:root {
    --activity-card-bg: rgba(255, 255, 255, 0.74);
    --activity-card-bg-strong: rgba(255, 255, 255, 0.86);
    --activity-card-border: rgba(18, 21, 28, 0.08);
    --activity-card-shadow: 0 18px 42px rgba(16, 22, 35, 0.08);
    --activity-muted: #6d7382;
}

.activity-shell-body .page-background::before {
    top: -10vh;
    right: -10vw;
    width: 40vw;
    height: 40vw;
}

.activity-shell-body .page-background::after {
    left: -14vw;
    bottom: -4vh;
    width: 28vw;
    height: 28vw;
}

.activity-main {
    padding-bottom: 2rem;
}

.activity-inline-status {
    min-height: 1.5rem;
    margin-top: 1.2rem;
    color: var(--home-muted);
    font-size: 0.94rem;
}

.activity-overview-hero,
.activity-detail-hero {
    min-height: auto;
    padding-top: 152px;
    padding-bottom: 4.2rem;
}

.activity-overview-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
    gap: 2rem;
    align-items: center;
}

.activity-overview-copy .hero-title {
    max-width: 14ch;
}

.activity-overview-metrics {
    max-width: 44rem;
}

.activity-overview-visual {
    position: relative;
}

.activity-board {
    position: relative;
    min-height: 560px;
    overflow: hidden;
    border-radius: 38px;
    border: 1px solid rgba(18, 21, 28, 0.08);
    background:
        radial-gradient(circle at top right, rgba(125, 184, 255, 0.28), transparent 34%),
        radial-gradient(circle at bottom left, rgba(156, 228, 214, 0.22), transparent 32%),
        linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(240, 244, 250, 0.92) 54%, rgba(234, 239, 246, 0.95));
    box-shadow: var(--home-shadow-strong);
}

.activity-board::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(18, 21, 28, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 21, 28, 0.05) 1px, transparent 1px);
    background-size: 96px 96px;
    opacity: 0.8;
    pointer-events: none;
}

.activity-board-header,
.activity-board-rows,
.activity-board-footer {
    position: relative;
    z-index: 1;
}

.activity-board-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem;
}

.activity-board-pill,
.activity-board-chip,
.activity-overview-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    letter-spacing: 0.04em;
}

.activity-board-pill {
    min-height: 40px;
    padding: 0 1rem;
    color: var(--home-text);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(18, 21, 28, 0.08);
}

.activity-board-rows {
    display: grid;
    gap: 1rem;
    padding: 0 1.4rem;
}

.activity-board-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.activity-board-card,
.activity-overview-panel,
.activity-list-card,
.activity-detail-panel,
.activity-signup-panel,
.result-showcase-card {
    border: 1px solid var(--activity-card-border);
    background: var(--activity-card-bg);
    box-shadow: var(--activity-card-shadow);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.activity-board-card {
    min-height: 124px;
    padding: 1.1rem;
    border-radius: 24px;
}

.activity-board-card span,
.activity-overview-panel span,
.activity-meta-pill,
.activity-list-label,
.activity-list-badge,
.result-showcase-label,
.activity-field-label {
    color: var(--home-muted-soft);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.activity-board-card strong,
.activity-overview-panel strong {
    display: block;
    margin-top: 0.55rem;
    color: var(--home-text);
    font-family: 'Sora', sans-serif;
    font-size: 1.2rem;
    line-height: 1.2;
    letter-spacing: -0.04em;
}

.activity-board-card p,
.activity-overview-panel p {
    margin: 0.55rem 0 0;
    color: var(--home-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

.activity-board-footer {
    position: absolute;
    left: 1.4rem;
    right: 1.4rem;
    bottom: 1.4rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.activity-board-chip {
    min-height: 52px;
    padding: 0 1rem;
    color: var(--home-text);
    font-size: 0.86rem;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(18, 21, 28, 0.08);
}

.activity-list-section {
    padding-top: 4rem;
    padding-bottom: 2.6rem;
}

.activity-section-shell {
    display: grid;
    gap: 1.4rem;
}

.activity-list-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
}

.activity-list-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    overflow: hidden;
    border-radius: 30px;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.activity-list-card:hover {
    transform: translateY(-4px);
    border-color: rgba(18, 21, 28, 0.12);
    box-shadow: 0 24px 50px rgba(16, 22, 35, 0.12);
}

.activity-list-media {
    position: relative;
    min-height: 220px;
    overflow: hidden;
    background:
        radial-gradient(circle at top right, rgba(125, 184, 255, 0.2), transparent 30%),
        linear-gradient(145deg, rgba(247, 250, 255, 0.95), rgba(238, 243, 249, 0.92));
}

.activity-list-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(18, 21, 28, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 21, 28, 0.05) 1px, transparent 1px);
    background-size: 88px 88px;
    opacity: 0.72;
    pointer-events: none;
}

.activity-list-media img {
    position: absolute;
    inset: 1.2rem;
    width: calc(100% - 2.4rem);
    height: calc(100% - 2.4rem);
    object-fit: cover;
    border-radius: 22px;
    border: 1px solid rgba(18, 21, 28, 0.06);
}

