:root {
  --desk: #d8dee6;
  --desk-dark: #c5cdd6;
  --sheet: #fffcf7;
  --sheet-edge: #f0ebe3;
  --ink: #1e252c;
  --muted: #5b6570;
  --line: #c9d0d8;
  --header: #4a5560;
  --orange: #e24a12;
  --orange-ink: #c43c0c;
  --orange-soft: #f6d4c6;
  --stamp: #b42318;
  --stamp-blue: #2c5aa0;
  --shadow: 0 14px 32px rgba(40, 48, 58, 0.12);
  --radius: 2px;
  --header-h: 72px;
  --max: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(226, 74, 18, 0.18) 0 8px, transparent 8px),
    repeating-linear-gradient(0deg, transparent, transparent 27px, rgba(90, 101, 112, 0.06) 28px),
    var(--desk);
  line-height: 1.55;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--orange-ink);
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 80;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
}

.skip:focus {
  top: 12px;
}

.route-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--header);
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.18rem 0.45rem;
  line-height: 1;
}

.route-chip span,
.route-chip.sm {
  color: var(--orange-ink);
}

.route-chip span {
  border-left: 1px solid var(--line);
  padding-left: 0.4rem;
  color: var(--orange-ink);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
  padding: 0.6rem 1.25rem;
  background: var(--header);
  color: #eef2f5;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.18);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}

.brand .route-chip {
  background: #3d4650;
  border-color: #6a7480;
  color: #d7dde4;
}

.brand .route-chip span {
  color: #ffb089;
  border-left-color: #6a7480;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-copy strong {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.brand-copy small {
  color: #c3ccd5;
  font-size: 0.75rem;
}

.nav {
  display: flex;
  gap: 0.35rem 1.1rem;
  margin-left: auto;
}

.nav a {
  color: #dce3ea;
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  color: #fff;
  border-bottom-color: var(--orange);
}

.header-end {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.langs {
  display: flex;
  border: 1px solid #6a7480;
}

.lang-btn {
  background: transparent;
  color: #d7dde4;
  border: 0;
  padding: 0.28rem 0.55rem;
  font: 600 0.75rem/1 "IBM Plex Mono", ui-monospace, monospace;
  cursor: pointer;
}

.lang-btn.is-active {
  background: var(--orange);
  color: #fff;
}

.menu {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid #6a7480;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.menu span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #eef2f5;
}

.hero,
.block,
.facts,
.site-footer {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
  gap: 2rem;
  padding: 2.4rem 0 1.5rem;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.7rem;
}

h1,
h2,
h3 {
  margin: 0 0 0.7rem;
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.55rem);
}

h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
}

h3 {
  font-size: 1.05rem;
}

.lede,
.section-head > p:last-child {
  margin: 0 0 1.1rem;
  color: var(--muted);
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  margin: 1.2rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1.1rem;
  background: var(--orange);
  color: #fff;
  text-decoration: none;
  border: 1px solid var(--orange-ink);
  font: 600 0.95rem/1 "Source Sans 3", sans-serif;
  cursor: pointer;
  box-shadow: 3px 3px 0 #2c333b;
}

.btn:hover {
  background: var(--orange-ink);
}

.btn.ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: 3px 3px 0 var(--desk-dark);
}

.mail {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.9rem;
  color: var(--ink);
}

.mail.lg {
  display: inline-block;
  font-size: 1.05rem;
  margin: 0.4rem 0 0.8rem;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 0;
}

.hero-meta div,
.facts > div {
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
}

.hero-meta dt,
.facts small,
.file-card dt,
.registry-sheet dt {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-meta dd,
.facts b,
.file-card dd,
.registry-sheet dd {
  margin: 0.15rem 0 0;
  font-weight: 650;
}

.form-desk,
.builder-desk,
.registry-desk {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  background:
    linear-gradient(90deg, transparent calc(50% - 3px), var(--orange) calc(50% - 3px) calc(50% + 3px), transparent calc(50% + 3px)),
    var(--desk-dark);
  padding: 0.9rem;
  border: 1px solid #b7c0c9;
}

