/* ГУРУ — публичный сайт.
   Концепция: графитовая сцена, латунь как единственный акцент, огромное слово-логотип в духе витрины. */
:root {
  --ink: #0b0b0d;
  --ink-2: #111115;
  --ink-3: #18181d;
  --line: rgba(236, 233, 226, .1);
  --line-2: rgba(236, 233, 226, .2);
  --fg: #ece9e2;
  --mut: #9b978e;
  --brass: #c9a96e;
  --brass-2: #ead7aa;
  --display: "Unbounded", "Montserrat", "Arial Black", sans-serif;
  --body: "Onest", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --gutter: clamp(18px, 4.2vw, 64px);
  --max: 1440px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--ink); color: var(--fg);
  font: 400 1rem/1.65 var(--body); -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }
::selection { background: var(--brass); color: var(--ink); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--brass); color: var(--ink); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Шапка ---------- */
.top {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px var(--gutter);
  background: linear-gradient(to bottom, rgba(11, 11, 13, .92), rgba(11, 11, 13, .55) 70%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: background .3s, border-color .3s; border-bottom: 1px solid transparent;
}
.top.is-stuck { background: rgba(11, 11, 13, .9); border-bottom-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; font: 500 1rem/1 var(--display); letter-spacing: .08em; }
.brand-mark { width: 22px; height: 22px; position: relative; flex: none; }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: var(--brass); }
.brand-mark::before { inset: 0 0 auto 0; height: 4px; }
.brand-mark::after { inset: 0 auto 0 0; width: 4px; box-shadow: 14px 7px 0 0 var(--brass); height: 100%; }
.nav { display: flex; align-items: center; gap: clamp(18px, 3vw, 40px); font-size: .95rem; }
.nav a { color: var(--mut); transition: color .2s; }
.nav a:hover { color: var(--fg); }
.nav .nav-cta { color: var(--ink); background: var(--brass); padding: 10px 18px; font-weight: 500; transition: background .2s; }
.nav .nav-cta:hover { background: var(--brass-2); color: var(--ink); }
.burger { display: none; width: 44px; height: 44px; background: none; border: 1px solid var(--line-2); cursor: pointer; position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--fg); transition: transform .25s, top .25s; }
.burger span:first-child { top: 17px; } .burger span:last-child { top: 25px; }
.burger[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 21px; transform: rotate(-45deg); }

/* ---------- Герой ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(120px, 17vh, 170px) var(--gutter) clamp(48px, 7vw, 96px);
  max-width: var(--max); margin: 0 auto;
}
.hero-glow {
  position: absolute; inset: -20% -10% auto; height: 80%;
  background: radial-gradient(circle at var(--mx, 35%) var(--my, 30%), rgba(201, 169, 110, .13), transparent 46%);
  pointer-events: none;
}
.kicker { position: relative; font: 500 .78rem/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--brass); }
.hero-word {
  position: relative; margin: clamp(10px, 2vw, 24px) 0 clamp(28px, 5vw, 64px);
  font: 300 clamp(4.5rem, 21vw, 21rem)/.9 var(--display); letter-spacing: -.045em;
  color: rgba(236, 233, 226, .1);
  background: radial-gradient(circle 38vw at var(--mx, 30%) var(--my, 40%), var(--brass-2), rgba(236, 233, 226, .55) 38%, rgba(236, 233, 226, .12) 74%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  user-select: none; white-space: nowrap;
}
.hero-bottom { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 84px); align-items: end; }
.hero h1 { font: 400 clamp(1.5rem, 3vw, 2.7rem)/1.2 var(--display); letter-spacing: -.02em; text-wrap: balance; }
.hero-side { display: grid; gap: 26px; }
.hero-side p { color: var(--mut); max-width: 52ch; font-size: 1.04rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 15px 28px; font-weight: 500; border: 1px solid transparent; cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s; }
.btn-solid { background: var(--brass); color: var(--ink); }
.btn-solid:hover { background: var(--brass-2); }
.btn-line { border-color: var(--line-2); }
.btn-line:hover { border-color: var(--brass); color: var(--brass-2); }
.btn-wide { width: 100%; }
.btn:active { transform: translateY(1px); }

/* ---------- Масштаб ---------- */
.scale { border-block: 1px solid var(--line); background: var(--ink-2); }
.scale-row { max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.scale-row > div { padding: clamp(24px, 3.4vw, 44px) clamp(14px, 2vw, 28px); border-left: 1px solid var(--line); display: grid; gap: 6px; }
.scale-row > div:first-child { border-left: 0; padding-left: 0; }
.scale b { font: 300 clamp(1.7rem, 3.6vw, 3.1rem)/1 var(--display); letter-spacing: -.03em; color: var(--brass-2); font-variant-numeric: tabular-nums; }
.scale span { font: 400 .74rem/1.4 var(--mono); color: var(--mut); text-transform: uppercase; letter-spacing: .08em; }

