/* ===== 按 store.effort-tech.com（UEEShop t115 主题）品牌皮肤 ===== */
:root {
  --header-bg: #0b0b0b;
  --footer-bg: #070707;
  --body-bg: #F8F8F8;
  --title-color: #222;
  --text-color: #333;
  --blue-accent: #2e3192;
  --price-color: #c00;
  --accent-green: #95BE06;
  --border-color: #e5e5e5;
  --btn-bg: #000;
  --btn-text: #fff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Opensans-Regular", "Open Sans", Arial, sans-serif; background: var(--body-bg); color: var(--text-color); font-size: 14px; line-height: 1.65; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text-color); text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: var(--header-bg); padding: 16px 0; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.site-logo { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.site-nav a { color: #fff; margin-left: 22px; font-size: 13px; }
.site-nav a:hover { color: #bbb; }

/* Hero */
.hero { background: #fff; padding: 56px 0 48px; text-align: center; border-bottom: 1px solid #eee; }
.hero h1 { font-size: 30px; line-height: 1.3; color: var(--title-color); margin-bottom: 16px; font-weight: 700; }
.hero p { max-width: 780px; margin: 0 auto 24px; font-size: 15px; color: #555; }
.hero img { margin: 24px auto 0; max-height: 320px; object-fit: cover; }

/* Buttons（黑底白字 / 白底黑边，对应商城 Buy Now 与 Add to Cart） */
.btn { display: inline-block; background: var(--btn-bg); color: var(--btn-text) !important; padding: 12px 30px; border-radius: 2px; font-weight: 600; font-size: 14px; border: 1px solid #000; transition: all .2s; }
.btn:hover { background: #333; }
.btn-outline { background: #fff; color: #000 !important; border: 1px solid #000; }
.btn-outline:hover { background: #000; color: #fff !important; }

/* Section */
section { padding: 48px 0; }
section h2 { font-size: 24px; color: var(--title-color); margin-bottom: 12px; font-weight: 700; }
section .lead { max-width: 820px; margin-bottom: 28px; color: #555; font-size: 15px; }

/* Product cards */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.product-card { border: 1px solid var(--border-color); border-radius: 4px; padding: 20px; background: #fff; transition: box-shadow .2s; }
.product-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.product-card img { border-radius: 4px; margin-bottom: 14px; background: #f1f1f1; }
.product-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--title-color); font-weight: 700; }
.product-card ul { list-style: none; margin: 10px 0 16px; font-size: 13px; }
.product-card li { padding: 3px 0; border-bottom: 1px dashed #eee; }
.product-card .price-note { color: var(--price-color); font-weight: 600; font-size: 13px; margin-bottom: 10px; }
.product-card .card-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.card-btns .btn { padding: 9px 16px; font-size: 13px; }

/* Price tiers */
.price-tier { background: #fff; border: 1px solid var(--border-color); border-left: 3px solid var(--blue-accent); padding: 16px 20px; margin-bottom: 14px; border-radius: 0 4px 4px 0; }
.price-tier h3 { font-size: 16px; margin-bottom: 4px; color: var(--title-color); }
.price-tier p { font-size: 14px; color: #555; }

/* Applications */
.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.app-item { background: #fff; border: 1px solid var(--border-color); border-radius: 4px; padding: 20px; }
.app-item h3 { font-size: 16px; margin-bottom: 8px; color: var(--title-color); font-weight: 700; }
.app-item p { font-size: 14px; color: #555; }
.app-item img { border-radius: 4px; margin-bottom: 12px; }

/* Trust（对应商城黑色页脚风格） */
.trust { background: var(--header-bg); color: #fff; }
.trust h2 { color: #fff; }
.trust ul { list-style: none; columns: 2; gap: 30px; margin-top: 16px; }
.trust li { padding: 6px 0 6px 26px; position: relative; font-size: 14px; color: #e5e5e5; }
.trust li::before { content: "✔"; position: absolute; left: 0; color: var(--accent-green); }

/* FAQ */
.faq-item { border-bottom: 1px solid #e5e5e5; padding: 16px 0; }
.faq-item h3 { font-size: 16px; font-weight: 700; color: var(--title-color); }
.faq-item p { margin-top: 8px; font-size: 14px; color: #555; }

/* CTA */
.cta { background: #fff; text-align: center; border-top: 1px solid #eee; }
.cta form { max-width: 520px; margin: 24px auto 0; text-align: left; }
.cta label { display: block; font-size: 13px; margin: 10px 0 4px; font-weight: 600; color: var(--title-color); }
.cta input, .cta textarea { width: 100%; padding: 10px 12px; border: 1px solid #ccc; border-radius: 2px; font-size: 14px; font-family: inherit; }
.cta input:focus, .cta textarea:focus { outline: none; border-color: var(--blue-accent); }
.cta button { margin-top: 16px; width: 100%; cursor: pointer; }

/* Footer（纯黑） */
.site-footer { background: var(--footer-bg); color: #ccc; padding: 28px 0 32px; font-size: 13px; }
.site-footer a { color: #fff; }
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer .copyright { width: 100%; margin-top: 16px; color: #999; font-size: 12px; }

@media (max-width: 600px) {
  .hero h1 { font-size: 22px; }
  .trust ul { columns: 1; }
  .site-nav a { margin-left: 12px; }
}