/* ========== 平台介绍区域 ========== */
.platform-section {
    padding: 4rem 0;
    background: #fff;
    position: relative;
}
.section-top-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59,130,246,0.2), transparent);
}
.platform-logo-wrapper {
    position: relative;
    display: inline-block;
}
.platform-logo-glow {
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #06b6d4);
    border-radius: 24px;
    filter: blur(20px);
    opacity: 0.4;
}
.platform-logo-box {
    position: relative;
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
    text-align: center;
}
.platform-logo-img {
    width: 100%;
    max-width: 320px;
    padding: 2rem;
}
.platform-content {
    margin-bottom: 1.5rem;
}
.section-decor {
    display: inline-block;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    border-radius: 2px;
    margin-bottom: 1rem;
}
.platform-title {
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
}
.platform-desc {
    color: #475569;
    font-size: 1rem;
    line-height: 1.9;
    margin-top: 1rem;
}
.stat-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem 1.25rem;
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-number-blue {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
}
.stat-number-purple {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
}
.stat-number-cyan {
    background: linear-gradient(135deg, #06b6d4, #22d3ee);
    -webkit-background-clip: text;
    background-clip: text;
}
.stat-number-pink {
    background: linear-gradient(135deg, #ec4899, #f472b6);
    -webkit-background-clip: text;
    background-clip: text;
}
.stat-label {
    color: #64748b;
    font-size: 0.82rem;
    margin-top: 0.25rem;
}

/* ========== 核心能力区域 ========== */
.capability-section {
    padding: 5rem 0;
    background: #f8fafc;
    position: relative;
    overflow: hidden;
}
.capability-dot-bg {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(59,130,246,0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
}
.capability-container {
    position: relative;
    z-index: 1;
}
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
}
.section-subtitle {
    color: #64748b;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}
.about-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
    cursor: default;
}
.about-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08), 0 0 0 1px rgba(59,130,246,0.1) inset;
}
.card-top-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}
.card-line-blue { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.card-line-purple { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.card-line-cyan { background: linear-gradient(90deg, #06b6d4, #22d3ee); }
.card-line-pink { background: linear-gradient(90deg, #ec4899, #f472b6); }
.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.25rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}
.card-icon-blue { background: #eff6ff; }
.card-icon-purple { background: #f5f3ff; }
.card-icon-cyan { background: #ecfeff; }
.card-icon-pink { background: #fdf2f8; }
.card-title {
    color: #0f172a;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}
.card-desc {
    color: #64748b;
    font-size: 0.84rem;
    line-height: 1.7;
}

/* ========== 联系我们区域 ========== */
.contact-section {
    padding: 5rem 0;
    background: #fff;
    position: relative;
}
.contact-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}
.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.contact-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.contact-icon-address { background: #eff6ff; color: #3b82f6; }
.contact-icon-phone { background: #f5f3ff; color: #8b5cf6; }
.contact-icon-email { background: #ecfeff; color: #06b6d4; }
.contact-label {
    color: #0f172a;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}
.contact-value {
    color: #64748b;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
}
.contact-phone {
    font-size: 1.05rem;
    font-weight: 600;
}

/* ========== 动画 ========== */
@keyframes about-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 6px #3b82f6; }
    50% { opacity: 0.5; box-shadow: 0 0 16px #3b82f6; }
}