:root {
  --forum-ink: #f5f8ff;
  --forum-soft: #b8c8e8;
  --forum-dim: #8194bd;
  --forum-line: rgba(144, 191, 255, 0.2);
  --forum-panel: rgba(9, 19, 38, 0.76);
  --forum-panel-strong: rgba(13, 28, 54, 0.92);
  --forum-cyan: #6fe7ff;
  --forum-red: #ff5c7a;
  --forum-green: #35e6b7;
}

html {
  background: #06101f;
}

.forum-body {
  min-width: 0;
  color: var(--forum-ink);
  font-family: "Source Han Sans SC", "思源黑体", "Noto Sans CJK SC", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  background:
    linear-gradient(180deg, rgba(6, 16, 31, 0.94), rgba(7, 17, 34, 0.98)),
    url("./assets/hero.png") center top / 1500px auto no-repeat,
    #06101f;
}

.forum-body * {
  font-family: "Source Han Sans SC", "思源黑体", "Noto Sans CJK SC", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-weight: 400;
}

.forum-body button,
.forum-body input,
.forum-body textarea,
.forum-body select {
  font: inherit;
}

.forum-page {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: 104px 0 36px;
  background:
    radial-gradient(760px 520px at 10% 8%, rgba(111, 231, 255, 0.15), transparent 62%),
    radial-gradient(760px 520px at 92% 14%, rgba(255, 92, 122, 0.11), transparent 60%),
    linear-gradient(180deg, rgba(6, 16, 31, 0.78), #06101f 48%, #071326 100%);
}

.forum-nav.nav-glass {
  width: calc(100vw - 128px);
  min-width: 1354px;
  max-width: 1760px;
}

.forum-body .brand,
.forum-body .brand-cn,
.forum-body .nav-cta {
  font-weight: 500;
}

.forum-body .nav-links a {
  font-size: 18px;
  font-weight: 450;
}

.forum-nav-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  text-align: center;
}

.forum-nav-action span {
  display: block;
  width: 100%;
  text-align: center;
}

.forum-nav-action svg {
  position: absolute;
  left: 18px;
}

.forum-nav-action svg,
.compose-shortcut svg,
.primary-forum-btn svg,
.ghost-forum-btn svg,
.forum-search svg,
.topic-stat svg,
.detail-back svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.forum-shell {
  width: min(calc(100vw - 48px), 1280px);
  margin: 0 auto;
}

.forum-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
  gap: 24px;
  min-height: 140px;
  padding: 18px 0 16px;
}

.forum-kicker {
  margin: 0 0 10px;
  color: var(--forum-cyan);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
}

.forum-hero h1 {
  margin: 0;
  font-size: clamp(32px, 3.7vw, 46px);
  line-height: 1.05;
  letter-spacing: 0;
  font-weight: 500;
}

.forum-hero p {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--forum-soft);
  font-size: 14px;
  line-height: 1.6;
}

.side-panel,
.forum-composer,
.topic-detail,
.topic-card,
.forum-toolbar {
  border: 1px solid var(--forum-line);
  background:
    linear-gradient(180deg, rgba(24, 48, 88, 0.82), rgba(9, 19, 38, 0.82)),
    var(--forum-panel);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(22px);
}

.forum-session-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 0 12px;
  padding: 12px 14px;
  border: 1px solid var(--forum-line);
  border-radius: 8px;
  background: rgba(9, 19, 38, 0.68);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(20px);
}

.forum-session-main {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
}

.forum-session-main .forum-kicker {
  margin-bottom: 4px;
}

.forum-session-main strong,
.composer-identity strong,
.floor-user-name {
  display: block;
  color: var(--forum-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.35;
}

.forum-session-main span,
.composer-identity span,
.floor-user small {
  color: var(--forum-soft);
  line-height: 1.55;
}

