:root {
      /* 修改为深色商务蓝，与首页统一 */
      --brand-blue-dark: #0F2B5B;
      --brand-blue: #163b7c;
      --brand-blue-hover: #1a4694;
      --brand-blue-light: #e8edf7;
    }
    .app-content {
        background-color: #f5f7fa;
    }
    body.app-content {
        color: #666;
        background-color: #f5f7fa;
    }
    .app-content a {
        color: var(--brand-blue-dark);
        text-decoration: none;
        transition: all 0.3s ease;
    }
    .app-content a:hover {
        color: var(--brand-blue-hover) !important;
    }
    .app-content .title-h1 { font-size: 28px; color: #333; font-weight: bold; margin-bottom: 15px; text-align: center; }
    .app-content .title-h2 { font-size: 24px; color: #333; font-weight: bold; margin-bottom: 20px; }
    .app-content .title-h3 { font-size: 18px; color: #333; font-weight: bold; margin-bottom: 10px; }
    .app-content .subtitle { font-size: 15px; color: #666; max-width: 800px; margin: 0 auto 30px; text-align: center; }
    .app-content .text-sm { font-size: 14px; color: #666; }
    .app-content .text-white { font-size: 15px; color: #e6edf8; }
    .app-content .text-faq { font-size: 16px; color: #333; font-weight: 600; }
    .app-content .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.app-content .hero-section {
    background: linear-gradient(135deg, var(--brand-blue-dark) 0%, #1948a8 100%);
    color: #fff;
    padding: 70px 0;
    overflow: hidden;
}
.app-content .hero-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    min-height: 520px;
}
.app-content .hero-left {
    display: flex;
    justify-content: center;
    flex: 0 0 42%;
}
.app-content .hero-img {
    max-width: 100%;
    width: 100%;
    border-radius: 0;
    box-shadow: none;
}
.app-content .hero-right {
    flex: 0 0 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.app-content .hero-right h1 {
    font-size: 40px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}
.app-content .hero-right .text-white {
    font-size: 18px;
    margin-bottom: 36px;
    line-height:1.7;
    max-width:580px;
    opacity:0.92;
}
.app-content .hero-qrcode-single {
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:22px;
}
.app-content .hero-qrcode-single img {
    width:150px;
    height:150px;
    border:4px solid #ffffff;
    border-radius:14px;
}
.app-content .hero-btn-group {
    display:flex;
    gap:24px;
    flex-wrap:wrap;
}
.app-content .hero-download-btn {
    padding:14px 36px;
    background:#ffffff;
    color:var(--brand-blue-dark)!important;
    font-size:17px;
    font-weight:600;
    border-radius:50px;
    display:inline-block;
    transition:all 0.3s ease;
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}
.app-content .hero-download-btn:hover {
    background:#f0f4fc;
    color:#0b2248!important;
    transform:translateY(-3px);
    box-shadow:0 8px 20px rgba(0,0,0,0.16);
}

.app-content .features-section { padding: 80px 0; }
.app-content .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1000px; margin: 0 auto; }
.app-content .feature-card {
    background-color: var(--brand-blue-light);
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #d8e1f2;
    transition: all 0.3s ease;
}
.app-content .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(15, 43, 91, 0.15);
    border-color: var(--brand-blue-dark);
}
.app-content .feature-icon {
    font-family: "FontAwesome" !important;
    font-size: 40px;
    background: linear-gradient(135deg, var(--brand-blue-dark) 0%, var(--brand-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
    display: inline-block;
}
.app-content .function-section { padding: 80px 0; background-color: #fff; }
.app-content .function-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; align-items: center; margin-bottom: 40px; }
.app-content .function-img { width: 100%; border-radius: 12px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1); }
.app-content .function-text li { font-size: 15px; padding-left: 28px; margin-bottom: 15px; position: relative; list-style: none; color: #333; }
.app-content .function-text li::before { content: "✓"; position: absolute; left: 0; color: var(--brand-blue-dark); font-weight: 700; }
.app-content .download-section {
    padding: 80px 0;
    background: linear-gradient(rgba(15, 43, 91,0.85),rgba(15, 43, 91,0.85)), url(/static/images/bgdl.png) center center no-repeat;
    background-size: cover;
    color: #fff;
    text-align: center;
}
.app-content .download-section .title-h1 { color: #fff; }
.app-content .download-section .subtitle { color: #e6edf8; }
.app-content .qrcode-single-wrap{
    margin-bottom:32px;
}
.app-content .qrcode-single-wrap img{
    width:180px;
    height:180px;
    border:4px solid #fff;
    border-radius:12px;
    margin-bottom:16px;
}
.app-content .download-btn {
    padding: 16px 50px;
    background:#ffffff !important;
    color:var(--brand-blue-dark) !important;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    display: inline-block;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 12px rgba(15, 43, 91, 0.25);
}
.app-content .download-btn:hover {
    background:var(--brand-blue-light) !important;
    box-shadow: 0 6px 20px rgba(15, 43, 91, 0.35);
    transform: translateY(-2px);
    color:var(--brand-blue-dark) !important;
}
.app-content .download-tips { font-size: 14px; color: #e6edf8; opacity: 0.85; margin-top: 20px; }
.app-content .faq-section { padding: 80px 0; }
.app-content .faq-item { background-color: #fff; margin-bottom: 15px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); }
.app-content .faq-question { padding: 20px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.app-content .faq-question::after { content: "+"; font-size: 20px; color: var(--brand-blue-dark); }
.app-content .faq-item.active .faq-question::after { content: "-"; }
.app-content .faq-answer { font-size: 15px; color: #666; padding: 0 20px 20px; display: none; }

/* 统一只保留一套响应式 */
@media (max-width: 1200px) {
    .app-content .hero-wrap {
        gap:40px;
    }
    .app-content .hero-right h1 {
        font-size:34px;
    }
}
@media (max-width: 768px) {
    .app-content .hero-section {
        padding: 40px 0 !important;
    }
    .app-content .hero-wrap {
        flex-direction: column;
        gap:32px;
        min-height:auto;
        padding: 0 20px;
    }
    .app-content .hero-left {
        flex: unset;
        width:100%;
    }
    .app-content .hero-img {
        max-width: 300px !important;
    }
    .app-content .hero-right {
        flex:unset;
        width: 100%;
        text-align:center;
    }
    .app-content .hero-right h1 {
        font-size: 28px;
        text-align: center;
        margin-bottom: 12px;
    }
    .app-content .hero-right .text-white {
        font-size: 16px;
        text-align: center;
        margin:0 auto 28px;
        max-width:100%;
    }
    .app-content .hero-qrcode-single {
        align-items:center;
    }
    .app-content .hero-btn-group {
        justify-content:center;
    }
    .app-content .hero-download-btn{
        padding:12px 28px;
    }
    .app-content .title-h1 { font-size: 22px; }
    .app-content .title-h2 { font-size: 20px; }
    .app-content .features-grid { grid-template-columns: 1fr; gap: 15px; }
    .app-content .download-btn { font-size: 17px; min-width: 240px; }
}