/* ---------- Блоки ---------- */
.block { max-width: var(--max); margin: 0 auto; padding: clamp(64px, 9vw, 132px) var(--gutter) 0; }
.block-head { display: grid; gap: 16px; margin-bottom: clamp(32px, 4.6vw, 64px); max-width: 880px; }
.eyebrow { font: 500 .78rem/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--brass); }
.block h2 { font: 400 clamp(1.8rem, 4.2vw, 3.6rem)/1.08 var(--display); letter-spacing: -.03em; text-wrap: balance; }
.block-lead { color: var(--mut); max-width: 60ch; font-size: 1.04rem; }

/* ---------- Услуги ---------- */
.services { border-top: 1px solid var(--line); }
.service {
  display: grid; grid-template-columns: minmax(150px, .5fr) minmax(0, 1.5fr) minmax(0, 1.1fr) auto; gap: clamp(18px, 3vw, 48px);
  padding: clamp(28px, 3.4vw, 48px) 0; border-bottom: 1px solid var(--line); align-items: start;
  transition: background .3s, padding .3s;
}
.service:hover { background: linear-gradient(90deg, rgba(201, 169, 110, .06), transparent 70%); }
.service h3 { font: 400 clamp(1.25rem, 2.1vw, 1.9rem)/1.2 var(--display); letter-spacing: -.02em; margin-bottom: 14px; text-wrap: balance; }
.service-main h3 { font-size: clamp(1.5rem, 3vw, 2.7rem); }
.service-body p { color: var(--mut); max-width: 56ch; }
.service-list { display: grid; gap: 9px; font-size: .95rem; }
.service-list li { padding-left: 18px; position: relative; color: var(--fg); }
.service-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--brass); }
.service-link { font: 500 .85rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--brass); padding: 12px 0; white-space: nowrap; }
.service-link:hover { color: var(--brass-2); }
.tag { display: inline-block; font: 500 .72rem/1.35 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mut); border: 1px solid var(--line-2); padding: 7px 10px; }
.tag-brass { color: var(--ink); background: var(--brass); border-color: var(--brass); }

/* ---------- Работы ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: clamp(22px, 3vw, 36px); }
.chip { background: none; border: 1px solid var(--line-2); padding: 9px 16px; font-size: .9rem; cursor: pointer; color: var(--mut); transition: color .2s, border-color .2s, background .2s; }
.chip i { font: normal 500 .72rem/1 var(--mono); margin-left: 6px; opacity: .7; }
.chip:hover { color: var(--fg); border-color: var(--fg); }
.chip.is-on { background: var(--fg); color: var(--ink); border-color: var(--fg); }

.works { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 2.2vw, 32px); }
.work { --ac: var(--brass); display: flex; flex-direction: column; background: var(--ink-2); border: 1px solid var(--line); transition: transform .35s cubic-bezier(.2, .7, .2, 1), border-color .3s; min-width: 0; }
a.work:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--ac) 70%, #fff 0%); }
.work[hidden] { display: none; }
.shot { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--ink-3); border-bottom: 1px solid var(--line); }
.shot-bar { position: absolute; inset: 0 0 auto; z-index: 2; display: flex; align-items: center; gap: 6px; padding: 0 12px; height: 30px; background: rgba(11, 11, 13, .78); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.shot-bar i { width: 8px; height: 8px; border-radius: 50%; background: rgba(236, 233, 226, .25); }
.shot-bar span { margin-left: 10px; font: 400 .72rem/1 var(--mono); color: var(--mut); }
.shot img { width: 100%; height: 100%; object-fit: cover; object-position: top left; padding-top: 30px; background: var(--ink); transition: transform .8s cubic-bezier(.2, .7, .2, 1); }
a.work:hover .shot img, .work:hover .shot img { transform: scale(1.03); }
.shot-art {
  position: absolute; inset: 30px 0 0; padding: clamp(14px, 2.4vw, 28px); display: grid; align-content: end; gap: 8px;
  background: linear-gradient(135deg, #1b1b20, var(--ink) 75%);
  background: linear-gradient(135deg, color-mix(in srgb, var(--ac) 42%, #0b0b0d), #0b0b0d 78%);
}
.shot-art strong { font: 300 clamp(1.5rem, 4.4vw, 3.6rem)/.95 var(--display); letter-spacing: -.04em; color: var(--fg); margin-bottom: 8px; overflow-wrap: anywhere; }
.shot-art em { display: block; height: 6px; background: rgba(236, 233, 226, .14); }
.shot-art em:nth-of-type(1) { width: 62%; } .shot-art em:nth-of-type(2) { width: 44%; } .shot-art em:nth-of-type(3) { width: 28%; background: var(--ac); opacity: .9; }
.work-info { padding: clamp(20px, 2.4vw, 32px); display: flex; flex-direction: column; gap: 12px; flex: 1; min-width: 0; }
.work-top { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font: 500 .72rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.work-kind { color: var(--mut); }
.work-domain { color: var(--brass); }
.work h3 { font: 400 clamp(1.15rem, 1.8vw, 1.5rem)/1.2 var(--display); letter-spacing: -.02em; }
.work-info p { color: var(--mut); font-size: .96rem; }
.work-info .work-metric { color: var(--fg); font: 500 .85rem/1.4 var(--mono); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 8px; }
.tags li { font: 400 .72rem/1 var(--mono); color: var(--mut); border: 1px solid var(--line); padding: 6px 9px; }

