/* ==================== 基础样式 ==================== */

/* 移动端视口修复 - 防止地址栏隐藏导致的布局跳动 */
:root {
    --vh: 1vh;
}

@supports (-webkit-touch-callout: none) {
    /* iOS Safari 特殊处理 */
    body {
        min-height: -webkit-fill-available;
    }
}

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

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary: #333;
    --accent: #0ea5e9;
    --text-dark: #1a1a1a;
    --text-gray: #666;
    --text-light: #999;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #0a0a0a;
    --border: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(59, 130, 246, 0.08);
    --shadow-md: 0 8px 24px rgba(59, 130, 246, 0.12);
    --shadow-lg: 0 16px 48px rgba(59, 130, 246, 0.16);
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    /* 防止移动端地址栏隐藏导致的布局跳动 */
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
    writing-mode: horizontal-tb;
    direction: ltr;
    /* 防止移动端地址栏隐藏导致的布局跳动 */
    min-height: 100vh;
    min-height: -webkit-fill-available;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 粒子背景 ==================== */
#particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: background 0.3s ease, box-shadow 0.3s ease;
    transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    pointer-events: auto;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    position: relative;
    z-index: 1;
}

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

.logo-img {
    height: 40px;
    transition: transform 0.3s ease;
}

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

.brand-tagline {
    font-size: 15px;
    color: var(--text-gray);
    font-weight: 400;
    position: relative;
    padding-left: 16px;
    white-space: nowrap;
}

.brand-tagline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: var(--border);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white !important;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 30px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

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

/* ==================== 英雄区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

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

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 118, 255, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation-delay: 5s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

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

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
}

/* ==================== 英雄视觉效果 ==================== */
.visual-container {
    position: relative;
    width: 100%;
    height: 500px;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 16px 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: floatCard 6s infinite ease-in-out;
    font-size: 14px;
}

.floating-card i {
    font-size: 20px;
    color: var(--primary);
}

.floating-card span {
    font-weight: 600;
    color: var(--text-dark);
    white-space: nowrap;
}

.card-1 {
    top: 30px;
    left: 20px;
    animation-delay: 0s;
}

.card-2 {
    top: 30px;
    right: 20px;
    animation-delay: 1s;
}

.card-3 {
    top: 180px;
    left: 0;
    animation-delay: 2s;
}

.card-4 {
    top: 180px;
    right: 0;
    animation-delay: 3s;
}

.card-5 {
    bottom: 60px;
    left: 40px;
    animation-delay: 4s;
}

.card-6 {
    bottom: 60px;
    right: 40px;
    animation-delay: 5s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.central-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150px;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: pulse 3s infinite;
}

.ring-2 {
    animation-delay: 1.5s;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.1; }
    100% { transform: scale(1); opacity: 0.3; }
}

.central-icon i {
    font-size: 64px;
    color: var(--primary);
    z-index: 1;
}

/* ==================== 区块样式 ==================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ==================== 解决方案 ==================== */
.solutions {
    background: var(--bg-light);
}

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

.solution-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.solution-card:hover .card-glow {
    opacity: 1;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all 0.4s ease;
}

.solution-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card-icon i {
    font-size: 36px;
    color: white;
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

/* 轮播容器 */
.card-carousel {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
    margin-bottom: 20px;
}

.carousel-track {
    position: relative;
    width: 100%;
    flex: 1;
    overflow: hidden;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    display: flex;
    flex-direction: column;
}

.carousel-item.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

.card-description {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
    flex: 1;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 14px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 15px;
    font-size: 13px;
    font-weight: 500;
}

/* 轮播指示器 */
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.carousel-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dots .dot:hover {
    background: rgba(59, 130, 246, 0.6);
    transform: scale(1.2);
}

.carousel-dots .dot.active {
    width: 24px;
    border-radius: 4px;
    background: var(--primary);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s ease;
    margin-top: auto;
}

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

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

.cases-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 118, 255, 0.02) 100%);
}

.cases-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.cases-wrapper {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    transition: transform 0.5s ease;
}

