/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f6f7f9;
    --bg-dark: #0b1020;
    --border-color: #e5e7eb;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', 'Noto Sans SC', sans-serif;
    --font-chinese: 'Noto Sans SC', sans-serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 80px 0;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    /* UI */
    --ring: 0 0 0 3px rgba(37,99,235,0.15);
    --radius: 10px;
}

html {
    scroll-behavior: smooth;
}

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

/* 暗色主题变量（参考 shadcn 配色结构） */
:root.dark {
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-light: #6b7280;
    --bg-primary: #0b1020;
    --bg-secondary: #101626;
    --border-color: #1f2937;
}

/* 主题切换按钮 */
.theme-toggle {
    margin-left: 12px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.theme-toggle:hover { background: rgba(0,0,0,0.04); }
.dark .theme-toggle { background: rgba(255,255,255,0.06); }
.dark .theme-toggle:hover { background: rgba(255,255,255,0.12); }
.theme-icon { font-size: 18px; }
.theme-icon-svg { width: 20px; height: 20px; color: var(--text-primary); }
.dark .theme-icon-svg { color: #e5e7eb; }

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 160px;
    position: relative;
    overflow: hidden;
}

.btn-primary { background: var(--primary-color); color: #fff; border-color: transparent; box-shadow: 0 8px 20px rgba(37,99,235,.25); }

.btn-primary:hover { transform: translateY(-1px); background: var(--primary-dark); box-shadow: 0 12px 30px rgba(37,99,235,.35); }

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

.btn-secondary:hover { background: rgba(0,0,0,0.04); transform: translateY(-1px); }

/* 英雄区上的次按钮使用浅色文字与描边，增强对比度 */
.hero .btn-secondary { color: #ffffff; border-color: rgba(255,255,255,0.85); }
.hero .btn-secondary:hover { background: rgba(255,255,255,0.12); }

.btn-full {
    width: 100%;
}

/* 按钮变体（shadcn 风）*/
.btn-outline { background: transparent; border-color: var(--border-color); color: var(--text-primary); }
.btn-outline:hover { background: rgba(0,0,0,.04); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-primary); }
.btn-ghost:hover { background: rgba(0,0,0,.04); }

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 9999;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-medium);
}

/* 暗色主题下导航条 */
.dark .navbar { background: rgba(16, 22, 38, 0.85); border-bottom-color: #1f2937; }
.dark .navbar.scrolled { background: rgba(16, 22, 38, 0.95); box-shadow: var(--shadow-medium); }
.dark .bar { background: #e5e7eb; }
.dark .nav-link { color: #e5e7eb; }
.dark .nav-link:hover { color: var(--primary-color); }

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.nav-logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-logo a:hover {
    color: var(--primary-dark);
}

/* 导航登录按钮（对齐 shadcn 线条按钮风格） */
.nav-button {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 40px !important;
    padding: 0 16px !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 8px !important;
    background: transparent !important;
    color: var(--text-primary) !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    line-height: 1 !important;
    text-decoration: none !important;
    transition: all var(--transition-fast) !important;
    position: static !important;
}

.nav-button:hover {
    background: rgba(0,0,0,0.04) !important;
    color: var(--text-primary) !important;
    transform: translateY(-1px) !important;
}

.dark .nav-button { border-color: #1f2937 !important; color: #e5e7eb !important; }
.dark .nav-button:hover { background: rgba(255,255,255,0.08) !important; color: #e5e7eb !important; }

.nav-button::after { display: none !important; }
.nav-button:hover::after { display: none !important; }

.logo-img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin-left: auto;
}

/* 右侧操作区域：靠右对齐并保持间距 */
.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}


/* 英雄区像素风 Canvas 层（位于背景与遮罩之间） */
.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    image-rendering: pixelated;
}

/* 发光色块与细网格（模仿 TRAE 质感） */
.hero-bg-blob,
.hero-bg-grid {
    position: absolute;
    inset: 0;
}

.hero-bg-blob::before,
.hero-bg-blob::after {
    content: '';
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    filter: blur(80px);
    opacity: .35;
    border-radius: 50%;
    transform: translate(-30%, -20%);
    background: radial-gradient(closest-side, rgba(99,102,241,.9), transparent 70%);
}

.hero-bg-blob::after {
    right: -20%;
    top: 20%;
    transform: translate(0,0);
    background: radial-gradient(closest-side, rgba(34,211,238,.9), transparent 70%);
}

.hero-bg-grid {
    background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 70%);
    animation: gridFloat 10s linear infinite;
    z-index: 0;
}

@keyframes gridFloat {
    from { background-position: 0 0, 0 0; }
    to { background-position: 24px 24px, 24px 24px; }
}

