/* ============================================
   武汉克勒斯新技术有限公司 - 主样式表
   ============================================ */

/* ---- CSS 变量 ---- */
:root {
    --primary: #1a1a2e;
    --primary-light: #2d2d4a;
    --accent: #c9a96e;
    --accent-light: #e0c78a;
    --gold: #c9a96e;
    --text: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg: #fff;
    --bg-light: #f8f8f8;
    --bg-dark: #1a1a2e;
    --border: #e8e8e8;
    --shadow: 0 2px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 8px 40px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- 通用组件 ---- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; border-radius: 6px; font-size: 15px; font-weight: 500;
    transition: var(--transition); border: 2px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-outline { border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
.btn-white { background: #fff; color: var(--primary); border-color: #fff; }
.btn-white:hover { background: transparent; color: #fff; }
.btn-outline-white { border-color: rgba(255,255,255,0.5); color: #fff; }
.btn-outline-white:hover { background: #fff; color: var(--primary); }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }

/* 区块通用 */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
    display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 3px;
    color: var(--accent); margin-bottom: 12px; text-transform: uppercase;
}
.section-title { font-size: 36px; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.section-desc { font-size: 16px; color: var(--text-light); max-width: 500px; margin: 0 auto; }
.section-more { text-align: center; margin-top: 50px; }

/* ============================================
   顶部导航栏
   ============================================ */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent; transition: var(--transition);
}
.header.scrolled { border-bottom-color: var(--border); box-shadow: 0 1px 10px rgba(0,0,0,0.05); }
.header .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 90px;
}

/* Logo */
.logo {
    display: flex; flex-direction: row; align-items: center; gap: 8px;
    font-size: 18px; font-weight: 700; color: var(--primary); flex-shrink: 0; line-height: 1.3;
}
.logo-img { width: auto; height: 160px; object-fit: contain; flex-shrink: 0; }
.logo-text { white-space: nowrap; letter-spacing: 1px; }

/* 导航 */
.nav-list { display: flex; gap: 6px; }
.nav-link {
    display: block; padding: 8px 16px; font-size: 14px; font-weight: 500;
    color: var(--primary); border-radius: 6px; transition: var(--transition); position: relative;
}
.nav-link:hover, .nav-link.active { color: var(--accent); background: var(--bg-light); }

/* 右侧操作 */
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-phone {
    display: flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600;
    color: var(--primary); transition: var(--transition);
}
.header-phone:hover { color: var(--accent); }

/* 汉堡菜单 */
.menu-toggle {
    display: none; flex-direction: column; gap: 5px; padding: 8px;
    width: 40px; height: 40px; align-items: center; justify-content: center;
}
.menu-toggle span {
    display: block; width: 22px; height: 2px; background: var(--primary);
    border-radius: 2px; transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================
   主横幅 Hero
   ============================================ */
.hero {
    position: relative; height: 100vh; min-height: 650px;
    display: flex; align-items: center; overflow: hidden;
}
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; }
.hero-slide.active { opacity: 1; }
.hero-bg {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(45,45,74,0.8) 40%, rgba(61,61,92,0.75) 100%),
                url('images/hero-bg.png') center/cover no-repeat;
}
.hero-bg-2 {
    background: linear-gradient(135deg, rgba(20,30,40,0.88) 0%, rgba(30,50,60,0.82) 40%, rgba(40,60,70,0.78) 100%),
                url('images/scenario-open.png') center/cover no-repeat;
}
.hero-bg-3 {
    background: linear-gradient(135deg, rgba(20,40,30,0.88) 0%, rgba(30,55,40,0.82) 40%, rgba(40,65,50,0.78) 100%),
                url('images/about-eco.png') center/cover no-repeat;
}
.hero-bg::after {
    content: ''; position: absolute; right: -5%; top: 50%; transform: translateY(-50%);
    width: 55%; height: 85%;
    background: linear-gradient(135deg, rgba(201,169,110,0.12) 0%, rgba(201,169,110,0.04) 100%);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}
.hero-content { position: relative; z-index: 2; max-width: 600px; padding-top: 60px; }
.hero-tag {
    display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 3px;
    color: var(--accent); margin-bottom: 20px; padding: 6px 16px;
    border: 1px solid rgba(201,169,110,0.3); border-radius: 20px;
}
.hero-title {
    font-size: 56px; font-weight: 700; line-height: 1.2; color: #fff; margin-bottom: 24px;
}
.hero-title-light { font-weight: 300; color: rgba(255,255,255,0.8); }
.hero-desc { font-size: 17px; color: rgba(255,255,255,0.6); line-height: 1.8; margin-bottom: 36px; }
.hero-buttons { display: flex; gap: 16px; }

