/* ============================================================
   元歌科技 - 高端炫丽企业官网样式
   设计理念：科技感 + 品牌质感 + 流畅动效
   ============================================================ */

:root {
    --primary: #1677FF;
    --primary-dark: #0958D9;
    --primary-light: #4096FF;
    --accent: #36BFFA;
    --accent2: #9254DE;
    --bg: #F7F8FA;
    --bg-dark: #0A0E27;
    --text: #1D2129;
    --text-secondary: #4E5969;
    --text-light: #86909C;
    --white: #FFFFFF;
    --card-bg: rgba(255,255,255,0.85);
    --glass: rgba(255,255,255,0.12);
    --glass-border: rgba(255,255,255,0.2);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
    --shadow-blue: 0 8px 32px rgba(22,119,255,0.15);
    --radius-sm: 8px;
    --radius: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    overflow-x: hidden;
}

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

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

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

/* ==================== 导航栏 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 16px 0;
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0,0,0,0.15);
    padding: 10px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 1px;
}

.logo-img {
    height: 42px;
    width: auto;
    transition: var(--transition);
}

.header.scrolled .logo-img {
    height: 36px;
}

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

.menu a {
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 18px;
    border-radius: 25px;
    position: relative;
    transition: var(--transition);
}

.menu a:hover,
.menu a.active {
    color: #fff;
    background: rgba(255,255,255,0.12);
}

.menu a.active {
    background: rgba(255,255,255,0.18);
}

.mobile-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    padding: 8px;
}

.mobile-btn span {
    width: 26px;
    height: 2.5px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 14, 39, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.mobile-menu.show {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu a {
    color: #fff;
    font-size: 22px;
    font-weight: 500;
    padding: 12px 32px;
    border-radius: 30px;
    transition: var(--transition);
}

.mobile-menu a:hover {
    background: rgba(255,255,255,0.1);
}

/* ==================== 粒子背景Banner ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: var(--bg-dark);
}

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

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(22,119,255,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(146,84,222,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(54,191,250,0.15) 0%, transparent 50%);
    z-index: 2;
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50px;
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.8s ease forwards;
}

.hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.15s forwards;
    opacity: 0;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary-light), var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(16px, 2vw, 19px);
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.45s forwards;
    opacity: 0;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 32px rgba(22,119,255,0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(22,119,255,0.5);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    animation: bounce 2s infinite;
}

.hero-scroll span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.hero-scroll span::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255,255,255,0.6);
    border-radius: 2px;
    animation: scrollDot 2s infinite;
}

@keyframes scrollDot {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

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

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

/* ==================== 通用区块 ==================== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-dark);
    color: #fff;
}

.section-label {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(22,119,255,0.08);
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-dark .section-label {
    background: rgba(22,119,255,0.2);
    color: var(--primary-light);
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-dark .section-title {
    color: #fff;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    line-height: 1.7;
}

.section-dark .section-subtitle {
    color: rgba(255,255,255,0.55);
}

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

.section-header .section-subtitle {
    margin: 0 auto;
}

/* ==================== 服务卡片 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.04);
    cursor: default;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    position: relative;
}

.service-icon.blue { background: rgba(22,119,255,0.1); color: var(--primary); }
.service-icon.purple { background: rgba(146,84,222,0.1); color: var(--accent2); }
.service-icon.cyan { background: rgba(54,191,250,0.1); color: var(--accent); }
.service-icon.green { background: rgba(82,196,26,0.1); color: #52C41A; }
.service-icon.orange { background: rgba(250,140,22,0.1); color: #FA8C16; }
.service-icon.pink { background: rgba(235,47,150,0.1); color: #EB2F96; }

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

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

.service-card .service-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(22,119,255,0.06);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    margin-top: 16px;
}

/* ==================== 套餐卡片 ==================== */
.packages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}

.package-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.package-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.package-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(22,119,255,0.03) 0%, #fff 100%);
    transform: scale(1.03);
}

