:root {
  --ink: #14110e;
  --paper: #f4ead6;
  --paper-2: #efe2c8;
  --anvar: #165e59;
  --anvar-deep: #0c3532;
  --dmitry: #a33b1c;
  --dmitry-deep: #6d2410;
  --line: #d8c9ae;
  --muted: #6b5e4e;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Manrope, system-ui, sans-serif;
  line-height: 1.5;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
}

h1,
h2,
h3,
.mark,
.eyebrow,
.name-card h2,
.portrait span,
.map-city {
  font-family: Unbounded, Manrope, sans-serif;
}

.paper-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.18;
  background-image: radial-gradient(var(--ink) 0.5px, transparent 0.6px);
  background-size: 3px 3px;
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, white);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.mark em {
  color: var(--dmitry);
  font-style: normal;
}

.mark-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 1.7rem;
  height: 1.7rem;
  overflow: hidden;
}

.mark-a,
.mark-b {
  display: block;
}

.mark-a {
  background: var(--anvar);
}

.mark-b {
  background: var(--dmitry);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav a {
  text-decoration: none;
}

.nav a:hover {
  color: var(--dmitry);
}

.nav-button,
.nav-close {
  display: none;
}

.hero {
  padding: 4.5rem 1.25rem 0;
  max-width: var(--max);
  margin: 0 auto;
}

.hero-kicker,
.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--dmitry);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.hero h1 span {
  display: block;
  color: var(--anvar);
}

.hero-lead {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  font-size: 1.12rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0 1.25rem;
  border: 0;
  text-decoration: none;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}

.btn-anvar {
  background: var(--anvar);
  color: var(--paper);
}

.btn-dmitry {
  background: var(--dmitry);
  color: var(--paper);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.ticker {
  overflow: hidden;
  margin: 3.5rem -1.25rem 0;
  border-block: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
}

.ticker-track {
  display: flex;
  width: max-content;
  gap: 0;
  animation: marquee 28s linear infinite;
}

.ticker-track span {
  padding: 0.7rem 0;
  font-family: Unbounded, sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  white-space: nowrap;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.names {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0;
}

.name-card {
  padding: 2rem 1.4rem 2.4rem;
  color: var(--paper);
}

.name-card-anvar {
  background: var(--anvar);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}

.name-card-dmitry {
  background: var(--dmitry);
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%);
  padding-left: 45px;
}

.name-card h2 {
  margin: 0.35rem 0 0.6rem;
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.05;
}

.ordinal,
.role {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.75;
  font-size: 0.72rem;
  font-weight: 700;
}

.name-card p:last-child {
  max-width: 28ch;
  margin: 1rem 0 0;
  opacity: 0.92;
}

.ampersand {
  display: grid;
  place-items: center;
  padding: 0 0.4rem;
  font-family: Unbounded, sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ink);
}

.duo,
.practice,
.steps,
.office,
.book {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 1.25rem 0;
}

.duo-intro h2,
.practice h2,
.office h2,
.book h2 {
  margin: 0;
  max-width: 18ch;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.1;
}

.duo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 1rem;
  margin-top: 2rem;
}

.portrait {
  display: grid;
  place-items: center;
  min-height: 280px;
  margin: 0;
  color: var(--paper);
}

.portrait span {
  font-size: 4.5rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.portrait figcaption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.portrait-anvar {
  background:
    linear-gradient(160deg, transparent 40%, var(--anvar-deep)),
    repeating-linear-gradient(-18deg, var(--anvar) 0 18px, var(--anvar-deep) 18px 20px);
}

.portrait-dmitry {
  background:
    linear-gradient(200deg, transparent 35%, var(--dmitry-deep)),
    repeating-linear-gradient(18deg, var(--dmitry) 0 18px, var(--dmitry-deep) 18px 20px);
}

.duo-copy p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.duo-points {
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.duo-points li {
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
}

