:root {
  --navy: #0b2f4f;
  --blue: #165a7f;
  --teal: #168a8a;
  --teal-dark: #0d6d70;
  --mint: #eaf6f5;
  --sand: #f6f3ec;
  --ink: #17212b;
  --muted: #62717e;
  --line: #d8e0e6;
  --white: #fff;
  --shadow: 0 18px 50px rgba(11, 47, 79, .10);
  --radius: 18px;
  --container: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button, input, textarea { font: inherit; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.narrow { width: min(calc(100% - 40px), 820px); margin-inline: auto; }
.screen-reader-text, .honeypot { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 9999; transform: translateY(-150%); background: var(--navy); color: white; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(11,47,79,.08); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--navy), var(--teal)); color: white; font-weight: 800; letter-spacing: -.03em; }
.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { color: var(--navy); font-size: 1rem; }
.brand-copy small { color: var(--muted); font-size: .72rem; margin-top: 4px; }
.site-nav { display: flex; align-items: center; gap: 22px; font-size: .93rem; font-weight: 650; }
.site-nav > a:not(.button):not(.language-switch) { color: #354858; }
.site-nav > a:hover { color: var(--teal-dark); }
.language-switch { min-width: 38px; text-align: center; color: var(--teal-dark); font-weight: 800; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; }
.menu-toggle span:not(.screen-reader-text) { display: block; height: 2px; background: var(--navy); margin: 5px 0; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--teal); border-radius: 999px; color: white; background: var(--teal); font-weight: 750; cursor: pointer; transition: .2s ease; }
.button:hover { background: var(--teal-dark); border-color: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(22,138,138,.2); }
.button:disabled { opacity: .6; cursor: wait; }
.button-small { min-height: 40px; padding-inline: 17px; font-size: .86rem; }
.text-link { color: var(--teal-dark); font-weight: 760; }
.eyebrow { display: inline-block; margin-bottom: 16px; color: var(--teal-dark); font-size: .75rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.hero { position: relative; overflow: hidden; padding: 88px 0 74px; background: linear-gradient(135deg, #f3f8fb 0%, #fff 45%, #edf8f6 100%); }
.hero::before { content: ""; position: absolute; width: 560px; height: 560px; right: -250px; top: -240px; border-radius: 50%; border: 90px solid rgba(22,138,138,.08); }
.hero-grid, .split-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(44px, 7vw, 92px); align-items: center; }
.hero h1 { max-width: 760px; margin: 0 0 22px; color: var(--navy); font-size: clamp(2.6rem, 5.3vw, 5rem); line-height: 1.06; letter-spacing: -.055em; }
.hero-copy > p { max-width: 680px; margin: 0 0 30px; color: #4d6170; font-size: 1.08rem; }
.hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.trust-list { display: flex; gap: 18px; flex-wrap: wrap; padding: 0; margin: 32px 0 0; list-style: none; color: var(--navy); font-size: .88rem; font-weight: 700; }
.trust-list li::before { content: "✓"; margin-right: 7px; color: var(--teal); }
.hero-visual { position: relative; min-height: 440px; display: grid; place-items: center; }
.visual-panel { position: relative; width: min(100%, 520px); padding: 34px; border: 1px solid rgba(255,255,255,.65); border-radius: 28px; background: linear-gradient(145deg, var(--navy), #184f6c 58%, var(--teal-dark)); color: white; box-shadow: 0 28px 70px rgba(11,47,79,.25); }
.visual-panel::after { content: ""; position: absolute; width: 130px; height: 130px; right: -24px; bottom: -26px; border-radius: 50%; background: rgba(255,255,255,.08); }
.visual-label { font-size: .72rem; font-weight: 800; letter-spacing: .14em; opacity: .75; }
.workflow-map { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: center; gap: 10px; margin: 56px 0; }
.workflow-map div { display: grid; place-items: center; min-height: 90px; text-align: center; border-radius: 14px; background: rgba(255,255,255,.1); font-size: .72rem; }
.workflow-map b { margin-top: 6px; font-size: .84rem; }
.visual-panel p { position: relative; z-index: 1; margin: 0; opacity: .72; font-size: .78rem; }
.section { padding: 92px 0; }
