/* ========================================
   Tristate Inc. Development LTD - Timber Style
   ======================================== */

/* 基础变量 - 原木风格 */
:root {
    /* 主色调 - 原木棕 */
    --primary-color: #8B5A2B;
    --primary-light: #A0522D;
    --primary-dark: #5D3A1A;
    --primary-glow: rgba(139, 90, 43, 0.3);
    
    /* 辅助色 - 自然色调 */
    --secondary-color: #D4A574;
    --accent-color: #CD853F;
    --success-color: #228B22;
    --warning-color: #DAA520;
    --error-color: #8B0000;
    
    /* 背景色 - 温暖大地色 */
    --bg-primary: #2C2416;
    --bg-secondary: #3D2B1F;
    --bg-tertiary: #4A3728;
    --bg-card: rgba(61, 43, 31, 0.9);
    
    /* 文字颜色 */
    --text-primary: #F5E6D3;
    --text-secondary: #D4C4B0;
    --text-muted: #A89278;
    
    /* 边框与分割 */
    --border-color: rgba(139, 90, 43, 0.3);
    --border-light: rgba(212, 165, 116, 0.2);
    
    /* 渐变 - 木质感 */
    --gradient-primary: linear-gradient(135deg, #8B5A2B 0%, #A0522D 50%, #CD853F 100%);
    --gradient-secondary: linear-gradient(135deg, #D4A574 0%, #DEB887 100%);
    --gradient-bg: linear-gradient(180deg, #2C2416 0%, #3D2B1F 100%);
    
    /* 阴影 - 柔和自然 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(139, 90, 43, 0.25);
    
    /* 字体 - 优雅衬线字体 */
    --font-main: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 圆角 - 更圆润 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* 背景效果 - 木质纹理 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(139, 90, 43, 0.03) 2px,
            rgba(139, 90, 43, 0.03) 4px
        ),
        radial-gradient(circle at 20% 20%, rgba(139, 90, 43, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(205, 133, 63, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(44, 36, 22, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
    font-family: var(--font-display);
}

.logo-icon {
    font-size: 2rem;
    color: var(--secondary-color);
    animation: wood-pulse 3s ease-in-out infinite;
}

@keyframes wood-pulse {
    0%, 100% { 
        transform: scale(1);
        filter: drop-shadow(0 0 4px var(--primary-glow));
    }
    50% { 
        transform: scale(1.05);
        filter: drop-shadow(0 0 8px var(--primary-glow));
    }
}

.logo-text {
    font-size: 1.4rem;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.footer-logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    vertical-align: middle;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
    transition: var(--transition-normal);
    font-size: 1rem;
}

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

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ========================================
   按钮
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(139, 90, 43, 0.4);
}

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

.btn-secondary:hover {
    background: rgba(139, 90, 43, 0.15);
    border-color: var(--primary-color);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(139, 90, 43, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 28px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 28px;
    font-family: var(--font-display);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* Hero 视觉效果 - 木材卡片 */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 550px;
    height: 550px;
    pointer-events: none;
}

.hero-timber-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.timber-card {
    position: absolute;
    background: var(--bg-card);
    backdrop-filter: blur(15px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: var(--shadow-lg);
    animation: float 5s ease-in-out infinite;
}

.timber-card i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.card-1 {
    top: 12%;
    left: 22%;
    animation-delay: 0s;
    border-color: rgba(139, 90, 43, 0.4);
}

.card-2 {
    top: 35%;
    right: 8%;
    animation-delay: 1.2s;
    border-color: rgba(205, 133, 63, 0.4);
}

.card-3 {
    bottom: 35%;
    left: 8%;
    animation-delay: 2.4s;
    border-color: rgba(212, 165, 116, 0.4);
}

.card-4 {
    bottom: 12%;
    right: 22%;
    animation-delay: 1.8s;
    border-color: rgba(139, 90, 43, 0.5);
}

