/* HX12TOP 企业官网 - 主样式文件 */

/* ==================== 基础变量 ==================== */
:root {
    /* 颜色变量 */
    --canvas-bg: #fcfcfc;
    --sky-wash: #f0f4fe;
    --midnight-blue: #020520;
    --graphite: #14141e;
    --slate-gray: #374151;
    --fog-gray: #696a72;
    --deep-fog: #95959b;
    --steel-gray: #6b7280;
    --signal-blue: #145aff;
    --hero-blue-start: rgb(59, 130, 246);
    --hero-blue-end: rgb(20, 90, 255);
    --emerald-green: #16ca2e;
    --coral-red: #f26052;
    --sky-blue: #0099ff;
    --amber: #ffa64d;
    --primary-action: #0f1f3d;
    --card-bg: #ffffff;
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Roboto Mono', monospace;
    
    /* 间距 */
    --section-gap: 80px;
    --element-gap: 8px;
    --container-max-width: 1200px;
    
    /* 圆角 */
    --radius-pill: 100px;
    --radius-card: 8px;
    --radius-badge: 4px;
    --radius-image: 16px;
    --radius-input: 12px;
    --radius-modal: 32px;
    --radius-button: 12px;
    --radius-large-card: 40px;
    
    /* 阴影 */
    --shadow-card: rgba(0, 0, 0, 0.1) 0px 0px 4px -2px;
    --shadow-elevated: rgba(0, 0, 0, 0.25) 0px 0px 4px -2px;
    --shadow-feature: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, 
                     rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, 
                     rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
    --shadow-blue: rgba(20, 90, 255, 0.1) 0px 0px 50px -28px, 
                   rgba(0, 0, 0, 0.18) 0px 0px 3px -1px;
    --shadow-ambient: rgba(20, 90, 255, 0.1) 0px 0px 100px -28px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ==================== 重置样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--canvas-bg);
    color: var(--graphite);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

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

/* ==================== 容器 ==================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 20px;
    border-radius: var(--radius-button);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    text-decoration: none;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.8);
    color: var(--primary-action);
    border: 1px solid var(--primary-action);
}

.btn-outline:hover {
    background: var(--primary-action);
    color: white;
}

.btn-primary {
    background: linear-gradient(var(--hero-blue-start), var(--hero-blue-end));
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue);
}

.btn-secondary {
    background: transparent;
    color: var(--signal-blue);
    border: 1px solid var(--signal-blue);
}

.btn-secondary:hover {
    background: var(--sky-wash);
}

.btn-large {
    padding: 18px 36px;
    font-size: 16px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(252, 252, 252, 0.9);
    backdrop-filter: blur(2px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--midnight-blue);
    letter-spacing: -0.22px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-gray);
    transition: var(--transition-fast);
}

.nav-link:hover {
    background: var(--sky-wash);
    color: var(--graphite);
}

.nav-link.active {
    background: var(--sky-wash);
    color: var(--signal-blue);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--slate-gray);
    cursor: pointer;
}

/* ==================== 移动端菜单 ==================== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--canvas-bg);
    z-index: 2000;
    display: none;
    flex-direction: column;
}

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

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.close-menu-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--slate-gray);
    cursor: pointer;
}

.mobile-menu-links {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-link {
    padding: 16px;
    border-radius: var(--radius-button);
    font-size: 16px;
    font-weight: 500;
    color: var(--slate-gray);
    transition: var(--transition-fast);
}

.mobile-link:hover {
    background: var(--sky-wash);
    color: var(--graphite);
}

.mobile-menu-cta {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* ==================== 主内容 ==================== */
.main-content {
    padding-top: 80px;
    min-height: 100vh;
}

/* ==================== 英雄区域 ==================== */
.hero {
    position: relative;
    padding: 120px 0;
    background: radial-gradient(97.8% 181.6% at 53.7% 50%, 
                               rgba(20, 20, 30, 0.02) 0%, 
                               rgba(88, 107, 141, 0.1) 100%);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--slate-gray);
    margin-bottom: 32px;
}

