/* ============================================================
   ZSYZDL 共享样式表 - 供产品详情页和博客文章页使用
   与首页 (index.html) 保持一致的深色霓虹风格
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; scroll-behavior: smooth; }

:root {
    --neon-purple: #a855f7;
    --neon-cyan: #06b6d4;
    --neon-pink: #ec4899;
    --neon-orange: #f59e0b;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --text-dim: #888;
    --text-faint: #666;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #050505;
    color: #ffffff;
    line-height: 1.7;
    overflow-x: hidden;
    padding-top: 70px;
}
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at 20% 50%, rgba(168,85,247,0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(6,182,212,0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(236,72,153,0.04) 0%, transparent 50%);
    pointer-events: none; z-index: 0;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ====== 导航 ====== */
nav {
    position: fixed; top: 0; width: 100%; height: 70px;
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 6%; background: rgba(5,5,5,0.85); backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255,255,255,0.06); z-index: 1000;
}
.logo {
    font-size: 22px; font-weight: 800; letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 30%, var(--neon-purple) 70%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.nav-links { display: flex; align-items: center; }
.nav-links a {
    color: rgba(255,255,255,0.45); margin-left: 30px; font-size: 12px;
    text-transform: uppercase; letter-spacing: 2px; font-weight: 500;
    position: relative; transition: 0.3s;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px;
    background: linear-gradient(90deg, var(--neon-purple), var(--neon-cyan));
    transition: width 0.3s;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }
.btn-amazon {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
    color: #fff !important; padding: 8px 20px; border-radius: 50px;
    font-weight: 600; letter-spacing: 0 !important; box-shadow: 0 0 20px rgba(168,85,247,0.3);
}
.btn-amazon:hover { box-shadow: 0 0 30px rgba(168,85,247,0.5); transform: translateY(-1px); }

/* ====== 面包屑 ====== */
.breadcrumb {
    max-width: 1200px; margin: 0 auto; padding: 24px 6% 0;
    font-size: 13px; color: var(--text-faint);
}
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 8px; }

/* ====== 通用 section ====== */
.section { max-width: 1200px; margin: 0 auto; padding: 60px 6%; position: relative; z-index: 1; }
.section-tag {
    display: inline-block; color: var(--neon-purple); font-size: 12px;
    text-transform: uppercase; letter-spacing: 2px; font-weight: 700;
    margin-bottom: 14px;
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem); color: #fff; font-weight: 700;
    margin-bottom: 20px; letter-spacing: -0.5px;
}
.section p { color: var(--text-dim); font-size: 1rem; }

/* ====== 按钮 ====== */
.btn-primary {
    display: inline-block; padding: 16px 40px; border-radius: 50px;
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
    color: #fff; font-weight: 600; font-size: 15px; border: none; cursor: pointer;
    box-shadow: 0 0 24px rgba(168,85,247,0.35); transition: 0.3s;
}
.btn-primary:hover { box-shadow: 0 0 40px rgba(168,85,247,0.55); transform: translateY(-2px); color: #fff; }
.btn-secondary {
    display: inline-block; padding: 16px 40px; border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.2); color: #fff; font-weight: 600;
    font-size: 15px; background: transparent; cursor: pointer; transition: 0.3s;
}
.btn-secondary:hover { border-color: var(--neon-purple); color: #fff; }

/* ====== 产品详情 Hero ====== */
.product-hero {
    display: grid; grid-template-columns: 1fr 1fr; gap: 50px;
    align-items: center; max-width: 1200px; margin: 0 auto;
    padding: 40px 6% 60px; position: relative; z-index: 1;
}
.product-hero-image {
    border-radius: 20px; overflow: hidden; border: 1px solid var(--glass-border);
    background: radial-gradient(ellipse at center, #16162a 0%, #0a0a14 70%);
    display: flex; align-items: center; justify-content: center; padding: 40px;
}
.product-hero-image img { max-height: 440px; object-fit: contain; border-radius: 12px; }
.product-hero-info h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.15;
    margin-bottom: 14px; letter-spacing: -1px;
}
.product-hero-info .badge {
    display: inline-block; padding: 4px 14px; border-radius: 20px;
    font-size: 12px; font-weight: 700; letter-spacing: 1px; margin-bottom: 16px;
}
.badge-amazon-choice { background: rgba(255,193,7,0.15); color: #ffc107; border: 1px solid rgba(255,193,7,0.3); }
.badge-2pack { background: rgba(168,85,247,0.15); color: #c084fc; border: 1px solid rgba(168,85,247,0.3); }
.product-hero-info .desc { color: var(--text-dim); font-size: 1.05rem; margin-bottom: 20px; }
.product-price { margin-bottom: 16px; }
.product-price .current { font-size: 2rem; font-weight: 800; color: #fff; }
.product-price .strike { font-size: 1.2rem; color: var(--text-faint); text-decoration: line-through; margin-left: 10px; }
.product-rating { color: #ffc107; font-size: 14px; margin-bottom: 20px; }
.product-rating span { color: var(--text-dim); }
.product-hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.region-tip { color: var(--text-faint); font-size: 12px; margin-top: 16px; }