/* ========================================
   特性区域
   ======================================== */
.features {
    padding: 120px 24px;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    font-family: var(--font-display);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 2rem;
    color: white;
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 16px;
    font-family: var(--font-display);
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   服务预览区域
   ======================================== */
.services-preview {
    padding: 120px 24px;
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-md);
    font-size: 1.8rem;
    color: white;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    font-family: var(--font-display);
}

.service-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.service-link:hover {
    color: var(--text-primary);
    gap: 12px;
}

/* ========================================
   数据展示
   ======================================== */
.stats {
    padding: 100px 24px;
    background: var(--gradient-primary);
    background-size: 200% 200%;
    animation: gradient-move 15s ease infinite;
}

@keyframes gradient-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-number {
    font-size: 4rem;
    font-weight: 700;
    color: white;
    font-family: var(--font-display);
    line-height: 1;
}

.stat-label {
    font-size: 2rem;
    font-weight: 600;
    color: white;
    margin-top: 8px;
}

.stat-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 8px;
}

/* ========================================
   CTA 区域
   ======================================== */
.cta {
    padding: 100px 24px;
    background: var(--bg-secondary);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: var(--font-display);
}

.cta-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* ========================================
   页面 Hero
   ======================================== */
.page-hero {
    padding: 160px 24px 80px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    text-align: center;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: var(--font-display);
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* ========================================
   关于页面
   ======================================== */
.about-intro {
    padding: 100px 24px;
    background: var(--bg-secondary);
}

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

.about-content {
    padding: 20px;
}

.about-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 28px;
    line-height: 1.2;
    font-family: var(--font-display);
}

.about-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: rgba(139, 90, 43, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-weight: 500;
}

.highlight-item i {
    color: var(--success-color);
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.timber-circle {
    position: relative;
    width: 400px;
    height: 400px;
}

.circle-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
    animation: rotate 20s linear infinite;
}

.circle-ring:nth-child(1) {
    width: 100%;
    height: 100%;
    border-color: rgba(139, 90, 43, 0.2);
}

.circle-ring:nth-child(2) {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-color: rgba(205, 133, 63, 0.3);
    animation-direction: reverse;
    animation-duration: 25s;
}

.circle-ring:nth-child(3) {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-color: rgba(212, 165, 116, 0.4);
    animation-duration: 30s;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.circle-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 3rem;
    color: white;
}

/* 企业文化 */
.culture {
    padding: 100px 24px;
    background: var(--bg-primary);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.culture-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-normal);
}

.culture-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.culture-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: 50%;
    font-size: 1.8rem;
    color: var(--bg-primary);
}

.culture-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 16px;
    font-family: var(--font-display);
}

.culture-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 时间线 */
.timeline {
    padding: 100px 24px;
    background: var(--bg-secondary);
}

.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding: 40px 0;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    padding: 30px 30px 30px 60px;
    margin-bottom: 20px;
}

.timeline-dot {
    position: absolute;
    left: 8px;
    top: 40px;
    width: 28px;
    height: 28px;
    background: var(--gradient-primary);
    border: 4px solid var(--bg-secondary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
    font-family: var(--font-display);
}

.timeline-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 团队 */
.team {
    padding: 100px 24px;
    background: var(--bg-primary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.team-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 50px 40px;
    text-align: center;
    transition: var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-8px);
    border-color: var(--secondary-color);
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 2.5rem;
    color: white;
}

.team-name {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 8px;
    font-family: var(--font-display);
}

.team-role {
    color: var(--secondary-color);
    font-size: 1rem;
    margin-bottom: 16px;
    font-weight: 500;
}

.team-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   服务详情
   ======================================== */
.services-detail {
    padding: 100px 24px;
    background: var(--bg-secondary);
}

.service-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.service-detail-card.reverse {
    direction: rtl;
}

.service-detail-card.reverse > * {
    direction: ltr;
}

.service-detail-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 2rem;
    color: white;
}

.service-detail-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: var(--font-display);
}

.service-detail-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.service-features {
    list-style: none;
    margin-bottom: 32px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: var(--text-secondary);
}

