/* ============================================================
   合作加盟页样式 - join.css
   包含：banner 数据条、核心优势、招商政策、加盟流程、FAQ + 响应式
============================================================ */

/* 页面特有样式 */
.page-cover { text-align: center; }
.page-cover .sub { max-width: 600px; margin-left: auto; margin-right: auto; }
.breadcrumb { justify-content: center; }
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 40px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-family: var(--font-display); font-size: clamp(32px, 4vw, 48px); font-weight: 800; line-height: 1; }
.hero-stat .lbl { font-size: 15px; opacity: .8; margin-top: 8px; }
.features { padding: 96px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: #fff; border-radius: var(--radius); padding: 36px 26px; text-align: center; box-shadow: var(--shadow-sm); border: 1px solid var(--line); position: relative; overflow: hidden; transition: transform .3s, box-shadow .3s, border-color .3s; }
.feature-card::before { content: ""; position: absolute; left: 0; top: 0; right: 0; height: 4px; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--green-200); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon { width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 20px; background: var(--grad-soft); color: var(--green-600); display: flex; align-items: center; justify-content: center; transition: background .3s, color .3s, transform .3s; }
.feature-card:hover .feature-icon { background: var(--grad); color: #fff; transform: scale(1.08); }
.feature-icon svg { width: 32px; height: 32px; }
.feature-card h3 { font-size: 22px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.feature-card .en { font-family: var(--font-display); font-size: 12px; letter-spacing: 1.5px; color: var(--muted-2); text-transform: uppercase; margin-bottom: 14px; }
.feature-card p { color: var(--muted); font-size: 16px; }
.policy { padding: 96px 0; background: var(--bg-soft); }
.policy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.policy-card { background: #fff; border-radius: var(--radius); padding: 32px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); display: flex; gap: 20px; align-items: flex-start; transition: transform .3s, box-shadow .3s; }
.policy-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.policy-icon { width: 56px; height: 56px; border-radius: 16px; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; flex: none; }
.policy-icon svg { width: 26px; height: 26px; }
.policy-body h3 { font-size: 20px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
.policy-body p { color: var(--muted); font-size: 15px; line-height: 1.75; }
.process { padding: 96px 0; }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-steps::before { content: ""; position: absolute; top: 44px; left: 12.5%; right: 12.5%; height: 2px; background: var(--line); z-index: 0; }
.step { text-align: center; position: relative; z-index: 1; }
.step-num { width: 88px; height: 88px; margin: 0 auto 20px; border-radius: 50%; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 28px; font-weight: 800; box-shadow: 0 8px 24px rgba(9,146,80,.25); transition: transform .3s, box-shadow .3s; }
.step:hover .step-num { transform: scale(1.1); box-shadow: 0 12px 32px rgba(9,146,80,.35); }
.step h3 { font-size: 20px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 15px; }
.faq { padding: 96px 0; background: var(--bg-soft); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: var(--radius); margin-bottom: 16px; border: 1px solid var(--line); overflow: hidden; transition: box-shadow .3s; }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-q { padding: 22px 28px; font-size: 18px; font-weight: 700; color: var(--ink); cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.faq-q svg { width: 20px; height: 20px; color: var(--green-600); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a { padding: 0 28px 22px; color: var(--muted); font-size: 16px; line-height: 1.8; display: none; }
.faq-item.open .faq-a { display: block; }
@media (max-width: 960px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .policy-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .process-steps::before { display: none; }
}
@media (max-width: 768px) {
    .features, .policy, .process, .faq { padding: 72px 0; }
}
@media (max-width: 560px) {
    .hero-stats { gap: 24px; }
    .features, .policy, .process, .faq { padding: 56px 0; }
    .feature-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .step-num { width: 68px; height: 68px; font-size: 22px; }
}

.hero-stat .num .unit { font-size: .55em; }