/* ========================================
   WNS 威诺思 - 程序员个人接单网站样式
   配色：深色（黑/深灰）+ 亮色（蓝/青）
   ======================================== */

/* CSS 变量 */
:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary-color: #06b6d4;
    --accent-color: #8b5cf6;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #0ea5e9 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* 容器 */
.container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.logo-text {
    font-size: 28px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

/* Hero 区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-color);
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-color);
    bottom: -100px;
    left: -100px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* 代码窗口 */
.code-window {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 40px rgba(14, 165, 233, 0.1);
    border: 1px solid var(--border-color);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.code-title {
    margin-left: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.code-body {
    padding: 20px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.8;
}

.code-body pre {
    margin: 0;
}

.code-keyword { color: #c792ea; }
.code-variable { color: #82aaff; }
.code-property { color: #f78c6c; }
.code-string { color: #c3e88d; }
.code-function { color: #82aaff; }
.code-parameter { color: #ffcb6b; }

/* 通用区块样式 */
.section-padding {
    padding: 100px 0;
}

.bg-dark {
    background: var(--bg-darker);
}

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

.section-header.light .section-title,
.section-header.light .section-desc {
    color: var(--text-primary);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    margin-bottom: 24px;
}

.service-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.service-link:hover {
    gap: 12px;
}

/* 优势卡片 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary-color);
    margin: 0 auto 24px;
}

.advantage-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.advantage-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}

/* 案例展示 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.case-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.case-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: white;
}

.case-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.case-tag {
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.case-content {
    padding: 24px;
}

.case-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.case-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.case-link {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
}

.section-footer {
    text-align: center;
    margin-top: 40px;
}

/* CTA 区域 */
.cta-section {
    padding: 100px 0;
    background: var(--gradient-accent);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-outline {
    border-color: white;
    color: white;
}

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

/* 页脚 */
.footer {
    background: var(--bg-darker);
    padding: 60px 0 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
    line-height: 1.8;
}

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

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-column ul li i {
    margin-right: 8px;
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-muted);
}

.footer-bottom a:hover {
    color: var(--primary-color);
}

/* 悬浮按钮 */
.floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    box-shadow: var(--shadow-glow);
    z-index: 999;
    transition: var(--transition);
}

.floating-btn:hover {
    transform: scale(1.1) rotate(10deg);
}

/* 页面标题区域 */
.page-header {
    padding: 140px 0 60px;
    background: var(--bg-darker);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-accent);
    opacity: 0.1;
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 服务详情页 */
.service-detail {
    padding: 60px 0;
}

.service-block {
    margin-bottom: 80px;
}

.service-block-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.service-block-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.service-block h2 {
    font-size: 28px;
    font-weight: 700;
}

.service-section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.service-section h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: rgba(14, 165, 233, 0.05);
    border-radius: var(--border-radius);
}

.service-list li i {
    color: var(--primary-color);
    margin-top: 3px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tech-item {
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    right: -30px;
    width: 40px;
    height: 2px;
    background: var(--border-color);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin: 0 auto 16px;
}

.process-step h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.process-step p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 案例页 */
.case-filter {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.case-detail {
    padding: 60px 0;
}

.case-detail-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    margin-bottom: 40px;
}

.case-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 24px;
}

.case-gallery-item {
    aspect-ratio: 16/10;
    background: var(--bg-darker);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--text-muted);
}

.case-info {
    padding: 32px;
    border-top: 1px solid var(--border-color);
}

.case-info h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
}

.case-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.case-meta-item h4 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.case-meta-item p {
    font-size: 15px;
    color: var(--text-primary);
}

.case-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

.case-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    margin-top: 16px;
}

.case-status::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--success-color);
    border-radius: 50%;
}

/* 关于我页 */
.about-section-wrapper {
    padding: 60px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
}

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

.about-avatar {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: white;
    margin: 0 auto 24px;
    box-shadow: var(--shadow-glow);
}

.about-sidebar h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.about-sidebar .title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 16px;
}

.about-social {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.about-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.about-social a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.about-main h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-main p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-section {
    margin-bottom: 40px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.skill-item {
    background: var(--bg-card);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    font-size: 14px;
    text-align: center;
}

.philosophy-card {
    background: var(--gradient-primary);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    color: white;
}

.philosophy-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.philosophy-card p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* 联系页 */
.contact-section-wrapper {
    padding: 60px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-methods {
    margin-bottom: 40px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.contact-method-icon {
    width: 50px;
    height: 50px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-method h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-method p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact-method .note {
    font-size: 12px;
    color: var(--text-muted);
}

.qr-code {
    text-align: center;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: white;
    border-radius: var(--border-radius);
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-dark);
    font-size: 12px;
}

.contact-form-wrapper {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    border: 1px solid var(--border-color);
}

.contact-form-wrapper h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-subtitle {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group label .required {
    color: var(--error-color);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 15px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    cursor: pointer;
}

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

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

.form-submit {
    width: 100%;
    margin-top: 8px;
}

.contact-tips {
    margin-top: 40px;
    padding: 24px;
    background: rgba(14, 165, 233, 0.05);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
}

.contact-tips h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.contact-tips ul li {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 16px;
    position: relative;
}

.contact-tips ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* FAQ */
.faq-section {
    padding: 60px 0;
    background: var(--bg-darker);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question i {
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* 隐私政策页 */
.privacy-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0;
}

.privacy-section {
    margin-bottom: 40px;
}

.privacy-section h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.privacy-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.privacy-section ul {
    margin-left: 20px;
    list-style: disc;
}

.privacy-section ul li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.privacy-date {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-visual {
        display: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-section-wrapper {
        padding: 40px 0;
    }

    .about-sidebar {
        order: -1;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .contact-section-wrapper {
        padding: 40px 0;
    }

    .case-gallery {
        grid-template-columns: 1fr;
    }

    .process-step:not(:last-child)::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-toggle {
        display: block;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .services-grid,
    .advantages-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .cta-content h2 {
        font-size: 24px;
    }

    .page-header h1 {
        font-size: 32px;
    }

    .service-block-header {
        flex-direction: column;
        text-align: center;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .case-meta {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-buttons,
    .cta-buttons {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 20px;
        bottom: 20px;
        right: 20px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}