.package-card.featured:hover {
    transform: scale(1.03) translateY(-6px);
}

.package-badge {
    position: absolute;
    top: -14px;
    right: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(22,119,255,0.3);
}

.package-save-badge {
    position: absolute;
    top: 0;
    right: 24px;
    background: #1a1a1a;
    color: #fff;
    padding: 6px 16px;
    border-radius: 0 0 8px 8px;
    font-size: 13px;
    font-weight: 700;
}

.package-card.featured .package-save-badge {
    background: #1a1a1a;
}

.package-icon {
    font-size: 36px;
    margin-bottom: 20px;
}

.package-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.price-block {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    margin-bottom: 24px;
}

.price-old {
    font-size: 18px;
    color: var(--text-secondary);
    text-decoration: line-through;
    opacity: 0.8;
}

.price-current {
    font-size: 48px;
    font-weight: 900;
    color: var(--text);
    line-height: 1;
}

.price-current .price-unit {
    font-size: 18px;
    font-weight: 400;
    color: var(--text-light);
    margin-left: 4px;
}

.price-save {
    font-size: 13px;
    color: var(--red);
    font-weight: 600;
    margin-top: 4px;
}

.package-desc {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.package-features {
    list-style: none;
    flex: 1;
    margin-bottom: 28px;
}

.package-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.package-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.package-card .btn-primary {
    width: 100%;
    justify-content: center;
}

/* ==================== 案例展示 ==================== */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

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

.filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: var(--shadow-blue);
}

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

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.case-thumb {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.case-thumb img,
.case-thumb video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-card:hover .case-thumb img,
.case-card:hover .case-thumb video {
    transform: scale(1.08);
}

.case-type-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    z-index: 2;
}

.case-type-badge.image { background: rgba(22,119,255,0.85); }
.case-type-badge.video { background: rgba(235,47,150,0.85); }
.case-type-badge.mixed { background: rgba(146,84,222,0.85); }

.case-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(0,0,0,0.6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    z-index: 2;
    transition: var(--transition);
}

.case-card:hover .case-play {
    background: var(--primary);
    transform: translate(-50%, -50%) scale(1.1);
}

.case-info {
    padding: 20px 24px;
}

.case-category {
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.case-info p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ==================== 案例弹窗 ==================== */
.case-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.92);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.case-modal.active {
    display: flex;
}

.case-modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.case-modal-close:hover {
    background: rgba(255,255,255,0.2);
}

.case-modal-content {
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.case-modal-content img,
.case-modal-content video {
    width: 100%;
    border-radius: var(--radius);
}

.case-modal-content video {
    max-height: 70vh;
}

.case-modal-info {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 16px;
    color: #fff;
}

.case-modal-info h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.case-modal-info p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 1.7;
}

/* ==================== 资讯列表 ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.news-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-card-body {
    padding: 24px;
}

.news-card-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.news-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ==================== 联系表单 ==================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info-card {
    background: linear-gradient(135deg, var(--bg-dark), #1a1f3a);
    border-radius: var(--radius-lg);
    padding: 40px;
    color: #fff;
}

.contact-info-card h3 {
    font-size: 24px;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.contact-item-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item-text {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.contact-item-text strong {
    display: block;
    color: #fff;
    font-size: 16px;
    margin-bottom: 2px;
}

.contact-form-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

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

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

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid #E5E6EB;
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text);
    background: #FAFBFC;
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}

.form-input:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(22,119,255,0.08);
}

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

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

.captcha-display {
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    white-space: nowrap;
    user-select: none;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.6);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
    color: #fff;
}

/* ==================== 统计数字 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}

.stat-card:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
}

/* ==================== 内页Banner通用 ==================== */
.about-hero {
    padding: 180px 0 100px;
    background: var(--bg-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    animation: heroGlow 6s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 0.8; transform: scale(1); }
}

.about-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
}

/* 浮动光球通用 */
.about-hero .hero-orbs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.about-hero .hero-orbs .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    animation: orbFloat 10s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -20px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 10px) scale(1.05); }
}

