:root {
  --navy: #0d2a4a;
  --navy-deep: #081c33;
  --gold: #c9a45c;
  --gold-soft: #f3ead6;
  --text: #1f2a37;
  --muted: #5f6b7a;
  --line: #e5e9ef;
  --bg-soft: #f6f8fb;
  --radius: 14px;
  --shadow: 0 12px 32px rgba(13, 42, 74, 0.08);
  --header-h: 72px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, svg { display: block; }

.container { width: min(1200px, 100% - 48px); margin: 0 auto; }

.eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 12px;
}

h1, h2, h3 { color: var(--navy); line-height: 1.3; }
h2 { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 16px; }
h3 { font-size: 20px; margin-bottom: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
}
.btn-primary { background: var(--gold); color: var(--navy-deep); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(201, 164, 92, .35); }
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-block { width: 100%; }

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--header-h);
  z-index: 50;
  transition: background .3s, box-shadow .3s;
}
.header.scrolled { background: rgba(255,255,255,.96); box-shadow: 0 2px 16px rgba(0,0,0,.06); backdrop-filter: blur(8px); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.logo { display: flex; align-items: center; gap: 10px; color: #fff; }
.header.scrolled .logo { color: var(--navy); }
.logo-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--gold);
  color: var(--navy-deep);
  font-weight: 800;
  font-size: 22px;
  font-family: Georgia, serif;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text strong { font-size: 18px; letter-spacing: 2px; }
.logo-text small { font-size: 10px; letter-spacing: 2px; opacity: .7; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav a { color: rgba(255,255,255,.88); font-size: 15px; position: relative; transition: color .2s; }
.nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 2px; background: var(--gold); transition: width .25s;
}
.nav a:not(.nav-cta):hover::after, .nav a.active::after { width: 100%; }
.header.scrolled .nav a { color: var(--text); }
.nav-cta {
  padding: 8px 20px; border-radius: 999px;
  background: var(--gold); color: var(--navy-deep) !important; font-weight: 600;
}

.menu-toggle { display: none; background: none; border: 0; cursor: pointer; width: 32px; height: 32px; position: relative; }
.menu-toggle span { position: absolute; left: 4px; right: 4px; height: 2px; background: #fff; transition: .3s; }
.header.scrolled .menu-toggle span { background: var(--navy); }
.menu-toggle span:nth-child(1) { top: 9px; }
.menu-toggle span:nth-child(2) { top: 15px; }
.menu-toggle span:nth-child(3) { top: 21px; }
.menu-toggle.open span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { top: 15px; transform: rotate(-45deg); }

/* Hero */
.hero { position: relative; color: #fff; padding: calc(var(--header-h) + 80px) 0 0; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(circle at 85% 20%, rgba(201,164,92,.25), transparent 40%),
    radial-gradient(circle at 10% 90%, rgba(80,130,200,.25), transparent 45%),
    linear-gradient(135deg, var(--navy-deep), var(--navy) 60%, #16406b);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-inner { display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: center; }
.hero h1 { color: #fff; font-size: clamp(36px, 5vw, 60px); margin-bottom: 24px; }
.highlight { color: var(--gold); }
.hero-sub { font-size: 18px; color: rgba(255,255,255,.78); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: blur(10px);
}
.hero-card-title { font-size: 18px; font-weight: 600; margin-bottom: 24px; }
.meter-list li { display: grid; grid-template-columns: 90px 1fr; align-items: center; gap: 16px; margin-bottom: 18px; font-size: 14px; color: rgba(255,255,255,.85); }
.meter { height: 8px; border-radius: 99px; background: rgba(255,255,255,.12); overflow: hidden; }
.meter i { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, #e6c98d, var(--gold)); transition: width 1.4s ease; }
.hero-card.in .meter i { width: var(--v); }
.hero-card-note { font-size: 13px; color: rgba(255,255,255,.6); margin-top: 8px; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 80px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.stat { padding: 36px 0; text-align: center; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,.12); }
.stat strong { font-size: 44px; color: var(--gold); font-family: Georgia, serif; }
.stat span { font-size: 20px; color: var(--gold); margin-left: 2px; }
.stat p { color: rgba(255,255,255,.7); font-size: 15px; }

/* Sections */
.section { padding: 110px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head p:not(.eyebrow) { color: var(--muted); }

/* About */
.about-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: center; }
.about-visual { position: relative; height: 420px; }
.about-block { position: absolute; border-radius: 20px; display: flex; flex-direction: column; justify-content: flex-end; padding: 32px; box-shadow: var(--shadow); }
.about-block strong { font-size: 96px; line-height: 1; font-family: "STSong", "SimSun", serif; }
.about-block span { letter-spacing: 4px; margin-top: 8px; }
.about-block-main { inset: 0 22% 18% 0; background: linear-gradient(150deg, var(--navy), #1b4b7a); color: #fff; }
.about-block-main strong { color: var(--gold); }
.about-block-sub { inset: 46% 0 0 46%; background: var(--gold-soft); color: var(--navy); border: 6px solid #fff; }
.about-text p:not(.eyebrow) { color: var(--muted); margin-bottom: 16px; }
.values { display: grid; gap: 14px; margin-top: 28px; }
.values li { padding: 16px 20px; border-left: 3px solid var(--gold); background: var(--bg-soft); border-radius: 0 10px 10px 0; color: var(--muted); }
.values b { color: var(--navy); margin-right: 12px; }

