:root {
  --plaster: #f3f4f1;
  --ink: #17211c;
  --fir: #12352c;
  --fir-deep: #0c2822;
  --on-fir: #f7f8f6;
  --muted: #3e5248;
  --line: #d5dbd4;
  --danger: #8f2d2d;
  --font-display: "Unbounded", "Arial Narrow", sans-serif;
  --font-text: "Onest", "Segoe UI", sans-serif;
  --wrap: 1120px;
  --header: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 16px);
}

body {
  margin: 0;
  background: var(--plaster);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 1.0625rem;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

::selection {
  background: #c9ddd4;
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--fir);
  outline-offset: 3px;
}

body,
input,
textarea,
select,
button {
  caret-color: var(--fir);
}

* {
  scrollbar-color: var(--fir) var(--plaster);
}

.wrap {
  width: min(var(--wrap), calc(100% - 48px));
  margin-inline: auto;
}

h1,
h2,
h3,
.offer__price {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h1 {
  margin: 0;
  max-width: 14em;
  font-size: clamp(2.4rem, 5.4vw, 4.6rem);
}

.nowrap {
  white-space: nowrap;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: var(--header);
  color: var(--on-fir);
  background: transparent;
  transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.header.is-scrolled,
.header:has(.nav.is-open) {
  color: var(--ink);
  background: color-mix(in srgb, var(--plaster) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header__bar,
.footer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: inherit;
}

.brand__marks {
  position: relative;
  display: inline-grid;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.brand__mark {
  grid-area: 1 / 1;
  width: 28px;
  height: 28px;
  object-fit: contain;
  background: transparent;
  transition: opacity 0.35s ease;
}

/* На герое — белый CS; после прокрутки / открытом меню — сине-чёрный */
.brand__mark--light {
  opacity: 1;
}

.brand__mark--dark {
  opacity: 0;
}

.header.is-scrolled .brand__mark--light,
.header:has(.nav.is-open) .brand__mark--light {
  opacity: 0;
}

.header.is-scrolled .brand__mark--dark,
.header:has(.nav.is-open) .brand__mark--dark {
  opacity: 1;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav__link {
  color: inherit;
  opacity: 0.78;
  font-size: 0.95rem;
  text-decoration: none;
}

.nav__link:hover {
  opacity: 1;
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.burger span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100svh;
  padding: calc(var(--header) + 28px) 0 48px;
  color: var(--on-fir);
  overflow: hidden;
}

.hero__motion,
.break {
  overflow: hidden;
}

.hero__motion {
  position: absolute;
  inset: 0;
  transform: translate3d(0, var(--drift, 0px), 0);
}

.hero__photo,
.break__photo {
  position: absolute;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.hero__photo {
  inset: -8%;
  background-image: url("../img/hero-desk.jpg");
  background-position: 18% center;
  transform: scale(1.08);
}

.js .hero__photo {
  animation: photo-in 1.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 22, 18, 0.78) 0%, rgba(12, 22, 18, 0.42) 48%, rgba(12, 22, 18, 0.12) 100%);
}

.hero__layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.75fr);
  column-gap: 36px;
  row-gap: 28px;
  align-items: start;
}

.hero h1,
.hero .lede {
  color: var(--on-fir);
}

.hero .lede {
  color: #d7e3dc;
}

.thread {
  padding: 22px;
  background: color-mix(in srgb, var(--plaster) 92%, transparent);
  color: var(--ink);
}

.thread__kicker {
  color: var(--muted);
  font-size: 0.95rem;
}

.thread__text {
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero .offer__item {
  color: var(--on-fir);
}

.hero .offer__item.is-selected {
  background: var(--plaster);
  color: var(--ink);
}

.js .thread__text.is-in {
  animation: note-in 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.break {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  padding: 48px 0;
  color: var(--on-fir);
}

.break__photo {
  inset: 0;
  background-image: url("../img/cafe-window.jpg");
  transform: scale(1.06);
}

.break::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 28, 24, 0.15), rgba(16, 28, 24, 0.72));
}

.break .wrap {
  position: relative;
  z-index: 1;
}

.break p {
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

@keyframes photo-in {
  from { transform: scale(1.16); }
  to { transform: scale(1.08); }
}

@keyframes note-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.lede,
.block__lead {
  max-width: 62ch;
  margin-top: 20px;
  color: var(--muted);
}

.sample {
  max-width: 62ch;
  margin-top: 14px;
  color: var(--ink);
}

.offer {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 48px;
}

.offer__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  min-height: 0;
  padding: 16px 8px 8px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  font: inherit;
}

.offer__item.is-selected {
  padding: 22px;
  background: var(--plaster);
  color: var(--ink);
  transition: background 0.35s ease, color 0.35s ease;
}