/* Hero 指示器 */
.hero-dots {
    position: absolute; bottom: 80px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 10px; z-index: 3;
}
.hero-dots .dot {
    width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.3);
    cursor: pointer; transition: var(--transition);
}
.hero-dots .dot.active { background: var(--accent); width: 30px; border-radius: 5px; }

/* 向下滚动提示 */
.hero-scroll {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    color: rgba(255,255,255,0.4); font-size: 12px; z-index: 3; animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

/* ============================================
   品牌数据
   ============================================ */
.stats { background: var(--bg); padding: 0; margin-top: -60px; position: relative; z-index: 10; }
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
    background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.stat-item {
    text-align: center; padding: 40px 20px; position: relative;
}
.stat-item:not(:last-child)::after {
    content: ''; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
    width: 1px; height: 50px; background: var(--border);
}
.stat-number { font-size: 42px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.stat-label { font-size: 14px; color: var(--text-light); }

/* ============================================
   产品中心
   ============================================ */
.products { background: var(--bg-light); }

/* 产品分类标签 */
.product-tabs {
    display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; flex-wrap: wrap;
}
.tab-btn {
    padding: 10px 24px; border-radius: 25px; font-size: 14px; font-weight: 500;
    color: var(--text-light); border: 1px solid var(--border); transition: var(--transition);
    background: #fff;
}
.tab-btn:hover { color: var(--primary); border-color: var(--primary); }
.tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 产品网格 */
.product-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.product-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow); transition: var(--transition);
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }

/* 产品图片 */
.product-img-wrap { position: relative; height: 260px; overflow: hidden; }
.product-img {
    width: 100%; height: 100%; background-size: cover; background-position: center;
    transition: transform 0.6s ease;
}
.product-card:hover .product-img { transform: scale(1.08); }

/* 产品图片背景 */
.desk-1 { background: url('images/desk-standing.png') center/cover no-repeat; }
.chair-1 { background: url('images/chair-ergonomic.png') center/cover no-repeat; }
.meeting-1 { background: url('images/meeting-table.png') center/cover no-repeat; }
.cabinet-1 { background: url('images/cabinet.png') center/cover no-repeat; }
.sofa-1 { background: url('images/sofa-reception.png') center/cover no-repeat; }
.desk-2 { background: url('images/desk-lshape.png') center/cover no-repeat; }
.chair-2 { background: url('images/chair-mesh.png') center/cover no-repeat; }
.meeting-2 { background: url('images/meeting-fold.png') center/cover no-repeat; }

.product-overlay {
    position: absolute; inset: 0; background: rgba(26,26,46,0.5);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: var(--transition);
}
.product-card:hover .product-overlay { opacity: 1; }

.product-badge {
    position: absolute; top: 12px; left: 12px; padding: 4px 12px;
    background: var(--accent); color: #fff; font-size: 12px; border-radius: 4px;
    font-weight: 600;
}
.product-badge.new { background: #e94560; }

/* 产品信息 */
.product-info { padding: 20px; }
.product-category { font-size: 12px; color: var(--accent); font-weight: 500; margin-bottom: 6px; display: block; }
.product-name { font-size: 18px; font-weight: 600; color: var(--primary); margin-bottom: 6px; }
.product-desc { font-size: 13px; color: var(--text-lighter); }

/* ============================================
   空间场景方案
   ============================================ */
.scenarios { background: #fff; }
.scenario-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.scenario-card {
    position: relative; height: 380px; border-radius: var(--radius-lg); overflow: hidden;
    cursor: pointer;
}
.scenario-bg {
    position: absolute; inset: 0; background-size: cover; background-position: center;
    transition: transform 0.6s ease;
}
.scenario-card:hover .scenario-bg { transform: scale(1.08); }

.scenario-open { background: url('images/scenario-open.png') center/cover no-repeat; }
.scenario-executive { background: url('images/scenario-executive.png') center/cover no-repeat; }
.scenario-meeting { background: url('images/scenario-meeting.png') center/cover no-repeat; }

