/* 关于我们 /AboutUs/ 与 公司简介 /CompanyProfile/ 共用 */
:root {
    --au-primary: #1e40af;
    --au-primary-light: #3b82f6;
    --au-primary-dark: #1e3a8a;
    --au-accent: #0ea5e9;
    --au-surface: #eff6ff;
}
.about-page { background: #f8fafc; color: #334155; line-height: 1.7; }
.about-page .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.about-page .product-banner {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 45%, #2563eb 100%);
}
.about-page .product-banner::after {
    background: radial-gradient(ellipse at 25% 0%, rgba(59,130,246,0.35) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 100%, rgba(14,165,233,0.2) 0%, transparent 50%);
}

.au-hero-stats { margin-top: -36px; position: relative; z-index: 3; padding-bottom: 10px; }
.au-hero-stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    background: #fff; border-radius: 16px; padding: 24px 28px;
    box-shadow: 0 12px 40px rgba(30,64,175,0.12); border: 1px solid rgba(30,64,175,0.08);
}
.au-stat { text-align: center; padding: 8px 12px; border-right: 1px solid #e2e8f0; }
.au-stat:last-child { border-right: none; }
.au-stat-num { display: block; font-size: 28px; font-weight: 700; color: var(--au-primary); margin-bottom: 4px; }
.au-stat-label { font-size: 13px; color: #64748b; }

.section-title {
    font-size: 28px; font-weight: 700; color: #0f172a; text-align: center;
    margin-bottom: 12px; padding-bottom: 18px; position: relative;
}
.section-title::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 70px; height: 4px; background: linear-gradient(90deg, var(--au-primary), var(--au-accent)); border-radius: 2px;
}
.section-desc { text-align: center; font-size: 15px; color: #64748b; max-width: 760px; margin: 0 auto 48px; line-height: 1.8; }

.intro-section { padding: 56px 0 80px; background: #fff; }
.intro-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; }
.intro-badge {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px;
    background: var(--au-surface); color: var(--au-primary); font-size: 13px; font-weight: 600;
    border-radius: 20px; border: 1px solid rgba(30,64,175,0.12); margin-bottom: 18px;
}
.intro-text h2 { font-size: 32px; font-weight: 700; color: #0f172a; margin-bottom: 14px; line-height: 1.35; }
.intro-subtitle { font-size: 16px; color: var(--au-primary); font-weight: 600; margin-bottom: 20px; }
.intro-text p { font-size: 15px; color: #64748b; line-height: 1.85; margin-bottom: 16px; }
.intro-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0; }
.intro-stat {
    text-align: center; padding: 20px 14px; background: var(--au-surface);
    border-radius: 14px; border: 1px solid rgba(30,64,175,0.08);
}
.intro-stat-num { font-size: 26px; font-weight: 700; color: var(--au-primary); margin-bottom: 4px; }
.intro-stat-label { font-size: 12px; color: #64748b; }
.intro-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.intro-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px;
    background: linear-gradient(135deg, var(--au-primary), var(--au-primary-light));
    color: #fff; font-size: 14px; font-weight: 600; border-radius: 10px; text-decoration: none; transition: all 0.3s;
}
.intro-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,64,175,0.3); }
.intro-btn-outline { background: #fff; color: var(--au-primary); border: 1px solid rgba(30,64,175,0.3); box-shadow: none; }
.intro-btn-outline:hover { background: var(--au-surface); }

.intro-cms { font-size: 15px; color: #64748b; line-height: 1.85; }
.intro-cms p { margin-bottom: 16px; }
.intro-cms h2, .intro-cms h3, .intro-cms h4 { color: #0f172a; font-weight: 700; margin: 24px 0 12px; line-height: 1.4; }
.intro-cms h2 { font-size: 22px; }
.intro-cms h3 { font-size: 18px; }
.intro-cms ul, .intro-cms ol { margin: 0 0 16px 20px; }
.intro-cms img {
    max-width: 100%; height: auto; border-radius: 12px; margin: 12px 0;
    border: 1px solid #e2e8f0; box-shadow: 0 4px 16px rgba(15,23,42,0.08);
}

