.activity-header {
  position: sticky;
  transform: none;
  left: auto;
  margin: 16px auto 0;
}

.activity-shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 36px 0 72px;
}

.activity-hero {
  min-height: 0;
  display: grid;
  align-content: end;
  gap: 14px;
  padding: 28px 0 24px;
}

.activity-hero h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(40px, 6.5vw, 72px);
  line-height: 1;
  text-wrap: balance;
}

.activity-hero p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.6;
}

.activity-app {
  display: grid;
  gap: 28px;
}

.activity-loading,
.activity-empty,
.activity-status {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--glass);
  color: var(--muted);
}

.activity-feature-card,
.activity-card,
.activity-detail,
.activity-signup,
.activity-side-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.activity-feature-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  min-height: 420px;
}

.activity-feature-card.is-no-media {
  grid-template-columns: 1fr;
  min-height: 0;
}

.activity-section {
  display: grid;
  gap: 18px;
}

.activity-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
}

.activity-section-head h2,
.activity-section-head p {
  margin: 0;
}

.activity-section-head h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
}

.activity-section-head > p {
  max-width: 520px;
  color: var(--muted);
  line-height: 1.7;
}

.activity-feature-media,
.activity-card-media,
.activity-detail-cover {
  margin: 0;
  min-width: 0;
}

.activity-feature-media img,
.activity-card-media img,
.activity-detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.activity-poster {
  display: grid;
  align-content: end;
  gap: 10px;
  min-height: 100%;
  padding: clamp(22px, 4vw, 42px);
  color: #f8f8f6;
  background:
    linear-gradient(135deg, rgba(9, 9, 9, 0.94), rgba(32, 43, 42, 0.9)),
    #101010;
}

.activity-poster span,
.activity-poster small {
  color: rgba(255, 255, 255, 0.64);
  font-size: 12px;
  font-weight: 780;
}

.activity-poster strong {
  max-width: 360px;
  font-size: 28px;
  line-height: 0.98;
}

.activity-feature-copy,
.activity-detail-body,
.activity-signup,
.activity-side-panel,
.activity-card-body {
  padding: clamp(22px, 4vw, 42px);
}

.activity-feature-copy {
  display: grid;
  align-content: center;
  gap: 18px;
}

.activity-feature-main,
.activity-feature-aside {
  display: grid;
  gap: 16px;
}

.activity-feature-card.is-no-media .activity-feature-copy {
  align-content: start;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: start;
  gap: 28px;
  padding: clamp(22px, 3vw, 34px);
}

.activity-feature-card.is-no-media .button {
  justify-self: stretch;
}

.activity-kicker,
.activity-meta-line {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.activity-feature-copy h2,
.activity-detail-body h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  text-wrap: balance;
}

.activity-feature-copy p,
.activity-detail-body p,
.activity-card-body p,
.activity-side-panel p,
.activity-signup p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.activity-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.activity-tags span,
.activity-state {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  background: var(--glass-dark);
  font-size: 12px;
  font-weight: 760;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.activity-more-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--glass-dark);
}

.activity-more-bar div {
  display: grid;
  gap: 4px;
}

.activity-more-bar strong {
  color: var(--ink);
}

.activity-more-bar span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.activity-card {
  display: grid;
  grid-template-rows: 180px minmax(0, 1fr);
  height: 100%;
}

.activity-card.is-no-media {
  grid-template-rows: 1fr;
}

.activity-card > a {
  display: block;
  min-height: 0;
  overflow: hidden;
}

.activity-card-media {
  height: 100%;
  min-height: 0;
}

.activity-card-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.activity-card.is-no-media .activity-card-body {
  min-height: 260px;
  padding-top: 24px;
}

.activity-card-body .activity-meta-line {
  min-height: 18px;
}

.activity-card-body h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.22;
  min-height: calc(21px * 1.22 * 2);
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.activity-card-body > p:not(.activity-meta-line) {
  min-height: calc(1em * 1.72 * 3);
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.activity-card-body .activity-tags {
  min-height: 34px;
  max-height: 82px;
  align-content: start;
  overflow: hidden;
}

.activity-card-body .button {
  justify-content: center;
  width: 100%;
  margin-top: auto;
}

.activity-history-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.activity-history-grid .activity-card {
  grid-template-rows: clamp(220px, 18vw, 320px) minmax(0, 1fr);
}

.activity-history-grid .activity-card-body {
  min-height: 420px;
}

.activity-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  gap: 18px;
  align-items: start;
}

.activity-detail-cover {
  aspect-ratio: 16 / 8;
}

.activity-detail-body {
  display: grid;
  gap: 20px;
}

.activity-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.activity-info-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--glass-dark);
}

.activity-info-grid span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted-2);
  font-size: 12px;
  font-weight: 720;
}

