/* ========================================
   关于页面样式 - 炫酷庄重版
   ======================================== */

:root {
    --primary-color: #2196F3;
    --primary-dark: #1565C0;
    --primary-light: #e3f2fd;
    --primary-gradient: linear-gradient(135deg, #2196F3 0%, #1565C0 100%);
    --text-primary: #1a1a1a;
    --text-secondary: #555;
    --text-muted: #888;
    --bg-white: #fff;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-primary: 0 8px 30px rgba(33, 150, 243, 0.3);
}

/* ========================================
   动画定义
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

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

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

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

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

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

.animate-fade-in { animation: fadeIn 0.8s ease forwards; }
.animate-fade-in-up { animation: fadeInUp 0.8s ease forwards; }
.delay-1 { animation-delay: 0.2s; opacity: 0; }
.delay-2 { animation-delay: 0.4s; opacity: 0; }
.delay-3 { animation-delay: 0.6s; opacity: 0; }

/* 滚动显示动画 */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   通用组件
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light {
    color: #fff;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.section-header.light .section-tag {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-header.light h2 {
    color: #fff;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    margin: 0 auto;
    border-radius: 2px;
}

/* ========================================
   Hero Banner
   ======================================== */
.about-hero {
    position: relative;
    padding: 200px 0 120px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.15) 0%, rgba(33, 150, 243, 0.05) 100%);
}

.shape-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 20%;
    animation: float 6s ease-in-out infinite;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../img/ports-6-scaled.webp') center/cover;
    opacity: 0.08;
}

.about-hero-container {
    position: relative;
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: rgba(33, 150, 243, 0.2);
    border: 1px solid rgba(33, 150, 243, 0.3);
    border-radius: 30px;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.hero-badge svg {
    width: 18px;
    height: 18px;
    stroke: var(--primary-color);
}

.hero-badge span {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
}

.about-hero h1 {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-hero .hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

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

.hero-stat .stat-num {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 8px;
}

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

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    animation: bounce 2s infinite;
}

.hero-scroll-indicator span {
    font-size: 12px;
    letter-spacing: 1px;
}

.hero-scroll-indicator svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   品牌故事
   ======================================== */
.brand-story {
    padding: 100px 0;
    background: var(--bg-white);
}

.story-container {
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
}

.story-intro {
    display: flex;
    gap: 32px;
    padding: 40px;
    background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin-bottom: 60px;
    box-shadow: var(--shadow-sm);
}

.story-intro-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-primary);
}

.story-intro-icon svg {
    width: 40px;
    height: 40px;
    stroke: #fff;
}

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

.story-intro-content p:last-child {
    margin-bottom: 0;
}

/* 痛点区域 */
.pain-section {
    margin-bottom: 60px;
}

.pain-title, .cases-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.title-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.title-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--primary-color);
}

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

.pain-item {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

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

.pain-item:hover .pain-icon-bg {
    transform: scale(1.2);
}

.pain-icon-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.pain-icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-light);
    border-radius: 50%;
    transition: transform 0.4s ease;
}

.pain-icon-wrapper svg {
    position: relative;
    width: 36px;
    height: 36px;
    stroke: var(--primary-color);
    z-index: 1;
    margin-top: 22px;
}

.pain-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

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

.pain-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 48px;
    font-weight: 700;
    color: rgba(33, 150, 243, 0.08);
    line-height: 1;
}

/* 案例区域 */
.cases-section {
    margin-bottom: 60px;
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.case-card {
    position: relative;
    padding: 32px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.4s ease;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform 0.4s ease;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.case-card:hover::before {
    transform: scaleY(1);
}

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

.case-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.case-tag {
    padding: 4px 12px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 12px;
}

.case-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.case-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.case-result {
    padding: 12px 16px;
    background: rgba(33, 150, 243, 0.08);
    border-radius: 8px;
}

.case-result span {
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-dark);
}

/* 使命区域 */
.story-mission {
    position: relative;
    padding: 60px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: 24px;
    text-align: center;
    overflow: hidden;
}

.mission-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(rgba(33, 150, 243, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
}

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

.mission-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    box-shadow: 0 0 40px rgba(33, 150, 243, 0.4);
}

.mission-icon svg {
    width: 40px;
    height: 40px;
    stroke: #fff;
}

.story-mission h3 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
}

.story-mission p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    line-height: 1.9;
    margin-bottom: 16px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.story-mission .highlight {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 24px;
}


/* ========================================
   创始人介绍
   ======================================== */
.founder-section {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden;
}

.founder-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.founder-shape {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(33, 150, 243, 0.1) 0%, transparent 70%);
}