/* 案例导航按钮 */
.case-nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    background: white;
    color: var(--primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.case-nav-btn:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.case-nav-btn:disabled {
    border-color: var(--border);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.5;
}

.case-card {
    background: white;
    padding: 36px;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: all 0.4s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-height: 280px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

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

.case-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: all 0.4s ease;
}

.case-card:hover .case-icon {
    background: var(--gradient-primary);
    transform: scale(1.1);
}

.case-icon i {
    font-size: 36px;
    color: var(--primary);
    transition: color 0.3s ease;
}

.case-card:hover .case-icon i {
    color: white;
}

.case-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    line-height: 1.4;
}

.case-description {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.8;
    flex: 1;
    text-align: left;
}

.case-tags {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: auto;
}

.case-tags span {
    padding: 6px 14px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

/* ==================== 合作伙伴 ==================== */
.partners {
    background: var(--bg-light);
    padding: 80px 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    align-items: center;
}

.partner-item {
    background: white;
    padding: 30px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    border: 1px solid var(--border);
    min-height: 120px;
}

.partner-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.partner-logo {
    max-width: 100%;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: all 0.4s ease;
}

.partner-item:hover .partner-logo {
    transform: scale(1.05);
}

/* ==================== 工作流程 ==================== */
.workflow {
    background: var(--bg-light);
}

.workflow-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.workflow-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    gap: 40px;
    margin-bottom: 60px;
    align-items: center;
}

.timeline-item .timeline-content {
    min-width: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
    grid-row: 1;
}

.timeline-item:nth-child(even) .timeline-number {
    grid-column: 2;
    grid-row: 1;
}

.timeline-number {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.timeline-content {
    background: white;
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    writing-mode: horizontal-tb;
    direction: ltr;
    text-align: left;
}

.timeline-content * {
    writing-mode: horizontal-tb !important;
    direction: ltr !important;
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.timeline-item:nth-child(even) .timeline-content:hover {
    transform: translateX(-10px);
}

.timeline-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.timeline-icon i {
    font-size: 28px;
    color: var(--primary);
}

.timeline-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    word-break: keep-all;
    white-space: normal;
    margin: 0;
}

.timeline-description {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.7;
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    word-wrap: break-word;
    white-space: normal;
}

/* ==================== 关于我们 ==================== */
.about {
    background: white;
}

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

.about-tagline {
    font-size: 32px;
    font-weight: 300;
    color: var(--text-dark);
    margin-bottom: 32px;
    position: relative;
    display: inline-block;
    padding-bottom: 16px;
}

.about-tagline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-description {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-mission {
    display: flex;
    gap: 20px;
    margin-top: 40px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 16px;
    border-left: 4px solid var(--primary);
}

.mission-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.mission-icon i {
    font-size: 28px;
    color: white;
}

.mission-text h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.mission-text p {
    font-size: 18px;
    color: var(--primary);
    font-weight: 600;
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.visual-item {
    background: white;
    padding: 32px;
    border-radius: 16px;
    text-align: center;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.visual-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.visual-item i {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 16px;
}

.visual-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}

/* ==================== 发展历程 ==================== */
.milestone-section {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--border);
}

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

.milestone-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.milestone-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.milestone-subtitle {
    font-size: 16px;
    color: var(--text-gray);
    margin-top: 24px;
}

.milestone-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.milestone-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
}

.milestone-item {
    display: grid;
    grid-template-columns: 1fr 100px 1fr;
    gap: 40px;
    margin-bottom: 40px;
    align-items: center;
}

.milestone-item:nth-child(odd) .milestone-year {
    grid-column: 2;
    grid-row: 1;
}

.milestone-item:nth-child(odd) .milestone-content {
    grid-column: 3;
    grid-row: 1;
}

.milestone-item:nth-child(even) .milestone-year {
    grid-column: 2;
    grid-row: 1;
}

.milestone-item:nth-child(even) .milestone-content {
    grid-column: 1;
    grid-row: 1;
}

.milestone-year {
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.year-circle {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: white;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
    position: relative;
    transition: all 0.3s ease;
}

.year-circle::before {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0.2;
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.1;
    }
    100% {
        transform: scale(1);
        opacity: 0.2;
    }
}

