/* ==========================================================================
   Gekatex 官网样式系统
   工业表面处理耗材 · 汽车制造原厂应用
   ========================================================================== */

:root {
  --ink: #0d1117;
  --ink-2: #1f262e;
  --ink-3: #414b57;
  --muted: #68727e;
  --line: #dbe0e6;
  --line-strong: #bcc4cd;
  --paper: #ffffff;
  --bone: #f3f4f6;
  --bone-2: #e7eaee;
  --brand: #1d4e9b;
  --brand-2: #2f63bd;
  --brand-tint: #edf1f8;
  --steel: #8b95a1;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --wrap: 1280px;
  --gap: 24px;
  --nav-h: 72px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button { font-family: inherit; }

/* ---------- 版心 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 40px;
}

.wrap-wide { max-width: 1440px; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.12;
}

h1 { font-size: clamp(38px, 4.6vw, 64px); }
h2 { font-size: clamp(28px, 3vw, 42px); }
h3 { font-size: clamp(20px, 1.6vw, 24px); letter-spacing: -0.015em; }

p { margin: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--brand);
  opacity: 0.6;
}

.lede {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-3);
  max-width: 62ch;
}

.section {
  padding: 96px 0;
}
.section-tight { padding: 64px 0; }
.section-bone { background: var(--bone); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 56px;
}
.section-head .lede { margin-top: 18px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 46px;
  padding: 0 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: all 0.28s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: var(--brand); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--ink); background: var(--ink); color: #fff; }
.btn-light {
  background: #fff;
  color: var(--ink);
}
.btn-light:hover { background: var(--brand); color: #fff; }
.btn .arw { transition: transform 0.28s var(--ease); }
.btn:hover .arw { transform: translateX(3px); }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 90;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}
.nav-in {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand-mark { display: flex; align-items: center; }
.brand-mark img { height: 26px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}
.nav-links > a,
.nav-item > button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  background: none;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}
.nav-links > a:hover,
.nav-item > button:hover { color: var(--brand); background: var(--brand-tint); }
.nav-links > a.active { color: var(--brand); }
.nav-links > a.active::after {
  content: "";
  position: absolute;
}

.nav-item { position: relative; height: 100%; display: flex; align-items: center; }
.nav-item > button svg { transition: transform 0.25s var(--ease); opacity: 0.55; }
.nav-item:hover > button svg { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(var(--nav-h) - 10px);
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 300px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(16, 20, 26, 0.1);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.24s var(--ease);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
  font-size: 14px;
  color: var(--ink-2);
  border-radius: 0;
  transition: background 0.18s, color 0.18s;
}
.dropdown a:hover { background: var(--brand-tint); color: var(--brand); }
.dropdown a span.en { font-size: 11px; color: var(--muted); letter-spacing: 0.04em; }

/* 语言切换 */
.lang { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  cursor: pointer;
  transition: border-color 0.2s;
}
.lang-btn:hover { border-color: var(--ink-3); }
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 150px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(16, 20, 26, 0.12);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.22s var(--ease);
}
.lang.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu a {
  display: block;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--ink-2);
  border-radius: 0;
}
.lang-menu a:hover { background: var(--brand-tint); color: var(--brand); }
.lang-menu a.active { color: var(--brand); font-weight: 600; }

.nav-toggle { display: none; }
.mobile-menu { display: none; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: flex-end;
  background: #0d1015;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(96deg, rgba(6, 9, 13, 0.94) 0%, rgba(6, 9, 13, 0.74) 48%, rgba(6, 9, 13, 0.2) 82%);
}
.hero-in {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-block: 132px 76px;
}
.hero h1 {
  color: #fff;
  max-width: 15em;
  letter-spacing: -0.035em;
}
html[lang="zh-CN"] .hero h1 { max-width: 13em; letter-spacing: -0.02em; }
.hero .lede {
  color: rgba(255, 255, 255, 0.78);
  margin-top: 24px;
  max-width: 52ch;
}
.hero .eyebrow { color: #9fb6e8; }
.hero .eyebrow::before { background: #9fb6e8; }
.hero-actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }
.hero-actions .btn-ghost {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}
.hero-actions .btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }

/* ---------- 数据条 ---------- */
.stats {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 38px 32px 34px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b {
  display: block;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.1;
}
.stat b em { font-style: normal; font-size: 22px; color: var(--brand); margin-left: 2px; }
.stat span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* ---------- 分类卡片 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  padding: 0;
  overflow: hidden;
  transition: background 0.3s var(--ease);
}
.cat-card .thumb {
  position: relative;
  flex: none;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bone-2);
}
.cat-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.cat-card:hover .thumb img { transform: scale(1.045); }
.cat-card .body {
  padding: 30px 32px 34px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.cat-card .idx {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.cat-card h3 { color: var(--ink); }
.cat-card h3 .en {
  display: block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--brand);
  margin-top: 7px;
  text-transform: uppercase;
}
.cat-card p { font-size: 15px; color: var(--ink-3); line-height: 1.7; }
.cat-card .more {
  margin-top: auto;
  padding-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cat-card .more .arw { transition: transform 0.3s var(--ease); }
.cat-card:hover .more .arw { transform: translateX(5px); }
.cat-card:hover .more { color: var(--brand); }

/* ---------- 工艺条 ---------- */
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.flow-step {
  position: relative;
  padding: 40px 32px 40px 0;
  border-right: 1px solid var(--line);
}
.flow-step:last-child { border-right: 0; padding-right: 0; }
.flow-step .no {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--brand);
}
.flow-step h4 {
  margin-top: 16px;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.flow-step p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}
.flow-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 42px;
  height: 2px;
  background: var(--brand);
}

/* ---------- 产品网格 ---------- */
.prod-group { margin-bottom: 72px; }
.prod-group:last-child { margin-bottom: 0; }
.group-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 34px;
}
.group-head h3 { font-size: 22px; }
.group-head .en {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.group-head .count {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 28px;
}
.prod {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: #fff;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.prod:hover {
  border-color: var(--line-strong);
  box-shadow: 0 10px 30px rgba(13, 17, 23, 0.06);
}
.prod .ph {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.prod .ph img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6%;
  transition: transform 0.6s var(--ease);
}
.prod:hover .ph img { transform: scale(1.02); }
.prod .ph .tagline {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.9);
  padding: 4px 8px;
  border: 1px solid var(--line);
}
.prod .info {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.prod .model {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--brand);
}
.prod h4 {
  margin-top: 6px;
  font-size: 17px;
  letter-spacing: -0.01em;
  line-height: 1.35;
}
.prod .desc {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-3);
  flex: 1;
}
.prod .links {
  display: flex;
  gap: 8px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.doc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 0;
  transition: all 0.2s;
}
.doc-link:hover { color: #fff; background: var(--brand); border-color: var(--brand); }
.doc-link svg { opacity: 0.6; }
.doc-link:hover svg { opacity: 1; }

/* ---------- 页头（内页） ---------- */
.page-head {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
}
.page-head .bg {
  position: absolute;
  inset: 0;
}
.page-head .bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.page-head .bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 11, 15, 0.88), rgba(8, 11, 15, 0.42));
}
.page-head .in {
  position: relative;
  z-index: 2;
  padding-block: 96px 84px;
}
.page-head h1 { color: #fff; font-size: clamp(34px, 4vw, 54px); max-width: 17em; }
html[lang="zh-CN"] .page-head h1 { max-width: 15em; letter-spacing: -0.015em; }
.page-head .lede { color: rgba(255, 255, 255, 0.76); margin-top: 20px; max-width: 58ch; }
.page-head .eyebrow { color: #9fb6e8; }
.page-head .eyebrow::before { background: #9fb6e8; }

.crumb {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 22px;
}
.crumb a:hover { color: #fff; }
.crumb span { margin: 0 8px; opacity: 0.5; }

/* ---------- 分类导览 ---------- */
.cat-nav {
  position: sticky;
  top: var(--nav-h);
  z-index: 40;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.cat-nav .in {
  display: flex;
  gap: 28px;
  height: 56px;
  align-items: center;
  overflow-x: auto;
}
.cat-nav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.cat-nav a:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- 应用场景 ---------- */
.stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  margin-bottom: 20px;
  background: #fff;
}
.stage:nth-child(even) .stage-media { order: 2; }
.stage-media {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  background: var(--bone-2);
}
.stage-media img { width: 100%; height: 100%; object-fit: cover; }
.stage-body {
  padding: 52px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.stage-body .no {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--brand);
}
.stage-body h3 { margin-top: 14px; font-size: 26px; }
.stage-body .en {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}
.stage-body p { margin-top: 18px; font-size: 15px; line-height: 1.75; color: var(--ink-3); }
.stage-body ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.stage-body li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.6;
}
.stage-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 1px;
  background: var(--brand);
}
.stage-tags {
  display: flex;
  gap: 8px;
  margin-top: 26px;
  flex-wrap: wrap;
}
.stage-tags a {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  border-radius: 0;
  transition: all 0.2s;
}
.stage-tags a:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- 客户墙 ---------- */
.clients {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.client {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 108px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #8b939f;
  transition: color 0.25s, background 0.25s;
}
.client:hover { color: var(--ink); background: #fff; }
.client .lg { display: block; }
.client svg { width: 100%; height: 100%; fill: currentColor; }
.client .wordmark {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.client .wordmark.sm { font-size: 14px; letter-spacing: 0.18em; }

