/* ===== 商务合作页专用样式 ===== */

/* Hero */
.coop-hero {
    position: relative;
    height: 85vh;
    min-height: 620px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #f5f5f7;
}
.coop-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}
.coop-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 1;
}
.coop-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,.25) 0%, rgba(255,255,255,.1) 45%, rgba(245,245,247,.75) 100%);
    z-index: 2;
}
.coop-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: #1d1d1f;
    max-width: 840px;
    padding: 0 24px;
}
.coop-hero-title {
    font-size: 80px;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -.03em;
    margin-bottom: 24px;
    color: #1d1d1f;
    text-shadow: 0 2px 20px rgba(255,255,255,.6);
}
.coop-hero-sub {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.6;
    color: #6e6e73;
}

/* 合作模式概览 */
.coop-overview {
    padding-bottom: 100px;
}
.coop-cards {
    max-width: 1200px;
    margin: 80px auto 0;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 100px;
}
.coop-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: #fff;
    border-radius: 28px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,.08);
}
.coop-card.reverse {
    direction: rtl;
}
.coop-card.reverse > * {
    direction: ltr;
}
.coop-card-img {
    height: 100%;
    min-height: 480px;
    overflow: hidden;
}
.coop-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}
.coop-card:hover .coop-card-img img {
    transform: scale(1.03);
}
.coop-card-body {
    padding: 50px 40px;
}
.coop-card-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 980px;
    margin-bottom: 18px;
}
.coop-card-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.15;
    color: #1d1d1f;
    margin-bottom: 16px;
}
.coop-card-desc {
    font-size: 17px;
    line-height: 1.7;
    color: #6e6e73;
    margin-bottom: 28px;
}
.coop-card-points {
    margin-bottom: 28px;
}
.coop-card-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}
.coop-card-features li {
    position: relative;
    padding-left: 22px;
    font-size: 15px;
    line-height: 1.7;
    color: #333;
    margin-bottom: 12px;
}
.coop-card-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #EFB806;
}
.coop-card-features li strong {
    color: #1d1d1f;
    font-weight: 700;
}
.coop-card-target {
    margin-bottom: 30px;
}
.target-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #86868b;
    margin-bottom: 10px;
    letter-spacing: 1px;
}
.target-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.target-tags span {
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    background: #f5f5f7;
    color: #1d1d1f;
    border-radius: 980px;
}
.coop-card-btn {
    display: inline-flex;
}

/* 合作优势 */
.coop-advantages {
    padding: 100px 24px;
}
.advantage-grid {
    max-width: 1100px;
    margin: 60px auto 0;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}
.advantage-item {
    background: rgba(255,255,255,.9);
    border: 1px solid rgba(255,255,255,.5);
    border-radius: 24px;
    padding: 36px 24px;
    text-align: center;
    color: var(--black);
    transition: transform .3s ease, background .3s ease;
}
.advantage-item:hover {
    transform: translateY(-6px);
    background: rgba(255,255,255,1);
}
.advantage-icon {
    font-size: 36px;
    margin-bottom: 16px;
}
.advantage-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--black);
}
.advantage-item p {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(0,0,0,.6);
}

/* 导航高亮 */
.nav-list a.active {
    color: #EFB806;
    font-weight: 600;
}

/* 模式子页面 */
.breadcrumb {
    font-size: 14px;
    color: #6e6e73;
    padding: 24px 0 0;
}
.breadcrumb a { color: #3D7FE9; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { margin: 0 8px; color: #c7c7cc; }

.mode-hero {
    position: relative;
    height: 60vh;
    min-height: 440px;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.mode-hero-bg { position: absolute; inset: 0; }
.mode-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.mode-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,.35), rgba(0,0,0,.62));
}
.mode-hero-content { position: relative; z-index: 2; width: 100%; }
.mode-hero-tag {
    display: inline-block;
    background: #EFB806; color: #1d1d1f;
    font-size: 14px; font-weight: 700;
    padding: 6px 16px; border-radius: 999px;
    margin-bottom: 18px;
}
.mode-hero-title {
    color: #fff; font-size: 56px; font-weight: 900; line-height: 1.1;
}
.mode-hero-sub {
    color: rgba(255,255,255,.88); font-size: 19px; margin-top: 16px; line-height: 1.7;
}

.mode-section { padding: 80px 24px; }
.mode-section.alt { background: #f5f5f7; }
.mode-detail-list { margin: 36px 0 0; }
.mode-detail-list .detail-item {
    display: flex; gap: 18px; padding: 22px 0;
    border-bottom: 1px solid rgba(0,0,0,.08);
}
.mode-detail-list .detail-item:last-child { border-bottom: none; }
.detail-item .di-label {
    flex: 0 0 170px;
    font-size: 17px; font-weight: 700; color: #1d1d1f;
}
.detail-item .di-text { flex: 1; font-size: 16px; line-height: 1.7; color: #4b4b4f; }
.detail-item .di-text strong { color: #3D7FE9; }

.process-steps {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px;
}
.process-step {
    background: #fff;
    border: 1px solid rgba(0,0,0,.08);
    border-radius: 20px;
    padding: 30px 26px;
    position: relative;
}
.process-step .step-num {
    width: 44px; height: 44px; border-radius: 50%;
    background: #3D7FE9; color: #fff;
    font-size: 18px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 18px;
}
.process-step h4 { font-size: 19px; margin-bottom: 10px; color: #1d1d1f; }
.process-step p { font-size: 15px; color: #6e6e73; line-height: 1.65; }

/* 响应式 */
@media (max-width: 1068px) {
    .coop-hero-title { font-size: 64px; }
    .coop-hero-sub { font-size: 20px; }
    .coop-card { grid-template-columns: 1fr; gap: 0; }
    .coop-card-img { min-height: 360px; }
    .coop-card.reverse { direction: ltr; }
    .advantage-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .coop-hero { height: 70vh; min-height: 500px; }
    .coop-hero-title { font-size: 48px; }
    .coop-hero-sub { font-size: 18px; }
    .coop-cards { gap: 60px; margin-top: 50px; }
    .coop-card-body { padding: 36px 28px; }
    .coop-card-title { font-size: 32px; }
    .coop-card-desc { font-size: 16px; }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .mode-hero-title { font-size: 40px; }
    .process-steps { grid-template-columns: 1fr; }
    .detail-item { flex-direction: column; gap: 6px; }
    .detail-item .di-label { flex: none; }
}

@media (max-width: 480px) {
    .coop-hero-title { font-size: 38px; }
    .coop-hero-sub { font-size: 16px; }
    .coop-card-img { min-height: 260px; }
    .coop-card-body { padding: 28px 22px; }
    .coop-card-title { font-size: 28px; }
    .coop-card-features li { font-size: 14px; }
    .advantage-grid { grid-template-columns: 1fr; }
    .advantage-item { padding: 28px 20px; }
    .mode-hero-title { font-size: 32px; }
    .mode-hero { min-height: 380px; }
    .process-step { padding: 24px 20px; }
}