/* ========================================
   东莞市鸿维新能源科技有限公司 - 官网样式 v2
   科技智能风格 | 深色主题 | 真实工厂图片
   ======================================== */

:root {
    --primary: #00d4ff;
    --primary-dark: #0099ff;
    --secondary: #7b2ff7;
    --accent: #00f5d4;
    --bg-deep: #020617;
    --bg-dark: #0a0e27;
    --bg-card: rgba(15, 23, 42, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

#particle-canvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.glass { background: var(--bg-glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--border); border-radius: 16px; }
.gradient-text { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 8px; font-size: 15px; font-weight: 500; text-decoration: none; cursor: pointer; transition: var(--transition); border: none; outline: none; }
.btn-primary { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4); }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--primary); background: rgba(0, 212, 255, 0.05); }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); padding: 10px 24px; }
.btn-outline:hover { background: rgba(0, 212, 255, 0.1); }
.btn-block { width: 100%; justify-content: center; }

/* 导航栏 */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 12px 0; transition: var(--transition); }
.navbar.scrolled { background: rgba(2, 6, 23, 0.95); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 8px 0; }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-avatar {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    border-radius: 10px;
    font-size: 15px; font-weight: 800; color: #fff;
    letter-spacing: 1px;
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 2px 10px rgba(0, 212, 255, 0.25);
    flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; }
.logo-main { font-size: 16px; font-weight: 700; color: var(--text-primary); letter-spacing: 1px; }
.logo-sub { font-size: 10px; color: var(--text-muted); letter-spacing: 1px; }
.nav-menu { display: flex; list-style: none; gap: 4px; }
.nav-link { display: block; padding: 8px 14px; color: var(--text-secondary); text-decoration: none; font-size: 13px; font-weight: 500; border-radius: 8px; transition: var(--transition); white-space: nowrap; }
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(0, 212, 255, 0.08); }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.cart-icon { position: relative; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 10px; cursor: pointer; transition: var(--transition); background: var(--bg-glass); border: 1px solid var(--border); }
.cart-icon:hover { border-color: var(--primary); background: rgba(0, 212, 255, 0.08); }
.cart-icon i { font-size: 16px; color: var(--text-primary); }
.cart-count { position: absolute; top: -4px; right: -4px; width: 18px; height: 18px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; font-size: 10px; font-weight: 600; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* Hero区域 - 左右布局 */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; padding: 120px 24px 80px; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 20%; left: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero-container { max-width: 1200px; margin: 0 auto; width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.hero-content { animation: fadeInUp 0.8s ease both; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 50px; font-size: 13px; color: var(--primary); margin-bottom: 24px; }
.hero-title { margin-bottom: 20px; }
.company-name { display: block; font-size: clamp(20px, 3vw, 28px); font-weight: 700; color: var(--text-primary); margin-bottom: 12px; letter-spacing: 2px; }
.hero-slogan { display: block; font-size: clamp(32px, 4.5vw, 52px); font-weight: 800; line-height: 1.2; }
.hero-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-item { padding: 16px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 12px; text-align: center; transition: var(--transition); }
.stat-item:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.stat-number { font-size: 28px; font-weight: 800; color: var(--primary); }
.stat-suffix { font-size: 18px; font-weight: 700; color: var(--primary); }
.stat-label { display: block; font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* Hero 工厂图片拼贴 */
.hero-visual { animation: fadeInUp 0.8s ease 0.2s both; }
.factory-collage { display: grid; grid-template-columns: 1.2fr 1fr; gap: 12px; height: 420px; }
.collage-main { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); }
.collage-main img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.collage-main:hover img { transform: scale(1.03); }
.collage-caption { position: absolute; bottom: 0; left: 0; right: 0; padding: 16px; background: linear-gradient(transparent, rgba(0,0,0,0.8)); font-size: 13px; font-weight: 500; color: #fff; }
.collage-side { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.collage-item { position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); cursor: pointer; }
.collage-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.collage-item:hover img { transform: scale(1.05); }
.collage-item span { position: absolute; bottom: 0; left: 0; right: 0; padding: 8px; background: linear-gradient(transparent, rgba(0,0,0,0.7)); font-size: 11px; color: #fff; text-align: center; }