.forum-session-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.forum-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  overflow: hidden;
  border: 1px solid rgba(111, 231, 255, 0.28);
  border-radius: 50%;
  color: #06101f;
  font-size: 13px;
  font-weight: 500;
  background: linear-gradient(135deg, var(--forum-cyan), #9fb7ff);
}

img.forum-avatar {
  object-fit: cover;
  background: rgba(8, 18, 37, 0.75);
}

.forum-avatar > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.forum-logged-in {
  display: none;
}

.forum-authed .forum-logged-in {
  display: inline-flex;
}

.forum-authed .forum-logged-out {
  display: none;
}

.forum-toolbar {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.7fr);
  gap: 12px;
  align-items: center;
  padding: 10px;
  border-radius: 8px;
}

.forum-search {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 38px;
  padding: 0 13px;
  border: 1px solid rgba(148, 203, 255, 0.22);
  border-radius: 8px;
  color: var(--forum-soft);
  background: rgba(5, 13, 28, 0.58);
}

.forum-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--forum-ink);
  background: transparent;
}

.forum-search input::placeholder,
.composer-form input::placeholder,
.composer-form textarea::placeholder {
  color: rgba(184, 200, 232, 0.58);
}

.forum-categories,
.side-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-pill,
.side-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid rgba(147, 190, 255, 0.2);
  border-radius: 999px;
  color: var(--forum-soft);
  background: rgba(8, 18, 37, 0.58);
  line-height: 1.2;
  text-align: center;
}

.category-pill {
  cursor: pointer;
  min-width: 74px;
  position: relative;
  padding-right: 22px;
  padding-left: 22px;
}

.category-pill::before,
.side-tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent, var(--forum-cyan));
}

.category-pill::before {
  position: absolute;
  left: 12px;
}

.category-pill.is-active {
  color: #06101f;
  border-color: transparent;
  background: linear-gradient(135deg, var(--forum-cyan), #9fb7ff);
}

.forum-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 16px;
  margin-top: 14px;
  align-items: start;
}

.topic-list-head,
.composer-head,
.detail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
}

.topic-list-head h2,
.composer-head h2,
.detail-head h2,
.side-panel h2 {
  margin: 0;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: 0;
  font-weight: 500;
}

.compose-shortcut,
.primary-forum-btn,
.ghost-forum-btn,
.detail-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(147, 190, 255, 0.24);
  color: var(--forum-ink);
  background: rgba(10, 24, 48, 0.72);
}

.compose-shortcut:hover,
.ghost-forum-btn:hover,
.detail-back:hover {
  border-color: rgba(111, 231, 255, 0.58);
}

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

.topic-list-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 14px;
}

.topic-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.topic-card:hover,
.topic-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(111, 231, 255, 0.5);
  background:
    linear-gradient(180deg, rgba(29, 58, 102, 0.9), rgba(9, 19, 38, 0.88)),
    var(--forum-panel-strong);
}

.topic-card:focus-visible {
  outline: 2px solid rgba(111, 231, 255, 0.72);
  outline-offset: 3px;
}

.topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
  color: var(--forum-dim);
  font-size: 13px;
  line-height: 1.4;
}

.topic-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--forum-ink);
  font-weight: 500;
}

.topic-category::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent, var(--forum-cyan));
}

.topic-card h3 {
  margin: 0;
  color: var(--forum-ink);
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: 0;
  font-weight: 500;
}

.topic-card p {
  margin: 8px 0 0;
  color: var(--forum-soft);
  display: -webkit-box;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.65;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}

.topic-tags span {
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--forum-soft);
  font-size: 13px;
  line-height: 1.25;
  background: rgba(111, 231, 255, 0.1);
}

.topic-stats {
  display: grid;
  grid-auto-flow: column;
  gap: 6px;
  align-self: start;
}

.topic-stat {
  display: grid;
  justify-items: center;
  gap: 4px;
  min-width: 42px;
  padding: 6px;
  border-radius: 8px;
  color: var(--forum-soft);
  background: rgba(5, 13, 28, 0.42);
}

.topic-stat strong {
  color: var(--forum-ink);
  font-size: 13px;
  font-weight: 500;
}

.forum-sidebar {
  display: grid;
  gap: 12px;
  position: sticky;
  top: 118px;
}

