/* ===== 基础样式 ===== */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #06b6d4;
    --accent: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f8fafc;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #06b6d4 100%);
    --ai-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 10px 40px rgba(79, 70, 229, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif; line-height: 1.6; color: var(--dark); background: var(--white); }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 按钮样式 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 28px; border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; border: none; }
.btn-primary { background: var(--gradient); color: var(--white); box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4); }
.btn-secondary { background: rgba(255,255,255,0.15); color: var(--white); border: 1px solid rgba(255,255,255,0.3); backdrop-filter: blur(10px); }
.btn-secondary:hover { background: rgba(255,255,255,0.25); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }

/* ===== 顶部公告栏 ===== */
.top-bar { background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%); color: var(--white); padding: 8px 0; font-size: 13px; }
.top-bar-content { display: flex; justify-content: space-between; align-items: center; }
.top-bar-content span i { margin-right: 8px; }
.top-bar-links { display: flex; gap: 24px; }
.top-bar-links a { display: flex; align-items: center; gap: 6px; opacity: 0.95; }
.top-bar-links a:hover { opacity: 1; }

/* ===== 导航栏 ===== */
.navbar { position: fixed; top: 36px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); z-index: 1000; box-shadow: 0 4px 30px rgba(0,0,0,0.06); transition: all 0.3s; }
.nav-main { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 42px; height: 42px; background: var(--gradient); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 800; color: var(--white); font-size: 14px; }
.logo-icon .accent { color: #fbbf24; }
.logo-text .company { font-size: 20px; font-weight: 700; color: var(--dark); display: block; }
.logo-text .en { font-size: 10px; color: var(--gray); letter-spacing: 2px; }
.nav-links { display: flex; gap: 8px; }
.nav-item { position: relative; }
.nav-item > a { display: flex; align-items: center; gap: 4px; padding: 10px 16px; font-size: 15px; font-weight: 500; color: var(--dark); border-radius: 8px; transition: all 0.3s; }
.nav-item > a:hover, .nav-item.active > a { color: var(--primary); background: rgba(79,70,229,0.05); }
.nav-item > a i { font-size: 11px; transition: transform 0.3s; }
.dropdown-menu { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px); background: var(--white); border-radius: 12px; box-shadow: 0 20px 50px rgba(0,0,0,0.15); padding: 12px; min-width: 200px; opacity: 0; visibility: hidden; transition: all 0.3s; }
.nav-item.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown-menu a { display: flex; align-items: center; gap: 10px; padding: 10px 16px; font-size: 14px; color: var(--dark); border-radius: 8px; transition: all 0.2s; }
.dropdown-menu a:hover { background: rgba(79,70,229,0.08); color: var(--primary); }
.dropdown-menu a i { color: var(--primary); width: 18px; }
.btn-consultation { background: var(--primary); color: var(--white); padding: 10px 24px; border-radius: 8px; font-weight: 600; font-size: 14px; transition: all 0.3s; }
.btn-consultation:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(79,70,229,0.3); }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 24px; color: var(--dark); cursor: pointer; }

/* 移动端菜单 */
.mobile-nav { position: fixed; top: 0; right: -100%; width: 80%; max-width: 320px; height: 100vh; background: var(--white); z-index: 1001; transition: right 0.3s ease; box-shadow: -10px 0 30px rgba(0,0,0,0.1); }
.mobile-nav.active { right: 0; }
.mobile-nav-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; border-bottom: 1px solid #e2e8f0; }
.mobile-nav-header span { font-size: 18px; font-weight: 600; }
.mobile-close { background: none; border: none; font-size: 24px; color: var(--gray); cursor: pointer; }
.mobile-nav-links { padding: 20px; }
.mobile-nav-links li { border-bottom: 1px solid #f1f5f9; }
.mobile-nav-links a { display: block; padding: 16px 0; font-size: 16px; font-weight: 500; }
.mobile-nav-footer { padding: 20px; }
.btn-call { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 14px; background: var(--primary); color: var(--white); border-radius: 10px; font-weight: 600; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: all 0.3s; }
.modal-overlay.active { opacity: 1; visibility: visible; }

/* ===== Hero 区域 ===== */
.hero { min-height: 100vh; background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%); display: flex; align-items: center; padding-top: 108px; position: relative; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-particles { position: absolute; inset: 0; background-image: radial-gradient(circle at 1px 1px, rgba(79,70,229,0.15) 1px, transparent 0); background-size: 40px 40px; }
.hero .container { display: flex; align-items: center; justify-content: space-between; gap: 60px; position: relative; z-index: 1; }
.hero-content { flex: 1; color: var(--white); max-width: 600px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(79,70,229,0.2); border: 1px solid rgba(79,70,229,0.3); border-radius: 50px; font-size: 13px; margin-bottom: 24px; }
.badge-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.hero-content h1 { font-size: 52px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; background: linear-gradient(135deg, #fff 0%, #c7d2fe 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 20px; color: #c7d2fe; margin-bottom: 12px; }
.hero-desc { font-size: 16px; color: #94a3b8; margin-bottom: 32px; }
.hero-features { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }
.feature-tag { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.2); border-radius: 50px; font-size: 14px; color: #10b981; }
.hero-buttons { display: flex; gap: 16px; }
.hero-visual { flex: 1; display: flex; justify-content: center; }
.hero-cards { display: flex; flex-direction: column; gap: 16px; }
.hero-card { display: flex; align-items: center; gap: 16px; padding: 20px 24px; background: rgba(255,255,255,0.05); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.1); border-radius: 16px; transition: all 0.3s; }
.hero-card:hover { background: rgba(255,255,255,0.1); transform: translateX(10px); }
.hero-card .card-icon { width: 48px; height: 48px; background: var(--gradient); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--white); }
.hero-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.hero-card p { font-size: 13px; color: #94a3b8; }
.hero-scroll { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: #64748b; font-size: 13px; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(10px); } }