.scenario-content {
    position: relative; z-index: 2; padding: 40px; height: 100%;
    display: flex; flex-direction: column; justify-content: flex-end;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
    color: #fff;
}
.scenario-icon-wrap {
    width: 56px; height: 56px; border-radius: 50%; background: rgba(255,255,255,0.15);
    display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
    backdrop-filter: blur(4px);
}
.scenario-content h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.scenario-content p { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 16px; }
.scenario-link { color: var(--accent-light); font-size: 14px; font-weight: 500; transition: var(--transition); }
.scenario-link:hover { color: #fff; }

/* ============================================
   关于我们
   ============================================ */
.about { background: var(--bg-light); }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-image-wrap { position: relative; }
.about-image {
    border-radius: var(--radius-lg); background-size: cover; background-position: center;
}
.about-img-main {
    width: 100%; height: 400px;
    background: url('images/factory.png') center/cover no-repeat;
}
.about-img-sub {
    position: absolute; bottom: -30px; right: -30px; width: 200px; height: 150px;
    border-radius: var(--radius); border: 4px solid #fff; box-shadow: var(--shadow);
    background: url('images/about-eco.png') center/cover no-repeat;
}
.about-exp {
    position: absolute; top: 30px; left: -20px; background: var(--primary);
    color: #fff; padding: 20px; border-radius: var(--radius); text-align: center;
    box-shadow: var(--shadow-hover);
}
.about-exp-num { display: block; font-size: 36px; font-weight: 700; color: var(--accent); line-height: 1; }
.about-exp-text { font-size: 13px; color: rgba(255,255,255,0.7); }

.about-content .section-title { text-align: left; }
.about-subtitle { font-size: 18px; color: var(--accent); margin-bottom: 20px; font-weight: 500; }
.about-text { color: var(--text-light); margin-bottom: 16px; line-height: 1.9; }

/* 优势列表 */
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.about-feature { display: flex; gap: 12px; align-items: flex-start; }
.af-icon {
    width: 44px; height: 44px; border-radius: 10px; background: var(--accent);
    color: #fff; display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.about-feature strong { font-size: 14px; color: var(--primary); display: block; }
.about-feature p { font-size: 12px; color: var(--text-lighter); }

/* ============================================
   合作案例
   ============================================ */
.cases { background: #fff; }
.case-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.case-card {
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow); transition: var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-img {
    height: 240px; background-size: cover; background-position: center;
    transition: transform 0.6s ease;
}
.case-card:hover .case-img { transform: scale(1.05); }
.case-1 { background: url('images/case-tech.png') center/cover no-repeat; }
.case-2 { background: url('images/case-finance.png') center/cover no-repeat; }
.case-3 { background: url('images/case-education.png') center/cover no-repeat; }

.case-info { padding: 20px; }
.case-tag {
    display: inline-block; padding: 3px 10px; font-size: 11px; font-weight: 500;
    background: rgba(201,169,110,0.1); color: var(--accent); border-radius: 4px; margin-bottom: 10px;
}
.case-info h3 { font-size: 17px; font-weight: 600; color: var(--primary); margin-bottom: 6px; }
.case-info p { font-size: 13px; color: var(--text-lighter); }

/* ============================================
   服务流程
   ============================================ */
.process { background: var(--bg-light); }
.process-flow {
    display: flex; align-items: flex-start; justify-content: center; gap: 0;
    max-width: 1000px; margin: 0 auto;
}
.process-step { text-align: center; flex: 1; }
.process-icon-wrap {
    position: relative; width: 80px; height: 80px; margin: 0 auto 16px;
    background: #fff; border-radius: 50%; display: flex; align-items: center;
    justify-content: center; box-shadow: var(--shadow); transition: var(--transition);
}
.process-step:hover .process-icon-wrap { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.process-num {
    position: absolute; top: -8px; right: -8px; width: 28px; height: 28px;
    background: var(--accent); color: #fff; border-radius: 50%;
    font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.process-arrow {
    font-size: 24px; color: var(--border); padding-top: 28px; flex-shrink: 0;
    width: 40px; text-align: center;
}
.process-step h4 { font-size: 16px; font-weight: 600; color: var(--primary); margin-bottom: 4px; }
.process-step p { font-size: 13px; color: var(--text-lighter); }

