/* 
   Soxcustom Global Style Sheet 
   Version: 1.1 
   Description: Optimized B2B Design Framework for high-conversion landing pages.
*/

:root {
    --sox-blue: #001A6E;
    --sox-red: #D9534F;
    --sox-light: #F8FAFC;
    --sox-text: #1e293b;
}

/* 全局基础设置 */
body { 
    font-family: 'Jost', sans-serif; 
    color: var(--sox-text);
    background-color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    word-wrap: break-word;
}

/* 颜色辅助类 */
.text-sox-blue { color: var(--sox-blue); }
.bg-sox-blue { background-color: var(--sox-blue); }
.bg-sox-red { background-color: var(--sox-red); }
.border-sox-blue { border-color: var(--sox-blue); }

/* WhatsApp 转化按钮 */
.btn-whatsapp {
    background-color: #25D366;
    color: white;
    padding: 16px 40px;
    border-radius: 12px;
    font-weight: 800;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.2);
    text-transform: uppercase;
    text-decoration: none;
}

.btn-whatsapp:hover {
    background-color: #128C7E;
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(37, 211, 102, 0.3);
}

/* 标题系统 (SEO/GEO 优化) */
.h1-title { font-size: 4.5rem; font-weight: 900; line-height: 1.1; color: var(--sox-blue); word-break: break-word; }
.h2-title { font-size: 2.75rem; font-weight: 800; line-height: 1.2; color: var(--sox-blue); margin-bottom: 0.25rem; word-break: break-word; }
.h3-title { font-size: 1.5rem; font-weight: 700; color: var(--sox-blue); margin-bottom: 0.25rem; }

/* 装饰线条 */
.accent-line { width: 80px; height: 5px; background-color: var(--sox-red); margin-bottom: 0.5rem; }
.centered .accent-line { margin-left: auto; margin-right: auto; }

/* 现代化功能卡片 */
.feature-box { 
    background: #fff; 
    padding: 1.5rem; 
    border-radius: 20px; 
    border: 1px solid #eef2f6; 
    transition: all 0.5s ease; 
    position: relative; 
    overflow: hidden; 
}
@media (min-width: 1024px) {
    .feature-box { padding: 3rem; border-radius: 30px; }
}
.feature-box:hover { 
    transform: translateY(-10px); 
    box-shadow: 0 30px 60px rgba(0, 26, 110, 0.08); 
    border-color: var(--sox-blue); 
}
.feature-box::before { 
    content: ""; 
    position: absolute; 
    top: 0; left: 0; 
    width: 4px; height: 100%; 
    background: var(--sox-red); 
    opacity: 0; 
    transition: 0.3s; 
}
.feature-box:hover::before { opacity: 1; }

/* 微纹理背景 */
.bg-texture { 
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23001a6e' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4v-4H4v4H0v2h4v4h2v-4h4v-2H6zm30 0v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); 
}

/* 响应式调整 - 桌面/平板/手机 */
@media (max-width: 1024px) {
    .h1-title { font-size: 3.5rem; }
    .h2-title { font-size: 2.25rem; }
}
@media (max-width: 640px) {
    .h1-title { font-size: 2.5rem; }
    .h2-title { font-size: 1.85rem; }
    .h3-title { font-size: 1.25rem; }
}

/* FAQ 手风琴交互样式 */
.faq-item { 
    border: 1px solid #e2e8f0; 
    border-radius: 12px; 
    margin-bottom: 0.5rem; 
    background: #ffffff; 
    transition: all 0.3s ease; 
}
.faq-question { 
    padding: 1rem 1.5rem; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    cursor: pointer; 
    font-size: 18px; 
    font-weight: 600; 
    color: #1e293b; 
}
.faq-answer { 
    padding: 0 1.5rem 1.5rem 1.5rem; 
    font-size: 16px; 
    font-weight: 500; 
    color: #334155; 
    display: none; 
}
@media (min-width: 1024px) {
    .faq-question { padding: 1.5rem 2rem; font-size: 25px; }
    .faq-answer { padding: 0 2rem 1.5rem 2rem; font-size: 20px; }
}
.faq-item.active .faq-answer { display: block; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.3s ease; font-size: 30px; color: #1e293b; }