:root {
  --brand-950: #241a10;
  --brand-900: #33251a;
  --brand-800: #4a3524;
  --brand-700: #7a4a1d;
  --brand-600: #96601f;
  --brand-500: #b0762a;
  --brand-100: #f2e2c9;
  --brand-50: #faf2e3;
  --orange: #f08300;
  --orange-600: #d97200;
  --orange-100: #fdf0dc;
  --ink: #241d15;
  --muted: #6f6455;
  --line: #e8ddcb;
  --bg: #fdfaf4;
  --bg-soft: #f7f0e4;
  --card: #fffdf8;
  --shade: 18, 18, 18;
  --dark: #1d1a16;
  --dark-2: #2b241d;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
  --shadow-sm: 0 1px 2px rgba(56, 38, 18, .06), 0 1px 3px rgba(56, 38, 18, .05);
  --shadow-md: 0 4px 16px rgba(56, 38, 18, .08);
  --shadow-lg: 0 12px 40px rgba(56, 38, 18, .12);
  --radius: 10px;
  --max: 1360px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 2px 20px rgba(56, 38, 18, .06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.site-footer .brand-mark img { filter: brightness(0) invert(1); opacity: .95; }
.brand-text strong {
  display: block;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .5px;
  color: var(--brand-900);
  line-height: 1.3;
}
.brand-text span {
  display: block;
  font-size: 10px;
  letter-spacing: 1.4px;
  color: var(--muted);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 10px 16px;
  font-size: 14.5px;
  color: #3f342a;
  border-radius: 6px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav a:hover { color: var(--brand-700); background: var(--brand-50); }
.nav a.active { color: var(--brand-700); font-weight: 600; }
.nav a.active::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--orange);
  margin-top: 4px;
  border-radius: 1px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  transition: background .2s, transform .2s;
  white-space: nowrap;
}
.header-cta:hover { background: var(--orange-600); transform: translateY(-1px); }

.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 6px;
  cursor: pointer;
  padding: 10px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--brand-900);
  border-radius: 1px;
  transition: transform .25s, opacity .25s;
}
.menu-toggle span + span { margin-top: 5px; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background-color: var(--brand-950);
  color: #fff;
  padding: 168px 0 0;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url("../assets/images/hero-refinery-v3.jpg?v=20261030") center 45% / cover no-repeat;
  transform-origin: 62% 45%;
  will-change: transform, filter;
}
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(0deg, rgba(var(--shade),.92) 0%, rgba(var(--shade),.80) 14%, rgba(var(--shade),.28) 34%, rgba(var(--shade),0) 52%),
    linear-gradient(100deg, rgba(var(--shade),.88) 0%, rgba(var(--shade),.78) 28%, rgba(var(--shade),.44) 58%, rgba(var(--shade),.20) 100%);
  pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 3; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 40%, #000 30%, transparent 75%);
}
/* 原右上角暖棕光晕（rgba(176,118,42,.35)）会在蓝色暮色照片上形成黄斑，已移除 */
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  max-width: 860px;
  gap: 40px;
  align-items: center;
  padding-bottom: 72px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 2px;
  color: #dfa55c;
  text-transform: uppercase;
  margin-bottom: 22px;
  max-width: 100%;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 2px;
  background: var(--orange);
}
.hero h1 {
  font-size: clamp(34px, 3.9vw, 60px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -.5px;
  margin-bottom: 18px;
}
.hero h1 em {
  font-style: normal;
  color: #ffb04d;
}
.hero-sub {
  font-size: 15px;
  letter-spacing: 3px;
  color: rgba(255,255,255,.55);
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero-desc {
  max-width: 640px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255,255,255,.75);
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: all .2s;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-600); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(240,131,0,.28); }
.btn-ghost { border-color: rgba(255,255,255,.28); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }


.hero-grid > *, .two-col > *, .contact-grid > * { min-width: 0; }
.hero-grid, .two-col, .contact-grid { min-width: 0; }

