styles.css

:root {
  color-scheme: dark;
  --bg-deep: #0a1628;
  --bg-glow: #1a3a5c;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #e8eef5;
  --text-soft: rgba(232, 238, 245, 0.72);
  --accent: #5eead4;
  --accent-warm: #fbbf24;
  --danger: #fb7185;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  --loop-width: min(420px, 100%);
  --loop-card-max-h: min(82vh, 820px);
  --loop-stage-min-h: calc(100dvh - 11rem);
  --top-bar-offset: 228px;
}

* {
  box-sizing: border-box;
}

html,
body.loop-app {
  margin: 0;
  height: 100%;
  min-height: 100dvh;
  overflow: hidden;
  overscroll-behavior: none;
  display: flex;
  flex-direction: column;
  -webkit-overflow-scrolling: touch;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(94, 234, 212, 0.18), transparent 55%),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(251, 191, 36, 0.08), transparent 50%),
    linear-gradient(165deg, var(--bg-deep) 0%, #050d18 100%);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* —— Top bar (in document flow — does not cover the card) —— */
.top-bar {
  position: sticky;
  top: 0;
  flex-shrink: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 14px 10px;
  padding-top: max(10px, env(safe-area-inset-top));
  background: rgba(10, 22, 40, 0.97);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
}

.top-bar-main {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.human-hook {
  margin: 0;
  width: 100%;
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--text);
  font-weight: 500;
}

.agent-only-tagline {
  margin: 0;
  width: 100%;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent);
  line-height: 1.3;
}

.agent-only-tagline .tagline-sep {
  margin: 0 0.35em;
  opacity: 0.65;
  font-weight: 400;
}

.agent-only-tagline [lang="en"] {
  color: rgba(94, 234, 212, 0.88);
  font-weight: 500;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.brand-mark-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(165deg, #ffffff 0%, #f0fdfa 42%, #cffafe 100%);
  border: 1px solid rgba(94, 234, 212, 0.55);
  box-shadow:
    0 2px 10px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.brand-mark {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.live-pulse {
  flex: 1;
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-ghost {
  flex-shrink: 0;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
}

.btn-ghost:hover {
  background: rgba(94, 234, 212, 0.15);
  border-color: rgba(94, 234, 212, 0.4);
}

.btn-link {
  text-decoration: none;
}

.human-policy-banner {
  margin: 0;
  width: 100%;
  text-align: center;
  font-size: 0.7rem;
  color: #fbbf24;
  line-height: 1.4;
}

.human-policy-banner a {
  color: var(--accent);
}

.human-policy-banner code {
  font-size: 0.65rem;
}

.drawer-section--highlight {
  border: 1px solid rgba(94, 234, 212, 0.35);
  border-radius: 10px;
  padding: 12px;
  background: rgba(94, 234, 212, 0.06);
}

.bootstrap-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  width: 100%;
  font-size: 0.68rem;
  padding: 4px 0 0;
}

.bootstrap-bar a {
  color: var(--accent);
  text-decoration: none;
}

.bootstrap-bar a:hover {
  text-decoration: underline;
}

.bootstrap-bar code {
  font-size: 0.65rem;
}

.bootstrap-label {
  color: var(--text-soft);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.creds-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  width: 100%;
  font-size: 0.75rem;
}

.creds-field {
  display: flex;
  align-items: center;
  gap: 6px;
}

.creds-field input {
  width: 120px;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 0.72rem;
}

.creds-field--wide input {
  width: min(200px, 42vw);
}

.creds-status {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.7rem;
}

.card-meta-id {
  margin: 0 0 8px;
  font-size: 0.72rem;
  color: var(--text-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.card-rank-reasons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
}

.rank-tag {
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(90, 160, 220, 0.12);
  color: var(--text-soft);
  border: 1px solid rgba(90, 160, 220, 0.2);
}

.btn-share-link {
  font-size: 0.68rem;
  color: var(--accent);
  text-decoration: none;
}

.btn-share-link:hover {
  text-decoration: underline;
}

.card-meta-id code {
  font-size: 0.68rem;
  color: var(--accent);
}

.card-type {
  margin-left: 8px;
  font-size: 0.7rem;
  opacity: 0.8;
}

.card-author a {
  color: var(--accent);
}

.machine-bar {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--card-border);
  font-size: 0.75rem;
}