.section-soft { background: var(--sand); }
.section-dark { color: white; background: linear-gradient(135deg, var(--navy), #10283c 62%, #0a3c49); }
.section-heading { max-width: 760px; margin-bottom: 44px; }
.section-heading h1, .section-heading h2, .split-section h2 { margin: 0 0 16px; color: var(--navy); font-size: clamp(2rem, 4vw, 3.35rem); line-height: 1.15; letter-spacing: -.04em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 1.02rem; }
.section-heading.light h2, .section-heading.light .eyebrow { color: white; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { position: relative; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: white; transition: .2s ease; }
.card:hover { transform: translateY(-4px); border-color: rgba(22,138,138,.38); box-shadow: var(--shadow); }
.card h2, .card h3 { margin: 10px 0 12px; color: var(--navy); font-size: 1.25rem; line-height: 1.3; }
.card p { margin: 0 0 20px; color: var(--muted); }
.card-number { color: var(--teal); font-size: .78rem; font-weight: 850; letter-spacing: .12em; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding: 0; margin: 0; list-style: none; }
.process-grid li { min-height: 150px; padding: 24px; border: 1px solid rgba(255,255,255,.14); border-radius: 16px; background: rgba(255,255,255,.055); }
.process-grid span { display: block; margin-bottom: 32px; color: #74d0ce; font-size: .8rem; font-weight: 850; }
.process-grid b { font-size: .98rem; line-height: 1.4; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.stats-grid > div { min-height: 170px; display: grid; place-content: center; padding: 28px; background: white; text-align: center; }
.stats-grid strong { display: block; color: var(--navy); font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1; }
.stats-grid span { margin-top: 12px; color: var(--muted); font-size: .86rem; }
.split-section { background: linear-gradient(180deg, #fff, #f7fbfb); }
.split-section p { color: var(--muted); }
.feature-panel { padding: 38px; border-radius: 24px; background: var(--navy); color: white; box-shadow: var(--shadow); }
.feature-panel h3 { margin-top: 0; font-size: 1.5rem; }
.feature-panel p { color: rgba(255,255,255,.76); }
.feature-panel ul { margin: 24px 0 0; padding-left: 20px; }
.digital-board { display: grid; gap: 12px; padding: 30px; border-radius: 24px; background: var(--navy); box-shadow: var(--shadow); }
.digital-board > div { display: grid; grid-template-columns: 1fr auto; gap: 4px 20px; align-items: center; padding: 18px; border-radius: 12px; background: rgba(255,255,255,.08); color: white; }
.digital-board span { font-size: .78rem; opacity: .65; }
.digital-board b { grid-row: 1 / 3; grid-column: 2; font-size: 1.35rem; }
.digital-board small { opacity: .8; }
.note { display: block; margin-top: 16px; color: #6c7a84; }
.tag { display: inline-flex; padding: 5px 10px; border-radius: 999px; background: var(--mint); color: var(--teal-dark); font-size: .72rem; font-weight: 800; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 20px 6px; color: var(--navy); font-weight: 750; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; float: right; color: var(--teal); font-size: 1.3rem; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details > div { padding: 0 6px 22px; color: var(--muted); }
.inquiry-section { background: linear-gradient(135deg, #f4f9fb, #e7f5f2); }
.inquiry-form { padding: 30px; border-radius: 24px; background: white; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-grid label > span, .form-grid legend { display: block; margin-bottom: 7px; color: #324654; font-size: .82rem; font-weight: 700; }
.form-grid input, .form-grid textarea { width: 100%; border: 1px solid #cfd9df; border-radius: 10px; padding: 12px 13px; color: var(--ink); background: white; }
.form-grid input:focus, .form-grid textarea:focus { outline: 3px solid rgba(22,138,138,.13); border-color: var(--teal); }
.form-grid .full { grid-column: 1 / -1; }
.form-grid fieldset { padding: 0; border: 0; }
.checkbox-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.check { display: flex !important; align-items: flex-start; gap: 9px; }
.check input { width: auto; margin-top: 4px; }
.inquiry-form > .button { width: 100%; margin-top: 20px; }