/* ============================================
   新闻动态
   ============================================ */
.news { background: #fff; }
.news-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.news-card {
    border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow); transition: var(--transition);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.news-img {
    height: 200px; background-size: cover; background-position: center;
    transition: transform 0.6s ease;
}
.news-card:hover .news-img { transform: scale(1.05); }
.news-1 { background: url('images/news-award.png') center/cover no-repeat; }
.news-2 { background: url('images/news-exhibition.png') center/cover no-repeat; }
.news-3 { background: url('images/news-showroom.png') center/cover no-repeat; }

.news-content { padding: 20px; }
.news-date { font-size: 12px; color: var(--text-lighter); margin-bottom: 8px; display: block; }
.news-content h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; line-height: 1.5; }
.news-content h3 a { color: var(--primary); transition: var(--transition); }
.news-content h3 a:hover { color: var(--accent); }
.news-content p { font-size: 13px; color: var(--text-light); margin-bottom: 12px; line-height: 1.7; }
.news-more { font-size: 13px; color: var(--accent); font-weight: 500; transition: var(--transition); }
.news-more:hover { color: var(--primary); }

/* ============================================
   CTA 行动号召
   ============================================ */
.cta { padding-bottom: 100px; }
.cta-inner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg); padding: 60px 80px;
    display: flex; align-items: center; justify-content: space-between;
    position: relative; overflow: hidden;
}
.cta-inner::before {
    content: ''; position: absolute; right: -60px; top: -60px;
    width: 300px; height: 300px; border-radius: 50%;
    background: rgba(255,255,255,0.03);
}
.cta-inner::after {
    content: ''; position: absolute; left: -30px; bottom: -30px;
    width: 150px; height: 150px; border-radius: 50%;
    background: rgba(255,255,255,0.03);
}
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { font-size: 32px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,0.6); }
.cta-actions { display: flex; gap: 16px; position: relative; z-index: 1; flex-shrink: 0; }

/* ============================================
   页脚
   ============================================ */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.6); padding: 70px 0 0; }
.footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px;
    padding-bottom: 50px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p { font-size: 14px; margin: 16px 0; line-height: 1.8; }
.footer-logo {
    display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.footer-logo-img { width: 32px; height: 28px; object-fit: contain; flex-shrink: 0; }
.footer-logo .logo-icon { color: var(--accent); }

.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.5); transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #fff; }

.footer-col h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }

.footer-contact li {
    display: flex; align-items: flex-start; gap: 10px; font-size: 14px; line-height: 1.6;
}
.footer-contact li svg { margin-top: 3px; flex-shrink: 0; color: var(--accent); }

.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 0; font-size: 13px;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: rgba(255,255,255,0.4); transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ============================================
   返回顶部
   ============================================ */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px; width: 44px; height: 44px;
    background: var(--primary); color: #fff; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow); opacity: 0; visibility: hidden;
    transition: var(--transition); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); transform: translateY(-3px); }

/* ============================================
   动画
   ============================================ */
.fade-in {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .hero-title { font-size: 42px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .process-flow { flex-wrap: wrap; gap: 20px; }
    .process-arrow { display: none; }
    .process-step { flex: 0 0 calc(33.33% - 14px); }
}

@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
    .hero-title { font-size: 32px; }
    .hero-desc { font-size: 15px; }

    /* 导航 */
    .nav { position: fixed; top: 72px; left: 0; right: 0; bottom: 0; z-index: 1001;
        background: #fff; padding: 20px; transform: translateX(100%);
        transition: var(--transition); box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    }
    .nav.open { transform: translateX(0); }
    .nav-list { flex-direction: column; gap: 4px; }
    .nav-link { padding: 16px 20px; font-size: 16px; background: #f5f5f5; color: #1a1a2e; border-radius: 8px; display: block; font-weight: 600; }
    .nav-link:hover, .nav-link.active { background: #fff; color: #d4a853; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
    .header-phone { display: none; }
    .menu-toggle { display: flex; }

    /* Hero */
    .hero { min-height: 500px; }
    .hero-bg::after { display: none; }
    .hero-content { text-align: center; }
    .hero-buttons { justify-content: center; }

    /* 统计 */
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2)::after { display: none; }
    .stat-number { font-size: 32px; }

    /* 产品 */
    .product-grid { grid-template-columns: 1fr 1fr; gap: 16px; }

    /* 场景 */
    .scenario-grid { grid-template-columns: 1fr; }

    /* 关于 */
    .about-layout { grid-template-columns: 1fr; gap: 40px; }
    .about-img-sub { display: none; }
    .about-exp { top: 20px; left: 20px; }
    .about-features { grid-template-columns: 1fr; }

