:root {
  --navy: #262a31;
  --navy-light: #363b44;
  --blue: #b1232f;
  --blue-soft: #f7eded;
  --gold: #c9a227;
  --gold-light: #e7c75a;
  --ink: #1f2329;
  --muted: #5f6b76;
  --line: #e7e9ee;
  --bg: #f7f8fa;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(30, 35, 41, 0.07);
  --shadow-lg: 0 18px 50px rgba(30, 35, 41, 0.14);
  --maxw: 1180px;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / nav ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 40px; width: auto; display: block; }

.menu { display: flex; align-items: center; gap: 4px; list-style: none; }
.menu a {
  display: block;
  padding: 10px 18px;
  font-weight: 600;
  color: var(--ink);
  border-radius: 8px;
  transition: .2s;
}
.menu a:hover { color: var(--blue); background: var(--blue-soft); }
.menu a.active { color: var(--blue); }
.menu a.active::after {
  content: ""; display: block; height: 2px; margin-top: 4px;
  background: var(--gold); border-radius: 2px;
}

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  font-size: 26px; color: var(--navy);
}

/* ---------- Hero ---------- */
.hero {
  background: url('hero-bg.svg') center/cover no-repeat, #f7eccf;
  color: var(--ink);
  padding: 92px 0 100px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid #ecdcb6;
}
.hero .container { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 2px;
  color: #9a7b16; background: rgba(255,255,255,.5);
  border: 1px solid rgba(184,134,11,.35);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 24px;
}
.hero h1 { font-size: 46px; line-height: 1.28; font-weight: 800; margin-bottom: 20px; color: #2a2418; }
.hero h1 .accent { color: #b8860b; }
.hero p.lead { font-size: 18px; color: #6b6250; max-width: 520px; margin-bottom: 32px; }

/* hero visual panel */
.hero-visual { display: flex; justify-content: center; }
.hero-panel {
  width: 100%; max-width: 380px;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(184,134,11,.22);
  border-radius: 18px;
  padding: 28px 28px 22px;
  box-shadow: 0 24px 60px rgba(120,90,20,.16);
}
.hp-tag {
  display: inline-block; font-size: 12px; letter-spacing: 2px; font-weight: 700;
  color: #9a7b16; background: rgba(201,162,39,.12);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 18px;
}
.hp-row {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 0; border-bottom: 1px solid rgba(120,90,20,.1);
}
.hp-dot {
  flex: none; width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center;
  font-size: 22px; font-weight: 800; color: #fff;
}
.hp-dot.gold { background: linear-gradient(135deg, #e7c75a, #b8860b); }
.hp-dot.silver { background: linear-gradient(135deg, #cfd6dd, #8f9aa6); }
.hp-info { display: flex; flex-direction: column; }
.hp-info strong { font-size: 18px; color: #2a2418; font-weight: 800; }
.hp-info span { font-size: 13px; color: #8a7d62; }
.hp-foot { margin-top: 16px; font-size: 13px; color: #9a8a68; text-align: center; }

/* intro block (company profile) */
.intro-block { max-width: 920px; margin: 0 auto; }
.intro-block h2 { font-size: 32px; color: var(--navy); font-weight: 800; margin-bottom: 20px; text-align: center; }
.intro-block h2::after {
  content: ""; display: block; width: 48px; height: 3px; margin: 14px auto 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-light)); border-radius: 2px;
}
.intro-block p { color: var(--muted); font-size: 16px; line-height: 1.95; margin-bottom: 18px; text-align: justify; }
.intro-block h3 { font-size: 18px; color: var(--navy); font-weight: 700; margin: 26px 0 10px; }
.intro-block ul { margin: 10px 0 18px; padding-left: 4px; list-style: none; }
.intro-block ul li { position: relative; padding: 6px 0 6px 22px; color: var(--muted); line-height: 1.8; }
.intro-block ul li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 30px; border-radius: 999px;
  font-weight: 700; font-size: 16px; transition: .2s; cursor: pointer; border: 0;
}
.btn-gold { background: linear-gradient(135deg, #b8860b, var(--gold)); color: #fff; box-shadow: 0 8px 20px rgba(184,134,11,.3); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(201,162,39,.4); }

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section.alt { background: var(--white); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-head .kicker {
  color: var(--blue); font-weight: 700; letter-spacing: 2px; font-size: 13px;
}
.section-head h2 { font-size: 34px; color: var(--navy); margin: 8px 0 14px; font-weight: 800; }
.section-head p { color: var(--muted); font-size: 16px; }

/* feature grid */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card .ic {
  width: 54px; height: 54px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(201,162,39,.16), rgba(231,199,90,.10));
  border: 1px solid rgba(184,134,11,.18);
  color: #b8860b;
  display: grid; place-items: center; margin-bottom: 18px;
}
.card .ic svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; color: var(--navy); margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 15px; }