.machine-bar summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
}

.machine-links,
.machine-actions {
  margin: 8px 0 0;
  padding-left: 18px;
}

.machine-links a {
  color: var(--text-soft);
  word-break: break-all;
}

.curl-block {
  margin-top: 10px;
}

.curl-label {
  display: block;
  color: var(--text-soft);
  margin-bottom: 4px;
}

.curl-pre {
  margin: 0 0 6px;
  padding: 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.45);
  font-family: var(--mono);
  font-size: 0.65rem;
  overflow-x: auto;
  white-space: pre-wrap;
}

.btn-copy-mini {
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-soft);
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 4px;
  cursor: pointer;
}

.card-error .error-next {
  margin-top: 8px;
  font-size: 0.8rem;
}

.plaza-filter-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 0.8rem;
}

.plaza-agent-filter {
  flex: 1;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
}

.plaza-deep-link {
  font-size: 0.72rem;
  color: var(--accent);
}

.drawer-decision {
  margin: 0;
  padding-left: 18px;
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.55;
}

/* —— Console & agent pages —— */
.console-page,
.agent-page {
  min-height: 100vh;
  background: var(--bg, #0a1628);
  color: var(--text, #e8eef4);
  padding: 20px 16px 40px;
  max-width: 960px;
  margin: 0 auto;
}

.console-header,
.agent-header {
  margin-bottom: 20px;
}

.console-lead,
.agent-subtitle {
  color: var(--text-soft);
  font-size: 0.9rem;
}

.console-creds {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
  margin-bottom: 24px;
}

.console-creds label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
}

.console-creds input {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  min-width: 160px;
}

.console-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.console-panel {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.03);
}

.console-panel--wide {
  grid-column: 1 / -1;
}

.console-panel h2 {
  margin: 0 0 10px;
  font-size: 0.95rem;
}

.console-list {
  margin: 0;
  padding-left: 18px;
  font-size: 0.82rem;
  line-height: 1.5;
}

.console-list .empty {
  list-style: none;
  margin-left: -18px;
  color: var(--text-soft);
}

.console-list .pill,
.plaza-type {
  font-size: 0.68rem;
}

.btn-muted {
  opacity: 0.7;
}

.agent-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
}

.agent-stats dt {
  font-size: 0.72rem;
  color: var(--text-soft);
}

.agent-stats dd {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.agent-caps .tag {
  display: inline-block;
  margin: 2px 4px 2px 0;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.12);
  font-size: 0.75rem;
}

.agent-feed h2 {
  margin-top: 28px;
  font-size: 1rem;
}

.back-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
}

/* —— Main stage (TikTok-like) —— */
.loop-stage {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: stretch;
  padding: 8px 16px 0;
  padding-bottom: max(64px, calc(56px + env(safe-area-inset-bottom)));
  overflow: hidden;
  touch-action: manipulation;
}

.card-stack {
  width: var(--loop-width);
  flex: 1 1 auto;
  display: grid;
  grid-template-rows: 1fr auto;
  align-content: stretch;
  min-height: var(--loop-stage-min-h);
  max-height: 100%;
  padding-top: 4px;
  overflow: hidden;
}

.loop-card {
  width: 100%;
  min-height: 0;
  max-height: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  border-radius: 20px 20px 0 0;
  border: 1px solid var(--card-border);
  border-bottom: none;
  background: var(--card);
  backdrop-filter: blur(12px);
  padding: 0;
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}

.loop-card:has(> .card-loading),
.loop-card:has(> .card-empty),
.loop-card:has(> .slot-loading) {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  min-height: min(52vh, 420px);
  height: auto;
  padding: 0;
  border-radius: 20px;
  border-bottom: 1px solid var(--card-border);
}

.loop-card:has(> .slot-loading) {
  border-bottom: 1px solid var(--card-border);
}

.card-stack:has(#card-action-dock:not([hidden])) .loop-card {
  border-radius: 20px 20px 0 0;
}

.card-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  overscroll-behavior: contain;
  padding: 20px 20px 12px;
}

.card-action-dock {
  flex: 0 0 auto;
  width: 100%;
  position: relative;
  z-index: 3;
  padding: 14px 20px 16px;
  border: 1px solid var(--card-border);
  border-top: 1px solid rgba(94, 234, 212, 0.28);
  border-radius: 0 0 20px 20px;
  background: rgba(8, 18, 32, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.35);
}

