/* ================================
   济南会务公司 · 共享样式表
   配色：会务深蓝 + 金色
================================ */

:root {
  --primary: #163a6b;       /* 会务深蓝 */
  --primary-dark: #0e2749;
  --primary-deep: #0a1d38;
  --gold: #c9a35d;          /* 金色点缀 */
  --gold-light: #e2c892;
  --dark: #141c28;
  --gray-900: #2b2f36;
  --gray-700: #4a505a;
  --gray-500: #7a808a;
  --gray-300: #d6d9de;
  --gray-100: #eef2f7;
  --light: #f7f9fc;
  --white: #ffffff;
  --shadow: 0 10px 40px rgba(14, 39, 73, .08);
  --shadow-lg: 0 20px 60px rgba(14, 39, 73, .16);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: all .35s cubic-bezier(.4, 0, .2, 1);
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ============ 顶部导航 ============ */
.topbar {
  background: var(--dark);
  color: #c4ccd6;
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.topbar a:hover { color: var(--gold-light); }
.topbar .info span { margin-right: 22px; }
.topbar .info i { color: var(--gold); margin-right: 6px; font-style: normal; }

.site-header {
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--container);
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
}
.logo .badge {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--gold-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900;
  border-radius: var(--radius);
  box-shadow: 0 4px 14px rgba(22, 58, 107, .3);
}
.logo .sub {
  font-size: 11px;
  color: var(--gray-500);
  font-weight: 400;
  letter-spacing: 1px;
  margin-top: 2px;
}
.nav-menu {
  display: flex;
  gap: 4px;
  list-style: none;
}
.nav-menu > li > a {
  padding: 10px 18px;
  color: var(--gray-700);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  position: relative;
}
.nav-menu > li > a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 4px;
  width: 0; height: 2px;
  background: var(--gold);
  transition: var(--transition);
  transform: translateX(-50%);
}
.nav-menu > li > a:hover,
.nav-menu > li > a.active { color: var(--primary); }
.nav-menu > li > a:hover::after,
.nav-menu > li > a.active::after { width: 20px; }

.nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 14px;
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); }

.menu-toggle { display: none; font-size: 28px; cursor: pointer; background: none; border: none; color: var(--primary); }

/* ============ Hero 区 ============ */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10, 29, 56, .9) 0%, rgba(22, 58, 107, .72) 100%);
  z-index: 1;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  transform: scale(1.05);
}
.hero .container { position: relative; z-index: 2; padding: 80px 24px; }
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.hero h1 .accent { color: var(--gold-light); }
.hero .lead {
  font-size: 19px;
  max-width: 640px;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, .9);
}
.hero .btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 12px 28px rgba(14, 39, 73, .4); }
.btn-gold { background: var(--gold); color: var(--dark); }
.btn-gold:hover { background: var(--gold-light); transform: translateY(-3px); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, .8);
  padding: 12px 30px;
}
.btn-outline:hover { background: #fff; color: var(--primary); }

/* 内页 banner */
.page-banner {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10, 29, 56, .9), rgba(22, 58, 107, .78));
  z-index: 1;
}
.page-banner .bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.page-banner .container { position: relative; z-index: 2; padding: 70px 24px; }
.page-banner h1 {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.page-banner .lead { font-size: 18px; color: rgba(255, 255, 255, .9); }
.breadcrumb { font-size: 13px; color: rgba(255, 255, 255, .75); margin-top: 18px; }
.breadcrumb a:hover { color: var(--gold-light); }
.breadcrumb .sep { margin: 0 8px; }

/* ============ 通用区块 ============ */
.section { padding: 90px 0; }
.section.section-gray { background: var(--gray-100); }
.section.section-dark { background: var(--primary-deep); color: #c4ccd6; }
.section.section-dark h2, .section.section-dark .section-title-main { color: #fff; }