.sheet {
  position: relative;
  background: var(--sheet);
  border: 1px solid #d7d0c6;
  box-shadow: var(--shadow);
  padding: 1rem 1.05rem 1.15rem;
}

.waybill {
  background:
    repeating-linear-gradient(var(--sheet) 0 26px, rgba(44, 90, 160, 0.05) 26px 27px);
}

.sheet-head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.45rem;
  margin-bottom: 0.7rem;
}

.box-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.box {
  border: 1px solid var(--ink);
  padding: 0.4rem 0.5rem;
  background: rgba(255, 255, 255, 0.72);
}

.box small {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.box b,
.box span {
  display: block;
  font-size: 0.82rem;
}

.sheet-note,
.out-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0.7rem 0 1.6rem;
}

.stamp-box {
  position: absolute;
  right: 0.8rem;
  bottom: 0.7rem;
  display: inline-grid;
  place-items: center;
  min-width: 7.2rem;
  min-height: 2.4rem;
  padding: 0.25rem 0.4rem;
  border: 2px solid var(--stamp);
  color: var(--stamp);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: rotate(-8deg);
  box-shadow: inset 0 0 0 1px var(--stamp);
  background: rgba(255, 252, 247, 0.55);
}

.stamp-box.stamp-blue {
  border-color: var(--stamp-blue);
  color: var(--stamp-blue);
  box-shadow: inset 0 0 0 1px var(--stamp-blue);
  transform: rotate(7deg);
}

.stamp-box.lg {
  position: static;
  min-width: 9rem;
  min-height: 3rem;
  font-size: 0.85rem;
  margin-bottom: 0.8rem;
}

.proof {
  background: #fff;
}

.proof-frame {
  border: 1px dashed #9aa4ae;
  min-height: 6.5rem;
  padding: 0.85rem;
  margin-bottom: 0.65rem;
}

.proof-frame p {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.crop {
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
}

.crop.tl,
.crop.tr,
.crop.bl,
.crop.br {
  border-color: #7b858f;
}

.crop.tl {
  top: 4px;
  left: 4px;
  border-top: 1px solid;
  border-left: 1px solid;
}

.crop.tr {
  top: 4px;
  right: 4px;
  border-top: 1px solid;
  border-right: 1px solid;
}

.crop.bl {
  bottom: 4px;
  left: 4px;
  border-bottom: 1px solid;
  border-left: 1px solid;
}

.crop.br {
  bottom: 4px;
  right: 4px;
  border-bottom: 1px solid;
  border-right: 1px solid;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  padding-bottom: 0.4rem;
}

.facts > div {
  display: grid;
  gap: 0.25rem;
}

.hero,
.hero,
.block {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.block {
  padding: 2.4rem 0;
}

.block.tint {
  background: rgba(255, 252, 247, 0.42);
  width: 100%;
  padding-inline: max(1rem, calc((100% - var(--max)) / 2));
}

.section-head {
  margin-bottom: 1.2rem;
}

.split-copy,
.split-block,
.contact {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.2rem;
  align-items: start;
}

.split-block {
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 1.3rem;
}

.split-block.alt {
  background: #f4f6f8;
}

.col-proof {
  margin: 0;
  padding: 0.9rem 0.9rem 0.9rem 1.4rem;
  border-left: 4px solid var(--orange);
  background: #fff;
}

.col-proof li {
  margin: 0.35rem 0;
}

.file-card {
  margin: 0;
}

.file-card > div,
.registry-sheet > div {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0;
}

.notice-row,
.code-grid,
.doc-grid,
.steps,
.people-grid {
  display: grid;
  gap: 0.8rem;
}

.notice-row,
.steps,
.doc-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.code-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.code-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 1rem;
  min-height: 100%;
}

