/* ============================================
   斗极智赢 - 官方网站样式表
   设计理念：暖白商务 · 毛玻璃特效 · 清爽专业
   主色调：暖白底 + 商务蓝 + 暖橙点缀
   ============================================ */

/* ===== 基础重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色 - 深蓝体系（匹配Logo） */
    --primary: #1a3a6e;
    --primary-light: #3d7dd5;
    --primary-dark: #122a52;
    --accent: #c9a96e;
    --accent-light: #d4ba85;
    --accent-dark: #a88a52;
    --accent-glow: rgba(201, 169, 110, 0.25);

    /* 背景色 - 暖白体系 */
    --bg: #f7f5f2;
    --bg-alt: #f0ede8;
    --bg-card: rgba(255, 255, 255, 0.55);
    --bg-card-hover: rgba(255, 255, 255, 0.7);
    --bg-dark: #2a2d3a;

    /* 文字色 */
    --text: #2d2d2d;
    --text-secondary: #6b6b6b;
    --text-light: #9a9a9a;

    /* 边框色 */
    --border: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(26, 58, 110, 0.3);
    --border-primary: rgba(26, 58, 110, 0.15);

    /* 功能色 */
    --success: #4ade80;

    /* 渐变 */
    --gradient: linear-gradient(135deg, #f7f5f2 0%, #efe9e3 100%);
    --gradient-accent: linear-gradient(135deg, #1a3a6e 0%, #3d7dd5 100%);
    --gradient-warm: linear-gradient(135deg, #c9a96e 0%, #d4ba85 100%);
    --gradient-mix: linear-gradient(135deg, #1a3a6e 0%, #3d7dd5 50%, #c9a96e 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.6) 0%, rgba(255,255,255,0.3) 100%);

    /* 阴影 */
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 40px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.1);
    --shadow-blue: 0 8px 40px rgba(26, 58, 110, 0.15);

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-blur: blur(20px);

    /* 过渡 */
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.2s ease;

    /* 布局 */
    --container-max: 1200px;
    --nav-height: 76px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    scrollbar-width: thin;
    scrollbar-color: var(--primary-light) var(--bg-alt);
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* 暖色光效背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 15% 15%, rgba(201, 169, 110, 0.08), transparent 40%),
        radial-gradient(circle at 85% 60%, rgba(26, 58, 110, 0.06), transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(201, 169, 110, 0.05), transparent 40%);
    z-index: -1;
    pointer-events: none;
}

/* 微妙纹理 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle, rgba(26, 58, 110, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -2;
    pointer-events: none;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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

.section {
    padding: 100px 0;
    position: relative;
}

/* 区块分隔线 - 柔和渐变 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(26, 58, 110, 0.15), transparent);
}

/* ===== 区块标题 ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease 0.1s, transform 0.8s ease 0.1s;
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    padding: 6px 20px;
    background: rgba(58, 110, 165, 0.06);
    border: 1px solid var(--border-primary);
    border-radius: 50px;
}

.section-title {
    font-size: 40px;
    font-weight: 900;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 渐变文字 ===== */
.gradient-text {
    background: linear-gradient(90deg, #1a3a6e, #c9a96e, #1a3a6e);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 30px rgba(26, 58, 110, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(26, 58, 110, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ===== 导航栏 - 毛玻璃 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(247, 245, 242, 0.6);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(247, 245, 242, 0.85);
    border-bottom-color: var(--border-primary);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 900;
    color: var(--text);
}

.logo-img {
    height: 48px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.nav-logo:hover .logo-img {
    transform: scale(1.05);
}

.logo-icon {
    color: var(--primary);
    font-size: 24px;
}

.nav-menu {
    display: flex;
    gap: 36px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 24px;
}

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

.btn-nav-cta {
    padding: 10px 28px;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(26, 58, 110, 0.2);
}

.btn-nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(26, 58, 110, 0.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

/* ===== Hero 区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--bg);
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: rgba(26, 58, 110, 0.14);
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: rgba(201, 169, 110, 0.13);
    bottom: -150px;
    left: -100px;
    animation: float 25s ease-in-out infinite reverse;
}