.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-muted); font-size: 12px; animation: bounce 2s infinite; cursor: pointer; }

/* 区块标题 */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag { display: inline-block; padding: 6px 16px; background: rgba(0, 212, 255, 0.1); border: 1px solid rgba(0, 212, 255, 0.2); border-radius: 50px; font-size: 12px; font-weight: 600; color: var(--primary); letter-spacing: 2px; margin-bottom: 16px; }
.section-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--text-secondary); max-width: 500px; margin: 0 auto; }

/* 实体工厂 */
.factory { padding: 100px 0; position: relative; }
.factory-showcase { display: flex; flex-direction: column; gap: 24px; }
.factory-main { position: relative; border-radius: 20px; overflow: hidden; border: 1px solid var(--border); height: 360px; }
.factory-main img { width: 100%; height: 100%; object-fit: cover; }
.factory-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 40px; background: linear-gradient(transparent 0%, rgba(2,6,23,0.95) 100%); }
.factory-overlay h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.factory-overlay h3 i { color: var(--primary); }
.factory-overlay p { font-size: 14px; color: var(--text-secondary); }
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.factory-card { background: var(--bg-glass); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: var(--transition); }
.factory-card:hover { transform: translateY(-6px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.factory-img { height: 180px; overflow: hidden; }
.factory-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.factory-card:hover .factory-img img { transform: scale(1.05); }
.factory-info { padding: 20px; }
.factory-info h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.factory-info p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* 一站式服务 */
.onestop { padding: 100px 0; background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.02) 50%, transparent 100%); }
.onestop-content { display: grid; grid-template-columns: 320px 1fr; gap: 40px; align-items: start; }
.onestop-visual { position: sticky; top: 100px; }
.onestop-diagram { position: relative; width: 100%; aspect-ratio: 1; max-width: 400px; margin: 0 auto; }
.diagram-center { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 2; }
.center-ring { width: 120px; height: 120px; border-radius: 50%; background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 47, 247, 0.15)); border: 2px solid rgba(0, 212, 255, 0.3); display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: 0 0 40px rgba(0, 212, 255, 0.15), inset 0 0 20px rgba(0, 212, 255, 0.05); backdrop-filter: blur(10px); }
.center-title { font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: 2px; }
.center-sub { font-size: 10px; color: var(--text-secondary); margin-top: 2px; letter-spacing: 1px; }
.diagram-orbit { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 85%; height: 85%; border-radius: 50%; border: 1px dashed rgba(0, 212, 255, 0.2); }
.diagram-nodes { position: absolute; inset: 0; }
.d-node { position: absolute; top: 50%; left: 50%; width: 72px; margin-left: -36px; margin-top: -36px; display: flex; flex-direction: column; align-items: center; gap: 4px; text-align: center; transform: rotate(var(--angle)) translateX(-170px) rotate(calc(var(--angle) * -1)); }
.d-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); border-radius: 10px; color: #fff; font-size: 14px; box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3); }
.d-node span { font-size: 11px; font-weight: 500; color: var(--text-primary); white-space: nowrap; text-shadow: 0 1px 4px rgba(0,0,0,0.8); }
.onestop-flow { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.flow-step { flex: 1; min-width: 140px; max-width: 160px; padding: 20px 16px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 14px; text-align: center; transition: var(--transition); position: relative; }
.flow-step:hover { border-color: rgba(0, 212, 255, 0.4); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.flow-num { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 50px; }
.flow-icon { width: 44px; height: 44px; margin: 8px auto 12px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1)); border-radius: 12px; border: 1px solid rgba(0, 212, 255, 0.2); }
.flow-icon i { font-size: 18px; color: var(--primary); }
.flow-step h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.flow-step p { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.flow-arrow { color: var(--primary); font-size: 14px; opacity: 0.6; }