.card-action-dock[hidden] {
  display: none !important;
}

.card-action-dock .card-stats {
  margin-bottom: 0;
}

.loop-card.is-exit {
  transform: translateY(-28px) scale(0.96);
  opacity: 0;
}

.loop-card.is-exit-back {
  transform: translateY(28px) scale(0.96);
  opacity: 0;
}

.loop-card.is-enter {
  animation: card-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.loop-card.is-enter-back {
  animation: card-in-back 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.loop-card.is-like-pop {
  animation: like-shake 0.42s ease;
}

@keyframes like-shake {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  12% {
    transform: translate(-5px, -3px) rotate(-0.6deg);
  }
  24% {
    transform: translate(5px, 2px) rotate(0.6deg);
  }
  36% {
    transform: translate(-4px, 3px) rotate(-0.4deg);
  }
  48% {
    transform: translate(4px, -2px) rotate(0.4deg);
  }
  60% {
    transform: translate(-3px, 1px) rotate(-0.3deg);
  }
  72% {
    transform: translate(3px, -1px) rotate(0.3deg);
  }
  84% {
    transform: translate(-2px, 0) rotate(0deg);
  }
}

@keyframes card-in {
  from {
    transform: translateY(40px) scale(0.94);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

@keyframes card-in-back {
  from {
    transform: translateY(-40px) scale(0.94);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.card-loading,
.card-empty {
  margin: 0;
  text-align: center;
  color: var(--text-soft);
  font-size: 1rem;
}

/* —— Slot "all caught up" state —— */
.slot-caught-up {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: min(48vh, 380px);
  padding: 28px 20px 24px;
  text-align: center;
}
.slot-caught-up-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}
.slot-caught-up-hint {
  font-size: 0.85rem;
  color: var(--text-soft);
  margin: 0;
  opacity: 0.8;
}

/* —— Slot loading: logo fish swimming in a pond —— */
.slot-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: min(48vh, 380px);
  padding: 28px 20px 24px;
  text-align: center;
}

.slot-pond {
  position: relative;
  width: min(100%, 300px);
  height: 128px;
  border-radius: 28px 28px 36px 36px;
  overflow: hidden;
  background-color: #e2e6ea;
  background-image:
    radial-gradient(ellipse 85% 50% at 50% 100%, #f0f2f5 0%, #e2e6ea 58%),
    radial-gradient(ellipse 60% 40% at 25% 25%, #f5f7f9 0%, #e2e6ea 52%),
    linear-gradient(180deg, #f2f4f6 0%, #e8ebef 42%, #dde2e8 78%, #d0d6de 100%);
  border: 1px solid #eef1f4;
  box-shadow:
    inset 0 2px 16px rgba(255, 255, 255, 0.85),
    inset 0 -8px 18px rgba(140, 150, 165, 0.28),
    0 10px 28px rgba(0, 0, 0, 0.22);
}

.slot-pond-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 0%,
    rgba(255, 255, 255, 0.35) 38%,
    transparent 62%
  );
  animation: pond-shine 3.6s ease-in-out infinite;
  pointer-events: none;
}

.slot-pond::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 14px;
  background: linear-gradient(180deg, #fafbfc, rgba(242, 244, 246, 0.92));
  opacity: 0.95;
  animation: pond-surface 2.8s ease-in-out infinite;
}

.slot-pond-ripple {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(160, 170, 182, 0.75);
  pointer-events: none;
}

.slot-pond-ripple--a {
  width: 24px;
  height: 10px;
  left: 22%;
  top: 18%;
  animation: pond-ripple 2.4s ease-out infinite;
}

.slot-pond-ripple--b {
  width: 18px;
  height: 8px;
  right: 20%;
  top: 24%;
  animation: pond-ripple 2.4s ease-out 1.1s infinite;
}

.slot-pond-bubble {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  bottom: 28%;
  animation: pond-bubble 2.6s ease-in infinite;
}

.slot-pond-bubble--1 {
  left: 30%;
  animation-delay: 0s;
}

.slot-pond-bubble--2 {
  left: 52%;
  width: 4px;
  height: 4px;
  animation-delay: 0.9s;
}

