/* ============================================
   BULLETIN — RBI Grade B Current Affairs
   Studious / academic aesthetic, Claude amber accent
   ============================================ */

:root {
  /* Type */
  --font-serif: "Source Serif 4", "Tiempos Text", Georgia, serif;
  --font-ui: "Inter", -apple-system, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;

  /* Light palette — warm paper + ink */
  --bg:        #F6F1E7;       /* warm cream paper */
  --bg-2:      #EFE7D5;       /* tinted */
  --surface:   #FBF7EE;       /* card surface */
  --surface-2: #FFFCF4;       /* lifted */
  --line:      #E1D6BD;       /* hairline */
  --line-2:    #D6C8A8;       /* heavier rule */
  --ink:       #1F1B16;       /* near-black ink */
  --ink-2:     #4A4238;
  --ink-3:     #7A6F5C;
  --ink-4:     #A89A82;

  /* Accent — Claude/Anthropic amber */
  --accent:    #D4A04A;
  --accent-2:  #B8842E;
  --accent-bg: #F3E5C2;
  --accent-ink:#5C4116;

  /* Status */
  --green:     #2E7D4F;
  --red:       #B5453B;

  /* Heatmap (amber gradient) */
  --hm-0: #EFE7D5;
  --hm-1: #ECD9A8;
  --hm-2: #E4C57A;
  --hm-3: #D4A04A;
  --hm-4: #A87830;

  /* Shadows (very soft) */
  --shadow-sm: 0 1px 0 rgba(40, 30, 10, 0.04);
  --shadow:    0 1px 2px rgba(40, 30, 10, 0.06), 0 0 0 1px rgba(40, 30, 10, 0.04);

  --radius: 4px;
  --radius-md: 6px;

  --nav-h: 60px;
  --rail-w: 232px;
  --content-max: 1280px;
}

[data-theme="dark"] {
  --bg:        #1A1612;
  --bg-2:      #221E18;
  --surface:   #221D16;
  --surface-2: #2A241B;
  --line:      #3A3225;
  --line-2:    #4A4030;
  --ink:       #F2EADA;
  --ink-2:     #C9BFAA;
  --ink-3:     #948969;
  --ink-4:     #6E6450;

  --accent:    #E2B566;
  --accent-2:  #D4A04A;
  --accent-bg: #3A2E14;
  --accent-ink:#E8C988;

  --hm-0: #2A2419;
  --hm-1: #3D331E;
  --hm-2: #6B5524;
  --hm-3: #B89346;
  --hm-4: #E2B566;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(212, 160, 74, 0.08), transparent 60%),
    radial-gradient(800px 400px at -10% 20%, rgba(212, 160, 74, 0.05), transparent 60%);
  background-attachment: fixed;
}

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; padding: 0; }
input { font-family: inherit; color: inherit; }
input:focus { outline: none; }

/* ============ APP SHELL ============ */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-body {
  display: flex;
  flex: 1;
  min-height: 0;
}

.app-main {
  flex: 1;
  min-width: 0;
  padding: 32px 40px 80px;
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
}

.app-main.with-rail {
  margin-left: 0;
}

/* ============ NAVBAR ============ */
.navbar {
  height: var(--nav-h);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding-right: 24px;
  border-right: 1px solid var(--line);
  height: 40px;
}
.brand-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
}
.brand-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--ink);
}
.brand-sub {
  font-family: var(--font-ui);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 3px;
}

.nav-tabs {
  display: flex;
  gap: 2px;
  margin-right: auto;
}
.nav-tab {
  padding: 8px 14px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: var(--radius);
  position: relative;
}
.nav-tab:hover { color: var(--ink); background: var(--bg-2); }
.nav-tab.active { color: var(--ink); }
.nav-tab.active::after {
  content: "";
  position: absolute;
  bottom: -10px; left: 14px; right: 14px;
  height: 2px;
  background: var(--accent);
}

.nav-search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  max-width: 480px;
  height: 36px;
  padding: 0 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-left: auto;
  transition: border-color .15s;
}
.nav-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 160, 74, 0.15);
}
.nav-search input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink);
}
.nav-search input::placeholder { color: var(--ink-4); }
.nav-search kbd {
  font-family: var(--font-ui);
  font-size: 10.5px;
  color: var(--ink-3);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 3px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  color: var(--ink-2);
  border-radius: var(--radius);
  transition: all .12s;
}
.icon-btn:hover { background: var(--bg-2); color: var(--ink); }