.activity-list-badge,
.activity-list-order {
    position: absolute;
    z-index: 1;
    top: 1rem;
    min-height: 36px;
    padding: 0 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(18, 21, 28, 0.08);
}

.activity-list-badge {
    left: 1rem;
    display: inline-flex;
    align-items: center;
}

.activity-list-order {
    right: 1rem;
    display: inline-flex;
    align-items: center;
    color: var(--home-text);
    font-size: 0.78rem;
    font-weight: 700;
}

.activity-list-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 0.9rem;
    padding: 1.35rem 1.35rem 1.5rem;
}

.activity-list-title,
.activity-subsection-title,
.result-showcase-title {
    margin: 0;
    color: var(--home-text);
    font-family: 'Sora', sans-serif;
    letter-spacing: -0.04em;
}

.activity-list-title {
    font-size: 1.55rem;
    line-height: 1.08;
}

.activity-list-summary,
.activity-rich-content,
.activity-result-copy,
.activity-signup-desc,
.activity-signup-note,
.activity-form-status,
.activity-topic-status,
.activity-login-hint,
.activity-empty-state {
    color: var(--home-muted);
    font-size: 0.96rem;
    line-height: 1.8;
}

.activity-list-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.activity-list-meta span,
.activity-signup-notice {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 0.8rem;
    border-radius: 999px;
    color: var(--home-muted);
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(18, 21, 28, 0.05);
    border: 1px solid rgba(18, 21, 28, 0.06);
}

.activity-list-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: auto;
}

.activity-list-state {
    color: var(--home-muted-soft);
    font-size: 0.88rem;
    font-weight: 700;
}

.activity-list-link,
.result-showcase-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 1rem;
    border-radius: 999px;
    color: #ffffff;
    background: #111111;
    font-size: 0.9rem;
    font-weight: 700;
}

.activity-empty-state {
    padding: 1.6rem;
    border-radius: 28px;
    border: 1px dashed rgba(18, 21, 28, 0.12);
    background: rgba(255, 255, 255, 0.42);
}

.activity-detail-copy {
    max-width: 62rem;
    margin: 0 auto;
    text-align: center;
}

.activity-detail-title {
    margin: 1.3rem 0 0;
    color: var(--home-text);
    font-family: 'Sora', sans-serif;
    font-size: clamp(2.9rem, 6vw, 5.2rem);
    line-height: 0.96;
    letter-spacing: -0.06em;
}

.activity-detail-summary {
    max-width: 42rem;
    margin: 1.2rem auto 0;
    color: var(--home-muted);
    font-size: 1.08rem;
    line-height: 1.8;
}

.activity-meta-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.activity-meta-pill {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(18, 21, 28, 0.08);
    color: var(--home-text);
    font-size: 0.82rem;
}

.activity-detail-panels {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2.2rem;
}

.activity-overview-panel {
    padding: 1.15rem 1.2rem;
    border-radius: 26px;
}

.activity-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 0.72fr);
    gap: 1.2rem;
    align-items: start;
}

.activity-detail-panel,
.activity-signup-panel {
    border-radius: 32px;
    padding: 1.5rem;
}

.activity-signup-panel {
    position: sticky;
    top: 112px;
}

.activity-subsection-title {
    font-size: 2rem;
    line-height: 1.02;
}

.activity-rich-content {
    margin-top: 1.2rem;
}

.activity-rich-content p,
.activity-result-copy p {
    margin: 0 0 1rem;
}

.activity-rich-content br + br,
.activity-result-copy br + br {
    display: block;
    content: '';
    margin-top: 0.7rem;
}

.activity-signup-desc {
    margin: 0.5rem 0 0;
}

.activity-signup-notice {
    margin-top: 1.2rem;
}

.activity-login-actions {
    margin-top: 1rem;
}

.activity-login-button,
.activity-submit-button {
    min-height: 48px;
    padding: 0 1.4rem;
}

.activity-form {
    margin-top: 1.5rem;
}

.activity-form-stack,
.activity-topic-wrap {
    display: grid;
    gap: 1rem;
}

.activity-form-field {
    display: grid;
    gap: 0.55rem;
}

.activity-field-label {
    color: var(--home-text);
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.92rem;
}

.activity-field-required {
    color: #d05d4e;
}

.activity-input,
.activity-select,
.activity-textarea {
    width: 100%;
    border: 1px solid rgba(18, 21, 28, 0.08);
    border-radius: 18px;
    padding: 0.9rem 1rem;
    color: var(--home-text);
    background: rgba(255, 255, 255, 0.72);
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.activity-input::placeholder,
.activity-textarea::placeholder {
    color: #9298a4;
}

.activity-input:focus,
.activity-select:focus,
.activity-textarea:focus {
    border-color: rgba(29, 95, 255, 0.32);
    box-shadow: 0 0 0 4px rgba(29, 95, 255, 0.08);
    background: rgba(255, 255, 255, 0.9);
}