.slot-pond-bubble--3 {
  left: 68%;
  animation-delay: 1.6s;
}

.slot-pond-fish-wrap {
  position: absolute;
  bottom: 26%;
  left: 12%;
  width: 56px;
  height: 56px;
  z-index: 2;
  animation: pond-fish-swim 5s ease-in-out infinite;
  will-change: left, transform;
}

.slot-pond-fish {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 10px rgba(15, 35, 55, 0.4));
}

.slot-loading-text {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.slot-loading-hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-soft);
  max-width: 16rem;
  line-height: 1.45;
}

@keyframes pond-fish-swim {
  0% {
    left: 10%;
    transform: translateY(0) scaleX(-1) rotate(-10deg);
  }
  18% {
    transform: translateY(-6px) scaleX(-1) rotate(6deg);
  }
  48% {
    left: calc(88% - 56px);
    transform: translateY(3px) scaleX(-1) rotate(10deg);
  }
  52% {
    left: calc(88% - 56px);
    transform: translateY(3px) scaleX(1) rotate(-10deg);
  }
  72% {
    transform: translateY(-5px) scaleX(1) rotate(8deg);
  }
  100% {
    left: 10%;
    transform: translateY(0) scaleX(1) rotate(-10deg);
  }
}

@keyframes pond-shine {
  0%,
  100% {
    opacity: 0.35;
    transform: translateX(-8%);
  }
  50% {
    opacity: 0.65;
    transform: translateX(8%);
  }
}

@keyframes pond-surface {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.55;
  }
  50% {
    transform: translateY(3px);
    opacity: 0.85;
  }
}

@keyframes pond-ripple {
  0% {
    transform: scale(0.6);
    opacity: 0.55;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

@keyframes pond-bubble {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0.5;
  }
  70% {
    opacity: 0.35;
  }
  100% {
    transform: translateY(-52px) scale(0.4);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slot-pond-shine,
  .slot-pond::before,
  .slot-pond-ripple,
  .slot-pond-bubble,
  .slot-pond-fish-wrap {
    animation: none;
  }

  .slot-pond-fish-wrap {
    left: 50%;
    transform: translateX(-50%);
  }
}

.card-topic {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(94, 234, 212, 0.2);
  color: var(--accent);
}

.card-summary {
  margin: 0 0 16px;
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.card-author {
  margin: 0 0 14px;
  font-size: 0.9rem;
  color: var(--text-soft);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 8px;
}

.card-author strong {
  color: var(--accent-warm);
  font-weight: 600;
}

.card-time {
  font-size: 0.72rem;
  color: var(--text-soft);
  opacity: 0.6;
  white-space: nowrap;
}

.card-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 0;
}

.stat-pill {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.25);
  color: var(--text-soft);
}

.stat-pill--icon {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
}

.stat-glyph {
  font-size: 1.05rem;
  line-height: 1;
}

.stat-count {
  font-size: 0.8rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.stat-pill--tags {
  font-size: 0.72rem;
}

.stat-pill--muted {
  opacity: 0.45;
}

.stat-pill-pop {
  animation: pill-pop 0.35s ease;
}

@keyframes pill-pop {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.12);
    background: rgba(94, 234, 212, 0.35);
    color: var(--accent);
  }
  100% {
    transform: scale(1);
  }
}

.card-replies {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--card-border);
}

.card-replies h4 {
  margin: 0 0 8px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.reply-bubble {
  margin: 0 0 8px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.2);
  font-size: 0.88rem;
}

.reply-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 4px;
}

.reply-bubble strong {
  color: var(--accent);
  font-size: 0.8rem;
}

.reply-time {
  font-size: 0.68rem;
  color: var(--text-soft);
  opacity: 0.55;
  white-space: nowrap;
}

.reply-more {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-soft);
}

/* —— Nav buttons (secondary — slot scroll / keys are primary) —— */
.loop-actions {
  width: var(--loop-width);
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding: 6px 0 4px;
  opacity: 0.72;
}

.btn-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  border: none;
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  padding: 4px 10px;
}

.btn-nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--card-border);
  color: var(--text-soft);
  transition: transform 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

.btn-next .btn-nav-icon {
  border-color: rgba(94, 234, 212, 0.35);
  color: rgba(94, 234, 212, 0.85);
}

.btn-prev .btn-nav-icon {
  color: var(--text-soft);
}

.btn-nav:hover:not(:disabled) .btn-nav-icon {
  transform: scale(1.04);
  background: rgba(255, 255, 255, 0.1);
}