.intro-visual { position: relative; }
.intro-image {
    height: 420px; border-radius: 20px; overflow: hidden;
    box-shadow: 0 20px 60px rgba(15,23,42,0.12); border: 1px solid #e2e8f0;
    background: linear-gradient(135deg, var(--au-primary-dark), var(--au-primary));
}
.intro-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.intro-image img.is-hidden { display: none; }
.intro-float {
    position: absolute; bottom: -20px; left: -20px; background: #fff;
    border-radius: 16px; padding: 20px 24px; box-shadow: 0 12px 40px rgba(15,23,42,0.12);
    border: 1px solid #e2e8f0; display: flex; align-items: center; gap: 14px;
}
.intro-float-icon {
    width: 52px; height: 52px; border-radius: 14px;
    background: var(--au-surface); color: var(--au-primary);
    display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.intro-float strong { display: block; font-size: 15px; color: #0f172a; margin-bottom: 2px; }
.intro-float span { font-size: 12px; color: #64748b; }

.nav-section { padding: 0 0 80px; background: #fff; }
.nav-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.nav-card {
    display: flex; align-items: center; gap: 20px; padding: 28px 32px;
    background: linear-gradient(135deg, var(--au-surface), #fff);
    border: 1px solid rgba(30,64,175,0.12); border-radius: 16px; text-decoration: none;
    transition: all 0.35s;
}
.nav-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(30,64,175,0.12); border-color: rgba(30,64,175,0.25); }
.nav-card.active,
.nav-card.is-active {
    border-color: var(--au-primary);
    background: linear-gradient(135deg, #eff6ff, #fff);
    box-shadow: 0 8px 24px rgba(30,64,175,0.12);
}
.nav-card-icon {
    width: 64px; height: 64px; flex-shrink: 0; border-radius: 16px;
    background: linear-gradient(135deg, var(--au-primary-dark), var(--au-primary));
    color: #fff; display: flex; align-items: center; justify-content: center; font-size: 28px;
}
.nav-card h4 { font-size: 18px; font-weight: 700; color: #0f172a; margin-bottom: 6px; }
.nav-card p { font-size: 13px; color: #64748b; margin: 0; }
.nav-card-arrow { margin-left: auto; color: var(--au-primary-light); font-size: 20px; transition: transform 0.3s; }
.nav-card:hover .nav-card-arrow { transform: translateX(4px); }

.culture-section { padding: 80px 0; background: linear-gradient(180deg, #f8fafc 0%, var(--au-surface) 100%); }
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture-card {
    background: #fff; border-radius: 18px; overflow: hidden;
    border: 1px solid #e2e8f0; transition: all 0.35s;
}
.culture-card:hover { transform: translateY(-8px); box-shadow: 0 20px 50px rgba(30,64,175,0.1); border-color: rgba(30,64,175,0.2); }
.culture-head {
    padding: 28px 24px; background: linear-gradient(135deg, var(--au-primary-dark), var(--au-primary)); color: #fff;
}
.culture-card:nth-child(2) .culture-head { background: #fff; color: #0f172a; border-bottom: 3px solid var(--au-primary); }
.culture-head h4 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.culture-head p { font-size: 14px; opacity: 0.92; line-height: 1.65; margin: 0; }
.culture-card:nth-child(2) .culture-head p { color: #64748b; opacity: 1; }
.culture-body { padding: 24px; }
.culture-list { list-style: none; margin: 0; padding: 0; }
.culture-list li {
    display: flex; align-items: flex-start; gap: 10px; padding: 10px 0;
    border-bottom: 1px solid #f1f5f9; font-size: 14px; color: #64748b;
}
.culture-list li:last-child { border-bottom: none; }
.culture-list i { color: var(--au-primary); font-size: 14px; margin-top: 3px; flex-shrink: 0; }

