:root {
  --paper: #FAF8F3;
  --white: #FFFFFF;
  --beige: #EFE9DD;
  --line: #D8CFBF;
  --line-strong: #B9AE9A;
  --ink: #161616;
  --graphite: #5C5850;
  --blue: #2340C8;
  --heat: #C9782A;
  --error: #B3261E;

  --display: 'Sofia Sans Condensed', 'Arial Narrow', sans-serif;
  --body: 'Onest', 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;

  --wrap: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --section-y: clamp(64px, 8vw, 112px);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.55 var(--body);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
h1, h2, h3 { margin: 0; font-family: var(--display); font-weight: 600; line-height: 1.05; }
h2 { font-size: clamp(34px, 4.2vw, 54px); letter-spacing: -0.01em; }
h3 { font-size: 23px; line-height: 1.15; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; padding: 8px 14px; background: var(--ink); color: var(--white); }
.skip:focus { left: 8px; }

/* Кнопки */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font: 500 16px/1 var(--body);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn--dark { background: var(--ink); color: var(--white); }
.btn--dark:hover { background: var(--blue); border-color: var(--blue); }
.btn--line:hover { background: var(--ink); color: var(--white); }
.btn[disabled] { opacity: .55; cursor: progress; }

/* Шапка */

.header { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--line); }
.header__inner { display: flex; align-items: center; gap: 28px; min-height: 68px; }

.logo { display: flex; align-items: center; gap: 9px; font: 700 23px/1 var(--display); text-decoration: none; }
.logo svg { width: 28px; height: 20px; color: var(--blue); }

.nav { display: flex; gap: 24px; margin-right: auto; }
.nav a { font-size: 15px; text-decoration: none; white-space: nowrap; }
.nav a:hover { text-decoration: underline; }

.header__phone { font: 600 18px/1 var(--display); text-decoration: none; white-space: nowrap; }
.header__cta { min-height: 42px; padding: 0 18px; font-size: 15px; }

.burger { display: none; position: relative; width: 44px; height: 44px; margin-left: auto; border: 0; background: none; cursor: pointer; }
.burger span, .burger::before, .burger::after { content: ''; position: absolute; left: 10px; right: 10px; height: 2px; background: var(--ink); transition: transform .2s, opacity .2s; }
.burger span { top: 21px; }
.burger::before { top: 14px; }
.burger::after { top: 28px; }
.burger[aria-expanded="true"] span { opacity: 0; }
.burger[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

/* Первый экран */

.hero { padding: clamp(40px, 6vw, 72px) 0 var(--section-y); }
.hero__title { max-width: 17ch; font-size: clamp(46px, 6.6vw, 96px); font-weight: 700; line-height: .94; letter-spacing: -0.015em; }

.hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); margin-top: clamp(28px, 3vw, 44px); align-items: end; }
.hero__lead { font-size: clamp(18px, 1.5vw, 20px); max-width: 28em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero__small { margin-top: 20px; font-size: 14px; color: var(--graphite); }

.hero__figure { margin: 0; width: 100%; max-width: 540px; justify-self: end; }
.former { width: 100%; height: auto; }
.former .dim path { fill: none; stroke: var(--blue); stroke-width: 1.2; }
.former .dim text, .former__label text { font: 400 15px var(--mono); }
.former .dim text { fill: var(--blue); }
.former__label text { fill: var(--graphite); }
.hero__figure figcaption { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 13px; color: var(--graphite); }

/* Секции */

.section { padding: var(--section-y) 0; border-top: 1px solid var(--line); }
.section--beige { background: var(--beige); border-top-color: transparent; }

.split { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(24px, 5vw, 80px); align-items: end; margin-bottom: clamp(36px, 5vw, 64px); }
.split--top { align-items: start; margin-bottom: 0; }
.split__text { color: var(--graphite); max-width: 38em; }

/* Каталог изделий */

.catalog { list-style: none; margin: 0; padding: 0; border-bottom: 1.5px solid var(--ink); }
.item { display: grid; grid-template-columns: 200px 1fr 190px; gap: clamp(20px, 4vw, 56px); align-items: center; padding: 30px 0; border-top: 1.5px solid var(--ink); }
.item + .item { border-top: 1px solid var(--line); }
.item__draw { width: 100%; height: auto; }
.item__draw .p { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; }
.item__draw .p--thin { stroke-width: 1.2; stroke: var(--graphite); }
.item__draw .d path { fill: none; stroke: var(--blue); stroke-width: 1; }
.item__draw .d text { font: 400 10px var(--mono); fill: var(--blue); text-anchor: middle; }
.item__body p { margin-top: 8px; color: var(--graphite); max-width: 40em; }
.item__spec { font: 400 14px/1.6 var(--mono); }

/* Материалы */

.materials-grid { display: grid; grid-template-columns: 1fr 340px; gap: clamp(24px, 3vw, 40px); align-items: start; }
.table-scroll { overflow-x: auto; }