/* 英雄区按钮轻微发光增强 */
.hero .btn-primary {
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.45);
}
.hero .btn-primary:hover {
    box-shadow: 0 18px 44px rgba(37, 99, 235, 0.6);
}


.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,.40) 0%, rgba(0,0,0,.45) 35%, rgba(0,0,0,.55) 100%);
    z-index: 2;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
    width: 100%;
    max-width: var(--container-max-width);
    padding: 0 20px;
}

/* 英雄区轮播样式 */
.hero-swiper { 
    position: absolute; 
    inset: 0; 
    z-index: 1; 
    width: 100%;
    height: 100%;
}
.hero-slide-img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    display: block; 
    filter: saturate(1.05) contrast(1.05);
}
.hero-swiper-button { position: absolute; top: 50%; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.15); backdrop-filter: blur(8px); transform: translateY(-50%); z-index: 1; cursor: pointer; transition: all var(--transition-fast); }
.hero-swiper-button:hover { background: rgba(255,255,255,.25); }
.hero-swiper-prev { left: 24px; }
.hero-swiper-next { right: 24px; }
.hero-swiper-pagination { position: absolute; left: 0; right: 0; bottom: 24px; z-index: 1; }
.hero-swiper .swiper-pagination-bullet { background: rgba(255,255,255,.6); }
.hero-swiper .swiper-pagination-bullet-active { background: #fff; }

/* 确保Swiper正确显示 */
.hero-swiper.swiper {
    width: 100%;
    height: 100%;
}
.hero-swiper .swiper-wrapper {
    width: 100%;
    height: 100%;
}
.hero-swiper .swiper-slide {
    width: 100%;
    height: 100%;
}
.hero-swiper .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

/* 动态光泽文本（应用到首页主标题与导航 logo） */
.gloss-text {
    background: linear-gradient(120deg, #ffffff 0%, #f0f9ff 25%, #e0f2fe 50%, #f0f9ff 75%, #ffffff 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    animation: glossShift 8s ease-in-out infinite;
    text-shadow: 0 4px 12px rgba(255,255,255,.3);
}

@keyframes glossShift {
    0% { 
        background-position: 0% 50%;
        background: linear-gradient(120deg, #ffffff 0%, #f0f9ff 25%, #e0f2fe 50%, #f0f9ff 75%, #ffffff 100%);
    }
    25% { 
        background-position: 25% 50%;
        background: linear-gradient(120deg, #f0f9ff 0%, #e0f2fe 25%, #bae6fd 50%, #e0f2fe 75%, #f0f9ff 100%);
    }
    50% { 
        background-position: 50% 50%;
        background: linear-gradient(120deg, #e0f2fe 0%, #bae6fd 25%, #7dd3fc 50%, #bae6fd 75%, #e0f2fe 100%);
    }
    75% { 
        background-position: 75% 50%;
        background: linear-gradient(120deg, #bae6fd 0%, #7dd3fc 25%, #38bdf8 50%, #7dd3fc 75%, #bae6fd 100%);
    }
    100% { 
        background-position: 100% 50%;
        background: linear-gradient(120deg, #ffffff 0%, #f0f9ff 25%, #e0f2fe 50%, #f0f9ff 75%, #ffffff 100%);
    }
}

.hero-subtitle {
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.subtitle-main {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 500;
    margin-bottom: 0.8rem;
}

.subtitle-detail {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 400;
    margin-bottom: 0;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Section Styles */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Products Section */
.products {
    background: var(--bg-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: none;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    position: relative;
    display: flex;
    flex-direction: column; /* 让底部按钮可以对齐到底部 */
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
    border-color: rgba(37,99,235,.45);
}

.product-icon {
    width: 90px;
    height: 90px;
    margin-bottom: 1.5rem;
    background: transparent;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-icon img {
    width: 45px;
    height: 45px;
}

.product-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.product-description {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 立即试用 文本按钮 */
.product-cta { 
    display: flex; 
    justify-content: flex-end; 
    margin-top: auto; 
}

.product-cta .btn-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.product-cta .btn-link:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.product-cta .btn-link:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.product-cta .arrow { 
    font-size: 0.875rem; 
    line-height: 1; 
    transition: transform 0.2s ease-in-out;
}

.product-cta .btn-link:hover .arrow {
    transform: translateX(2px);
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

/* 使用 SVG 蒙版的对勾，符合 shadcn 纯色线条风格 */
.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 16px;
    height: 16px;
    background-color: var(--primary-color);
    transform: translateY(-50%);
    -webkit-mask: url('../images/icons/check.svg') no-repeat center / contain;
    mask: url('../images/icons/check.svg') no-repeat center / contain;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.about-images {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.image-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 1;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.image-item:hover img {
    transform: scale(1.05);
}

