:root,
html[data-theme="light"],
html[data-theme="dark"] {
  --bg: #06040d;
  --page: #06040d;
  --base: #06040d;
  --surface: rgba(18, 12, 32, .72);
  --surface-2: rgba(34, 24, 53, .72);
  --line: rgba(255, 255, 255, .14);
  --accent: #2df2dd;
  --accent-text: #b7ffe9;
  --text: #fbf8ff;
  --soft: #e8e2ff;
  --muted: rgba(251, 248, 255, .62);
  --green: #58f0a6;
  --amber: #ffd66b;
  --red: #ff647c;
  --deep: rgba(8, 5, 16, .78);
  --inset: rgba(255, 255, 255, .07);
  --track: rgba(255, 255, 255, .10);
  --table-bg: rgba(45, 242, 221, .22);
  --booth-bg: rgba(255, 79, 199, .18);
  --overlay: rgba(5, 3, 11, .76);
  --grid-line: rgba(255, 255, 255, .06);
  --fixture-bg: rgba(255, 255, 255, .05);
  --fixture-line: rgba(255, 255, 255, .18);
  --nn-void: #06040d;
  --nn-night: #0d071a;
  --nn-violet: #7657ff;
  --nn-cyan: #2df2dd;
  --nn-pink: #ff4fc7;
  --nn-prism: #80a8ff;
  --nn-rose: #f0a7c8;
  --nn-mint: #b7ffe9;
  --nn-glass: linear-gradient(145deg, rgba(255,255,255,.13), rgba(255,255,255,.045));
  --nn-signal: linear-gradient(135deg, #b7ffe9, #2df2dd 46%, #f0a7c8);
  --nn-heat: linear-gradient(135deg, #ffd66b, #f0a7c8, #ff4fc7);
  --nn-shadow: 0 28px 80px rgba(0, 0, 0, .42);
  --nn-glow-cyan: 0 0 34px rgba(45, 242, 221, .28);
  --nn-glow-pink: 0 0 34px rgba(255, 79, 199, .22);
}

* {
  scrollbar-color: rgba(45, 242, 221, .42) rgba(255, 255, 255, .06);
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 14% 7%, rgba(118, 87, 255, .34), transparent 30%),
    radial-gradient(circle at 84% 4%, rgba(255, 79, 199, .17), transparent 31%),
    radial-gradient(circle at 64% 42%, rgba(128, 168, 255, .14), transparent 26%),
    linear-gradient(135deg, #05030b, #12091f 48%, #05030b);
}

body {
  background:
    radial-gradient(circle at 14% 7%, rgba(118, 87, 255, .34), transparent 30%),
    radial-gradient(circle at 84% 4%, rgba(255, 79, 199, .17), transparent 31%),
    radial-gradient(circle at 64% 42%, rgba(128, 168, 255, .14), transparent 26%),
    linear-gradient(135deg, #05030b, #12091f 48%, #05030b) !important;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
}

.phone {
  background: transparent !important;
}

.screen {
  isolation: isolate;
  background:
    radial-gradient(circle at 72% 2%, rgba(255, 79, 199, .24), transparent 31%),
    radial-gradient(circle at 16% 18%, rgba(45, 242, 221, .16), transparent 34%),
    radial-gradient(circle at 52% 72%, rgba(128, 168, 255, .12), transparent 32%),
    linear-gradient(180deg, #201049, #090612 74%) !important;
}

.screen::before,
.panel::before,
.card::before,
.login-card::before,
.modal-card::before,
.wizard-card::before,
.choice-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,.16), transparent 34%);
  opacity: .42;
}

.screen::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 28px;
  pointer-events: none;
  z-index: -1;
}

.bar,
.topbar,
.content,
.screen-stack,
.modal,
.overlay,
.bell {
  position: relative;
  z-index: 1;
}

