:root {
  --navy: #071f33;
  --blue: #0b2e4a;
  --blue-2: #123b59;
  --orange: #f28c28;
  --orange-dark: #d87516;
  --ink: #172431;
  --muted: #64748b;
  --soft: #f4f7fa;
  --line: #e4eaf0;
  --white: #fff;
  --shadow: 0 22px 60px rgba(7, 31, 51, .14);
  --radius: 10px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, Helvetica, "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}
body.is-locked { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 300;
  padding: 10px 16px;
  color: var(--white);
  background: var(--orange);
  border-radius: 6px;
}
.skip-link:focus { top: 16px; }
.reading-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 220;
  width: 0;
  height: 4px;
  background: var(--orange);
  box-shadow: 0 0 12px rgba(242, 140, 40, .5);
}

.topbar { background: var(--navy); color: rgba(255,255,255,.82); font-size: 13px; }
.topbar .container { min-height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.topbar-group { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.topbar a:hover { color: var(--white); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.navbar { min-height: 78px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; color: var(--blue); font-weight: 800; }
.brand img { width: 54px; height: 54px; object-fit: contain; }
.brand span { line-height: 1.12; }
.brand small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 4px; margin: 0 0 0 auto; padding: 0; list-style: none; }
.nav-links a { display: block; padding: 26px 11px; color: var(--ink); font-size: 14px; font-weight: 700; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--orange-dark); }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  color: var(--blue);
}
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: currentColor; }

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 21px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 800;
  line-height: 1.2;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary { background: var(--orange); color: var(--white); }
.btn.primary:hover { background: var(--orange-dark); }
.btn.outline { border-color: rgba(255,255,255,.5); color: var(--white); background: transparent; }
.btn.light { color: var(--blue); background: var(--white); }
.btn.compact { min-height: 44px; padding: 10px 18px; }
.button-row { display: flex; flex-wrap: wrap; gap: 13px; align-items: center; }

.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 84% 24%, rgba(242,140,40,.16), transparent 26%),
    linear-gradient(125deg, var(--navy), var(--blue) 60%, #124768);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .16;
  background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, #000, transparent 80%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(420px, .92fr);
  align-items: center;
  gap: clamp(42px, 6vw, 84px);
  min-height: 690px;
  padding: 86px 0 100px;
}
.eyebrow { display: block; color: var(--orange); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin: 14px 0 22px; font-size: clamp(42px, 5.6vw, 72px); line-height: .98; letter-spacing: -.035em; }
h2 { margin-bottom: 18px; color: var(--blue); font-size: clamp(30px, 4vw, 46px); line-height: 1.1; letter-spacing: -.025em; }
h3 { margin-bottom: 9px; font-size: 20px; line-height: 1.25; }
p { color: var(--muted); }
.hero-lead { max-width: 700px; margin-bottom: 30px; color: rgba(255,255,255,.8); font-size: 18px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 9px; margin: 28px 0 0; padding: 0; list-style: none; }
.hero-points li { padding: 7px 11px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.82); background: rgba(255,255,255,.06); font-size: 13px; font-weight: 700; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 24px -22px -22px 24px; border: 1px solid rgba(255,255,255,.18); border-radius: 12px; }
.hero-cover { position: relative; overflow: hidden; border: 8px solid rgba(255,255,255,.96); border-radius: 9px; box-shadow: 0 35px 80px rgba(0,0,0,.34); background: var(--white); transform: rotate(1.2deg); }
.hero-cover img { width: 100%; aspect-ratio: 1.976 / 1; object-fit: cover; }
.cover-badge { position: absolute; right: 16px; bottom: 16px; padding: 9px 12px; border-radius: 5px; color: var(--white); background: rgba(7,31,51,.88); font-size: 12px; font-weight: 800; backdrop-filter: blur(8px); }

.trust-strip { border-bottom: 1px solid var(--line); background: var(--white); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { min-height: 112px; padding: 24px; border-right: 1px solid var(--line); display: flex; align-items: center; gap: 14px; }
.trust-item:first-child { border-left: 1px solid var(--line); }
.trust-number { color: var(--orange); font-size: 29px; font-weight: 900; line-height: 1; }
.trust-item span:last-child { color: var(--blue); font-size: 14px; font-weight: 800; line-height: 1.25; }

.section { padding: 90px 0; }
.section.soft { background: var(--soft); }
.section.dark { color: var(--white); background: var(--blue); }
.section.dark h2, .section.dark p { color: var(--white); }
.section-heading { max-width: 800px; margin-bottom: 38px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section-heading p { font-size: 17px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.feature-card { min-height: 230px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 10px 28px rgba(7,31,51,.06); }
.feature-index { display: inline-grid; width: 42px; height: 42px; margin-bottom: 32px; place-items: center; border-radius: 7px; color: var(--white); background: var(--blue); font-size: 13px; font-weight: 900; }
.feature-card p { margin-bottom: 0; font-size: 14px; }