    /* 案例 */
    .case-grid { grid-template-columns: 1fr; }

    /* 新闻 */
    .news-grid { grid-template-columns: 1fr; }

    /* CTA */
    .cta-inner { flex-direction: column; text-align: center; gap: 24px; padding: 40px 30px; }
    .cta-actions { flex-direction: column; width: 100%; }
    .cta-actions .btn { width: 100%; }
    .cta-content h2 { font-size: 24px; }

    /* 页脚 */
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .header-actions .btn-primary { display: none; }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .process-step { flex: 0 0 calc(50% - 10px); }
}

/* ============================================
   产品详情弹窗
   ============================================ */
.product-modal {
    position: fixed; inset: 0; z-index: 9999;
    display: none; align-items: center; justify-content: center;
}
.product-modal.active { display: flex; }

.product-modal-overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
}

.product-modal-content {
    position: relative; width: 90%; max-width: 960px; max-height: 85vh;
    background: #fff; border-radius: var(--radius-lg);
    overflow-y: auto; z-index: 1;
    animation: modalIn 0.3s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.product-modal-close {
    position: absolute; top: 16px; right: 16px; z-index: 10;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(0,0,0,0.5); color: #fff;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.product-modal-close:hover { background: rgba(0,0,0,0.8); transform: rotate(90deg); }

.product-modal-body {
    display: grid; grid-template-columns: 1fr 1fr;
}

.product-modal-gallery {
    position: relative; min-height: 400px;
    background: var(--bg-light);
    display: flex; align-items: center; justify-content: center;
}
.product-modal-main-img {
    width: 100%; height: 100%; min-height: 400px;
    background-size: cover; background-position: center;
}

.product-modal-info {
    padding: 40px 36px; display: flex; flex-direction: column;
}
.product-modal-category {
    display: inline-block; font-size: 12px; font-weight: 700;
    letter-spacing: 3px; color: var(--accent); text-transform: uppercase;
    margin-bottom: 8px;
}
.product-modal-name {
    font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 8px;
}
.product-modal-short-desc {
    font-size: 15px; color: var(--text-light); margin-bottom: 16px;
}
.product-modal-price {
    font-size: 22px; font-weight: 700; color: #e74c3c; margin-bottom: 4px;
}
.product-modal-divider {
    height: 1px; background: var(--border); margin: 20px 0;
}
.product-modal-section-title {
    font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 10px;
}
.product-modal-desc {
    font-size: 14px; color: var(--text-light); line-height: 1.9; margin-bottom: 20px;
}
.product-modal-specs {
    width: 100%; border-collapse: collapse; margin-bottom: 24px;
}
.product-modal-specs tr {
    border-bottom: 1px solid var(--border);
}
.product-modal-specs tr:last-child { border-bottom: none; }
.product-modal-specs td {
    padding: 8px 0; font-size: 13px; color: var(--text-light);
}
.product-modal-specs td:first-child {
    color: var(--text); font-weight: 500; width: 35%;
}
.product-modal-actions {
    margin-top: auto; padding-top: 16px;
}
.product-modal-actions .btn { width: 100%; }

/* 弹窗响应式 */
@media (max-width: 768px) {
    .product-modal-body { grid-template-columns: 1fr; }
    .product-modal-gallery { min-height: 280px; }
    .product-modal-main-img { min-height: 280px; }
    .product-modal-info { padding: 24px 20px; }
    .product-modal-name { font-size: 22px; }
    .product-modal-content { width: 95%; max-height: 90vh; }
}

/* ============================================
   通用弹窗
   ============================================ */
.modal {
    position: fixed; inset: 0; z-index: 10000;
    display: none; align-items: center; justify-content: center;
}
.modal.active { display: flex; }
.modal-overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
}
.modal-content {
    position: relative; width: 90%; max-width: 640px; max-height: 90vh;
    background: #fff; border-radius: var(--radius-lg);
    overflow-y: auto; z-index: 1;
    animation: modalIn 0.3s ease;
}
.modal-close {
    position: absolute; top: 16px; right: 16px; z-index: 10;
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--bg-light); color: var(--text-light);
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.modal-close:hover { background: #e0e0e0; color: var(--primary); }
.modal-header {
    text-align: center; padding: 40px 36px 20px;
}
.modal-header h2 { font-size: 28px; font-weight: 700; color: var(--primary); margin: 8px 0; }
.modal-header p { font-size: 14px; color: var(--text-light); }

