:root {
  --ink: #07111f;
  --ink-2: #0e263f;
  --steel: #24425f;
  --blue: #1c5d99;
  --green: #1f7a5b;
  --gold: #c6a15b;
  --gold-2: #e2c987;
  --paper: #f5f7fa;
  --paper-2: #eef3f7;
  --white: #ffffff;
  --text: #172131;
  --muted: #627184;
  --line: #dbe3ec;
  --shadow: 0 24px 60px rgba(7, 17, 31, .12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.top-strip {
  display: none;
  background: var(--ink);
  color: rgba(255, 255, 255, .76);
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.top-strip .container {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.top-strip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 22px;
}

.top-strip i {
  color: var(--gold-2);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid rgba(7, 17, 31, .06);
  backdrop-filter: blur(12px);
}

.header-inner {
  height: 98px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 260px;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 4px;
}

.brand-title {
  display: block;
  color: var(--ink);
  font-size: 23px;
  font-weight: 800;
  line-height: 1.15;
}

.brand-subtitle {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  position: relative;
  padding: 12px 16px;
  color: #1b2a3d;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: .2s ease;
}

.nav a:hover,
.nav a.active {
  color: #0b4a9e;
  background: transparent;
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: -18px;
  height: 2px;
  background: #0b4a9e;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 16px;
  color: var(--ink);
  font-weight: 700;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.minimal-hero {
  background: #faf8f6;
  padding: 66px 0 0;
}

.minimal-hero-grid {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 74px;
  align-items: center;
}

.minimal-copy {
  padding: 8px 0 48px;
  min-width: 0;
  max-width: 100%;
}

.giant-en {
  color: #1b1b1b;
  font-size: clamp(64px, 8vw, 112px);
  line-height: .95;
  font-weight: 300;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.giant-en.small {
  font-size: clamp(48px, 6vw, 86px);
  margin-bottom: 14px;
}

.minimal-copy h1,
.plain-head h2,
.minimal-about h2 {
  margin: 22px 0 18px;
  color: #1a1a1a;
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.18;
  font-weight: 500;
}

.minimal-copy p,
.minimal-about p,
.plain-head p {
  max-width: 720px;
  margin: 0 0 22px;
  color: #262b33;
  font-size: 15px;
  line-height: 2.05;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-all;
  line-break: anywhere;
}

.minimal-image {
  overflow: hidden;
  background: #eee;
}

.minimal-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.minimal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 28px;
}

.minimal-actions.center {
  justify-content: center;
}

.text-link {
  position: relative;
  color: #0b4a9e;
  font-weight: 700;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: currentColor;
}

.quiet-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 56px;
  border-top: 1px solid #e5e1dc;
}

.quiet-stats div {
  padding: 26px 20px;
  border-right: 1px solid #e5e1dc;
}

.quiet-stats div:last-child {
  border-right: 0;
}

.quiet-stats strong {
  display: block;
  color: #0b4a9e;
  font-size: 38px;
  line-height: 1;
}

.quiet-stats span {
  display: block;
  margin-top: 10px;
  color: #666;
  font-size: 15px;
}

.simple-section {
  background: #f7f7f7;
  padding: 64px 0;
}

.section-white {
  background: #fff;
}

.plain-head {
  margin-bottom: 34px;
}

.image-tile-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.image-tile {
  position: relative;
  min-height: 270px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #111;
}

.image-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .72;
  transition: .35s ease;
}

.image-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.16), rgba(0,0,0,.46));
}

.image-tile strong {
  position: relative;
  z-index: 1;
  padding: 18px;
  color: #fff;
  font-size: clamp(26px, 2.6vw, 42px);
  line-height: 1.2;
  text-align: center;
  font-weight: 800;
}

.image-tile:hover img {
  transform: scale(1.06);
  opacity: .88;
}

.directory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.directory-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: .2s ease;
}

.directory-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.directory-card span {
  width: max-content;
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  color: #0b4a9e;
  font-weight: 800;
  background: #eef5ff;
  border-radius: 999px;
}

.directory-card h3 {
  margin: 28px 0 12px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.25;
}

.directory-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.homepage-hero {
  background:
    linear-gradient(180deg, #fbfaf7 0%, #f2f6f8 100%);
}