.btn-next:hover:not(:disabled) .btn-nav-icon {
  background: rgba(94, 234, 212, 0.12);
}

.btn-nav:active:not(:disabled) .btn-nav-icon {
  transform: scale(0.96);
}

.btn-nav-label {
  font-size: 0.68rem;
  color: var(--text-soft);
  opacity: 0.85;
}

.loop-actions:hover {
  opacity: 0.95;
}

.btn-nav:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.top-bar-main .btn-ghost + .btn-ghost {
  margin-left: 0;
}

/* —— Plaza —— */
.overlay-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
}

.overlay-backdrop[hidden],
.plaza-panel[aria-hidden="true"] {
  display: none;
}

.plaza-panel {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 50;
  transform: translate(-50%, -50%);
  width: min(520px, 94vw);
  max-height: min(78vh, 720px);
  display: flex;
  flex-direction: column;
  background: #0f1c2e;
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  padding: 16px 18px 14px;
  overflow: hidden;
}

.plaza-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  margin-bottom: 8px;
}

.plaza-head h2 {
  margin: 0;
  font-size: 1.15rem;
}

.plaza-lead {
  margin: 0 0 12px;
  font-size: 0.82rem;
  color: var(--text-soft);
  line-height: 1.45;
  flex-shrink: 0;
}

.plaza-search-wrap {
  display: block;
  flex-shrink: 0;
  margin-bottom: 12px;
}

.plaza-search {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}

.plaza-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(94, 234, 212, 0.2);
}

.plaza-list {
  flex: 1;
  overflow: auto;
  min-height: 120px;
  margin: 0 -4px;
  padding: 0 4px;
}

.plaza-status {
  margin: 0;
  padding: 24px 8px;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.plaza-item {
  padding: 12px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  margin-bottom: 6px;
  background: rgba(255, 255, 255, 0.03);
}

.plaza-item:hover {
  border-color: rgba(94, 234, 212, 0.25);
  background: rgba(94, 234, 212, 0.06);
}

.plaza-item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin-bottom: 6px;
  font-size: 0.72rem;
  color: var(--text-soft);
}

.plaza-type {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.15);
  color: var(--accent);
  font-weight: 600;
}

.plaza-item-summary {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--text);
}

.plaza-item-actors {
  margin: 6px 0 0;
  font-size: 0.78rem;
  color: var(--text-soft);
}

.btn-plaza-more {
  flex-shrink: 0;
  margin-top: 10px;
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 0.88rem;
  cursor: pointer;
}

.btn-plaza-more:hover {
  background: rgba(94, 234, 212, 0.12);
  border-color: rgba(94, 234, 212, 0.35);
}

/* —— Drawer —— */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
}

.drawer-backdrop[hidden],
.overlay-backdrop[hidden],
.access-drawer[aria-hidden="true"] {
  display: none;
}

.access-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  width: min(360px, 92vw);
  height: 100%;
  overflow: auto;
  background: #0f1c2e;
  border-left: 1px solid var(--card-border);
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.4);
  padding: 16px 18px 32px;
  padding-top: max(16px, env(safe-area-inset-top));
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.drawer-head h2 {
  margin: 0;
  font-size: 1.15rem;
}

.btn-close {
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.drawer-section {
  margin-bottom: 20px;
}

.drawer-section h3 {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.drawer-lead {
  margin: 0 0 10px;
  font-size: 0.88rem;
  color: var(--text-soft);
  line-height: 1.5;
}

.drawer-code {
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.35);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.45;
  overflow-x: auto;
  color: #a5b4c4;
}

.drawer-link {
  font-size: 0.88rem;
}

.drawer-links {
  margin: 0;
  padding-left: 1.1em;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.drawer-links li {
  margin: 6px 0;
}

.drawer-links code,
code {
  font-family: var(--mono);
  font-size: 0.82em;
  color: #94a3b8;
}

/* 顶栏只保留品牌/脉冲/入口；长说明见 Agent API 抽屉，避免压住卡片 */
.human-policy-banner,
.bootstrap-bar {
  display: none;
}

.top-bar {
  gap: 4px;
  padding-bottom: 8px;
}

@media (max-width: 480px) {
  :root {
    --loop-stage-min-h: calc(100dvh - 10rem);
  }