/* ============================================
   留言表单
   ============================================ */
.message-form {
    padding: 0 36px 36px;
}
.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; color: var(--text);
    margin-bottom: 6px;
}
.form-group .required { color: #e74c3c; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 10px 14px; border: 1px solid var(--border);
    border-radius: 6px; font-size: 14px; font-family: inherit;
    color: var(--text); background: var(--bg-light);
    transition: var(--transition); outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent); background: #fff;
    box-shadow: 0 0 0 3px rgba(201,169,110,0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-block { width: 100%; }

/* 提交成功 */
.form-success { text-align: center; padding: 40px 36px; }
.success-icon { color: #27ae60; margin-bottom: 16px; }
.form-success h3 { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.form-success p { font-size: 15px; color: var(--text-light); margin-bottom: 4px; }
.success-sub { font-size: 13px; color: var(--text-lighter); margin-top: 12px; }
.success-sub strong { color: var(--primary); }

/* 表单错误 */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #e74c3c;
}
.form-error { color: #e74c3c; font-size: 12px; margin-top: 4px; }

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .message-form { padding: 0 20px 24px; }
    .modal-header { padding: 32px 20px 16px; }
    .modal-header h2 { font-size: 24px; }
}

/* ============================================
   浮动客服悬浮窗
   ============================================ */
.cs-widget {
    position: fixed; bottom: 24px; right: 24px; z-index: 9998;
}
/* 触发按钮 */
.cs-trigger {
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--accent); color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(201,169,110,0.4);
    transition: var(--transition); position: relative; z-index: 2;
}
.cs-trigger:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(201,169,110,0.5);
}
.cs-trigger .cs-trigger-close { display: none; }
.cs-widget.open .cs-trigger {
    background: var(--primary);
    box-shadow: 0 4px 20px rgba(26,26,46,0.4);
}
.cs-widget.open .cs-trigger .cs-trigger-icon { display: none; }
.cs-widget.open .cs-trigger .cs-trigger-close { display: block; }
/* 脉冲动画 */
.cs-trigger::after {
    content: ''; position: absolute; inset: -4px; border-radius: 50%;
    border: 2px solid var(--accent);
    animation: csPulse 2s ease-out infinite;
}
@keyframes csPulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1.4); opacity: 0; }
}

/* 展开面板 */
.cs-panel {
    position: absolute; bottom: 72px; right: 0; width: 300px;
    background: #fff; border-radius: var(--radius-lg);
    box-shadow: 0 8px 40px rgba(0,0,0,0.12);
    overflow: hidden;
    transform: translateY(10px); opacity: 0; visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}
.cs-widget.open .cs-panel {
    transform: translateY(0); opacity: 1; visibility: visible;
    pointer-events: auto;
}
.cs-panel-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff; padding: 20px; display: flex; align-items: center; gap: 12px;
}
.cs-panel-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.cs-panel-header h4 { font-size: 16px; font-weight: 600; }
.cs-panel-header p { font-size: 12px; opacity: 0.8; }
.cs-panel-close {
    margin-left: auto; width: 28px; height: 28px; border-radius: 50%;
    background: rgba(255,255,255,0.15); color: #fff;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition); flex-shrink: 0;
}
.cs-panel-close:hover { background: rgba(255,255,255,0.3); }

.cs-panel-body { padding: 8px; }
.cs-option {
    display: flex; align-items: center; gap: 12px; padding: 14px 12px;
    border-radius: 8px; cursor: pointer; transition: var(--transition);
}
.cs-option:hover { background: var(--bg-light); }
.cs-option-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.cs-icon-phone { background: #e8f5e9; color: #27ae60; }
.cs-icon-wechat { background: #e8f5e9; color: #07c160; }
.cs-icon-msg { background: #e3f2fd; color: #2196f3; }
.cs-option-info strong { display: block; font-size: 14px; color: var(--primary); margin-bottom: 2px; }
.cs-option-info span { font-size: 12px; color: var(--text-lighter); }

.cs-panel-footer {
    padding: 12px 20px; border-top: 1px solid var(--border);
    text-align: center;
}
.cs-panel-footer p {
    font-size: 12px; color: var(--text-lighter);
    display: flex; align-items: center; justify-content: center; gap: 4px;
}

@media (max-width: 480px) {
    .cs-panel { width: 280px; right: -10px; }
    .cs-widget { bottom: 16px; right: 16px; }
}