.about-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.image-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    padding: 1rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

/* Cases Section */
.cases {
    background: var(--bg-secondary);
}

.cases-slider {
    position: relative;
    padding: 0 2rem;
}

.cases-slider .swiper {
    padding: 2rem 0;
    overflow: visible;
}

.cases-slider .swiper-slide {
    height: auto;
    display: flex;
    align-items: stretch;
}

.cases-slider .swiper-wrapper {
    align-items: stretch;
}

.case-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: none;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 450px;
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
    border-color: rgba(37,99,235,.45);
}

.case-image {
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.case-content h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.case-content p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
    color: var(--text-secondary);
    flex: 1;
}

.case-stats {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Swiper Navigation - 客户案例专用 */
.cases-slider .swiper-button-next,
.cases-slider .swiper-button-prev {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: transparent;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 20px;
    z-index: 100;
    transition: all var(--transition-normal);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cases-slider .swiper-button-prev {
    left: 20px;
}

.cases-slider .swiper-button-next {
    right: 20px;
}

.cases-slider .swiper-button-next:hover,
.cases-slider .swiper-button-prev:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.cases-slider .swiper-button-next:after,
.cases-slider .swiper-button-prev:after {
    font-size: 20px;
    font-weight: bold;
}

.cases-slider .swiper-button-prev:after {
    content: '‹';
}

.cases-slider .swiper-button-next:after {
    content: '›';
}

/* 通用 Swiper 导航 */
.swiper-button-next,
.swiper-button-prev {
    color: var(--primary-color);
}

.swiper-pagination-bullet-active {
    background: var(--primary-color);
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
    margin-top: 2rem;
}

.contact-info {
    padding-right: 2rem;
    text-align: left;
}

.contact-details {
    margin-top: 0;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding: 0;
    background: transparent;
    border: none;
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: none;
    box-shadow: none;
    background: transparent;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border: 2px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.contact-icon img {
    width: 28px;
    height: 28px;
}

/* 暗色模式下的图标调整 */
.dark .contact-icon {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(124, 58, 237, 0.15));
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.dark .contact-icon img {
    filter: brightness(1.2) saturate(1.1);
}

.contact-text h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-text p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 1rem;
    max-width: 500px;
    text-align: left;
}

/* Form Styles */
.form {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    font-family: inherit;
}

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

/* 表单错误/禁用态（通用） */
.form-group input.error,
.form-group select.error,
.form-group textarea.error { border-color: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,.15); }
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled { background: rgba(0,0,0,.04); color: var(--text-secondary); cursor: not-allowed; }

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

/* WeChat QR Code Card */
.wechat-qr-section {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.qr-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    box-shadow: none;
    transition: all var(--transition-normal);
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.qr-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,.06);
    border-color: rgba(37,99,235,.3);
}

.qr-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.qr-avatar {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid rgba(37, 99, 235, 0.2);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.qr-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-user-info {
    text-align: left;
}

.qr-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.qr-location {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.qr-code-wrapper {
    margin: 2rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code-image {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition-normal);
}

.qr-code-image:hover {
    transform: scale(1.02);
}

.qr-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.qr-tip {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* 暗色模式下的二维码卡片 */
.dark .qr-card {
    border-color: #1f2937;
}

.dark .qr-card:hover {
    border-color: rgba(37,99,235,.4);
}

.dark .qr-avatar {
    border-color: rgba(37, 99, 235, 0.3);
}

/* WeChat Contact Card - 简化版（完整图片） */
.qr-card-simple {
    background: transparent;
    max-width: 269px;
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.wechat-contact-card {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
}

.wechat-contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

/* 暗色模式下的微信联系卡片 */
.dark .wechat-contact-card {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.dark .wechat-contact-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 40px;
    height: 40px;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

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

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

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-secondary);
}

/* 备案号链接样式：与域名同色，默认无下划线，hover 显示 */
.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast), text-decoration var(--transition-fast);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* 暗色模式下的页脚覆盖 */
.dark .footer { background: var(--bg-dark); color: #e5e7eb; }
.dark .footer-title { color: #ffffff; }
.dark .footer-links a { color: #9ca3af; }
.dark .footer-links a:hover { color: #ffffff; }
.dark .footer-contact p { color: #9ca3af; }
.dark .footer-bottom { border-top-color: #374151; color: #9ca3af; }
.dark .footer-bottom a { color: #9ca3af; }

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .subtitle-main {
        font-size: 1.2rem;
    }
    
