:root {
  color-scheme: light;
  --bg: #f3f5f9;
  --surface: #ffffff;
  --surface-subtle: #eef2fa;
  --surface-strong: #e1e7f2;
  --line: #d7deea;
  --line-strong: #b7c1d2;
  --text: #111827;
  --muted: #5d6676;
  --faint: #8993a5;
  --accent: #002fa7;
  --accent-hover: #002684;
  --accent-soft: #e8eeff;
  --success: #147a49;
  --success-soft: #e6f6ed;
  --danger: #b42318;
  --danger-soft: #ffebe9;
  --focus: #002fa7;
  --shadow: 0 16px 40px rgb(22 32 52 / 8%);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --space-3xl: 3rem;
  --radius-sm: 4px;
  --radius: 7px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
    env(safe-area-inset-bottom) env(safe-area-inset-left);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
  letter-spacing: 0;
}

button,
select {
  font: inherit;
  letter-spacing: 0;
}

button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

button {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon,
.empty-icon,
.access-gate-icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon {
  width: 1.125rem;
  height: 1.125rem;
  flex: 0 0 auto;
}

.access-gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  padding: max(var(--space-xl), env(safe-area-inset-top))
    max(var(--space-xl), env(safe-area-inset-right))
    max(var(--space-xl), env(safe-area-inset-bottom))
    max(var(--space-xl), env(safe-area-inset-left));
  display: grid;
  place-items: center;
  background: var(--bg);
}

.access-gate-content {
  width: min(100%, 30rem);
}

.access-gate-icon {
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.65rem;
  border-radius: var(--radius);
  display: block;
  background: var(--accent);
  color: var(--surface);
}

.access-gate h1 {
  margin: var(--space-xl) 0 0;
  font-size: 1.5rem;
  line-height: 1.25;
}

.access-gate p {
  margin: var(--space-md) 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
}

.access-progress {
  width: min(100%, 18rem);
  height: 0.375rem;
  margin-top: var(--space-xl);
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-strong);
}

.access-progress span {
  width: 55%;
  height: 100%;
  border-radius: inherit;
  display: block;
  background: var(--accent);
  animation: loading-slide 1.1s var(--ease-standard) infinite;
}

.skip-link {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 50;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--surface);
  transform: translateY(-200%);
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.topbar {
  min-height: 5rem;
  padding: var(--space-lg) max(var(--space-lg), calc((100vw - 80rem) / 2));
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  background: rgb(255 255 255 / 94%);
  backdrop-filter: blur(14px);
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--surface);
  box-shadow: 0 8px 18px rgb(0 47 167 / 18%);
}

.brand h1,
.brand p,
.monitor-strip p,
.section-heading h2,
.section-heading p,
.availability-notice h2,
.availability-notice p {
  margin: 0;
}

.brand h1 {
  font-size: 1.125rem;
  line-height: 1.2;
  font-weight: 750;
}

.brand p {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.75rem;
}

main {
  min-width: 0;
}

.monitor-strip {
  max-width: 80rem;
  min-height: 9.5rem;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  border-bottom: 1px solid var(--line);
  display: grid;
  align-items: center;
  gap: var(--space-2xl);
  animation: reveal-up 420ms var(--ease-out) both;
}

.monitor-time-row {
  margin-top: var(--space-sm);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.countdown {
  font-variant-numeric: tabular-nums;
  font-size: 2rem;
  line-height: 1.1;
  font-weight: 700;
}

.monitor-date,
.monitor-message,
.progress-meta {
  color: var(--muted);
  font-size: 0.875rem;
}

.monitor-message {
  min-height: 1.375rem;
  margin-top: var(--space-md) !important;
}

.availability-notice {
  border-bottom: 1px solid #b9dfca;
  background: var(--success-soft);
  animation: notice-in 300ms var(--ease-out) both;
}

.availability-notice-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.availability-notice-copy {
  min-width: 0;
}

.availability-notice h2 {
  margin-top: var(--space-xs);
  font-size: 1.25rem;
  line-height: 1.3;
}

.availability-notice-copy > p:last-child {
  margin-top: var(--space-sm);
  color: #2f6548;
  font-size: 0.8125rem;
}

.workspace {
  max-width: 80rem;
  margin: 0 auto;
  display: grid;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.config-pane,
.results-pane {
  min-width: 0;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

.config-pane {
  animation: reveal-up 480ms 60ms var(--ease-out) both;
}

.results-pane {
  border-top: 1px solid var(--line);
  background: var(--surface-subtle);
  animation: reveal-up 480ms 110ms var(--ease-out) both;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(0.65rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes loading-slide {
  from {
    transform: translateX(-120%);
  }
  to {
    transform: translateX(220%);
  }
}

@keyframes notice-in {
  from {
    opacity: 0;
    transform: translateY(-0.4rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-dot {
  50% {
    opacity: 0.35;
    transform: scale(0.72);
  }
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(0.7rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 44rem) {
  .monitor-strip {
    grid-template-columns: minmax(16rem, 0.8fr) minmax(22rem, 1.2fr);
    padding-right: var(--space-2xl);
    padding-left: var(--space-2xl);
  }

  .availability-notice-inner,
  .config-pane,
  .results-pane {
    padding-right: var(--space-2xl);
    padding-left: var(--space-2xl);
  }
}

@media (min-width: 67rem) {
  .workspace {
    grid-template-columns: minmax(0, 1.3fr) minmax(24rem, 0.7fr);
  }

  .results-pane {
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}

@media (max-width: 43.99rem) {
  .topbar {
    min-height: 4.5rem;
    padding-right: var(--space-md);
    padding-left: var(--space-md);
  }

  .brand-mark {
    width: 2.5rem;
    height: 2.5rem;
  }

  .status-chip {
    padding-right: var(--space-sm);
    padding-left: var(--space-sm);
  }

  .status-chip span:last-child {
    max-width: 5.75rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .monitor-strip,
  .availability-notice-inner,
  .config-pane,
  .results-pane {
    padding-right: var(--space-md);
    padding-left: var(--space-md);
  }

  .monitor-strip {
    gap: var(--space-xl);
  }

  .countdown {
    font-size: 1.75rem;
  }

  .availability-notice-inner {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .access-progress span,
  .progress-track[data-active="true"] .progress-bar {
    width: 70%;
    animation: none;
    transform: none;
  }
}