.activity-textarea {
    min-height: 132px;
    resize: vertical;
}

.activity-checkbox-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.activity-checkbox-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 0.9rem;
    border-radius: 16px;
    border: 1px solid rgba(18, 21, 28, 0.08);
    background: rgba(255, 255, 255, 0.64);
    color: var(--home-text);
    font-size: 0.9rem;
}

.activity-checkbox-chip input {
    accent-color: #111111;
}

.activity-topic-chips {
    display: flex;
    gap: 0.7rem;
    overflow-x: auto;
    padding-bottom: 0.2rem;
}

.activity-topic-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 1rem;
    border-radius: 999px;
    color: var(--home-text);
    background: rgba(255, 255, 255, 0.64);
    border: 1px solid rgba(18, 21, 28, 0.08);
    font-size: 0.88rem;
    font-weight: 700;
    white-space: nowrap;
    transition: transform 160ms ease, background-color 160ms ease, color 160ms ease;
}

.activity-topic-chip.is-active {
    color: #ffffff;
    background: #111111;
}

.activity-topic-status,
.activity-form-status,
.activity-login-hint {
    min-height: 1.4rem;
    margin-top: 0.25rem;
    font-size: 0.88rem;
}

.activity-form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    align-items: center;
    margin-top: 1rem;
}

.activity-form-actions .button-primary[disabled],
.activity-rating-submit[disabled] {
    opacity: 0.58;
    cursor: not-allowed;
}

.activity-result-head {
    margin-bottom: 1.8rem;
}

.activity-result-copy {
    max-width: 52rem;
}

.result-gallery-shell {
    overflow: visible;
}

.result-gallery-track {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
    padding: 0.35rem 0 0.8rem;
}

.result-showcase-card {
    min-width: 0;
    overflow: hidden;
    border-radius: 28px;
}

.result-showcase-link {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.result-showcase-thumb {
    position: relative;
    min-height: 260px;
    overflow: hidden;
    background: linear-gradient(145deg, rgba(247, 250, 255, 0.95), rgba(238, 243, 249, 0.92));
}

.result-showcase-thumb img {
    position: absolute;
    inset: 1rem;
    width: calc(100% - 2rem);
    height: calc(100% - 2rem);
    object-fit: cover;
    border-radius: 22px;
    border: 1px solid rgba(18, 21, 28, 0.06);
}

.result-showcase-body {
    display: grid;
    gap: 0.8rem;
    padding: 1.15rem 1.2rem 1.3rem;
}

.result-showcase-card > .result-showcase-body {
    border-top: 1px solid rgba(18, 21, 28, 0.06);
    background: rgba(255, 255, 255, 0.58);
}

.result-showcase-title {
    font-size: 1.4rem;
    line-height: 1.1;
}

.result-showcase-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    margin-top: 0.2rem;
}

.result-showcase-note {
    color: var(--home-muted-soft);
    font-size: 0.84rem;
    font-weight: 600;
}

.activity-rating-shell {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.2rem;
}

.activity-rating-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
}

.activity-rating-summary {
    color: var(--home-muted);
    font-size: 0.8rem;
    line-height: 1.6;
}

.activity-rating-submit {
    min-height: 34px;
    padding: 0 0.9rem;
    border-radius: 999px;
    border: 1px solid rgba(18, 21, 28, 0.08);
    color: var(--home-text);
    background: rgba(18, 21, 28, 0.05);
    font-size: 0.82rem;
    font-weight: 700;
}

.activity-stars {
    display: flex;
    gap: 0.1rem;
}

.activity-star {
    padding: 0;
    border: none;
    background: transparent;
    font-size: 1.2rem;
    line-height: 1;
    color: #b5bbc6;
}

.activity-star.is-active {
    color: #f0b949;
}

.activity-star[disabled] {
    opacity: 0.58;
}

.activity-rating-status {
    color: var(--home-muted);
    font-size: 0.82rem;
    min-height: 1.2rem;
}

@media (max-width: 1279px) {
    .activity-list-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .result-gallery-track {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 1024px) {
    .activity-overview-shell,
    .activity-detail-grid,
    .activity-detail-panels {
        grid-template-columns: 1fr;
    }

    .result-gallery-track {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .activity-board {
        min-height: 500px;
    }

    .activity-board-row,
    .activity-board-footer {
        grid-template-columns: 1fr;
    }

    .activity-signup-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .activity-overview-hero,
    .activity-detail-hero {
        padding-top: 132px;
        padding-bottom: 3.2rem;
    }

    .activity-list-grid {
        grid-template-columns: 1fr;
    }

    .activity-board {
        min-height: auto;
    }

    .activity-board-header,
    .activity-board-rows,
    .activity-board-footer {
        position: relative;
    }

    .activity-board-footer {
        left: auto;
        right: auto;
        bottom: auto;
        padding: 1rem 1.4rem 1.4rem;
    }

    .activity-detail-title {
        font-size: clamp(2.4rem, 14vw, 4rem);
    }

    .activity-detail-panel,
    .activity-signup-panel,
    .result-showcase-card,
    .activity-list-card {
        border-radius: 24px;
    }

    .result-gallery-track {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .activity-list-card,
    .activity-topic-chip {
        transition: none;
    }
}