:root {
  --ink: #0b1530;
  --deep: #1b2750;
  --paper: #f4f1e8;
  --paper-2: #fffdf6;
  --accent: #e8ff1a;
  --cinnabar: #c8412b;
  --muted: #5a6177;
  --line: rgba(11, 21, 48, 0.14);
  --shadow: 0 18px 48px rgba(11, 21, 48, 0.14);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 90% 8%, rgba(232, 255, 26, 0.12), transparent 24rem),
    linear-gradient(135deg, #081126 0%, var(--ink) 42%, #101b3c 100%);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.16;
  background-image:
    radial-gradient(circle at 50% 50%, transparent 0 19px, var(--accent) 20px 23px, transparent 24px),
    radial-gradient(circle at 50% 50%, transparent 0 19px, var(--accent) 20px 23px, transparent 24px);
  background-position: 0 0, 34px 0;
  background-size: 136px 74px;
  mask-image: linear-gradient(90deg, transparent, #000 8%, transparent 45%);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  height: 100vh;
  flex-direction: column;
  padding: 26px 18px;
  color: var(--paper);
  border-right: 1px solid rgba(244, 241, 232, 0.15);
  background: rgba(5, 12, 28, 0.78);
  backdrop-filter: blur(22px);
}

.brand-lockup {
  display: grid;
  place-items: center;
  padding: 0 0 22px;
  text-decoration: none;
}

.brand-logo-icon {
  display: block;
  width: 42px;
  height: 42px;
}

.topbar-logo {
  display: block;
  width: min(520px, 54vw);
  height: auto;
  margin-bottom: 20px;
}

.masthead-brand {
  max-width: 760px;
}

.side-nav {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid rgba(244, 241, 232, 0.16);
}

.side-link {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  color: rgba(244, 241, 232, 0.78);
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  text-align: left;
}

.side-link:hover,
.side-link.is-active {
  color: var(--accent);
  border-color: rgba(232, 255, 26, 0.24);
  background: rgba(232, 255, 26, 0.07);
}

.icon {
  display: inline-grid;
  width: 22px;
  place-items: center;
  font-family: var(--mono);
}

.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 14px;
}

.sidebar-footer p {
  margin: 0;
  color: rgba(244, 241, 232, 0.56);
  font-size: 13px;
}

.feedback-open,
.primary-button,
.ghost-button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 8px;
  font-weight: 700;
}

.feedback-open,
.primary-button {
  color: var(--ink);
  border: 1px solid var(--accent);
  background: var(--accent);
}

.main {
  position: relative;
  padding: 28px clamp(18px, 3vw, 42px) 56px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
  color: var(--paper);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.18;
}

h1 {
  font-size: clamp(28px, 3.2vw, 46px);
}

h2 {
  font-size: clamp(22px, 2.2vw, 34px);
}

h3 {
  font-size: 22px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.search-box {
  display: flex;
  align-items: center;
  min-height: 44px;
  width: min(360px, 46vw);
  padding: 0 12px;
  color: rgba(244, 241, 232, 0.62);
  border: 1px solid rgba(244, 241, 232, 0.2);
  border-radius: 8px;
  background: rgba(244, 241, 232, 0.08);
}

.search-box span {
  margin-right: 10px;
  font-size: 13px;
}

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

.search-box input::placeholder {
  color: rgba(244, 241, 232, 0.45);
}

.ghost-button {
  color: var(--paper);
  border: 1px solid rgba(244, 241, 232, 0.22);
  background: rgba(244, 241, 232, 0.08);
}

.ghost-button.is-pulsing {
  animation: pulse 0.7s ease;
}

@keyframes pulse {
  50% {
    color: var(--ink);
    background: var(--accent);
  }
}

.hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(244, 241, 232, 0.18);
  border-radius: 8px;
  color: var(--paper);
  background:
    linear-gradient(135deg, rgba(27, 39, 80, 0.94), rgba(11, 21, 48, 0.94)),
    var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-copy {
  position: relative;
}

.hero-copy::after {
  position: absolute;
  right: 5%;
  bottom: -46px;
  width: 180px;
  height: 96px;
  border: 16px solid rgba(232, 255, 26, 0.16);
  border-left-width: 18px;
  border-radius: 999px;
  content: "";
}