/* 装饰线条通用 */
.about-hero .hero-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.about-hero .hero-lines::before,
.about-hero .hero-lines::after {
    content: '';
    position: absolute;
    animation: lineGlow 4s ease-in-out infinite alternate;
}

@keyframes lineGlow {
    0% { opacity: 0.3; }
    100% { opacity: 0.8; }
}

/* 网格背景通用 */
.about-hero .hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* ==================== 关于我们 - 蓝色科技（扫描线效果） ==================== */
.hero-about::before {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(22,119,255,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(54,191,250,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(22,119,255,0.1) 0%, transparent 60%);
    animation: heroGlow 6s ease-in-out infinite alternate;
}

.hero-about::after {
    background: linear-gradient(90deg, transparent, rgba(22,119,255,0.5), rgba(54,191,250,0.5), transparent);
}

/* 扫描线动画 */
.hero-about .hero-lines::before {
    top: 0; left: 15%;
    width: 2px; height: 100%;
    background: linear-gradient(180deg, transparent, rgba(22,119,255,0.6), transparent);
    animation: scanLine 3s ease-in-out infinite;
}

.hero-about .hero-lines::after {
    top: 0; right: 15%;
    width: 2px; height: 100%;
    background: linear-gradient(180deg, transparent, rgba(54,191,250,0.6), transparent);
    animation: scanLine 3s ease-in-out infinite reverse;
}

@keyframes scanLine {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

.hero-about .hero-orbs .orb:nth-child(1) {
    width: 200px; height: 200px;
    background: rgba(22,119,255,0.15);
    top: 10%; left: 5%;
    animation-duration: 12s;
}

.hero-about .hero-orbs .orb:nth-child(2) {
    width: 150px; height: 150px;
    background: rgba(54,191,250,0.12);
    top: 60%; right: 10%;
    animation-delay: -3s;
    animation-duration: 14s;
}

.hero-about .hero-orbs .orb:nth-child(3) {
    width: 120px; height: 120px;
    background: rgba(22,119,255,0.1);
    bottom: 20%; left: 30%;
    animation-delay: -6s;
    animation-duration: 10s;
}

.hero-about .hero-grid {
    background-image:
        linear-gradient(rgba(22,119,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(22,119,255,0.03) 1px, transparent 1px);
    animation: gridPulse 4s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ==================== 联系我们 - 绿色清新（呼吸光晕） ==================== */
.hero-contact::before {
    background:
        radial-gradient(ellipse at 30% 20%, rgba(16,185,129,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(52,211,153,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(16,185,129,0.1) 0%, transparent 60%);
    animation: heroGlow 5s ease-in-out infinite alternate;
}

.hero-contact::after {
    background: linear-gradient(90deg, transparent, rgba(16,185,129,0.5), rgba(52,211,153,0.5), transparent);
}

/* 呼吸光晕 */
.hero-contact .hero-lines::before {
    top: 0; left: 20%;
    width: 1px; height: 100%;
    background: linear-gradient(180deg, rgba(16,185,129,0.15), transparent);
    animation: breathe 4s ease-in-out infinite;
}

.hero-contact .hero-lines::after {
    top: 0; right: 20%;
    width: 1px; height: 100%;
    background: linear-gradient(180deg, rgba(52,211,153,0.15), transparent);
    animation: breathe 4s ease-in-out infinite;
    animation-delay: -2s;
}

@keyframes breathe {
    0%, 100% { opacity: 0.2; filter: blur(0px); }
    50% { opacity: 0.8; filter: blur(2px); }
}

.hero-contact .hero-orbs .orb:nth-child(1) {
    width: 180px; height: 180px;
    background: rgba(16,185,129,0.15);
    top: 15%; left: 8%;
    animation-duration: 11s;
}

.hero-contact .hero-orbs .orb:nth-child(2) {
    width: 140px; height: 140px;
    background: rgba(52,211,153,0.12);
    top: 55%; right: 12%;
    animation-delay: -4s;
    animation-duration: 13s;
}