.hero-stats {
  position: relative;
  border-top: 1px solid rgba(255,255,255,.12);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.hero-stats .stat {
  padding: 26px 8px 30px;
  border-right: 1px solid rgba(255,255,255,.08);
  position: relative;
}
.hero-stats .stat::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 30px; height: 2px;
  background: var(--orange);
}
.hero-stats .stat:last-child { border-right: 0; }
.stat-num {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
  line-height: 1.2;
}
.stat-num small { font-size: 16px; color: var(--orange); margin-left: 2px; }
.stat-label { font-size: 13px; color: rgba(255,255,255,.5); margin-top: 6px; }

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--dark); color: #fff; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2, .section-head p, .hero h1 { text-wrap: balance; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--brand-600);
  background: var(--brand-50);
  padding: 5px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-dark .section-tag { color: #dfa55c; background: rgba(255,255,255,.08); }
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -.3px;
  margin-bottom: 16px;
}
.section-head p { font-size: 16px; color: var(--muted); line-height: 1.8; }
.section-dark .section-head p { color: rgba(255,255,255,.65); }

/* ---------- advantage cards ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.adv-card {
  background: var(--card);
  padding: 32px 26px 36px;
  transition: background .25s;
  position: relative;
}
.adv-card:hover { background: #fdf8ef; }
.adv-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}
.adv-card:hover::before { transform: scaleX(1); }
.adv-idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--orange);
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.adv-icon {
  position: relative;
  width: 64px; height: 64px;
  display: grid; place-items: center;
  margin-bottom: 20px;
}
.adv-icon .dial {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  transform: rotate(0deg);
  transition: transform .7s cubic-bezier(.22,.61,.36,1);
}
.adv-card:hover .adv-icon .dial { transform: rotate(36deg); }
.adv-icon .glyph {
  position: relative;
  width: 24px; height: 24px;
  stroke: var(--brand-700);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.adv-card:hover .adv-icon .glyph { stroke: var(--brand-600); }
.adv-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
.adv-card p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ---------- origin ---------- */
.origin-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.origin-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  position: relative;
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.origin-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.origin-fig {
  margin: -34px -28px 24px;
  height: 84px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #f9f3e9, #fffdfa);
  overflow: hidden;
  position: relative;
}
.origin-fig svg { width: 100%; height: 100%; display: block; }
.origin-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.origin-meta .rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.origin-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 2px;
  line-height: 1;
  margin-bottom: 0;
  letter-spacing: -2px;
}
.origin-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; line-height: 1.45; }
.origin-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* ---------- products ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.prod-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px 26px;
  transition: all .25s;
  display: flex;
  flex-direction: column;
}
.prod-card:hover {
  border-color: var(--brand-500);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.prod-model {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--brand-900);
  letter-spacing: -1.4px;
  line-height: 1;
  margin-bottom: 2px;
}
.prod-type {
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.prod-spec {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}
.prod-spec span { flex: 0 0 auto; }
.prod-spec b { color: var(--ink); font-weight: 600; text-align: right; line-height: 1.45; }
.prod-card .prod-dn {
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--brand-600);
  letter-spacing: .5px;
}

/* ---------- spec table ---------- */
.spec-table {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 14.5px;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.spec-table th,
.spec-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th {
  background: var(--dark);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .5px;
}
.spec-table th:first-child { width: 22%; }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table td:first-child {
  font-weight: 600;
  color: var(--ink);
  background: #faf3e8;
  width: 22%;
}
.spec-table tr:hover td { background: #fdfaf4; }
.spec-table tr:hover td:first-child { background: #f4e9d8; }

/* 联系页「选型需要的信息」：参数列更宽、行高更大，贴近印刷版式 */
.spec-table.spec-table-wide th:first-child,
.spec-table.spec-table-wide td:first-child { width: 30%; }
.spec-table.spec-table-wide th { padding: 22px 24px; font-size: 13.5px; letter-spacing: 1.2px; }
.spec-table.spec-table-wide td { padding: 19px 24px; }

