/* =========================================================
   VANGUARD — Gold Ore Processing Plant for Africa
   Design System: Deep Navy (--blue) + Bright Orange (--orange)
   深蓝为主 · 橙色点睛 · 浅灰背景 · 白卡片化 · 柔和蓝调投影
   ========================================================= */

:root {
  /* Primary — deep navy */
  --blue: #0e3a5f;
  --blue-2: #0a2b46;
  --blue-3: #08233a;

  /* Accent — bright orange (点睛) */
  --orange: #ff6b1a;
  --orange-hover: #e85d10;   /* hover / pressed */

  /* Neutrals */
  --ink: #263238;            /* body text */
  --muted: #607079;          /* secondary text */
  --line: #e3e8ee;           /* hairline borders */
  --bg: #f5f7fa;             /* light gray page bg */
  --white: #fff;             /* cards / page base */

  --radius: 14px;
  --radius-card: 12px;
  --radius-pill: 30px;
  --shadow: 0 8px 30px rgba(14,58,95,.10);
  --shadow-hover: 0 14px 34px rgba(14,58,95,.14);

  --wrap: 1400px;
  --font: "Segoe UI", system-ui, -apple-system, "Microsoft YaHei", Arial, sans-serif;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
/* keep anchor targets clear of the sticky header (68px) when jumping */
section[id]:not(#top) { scroll-margin-top: 84px; }
body{
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.lp img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
h1,
h2,
.lp h3,
h4{ margin: 0 0 .5em; line-height: 1.2; }
h1{ font-weight: 800; letter-spacing: -.01em; }
h2{ font-weight: 800; font-size: clamp(22px,3vw,32px); color: var(--blue); }
.lp h3{ font-weight: 800; font-size: 18px; color: var(--blue); }
h4{ font-weight: 700; color: var(--blue); }
.lp p{ margin: 0 0 1em; }

.container{ max-width: var(--wrap); margin: 0 auto; padding: 0 22px; }
.section{ padding: 90px 0; background: var(--white); }
.section--gray{ background: var(--bg); }

/* ---------- Blue section block (流程 / 案例 / How We Work) ---------- */
.section--blue {
  background: linear-gradient(160deg, #0e3a5f, #0a2b46);
  color: #fff;
}
.section--blue .eyebrow{ color: var(--orange); }
.section--blue .section-title{ color: #fff; }
.section--blue .section-sub{ color: rgba(255,255,255,.82); }

/* inner light cards keep their light fill for contrast; only fix elements sitting directly on navy */
.section--blue .proc-step .n {
  background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.22);
}
.section--blue .proc-step h4{ color: #fff; }
.section--blue .proc-step p{ color: rgba(255,255,255,.78); }

.section--blue .equip-chain .node{
  background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.22);
}
.section--blue .equip-chain .arr{ color: rgba(255,255,255,.6); }

/* buttons inside blue blocks flip to the orange accent so they stay visible on navy */
.section--blue .btn-primary { background: var(--orange); color: #fff; }
.section--blue .btn-primary:hover{ background: var(--orange-hover); }

/* ---------- Eyebrow / titles ---------- */
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--orange); margin-bottom: 14px;
}
.eyebrow--blue{ color: var(--orange); }
.section-title{ font-size: clamp(22px,3vw,32px); color: var(--blue); font-weight: 800; max-width: 840px; }
.section-sub{ font-size: 17px; color: var(--muted); max-width: 720px; margin-top: 14px; }
.title-center{ text-align: center; margin-left: auto; margin-right: auto; }
.sub-center{ margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 28px; border-radius: var(--radius-pill);
  font-weight: 800; font-size: 15px; cursor: pointer;
  border: 2px solid transparent; transition: .2s ease; white-space: nowrap;
}
.btn-primary{ background: var(--blue); color: #fff; }
.btn-primary:hover{ background: var(--blue-2); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-cta{ background: var(--orange); color: #fff; }
.btn-cta:hover{ background: var(--orange-hover); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost{ background: transparent; color: var(--blue); border-color: var(--line); }
.btn-ghost:hover{ border-color: var(--orange); color: var(--orange); }
.btn-lg{ padding: 16px 34px; font-size: 16px; }

