/* ============================================
   URALTRANSNEFT — styles.css
   Theme: Industrial Editorial
   ============================================ */
:root {
  --white: #ffffff;
  --paper: #f4f1ea;
  --mist: #f8f6f1;
  --sand: #ebe5d9;
  --line: #d8d1c4;
  --line-strong: #b9b09f;
  --ink: #161616;
  --ink-soft: #4f4a42;
  --ink-muted: #7f786d;
  --charcoal: #101113;
  --charcoal-soft: #1b1d20;
  --rust: #c96b33;
  --rust-deep: #99481d;
  --success-bg: #eef4ea;
  --success-border: #afc8a1;
  --success-text: #3a5e33;
  --error-bg: #fff2ee;
  --error-border: #efb39b;
  --error-text: #9a3d18;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --font-label: 'Barlow Condensed', sans-serif;
  --radius: 2px;
  --radius-lg: 6px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 6px 18px rgba(16, 17, 19, 0.05);
  --shadow: 0 18px 45px rgba(16, 17, 19, 0.08);
  --shadow-lg: 0 28px 70px rgba(16, 17, 19, 0.14);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--white);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-transform: uppercase;
}
h1 { font-size: clamp(3.25rem, 7vw, 7rem); }
h2 { font-size: clamp(2.1rem, 4vw, 4.25rem); }
h3 { font-size: clamp(1.45rem, 2.6vw, 2.35rem); }
h4 { font-size: 1.2rem; }
h5 { font-size: 0.78rem; letter-spacing: 0.18em; color: var(--ink-muted); }
em { font-style: normal; color: var(--rust); }
p { color: var(--ink-soft); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
strong { color: var(--ink); font-weight: 600; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-label);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}
.section-label::before {
  content: '';
  display: block;
  width: 46px;
  height: 1px;
  background: currentColor;
}
.section-title { margin-bottom: 1.75rem; max-width: 14ch; }
.section-header { max-width: 820px; margin: 0 0 3.5rem; text-align: left; }
.subheading-accent { margin-top: 2rem; color: var(--rust-deep); }

.container { max-width: 1260px; margin: 0 auto; padding: 0 2.25rem; }
.section { padding: 7.5rem 0; position: relative; }
.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 2.25rem;
  right: 2.25rem;
  height: 1px;
  background: var(--line);
}
.section:first-of-type::before { display: none; }
.section-divider { height: 1px; background: var(--line); margin: 0 2.25rem; }

.animate-in { opacity: 0; transform: translateY(24px); animation: fadeUp 0.8s ease forwards; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.scroll-reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.65s ease, transform 0.65s ease; }
.scroll-reveal.revealed { opacity: 1; transform: translateY(0); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-label);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 1rem 2.1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 0;
}
.btn--primary { background: var(--rust); border-color: var(--rust); color: var(--white); }
.btn--primary:hover { background: var(--rust-deep); border-color: var(--rust-deep); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, 0.35); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.6); }
.btn--outline { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: var(--white); }
.btn--lg { padding: 1.15rem 2.65rem; font-size: 0.84rem; }
.btn--full { width: 100%; }

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 28px rgba(16, 17, 19, 0.06);
}
.nav--light {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
}
.nav--light .nav__links a { color: var(--ink-soft); }
.nav--light .nav__links a:hover,
.nav--light .nav__links a.active { color: var(--ink); }
.nav--light .nav__toggle span { background: var(--ink); }
.nav__inner {
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 2.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav__logo { display: flex; align-items: center; position: relative; flex-shrink: 0; }
.nav__logo-img { display: block; height: 50px; width: auto; max-width: 560px; }
.nav__logo-img--dark { display: none; }
.nav--light .nav__logo-img--light,
.nav.scrolled .nav__logo-img--light { display: none; }
.nav--light .nav__logo-img--dark,
.nav.scrolled .nav__logo-img--dark { display: block; }
.nav__links { display: flex; align-items: center; gap: 2.1rem; }
.nav__links a {
  font-family: var(--font-label);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 0.35rem;
}
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--rust);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav__links a:hover,
.nav__links a.active { color: var(--white); }
.nav__links a:hover::after,
.nav__links a.active::after { transform: scaleX(1); }
.nav.scrolled .nav__links a { color: var(--ink-soft); }
.nav.scrolled .nav__links a:hover,
.nav.scrolled .nav__links a.active { color: var(--ink); }
.nav__cta {
  border: 1px solid var(--rust) !important;
  background: var(--rust) !important;
  color: var(--white) !important;
  padding: 0.75rem 1.35rem;
  font-weight: 600;
}
.nav__cta::after { display: none !important; }
.nav__cta:hover { background: var(--rust-deep) !important; border-color: var(--rust-deep) !important; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--white); transition: var(--transition); }
.nav.scrolled .nav__toggle span { background: var(--ink); }

