.online-page {
    background: #f4f7fb;
    padding: 40px 0 70px;
    min-height: 760px;
}

.online-wrap {
    width: 1200px;
    margin: 30px auto 0 auto;
}

.online-header {
    margin-bottom: 24px;
}

.online-title {
    color: #1f2d3d;
    font-size: 30px;
    line-height: 1.6;
    margin-bottom: 8px;
    font-weight: 700;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    overflow: visible;
}

.online-subtitle {
    color: #6f7d95;
    font-size: 14px;
    line-height: 1.8;
}

.chat-layout {
    display: flex;
    gap: 24px;
}

.chat-panel,
.message-panel {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(29, 45, 75, 0.08);
}

.chat-panel {
    width: 860px;
}

.chat-head {
    border-bottom: 1px solid #edf1f8;
    padding: 18px 24px;
    color: #1f2d3d;
    font-size: 16px;
    font-weight: 600;
}

.chat-body {
    padding: 24px;
    height: 500px;
    overflow-y: auto;
}

.msg-item {
    margin-bottom: 18px;
    display: flex;
}

.msg-item.user {
    justify-content: flex-end;
}

.msg-bubble {
    max-width: 600px;
    line-height: 1.8;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
}

.msg-item.user .msg-bubble {
    background: #007bc7;
    color: #fff;
}

.msg-item.bot .msg-bubble {
    background: #f1f5fb;
    color: #33445c;
}

.chat-input {
    border-top: 1px solid #edf1f8;
    padding: 18px 24px 24px;
}

.chat-input textarea {
    width: 100%;
    min-height: 86px;
    border: 1px solid #d6e0ee;
    border-radius: 6px;
    padding: 10px 12px;
    resize: none;
    outline: none;
    font-size: 14px;
}

.chat-actions {
    margin-top: 12px;
    text-align: right;
}

.btn-main,
.btn-light {
    display: inline-block;
    padding: 9px 20px;
    border-radius: 4px;
    font-size: 14px;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn-main {
    background: #007bc7;
    border-color: #007bc7;
    color: #fff;
}

.btn-main:hover {
    background: #0068ab;
}

.btn-light {
    background: #fff;
    border-color: #d6e0ee;
    color: #47607f;
}

.chat-side {
    width: 316px;
}

.chat-side .message-panel {
    padding: 20px;
    margin-bottom: 20px;
}

.panel-title {
    color: #1f2d3d;
    font-size: 16px;
    margin-bottom: 10px;
    font-weight: 600;
}

.panel-text {
    font-size: 13px;
    color: #667891;
    line-height: 1.9;
}

.message-panel {
    width: 250px;
    margin: 0 auto;
    padding: 28px 34px 34px;
}

.message-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 24px;
}

.form-item {
    display: block;
}

.form-item label {
    display: block;
    color: #415670;
    font-size: 14px;
    margin-bottom: 8px;
}

.form-item input,
.form-item select,
.form-item textarea {
    width: 100%;
    border: 1px solid #d6e0ee;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
}

.form-item.wide {
    grid-column: span 2;
}

.message-actions {
    margin-top: 22px;
    text-align: right;
}