.homepage-hero .giant-en {
  font-size: clamp(64px, 8vw, 118px);
  line-height: .92;
}

.homepage-hero .minimal-copy h1 {
  margin-top: 26px;
  color: #07111f;
  font-size: clamp(42px, 4.4vw, 60px);
  font-weight: 850;
  line-height: 1.12;
}

.home-hero-lead {
  max-width: 680px;
  color: #334155;
  font-size: 20px;
  line-height: 1.9;
}

.homepage-hero .btn-outline.dark-outline {
  color: #0b2239;
  background: #fff;
  border-color: #d8e2eb;
}

.homepage-hero .btn-outline.dark-outline:hover {
  color: #0b4a9e;
  border-color: #0b4a9e;
}

.home-proof-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 8px;
}

.home-proof-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  color: #10344b;
  font-size: 14px;
  font-weight: 800;
  background: #eaf3f5;
  border: 1px solid #d5e5ea;
  border-radius: 999px;
}

.compact-head {
  max-width: 760px;
}

.home-focus-grid,
.home-product-strip,
.home-content-grid,
.home-article-grid {
  display: grid;
  gap: 18px;
}

.home-focus-grid {
  grid-template-columns: 1.15fr 1fr 1fr;
}

.home-focus-card,
.home-knowledge-card,
.home-article-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: .2s ease;
}

.home-focus-card {
  min-height: 230px;
  padding: 26px;
}

.home-focus-card:hover,
.home-knowledge-card:hover,
.home-article-card:hover,
.home-product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.home-focus-card.primary {
  color: #fff;
  background: #0b2239;
  border-color: #0b2239;
}

.home-focus-card.primary h3 {
  color: #fff;
}

.refined-header {
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid #e5ecf2;
  box-shadow: 0 10px 34px rgba(7, 17, 31, .06);
}

.refined-header-inner,
.header-inner {
  height: 76px;
}

.refined-brand,
.brand {
  min-width: 218px;
}

.refined-brand img,
.brand img {
  width: 44px;
  height: 44px;
  border-radius: 7px;
}

.brand-title {
  font-size: 22px;
  letter-spacing: 0;
}

.brand-subtitle {
  font-size: 12px;
}

.refined-nav,
.nav {
  flex: 1;
  justify-content: center;
  gap: 3px;
}

.refined-nav a,
.nav a {
  padding: 8px 10px;
  color: #27384a;
  font-size: 14px;
  font-weight: 700;
  border-radius: 999px;
}

.refined-nav a:hover,
.refined-nav a.active,
.nav a:hover,
.nav a.active {
  color: #0b4a9e;
  background: #eef5ff;
}

.refined-nav a.active::after,
.nav a.active::after {
  display: none;
}

.quote-pill,
.phone-link {
  min-height: 42px;
  padding: 10px 16px;
  color: #fff;
  font-weight: 800;
  white-space: nowrap;
  background: #0b4a9e;
  border: 1px solid #0b4a9e;
  border-radius: 999px;
}

.quote-pill:hover,
.phone-link:hover {
  color: #fff;
  background: #073a7c;
}

.page-hero-clean {
  padding: 72px 0 58px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 17, 31, .94), rgba(16, 52, 75, .88)),
    url("../images/factory-1.png") center / cover no-repeat;
}

.page-hero-clean .section-kicker,
.page-hero-clean h1,
.page-hero-clean p {
  color: #fff;
}

.page-hero-clean .page-title h1 {
  max-width: 1080px;
  color: #fff;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.16;
}

.page-hero-clean p {
  max-width: 820px;
  color: rgba(255, 255, 255, .84);
  font-size: 18px;
}

.trust-panel-quiet {
  box-shadow: 0 18px 46px rgba(7, 17, 31, .08);
}

.article-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(7, 17, 31, .08);
}

.article-toc strong {
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 18px;
}

.article-toc a {
  padding: 9px 10px;
  color: var(--muted);
  border-radius: 6px;
  background: #f6f8fb;
}

.article-toc a:hover {
  color: #0b4a9e;
  background: #eef5ff;
}

.knowledge-article {
  max-width: 880px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(7, 17, 31, .08);
}

.knowledge-article section + section {
  margin-top: 42px;
  padding-top: 32px;
  border-top: 1px solid #e8eef4;
}