/* 硬件开发 */
.hardware { padding: 100px 0; }
.hardware-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 40px; }
.hardware-card { padding: 28px 20px; text-align: center; transition: var(--transition); }
.hardware-card:hover { transform: translateY(-6px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.hw-icon { width: 56px; height: 56px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1)); border-radius: 14px; border: 1px solid rgba(0, 212, 255, 0.2); }
.hw-icon i { font-size: 24px; color: var(--primary); }
.hardware-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.hardware-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.hardware-promise { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.promise-item { display: flex; align-items: center; gap: 8px; padding: 10px 24px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 50px; font-size: 14px; color: var(--text-secondary); transition: var(--transition); }
.promise-item i { color: var(--primary); }
.promise-item.highlight { background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1)); border-color: rgba(0, 212, 255, 0.3); color: var(--primary); font-weight: 600; }
.promise-item:hover { border-color: var(--primary); transform: translateY(-2px); }

/* 核心服务 */
.services { padding: 100px 0; background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.02) 50%, transparent 100%); }
.services-wrapper { display: flex; flex-direction: column; gap: 80px; }
.service-item { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.service-item.reverse { direction: rtl; }
.service-item.reverse > * { direction: ltr; }
.service-visual { display: flex; justify-content: center; }
.service-img-wrapper { width: 100%; max-width: 420px; border-radius: 20px; overflow: hidden; border: 1px solid var(--border); position: relative; }
.service-img-wrapper::before { content: ''; position: absolute; inset: 0; border-radius: 20px; padding: 2px; background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; z-index: 1; pointer-events: none; }
.service-img-wrapper img { width: 100%; height: 280px; object-fit: cover; display: block; transition: var(--transition); }
.service-img-wrapper:hover img { transform: scale(1.03); }
.service-tag { display: inline-block; font-size: 12px; color: var(--primary); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.service-content h3 { font-size: 30px; font-weight: 700; margin-bottom: 16px; }
.service-content p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }
.service-features { list-style: none; margin-bottom: 28px; }
.service-features li { display: flex; align-items: center; gap: 12px; padding: 8px 0; color: var(--text-secondary); font-size: 15px; }
.service-features i { color: var(--accent); font-size: 12px; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; background: rgba(0, 245, 212, 0.1); border-radius: 50%; }

/* 交易流程 */
.process { padding: 100px 0; }
.process-grid { display: flex; align-items: stretch; gap: 16px; }
.process-card { flex: 1; padding: 32px 24px; text-align: center; transition: var(--transition); position: relative; }
.process-card:hover { transform: translateY(-6px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.process-num { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; font-size: 14px; font-weight: 700; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3); }
.process-card h4 { font-size: 17px; font-weight: 600; margin: 16px 0 12px; display: flex; align-items: center; justify-content: center; gap: 8px; }
.process-card h4 i { color: var(--primary); font-size: 16px; }
.process-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.process-arrow { display: flex; align-items: center; color: var(--primary); font-size: 20px; opacity: 0.5; padding-top: 30px; }

/* 产品商城 */
.shop { padding: 100px 0; }
.shop-filter { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn { padding: 10px 24px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 8px; color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: var(--transition); }
.filter-btn:hover, .filter-btn.active { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); border-color: transparent; color: #fff; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.product-card { background: var(--bg-glass); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: var(--transition); cursor: pointer; }
.product-card:hover { transform: translateY(-8px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.product-image { height: 200px; position: relative; overflow: hidden; background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(123, 47, 247, 0.05)); display: flex; align-items: center; justify-content: center; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.product-card:hover .product-image img { transform: scale(1.05); }
.product-badge { position: absolute; top: 12px; left: 12px; padding: 4px 12px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; font-size: 11px; font-weight: 600; border-radius: 50px; }
.product-info { padding: 20px; }
.product-category { font-size: 12px; color: var(--primary); letter-spacing: 1px; margin-bottom: 8px; }
.product-name { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.product-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-size: 20px; font-weight: 700; color: var(--primary); }
.product-price .unit { font-size: 12px; color: var(--text-muted); font-weight: 400; }
.btn-add-cart { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; border: none; border-radius: 8px; cursor: pointer; transition: var(--transition); }
.btn-add-cart:hover { transform: scale(1.1); box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4); }