/* ====== 特性网格 ====== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-item {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: 16px; padding: 28px; transition: 0.3s;
}
.feature-item:hover { border-color: rgba(168,85,247,0.3); }
.feature-item h3 { font-size: 1.1rem; color: #fff; margin-bottom: 10px; }
.feature-item p { font-size: 0.92rem; color: var(--text-dim); }

/* ====== 规格表 ====== */
.spec-table { width: 100%; border-collapse: collapse; margin-top: 20px; }
.spec-table th {
    background: rgba(168,85,247,0.1); color: #c084fc; padding: 14px 18px;
    text-align: left; font-weight: 600; font-size: 14px;
}
.spec-table td { padding: 13px 18px; border-bottom: 1px solid var(--glass-border); font-size: 14px; color: var(--text-dim); }
.spec-table td:first-child { color: #fff; font-weight: 500; width: 35%; }

/* ====== 场景列表 ====== */
.use-case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.use-case-item {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: 12px; padding: 20px; font-size: 0.95rem; color: var(--text-dim);
}

/* ====== FAQ ====== */
.faq-item { border-bottom: 1px solid var(--glass-border); padding: 22px 0; }
.faq-item h3 { font-size: 1.05rem; color: #fff; margin-bottom: 10px; }
.faq-item p { color: var(--text-dim); font-size: 0.95rem; }

/* ====== 相关产品 ====== */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: 16px; overflow: hidden; transition: 0.3s;
}
.related-card:hover { border-color: rgba(168,85,247,0.3); transform: translateY(-4px); }
.related-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.related-card .rc-body { padding: 20px; }
.related-card h3 { font-size: 1rem; color: #fff; margin-bottom: 8px; }
.related-card p { font-size: 0.85rem; color: var(--text-faint); margin-bottom: 12px; }
.related-card .rc-price { color: #fff; font-weight: 700; margin-bottom: 12px; }

/* ====== 博客文章 ====== */
.article-header { max-width: 780px; margin: 0 auto; padding: 50px 6% 30px; position: relative; z-index: 1; }
.article-header .cat {
    display: inline-block; color: var(--neon-purple); font-size: 12px;
    text-transform: uppercase; letter-spacing: 2px; font-weight: 700; margin-bottom: 16px;
}
.article-header h1 { font-size: clamp(1.8rem, 4.5vw, 3rem); font-weight: 800; line-height: 1.2; letter-spacing: -1px; margin-bottom: 16px; }
.article-meta { color: var(--text-faint); font-size: 13px; }
.article-body { max-width: 780px; margin: 0 auto; padding: 20px 6% 60px; position: relative; z-index: 1; }
.article-body h2 { font-size: 1.6rem; color: #fff; font-weight: 700; margin: 40px 0 16px; }
.article-body h3 { font-size: 1.2rem; color: #fff; font-weight: 600; margin: 30px 0 12px; }
.article-body p { color: var(--text-dim); font-size: 1.02rem; margin-bottom: 18px; }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { color: var(--text-dim); font-size: 1rem; margin-bottom: 8px; }
.article-body .cta-box {
    background: linear-gradient(135deg, rgba(168,85,247,0.12), rgba(6,182,212,0.12));
    border: 1px solid rgba(168,85,247,0.3); border-radius: 16px;
    padding: 28px; margin: 30px 0; text-align: center;
}
.article-body .cta-box h3 { margin-top: 0; }
.article-body .cta-box p { color: #bbb; }
.article-body img { border-radius: 12px; margin: 24px 0; }

/* ====== 邮件订阅 ====== */
.newsletter-section { padding: 80px 6%; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); position: relative; z-index: 1; }
.newsletter-box { max-width: 560px; margin: 0 auto; }
.newsletter-box h3 { font-size: 1.6rem; color: #fff; margin-bottom: 12px; }
.newsletter-box p { color: #777; margin-bottom: 28px; font-size: 0.95rem; }
.newsletter-form { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.newsletter-form input[type="email"] {
    flex: 1; min-width: 240px; padding: 16px 20px; border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.04);
    color: #fff; font-size: 14px; outline: none; transition: 0.3s;
}
.newsletter-form input[type="email"]:focus { border-color: var(--neon-purple); }
.newsletter-form button {
    padding: 16px 32px; border-radius: 50px; border: none; cursor: pointer;
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
    color: #fff; font-weight: 600; font-size: 14px; transition: 0.3s;
}
.newsletter-form button:hover { box-shadow: 0 0 30px rgba(168,85,247,0.5); transform: translateY(-1px); }
.newsletter-note { color: #555; font-size: 12px; margin-top: 16px; }

/* ====== 页脚 ====== */
footer { padding: 80px 6% 40px; border-top: 1px solid rgba(255,255,255,0.05); color: #444; font-size: 13px; position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo {
    color: #fff; font-size: 20px; font-weight: 800; margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, var(--neon-purple));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.footer-grid h5 { color: #fff; margin-bottom: 20px; font-size: 14px; }
.footer-grid ul li { margin-bottom: 12px; }
.footer-grid ul li a { color: #555; }
.footer-grid ul li a:hover { color: #fff; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.05); color: #555; font-size: 12px; }

/* ====== 响应式 ====== */
@media (max-width: 900px) {
    .nav-links a:not(.btn-amazon) { display: none; }
    .product-hero { grid-template-columns: 1fr; gap: 30px; }
    .features-grid { grid-template-columns: 1fr; }
    .use-case-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}