.offer__name,
.offer__term {
  font-family: var(--font-text);
  font-size: 1rem;
  letter-spacing: 0;
  line-height: 1.4;
}

.offer__price {
  font-size: clamp(1.7rem, 2.8vw, 2.7rem);
  font-weight: 500;
  white-space: nowrap;
}

.hero__copy {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
}

.hero .thread {
  grid-column: 2;
  grid-row: 1;
  align-self: end;
  width: 100%;
  min-width: 0;
}

.hero .offer {
  grid-column: 1 / -1;
  grid-row: 2;
  width: 100%;
}

.hero .btn {
  grid-column: 1 / -1;
  grid-row: 3;
  justify-self: start;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 28px;
  padding: 16px 22px;
  border: 0;
  background: var(--fir);
  color: var(--on-fir);
  font: 600 1rem/1 var(--font-text);
  text-decoration: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--fir-deep);
}

.btn--light {
  background: var(--plaster);
  color: var(--ink);
}

.btn--light:hover {
  background: #fff;
}

.block {
  padding: 72px 0;
}

.block--sheet {
  background: #e7ebe6;
}

.tasks,
.formats,
.steps {
  display: grid;
  gap: 28px 40px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.tasks,
.formats {
  grid-template-columns: 1fr 1fr;
}

.tasks li,
.formats li,
.steps li {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.tasks p,
.formats p,
.steps p,
.contacts span {
  color: var(--muted);
}

.steps {
  grid-template-columns: repeat(4, 1fr);
  counter-reset: step;
}

.steps li {
  counter-increment: step;
}

.steps h3::before {
  content: counter(step) ". ";
}

.sheet {
  margin-top: 32px;
}

.sheet__row {
  display: grid;
  grid-template-columns: 1.35fr repeat(4, 0.65fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.sheet__head {
  color: var(--muted);
  font-size: 0.95rem;
}

.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contacts {
  display: grid;
  gap: 18px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.contacts a {
  display: block;
  margin-top: 2px;
  color: var(--fir);
  font-weight: 600;
  text-underline-offset: 3px;
}

.form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-size: 0.95rem;
  font-weight: 500;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--plaster);
  color: var(--ink);
  font: inherit;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 2px solid var(--fir);
  outline-offset: 0;
  border-color: var(--fir);
}

.field__error,
.form__miss {
  color: var(--danger);
  font-size: 0.95rem;
}

.form__ok {
  color: var(--fir);
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-color: var(--danger);
}

.footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.footer a {
  color: var(--ink);
}

.js .block,
.js .break p {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js .block.is-in,
.js .break.is-in p {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .tasks,
  .formats,
  .steps,
  .contact,
  .offer,
  .hero__layout {
    grid-template-columns: 1fr;
  }

  .hero__shade {
    background: linear-gradient(180deg, rgba(16, 28, 24, 0.55), rgba(16, 28, 24, 0.78));
  }

  .hero__copy,
  .hero .thread,
  .hero .offer,
  .hero .btn {
    grid-column: 1;
    grid-row: auto;
  }

  .steps {
    gap: 20px;
  }

  .sheet__row {
    grid-template-columns: 1.35fr repeat(4, 0.7fr);
    font-size: 0.92rem;
  }
}

@media (max-width: 420px) {
  .hero h1 .nowrap {
    white-space: normal;
  }
}

@media (max-width: 720px) {
  .wrap {
    width: min(var(--wrap), calc(100% - 32px));
  }

  .burger {
    display: block;
  }

  .nav {
    position: fixed;
    inset: var(--header) 0 auto 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 16px;
    background: var(--plaster);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav__link {
    padding: 14px 0;
    border-top: 1px solid var(--line);
    color: var(--ink);
  }

  .burger.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .burger.is-open span:nth-child(2) {
    opacity: 0;
  }

  .burger.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .burger span {
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .offer__item {
    min-height: 0;
    padding: 8px 0 16px;
    border-top: 1px solid var(--line);
  }

  .offer__item.is-selected {
    border-top-color: transparent;
  }

  .sheet__row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .sheet__head {
    display: none;
  }

  .sheet__row span:not(:first-child)::before {
    color: var(--muted);
    font-size: 0.85rem;
  }

  .sheet__row span:nth-child(2)::before { content: "Лендинг: "; }
  .sheet__row span:nth-child(3)::before { content: "Сайт: "; }
  .sheet__row span:nth-child(4)::before { content: "MAX: "; }
  .sheet__row span:nth-child(5)::before { content: "Поддержка: "; }

  .footer__bar {
    align-items: flex-start;
    flex-direction: column;
    height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .burger span,
  .header,
  .offer__item.is-selected { transition: none; }
  .js .hero__photo,
  .js .thread__text { animation: none; }
  .js .block,
  .js .break p,
  .js .block.is-in,
  .js .break.is-in p {
    opacity: 1;
    transform: none;
  }
}