/* ---------- Header (white, sticky) ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.lp .nav{ display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand{ display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; }
.brand .logo-mark{
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  display: grid; place-items: center; color: #fff; font-weight: 800;
}
.brand b{ font-size: 19px; letter-spacing: .04em; }
.brand span{ font-size: 11px; color: var(--muted); letter-spacing: .22em; display: block; font-weight: 600; }
.nav-links{ display: flex; align-items: center; gap: 26px; }
.nav-links a{ color: var(--ink); font-size: 14.5px; font-weight: 600; }
.nav-links a:hover{ color: var(--orange); }
.nav-cta{ background: var(--orange); color: #fff !important; padding: 9px 18px; border-radius: var(--radius-pill); font-weight: 800; }
.nav-cta:hover{ background: var(--orange-hover); }
.nav-toggle{ display: none; background: none; border: 0; color: var(--ink); font-size: 26px; cursor: pointer; }

/* ---------- Language switcher (multilingual) ---------- */
.lang-switch { position: relative; margin-left: 18px; }
.lang-toggle{
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  font-size: 13.5px; font-weight: 700; padding: 8px 14px; border-radius: var(--radius-pill); cursor: pointer; font-family: inherit;
}
.lang-toggle .caret{ font-size: 10px; color: var(--muted); }
.lang-menu{
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 180px;
  list-style: none; margin: 0; padding: 8px; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: all .18s ease; z-index: 60;
}
.lang-switch:hover .lang-menu,
.lang-menu.open{ opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu li a{ display: block; padding: 9px 12px; border-radius: 8px; color: var(--ink); font-size: 14px; font-weight: 600; }
.lang-menu li a:hover{ background: var(--bg); color: var(--orange); }
.lang-menu li a.is-current{ color: var(--orange); font-weight: 800; }
.lang-menu li a.is-current::after{ content: " ✓"; }
@media (max-width: 620px) { .lang-toggle{ font-size: 12.5px; padding: 7px 11px; } .lang-switch{ margin-left: 10px; } }

/* ---------- HERO (blue gradient + orange glow) ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(115deg, rgba(14,58,95,.96), rgba(10,43,70,.90));
}
.hero::before{
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 80% 20%, rgba(255,107,26,.30), transparent 45%);
}
.hero-inner{ position: relative; z-index: 2; padding: 72px 0 64px; }
.hero-grid{ display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-text{ max-width: none; }
.hero h1{
  font-size: clamp(28px,4vw,46px); color: #fff; margin: 6px 0 18px; letter-spacing: -.01em; font-weight: 800;
}
.hero .eyebrow{ color: var(--orange); }
.hero-sub{ font-size: 18px; color: rgba(255,255,255,.85); max-width: 600px; margin-bottom: 28px; }
.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; }
.hero .btn-ghost{ color: #fff; border-color: rgba(255,255,255,.55); }
.hero .btn-ghost:hover{ background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }
.hero-stats{
  display: flex; flex-wrap: wrap; margin-top: 44px; padding-top: 26px;
  border-top: 1px solid rgba(255,255,255,.2);
}
.stat{ padding: 0 30px; }
.stat:first-child{ padding-left: 0; }
.stat + .stat{ border-left: 1px solid rgba(255,255,255,.2); }
.stat .num{ font-size: 30px; font-weight: 800; color: #fff; }
.stat .num .unit{ color: var(--orange); font-size: 18px; }
.stat .lbl{ font-size: 13px; color: rgba(255,255,255,.75); }

/* hero photo (real site photo) */
.hero-photo {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(255,255,255,.18); box-shadow: var(--shadow);
  aspect-ratio: 4/5; background: var(--bg);
}
.hero-photo img{ width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.hero-photo .photo-tag{
  position: absolute; left: 14px; bottom: 14px; z-index: 5;
  background: rgba(255,255,255,.92); color: var(--ink); font-size: 12.5px; font-weight: 600;
  padding: 7px 12px; border-radius: 8px; box-shadow: var(--shadow);
}