/* Dropdown Navigation */
.nav__item-dropdown { position: relative; }
.nav__item-dropdown:hover .nav__dropdown { display: flex; }
.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: none;
  flex-direction: column;
  gap: 0;
  display: none;
  min-width: 200px;
  box-shadow: 0 12px 32px rgba(16, 17, 19, 0.12);
  z-index: 101;
}
.nav__dropdown li { margin: 0; }
.nav__dropdown a {
  display: block;
  padding: 0.85rem 1.2rem;
  font-family: var(--font-label);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--transition), background var(--transition);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.nav__dropdown a:last-child { border-bottom: none; }
.nav__dropdown a::after { display: none !important; }
.nav__dropdown a:hover { background: var(--mist); color: var(--rust); }
.nav--light .nav__dropdown a { color: var(--ink-soft); }

@media (max-width: 768px) {
  .nav__dropdown {
    position: static;
    background: var(--paper);
    border: none;
    border-top: 1px solid var(--line);
    box-shadow: none;
    margin-top: 0.55rem;
    padding: 0.55rem 0;
  }
  .nav__dropdown a { padding: 0.65rem 1.4rem 0.65rem 2.8rem; }
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  padding: 0 2.25rem 4rem;
}
.hero__bg { position: absolute; inset: 0; background: var(--charcoal); }
.hero__bg-img {
  position: absolute;
  inset: 0;
  background: url('/img/hero_img.jpg') center center / cover no-repeat;
  opacity: 0.48;
  transform: scale(1.03);
  filter: saturate(0.75) contrast(1.02);
}
.hero__overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(16, 17, 19, 0.92) 0%, rgba(16, 17, 19, 0.72) 36%, rgba(16, 17, 19, 0.46) 70%, rgba(16, 17, 19, 0.72) 100%); }
.hero__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.35));
}
.hero__content { position: relative; z-index: 1; max-width: 700px; width: 100%; margin: 0 auto 0 0; padding-top: 9rem; }
.hero__eyebrow { font-family: var(--font-label); font-size: 0.82rem; letter-spacing: 0.28em; text-transform: uppercase; color: rgba(255, 255, 255, 0.68); margin-bottom: 1.25rem; }
.hero__title { color: var(--white); margin-bottom: 1.5rem; line-height: 0.92; max-width: 9ch; }
.hero__title em { color: var(--rust); }
.hero__desc { font-size: 1.06rem; color: rgba(255, 255, 255, 0.78); max-width: 610px; margin: 0 0 2.5rem; line-height: 1.8; }
.hero__actions { display: flex; gap: 1rem; justify-content: flex-start; flex-wrap: wrap; }
.hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(100%, 980px);
  margin: 5rem auto 0 0;
  background: rgba(255, 255, 255, 0.93);
  border: 1px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(10px);
}
.stat { padding: 1.85rem 1.25rem 1.7rem; text-align: left; border-right: 1px solid var(--line); border-top: 4px solid var(--rust); min-height: 140px; }
.stat:last-child { border-right: none; }
.stat__num { display: block; font-family: var(--font-display); font-size: 2.7rem; font-weight: 600; color: var(--ink); line-height: 0.92; margin-bottom: 0.65rem; }
.stat__label { display: block; font-family: var(--font-label); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-muted); max-width: 12ch; }
.hero__scroll { position: absolute; right: 2.4rem; bottom: 2.6rem; display: flex; flex-direction: column; align-items: center; gap: 0.65rem; z-index: 1; }
.hero__scroll span { font-family: var(--font-label); font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255, 255, 255, 0.45); writing-mode: vertical-rl; transform: rotate(180deg); }
.hero__scroll-line { width: 1px; height: 72px; background: linear-gradient(to bottom, rgba(255, 255, 255, 0.55), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }

.band { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 1rem 0; }
.band__inner { max-width: 100%; padding: 0 2.25rem; }
.band__text { font-family: var(--font-label); font-weight: 600; font-size: 0.77rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink); text-align: center; margin: 0; }

.about-preview__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 5.5rem; align-items: center; }
.about-preview__img-wrap { position: relative; }
.about-preview__img-wrap img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; box-shadow: var(--shadow-lg); filter: saturate(0.82); }
.about-preview__badge { position: absolute; right: -1px; bottom: -1px; background: var(--white); border-top: 4px solid var(--rust); border-left: 1px solid var(--line); padding: 1.35rem 1.5rem; text-align: left; min-width: 122px; }
.badge__year { display: block; font-family: var(--font-display); font-size: 2.25rem; font-weight: 600; color: var(--ink); line-height: 0.92; }
.badge__label { font-family: var(--font-label); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted); margin-top: 0.35rem; }
.about-preview__content p { margin-bottom: 1.15rem; max-width: 58ch; }
.about-preview__content .btn { margin-top: 1rem; }

.services-preview { background: var(--mist); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.35rem; margin-top: 1rem; }
.service-card { background: var(--white); border: 1px solid var(--line); padding: 2.2rem 1.75rem; display: flex; flex-direction: column; gap: 1rem; transition: var(--transition); position: relative; }
.service-card::before { content: ''; position: absolute; left: -1px; top: -1px; width: 44px; height: 4px; background: var(--rust); transition: width var(--transition); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.service-card:hover::before { width: calc(100% + 2px); }
.service-card__icon { color: var(--rust); }
.service-card h3 { font-size: 1.55rem; color: var(--ink); }
.service-card p { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.7; margin: 0; }
.card-link { margin-top: auto; font-family: var(--font-label); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink); transition: color var(--transition); }
.service-card:hover .card-link { color: var(--rust); }

.products-band { background: var(--paper); padding: 4.5rem 2.25rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.products-band__inner { max-width: 1260px; margin: 0 auto; text-align: left; }
.products-list { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1rem; }
.products-list span { font-family: var(--font-label); font-size: 0.84rem; letter-spacing: 0.1em; color: var(--ink-soft); text-transform: uppercase; }
.products-list .sep { color: var(--rust); }

.pipeline-section { background: var(--paper); }
.pipeline-box { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); gap: 5rem; align-items: center; }
.pipeline-box__content p { margin-bottom: 1.15rem; max-width: 64ch; }
.pipeline-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2.25rem; }
.pipeline-fact { background: var(--white); border: 1px solid var(--line); padding: 1.3rem 1.4rem; position: relative; }
.pipeline-fact::before { content: ''; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 4px; background: var(--rust); }
.pipeline-fact span { display: block; font-family: var(--font-display); font-size: 2rem; color: var(--ink); font-weight: 600; line-height: 0.92; margin-bottom: 0.45rem; }
.pipeline-fact p { font-size: 0.86rem; color: var(--ink-soft); margin: 0; }
.pipeline-box__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; box-shadow: var(--shadow-lg); filter: saturate(0.84); }

.regions-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.35rem; }
.region-item { background: var(--white); border: 1px solid var(--line); padding: 2rem 1.6rem 1.75rem; transition: var(--transition); position: relative; }
.region-item::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 48px; background: var(--rust); }
.region-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.region-item__num { font-family: var(--font-display); font-size: 2.8rem; color: var(--sand); line-height: 1; margin-bottom: 0.85rem; font-weight: 700; }
.region-item h4 { color: var(--ink); margin-bottom: 0.7rem; font-size: 1.15rem; }
.region-item p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