.knowledge-article h2 {
  margin: 0 0 16px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.25;
}

.knowledge-article h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.knowledge-article p,
.knowledge-article li {
  color: #536477;
  font-size: 17px;
  line-height: 1.9;
}

.article-lead {
  margin-top: 0;
  padding: 24px;
  color: #24384d;
  font-size: 19px;
  line-height: 1.9;
  background: #f3f8fb;
  border-left: 4px solid #0b4a9e;
  border-radius: 8px;
}

.article-note {
  margin-top: 18px;
  padding: 18px 20px;
  color: #24384d;
  line-height: 1.8;
  background: #fff8ec;
  border: 1px solid #f0dfbd;
  border-radius: 8px;
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.spec-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.spec-table th,
.spec-table td {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  color: #0b2239;
  background: #eef5ff;
}

.spec-table tr:last-child td {
  border-bottom: 0;
}

.evidence-grid,
.quote-checklist {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.evidence-grid div,
.quote-checklist div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.evidence-grid h3 {
  color: #0b4a9e;
}

.quote-checklist strong {
  display: block;
  margin-bottom: 8px;
  color: #0b2239;
  font-size: 18px;
}

.quote-checklist span {
  display: block;
  color: var(--muted);
  line-height: 1.75;
}

.check-list {
  display: grid;
  gap: 10px;
  padding-left: 24px;
}

.faq-answer {
  margin: 0 0 12px;
  color: #24384d;
  font-weight: 700;
}

.refined-faq-group {
  box-shadow: 0 18px 46px rgba(7, 17, 31, .08);
}

.article-index-card small {
  width: max-content;
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  color: #0b4a9e;
  font-size: 13px;
  background: #eef5ff;
  border-radius: 999px;
}

.home-focus-card span,
.home-knowledge-card span,
.home-article-card small {
  width: max-content;
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  color: #0b4a9e;
  font-weight: 900;
  background: #eef5ff;
  border-radius: 999px;
}

.home-focus-card.primary span {
  color: #0b2239;
  background: #fff;
}

.home-focus-card h3,
.home-knowledge-card h3 {
  margin: 26px 0 12px;
  font-size: 26px;
  line-height: 1.25;
}

.home-focus-card p,
.home-knowledge-card p,
.home-article-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.home-focus-card.primary p {
  color: rgba(255, 255, 255, .82);
}

.home-product-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.home-product-card {
  overflow: hidden;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: .2s ease;
}

.home-product-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.home-product-card div {
  padding: 22px;
}

.home-product-card h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.home-product-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.home-two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: 22px;
  align-items: stretch;
}

.home-why-card,
.home-authority-card {
  min-height: 100%;
  padding: 30px;
  border-radius: 8px;
}

.home-why-card {
  color: #fff;
  background: #10344b;
}

.home-why-card .section-kicker,
.home-why-card h2 {
  color: #fff;
}

.home-why-card ul {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.home-why-card li {
  padding: 16px;
  color: rgba(255, 255, 255, .84);
  line-height: 1.75;
  background: rgba(255, 255, 255, .08);
  border-radius: 8px;
}

.home-why-card strong {
  color: #fff;
}

.home-authority-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.home-authority-card img {
  width: 150px;
}

.home-authority-card p {
  color: var(--muted);
  line-height: 1.85;
}

.home-content-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.home-knowledge-card {
  min-height: 210px;
  padding: 24px;
}

.home-article-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.home-article-card {
  min-height: 190px;
  padding: 22px;
}

.home-article-card strong {
  margin: 18px 0 10px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.authority-section {
  background: #0b2239;
  color: #fff;
}

.authority-box {
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
}

.authority-emblem {
  width: 156px;
  max-width: 100%;
  align-self: center;
  padding: 10px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 18px 46px rgba(0, 0, 0, .18);
}

.authority-box .giant-en,
.authority-box h2 {
  color: #fff;
}

.authority-box p {
  max-width: 860px;
  margin: 0;
  color: rgba(255, 255, 255, .82);
  font-size: 17px;
  line-height: 2;
}

.authority-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  color: #0b2239;
  font-weight: 800;
  white-space: nowrap;
  background: #fff;
  border-radius: 6px;
}

.trust-panel {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.trust-panel img {
  width: 180px;
  max-width: 100%;
}