.h1,
.hero .en,
.event-name .en,
.brand strong,
.panel h2,
.panel h3,
.login-card h1,
.bi.large .en {
  color: var(--text) !important;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
  font-weight: 900 !important;
  letter-spacing: 0 !important;
}

.copy,
.small,
.meta,
.step,
.row-sub,
.brand span,
.bi .zh,
.count-label .en,
.count-label .zh,
.small-copy .en,
.small-copy .zh {
  color: var(--muted) !important;
}

.label,
.kicker .en,
.kicker .zh,
.join-text .en,
.join-text .zh,
.topic-card .en,
.topic-card .zh {
  color: var(--accent-text) !important;
  letter-spacing: .09em;
}

.panel,
.card,
.login-card,
.modal-card,
.wizard-card,
.choice-card,
.code-card,
.count,
.topic-card,
.stat,
.match,
.profile-card,
.ve-layout,
.lp-preview,
.status,
.notice {
  position: relative;
  overflow: hidden;
  background: var(--nn-glass) !important;
  border: 1px solid var(--line) !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), var(--nn-shadow);
  backdrop-filter: blur(22px) saturate(1.2);
}

.panel,
.card,
.login-card,
.modal-card,
.wizard-card,
.choice-card {
  border-radius: 22px !important;
}

.field,
input,
select,
textarea {
  background: rgba(5, 3, 11, .48) !important;
  border: 1px solid rgba(255, 255, 255, .15) !important;
  color: var(--soft) !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}

.field:focus,
input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(45, 242, 221, .14), inset 0 1px 0 rgba(255, 255, 255, .10);
}

.button,
.btn,
.lang,
.tab-btn,
.choice,
.chip,
.pill,
.profile-chip,
.wechat-btn {
  border-radius: 999px !important;
}

.primary,
.btn:not(.outline):not(.ghost):not(.danger),
.button.primary,
.tab.active,
.tab-btn.active,
.choice.on,
.chip.on,
.pill.green,
.badge.green {
  color: #071016 !important;
  background: var(--nn-signal) !important;
  border-color: rgba(183, 255, 233, .48) !important;
  box-shadow: var(--nn-glow-cyan), inset 0 1px 0 rgba(255, 255, 255, .32) !important;
}

.outline,
.btn.outline,
.btn.ghost,
.lang {
  color: var(--accent-text) !important;
  background: rgba(255, 255, 255, .06) !important;
  border: 1px solid rgba(45, 242, 221, .34) !important;
}

.danger,
.btn.danger,
.no {
  color: #18060d !important;
  background: linear-gradient(135deg, #ff8da0, #ff647c) !important;
}

.maybe,
.pill.amber,
.badge.amber {
  color: #170f04 !important;
  background: linear-gradient(135deg, #ffd66b, #f0a7c8) !important;
}

.yes {
  color: #04150f !important;
  background: linear-gradient(135deg, #b7ffe9, #58f0a6) !important;
}

.progress,
.bar-track,
.ve-canvas {
  background: rgba(255, 255, 255, .10) !important;
}

.progress span,
.bar-fill {
  background: linear-gradient(90deg, var(--green), var(--amber), var(--red)) !important;
  box-shadow: 0 0 18px rgba(45, 242, 221, .20);
}

.avatar,
.mini-photo,
.profile-avatar,
.mark {
  color: #071016 !important;
  background: var(--nn-signal) !important;
  border-color: rgba(183, 255, 233, .44) !important;
  box-shadow: var(--nn-glow-cyan);
}

.timer,
.count-number,
.secret,
.code-card .secret {
  color: var(--text) !important;
  text-shadow: 0 0 30px rgba(45, 242, 221, .22);
}

.timer::before,
.code-card::before,
.partner::before,
.talk::before,
.match::before,
.stat::before {
  content: "";
  width: 34px;
  height: 7px;
  display: block;
  border-radius: 999px;
  margin-bottom: 12px;
  background: linear-gradient(90deg, var(--nn-mint), var(--nn-cyan), var(--nn-rose));
}

