/* ============================================================
   悬浮客服（橙色竖条胶囊 + 展开面板 + 需求弹窗）
   配色沿用品牌橙 #F79A01；只作用于 .kf-* 前缀，不与站内其它样式冲突。
   ============================================================ */
/* 变量同时挂在面板与弹窗容器上：两者是并列节点（弹窗不能放进 .kf-wrap 里，
   否则会被面板的 fixed 层叠上下文裁剪），只写在 .kf-wrap 上弹窗取不到值。 */
.kf-wrap,
.kf-mask {
    --kf-accent: #F79A01;
    --kf-accent-deep: #C97A01;
    --kf-accent-soft: #FFF4E3;
    --kf-ink: #1A2B36;
    --kf-ink-2: #5F6B73;
    --kf-line: #E3E8EB;
}

.kf-wrap {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 900;
    font-size: 14px;
}

/* ---- 竖条胶囊（常驻） ---- */
.kf-tab {
    width: 42px;
    height: 126px;
    border-radius: 21px 0 0 21px;
    background: var(--kf-accent);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 7px;
    cursor: pointer;
    box-shadow: -2px 2px 10px rgba(0, 0, 0, .14);
    transition: background .2s;
    -webkit-tap-highlight-color: transparent;
}
.kf-tab:hover { background: var(--kf-accent-deep); }
.kf-tab span {
    writing-mode: vertical-rl;
    letter-spacing: 3px;
    font-size: 13px;
}

/* ---- 展开面板 ---- */
.kf-panel {
    position: absolute;
    right: 54px;
    top: 50%;
    transform: translateY(-50%) translateX(12px);
    width: 276px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    overscroll-behavior: contain;
    background: #fff;
    border: 1px solid var(--kf-line);
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(15, 45, 65, .16);
    opacity: 0;
    visibility: hidden;
    transition: all .22s ease;
}
.kf-wrap.open .kf-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* 悬停设备：展开后在胶囊与面板之间补一条透明「桥」，盖住那 12px 空隙。
   不加的话鼠标从胶囊移到面板的途中会短暂离开 .kf-wrap，触发收回、面板闪烁。
   仅在展开态存在（收起时不扩大触发区）；触屏设备没有 hover，不生效。 */
@media (hover: hover) and (pointer: fine) {
    .kf-wrap.open::before {
        content: '';
        position: absolute;
        top: 50%;
        right: 42px;
        width: 14px;
        height: 126px;
        transform: translateY(-50%);
    }
}

.kf-head {
    padding: 14px 16px;
    border-bottom: 1px solid var(--kf-line);
    display: flex;
    align-items: center;
    gap: 10px;
}
.kf-avatar {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    border-radius: 50%;
    background: var(--kf-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
}
.kf-head b { display: block; font-size: 14px; }
.kf-head i {
    display: block;
    font-size: 11.5px;
    color: var(--kf-ink-2);
    font-style: normal;
    margin-top: 3px;
}
.kf-head .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #3FAE5A;
    display: inline-block;
    margin-right: 4px;
    vertical-align: 1px;
}

.kf-body { padding: 10px 12px 12px; }
.kf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 11px;
    border-radius: 8px;
    cursor: pointer;
    transition: background .18s;
    color: var(--kf-ink);
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}
.kf-item:hover { background: #F6F8F9; }
.kf-item.on { background: var(--kf-accent-soft); }
.kf-ico {
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    border-radius: 8px;
    background: var(--kf-accent-soft);
    color: var(--kf-accent-deep);
    display: flex;
    align-items: center;
    justify-content: center;
}
.kf-item.on .kf-ico { background: #fff; }
.kf-txt { min-width: 0; flex: 1; }
.kf-txt b { display: block; font-size: 13px; font-weight: 600; }
.kf-txt small {
    display: block;
    font-size: 11.5px;
    color: var(--kf-ink-2);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 微信二维码：原位折叠展开 */
.kf-fold { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.kf-fold.open { max-height: 300px; }
.kf-qr {
    margin: 2px 0 4px;
    background: var(--kf-accent-soft);
    border-radius: 10px;
    padding: 14px;
    text-align: center;
}
.kf-qr img {
    width: 146px;
    height: 146px;
    margin: 0 auto;
    border: 4px solid #fff;
    border-radius: 8px;
}
.kf-qr p {
    font-size: 12px;
    color: var(--kf-accent-deep);
    margin-top: 9px;
    line-height: 1.7;
}
.kf-qr em {
    font-style: normal;
    font-size: 11.5px;
    color: var(--kf-ink-2);
    display: block;
    margin-top: 2px;
}
.kf-wx-id {
    display: inline-block;
    margin-top: 8px;
    font-size: 12px;
    color: var(--kf-accent-deep);
    border: 1px dashed var(--kf-accent);
    border-radius: 6px;
    padding: 4px 10px;
    cursor: pointer;
    background: #fff;
}