.trust-panel h2 {
  margin: 0 0 12px;
}

.trust-panel p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.text-link {
  color: #0b4a9e;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.faq-toc {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.faq-toc strong {
  color: var(--ink);
  font-size: 18px;
}

.faq-toc a {
  padding: 10px 12px;
  color: var(--muted);
  border-radius: 6px;
  background: #f6f8fb;
}

.faq-toc a:hover {
  color: #0b4a9e;
  background: #eef5ff;
}

.faq-groups {
  display: grid;
  gap: 24px;
}

.faq-group {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.faq-group-head {
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.faq-group-head span {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  margin-bottom: 14px;
  color: #fff;
  font-weight: 900;
  background: #0b4a9e;
  border-radius: 999px;
}

.faq-group-head h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.2;
}

.faq-group-head p,
.faq-item li {
  color: var(--muted);
  line-height: 1.85;
}

.faq-item {
  padding: 18px 0;
  border-bottom: 1px solid #edf0f4;
}

.faq-item:last-child {
  border-bottom: 0;
}

.faq-item h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.faq-item ul {
  margin: 0;
  padding-left: 22px;
}

.faq-item li + li {
  margin-top: 8px;
}

.faq-cta {
  margin: 8px 0 0;
}

.dark-outline {
  color: var(--ink);
  border-color: var(--ink);
}

.structured-article {
  max-width: 940px;
  font-size: 17px;
  line-height: 1.9;
}

.structured-article h2 {
  margin-top: 38px;
  font-size: clamp(28px, 3vw, 42px);
}

.structured-article h3 {
  margin-top: 24px;
  font-size: 24px;
}

.structured-article ul {
  padding-left: 24px;
}

.article-index-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-index-card {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: .2s ease;
}

.article-index-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.article-index-card small {
  color: #0b4a9e;
  font-weight: 900;
}

.article-index-card h2 {
  margin: 18px 0 12px;
  font-size: 24px;
  line-height: 1.3;
}

.article-index-card p {
  color: var(--muted);
  line-height: 1.75;
}

.project-tiles {
  grid-template-columns: repeat(4, 1fr);
}

.value-mosaic {
  display: grid;
  grid-template-columns: 1.05fr 1fr 1.05fr 1fr;
  grid-auto-rows: 210px;
  gap: 14px;
}

.value-tile {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-position: center;
  background-size: cover;
}

.value-tile.tall {
  grid-row: span 2;
}

.value-tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(6, 17, 31, .52);
}

.value-tile span {
  position: relative;
  z-index: 1;
  color: #fff;
  font-size: clamp(30px, 3.5vw, 56px);
  font-weight: 800;
  letter-spacing: .04em;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 720px;
  color: var(--white);
  background: var(--ink);
  overflow: hidden;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.08);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(7, 17, 31, .96), rgba(7, 17, 31, .83) 45%, rgba(7, 17, 31, .44)),
    linear-gradient(180deg, rgba(7, 17, 31, .1), rgba(7, 17, 31, .9));
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 130px;
  background: linear-gradient(180deg, transparent, var(--ink));
  pointer-events: none;
}

.hero-inner {
  padding: 112px 0 74px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--gold-2);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  border: 1px solid rgba(226, 201, 135, .42);
  border-radius: 4px;
  background: rgba(198, 161, 91, .12);
}

.hero h1 {
  max-width: 900px;
  margin: 26px 0 22px;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.08;
  font-weight: 900;
  overflow-wrap: anywhere;
  word-break: break-all;
  line-break: anywhere;
}

.hero-lead {
  max-width: 780px;
  margin: 0 0 28px;
  color: rgba(255, 255, 255, .86);
  font-size: 21px;
  overflow-wrap: anywhere;
  word-break: break-all;
  line-break: anywhere;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 38px;
  padding: 0;
  list-style: none;
}

.hero-tags li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 10px 13px;
  color: rgba(255, 255, 255, .86);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 4px;
  backdrop-filter: blur(12px);
  overflow-wrap: anywhere;
  word-break: break-all;
}

.hero-tags i {
  color: var(--gold-2);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 13px 22px;
  font-size: 15px;
  font-weight: 800;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: .2s ease;
}