.side-panel {
  padding: 15px;
  border-radius: 8px;
}

.side-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.side-stats div {
  padding: 9px;
  border-radius: 8px;
  background: rgba(4, 12, 26, 0.44);
}

.side-stats strong {
  display: block;
  font-size: 20px;
  font-weight: 500;
}

.side-stats span {
  color: var(--forum-soft);
}

.topic-detail,
.forum-composer {
  margin-top: 18px;
  padding: 18px;
  border-radius: 8px;
}

.topic-detail.is-hidden {
  display: none;
}

.detail-topic-body,
.reply-body {
  color: var(--forum-soft);
  font-size: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
}

.detail-replies {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.reply-item {
  padding: 12px;
  border: 1px solid rgba(147, 190, 255, 0.16);
  border-radius: 8px;
  background: rgba(5, 13, 28, 0.38);
}

.reply-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--forum-dim);
  font-size: 12px;
}

.reply-meta strong {
  color: var(--forum-ink);
  font-weight: 500;
}

.reply-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.composer-head span {
  color: var(--forum-soft);
}

.composer-form {
  display: grid;
  gap: 13px;
}

.composer-identity {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 9px 11px;
  border: 1px solid rgba(147, 190, 255, 0.16);
  border-radius: 8px;
  background: rgba(4, 12, 26, 0.34);
}

.composer-identity > div {
  min-width: 0;
  flex: 1;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 13px;
}

.composer-form label,
.reply-form label {
  display: grid;
  gap: 8px;
  color: var(--forum-soft);
  font-weight: 400;
}

.composer-form input,
.composer-form textarea,
.composer-form select,
.reply-form input,
.reply-form textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(147, 190, 255, 0.2);
  border-radius: 8px;
  outline: 0;
  color: var(--forum-ink);
  background: rgba(4, 12, 26, 0.62);
}

.composer-form input,
.composer-form select,
.reply-form input {
  height: 40px;
  padding: 0 12px;
}

.composer-form textarea,
.reply-form textarea {
  resize: vertical;
  padding: 12px;
  line-height: 1.6;
}

.composer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.composer-actions span {
  color: var(--forum-dim);
}

.primary-forum-btn {
  border: 0;
  color: #ffffff;
  font-weight: 500;
  background: linear-gradient(135deg, var(--forum-red), var(--forum-cyan));
}

.primary-forum-btn span,
.primary-forum-btn svg {
  color: #ffffff;
  stroke: #ffffff;
}

.ghost-forum-btn {
  min-width: auto;
  color: var(--forum-ink);
}

.forum-body .forum-logged-in {
  display: none;
}

.forum-body.forum-authed .forum-logged-in {
  display: inline-flex;
}

.forum-body.forum-authed .forum-logged-out {
  display: none;
}

.primary-forum-btn:disabled {
  cursor: progress;
  opacity: 0.6;
  color: rgba(255, 255, 255, 0.78);
}

.empty-state {
  padding: 24px;
  border: 1px dashed rgba(147, 190, 255, 0.25);
  border-radius: 8px;
  color: var(--forum-soft);
  text-align: center;
  background: rgba(5, 13, 28, 0.36);
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.forum-topic-hero {
  min-height: 118px;
}

.forum-topic-return {
  margin: 14px 0 12px;
}

.forum-topic-return > span {
  color: var(--forum-soft);
}

.floor-thread {
  display: grid;
  gap: 12px;
}

.floor-card {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--forum-line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(24, 48, 88, 0.76), rgba(9, 19, 38, 0.82)),
    var(--forum-panel);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}

.floor-owner {
  border-color: color-mix(in srgb, var(--accent, var(--forum-cyan)) 46%, rgba(147, 190, 255, 0.2));
}

.floor-user {
  display: grid;
  align-content: start;
  justify-items: center;
  gap: 7px;
  padding: 8px;
  border-radius: 8px;
  text-align: center;
  background: rgba(4, 12, 26, 0.34);
}

