/* 膜影车匠 通用样式 */
:root {
  --color-black: #0f0f1a;
  --color-dark: #1a1a2e;
  --color-yellow: #F9BD00;
  --color-white: #ffffff;
  --color-bg: #f5f5f5;
  --color-text: #333;
  --color-text-light: #666;
  --color-border: #eee;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--color-text); background: var(--color-bg); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* Header */
.header { background: var(--color-dark); color: var(--color-white); padding: 0 20px; position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; height: 64px; gap: 40px; }
.logo svg { height: 36px; fill: var(--color-yellow); }
.nav { display: flex; gap: 24px; flex: 1; }
.nav a { font-size: 14px; color: rgba(255,255,255,.8); transition: color .2s; }
.nav a:hover { color: var(--color-yellow); }
.header-contact a { font-size: 14px; color: var(--color-yellow); display: flex; align-items: center; gap: 6px; }
.header-contact svg { width: 18px; height: 18px; stroke: var(--color-yellow); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle svg { width: 24px; height: 24px; stroke: var(--color-white); }

/* Banner */
.banner { position: relative; height: 70vh; min-height: 400px; overflow: hidden; }
.banner-video { position: absolute; inset: 0; }
.banner-video video { width: 100%; height: 100%; object-fit: cover; }
.banner-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.5); display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--color-white); text-align: center; }
.banner-overlay h1 { font-size: 42px; margin-bottom: 12px; letter-spacing: 4px; }
.banner-overlay p { font-size: 18px; color: rgba(255,255,255,.8); margin-bottom: 24px; }

/* Buttons */
.btn-primary { display: inline-block; background: var(--color-yellow); color: var(--color-dark); padding: 12px 32px; border-radius: var(--radius-lg); font-size: 15px; font-weight: 600; border: none; cursor: pointer; transition: opacity .2s; }
.btn-primary:hover { opacity: .9; }

/* Sections */
.section { padding: 60px 20px; max-width: 1200px; margin: 0 auto; }
.section h2 { font-size: 28px; text-align: center; margin-bottom: 40px; color: var(--color-dark); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* Cards */
.card { background: var(--color-white); border-radius: var(--radius-md); padding: 24px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: transform .2s; }
.card:hover { transform: translateY(-4px); }
.card svg { width: 48px; height: 48px; margin-bottom: 16px; }
.card h3 { font-size: 18px; margin-bottom: 8px; color: var(--color-dark); }
.card p { font-size: 13px; color: var(--color-text-light); margin-bottom: 12px; }
.price { font-size: 16px; font-weight: 700; color: var(--color-yellow); }

/* Case cards */
.case-card { border-radius: var(--radius-md); overflow: hidden; background: var(--color-white); box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.case-card h3 { padding: 12px 16px; font-size: 14px; }

/* Staff cards */
.staff-card { text-align: center; background: var(--color-white); border-radius: var(--radius-md); padding: 24px; }
.staff-card img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; margin: 0 auto 12px; }
.staff-card h3 { font-size: 16px; }
.staff-card .title { font-size: 13px; color: var(--color-yellow); }

/* Advantages */
.advantage-card { text-align: center; padding: 24px; }
.advantage-card svg { width: 48px; height: 48px; margin-bottom: 12px; stroke: var(--color-yellow); }
.advantage-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--color-dark); }
.advantage-card p { font-size: 13px; color: var(--color-text-light); }

/* Footer */
.footer { background: var(--color-dark); color: rgba(255,255,255,.6); padding: 40px 20px 20px; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; }
.footer h4 { color: var(--color-yellow); margin-bottom: 12px; font-size: 16px; }
.footer a { color: rgba(255,255,255,.6); font-size: 13px; display: block; margin-bottom: 6px; }
.footer a:hover { color: var(--color-yellow); }
.footer-bottom { text-align: center; padding-top: 20px; margin-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: 12px; }

/* Float consult */
.float-consult { position: fixed; bottom: 40px; right: 24px; z-index: 1000; display: flex; flex-direction: column; gap: 12px; }
.float-btn { width: 48px; height: 48px; border-radius: 50%; background: var(--color-yellow); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(0,0,0,.2); }
.float-btn svg { width: 22px; height: 22px; stroke: var(--color-dark); }

/* Page header */
.page-header { background: var(--color-dark); color: var(--color-white); text-align: center; padding: 60px 20px; }
.page-header h1 { font-size: 32px; margin-bottom: 8px; }
.page-header p { color: rgba(255,255,255,.6); }

/* Filter bar */
.filter-bar { max-width: 1200px; margin: 24px auto; display: flex; gap: 16px; padding: 0 20px; }
.filter-bar select { padding: 8px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 14px; }

/* Quote form */
.quote-form { max-width: 600px; margin: 40px auto; padding: 0 20px; }
.quote-form .step { margin-bottom: 32px; }
.quote-form .step h2 { font-size: 18px; margin-bottom: 16px; text-align: left; color: var(--color-dark); }
.quote-form select, .quote-form input { width: 100%; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 12px; }
.project-checkbox { display: flex; align-items: center; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); margin-bottom: 8px; cursor: pointer; }
.project-checkbox input { width: auto; margin-right: 12px; margin-bottom: 0; }
.project-name { flex: 1; font-size: 14px; }
.project-price { font-size: 14px; font-weight: 600; color: var(--color-yellow); }
.price-total { text-align: center; padding: 24px; background: var(--color-dark); border-radius: var(--radius-md); }
.price-total .label { font-size: 16px; color: rgba(255,255,255,.6); }
.price-total .amount { font-size: 36px; font-weight: 700; color: var(--color-yellow); margin-left: 8px; }

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .header-contact { display: none; }
  .nav-toggle { display: block; }
  .banner-overlay h1 { font-size: 24px; }
  .grid, .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}