* { box-sizing: border-box; }

body {
    margin: 0;
    padding-top: 86px;
    background: #eef2f7;
    color: #1f2937;
    font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.fl-page {
    max-width: 1140px;
    margin: 0 auto;
    padding: 20px 14px 36px;
}

.fl-hero {
    margin-bottom: 16px;
}

.fl-hero h1 {
    margin: 0;
    font-size: 34px;
    font-weight: 800;
    letter-spacing: .3px;
    color: #0f172a;
}

.fl-hero p {
    margin: 8px 0 0;
    color: #64748b;
    font-size: 15px;
}

.fl-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 18px;
}

.fl-main {
    background: #fff;
    border-radius: 14px;
    border: 1px solid #d9e2ee;
    overflow: hidden;
}

.fl-main-head {
    padding: 14px 18px;
    border-bottom: 1px solid #e7edf5;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    background: #f8fbff;
}

.fl-main-head h2 {
    margin: 0;
    font-size: 20px;
    color: #1e293b;
}

.fl-main-head span {
    font-size: 13px;
    color: #6b7280;
}

.fl-alert {
    margin: 14px 18px 0;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 13px;
    border: 1px solid;
}

.fl-info {
    background: #eff6ff;
    border-color: #cfe1ff;
    color: #1d4ed8;
}

.fl-success {
    background: #ecfdf3;
    border-color: #bde7cd;
    color: #166534;
}

.fl-danger {
    background: #fef2f2;
    border-color: #f5c6c6;
    color: #b91c1c;
}

.fl-form {
    padding: 16px 18px 18px;
}

.fl-field {
    margin-bottom: 14px;
}

.fl-field label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: #475569;
    font-weight: 600;
}

.fl-field label span {
    color: #ef4444;
}

.fl-field input,
.fl-field textarea {
    width: 100%;
    border: 1px solid #d1dae8;
    background: #fff;
    border-radius: 10px;
    padding: 0 12px;
    font-size: 14px;
    color: #111827;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.fl-field input {
    height: 40px;
}

.fl-field textarea {
    min-height: 100px;
    resize: vertical;
    padding: 10px 12px;
    line-height: 1.6;
}

.fl-field input:focus,
.fl-field textarea:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 4px rgba(96, 165, 250, .16);
}

.fl-grid2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.fl-submit {
    width: 100%;
    height: 44px;
    margin-top: 4px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(90deg, #2563eb 0%, #3b82f6 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .08s, filter .15s;
}

.fl-submit:hover {
    filter: brightness(1.03);
}

.fl-submit:active {
    transform: translateY(1px);
}

.fl-side {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.fl-panel {
    background: #fff;
    border: 1px solid #d9e2ee;
    border-radius: 14px;
    padding: 14px;
}

.fl-panel h3 {
    margin: 0 0 10px;
    font-size: 16px;
    color: #1e293b;
}

.fl-panel ul,
.fl-panel ol {
    margin: 0;
    padding-left: 18px;
    color: #475569;
}

.fl-panel li {
    margin-bottom: 8px;
    font-size: 13px;
}

.fl-panel ol li {
    margin-bottom: 10px;
}

.fl-panel li strong {
    display: block;
    color: #1f2937;
    font-size: 13px;
    margin-bottom: 2px;
}

.fl-panel li span {
    color: #6b7280;
    font-size: 12px;
}

@media (max-width: 980px) {
    .fl-layout {
        grid-template-columns: 1fr;
    }

    .fl-side {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 74px;
    }

    .fl-page {
        padding: 12px 10px 24px;
    }

    .fl-hero h1 {
        font-size: 28px;
    }

    .fl-hero p {
        font-size: 14px;
    }

    .fl-main-head {
        flex-direction: column;
        gap: 4px;
        align-items: flex-start;
    }

    .fl-grid2 {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .fl-side {
        grid-template-columns: 1fr;
    }

    .fl-field input,
    .fl-field textarea {
        font-size: 16px;
    }
}