.form-status { min-height: 24px; margin: 14px 0 0; font-size: .9rem; }
.form-status.is-success { color: #176b4c; }
.form-status.is-error { color: #a93030; }
.boundary-box { margin-top: 26px; padding: 20px; border-left: 4px solid var(--teal); background: rgba(255,255,255,.68); }
.boundary-box p { margin: 6px 0 0; color: var(--muted); }
.content-main { min-height: 65vh; padding: 80px 0; }
.entry h1 { margin: 0 0 18px; color: var(--navy); font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.1; letter-spacing: -.04em; }
.entry-meta { color: var(--muted); font-size: .86rem; }
.entry-content { font-size: 1.02rem; }
.entry-content h2 { margin-top: 44px; color: var(--navy); font-size: 1.8rem; }
.entry-content h3 { color: var(--navy); }
.entry-content p, .entry-content li { color: #485b68; }
.entry-content table { width: 100%; border-collapse: collapse; }
.entry-content th, .entry-content td { padding: 12px; border: 1px solid var(--line); text-align: left; }
.archive-grid { margin-top: 30px; }
.site-footer { padding-top: 68px; color: rgba(255,255,255,.74); background: #081e31; }
.footer-grid { display: grid; grid-template-columns: 1.35fr .7fr 1fr; gap: 64px; padding-bottom: 50px; }
.footer-brand .brand-copy strong { color: white; }
.footer-brand .brand-copy small { color: rgba(255,255,255,.6); }
.site-footer h3 { color: white; font-size: .95rem; }
.site-footer ul { padding: 0; list-style: none; }
.site-footer li { margin: 8px 0; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.1); font-size: .78rem; }
.error-page { text-align: center; }
@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .site-nav { position: absolute; left: 20px; right: 20px; top: 70px; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 11px 6px; }
  .site-nav .button { margin-top: 10px; }
  .hero-grid, .split-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 360px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .container, .narrow { width: min(calc(100% - 28px), var(--container)); }
  .header-inner { min-height: 68px; }
  .brand-copy small { display: none; }
  .hero { padding: 64px 0 50px; }
  .hero h1 { font-size: 2.55rem; }
  .hero-visual { min-height: auto; }
  .visual-panel { padding: 22px; }
  .workflow-map { grid-template-columns: 1fr 1fr; gap: 10px; margin: 32px 0; }
  .workflow-map > span { display: none; }
  .section { padding: 64px 0; }
  .card-grid, .process-grid, .stats-grid, .form-grid, .checkbox-grid, .footer-grid { grid-template-columns: 1fr; }
  .stats-grid > div { min-height: 135px; }
  .form-grid .full { grid-column: auto; }
  .footer-grid > div:first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

/* First-stage core finish */
html { scroll-behavior: smooth; overflow-x: hidden; }
body { overflow-x: hidden; }
a, button, input, textarea, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(22, 138, 138, .36);
  outline-offset: 3px;
}
img, svg, video, iframe { max-width: 100%; height: auto; }
p, li, td, th, h1, h2, h3, a { overflow-wrap: anywhere; }
.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link { position: fixed; left: 18px; top: -80px; z-index: 9999; padding: 12px 16px; border-radius: 8px; background: var(--navy); color: #fff; }
.skip-link:focus { top: 18px; }
.breadcrumbs { margin: 0 0 30px; color: var(--muted); font-size: .84rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: #9aaab4; }
.breadcrumbs a { color: var(--teal-dark); }
.archive-hero { max-width: 820px; margin: 0 0 46px; }
.archive-hero h1 { margin: 8px 0 18px; color: var(--navy); font-size: clamp(2.4rem, 5vw, 4.7rem); line-height: 1.08; letter-spacing: -.05em; }
.archive-hero p { margin: 0; color: var(--muted); font-size: 1.08rem; }
.content-card { display: flex; flex-direction: column; min-height: 290px; }
.content-card h2 { font-size: 1.28rem; }
.content-card .text-link { margin-top: auto; }
.entry-header { max-width: 840px; margin-bottom: 32px; }
.entry-lead { margin: 0 0 34px; color: #445b69; font-size: 1.18rem; line-height: 1.75; }
.entry-content > *:first-child { margin-top: 0; }
.entry-content a { color: var(--teal-dark); text-decoration: underline; text-underline-offset: 3px; }
.entry-content blockquote { margin: 34px 0; padding: 8px 0 8px 24px; border-left: 4px solid var(--teal); color: var(--navy); font-size: 1.15rem; }