.cta-banner { background: linear-gradient(90deg, var(--charcoal) 0%, var(--charcoal-soft) 100%); padding: 6rem 2.25rem; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; left: 2.25rem; right: 2.25rem; top: 0; height: 1px; background: rgba(255, 255, 255, 0.12); }
.cta-banner__inner { max-width: 760px; margin: 0 auto; text-align: left; position: relative; z-index: 1; }
.cta-banner__inner h2 { color: var(--white); margin-bottom: 1rem; max-width: 12ch; }
.cta-banner__inner h2 em { color: var(--rust); }
.cta-banner__inner p { color: rgba(255, 255, 255, 0.68); margin-bottom: 2.2rem; max-width: 55ch; }
.cta-banner .btn--primary { background: var(--rust); border-color: var(--rust); color: var(--white); }
.cta-banner .btn--primary:hover { background: var(--rust-deep); border-color: var(--rust-deep); }

.footer { background: var(--charcoal); border-top: 1px solid rgba(255, 255, 255, 0.08); padding-top: 4.5rem; }
.footer__inner { max-width: 1260px; margin: 0 auto; padding: 0 2.25rem 3.5rem; display: grid; grid-template-columns: 2fr 1fr 1fr 1.25fr; gap: 2.5rem; }
.footer__logo-img { display: block; height: 64px; width: auto; max-width: 620px; margin-bottom: 1.4rem; }
.footer__brand p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.5); margin: 0; max-width: 38ch; }
.footer__nav h5, .footer__services h5, .footer__contact h5 { color: rgba(255, 255, 255, 0.5); margin-bottom: 1.2rem; }
.footer__nav ul li, .footer__services ul li { margin-bottom: 0.6rem; }
.footer__nav a, .footer__services a { font-size: 0.9rem; color: rgba(255, 255, 255, 0.56); transition: color var(--transition); }
.footer__nav a:hover, .footer__services a:hover { color: var(--white); }
.footer__contact p { font-size: 0.88rem; color: rgba(255, 255, 255, 0.56); margin-bottom: 0.8rem; }
.footer__bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 1.35rem 2.25rem; max-width: 1260px; margin: 0 auto; }
.footer__bottom p { font-size: 0.76rem; color: rgba(255, 255, 255, 0.32); margin: 0; letter-spacing: 0.08em; text-transform: uppercase; }

.page-hero { position: relative; padding: 11rem 0 5.5rem; background: linear-gradient(180deg, var(--mist) 0%, var(--white) 100%); overflow: hidden; border-bottom: 1px solid var(--line); }
.page-hero__bg { position: absolute; inset: 0; }
.page-hero__bg::before { content: ''; position: absolute; left: 2.25rem; right: 2.25rem; top: 0; height: 1px; background: var(--line); }
.page-hero__bg::after { content: ''; position: absolute; left: 2.25rem; top: 0; bottom: 0; width: 1px; background: linear-gradient(var(--line), transparent 70%); }
.page-hero--locations .page-hero__bg {
  background:
    linear-gradient(180deg, rgba(248, 246, 241, 0.92) 0%, rgba(255, 255, 255, 0.95) 100%),
    url('/img/dotted_worldmap_locations.png') center center / cover no-repeat;
  opacity: 1;
}
.page-hero--locations .page-hero__bg::before { background: rgba(216, 209, 196, 0.7); }
.page-hero__content { position: relative; z-index: 1; max-width: 1260px; margin: 0 auto; padding: 0 2.25rem; text-align: left; }
.page-hero__content .section-label { color: var(--rust); }
.page-hero__content h1 { color: var(--ink); margin-bottom: 1rem; max-width: 10ch; }
.page-hero__content h1 em { color: var(--rust); }
.page-hero__content p { color: var(--ink-soft); font-size: 1.02rem; max-width: 52ch; margin: 0; }

.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 5rem; align-items: center; }
.two-col__text p { margin-bottom: 1.15rem; max-width: 62ch; }
.two-col__text .btn { margin-top: 0.85rem; }
.two-col__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; box-shadow: var(--shadow-lg); filter: saturate(0.84); }

