:root {
    --color-primary: #56AF31;
    --color-primary-dark: #438D26;
    --color-primary-soft: rgba(86, 175, 49, 0.12);
    --color-primary-softer: rgba(86, 175, 49, 0.07);
    --color-text: #000000;
    --color-muted: #555555;
    --color-border: #D9D9D9;
    --color-border-strong: #BDBDBD;
    --color-background: #FFFFFF;
    --color-surface: #FFFFFF;
    --color-surface-soft: #F7F8F6;
    --color-footer: #1F1F1F;
    --color-footer-border: #3A3A3A;
    --color-error: #B42318;
    --color-error-soft: #FDECEC;
    --color-success: #187A2F;
    --color-success-soft: #EAF7EC;
    --color-warning: #B26A00;
    --color-warning-soft: #FFF4E2;
    --font-family: "Myriad Pro", Arial, sans-serif;
    --shadow-soft: 0 14px 40px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 10px 28px rgba(0, 0, 0, 0.07);
    --shadow-card-hover: 0 16px 38px rgba(0, 0, 0, 0.12);
    --transition-fast: 160ms ease;
    --transition-medium: 260ms ease;
    --transition-slow: 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --container-width: 1180px;
    --header-min-height: 128px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(86, 175, 49, 0.10), transparent 34rem),
        linear-gradient(180deg, #FFFFFF 0%, #FAFAFA 100%);
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

body.is-rtl {
    direction: rtl;
}

img,
svg {
    display: block;
    max-width: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
}

.page-shell {
    width: min(100%, var(--container-width));
    margin: 0 auto;
    padding: 18px 22px 28px;
    flex: 1 0 auto;
}

.skip-link {
    position: fixed;
    inset-inline-start: 20px;
    top: 14px;
    z-index: 1000;
    transform: translateY(-140%);
    padding: 10px 14px;
    color: #FFFFFF;
    background: var(--color-primary);
    text-decoration: none;
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
    outline: 3px solid #000000;
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.honeypot {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.site-header {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    margin-bottom: 18px;
}

.site-header__inner {
    min-height: var(--header-min-height);
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr) auto;
    gap: 24px;
    align-items: center;
    padding: 20px 24px;
}

.site-logo-link {
    width: 100px;
    height: 100px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-logo-link:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.site-logo-link:focus-visible,
.language-select:focus-visible,
.button:focus-visible,
.option-card:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(86, 175, 49, 0.45);
    outline-offset: 3px;
}

.site-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.site-title-block {
    align-self: end;
    padding: 0 0 7px;
    border-bottom: 3px solid var(--color-primary);
}

.eyebrow,
.section-kicker {
    margin: 0 0 5px;
    color: var(--color-primary);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-title-block h1 {
    margin: 0;
    color: var(--color-text);
    font-size: clamp(1.9rem, 4.5vw, 3.7rem);
    line-height: 1;
    font-weight: 800;
    letter-spacing: -0.035em;
}

.language-form {
    align-self: start;
    margin: 0;
}

.language-select {
    min-width: 164px;
    height: 42px;
    padding: 0 42px 0 12px;
    color: var(--color-text);
    background-color: #FFFFFF;
    border: 1px solid var(--color-border-strong);
    appearance: none;
    background-image:
        linear-gradient(45deg, transparent 50%, #111111 50%),
        linear-gradient(135deg, #111111 50%, transparent 50%),
        linear-gradient(to right, var(--color-border), var(--color-border));
    background-position:
        calc(100% - 18px) 17px,
        calc(100% - 12px) 17px,
        calc(100% - 34px) 8px;
    background-size:
        6px 6px,
        6px 6px,
        1px 26px;
    background-repeat: no-repeat;
}

.is-rtl .language-select {
    padding: 0 12px 0 42px;
    background-position:
        18px 17px,
        12px 17px,
        34px 8px;
}

.main-content {
    display: grid;
    gap: 18px;
}

.intro-section {
    display: grid;
    gap: 12px;
}

.intro-text-box,
.intro-images,
.configurator-card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
}

