:root {
  --navy: #0b2d4d;
  --blue: #123d66;
  --green: #159267;
  --gold: #c49a3c;
  --text: #0f2740;
  --muted: #66758a;
  --line: #dce4ee;
  --soft: #f4f7fb;
  --white: #ffffff;
  --shadow: 0 16px 40px rgba(10, 33, 56, .12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #fff;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.topbar {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--navy);
  color: #fff;
  font-weight: 800;
}
.brand strong { display: block; font-size: 17px; }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.main-nav ul { display: flex; gap: 20px; margin: 0; padding: 0; list-style: none; }
.main-nav a { color: #43546a; font-weight: 600; }
.menu-toggle { display: none; border: 0; background: var(--navy); color: #fff; border-radius: 10px; padding: 9px 12px; }

.hero, .page-hero {
  background: linear-gradient(135deg, #0b2d4d 0%, #123d66 58%, #0f6c62 100%);
  color: #fff;
}
.hero { padding: 58px 0; }
.page-hero { padding: 48px 0; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 34px;
  align-items: center;
}
.eyebrow { margin: 0 0 10px; color: var(--gold); font-weight: 800; letter-spacing: 0; }
.hero h1, .page-hero h1 { margin: 0; font-size: clamp(36px, 6vw, 68px); line-height: 1.04; letter-spacing: 0; }
.hero p, .page-hero p { max-width: 720px; color: rgba(255,255,255,.84); font-size: 18px; }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn, .floating-contact a, .floating-contact button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  font-weight: 800;
  cursor: pointer;
}
.btn.primary, .floating-contact a, .floating-contact button { background: var(--green); color: #fff; }
.btn.ghost { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.hero-board { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.18); border-radius: 18px; padding: 14px; box-shadow: var(--shadow); }
.mock { border-radius: 14px; background: linear-gradient(135deg, #f8fafc, #cdd8e5 45%, #123d66); }
.mock-large { height: 260px; }
.mock-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.mock-small { height: 96px; }
.mock-small.alt { background: linear-gradient(135deg, #eaf7ef, #159267); }

.section { padding: 44px 0; }
.compact-section { padding-bottom: 28px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-head h2 { margin: 0; font-size: clamp(26px, 4vw, 42px); line-height: 1.12; }
.category-grid, .case-grid, .product-grid {
  display: grid;
  gap: 16px;
}
.quick-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.quick-card {
  display: grid;
  gap: 8px;
  min-height: 112px;
  padding: 18px;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #123d66, #159267);
  box-shadow: var(--shadow);
}
.quick-card strong { font-size: 20px; }
.quick-card span { color: rgba(255,255,255,.82); }
.category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.category-grid.small { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.case-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.category-card, .case-card, .product-card, .faq-item, .cta-panel, .info-list {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.category-card { padding: 14px; min-height: 132px; display: grid; gap: 8px; }
.category-card strong { font-size: 18px; }
.category-card small { color: var(--muted); }
.mini-visual { width: 100%; height: 42px; border-radius: 12px; background: linear-gradient(135deg, #e6edf5, #b6c7db); }
.tone-green .mini-visual { background: linear-gradient(135deg, #d9f8ec, #159267); }
.tone-gold .mini-visual { background: linear-gradient(135deg, #fff1c8, #c49a3c); }
.tone-cyan .mini-visual { background: linear-gradient(135deg, #d8f3ff, #2687a7); }
.tone-teal .mini-visual { background: linear-gradient(135deg, #dff9f4, #0f6c62); }
.tone-slate .mini-visual { background: linear-gradient(135deg, #e8edf5, #536173); }

.visual { min-height: 150px; background: linear-gradient(135deg, #edf3f8, #b9c8d9); }
.visual-1 { background: linear-gradient(135deg, #dfe9f6, #123d66); }
.visual-2 { background: linear-gradient(135deg, #e7fbf2, #159267); }
.visual-3 { background: linear-gradient(135deg, #fff1c8, #c49a3c); }
.visual-4 { background: linear-gradient(135deg, #e4f4ff, #2687a7); }
.visual-5 { background: linear-gradient(135deg, #f4e8ff, #725aa8); }
.visual-6 { background: linear-gradient(135deg, #eef2f7, #536173); }
.card-body { padding: 14px; display: grid; gap: 8px; }
.card-body h3 { margin: 0; font-size: 18px; }
.card-body p, .card-body small { margin: 0; color: var(--muted); }
.card-body a { color: var(--green); font-weight: 800; }
.terms-line { color: var(--green); font-weight: 800; min-height: 1em; }
.badge { width: fit-content; color: var(--green); background: #e6f7ef; border-radius: 999px; padding: 3px 9px; font-size: 12px; font-weight: 800; }

.detail-layout { padding: 36px 0; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 440px); gap: 24px; }
.detail-image { border-radius: 18px; overflow: hidden; min-height: 360px; box-shadow: var(--shadow); }
.detail-copy h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.08; margin: 0 0 14px; }
.back-link { display: inline-flex; margin-bottom: 18px; color: var(--green); font-weight: 800; }
.spec-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.spec-tags span { background: var(--soft); border-radius: 999px; padding: 8px 12px; font-weight: 700; }
.gallery-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.gallery-thumb { border: 0; min-height: 84px; border-radius: 12px; cursor: pointer; }
.lightbox { position: fixed; inset: 0; z-index: 50; background: rgba(5,18,31,.82); display: grid; place-items: center; padding: 24px; }
.lightbox[hidden] { display: none; }
.lightbox-visual { width: min(760px, 92vw); height: min(520px, 70vh); border-radius: 18px; }
.lightbox-close { position: fixed; top: 20px; right: 20px; border: 0; border-radius: 999px; padding: 10px 14px; font-weight: 800; }

.faq-list { display: grid; gap: 14px; }
.faq-item, .cta-panel, .info-list { padding: 22px; }
.info-list ul { margin: 0; padding-left: 20px; }
.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: flex;
  gap: 8px;
}
.site-footer { background: #071c30; color: #dbe6f1; padding: 32px 0; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

@media (max-width: 760px) {
  .wrap, .topbar { width: min(100% - 22px, 480px); }
  .topbar { min-height: 62px; }
  .brand small { display: none; }
  .menu-toggle { display: inline-flex; }
  .main-nav { display: none; position: absolute; top: 62px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 12px 18px; }
  .main-nav.is-open { display: block; }
  .main-nav ul { display: grid; gap: 12px; }
  .hero { padding: 34px 0 26px; }
  .hero-grid, .detail-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero h1, .page-hero h1 { font-size: 42px; }
  .hero p, .page-hero p { font-size: 15px; }
  .hero-board { order: -1; }
  .mock-large { height: 160px; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .quick-links { grid-template-columns: 1fr; gap: 10px; }
  .quick-card { min-height: 92px; padding: 14px; }
  .category-grid.small { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .section { padding: 28px 0; }
  .section-head { display: block; margin-bottom: 14px; }
  .visual { min-height: 118px; }
  .card-body { padding: 12px; }
  .card-body h3 { font-size: 15px; }
  .card-body p, .card-body small { font-size: 12px; }
  .detail-image { min-height: 260px; }
  .floating-contact { left: 12px; right: 12px; bottom: 12px; }
  .floating-contact a, .floating-contact button { flex: 1; padding: 11px 8px; }
  body { padding-bottom: 72px; }
}