* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: #0f172a; color: #e2e8f0; line-height: 1.7; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* 固定导航 */
.nav-fixed { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 20px 40px; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s; }
.nav-fixed.scrolled { background: rgba(15,23,42,0.95); backdrop-filter: blur(10px); padding: 14px 40px; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.nav-logo { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: 1px; }
.nav-logo span { color: #d4af37; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 13px; color: rgba(255,255,255,0.7); font-weight: 500; transition: color 0.3s; }
.nav-links a:hover { color: #d4af37; }
.nav-cta { padding: 8px 22px; border: 1px solid #d4af37; color: #d4af37; border-radius: 2px; font-size: 13px; font-weight: 600; transition: all 0.3s; }
.nav-cta:hover { background: #d4af37; color: #0f172a; }

/* 全屏section通用 */
.full-section { min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden; }
.full-section .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 80px 40px; }

/* Hero - 全屏背景图 */
.hero-full { background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,58,95,0.75) 100%), url('https://aka.doubaocdn.com/s/9yaYXxVFIT') center/cover no-repeat; }
.hero-full .container { text-align: center; }
.hero-label { display: inline-block; padding: 6px 18px; border: 1px solid rgba(212,175,55,0.4); color: #d4af37; font-size: 12px; letter-spacing: 3px; margin-bottom: 30px; text-transform: uppercase; }
.hero-full h1 { font-size: 64px; font-weight: 900; color: #fff; line-height: 1.15; margin-bottom: 24px; letter-spacing: -1px; }
.hero-full h1 .gold { color: #d4af37; }
.hero-full p { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 40px; line-height: 1.9; }
.hero-actions { display: flex; gap: 16px; justify-content: center; }
.btn-gold { display: inline-block; padding: 14px 36px; background: #d4af37; color: #0f172a; font-size: 14px; font-weight: 700; border-radius: 2px; transition: all 0.3s; letter-spacing: 1px; }
.btn-gold:hover { background: #e5c158; transform: translateY(-2px); box-shadow: 0 10px 30px rgba(212,175,55,0.3); }
.btn-outline-light { display: inline-block; padding: 14px 36px; border: 1px solid rgba(255,255,255,0.4); color: #fff; font-size: 14px; font-weight: 600; border-radius: 2px; transition: all 0.3s; }
.btn-outline-light:hover { border-color: #d4af37; color: #d4af37; }
.hero-stats { display: flex; justify-content: center; gap: 60px; margin-top: 60px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.1); }
.hero-stat .num { font-size: 42px; font-weight: 900; color: #d4af37; }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 4px; letter-spacing: 1px; }

/* 分屏布局 */
.split-section { background: #0f172a; }
.split-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split-img { position: relative; border-radius: 4px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.split-img img { width: 100%; height: 500px; object-fit: cover; }
.split-img::after { content: ''; position: absolute; top: 20px; left: 20px; right: 20px; bottom: 20px; border: 1px solid rgba(212,175,55,0.3); pointer-events: none; }
.split-text .section-label { display: inline-block; color: #d4af37; font-size: 12px; letter-spacing: 3px; margin-bottom: 16px; text-transform: uppercase; }
.split-text h2 { font-size: 40px; font-weight: 900; color: #fff; margin-bottom: 20px; line-height: 1.2; }
.split-text h2 .gold { color: #d4af37; }
.split-text > p { font-size: 15px; color: rgba(255,255,255,0.6); line-height: 1.9; margin-bottom: 24px; }
.split-list { margin-bottom: 30px; }
.split-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-size: 14px; color: rgba(255,255,255,0.75); border-bottom: 1px solid rgba(255,255,255,0.06); }
.split-list li:last-child { border-bottom: none; }
.split-list li .icon { color: #d4af37; font-weight: bold; flex-shrink: 0; }

/* 优势 - 深色背景卡片 */
.advantages-section { background: #1e293b; }
.advantages-section .section-header { text-align: center; margin-bottom: 50px; }
.advantages-section .section-label { color: #d4af37; font-size: 12px; letter-spacing: 3px; margin-bottom: 12px; text-transform: uppercase; }
.advantages-section h2 { font-size: 36px; font-weight: 900; color: #fff; margin-bottom: 12px; }
.advantages-section .section-desc { font-size: 15px; color: rgba(255,255,255,0.5); max-width: 560px; margin: 0 auto; }
.adv-grid-full { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-card-full { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 4px; padding: 36px 28px; transition: all 0.3s; position: relative; overflow: hidden; }
.adv-card-full::before { content: ''; position: absolute; top: 0; left: 0; width: 40px; height: 2px; background: #d4af37; transition: width 0.3s; }
.adv-card-full:hover { border-color: rgba(212,175,55,0.3); background: rgba(212,175,55,0.03); transform: translateY(-4px); }
.adv-card-full:hover::before { width: 100%; }
.adv-card-full .adv-icon { font-size: 36px; margin-bottom: 18px; }
.adv-card-full h4 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.adv-card-full p { font-size: 14px; color: rgba(255,255,255,0.55); line-height: 1.8; }