.intro-text-box {
    padding: clamp(22px, 4vw, 38px);
    text-align: center;
}

.intro-text-box h2 {
    margin: 0 0 12px;
    font-size: clamp(1.7rem, 3.4vw, 3.2rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.intro-text-box p {
    max-width: 900px;
    margin: 0 auto;
    color: var(--color-muted);
    font-size: clamp(1rem, 1.5vw, 1.18rem);
}

.intro-images {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    padding: 28px;
}

.intro-image-card {
    min-height: 230px;
    margin: 0;
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.intro-image-card img {
    width: 100%;
    height: 100%;
    min-height: 230px;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-medium);
}

.intro-image-card:hover img {
    transform: scale(1.025);
    filter: saturate(1.04) contrast(1.02);
}

.configurator-section {
    scroll-margin-top: 18px;
}

.configurator-card {
    min-height: 780px;
    padding: clamp(20px, 3vw, 34px);
}

.configurator-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--color-border);
}

.configurator-header h2 {
    margin: 0;
    font-size: clamp(1.85rem, 3.2vw, 3.1rem);
    line-height: 1;
    letter-spacing: -0.035em;
}

.step-counter {
    margin: 0;
    padding: 9px 12px;
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
    border-left: 4px solid var(--color-primary);
    font-weight: 800;
    white-space: nowrap;
}

.is-rtl .step-counter {
    border-left: 0;
    border-right: 4px solid var(--color-primary);
}

.progress {
    margin-bottom: 30px;
}

.progress__bar {
    height: 8px;
    background: #E8E8E8;
    overflow: hidden;
    position: relative;
}

.progress__fill {
    display: block;
    width: 20%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #79C95B);
    transition: width var(--transition-slow);
}

.progress__steps {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    margin: 14px 0 0;
    padding: 0;
    list-style: none;
}

.progress__step {
    display: flex;
    align-items: center;
    min-width: 0;
    gap: 8px;
    color: var(--color-muted);
    font-size: 0.92rem;
    transition: color var(--transition-fast);
}

.progress__number {
    flex: 0 0 30px;
    width: 30px;
    height: 30px;
    display: inline-grid;
    place-items: center;
    color: #444444;
    background: #F0F0F0;
    border: 1px solid var(--color-border);
    font-weight: 800;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.progress__label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.progress__step.is-active,
.progress__step.is-complete {
    color: var(--color-text);
}

.progress__step.is-active .progress__number,
.progress__step.is-complete .progress__number {
    color: #FFFFFF;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.wizard-form {
    position: relative;
}

.wizard-viewport {
    position: relative;
    min-height: 560px;
}

.wizard-step {
    margin: 0;
    padding: 0;
    border: 0;
    min-inline-size: 0;
    animation: stepIn var(--transition-slow) both;
}

.wizard-step[hidden] {
    display: none !important;
}

.wizard-step.is-leaving {
    animation: stepOut 180ms ease both;
}

@keyframes stepIn {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes stepOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-8px);
    }
}

.step-heading {
    margin-bottom: 24px;
}

.step-heading h3 {
    margin: 0 0 8px;
    font-size: clamp(1.55rem, 2.3vw, 2.35rem);
    line-height: 1.08;
    letter-spacing: -0.025em;
}

.step-heading p {
    max-width: 820px;
    margin: 0;
    color: var(--color-muted);
}

.option-grid {
    display: grid;
    gap: 16px;
}

.option-grid--borders {
    grid-template-columns: repeat(auto-fit, minmax(156px, 1fr));
}

.option-grid--images {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.option-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 154px;
    width: 100%;
    padding: 16px;
    color: var(--color-text);
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    text-align: center;
    text-decoration: none;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast);
}

button.option-card {
    appearance: none;
}

.option-card:hover {
    transform: translateY(-3px);
    border-color: rgba(86, 175, 49, 0.65);
    box-shadow: var(--shadow-card-hover);
}

.option-card.is-selected,
.option-card:has(input:checked) {
    border-color: var(--color-primary);
    background: linear-gradient(180deg, #FFFFFF 0%, var(--color-primary-softer) 100%);
    box-shadow: 0 16px 34px rgba(86, 175, 49, 0.18);
}