    .subtitle-detail {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        min-width: 200px;
        padding: 14px 28px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-info {
        padding-right: 0;
        text-align: left;
    }
    
    .contact-item {
        padding: 0;
        margin-bottom: 2rem;
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
    }
    
    .contact-icon img {
        width: 24px;
        height: 24px;
    }
    
    .form {
        padding: 2rem;
    }

    .qr-card {
        padding: 2rem 1.5rem;
    }

    .qr-header {
        gap: 0.75rem;
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }

    .qr-avatar {
        width: 56px;
        height: 56px;
    }

    .qr-name {
        font-size: 1.25rem;
    }

    .qr-code-image {
        max-width: 240px;
    }

    /* 简化版微信卡片移动端适配 */
    .qr-card-simple {
        max-width: 100%;
    }

    .wechat-contact-card {
        border-radius: 10px;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .image-gallery {
        grid-template-columns: 1fr;
    }
    
    /* 移动端隐藏固定导航箭头 */
    .cases-slider .swiper-button-next,
    .cases-slider .swiper-button-prev {
        display: none;
    }
}

@media (max-width: 1024px) {
    /* 平板端调整箭头位置 */
    .cases-slider .swiper-button-prev {
        left: 10px;
    }
    
    .cases-slider .swiper-button-next {
        right: 10px;
    }
    
    .cases-slider .swiper-button-next,
    .cases-slider .swiper-button-prev {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .subtitle-main {
        font-size: 1.1rem;
    }
    
    .subtitle-detail {
        font-size: 0.95rem;
    }
    
    .product-card,
    .form {
        padding: 1.5rem;
    }
}

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar - 已禁用，使用浏览器默认样式 */
/*
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}
*/

/* User Menu Styles */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 辅助类：控制显示/隐藏 */
.hidden {
    display: none !important;
}

.visible:not(.nav-button) {
    display: inline-block !important;
}

/* 用户菜单 */
.user-menu {
    position: relative;
    display: flex;
    align-items: center;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.user-menu-trigger:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.dropdown-arrow {
    transition: transform var(--transition-fast);
}

.user-menu-trigger.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 260px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 10000;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 下拉菜单头部 */
.dropdown-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.avatar-placeholder {
    font-size: 24px;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info {
    flex: 1;
}

.user-display-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.user-phone {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

/* 分隔线 */
.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0;
}

/* 下拉菜单列表 */
.dropdown-menu {
    list-style: none;
    padding: 8px;
    margin: 0;
}

.dropdown-item {
    margin: 0;
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.dropdown-link:hover {
    background: var(--bg-secondary);
}

.dropdown-icon {
    font-size: 18px;
    width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 退出登录按钮 */
.dropdown-logout {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    color: #dc2626;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
    border-radius: 0 0 12px 12px;
}

.dropdown-logout:hover {
    background: #fee2e2;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .user-dropdown {
        right: -10px;
        min-width: 240px;
    }
}

/* ======================
   Environment Switcher
   ====================== */
.env-switcher {
    position: fixed !important;
    bottom: 24px !important;
    right: 24px !important;
    left: auto !important;
    z-index: 9998 !important;
}

.env-switcher-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.env-switcher-trigger:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.env-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
    animation: spin 3s linear infinite;
}

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

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

/* Environment Dropdown */
.env-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    right: 0;
    min-width: 280px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.env-switcher:hover .env-dropdown,
.env-switcher-trigger:focus + .env-dropdown,
.env-dropdown:hover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.env-dropdown-header {
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.env-option {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.env-option:first-of-type {
    border-radius: 0;
}

.env-option:last-of-type {
    border-radius: 0 0 12px 12px;
}

.env-option:hover {
    background: var(--bg-secondary);
}

.env-option.active {
    background: rgba(37, 99, 235, 0.08);
}

.env-option.active::after {
    content: '✓';
    margin-left: auto;
    color: var(--primary-color);
    font-weight: bold;
}

.env-option-icon {
    font-size: 20px;
    width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.env-option-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.env-option-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.env-option-url {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: 'Monaco', 'Courier New', monospace;
}

/* Dark Mode */
.dark .env-switcher-trigger {
    background: rgba(255, 255, 255, 0.06);
    border-color: #1f2937;
}

.dark .env-switcher-trigger:hover {
    background: rgba(255, 255, 255, 0.12);
}

.dark .env-dropdown {
    background: var(--bg-secondary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .env-switcher {
        bottom: 16px;
        right: 16px;
    }

    .env-switcher-trigger {
        padding: 8px 12px;
    }

    .env-dropdown {
        min-width: 240px;
        right: -10px;
    }
}