/* 全局重置与基础变量 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
    overflow-x: hidden;
}

:root {
    --bg: #f4f7fc;
    --text: #1a1a2e;
    --primary: #0a0e1a;
    --secondary: #f0c040;
    --accent: #e8a020;
    --card-bg: rgba(255, 255, 255, 0.75);
    --glass: rgba(255, 255, 255, 0.25);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --border: rgba(255, 255, 255, 0.3);
    --nav-bg: rgba(10, 14, 26, 0.85);
    --footer-bg: #0a0e1a;
    --footer-text: #ccc;
    --hero-overlay: rgba(10, 14, 26, 0.5);
    --section-alt: #eef2f7;
    --gradient-1: linear-gradient(135deg, #0a0e1a 0%, #1a1a3e 100%);
    --gradient-2: linear-gradient(135deg, #f0c040 0%, #e8a020 100%);
    --gradient-3: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body.dark {
    --bg: #0f0f1a;
    --text: #e0e0e0;
    --card-bg: rgba(30, 30, 50, 0.8);
    --glass: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --border: rgba(255, 255, 255, 0.1);
    --nav-bg: rgba(10, 14, 26, 0.95);
    --footer-bg: #05050a;
    --footer-text: #aaa;
    --section-alt: #14141f;
    --hero-overlay: rgba(0, 0, 0, 0.7);
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--section-alt);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 30px;
    transition: transform 0.4s, box-shadow 0.4s;
}

.glass-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-2);
    color: #0a0e1a;
    box-shadow: 0 4px 20px rgba(240, 192, 64, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(240, 192, 64, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--secondary);
    color: var(--secondary);
}

.btn-outline:hover {
    background: var(--secondary);
    color: #0a0e1a;
}

.section-title {
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text);
    opacity: 0.75;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s, transform 0.8s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 992px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr 1fr;
    }
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    .section {
        padding: 50px 0;
    }
    .section-title {
        font-size: 1.8rem;
    }
}

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
}

.nav-logo svg {
    width: 42px;
    height: 42px;
}

.nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
    align-items: center;
}

.nav-links li a {
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-links li a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--secondary);
    border-radius: 2px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    background: var(--glass);
    border: 1px solid var(--border);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.search-toggle {
    background: var(--glass);
    border: 1px solid var(--border);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.search-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.mobile-menu-btn {
    display: none;
    background: var(--glass);
    border: 1px solid var(--border);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.3rem;
    align-items: center;
    justify-content: center;
}

.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    z-index: 999;
    display: none;
    flex-direction: column;
    padding: 30px 20px;
    overflow-y: auto;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    color: rgba(255, 255, 255, 0.85);
    padding: 16px 20px;
    border-radius: 12px;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.mobile-menu a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.search-overlay.open {
    display: flex;
}

.search-box {
    background: var(--card-bg);
    backdrop-filter: blur(30px);
    border-radius: 24px;
    padding: 30px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.search-box input {
    width: 100%;
    padding: 16px 20px;
    border-radius: 50px;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1.1rem;
    outline: none;
    transition: border 0.3s;
}

.search-box input:focus {
    border-color: var(--secondary);
}

.search-box .search-close {
    float: right;
    background: var(--glass);
    border: none;
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .nav-right {
        gap: 8px;
    }
}

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-1);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient(circle at 20% 50%, rgba(240, 192, 64, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 30%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 50% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
}

.hero-particles span {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
    opacity: 0.2;
    animation: float 12s infinite ease-in-out;
}

.hero-particles span:nth-child(1) { top: 10%; left: 20%; animation-delay: 0s; width: 8px; height: 8px; }
.hero-particles span:nth-child(2) { top: 30%; right: 15%; animation-delay: 2s; width: 5px; height: 5px; background: #667eea; }
.hero-particles span:nth-child(3) { bottom: 20%; left: 30%; animation-delay: 4s; width: 10px; height: 10px; background: #764ba2; }
.hero-particles span:nth-child(4) { top: 60%; right: 40%; animation-delay: 6s; width: 4px; height: 4px; }
.hero-particles span:nth-child(5) { bottom: 40%; left: 10%; animation-delay: 8s; width: 7px; height: 7px; background: #667eea; }
.hero-particles span:nth-child(6) { top: 80%; right: 25%; animation-delay: 10s; width: 6px; height: 6px; }

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 20px;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    background: var(--glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 8px 24px;
    color: var(--secondary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 4.2rem;
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 20px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin-top: 60px;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
    color: #fff;
}

.hero-stat .num {
    font-size: 2.6rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat .label {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-top: 4px;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.2); }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.6rem; }
    .hero p { font-size: 1.1rem; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 2rem; }
}

/* 关于我们 */
.about .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--text);
    opacity: 0.85;
    line-height: 1.8;
}