.floor-user .forum-avatar {
  width: 38px;
  height: 38px;
  flex-basis: 38px;
  font-size: 14px;
}

.floor-user .floor-user-name {
  font-size: 14px;
  line-height: 1.4;
}

.floor-user small {
  font-size: 12.5px;
  line-height: 1.45;
}

.floor-content {
  min-width: 0;
}

.floor-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 8px;
  color: var(--forum-dim);
  font-size: 13px;
  line-height: 1.45;
}

.floor-index {
  color: var(--forum-cyan);
  font-size: 14px;
}

.floor-content h2 {
  margin: 0 0 12px;
  color: var(--forum-ink);
  font-size: clamp(23px, 2.2vw, 32px);
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: 0;
}

.floor-body {
  color: var(--forum-soft);
  font-size: 15px;
  line-height: 1.8;
}

.floor-tags {
  margin-top: 14px;
}

.floor-reply-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-top: 8px;
}

.floor-reply-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 500;
}

.reply-composer {
  margin-top: 18px;
}

.forum-auth-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: 24px;
}

.forum-auth-modal.is-hidden {
  display: none;
}

.forum-auth-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(2, 8, 20, 0.72);
  backdrop-filter: blur(12px);
}

.forum-auth-card {
  position: relative;
  z-index: 1;
  width: min(420px, calc(100vw - 32px));
  padding: 18px;
  border: 1px solid var(--forum-line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(24, 48, 88, 0.94), rgba(9, 19, 38, 0.96)),
    var(--forum-panel-strong);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

.forum-auth-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.forum-auth-head h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0;
}

.forum-auth-close {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(147, 190, 255, 0.22);
  border-radius: 50%;
  color: var(--forum-ink);
  background: rgba(4, 12, 26, 0.42);
}

.forum-auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 14px;
}

.forum-auth-tabs button {
  min-height: 36px;
  border: 1px solid rgba(147, 190, 255, 0.22);
  border-radius: 8px;
  color: var(--forum-soft);
  background: rgba(4, 12, 26, 0.42);
}

.forum-auth-tabs button.is-active {
  color: #06101f;
  background: linear-gradient(135deg, var(--forum-cyan), #9fb7ff);
}

.forum-auth-form {
  display: grid;
  gap: 12px;
}

.forum-auth-form label {
  display: grid;
  gap: 8px;
  color: var(--forum-soft);
}

.forum-auth-form input {
  height: 42px;
  border: 1px solid rgba(147, 190, 255, 0.2);
  border-radius: 8px;
  padding: 0 12px;
  outline: 0;
  color: var(--forum-ink);
  background: rgba(4, 12, 26, 0.62);
}

.forum-auth-message {
  min-height: 20px;
  margin: 0;
  color: var(--forum-red);
  line-height: 1.5;
}

.toast {
  z-index: 90;
}

.forum-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 34px;
  color: var(--forum-dim);
}

.forum-footer a {
  color: var(--forum-soft);
}

@media (max-width: 1120px) {
  .forum-nav.nav-glass {
    position: sticky;
    top: 12px;
    left: auto;
    width: min(calc(100vw - 24px), 960px);
    margin: 0 auto;
    transform: none;
  }

  .forum-nav .brand {
    flex-basis: auto;
    width: auto;
  }

  .forum-nav .nav-links {
    display: none;
  }

  .forum-page {
    padding-top: 22px;
  }

  .forum-shell {
    width: min(calc(100vw - 24px), 900px);
  }

  .forum-hero,
  .forum-toolbar,
  .forum-layout {
    grid-template-columns: 1fr;
  }

  .forum-sidebar {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .forum-body {
    background-size: 1100px auto;
  }

  .forum-nav.nav-glass {
    position: fixed;
    left: 10px;
    right: 10px;
    top: 12px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    width: auto;
    min-width: 0;
    height: 100px;
    margin: 0;
    padding: 8px 10px 10px;
    gap: 4px;
    border-radius: 28px;
    transform: none;
  }