.founder-shape-1 {
    width: 500px;
    height: 500px;
    top: -100px;
    left: -100px;
}

.founder-shape-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    right: -100px;
}

.founder-container {
    position: relative;
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
    z-index: 1;
}

.founder-profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 60px;
}

.founder-avatar-wrapper {
    position: relative;
    width: 180px;
    height: 180px;
    margin-bottom: 24px;
}

.avatar-ring {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid rgba(33, 150, 243, 0.3);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.avatar-ring.ring-2 {
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border-color: rgba(33, 150, 243, 0.15);
    animation-direction: reverse;
    animation-duration: 30s;
}

.founder-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border: 4px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(33, 150, 243, 0.3);
}

.founder-avatar img {
    width: 85%;
    height: auto;
}

.founder-info {
    text-align: center;
}

.founder-info h3 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.founder-title {
    font-size: 16px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}

.founder-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.founder-badges .badge {
    padding: 6px 16px;
    background: rgba(33, 150, 243, 0.2);
    border: 1px solid rgba(33, 150, 243, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--primary-color);
}

.founder-intro {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    margin-bottom: 60px;
    backdrop-filter: blur(10px);
}

.intro-icon-wrapper {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-icon-wrapper svg {
    width: 30px;
    height: 30px;
    stroke: #fff;
}

.founder-intro p {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    line-height: 1.9;
}

/* 时间线 */
.founder-timeline {
    margin-bottom: 60px;
}

.timeline-title, .industries-title, .expertise-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 32px;
}

.timeline-title svg, .industries-title svg, .expertise-title svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.timeline-items {
    position: relative;
    padding-left: 40px;
}

.timeline-items::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color) 0%, rgba(33, 150, 243, 0.2) 100%);
}

.timeline-item {
    position: relative;
    padding: 28px 32px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    margin-bottom: 20px;
    margin-left: 20px;
    transition: all 0.4s ease;
}

.timeline-item:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(33, 150, 243, 0.3);
    transform: translateX(8px);
}

.timeline-marker {
    position: absolute;
    left: -52px;
    top: 32px;
}

.marker-dot {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid #0f172a;
}

.marker-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.timeline-phase {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 12px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.timeline-content h5 {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.timeline-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

/* 行业标签 */
.founder-industries {
    margin-bottom: 60px;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.industry-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 25px;
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    transition: all 0.3s ease;
}

.industry-tag svg {
    width: 16px;
    height: 16px;
    stroke: var(--primary-color);
}

.industry-tag:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.industry-tag:hover svg {
    stroke: #fff;
}

/* 专长领域 */
.founder-expertise {
    margin-bottom: 60px;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.expertise-item {
    padding: 28px 24px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    text-align: center;
    transition: all 0.4s ease;
}

.expertise-item:hover {
    background: rgba(33, 150, 243, 0.1);
    border-color: rgba(33, 150, 243, 0.3);
    transform: translateY(-6px);
}

.expertise-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.2) 0%, rgba(33, 150, 243, 0.1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: all 0.4s ease;
}

.expertise-item:hover .expertise-icon {
    background: var(--primary-gradient);
    box-shadow: var(--shadow-primary);
}

.expertise-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-color);
    transition: stroke 0.3s ease;
}

.expertise-item:hover .expertise-icon svg {
    stroke: #fff;
}

.expertise-item p {
    font-size: 15px;
    color: rgba(255,255,255,0.85);
    line-height: 1.5;
}

/* 创始人语录 */
.founder-quote {
    position: relative;
    padding: 48px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    overflow: hidden;
}

.founder-quote::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
}

.quote-icon {
    position: absolute;
    top: 24px;
    right: 32px;
    opacity: 0.1;
}

.quote-icon svg {
    width: 60px;
    height: 60px;
    fill: var(--primary-color);
}

.founder-quote h4 {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 24px;
}

.founder-quote blockquote {
    margin: 0;
}

.founder-quote blockquote p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    font-style: italic;
    line-height: 2;
    margin-bottom: 16px;
    padding-left: 20px;
    border-left: 2px solid rgba(33, 150, 243, 0.3);
}

.founder-quote blockquote p:last-child {
    margin-bottom: 0;
}


/* ========================================
   服务原则
   ======================================== */
.principles-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.principles-container {
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.principle-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 32px 24px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.principle-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.principle-card:hover .principle-icon-bg {
    transform: scale(1.15);
}

.principle-icon-wrapper {
    position: relative;
    flex-shrink: 0;
    width: 72px;
    height: 72px;
}