/* ---------- Carousel (hero + case) ---------- */
.carousel { position: relative; }
.carousel-slides{ position: relative; width: 100%; height: 100%; }
.carousel-slide{
  position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease;
  pointer-events: none;
}
.carousel-slide.is-active{ opacity: 1; pointer-events: auto; }
.carousel-slide img{ width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }

.carousel-arrow{
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 42px; height: 42px; border-radius: 50%; border: 0; cursor: pointer;
  background: rgba(255,255,255,.88); color: var(--blue); font-size: 26px; line-height: 1;
  display: grid; place-items: center; box-shadow: var(--shadow); z-index: 4;
  transition: .2s; opacity: 0;
}
.carousel:hover .carousel-arrow{ opacity: 1; }
.carousel-arrow:hover{ background: var(--orange); color: #fff; }
.carousel-arrow.prev{ left: 12px; }
.carousel-arrow.next{ right: 12px; }

.carousel-dots{
  position: absolute; bottom: 14px; left: 0; right: 0; z-index: 4;
  display: flex; justify-content: center; gap: 8px;
}
.carousel-dots .dot{
  width: 9px; height: 9px; border-radius: 50%; border: 0; cursor: pointer; padding: 0;
  background: rgba(255,255,255,.6); transition: .2s;
}
.carousel-dots .dot.is-active{ background: var(--orange); width: 22px; border-radius: 6px; }

.carousel-thumbs{ display: flex; gap: 10px; margin-top: 12px; }
.carousel-thumbs .thumb{
  flex: 1; padding: 0; border: 2px solid transparent; border-radius: 8px; overflow: hidden;
  cursor: pointer; background: none; aspect-ratio: 16/11; transition: .2s;
}
.carousel-thumbs .thumb img{ width: 100%; height: 100%; object-fit: cover; display: block; }
.carousel-thumbs .thumb.is-active{ border-color: var(--orange); }

/* ---------- Generic card grid ---------- */
.grid { display: grid; gap: 26px; margin-top: 46px; }
.grid-2{ grid-template-columns: repeat(2,1fr); }
.grid-3{ grid-template-columns: repeat(3,1fr); }
.grid-4{ grid-template-columns: repeat(4,1fr); }

.card{
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-card);
  padding: 30px; transition: .22s ease; box-shadow: var(--shadow);
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card .ico{
  width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(14,58,95,.07); color: var(--blue); margin-bottom: 18px;
}
.card .num-tag{ font-size: 13px; font-weight: 800; color: var(--orange); letter-spacing: .1em; }
.card h3{ font-size: 18px; color: var(--blue); margin: 8px 0 10px; }
.card p{ font-size: 15px; color: var(--muted); margin: 0; }

/* ---------- Ore type cards ---------- */
.ore-card { position: relative; overflow: hidden; }
.ore-card .ore-img{
  height: 150px; border-radius: 10px; margin-bottom: 18px;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  display: grid; place-items: center; color: #fff;
}
.ore-card h3{ color: var(--blue); }
.ore-card .flow{ display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 12px; font-size: 13px; color: var(--muted); font-weight: 600; }
.ore-card .flow span{ background: var(--bg); padding: 5px 10px; border-radius: 6px; border: 1px solid var(--line); }
.ore-card .flow .arr{ color: var(--muted); background: none; border: 0; padding: 0; }

/* ---------- Process flow (4-stage + recovery branch) ---------- */
.flow-wrap {
  margin-top: 46px; background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px 28px; box-shadow: var(--shadow);
}
.flow-line{ display: flex; align-items: stretch; justify-content: center; flex-wrap: wrap; gap: 10px; }
.flow-arrow{ align-self: center; color: var(--orange); font-size: 22px; font-weight: 800; line-height: 1; }
.flow-node{
  background: var(--white); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; min-width: 150px; text-align: center;
  box-shadow: 0 4px 14px rgba(14,58,95,.08);
  display: flex; flex-direction: column; justify-content: center; gap: 2px;
}
.flow-node .fn-cap{ font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.flow-node .fn-no{ font-size: 12px; font-weight: 800; color: var(--orange); letter-spacing: .08em; }
.flow-node .fn-name{ font-size: 16px; font-weight: 800; color: var(--blue); }
.flow-node .fn-equip{ font-size: 12px; color: var(--muted); }
.flow-rom{ flex: 0 0 auto; min-width: 128px; background: var(--blue); border-color: var(--blue-2); }
.flow-rom .fn-cap,
.flow-rom .fn-name{ color: #fff; }
.flow-stage{ flex: 1 1 200px; min-width: 200px; }
.flow-stage--recovery{ border-color: var(--orange); border-width: 2px; }

