:root {
  --ink: #0b0d10;
  --ink-2: #14181f;
  --ink-3: #1c222c;
  --panel: #171c24;
  --line: rgba(232, 197, 71, 0.18);
  --line-soft: rgba(255, 255, 255, 0.08);
  --gold: #d4af37;
  --gold-2: #f0d78c;
  --gold-deep: #9a7b1a;
  --paper: #f6f1e8;
  --muted: #9aa3b2;
  --steel: #c9d0da;
  --white: #fbf8f2;
  --danger: #c45c2a;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --max: 1180px;
  --header-h: 84px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Arial", "Segoe UI", sans-serif;
  color: var(--steel);
  background: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gold);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--gold);
}
h1, h2, h3, .display {
  font-family: "Arial", Georgia, serif;
  color: var(--white);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
}
h1 { font-size: clamp(2.6rem, 6vw, 5.2rem); }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { font-size: 1.55rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 58ch; }

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  display: flex; align-items: center;
  background: linear-gradient(180deg, rgba(11,13,16,.92), rgba(11,13,16,.55) 70%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.site-header.scrolled {
  background: rgba(11,13,16,.94);
  border-bottom-color: var(--line-soft);
}
.header-inner {
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  color: var(--white);
}
.brand img { width: 52px; height: 52px; object-fit: contain; filter: drop-shadow(0 4px 10px rgba(0,0,0,.45)); }
.brand-name { font-family: "Cormorant Garamond", serif; font-size: 1.35rem; letter-spacing: .04em; }
.brand-name span { display: block; font-family: "Arial", sans-serif; font-size: .62rem; letter-spacing: .28em; color: var(--gold); text-transform: uppercase; margin-top: -2px; }

nav { display: flex; align-items: center; gap: 28px; }
nav a { font-size: .86rem; letter-spacing: .12em; text-transform: uppercase; color: var(--steel); position: relative; }
nav a:hover, nav a.active { color: var(--gold-2); }
nav a.active::after, nav a:hover::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 1px; background: var(--gold);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid var(--gold);
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  color: #1a1404;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .75rem;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(212,175,55,.22);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(212,175,55,.32); }
.btn.ghost {
  background: transparent; color: var(--gold-2);
  box-shadow: none;
}
.btn.ghost:hover { background: rgba(212,175,55,.08); }
.menu-toggle { display: none; background: none; border: 0; color: var(--white); font-size: 1.4rem; cursor: pointer; }

/* Hero */
.hero {
  min-height: 100vh;
  display: grid;
  place-items: end stretch;
  position: relative;
  background:
    linear-gradient(180deg, rgba(11,13,16,.25) 0%, rgba(11,13,16,.55) 45%, rgba(11,13,16,.96) 100%),
    url("../assets/openpit.jpg") center/cover no-repeat;
}
.hero-content { padding: 0 0 92px; }
.hero .kicker { margin-bottom: 18px; }
.hero p { margin: 22px 0 34px; max-width: 52ch; font-size: 1.18rem; color: #d7dbe3; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-meta {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}
.hero-meta b {
  display: block;
  font-family: "Arial", serif;
  font-size: 2.2rem;
  color: var(--gold-2);
  line-height: 1;
}
.hero-meta span { font-size: .82rem; color: var(--muted); letter-spacing: .04em; }

/* Sections */
section { padding: 96px 0; }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head h2 { margin: 10px 0 16px; }

.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.split img {
  width: 100%; height: 520px; object-fit: cover;
  border-radius: 8px 80px 8px 8px;
  box-shadow: var(--shadow);
}
.split.reverse { grid-template-columns: .95fr 1.05fr; }
.split.reverse img { border-radius: 80px 8px 8px 8px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.card {
  background: linear-gradient(180deg, #1a2029, #12161d);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 28px 26px 32px;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 auto auto 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}
.card .num {
  font-family: "Arial", serif;
  color: var(--gold);
  font-size: 2rem;
  margin-bottom: 8px;
}
.card p { color: var(--muted); margin-top: 10px; }