.materials, .works { width: 100%; border-collapse: collapse; border-top: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); }
.materials { min-width: 680px; }
.works { min-width: 880px; }
.materials th, .materials td, .works th, .works td { padding: 15px 18px 15px 0; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); font-size: 16px; }
.materials thead th, .works thead th { padding-top: 12px; padding-bottom: 12px; font-size: 13px; font-weight: 500; color: var(--graphite); border-bottom-color: var(--ink); }
.materials tbody th { font: 600 19px/1.2 var(--display); white-space: nowrap; }
.n { font-family: var(--mono); font-size: 15px !important; white-space: nowrap; }
.works td:first-child { color: var(--graphite); }

.stamp { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 0; border: 1.5px solid var(--ink); background: var(--ink); }
.stamp > div { padding: 12px 14px 14px; background: var(--paper); }
.stamp__wide { grid-column: 1 / -1; }
.stamp dt { font-size: 12px; color: var(--graphite); }
.stamp dd { margin: 4px 0 0; font: 600 22px/1.15 var(--display); }

/* График заказа */

.gantt { --days: 18; margin: 0 0 clamp(48px, 6vw, 80px); }
.gantt__scale, .gantt__rows li { display: grid; grid-template-columns: 240px 1fr 90px; gap: 20px; }
.gantt__scale { position: relative; height: 22px; font: 400 12px var(--mono); color: var(--graphite); }
.gantt__scale span { position: absolute; left: calc(260px + (100% - 370px) * var(--d) / var(--days)); white-space: nowrap; }
.gantt__scale span:last-child { transform: translateX(-100%); }
.gantt__rows { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); }
.gantt__rows li { align-items: center; min-height: 48px; border-bottom: 1px solid var(--line); }
.gantt__rows li:last-child { border-bottom: 0; }
.gantt__name { font-size: 15px; }
.gantt__bar {
  position: relative;
  align-self: stretch;
  background-image: linear-gradient(to right, var(--line) 1px, transparent 1px);
  background-size: calc(100% / var(--days)) 100%;
}
.gantt__bar::after {
  content: '';
  position: absolute;
  top: 50%;
  height: 14px;
  margin-top: -7px;
  left: calc(100% * var(--from) / var(--days));
  width: calc(100% * (var(--to) - var(--from)) / var(--days));
  background: var(--ink);
}
.gantt__bar--client::after, .legend--client {
  background: repeating-linear-gradient(-45deg, var(--ink) 0 2px, transparent 2px 5px);
  outline: 1px solid var(--ink);
  outline-offset: -1px;
}
.gantt__days { font: 400 13px var(--mono); color: var(--graphite); text-align: right; }
.gantt figcaption { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-size: 13px; color: var(--graphite); }
.legend { display: inline-block; width: 22px; height: 12px; }

.terms { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(24px, 5vw, 80px); margin: 0; }
.terms > div { padding: 22px 0 26px; border-top: 1px solid var(--ink); }
.terms dt { font: 600 22px/1.2 var(--display); }
.terms dd { margin: 8px 0 0; color: var(--graphite); }

/* Форма расчёта */

.calc { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.calc__intro { position: sticky; top: 100px; }
.calc__intro p { margin-top: 18px; color: var(--graphite); }
.calc__alt { padding-top: 18px; border-top: 1px solid var(--line); }
.calc__alt a { color: var(--blue); font-weight: 500; }

.form { display: grid; gap: 18px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.field { display: grid; gap: 6px; min-width: 0; }
.field > span { font-size: 14px; font-weight: 500; }
.field em { font-style: normal; font-weight: 400; color: var(--graphite); margin-left: 4px; }
.field--short { max-width: 300px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  resize: vertical;
}
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(-45deg, transparent 50%, var(--ink) 50%);
  background-position: right 20px center, right 15px center;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.field input[aria-invalid="true"] { border-color: var(--error); box-shadow: inset 0 0 0 1px var(--error); }
.field ::placeholder { color: #A39A8B; }

.drop { position: relative; border: 1.5px dashed var(--line-strong); background: var(--white); transition: border-color .15s, background-color .15s; }
.drop.is-over { border-color: var(--blue); background: #F2F4FC; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop input:focus-visible + .drop__label { outline: 2px solid var(--blue); outline-offset: -4px; }
.drop__label { display: grid; gap: 2px; padding: 20px 18px; cursor: pointer; }
.drop__label b { font-weight: 500; color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.drop__label span { font-size: 14px; color: var(--graphite); }
.drop__list { list-style: none; margin: 0; padding: 0 18px 14px; display: grid; gap: 6px; }
.drop__list li { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
.drop__list .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.drop__list .size { font: 400 13px var(--mono); color: var(--graphite); }
.drop__list button { border: 0; background: none; padding: 4px; color: var(--graphite); font: inherit; font-size: 13px; text-decoration: underline; cursor: pointer; }
.drop__list button:hover { color: var(--error); }

.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--graphite); cursor: pointer; }
.consent input { width: 18px; height: 18px; margin: 1px 0 0; flex: none; accent-color: var(--ink); }
.consent.is-invalid { color: var(--error); }