.btn-primary {
  color: var(--white);
  background: var(--gold);
  box-shadow: 0 16px 36px rgba(0, 0, 0, .22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: #d2b16b;
}

.btn-dark {
  color: var(--white);
  background: var(--ink);
}

.btn-outline {
  color: var(--white);
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .32);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, .16);
}

.hero-stats {
  width: min(930px, 100%);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 64px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 8px;
  backdrop-filter: blur(18px);
}

.hero-stat {
  padding: 22px 24px;
  border-right: 1px solid rgba(255, 255, 255, .12);
}

.hero-stat:last-child {
  border-right: 0;
}

.hero-stat strong {
  display: block;
  color: var(--gold-2);
  font-size: 38px;
  line-height: 1;
}

.hero-stat span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, .7);
  font-size: 13px;
}

.section {
  padding: 86px 0;
}

.section-paper {
  background: var(--paper);
}

.section-dark {
  color: var(--white);
  background: var(--ink);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 38px;
}

.section-kicker {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.section-head h2,
.page-title h1 {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.18;
  overflow-wrap: anywhere;
  word-break: break-all;
  line-break: anywhere;
}

.section-dark .section-head h2,
.section-dark .section-head p {
  color: var(--white);
}

.section-head p {
  max-width: 620px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: .2s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 28px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  color: var(--white);
  background: var(--ink-2);
  border-radius: 6px;
}

.feature-card h3,
.product-card h3,
.case-card h3,
.app-card h3 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.feature-card p,
.product-card p,
.case-card p,
.app-card p {
  margin: 0;
  color: var(--muted);
}

.brand-wall {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.brand-tile {
  min-height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.brand-logo {
  width: 112px;
  height: 56px;
  display: grid;
  place-items: center;
}

.brand-logo img {
  max-width: 112px;
  max-height: 54px;
  object-fit: contain;
}

.brand-placeholder {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--white);
  font-weight: 900;
  background: var(--ink-2);
  border-radius: 6px;
}

.brand-tile strong {
  color: var(--ink);
  font-size: 14px;
}

.brand-tile span {
  color: var(--muted);
  font-size: 12px;
}

.product-card {
  display: flex;
  flex-direction: column;
}

.media {
  position: relative;
  height: 235px;
  background: var(--paper-2);
  overflow: hidden;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: .35s ease;
}

.card:hover .media img {
  transform: scale(1.05);
}

.product-body,
.case-body {
  padding: 24px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  color: var(--steel);
  font-size: 12px;
  font-weight: 800;
  background: var(--paper-2);
  border-radius: 4px;
}

.case-card .media {
  height: 260px;
}

.case-label {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 6px 10px;
  color: var(--white);
  font-size: 12px;
  font-weight: 800;
  background: var(--green);
  border-radius: 4px;
}

.split {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 56px;
  align-items: center;
}

.split-media {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.fact {
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.fact strong {
  display: block;
  color: var(--ink);
  font-size: 26px;
  line-height: 1;
}

.fact span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  counter-reset: step;
}

.process-item {
  min-height: 132px;
  padding: 20px;
  color: var(--white);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 8px;
}

.process-item::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 18px;
  color: var(--gold-2);
  font-weight: 900;
}

.app-card {
  padding: 24px;
}

.app-card i {
  color: var(--green);
  font-size: 28px;
  margin-bottom: 18px;
}

.page-hero {
  position: relative;
  padding: 92px 0 78px;
  color: #1a1a1a;
  background: #faf8f6;
  overflow: hidden;
}

.page-hero::before {
  display: none;
}

.page-title {
  position: relative;
}

.page-title h1 {
  color: #1a1a1a;
  font-size: clamp(50px, 7vw, 94px);
  font-weight: 300;
  letter-spacing: .02em;
}

.page-title p {
  max-width: 720px;
  margin: 14px 0 0;
  color: #242b35;
  font-size: 19px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.filter-btn {
  padding: 9px 14px;
  color: var(--steel);
  font-weight: 800;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.filter-btn.active,
.filter-btn:hover {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--ink);
  background: var(--paper);
}

td {
  color: var(--muted);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
}

.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 34px;
  align-items: start;
}

.contact-list {
  display: grid;
  gap: 14px;
}

.contact-item {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-item i {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--ink-2);
  border-radius: 6px;
  flex: 0 0 auto;
}