/* ---------- 表单 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.info-block { display: grid; gap: 30px; }
.info-item .k {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.info-item .v {
  margin-top: 8px;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.7;
}
.info-item .v a:hover { color: var(--brand); }

.form { display: grid; gap: 18px; }
.field { display: grid; gap: 7px; }
.field label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}
.field label .req { color: var(--brand-2); }
.field input,
.field textarea,
.field select {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.65; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(30, 63, 143, 0.09);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: 12px; color: var(--muted); line-height: 1.6; }
.form-status {
  font-size: 13px;
  padding: 12px 14px;
  border-radius: 0;
  display: none;
}
.form-status.ok { display: block; background: #eef7f0; color: #1c6b35; border: 1px solid #cfe7d6; }
.form-status.err { display: block; background: #fdf0f0; color: #8f2020; border: 1px solid #f0cdcd; }

.map-card {
  margin-top: 26px;
  border: 1px solid var(--line);
  background: var(--bone);
  padding: 22px;
}
.map-card .dot {
  width: 8px; height: 8px; background: var(--brand); border-radius: 50%;
  display: inline-block; margin-right: 8px;
}
.map-card .t { font-size: 13px; color: var(--ink-2); line-height: 1.7; }

/* ---------- 关于页 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.split-media { position: relative; }
.split-media img { width: 100%; }
.split-media .cap {
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.timeline {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.tl-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.tl-item .yr {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--brand);
}
.tl-item p { font-size: 15px; color: var(--ink-3); line-height: 1.75; }

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.value-grid-4 { grid-template-columns: repeat(4, 1fr); }
.value-cell {
  background: #fff;
  padding: 36px 30px;
}
.value-cell .n {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--brand);
}
.value-cell h4 { margin-top: 14px; font-size: 18px; }
.value-cell p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 下载区 ---------- */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.dl {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  padding: 26px 28px;
  transition: background 0.2s;
}
.dl:hover { background: var(--brand-tint); }
.dl .ic {
  width: 40px; height: 40px; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  color: var(--brand);
}
.dl .tx b { display: block; font-size: 15px; color: var(--ink); font-weight: 600; }
.dl .tx span { display: block; font-size: 12px; color: var(--muted); margin-top: 3px; }
.dl .arw { margin-left: auto; color: var(--muted); }

/* ---------- CTA ---------- */
.cta {
  background: var(--ink);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta .in {
  padding-block: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.cta h2 { color: #fff; max-width: 22ch; }
.cta p { color: rgba(255, 255, 255, 0.68); margin-top: 14px; font-size: 15px; }
.cta .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta .btn-ghost { border-color: rgba(255, 255, 255, 0.3); color: #fff; }
.cta .btn-ghost:hover { background: #fff; color: var(--ink); }

/* ---------- 页脚 ---------- */
.foot {
  background: #0c0f13;
  color: rgba(255, 255, 255, 0.62);
  padding: 64px 0 0;
  font-size: 13.5px;
}
.foot-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.foot-brand img { height: 24px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.foot-brand p { line-height: 1.8; max-width: 34ch; }
.foot h5 {
  margin: 0 0 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
}
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.foot a:hover { color: #fff; }
.foot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0 28px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}
.foot-bottom .icp a:hover { color: rgba(255, 255, 255, 0.8); }