.section-header { text-align: center; max-width: 760px; margin: 0 auto 60px; }
.section-eyebrow {
  display: inline-block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 14px;
  position: relative;
  padding: 0 50px;
}
.section-eyebrow::before, .section-eyebrow::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 36px;
  height: 1px;
  background: var(--gold);
}
.section-eyebrow::before { left: 0; }
.section-eyebrow::after { right: 0; }
.section-title-main {
  font-size: 36px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-sub {
  color: var(--gray-500);
  font-size: 16px;
}

/* ============ 服务卡片 ============ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.service-card .thumb {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.service-card .thumb::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 29, 56, .55));
}
.service-card .thumb .num {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
  background: var(--gold);
  color: var(--primary-deep);
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 15px;
}
.service-card .body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.service-card h3 { font-size: 20px; color: var(--gray-900); margin-bottom: 10px; }
.service-card p { color: var(--gray-500); font-size: 14px; flex: 1; }
.service-card .more {
  margin-top: 16px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex; align-items: center; gap: 6px;
}
.service-card .more:hover { gap: 12px; color: var(--gold); }

/* ============ 子服务列表 ============ */
.sub-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.sub-service-item {
  background: #fff;
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.sub-service-item::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.sub-service-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.sub-service-item:hover::before { transform: scaleX(1); }
.sub-service-item .icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--gold-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 18px;
}
.sub-service-item h4 { font-size: 19px; color: var(--gray-900); margin-bottom: 10px; }
.sub-service-item p { color: var(--gray-500); font-size: 14px; }

/* ============ 包含清单（双栏勾选） ============ */
.include-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px 40px;
  max-width: 1000px;
  margin: 0 auto;
}
.include-grid li {
  list-style: none;
  padding: 12px 0 12px 34px;
  position: relative;
  border-bottom: 1px dashed var(--gray-300);
  color: var(--gray-700);
  font-size: 15px;
}
.include-grid li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 10px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--gold-light);
  font-size: 13px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* ============ 流程 ============ */
.process-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  counter-reset: step;
}
.process-step {
  text-align: center;
  position: relative;
  padding: 20px;
}
.process-step .step-num {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  position: relative;
  counter-increment: step;
}
.process-step .step-num::before {
  content: counter(step, decimal-leading-zero);
}
.process-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50px;
  right: -20px;
  color: var(--gold);
  font-size: 22px;
}
.process-step h4 { font-size: 18px; margin-bottom: 8px; color: var(--gray-900); }
.process-step p { font-size: 14px; color: var(--gray-500); }

/* ============ 案例展示 ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.case-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  height: 260px;
  cursor: pointer;
}
.case-item .bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transition: var(--transition);
}
.case-item:hover .bg { transform: scale(1.08); }
.case-item::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 29, 56, .88));
}
.case-item .info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px;
  z-index: 2;
  color: #fff;
}
.case-item .tag {
  display: inline-block;
  background: var(--gold);
  color: var(--primary-deep);
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius);
  margin-bottom: 10px;
}
.case-item h4 { font-size: 19px; margin-bottom: 4px; }
.case-item .meta { font-size: 13px; color: rgba(255, 255, 255, .8); }

/* ============ 数据统计 ============ */
.stats {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 70px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  text-align: center;
}
.stat-item .num {
  font-size: 48px;
  font-weight: 800;
  color: var(--gold-light);
  line-height: 1;
}
.stat-item .num .suffix { font-size: 24px; }
.stat-item .label { margin-top: 10px; font-size: 15px; opacity: .9; }

/* ============ 关于我们 ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 420px;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-lg);
}
.about-text h2 { font-size: 32px; color: var(--gray-900); margin-bottom: 8px; }
.about-text .eyebrow { color: var(--primary); font-weight: 700; letter-spacing: 2px; margin-bottom: 12px; display: block; }
.about-text p { color: var(--gray-700); margin-bottom: 18px; }
.about-features { list-style: none; margin-top: 24px; }
.about-features li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--gray-300);
  display: flex; align-items: center; gap: 12px;
  color: var(--gray-700);
}
.about-features li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
}