.timeline-section { background: var(--mist); }
.timeline { position: relative; max-width: 920px; margin: 0 auto 0 0; padding-left: 0; }
.timeline::before { content: ''; position: absolute; left: 122px; top: 0; bottom: 0; width: 1px; background: var(--line-strong); }
.timeline-item { display: grid; grid-template-columns: 122px 1fr; gap: 3rem; padding-bottom: 3rem; position: relative; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::after { content: ''; position: absolute; left: 116px; top: 8px; width: 13px; height: 13px; background: var(--rust); border: 3px solid var(--white); }
.timeline-item__year { font-family: var(--font-label); font-size: 0.9rem; color: var(--rust); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; text-align: left; padding-top: 0.1rem; }
.timeline-item__content { border-top: 1px solid var(--line); padding-top: 0.25rem; }
.timeline-item__content h4 { color: var(--ink); margin-bottom: 0.55rem; font-size: 1.15rem; }
.timeline-item__content p { font-size: 0.94rem; color: var(--ink-soft); margin: 0; max-width: 60ch; }

.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.35rem; }
.value-card { background: var(--white); border: 1px solid var(--line); padding: 1.9rem 1.6rem; transition: var(--transition); position: relative; }
.value-card::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 54px; background: var(--rust); }
.value-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.value-card__num { font-family: var(--font-display); font-size: 2.65rem; color: var(--sand); font-weight: 700; line-height: 1; margin-bottom: 0.8rem; }
.value-card h4 { color: var(--ink); margin-bottom: 0.75rem; }
.value-card p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

.alliance-section { background: var(--paper); }
.alliance-section--about {
  background:
    linear-gradient(180deg, rgba(16, 17, 19, 0.93) 0%, rgba(16, 17, 19, 0.88) 100%),
    url('/img/pipeline.jpg') center center / cover no-repeat;
}
.alliance-section--about::before { background: rgba(255, 255, 255, 0.12); }
.alliance-section--about .alliance-box {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.18);
}
.alliance-box { display: grid; grid-template-columns: 2fr 1fr; gap: 4rem; align-items: start; border: 1px solid var(--line); padding: 3rem; background: var(--white); position: relative; }
.alliance-box::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 72px; background: var(--rust); }
.alliance-box__content p { margin-bottom: 1.1rem; max-width: 62ch; }
.alliance-box__stats { display: flex; flex-direction: column; gap: 1.6rem; padding-left: 1rem; border-left: 1px solid var(--line); }
.mini-stat span { display: block; font-family: var(--font-display); font-size: 3rem; color: var(--ink); font-weight: 600; line-height: 0.92; margin-bottom: 0.2rem; }
.mini-stat p { font-size: 0.84rem; color: var(--ink-muted); margin: 0; text-transform: uppercase; letter-spacing: 0.12em; font-family: var(--font-label); }

.service-detail__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 5rem; align-items: center; }
.service-detail__grid--reverse { direction: rtl; }
.service-detail__grid--reverse > * { direction: ltr; }
.service-detail__content p { margin-bottom: 1.1rem; max-width: 62ch; }
.service-detail__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; box-shadow: var(--shadow-lg); filter: saturate(0.84); }

.product-tags { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1rem; }
.product-tags span { background: var(--mist); border: 1px solid var(--line); color: var(--ink); font-family: var(--font-label); font-size: 0.7rem; letter-spacing: 0.08em; padding: 0.45rem 0.9rem; font-weight: 600; text-transform: uppercase; }

.check-list li { position: relative; padding-left: 1.65rem; margin-bottom: 0.75rem; font-size: 0.95rem; color: var(--ink-soft); }
.check-list li::before { content: ''; position: absolute; left: 0; top: 0.78rem; width: 10px; height: 1px; background: var(--rust); }

.pipeline-access-box { background: var(--mist); border: 1px solid var(--line); padding: 2rem 2.2rem; margin-top: 2rem; position: relative; }
.pipeline-access-box::before { content: ''; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 4px; background: var(--rust); }
.pipeline-access-box h5 { color: var(--ink); margin-bottom: 0.75rem; }
.pipeline-access-box p { font-size: 0.92rem; margin-bottom: 0.75rem; }

.storage-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.storage-highlight { background: var(--white); border: 1px solid var(--line); padding: 1.25rem; position: relative; }
.storage-highlight::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 44px; background: var(--rust); }
.storage-highlight h5 { color: var(--ink); margin-bottom: 0.5rem; }
.storage-highlight p { font-size: 0.88rem; color: var(--ink-soft); margin: 0; }