.shape-3 {
    width: 400px;
    height: 400px;
    background: rgba(61, 125, 213, 0.1);
    top: 40%;
    left: 50%;
    animation: float 30s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 760px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease;
    box-shadow: var(--shadow-sm);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.25;
    color: var(--text);
    margin-bottom: 24px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 64px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--border-primary);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-light);
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 关于我们 ===== */
.about {
    background: var(--bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-img-card {
    background: var(--gradient-accent);
    border-radius: 24px;
    padding: 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-blue);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-img-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent);
}

.about-img-icon {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
    position: relative;
}

.about-img-content h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
}

.about-img-content p {
    font-size: 16px;
    line-height: 1.8;
    opacity: 0.9;
    position: relative;
}

.about-img-decoration {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    border: 3px solid var(--accent);
    border-radius: 24px;
    opacity: 0.3;
    z-index: -1;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.about-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: var(--transition);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-sm);
}

.about-feature:hover .feature-icon {
    background: var(--glass-bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-blue);
}

.feature-text h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 核心服务 ===== */
.services {
    background: var(--bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(26, 58, 110, 0.06), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    background: var(--glass-bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-blue);
}

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

.service-card:hover::after {
    opacity: 1;
}

.service-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
    border: 1px solid var(--border-primary);
}

.service-icon-1 { background: rgba(58, 110, 165, 0.08); color: var(--primary); }
.service-icon-2 { background: rgba(212, 145, 90, 0.08); color: var(--accent); }
.service-icon-3 { background: rgba(58, 110, 165, 0.08); color: var(--primary); }
.service-icon-4 { background: rgba(212, 145, 90, 0.08); color: var(--accent); }
.service-icon-5 { background: rgba(58, 110, 165, 0.08); color: var(--primary); }
.service-icon-6 { background: rgba(212, 145, 90, 0.08); color: var(--accent); }

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: var(--shadow-blue);
}

.service-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-list {
    margin-bottom: 24px;
}

.service-list li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.service-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--primary);
    transition: var(--transition-fast);
    display: inline-block;
}

.service-link:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

/* ===== 核心优势 ===== */
.advantages {
    background: var(--bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.advantage-card, .honor-card {
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.advantage-card::after, .honor-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(26, 58, 110, 0.06), transparent);
    transition: var(--transition);
}

.advantage-card:hover, .honor-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md), var(--shadow-blue);
    transform: translateY(-4px);
}

.advantage-card:hover::after, .honor-card:hover::after {
    width: 250px;
    height: 250px;
}

/* 荣誉卡片图片样式 */
.honor-image {
    width: 400px;
    max-width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 20px 20px 0 0;
    background: linear-gradient(135deg, #f0f4f8, #e8edf3);
    margin: 0 auto;
}

.honor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.honor-content {
    padding: 24px 28px 28px;
}

.honor-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
}

.honor-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.advantage-number {
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-mix);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.8;
    flex-shrink: 0;
}

.advantage-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.advantage-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 成功案例 ===== */
.cases {
    background: var(--bg-alt);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.case-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-blue);
}

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

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

.case-bg-1 { background: linear-gradient(135deg, #1a3a6e, #3d7dd5); }
.case-bg-2 { background: linear-gradient(135deg, #c9a96e, #d4ba85); }
.case-bg-3 { background: linear-gradient(135deg, #1a3a6e, #c9a96e); }

.case-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.15), transparent);
}

.case-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.08), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-card:hover .case-image::after {
    opacity: 1;
}

.case-card:hover .case-overlay {
    transform: translateY(-4px);
    transition: transform 0.4s ease;
}

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

.case-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.case-content {
    padding: 32px;
}

.case-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.case-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.case-metrics {
    display: flex;
    gap: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.case-metric {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.metric-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 6px;
}

/* ===== 核心团队 ===== */
.team {
    background: var(--bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.team-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.team-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-blue);
    transform: translateY(-8px);
}

.team-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 2px solid var(--border-primary);
}

.avatar-1 { background: linear-gradient(135deg, #1a3a6e, #3d7dd5); }
.avatar-2 { background: linear-gradient(135deg, #c9a96e, #d4ba85); }
.avatar-3 { background: linear-gradient(135deg, #3d7dd5, #1a3a6e); }
.avatar-4 { background: linear-gradient(135deg, #d4ba85, #c9a96e); }