.hero-copy .date-line {
  margin: 0 0 14px;
  color: rgba(244, 241, 232, 0.72);
  font-family: var(--mono);
  font-size: 13px;
}

.hero-copy p:last-child {
  max-width: 720px;
  margin: 18px 0 0;
  color: rgba(244, 241, 232, 0.78);
}

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

.metric-card,
.panel,
.hot-section,
.feed-section,
.analytics-view {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 246, 0.94);
  box-shadow: var(--shadow);
}

.metric-card {
  min-height: 112px;
  padding: 18px;
  color: var(--ink);
  background: var(--paper);
}

.metric-card span,
.metric-card em,
.mini-stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
}

.metric-card strong {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 40px;
  line-height: 1;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 24px;
  align-items: start;
}

.feed-column,
.insight-column {
  display: grid;
  gap: 18px;
}

.hot-section,
.feed-section,
.panel,
.analytics-view {
  padding: 20px;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-head.compact {
  margin-bottom: 12px;
}

.mono,
.score {
  font-family: var(--mono);
}

.hot-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hot-card {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  min-height: 108px;
  padding: 14px;
  border: 1px solid rgba(11, 21, 48, 0.12);
  border-radius: 8px;
  background: #fffdf7;
}

.hot-rank {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--ink);
  border-radius: 50%;
  background: var(--accent);
  font-family: var(--mono);
  font-weight: 800;
}

.hot-card a {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.hot-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.score {
  color: var(--cinnabar);
  font-weight: 800;
}

.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.filter-chip {
  min-height: 34px;
  padding: 0 13px;
  color: var(--deep);
  border: 1px solid rgba(11, 21, 48, 0.16);
  border-radius: 8px;
  background: transparent;
}

.filter-chip.is-active {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent);
  font-weight: 800;
}

.timeline {
  display: grid;
  gap: 18px;
}

.day-group {
  display: grid;
  gap: 14px;
}

.day-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

.day-head span {
  color: var(--deep);
  font-weight: 800;
}

.day-head i {
  font-style: normal;
}

.timeline-item {
  display: grid;
  grid-template-columns: 56px 22px minmax(0, 1fr);
  gap: 12px;
}

.timeline-time {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  padding-top: 18px;
}

.timeline-rail {
  position: relative;
}

.timeline-rail::before {
  position: absolute;
  top: 0;
  bottom: -14px;
  left: 10px;
  width: 1px;
  background: rgba(11, 21, 48, 0.14);
  content: "";
}

.timeline-rail span {
  position: sticky;
  top: 28px;
  display: block;
  width: 21px;
  height: 21px;
  margin-top: 17px;
  border: 5px solid var(--accent);
  border-radius: 50%;
  background: var(--ink);
}

.timeline-card {
  padding: 18px;
  border: 1px solid rgba(11, 21, 48, 0.13);
  border-radius: 8px;
  background: #fffdf8;
}

.timeline-card:hover {
  border-color: rgba(232, 255, 26, 0.95);
  box-shadow: 0 12px 30px rgba(11, 21, 48, 0.12);
}

.card-head,
.card-foot,
.card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-head {
  justify-content: space-between;
  margin-bottom: 12px;
}

.source-pill,
.tag-row span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 8px;
  background: rgba(11, 21, 48, 0.08);
  color: var(--deep);
  font-size: 12px;
  font-weight: 800;
}

.source-name,
.source-date {
  color: var(--muted);
  font-size: 13px;
}

.timeline-card h3 {
  margin-bottom: 10px;
}

.timeline-card p {
  margin: 0;
  color: #2e3650;
}

.favorite-button,
.icon-button {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(11, 21, 48, 0.16);
  border-radius: 8px;
  background: transparent;
}

.favorite-button.is-active {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent);
}

.tag-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.reason {
  display: grid;
  gap: 4px;
  margin-top: 14px;
  padding: 12px 14px;
  border-left: 4px solid var(--accent);
  background: rgba(232, 255, 26, 0.12);
}

.reason strong {
  font-size: 13px;
}

.reason span {
  color: #303954;
  font-size: 14px;
}

.card-foot {
  justify-content: space-between;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.card-foot a {
  color: var(--deep);
  font-weight: 800;
  text-decoration: none;
}

