:root {
  --primary: #0f4c5c;
  --primary-dark: #0a3540;
  --accent: #e8a33d;
  --text: #1f2a30;
  --muted: #5b6b73;
  --bg: #ffffff;
  --bg-alt: #f5f7f6;
  --line: #e3e8e7;
  --radius: 14px;
  --max: 1120px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", system-ui, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.3; margin: 0 0 .6em; }
p { margin: 0 0 1em; }
a { color: inherit; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

.draft-bar {
  background: var(--accent);
  color: #3a2706;
  text-align: center;
  font-size: .85rem;
  padding: 6px 16px;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.1rem; color: var(--primary); letter-spacing: .05em; }
.brand-text small { font-size: .72rem; color: var(--muted); }
.site-nav { display: flex; gap: 28px; }
.site-nav a { text-decoration: none; color: var(--text); font-size: .95rem; }
.site-nav a:hover { color: var(--primary); }

/* Hero */
.hero {
  background:
    radial-gradient(circle at 85% 20%, rgba(232, 163, 61, .25), transparent 40%),
    linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}
.hero-inner { padding: 96px 20px 104px; }
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: .1em; font-size: .9rem; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: .04em; }
.lead { max-width: 560px; font-size: 1.1rem; color: rgba(255, 255, 255, .85); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  text-decoration: none; font-weight: 600; transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #2d1f05; }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .6); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); }

/* Sections */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--primary-dark); color: #fff; }
.section-title { font-size: 1.9rem; position: relative; padding-bottom: 14px; }
.section-title::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 44px; height: 4px; border-radius: 2px; background: var(--accent);
}
.section-sub { color: var(--muted); margin-top: -4px; }
.section-dark .section-sub { color: rgba(255, 255, 255, .7); }

/* About */
.about { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: start; }
.about p { color: var(--muted); }
.values { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.values li {
  display: flex; flex-direction: column; gap: 2px;
  padding: 18px 22px; border: 1px solid var(--line); border-left: 4px solid var(--primary);
  border-radius: 10px; background: #fff;
}
.values strong { color: var(--primary); font-size: 1.05rem; }
.values span { color: var(--muted); font-size: .92rem; }

/* Services */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 28px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover { box-shadow: 0 12px 30px rgba(15, 76, 92, .12); transform: translateY(-3px); }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(15, 76, 92, .08); color: var(--primary); font-weight: 700; margin-bottom: 16px;
}
.card h3 { font-size: 1.15rem; }
.card p { color: var(--muted); font-size: .94rem; margin: 0; }

/* Process */
.steps { list-style: none; margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.steps li { position: relative; padding: 24px; border-radius: var(--radius); background: var(--bg-alt); }
.step-no {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: #fff; font-weight: 700; margin-bottom: 14px;
}
.steps h3 { font-size: 1.1rem; }
.steps p { color: var(--muted); font-size: .94rem; margin: 0; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact-list { margin: 0; display: grid; gap: 14px; }
.contact-list div {
  display: grid; grid-template-columns: 96px 1fr; gap: 12px;
  padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .15);
}
.contact-list dt { color: var(--accent); font-weight: 600; }
.contact-list dd { margin: 0; color: rgba(255, 255, 255, .9); }

/* Footer */
.site-footer { background: #072830; color: rgba(255, 255, 255, .6); font-size: .85rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 22px 20px; }
.footer-inner p { margin: 0; }
.footer-inner a { color: inherit; text-decoration: none; }
.footer-inner a:hover { color: #fff; text-decoration: underline; }

/* Responsive */
@media (max-width: 960px) {
  .cards, .steps { grid-template-columns: repeat(2, 1fr); }
  .about, .contact { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 10px; padding-bottom: 8px; }
  .site-nav { gap: 18px; overflow-x: auto; width: 100%; }
  .site-nav a { white-space: nowrap; font-size: .9rem; }
  .hero-inner { padding: 64px 20px 72px; }
  .section { padding: 56px 0; }
  .cards, .steps { grid-template-columns: 1fr; }
  .contact-list div { grid-template-columns: 80px 1fr; }
}