/* 联系我们 */
.contact { padding: 100px 0; background: linear-gradient(180deg, transparent 0%, rgba(123, 47, 247, 0.02) 50%, transparent 100%); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-visual { display: flex; flex-direction: column; gap: 24px; }
.contact-front { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); }
.contact-front img { width: 100%; height: 220px; object-fit: cover; display: block; }
.front-caption { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; background: linear-gradient(transparent, rgba(2,6,23,0.95)); }
.front-caption h4 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.front-caption p { font-size: 13px; color: var(--text-secondary); }
.contact-info { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-card { padding: 20px; display: flex; align-items: flex-start; gap: 14px; transition: var(--transition); }
.contact-card:hover { border-color: rgba(0, 212, 255, 0.3); transform: translateY(-4px); }
.contact-icon { width: 44px; height: 44px; min-width: 44px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1)); border-radius: 10px; border: 1px solid rgba(0, 212, 255, 0.2); }
.contact-icon i { font-size: 18px; color: var(--primary); }
.contact-detail h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.contact-detail p, .contact-detail a { font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: var(--transition); }
.contact-detail a:hover { color: var(--primary); }
.contact-form-wrapper { padding: 32px; }
.contact-form-wrapper h3 { font-size: 20px; font-weight: 600; margin-bottom: 24px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: var(--text-secondary); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--border); border-radius: 8px; color: var(--text-primary); font-size: 14px; transition: var(--transition); outline: none; font-family: inherit; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); background: rgba(0, 212, 255, 0.03); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group select option { background: var(--bg-dark); color: var(--text-primary); }

/* 页脚 */
.footer { padding: 60px 0 0; border-top: 1px solid var(--border); background: rgba(0, 0, 0, 0.2); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.footer-links h4, .footer-contact h4 { font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact p { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }
.footer-contact i { color: var(--primary); width: 16px; }
.footer-bottom { padding: 20px 0; border-top: 1px solid var(--border); text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); }

/* 购物车 */
.cart-sidebar { position: fixed; top: 0; right: -420px; width: 400px; max-width: 100%; height: 100vh; background: var(--bg-dark); border-left: 1px solid var(--border); z-index: 2000; display: flex; flex-direction: column; transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.cart-sidebar.open { right: 0; }
.cart-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.cart-header h3 { font-size: 18px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.cart-close { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 8px; color: var(--text-primary); cursor: pointer; transition: var(--transition); }
.cart-close:hover { border-color: #ef4444; color: #ef4444; }
.cart-body { flex: 1; overflow-y: auto; padding: 20px; }
.cart-empty { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.cart-empty i { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.cart-empty p { font-size: 16px; margin-bottom: 8px; }
.cart-empty span { font-size: 13px; }
.cart-item { display: flex; gap: 16px; padding: 16px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; }
.cart-item-img { width: 60px; height: 60px; min-width: 60px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(123, 47, 247, 0.08)); border-radius: 10px; overflow: hidden; }
.cart-item-img img { width: 100%; height: 100%; object-fit: cover; }
.cart-item-info { flex: 1; }
.cart-item-name { font-size: 14px; font-weight: 500; margin-bottom: 4px; }
.cart-item-price { font-size: 14px; color: var(--primary); font-weight: 600; }
.cart-item-qty { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.qty-btn { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 4px; color: var(--text-primary); cursor: pointer; font-size: 12px; transition: var(--transition); }
.qty-btn:hover { border-color: var(--primary); }
.cart-item-qty span { font-size: 13px; min-width: 20px; text-align: center; }
.cart-item-remove { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-muted); cursor: pointer; border-radius: 4px; transition: var(--transition); align-self: flex-start; }
.cart-item-remove:hover { color: #ef4444; background: rgba(239, 68, 68, 0.1); }
.cart-footer { padding: 20px 24px; border-top: 1px solid var(--border); }
.cart-total { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-size: 16px; }
.total-price { font-size: 24px; font-weight: 700; color: var(--primary); }
.cart-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px); z-index: 1999; opacity: 0; visibility: hidden; transition: var(--transition); }
.cart-overlay.open { opacity: 1; visibility: visible; }