.spec-table.info-table td:first-child,
.spec-table.info-table th:first-child { width: 34%; }

/* ---------- industries ---------- */
.ind-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.ind-item {
  text-align: center;
  padding: 28px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  transition: all .25s;
}
.ind-item:hover { border-color: var(--orange); background: #fffaf2; }
.ind-icon { width: 32px; height: 32px; margin: 0 auto 12px; stroke: var(--brand-600); fill: none; stroke-width: 1.5; }
.ind-item span { font-size: 13.5px; color: #3f342a; }

/* ---------- 品牌卡 ---------- */
.about-brand {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 56px 32px;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 22px;
  align-self: start;
}
.about-brand img {
  width: 100%;
  max-width: 168px;
  height: auto;
}
.about-brand-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .5px;
}
.about-brand-meta .dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--orange);
}

/* ---------- logo wall（照片墙） ---------- */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  border-radius: 10px;
  overflow: hidden;
}
.logo-card {
  position: relative;
  aspect-ratio: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 26px;
  overflow: hidden;
  isolation: isolate;
  background: var(--dark);
}
.logo-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transition: transform .8s cubic-bezier(.22,.61,.36,1);
}
.logo-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgba(8, 10, 12, .14) 0%,
    rgba(8, 10, 12, .34) 46%,
    rgba(8, 10, 12, .88) 100%
  );
  transition: opacity .5s;
}
.logo-card::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--orange);
  transform: translateX(-50%);
  transition: width .45s cubic-bezier(.22,.61,.36,1);
}
.logo-card:hover .logo-bg { transform: scale(1.06); }
.logo-card:hover::before { opacity: .88; }
.logo-card:hover::after { width: 64px; }
.logo-no {
  position: absolute;
  top: 10px;
  left: 18px;
  font-family: var(--mono);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -2px;
  color: #fff;
  opacity: .45;
  transition: opacity .35s;
  pointer-events: none;
}
.logo-card:hover .logo-no { opacity: .6; }
.logo-img {
  max-height: 44px;
  max-width: 186px;
  width: auto;
  height: auto;
  box-sizing: content-box;
  padding: 11px 16px;
  background: rgba(255, 255, 255, .96);
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
  margin-bottom: 18px;
  transition: transform .35s cubic-bezier(.22,.61,.36,1);
}
.logo-card:hover .logo-img { transform: translateY(-2px); }
.logo-card:nth-child(9) .logo-img { max-width: 268px; }
.logo-card:nth-child(2) .logo-img,
.logo-card:nth-child(6) .logo-img,
.logo-card:nth-child(7) .logo-img,
.logo-card:nth-child(8) .logo-img { max-height: 62px; }
.logo-name {
  position: absolute;
  left: 20px;
  bottom: 14px;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: #fff;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .85), 0 0 2px rgba(0, 0, 0, .55);
}
.logo-note {
  margin-top: 22px;
  text-align: center;
  font-size: 12.5px;
  color: #9d907c;
  letter-spacing: .3px;
}

/* ---------- 表盘背景 ---------- *//* ---------- 表盘背景 ---------- *//* ---------- 表盘背景 ---------- *//* ---------- 表盘背景 ---------- */
.section-dial { position: relative; overflow: hidden; }
.section-dial > .wrap { position: relative; z-index: 1; }
.section-dial::before {
  content: "";
  position: absolute;
  right: -200px;
  top: -300px;
  width: 640px; height: 640px;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0 53px,
    rgba(11, 76, 134, .07) 53px 54px
  );
  pointer-events: none;
}
.section-dial::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -150px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 131, 0, .07), transparent 70%);
  pointer-events: none;
}

/* ---------- 行业区同心圆 ---------- */
.section-radar { position: relative; overflow: hidden; }
.section-radar > .wrap { position: relative; z-index: 1; }
.section-radar::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 58%;
  transform: translate(-50%, -50%);
  width: 860px;
  height: 860px;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0 78px,
    rgba(11, 76, 134, .045) 78px 79px
  );
  pointer-events: none;
}
.section-radar::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 58%;
  width: 2px;
  height: 430px;
  transform: translate(-50%, -100%);
  background: linear-gradient(180deg, transparent, rgba(11, 76, 134, .05));
  pointer-events: none;
}