.principle-icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-light);
    border-radius: 18px;
    transition: transform 0.4s ease;
}

.principle-icon-wrapper svg {
    position: relative;
    width: 32px;
    height: 32px;
    stroke: var(--primary-color);
    z-index: 1;
    margin: 20px;
}

.principle-content {
    flex: 1;
}

.principle-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.principle-subtitle {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

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

.principle-number {
    position: absolute;
    bottom: 16px;
    right: 24px;
    font-size: 56px;
    font-weight: 700;
    color: rgba(33, 150, 243, 0.06);
    line-height: 1;
}

/* ========================================
   资质与背书
   ======================================== */
.credentials-section {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden;
}

.credentials-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(rgba(33, 150, 243, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
}

.credentials-container {
    position: relative;
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.stat-item {
    position: relative;
    padding: 40px 32px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.stat-item:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-6px);
}

.stat-item:hover::before {
    transform: scaleX(1);
}

.stat-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.2) 0%, rgba(33, 150, 243, 0.1) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-color);
}

.stat-number {
    font-size: 56px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.stat-plus {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-left: 4px;
}

.stat-label {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin: 12px 0 8px;
}

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

/* 客户评价 */
.testimonials-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 40px;
}

.testimonials-title svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-color);
}

.testimonial-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.testimonial-card {
    position: relative;
    padding: 36px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    transition: all 0.4s ease;
}

.testimonial-card:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-4px);
}

.testimonial-quote-icon {
    position: absolute;
    top: 24px;
    right: 24px;
    opacity: 0.15;
}

.testimonial-quote-icon svg {
    width: 40px;
    height: 40px;
    fill: var(--primary-color);
}

.testimonial-card > p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    line-height: 1.9;
    font-style: italic;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.2) 0%, rgba(33, 150, 243, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.author-name {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
}

.author-company {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
}

/* ========================================
   CTA区域
   ======================================== */
.about-cta {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.cta-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.cta-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.cta-shape-1 {
    width: 400px;
    height: 400px;
    top: -150px;
    right: -100px;
}

.cta-shape-2 {
    width: 300px;
    height: 300px;
    bottom: -100px;
    left: -50px;
}

.about-cta .cta-container {
    position: relative;
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
    z-index: 1;
}

.cta-icon {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    backdrop-filter: blur(10px);
}

.cta-icon svg {
    width: 36px;
    height: 36px;
    stroke: #fff;
}

.about-cta h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
}

.cta-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.cta-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: #fff;
}

.cta-list li svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
}

.cta-note {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.cta-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 40px;
    background: #fff;
    color: var(--primary-color);
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-btn-primary svg {
    width: 20px;
    height: 20px;
    stroke: var(--primary-color);
}

.cta-btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.cta-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 40px;
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.4s ease;
}

.cta-btn-outline svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
}

.cta-btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #fff;
}

.cta-promise {
    display: flex;
    justify-content: center;
    gap: 32px;
}

.promise-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.9);
}

.promise-item svg {
    width: 18px;
    height: 18px;
    stroke: #fff;
}

/* ========================================
   服务方法论
   ======================================== */
.methodology-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.methodology-container {
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
}

/* 流程图 */
.methodology-flow {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.flow-step {
    flex: 1;
    max-width: 320px;
    padding: 32px 24px 28px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
    border: 2px solid var(--primary-color);
    border-radius: 16px;
    text-align: center;
    position: relative;
    transition: all 0.4s ease;
}

.flow-step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-primary);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-primary);
}

.step-icon svg {
    width: 32px;
    height: 32px;
    stroke: #fff;
}

.flow-step h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.step-duration {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
    margin-bottom: 16px;
}

.flow-step ul {
    list-style: none;
    text-align: left;
}

.flow-step ul li {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 16px;
    position: relative;
}

.flow-step ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

.flow-arrow {
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.flow-arrow svg {
    width: 32px;
    height: 32px;
    stroke: var(--primary-color);
}

/* 合并的方法卡片 */
.methodology-cards {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 24px;
    margin-bottom: 60px;
}

.method-card {
    flex: 1;
    max-width: 340px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: visible;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-sm);
    margin-top: 16px;
}

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

.method-card-summary {
    padding: 32px 24px 24px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    border-radius: 16px 16px 0 0;
}

.method-card-summary .step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-primary);
}

.method-card-summary .step-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: var(--shadow-primary);
}

.method-card-summary .step-icon svg {
    width: 28px;
    height: 28px;
    stroke: #fff;
}

.method-card-summary h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.method-card-summary .step-duration {
    display: inline-block;
    padding: 4px 14px;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
    margin-bottom: 16px;
}