/* ===== AI特色横幅 ===== */
.ai-features-banner { background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--secondary) 100%); padding: 24px 0; }
.ai-features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.ai-feature-item { display: flex; align-items: center; gap: 16px; color: var(--white); }
.ai-feature-item i { font-size: 32px; opacity: 0.9; }
.ai-feature-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.ai-feature-item p { font-size: 13px; opacity: 0.85; }

/* ===== 合作伙伴滚动 ===== */


/* ===== 通用标题 ===== */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag { display: inline-block; padding: 6px 16px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 13px; font-weight: 600; border-radius: 50px; margin-bottom: 16px; }
.section-header h2 { font-size: 40px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.section-header p { font-size: 18px; color: var(--gray); max-width: 600px; margin: 0 auto; }
.section-header.light h2, .section-header.light p { color: var(--white); }

/* ===== AI与云服务区域 ===== */
.ai-cloud-section { padding: 100px 0; background: linear-gradient(180deg, #f8fafc 0%, #fff 100%); }

/* AI大模型卡片 */
.ai-solution-card { background: var(--white); border-radius: 24px; padding: 40px; box-shadow: 0 4px 30px rgba(0,0,0,0.08); margin-bottom: 40px; }
.ai-card-header { display: flex; align-items: center; gap: 20px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid #e2e8f0; }
.ai-card-icon { width: 64px; height: 64px; background: var(--ai-gradient); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--white); flex-shrink: 0; }
.ai-card-title { flex: 1; }
.ai-card-title h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.ai-card-title p { font-size: 15px; color: var(--gray); }
.ai-badge { padding: 6px 16px; background: linear-gradient(135deg, #f59e0b, #f97316); color: var(--white); font-size: 12px; font-weight: 600; border-radius: 20px; }

.ai-features-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 32px; }
.ai-feature-box { padding: 24px; background: var(--light); border-radius: 16px; text-align: center; transition: all 0.3s; }
.ai-feature-box:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(79,70,229,0.1); }
.ai-feature-box .ai-feature-icon { width: 56px; height: 56px; background: var(--ai-gradient); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--white); margin: 0 auto 16px; }
.ai-feature-box h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.ai-feature-box p { font-size: 13px; color: var(--gray); line-height: 1.6; }

.ai-models-support { margin-bottom: 32px; }
.ai-models-support h4 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.model-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.model-tag { padding: 8px 16px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 13px; font-weight: 500; border-radius: 20px; }

.ai-pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ai-pricing-item { padding: 32px; background: var(--light); border-radius: 20px; text-align: center; position: relative; }
.ai-pricing-item.popular { background: rgba(79,70,229,0.08); border: 2px solid var(--primary); }
.ai-pricing-item h4 { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.ai-pricing-item .price { margin-bottom: 20px; }
.ai-pricing-item .price-num { font-size: 32px; font-weight: 800; color: var(--dark); }
.ai-pricing-item .price-unit { font-size: 14px; color: var(--gray); }
.ai-pricing-item ul { text-align: left; margin-bottom: 24px; }
.ai-pricing-item ul li { padding: 8px 0; font-size: 14px; color: var(--gray); display: flex; align-items: center; gap: 10px; }
.ai-pricing-item ul li i { color: var(--success); }
.popular-tag { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); padding: 4px 16px; background: var(--primary); color: var(--white); font-size: 12px; font-weight: 600; border-radius: 10px; }

/* 域名服务卡片 */
.domain-card { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 24px; padding: 40px; color: var(--white); margin-bottom: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.domain-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.domain-icon { font-size: 40px; opacity: 0.9; }
.domain-header h3 { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.domain-header p { font-size: 14px; opacity: 0.85; }
.domain-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 24px; }
.domain-feature { display: flex; align-items: center; gap: 12px; padding: 16px; background: rgba(255,255,255,0.1); border-radius: 12px; }
.domain-feature i { font-size: 24px; opacity: 0.9; }
.domain-feature span { font-size: 14px; font-weight: 600; display: block; }
.domain-feature p { font-size: 12px; opacity: 0.75; }
.domain-prices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.domain-price-item { padding: 16px; background: rgba(255,255,255,0.15); border-radius: 12px; text-align: center; position: relative; }
.domain-price-item.highlight { background: rgba(255,255,255,0.25); border: 1px solid rgba(255,255,255,0.3); }
.domain-price-item .tld { font-size: 18px; font-weight: 700; display: block; }
.domain-price-item .price { font-size: 14px; opacity: 0.9; }
.domain-price-item .tag { position: absolute; top: -8px; right: -8px; padding: 2px 8px; background: #f59e0b; font-size: 10px; font-weight: 600; border-radius: 10px; }