.practice-list {
  margin-top: 1.5rem;
  border-top: 1px solid var(--ink);
}

.practice-list details {
  border-bottom: 1px solid var(--ink);
}

.practice-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
  cursor: pointer;
  list-style: none;
  font-family: Unbounded, sans-serif;
  font-size: 1.25rem;
}

.practice-list summary::-webkit-details-marker {
  display: none;
}

.practice-list summary::after {
  content: "+";
  color: var(--dmitry);
  font-size: 1.4rem;
}

.practice-list details[open] summary::after {
  content: "–";
}

.practice-list details p {
  max-width: 46rem;
  margin: 0 0 1.2rem;
  color: var(--muted);
}

.steps ol {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  padding-top: 1rem;
  border-top: 4px solid var(--anvar);
}

.steps li:nth-child(even) {
  border-top-color: var(--dmitry);
}

.steps span {
  font-family: Unbounded, sans-serif;
  color: var(--muted);
}

.steps h3 {
  margin: 0.4rem 0;
  font-size: 1.15rem;
}

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

.office {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: stretch;
}

.office address {
  margin: 1.2rem 0;
  font-style: normal;
  font-family: Unbounded, sans-serif;
  font-size: 1.35rem;
  line-height: 1.35;
}

.office-note {
  color: var(--muted);
}

.map {
  position: relative;
  padding: 1.5rem;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.map-city {
  position: absolute;
  right: 0.6rem;
  top: 0.2rem;
  margin: 0;
  font-size: 5rem;
  opacity: 0.12;
  letter-spacing: -0.04em;
}

.map ul {
  position: relative;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.map li {
  padding: 0.55rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--paper) 20%, transparent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
  opacity: 0.55;
}

.map li.is-here {
  opacity: 1;
  color: #f0c36a;
  font-family: Unbounded, sans-serif;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.map-pin {
  margin: 1.4rem 0 0;
  color: #f0c36a;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.book {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  padding-bottom: 4.5rem;
}

.form {
  display: grid;
  gap: 0.9rem;
  padding: 1.4rem;
  background: var(--paper-2);
  box-shadow: 12px 12px 0 var(--anvar);
}

.form-note,
.form-ok {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.form input,
.form select,
.form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  padding: 0.7rem 0.15rem;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  letter-spacing: 0;
  text-transform: none;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid var(--dmitry);
  outline-offset: 3px;
}

.form input:user-invalid,
.form select:user-invalid,
.form textarea:user-invalid {
  border-bottom-color: var(--dmitry);
}

.form .btn {
  justify-self: start;
  margin-top: 0.4rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding: 1.2rem 1.25rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.88rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .nav-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .nav-button-lines,
  .nav-button-lines::before,
  .nav-button-lines::after {
    display: block;
    width: 1.15rem;
    height: 2px;
    background: var(--ink);
  }

  .nav-button-lines {
    position: relative;
  }

  .nav-button-lines::before,
  .nav-button-lines::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .nav-button-lines::before {
    top: -5px;
  }

  .nav-button-lines::after {
    top: 5px;
  }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 1.4rem;
    padding: 2rem;
    background: var(--ink);
    color: var(--paper);
    font-size: 1.4rem;
    letter-spacing: 0.08em;
  }

  .nav-close {
    display: inline-block;
    margin-top: 1rem;
    cursor: pointer;
    color: #f0c36a;
  }

  .nav-toggle:checked ~ .site-header .nav {
    display: flex;
  }

  .names,
  .duo-grid,
  .steps ol,
  .office,
  .book {
    grid-template-columns: 1fr;
  }

  .name-card-anvar,
  .name-card-dmitry {
    clip-path: none;
  }

  .ampersand {
    padding: 0.4rem 0;
    font-size: 1.4rem;
  }

  .form {
    box-shadow: 8px 8px 0 var(--anvar);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .ticker-track {
    animation: none;
  }
}