius);
  padding: 24px;
}

.callout p:last-child {
  margin: 0;
  color: var(--muted);
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 16px;
}

.tag {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.875rem;
  background: var(--bg);
}

.note {
  color: var(--muted);
  font-size: 0.8125rem;
  margin: 16px 0 0;
}

/* чекбокс в форме */
.form .check {
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 10px;
  color: var(--muted);
  font-size: 0.875rem;
}

.form .check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--accent);
  padding: 0;
}

.form .check a {
  color: var(--accent);
}

@media (max-width: 900px) {
  .hero__grid,
  .split {
    grid-template-columns: 1fr;
  }

  .portrait {
    order: -1;
  }
}

@media (max-width: 760px) {
  .nav .logo span {
    font-size: 0.9375rem;
  }

  .argument {
    padding: 20px 18px 4px;
  }
}

/* ловушка для ботов и состояние отправки */
.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.button[disabled] {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}