.method-card-summary .summary-list {
    list-style: none;
    text-align: left;
}

.method-card-summary .summary-list li {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 16px;
    position: relative;
}

.method-card-summary .summary-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

.method-card-detail {
    padding: 24px;
    background: var(--bg-white);
    border-radius: 0 0 16px 16px;
}

.method-card-detail ul {
    list-style: none;
    margin-bottom: 20px;
}

.method-card-detail ul li {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 16px;
    position: relative;
    margin-bottom: 6px;
}

.method-card-detail ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

.method-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: center;
}

.method-arrow svg {
    width: 32px;
    height: 32px;
    stroke: var(--primary-color);
}

/* 详细说明卡片 */
.methodology-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.detail-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.detail-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
    border-bottom: 1px solid var(--border-color);
}

.detail-header svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.detail-header h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
}

.detail-content {
    padding: 24px;
}

.detail-content ul {
    list-style: none;
    margin-bottom: 20px;
}

.detail-content ul li {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 16px;
    position: relative;
    margin-bottom: 8px;
}

.detail-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

.detail-deliverables {
    padding-top: 16px;
    border-top: 1px dashed var(--border-color);
}

.deliverables-title {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.deliverables-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.deliverables-list span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.deliverables-list svg {
    width: 16px;
    height: 16px;
    stroke: #22c55e;
}

/* 差异对比表 */
.methodology-comparison {
    max-width: 800px;
    margin: 0 auto;
}

.comparison-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 32px;
}

.comparison-table {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.comparison-header .comparison-col {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.comparison-header .comparison-col svg {
    width: 20px;
    height: 20px;
}

.comparison-header .traditional {
    background: var(--bg-light);
    color: var(--text-muted);
}

.comparison-header .traditional svg {
    stroke: var(--text-muted);
}

.comparison-header .ours {
    background: var(--primary-light);
    color: var(--primary-color);
}

.comparison-header .ours svg {
    stroke: var(--primary-color);
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--border-color);
}

.comparison-row .comparison-col {
    padding: 16px 24px;
    font-size: 15px;
    text-align: center;
}

.comparison-row .traditional {
    color: var(--text-muted);
    background: var(--bg-white);
}

.comparison-row .ours {
    color: var(--primary-dark);
    background: rgba(33, 150, 243, 0.05);
    font-weight: 500;
}

/* ========================================
   资源网络
   ======================================== */
.resources-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.resources-container {
    width: 62.5%;
    max-width: none;
    margin: 0 auto;
}

.resources-intro {
    font-size: 17px;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.8;
    margin-bottom: 48px;
    white-space: nowrap;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.resource-card {
    padding: 36px 28px;
    background: linear-gradient(135deg, var(--bg-white) 0%, #f8fafc 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.resource-icon {
    width: 72px;
    height: 72px;
    background: var(--primary-gradient);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: var(--shadow-primary);
}

.resource-icon svg {
    width: 36px;
    height: 36px;
    stroke: #fff;
}

.resource-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.resource-card ul {
    list-style: none;
    text-align: left;
    display: inline-block;
}

.resource-card ul li {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
    white-space: nowrap;
}

.resource-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

.resources-note {
    text-align: center;
    padding: 24px 32px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #e3f2fd 100%);
    border-radius: 12px;
}

.resources-note p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    white-space: nowrap;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .about-hero-container,
    .story-container,
    .founder-container,
    .principles-container,
    .credentials-container,
    .methodology-container,
    .resources-container,
    .about-cta .cta-container {
        width: 80%;
    }
    
    .about-hero h1 {
        font-size: 42px;
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .methodology-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .about-hero-container,
    .story-container,
    .founder-container,
    .principles-container,
    .credentials-container,
    .methodology-container,
    .resources-container,
    .about-cta .cta-container {
        width: 90%;
    }
    
    .about-hero h1 {
        font-size: 36px;
    }
    
    .hero-stat .stat-num {
        font-size: 40px;
    }
    
    .pain-points {
        grid-template-columns: 1fr;
    }
    
    .case-cards {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .principles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-cards {
        grid-template-columns: 1fr;
    }
    
    .methodology-flow {
        flex-direction: column;
        align-items: center;
    }
    
    .flow-step {
        max-width: 100%;
        width: 100%;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
        padding: 16px 0;
    }
    
    .methodology-cards {
        flex-direction: column;
        align-items: center;
    }
    