.milestone-item:hover .year-circle {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
}

.milestone-content {
    min-width: 0;
}

.milestone-card {
    background: white;
    padding: 28px 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
}

.milestone-card::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 2px;
    background: var(--primary);
}

.milestone-item:nth-child(odd) .milestone-card::before {
    left: -20px;
    transform: translateY(-50%);
}

.milestone-item:nth-child(even) .milestone-card::before {
    right: -20px;
    transform: translateY(-50%);
}

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

.milestone-text {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.8;
    margin: 0;
}

/* 奇数项向右动画 */
.milestone-item:nth-child(odd) .milestone-card:hover {
    transform: translateY(-5px) translateX(5px);
}

/* 偶数项向左动画 */
.milestone-item:nth-child(even) .milestone-card:hover {
    transform: translateY(-5px) translateX(-5px);
}

/* ==================== 资质证书 ==================== */
.certificates-section {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--border);
}

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

.certificates-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.certificates-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.certificates-subtitle {
    font-size: 16px;
    color: var(--text-gray);
    margin-top: 24px;
}

.certificates-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.certificates-wrapper {
    flex: 1;
    overflow: hidden;
}

.certificates-grid {
    display: flex;
    gap: 20px;
    transition: transform 0.5s ease;
}

.certificate-item {
    position: relative;
    flex-shrink: 0;
    width: 200px;
    overflow: hidden;
    border-radius: 12px;
    background: white;
    border: 1px solid var(--border);
    transition: all 0.4s ease;
}

.certificate-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.certificate-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 141.4%; /* A4纸竖版比例 (297/210) */
    overflow: hidden;
    background: var(--bg-light);
}

/* 横版证书 */
.certificate-landscape {
    width: 280px;
}

.certificate-landscape .certificate-image-wrapper {
    padding-top: 70.7%; /* A4纸横版比例 (210/297) */
}

.certificate-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.certificate-item:hover .certificate-image {
    transform: scale(1.1);
}

/* 导航按钮 */
.cert-nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    background: white;
    color: var(--primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.cert-nav-btn:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.cert-nav-btn:disabled {
    border-color: var(--border);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.5;
}

/* ==================== 联系我们 ==================== */
.contact {
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(14, 165, 233, 0.03) 0%, transparent 50%);
}

.contact .section-tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.contact .section-title {
    color: var(--text-dark);
}

.contact .section-subtitle {
    color: var(--text-gray);
}

.contact-content {
    position: relative;
    z-index: 1;
}

.contact-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.contact-card:hover::before {
    opacity: 1;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.contact-card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
}

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

.contact-card-icon i {
    font-size: 36px;
    color: white;
}

.contact-card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.contact-card-link {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.contact-card-link:hover {
    color: var(--primary-dark);
    transform: scale(1.05);
}

.contact-card-desc {
    font-size: 14px;
    color: var(--text-gray);
    margin: 0;
    position: relative;
    z-index: 1;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--gradient-dark);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-logo {
    height: 50px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-tagline {
    font-size: 18px;
    color: var(--accent);
    margin-bottom: 24px;
    font-weight: 500;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: white;
}

.footer-column ul {
    list-style: none;
}

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

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 15px;
}

.footer-column a:hover {
    color: white;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 动画效果 ==================== */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ==================== 响应式设计 ==================== */

/* iOS Safari 特殊修复 */
@supports (-webkit-touch-callout: none) {
    .navbar {
        position: -webkit-sticky;
        position: sticky;
        top: 0;
    }
    
    /* 防止 iOS Safari 地址栏导致的跳动 */
    body {
        position: relative;
        overflow-x: hidden;
    }
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .visual-container {
        height: 400px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    /* 移动端轮播优化 */
    .solution-card {
        padding: 30px;
    }
    
    .card-carousel {
        min-height: 180px;
    }
    
    .carousel-track {
        touch-action: pan-y; /* 允许垂直滚动，但拦截水平滑动 */
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-nav-btn {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    /* 合作伙伴响应式 */
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    /* 修复移动端地址栏隐藏导致的导航栏跳动 */
    html {
        height: -webkit-fill-available;
    }
    
    body {
        min-height: 100vh;
        min-height: -webkit-fill-available;
    }
    
