:root {
  color-scheme: light;
  font-family: Inter, "Microsoft YaHei UI", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ink: #172a2a;
  --ink-2: #355050;
  --muted: #647878;
  --paper: #f4f6f2;
  --surface: #ffffff;
  --surface-2: #e8eeea;
  --line: #c9d4ce;
  --brand: #0c5a4b;
  --brand-dark: #083f36;
  --accent: #e3742f;
  --accent-dark: #b85118;
  --danger: #b42318;
  --success: #16794e;
  --max: 1240px;
  --radius: 4px;
  --section: clamp(64px, 8vw, 112px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; width: 100%; max-width: 100%; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; line-height: 1.18; letter-spacing: -0.025em; }
ul { margin: 0; padding: 0; list-style: none; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 200; padding: 10px 14px; color: #fff; background: var(--brand); }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 3px solid rgba(227, 116, 47, .5); outline-offset: 3px; }

.topline { background: var(--brand-dark); color: #dbe8e3; font-size: 13px; }
.topline .wrap { min-height: 38px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.topline-list { display: flex; align-items: center; gap: 22px; }
.topline strong { color: #fff; }
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255, 255, 255, .98); border-bottom: 1px solid var(--line); }
.header-inner { position: relative; min-height: 76px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 260px; }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; flex: 0 0 auto; overflow: hidden; padding: 3px; background: #fff; border: 1px solid var(--line); }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-copy { display: grid; gap: 2px; }
.brand-name { font-size: 17px; font-weight: 900; white-space: nowrap; }
.brand-sub { color: var(--muted); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.nav { position: static; align-self: stretch; margin-left: auto; display: flex; align-items: stretch; gap: 2px; }
.nav > a, .nav-item > a { min-height: 76px; display: inline-flex; align-items: center; gap: 8px; padding: 3px 12px 0; border-bottom: 3px solid transparent; font-weight: 700; font-size: 14px; }
.nav > a:hover, .nav-item > a:hover, .nav > a[aria-current="page"], .nav-item > a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--accent); }
.nav-item { position: static; display: inline-flex; align-items: stretch; }
.nav-arrow { width: 7px; height: 7px; margin-top: -4px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); opacity: .65; }
.mega-menu { position: absolute; top: 100%; left: 0; right: 0; z-index: 90; padding: 24px; background: var(--paper); border: 1px solid var(--line); border-top: 4px solid var(--brand); box-shadow: 0 18px 42px rgba(8, 63, 54, .16); opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.mega-menu::before { content: ""; position: absolute; left: 0; right: 0; top: -16px; height: 16px; }
.nav-item:hover .mega-menu, .nav-item:focus-within .mega-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mega-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 22px; }
.mega-feature { display: grid; grid-template-columns: 152px 1fr; min-width: 0; background: var(--surface); border: 1px solid var(--line); }
.mega-feature:hover { border-color: var(--brand); }
.mega-feature img { width: 152px; height: 100%; min-height: 132px; object-fit: cover; }
.mega-feature-copy { align-self: center; padding: 16px; }
.mega-feature strong { display: block; margin-bottom: 7px; font-size: 17px; line-height: 1.25; }
.mega-feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.mega-col h4 { margin-bottom: 8px; color: var(--muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.mega-col a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 13px; font-weight: 750; }
.mega-col a:hover { color: var(--brand); }
.mega-col a span { color: var(--muted); font-size: 11px; white-space: nowrap; }
.mega-note { display: flex; min-height: 132px; flex-direction: column; justify-content: flex-end; padding: 18px; color: #fff; background: var(--brand-dark); border-left: 4px solid var(--accent); }
.mega-note:hover { color: #fff; background: var(--brand); }
.mega-note small { margin-bottom: 8px; color: #bdd2cb; letter-spacing: .1em; text-transform: uppercase; }
.mega-note strong { font-size: 18px; line-height: 1.3; }
.header-cta { margin-left: 4px; white-space: nowrap; }
.menu-toggle { display: none; margin-left: auto; width: 46px; height: 42px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
.menu-toggle span, .menu-toggle::before, .menu-toggle::after { content: ""; display: block; width: 22px; height: 2px; margin: 5px auto; background: currentColor; }

.btn { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border: 1px solid var(--brand); border-radius: var(--radius); font-weight: 800; cursor: pointer; transition: background-color .18s ease, color .18s ease, border-color .18s ease; }
.btn-primary { color: #fff; background: var(--brand); }
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-accent { color: #fff; background: var(--accent); border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn-ghost { color: var(--brand); background: transparent; }
.btn-ghost:hover { color: #fff; background: var(--brand); }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: var(--brand); font-weight: 800; }
.text-link::after { content: "→"; color: var(--accent); }