/* ---------- 配图 ---------- */
.fig { margin: 0; }
.fig img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}
/* 空图说（后台清空后）不留空白 */
figcaption:empty { display: none; }

.fig figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}
.fig-tall {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 20px;
  display: grid;
  place-items: center;
}
.fig-tall img {
  max-height: 520px;
  width: auto;
  max-width: 100%;
  margin: 0 auto;
  border: none;
  background: transparent;
}
.fig-tall figcaption {
  text-align: center;
  margin-top: 4px;
}
.fig-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: start;
}
.fig-wide {
  margin-top: 8px;
}
.fig-banner img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  object-position: center 42%;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, #f0dcbe, #e6cba4);
  color: var(--ink);
  border-top: 1px solid #ddc49c;
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 320px; height: 320px;
  border: 1px solid rgba(120, 88, 50, .12);
  border-radius: 50%;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  flex-wrap: wrap;
}
.cta-inner h2 { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.cta-inner p { color: #6d5f4d; font-size: 15px; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.6);
  padding: 64px 0 0;
  font-size: 13.5px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text span { color: rgba(255,255,255,.45); }
.footer-desc { margin-top: 18px; line-height: 1.9; color: rgba(255,255,255,.5); max-width: 300px; }
.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; line-height: 1.7; }
.footer-contact svg { width: 15px; height: 15px; stroke: var(--orange); fill: none; stroke-width: 1.8; flex-shrink: 0; margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: rgba(255,255,255,.4);
}
.footer-bottom a:hover { color: rgba(255,255,255,.7); }
.footer-bottom .icp { color: rgba(255,255,255,.4); text-decoration: none; }
.footer-bottom .icp:hover { color: rgba(255,255,255,.7); }

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(150deg, var(--dark), var(--dark-2));
  color: #fff;
  padding: 148px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 48px 48px;
}
.page-hero .wrap { position: relative; }
.page-hero-photo {
  background:
    linear-gradient(100deg, rgba(var(--shade),.95) 0%, rgba(var(--shade),.88) 32%, rgba(var(--shade),.55) 64%, rgba(var(--shade),.16) 100%),
    linear-gradient(180deg, rgba(var(--shade),.16) 0%, transparent 45%, rgba(var(--shade),.30) 100%),
    var(--hero-photo) center var(--hero-pos, 50%) / cover no-repeat,
    var(--brand-950);
}
.page-hero-product { --hero-photo: url("../assets/images/hero-product-w.jpg?v=20261029o"); }
.page-hero-tech { --hero-photo: url("../assets/images/hero-tech-w.jpg?v=20261029o"); --hero-pos: 46%; }
.page-hero-about { --hero-photo: url("../assets/images/hero-about-w.jpg?v=20261029q"); --hero-pos: 52%; }
.page-hero-contact { --hero-photo: url("../assets/images/hero-contact-w.jpg?v=20261030"); --hero-pos: 40%; }
.page-hero-photo::before { opacity: .55; }
.page-hero-photo p {
  color: rgba(255, 255, 255, .82);
  text-shadow: 0 1px 12px rgba(26, 22, 17, .5);
}
.page-hero-photo .breadcrumb { text-shadow: 0 1px 10px rgba(26, 22, 17, .45); }
.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,.45);
  margin-bottom: 18px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 700; line-height: 1.25; margin-bottom: 14px; }
.page-hero p { color: rgba(255,255,255,.65); max-width: 640px; font-size: 15.5px; }