.contact-item h3 {
  margin: 0 0 5px;
  color: var(--ink);
  font-size: 17px;
}

.contact-item p {
  margin: 0;
  color: var(--muted);
}

.quote-box {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.quote-box h2 {
  margin: 0 0 10px;
  color: var(--ink);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 13px;
  color: var(--text);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.field textarea {
  min-height: 128px;
  resize: vertical;
}

.site-footer {
  color: rgba(255, 255, 255, .76);
  background: var(--ink);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding: 56px 0 38px;
}

.site-footer h3,
.site-footer h4 {
  margin: 0 0 16px;
  color: var(--white);
}

.site-footer p,
.site-footer li {
  margin: 0;
  color: rgba(255, 255, 255, .7);
}

.site-footer ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-bottom {
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 13px;
}

.float-actions {
  position: fixed;
  right: 18px;
  bottom: 24px;
  z-index: 40;
  display: grid;
  gap: 10px;
}

.float-actions a,
.back-top {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--ink-2);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(7, 17, 31, .18);
}

.back-top {
  border: 0;
  opacity: 0;
  pointer-events: none;
  transition: .2s ease;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  z-index: 80;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 18px;
  color: var(--white);
  background: var(--ink);
  border-radius: 6px;
  opacity: 0;
  transition: .2s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.empty {
  padding: 34px;
  color: var(--muted);
  text-align: center;
  background: var(--paper);
  border: 1px dashed var(--line);
  border-radius: 8px;
}

@media (max-width: 1080px) {
  .brand-wall,
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-3,
  .footer-main {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stats,
  .process {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stat:nth-child(2n) {
    border-right: 0;
  }

  .minimal-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .image-tile-grid,
  .project-tiles,
  .value-mosaic,
  .directory-grid,
  .article-index-grid,
  .home-focus-grid,
  .home-product-strip,
  .home-two-column,
  .home-content-grid,
  .home-article-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .authority-box,
  .trust-panel,
  .faq-layout,
  .home-authority-card,
  .article-shell,
  .evidence-grid,
  .quote-checklist {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .faq-toc {
    position: static;
  }

  .article-toc {
    position: static;
  }

  .value-tile.tall {
    grid-row: span 1;
  }
}

@media (max-width: 820px) {
  .top-strip {
    display: none;
  }

  .header-inner {
    height: 68px;
  }

  .nav {
    position: fixed;
    inset: 68px 0 auto;
    display: none;
    padding: 18px 20px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  body.nav-open .nav {
    display: grid;
  }

  .nav a {
    padding: 12px;
  }

  .phone-link {
    display: none;
  }

  .menu-toggle {
    display: grid;
    place-items: center;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding: 76px 0 54px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .hero-stats,
  .grid-2,
  .grid-3,
  .grid-4,
  .brand-wall,
  .split,
  .contact-grid,
  .footer-main,
    .gallery,
    .form-grid,
    .image-tile-grid,
    .project-tiles,
    .value-mosaic,
    .directory-grid,
    .article-index-grid,
    .home-focus-grid,
    .home-product-strip,
    .home-two-column,
    .home-content-grid,
    .home-article-grid,
    .article-shell,
    .evidence-grid,
    .quote-checklist {
    grid-template-columns: 1fr;
  }

  .knowledge-article {
    padding: 22px;
  }

  .directory-card {
    min-height: auto;
  }

  .minimal-hero {
    padding-top: 42px;
  }

  .giant-en {
    font-size: 44px;
    overflow-wrap: anywhere;
  }

  .giant-en.small {
    font-size: 44px;
  }

  .minimal-copy h1,
  .plain-head h2,
  .minimal-about h2 {
    font-size: 30px;
  }

  .minimal-copy p {
    font-size: 14px;
    line-height: 1.9;
  }

  .quiet-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .quiet-stats div:nth-child(2n) {
    border-right: 0;
  }

  .image-tile {
    min-height: 210px;
  }

  .section {
    padding: 62px 0;
  }

  .section-head {
    display: block;
  }

  .fact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .container {
    width: calc(100vw - 28px);
    max-width: calc(100vw - 28px);
  }