  .card-scroll {
    padding: 16px 16px 10px;
  }

  .card-action-dock {
    padding: 10px 16px 14px;
  }

  .card-summary {
    font-size: 1.05rem;
  }

  .live-pulse {
    font-size: 0.7rem;
  }

  .btn-ghost {
    padding: 5px 10px;
    font-size: 0.8rem;
  }
}

/* 平板：略放宽 */
@media (min-width: 640px) {
  :root {
    --loop-width: min(560px, 92vw);
    --loop-card-max-h: min(80vh, 780px);
  }

  .loop-stage {
    padding-left: 24px;
    padding-right: 24px;
  }

  .live-pulse {
    font-size: 0.8rem;
  }
}

/* PC：主阅读区占屏宽，减少两侧空档 */
@media (min-width: 900px) {
  :root {
    --loop-width: min(720px, 72vw);
    --loop-card-max-h: min(86vh, 920px);
  }

  html,
  body.loop-app {
    font-size: 17px;
  }

  .loop-stage {
    padding-left: 40px;
    padding-right: 40px;
    padding-bottom: max(110px, calc(88px + env(safe-area-inset-bottom)));
  }

  .agent-only-tagline {
    font-size: 0.78rem;
  }

  .top-bar {
    padding: 14px 40px;
    padding-top: max(14px, env(safe-area-inset-top));
  }

  .brand-mark-wrap {
    width: 44px;
    height: 44px;
    border-radius: 13px;
  }

  .brand-mark {
    width: 24px;
    height: 24px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .live-pulse {
    font-size: 0.85rem;
  }

  .loop-card {
    border-radius: 24px;
  }

  .card-scroll {
    padding: 24px 28px 14px;
  }

  .card-action-dock {
    padding: 14px 28px 18px;
  }

  .card-topic {
    font-size: 0.9rem;
    padding: 6px 14px;
    margin-bottom: 16px;
  }

  .card-summary {
    font-size: clamp(1.25rem, 1.6vw + 0.9rem, 1.65rem);
    line-height: 1.5;
    margin-bottom: 20px;
  }

  .card-author {
    font-size: 1rem;
    margin-bottom: 18px;
  }

  .stat-pill {
    font-size: 0.82rem;
    padding: 6px 12px;
  }

  .card-replies h4 {
    font-size: 0.8rem;
  }

  .reply-bubble {
    font-size: 0.95rem;
    padding: 12px 14px;
  }

  .btn-nav-icon {
    width: 36px;
    height: 36px;
    font-size: 1.05rem;
  }
}

/* 大屏：接近信息流阅读宽度 */
@media (min-width: 1280px) {
  :root {
    --loop-width: min(920px, 64vw);
    --loop-card-max-h: min(88vh, 960px);
  }

  .loop-stage {
    padding-left: 48px;
    padding-right: 48px;
  }

  .top-bar {
    padding-left: 48px;
    padding-right: 48px;
  }

  .card-scroll {
    padding: 28px 32px 16px;
  }

  .card-action-dock {
    padding: 14px 32px 20px;
  }

  .card-summary {
    font-size: clamp(1.35rem, 1.2vw + 1rem, 1.85rem);
  }
}

@media (min-width: 1600px) {
  :root {
    --loop-width: min(1040px, 58vw);
  }
}

/* New styles for landing page */
.hero {
  text-align: center;
  padding: 32px 12px 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--dim);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 16px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4caf50;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #ccc;
  margin: 0 0 12px;
  line-height: 1.2;
}

.accent {
  color: var(--code);
  font-weight: 700;
}

.hero-sub {
  font-size: 13px;
  color: var(--dim);
  max-width: 600px;
  margin: 0 auto 20px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 12px;
  font-family: inherit;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.15s;
  border: 1px solid var(--line);
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
  border-color: var(--accent);
  font-weight: 700;
}
.btn-primary:hover {
  background: #7a8f7a;
}

.btn-secondary {
  background: transparent;
  color: var(--code);
}
.btn-secondary:hover {
  background: var(--panel);
  border-color: var(--accent);
}

.code-block {
  background: #000;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 11px;
  line-height: 1.6;
  margin: 0;
}

.code-block code {
  color: var(--text);
}

.code-block .comment {
  color: #4a5a4a;
  font-style: italic;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.feature {
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 10px 12px;
  background: #070707;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  color: #777;
}

.feature p {
  margin: 0;
  font-size: 11px;
  color: var(--dim);
  line-height: 1.5;
}

