:root {
  --red: #C8102E;
  --red-dark: #8E1420;
  --ink: #16181D;
  --ink-soft: #3A3F4B;
  --muted: #6B7280;
  --line: #E7E9EE;
  --bg: #FFFFFF;
  --bg-soft: #F6F7F9;
  --gold: #C9A227;
  --max: 1120px;
  --r: 14px;
  --shadow: 0 10px 30px rgba(20, 24, 29, 0.08);
}

* { 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; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 38px; height: 38px; border-radius: 9px; }
.brand .name { font-weight: 800; font-size: 19px; letter-spacing: .3px; }
.brand .name small { display: block; font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: 1.5px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 15px; color: var(--ink-soft); font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--red); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(200,16,46,.12), transparent 60%),
              linear-gradient(180deg, #0E1014 0%, #16181D 100%);
  color: #fff; overflow: hidden;
}
.hero::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: 46px 46px; mask-image: radial-gradient(circle at 70% 30%, #000, transparent 70%);
}
.hero-inner { position: relative; padding: 110px 0 120px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: 2px; color: #FFD5DC;
  border: 1px solid rgba(255,255,255,.22); padding: 6px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.05; font-weight: 900; letter-spacing: -1px; }
.hero h1 .accent { color: var(--red); }
.hero .lead { margin-top: 22px; max-width: 620px; font-size: 19px; color: #C8CCD4; }
.hero-cta { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 700; font-size: 15px; transition: transform .15s, box-shadow .2s;
}
.btn-primary { background: var(--red); color: #fff; box-shadow: 0 8px 24px rgba(200,16,46,.4); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { border: 1px solid rgba(255,255,255,.3); color: #fff; }
.btn-ghost:hover { border-color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 92px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { max-width: 760px; margin-bottom: 52px; }
.tag { color: var(--red); font-weight: 800; letter-spacing: 2px; font-size: 13px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.2; margin-top: 12px; font-weight: 900; letter-spacing: -.5px; }
.section-head p { margin-top: 16px; color: var(--muted); font-size: 17px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px; box-shadow: var(--shadow);
}
.card .ic {
  width: 48px; height: 48px; border-radius: 12px; background: rgba(200,16,46,.1);
  display: grid; place-items: center; color: var(--red); font-size: 22px; margin-bottom: 18px;
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15.5px; }

/* feature split */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.split .visual {
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  border-radius: 20px; padding: 42px; color: #fff; min-height: 320px;
  display: flex; flex-direction: column; justify-content: center; box-shadow: var(--shadow);
}
.split .visual .big { font-size: 54px; font-weight: 900; line-height: 1; letter-spacing: -1px; }
.split .visual .sub { margin-top: 14px; font-size: 16px; color: #FFE0E5; }
.split ul { list-style: none; display: grid; gap: 16px; }
.split li { display: flex; gap: 14px; align-items: flex-start; font-size: 16px; color: var(--ink-soft); }
.split li .dot { flex: none; width: 26px; height: 26px; border-radius: 50%; background: rgba(200,16,46,.12); color: var(--red); display: grid; place-items: center; font-weight: 800; font-size: 13px; margin-top: 2px; }

/* stats */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; }
.stat { text-align: center; padding: 28px 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); }
.stat .n { font-size: 40px; font-weight: 900; color: var(--red); letter-spacing: -1px; }
.stat .l { margin-top: 6px; color: var(--muted); font-size: 14.5px; }

/* ---------- Contact ---------- */
.contact-box {
  background: linear-gradient(135deg, #0E1014, #16181D); color: #fff;
  border-radius: 22px; padding: 56px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center;
}
.contact-box h2 { font-size: 32px; font-weight: 900; }
.contact-box p { color: #C8CCD4; margin-top: 12px; }
.contact-info { display: grid; gap: 16px; }
.contact-info .row { display: flex; gap: 12px; align-items: center; border: 1px solid rgba(255,255,255,.16); padding: 14px 18px; border-radius: 12px; }
.contact-info .row .k { color: #FFD5DC; font-size: 13px; width: 64px; flex: none; letter-spacing: 1px; }
.contact-info .row .v { font-weight: 600; }
.contact-info a.v:hover { color: #FFB3BE; }

/* ---------- Footer ---------- */
.site-footer { background: #0B0D10; color: #9AA0AB; padding: 40px 0; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.footer-inner .brand-f { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; }
.footer-inner .brand-f img { width: 30px; height: 30px; border-radius: 7px; }
.beian { color: #7C828D; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .grid-2, .split, .contact-box, .stats { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .section { padding: 64px 0; }
  .hero-inner { padding: 80px 0 90px; }
  .contact-box { padding: 36px; }
}