.hero-contact .hero-orbs .orb:nth-child(3) {
    width: 100px; height: 100px;
    background: rgba(16,185,129,0.1);
    bottom: 25%; left: 35%;
    animation-delay: -7s;
    animation-duration: 9s;
}

.hero-contact .hero-grid {
    background-image:
        linear-gradient(rgba(16,185,129,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16,185,129,0.03) 1px, transparent 1px);
}

/* ==================== 成功案例 - 紫色创意（旋转光环） ==================== */
.hero-case::before {
    background:
        radial-gradient(ellipse at 25% 35%, rgba(146,84,222,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 75% 65%, rgba(168,85,247,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(146,84,222,0.1) 0%, transparent 60%);
    animation: heroGlow 7s ease-in-out infinite alternate;
}

.hero-case::after {
    background: linear-gradient(90deg, transparent, rgba(146,84,222,0.5), rgba(168,85,247,0.5), transparent);
}

/* 旋转光环 */
.hero-case .hero-lines::before {
    top: 50%; left: 50%;
    width: 300px; height: 300px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(146,84,222,0.2);
    border-radius: 50%;
    background: transparent;
    animation: rotateRing 20s linear infinite;
}

.hero-case .hero-lines::after {
    top: 50%; left: 50%;
    width: 400px; height: 400px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(168,85,247,0.15);
    border-radius: 50%;
    background: transparent;
    animation: rotateRing 25s linear infinite reverse;
}

@keyframes rotateRing {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-case .hero-orbs .orb:nth-child(1) {
    width: 220px; height: 220px;
    background: rgba(146,84,222,0.15);
    top: 5%; left: 3%;
    animation-duration: 13s;
}

.hero-case .hero-orbs .orb:nth-child(2) {
    width: 160px; height: 160px;
    background: rgba(168,85,247,0.12);
    top: 65%; right: 8%;
    animation-delay: -5s;
    animation-duration: 15s;
}

.hero-case .hero-orbs .orb:nth-child(3) {
    width: 130px; height: 130px;
    background: rgba(146,84,222,0.1);
    bottom: 15%; left: 25%;
    animation-delay: -8s;
    animation-duration: 11s;
}

.hero-case .hero-grid {
    background-image:
        linear-gradient(rgba(146,84,222,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(146,84,222,0.03) 1px, transparent 1px);
}

/* ==================== 资讯动态 - 橙色活力（脉冲波纹） ==================== */
.hero-news::before {
    background:
        radial-gradient(ellipse at 35% 25%, rgba(249,115,22,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 65% 75%, rgba(251,146,60,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(249,115,22,0.1) 0%, transparent 60%);
    animation: heroGlow 4s ease-in-out infinite alternate;
}

.hero-news::after {
    background: linear-gradient(90deg, transparent, rgba(249,115,22,0.5), rgba(251,146,60,0.5), transparent);
}

/* 脉冲波纹 */
.hero-news .hero-lines::before {
    top: 50%; left: 50%;
    width: 200px; height: 200px;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(249,115,22,0.3);
    border-radius: 50%;
    background: transparent;
    animation: pulse 2s ease-out infinite;
}

.hero-news .hero-lines::after {
    top: 50%; left: 50%;
    width: 200px; height: 200px;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(251,146,60,0.3);
    border-radius: 50%;
    background: transparent;
    animation: pulse 2s ease-out infinite;
    animation-delay: -1s;
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(0.5); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

.hero-news .hero-orbs .orb:nth-child(1) {
    width: 190px; height: 190px;
    background: rgba(249,115,22,0.15);
    top: 12%; left: 6%;
    animation-duration: 10s;
}

.hero-news .hero-orbs .orb:nth-child(2) {
    width: 145px; height: 145px;
    background: rgba(251,146,60,0.12);
    top: 58%; right: 11%;
    animation-delay: -3s;
    animation-duration: 12s;
}