.hero { position: relative; overflow: hidden; background: var(--brand-dark); color: #fff; }
.hero-grid { min-height: 650px; display: grid; grid-template-columns: minmax(0, .92fr) minmax(480px, 1.08fr); }
.hero-copy { padding: clamp(70px, 8vw, 116px) clamp(28px, 5vw, 76px) clamp(70px, 8vw, 110px) max(0px, calc((100vw - var(--max)) / 2)); display: flex; flex-direction: column; justify-content: center; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; color: #bcd7ce; font-size: 13px; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 34px; height: 3px; background: var(--accent); }
.hero h1 { max-width: 720px; font-size: clamp(42px, 4.2vw, 64px); }
.hero h1 em { color: #ffb27e; font-style: normal; }
.hero-lead { max-width: 660px; margin: 26px 0 34px; color: #d3e2dd; font-size: clamp(17px, 1.6vw, 21px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-actions .btn-ghost { color: #fff; border-color: rgba(255,255,255,.5); }
.hero-actions .btn-ghost:hover { background: #fff; color: var(--brand-dark); }
.hero-media { position: relative; min-height: 650px; background: #122f2b; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .5s ease; }
.hero-slide.is-active { opacity: 1; }
.hero-slide img { height: 100%; object-fit: cover; }
.hero-media::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: rgba(6, 35, 31, .12); }
.hero-caption { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 24px; display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 18px 20px; color: #fff; background: rgba(8, 63, 54, .93); border-left: 5px solid var(--accent); }
.hero-caption b { display: block; font-size: 18px; }
.hero-caption span { color: #c6dbd4; font-size: 13px; }
.carousel-dots { display: flex; gap: 8px; }
.carousel-dot { width: 34px; height: 5px; padding: 0; border: 0; background: rgba(255,255,255,.35); cursor: pointer; }
.carousel-dot.is-active { background: var(--accent); }

.trust-strip { color: #fff; background: var(--brand); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { min-height: 112px; padding: 22px 24px; border-right: 1px solid rgba(255,255,255,.22); }
.trust-item:first-child { border-left: 1px solid rgba(255,255,255,.22); }
.trust-item b { display: block; margin-bottom: 4px; font-size: 18px; }
.trust-item span { color: #cce0d9; font-size: 14px; }

.section { padding-block: var(--section); }
.section-white { background: var(--surface); }
.section-dark { color: #fff; background: var(--brand-dark); }
.section-head { display: grid; grid-template-columns: minmax(0, .85fr) minmax(300px, .55fr); gap: 60px; align-items: end; margin-bottom: 42px; padding-top: 18px; border-top: 2px solid var(--ink); }
.section-dark .section-head { border-color: rgba(255,255,255,.65); }
.section-kicker { margin-bottom: 10px; color: var(--brand); font-size: 13px; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.section-dark .section-kicker { color: #ffb27e; }
.section-head h2 { font-size: clamp(32px, 4vw, 54px); }
.section-head p { margin: 0; color: var(--muted); }
.section-dark .section-head p { color: #bdd2cb; }