.entry-content table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.related-content { margin-top: 76px; padding-top: 64px; border-top: 1px solid var(--line); }
.page-cta { display: flex; align-items: center; justify-content: space-between; gap: 40px; margin-top: 76px; padding: 38px; border-radius: 24px; background: linear-gradient(135deg, var(--navy), #0d5d68); color: #fff; }
.page-cta h2 { max-width: 720px; margin: 6px 0 10px; color: #fff; font-size: clamp(1.7rem, 3vw, 2.6rem); line-height: 1.2; }
.page-cta p { margin: 0; color: rgba(255, 255, 255, .75); }
.page-cta .eyebrow { color: #7edbd6; }
.page-cta .button { flex: 0 0 auto; background: #fff; color: var(--navy); }
.empty-state { grid-column: 1 / -1; padding: 44px; border: 1px dashed #c6d3da; border-radius: 18px; text-align: center; }
.field-error { margin: 8px 0 0; color: #a93030; font-size: .84rem; }
.form-grid small { display: block; margin-top: 7px; color: var(--muted); }
.inquiry-form button[aria-busy="true"] { cursor: wait; opacity: .72; }
.navigation.pagination { margin-top: 38px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; }
.page-numbers { display: inline-flex; min-width: 42px; min-height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.page-numbers.current { border-color: var(--teal); background: var(--teal); color: #fff; }
@media (max-width: 760px) {
  .page-cta { align-items: flex-start; flex-direction: column; padding: 28px 22px; }
  .page-cta .button { width: 100%; text-align: center; }
  .content-main { padding: 56px 0; }
  .archive-hero h1, .entry h1 { font-size: 2.35rem; }
  .entry-lead { font-size: 1.04rem; }
  .breadcrumbs { margin-bottom: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* V1.7 real Changsheng facility media */
.hero-photo { position: relative; min-height: 480px; overflow: hidden; border-radius: 30px; background: var(--navy); box-shadow: var(--shadow); }
.hero-photo > img { width: 100%; height: 100%; min-height: 480px; object-fit: cover; display: block; }
.hero-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 35%, rgba(5, 28, 45, .76) 100%); pointer-events: none; }
.hero-photo-caption { position: absolute; left: 28px; right: 28px; bottom: 26px; z-index: 2; display: grid; gap: 5px; color: white; }
.hero-photo-caption span { color: #91e2dd; font-size: .72rem; font-weight: 850; letter-spacing: .12em; }
.hero-photo-caption b { font-size: 1.35rem; }
.hero-photo-caption small { color: rgba(255,255,255,.78); }
.facility-proof-section { padding-top: 20px; }
.facility-proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.facility-proof-item, .facility-gallery figure, .entry-visual { margin: 0; overflow: hidden; border-radius: 18px; background: #eef4f5; }
.facility-proof-item img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; transition: transform .25s ease; }
.facility-proof-item:hover img { transform: scale(1.02); }
.facility-proof-item figcaption, .facility-gallery figcaption, .entry-visual figcaption { padding: 12px 14px; color: #4f6370; background: white; font-size: .82rem; }
.facility-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin: 0 0 46px; }
.facility-gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.content-card-media { display: block; margin: -26px -26px 20px; overflow: hidden; border-radius: 18px 18px 0 0; background: #edf3f4; }
.content-card-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; transition: transform .25s ease; }
.content-card:hover .content-card-media img { transform: scale(1.025); }
.entry-visual { margin: 0 0 42px; border-radius: 24px; box-shadow: var(--shadow); }
.entry-visual img { width: 100%; max-height: 600px; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
@media (max-width: 980px) {
  .facility-proof-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-photo, .hero-photo > img { min-height: 400px; }
}
@media (max-width: 640px) {
  .hero-photo, .hero-photo > img { min-height: 320px; }
  .hero-photo-caption { left: 18px; right: 18px; bottom: 18px; }
  .hero-photo-caption b { font-size: 1.08rem; }
  .facility-proof-grid, .facility-gallery { grid-template-columns: 1fr; }
  .content-card-media { margin: -26px -26px 18px; }
}