.hero-title {
    font-size: 80px;
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -2.96px;
    color: var(--midnight-blue);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: var(--fog-gray);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-image {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-large-card);
    overflow: hidden;
    box-shadow: var(--shadow-feature);
}

.hero-image img {
    width: 100%;
    border-radius: var(--radius-large-card);
}

/* ==================== 区块通用 ==================== */
.section {
    padding: var(--section-gap) 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.76px;
    color: var(--midnight-blue);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--fog-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 卡片 ==================== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    padding: 32px;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--sky-wash);
    border-radius: var(--radius-card);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--signal-blue);
    font-size: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 12px;
    letter-spacing: -0.16px;
}

.card-text {
    font-size: 14px;
    color: var(--fog-gray);
    line-height: 1.6;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--signal-blue);
}

.card-link:hover {
    color: var(--primary-action);
}

/* ==================== 网格布局 ==================== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

/* ==================== 产品/服务卡片 ==================== */
.product-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
}

.product-image {
    height: 200px;
    background: var(--sky-wash);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--signal-blue);
    font-size: 48px;
}

.product-content {
    padding: 24px;
}

.product-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 8px;
}

.product-desc {
    font-size: 14px;
    color: var(--fog-gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

/* ==================== 新闻列表 ==================== */
.news-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.news-date {
    font-size: 12px;
    color: var(--deep-fog);
    margin-bottom: 8px;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-excerpt {
    font-size: 14px;
    color: var(--fog-gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.news-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--signal-blue);
}

/* ==================== 客户Logo ==================== */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    align-items: center;
    justify-content-items: center;
}

.client-logo {
    height: 40px;
    opacity: 0.6;
    filter: grayscale(100%);
    transition: var(--transition-normal);
}

.client-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* ==================== 联系表单 ==================== */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--graphite);
    margin-bottom: 8px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 15px;
    background: var(--card-bg);
    border: 1px solid #cfcfcf;
    border-radius: var(--radius-input);
    font-family: var(--font-primary);
    font-size: 14px;
    color: var(--graphite);
    transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--sky-blue);
    box-shadow: 0 0 0 3px rgba(0, 153, 255, 1);
}

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

/* ==================== 页脚 ==================== */
.footer {
    background: var(--midnight-blue);
    color: white;
    padding: 80px 0 40px;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.22px;
}

.footer-subtitle {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: -0.16px;
}

.footer-description {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 24px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

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

.contact-info p {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.contact-info i {
    width: 20px;
    text-align: center;
    color: var(--signal-blue);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== 页面特定样式 ==================== */
.page-header {
    padding: 80px 0 40px;
    background: var(--sky-wash);
    text-align: center;
}

.page-title {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.76px;
    color: var(--midnight-blue);
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 16px;
    color: var(--fog-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 站点卡片 ==================== */
.site-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.site-domain {
    font-size: 16px;
    font-weight: 600;
    color: var(--graphite);
}

.site-status {
    padding: 4px 8px;
    border-radius: var(--radius-badge);
    font-size: 12px;
    font-weight: 500;
    background: rgba(22, 202, 46, 0.1);
    color: var(--emerald-green);
}

.site-info {
    font-size: 14px;
    color: var(--fog-gray);
    margin-bottom: 16px;
}

.site-actions {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }
    
    .nav-cta {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 56px;
        letter-spacing: -1.51px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 40px;
        letter-spacing: -0.76px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
        letter-spacing: -0.5px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .card {
        padding: 24px;
    }
    
    .btn {
        padding: 12px 16px;
        font-size: 14px;
    }
}

/* ==================== 工具类 ==================== */
.text-center {
    text-align: center;
}

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

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

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 8px;
}

.mb-2 {
    margin-bottom: 16px;
}

.mb-3 {
    margin-bottom: 24px;
}

.mb-4 {
    margin-bottom: 32px;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: 8px;
}

.mt-2 {
    margin-top: 16px;
}

.mt-3 {
    margin-top: 24px;
}

.mt-4 {
    margin-top: 32px;
}

.hidden {
    display: none;
}

.visible {
    display: block;
}