.domain-search { background: rgba(255,255,255,0.1); border-radius: 16px; padding: 32px; backdrop-filter: blur(10px); }
.domain-search h4 { font-size: 18px; font-weight: 600; margin-bottom: 20px; text-align: center; }
.search-box { display: flex; gap: 12px; }
.search-box input { flex: 1; padding: 14px 20px; border: none; border-radius: 10px; font-size: 15px; background: var(--white); color: var(--dark); }
.search-box input::placeholder { color: #94a3b8; }
.search-box .btn { padding: 14px 24px; white-space: nowrap; }
.search-result { margin-top: 20px; }
.search-result:empty { display: none; }

/* 云主机卡片 */
.host-section { margin-bottom: 40px; }
.host-header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
.host-icon { width: 56px; height: 56px; background: var(--gradient); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--white); }
.host-header h3 { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.host-header p { font-size: 14px; color: var(--gray); }

.host-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.host-card { background: var(--white); border-radius: 20px; padding: 32px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); border: 1px solid #e2e8f0; transition: all 0.3s; }
.host-card:hover { transform: translateY(-5px); box-shadow: 0 15px 40px rgba(0,0,0,0.1); }
.host-card.popular { border-color: var(--primary); box-shadow: 0 10px 40px rgba(79,70,229,0.15); }
.host-card-header { margin-bottom: 24px; }
.host-badge { display: inline-block; padding: 4px 12px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 11px; font-weight: 600; border-radius: 20px; margin-bottom: 8px; }
.host-card h4 { font-size: 18px; font-weight: 600; }
.host-specs { margin-bottom: 24px; }
.host-specs .spec-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #f1f5f9; font-size: 13px; }
.host-specs .spec-row span:first-child { color: var(--gray); }
.host-specs .spec-row span:last-child { font-weight: 600; }
.host-price { font-size: 28px; font-weight: 800; color: var(--dark); margin-bottom: 20px; }
.host-price span { font-size: 14px; font-weight: 400; color: var(--gray); }
.host-card .btn { width: 100%; }

/* 部署运维 */
.deploy-section { background: var(--white); border-radius: 20px; padding: 32px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); }
.deploy-content h3 { font-size: 20px; font-weight: 600; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.deploy-content h3 i { color: var(--primary); font-size: 24px; }
.deploy-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.deploy-feature { display: flex; gap: 12px; padding: 20px; background: var(--light); border-radius: 12px; }
.deploy-feature i { font-size: 28px; color: var(--primary); flex-shrink: 0; }
.deploy-feature h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.deploy-feature p { font-size: 12px; color: var(--gray); }

/* ===== 解决方案 ===== */
.solutions { padding: 100px 0; background: var(--light); }
.solutions-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 48px; }
.solution-tab { display: flex; align-items: center; gap: 8px; padding: 14px 28px; background: var(--white); border: 2px solid transparent; border-radius: 12px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s; color: var(--gray); }
.solution-tab i { font-size: 18px; }
.solution-tab:hover { border-color: var(--primary); color: var(--primary); }
.solution-tab.active { background: var(--primary); color: var(--white); border-color: var(--primary); }
.solution-panel { display: none; }
.solution-panel.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.solution-content { display: flex; gap: 60px; align-items: center; background: var(--white); border-radius: 24px; padding: 48px; box-shadow: 0 4px 30px rgba(0,0,0,0.05); }
.solution-content.reverse { flex-direction: row-reverse; }
.solution-text { flex: 1; }
.solution-text h3 { font-size: 28px; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.solution-desc { font-size: 16px; color: var(--gray); margin-bottom: 32px; }
.solution-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 32px; }
.solution-feature { display: flex; gap: 12px; }
.solution-feature i { width: 40px; height: 40px; background: rgba(79,70,229,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 16px; flex-shrink: 0; }
.solution-feature h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.solution-feature p { font-size: 13px; color: var(--gray); }
.solution-pricing { display: flex; gap: 16px; margin-bottom: 28px; }
.pricing-item { flex: 1; padding: 16px; background: var(--light); border-radius: 12px; text-align: center; position: relative; }
.pricing-item.popular { background: rgba(79,70,229,0.08); border: 2px solid var(--primary); }
.pricing-label { font-size: 13px; color: var(--gray); display: block; margin-bottom: 8px; }
.pricing-price { font-size: 20px; font-weight: 700; color: var(--dark); }
.pricing-price span { font-size: 12px; font-weight: 400; color: var(--gray); }
.pricing-tag { position: absolute; top: -10px; right: 16px; padding: 4px 12px; background: var(--primary); color: var(--white); font-size: 11px; border-radius: 10px; }
.solution-actions { display: flex; gap: 12px; }
.solution-image { flex: 1; display: flex; justify-content: center; }