.hero-news .hero-orbs .orb:nth-child(3) {
    width: 110px; height: 110px;
    background: rgba(249,115,22,0.1);
    bottom: 22%; left: 32%;
    animation-delay: -6s;
    animation-duration: 8s;
}

.hero-news .hero-grid {
    background-image:
        linear-gradient(rgba(249,115,22,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(249,115,22,0.03) 1px, transparent 1px);
}

/* ==================== 服务项目 - 青色专业（流动线条） ==================== */
.hero-service::before {
    background:
        radial-gradient(ellipse at 20% 40%, rgba(6,182,212,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 60%, rgba(34,211,238,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(6,182,212,0.1) 0%, transparent 60%);
    animation: heroGlow 6s ease-in-out infinite alternate;
}

.hero-service::after {
    background: linear-gradient(90deg, transparent, rgba(6,182,212,0.5), rgba(34,211,238,0.5), transparent);
}

/* 流动线条 */
.hero-service .hero-lines::before {
    top: 30%; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, rgba(6,182,212,0.6), transparent);
    animation: flowLine 3s ease-in-out infinite;
}

.hero-service .hero-lines::after {
    top: 70%; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, rgba(34,211,238,0.6), transparent);
    animation: flowLine 3s ease-in-out infinite;
    animation-delay: -1.5s;
}

@keyframes flowLine {
    0% { transform: translateX(-100%); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateX(100%); opacity: 0; }
}

.hero-service .hero-orbs .orb:nth-child(1) {
    width: 210px; height: 210px;
    background: rgba(6,182,212,0.15);
    top: 8%; left: 4%;
    animation-duration: 14s;
}

.hero-service .hero-orbs .orb:nth-child(2) {
    width: 155px; height: 155px;
    background: rgba(34,211,238,0.12);
    top: 62%; right: 9%;
    animation-delay: -4s;
    animation-duration: 16s;
}

.hero-service .hero-orbs .orb:nth-child(3) {
    width: 125px; height: 125px;
    background: rgba(6,182,212,0.1);
    bottom: 18%; left: 28%;
    animation-delay: -7s;
    animation-duration: 12s;
}

.hero-service .hero-grid {
    background-image:
        linear-gradient(rgba(6,182,212,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6,182,212,0.03) 1px, transparent 1px);
}

/* ==================== 套餐价格 - 金色高端（闪烁星光） ==================== */
.hero-package::before {
    background:
        radial-gradient(ellipse at 30% 30%, rgba(245,158,11,0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 70%, rgba(251,191,36,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(245,158,11,0.1) 0%, transparent 60%);
    animation: heroGlow 5s ease-in-out infinite alternate;
}

.hero-package::after {
    background: linear-gradient(90deg, transparent, rgba(245,158,11,0.5), rgba(251,191,36,0.5), transparent);
}

/* 闪烁星光 */
.hero-package .hero-lines::before {
    top: 20%; left: 25%;
    width: 4px; height: 4px;
    background: rgba(245,158,11,0.8);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(245,158,11,0.5);
    animation: twinkle 2s ease-in-out infinite;
}

.hero-package .hero-lines::after {
    top: 60%; right: 30%;
    width: 4px; height: 4px;
    background: rgba(251,191,36,0.8);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(251,191,36,0.5);
    animation: twinkle 2s ease-in-out infinite;
    animation-delay: -1s;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.2; transform: scale(0.5); }
    50% { opacity: 1; transform: scale(1.5); }
}

.hero-package .hero-orbs .orb:nth-child(1) {
    width: 200px; height: 200px;
    background: rgba(245,158,11,0.15);
    top: 10%; left: 5%;
    animation-duration: 11s;
}

.hero-package .hero-orbs .orb:nth-child(2) {
    width: 150px; height: 150px;
    background: rgba(251,191,36,0.12);
    top: 60%; right: 10%;
    animation-delay: -3s;
    animation-duration: 13s;
}