.option-card.is-selected::after,
.option-card:has(input:checked)::after {
    content: "";
    position: absolute;
    top: 10px;
    inset-inline-end: 10px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    box-shadow: inset 0 0 0 4px #FFFFFF;
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-card__visual {
    flex: 1 1 auto;
    min-height: 92px;
    display: grid;
    place-items: center;
    margin-bottom: 12px;
}

.option-card__visual--image {
    min-height: 150px;
    background: var(--color-surface-soft);
    border: 1px solid #ECECEC;
    overflow: hidden;
}

.option-card__visual--image img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    padding: 12px;
}

.option-card__label {
    display: block;
    font-weight: 800;
    line-height: 1.2;
}

.border-preview-svg {
    width: 94px;
    height: 94px;
}

.shape-outline,
.shape-divider,
.shape-accent {
    fill: none;
    stroke: #111111;
    stroke-width: 4;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
    transition: stroke var(--transition-fast);
}

.shape-outline--tuv {
    stroke-width: 3.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.shape-accent {
    stroke: var(--color-primary);
}

.option-card:hover .shape-outline,
.option-card:hover .shape-divider,
.option-card.is-selected .shape-outline,
.option-card.is-selected .shape-divider {
    stroke: var(--color-primary-dark);
}

.upload-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 20px;
    align-items: start;
    margin-top: 28px;
    padding: 20px;
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
}

.logo-preview {
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    padding: 14px;
}

.logo-preview__title {
    margin: 0 0 8px;
    font-weight: 800;
}

.logo-preview img {
    width: 100%;
    height: 130px;
    object-fit: contain;
    background:
        linear-gradient(45deg, #F4F4F4 25%, transparent 25%),
        linear-gradient(-45deg, #F4F4F4 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #F4F4F4 75%),
        linear-gradient(-45deg, transparent 75%, #F4F4F4 75%);
    background-size: 18px 18px;
    background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}

.choice-block {
    margin-bottom: 32px;
}

.choice-block h4 {
    margin: 0 0 6px;
    font-size: 1.15rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.contact-grid {
    align-items: start;
}

.field-group {
    display: grid;
    gap: 8px;
    align-content: start;
}

/*
 * Das display:grid der Feldgruppe darf das HTML-hidden-Attribut nicht
 * überschreiben. Dadurch werden die beiden Höhenfelder vollständig
 * aus dem Layout entfernt.
 */
.field-group[hidden] {
    display: none !important;
}

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

label {
    font-weight: 800;
}

.required-marker {
    color: var(--color-primary);
    font-weight: 900;
}

input,
select,
textarea {
    width: 100%;
    color: var(--color-text);
    background: #FFFFFF;
    border: 1px solid var(--color-border-strong);
    padding: 12px 13px;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast);
}

input,
select {
    min-height: 48px;
}

textarea {
    min-height: 190px;
    resize: vertical;
}

input:hover,
select:hover,
textarea:hover {
    border-color: #8F8F8F;
}

input.is-invalid,
select.is-invalid,
textarea.is-invalid {
    border-color: var(--color-error);
    background: #FFFDFD;
    box-shadow: 0 0 0 3px rgba(180, 35, 24, 0.10);
}

input.is-valid,
select.is-valid,
textarea.is-valid {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(86, 175, 49, 0.10);
}

input[type="file"] {
    padding: 10px;
    background: #FFFFFF;
}

input[type="file"]::file-selector-button {
    margin-inline-end: 12px;
    padding: 9px 13px;
    color: #FFFFFF;
    background: var(--color-primary);
    border: 0;
    font-weight: 800;
    cursor: pointer;
    transition: background var(--transition-fast);
}

input[type="file"]::file-selector-button:hover {
    background: var(--color-primary-dark);
}

.input-with-unit {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 58px;
}

.input-with-unit input {
    border-inline-end: 0;
}

.input-with-unit span {
    display: grid;
    place-items: center;
    min-height: 48px;
    background: #F2F2F2;
    border: 1px solid var(--color-border-strong);
    color: var(--color-muted);
    font-weight: 800;
}

