/* Vovbag - 布类包 B2B 网站样式（环保绿色系） */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Arial, sans-serif; color: #2d3436; line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

/* Header */
.site-header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.06); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; }
.logo { font-size: 26px; font-weight: 800; color: #2e7d32; }
.logo span { color: #8d6e63; }
nav a { margin-left: 22px; font-size: 15px; color: #555; transition: color .2s; }
nav a:hover { color: #2e7d32; }

/* Hero */
.hero { background: linear-gradient(135deg, #2e7d32 0%, #4caf50 60%, #81c784 100%); color: #fff; padding: 90px 0 80px; text-align: center; }
.hero h1 { font-size: 44px; margin-bottom: 16px; }
.hero p { font-size: 19px; max-width: 700px; margin: 0 auto 30px; opacity: .95; }
.btn { display: inline-block; background: #fff; color: #2e7d32; padding: 13px 34px; border-radius: 30px; font-weight: 700; font-size: 16px; margin: 6px; transition: transform .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.18); }
.btn-wa { background: #25d366; color: #fff; }
.btn-wa:hover { box-shadow: 0 6px 18px rgba(37,211,102,.4); }

/* Sections */
.section { padding: 64px 0; }
.section h2 { text-align: center; font-size: 32px; margin-bottom: 10px; color: #2e7d32; }
.section .sub { text-align: center; color: #777; margin-bottom: 40px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card { background: #fff; border: 1px solid #eef0f2; border-radius: 12px; padding: 28px; text-align: center; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.card .icon { font-size: 40px; margin-bottom: 14px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14px; color: #666; }

/* Categories */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat { background: #f5faf5; border-radius: 12px; padding: 34px 18px; text-align: center; border: 1px solid #e3efe3; transition: transform .2s; }
.cat:hover { transform: translateY(-4px); }
.cat .emoji { font-size: 42px; display: block; margin-bottom: 12px; }
.cat h3 { font-size: 17px; color: #2e7d32; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { text-align: center; padding: 20px; }
.step .num { display: inline-block; width: 42px; height: 42px; border-radius: 50%; background: #2e7d32; color: #fff; font-size: 20px; font-weight: 700; line-height: 42px; margin-bottom: 12px; }
.step h4 { margin-bottom: 6px; }
.step p { font-size: 13px; color: #666; }

/* CTA band */
.cta-band { background: #2e7d32; color: #fff; text-align: center; padding: 56px 20px; }
.cta-band h2 { font-size: 30px; margin-bottom: 10px; }
.cta-band p { max-width: 640px; margin: 0 auto 22px; opacity: .92; }

/* Footer */
.site-footer { background: #1b2a1c; color: #c9d6ca; padding: 44px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; margin-bottom: 26px; }
.site-footer h4 { color: #fff; margin-bottom: 10px; font-size: 16px; }
.site-footer a { color: #a5d6a7; }
.site-footer a:hover { text-decoration: underline; }
.copyright { text-align: center; font-size: 13px; opacity: .7; border-top: 1px solid #334534; padding-top: 16px; }

/* Breadcrumb */
.breadcrumb { padding: 14px 0; font-size: 14px; color: #888; }
.breadcrumb a { color: #2e7d32; }

/* Page hero (inner pages) */
.page-hero { background: linear-gradient(135deg, #2e7d32, #66bb6a); color: #fff; padding: 52px 0; text-align: center; }
.page-hero h1 { font-size: 36px; }
.page-hero p { opacity: .92; margin-top: 8px; }

/* Forms */
.form-box { max-width: 620px; margin: 0 auto; background: #fff; border: 1px solid #eef0f2; border-radius: 12px; padding: 34px; }
.form-box label { display: block; font-size: 14px; font-weight: 600; margin: 16px 0 6px; }
.form-box input, .form-box select, .form-box textarea { width: 100%; padding: 11px 14px; border: 1px solid #ddd; border-radius: 8px; font-size: 15px; font-family: inherit; }
.form-box textarea { min-height: 120px; }
.form-box .btn { margin: 22px 0 0; border: none; cursor: pointer; }
.form-box .btn-wa { width: 100%; }

/* Blog */
.blog-list { list-style: none; max-width: 760px; margin: 0 auto; }
.blog-list li { padding: 14px 0; border-bottom: 1px solid #eee; display: flex; justify-content: space-between; align-items: center; }
.blog-list a { color: #2e7d32; font-weight: 600; }
.blog-post { max-width: 820px; margin: 0 auto; padding-bottom: 50px; }
.blog-post article { font-size: 16px; }
.blog-post article h2 { margin: 28px 0 12px; font-size: 24px; color: #2e7d32; }
.blog-post .post-date { color: #999; font-size: 14px; margin-bottom: 18px; }
.related { margin-top: 34px; background: #f5faf5; padding: 20px; border-radius: 10px; }

/* Quote form result */
#wa-chat-widget { display: none; }

@media (max-width: 900px) {
  .grid3, .cats, .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 560px) {
  .grid3, .cats, .steps { grid-template-columns: 1fr; }
  nav { display: flex; flex-wrap: wrap; gap: 6px; }
  nav a { margin-left: 0; font-size: 13px; }
}