.avatar-initial {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.team-card:hover .team-avatar {
    transform: scale(1.1);
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(26, 58, 110, 0.25);
}

.team-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.team-role {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 12px;
}

.team-bio {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 联系我们 ===== */
.contact {
    background: var(--bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.contact-item:hover .contact-icon {
    background: var(--glass-bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-blue);
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 18px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 4px;
}

.contact-text span {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.contact-cta-box {
    background: var(--gradient-accent);
    border-radius: 20px;
    padding: 24px 28px;
    color: #fff;
    margin-bottom: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-blue);
    display: flex;
    align-items: center;
    gap: 24px;
}

.contact-cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent);
}

.contact-cta-box h4 {
    font-size: 20px;
    font-weight: 700;
    position: relative;
    flex-shrink: 0;
    white-space: nowrap;
}

.contact-cta-box p {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.6;
    position: relative;
    margin: 0;
}

/* 微信联系区 */
.contact-wechat-section {
    margin-top: 4px;
}

.contact-icon-wechat {
    color: #07c160 !important;
    background: rgba(7,193,96,0.12) !important;
    border-color: rgba(7,193,96,0.25) !important;
}

.contact-wechat-section .contact-text p {
    font-size: 15px;
    color: var(--primary);
    font-weight: 500;
}

.qrcode-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 16px;
    padding-left: 72px;
}

.qrcode-card {
    flex: 0 0 auto;
    width: 130px;
    background: rgba(255,255,255,0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px;
    text-align: center;
    transition: var(--transition);
}

.qrcode-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: #07c160;
}

.qrcode-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: contain;
    background: #fff;
    border-radius: 8px;
    margin-bottom: 8px;
    display: block;
}

.qrcode-img-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 12px;
    background: #f5f5f5;
}

.qrcode-info h5 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 2px;
}

.qrcode-info p {
    font-size: 11px;
    color: var(--text-light);
    line-height: 1.4;
    margin: 0;
}

/* 联系表单 */
.contact-form-wrap {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    background: rgba(255, 255, 255, 0.5);
    transition: var(--transition-fast);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 0 4px rgba(26, 58, 110, 0.1);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: #fff;
    color: var(--text);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 36px;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
    box-shadow: 0 8px 30px rgba(26, 58, 110, 0.2);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(26, 58, 110, 0.4);
}

.btn-submit:active {
    transform: translateY(0);
}

.form-note {
    font-size: 13px;
    color: var(--text-light);
    text-align: center;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.6);
    padding: 80px 0 32px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(201, 169, 110, 0.4), transparent);
}

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

.footer-brand .nav-logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand .nav-logo .logo-img {
    height: 52px;
}

.footer-desc {
    font-size: 15px;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

/* ===== 页脚社交图标 ===== */
.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(58, 110, 165, 0.3);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-accent);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: 0 8px 30px rgba(26, 58, 110, 0.3);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(26, 58, 110, 0.5);
}

/* ===== 滚动动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== 多方向入场动画 ===== */
.fade-in-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-scale {
    opacity: 0;
    transform: scale(0.85);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== 预加载器 ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.preloader-logo {
    width: 120px;
    height: auto;
    margin-bottom: 16px;
    animation: preloaderSpin 1.5s ease-in-out infinite;
}

@keyframes preloaderSpin {
    0%, 100% { transform: rotate(0deg) scale(1); opacity: 1; }
    50% { transform: rotate(180deg) scale(1.15); opacity: 0.85; }
}

.preloader-text {
    font-size: 22px;
    font-weight: 900;
    color: var(--text);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.preloader-bar {
    width: 200px;
    height: 3px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.preloader-progress {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px;
    animation: preloaderLoad 1.5s ease-in-out infinite;
}

@keyframes preloaderLoad {
    0% { width: 0%; margin-left: 0%; }
    50% { width: 60%; margin-left: 20%; }
    100% { width: 0%; margin-left: 100%; }
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-accent);
    z-index: 1001;
    transition: width 0.1s linear;
}