.is-rtl .input-with-unit input {
    border-inline-end: 1px solid var(--color-border-strong);
    border-inline-start: 0;
}

.field-help,
.field-error {
    margin: 0;
    font-size: 0.92rem;
}

.field-help {
    color: var(--color-muted);
}

.field-error {
    min-height: 1.35em;
    color: var(--color-error);
    font-weight: 700;
}

.form-message {
    margin-top: 18px;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    background: var(--color-surface-soft);
    font-weight: 700;
}

.form-message[hidden] {
    display: none;
}

.form-message--error {
    color: var(--color-error);
    background: var(--color-error-soft);
    border-color: rgba(180, 35, 24, 0.28);
}

.form-message--success {
    color: var(--color-success);
    background: var(--color-success-soft);
    border-color: rgba(24, 122, 47, 0.28);
}

.form-message--warning {
    color: var(--color-warning);
    background: var(--color-warning-soft);
    border-color: rgba(178, 106, 0, 0.28);
}

.preview-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
    gap: 24px;
    align-items: stretch;
}

.stamp-preview-panel {
    min-height: 520px;
    display: grid;
    place-items: center;
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px),
        linear-gradient(0deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px),
        #FCFCFC;
    background-size: 28px 28px;
    border: 1px solid var(--color-border);
    padding: 20px;
    overflow: hidden;
}

.stamp-preview {
    position: relative;
    width: min(100%, 520px);
    aspect-ratio: 1 / 1;
    display: grid;
    place-items: center;
}

.stamp-preview svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.stamp-preview__placeholder {
    margin: 0;
    max-width: 280px;
    text-align: center;
    color: var(--color-muted);
    font-weight: 700;
}

.preview-summary {
    padding: 22px;
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
}

.preview-summary h4 {
    margin: 0 0 18px;
    font-size: 1.25rem;
}

.preview-summary dl {
    margin: 0;
    display: grid;
    gap: 12px;
}

.preview-summary dl > div {
    display: grid;
    gap: 3px;
    padding-bottom: 12px;
    border-bottom: 1px solid #E2E2E2;
}

.preview-summary dt {
    color: var(--color-muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.preview-summary dd {
    margin: 0;
    font-weight: 800;
    overflow-wrap: anywhere;
}

.recaptcha-note {
    margin: 18px 0 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.wizard-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.wizard-actions--end {
    justify-content: flex-end;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 142px;
    min-height: 50px;
    padding: 12px 22px;
    border: 1px solid transparent;
    font-weight: 900;
    text-decoration: none;
    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        opacity var(--transition-fast);
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
}

.button:active {
    transform: translateY(0);
    box-shadow: none;
}

.button:disabled,
.button.is-loading {
    opacity: 0.62;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.button--primary {
    color: #FFFFFF;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.button--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.button--secondary {
    color: var(--color-text);
    background: #FFFFFF;
    border-color: var(--color-border-strong);
}

.button--secondary:hover {
    color: var(--color-primary-dark);
    border-color: var(--color-primary);
}

.site-footer {
    flex: 0 0 auto;
    min-height: 56px;
    color: #FFFFFF;
    background: var(--color-footer);
    border-top: 1px solid var(--color-footer-border);
    font-family: var(--font-family);
}

.site-footer__inner {
    width: min(100%, var(--container-width));
    min-height: 56px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-footer__copyright {
    margin: 0;
    font-size: 0.94rem;
}

.site-footer__links {
    display: flex;
    align-items: center;
    gap: 22px;
}

.site-footer__links a {
    color: #FFFFFF;
    text-decoration: none;
    font-size: 0.94rem;
    transition: color var(--transition-fast);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
    color: var(--color-primary);
}

.site-footer__links a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
}

.stamp-svg-outline {
    fill: none;
    stroke: #111111;
    stroke-width: 5;
    stroke-linecap: square;
    stroke-linejoin: miter;
    vector-effect: non-scaling-stroke;
}

.stamp-svg-outline--tuv {
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.stamp-svg-divider {
    stroke: #111111;
    stroke-width: 3;
    stroke-linecap: square;
    vector-effect: non-scaling-stroke;
}