.service-features li i {
    color: var(--success-color);
}

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

.tech-label {
    font-weight: 600;
    color: var(--text-primary);
}

.tech-tag {
    padding: 8px 16px;
    background: rgba(139, 90, 43, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.service-detail-visual {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   联系页面
   ======================================== */
.contact-section {
    padding: 100px 24px;
    background: var(--bg-secondary);
}

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

.contact-form-container {
    padding: 20px;
}

.contact-form-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    font-family: var(--font-display);
}

.contact-form-desc {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-main);
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-message {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
}

.contact-info-container {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-card,
.contact-social-card,
.contact-qr-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.info-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 24px;
    font-family: var(--font-display);
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.info-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 1.3rem;
    color: white;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.info-content p {
    color: var(--text-secondary);
}

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

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 90, 43, 0.2);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--secondary-color);
    font-size: 1.3rem;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-4px);
}

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

.qr-placeholder i {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.qr-placeholder p {
    color: var(--text-secondary);
}

/* ========================================
   FAQ 区域
   ======================================== */
.faq-section {
    padding: 100px 24px;
    background: var(--bg-primary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.faq-item {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.faq-question i {
    color: var(--secondary-color);
    font-size: 1.3rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.faq-question span {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.faq-answer {
    padding-left: 40px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--bg-primary);
    border-top: 2px solid var(--border-color);
    padding: 60px 24px 30px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-section {
    padding: 10px;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
}

.footer-title i {
    color: var(--secondary-color);
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.footer-contact i {
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ========================================
   主内容区域
   ======================================== */
.main-content {
    padding-top: 80px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 150px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-visual {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 100%;
        height: 400px;
        margin-top: 60px;
    }
    
    .about-grid,
    .service-detail-card {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 20px 24px;
        gap: 0;
        border-bottom: 2px solid var(--border-color);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: 16px 0;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
    
    .features-grid,
    .services-grid,
    .culture-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   打印样式
   ======================================== */
@media print {
    .navbar,
    .footer,
    .hero-visual {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .main-content {
        padding-top: 0;
    }
}

/* ========================================
   背景图片增强效果
   ======================================== */
.hero .hero-content {
    background: rgba(44, 36, 22, 0.4);
    backdrop-filter: blur(5px);
    padding: 60px 40px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(212, 165, 116, 0.3);
}

.features .container,
.services-preview .container {
    background: rgba(44, 36, 22, 0.85);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 60px;
    border: 1px solid rgba(212, 165, 116, 0.2);
}

.page-hero .container {
    background: rgba(44, 36, 22, 0.6);
    backdrop-filter: blur(8px);
    padding: 80px 60px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(212, 165, 116, 0.3);
}

/* 图片加载优化 */
.hero,
.features,
.services-preview,
.page-hero {
    will-change: transform;
}

/* 移动设备背景图片优化 */
@media (max-width: 768px) {
    .hero,
    .features,
    .services-preview,
    .page-hero {
        background-attachment: scroll !important;
        background-size: cover !important;
    }
    
    .hero .hero-content,
    .features .container,
    .services-preview .container,
    .page-hero .container {
        padding: 30px;
    }
}

/* 暗色遮罩层增强文字可读性 */
.feature-card,
.service-card {
    background: rgba(44, 36, 22, 0.95);
    backdrop-filter: blur(15px);
    border: 2px solid rgba(212, 165, 116, 0.4);
}

/* 鼠标悬停时卡片发光效果 */
.feature-card:hover,
.service-card:hover {
    border-color: var(--secondary-color);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.6),
        0 0 20px rgba(212, 165, 116, 0.3);
}

/* 背景图片渐变叠加层 */
.features::before,
.services-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(44, 36, 22, 0.7) 0%,
        rgba(61, 43, 31, 0.8) 50%,
        rgba(44, 36, 22, 0.7) 100%
    );
    z-index: 0;
}

.features > .container,
.services-preview > .container {
    position: relative;
    z-index: 1;
}