/* ---------- 动效 ---------- */
/* 内容默认可见，动画仅作渐进增强 */
html.anim .reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html.anim .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .wrap { padding: 0 32px; }
  .clients { grid-template-columns: repeat(4, 1fr); }
  .contact-grid, .split { grid-template-columns: 1fr; gap: 48px; }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .value-grid, .value-grid-4 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  :root { --nav-h: 64px; }
  .nav-links, .lang { display: none; }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    background: none; border: 0; cursor: pointer;
  }
  .mobile-menu {
    display: none;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: #fff;
    z-index: 80;
    padding: 24px 32px 40px;
    overflow-y: auto;
  }
  .mobile-menu.open { display: block; }
  .mobile-menu a {
    display: block;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
    color: var(--ink);
  }
  .mobile-menu .sub a { padding-left: 16px; font-size: 14px; color: var(--ink-3); }
  .mobile-menu .langs { display: flex; gap: 12px; margin-top: 28px; }
  .mobile-menu .langs a {
    border: 1px solid var(--line);
    padding: 8px 14px;
    font-size: 13px;
    border-bottom: 1px solid var(--line);
  }
  .cat-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat { border-left: 0; padding: 26px 0; border-top: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .flow { grid-template-columns: 1fr; }
  .flow-step { border-right: 0; border-bottom: 1px solid var(--line); padding: 28px 0; }
  .stage { grid-template-columns: 1fr; }
  .stage:nth-child(even) .stage-media { order: 0; }
  .stage-media { min-height: 260px; }
  .stage-body { padding: 32px 26px; }
  .section { padding: 64px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; }
  .dl-grid { grid-template-columns: 1fr; }
  .value-grid, .value-grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-in { padding-block: 96px 56px; }
  .page-head .in { padding-block: 64px 56px; }
  .foot-top { grid-template-columns: 1fr; gap: 36px; }
  .wrap { padding: 0 24px; }
  .tl-item { grid-template-columns: 1fr; gap: 8px; }
  .clients { grid-template-columns: repeat(3, 1fr); }
  .client { height: 88px; }
}

/* ==========================================================================
   工业风增补组件
   ========================================================================== */

/* ---------- 语言选择：国旗 ---------- */
.lang-btn { gap: 8px; padding: 0 10px; height: 34px; font-size: 12.5px; letter-spacing: 0.04em; }
.lang-btn .flag { width: 17px; height: 12px; display: block; flex: none; box-shadow: 0 0 0 1px rgba(13,17,23,.1); }
.lang-menu { min-width: 168px; }
.lang-menu a { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.lang-menu a .flag { width: 17px; height: 12px; display: block; flex: none; box-shadow: 0 0 0 1px rgba(13,17,23,.1); }
.lang-menu a .lbl { flex: 1; }
.lang-menu a .code { font-size: 10.5px; letter-spacing: .06em; color: var(--muted); }

/* ---------- 文档申请（不可直接下载） ---------- */
.doc-link.locked { color: var(--ink-3); }
.doc-link.locked::after {
  content: "";
  width: 5px; height: 5px;
  background: var(--brand);
  margin-left: 2px;
}
.doc-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 18px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 2px solid var(--brand);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-3);
}
.doc-note svg { flex: none; margin-top: 2px; opacity: .7; }

/* ---------- 地图 ---------- */
.map-wrap {
  margin-top: 28px;
  border: 1px solid var(--line);
  background: var(--bone);
}
.map-wrap .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .03em;
}
.map-wrap .bar b { color: var(--ink-2); font-weight: 600; }
.map-frame { position: relative; width: 100%; height: 420px; background: var(--bone-2); overflow: hidden; }
.map-frame a { display: block; width: 100%; height: 100%; }
.map-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.map-attr {
  position: absolute;
  right: 8px;
  bottom: 6px;
  font-size: 10px;
  color: rgba(13, 17, 23, .45);
  letter-spacing: .02em;
}
.map-card-ov {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 2px solid var(--brand);
  padding: 12px 16px;
  display: grid;
  gap: 3px;
  max-width: 320px;
}
.map-card-ov b { font-size: 13px; letter-spacing: .04em; color: var(--ink); }
.map-card-ov span { font-size: 11.5px; color: var(--muted); line-height: 1.5; }

/* ---------- DUNS ---------- */
.duns-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .04em;
}
.duns-line b {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ink-2);
  font-weight: 600;
}
.foot .duns-line { color: rgba(255,255,255,.42); }
.foot .duns-line b { color: rgba(255,255,255,.72); }

/* ---------- 资料申请页 ---------- */
.req-panel {
  border: 1px solid var(--line);
  background: #fff;
}
.req-panel .head {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 26px 30px;
  border-bottom: 1px solid var(--line);
  background: var(--bone);
}
.req-panel .head .ic {
  width: 44px; height: 52px; flex: none;
  display: grid; place-items: center;
  background: #fff;
  border: 1px solid var(--line-strong);
  font-size: 10px; font-weight: 700; letter-spacing: .04em;
  color: var(--brand);
}
.req-panel .head .t b { display: block; font-size: 16px; color: var(--ink); font-weight: 600; }
.req-panel .head .t span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.req-panel .body { padding: 30px; }