/* ===== 按钮涟漪效果 ===== */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: rippleEffect 0.6s ease-out;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===== 卡片3D倾斜容器 ===== */
.tilt-card {
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
    will-change: transform;
}

.tilt-card .tilt-inner {
    transform: translateZ(30px);
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 5px;
    border: 2px solid var(--bg-alt);
}

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

/* ===== 焦点可见样式（无障碍） ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== 文字选中样式 ===== */
::selection {
    background: var(--primary);
    color: #fff;
}

::-moz-selection {
    background: var(--primary);
    color: #fff;
}

/* ===== 响应式适配 ===== */
@media (max-width: 1024px) {
    .hero-title { font-size: 44px; }
    .section-title { font-size: 34px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(247, 245, 242, 0.95);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-primary);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
        max-height: calc(100vh - var(--nav-height));
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-actions { display: none; }
    .nav-toggle { display: flex; }

    .hero { min-height: auto; padding: 120px 0 80px; }
    .hero-title { font-size: 34px; }
    .hero-subtitle { font-size: 16px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary { width: 100%; justify-content: center; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .stat-divider { display: none; }
    .hero-scroll { display: none; }

    .section { padding: 64px 0; }
    .section-title { font-size: 28px; }
    .section-desc { font-size: 15px; }

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

    .advantage-card { flex-direction: column; gap: 16px; }
    .advantage-number { font-size: 36px; }

    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand .footer-desc { max-width: none; }

    .back-to-top { bottom: 20px; right: 20px; }

    .contact-form-wrap { padding: 24px; }
    .about-img-card { padding: 32px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 28px; }
    .stat-number { font-size: 28px; }
    .section-title { font-size: 24px; }
    .container { padding: 0 16px; }
    .hero-badge { font-size: 12px; padding: 6px 16px; }
    .hero-subtitle { font-size: 14px; }
    .section-tag { font-size: 11px; letter-spacing: 2px; }
    .case-metrics { gap: 20px; }
    .metric-value { font-size: 24px; }
}

/* ===== 大屏适配 ===== */
@media (min-width: 1600px) {
    :root {
        --container-max: 1400px;
    }
    .hero-title { font-size: 64px; }
    .section-title { font-size: 46px; }
}

/* ===== 横屏适配（手机横屏） ===== */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
    .hero {
        min-height: auto;
        padding: 100px 0 40px;
    }
    .hero-title { font-size: 30px; }
    .hero-subtitle { font-size: 14px; margin-bottom: 20px; }
    .hero-actions { margin-bottom: 30px; }
    .hero-stats { gap: 20px; }
    .stat-number { font-size: 26px; }

    .section { padding: 40px 0; }
    .section-header { margin-bottom: 30px; }

    .nav-menu {
        max-height: 60vh;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .navbar, .nav-toggle, .hero-scroll, .back-to-top,
    .scroll-progress, .preloader, .hero-bg,
    .contact-form-wrap, .btn-primary, .btn-secondary,
    .btn-nav-cta, .hero-actions {
        display: none !important;
    }

    body {
        color: #000;
        background: #fff;
        font-size: 12pt;
    }

    body::before, body::after {
        display: none !important;
    }

    .section {
        padding: 20px 0;
        page-break-inside: avoid;
    }

    .section::before {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 20px 0;
    }

    .hero-title {
        font-size: 24pt;
        color: #000;
    }

    .gradient-text {
        -webkit-text-fill-color: #1a3a6e;
        color: #1a3a6e;
    }

    .footer {
        background: #fff;
        color: #333;
    }

    .footer-bottom p,
    .footer-col ul li,
    .footer-desc {
        color: #333;
    }

    a::after {
        content: ' (' attr(href) ')';
        font-size: 10pt;
        color: #666;
    }
}

/* ===== 无障碍：减少动画 ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-shape { animation: none !important; }
    .badge-dot { animation: none !important; }
    .scroll-line { animation: none !important; }
    .gradient-text { animation: none !important; }

    .fade-in,
    .fade-in-left,
    .fade-in-right,
    .fade-in-scale {
        opacity: 1 !important;
        transform: none !important;
    }
}