/* ============ 设计变量 · 雅白朱砂 ============ */
:root {
  --accent: #9E3B2E;         /* 深朱砂红 */
  --accent-dark: #822E23;
  --ink: #1C1A18;            /* 墨黑 */
  --muted: #6B645E;          /* 次要文字 */
  --bg: #FCFBF9;             /* 近纯白 */
  --bg-alt: #F6F3EF;         /* 次级背景（极浅暖白） */
  --line: #E8E3DC;           /* 描边/分隔线 */
  --white: #FFFFFF;
  --radius: 14px;
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text",
          "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --serif: Georgia, "Songti SC", "STSong", "SimSun", serif;
}

/* ============ 基础 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ============ 导航 ============ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(252, 251, 249, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.nav__brand { display: flex; align-items: center; gap: 11px; }
.nav__logo {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: var(--accent);
  color: var(--white);
  border-radius: 8px;
  font-weight: 700; font-size: 17px;
}
.nav__name { font-weight: 600; font-size: 16px; letter-spacing: .01em; }
.nav__links { display: flex; gap: 30px; }
.nav__links a { color: var(--muted); font-size: 15px; transition: color .2s; }
.nav__links a:hover { color: var(--accent); }

/* ============ Hero ============ */
.hero {
  background:
    radial-gradient(900px 420px at 82% -8%, rgba(158, 59, 46, 0.06), transparent 70%),
    var(--bg);
  padding: 120px 0 104px;
  border-bottom: 1px solid var(--line);
}
.hero__inner { max-width: 800px; }
.hero__eyebrow {
  display: inline-flex; align-items: center;
  color: var(--accent);
  font-weight: 600; font-size: 14px;
  letter-spacing: .08em;
  margin-bottom: 26px;
}
.hero__eyebrow::before {
  content: ""; width: 28px; height: 1px;
  background: var(--accent); margin-right: 12px;
}
.hero__title {
  font-family: var(--serif);
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}
.hero__sub {
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--muted);
  margin-bottom: 40px;
  max-width: 560px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 50px; padding: 0 30px;
  border-radius: 4px;
  font-size: 16px; font-weight: 600;
  transition: transform .15s, background .2s, border-color .2s, color .2s;
}
.btn--primary {
  background: var(--accent); color: var(--white);
}
.btn--primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn--ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--ink);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ============ 通用区块 ============ */
.section { padding: 104px 0; }
.section--alt { background: var(--bg-alt); }
.section__eyebrow {
  color: var(--accent);
  font-weight: 600; font-size: 13px;
  letter-spacing: .14em; text-transform: uppercase;
  margin-bottom: 16px;
}
.section__title {
  font-family: var(--serif);
  font-size: clamp(28px, 4.2vw, 40px);
  font-weight: 700; letter-spacing: 0.01em;
  margin-bottom: 22px;
}
.section__lead { font-size: 18px; color: var(--muted); max-width: 680px; }

/* ============ 数据条 ============ */
.stats { display: flex; gap: 0; margin-top: 56px; flex-wrap: wrap; }
.stat {
  display: flex; flex-direction: column;
  padding: 0 44px;
  border-left: 1px solid var(--line);
}
.stat:first-child { padding-left: 0; border-left: 0; }
.stat__num {
  font-family: var(--serif);
  font-size: 44px; font-weight: 700;
  color: var(--accent); line-height: 1.05;
}
.stat__label { color: var(--muted); font-size: 15px; margin-top: 8px; }

/* ============ 卡片网格 ============ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px; margin-top: 52px;
}

/* 品牌卡 */
.brand-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 34px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.brand-card:hover {
  transform: translateY(-4px);
  border-color: rgba(158, 59, 46, 0.3);
  box-shadow: 0 18px 44px rgba(40, 30, 26, 0.08);
}
.brand-card__badge {
  width: 50px; height: 50px;
  display: grid; place-items: center;
  background: var(--accent);
  color: var(--white);
  border-radius: 10px;
  font-size: 23px; font-weight: 700;
  margin-bottom: 22px;
}
.brand-card__name { font-family: var(--serif); font-size: 23px; font-weight: 700; margin-bottom: 12px; }
.brand-card__desc { color: var(--muted); margin-bottom: 20px; }
.brand-card__stores {
  font-size: 14px; color: var(--accent-dark);
  padding-top: 18px; border-top: 1px solid var(--line);
}

/* 业务卡 */
.service-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
}
.service-card__title { font-family: var(--serif); font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.service-card__desc { color: var(--muted); }

/* ============ 联系方式 ============ */
.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px; margin-top: 48px;
}
.contact__item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  display: flex; flex-direction: column; gap: 10px;
}
.contact__label {
  color: var(--accent); font-size: 13px;
  letter-spacing: .1em; text-transform: uppercase; font-weight: 600;
}
.contact__value { font-size: 17px; font-weight: 600; }

/* ============ 页脚 ============ */
.footer { background: var(--ink); color: #C9C2BA; padding: 56px 0; }
.footer__inner { display: flex; flex-direction: column; gap: 12px; align-items: center; text-align: center; }
.footer__company { font-family: var(--serif); font-size: 18px; font-weight: 600; color: #F3EEE7; }
.footer__meta { font-size: 14px; color: #8F877E; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center; }
.footer__sep { opacity: .5; }
.footer__icp { color: #8F877E; transition: color .2s; }
.footer__icp:hover { color: var(--accent); }

/* ============ 移动端 ============ */
@media (max-width: 640px) {
  .nav__name { display: none; }
  .nav__links { gap: 20px; }
  .nav__links a { font-size: 14px; }
  .hero { padding: 76px 0 64px; }
  .section { padding: 64px 0; }
  .stats { gap: 28px; }
  .stat { padding: 0; border-left: 0; }
  .hero__actions .btn { flex: 1; }
}