.brief {
  display: grid;
  gap: 5px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(11, 21, 48, 0.1);
  text-decoration: none;
}

.brief:last-child {
  border-bottom: 0;
}

.brief span {
  color: var(--cinnabar);
  font-size: 12px;
  font-weight: 800;
}

.brief strong {
  line-height: 1.5;
}

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

.analytics-cards {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
}

.mini-stat {
  min-height: 74px;
  padding: 12px;
  border: 1px solid rgba(11, 21, 48, 0.1);
  border-radius: 8px;
  background: rgba(244, 241, 232, 0.62);
}

.mini-stat strong {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 24px;
}

.bar-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.bar-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 24px;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.bar-row i {
  display: block;
  height: 8px;
  overflow: hidden;
  border-radius: 99px;
  background: rgba(11, 21, 48, 0.1);
}

.bar-row b {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.event-log {
  display: grid;
  gap: 8px;
}

.event-log p {
  display: flex;
  gap: 12px;
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px solid rgba(11, 21, 48, 0.1);
}

.event-log span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.empty-state {
  padding: 36px;
  color: var(--muted);
  border: 1px dashed rgba(11, 21, 48, 0.22);
  border-radius: 8px;
  text-align: center;
}

.feedback-dialog {
  width: min(620px, calc(100vw - 32px));
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: var(--paper-2);
  color: var(--ink);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.32);
}

.feedback-dialog::backdrop {
  background: rgba(5, 12, 28, 0.72);
}

.feedback-dialog form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.dialog-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.feedback-dialog label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
}

.feedback-dialog select,
.feedback-dialog textarea {
  width: 100%;
  color: var(--ink);
  border: 1px solid rgba(11, 21, 48, 0.18);
  border-radius: 8px;
  background: #fffdf8;
}

.feedback-dialog select {
  min-height: 42px;
  padding: 0 10px;
}

.feedback-dialog textarea {
  padding: 10px;
  resize: vertical;
}

.saved-note {
  min-height: 22px;
  margin: 0;
  color: var(--cinnabar);
  font-size: 13px;
}

.mobile-tabbar {
  display: none;
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 88px minmax(0, 1fr);
  }

  .side-link span:last-child,
  .sidebar-footer p {
    display: none;
  }

  .side-link {
    justify-content: center;
    padding: 0;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .insight-column {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  body {
    background: var(--ink);
  }

  .app-shell {
    display: block;
  }

  .sidebar {
    display: none;
  }

  .main {
    padding: 18px 14px 92px;
  }

  .topbar,
  .topbar-actions {
    display: grid;
    justify-content: stretch;
  }

  .topbar-logo {
    width: min(520px, 88vw);
  }

  .search-box {
    width: 100%;
  }

  .hero-panel,
  .content-grid,
  .insight-column {
    grid-template-columns: 1fr;
  }

  .signal-board,
  .hot-list,
  .analytics-cards {
    grid-template-columns: 1fr 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .timeline-time {
    padding-top: 0;
  }

  .timeline-rail {
    display: none;
  }

  .card-head,
  .card-foot {
    align-items: flex-start;
    flex-direction: column;
  }

  .mobile-tabbar {
    position: fixed;
    right: 12px;
    bottom: 12px;
    left: 12px;
    z-index: 10;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 8px;
    border: 1px solid rgba(244, 241, 232, 0.16);
    border-radius: 8px;
    background: rgba(5, 12, 28, 0.86);
    backdrop-filter: blur(18px);
  }

  .mobile-tab {
    min-height: 42px;
    color: rgba(244, 241, 232, 0.72);
    border: 0;
    border-radius: 8px;
    background: transparent;
    font-size: 13px;
  }

  .mobile-tab.is-active {
    color: var(--ink);
    background: var(--accent);
    font-weight: 800;
  }
}

@media (max-width: 520px) {
  .hero-panel,
  .hot-section,
  .feed-section,
  .panel,
  .analytics-view {
    padding: 16px;
  }

  .signal-board,
  .hot-list,
  .analytics-grid,
  .analytics-cards {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 24px;
  }
}