/* 手机框架 */
.phone-mockup { width: 280px; height: 520px; background: #1a1a1a; border-radius: 36px; padding: 10px; box-shadow: 0 25px 60px rgba(0,0,0,0.3); position: relative; }
.phone-mockup::before { content: ''; position: absolute; top: 16px; left: 50%; transform: translateX(-50%); width: 60px; height: 20px; background: #1a1a1a; border-radius: 10px; z-index: 10; }
.mockup-screen { background: #f8fafc; height: 100%; border-radius: 28px; overflow: hidden; }
.mall-home { height: 100%; display: flex; flex-direction: column; }
.mall-header { display: flex; justify-content: space-between; align-items: center; padding: 40px 16px 12px; }
.mall-search { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: #fff; border-radius: 20px; flex: 1; margin-right: 12px; }
.mall-search i { color: var(--gray); }
.mall-search span { font-size: 13px; color: #94a3b8; }
.mall-header > i { color: var(--gray); }
.mall-banner { height: 100px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); margin: 0 16px; border-radius: 12px; }
.mall-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; padding: 16px; }
.mall-cat { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.mall-cat i { width: 40px; height: 40px; background: rgba(79,70,229,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: var(--primary); }
.mall-cat span { font-size: 11px; color: var(--dark); }
.mall-products { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0 16px; flex: 1; }
.mall-product { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.product-img { height: 70px; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); }
.product-name { font-size: 12px; font-weight: 500; padding: 8px 8px 4px; }
.product-price { font-size: 14px; color: #ef4444; font-weight: 700; padding: 0 8px 8px; }

/* 点餐预览 */
.restaurant-home { height: 100%; display: flex; flex-direction: column; }
.res-header { padding: 40px 16px 12px; background: linear-gradient(135deg, #ff6b6b, #ee5a24); color: #fff; text-align: center; }
.res-logo { width: 50px; height: 50px; background: rgba(255,255,255,0.2); border-radius: 50%; margin: 0 auto 8px; }
.res-header h4 { font-size: 16px; margin-bottom: 4px; }
.res-header p { font-size: 12px; opacity: 0.9; }
.res-tabs { display: flex; padding: 12px 16px; gap: 16px; border-bottom: 1px solid #e2e8f0; }
.res-tabs span { font-size: 13px; color: var(--gray); padding-bottom: 8px; border-bottom: 2px solid transparent; }
.res-tabs span.active { color: #ef4444; border-color: #ef4444; }
.res-menu { flex: 1; padding: 12px 16px; padding-bottom: 60px; overflow-y: auto; }
.menu-item { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid #f1f5f9; position: relative; }
.menu-img { width: 56px; height: 56px; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); border-radius: 8px; flex-shrink: 0; }
.menu-name { font-size: 14px; font-weight: 600; }
.menu-sales { font-size: 11px; color: var(--gray); margin: 2px 0; }
.menu-price { font-size: 14px; color: #ef4444; font-weight: 700; }
.menu-action { position: absolute; right: 0; bottom: 12px; display: flex; align-items: center; gap: 8px; }
.menu-action span { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; font-size: 13px; border-radius: 50%; }
.menu-action .minus, .menu-action .plus { background: #f1f5f9; cursor: pointer; }
.res-cart { position: absolute; bottom: 0; left: 0; right: 0; height: 50px; background: #1a1a1a; display: flex; align-items: center; padding: 0 16px; }
.cart-info { position: relative; color: #fff; font-size: 20px; }
.cart-count { position: absolute; top: -8px; right: -8px; width: 16px; height: 16px; background: #ef4444; border-radius: 50%; font-size: 10px; display: flex; align-items: center; justify-content: center; }
.cart-price { flex: 1; text-align: center; color: #fff; font-weight: 600; }
.cart-btn { background: #22c55e; color: #fff; padding: 8px 16px; border-radius: 20px; font-size: 12px; font-weight: 600; }