/* ---------- content blocks ---------- */
.prose h2 { font-size: 24px; font-weight: 700; margin: 44px 0 16px; color: var(--brand-900); }
.prose h3 { font-size: 18px; font-weight: 600; margin: 30px 0 12px; color: var(--brand-800); }
.prose p { margin-bottom: 14px; color: #4c4137; line-height: 1.9; }
.prose ul { margin: 0 0 16px 0; }
.prose ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 9px;
  color: #4c4137;
  line-height: 1.8;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 11px;
  width: 6px; height: 6px;
  background: var(--orange);
  border-radius: 1px;
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }

/* product detail: figure + body */
.prod-detail {
  display: grid;
  grid-template-columns: 0.62fr 1.38fr;
  gap: 48px;
  align-items: start;
}
.prod-figure {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  position: sticky;
  top: 96px;
}
.prod-figure img { width: 100%; height: auto; display: block; }
.prod-figure figcaption {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  font-family: var(--mono);
  letter-spacing: .5px;
}
.prod-body .section-tag { margin-bottom: 10px; }
.prod-body h2 { font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 12px; letter-spacing: -.3px; }
.prod-code {
  position: relative;
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1;
  color: var(--brand-800);
  margin-bottom: 22px;
  padding-bottom: 12px;
}
.prod-code::after {
  content: "";
  position: absolute;
  left: 2px;
  bottom: 0;
  width: 34px;
  height: 3px;
  background: var(--orange);
}
.prod-code .pc-kicker {
  display: block;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .34em;
  color: #a2907a;
  margin-bottom: 10px;
  text-indent: .34em;
}

.prod-body .lead { font-size: 15.5px; color: var(--muted); line-height: 1.85; margin-bottom: 22px; }
.prod-body h3 { font-size: 15px; font-weight: 600; color: var(--brand-800); margin: 22px 0 10px; }
.prod-body ul { margin-bottom: 22px; }
.prod-body ul li { position: relative; padding-left: 18px; margin-bottom: 8px; color: #4c4137; line-height: 1.8; font-size: 14.5px; }
.prod-body ul li::before { content: ""; position: absolute; left: 2px; top: 11px; width: 5px; height: 5px; background: var(--orange); border-radius: 1px; }
.prod-body .spec-table { margin-top: 4px; }
.prod-body .info-panel { margin-top: 22px; }

.prod-card img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  margin-bottom: 14px;
  display: block;
}

/* document download strip */
.doc-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: #faf3e8;
  border: 1px solid #ecdfcb;
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  padding: 26px 30px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.doc-strip .doc-ico {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: #fff;
  border-radius: 8px;
  flex-shrink: 0;
  border: 1px solid #ecdfcb;
}
.doc-strip .doc-ico svg { width: 20px; height: 20px; stroke: var(--orange-600); fill: none; stroke-width: 1.6; }
.doc-strip .doc-main { display: flex; align-items: center; gap: 16px; min-width: 240px; flex: 1; }
.doc-strip h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; color: var(--ink); }
.doc-strip p { font-size: 13.5px; color: var(--muted); margin: 0; line-height: 1.6; }
.doc-strip .btn { padding: 11px 22px; font-size: 14px; white-space: nowrap; }
.info-panel {
  background: #faf3e8;
  border-left: 3px solid var(--orange);
  padding: 26px 28px;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.info-panel h4 { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.info-panel p { font-size: 14px; color: var(--muted); margin: 0; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0;
}
.stat-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.stat-box .n {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--brand-700);
}
.stat-box .n small { font-size: 15px; color: var(--orange); }
.stat-box .l { font-size: 13px; color: var(--muted); margin-top: 4px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact-item:last-child { border-bottom: 0; }
.contact-ico {
  width: 42px; height: 42px;
  background: #faf3e8;
  border-radius: 8px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.contact-ico svg { width: 20px; height: 20px; stroke: var(--brand-700); fill: none; stroke-width: 1.7; }
.contact-item .k { font-size: 13px; color: var(--muted); margin-bottom: 3px; }
.contact-item .v { font-size: 16px; font-weight: 600; color: var(--ink); line-height: 1.6; }
.contact-item .v small { display: block; font-size: 13px; font-weight: 400; color: var(--muted); margin-top: 2px; }