.honor-section { padding: 80px 0; background: #fff; }
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.honor-card {
    background: #fff; border-radius: 16px; padding: 32px 24px; text-align: center;
    border: 1px solid #e2e8f0; transition: all 0.35s;
}
.honor-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(30,64,175,0.1); border-color: rgba(30,64,175,0.2); }
.honor-icon {
    width: 72px; height: 72px; margin: 0 auto 18px; border-radius: 50%;
    background: var(--au-surface); color: var(--au-primary);
    display: flex; align-items: center; justify-content: center; font-size: 32px;
    border: 2px solid rgba(30,64,175,0.12);
}
.honor-card h4 { font-size: 16px; font-weight: 600; color: #0f172a; margin-bottom: 8px; }
.honor-card p { font-size: 13px; color: #64748b; line-height: 1.6; margin: 0; }
.honor-more { text-align: center; margin-top: 40px; }

.service-section { padding: 64px 0; background: linear-gradient(135deg, var(--au-primary-dark), var(--au-primary)); }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-item { text-align: center; color: #fff; padding: 20px 16px; }
.service-num { font-size: 36px; font-weight: 700; margin-bottom: 8px; line-height: 1; }
.service-label { font-size: 13px; color: rgba(255,255,255,0.78); }

.cta-section { background: linear-gradient(135deg, var(--au-surface), #fff); padding: 80px 0; text-align: center; border-top: 1px solid #e2e8f0; }
.cta-content h3 { font-size: 32px; font-weight: 700; color: #0f172a; margin-bottom: 16px; }
.cta-content p { font-size: 16px; color: #64748b; margin-bottom: 36px; max-width: 680px; margin-left: auto; margin-right: auto; line-height: 1.85; }
.cta-features { display: flex; justify-content: center; flex-wrap: wrap; gap: 20px 32px; margin-bottom: 36px; }
.cta-feature { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #475569; }
.cta-feature i { color: var(--au-primary); font-size: 16px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-btn {
    display: inline-flex; align-items: center; gap: 10px; padding: 16px 40px;
    background: linear-gradient(135deg, var(--au-primary), var(--au-primary-light));
    color: #fff; font-size: 16px; font-weight: 600; border-radius: 10px; text-decoration: none;
    transition: all 0.35s; box-shadow: 0 8px 28px rgba(30,64,175,0.35);
}
.cta-btn:hover { transform: translateY(-3px); }
.cta-btn-outline { background: #fff; color: var(--au-primary); border: 1px solid rgba(30,64,175,0.35); box-shadow: none; }
.cta-btn-outline:hover { background: var(--au-surface); }

.au-reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.au-reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1200px) {
    .intro-grid { grid-template-columns: 1fr; }
    .intro-visual { order: -1; }
    .intro-image { height: 320px; }
    .intro-float { left: 16px; bottom: -16px; }
    .culture-grid, .honor-grid { grid-template-columns: repeat(2, 1fr); }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .au-hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .au-stat:nth-child(2) { border-right: none; }
}
@media (max-width: 768px) {
    .au-hero-stats-grid { grid-template-columns: 1fr 1fr; padding: 20px; }
    .au-stat { border-right: none; border-bottom: 1px solid #e2e8f0; padding-bottom: 16px; }
    .au-stat:nth-last-child(-n+2) { border-bottom: none; }
    .intro-stats { grid-template-columns: 1fr; }
    .nav-grid, .culture-grid, .honor-grid, .service-grid { grid-template-columns: 1fr; }
    .cta-content h3 { font-size: 26px; }
}
@media (max-width: 480px) {
    .intro-actions, .cta-actions { flex-direction: column; align-items: stretch; }
    .intro-btn, .cta-btn { justify-content: center; }
    .nav-card { flex-wrap: wrap; }
    .nav-card-arrow { margin-left: 0; width: 100%; text-align: right; }
}