/* 管理后台预览 */
.admin-mockup { width: 100%; max-width: 400px; height: 300px; background: #f1f5f9; border-radius: 12px; overflow: hidden; box-shadow: 0 15px 40px rgba(0,0,0,0.15); }
.mockup-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: #fff; border-bottom: 1px solid #e2e8f0; }
.header-left { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; }
.header-left i { color: var(--primary); }
.header-right { display: flex; align-items: center; gap: 12px; }
.header-right i { color: var(--gray); }
.admin-avatar { width: 28px; height: 28px; background: var(--gradient); border-radius: 50%; }
.admin-body { display: flex; height: calc(100% - 52px); }
.admin-sidebar { width: 48px; background: #1e293b; padding: 12px 0; }
.sidebar-item { width: 100%; height: 32px; display: flex; align-items: center; justify-content: center; color: #64748b; font-size: 14px; margin-bottom: 8px; cursor: pointer; }
.sidebar-item.active { color: #fff; background: rgba(79,70,229,0.3); }
.admin-content { flex: 1; padding: 12px; overflow: hidden; }
.admin-stats { display: flex; gap: 12px; margin-bottom: 12px; }
.admin-stat { flex: 1; background: #fff; padding: 12px; border-radius: 8px; display: flex; gap: 10px; }
.stat-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; }
.stat-icon.red { background: linear-gradient(135deg, #ef4444, #f97316); }
.stat-icon.blue { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.stat-icon.green { background: linear-gradient(135deg, #10b981, #22c55e); }
.stat-icon.orange { background: linear-gradient(135deg, #f59e0b, #f97316); }
.stat-value { font-size: 14px; font-weight: 700; }
.stat-label { font-size: 10px; color: var(--gray); }
.admin-chart { background: #fff; padding: 12px; border-radius: 8px; margin-bottom: 12px; }
.chart-header { display: flex; justify-content: space-between; margin-bottom: 12px; font-size: 12px; font-weight: 600; }
.chart-bars { display: flex; align-items: flex-end; gap: 6px; height: 60px; }
.bar { width: 20px; background: linear-gradient(180deg, var(--primary), rgba(79,70,229,0.2)); border-radius: 4px 4px 0 0; }
.bar.active { background: linear-gradient(180deg, var(--secondary), rgba(6,182,212,0.2)); }

/* 小程序预览 */
.applet-mockup { width: 260px; }
.applet-home { height: 100%; padding: 40px 16px 16px; }
.applet-header { font-size: 18px; font-weight: 600; margin-bottom: 20px; text-align: center; }
.applet-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.applet-item { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.applet-item i { width: 44px; height: 44px; background: var(--gradient); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
.applet-item span { font-size: 12px; color: var(--dark); }

/* ===== 行业解决方案 ===== */
.industry-solutions { padding: 100px 0; background: var(--white); }
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.industry-card { background: var(--light); padding: 32px; border-radius: 20px; transition: all 0.3s; border: 1px solid transparent; }
.industry-card:hover { background: var(--white); border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-5px); }
.industry-icon { width: 64px; height: 64px; background: var(--gradient); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--white); margin-bottom: 20px; }
.industry-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.industry-card > p { font-size: 14px; color: var(--gray); margin-bottom: 20px; }
.industry-card ul li { display: flex; align-items: center; gap: 10px; padding: 6px 0; font-size: 13px; color: var(--dark); }
.industry-card ul li i { color: var(--success); }

/* ===== 为什么选择我们 ===== */
.why-us { padding: 100px 0; background: var(--light); }
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-card { padding: 32px; background: var(--white); border-radius: 20px; transition: all 0.3s; position: relative; overflow: hidden; }
.advantage-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.advantage-icon { width: 64px; height: 64px; background: var(--gradient); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: #fff; margin-bottom: 20px; }
.advantage-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.advantage-card p { font-size: 14px; color: var(--gray); }

/* ===== 产品展示 ===== */
.showcase { padding: 100px 0; background: var(--light); }
.showcase-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; }
.showcase-tab { padding: 12px 32px; background: var(--white); border: 2px solid transparent; border-radius: 50px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s; color: var(--gray); }
.showcase-tab.active { background: var(--primary); color: #fff; }
.showcase-container { background: var(--white); border-radius: 24px; padding: 40px; box-shadow: 0 4px 30px rgba(0,0,0,0.05); }
.showcase-panel { display: none; }
.showcase-panel.active { display: block; }
.showcase-screen { display: flex; justify-content: center; }
.showcase-screen.wide { max-width: 100%; }

/* 商城演示 */
.mall-demo { width: 320px; background: #f8fafc; border-radius: 24px; overflow: hidden; box-shadow: 0 10px 40px rgba(0,0,0,0.1); }
.demo-header { display: flex; justify-content: space-between; align-items: center; padding: 40px 16px 12px; color: var(--dark); font-size: 14px; font-weight: 500; }
.demo-header i { font-size: 16px; }
.product-banner { height: 180px; background: linear-gradient(135deg, #667eea, #764ba2); }
.product-detail { padding: 16px; }
.product-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.product-title h3 { font-size: 18px; font-weight: 700; }
.favorite { background: none; border: none; font-size: 20px; color: #ef4444; cursor: pointer; }
.product-price-row { display: flex; align-items: baseline; gap: 8px; margin-bottom: 12px; }
.current-price { font-size: 24px; font-weight: 700; color: #ef4444; }
.original-price { font-size: 14px; color: #94a3b8; text-decoration: line-through; }
.discount { padding: 2px 8px; background: #fef2f2; color: #ef4444; font-size: 12px; border-radius: 4px; }
.product-tags { display: flex; gap: 8px; margin-bottom: 16px; }
.product-tags span { padding: 4px 10px; background: rgba(16,185,129,0.1); color: #10b981; font-size: 11px; border-radius: 4px; }
.product-specs { border-top: 1px solid #e2e8f0; padding-top: 16px; margin-bottom: 16px; }
.spec-row { margin-bottom: 12px; }
.spec-label { font-size: 13px; color: var(--gray); display: block; margin-bottom: 8px; }
.spec-options { display: flex; gap: 8px; }
.spec-options span { padding: 6px 14px; background: #f1f5f9; border-radius: 6px; font-size: 13px; cursor: pointer; }
.spec-options span.active { background: var(--primary); color: #fff; }
.product-actions { display: flex; gap: 12px; }
.btn-add-cart { flex: 1; padding: 12px; background: #fef3c7; color: #d97706; border: none; border-radius: 10px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px; }
.btn-buy-now { flex: 1; padding: 12px; background: var(--primary); color: #fff; border: none; border-radius: 10px; font-weight: 600; cursor: pointer; }