    /* 确保导航栏始终固定在顶部 */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        transform: translate3d(0, 0, 0);
        -webkit-transform: translate3d(0, 0, 0);
        will-change: auto;
    }
    
    .nav-brand {
        gap: 8px;
    }
    
    .brand-tagline {
        font-size: 12px;
        padding: 4px 12px;
    }
    
    /* 移动端导航遮罩 */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(5px);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        height: 100%;
        width: 70%;
        max-width: 300px;
        z-index: 999;
        pointer-events: none;
    }
    
    .nav-menu.active {
        pointer-events: auto;
    }
    
    .nav-list {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background: white;
        flex-direction: column;
        padding: 80px 30px 30px;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        gap: 0;
        z-index: 999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active .nav-list {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-link {
        display: block;
        padding: 16px 0;
        font-size: 16px;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-cta {
        margin-top: 20px;
        text-align: center;
        border-radius: 12px;
    }
    
    .nav-toggle {
        display: flex;
        position: relative;
        z-index: 1001;
        width: 30px;
        height: 30px;
        justify-content: center;
        align-items: center;
    }
    
    .nav-toggle span {
        position: absolute;
        width: 24px;
        height: 2px;
        transition: all 0.3s ease;
    }
    
    .nav-toggle span:nth-child(1) {
        top: 8px;
    }
    
    .nav-toggle span:nth-child(2) {
        top: 14px;
    }
    
    .nav-toggle span:nth-child(3) {
        top: 20px;
    }
    
    .nav-toggle.active span:nth-child(1) {
        top: 14px;
        transform: rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        top: 14px;
        transform: rotate(-45deg);
    }
    
    /* 禁止页面滚动 - 保持滚动位置 */
    body.nav-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
        left: 0;
        right: 0;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    /* 移动端优化：缩小中央火箭图标和圆圈 */
    .central-icon {
        width: 100px;
        height: 100px;
    }
    
    .central-icon i {
        font-size: 42px;
    }
    
    .icon-ring {
        border-width: 2px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    /* 移动端解决方案卡片优化 */
    .solution-card {
        padding: 24px;
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 16px;
    }
    
    .card-icon i {
        font-size: 28px;
    }
    
    .card-title {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    .card-carousel {
        min-height: 160px;
        margin-bottom: 16px;
    }
    
    .card-description {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 16px;
    }
    
    .carousel-dots {
        margin-top: 12px;
    }
    
    .carousel-dots .dot {
        width: 6px;
        height: 6px;
    }
    
    .carousel-dots .dot.active {
        width: 20px;
    }
    
    .tag {
        padding: 5px 12px;
        font-size: 12px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-container {
        gap: 12px;
    }
    
    .case-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .case-card {
        padding: 28px;
        min-height: auto;
    }
    
    .case-icon {
        width: 70px;
        height: 70px;
        margin-bottom: 20px;
    }
    
    .case-icon i {
        font-size: 32px;
    }
    
    .case-title {
        font-size: 18px;
        margin-bottom: 14px;
    }
    
    .case-description {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 18px;
    }
    
    .case-tags {
        gap: 6px;
    }
    
    .case-tags span {
        padding: 5px 12px;
        font-size: 11px;
    }
    
    .workflow-timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        grid-template-columns: 60px 1fr;
        gap: 16px;
    }
    
    .timeline-number {
        width: 60px;
        height: 60px;
        font-size: 22px;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        grid-column: 2;
    }
    
    .timeline-item:nth-child(even) .timeline-number {
        grid-column: 1;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-header {
        gap: 12px;
        margin-bottom: 12px;
    }
    
    .timeline-icon {
        width: 48px;
        height: 48px;
    }
    
    .timeline-icon i {
        font-size: 22px;
    }
    
    .timeline-title {
        font-size: 17px;
        line-height: 1.3;
    }
    
    .timeline-description {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .timeline-content:hover,
    .timeline-item:nth-child(even) .timeline-content:hover {
        transform: translateX(5px);
    }
    