.about-image {
    background: var(--gradient-3);
    border-radius: 24px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.1));
}

@media (max-width: 768px) {
    .about .about-content { grid-template-columns: 1fr; }
}

/* 企业文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.culture-item {
    text-align: center;
    padding: 30px 16px;
}

.culture-item .icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
    display: block;
}

.culture-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.culture-item p {
    font-size: 0.95rem;
    opacity: 0.75;
}

@media (max-width: 768px) {
    .culture-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .culture-grid { grid-template-columns: 1fr; }
}

/* 发展历程 */
.milestone-timeline {
    position: relative;
    padding: 20px 0;
}

.milestone-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-2);
    transform: translateX(-50%);
    border-radius: 2px;
}

.milestone-item {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
    position: relative;
}

.milestone-item:nth-child(odd) { flex-direction: row; }
.milestone-item:nth-child(even) { flex-direction: row-reverse; }

.milestone-year {
    background: var(--gradient-2);
    color: #0a0e1a;
    font-weight: 800;
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 1.1rem;
    min-width: 100px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(240, 192, 64, 0.3);
}

.milestone-desc {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 24px;
    margin: 0 30px;
    flex: 1;
    box-shadow: var(--shadow);
}

.milestone-desc h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.milestone-desc p {
    opacity: 0.75;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .milestone-timeline::before { left: 20px; }
    .milestone-item, .milestone-item:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 50px;
    }
    .milestone-year { margin-bottom: 12px; }
    .milestone-desc { margin: 0; }
}

/* 产品中心 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    text-align: center;
    padding: 30px 20px;
}

.product-card .product-icon {
    font-size: 3.6rem;
    margin-bottom: 16px;
    display: block;
}

.product-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-card p {
    opacity: 0.75;
    font-size: 0.95rem;
    line-height: 1.7;
}

@media (max-width: 992px) {
    .product-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .product-grid { grid-template-columns: 1fr; }
}

/* 产品优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 30px 20px;
}

.advantage-card .adv-icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
    display: block;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-card p {
    opacity: 0.75;
    font-size: 0.95rem;
}

@media (max-width: 992px) {
    .advantages-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .advantages-grid { grid-template-columns: 1fr; }
}

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.solution-card {
    padding: 30px;
}

.solution-card .sol-icon {
    font-size: 2.6rem;
    margin-bottom: 16px;
    display: block;
}

.solution-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.solution-card p {
    opacity: 0.75;
    font-size: 0.95rem;
    line-height: 1.7;
}

@media (max-width: 640px) {
    .solutions-grid { grid-template-columns: 1fr; }
}

/* 行业应用 */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.industry-card {
    text-align: center;
    padding: 24px 16px;
}

.industry-card .ind-icon {
    font-size: 2.6rem;
    margin-bottom: 12px;
    display: block;
}

.industry-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

@media (max-width: 992px) {
    .industries-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .industries-grid { grid-template-columns: 1fr; }
}

/* 服务体系 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    text-align: center;
    padding: 30px 20px;
}

.service-card .svc-icon {
    font-size: 2.6rem;
    margin-bottom: 16px;
    display: block;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.service-card p {
    opacity: 0.75;
    font-size: 0.95rem;
}

@media (max-width: 992px) {
    .services-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .services-grid { grid-template-columns: 1fr; }
}

/* 合作伙伴 */
.partners-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    align-items: center;
}

.partner-item {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 30px;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text);
    opacity: 0.7;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.partner-item:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* 客户案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    padding: 24px;
}

.case-card .case-tag {
    display: inline-block;
    background: var(--gradient-2);
    color: #0a0e1a;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.case-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.case-card p {
    opacity: 0.75;
    font-size: 0.95rem;
}

@media (max-width: 992px) {
    .cases-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .cases-grid { grid-template-columns: 1fr; }
}

/* 客户评价 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    padding: 30px 24px;
    text-align: center;
}

.testimonial-card .stars {
    color: var(--secondary);
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.testimonial-card blockquote {
    font-style: italic;
    opacity: 0.85;
    line-height: 1.7;
    margin-bottom: 16px;
}

.testimonial-card .author {
    font-weight: 600;
    font-size: 0.95rem;
}

.testimonial-card .role {
    opacity: 0.6;
    font-size: 0.85rem;
}

@media (max-width: 992px) {
    .testimonials-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .testimonials-grid { grid-template-columns: 1fr; }
}

/* 新闻中心 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    padding: 24px;
}

.news-card .news-date {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 8px;
    display: block;
}

.news-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.news-card p {
    opacity: 0.75;
    font-size: 0.95rem;
    line-height: 1.6;
}