.hero-package .hero-orbs .orb:nth-child(3) {
    width: 115px; height: 115px;
    background: rgba(245,158,11,0.1);
    bottom: 20%; left: 30%;
    animation-delay: -5s;
    animation-duration: 9s;
}

.hero-package .hero-grid {
    background-image:
        linear-gradient(rgba(245,158,11,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,158,11,0.03) 1px, transparent 1px);
}

/* ==================== 404页面 - 红色警示（闪烁警告） ==================== */
.hero-404::before {
    background:
        radial-gradient(ellipse at 50% 50%, rgba(239,68,68,0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 20%, rgba(248,113,113,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(239,68,68,0.1) 0%, transparent 50%);
    animation: heroGlow 2s ease-in-out infinite alternate;
}

.hero-404::after {
    background: linear-gradient(90deg, transparent, rgba(239,68,68,0.5), rgba(248,113,113,0.5), transparent);
}

/* 闪烁警告 */
.hero-404 .hero-lines::before {
    top: 0; left: 25%;
    width: 1px; height: 100%;
    background: linear-gradient(180deg, rgba(239,68,68,0.3), transparent);
    animation: flash 1s ease-in-out infinite;
}

.hero-404 .hero-lines::after {
    top: 0; right: 25%;
    width: 1px; height: 100%;
    background: linear-gradient(180deg, rgba(248,113,113,0.3), transparent);
    animation: flash 1s ease-in-out infinite;
    animation-delay: -0.5s;
}

@keyframes flash {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

.hero-404 .hero-orbs .orb:nth-child(1) {
    width: 180px; height: 180px;
    background: rgba(239,68,68,0.15);
    top: 20%; left: 10%;
    animation-duration: 9s;
}

.hero-404 .hero-orbs .orb:nth-child(2) {
    width: 140px; height: 140px;
    background: rgba(248,113,113,0.12);
    top: 50%; right: 15%;
    animation-delay: -3s;
    animation-duration: 11s;
}

.hero-404 .hero-orbs .orb:nth-child(3) {
    width: 100px; height: 100px;
    background: rgba(239,68,68,0.1);
    bottom: 30%; left: 40%;
    animation-delay: -6s;
    animation-duration: 7s;
}

.hero-404 .hero-grid {
    background-image:
        linear-gradient(rgba(239,68,68,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(239,68,68,0.03) 1px, transparent 1px);
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 50px;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 32px;
    position: relative;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.breadcrumb:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.15);
}

.breadcrumb a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb span {
    color: rgba(255,255,255,0.4);
}

.breadcrumb span:last-child {
    color: var(--accent);
    font-weight: 500;
}

.about-hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    color: #fff;
    font-weight: 800;
    position: relative;
    letter-spacing: 1px;
    line-height: 1.3;
    text-shadow: 0 2px 20px rgba(22,119,255,0.3);
}

.about-hero .divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--accent2));
    margin: 24px auto;
    border-radius: 2px;
    position: relative;
}

.about-hero .divider::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(54,191,250,0.5);
}

.about-hero > p {
    font-size: 16px;
    color: rgba(255,255,255,0.6);
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

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

.about-text h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-visual {
    position: relative;
}

.about-visual .glow-box {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(22,119,255,0.08), rgba(146,84,222,0.08));
    border-radius: var(--radius-xl);
    border: 1px solid rgba(22,119,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    position: relative;
    overflow: hidden;
}

.glow-box::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(22,119,255,0.2), transparent);
    border-radius: 50%;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.5); opacity: 0.2; }
}

/* ==================== 面包屑 ==================== */
.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
    position: relative;
}

.breadcrumb a {
    color: rgba(255,255,255,0.7);
}

.breadcrumb a:hover {
    color: #fff;
}

.breadcrumb span {
    color: rgba(255,255,255,0.3);
}

/* ==================== 404页面 ==================== */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-dark);
    color: #fff;
}