.risk-tools { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 1.5rem; }
.risk-tool { border-left: 1px solid var(--line-strong); padding-left: 1.25rem; transition: border-color var(--transition); }
.risk-tool:hover { border-left-color: var(--rust); }
.risk-tool h5 { color: var(--ink); margin-bottom: 0.35rem; }
.risk-tool p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

.offices-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.35rem; }
.locations-offices-section {
  background: linear-gradient(180deg, var(--mist) 0%, var(--white) 100%);
  overflow: hidden;
}
.locations-offices-section::after {
  content: '';
  position: absolute;
  top: 1.5rem;
  right: 0;
  width: min(42vw, 620px);
  height: 240px;
  background: url('/img/dotted_worldmap_locations.jpg') right top / contain no-repeat;
  opacity: 0.16;
  pointer-events: none;
}
.office-card { background: var(--white); border: 1px solid var(--line); padding: 2.2rem; transition: var(--transition); position: relative; }
.office-card::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 58px; background: var(--line-strong); }
.office-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.office-card--featured::before, .office-card:hover::before { background: var(--rust); }
.office-card__tag { font-family: var(--font-label); font-size: 0.66rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--rust); margin-bottom: 1.4rem; display: inline-block; }
.office-card__icon { color: var(--rust); margin-bottom: 1rem; }
.office-card h3 { font-size: 1.55rem; color: var(--ink); margin-bottom: 0.3rem; }
.office-card__role { font-size: 0.84rem; color: var(--ink-muted); margin-bottom: 1.3rem; text-transform: uppercase; letter-spacing: 0.1em; font-family: var(--font-label); }
.office-card__address { margin-bottom: 1.15rem; }
.office-card__address p { font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 0.22rem; }
.office-card__phone { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-label); font-size: 0.86rem; color: var(--ink); transition: color var(--transition); letter-spacing: 0.08em; text-transform: uppercase; }
.office-card__phone:hover { color: var(--rust); }

.kirishi-section { background: var(--mist); }
.locations-terminals-section {
  background:
    linear-gradient(180deg, rgba(16, 17, 19, 0.9) 0%, rgba(27, 29, 32, 0.92) 100%),
    url('/img/transneft.jpg') center center / cover no-repeat;
}
.locations-terminals-section::before { background: rgba(255, 255, 255, 0.14); }
.locations-terminals-section .section-header { position: relative; z-index: 1; }
.locations-terminals-section .section-label { color: var(--rust); }
.locations-terminals-section .section-header h2 { color: var(--white); }
.locations-terminals-section .port-card {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(5px);
}
.ports-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.35rem; }
.port-card { background: var(--white); border: 1px solid var(--line); padding: 2rem; transition: var(--transition); position: relative; }
.port-card::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 52px; background: var(--rust); }
.port-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.port-card h4 { color: var(--ink); margin-bottom: 0.75rem; font-size: 1.15rem; }
.port-card p { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 0.8rem; }
.port-region { font-family: var(--font-label); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--rust); display: inline-block; }