.stamp-svg-text {
    fill: #111111;
    font-family: var(--font-family);
    font-weight: 800;
    letter-spacing: 0.04em;
    text-anchor: middle;
    dominant-baseline: middle;
}

.stamp-svg-meta {
    fill: #444444;
    font-family: var(--font-family);
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: middle;
}

.stamp-svg-logo-frame {
    fill: #FFFFFF;
    stroke: rgba(86, 175, 49, 0.55);
    stroke-width: 2;
    vector-effect: non-scaling-stroke;
}

.stamp-svg-logo-placeholder {
    fill: var(--color-primary-soft);
    stroke: var(--color-primary);
    stroke-width: 2;
    vector-effect: non-scaling-stroke;
}

.stamp-svg-logo-text {
    fill: var(--color-primary-dark);
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 900;
    text-anchor: middle;
    dominant-baseline: middle;
}

.stamp-svg-surface {
    fill: #FFFFFF;
    stroke: #E1E1E1;
    stroke-width: 1;
}

.stamp-svg-shadow {
    fill: rgba(0, 0, 0, 0.06);
}

@media (max-width: 1040px) {
    .option-grid--borders {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }

    .preview-layout {
        grid-template-columns: 1fr;
    }

    .stamp-preview-panel {
        min-height: 460px;
    }

    .preview-summary {
        order: 2;
    }
}

@media (max-width: 820px) {
    .page-shell {
        padding: 12px 12px 22px;
    }

    .site-header__inner {
        grid-template-columns: 78px minmax(0, 1fr);
        gap: 16px;
        padding: 16px;
    }

    .site-logo-link {
        width: 78px;
        height: 78px;
    }

    .language-form {
        grid-column: 1 / -1;
        justify-self: stretch;
        align-self: auto;
    }

    .language-select {
        width: 100%;
    }

    .site-title-block {
        align-self: center;
    }

    .intro-images {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 16px;
    }

    .configurator-card {
        min-height: 0;
        padding: 18px;
    }

    .configurator-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .progress__steps {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .progress__step {
        display: none;
    }

    .progress__step.is-active {
        display: flex;
    }

    .option-grid--images,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .upload-panel {
        grid-template-columns: 1fr;
    }

    .wizard-actions {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .wizard-actions--end {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .site-footer__inner {
        min-height: 84px;
        padding: 14px 20px;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        gap: 8px;
    }

    .site-footer__links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px 18px;
    }
}

@media (max-width: 560px) {
    body {
        font-size: 15px;
    }

    .site-header__inner {
        grid-template-columns: 64px minmax(0, 1fr);
    }

    .site-logo-link {
        width: 64px;
        height: 64px;
    }

    .site-title-block h1 {
        font-size: clamp(1.4rem, 8vw, 2.1rem);
        letter-spacing: -0.025em;
    }

    .eyebrow,
    .section-kicker {
        font-size: 0.76rem;
    }

    .intro-text-box,
    .configurator-card {
        padding: 16px;
    }

    .intro-image-card,
    .intro-image-card img {
        min-height: 180px;
    }

    .option-grid--borders {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .option-card {
        min-height: 138px;
        padding: 12px;
    }

    .border-preview-svg {
        width: 78px;
        height: 78px;
    }

    .option-card__visual {
        min-height: 78px;
    }

    .option-card__visual--image,
    .option-card__visual--image img {
        min-height: 130px;
        height: 130px;
    }

    .stamp-preview-panel {
        min-height: 340px;
        padding: 12px;
    }

    .preview-summary {
        padding: 16px;
    }

    .input-with-unit {
        grid-template-columns: minmax(0, 1fr) 52px;
    }
}

@media (max-width: 380px) {
    .option-grid--borders {
        grid-template-columns: 1fr;
    }

    .site-title-block h1 {
        font-size: 1.4rem;
    }

    .step-counter {
        width: 100%;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 1ms !important;
    }
}

@supports not selector(:has(*)) {
    .image-option-card input[type="radio"]:checked + .option-card__visual {
        outline: 3px solid var(--color-primary);
        outline-offset: 3px;
    }
}