/* recovery branch under gold recovery */
.flow-branch {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 14px; margin-top: 22px; padding-top: 22px; border-top: 1px dashed var(--line);
}
.fb-node{
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px 18px;
  text-align: center; box-shadow: 0 4px 14px rgba(14,58,95,.08); min-width: 160px;
  display: flex; flex-direction: column; gap: 2px;
}
.fb-title{ font-size: 15px; font-weight: 800; color: var(--blue); }
.fb-sub{ font-size: 12px; color: var(--muted); }
.fb-arrow{ color: var(--orange); font-size: 22px; font-weight: 800; line-height: 1; }
.fb-result{
  background: var(--orange); border: 2px solid var(--orange-hover); border-radius: 10px; padding: 12px 20px;
  text-align: center; min-width: 180px; display: flex; flex-direction: column; gap: 2px;
}
.ff-title{ font-size: 16px; font-weight: 800; color: #fff; }
.ff-sub{ font-size: 12px; color: rgba(255,255,255,.9); }
.flow-note{
  margin: 22px 0 0; padding: 14px 18px; background: var(--bg); border-radius: 10px;
  font-size: 14px; color: var(--ink); text-align: center; border: 1px solid var(--line);
}
.flow-note b{ color: var(--orange); }

/* 4 process description cards (with device thumbnail) */
.stage-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 40px; }
.stage{ background: var(--white); border: 1px solid var(--line); border-radius: 10px; padding: 22px; text-align: center; box-shadow: var(--shadow); }
.stage .stage-ico{ color: var(--orange); margin-bottom: 10px; display: grid; place-items: center; }
.stage h4{ color: var(--blue); font-size: 16px; margin: 6px 0 2px; }
.stage .stage-tag{ display: inline-block; font-size: 12px; font-weight: 700; color: var(--muted); letter-spacing: .04em; margin-bottom: 10px; }
.stage p{ color: var(--muted); font-size: 13.5px; margin: 0; }

/* Process Design Depends on Your Ore */
.proc-design {
  margin-top: 40px; background: var(--blue-2); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius); padding: 30px 32px; text-align: center;
}
.proc-design h3{ color: #fff; font-size: 21px; margin: 0 0 10px; }
.proc-design p{ color: rgba(255,255,255,.82); font-size: 15px; max-width: 720px; margin: 0 auto 20px; }
.proc-design .btn-cta{ margin: 0 auto; }

/* ---------- Capacity ---------- */
.cap-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px;
  background: var(--white); box-shadow: var(--shadow); transition: .22s; position: relative; overflow: hidden;
}
.cap-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.cap-card::before{ content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 4px; background: var(--blue); }
.cap-card.feature::before{ background: var(--orange); }
.cap-range{ font-size: 30px; font-weight: 800; color: var(--blue); }
.cap-card.feature .cap-range{ color: var(--orange); }
.cap-name{ font-weight: 700; color: var(--ink); margin: 6px 0 12px; }
.cap-card ul{ list-style: none; padding: 0; margin: 0; }
.cap-card li{ font-size: 14.5px; color: var(--muted); padding: 6px 0 6px 22px; position: relative; }
.cap-card li::before{ content: "▸"; position: absolute; left: 0; color: var(--orange); }
.cap-note{ font-size: 13px; color: var(--muted); margin-top: 14px; border-top: 1px dashed var(--line); padding-top: 12px; }

/* ---------- Choose process ---------- */
.choose-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 44px; }
.choose-step{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.choose-step h4{ color: var(--blue); font-size: 17px; display: flex; align-items: center; gap: 10px; }
.choose-step h4 .q{ width: 28px; height: 28px; border-radius: 8px; background: rgba(14,58,95,.07); color: var(--blue); display: grid; place-items: center; font-size: 14px; font-weight: 800; }
.opt-row{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.opt{ font-size: 13.5px; padding: 7px 13px; border-radius: var(--radius-pill); border: 1px solid var(--line); background: var(--bg); color: var(--muted); cursor: pointer; transition: .15s; }
.opt:hover,
.opt.active{ background: var(--orange); color: #fff; border-color: var(--orange); }
.choose-cta{ text-align: center; margin-top: 40px; }