.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.product-card { display: flex; min-width: 0; min-height: 100%; flex-direction: column; overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--brand); }
.product-card-media { position: relative; display: block; flex: 0 0 auto; aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface-2); }
.product-card-media img { height: 100%; object-fit: cover; transition: transform .25s ease; }
.product-card:hover .product-card-media img { transform: scale(1.025); }
.product-tag { position: absolute; left: 12px; top: 12px; padding: 5px 9px; color: #fff; background: var(--brand); font-size: 12px; font-weight: 800; }
.product-card-body { padding: 20px; }
.product-card h3 { margin-bottom: 10px; font-size: 21px; }
.product-card p { min-height: 76px; color: var(--muted); font-size: 14px; }
.spec-list { display: grid; grid-template-columns: 1fr 1fr; margin-top: 18px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.spec-list div { padding: 9px 10px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.spec-list dt { color: var(--muted); font-size: 11px; }
.spec-list dd { margin: 2px 0 0; font-weight: 800; font-size: 13px; }
.product-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding: 14px 20px; border-top: 1px solid var(--line); font-size: 13px; }
.product-card-foot a { color: var(--brand); font-weight: 900; }
.product-card-foot span { color: var(--muted); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter-btn { padding: 9px 14px; color: var(--ink-2); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); font-weight: 800; cursor: pointer; }
.filter-btn:hover, .filter-btn.is-active { color: #fff; background: var(--brand); border-color: var(--brand); }
.is-filtered-out { display: none !important; }
.cms-status { margin-bottom: 18px; padding: 12px 14px; color: var(--ink-2); background: var(--surface-2); border-left: 4px solid var(--brand); font-size: 14px; }
.cms-status[data-state="error"] { color: var(--danger); border-color: var(--danger); }
.cms-status[data-state="empty"] { color: var(--muted); }
.cms-status[hidden] { display: none; }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .82fr); gap: clamp(36px, 7vw, 100px); align-items: center; }
.split-media { position: relative; }
.split-media img { min-height: 440px; object-fit: cover; border: 1px solid var(--line); }
.split-note { position: absolute; right: -18px; bottom: -18px; max-width: 280px; padding: 20px; color: #fff; background: var(--brand); border-left: 5px solid var(--accent); }
.split-copy h2 { margin-bottom: 24px; font-size: clamp(34px, 4vw, 56px); }
.split-copy p { color: var(--muted); }
.feature-list { display: grid; gap: 0; margin: 28px 0; border-top: 1px solid var(--line); }
.feature-list li { display: grid; grid-template-columns: 32px 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.feature-list strong { color: var(--accent); }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.25); border-left: 1px solid rgba(255,255,255,.25); }
.service-card { min-height: 250px; padding: 28px; border-right: 1px solid rgba(255,255,255,.25); border-bottom: 1px solid rgba(255,255,255,.25); }
.service-num { display: block; margin-bottom: 46px; color: #ffb27e; font-weight: 900; }
.service-card h3 { margin-bottom: 12px; font-size: 24px; }
.service-card p { color: #bdd2cb; }

.process { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 2px solid var(--ink); }
.process-step { position: relative; padding: 24px 22px 12px 0; border-right: 1px solid var(--line); }
.process-step:last-child { border-right: 0; }
.process-step b { display: block; width: 38px; height: 38px; margin-bottom: 34px; color: #fff; background: var(--brand); text-align: center; line-height: 38px; }
.process-step h3 { margin-bottom: 10px; font-size: 18px; }
.process-step p { color: var(--muted); font-size: 14px; }

.page-hero { padding: clamp(72px, 9vw, 120px) 0; color: #fff; background: var(--brand-dark); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .5fr); gap: 70px; align-items: end; }
.page-hero h1 { font-size: clamp(42px, 6vw, 76px); }
.page-hero p { margin: 22px 0 0; color: #c6d9d3; font-size: 18px; }
.page-hero-aside { padding: 20px; border-left: 5px solid var(--accent); background: rgba(255,255,255,.08); }
.breadcrumb { margin-bottom: 18px; color: #a9c6bd; font-size: 13px; }
.breadcrumb a:hover { color: #fff; }

.detail-hero { padding: 50px 0 70px; background: var(--surface); }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(390px, .72fr); gap: clamp(32px, 6vw, 76px); }
.gallery-main { aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface-2); border: 1px solid var(--line); }
.gallery-main img { height: 100%; object-fit: cover; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 8px; }
.gallery-thumb { padding: 0; aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface); border: 2px solid transparent; cursor: pointer; }
.gallery-thumb.is-active { border-color: var(--accent); }
.gallery-thumb img { height: 100%; object-fit: cover; }
.detail-copy .product-tag { position: static; display: inline-flex; margin-bottom: 18px; }
.detail-copy h1 { font-size: clamp(38px, 4.8vw, 64px); }
.detail-copy > p { margin: 22px 0; color: var(--muted); font-size: 17px; }
.detail-points { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.detail-points div { padding: 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.detail-points span { display: block; color: var(--muted); font-size: 12px; }
.detail-points b { display: block; margin-top: 3px; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.data-table { width: 100%; border-collapse: collapse; background: var(--surface); }
.data-table th, .data-table td { padding: 15px 18px; text-align: left; border: 1px solid var(--line); vertical-align: top; }
.data-table th { width: 30%; color: var(--brand); background: var(--surface-2); }

.article-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.article-card { display: grid; grid-template-columns: 220px 1fr; min-height: 230px; background: var(--surface); border: 1px solid var(--line); }
.article-card img { height: 100%; object-fit: cover; }
.article-body { padding: 24px; }
.article-meta { color: var(--brand); font-size: 12px; font-weight: 900; letter-spacing: .1em; }
.article-card h3 { margin: 10px 0 12px; font-size: 23px; }
.article-card p { color: var(--muted); font-size: 14px; }