.nav-streak {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: var(--accent-bg);
  color: var(--accent-ink);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid #E5CC8A;
}

.nav-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  display: grid; place-items: center;
  font-family: var(--font-ui);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ============ LEFT RAIL ============ */
.left-rail {
  width: var(--rail-w);
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  background: var(--surface);
  padding: 28px 16px;
  height: calc(100vh - var(--nav-h));
  position: sticky;
  top: var(--nav-h);
  overflow-y: auto;
  font-family: var(--font-ui);
}

.rail-section { margin-bottom: 28px; }
.rail-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 10px 8px;
}

.rail-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--ink-2);
  font-weight: 500;
  margin-bottom: 1px;
  transition: all .12s;
  text-align: left;
}
.rail-item:hover { background: var(--bg-2); color: var(--ink); }
.rail-item.active { background: var(--accent-bg); color: var(--accent-ink); }
.rail-item.active svg { color: var(--accent-2); }
.rail-text { flex: 1; }
.rail-hint { font-size: 11px; color: var(--ink-4); font-weight: 400; }
.rail-item.active .rail-hint { color: var(--accent-ink); opacity: 0.7; }

.rail-cat {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--ink-2);
  text-align: left;
}
.rail-cat:hover { background: var(--bg-2); color: var(--ink); }
.rail-cat-dot { width: 7px; height: 7px; border-radius: 99px; flex-shrink: 0; }
.rail-cat-name { flex: 1; }
.rail-cat-count {
  font-size: 11px;
  color: var(--ink-4);
  font-variant-numeric: tabular-nums;
}

.rail-streak-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  margin: 0 4px;
}
.streak-title {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 6px;
}
.streak-num {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.streak-dots {
  display: flex; gap: 3px;
  margin-bottom: 8px;
}
.streak-dot {
  flex: 1;
  height: 6px;
  background: var(--line);
  border-radius: 1px;
}
.streak-dot.on { background: var(--accent); }
.streak-hint {
  font-size: 11px;
  color: var(--ink-3);
  line-height: 1.4;
}

/* ============ TYPOGRAPHY HELPERS ============ */
.kicker {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 6px;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.page-title {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
}
.page-sub {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--ink-3);
  margin: 6px 0 0;
}

/* ============ HOMEPAGE ============ */
.home-page { display: flex; flex-direction: column; gap: 56px; }

.hero {
  padding: 12px 0 24px;
  border-bottom: 1px solid var(--line);
}
.hero-meta {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-3);
  margin-bottom: 16px;
}
.hero-date { font-weight: 600; color: var(--accent-2); letter-spacing: 0.02em; }
.hero-sep { color: var(--ink-4); }
.hero-stat { color: var(--ink-2); }

.hero-title {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  max-width: 920px;
  text-wrap: balance;
}
.hero-title em {
  font-style: italic;
  color: var(--accent-2);
  font-weight: 500;
}
.hero-sub {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 720px;
  margin: 0 0 24px;
}

.hero-quick { display: flex; gap: 8px; flex-wrap: wrap; }

.quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .12s;
}
.quick-pill:hover {
  border-color: var(--ink-3);
  background: var(--surface-2);
}
.quick-pill.primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.quick-pill.primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #fff;
}

/* ============ SECTIONS ============ */
.section { display: flex; flex-direction: column; gap: 20px; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.section-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.section-sub {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-3);
  margin: 4px 0 0;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--accent-2);
  padding: 4px 0;
}
.link-btn:hover { color: var(--ink); }
.link-btn.slim { font-size: 11.5px; }

/* ============ HIGHLIGHT GRID (HERO LEAD STORY) ============ */
.highlight-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: stretch;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  cursor: pointer;
  transition: all .15s;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
}
.feature-card:hover {
  border-color: var(--ink-4);
  background: var(--surface-2);
}
.feature-side {
  display: flex; align-items: center; justify-content: space-between;
}
.feature-rank {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.feature-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.feature-summary {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0;
  flex: 1;
}
.feature-foot {
  display: flex; align-items: center; gap: 16px;
  font-family: var(--font-ui);
  font-size: 11.5px;
  color: var(--ink-3);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.feature-foot span { display: inline-flex; align-items: center; gap: 4px; }