/* ---------- Zimbabwe case ---------- */
.case-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; margin-top: 46px; }
.case-photo{ border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); aspect-ratio: 16/11; position: relative; background: var(--bg); }
.case-photo img{ width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.case-specs{ display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 24px 0; }
.spec{ background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.spec .k{ font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.spec .v{ font-size: 18px; font-weight: 700; color: var(--ink); margin-top: 4px; }
.case-equip{ margin-top: 8px; }
.equip-chain{ display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.equip-chain .node{ background: rgba(14,58,95,.07); border: 1px solid rgba(14,58,95,.12); color: var(--blue); font-size: 13px; font-weight: 600; padding: 7px 12px; border-radius: 8px; }
.equip-chain .arr{ color: var(--muted); }

/* ---------- Africa map (navy continent + orange gold pins) ---------- */
.map-wrap { margin-top: 44px; display: grid; grid-template-columns: 1.25fr .75fr; gap: 36px; align-items: center; }
.africa-svg{ width: 100%; height: auto; display: block; overflow: visible; }

.af-stop-a{ stop-color: #2a6da3; }
.af-stop-b{ stop-color: var(--blue); }
.af-continent{ fill: url(#afLand); stroke: var(--blue-2); stroke-width: 2.5; filter: drop-shadow(0 10px 22px rgba(14,58,95,.22)); }
.af-pin--gold  .af-glow{ fill: var(--orange); opacity: .30; }
.af-pin--gold  .af-dot{ fill: var(--orange); stroke: #fff; stroke-width: 2.5; }
.af-pin--other .af-glow{ fill: #fff; opacity: .18; }
.af-pin--other .af-dot{ fill: #fff; stroke: var(--ink); stroke-width: 2; }
.af-labels text{ font-family: var(--font); font-size: 13.5px; font-weight: 700; fill: #12232f; }
.af-labels .af-label--key{ font-size: 15.5px; font-weight: 800; }

/* alternate map palettes: add class on <div class="map-wrap"> → map--orange / map--ink */
.map--orange .af-stop-a { stop-color: #ffc74a; }
.map--orange .af-stop-b{ stop-color: #ee9b06; }
.map--orange .af-continent{ stroke: #dc8b04; }
.map--orange .af-pin--gold .af-dot{ fill: #15202b; stroke: #fff; }
.map--orange .af-pin--other .af-dot{ fill: #fff; stroke: #15202b; }
.map--ink .af-stop-a{ stop-color: #26353f; }
.map--ink .af-stop-b{ stop-color: #08233a; }
.map--ink .af-continent{ stroke: #06203a; }
.map--ink .af-pin--gold .af-dot{ fill: var(--orange); stroke: #fff; }
.map--ink .af-pin--other .af-dot{ fill: #fff; stroke: var(--orange); }
.map--ink .af-labels text{ fill: #fff; stroke: #08233a; stroke-width: 3px; paint-order: stroke; stroke-linejoin: round; }

.map-legend{ display: flex; flex-direction: column; gap: 14px; }
.legend-item{ display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--ink); }
.legend-dot{ width: 15px; height: 15px; border-radius: 50%; flex: 0 0 auto; box-sizing: border-box; }
.legend-dot.gold{ background: var(--orange); border: 2.5px solid #fff; box-shadow: 0 0 0 1px var(--line); }
.legend-dot.blue{ background: #fff; border: 2px solid var(--ink); }
.map-list{ margin-top: 22px; }
.lp .map-list .row{ display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.lp .map-list .row .country{ font-weight: 700; color: var(--ink); }
.lp .map-list .row .tag{ font-size: 12.5px; padding: 3px 10px; border-radius: var(--radius-pill); }
.tag-gold{ background: rgba(255,107,26,.12); color: var(--orange); }
.tag-blue{ background: var(--bg); color: var(--muted); }