.landing-content { padding: 92px 0 112px; background: var(--soft); }
.landing-intro { max-width: 860px; }
.pill-nav {
  position: sticky;
  top: 79px;
  z-index: 42;
  display: flex;
  gap: 8px;
  margin: 0 0 34px;
  padding: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 10px 32px rgba(7,31,51,.08);
  backdrop-filter: blur(12px);
  scrollbar-width: thin;
}
.pill-nav a { flex: 0 0 auto; padding: 9px 13px; border-radius: 5px; color: var(--blue); background: #eef3f7; font-size: 13px; font-weight: 800; }
.pill-nav a:hover { color: var(--white); background: var(--orange); }
.story-list { display: grid; gap: 34px; }
.story-section {
  scroll-margin-top: 155px;
  padding: clamp(28px, 4vw, 52px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 14px 38px rgba(7,31,51,.08);
}
.story-section:nth-child(even) { border-top: 4px solid var(--orange); }
.story-heading { display: grid; grid-template-columns: 66px minmax(0, 1fr); gap: 24px; align-items: start; max-width: 980px; margin-bottom: 30px; }
.section-number { display: grid; width: 62px; height: 62px; place-items: center; border-radius: 9px; color: var(--white); background: var(--blue); font-size: 20px; font-weight: 900; }
.story-heading h2 { margin: 8px 0 12px; }
.story-heading p { margin: 0; font-size: 17px; }
.story-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 0 0 34px; }
.photo-card { position: relative; min-width: 0; margin: 0; overflow: hidden; border-radius: 8px; background: var(--blue); box-shadow: 0 8px 24px rgba(7,31,51,.12); }
.photo-card img { width: 100%; height: 260px; object-fit: cover; cursor: zoom-in; transition: transform .35s ease; }
.photo-card:hover img { transform: scale(1.035); }
.photo-card figcaption { position: absolute; inset: auto 0 0; padding: 28px 14px 10px; color: var(--white); background: linear-gradient(transparent, rgba(7,31,51,.86)); font-size: 12px; font-weight: 800; }
.rich-copy {
  padding-top: 30px;
  border-top: 1px solid var(--line);
  column-count: 2;
  column-gap: 46px;
  column-rule: 1px solid var(--line);
}
.rich-copy h3, .rich-copy p, .rich-copy ul { break-inside: avoid; }
.rich-copy h3 { margin: 4px 0 12px; padding-left: 12px; border-left: 3px solid var(--orange); color: var(--blue); font-size: 18px; line-height: 1.4; }
.rich-copy p { margin: 0 0 15px; color: #405163; font-size: 15px; line-height: 1.85; }
.rich-copy ul { margin: 0 0 20px; padding-left: 22px; color: #405163; }
.rich-copy li { margin-bottom: 9px; line-height: 1.75; }

.content-library { padding: 90px 0 110px; background: #e9eef3; }
.content-intro { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
.content-intro .section-heading { margin: 0; }
.content-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); align-items: start; gap: 26px; }
.content-index {
  position: sticky;
  top: 104px;
  padding: 24px;
  border-radius: 9px;
  color: var(--white);
  background: var(--blue);
  box-shadow: var(--shadow);
}
.content-index h3 { margin-top: 12px; font-size: 24px; }
.content-index p { color: rgba(255,255,255,.72); font-size: 14px; }
.content-index .btn { width: 100%; }
.content-pages { display: grid; gap: 24px; min-width: 0; }
.content-chapter {
  scroll-margin-top: 104px;
  overflow: hidden;
  border: 1px solid #d8e0e8;
  border-radius: 9px;
  background: var(--white);
  box-shadow: 0 12px 32px rgba(7,31,51,.09);
}
.chapter-heading { display: flex; align-items: baseline; gap: 18px; padding: 22px 26px; border-bottom: 1px solid var(--line); background: linear-gradient(90deg, #fff, #f8fafc); }
.chapter-heading span { flex: 0 0 auto; color: var(--orange-dark); font-size: 12px; font-weight: 900; letter-spacing: .06em; }
.chapter-heading h3 { margin: 0; color: var(--blue); font-size: clamp(20px, 2.2vw, 28px); }
.chapter-body { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); align-items: start; gap: 0; }
.chapter-copy { padding: 28px 30px 34px; min-width: 0; }
.chapter-copy p { margin-bottom: 13px; color: #405163; font-size: 15px; line-height: 1.85; overflow-wrap: anywhere; }
.chapter-copy h4 { margin: 25px 0 11px; padding-left: 12px; border-left: 3px solid var(--orange); color: var(--blue); font-size: 17px; line-height: 1.4; }
.chapter-copy h4:first-child { margin-top: 0; }
.chapter-copy ul { margin: 10px 0 18px; padding-left: 22px; color: #405163; }
.chapter-copy li { margin-bottom: 9px; line-height: 1.8; }
.chapter-visual { margin: 0; align-self: stretch; border-left: 1px solid var(--line); background: #eef3f7; }
.chapter-visual img { width: 100%; height: 100%; min-height: 320px; max-height: 520px; object-fit: cover; object-position: center; cursor: zoom-in; }
.chapter-visual figcaption { padding: 10px 13px; color: var(--muted); background: var(--white); font-size: 12px; text-align: center; }
.content-chapter.visual-heavy .chapter-body { grid-template-columns: minmax(230px, .45fr) minmax(0, 1.55fr); }
.content-chapter.visual-heavy .chapter-visual img { min-height: 440px; object-fit: contain; }
.content-chapter.visual-heavy .chapter-copy { display: flex; flex-direction: column; justify-content: center; }

