.diag-hero-section {
    background-color: var(--color-bg-white, #ffffff);
    padding: 112px 24px 32px;
}

@media (min-width: 1024px) {
    .diag-hero-section {
        padding: 160px 24px 48px;
    }
}

.diag-hero-inner {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.diag-hero-label {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-secondary, #666666);
    margin-bottom: 16px;
}

.diag-hero-title {
    font-family: 'Inter', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: var(--color-text-primary, #333333);
    letter-spacing: -0.035em;
    line-height: 1.06;
    margin-bottom: 24px;
}

.diag-hero-description {
    font-family: 'Inter', sans-serif;
    font-size: clamp(15px, 2vw, 18px);
    font-weight: 400;
    color: var(--color-text-secondary, #666666);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto;
}


/* ═══════════════════════════════════════════════════════════
   Progress Bar
═══════════════════════════════════════════════════════════ */
.progress-section {
    background-color: var(--color-bg-white, #ffffff);
    padding: 0 24px 24px;
}

.progress-inner {
    max-width: 520px;
    margin: 0 auto;
}

.progress-track {
    display: flex;
    align-items: center;
}

.progress-step {
    display: flex;
    align-items: center;
    flex: 1;
}

.progress-step--last {
    flex: 0;
}

.progress-step-head {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* Dot */
.progress-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.progress-dot--active {
    background-color: var(--color-bg-dark, #1A1A2E);
    color: var(--color-text-white, #ffffff);
}

.progress-dot--inactive {
    background-color: var(--color-border-medium, #d0d0d0);
    color: var(--color-border-medium, #d0d0d0);
}

/* Label */
.progress-label {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary, #666666);
    display: none;
}

@media (min-width: 480px) {
    .progress-label {
        display: inline;
    }
}

.progress-step--inactive .progress-label {
    opacity: 0.4;
}

/* Connector line */
.progress-line {
    flex: 1;
    height: 2px;
    margin: 0 10px;
}

.progress-line--active {
    background-color: var(--color-text-secondary, #666666);
}

.progress-line--inactive {
    background-color: var(--color-border-medium, #d0d0d0);
}


/* ═══════════════════════════════════════════════════════════
   Form Section
═══════════════════════════════════════════════════════════ */
.diag-form-section {
    background-color: var(--color-bg-white, #ffffff);
    padding: 0 24px 112px;
}

@media (min-width: 1024px) {
    .diag-form-section {
        padding-bottom: 160px;
    }
}

.diag-form-inner {
    max-width: 600px;
    margin: 0 auto;
}

/* ─── Card ──────────────────────────────────────────────── */
.diag-form-card {
    background-color: var(--color-bg-white, #ffffff);
    border: 1px solid rgba(30, 30, 50, 0.12);
    border-radius: 16px;
    padding: 32px;
}

@media (min-width: 1024px) {
    .diag-form-card {
        padding: 40px;
    }
}

.diag-form-title {
    font-family: 'Inter', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-primary, #333333);
    letter-spacing: -0.02em;
    margin-bottom: 6px;
}

.diag-form-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    color: var(--color-text-secondary, #666666);
    line-height: 1.5;
    margin-bottom: 28px;
}

/* ─── Field base ────────────────────────────────────────── */
.diag-field {
    margin-bottom: 0;
}

.diag-label {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary, #666666);
    margin-bottom: 6px;
}

.diag-required {
    color: var(--color-text-secondary, #666666);
}

.diag-hint {
    font-family: 'Inter', sans-serif;
    font-size: 10px;
    color: var(--color-text-placeholder, #999999);
    margin-top: 4px;
}

/* ─── Asset type grid ───────────────────────────────────── */
.diag-asset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 24px;
}

@media (min-width: 480px) {
    .diag-asset-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.diag-asset-btn {
    padding: 12px;
    border-radius: 10px;
    text-align: left;
    cursor: pointer;
    border: 1px solid rgba(30, 30, 50, 0.12);
    background-color: var(--color-bg-white, #ffffff);
    color: var(--color-text-secondary, #666666);
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.diag-asset-btn:hover {
    border-color: var(--color-text-primary, #333333);
}

.diag-asset-btn--active {
    background-color: var(--color-bg-dark, #1A1A2E);
    color: var(--color-text-white, #ffffff);
    border-color: var(--color-bg-dark, #1A1A2E);
}

.diag-asset-icon {
    display: block;
    font-size: 1.25rem;
    margin-bottom: 4px;
    line-height: 1;
}

.diag-asset-name {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    line-height: 1.3;
}

/* ─── Fields grid ───────────────────────────────────────── */
.diag-fields-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

@media (min-width: 480px) {
    .diag-fields-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.diag-field--full {
    grid-column: 1 / -1;
}

/* ─── Inputs ────────────────────────────────────────────── */
.diag-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.diag-input-prefix {
    position: absolute;
    left: 12px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--color-text-secondary, #666666);
    pointer-events: none;
    z-index: 1;
}

.diag-input-suffix {
    position: absolute;
    right: 12px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--color-text-secondary, #666666);
    pointer-events: none;
}

.diag-input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid rgba(30, 30, 50, 0.12);
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--color-text-primary, #333333);
    background: var(--color-bg-white, #ffffff);
    outline: none;
    transition: border-color 0.2s ease;
    -moz-appearance: textfield;
}

.diag-input::-webkit-outer-spin-button,
.diag-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.diag-input::placeholder {
    color: var(--color-text-placeholder, #999999);
}

.diag-input:focus {
    border-color: var(--color-text-primary, #333333);
}

.diag-input--prefix {
    padding-left: 26px;
}

.diag-input--suffix {
    padding-right: 36px;
}

/* ─── Submit ────────────────────────────────────────────── */
.diag-submit {
    width: 100%;
    padding: 14px;
    background-color: var(--color-bg-dark, #1A1A2E);
    color: var(--color-text-white, #ffffff);
    border: none;
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease;
    margin-bottom: 16px;
}

.diag-submit:hover:not(:disabled) {
    opacity: 0.85;
}

.diag-submit:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ─── Privacy note ──────────────────────────────────────── */
.diag-privacy {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    color: var(--color-text-placeholder, #999999);
    text-align: center;
    line-height: 1.5;
}