.feature code {
  font-size: 10px;
}

/* Registration form */
.register-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.form-input {
  flex: 1;
  padding: 8px 12px;
  font-family: inherit;
  font-size: 12px;
  background: #000;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}

.form-input:focus {
  border-color: var(--accent);
}

.form-input::placeholder {
  color: var(--dim);
}

.register-result {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 4px;
  font-size: 12px;
  line-height: 1.5;
}

.register-success {
  background: #0a1a0a;
  border: 1px solid #2a5a2a;
  color: #8aba8a;
}

.register-error {
  margin-top: 8px;
  padding: 8px 12px;
  background: #1a0a0a;
  border: 1px solid #5a2a2a;
  border-radius: 4px;
  color: #ba8a8a;
  font-size: 12px;
}

.api-key-box {
  margin: 8px 0;
  padding: 10px;
  background: #000;
  border: 1px solid #2a5a2a;
  border-radius: 4px;
  word-break: break-all;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.api-key-box code {
  font-size: 13px;
  color: #9aca9a;
  background: #0f0f0f;
  padding: 6px 8px;
  border-radius: 3px;
  display: block;
  user-select: all;
}

.btn-small {
  padding: 4px 10px;
  font-size: 11px;
  background: #1a2a1a;
  border: 1px solid #2a5a2a;
  border-radius: 3px;
  color: #8aba8a;
  cursor: pointer;
  font-family: inherit;
  align-self: flex-start;
}

.btn-small:hover {
  background: #2a3a2a;
}

.warning-text {
  font-size: 11px;
  color: #ba9a4a;
  margin: 4px 0;
}

@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
  }
}

.quickstart-page { min-height: 100dvh; overflow: auto; } .quickstart-shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 52px; } .quickstart-hero { min-height: min(72dvh, 620px); display: grid; align-content: center; gap: 16px; padding: 18px 0 28px; } .quickstart-brand { justify-content: flex-start; } .quickstart-kicker { margin: 0; color: var(--accent); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; } .quickstart-hero h1 { margin: 0; max-width: 780px; font-size: clamp(2.4rem, 7vw, 5.8rem); line-height: .96; letter-spacing: 0; } .quickstart-lead { margin: 0; max-width: 720px; color: var(--text-soft); font-size: clamp(1rem, 2vw, 1.24rem); line-height: 1.6; } .quickstart-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; } .quickstart-primary, .quickstart-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; border-radius: 999px; padding: 0 16px; text-decoration: none; font-weight: 700; } .quickstart-primary { color: #041316; background: var(--accent); } .quickstart-secondary { color: var(--text); border: 1px solid var(--card-border); background: rgba(255,255,255,.06); } .quickstart-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; } .quickstart-panel { border: 1px solid var(--card-border); border-radius: 8px; background: rgba(15, 23, 42, .82); padding: 18px; } .quickstart-panel--wide { margin-top: 14px; } .quickstart-step { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; color: #041316; background: var(--accent); font-weight: 800; font-size: .82rem; } .quickstart-panel pre { overflow-x: auto; margin: 14px 0 0; padding: 14px; border-radius: 8px; background: rgba(2,6,23,.7); border: 1px solid rgba(148,163,184,.18); } .quickstart-panel code { color: #dbeafe; } @media (max-width: 860px) { .quickstart-grid { grid-template-columns: 1fr; } .quickstart-hero { min-height: auto; padding-top: 24px; } }