/* 点餐演示 */
.restaurant-demo { width: 320px; background: #f8fafc; border-radius: 24px; overflow: hidden; box-shadow: 0 10px 40px rgba(0,0,0,0.1); }
.order-header { padding: 20px 16px; background: #fff; text-align: center; }
.order-status { display: flex; align-items: center; justify-content: center; gap: 8px; color: #10b981; font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.order-header p { font-size: 12px; color: var(--gray); }
.order-progress { display: flex; align-items: center; justify-content: center; padding: 24px 16px; gap: 0; }
.progress-step { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.step-icon { width: 36px; height: 36px; background: #e2e8f0; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--gray); font-size: 14px; }
.progress-step.active .step-icon { background: #10b981; color: #fff; }
.progress-step p { font-size: 11px; color: var(--gray); }
.progress-step.active p { color: #10b981; font-weight: 600; }
.progress-line { width: 40px; height: 2px; background: #e2e8f0; margin: 0 8px; margin-bottom: 20px; }
.order-items { padding: 16px; background: #fff; margin: 0 16px; border-radius: 12px; }
.order-item { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #f1f5f9; }
.order-item:last-child { border-bottom: none; }
.item-name { font-size: 14px; }
.item-price { font-weight: 600; }
.order-summary { padding: 16px; margin: 16px; background: #fff; border-radius: 12px; }
.summary-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 13px; color: var(--gray); }
.summary-row.total { border-top: 1px solid #e2e8f0; margin-top: 8px; padding-top: 12px; font-weight: 600; color: var(--dark); }
.total-price { font-size: 18px; color: #ef4444; }

/* 管理后台演示 */
.admin-demo { width: 100%; max-width: 1000px; background: #f1f5f9; border-radius: 12px; overflow: hidden; box-shadow: 0 15px 50px rgba(0,0,0,0.15); }
.admin-layout { display: flex; min-height: 500px; }
.admin-sidebar { width: 220px; background: #1e293b; padding: 20px 0; }
.sidebar-logo { display: flex; align-items: center; gap: 10px; padding: 0 20px; margin-bottom: 24px; color: #fff; font-weight: 600; }
.sidebar-logo i { color: var(--primary); }
.sidebar-menu { padding: 0 12px; }
.menu-group { margin-bottom: 20px; }
.menu-title { font-size: 11px; color: #64748b; text-transform: uppercase; letter-spacing: 1px; padding: 0 12px; margin-bottom: 8px; }
.menu-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; color: #94a3b8; border-radius: 8px; font-size: 14px; cursor: pointer; transition: all 0.2s; }
.menu-item:hover, .menu-item.active { background: rgba(79,70,229,0.2); color: #fff; }
.menu-item.active { background: var(--primary); }
.admin-main { flex: 1; padding: 20px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.header-breadcrumb { font-size: 14px; color: var(--gray); }
.header-user { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.user-avatar { width: 32px; height: 32px; background: var(--gradient); border-radius: 50%; }
.welcome-card { background: var(--gradient); color: #fff; padding: 20px 24px; border-radius: 12px; margin-bottom: 20px; }
.welcome-card h3 { font-size: 18px; margin-bottom: 4px; }
.welcome-card p { font-size: 13px; opacity: 0.9; }
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card { background: #fff; padding: 20px; border-radius: 12px; display: flex; align-items: center; gap: 16px; }
.stat-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff; }
.chart-card { background: #fff; padding: 20px; border-radius: 12px; margin-bottom: 20px; }
.chart-card .card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.chart-card h4 { font-size: 15px; font-weight: 600; }
.chart-bars-row { display: flex; align-items: flex-end; gap: 12px; height: 100px; padding-top: 20px; }
.table-section { background: #fff; padding: 20px; border-radius: 12px; }
.section-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.section-header-row h4 { font-size: 15px; font-weight: 600; }
.more-link { font-size: 13px; color: var(--primary); }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { padding: 12px 8px; text-align: left; border-bottom: 1px solid #f1f5f9; }
.data-table th { color: var(--gray); font-weight: 500; }
.status-badge { padding: 4px 10px; border-radius: 20px; font-size: 12px; }
.status-badge.success { background: rgba(16,185,129,0.1); color: #10b981; }
.status-badge.pending { background: rgba(245,158,11,0.1); color: #f59e0b; }
.status-badge.shipping { background: rgba(59,130,246,0.1); color: #3b82f6; }
.showcase-actions { text-align: center; margin-top: 32px; }

