/* ===== BRIEF PAGE ===== */
.page-brief .main-nav {
    background: rgba(255, 255, 255, 0.96);
}

.brief-page {
    padding: calc(var(--nav-h) + 48px) 0 80px;
}

.brief-wrap {
    max-width: 820px;
}

.brief-hero {
    margin-bottom: 40px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line);
}

.brief-hero h1 {
    margin-bottom: 14px;
    max-width: 18ch;
}

.brief-lead {
    color: var(--ink-soft);
    font-size: 1.05rem;
    max-width: 48ch;
    margin-bottom: 24px;
}

.brief-progress {
    height: 3px;
    background: var(--line);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 8px;
}

.brief-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 0.35s var(--ease);
}

.brief-progress-text {
    font-size: 0.82rem;
    color: var(--muted);
    font-weight: 500;
}

.brief-form .form-status {
    margin-bottom: 24px;
}

.brief-block {
    padding: 36px 0;
    border-bottom: 1px solid var(--line);
}

.brief-block-contacts {
    border-bottom: none;
}

.brief-block-head {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 28px;
}

.brief-block-num {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--accent);
    padding-top: 6px;
}

.brief-block-head h2 {
    font-size: clamp(1.35rem, 2.5vw, 1.65rem);
    margin-bottom: 4px;
}

.brief-block-head p {
    color: var(--muted);
    font-size: 0.95rem;
    margin: 0;
}

.req {
    color: var(--accent);
    font-style: normal;
    font-weight: 700;
}

.brief-fieldset {
    border: none;
    margin: 0 0 22px;
    padding: 0;
}

.brief-fieldset legend {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink-soft);
    margin-bottom: 12px;
    padding: 0;
}

.check-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    min-height: 44px;
    padding: 6px 0;
    font-size: 0.98rem;
    color: var(--ink);
    cursor: pointer;
}

.check-row input[type="radio"],
.check-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    flex-shrink: 0;
    cursor: pointer;
}

.check-row-extra {
    align-items: center;
}

.inline-input {
    flex: 1 1 160px;
    min-width: 140px;
    max-width: 320px;
    font: inherit;
    color: var(--ink);
    background: var(--bg-elevated);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 12px;
    min-height: 40px;
}

.inline-input:disabled {
    opacity: 0.45;
    background: var(--bg);
}

.inline-input:focus {
    outline: none;
    border-color: var(--ink);
}

.brief-fieldset.is-invalid,
.field.is-invalid-wrap .field-error {
    /* structural hook */
}

.brief-fieldset.is-invalid legend,
.brief-block .field-error:not([hidden]) {
    color: var(--accent);
}

.brief-contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 20px;
}

.brief-contacts-grid .field-span {
    grid-column: 1 / -1;
}

.brief-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
}

.form-alt {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-size: 0.9rem;
    color: var(--ink-soft);
    line-height: 1.5;
}

.form-alt a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid rgba(196, 30, 42, 0.35);
}

.form-alt a:hover {
    border-bottom-color: var(--accent);
}

.form-alt-note {
    display: block;
    margin-top: 4px;
    font-size: 0.82rem;
    color: var(--muted);
}

@media (max-width: 768px) {
    .brief-page {
        padding: calc(var(--nav-h) + 32px) 0 64px;
    }

    .brief-hero h1 {
        max-width: none;
    }

    .brief-contacts-grid {
        grid-template-columns: 1fr;
    }

    .brief-actions {
        flex-direction: column;
    }

    .brief-actions .btn {
        width: 100%;
    }
}