.highlight-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ============ FILTER CHIPS ============ */
.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 99px;
  transition: all .12s;
}
.chip:hover { border-color: var(--ink-3); }
.chip.active {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--ink);
  color: var(--bg);
}
.chip-dot { width: 6px; height: 6px; border-radius: 99px; }

/* ============ FEED ============ */
.feed { display: flex; flex-direction: column; gap: 32px; }
.feed-group {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
}
.feed-date {
  position: sticky;
  top: 76px;
  align-self: flex-start;
  height: fit-content;
  font-family: var(--font-serif);
  border-right: 1px solid var(--line);
  padding-right: 16px;
}
.feed-date-num {
  display: block;
  font-size: 36px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.feed-date-mon {
  display: block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-top: 2px;
}
.feed-date-dow {
  display: block;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 8px;
}

.feed-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

/* ============ NEWS CARD ============ */
.news-card {
  display: grid;
  grid-template-columns: 3px 1fr;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  cursor: pointer;
  overflow: hidden;
  transition: all .12s;
}
.news-card:hover {
  border-color: var(--ink-4);
  background: var(--surface-2);
  transform: translateY(-1px);
}
.news-card.is-revised { opacity: 0.75; }
.nc-rule { width: 3px; height: 100%; }
.nc-body { padding: 16px 20px 14px; min-width: 0; }
.nc-top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 11.5px;
  color: var(--ink-3);
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.nc-date { font-weight: 500; }
.nc-meta { display: inline-flex; align-items: center; gap: 4px; }
.nc-revised {
  display: inline-flex; align-items: center; gap: 3px;
  color: var(--green);
  font-weight: 500;
}
.nc-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--ink);
  text-wrap: balance;
}
.nc-summary {
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.nc-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.nc-concepts {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.nc-concept, .nc-concept-more {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--ink-3);
  background: var(--bg-2);
  padding: 3px 7px;
  border-radius: 3px;
}
.nc-concept-more { color: var(--ink-4); }
.nc-actions { display: flex; gap: 4px; }
.nc-icon {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  color: var(--ink-3);
  border-radius: 3px;
  transition: all .12s;
}
.nc-icon:hover { background: var(--bg-2); color: var(--ink); }
.nc-icon.active { color: var(--accent-2); }

/* compact card */
.news-card-compact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  transition: all .12s;
}
.news-card-compact:hover { border-color: var(--ink-4); }
.ncc-title {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.3;
  color: var(--ink);
  font-weight: 500;
}
.ncc-meta {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--ink-3);
}

/* ============ ARCHIVE PAGE ============ */
.archive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.archive-cal { display: flex; flex-direction: column; gap: 20px; }

.month-nav { display: flex; gap: 4px; }

.heatmap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
}
.heatmap-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.heatmap-month {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.heatmap-legend {
  display: flex; align-items: center; gap: 4px;
  font-family: var(--font-ui);
  font-size: 10.5px;
  color: var(--ink-3);
}
.hm-swatch {
  width: 12px; height: 12px;
  border-radius: 2px;
}
.hm-swatch.lvl-0 { background: var(--hm-0); }
.hm-swatch.lvl-1 { background: var(--hm-1); }
.hm-swatch.lvl-2 { background: var(--hm-2); }
.hm-swatch.lvl-3 { background: var(--hm-3); }
.hm-swatch.lvl-4 { background: var(--hm-4); }

.heatmap-dow {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 6px;
  padding: 0 2px;
}
.heatmap-dow > div { text-align: center; }