.error-code {
    font-size: 120px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .services-grid,
    .packages-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu {
        display: none;
    }
    .mobile-btn {
        display: flex;
    }
    .services-grid,
    .packages-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .section {
        padding: 60px 0;
    }
    .hero {
        min-height: 90vh;
    }
    .package-card.featured {
        transform: none;
    }
    .package-card.featured:hover {
        transform: translateY(-6px);
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .btn-primary,
    .btn-outline {
        width: 100%;
        justify-content: center;
    }
    .contact-form-card,
    .contact-info-card {
        padding: 24px;
    }
    .about-hero {
        padding: 140px 0 70px;
    }
    .about-hero h1 {
        font-size: clamp(26px, 6vw, 36px);
    }
    .breadcrumb {
        font-size: 12px;
        padding: 6px 14px;
        margin-bottom: 24px;
    }
    .about-hero .divider {
        width: 50px;
        height: 3px;
        margin: 18px auto;
    }
    .about-hero .divider::before {
        width: 8px;
        height: 8px;
    }
    .about-hero > p {
        font-size: 14px;
        padding: 0 16px;
    }
    .about-hero .hero-lines::before {
        left: 8%;
    }
    .about-hero .hero-lines::after {
        right: 8%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .stat-number {
        font-size: 32px;
    }
    .cases-filter {
        gap: 6px;
    }
    .filter-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* ==================== 滚动动画 ==================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 回到顶部（旧版，保留兼容） ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(22,119,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(22,119,255,0.4);
}

/* ==================== 右侧悬浮联系栏 ==================== */
.sidebar-contact {
    position: fixed;
    right: 20px;
    bottom: 120px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-item {
    width: 48px;
    height: 48px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    text-decoration: none;
    color: var(--text);
    overflow: hidden;
}

.sidebar-item:hover {
    background: var(--primary);
    color: #fff;
    transform: translateX(-4px);
    box-shadow: 0 6px 20px rgba(22,119,255,0.25);
    width: auto;
    padding: 0 16px;
    border-radius: 24px;
}

.sidebar-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.sidebar-text {
    font-size: 13px;
    white-space: nowrap;
    max-width: 0;
    overflow: hidden;
    transition: max-width 0.3s ease, margin-left 0.3s ease;
    margin-left: 0;
}

.sidebar-item:hover .sidebar-text {
    max-width: 80px;
    margin-left: 8px;
}

#backToTopSide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

/* ==================== 微信弹窗 ==================== */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.wechat-modal.show {
    opacity: 1;
    pointer-events: auto;
}

.wechat-modal-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}

.wechat-modal-body {
    position: relative;
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 360px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { transform: translateY(20px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.wechat-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 24px;
    color: #86909C;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.wechat-modal-close:hover {
    background: #F2F3F5;
    color: #1D2129;
}

.wechat-qr-placeholder {
    width: 200px;
    height: 200px;
    margin: 20px auto;
    background: #F7F8FA;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed #E5E6EB;
}

/* ==================== 语言切换按钮 ==================== */
.lang-switch {
    font-size: 13px !important;
    padding: 6px 14px !important;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    margin-left: 8px;
    transition: all 0.3s ease;
}

.lang-switch:hover {
    background: rgba(255,255,255,0.1) !important;
    border-color: rgba(255,255,255,0.4);
}

.header.scrolled .lang-switch {
    border-color: rgba(255,255,255,0.3);
    color: #fff !important;
}

.header.scrolled .lang-switch:hover {
    background: rgba(255,255,255,0.12) !important;
    border-color: rgba(255,255,255,0.5);
}

@media (max-width: 768px) {
    .sidebar-contact {
        right: 12px;
        bottom: 80px;
        gap: 6px;
    }
    .sidebar-item {
        width: 42px;
        height: 42px;
        border-radius: 10px;
    }
    .sidebar-icon {
        font-size: 18px;
    }
    .lang-switch {
        margin-left: 0;
        margin-top: 8px;
        text-align: center;
        display: inline-block;
    }
}