/* ---------- Процесс ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.steps li { padding: clamp(22px, 2.6vw, 36px) clamp(14px, 2vw, 28px) 0 0; display: grid; gap: 12px; align-content: start; }
.steps li + li { padding-left: clamp(14px, 2vw, 28px); border-left: 1px solid var(--line); }
.step-n { font: 300 clamp(2.4rem, 4vw, 3.6rem)/1 var(--display); color: var(--brass); letter-spacing: -.04em; }
.steps h3 { font: 500 1.08rem/1.3 var(--display); letter-spacing: -.01em; }
.steps p { color: var(--mut); font-size: .96rem; }

/* ---------- Технологии ---------- */
.stack { display: grid; gap: 18px; }
.stack-list { display: flex; flex-wrap: wrap; gap: 8px; }
.stack-list li { border: 1px solid var(--line-2); padding: 10px 16px; font-size: .95rem; }

/* ---------- Контакты ---------- */
.contact { padding-bottom: clamp(64px, 9vw, 132px); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 110px); align-items: start; }
.contact-copy { display: grid; gap: 18px; }
.contact-copy > p:not(.eyebrow) { color: var(--mut); max-width: 46ch; }
.contact-list { display: grid; margin-top: 12px; border-top: 1px solid var(--line); }
.contact-list li { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.contact-list span { font: 500 .74rem/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mut); }
.contact-list a:hover { color: var(--brass-2); }
.form { display: grid; gap: 22px; padding: clamp(22px, 3vw, 40px); background: var(--ink-2); border: 1px solid var(--line); }
.field { display: grid; gap: 8px; }
.field span { font: 500 .74rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mut); }
.field input, .field select, .field textarea { width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--line-2); padding: 10px 0; border-radius: 0; outline: none; transition: border-color .2s; }
.field select { appearance: none; -webkit-appearance: none; background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23c9a96e' stroke-width='1.5'%3E%3Cpath d='m1 1 5 5 5-5'/%3E%3C/svg%3E") no-repeat right 4px center; padding-right: 26px; }
.field select option { background: var(--ink-2); color: var(--fg); }
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { border-bottom-color: var(--brass); }
.field input::placeholder, .field textarea::placeholder { color: rgba(155, 151, 142, .6); }
.field.is-bad input { border-bottom-color: #e0766b; }
.hp { position: absolute; left: -5000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { min-height: 1.5em; font-size: .95rem; color: var(--mut); }
.form-status.ok { color: #9bd3a8; }
.form-status.err { color: #e8998f; }

.foot { border-top: 1px solid var(--line); padding: 28px var(--gutter); display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; color: var(--mut); font-size: .9rem; max-width: var(--max); margin: 0 auto; }
.foot a:hover { color: var(--brass-2); }

/* ---------- Появление ---------- */
/* Контент виден сразу; при прокрутке блоки лишь слегка поднимаются */
.js .reveal { transform: translateY(26px); transition: transform .8s cubic-bezier(.2, .7, .2, 1), border-color .3s; }
.js .reveal.in { transform: none; }

/* ---------- Адаптив ---------- */
@media (max-width: 1080px) {
  .service { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .service-meta { grid-column: 1 / -1; }
  .service-link { grid-column: 1 / -1; padding-top: 0; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li:nth-child(3) { border-left: 0; padding-left: 0; }
  .steps li:nth-child(n+3) { border-top: 1px solid var(--line); margin-top: 28px; }
}
@media (max-width: 860px) {
  .burger { display: block; }
  .nav { position: fixed; inset: 0; background: rgba(11, 11, 13, .98); flex-direction: column; justify-content: center; gap: 28px; font-size: 1.4rem; opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; }
  .nav.open { opacity: 1; visibility: visible; }
  .nav a { color: var(--fg); }
  .burger { z-index: 60; }
  .hero-bottom, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .works { grid-template-columns: minmax(0, 1fr); }
  .scale-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scale-row > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .scale-row > div:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 620px) {
  .service { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .steps li + li { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); margin-top: 24px; }
  .hero-actions .btn { flex: 1 1 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .js .reveal { transform: none; }
}