  .brand {
    min-width: auto;
  }

  .brand-title {
    font-size: 20px;
  }

  .brand-subtitle {
    display: none;
  }

  .actions .btn {
    width: 100%;
  }

  .hero h1 {
    font-size: 34px;
    line-height: 1.18;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-tags {
    display: grid;
  }

  .hero-tags li {
    width: 100%;
  }

  .page-title h1 {
    font-size: 34px;
  }

  .hero-stats,
  .fact-grid,
  .process,
  .quiet-stats {
    grid-template-columns: 1fr;
  }

  .quiet-stats div {
    border-right: 0;
    border-bottom: 1px solid #e5e1dc;
  }

  .hero-stat {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .12);
  }
}

.page-hero.page-hero-clean {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 17, 31, .95), rgba(16, 52, 75, .88)),
    url("../images/factory-1.png") center / cover no-repeat;
}

.page-hero.page-hero-clean .section-kicker,
.page-hero.page-hero-clean .page-title h1,
.page-hero.page-hero-clean .page-title p {
  color: #fff;
}

.page-hero.page-hero-clean .page-title h1 {
  max-width: 1080px;
  font-size: clamp(36px, 4.2vw, 56px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 0;
}

.page-hero.page-hero-clean .page-title p {
  max-width: 820px;
  color: rgba(255, 255, 255, .86);
  font-size: 18px;
}

@media (max-width: 520px) {
  .page-hero.page-hero-clean .page-title h1 {
    font-size: 34px;
  }
}


/* 2026-05-26 round 3 knowledge and home refinement */
.home-label {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  color: #0b4a9e;
  font-weight: 900;
  background: #eef5ff;
  border-radius: 999px;
}
.home-learning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.home-learning-grid .home-knowledge-card {
  min-height: 238px;
}
.authority-source-card img,
.trust-panel img,
.authority-mini-card img {
  background: #fff;
  border-radius: 8px;
}
.authority-source-card {
  grid-template-columns: 176px minmax(0, 1fr);
}
.authority-source-card img {
  width: 176px;
}
.knowledge-topic-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 28px;
  align-items: center;
}
.knowledge-topic-intro h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.15;
}
.knowledge-topic-intro p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}
.authority-mini-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(7, 17, 31, .08);
}
.authority-mini-card img {
  width: 138px;
  margin-bottom: 14px;
}
.knowledge-index-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.detailed-article p {
  margin: 0 0 16px;
}
.detailed-article section h2 {
  color: #07111f;
}
.article-cta-block {
  margin-top: 42px;
  padding: 26px;
  color: #fff;
  background: #0b2239;
  border-radius: 8px;
}
.article-cta-block h2,
.article-cta-block p {
  color: #fff;
}
.article-cta-block p {
  opacity: .82;
}
.article-cta-block .btn {
  margin-top: 10px;
  background: #fff;
  color: #0b2239;
}
.faq-item ul {
  list-style: none;
  padding-left: 0;
}
.faq-item li {
  position: relative;
  padding-left: 22px;
}
.faq-item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 8px;
  background: #0b4a9e;
  border-radius: 999px;
}
@media (max-width: 1080px) {
  .home-learning-grid,
  .knowledge-topic-intro,
  .knowledge-index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 820px) {
  .home-learning-grid,
  .knowledge-topic-intro,
  .knowledge-index-grid {
    grid-template-columns: 1fr;
  }
  .authority-source-card {
    grid-template-columns: 1fr;
  }
}


/* 2026-05-28 AI index footer and bilingual home title */
.home-title-en {
  margin: -6px 0 18px;
  color: #255070;
  font-size: clamp(18px, 2.2vw, 28px);
  font-weight: 800;
  letter-spacing: 0;
}
.ai-footer-main,
.footer-main.ai-footer-main {
  grid-template-columns: 1.6fr 1fr 1.1fr 1.55fr;
}
.machine-links a,
.footer-contact-readable a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.footer-schema-note {
  margin-top: 10px;
  color: rgba(255, 255, 255, .68);
  font-size: 13px;
  line-height: 1.7;
}
.footer-contact-readable li {
  margin-bottom: 8px;
}
@media (max-width: 1080px) {
  .ai-footer-main,
  .footer-main.ai-footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 820px) {
  .ai-footer-main,
  .footer-main.ai-footer-main {
    grid-template-columns: 1fr;
  }
}