.code-card:hover {
  border-color: var(--orange);
}

.code-card b {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 1.35rem;
  margin: 0.45rem 0 0.3rem;
}

.code-card.primary {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.steps article {
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.9rem;
}

.steps b,
.doc-grid span {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  color: var(--orange-ink);
}

.route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.route-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: start;
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.85rem 1rem;
}

.limit-list {
  columns: 2;
  gap: 1.5rem;
  margin: 0;
  padding-left: 1.1rem;
}

.limit-list li {
  break-inside: avoid;
  margin: 0.4rem 0;
}

.builder-form fieldset {
  border: 1px solid var(--ink);
  margin: 0 0 0.9rem;
  padding: 0.7rem;
}

.builder-form legend {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.35rem;
  font-weight: 650;
}

.choice-grid {
  display: grid;
  gap: 0.4rem;
}

.choice-grid label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem;
  align-items: start;
  padding: 0.35rem 0.4rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  cursor: pointer;
}

.choice-grid input:checked + span {
  font-weight: 650;
}

.field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.field span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 650;
}

input,
select,
textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  border: 1px solid var(--ink);
  background: #fff;
  padding: 0.55rem 0.65rem;
}

textarea {
  resize: vertical;
  min-height: 5.2rem;
}

.builder-out {
  min-height: 100%;
}

.output-head {
  display: flex;
  justify-content: space-between;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.4rem;
  margin-bottom: 0.7rem;
}

#summary {
  white-space: pre-wrap;
  min-height: 14rem;
  margin: 0 0 0.9rem;
  font: 0.85rem/1.5 "IBM Plex Mono", ui-monospace, monospace;
  background: #fff;
  border: 1px dashed #9aa4ae;
  padding: 0.8rem;
}

.output-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.registry-desk {
  align-items: stretch;
}

.registry-sheet {
  margin: 0;
}

.stamp-panel {
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.4rem;
  min-height: 220px;
}

.people-grid {
  grid-template-columns: 1fr 1fr;
  margin-top: 1.2rem;
}

.split-block + .split-block {
  margin-top: 0.8rem;
}

.builder-form .btn {
  margin-top: 0.2rem;
}

.role {
  margin: 0.45rem 0 0.2rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.faq-list details {
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.5rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 650;
}

.contact-form label {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
}

.consent {
  grid-template-columns: auto 1fr;
  align-items: start;
}

.consent input {
  width: auto;
  margin-top: 0.25rem;
}

.form-status {
  min-height: 1.3rem;
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 1.4rem 0 2.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0.25rem 0;
}

@media (max-width: 1180px) and (min-width: 861px) {
  .nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.15rem 0.7rem;
    max-width: 42rem;
  }

  .nav a {
    font-size: 0.84rem;
  }
}

@media (max-width: 980px) {
  .hero,
  .split-copy,
  .split-block,
  .contact,
  .form-desk,
  .builder-desk,
  .registry-desk,
  .code-grid,
  .people-grid,
  .facts,
  .hero-meta {
    grid-template-columns: 1fr;
  }

  .form-desk,
  .builder-desk,
  .registry-desk {
    background: var(--desk-dark);
  }

  .limit-list {
    columns: 1;
  }
}

@media (max-width: 860px) {
  .brand-copy small {
    display: none;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: #3d4650;
    padding: 0.4rem 0 0.8rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.75rem 1.2rem;
    border-bottom: 0;
    border-left: 3px solid transparent;
  }

  .nav a.active,
  .nav a:hover {
    background: #333c45;
    border-left-color: var(--orange);
  }

  .menu {
    display: block;
  }

  .brand-copy strong {
    font-size: 0.8rem;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-inline: 0.75rem;
    gap: 0.45rem;
  }

  .brand-copy strong {
    font-size: 0.74rem;
    letter-spacing: 0.02em;
  }

  .hero-actions,
  .output-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .box-row {
    grid-template-columns: 1fr;
  }
}

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