.contact-section { background: var(--mist); }
.contact-layout { display: grid; grid-template-columns: 1.4fr 0.95fr; gap: 4rem; align-items: start; }
.contact-form-wrap { background: var(--white); border: 1px solid var(--line); padding: 2.5rem; position: relative; }
.contact-form-wrap::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 70px; background: var(--rust); }
.contact-form-wrap h3 { font-size: 2.05rem; margin-bottom: 0.75rem; }
.contact-form-wrap p { color: var(--ink-soft); margin-bottom: 2rem; max-width: 60ch; }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-group { display: flex; flex-direction: column; gap: 0.55rem; }
.form-group label { font-family: var(--font-label); font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-muted); font-weight: 600; }
.required { color: var(--rust); }
.form-group input, .form-group select, .form-group textarea {
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 0.95rem 1rem;
  font-family: var(--font-body);
  font-size: 0.96rem;
  font-weight: 400;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  border-radius: 0;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--rust); box-shadow: 0 0 0 3px rgba(201, 107, 51, 0.08); }
.form-group select { appearance: none; cursor: pointer; }
.form-group input::placeholder, .form-group textarea::placeholder { color: #aaa393; }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-notice { font-size: 0.92rem; padding: 0.9rem 1rem; border-radius: 0; display: none; }
.form-notice.success { display: block; background: var(--success-bg); border: 1px solid var(--success-border); color: var(--success-text); }
.form-notice.error { display: block; background: var(--error-bg); border: 1px solid var(--error-border); color: var(--error-text); }
.contact-info { display: flex; flex-direction: column; gap: 1.4rem; }
.contact-info__group { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.contact-info__group h4 { color: var(--ink); margin-bottom: 0.35rem; font-size: 1.12rem; }
.contact-info__label { font-family: var(--font-label); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--rust); margin-bottom: 0.8rem !important; }
.contact-info__group address { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.8; margin-bottom: 0.8rem; }
.contact-info__phone { font-family: var(--font-label); font-size: 0.86rem; color: var(--ink); transition: color var(--transition); letter-spacing: 0.1em; text-transform: uppercase; }
.contact-info__phone:hover { color: var(--rust); }
.contact-info__note { display: flex; gap: 0.9rem; align-items: flex-start; background: var(--white); border: 1px solid var(--line); padding: 1.25rem; position: relative; }
.contact-info__note::before { content: ''; position: absolute; left: -1px; top: -1px; width: 4px; height: 48px; background: var(--line-strong); }
.contact-info__note svg { color: var(--rust); flex-shrink: 0; margin-top: 2px; }
.contact-info__note p { font-size: 0.88rem; color: var(--ink-soft); margin: 0; }
.contact-info__note--warning { background: #fff7f2; border-color: #efc4ae; }
.contact-info__note--warning::before { background: var(--rust); }
.contact-info__note--warning svg { color: var(--rust-deep); }
.contact-info__note--warning p { margin-bottom: 0.8rem; }
.contact-info__note--warning p:last-child { margin-bottom: 0; }
.contact-info__note--warning strong { color: var(--rust-deep); }
.contact-info__note--warning a { color: var(--rust-deep); text-decoration: underline; word-break: break-word; }
.contact-info__note--warning a:hover { color: var(--ink); }

@media (max-width: 1100px) {
  .services-grid,
  .values-grid,
  .regions-grid { grid-template-columns: repeat(2, 1fr); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .offices-grid,
  .ports-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .section { padding: 5.75rem 0; }
  .about-preview__grid,
  .two-col,
  .service-detail__grid,
  .alliance-box,
  .contact-layout,
  .pipeline-box { grid-template-columns: 1fr; gap: 3rem; }
  .service-detail__grid--reverse { direction: ltr; }
  .alliance-box__stats { padding-left: 0; border-left: none; border-top: 1px solid var(--line); padding-top: 1.5rem; }
  .timeline::before { display: none; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.75rem; padding-bottom: 2rem; }
  .timeline-item::after { display: none; }
  .timeline-item__content { padding-top: 1rem; }
  .about-preview__badge { right: 0; bottom: 0; }
  .locations-offices-section::after { width: 70vw; height: 180px; opacity: 0.12; }
}

@media (max-width: 768px) {
  h1 { font-size: clamp(2.6rem, 13vw, 4.3rem); }
  h2 { font-size: clamp(1.8rem, 8vw, 3rem); }
  .nav__logo-img { height: 38px; max-width: 360px; }
  .footer__logo-img { height: 48px; max-width: 420px; }
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.4rem;
    gap: 1.1rem;
    border-top: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav__links a { color: var(--ink) !important; }
  .nav__links.open { display: flex; }
  .nav__toggle { display: flex; }
  .hero { padding: 0 1.4rem 2.5rem; }
  .hero__content { padding-top: 7.5rem; }
  .hero__desc { font-size: 1rem; }
  .hero__stats { margin-top: 3rem; }
  .stat { min-height: auto; }
  .hero__scroll { display: none; }
  .band__inner,
  .products-band,
  .cta-banner,
  .container,
  .nav__inner,
  .footer__inner,
  .footer__bottom,
  .page-hero__content { padding-left: 1.4rem; padding-right: 1.4rem; }
  .values-grid,
  .form-row,
  .storage-highlights,
  .pipeline-facts,
  .services-grid,
  .regions-grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .page-hero { padding: 8.5rem 0 4.25rem; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .hero__stats { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: none; }
}