/* 智能客服 */
.chat-widget { position: fixed; bottom: 30px; right: 30px; z-index: 3000; }
.chat-button { width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4); transition: var(--transition); position: relative; }
.chat-button:hover { transform: scale(1.1); box-shadow: 0 6px 30px rgba(0, 212, 255, 0.5); }
.chat-button i { font-size: 24px; color: #fff; }
.chat-badge { position: absolute; top: -2px; right: -2px; width: 20px; height: 20px; background: #ef4444; color: #fff; font-size: 11px; font-weight: 600; border-radius: 50%; display: flex; align-items: center; justify-content: center; animation: pulse 2s infinite; }
.chat-panel { position: absolute; bottom: 80px; right: 0; width: 360px; max-width: calc(100vw - 40px); background: var(--bg-dark); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(20px) scale(0.95); transition: var(--transition); }
.chat-panel.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.chat-header { display: flex; align-items: center; gap: 12px; padding: 16px 20px; background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1)); border-bottom: 1px solid var(--border); }
.chat-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; }
.chat-avatar i { font-size: 18px; color: #fff; }
.chat-info { flex: 1; }
.chat-info h4 { font-size: 15px; font-weight: 600; }
.chat-info span { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.chat-info .online { color: #22c55e; font-size: 8px; }
.chat-minimize { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-secondary); cursor: pointer; border-radius: 8px; transition: var(--transition); }
.chat-minimize:hover { background: var(--bg-glass); color: var(--text-primary); }
.chat-body { height: 320px; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.chat-message { display: flex; flex-direction: column; gap: 4px; max-width: 85%; }
.chat-message.user { align-self: flex-end; align-items: flex-end; }
.chat-message.bot { align-self: flex-start; align-items: flex-start; }
.chat-bubble { padding: 12px 16px; border-radius: 16px; font-size: 14px; line-height: 1.6; }
.chat-message.user .chat-bubble { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; border-bottom-right-radius: 4px; }
.chat-message.bot .chat-bubble { background: var(--bg-glass); border: 1px solid var(--border); color: var(--text-primary); border-bottom-left-radius: 4px; }
.chat-time { font-size: 11px; color: var(--text-muted); }
.chat-suggestions { padding: 0 16px 12px; display: flex; flex-wrap: wrap; gap: 8px; border-bottom: 1px solid var(--border); }
.suggestion-btn { padding: 6px 14px; background: rgba(0, 212, 255, 0.08); border: 1px solid rgba(0, 212, 255, 0.2); border-radius: 50px; color: var(--primary); font-size: 12px; cursor: pointer; transition: var(--transition); }
.suggestion-btn:hover { background: rgba(0, 212, 255, 0.15); }
.chat-input-area { display: flex; gap: 8px; padding: 12px 16px; background: rgba(0, 0, 0, 0.2); }
.chat-input { flex: 1; padding: 10px 16px; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 12px; color: var(--text-primary); font-size: 14px; outline: none; transition: var(--transition); }
.chat-input:focus { border-color: var(--primary); }
.chat-input::placeholder { color: var(--text-muted); }
.chat-send { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); border: none; border-radius: 12px; color: #fff; cursor: pointer; transition: var(--transition); }
.chat-send:hover { transform: scale(1.05); box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3); }