/* ---------- Project process ---------- */
.proc-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 46px; }
.proc-step{ position: relative; padding-left: 4px; }
.proc-step .n{
  width: 46px; height: 46px; border-radius: 12px; background: rgba(14,58,95,.07); color: var(--blue);
  display: grid; place-items: center; font-size: 18px; font-weight: 800; margin-bottom: 16px; border: 1px solid rgba(14,58,95,.12);
}
.proc-step h4{ color: var(--blue); font-size: 17px; margin: 0 0 8px; }
.proc-step p{ color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- Equipment ---------- */
.equip-card { text-align: left; }
.equip-card .equip-img{
  height: 170px; border-radius: 10px; margin-bottom: 18px;
  background:var(--bg);
  display: grid; place-items: center; color: #fff; font-size: 14px; font-weight: 600;
}
@supports (aspect-ratio:4/3){.equip-card .equip-img{height:auto;aspect-ratio:1/1;position:relative;overflow:hidden}.equip-card .equip-img img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain}}
.equip-card h3{ font-size: 18px; color: var(--blue); }
.equip-params{ list-style: none; padding: 0; margin: 12px 0 16px; }
.equip-params li{ font-size: 14px; color: var(--muted); padding: 4px 0; border-bottom: 1px dashed var(--line); display: flex; justify-content: space-between; }
.equip-params li b{ color: var(--ink); font-weight: 700; }
.learn-more{ color: var(--orange); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.learn-more:hover{ color: var(--orange-hover); }

/* ---------- Related products (beneficiation / gold line) ---------- */
.rel-prod {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-card);
  padding: 26px; box-shadow: var(--shadow); transition: .22s ease; text-decoration: none; color: inherit;
}
.rel-prod:hover{ transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--orange); }
.rel-prod .rel-prod-ico{
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(14,58,95,.07); color: var(--blue); margin-bottom: 16px;
}
.rel-prod .rel-prod-ico svg{ width: 26px; height: 26px; }
.rel-prod h3{ font-size: 17px; color: var(--blue); margin: 0 0 8px; }
.rel-prod p{ font-size: 14px; color: var(--muted); margin: 0 0 16px; flex: 1; }
.rel-prod .rel-prod-go{ color: var(--orange); font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; transition: gap .2s; }
.rel-prod:hover .rel-prod-go{ gap: 10px; }

/* ---------- FAQ ---------- */
.faq-list { margin-top: 40px; max-width: 880px; margin-left: auto; margin-right: auto; }
.faq-item{ border: 1px solid var(--line); border-radius: 10px; margin-bottom: 14px; overflow: hidden; background: var(--white); box-shadow: var(--shadow); }
.faq-q{
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 20px 24px; font-size: 17px; font-weight: 700; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q .plus{ color: var(--orange); font-size: 24px; transition: .2s; flex-shrink: 0; }
.faq-item.open .faq-q .plus{ transform: rotate(45deg); }
.faq-a{ max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p{ padding: 0 24px 22px; color: var(--muted); font-size: 15px; margin: 0; }

/* ---------- Final CTA + Form (blue gradient block) ---------- */
.section--cta { background: linear-gradient(115deg, var(--blue), var(--blue-2)); color: #fff; }
.section--cta .cta-left h2{ color: #fff; }
.section--cta .cta-left p{ color: rgba(255,255,255,.85); }
.section--cta .cta-points li{ color: #fff; }
.section--cta .cta-points li .ck{ color: var(--orange); }
.section--cta a{ color: var(--orange); }
.section--cta .cta-left p a{ font-weight: 700; }

.cta-grid{ display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: start; margin-top: 46px; }
.cta-left h2{ font-size: clamp(26px,3vw,38px); color: var(--blue); }
.cta-left p{ color: var(--muted); font-size: 17px; }
.cta-points{ list-style: none; padding: 0; margin: 26px 0 0; }
.cta-points li{ display: flex; gap: 12px; align-items: flex-start; color: var(--ink); margin-bottom: 14px; font-size: 15.5px; }
.cta-points li .ck{ color: var(--orange); flex-shrink: 0; margin-top: 2px; }

