.portal-hero {
    background: linear-gradient(135deg, #fff7f3 0%, #fff 55%, #f4f7fb 100%);
    border-bottom: 1px solid rgba(31, 39, 51, .08);
    padding: clamp(4rem, 8vw, 7rem) 0 clamp(3rem, 6vw, 5rem);
}

.portal-hero h1 {
    font-size: clamp(2.7rem, 7vw, 5.6rem);
    line-height: .98;
    margin: .35rem 0 1.2rem;
    max-width: 12ch;
}

.portal-hero p:last-child {
    color: var(--muted, #626b78);
    font-size: 1.15rem;
    max-width: 760px;
}

.topic-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.topic-card,
.submission-panel,
.submission-rules,
.portal-empty {
    background: #fff;
    border: 1px solid rgba(31, 39, 51, .1);
    border-radius: 24px;
    box-shadow: 0 18px 55px rgba(31, 39, 51, .07);
    padding: clamp(1.35rem, 3vw, 2rem);
}

.topic-card h2 {
    font-size: 1.45rem;
    margin: .35rem 0 .8rem;
}

.topic-card-image {
    border-radius: 24px 24px 0 0;
    display: block;
    margin: -2rem -2rem 1.5rem;
    overflow: hidden;
}

.topic-card-image img {
    aspect-ratio: 16 / 9;
    display: block;
    object-fit: cover;
    width: 100%;
}

.submission-layout {
    align-items: start;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, .8fr);
}

.submission-form {
    display: grid;
    gap: .75rem;
}

.submission-form input,
.submission-form select,
.submission-form textarea {
    background: #fff;
    border: 1px solid #cbd2dc;
    border-radius: 10px;
    font: inherit;
    padding: .85rem 1rem;
    width: 100%;
}

.submission-form input[readonly] {
    background: #f7f1e8;
    color: var(--ink, #201a18);
}

.submission-form label {
    font-weight: 700;
    margin-top: .5rem;
}

.submission-form .consent-row {
    align-items: flex-start;
    display: flex;
    font-size: .95rem;
    font-weight: 400;
    gap: .7rem;
}

.submission-form .consent-row input {
    margin-top: .2rem;
    width: auto;
}

.claim-existing-account {
    border-bottom: 1px solid rgba(31, 39, 51, .1);
    border-top: 1px solid rgba(31, 39, 51, .1);
    margin: .8rem 0 .35rem;
    padding: 1.2rem 0;
}

.claim-existing-account p {
    margin-bottom: .85rem;
}

.form-honeypot {
    height: 1px;
    left: -9999px;
    overflow: hidden;
    position: absolute;
    width: 1px;
}

.form-notice {
    border-radius: 12px;
    margin-bottom: 1.2rem;
    padding: 1rem 1.15rem;
}

.form-notice-success { background: #e8f7ed; color: #155c2f; }
.form-notice-info { background: #eef4fb; color: #234c75; }
.form-notice-error { background: #fff0ed; color: #8b2d1d; }

.submission-rules ol {
    padding-left: 1.25rem;
}

.submission-rules li + li {
    margin-top: .8rem;
}

.prose-content {
    background: #fff;
    border: 1px solid rgba(31, 39, 51, .1);
    border-radius: 24px;
    box-shadow: 0 18px 55px rgba(31, 39, 51, .07);
    max-width: 900px;
    padding: clamp(1.5rem, 4vw, 3rem);
}

.prose-content h2 {
    font-size: clamp(1.65rem, 4vw, 2.35rem);
    margin: 2.4rem 0 .8rem;
}

.prose-content h2:first-child {
    margin-top: 0;
}

.prose-content ol {
    padding-left: 1.4rem;
}

.prose-content li + li {
    margin-top: 1rem;
}

.prose-content p,
.prose-content li {
    line-height: 1.7;
}

@media (max-width: 900px) {
    .topic-grid { grid-template-columns: 1fr 1fr; }
    .submission-layout { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
    .topic-grid { grid-template-columns: 1fr; }
}