* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: #4e5e78;
    background: #ffffff;
}
.topbar {
    background: #68a9e8;
    color: #fff;
    padding: 18px 36px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 92px;
}
.platform-title {
    font-size: 24px;
    font-weight: 700;
}
.hotline {
    font-size: 18px;
    font-weight: 700;
}
.register-shell {
    max-width: 1060px;
    margin: 0 auto;
    padding: 18px 24px 48px;
}
.page-title {
    margin: 8px 0 0;
    text-align: center;
    color: #4b5871;
    font-size: 28px;
    font-weight: 700;
}
.page-title a {
    margin-left: 10px;
    color: #68a9e8;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    vertical-align: middle;
}
.page-tip {
    margin: 10px 0 34px;
    text-align: center;
    color: #e9836f;
    font-size: 14px;
    font-weight: 600;
}
.form-panel {
    max-width: 920px;
    margin: 0 auto;
}
.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    margin: 28px 0 26px;
    font-size: 18px;
    font-weight: 700;
    color: #7cb7ee;
}
.section-title::before {
    content: "";
    flex: 1;
    max-width: 390px;
    height: 1px;
    background: #edf1f6;
}
.section-title::after {
    content: "";
    flex: 1;
    max-width: 390px;
    height: 1px;
    background: #edf1f6;
}
.section-hint {
    text-align: center;
    color: #8a96a3;
    font-size: 14px;
    margin-top: -18px;
    margin-bottom: 24px;
}
.enterprise-info-box {
    background: #fcfdfe;
    border: 1px solid #f0f4f8;
    padding: 20px 0;
    border-radius: 8px;
    margin-bottom: 30px;
}
.info-group-title {
    padding: 0 20px 10px;
    color: #7cb7ee;
    font-weight: 700;
    font-size: 16px;
}
.info-group-title.with-border {
    padding: 20px 20px 10px;
    border-top: 1px dashed #edf1f6;
    margin-top: 10px;
}
.flash-message {
    margin: 0 auto 22px;
    max-width: 820px;
    padding: 10px 14px;
    border: 1px solid #ffd6d0;
    background: #fff7f5;
    color: #d36e60;
    border-radius: 6px;
    font-size: 14px;
}
.form-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}
.form-label {
    width: 160px;
    flex: 0 0 160px;
    text-align: right;
    color: #7a8699;
    font-size: 16px;
    font-weight: 700;
}
.form-field {
    flex: 1;
    display: flex;
    gap: 12px;
}
.must {
    color: #e0a287;
    margin-right: 6px;
}
.form-control {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid #e8edf3;
    border-radius: 4px;
    background: #fff;
    font-size: 14px;
    color: #55657f;
}
.form-control:focus {
    outline: none;
    border-color: #9fc8f3;
    box-shadow: 0 0 0 2px rgba(104, 169, 232, 0.12);
}
.form-control.half {
    width: calc(50% - 6px);
}
.actions {
    padding-top: 18px;
    text-align: center;
}
.btn {
    display: inline-block;
    min-width: 156px;
    height: 42px;
    line-height: 42px;
    margin: 0 8px;
    border-radius: 4px;
    border: none;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}
.btn-primary {
    color: #fff;
    background: #68a9e8;
}
.btn-secondary {
    color: #68a9e8;
    background: #fff;
    border: 1px solid #cfe2f6;
}
@media (max-width: 900px) {
    .topbar {
        padding: 16px 18px;
        flex-direction: column;
        align-items: flex-start;
        min-height: auto;
    }
    .platform-title {
        font-size: 22px;
    }
    .hotline {
        font-size: 16px;
    }
    .register-shell {
        padding: 18px 14px 36px;
    }
    .form-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .form-label {
        width: auto;
        flex: none;
        text-align: left;
        font-size: 15px;
    }
    .form-field {
        width: 100%;
    }
}
@media (max-width: 640px) {
    .page-title {
        font-size: 24px;
    }
    .section-title {
        gap: 10px;
        font-size: 17px;
    }
    .section-title::before,
    .section-title::after {
        max-width: 72px;
    }
    .form-field {
        flex-direction: column;
    }
    .form-control.half {
        width: 100%;
    }
    .btn {
        width: calc(50% - 10px);
        min-width: 0;
        margin: 6px 4px 0;
    }
}