.news-card .read-more {
    display: inline-block;
    margin-top: 12px;
    font-weight: 600;
    color: var(--secondary);
}

@media (max-width: 992px) {
    .news-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .news-grid { grid-template-columns: 1fr; }
}

/* 常见问题 */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 8px 0;
    transition: color 0.3s;
}

.faq-question:hover {
    color: var(--secondary);
}

.faq-question .faq-toggle {
    font-size: 1.4rem;
    transition: transform 0.3s;
    color: var(--secondary);
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s;
    opacity: 0;
    padding: 0 8px;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    opacity: 1;
    padding: 12px 8px 8px;
}

.faq-answer p {
    opacity: 0.8;
    line-height: 1.7;
}

/* 使用指南 */
.howto-steps {
    max-width: 800px;
    margin: 0 auto;
    counter-reset: step;
}

.howto-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.howto-step .step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-2);
    color: #0a0e1a;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.howto-step .step-content h4 {
    font-weight: 700;
    margin-bottom: 4px;
}

.howto-step .step-content p {
    opacity: 0.75;
    font-size: 0.95rem;
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    padding: 30px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    opacity: 0.85;
}

.contact-info .ci-icon {
    font-size: 1.4rem;
    width: 28px;
    text-align: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border-radius: 12px;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--secondary);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}

/* 页脚 */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    opacity: 0.7;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--footer-text);
    opacity: 0.7;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--secondary);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 24px 0;
    gap: 16px;
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--footer-text);
    opacity: 0.7;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary);
}

@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-2);
    color: #0a0e1a;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(240, 192, 64, 0.4);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(240, 192, 64, 0.5);
}

/* Banner 轮播 */
.banner-carousel {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    min-height: 400px;
    background: var(--gradient-1);
}

.banner-slide {
    display: none;
    padding: 60px 40px;
    color: #fff;
    min-height: 400px;
    align-items: center;
}

.banner-slide.active {
    display: flex;
}

.banner-slide h2 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.banner-slide p {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 500px;
    margin-bottom: 24px;
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.banner-dots span.active {
    background: var(--secondary);
    width: 30px;
    border-radius: 6px;
}

.banner-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.banner-arrows button {
    pointer-events: auto;
    background: var(--glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    color: #fff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all 0.3s;
}

.banner-arrows button:hover {
    background: rgba(255, 255, 255, 0.2);
}

@media (max-width: 640px) {
    .banner-slide { padding: 40px 20px; min-height: 300px; }
    .banner-slide h2 { font-size: 1.6rem; }
}

/* 统计数据 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item .stat-label {
    font-size: 1rem;
    opacity: 0.7;
    margin-top: 8px;
}

@media (max-width: 992px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}

/* 团队介绍 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-card {
    text-align: center;
    padding: 24px;
}

.team-card .avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: var(--gradient-3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: #fff;
}

.team-card h4 {
    font-weight: 700;
    margin-bottom: 4px;
}

.team-card .role {
    opacity: 0.6;
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .team-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .team-grid { grid-template-columns: 1fr; }
}

/* 相关文章 */
.related-articles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-card {
    padding: 24px;
}

.related-card .related-date {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 8px;
    display: block;
}

.related-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.related-card p {
    opacity: 0.75;
    font-size: 0.95rem;
}

@media (max-width: 992px) {
    .related-articles { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    .related-articles { grid-template-columns: 1fr; }
}

/* 网站地图 */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.sitemap-col h4 {
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.sitemap-col ul {
    list-style: none;
}

.sitemap-col ul li {
    margin-bottom: 8px;
}

.sitemap-col ul li a {
    opacity: 0.7;
    font-size: 0.95rem;
    transition: opacity 0.3s;
}

.sitemap-col ul li a:hover {
    opacity: 1;
}

@media (max-width: 992px) {
    .sitemap-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .sitemap-grid { grid-template-columns: 1fr; }
}

/* 友情链接 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.friend-links a {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: all 0.3s;
    color: var(--text);
}

.friend-links a:hover {
    opacity: 1;
    background: var(--secondary);
    color: #0a0e1a;
}

/* 内容区域 */
.eoat-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.eoat-content p {
    margin-bottom: 16px;
    opacity: 0.85;
    line-height: 1.8;
}

/* Cookie 同意 */
.cookie-consent {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: none;
    align-items: center;
    gap: 20px;
    max-width: 600px;
    width: 90%;
}

.cookie-consent.show {
    display: flex;
}

.cookie-consent p {
    font-size: 0.95rem;
    opacity: 0.85;
    flex: 1;
}

.cookie-consent .btn {
    padding: 10px 24px;
    font-size: 0.9rem;
    white-space: nowrap;
}

@media (max-width: 480px) {
    .cookie-consent { flex-direction: column; text-align: center; }
}