    .method-card {
        max-width: 100%;
        width: 100%;
    }
    
    .method-arrow {
        transform: rotate(90deg);
        padding: 16px 0;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* 防止横向滚动 */
    html, body {
        overflow-x: hidden !important;
        max-width: 100vw !important;
    }
    
    .about-hero {
        padding: 160px 0 100px;
        overflow-x: hidden;
    }
    
    .about-hero h1 {
        font-size: 30px;
    }
    
    /* 隐藏向下滚动提示 */
    .hero-scroll-indicator {
        display: none !important;
    }
    
    /* 防止背景形状导致横向滚动 */
    .hero-bg-shapes,
    .founder-bg-shapes,
    .cta-bg-shapes {
        overflow: hidden;
    }
    
    .shape,
    .founder-shape,
    .cta-shape {
        max-width: 100vw;
    }
    
    /* 允许文本换行，防止横向滚动 */
    .resources-intro,
    .resource-card ul li,
    .resources-note p {
        white-space: normal !important;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .story-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .story-intro-icon {
        margin: 0 auto;
    }
    
    .founder-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .intro-icon-wrapper {
        margin: 0 auto;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }
    
    .cta-btn-primary,
    .cta-btn-outline {
        flex: 0 0 auto;
        padding: 12px 20px;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .cta-promise {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: center;
        gap: 16px;
    }
    
    .promise-item {
        font-size: 12px;
        white-space: nowrap;
    }
    
    .promise-item svg {
        width: 14px;
        height: 14px;
    }
    
    .about-cta h2 {
        font-size: 28px;
    }
    
    /* 对比表格移动端优化 */
    .methodology-comparison {
        width: 100%;
        max-width: 100%;
    }
    
    .comparison-table {
        width: 100%;
    }
    
    .comparison-header,
    .comparison-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
    
    .comparison-header .comparison-col,
    .comparison-row .comparison-col {
        padding: 12px 10px;
        font-size: 13px;
        text-align: center;
        word-break: break-word;
    }
}

@media (max-width: 480px) {
    .about-hero-container,
    .story-container,
    .founder-container,
    .principles-container,
    .credentials-container,
    .methodology-container,
    .resources-container,
    .about-cta .cta-container {
        width: 92%;
    }
    
    .about-hero h1 {
        font-size: 26px;
    }
    
    .founder-avatar-wrapper {
        width: 140px;
        height: 140px;
    }
    
    .stat-number {
        font-size: 42px;
    }
    
    .industry-tag {
        font-size: 12px;
        padding: 8px 14px;
    }
    
    .principle-card {
        flex-direction: column;
        text-align: center;
    }
    
    .principle-icon-wrapper {
        margin: 0 auto;
    }
    
    .principle-number {
        display: none;
    }
    
    .comparison-table {
        font-size: 13px;
    }
    
    .comparison-header .comparison-col,
    .comparison-row .comparison-col {
        padding: 12px 16px;
    }
}


/* ========================================
   移动端优化补充 - 768px
   ======================================== */
@media (max-width: 768px) {
    /* 故事时间线 */
    .story-timeline {
        padding-left: 20px;
    }
    
    .timeline-item {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .timeline-icon {
        width: 44px;
        height: 44px;
    }
    
    .timeline-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .timeline-content h3 {
        font-size: 18px;
    }
    
    .timeline-content p {
        font-size: 14px;
    }
    
    /* 原则卡片 */
    .principles-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .principle-card {
        padding: 24px 20px;
    }
    
    .principle-icon {
        width: 50px;
        height: 50px;
    }
    
    /* 资质认证 */
    .credentials-grid {
        grid-template-columns: 1fr;
    }
    
    .credential-card {
        padding: 20px;
    }
    
    /* 方法论 */
    .methodology-steps {
        gap: 20px;
    }
    
    .methodology-step {
        padding: 24px 20px;
    }
}

/* ========================================
   移动端优化补充 - 480px
   ======================================== */
@media (max-width: 480px) {
    .about-hero {
        padding: 120px 0 60px;
    }
    
    .about-hero h1 {
        font-size: 24px;
    }
    
    .about-hero p {
        font-size: 14px;
    }
    
    .hero-subtitle {
        font-size: 15px;
    }
    
    .hero-stats .stat-number {
        font-size: 28px;
    }
    
    .hero-stats .stat-label {
        font-size: 12px;
    }
    
    .section-header h2 {
        font-size: 22px;
    }
    
    .timeline-item {
        padding: 16px;
    }
    
    .timeline-content h3 {
        font-size: 16px;
    }
    
    .principle-card {
        padding: 20px 16px;
    }
    
    .principle-icon {
        width: 44px;
        height: 44px;
    }
}