:root {
  --color-ink: #171717;
  --color-muted: #646464;
  --color-line: #e6e6e6;
  --color-paper: #fafafa;
  --color-white: #ffffff;
  --color-red: #d71920;
  --color-red-dark: #aa1118;
  --color-pink: #fff0f1;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.09);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  min-height: 100vh;
  color: var(--color-ink);
  background: var(--color-paper);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem clamp(1rem, 4vw, 4rem);
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--color-line);
  box-shadow: 0 4px 22px rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo {
  width: 3.35rem;
  height: 3.35rem;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.brand small {
  margin-top: 0.1rem;
  color: var(--color-muted);
  font-size: 0.82rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.main-nav a {
  position: relative;
  padding: 0.65rem 0.75rem;
  color: var(--color-ink);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.active {
  color: var(--color-red);
  background: transparent;
  outline: none;
}

.main-nav a.active::after,
.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  position: absolute;
  right: 0.75rem;
  bottom: 0.35rem;
  left: 0.75rem;
  height: 2px;
  background: var(--color-red);
  content: "";
}

main {
  flex: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  min-height: 22rem;
  align-items: center;
  justify-items: center;
  padding: clamp(3rem, 8vw, 6rem) 0 2.5rem;
  text-align: center;
}

.hero-copy {
  max-width: 48rem;
}

.eyebrow {
  margin: 0.75rem 0 0.8rem;
  color: var(--color-red);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.welcome {
  margin: 0 0 0.35rem;
  color: var(--color-muted);
  font-size: 1.15rem;
  font-weight: 700;
}

h1,
h2 {
  margin: 0;
  line-height: 1.05;
}

h1 {
  max-width: 13ch;
  margin: 0 auto;
  font-size: clamp(3rem, 8vw, 6.4rem);
  font-weight: 900;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.hero p:not(.eyebrow),
.intro p,
.content-page p {
  color: var(--color-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.form-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(22rem, 1fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: start;
  padding: 1rem 0 clamp(4rem, 8vw, 6rem);
}

.intro {
  position: sticky;
  top: 6.5rem;
}

.feedback-form {
  display: grid;
  gap: 1.2rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  padding: 0;
  margin: 0;
  border: 0;
}

.mode-switch legend {
  grid-column: 1 / -1;
  margin-bottom: 0.2rem;
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.mode-switch label {
  cursor: pointer;
}

.mode-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.mode-switch span {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  color: var(--color-muted);
  font-weight: 800;
  text-align: center;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.mode-switch input:checked + span {
  color: var(--color-white);
  background: var(--color-red);
  border-color: var(--color-red);
}

.field {
  display: grid;
  gap: 0.45rem;
  color: var(--color-ink);
  font-weight: 800;
}

.field em {
  color: var(--color-muted);
  font-style: normal;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 0.95rem 1rem;
  color: var(--color-ink);
  background: #fffdfc;
  font: inherit;
}

textarea {
  resize: vertical;
  min-height: 12rem;
}

input:focus,
textarea:focus {
  border-color: var(--color-red);
  outline: 3px solid rgba(199, 25, 47, 0.16);
}

.privacy-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.privacy-note a {
  color: var(--color-red-dark);
  font-weight: 800;
}

.form-alert {
  padding: 0.9rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  line-height: 1.5;
}

.form-alert p {
  margin: 0;
}

.form-alert p + p {
  margin-top: 0.35rem;
}

.form-alert.success {
  color: #155724;
  background: #e6f4ea;
  border: 1px solid #b7dfc2;
}

.form-alert.error {
  color: #7f1d1d;
  background: #fff0f1;
  border: 1px solid #f3b6bc;
}

.honeypot {
  position: absolute;
  left: -9999px;
}

.submit-button,
.text-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.95rem 1.2rem;
  border: 0;
  border-radius: 8px;
  color: var(--color-white);
  background: var(--color-red);
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.submit-button:hover,
.submit-button:focus-visible,
.text-button:hover,
.text-button:focus-visible {
  background: var(--color-red-dark);
  outline: none;
}

.content-page {
  max-width: 760px;
  padding: clamp(4rem, 10vw, 7rem) 0;
}

.content-page h1 {
  max-width: none;
  margin-bottom: 1.2rem;
}

.text-button {
  margin-top: 1rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.4rem clamp(1rem, 4vw, 4rem);
  color: var(--color-muted);
  background: #111111;
  margin-top: auto;
}

.site-footer a,
.site-footer span {
  color: #f7f1ef;
}

.site-footer nav {
  display: flex;
  gap: 1rem;
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    display: grid;
    align-items: stretch;
    justify-content: stretch;
    gap: 0.9rem;
    padding: 0.85rem 1rem 1rem;
  }

  .brand {
    gap: 0.7rem;
  }

  .brand-logo {
    width: 2.8rem;
    height: 2.8rem;
  }

  .brand strong {
    font-size: 0.95rem;
  }

  .brand small {
    font-size: 0.78rem;
  }

  .main-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-self: stretch;
    gap: 0.45rem;
    margin-top: 0;
    width: 100%;
  }

  .main-nav a {
    min-height: 2.75rem;
    padding: 0.75rem 0.65rem;
    border: 1px solid var(--color-line);
    border-radius: 8px;
    background: var(--color-white);
    text-align: center;
  }

  .main-nav a.active,
  .main-nav a:hover,
  .main-nav a:focus-visible {
    color: var(--color-white);
    background: var(--color-red);
    border-color: var(--color-red);
  }

  .main-nav a.active::after,
  .main-nav a:hover::after,
  .main-nav a:focus-visible::after {
    display: none;
  }

  main {
    width: min(100% - 1.25rem, 1120px);
  }

  .hero {
    min-height: auto;
    padding: 2.2rem 0 1.5rem;
  }

  h1 {
    max-width: 11ch;
    font-size: clamp(2.6rem, 14vw, 4rem);
  }

  h2 {
    font-size: 1.8rem;
  }

  .welcome {
    font-size: 1rem;
  }

  .hero p:not(.eyebrow),
  .intro p,
  .content-page p {
    font-size: 1rem;
    line-height: 1.6;
  }

  .form-section {
    display: block;
    padding-top: 1rem;
  }

  .intro {
    position: static;
    margin-bottom: 1.4rem;
  }

  .feedback-form {
    gap: 1rem;
    padding: 1rem;
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.08);
  }

  .mode-switch {
    grid-template-columns: 1fr;
  }

  input,
  textarea,
  .submit-button,
  .text-button {
    font-size: 1rem;
  }

  input,
  textarea {
    min-height: 3.1rem;
  }

  textarea {
    min-height: 11rem;
  }

  .submit-button,
  .text-button {
    width: 100%;
  }

  .content-page {
    padding: 2.5rem 0 3.5rem;
  }

  .site-footer {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .main-nav {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2.45rem;
  }
}