.brochure-section { padding: 90px 0 110px; background: #e9eef3; }
.brochure-intro { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
.brochure-intro .section-heading { margin: 0; }
.page-tools { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: flex-end; }
.page-tools label { color: var(--blue); font-size: 13px; font-weight: 800; }
.page-tools select { min-height: 44px; padding: 8px 38px 8px 12px; border: 1px solid #cdd7e1; border-radius: 6px; color: var(--blue); background: var(--white); }
.brochure-layout { display: grid; grid-template-columns: minmax(0, 1fr) 250px; align-items: start; gap: 26px; }
.brochure-pages { display: grid; gap: 24px; }
.brochure-page { position: relative; margin: 0; overflow: hidden; border: 1px solid #d8e0e8; border-radius: 8px; background: var(--white); box-shadow: 0 12px 32px rgba(7,31,51,.1); }
.brochure-page img { width: 100%; aspect-ratio: 1.976 / 1; object-fit: cover; cursor: zoom-in; background: #f8fafc; }
.brochure-page figcaption { display: flex; align-items: center; justify-content: space-between; min-height: 42px; padding: 8px 14px; border-top: 1px solid var(--line); color: var(--muted); background: var(--white); font-size: 12px; }
.brochure-page figcaption b { color: var(--blue); }
.brochure-sidebar { position: sticky; top: 104px; padding: 24px; border-radius: 9px; color: var(--white); background: var(--blue); box-shadow: var(--shadow); }
.brochure-sidebar h3 { margin-top: 12px; font-size: 24px; }
.brochure-sidebar p { color: rgba(255,255,255,.72); font-size: 14px; }
.current-page { margin: 22px 0; padding: 14px 0; border-block: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.78); font-size: 13px; }
.current-page strong { display: block; color: var(--orange); font-size: 32px; line-height: 1.05; }
.brochure-sidebar .btn { width: 100%; margin-top: 10px; }
.zoom-hint { display: flex; gap: 8px; align-items: center; margin-top: 18px; color: rgba(255,255,255,.62); font-size: 12px; }

.cta-section { position: relative; overflow: hidden; padding: 90px 0; color: var(--white); background: linear-gradient(120deg, var(--navy), var(--blue-2)); }
.cta-section::after { content: ""; position: absolute; width: 420px; height: 420px; right: -140px; top: -190px; border: 80px solid rgba(242,140,40,.13); border-radius: 50%; }
.cta-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 50px; }
.cta-section h2 { color: var(--white); }
.cta-section p { max-width: 760px; color: rgba(255,255,255,.75); }

.site-footer { padding: 54px 0 30px; color: rgba(255,255,255,.72); background: #061a2b; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 42px; }
.site-footer .brand { color: var(--white); }
.site-footer .brand small, .site-footer p { color: rgba(255,255,255,.6); }
.site-footer h3 { color: var(--white); font-size: 16px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a:hover { color: var(--orange); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); font-size: 12px; }

.mobile-cta { display: none; }
.lightbox { width: min(96vw, 1600px); max-width: none; padding: 0; border: 0; border-radius: 9px; background: #101820; box-shadow: 0 32px 100px rgba(0,0,0,.55); }
.lightbox::backdrop { background: rgba(0, 10, 20, .88); backdrop-filter: blur(5px); }
.lightbox img { width: 100%; max-height: 90vh; object-fit: contain; }
.lightbox-close { position: absolute; right: 12px; top: 12px; z-index: 2; width: 44px; height: 44px; border: 0; border-radius: 50%; color: var(--white); background: rgba(7,31,51,.82); font-size: 25px; cursor: pointer; }

