/* ============================================
   点策公司展示站 — 三端自适应（精简版）
   视口基准：手机 375 / 平板 768 / 电脑 1440
   ============================================ */
:root {
  --primary: #0f3e6e;
  --primary-dark: #0a2c50;
  --accent: #c9a15a;
  --text: #22303f;
  --text-light: #5c6b7a;
  --bg: #ffffff;
  --bg-alt: #f5f8fb;
  --line: #e3eaf1;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 62, 110, .08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #1d5c9e);
  color: #fff; font-weight: 700; font-size: 16px; letter-spacing: 1px;
}
.logo-text { font-weight: 700; font-size: 18px; color: var(--primary-dark); }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { font-size: 15px; color: var(--text-light); transition: color .2s; }
.main-nav a:hover { color: var(--primary); }
.nav-cta {
  padding: 8px 20px; border-radius: 999px;
  background: var(--primary); color: #fff !important; font-size: 14px;
}
.nav-cta:hover { background: var(--primary-dark); }
.nav-toggle { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  background:
    radial-gradient(1000px 400px at 85% -10%, rgba(201,161,90,.12), transparent),
    linear-gradient(180deg, #f7fafd 0%, #ffffff 100%);
  padding: 84px 0 64px; overflow: hidden;
}
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-tag {
  display: inline-block; font-size: 14px; color: var(--primary);
  border: 1px solid rgba(15,62,110,.25); border-radius: 999px;
  padding: 4px 16px; margin-bottom: 20px; background: #fff;
}
.hero h1 {
  font-size: clamp(30px, 4.2vw, 52px);
  line-height: 1.28; color: var(--primary-dark); font-weight: 800;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-sub { margin-top: 22px; font-size: 17px; color: var(--text-light); max-width: 560px; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 600; transition: all .2s;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid var(--primary); color: var(--primary); }
.btn-ghost:hover { background: var(--primary); color: #fff; }

.hero-visual { position: relative; min-height: 320px; }
.hv-card {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 15px 20px; font-size: 14px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 10px;
  animation: float 5s ease-in-out infinite;
}
.hv-1 { top: 10%; left: 4%; }
.hv-2 { top: 44%; right: 0; animation-delay: 1.2s; }
.hv-3 { bottom: 8%; left: 12%; animation-delay: 2.4s; }
.hv-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); flex: 0 0 auto; }
.hv-dot.d2 { background: var(--accent); }
.hv-dot.d3 { background: #3f8f6b; }
.hv-ring { position: absolute; inset: 12% 18%; border: 1.5px dashed rgba(15,62,110,.25); border-radius: 50%; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- 数据条 ---------- */
.stats { background: var(--primary-dark); color: #fff; padding: 36px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat strong { font-size: 30px; font-weight: 800; letter-spacing: .5px; }
.stat strong span { font-size: 16px; font-weight: 600; color: var(--accent); margin-left: 4px; }
.stat strong.stat-sm { font-size: 23px; line-height: 1.4; display: inline-block; }
.stat p { font-size: 13.5px; color: rgba(255,255,255,.75); margin-top: 6px; }

/* ---------- 通用 section ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.sec-tag { font-size: 13px; letter-spacing: 3px; color: var(--accent); font-weight: 700; margin-bottom: 8px; }
.sec-title { font-size: clamp(24px, 3vw, 34px); color: var(--primary-dark); font-weight: 800; margin-bottom: 40px; }

/* ---------- 关于点策 ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
.about-text p { margin-bottom: 16px; }
.about-text strong { color: var(--primary); }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-points li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow);
}
.about-points strong { display: block; color: var(--primary-dark); font-size: 15.5px; margin-bottom: 3px; }
.about-points span { font-size: 13px; color: var(--text-light); line-height: 1.6; display: block; }

/* ---------- 核心服务 ---------- */
.svc-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.svc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
  display: flex; gap: 20px; align-items: flex-start;
  transition: transform .25s, box-shadow .25s;
}
.svc-card:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(15,62,110,.14); }
.svc-num {
  flex: 0 0 auto; width: 48px; height: 48px; border-radius: 12px;
  background: rgba(15,62,110,.08); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800;
}
.svc-card h3 { font-size: 19px; color: var(--primary-dark); margin-bottom: 10px; }
.svc-card p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 产品矩阵 ---------- */
.pm-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.pm-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 30px 24px; box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}
.pm-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(15,62,110,.14); }
.pm-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.pm-badge {
  display: inline-block; padding: 7px 18px; border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #1d5c9e);
  color: #fff; font-weight: 700; font-size: 15px;
}
.pm-badge.pm-b2 { background: linear-gradient(135deg, #0a5c46, #12836a); }
.pm-badge.pm-b3 { background: linear-gradient(135deg, #3a4a5c, #55677c); }
.pm-badge.pm-b4 { background: linear-gradient(135deg, #7a4c12, #b07422); }
.pm-link { font-size: 13px; color: var(--primary); font-weight: 600; }
.pm-link:hover { color: var(--accent); }
.pm-card h3 { font-size: 17.5px; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.5; }
.pm-card p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 服务流程 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.flow-step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; box-shadow: var(--shadow);
}
.flow-step span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff; font-weight: 800; font-size: 15px;
  margin-bottom: 12px;
}
.flow-step h3 { font-size: 16px; color: var(--primary-dark); margin-bottom: 6px; }
.flow-step p { font-size: 13px; color: var(--text-light); }

/* ---------- 联系我们 ---------- */
.contact-card {
  background: linear-gradient(135deg, var(--primary), #164a80);
  color: #fff; border-radius: var(--radius); padding: 40px 38px; max-width: 860px;
}
.contact-card h3 { font-size: 21px; margin-bottom: 10px; }
.c-lead { font-size: 14.5px; color: rgba(255,255,255,.82); margin-bottom: 24px; max-width: 640px; }
.contact-list li {
  display: flex; align-items: baseline; gap: 14px;
  padding: 11px 0; border-top: 1px solid rgba(255,255,255,.18); font-size: 15px;
}
.contact-list span { color: rgba(255,255,255,.65); font-size: 13px; flex: 0 0 44px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.7); padding: 24px 0; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: 13.5px;
}

/* ============================================
   平板端（≤1024px）
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { min-height: 300px; max-width: 560px; margin: 0 auto; width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .about-grid { grid-template-columns: 1fr; }
  .svc-duo, .pm-grid { grid-template-columns: 1fr 1fr; }
  .flow-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   手机端（≤640px）
   ============================================ */
@media (max-width: 640px) {
  .section { padding: 58px 0; }
  .hero { padding: 56px 0 48px; }
  .sec-title { margin-bottom: 30px; }

  .nav-toggle {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; padding: 10px;
    background: none; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
  }
  .nav-toggle span {
    display: block; height: 2px; background: var(--primary); border-radius: 2px;
    transition: transform .25s, opacity .25s;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .main-nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .main-nav.open { max-height: 360px; }
  .main-nav a { padding: 15px 24px; border-top: 1px solid var(--line); font-size: 15px; }
  .main-nav a.nav-cta { margin: 12px 24px; border: none; text-align: center; border-radius: 999px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .stat strong { font-size: 24px; }
  .about-points { grid-template-columns: 1fr; }
  .svc-duo, .pm-grid { grid-template-columns: 1fr; }
  .svc-card { flex-direction: column; gap: 14px; }
  .flow-grid { grid-template-columns: 1fr 1fr; }
  .hv-2 { right: -4%; }
  .contact-card { padding: 28px 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

/* 超窄屏（≤360px）兜底 */
@media (max-width: 360px) {
  .flow-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 27px; }
}