.partner,
.talk,
.notice,
.stat,
.match {
  border-radius: 22px !important;
}

.talk .hint,
.hint {
  color: #071016 !important;
  background: var(--nn-signal) !important;
  border-radius: 16px;
  padding: 9px 11px;
  font-weight: 900;
}

.talk-text,
.bio-text,
.modal-body {
  color: var(--soft) !important;
}

.bottom-nav,
.tab-bar {
  background: rgba(5, 3, 11, .42) !important;
  border-color: rgba(255, 255, 255, .12) !important;
  backdrop-filter: blur(18px);
}

.topbar {
  background:
    radial-gradient(circle at 8% 0%, rgba(45, 242, 221, .10), transparent 40%),
    rgba(5, 3, 11, .72) !important;
  border-bottom: 1px solid rgba(255, 255, 255, .12) !important;
  backdrop-filter: blur(22px) saturate(1.2);
}

.shell {
  background: transparent !important;
}

.row,
.table > div,
.guest-row,
.profile-chip,
.ve-tree-item,
.round-row {
  background: rgba(255, 255, 255, .055) !important;
  border-color: rgba(255, 255, 255, .10) !important;
}

.status:empty {
  display: none !important;
}

.lp-table,
.ve-table {
  background: rgba(45, 242, 221, .22) !important;
  border-color: rgba(183, 255, 233, .52) !important;
  color: var(--accent-text) !important;
  box-shadow: 0 0 18px rgba(45, 242, 221, .18);
}

.lp-table.booth,
.ve-table.booth {
  background: rgba(255, 79, 199, .16) !important;
  border-color: rgba(240, 167, 200, .48) !important;
}

.fixture,
.ve-fixture {
  background: rgba(128, 168, 255, .10) !important;
  border-color: rgba(128, 168, 255, .26) !important;
}

.panel.edge-pulse {
  box-shadow: inset 0 0 var(--pulse-inset, 34px) var(--pulse-inner, rgba(88, 240, 166, .28)), var(--nn-shadow);
}

body .panel.edge-pulse::after {
  border-color: var(--pulse-color, var(--green));
  opacity: .68;
}

.qr,
.results-qr {
  color: #071016 !important;
  background: rgba(255, 255, 255, .86) !important;
  border-color: var(--accent) !important;
  box-shadow: var(--nn-glow-cyan);
}

.bell {
  background: rgba(5, 3, 11, .82) !important;
  border: 1px solid rgba(255, 214, 107, .38) !important;
  box-shadow: 0 22px 70px rgba(0, 0, 0, .44), 0 0 34px rgba(255, 214, 107, .18);
  backdrop-filter: blur(18px);
}

.bell::before,
.status:not(:empty)::before {
  content: "⌁";
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-right: 8px;
  border-radius: 11px;
  color: #071016;
  background: linear-gradient(135deg, var(--amber), var(--nn-rose));
}

.signal-flow,
.signal-tabs {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
}

.signal-flow {
  grid-template-columns: repeat(6, 1fr);
  padding: 7px;
  border-radius: 999px;
  background: rgba(5, 3, 11, .46);
  border: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(18px);
}

.signal-step {
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
}

.signal-step.on {
  background: linear-gradient(90deg, var(--nn-mint), var(--nn-cyan), var(--nn-rose));
  box-shadow: 0 0 18px rgba(45, 242, 221, .22);
}

.signal-tabs {
  grid-template-columns: repeat(3, 1fr);
  padding: 6px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .085);
  border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(18px);
}

.signal-tab {
  min-height: 38px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 950;
}

.signal-tab.on {
  color: #071016;
  background: var(--nn-signal);
  box-shadow: var(--nn-glow-cyan);
}

