/* ============================================================
   Accordion 手风琴 —— 单列竖排，自适应宽度（与 services.html FAQ 一致）
   ============================================================ */

.qing-accordion {
    --blue: #1b3df5;
    --navy: #0b1a3a;
    --muted: #6b7891;
    --border: #e4e8f0;
    font-family: "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    padding: 64px 0;
}

.qing-accordion *,
.qing-accordion *::before,
.qing-accordion *::after { box-sizing: border-box; }

.qing-accordion .container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 50px;
}

/* ---------- 单列列表（自适应宽度） ---------- */
.qing-accordion .acc-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.qing-accordion .acc-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}

.qing-accordion .acc-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 20px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--navy);
    font-family: inherit;
}

.qing-accordion .acc-chev {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--blue);
    transition: transform .25s ease;
}

.qing-accordion .acc-item.open .acc-chev {
    transform: rotate(180deg);
}

.qing-accordion .acc-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
}

.qing-accordion .acc-a p {
    padding: 0 20px 18px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
    margin: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 560px) {
    .qing-accordion { padding: 44px 0; }
    .qing-accordion .container { padding: 0 15px; }
}