/* product cards */
.product-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); transition: .25s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card .top {
  padding: 30px; color: #fff; position: relative;
}
.product-card.gold .top { background: linear-gradient(135deg, #b8860b, #e7c75a); }
.product-card.silver .top { background: linear-gradient(135deg, #6b7785, #c3ccd6); }
.product-card .top .sym { font-size: 13px; opacity: .85; letter-spacing: 2px; }
.product-card .top h3 { font-size: 28px; font-weight: 800; margin: 6px 0; }
.product-card .top p { font-size: 14px; opacity: .9; }
.product-card .body { padding: 26px 30px 30px; }
.spec { display: flex; justify-content: space-between; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.spec:last-child { border-bottom: 0; }
.spec .k { color: var(--muted); }
.spec .v { font-weight: 700; color: var(--navy); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.stat { text-align: center; }
.stat .num { font-size: 42px; font-weight: 800; color: var(--gold); line-height: 1; }
.stat .num span { font-size: 22px; }
.stat .label { color: var(--muted); margin-top: 8px; }

/* split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split h2 { font-size: 32px; color: var(--navy); margin-bottom: 18px; font-weight: 800; }
.split p { color: var(--muted); margin-bottom: 16px; }
.check-list { list-style: none; }
.check-list li { padding: 8px 0 8px 30px; position: relative; color: var(--ink); }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 8px;
  color: var(--gold); font-weight: 800;
}
.media-box {
  border-radius: 16px; min-height: 340px;
  background:
    radial-gradient(400px 200px at 70% 20%, rgba(231,199,90,.35), transparent),
    linear-gradient(135deg, var(--navy), var(--blue));
  display: grid; place-items: center; color: #fff; box-shadow: var(--shadow-lg);
  padding: 40px; text-align: center;
}
.media-box .big { font-size: 64px; }
.media-box h3 { font-size: 24px; margin-top: 14px; }
.media-box p { color: rgba(255,255,255,.8); margin-top: 8px; }
.media-box .mb-tag {
  display: inline-block; font-size: 12px; letter-spacing: 3px; font-weight: 700;
  color: #fff; padding: 6px 16px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.55); background: rgba(255,255,255,.12);
  margin-bottom: 18px;
}
.media-box .mb-tag + h3 { font-size: 34px; margin-top: 0; }

/* CTA band */
.cta-band {
  background:
    radial-gradient(800px 300px at 20% 120%, rgba(201,162,39,.22), transparent),
    linear-gradient(135deg, #fffdf8 0%, #f7eccf 60%, #efdcae 100%);
  color: var(--ink); text-align: center; padding: 70px 0;
  border-top: 1px solid #ecdcb6;
}
.cta-band h2 { font-size: 34px; font-weight: 800; margin-bottom: 12px; color: #2a2418; }
.cta-band p { color: #6b6250; margin-bottom: 28px; font-size: 17px; }

/* page hero (inner pages) */
.page-hero {
  background: url('hero-bg.svg') center/cover no-repeat, #f7eccf;
  color: var(--ink); padding: 72px 0;
  border-bottom: 1px solid #ecdcb6;
}
.page-hero .kicker { color: #9a7b16; letter-spacing: 3px; font-size: 13px; font-weight: 700; }
.page-hero h1 { font-size: 40px; font-weight: 800; margin: 10px 0; color: #2a2418; }
.page-hero p { color: #6b6250; max-width: 640px; }
.crumbs { font-size: 13px; color: #9a8a68; margin-top: 16px; }
.crumbs a:hover { color: #6b5a16; }

/* ---------- Footer ---------- */
.footer { background: var(--navy); color: rgba(255,255,255,.7); padding: 0; }
.footer a:hover { color: var(--gold-light); }
.footer-bottom {
  margin-top: 0; padding: 40px 0;
  font-size: 13px; color: rgba(255,255,255,.5);
  text-align: center; line-height: 1.9;
}
.footer-bottom .foot-links { margin-bottom: 12px; color: rgba(255,255,255,.65); }
.footer-bottom .foot-links a { padding: 0 8px; }
.footer-bottom .foot-links a:not(:last-child) { border-right: 1px solid rgba(255,255,255,.18); }
.footer-bottom p { margin: 5px auto; max-width: 1040px; }
.footer-bottom .warn { color: rgba(255,255,255,.42); max-width: none; font-size: 12.5px; white-space: nowrap; }
@media (max-width: 1180px) {
  .footer-bottom .warn { white-space: normal; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .menu {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px; gap: 2px; display: none;
  }
  .menu.open { display: flex; }
  .hero .container, .split { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .hero-visual { margin-top: 24px; }
  .hero-panel { max-width: 100%; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}