/* ===== 服务流程 ===== */
.process { padding: 100px 0; background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%); }
.process-timeline { display: flex; justify-content: space-between; position: relative; }
.process-timeline::before { content: ''; position: absolute; top: 30px; left: 60px; right: 60px; height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary)); }
.process-step { flex: 1; text-align: center; position: relative; z-index: 1; }
.step-marker { margin-bottom: 20px; }
.step-num { display: inline-block; width: 60px; height: 60px; background: var(--gradient); border-radius: 50%; font-size: 20px; font-weight: 700; color: #fff; line-height: 60px; box-shadow: 0 4px 20px rgba(79,70,229,0.4); }
.step-line { width: 100%; height: 2px; background: var(--gray); margin-top: 30px; opacity: 0.2; }
.step-content { background: rgba(255,255,255,0.05); padding: 24px 16px; border-radius: 16px; min-height: 200px; display: flex; flex-direction: column; align-items: center; }
.step-icon { width: 48px; height: 48px; background: rgba(79,70,229,0.2); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 20px; margin: 0 auto 16px; }
.step-content h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.step-content p { font-size: 13px; color: #94a3b8; margin-bottom: 8px; }
.step-time { font-size: 12px; color: var(--primary); background: rgba(79,70,229,0.2); padding: 4px 12px; border-radius: 20px; margin-top: auto; }

/* ===== 成功案例 ===== */
.cases { padding: 100px 0; background: var(--white); }
.cases-filter { display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; }
.filter-btn { padding: 8px 20px; background: var(--light); border: none; border-radius: 50px; font-size: 14px; cursor: pointer; transition: all 0.3s; color: var(--gray); }
.filter-btn.active, .filter-btn:hover { background: var(--primary); color: #fff; }
.cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.case-card { background: var(--light); border-radius: 16px; overflow: hidden; transition: all 0.3s; }
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.case-image { height: 140px; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); }
.case-image.case-ai { background: linear-gradient(135deg, #667eea, #764ba2); }
.case-image.case-mall { background: linear-gradient(135deg, #f59e0b, #f97316); }
.case-image.case-restaurant { background: linear-gradient(135deg, #ef4444, #f97316); }
.case-image.case-cloud { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.case-info { padding: 20px; }
.case-tag { display: inline-block; padding: 4px 10px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 11px; border-radius: 20px; margin-bottom: 8px; }
.case-info h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.case-info p { font-size: 13px; color: var(--gray); margin-bottom: 12px; }
.case-metrics span { font-size: 13px; color: var(--primary); font-weight: 600; }
.cases-more { text-align: center; margin-top: 40px; }

/* ===== 技术栈 ===== */
.tech-stack { padding: 80px 0; background: var(--light); }
.tech-categories { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.tech-category { background: var(--white); padding: 24px; border-radius: 16px; text-align: center; }
.tech-category h4 { font-size: 16px; font-weight: 600; margin-bottom: 20px; color: var(--dark); }
.tech-items { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.tech-item { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 12px 16px; border-radius: 10px; transition: all 0.3s; }
.tech-item:hover { background: var(--light); transform: translateY(-3px); }
.tech-item i { font-size: 32px; color: var(--primary); }
.tech-item span { font-size: 12px; color: var(--gray); }

/* ===== 客户评价 ===== */


/* ===== 常见问题 ===== */
.faq { padding: 100px 0; background: var(--light); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--white); border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
.faq-question { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; cursor: pointer; font-weight: 600; font-size: 15px; }
.faq-question i { color: var(--primary); transition: transform 0.3s; }
.faq-item.active .faq-question i { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s; }
.faq-item.active .faq-answer { max-height: 200px; }
.faq-answer p { padding: 0 24px 20px; font-size: 14px; color: var(--gray); line-height: 1.8; }

/* ===== 关于我们 ===== */
.about { padding: 100px 0; background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-content .section-tag { margin-bottom: 16px; }
.about-content h2 { font-size: 36px; font-weight: 700; margin-bottom: 24px; }
.about-intro { font-size: 16px; color: var(--dark); margin-bottom: 16px; line-height: 1.8; }
.about-content > p { font-size: 15px; color: var(--gray); margin-bottom: 32px; }
.about-features { display: flex; flex-direction: column; gap: 20px; }
.about-feature { display: flex; gap: 16px; }
.about-feature i { width: 48px; height: 48px; background: var(--gradient); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; flex-shrink: 0; }
.about-feature h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.about-feature p { font-size: 13px; color: var(--gray); }
.about-image { position: relative; }
.office-photo { height: 400px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 24px; }
.company-badge { position: absolute; bottom: -20px; right: 20px; background: var(--white); padding: 20px 32px; border-radius: 16px; box-shadow: var(--shadow); text-align: center; }
.badge-num { font-size: 36px; font-weight: 800; color: var(--primary); }
.company-badge p { font-size: 14px; color: var(--gray); }