.activity-info-grid strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}

.activity-signup {
  display: grid;
  gap: 16px;
}

.activity-review-panel {
  align-content: start;
}

.activity-signup h2,
.activity-side-panel h2 {
  margin: 0;
  font-size: 24px;
}

.activity-form {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 720;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  background: rgba(255, 255, 255, 0.72);
  color: #111;
  outline: none;
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.matched-box {
  border: 1px solid rgba(23, 100, 73, 0.28);
  border-radius: 8px;
  padding: 12px;
  background: rgba(23, 100, 73, 0.1);
  color: var(--ink-soft);
  line-height: 1.6;
}

.activity-agenda-list {
  display: grid;
  gap: 10px;
}

.activity-agenda-list article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px;
  background: var(--glass-dark);
}

.activity-agenda-list article > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  color: #fff;
  background: #111;
  font-size: 12px;
  font-weight: 820;
}

.activity-agenda-list h3 {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 16px;
}

.activity-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.activity-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
}

.activity-hosts {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--glass-dark);
}

.activity-host-list {
  display: grid;
  gap: 10px;
}

.activity-host-list article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
}

.activity-host-list img,
.activity-host-list i {
  width: 42px;
  height: 42px;
  border-radius: 999px;
}

.activity-host-list img {
  object-fit: cover;
}

.activity-host-list i {
  display: grid;
  place-items: center;
  color: #fff;
  font-style: normal;
  font-weight: 820;
  background: #111;
}

.activity-host-list h3,
.activity-host-list p {
  margin: 0;
}

.activity-host-list h3 {
  font-size: 15px;
}

.activity-host-list strong {
  display: block;
  margin: 2px 0 3px;
  color: var(--muted);
  font-size: 12px;
}

.activity-host-list p {
  font-size: 12px;
  line-height: 1.55;
}

.registered-members {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--glass-dark);
}

.registered-members-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.registered-members-head span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 760;
}

.registered-members-head strong {
  color: var(--ink);
  font-size: 15px;
}

.registered-member-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.registered-member-list span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 9px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 760;
}

.registered-members p {
  font-size: 13px;
}

.survey-prompt {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.survey-prompt-panel {
  display: grid;
  gap: 16px;
  width: min(100%, 480px);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(22px, 5vw, 34px);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.survey-prompt-panel h2,
.survey-prompt-panel p {
  margin: 0;
}

.survey-prompt-panel h2 {
  font-size: 28px;
  line-height: 1.15;
}

.survey-prompt-panel p {
  color: var(--muted);
  line-height: 1.7;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.inline-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.8);
  color: #111;
  cursor: pointer;
  font-weight: 780;
}

.activity-status.is-ok {
  border-color: rgba(23, 100, 73, 0.34);
  color: #176449;
}

html[data-theme="light"] .activity-loading,
html[data-theme="light"] .activity-empty,
html[data-theme="light"] .activity-status,
html[data-theme="light"] .activity-feature-card,
html[data-theme="light"] .activity-card,
html[data-theme="light"] .activity-detail,
html[data-theme="light"] .activity-signup,
html[data-theme="light"] .activity-side-panel {
  border-color: rgba(10, 10, 10, 0.08);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.07);
}

html[data-theme="light"] .activity-info-grid div,
html[data-theme="light"] .activity-more-bar,
html[data-theme="light"] .activity-agenda-list article,
html[data-theme="light"] .activity-hosts,
html[data-theme="light"] .registered-members {
  border-color: rgba(10, 10, 10, 0.08);
  background: rgba(250, 250, 249, 0.92);
}

html[data-theme="light"] .activity-tags span,
html[data-theme="light"] .activity-state,
html[data-theme="light"] .registered-member-list span {
  border-color: rgba(10, 10, 10, 0.1);
  color: rgba(10, 10, 10, 0.66);
  background: rgba(10, 10, 10, 0.045);
}

html[data-theme="light"] .activity-card .button-dark,
html[data-theme="light"] .activity-feature-aside .button-dark,
html[data-theme="light"] .activity-more-bar .button-dark {
  border-color: #0a0a0a;
  background: #0a0a0a;
  color: #fff;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.13);
}

html[data-theme="light"] .activity-card .button-dark:hover,
html[data-theme="light"] .activity-card .button-dark:focus-visible,
html[data-theme="light"] .activity-feature-aside .button-dark:hover,
html[data-theme="light"] .activity-feature-aside .button-dark:focus-visible,
html[data-theme="light"] .activity-more-bar .button-dark:hover,
html[data-theme="light"] .activity-more-bar .button-dark:focus-visible {
  background: #262626;
  border-color: #262626;
}

@media (max-width: 820px) {
  .activity-feature-card,
  .activity-detail-grid,
  .activity-section-head {
    grid-template-columns: 1fr;
  }

  .activity-feature-card.is-no-media .activity-feature-copy {
    grid-template-columns: 1fr;
  }

  .activity-section-head {
    display: grid;
  }

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

  .activity-history-grid .activity-card {
    grid-template-rows: 190px minmax(0, 1fr);
  }

  .activity-history-grid .activity-card-body {
    min-height: 0;
  }

  .activity-more-bar {
    display: grid;
  }

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

  .activity-feature-card {
    min-height: 0;
  }

  .activity-feature-media {
    min-height: 260px;
  }
}