.req-list { display: grid; gap: 0; border: 1px solid var(--line); }
.req-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-3);
}
.req-row:last-child { border-bottom: 0; }
.req-row .k { width: 132px; flex: none; color: var(--muted); font-size: 12px; letter-spacing: .05em; }
.req-row .v { color: var(--ink); font-weight: 500; }

/* ---------- 工业分割与编号 ---------- */
.rule-top { border-top: 1px solid var(--line); }
.num-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--steel);
  font-variant-numeric: tabular-nums;
}

/* 客户墙：图片型标识 */
.client img {
  max-width: 100%;
  max-height: 34px;
  width: auto;
  object-fit: contain;
  filter: grayscale(1);
  opacity: .78;
  transition: opacity .25s;
}
.client:hover img { opacity: 1; }

@media (max-width: 860px) {
  .lang-btn .flag, .lang-menu a .flag { width: 16px; height: 11px; }
  .map-frame { height: 260px; }
  .req-panel .head { padding: 20px 22px; }
  .req-panel .body { padding: 22px; }
  .req-row { flex-wrap: wrap; gap: 4px; }
  .req-row .k { width: 100%; }
}

/* ==========================================================================
   六语言 / 资料申请 / 产品规格 增补
   ========================================================================== */

/* ---------- 国旗 ---------- */
.flag svg { width: 100%; height: 100%; display: block; }
.lang-btn { display: inline-flex; align-items: center; gap: 7px; }
.lang-btn > span:not(.flag) { font-weight: 600; }
.lang-menu a.active { background: var(--brand-tint); }
.lang-menu a.active .lbl { color: var(--brand); font-weight: 600; }
.mobile-menu .langs a { display: flex; align-items: center; gap: 10px; }
.mobile-menu .langs .flag { width: 20px; height: 14px; }

/* ---------- 产品卡片规格 ---------- */
.prod .specs {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}
.prod .specs li {
  position: relative;
  padding-left: 15px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-3);
}
.prod .specs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 1px;
  background: var(--brand);
}
.prod .links { margin-top: auto; padding-top: 18px; }

/* ---------- 资料申请页 ---------- */
.req-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 56px;
  align-items: start;
}
.req-panel { position: sticky; top: calc(var(--nav-h) + 24px); }
.btn-ghost-dark {
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  background: transparent;
}
.btn-ghost-dark:hover { border-color: var(--ink); color: var(--ink); }

/* ---------- 客户墙 ---------- */
.client { padding: 0 20px; }
.client .lg { display: flex; align-items: center; justify-content: center; }
.client .lg img { width: 100%; height: 100%; object-fit: contain; }

/* ---------- 页首与区块的工业化细节 ---------- */
.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
}
.section-head h2 { letter-spacing: -0.02em; }
.foot .duns-line { margin-top: 14px; }
.cta h2 { text-wrap: balance; max-width: 22em; }
.section-head h2 { text-wrap: pretty; }
.section h2 { text-wrap: balance; }

@media (max-width: 1100px) {
  .req-layout { grid-template-columns: 1fr; gap: 34px; }
  .req-panel { position: static; }
}
@media (max-width: 860px) {
  .prod-grid { grid-template-columns: 1fr 1fr; gap: 22px 16px; }
  .client { height: 92px; padding: 0 12px; }
}
@media (max-width: 560px) {
  .prod-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; line-height: 1.22; }
  .page-head h1 { font-size: 30px; }
  .hero { min-height: 620px; }
}

/* 首页第 5 个分类（打磨抛光工具）横跨两列 */
@media (min-width: 860px) {
  .cat-grid .cat-card:nth-child(5) {
    grid-column: span 2;
    flex-direction: row;
  }
  .cat-grid .cat-card:nth-child(5) .thumb {
    flex: 0 0 50%;
    aspect-ratio: auto;
    min-height: 300px;
  }
  .cat-grid .cat-card:nth-child(5) .body {
    min-width: 0;
    justify-content: center;
    padding: 40px 46px;
  }
  .cat-grid .cat-card:nth-child(5) .more {
    margin-top: 0;
  }
}