/* ==========================================================================
   营销站独立样式表 (marketing-style.css)
   ========================================================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #1d1d1f;
    background-color: #f5f5f7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航 */
.marketing-header {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #e5e5e7;
    position: sticky;
    top: 0;
    z-index: 100;
}

.marketing-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.brand-logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: #0071e3;
    letter-spacing: -0.5px;
}

.marketing-nav a,.brand-logo a {
    text-decoration: none;
    color: #515154;
    margin-left: 24px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.marketing-nav a:hover,.brand-logo a:hover {
    color: #0071e3;
}

.marketing-nav .btn-nav {
    background-color: #0071e3;
    color: #ffffff;
    padding: 8px 18px;
    border-radius: 980px;
}

.marketing-nav .btn-nav:hover {
    background-color: #0077ed;
}

/* 主体及落地页排版样式 */
.marketing-main {
    padding-top: 40px;
    padding-bottom: 80px;
}

.marketing-content-block {
    background: #ffffff;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.03);
}

/* AIGC 引擎 A 输出的样式映射 */
.promo-header {
    text-align: center;
    margin-bottom: 40px;
    border-bottom: 1px solid #f5f5f7;
    padding-bottom: 30px;
}

.promo-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #1d1d1f;
    letter-spacing: -0.8px;
    margin-bottom: 12px;
}

.promo-header .subtitle {
    font-size: 1.15rem;
    color: #86868b;
}

.core-section {
    margin-bottom: 50px;
}

.core-section h2 {
    font-size: 1.6rem;
    color: #1d1d1f;
    margin-bottom: 20px;
}

.core-section p {
    font-size: 1.1rem;
    color: #515154;
    margin-bottom: 20px;
}

.core-section ul {
    list-style: none;
}

.core-section ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 16px;
    font-size: 1.05rem;
    color: #333336;
}

.core-section ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #30d158;
    font-weight: bold;
}

/* CTA 转化区样式 */
.cta-section {
    background: linear-gradient(135deg, #0071e3, #0050a1);
    color: #ffffff;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    margin: 50px 0;
}

.cta-section h2 {
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.cta-section p {
    font-size: 1.05rem;
    margin-bottom: 24px;
    opacity: 0.9;
}

.cta-section .btn-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cta-section .btn {
    text-decoration: none;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    transition: transform 0.2s;
}

.cta-section .btn:hover {
    transform: translateY(-2px);
}

.cta-section .btn-primary {
    background-color: #ffffff;
    color: #0071e3;
}

.cta-section .btn-secondary {
    background-color: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* FAQ 模块样式 */
.faq-section {
    border-top: 1px solid #e5e5e7;
    padding-top: 40px;
}

.faq-section h2 {
    font-size: 1.6rem;
    color: #1d1d1f;
    margin-bottom: 30px;
}

.faq-item {
    margin-bottom: 24px;
    border-bottom: 1px solid #f5f5f7;
    padding-bottom: 20px;
}

.faq-question {
    font-size: 1.15rem;
    color: #1d1d1f;
    font-weight: 600;
    margin-bottom: 8px;
}

.faq-answer {
    font-size: 1rem;
    color: #515154;
    line-height: 1.6;
}

/* 页脚 */
.marketing-footer {
    background-color: #fff;
    color: #999;
    padding: 30px 0;
    font-size: 0.85rem;
    text-align: center;
}
.marketing-footer p a {
    color: #999;
    text-decoration:none;
    text-align: center;
}