/* Services */
.services { background: var(--bg-soft); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: #fff; border-radius: var(--radius); padding: 36px 32px;
  border: 1px solid var(--line);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.service-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--gold-soft); display: grid; place-items: center; margin-bottom: 22px; }
.service-icon svg { width: 28px; height: 28px; fill: none; stroke: var(--navy); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.service-card ul { border-top: 1px dashed var(--line); padding-top: 16px; display: grid; gap: 6px; }
.service-card li { font-size: 14px; color: var(--text); padding-left: 16px; position: relative; }
.service-card li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }

/* Cases */
.case-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.case-tab {
  padding: 8px 22px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--muted); font-size: 15px; cursor: pointer; transition: .2s;
}
.case-tab:hover { border-color: var(--navy); color: var(--navy); }
.case-tab.active { background: var(--navy); border-color: var(--navy); color: #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  border-radius: var(--radius); padding: 32px; border: 1px solid var(--line);
  display: flex; flex-direction: column; transition: transform .3s, box-shadow .3s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card.hidden { display: none; }
.case-tag { align-self: flex-start; font-size: 12px; color: var(--gold); background: var(--gold-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
.case-card h3 { font-size: 18px; }
.case-card p { color: var(--muted); font-size: 15px; flex: 1; }
.case-result { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; align-items: baseline; gap: 12px; }
.case-result strong { font-size: 32px; color: var(--navy); font-family: Georgia, serif; }
.case-result span { color: var(--muted); font-size: 14px; }

/* Process */
.process { background: linear-gradient(135deg, var(--navy-deep), var(--navy)); }
.process h2 { color: #fff; }
.process-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.process-list li {
  position: relative; padding: 36px 28px; border-radius: var(--radius);
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.72);
}
.process-list li:not(:last-child)::after {
  content: "→"; position: absolute; right: -20px; top: 50%; transform: translateY(-50%);
  color: var(--gold); font-size: 20px;
}
.step { font-size: 40px; font-family: Georgia, serif; color: var(--gold); display: block; margin-bottom: 12px; }
.process-list h3 { color: #fff; }
.process-list p { font-size: 15px; }

/* Insights */
.insight-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.insight-card { padding: 32px; border-radius: var(--radius); background: var(--bg-soft); transition: background .3s, box-shadow .3s; }
.insight-card:hover { background: #fff; box-shadow: var(--shadow); }
.insight-card time { font-size: 13px; color: var(--gold); }
.insight-card h3 { font-size: 18px; margin: 10px 0; }
.insight-card p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.insight-card a { color: var(--navy); font-weight: 600; font-size: 14px; }

/* Contact */
.contact { background: var(--bg-soft); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact-info > p:not(.eyebrow) { color: var(--muted); margin-bottom: 32px; }
.contact-list { display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.contact-list span { color: var(--gold); font-weight: 600; width: 40px; flex-shrink: 0; }

.contact-form { background: #fff; padding: 40px; border-radius: 20px; box-shadow: var(--shadow); display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 8px; font-size: 14px; color: var(--text); font-weight: 600; }
.contact-form em { color: #d14343; font-style: normal; margin-left: 2px; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; font-weight: 400; color: var(--text); background: #fff; transition: border-color .2s, box-shadow .2s;
}
.contact-form textarea { resize: vertical; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,164,92,.18);
}
.contact-form .invalid { border-color: #d14343; }
.form-tip { min-height: 22px; font-size: 14px; text-align: center; }
.form-tip.ok { color: #1f8a4c; }
.form-tip.err { color: #d14343; }

/* Footer */
.footer { background: var(--navy-deep); color: rgba(255,255,255,.6); padding-top: 64px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand p { margin-top: 18px; font-size: 14px; }
.logo-light { color: #fff; }
.footer-links { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer-links h4 { color: #fff; font-size: 16px; margin-bottom: 6px; }
.footer-links a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 24px 0; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }

.back-top {
  position: fixed; right: 28px; bottom: 28px; width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center; background: var(--gold); color: var(--navy-deep);
  font-size: 20px; font-weight: 700; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transform: translateY(12px); transition: .3s; z-index: 40;
}
.back-top.show { opacity: 1; pointer-events: auto; transform: none; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .meter i { transition: none; }
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner, .about-inner, .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .service-grid, .case-grid, .insight-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .process-list li::after { display: none; }
  .about-visual { height: 340px; max-width: 520px; }
}

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; padding: 8px 24px 24px; box-shadow: 0 12px 24px rgba(0,0,0,.08);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .25s;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { color: var(--text); padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav a::after { display: none; }
  .nav-cta { text-align: center; margin-top: 16px; border-bottom: 0 !important; }
  .header:has(.nav.open) { background: #fff; }
  .header:has(.nav.open) .logo { color: var(--navy); }
  .header:has(.nav.open) .menu-toggle span { background: var(--navy); }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .hero { padding-top: calc(var(--header-h) + 48px); }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 56px; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.12); }
  .stat strong { font-size: 34px; }
  .service-grid, .case-grid, .insight-grid, .process-list, .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .contact-form { padding: 28px 22px; }
  .about-block strong { font-size: 72px; }
}