/* ---------- hero 进场动画 ---------- */
@keyframes heroFocus {
  from { transform: scale(1.12); filter: blur(5px); }
  to { transform: scale(1); filter: blur(0); }
}
@keyframes heroShadeIn {
  from { opacity: .78; }
  to { opacity: 1; }
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes tickGrow {
  from { width: 0; }
  to { width: 30px; }
}

.first-visit .hero-bg {
  animation: heroFocus 2.6s cubic-bezier(.19,.75,.28,1) both;
}
.first-visit .hero-shade {
  animation: heroShadeIn 2s ease-out both;
}
.first-visit .eyebrow,
.first-visit .hero h1,
.first-visit .hero-sub,
.first-visit .hero-desc,
.first-visit .hero-actions,
.first-visit .hero-stats .stat {
  animation: riseIn .78s cubic-bezier(.22,.61,.36,1) both;
}
.first-visit .eyebrow { animation-delay: .28s; }
.first-visit .hero h1 { animation-delay: .40s; }
.first-visit .hero-sub { animation-delay: .54s; }
.first-visit .hero-desc { animation-delay: .64s; }
.first-visit .hero-actions { animation-delay: .76s; }
.first-visit .hero-stats .stat:nth-child(1) { animation-delay: .88s; }
.first-visit .hero-stats .stat:nth-child(2) { animation-delay: .96s; }
.first-visit .hero-stats .stat:nth-child(3) { animation-delay: 1.04s; }
.first-visit .hero-stats .stat:nth-child(4) { animation-delay: 1.12s; }

.first-visit .hero-stats .stat::before {
  animation: tickGrow .55s cubic-bezier(.22,.61,.36,1) both;
}
.first-visit .hero-stats .stat:nth-child(1)::before { animation-delay: 1.06s; }
.first-visit .hero-stats .stat:nth-child(2)::before { animation-delay: 1.14s; }
.first-visit .hero-stats .stat:nth-child(3)::before { animation-delay: 1.22s; }
.first-visit .hero-stats .stat:nth-child(4)::before { animation-delay: 1.30s; }