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}
.hm-cell {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding: 6px;
  background: var(--hm-0);
  border: 1px solid transparent;
  border-radius: 3px;
  transition: all .1s;
  position: relative;
}
.hm-cell:hover:not(.empty):not(.future) {
  border-color: var(--ink);
  transform: scale(1.05);
  z-index: 2;
}
.hm-cell.empty { background: transparent; cursor: default; }
.hm-cell.future { opacity: 0.3; cursor: not-allowed; }
.hm-cell.lvl-0 { background: var(--hm-0); }
.hm-cell.lvl-1 { background: var(--hm-1); }
.hm-cell.lvl-2 { background: var(--hm-2); }
.hm-cell.lvl-3 { background: var(--hm-3); }
.hm-cell.lvl-4 { background: var(--hm-4); }
.hm-cell.lvl-3 .hm-num, .hm-cell.lvl-4 .hm-num { color: #fff; }
.hm-cell.selected {
  border-color: var(--ink);
  box-shadow: 0 0 0 2px var(--accent);
}
.hm-num {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hm-dot {
  font-family: var(--font-ui);
  font-size: 9.5px;
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: -0.02em;
}
.hm-cell.lvl-3 .hm-dot, .hm-cell.lvl-4 .hm-dot { color: rgba(255,255,255,0.85); }

.cal-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.stat {
  background: var(--surface);
  padding: 16px;
}
.stat-num {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.stat-label {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 4px;
}

.archive-day { display: flex; flex-direction: column; gap: 16px; }
.day-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.day-date {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
}
.day-list { display: flex; flex-direction: column; gap: 12px; }

.primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius);
  transition: all .12s;
}
.primary-btn:hover { background: var(--accent-2); color: #fff; }

/* ============ DAILY PAGE ============ */
.daily-page {
  position: relative;
  margin: -32px -40px 0;
  padding: 0;
  max-width: none;
}
.read-progress {
  position: sticky;
  top: var(--nav-h);
  height: 2px;
  z-index: 10;
  transition: width .15s;
}

.daily-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 280px;
  gap: 0;
  min-height: calc(100vh - var(--nav-h));
}

.daily-toc {
  border-right: 1px solid var(--line);
  padding: 24px 20px;
  position: sticky;
  top: var(--nav-h);
  align-self: flex-start;
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  font-family: var(--font-ui);
}
.toc-head { padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.toc-date {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-top: 12px;
  color: var(--ink);
}
.toc-day {
  font-size: 11.5px;
  color: var(--ink-3);
  margin-top: 2px;
}
.toc-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.toc-list { display: flex; flex-direction: column; gap: 2px; }
.toc-item {
  display: grid;
  grid-template-columns: 22px 2px 1fr auto;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 8px;
  border-radius: var(--radius);
  text-align: left;
  transition: background .12s;
  position: relative;
}
.toc-item:hover { background: var(--bg-2); }
.toc-item.active {
  background: var(--accent-bg);
}
.toc-num {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--ink-4);
  letter-spacing: 0.04em;
  padding-top: 2px;
}
.toc-rule { width: 2px; height: 100%; min-height: 36px; border-radius: 1px; }
.toc-content { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.toc-cat {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.toc-title {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.3;
  color: var(--ink);
  font-weight: 500;
}
.toc-check { color: var(--green); margin-top: 4px; }

.daily-article {
  overflow-y: auto;
  max-height: calc(100vh - var(--nav-h));
  padding: 56px 64px 80px;
}
.article-inner { max-width: 680px; margin: 0 auto; }

.article-meta-top {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.article-meta-top span { display: inline-flex; align-items: center; gap: 4px; }
.dot-sep { color: var(--ink-4); }

.article-title {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
.article-lede {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink-2);
  font-style: italic;
  margin: 0 0 24px;
  border-left: 2px solid var(--accent);
  padding-left: 16px;
}

.article-actions {
  display: flex;
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}
.act-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all .12s;
}
.act-btn:hover { border-color: var(--ink-3); color: var(--ink); }
.act-btn.active {
  border-color: var(--accent);
  background: var(--accent-bg);
  color: var(--accent-ink);
}
.act-btn.primary.active {
  border-color: var(--green);
  background: rgba(46, 125, 79, 0.1);
  color: var(--green);
}

.article-body {
  font-family: var(--font-serif);
  font-size: 17.5px;
  line-height: 1.7;
  color: var(--ink);
}
.article-body h2 {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 36px 0 12px;
  color: var(--ink);
}
.article-body p { margin: 0 0 18px; color: var(--ink-2); }
.article-body ul {
  margin: 0 0 20px;
  padding-left: 0;
  list-style: none;
}
.article-body li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--ink-2);
}
.article-body li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 99px;
  background: var(--accent);
}