.form-card{ background: var(--white); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.form-card h3{ color: var(--blue); font-size: 21px; margin-bottom: 4px; }
.form-card .form-sub{ color: var(--muted); font-size: 14px; margin-bottom: 22px; }
.field{ margin-bottom: 16px; }
.field label{ display: block; font-size: 13.5px; font-weight: 700; color: var(--ink); margin-bottom: 7px; }
.field label .req{ color: #d9534f; }
.field input,
.field select,
.field textarea{
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: var(--font); color: var(--ink); background: var(--white); transition: .15s;
}
.field input:focus,
.field select:focus,
.field textarea:focus{ outline: none; border-color: var(--blue); background: #fff; }
.field-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.check-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.check{
  display: flex; align-items: center; gap: 9px; font-size: 14.5px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 13px; cursor: pointer; transition: .15s; background: var(--white);
}
.check:hover{ border-color: rgba(14,58,95,.25); }
.check input{ width: 16px; height: 16px; accent-color: var(--orange); }
.check.active{ border-color: var(--orange); background: rgba(255,107,26,.08); color: var(--ink); }
.form-submit{ width: 100%; justify-content: center; margin-top: 6px; }
.form-note{ font-size: 12.5px; color: var(--muted); margin-top: 12px; text-align: center; }
.form-success{
  display: none; background: #eaf6ee; border: 1px solid #b7e0c5; color: #1d6b3a;
  border-radius: 10px; padding: 16px; font-size: 14.5px; margin-top: 16px; font-weight: 600;
}

/* ---------- Footer (light, minimal) ---------- */
.site-footer { background: var(--white); color: var(--muted); padding: 56px 0 28px; border-top: 1px solid var(--line); }
.footer-grid{ display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h5{ color: var(--blue); font-size: 15px; margin: 0 0 16px; letter-spacing: .04em; }
.footer-grid a{ display: block; color: var(--muted); font-size: 14px; padding: 5px 0; }
.footer-grid a:hover{ color: var(--orange); }
.footer-brand p{ font-size: 14px; max-width: 280px; color: var(--muted); }
.footer-bottom{ border-top: 1px solid var(--line); margin-top: 36px; padding-top: 20px; font-size: 13px; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: .6s ease; }
.reveal.in{ opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .case-grid, .map-wrap, .cta-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3, .choose-grid, .proc-grid, .stage-row { grid-template-columns: 1fr 1fr; }
  .flow-line { flex-direction: column; align-items: stretch; }
  .flow-arrow { transform: rotate(90deg); align-self: center; }
  .flow-node { min-width: 0; }
  .flow-stage { flex: 0 0 auto; }
  .hero-photo { order: -1; aspect-ratio: 10/14; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .carousel-arrow { opacity: 1; }
}
@media (max-width: 620px) {
  .section{ padding: 64px 0; }
  .grid-2,
.grid-3,
.grid-4,
.choose-grid,
.proc-grid,
.stage-row,
.case-specs,
.field-row,
.check-grid{ grid-template-columns: 1fr; }
  .hero-stats{ gap: 0; }
  .stat{ padding: 0 18px; }
  .stat:first-child{ padding-left: 0; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width:980px){.hero-grid>*{min-width:0}.hero-text{min-width:0}.hero-actions{flex-wrap:wrap}.hero-stats{flex-wrap:wrap}}
@media (max-width:620px){.btn{white-space:normal;max-width:100%}.hero-actions .btn,.choose-cta .btn{width:100%;justify-content:center;text-align:center}.hero-stats .stat{flex:1 1 140px}.stat{padding:0 14px}}

.equip-img>a{display:block;width:100%;height:100%}

.ore-img img{min-height:0;min-width:0}

.rel-prod .rel-prod-ico{width:100%;height:180px;padding:8px;border-radius:12px;display:grid;place-items:center;background:#f4f7fa;border:1px solid var(--line);overflow:hidden;margin-bottom:16px}
.rel-prod .rel-prod-ico img{width:100%;height:100%;object-fit:contain;transition:transform .3s ease;min-height:0;min-width:0}
.rel-prod:hover .rel-prod-ico img{transform:scale(1.04)}