.form__submit { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.form__error { color: var(--error); font-size: 14px; max-width: 34em; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

.form-success { padding: 28px 0; border-top: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); }
.form-success h3 { font-size: 30px; }
.form-success p { margin-top: 10px; color: var(--graphite); max-width: 34em; }

/* Вопросы */

.faq { border-bottom: 1px solid var(--ink); }
.faq__item { border-top: 1px solid var(--ink); }
.faq__item summary { position: relative; padding: 20px 44px 20px 0; list-style: none; cursor: pointer; font: 600 21px/1.25 var(--display); }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before, .faq__item summary::after { content: ''; position: absolute; right: 4px; top: 50%; width: 16px; height: 1.5px; background: var(--ink); transition: transform .2s; }
.faq__item summary::after { transform: rotate(90deg); }
.faq__item[open] summary::after { transform: rotate(0); }
.faq__item p { padding: 0 44px 22px 0; color: var(--graphite); max-width: 42em; }

/* Подвал */

.footer { padding: clamp(56px, 7vw, 88px) 0 28px; background: var(--white); border-top: 1.5px solid var(--ink); }
.footer__grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
.footer__label { font-size: 13px; color: var(--graphite); margin-bottom: 8px; }
.footer__big { font: 600 clamp(24px, 2.4vw, 32px)/1.15 var(--display); text-decoration: none; word-break: break-word; }
.footer__big:hover { color: var(--blue); }
.footer__addr { font: 600 21px/1.3 var(--display); }
.footer__note { margin-top: 10px; font-size: 14px; color: var(--graphite); }
.footer__note a { color: var(--blue); }
.footer__bottom { display: flex; flex-wrap: wrap; gap: 8px 32px; margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13px; color: var(--graphite); }
.footer__bottom p:last-child { margin-left: auto; }

/* Окно звонка */

.modal { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(22, 22, 22, .5); }
.modal__box { position: relative; width: 100%; max-width: 440px; max-height: calc(100vh - 40px); overflow: auto; padding: 32px 30px 28px; background: var(--paper); border: 1.5px solid var(--ink); }
.modal__box h2 { font-size: 34px; padding-right: 36px; }
.modal__lead { margin: 10px 0 22px; font-size: 15px; color: var(--graphite); }
.modal__close { position: absolute; top: 10px; right: 10px; width: 40px; height: 40px; border: 0; background: none; font-size: 28px; line-height: 1; cursor: pointer; }
.modal__close:hover { color: var(--blue); }

.mobile-bar { display: none; }

/* Адаптив */

@media (max-width: 1180px) {
  .nav { gap: 18px; }
  .header__cta { display: none; }
}

@media (max-width: 960px) {
  .burger { display: block; }
  .header__phone { margin-left: auto; }
  .burger { margin-left: 0; }
  .nav {
    position: fixed; inset: 68px 0 auto 0;
    flex-direction: column; gap: 0;
    padding: 0 var(--gutter) 16px;
    background: var(--paper);
    border-bottom: 1.5px solid var(--ink);
    visibility: hidden; opacity: 0;
    transition: opacity .15s, visibility .15s;
  }
  .nav.is-open { visibility: visible; opacity: 1; }
  .nav a { padding: 15px 0; font-size: 18px; border-bottom: 1px solid var(--line); }

  .hero__grid, .split, .calc, .materials-grid { grid-template-columns: 1fr; }
  .hero__grid { align-items: start; }
  .split { align-items: start; }
  .calc__intro { position: static; }
  .stamp { max-width: 420px; }
  .item { grid-template-columns: 140px 1fr; }
  .item__spec { grid-column: 2; }
  .gantt__scale, .gantt__rows li { grid-template-columns: 180px 1fr 70px; gap: 14px; }
  .gantt__scale span { left: calc(194px + (100% - 278px) * var(--d) / var(--days)); }
  .footer__grid { grid-template-columns: 1fr 1fr; }

  body { padding-bottom: 76px; }
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 1.5fr; gap: 8px;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
    background: var(--paper);
    border-top: 1.5px solid var(--ink);
  }
  .mobile-bar .btn { min-height: 48px; padding: 0 12px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .header__phone { font-size: 16px; }
  .hero__actions .btn { width: 100%; }
  .item { grid-template-columns: 1fr; gap: 14px; padding: 24px 0; }
  .item__draw { max-width: 180px; }
  .item__spec { grid-column: auto; }
  .form__row, .terms, .footer__grid { grid-template-columns: 1fr; }
  .field--short { max-width: none; }
  .gantt__scale { display: none; }
  .gantt__rows li { grid-template-columns: 1fr auto; grid-template-rows: auto 22px; gap: 4px 12px; padding: 10px 0; }
  .gantt__bar { grid-column: 1 / -1; grid-row: 2; }
  .gantt__days { grid-row: 1; grid-column: 2; }
  .former .dim text, .former__label text { font-size: 20px; }
  .footer__bottom p:last-child { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}