.signal-hero {
  margin-bottom: 14px;
  padding: 17px;
  border-radius: 26px;
  background: var(--nn-glass);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12), var(--nn-shadow);
  backdrop-filter: blur(22px) saturate(1.2);
}

.signal-hero .timer {
  margin: 0 0 11px !important;
}

.signal-hero .progress {
  margin: 0 !important;
}

.signal-caption {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.flash-card {
  margin-top: 10px;
  padding: 13px;
  border-radius: 21px;
  background: linear-gradient(145deg, rgba(255,255,255,.12), rgba(255,255,255,.045));
  border: 1px solid rgba(255,255,255,.13);
  backdrop-filter: blur(14px);
}

.flash-card.hot {
  color: #071016 !important;
  background: var(--nn-signal) !important;
  box-shadow: var(--nn-glow-cyan);
}

.flash-card .label {
  margin-top: 0;
}

.signal-command {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  margin: 0 0 16px;
  padding: 14px;
  border-radius: 24px;
  background: var(--nn-glass);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12), var(--nn-shadow);
  backdrop-filter: blur(22px) saturate(1.2);
}

.signal-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 17px;
  color: #071016;
  font-weight: 950;
  background: var(--nn-signal);
  box-shadow: var(--nn-glow-cyan);
}

.signal-command-title {
  color: var(--text);
  font-size: 18px;
  line-height: 1.05;
  font-weight: 950;
}

.signal-command-sub {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.signal-metrics {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.signal-metric {
  min-width: 86px;
  padding: 10px 11px;
  border-radius: 18px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .10);
}

.signal-metric strong {
  display: block;
  color: var(--text);
  font-size: 20px;
  line-height: 1;
}

.signal-metric span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 850;
}

.command-panel .bi.large {
  display: flex;
  align-items: center;
  gap: 10px;
}

.command-panel .bi.large::before {
  content: "⌁";
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 13px;
  color: #071016;
  background: var(--nn-signal);
  box-shadow: var(--nn-glow-cyan);
}

@media (max-width: 640px) {
  .screen {
    padding-left: calc(16px + env(safe-area-inset-left)) !important;
    padding-right: calc(16px + env(safe-area-inset-right)) !important;
  }

  .h1 {
    font-size: 30px !important;
  }

  .signal-command {
    grid-template-columns: auto 1fr;
  }

  .signal-metrics {
    grid-column: 1 / -1;
    justify-content: stretch;
  }

  .signal-metric {
    flex: 1 1 88px;
  }
}

/* Flashcard wizard — smoked-glass cards */
.flashcard {
  background:
    radial-gradient(130% 55% at 50% -8%, rgba(255, 255, 255, .10), transparent 62%),
    radial-gradient(90% 40% at 88% 108%, rgba(255, 79, 199, .10), transparent 60%),
    radial-gradient(90% 40% at 10% 108%, rgba(45, 242, 221, .08), transparent 60%),
    linear-gradient(160deg, rgba(22, 13, 42, .66), rgba(8, 5, 16, .82)) !important;
  -webkit-backdrop-filter: blur(20px) saturate(1.35);
  backdrop-filter: blur(20px) saturate(1.35);
  border: 1px solid rgba(255, 255, 255, .17) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .16),
    inset 0 -1px 0 rgba(255, 255, 255, .04),
    0 34px 80px rgba(0, 0, 0, .58),
    0 0 48px rgba(118, 87, 255, .18) !important;
}

.tinder-opt {
  background: rgba(255, 255, 255, .045);
  border-color: rgba(255, 255, 255, .15);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.progress-line {
  background: rgba(255, 255, 255, .10);
}

.progress-line span {
  background: var(--nn-signal);
  box-shadow: 0 0 12px rgba(45, 242, 221, .5);
}

.stamp {
  border-color: var(--nn-cyan);
  color: var(--nn-mint);
  background: rgba(8, 5, 16, .55);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  box-shadow: 0 0 24px rgba(45, 242, 221, .35);
}