/* 弹窗 */
.modal { position: fixed; inset: 0; z-index: 4000; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(8px); opacity: 0; visibility: hidden; transition: var(--transition); }
.modal.open { opacity: 1; visibility: visible; }
.modal-content { width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; padding: 32px; position: relative; transform: scale(0.9); transition: transform 0.3s ease; }
.modal.open .modal-content { transform: scale(1); }
.modal-close { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-glass); border: 1px solid var(--border); border-radius: 8px; color: var(--text-primary); cursor: pointer; transition: var(--transition); }
.modal-close:hover { border-color: #ef4444; color: #ef4444; }
.modal-product { text-align: center; }
.modal-product .product-image { height: 240px; border-radius: 16px; margin-bottom: 24px; overflow: hidden; }
.modal-product .product-image img { width: 100%; height: 100%; object-fit: cover; }
.modal-product h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.modal-product .modal-desc { color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; text-align: left; }
.modal-product .modal-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 24px; }
.modal-meta-item { padding: 12px; background: var(--bg-glass); border-radius: 10px; text-align: left; }
.modal-meta-item span { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 4px; }
.modal-meta-item strong { font-size: 14px; color: var(--text-primary); }
.modal-product .modal-price { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 20px; }

/* 动画 */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-10px); } 60% { transform: translateX(-50%) translateY(-5px); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { order: -1; }
    .factory-collage { height: 320px; }
    .factory-grid { grid-template-columns: repeat(2, 1fr); }
    .onestop-content { grid-template-columns: 1fr; }
    .onestop-visual { position: static; max-width: 400px; margin: 0 auto; }
    .hardware-grid { grid-template-columns: repeat(2, 1fr); }
    .service-item, .service-item.reverse { grid-template-columns: 1fr; direction: ltr; gap: 40px; }
    .service-item.reverse > * { direction: ltr; }
    .service-visual { order: -1; }
    .process-grid { flex-wrap: wrap; }
    .process-card { min-width: 200px; }
    .process-arrow { display: none; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu { position: fixed; top: 70px; left: 0; right: 0; background: rgba(2, 6, 23, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: var(--transition); }
    .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
    .hamburger { display: flex; }
    .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .factory-grid { grid-template-columns: 1fr; }
    .factory-main { height: 240px; }
    .hardware-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .contact-info { grid-template-columns: 1fr; }
    .contact-form .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .hero-buttons { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
    .chat-panel { width: calc(100vw - 40px); right: -10px; }
    .cart-sidebar { width: 100%; right: -100%; }
    .onestop-flow { justify-content: center; }
    .flow-step { min-width: 120px; max-width: none; flex: 1 1 120px; }
    .flow-arrow.desktop-only { display: none; }
    .d-node { transform: rotate(var(--angle)) translateX(-130px) rotate(calc(var(--angle) * -1)); }
    .center-ring { width: 90px; height: 90px; }
    .center-title { font-size: 16px; }
    .center-sub { font-size: 9px; }
    .d-icon { width: 32px; height: 32px; font-size: 12px; }
    .d-node span { font-size: 10px; }
}

@media (max-width: 480px) {
    .company-name { font-size: 16px; }
    .hero-slogan { font-size: 26px; }
    .factory-collage { grid-template-columns: 1fr; height: auto; }
    .collage-main { height: 200px; }
    .collage-side { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 26px; }
    .stat-number { font-size: 22px; }
    .service-img-wrapper img { height: 200px; }
    .promise-item { font-size: 12px; padding: 8px 16px; }
    .d-node { transform: rotate(var(--angle)) translateX(-100px) rotate(calc(var(--angle) * -1)); width: 60px; margin-left: -30px; margin-top: -30px; }
    .center-ring { width: 80px; height: 80px; }
    .center-title { font-size: 14px; }
    .d-icon { width: 28px; height: 28px; font-size: 10px; }
    .d-node span { font-size: 9px; }
}