.resources { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.resource {
  position: relative; min-height: 280px; border-radius: var(--radius); overflow: hidden;
  display: flex; align-items: flex-end; padding: 22px;
  isolation: isolate;
}
.resource img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.resource::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, transparent 20%, rgba(8,9,12,.92));
}
.resource h3 { font-size: 1.6rem; }
.resource span { color: var(--gold); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; }

.band {
  background:
    linear-gradient(90deg, rgba(11,13,16,.82), rgba(11,13,16,.55)),
    url("../assets/hero.jpg") center/cover no-repeat;
  border-block: 1px solid var(--line);
}
.band .wrap { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; align-items: center; }
.price-chip {
  background: rgba(20,24,31,.78);
  border: 1px solid var(--gold);
  border-radius: 24px;
  padding: 28px;
  text-align: center;
}
.price-chip strong {
  display: block;
  font-family: "Arial", serif;
  font-size: 4.4rem;
  color: var(--gold-2);
  line-height: .9;
}
.price-chip em { font-style: normal; color: var(--muted); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step {
  padding: 26px 22px;
  border-left: 1px solid var(--line);
}
.step h3 { margin: 10px 0; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  color: var(--gold);
  font-family: "Arial", serif;
  font-size: 1.4rem;
}

.cta {
  background: radial-gradient(circle at 20% 20%, rgba(212,175,55,.14), transparent 40%), var(--ink-2);
  text-align: center;
}
.cta h2 { margin: 12px auto 16px; }
.cta p { margin: 0 auto 28px; }

footer {
  background: #08090c;
  border-top: 1px solid var(--line-soft);
  padding: 56px 0 28px;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
footer h4 { color: var(--white); font-family: "Arial", serif; font-size: 1.25rem; margin-bottom: 14px; }
footer a:hover { color: var(--gold-2); }
.legal { border-top: 1px solid var(--line-soft); padding-top: 18px; display: flex; justify-content: space-between; font-size: .85rem; gap: 16px; flex-wrap: wrap; }

/* Inner pages */
.page-hero {
  min-height: 52vh;
  display: grid; align-items: end;
  padding: 140px 0 64px;
  background:
    linear-gradient(180deg, rgba(11,13,16,.35), rgba(11,13,16,.92)),
    var(--hero-img, url("../assets/limestone.jpg")) center/cover no-repeat;
}
.page-hero.about { --hero-img: url("../assets/openpit.jpg"); }
.page-hero.partner { --hero-img: url("../assets/hero.jpg"); }
.page-hero.solutions { --hero-img: url("../assets/excavator.jpg"); }
.page-hero.contact { --hero-img: url("../assets/ore.jpg"); }

.table-wrap { overflow-x: auto; border: 1px solid var(--line-soft); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line-soft); }
th { color: var(--gold-2); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; font-size: .78rem; background: #12161d; }
td { color: var(--steel); }

.form {
  display: grid; gap: 14px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  padding: 28px;
}
.form label { font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.form input, .form select, .form textarea {
  width: 100%;
  background: #0f1319;
  border: 1px solid var(--line-soft);
  color: var(--white);
  padding: 13px 14px;
  border-radius: 10px;
}
.form textarea { min-height: 140px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; }
.contact-card { padding: 8px 0 22px; border-bottom: 1px solid var(--line-soft); }
.contact-card b { color: var(--white); display: block; margin-bottom: 4px; }
.note { font-size: .9rem; color: var(--muted); }

.toast {
  display: none;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(212,175,55,.12);
  border: 1px solid var(--gold);
  color: var(--gold-2);
}

@media (max-width: 980px) {
  .menu-toggle { display: block; }
  nav {
    position: absolute; top: var(--header-h); right: 16px; left: 16px;
    background: #12161d;
    border: 1px solid var(--line-soft);
    border-radius: 14px;
    flex-direction: column; align-items: flex-start;
    padding: 18px;
    display: none;
  }
  nav.open { display: flex; }
  .split, .split.reverse, .cards, .resources, .hero-meta, .steps, .band .wrap, .footer-grid, .contact-grid, .form-row {
    grid-template-columns: 1fr;
  }
  .split img, .split.reverse img { height: 320px; border-radius: 12px; }
  .hero { min-height: 92vh; }
}

@media (max-width: 640px) {
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  .hero-actions .btn { width: 100%; }
}