/* ============ CTA ============ */
.cta {
  background: var(--primary-deep);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  top: -50%; right: -10%;
  width: 500px; height: 500px;
  background: var(--gold);
  opacity: .14;
  border-radius: 50%;
  filter: blur(80px);
}
.cta .container { position: relative; z-index: 2; text-align: center; }
.cta h2 { font-size: 36px; margin-bottom: 14px; }
.cta p { color: #b9c4d2; margin-bottom: 28px; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ============ 联系页 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}
.contact-info-card {
  background: var(--gray-100);
  padding: 36px;
  border-radius: var(--radius-lg);
}
.contact-info-card h3 { font-size: 22px; color: var(--gray-900); margin-bottom: 24px; }
.contact-info-card .item {
  display: flex; gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-300);
}
.contact-info-card .item:last-child { border-bottom: none; }
.contact-info-card .ic {
  width: 44px; height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--primary);
  color: var(--gold-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.contact-info-card .txt .lbl { font-size: 13px; color: var(--gray-500); }
.contact-info-card .txt .val { font-size: 15px; color: var(--gray-900); font-weight: 500; }

.contact-form {
  background: #fff;
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.contact-form h3 { font-size: 22px; margin-bottom: 24px; color: var(--gray-900); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; color: var(--gray-700); margin-bottom: 6px; font-weight: 500; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 58, 107, .12);
}
.form-group textarea { min-height: 130px; resize: vertical; }

.map-embed {
  margin-top: 60px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 380px;
  background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-500);
  position: relative;
}
.map-embed svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-embed .map-caption {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, .92);
  padding: 18px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
}
.map-embed .map-caption strong { display: block; color: var(--primary); font-size: 17px; margin-bottom: 4px; }

/* ============ 页脚 ============ */
.site-footer {
  background: var(--dark);
  color: #a6b0bd;
  padding: 60px 0 20px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col p { line-height: 1.9; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a:hover { color: var(--gold-light); }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .sub { color: #8a94a2; }
.footer-contact .item { margin-bottom: 12px; display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .item .ic { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid #2a3442;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #78829000;
  color: #788290;
  font-size: 13px;
}
.footer-bottom a:hover { color: var(--gold-light); }
.go-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 46px; height: 46px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 99;
  box-shadow: 0 6px 20px rgba(10, 29, 56, .3);
}
.go-top.show { opacity: 1; pointer-events: auto; }
.go-top:hover { background: var(--gold); color: var(--primary-deep); transform: translateY(-3px); }

/* ============ 优势特色 ============ */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
}
.advantage-item {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.advantage-item:hover { transform: translateY(-6px); }
.advantage-item .icon {
  width: 72px; height: 72px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 30px;
  font-weight: 700;
}
.advantage-item h4 { font-size: 19px; color: var(--gray-900); margin-bottom: 8px; }
.advantage-item p { color: var(--gray-500); font-size: 14px; }

/* ============ 404 ============ */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
}
.error-page .code {
  font-size: 120px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.error-page .code span { color: var(--gold); }
.error-page h2 { font-size: 26px; margin: 12px 0; }
.error-page p { color: var(--gray-500); margin-bottom: 28px; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .nav-menu {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-200%);
    transition: var(--transition);
    gap: 0;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu > li { width: 100%; }
  .nav-menu > li > a { display: block; padding: 14px 18px; border-radius: 0; }
  .nav-cta { display: none; }
  .menu-toggle { display: block; }
  .hero h1 { font-size: 38px; }
  .page-banner h1 { font-size: 32px; }
  .section-title-main { font-size: 28px; }
  .section { padding: 60px 0; }
  .process-step:not(:last-child)::after { display: none; }
  .topbar .info span:nth-child(n+2) { display: none; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .topbar .info span:first-child { display: block; margin: 0; }
}

/* 简易动画 */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity .8s, transform .8s; }
.fade-up.visible { opacity: 1; transform: translateY(0); }