.kf-submit {
    display: block;
    width: 100%;
    margin-top: 9px;
    background: var(--kf-accent);
    color: #fff;
    text-align: center;
    padding: 11px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-family: inherit;
}
.kf-submit:hover { background: var(--kf-accent-deep); }
.kf-foot { padding: 0 12px 12px; }
.kf-foot small {
    display: block;
    font-size: 11px;
    color: #93A0A8;
    text-align: center;
    line-height: 1.7;
}

/* ---- 需求弹窗 ---- */
.kf-mask {
    position: fixed;
    inset: 0;
    background: rgba(15, 35, 50, .42);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.kf-mask.show { display: flex; }
.kf-modal {
    width: 100%;
    max-width: 440px;
    max-height: calc(100vh - 40px);
    overflow: auto;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 18px 50px rgba(10, 30, 45, .3);
}
.kf-modal-head {
    background: var(--kf-accent);
    color: #fff;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.kf-modal-head b { font-size: 16px; }
.kf-modal-head small { display: block; font-size: 11.5px; opacity: .9; margin-top: 3px; }
.kf-modal-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    padding: 4px 6px;
    font-family: inherit;
}
.kf-modal-body { padding: 20px; }
.kf-fld { margin-bottom: 14px; }
.kf-fld label { display: block; font-size: 13px; margin-bottom: 7px; color: var(--kf-ink); }
.kf-fld label em { font-style: normal; color: #E24B4A; margin-left: 2px; }
.kf-fld input,
.kf-fld select,
.kf-fld textarea {
    width: 100%;
    border: 1px solid var(--kf-line);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--kf-ink);
    background: #fff;
    outline: none;
}
.kf-fld input:focus,
.kf-fld select:focus,
.kf-fld textarea:focus {
    border-color: var(--kf-accent);
    box-shadow: 0 0 0 3px rgba(247, 154, 1, .14);
}
.kf-fld textarea { resize: vertical; min-height: 88px; line-height: 1.7; }
.kf-fld .tip { font-size: 11.5px; color: #93A0A8; margin-top: 6px; }
.kf-fld-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.kf-modal-submit {
    width: 100%;
    background: var(--kf-accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 13px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    margin-top: 4px;
}
.kf-modal-submit:hover { background: var(--kf-accent-deep); }
.kf-modal-submit:disabled { opacity: .6; cursor: default; }
.kf-modal-foot {
    text-align: center;
    font-size: 11.5px;
    color: #93A0A8;
    margin-top: 12px;
    line-height: 1.7;
}
.kf-done { padding: 34px 26px; text-align: center; }
.kf-done .ok {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--kf-accent-soft);
    color: var(--kf-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.kf-done h3 { font-size: 18px; margin-bottom: 10px; }
.kf-done p { font-size: 13.5px; color: var(--kf-ink-2); line-height: 1.9; }
.kf-done b { color: var(--kf-accent-deep); }

@media (max-width: 760px) {
    .kf-tab { width: 36px; height: 110px; border-radius: 18px 0 0 18px; }
    .kf-tab span { font-size: 12px; letter-spacing: 2px; }
    .kf-panel { width: calc(100vw - 60px); max-width: 300px; right: 46px; }
    .kf-fld-2 { grid-template-columns: 1fr; }
}