    .visual-grid {
        grid-template-columns: 1fr;
    }
    
    /* 发展历程移动端优化 */
    .milestone-section {
        margin-top: 60px;
        padding-top: 40px;
    }
    
    .milestone-header {
        margin-bottom: 40px;
    }
    
    .milestone-title {
        font-size: 28px;
    }
    
    .milestone-subtitle {
        font-size: 14px;
    }
    
    .milestone-timeline {
        padding-left: 0;
    }
    
    .milestone-timeline::before {
        left: 50px;
    }
    
    .milestone-item {
        grid-template-columns: 100px 1fr;
        gap: 24px;
        margin-bottom: 30px;
    }
    
    .milestone-item:nth-child(even) .milestone-content {
        grid-column: 2;
        grid-row: 1;
    }
    
    .milestone-item:nth-child(even) .milestone-year {
        grid-column: 1;
        grid-row: 1;
    }
    
    .milestone-item:nth-child(odd) .milestone-content {
        grid-column: 2;
    }
    
    .milestone-item:nth-child(odd) .milestone-year {
        grid-column: 1;
    }
    
    .milestone-year {
        justify-content: center;
    }
    
    .year-circle {
        width: 80px;
        height: 80px;
        font-size: 15px;
    }
    
    .year-circle::before {
        width: 95px;
        height: 95px;
    }
    
    .milestone-card {
        padding: 20px 24px;
        position: relative;
    }
    
    .milestone-card::before {
        content: '';
        position: absolute;
        left: -24px;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 2px;
        background: var(--primary);
    }
    
    .milestone-text {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .milestone-item:nth-child(odd) .milestone-card:hover,
    .milestone-item:nth-child(even) .milestone-card:hover {
        transform: translateY(-5px) translateX(0);
    }
    
    /* 资质证书移动端优化 */
    .certificates-section {
        margin-top: 60px;
        padding-top: 40px;
    }
    
    .certificates-header {
        margin-bottom: 40px;
    }
    
    .certificates-title {
        font-size: 28px;
    }
    
    .certificates-subtitle {
        font-size: 14px;
    }
    
    .certificates-container {
        gap: 12px;
    }
    
    .cert-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .certificate-item {
        width: 160px;
    }
    
    .certificate-landscape {
        width: 220px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .contact-info-centered {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 联系我们卡片单列显示 */
    .contact-cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 合作伙伴移动端优化 */
    .partners {
        padding: 60px 0;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .partner-item {
        padding: 24px;
        min-height: 100px;
    }
    
    .partner-logo {
        max-height: 50px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    /* 合作伙伴超小屏幕优化 */
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .partner-item {
        padding: 20px;
        min-height: 90px;
    }
    
    .partner-logo {
        max-height: 45px;
    }
    
    /* 发展历程超小屏幕优化 */
    .milestone-section {
        margin-top: 50px;
        padding-top: 30px;
    }
    
    .milestone-header {
        margin-bottom: 30px;
    }
    
    .milestone-title {
        font-size: 24px;
    }
    
    .milestone-timeline::before {
        left: 35px;
    }
    
    .milestone-item {
        grid-template-columns: 70px 1fr;
        gap: 20px;
        margin-bottom: 24px;
    }
    
    .year-circle {
        width: 70px;
        height: 70px;
        font-size: 13px;
    }
    
    .year-circle::before {
        width: 85px;
        height: 85px;
    }
    
    .milestone-card {
        padding: 16px 20px;
    }
    
    .milestone-card::before {
        left: -20px;
        width: 20px;
    }
    
    .milestone-text {
        font-size: 13px;
    }
    
    /* 资质证书超小屏幕优化 */
    .certificates-section {
        margin-top: 50px;
        padding-top: 30px;
    }
    
    .certificates-header {
        margin-bottom: 30px;
    }
    
    .certificates-title {
        font-size: 24px;
    }
    
    .certificates-container {
        gap: 8px;
    }
    
    .cert-nav-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .certificate-item {
        width: 140px;
    }
    
    .certificate-landscape {
        width: 200px;
    }
}