@media (prefers-reduced-motion: reduce) {
  .first-visit .hero-bg,
  .first-visit .hero-shade,
  .first-visit .eyebrow,
  .first-visit .hero h1,
  .first-visit .hero-sub,
  .first-visit .hero-desc,
  .first-visit .hero-actions,
  .first-visit .hero-stats .stat,
  .first-visit .hero-stats .stat::before {
    animation: none;
  }
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 地图 ---------- */
.map-block {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  margin-top: 64px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.map-figure {
  position: relative;
  margin: 0;
  min-height: 360px;
  border-right: 1px solid var(--line);
}
.map-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.map-open {
  position: absolute;
  left: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  background: rgba(255, 253, 248, .95);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink);
  box-shadow: 0 6px 18px rgba(60, 45, 25, .12);
  transition: background .25s, border-color .25s;
}
.map-open svg { width: 15px; height: 15px; color: var(--orange-600); }
.map-open:hover { background: #fff; border-color: #d9c9b0; }
.map-side {
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.map-side .section-tag { align-self: flex-start; }
.map-side h3 { font-size: 22px; margin: 14px 0 22px; }
.map-list { display: grid; gap: 18px; }
.map-list > div {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 10px;
}
.map-list dt {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .12em;
  padding-top: 3px;
}
.map-list dd {
  margin: 0;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.75;
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding-top: 132px; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .ind-grid { grid-template-columns: repeat(3, 1fr); }
  .logo-wall { grid-template-columns: repeat(3, 1fr); gap: 5px; }
  .logo-img { max-height: 34px; max-width: 150px; padding: 9px 13px; }
  .logo-no { font-size: 34px; top: 8px; left: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .two-col, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .map-block { grid-template-columns: 1fr; margin-top: 44px; }
  .map-figure { min-height: 280px; border-right: 0; border-bottom: 1px solid var(--line); }
  .map-side { padding: 30px 26px; }
  .prod-detail { grid-template-columns: 1fr; gap: 32px; }
  .prod-figure { position: static; max-width: 420px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .nav, .header-cta { display: none; }
  .fig-banner img { height: 220px; }
  .adv-icon { width: 74px; height: 74px; }
  .adv-icon .glyph { width: 28px; height: 28px; }
  .fig-grid { grid-template-columns: 1fr; gap: 34px; }
  .fig-tall { padding: 18px 12px; }
  .fig-tall img { max-height: 420px; }
  .menu-toggle { display: block; }
  .eyebrow { font-size: 10.5px; letter-spacing: 1.1px; gap: 8px; }
  .eyebrow::before { width: 18px; }
  .hero-sub { font-size: 12px; letter-spacing: 1.6px; }
  .hero-desc { font-size: 15px; }
  .nav.open {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px;
    box-shadow: var(--shadow-md);
    align-items: stretch;
  }
  .nav.open a { padding: 13px 8px; border-bottom: 1px solid var(--line); }
  .nav.open a.active::after { display: none; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 22px; line-height: 1.35; }
  .prod-body h2 { font-size: 23px; }
  .hero { padding-top: 116px; }
  .page-hero-photo {
    background:
      linear-gradient(180deg, rgba(var(--shade),.93) 0%, rgba(var(--shade),.86) 50%, rgba(var(--shade),.94) 100%),
      var(--hero-photo) center var(--hero-pos, 46%) / cover no-repeat,
      var(--brand-950);
  }
  .hero-bg {
    background-image: url("../assets/images/hero-refinery-m-v3.jpg?v=20261030");
    background-position: center 26%;
    transform-origin: 50% 30%;
  }
  .hero-shade {
    background:
      linear-gradient(0deg, rgba(var(--shade),.90) 0%, rgba(var(--shade),.78) 18%, rgba(var(--shade),.38) 40%, rgba(var(--shade),.14) 60%),
      linear-gradient(180deg, rgba(var(--shade),.86) 0%, rgba(var(--shade),.74) 52%, rgba(var(--shade),.90) 100%);
  }
  .hero-grid { max-width: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats .stat:nth-child(2) { border-right: 0; }
  .hero-stats .stat:nth-child(1), .hero-stats .stat:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,.08); }
  .adv-grid { grid-template-columns: 1fr; }
  .origin-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-wall { grid-template-columns: repeat(2, 1fr); gap: 5px; }
  .logo-no { font-size: 34px; }
  .logo-card:nth-child(n) .logo-img { max-height: 32px; max-width: 130px; }
  .logo-card:last-child:nth-child(odd) { grid-column: span 2; aspect-ratio: 3.4; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-head { margin-bottom: 36px; }
  .spec-table { font-size: 13.5px; }
  .spec-table th, .spec-table td { padding: 14px 16px; }
  .stat-row { grid-template-columns: 1fr; }
  .page-hero { padding: 120px 0 48px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .map-figure { min-height: 260px; }
  .map-side { padding: 26px 20px; }
  .map-side h3 { font-size: 19px; }
}

@media (max-width: 480px) {
  .prod-grid, .ind-grid { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); gap: 4px; border-radius: 8px; }
  .logo-card { aspect-ratio: 1.35; padding: 16px 12px 34px; }
  .logo-card:last-child:nth-child(odd) { grid-column: span 2; aspect-ratio: 3; }
  .logo-card:nth-child(n) .logo-img { max-height: 28px; max-width: 118px; padding: 7px 10px; margin-bottom: 12px; }
  .logo-card:nth-child(9) .logo-img { max-width: 190px; }
  .logo-name { font-size: 11px; letter-spacing: .1em; left: 12px; bottom: 10px; }
  .logo-no { top: 6px; left: 10px; font-size: 26px; letter-spacing: -1px; }


  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats .stat { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.08); }
}