/* 流程 - 横向数字 */
.process-section { background: #0f172a; }
.process-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; }
.process-step { text-align: center; padding: 40px 20px; position: relative; border-right: 1px solid rgba(255,255,255,0.06); }
.process-step:last-child { border-right: none; }
.process-step .step-num { font-size: 56px; font-weight: 900; color: rgba(212,175,55,0.15); line-height: 1; margin-bottom: 16px; transition: color 0.3s; }
.process-step:hover .step-num { color: #d4af37; }
.process-step h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.process-step p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.7; }

/* 团队 */
.team-section { background: #1e293b; }
.team-grid-full { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card-full { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 4px; overflow: hidden; transition: all 0.3s; }
.team-card-full:hover { transform: translateY(-6px); border-color: rgba(212,175,55,0.3); box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.team-card-full .avatar { width: 100%; height: 220px; overflow: hidden; }
.team-card-full .avatar img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.team-card-full:hover .avatar img { transform: scale(1.05); }
.team-card-full .info { padding: 22px 20px; text-align: center; }
.team-card-full .info h4 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.team-card-full .info .role { font-size: 12px; color: #d4af37; margin-bottom: 12px; letter-spacing: 1px; }
.team-card-full .info p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 18px; min-height: 44px; }
.team-card-full .info a { display: inline-block; padding: 8px 24px; border: 1px solid #d4af37; color: #d4af37; font-size: 12px; font-weight: 600; border-radius: 2px; transition: all 0.3s; }
.team-card-full .info a:hover { background: #d4af37; color: #0f172a; }

/* 联系CTA - 全屏 */
.contact-full { background: linear-gradient(135deg, rgba(15,23,42,0.9) 0%, rgba(30,58,95,0.85) 100%), url('https://aka.doubaocdn.com/s/rbN7iTbhel') center/cover no-repeat; text-align: center; }
.contact-full h2 { font-size: 48px; font-weight: 900; color: #fff; margin-bottom: 20px; }
.contact-full h2 .gold { color: #d4af37; }
.contact-full p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto 36px; line-height: 1.9; }
.contact-info-row { display: flex; justify-content: center; gap: 50px; margin-top: 40px; flex-wrap: wrap; }
.contact-info-item { text-align: center; }
.contact-info-item .icon { font-size: 28px; margin-bottom: 10px; }
.contact-info-item .label { font-size: 12px; color: rgba(255,255,255,0.5); margin-bottom: 4px; letter-spacing: 1px; }
.contact-info-item .value { font-size: 16px; color: #d4af37; font-weight: 600; }

/* 页脚 */
.footer-dark { background: #020617; padding: 50px 40px 24px; color: rgba(255,255,255,0.4); }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 30px; flex-wrap: wrap; gap: 30px; }
.footer-brand h4 { font-size: 20px; color: #fff; margin-bottom: 12px; font-weight: 800; }
.footer-brand h4 span { color: #d4af37; }
.footer-brand p { font-size: 13px; line-height: 1.8; max-width: 400px; }
.flink-wrap { margin-top: 20px; }
.flink-toggle { cursor: pointer; user-select: none; font-size: 13px; color: rgba(255,255,255,0.6); display: inline-block; }
.flink-toggle:hover { color: #d4af37; }
.flink-box { margin-top: 10px; font-size: 12px; line-height: 2.2; }
.flink-box.hidden { display: none !important; }
.flink-box a { color: rgba(255,255,255,0.4); margin-right: 14px; }
.flink-box a:hover { color: #d4af37; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; font-size: 12px; text-align: center; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-full h1 { font-size: 40px; }
  .hero-stats { gap: 30px; flex-wrap: wrap; }
  .split-wrap { grid-template-columns: 1fr; gap: 40px; }
  .split-img img { height: 350px; }
  .split-text h2 { font-size: 28px; }
  .adv-grid-full { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .team-grid-full { grid-template-columns: repeat(2, 1fr); }
  .contact-full h2 { font-size: 32px; }
  .contact-info-row { gap: 30px; }
}
@media (max-width: 500px) {
  .nav-fixed { padding: 14px 20px; }
  .full-section .container { padding: 60px 20px; }
  .hero-full h1 { font-size: 32px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .process-grid { grid-template-columns: 1fr; }
  .team-grid-full { grid-template-columns: 1fr; }
  .footer-dark { padding: 40px 20px 20px; }
}