*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { 
  scroll-behavior: smooth; 
  }

:root {
  --color-dark: #1f1f1f;
  --color-white: #fff;
  --color-muted: #6b6b6b;
  --color-border: #e0e0e0;
  --color-border-hover: rgba(31, 31, 31, 0.14);
  --transition: 0.15s ease;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-dark);
  background: #fdfdfd;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 32px 48px;
}

/* Header */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo__icon {
  width: 36px;
  height: auto;
  flex-shrink: 0;
  display: block;
}

.logo__text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  height: 44px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity var(--transition), background var(--transition), border-color var(--transition);
}

.btn:hover {
  opacity: 0.82;
}

.btn--outline {
  background: var(--color-white);
  border-color: var(--color-border);
  color: var(--color-dark);
}

.btn--outline:hover {
  border-color: var(--color-border-hover);
}

.btn--dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn--dark:hover {
  background: #333;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: 1fr minmax(200px, 380px);
  align-items: center;
  gap: 32px;
  margin-bottom: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}

.hero__content {
  min-width: 0;
}

.hero__image {
  width: 100%;
  max-width: 380px;
  height: auto;
  justify-self: end;
  display: block;
  background: var(--color-white);
}

.hero__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.hero__title {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 20px;
  line-height: 1.15;
}

.hero__text {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.hero__btn {
  min-width: 180px;
}

/* Sections */

.section-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.about {
  margin-bottom: 64px;
}

.about__layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
  padding: 32px;
  border: 1px solid #e0e0e08c;
  border-radius: 12px;
}

.about__profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 4px;
}

.about__avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 1px solid #e0e0e08c;
  background: var(--color-white);
  margin-bottom: 16px;
}

.about__name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.about__role {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.about__tagline {
  font-size: 12px;
  line-height: 1.45;
  color: var(--color-muted);
  font-style: italic;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.about__text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-muted);
}

/* Benefits */

.benefits {
  margin-bottom: 64px;
}

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.benefit {
  padding: 24px;
  border: 1px solid #e0e0e08c;
  border-radius: 12px;
  transition: border-color var(--transition);
}

.benefit:hover {
  border-color: var(--color-border-hover);
}

.benefit__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.benefit__text {
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-muted);
}

/* Reviews */

.reviews {
  margin-bottom: 64px;
}

.reviews__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.review {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 28px 20px;
  border: 1px solid #e0e0e08c;
  border-radius: 12px;
  transition: border-color var(--transition);
}

.review:hover {
  border-color: var(--color-border-hover);
}

.review__head {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.review__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.review__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.review__nickname {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-dark);
}

.review__date {
  font-size: 11px;
  color: var(--color-muted);
}

.review__text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
  font-style: italic;
}

/* Contact */

.contact {
  margin-bottom: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.contact__lead {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 480px;
}

.contact__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 560px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field:last-of-type {
  grid-column: 1 / -1;
}

.field__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field__input {
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-dark);
  background: var(--color-white);
  transition: border-color var(--transition);
  outline: none;
}

.field__input::placeholder {
  color: #b0b0b0;
}

.field__input:hover {
  border-color: #bbb;
}

.field__input:focus {
  border-color: var(--color-dark);
}

.contact__submit {
  grid-column: 1 / -1;
  justify-self: start;
  margin-top: 8px;
}

/* Footer */

.footer {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.footer__copy {
  font-size: 12px;
  color: var(--color-muted);
}

/* Modal */

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal--open {
  opacity: 1;
  visibility: visible;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(31, 31, 31, 0.5);
}

.modal__dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  padding: 40px 32px 32px;
  background: var(--color-white);
  border-radius: 16px;
  text-align: center;
}

.modal__close {
  position: absolute;
  top: 12px;
  right: 16px;
  border: none;
  background: none;
  font-size: 24px;
  line-height: 1;
  color: var(--color-muted);
  cursor: pointer;
  transition: color var(--transition);
}

.modal__close:hover {
  color: var(--color-dark);
}

.modal__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.modal__text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.modal__btn {
  min-width: 160px;
}

/* Responsive */

@media (max-width: 768px) {
  .page {
    padding: 20px 20px 40px;
  }

  .header {
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 36px;
  }

  .header__nav {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .header__nav .btn {
    min-width: 0;
    width: 100%;
  }

  .about__layout {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 24px;
  }

  .about__profile {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    text-align: left;
    gap: 0 20px;
    padding-top: 0;
  }

  .about__avatar {
    width: 100px;
    height: 100px;
    margin-bottom: 0;
  }

  .about__name,
  .about__role {
    width: calc(100% - 120px);
    margin-bottom: 4px;
  }

  .about__role {
    margin-bottom: 0;
  }

  .about__tagline {
    width: 100%;
    text-align: center;
    margin-top: 4px;
    padding-top: 16px;
  }

  .about__content {
    padding-top: 0;
  }

  .benefits__grid {
    grid-template-columns: 1fr;
  }

  .reviews__grid {
    grid-template-columns: 1fr;
  }

  .contact__form {
    grid-template-columns: 1fr;
    max-width: none;
  }

  .field:last-of-type {
    grid-column: auto;
  }

  .contact__submit {
    grid-column: auto;
    width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 48px;
    padding-bottom: 36px;
  }

  .hero__image {
    max-width: 300px;
    justify-self: center;
    order: -1;
  }
}

@media (max-width: 480px) {
  .logo__icon {
    width: 30px;
    height: 30px;
  }

  .logo__text {
    font-size: 18px;
  }

  .btn {
    min-width: 0;
    height: 40px;
    padding: 0 16px;
    font-size: 12px;
  }

  .header__nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .header__nav .btn {
    width: 100%;
  }

  .hero__btn {
    width: 100%;
  }

  .modal__dialog {
    padding: 36px 20px 24px;
  }
}