@media (max-width: 1050px) {
  .nav-links { display: none; position: absolute; left: 20px; right: 20px; top: 78px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); box-shadow: var(--shadow); }
  .nav-links.open { display: block; }
  .nav-links a { padding: 12px; }
  .menu-toggle { display: block; }
  .nav-quote { display: none; }
  .hero-grid { grid-template-columns: 1fr; padding: 75px 0 90px; }
  .hero-copy { max-width: 840px; }
  .hero-visual { width: min(720px, 92%); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .pill-nav { top: 71px; }
  .rich-copy { column-count: 1; column-rule: 0; }
  .content-layout { grid-template-columns: 1fr; }
  .content-index { position: static; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px 28px; }
  .content-index h3, .content-index p { grid-column: 1; }
  .content-index .current-page { grid-column: 2; grid-row: 1 / 3; margin: 0; padding: 0 0 0 22px; border: 0; border-left: 1px solid rgba(255,255,255,.16); }
  .content-index .btn { display: none; }
  .brochure-layout { grid-template-columns: 1fr; }
  .brochure-sidebar { position: static; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px 28px; }
  .brochure-sidebar h3, .brochure-sidebar p { grid-column: 1; }
  .brochure-sidebar .current-page { grid-column: 2; grid-row: 1 / 3; margin: 0; padding: 0 0 0 22px; border: 0; border-left: 1px solid rgba(255,255,255,.16); }
  .brochure-sidebar .btn, .zoom-hint { display: none; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 28px, var(--container)); }
  .topbar .container { min-height: 38px; }
  .topbar-group:first-child span:last-child, .topbar-group:last-child { display: none; }
  .navbar { min-height: 70px; }
  .brand img { width: 46px; height: 46px; }
  .brand span { font-size: 14px; }
  .nav-links { top: 70px; }
  .hero-grid { min-height: auto; gap: 46px; padding: 64px 0 76px; }
  h1 { font-size: clamp(39px, 12vw, 56px); }
  .hero-lead { font-size: 16px; }
  .hero-visual { width: calc(100% - 8px); }
  .hero-visual::before { inset: 14px -12px -12px 14px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item { min-height: 96px; padding: 18px; border-bottom: 1px solid var(--line); }
  .section, .brochure-section, .content-library, .landing-content, .cta-section { padding: 68px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .feature-index { margin-bottom: 22px; }
  .pill-nav { top: 70px; margin-inline: -14px; border-radius: 0; }
  .story-list { gap: 20px; }
  .story-section { padding: 24px 20px; border-radius: 9px; }
  .story-heading { grid-template-columns: 48px minmax(0, 1fr); gap: 14px; }
  .section-number { width: 46px; height: 46px; font-size: 15px; }
  .story-heading p { font-size: 15px; }
  .story-gallery { grid-template-columns: 1fr; }
  .photo-card img { height: 230px; }
  .rich-copy { padding-top: 24px; }
  .content-intro { align-items: stretch; flex-direction: column; }
  .content-index { grid-template-columns: 1fr auto; padding: 20px; }
  .content-index p { display: none; }
  .content-index .current-page { grid-row: 1 / 2; }
  .content-pages { gap: 16px; }
  .chapter-heading { display: block; padding: 18px 20px; }
  .chapter-heading h3 { margin-top: 5px; }
  .chapter-body, .content-chapter.visual-heavy .chapter-body { grid-template-columns: 1fr; }
  .chapter-copy { padding: 22px 20px 26px; }
  .chapter-visual { border-top: 1px solid var(--line); border-left: 0; }
  .chapter-visual img, .content-chapter.visual-heavy .chapter-visual img { min-height: 0; max-height: none; height: auto; object-fit: contain; }
  .brochure-intro { align-items: stretch; flex-direction: column; }
  .page-tools { justify-content: flex-start; }
  .brochure-pages { gap: 16px; }
  .brochure-page figcaption { min-height: 38px; }
  .brochure-sidebar { grid-template-columns: 1fr auto; padding: 20px; }
  .brochure-sidebar p { display: none; }
  .brochure-sidebar .current-page { grid-row: 1 / 2; }
  .cta-grid, .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .mobile-cta { position: fixed; z-index: 150; left: 12px; right: 12px; bottom: 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px; border: 1px solid rgba(255,255,255,.16); border-radius: 10px; background: rgba(7,31,51,.94); box-shadow: 0 12px 36px rgba(0,0,0,.28); backdrop-filter: blur(12px); }
  .mobile-cta .btn { min-height: 44px; padding: 10px; font-size: 13px; }
  .site-footer { padding-bottom: 100px; }
}

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