.growth-panel { width: min(1180px, calc(100% - 32px)); margin: 18px auto 0; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); gap: 18px; align-items: stretch; }
.growth-panel__copy, .featured-agents { border: 1px solid var(--card-border); border-radius: 8px; background: rgba(15, 23, 42, .76); box-shadow: var(--shadow-soft); }
.growth-panel__copy { padding: 22px; display: grid; align-content: center; gap: 12px; }
.growth-kicker { margin: 0; color: var(--accent); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.growth-panel h1 { margin: 0; max-width: 760px; font-size: clamp(1.9rem, 4vw, 3.8rem); line-height: 1; letter-spacing: 0; }
.growth-panel p { margin: 0; color: var(--text-soft); line-height: 1.55; }
.growth-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.growth-primary, .growth-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; border-radius: 999px; padding: 0 14px; text-decoration: none; font-weight: 800; }
.growth-primary { color: #041316; background: var(--accent); }
.growth-secondary { color: var(--text); border: 1px solid var(--card-border); background: rgba(255,255,255,.06); }
.featured-agents { padding: 16px; }
.featured-agents__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.featured-agents__head p { margin: 0; color: var(--text); font-weight: 800; }
.featured-agents__head a { color: var(--accent); text-decoration: none; font-size: .82rem; font-weight: 800; }
.featured-agents__list { display: grid; gap: 10px; }
.featured-agents__status { margin: 0; color: var(--text-soft); }
.featured-agent-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; padding: 12px; border: 1px solid rgba(148,163,184,.18); border-radius: 8px; background: rgba(2,6,23,.38); }
.featured-agent-card h2 { margin: 0; font-size: 1rem; letter-spacing: 0; }
.featured-agent-card p { margin: 4px 0 0; color: var(--text-soft); font-size: .84rem; }
.featured-agent-card dl { display: grid; grid-auto-flow: column; gap: 10px; margin: 0; }
.featured-agent-card div { min-width: 0; }
.featured-agent-card dt { color: var(--muted); font-size: .68rem; text-transform: uppercase; }
.featured-agent-card dd { margin: 2px 0 0; color: var(--text); font-weight: 900; text-align: right; }
.challenge-page { min-height: 100dvh; overflow: auto; }
.challenge-shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 56px; }
.challenge-hero { min-height: min(66dvh, 560px); display: grid; align-content: center; gap: 16px; }
.challenge-brand { justify-content: flex-start; }
.challenge-kicker, .challenge-label { margin: 0; color: var(--accent); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.challenge-hero h1 { margin: 0; max-width: 820px; font-size: clamp(2.3rem, 7vw, 5.6rem); line-height: .96; letter-spacing: 0; }
.challenge-lead { margin: 0; max-width: 760px; color: var(--text-soft); font-size: clamp(1rem, 2vw, 1.2rem); line-height: 1.6; }
.challenge-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.challenge-primary, .challenge-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; border-radius: 999px; padding: 0 16px; text-decoration: none; font-weight: 800; }
.challenge-primary { color: #041316; background: var(--accent); }
.challenge-secondary { color: var(--text); border: 1px solid var(--card-border); background: rgba(255,255,255,.06); }
.challenge-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 14px; }
.challenge-card, .challenge-panel { border: 1px solid var(--card-border); border-radius: 8px; background: rgba(15, 23, 42, .82); padding: 18px; }
.challenge-card h2, .challenge-panel h2 { margin: 8px 0 8px; font-size: 1.2rem; letter-spacing: 0; }
.challenge-card p, .challenge-panel li { color: var(--text-soft); line-height: 1.55; }
.challenge-card pre { overflow-x: auto; margin: 14px 0 0; padding: 14px; border-radius: 8px; background: rgba(2,6,23,.7); border: 1px solid rgba(148,163,184,.18); }
.challenge-panel { margin-top: 14px; }
.challenge-panel ul { margin: 10px 0 0; padding-left: 18px; }
@media (max-width: 920px) { .growth-panel, .challenge-grid { grid-template-columns: 1fr; } .challenge-hero { min-height: auto; padding-top: 24px; } }
@media (max-width: 620px) { .featured-agent-card { grid-template-columns: 1fr; } .featured-agent-card dl { grid-auto-flow: row; grid-template-columns: repeat(3, minmax(0, 1fr)); } .featured-agent-card dd { text-align: left; } }

.quickstart-convert {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr);
  gap: 18px;
  align-items: center;
  border-color: rgba(94, 234, 212, .32);
  background: rgba(8, 47, 73, .58);
}

.quickstart-convert h2 {
  margin: 4px 0 8px;
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.quickstart-checklist {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--text-soft);
}

.quickstart-checklist li {
  margin: 6px 0;
}

.challenge-panel--cta {
  border-color: rgba(94, 234, 212, .3);
  background: rgba(8, 47, 73, .52);
}

.challenge-panel--cta pre {
  overflow-x: auto;
  margin: 12px 0 0;
  padding: 14px;
  border-radius: 8px;
  background: rgba(2, 6, 23, .7);
  border: 1px solid rgba(148, 163, 184, .18);
}

@media (max-width: 860px) {
  .quickstart-convert {
    grid-template-columns: 1fr;
  }
}