/* ===== 团队 ===== */
.team { padding: 100px 0; background: var(--light); }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-member { background: var(--white); padding: 32px; border-radius: 20px; text-align: center; transition: all 0.3s; }
.team-member:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.member-photo { width: 100px; height: 100px; background: var(--gradient); border-radius: 50%; margin: 0 auto 20px; }
.team-member h4 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.member-title { font-size: 14px; color: var(--primary); margin-bottom: 12px; }
.member-desc { font-size: 13px; color: var(--gray); }

/* ===== 合作伙伴 ===== */
.partners-section { padding: 80px 0; background: var(--white); }
.partners-logos { display: flex; justify-content: center; flex-wrap: wrap; gap: 24px; }
.partner-logo-item { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 24px 40px; background: var(--light); border-radius: 12px; transition: all 0.3s; }
.partner-logo-item:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.partner-logo-item i { font-size: 36px; color: var(--primary); }
.partner-logo-item span { font-size: 14px; font-weight: 600; color: var(--dark); }

/* ===== 联系方式 ===== */
.contact { padding: 100px 0; background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%); }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; }
.contact-info-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.contact-card { background: var(--white); padding: 24px; border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.05); transition: all 0.3s; }
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-icon { width: 48px; height: 48px; background: var(--gradient); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; margin-bottom: 16px; }
.contact-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.card-value { font-size: 15px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.card-sub { font-size: 13px; color: var(--gray); }
.contact-form-wrapper { background: var(--white); padding: 40px; border-radius: 24px; box-shadow: var(--shadow); }
.contact-form-wrapper h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.form-intro { font-size: 14px; color: var(--gray); margin-bottom: 32px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; color: var(--dark); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 14px 18px; border: 2px solid #e2e8f0; border-radius: 10px; font-size: 15px; transition: border-color 0.3s; font-family: inherit; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.form-group textarea { resize: vertical; }
.form-footer { display: flex; align-items: center; gap: 20px; }
.btn-submit { padding: 16px 40px; }
.form-note { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--gray); }

/* ===== 侧边工具栏 ===== */
.sidebar-tools { position: fixed; right: 20px; bottom: 100px; display: flex; flex-direction: column; gap: 12px; z-index: 100; }
.tool-item { width: 48px; height: 48px; background: var(--white); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); transition: all 0.3s; }
.tool-item:hover { background: var(--primary); color: #fff; transform: scale(1.1); }
#backToTop { display: none; }
#backToTop.visible { display: flex; }

/* ===== 页脚 ===== */
.footer { background: #0f172a; color: #fff; }
.footer-main { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr) 1.5fr; gap: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-icon { background: var(--white); }
.footer-brand .company { color: #fff; }
.footer-brand p { font-size: 14px; color: #94a3b8; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 36px; height: 36px; background: rgba(255,255,255,0.1); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 16px; transition: all 0.3s; }
.footer-social a:hover { background: var(--primary); transform: translateY(-3px); }
.footer-links h4 { font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: #94a3b8; transition: color 0.3s; }
.footer-links a:hover { color: #fff; }
.footer-contact h4 { font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-contact .contact-item { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 14px; color: #94a3b8; }
.footer-contact .contact-item i { color: var(--primary); }
.qrcode { margin-top: 20px; }
.qrcode img { width: 80px; height: 80px; border-radius: 8px; margin-bottom: 8px; display: block; }
.qrcode p { font-size: 12px; color: #94a3b8; text-align: center; }
.footer-bottom { padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.1); }
.footer-bottom-content { display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 13px; color: #64748b; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { font-size: 13px; color: #64748b; }
.footer-bottom-links a:hover { color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-content h1 { font-size: 40px; }
    .ai-features-grid { grid-template-columns: repeat(2, 1fr); }
    .ai-features-row { grid-template-columns: repeat(2, 1fr); }
    .ai-pricing { grid-template-columns: 1fr; }
    .domain-card { grid-template-columns: 1fr; }
    .host-products { grid-template-columns: repeat(2, 1fr); }
    .deploy-features { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-categories { grid-template-columns: repeat(2, 1fr); }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
    .process-timeline { flex-wrap: wrap; gap: 20px; }
    .process-timeline::before { display: none; }
}

@media (max-width: 768px) {
    .top-bar { display: none; }
    .navbar { top: 0; }
    .nav-links, .nav-actions { display: none; }
    .mobile-menu-btn { display: block; }
    .hero .container { flex-direction: column; text-align: center; }
    .hero-content h1 { font-size: 32px; }
    .hero-features { justify-content: center; }
    .hero-buttons { justify-content: center; flex-wrap: wrap; }
    .ai-features-grid { grid-template-columns: 1fr; }
    .ai-features-row { grid-template-columns: 1fr; }
    .host-products { grid-template-columns: 1fr; }
    .deploy-features { grid-template-columns: 1fr; }
    .solutions-tabs { flex-wrap: wrap; }
    .solution-content { flex-direction: column; }
    .solution-content.reverse { flex-direction: column; }
    .solution-features { grid-template-columns: 1fr; }
    .solution-pricing { flex-direction: column; }
    .industry-grid { grid-template-columns: 1fr; }
    .showcase-tabs { flex-wrap: wrap; }
    .cases-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-info-cards { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}