.contact-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(340px, .55fr); gap: clamp(32px, 7vw, 90px); }
.contact-panel { padding: 34px; background: var(--surface); border: 1px solid var(--line); border-top: 5px solid var(--brand); }
.contact-panel h2 { margin-bottom: 18px; font-size: 32px; }
.contact-panel p { color: var(--muted); }
.contact-list { margin-top: 26px; border-top: 1px solid var(--line); }
.contact-list li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-list span { display: block; color: var(--muted); font-size: 12px; }
.contact-list strong { display: block; margin-top: 3px; }
.notice { padding: 18px 20px; color: var(--ink-2); background: #fff7ed; border-left: 5px solid var(--accent); }
.checklist { display: grid; gap: 12px; margin-top: 24px; }
.checklist li { padding: 14px 16px 14px 46px; position: relative; background: var(--surface-2); }
.checklist li::before { content: "✓"; position: absolute; left: 16px; color: var(--success); font-weight: 900; }

.cta-band { padding: 54px 0; color: #fff; background: var(--brand); }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-band h2 { margin-bottom: 8px; font-size: clamp(28px, 3vw, 42px); }
.cta-band p { margin: 0; color: #cbe0d8; }
.cta-band .btn { flex: 0 0 auto; }

.footer { color: #c2d4ce; background: #062e28; }
.footer-main { display: grid; grid-template-columns: 1.25fr .7fr .7fr 1fr; gap: 50px; padding: 68px 0 54px; }
.footer .brand-name { color: #fff; }
.footer .brand-sub { color: #8fb0a6; }
.footer-about { margin-top: 20px; max-width: 440px; color: #9db8af; font-size: 14px; }
.footer h3 { margin-bottom: 18px; color: #fff; font-size: 15px; letter-spacing: .08em; }
.footer li { margin-bottom: 9px; }
.footer a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.15); color: #86a59c; font-size: 13px; }

@media (max-width: 1100px) {
  .header-cta { display: none; }
  .brand { min-width: 240px; }
  .nav > a, .nav-item > a { padding-inline: 10px; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-copy { padding-left: 30px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 2 / -1; }
}

@media (max-width: 880px) {
  .topline-list span:last-child { display: none; }
  .menu-toggle { display: block; }
  .header-inner { min-height: 70px; }
  .brand { min-width: 0; }
  .brand-mark { width: 46px; height: 46px; }
  .brand-name { font-size: 16px; }
  .nav { position: fixed; inset: 108px 0 auto 0; max-height: calc(100vh - 108px); overflow: auto; display: none; padding: 14px 20px 26px; background: var(--surface); border-bottom: 1px solid var(--line); }
  .nav.is-open { display: block; }
  .nav > a, .nav-item > a { width: 100%; min-height: 50px; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-item { display: block; }
  .nav-arrow { margin-left: auto; }
  .mega-menu { position: static; padding: 10px 0 16px; border: 0; box-shadow: none; opacity: 1; transform: none; pointer-events: auto; }
  .mega-menu::before, .mega-feature { display: none; }
  .mega-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .mega-note { min-height: 112px; }
  .hero-grid { min-height: auto; grid-template-columns: 1fr; }
  .hero-media { min-height: 520px; order: -1; }
  .hero-copy { padding: 64px 28px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head, .page-hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .split, .detail-grid, .contact-grid { grid-template-columns: 1fr; }
  .split-media { order: -1; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-col:last-child { grid-column: auto; }
}

@media (max-width: 580px) {
  .wrap { width: min(calc(100% - 28px), var(--max)); }
  .topline .wrap { min-height: 34px; }
  .topline-list { gap: 10px; }
  .topline-list span { display: none; }
  .brand-sub { display: none; }
  .nav { inset-block-start: 104px; max-height: calc(100vh - 104px); }
  .mega-grid { grid-template-columns: 1fr; }
  .hero-media { min-height: 330px; }
  .hero-caption { left: 12px; right: 12px; bottom: 12px; padding: 12px 14px; }
  .hero-caption span { display: none; }
  .hero-copy { padding: 54px 18px 60px; }
  .hero-actions .btn { width: 100%; }
  .trust-grid, .product-grid, .service-grid, .process, .footer-main { grid-template-columns: 1fr; }
  .trust-item, .trust-item:first-child { border-left: 1px solid rgba(255,255,255,.22); }
  .section-head { gap: 16px; }
  .split-media img { min-height: 300px; }
  .split-note { position: static; max-width: none; }
  .service-card { min-height: auto; }
  .service-num { margin-bottom: 24px; }
  .detail-points { grid-template-columns: 1fr; }
  .gallery-thumbs { grid-template-columns: repeat(2, 1fr); }
  .article-card { grid-template-columns: 1fr; }
  .article-card img { height: 220px; }
  .cta-band .wrap, .footer-bottom { align-items: stretch; flex-direction: column; }
  .cta-band .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}