  .forum-nav .brand {
    flex: 0 0 auto;
    justify-content: center;
    width: 100%;
    height: 34px;
    gap: 7px;
    padding: 0;
  }

  .forum-nav .brand img {
    width: 28px;
    height: 28px;
  }

  .forum-nav .brand span:not(.brand-cn) {
    max-width: 84px;
    overflow: hidden;
    color: #f7fbff;
    font-size: 17px;
    font-weight: 600;
    line-height: 28px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .forum-nav .brand-cn {
    display: inline;
    color: #ff4f68;
    font-size: 15px;
    font-weight: 600;
    line-height: 28px;
  }

  .forum-nav .nav-links {
    position: static;
    display: flex;
    flex: 0 0 auto;
    width: 100%;
    height: 40px;
    gap: 0;
    justify-content: space-between;
    overflow: hidden;
    transform: none;
  }

  .forum-nav .nav-links a {
    flex: 1 1 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    height: 100%;
    color: #dbeaff;
    font-size: 12.5px;
    font-weight: 500;
    line-height: 1;
    white-space: nowrap;
  }

  .forum-nav .nav-links a::after {
    bottom: 4px;
    height: 1.5px;
  }

  .forum-nav-action {
    display: none;
  }

  .forum-page {
    padding-top: 126px;
  }

  .forum-hero {
    min-height: 0;
    padding: 4px 0 8px;
    gap: 8px;
  }

  .forum-hero h1 {
    font-size: 32px;
    line-height: 1.12;
  }

  .forum-hero p {
    margin-top: 6px;
    font-size: 13.5px;
    line-height: 1.48;
  }

  .forum-session-strip {
    display: grid;
    gap: 8px;
    margin-bottom: 8px;
    padding: 10px 12px;
  }

  .forum-session-main .forum-kicker {
    display: none;
  }

  .forum-session-main p:not(.forum-kicker) {
    display: -webkit-box;
    overflow: hidden;
    margin-top: 2px;
    font-size: 13.5px;
    line-height: 1.45;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .forum-session-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    width: 100%;
  }

  .forum-session-actions > * {
    min-height: 38px;
  }

  .forum-toolbar {
    gap: 8px;
    padding: 8px;
  }

  .forum-categories {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
  }

  .forum-categories::-webkit-scrollbar {
    display: none;
  }

  .category-pill {
    flex: 0 0 auto;
    min-width: auto;
    min-height: 30px;
    padding-right: 14px;
    padding-left: 26px;
    font-size: 13px;
  }

  .topic-card,
  .form-row,
  .floor-card {
    grid-template-columns: 1fr;
  }

  .forum-session-strip,
  .composer-identity,
  .floor-reply-head {
    align-items: stretch;
    flex-direction: column;
  }

  .forum-session-actions {
    justify-content: stretch;
  }

  .composer-identity .ghost-forum-btn {
    width: 100%;
  }

  .floor-user {
    justify-items: start;
    grid-template-columns: auto minmax(0, 1fr);
    text-align: left;
  }

  .floor-user .forum-avatar {
    grid-row: span 3;
    width: 34px;
    height: 34px;
    flex-basis: 34px;
    font-size: 13px;
  }

  .topic-stats {
    grid-auto-flow: row;
    grid-template-columns: 1fr 1fr;
  }

  .topic-card {
    gap: 8px;
    padding: 10px 12px;
  }

  .topic-card p {
    margin-top: 6px;
    line-height: 1.5;
    -webkit-line-clamp: 1;
  }

  .topic-tags {
    margin-top: 7px;
  }

  .forum-sidebar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .side-panel {
    padding: 12px;
  }

  .side-panel h2 {
    font-size: 17px;
  }

  .side-tags {
    gap: 6px;
    max-height: 74px;
    overflow: hidden;
  }

  .side-tag {
    min-height: 28px;
    padding: 0 9px;
    font-size: 12.5px;
  }

  .composer-actions,
  .topic-list-head,
  .composer-head,
  .detail-head {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-forum-btn,
  .compose-shortcut,
  .detail-back {
    width: 100%;
  }
}