/* ============ MCQ ============ */
.article-mcqs {
  margin-top: 48px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.mcqs-head { margin-bottom: 24px; }
.mcqs-head h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.01em;
}
.mcqs-head p {
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--ink-3);
  margin: 4px 0 0;
}

.mcq {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 20px;
}
.mcq:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }
.mcq-head {
  display: flex; gap: 10px;
  margin-bottom: 14px;
}
.mcq-num {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-2);
  letter-spacing: 0.08em;
  background: var(--accent-bg);
  padding: 4px 8px;
  border-radius: 3px;
  height: fit-content;
  flex-shrink: 0;
}
.mcq-q {
  font-family: var(--font-serif);
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--ink);
  font-weight: 500;
}
.mcq-opts { display: flex; flex-direction: column; gap: 6px; }
.mcq-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink-2);
  text-align: left;
  transition: all .12s;
}
.mcq-opt:hover:not(:disabled) {
  border-color: var(--ink-3);
  background: var(--surface);
}
.mcq-opt:disabled { cursor: default; }
.mcq-letter {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-3);
  flex-shrink: 0;
}
.mcq-text { flex: 1; }
.mcq-opt.correct {
  background: rgba(46, 125, 79, 0.08);
  border-color: var(--green);
  color: var(--green);
}
.mcq-opt.correct .mcq-letter { background: var(--green); color: #fff; border-color: var(--green); }
.mcq-opt.wrong {
  background: rgba(181, 69, 59, 0.08);
  border-color: var(--red);
  color: var(--red);
}
.mcq-opt.wrong .mcq-letter { background: var(--red); color: #fff; border-color: var(--red); }
.mcq-opt.muted { opacity: 0.5; }

.mcq-explain {
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--bg);
  border-left: 2px solid var(--accent);
  border-radius: 0 3px 3px 0;
}
.mcq-explain-label {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 4px;
}
.mcq-explain-text {
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-2);
}

/* footer nav */
.article-footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.footer-nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  text-align: left;
  transition: all .12s;
}
.footer-nav-btn.right { text-align: right; justify-content: flex-end; }
.footer-nav-btn:hover:not(:disabled) { border-color: var(--ink-3); }
.footer-nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.fn-label {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 3px;
}
.fn-title {
  font-family: var(--font-serif);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* daily side */
.daily-side {
  border-left: 1px solid var(--line);
  padding: 24px 20px;
  position: sticky;
  top: var(--nav-h);
  align-self: flex-start;
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  font-family: var(--font-ui);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
}
.side-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.side-concepts { display: flex; flex-wrap: wrap; gap: 4px; }
.side-concept {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 3px 7px;
  border-radius: 3px;
}

.trend-row {
  display: grid;
  grid-template-columns: 7px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 7px 0;
  font-size: 12.5px;
  border-bottom: 1px solid var(--line);
}
.trend-row:last-child { border-bottom: none; }
.trend-dot { width: 7px; height: 7px; border-radius: 99px; }
.trend-name { color: var(--ink); font-weight: 500; }
.trend-count {
  font-size: 11px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.related-row {
  display: grid;
  grid-template-columns: 2px 1fr;
  gap: 10px;
  width: 100%;
  padding: 10px 0;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.related-row:last-child { border-bottom: none; }
.related-row:hover .related-title { color: var(--accent-2); }
.related-rule { width: 2px; min-height: 100%; border-radius: 1px; }
.related-cat {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 3px;
}
.related-title {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.3;
  color: var(--ink);
  font-weight: 500;
  transition: color .12s;
}

/* ============ REVISION ============ */
.seg {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2px;
  font-family: var(--font-ui);
}
.seg button {
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-3);
  border-radius: 3px;
}
.seg button.active {
  background: var(--ink);
  color: var(--bg);
}

.rev-progress {
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.rev-progress-track {
  height: 6px;
  background: var(--bg-2);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 8px;
}
.rev-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
  transition: width .3s;
}
.rev-progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-2);
}
.rev-progress-label strong { color: var(--ink); font-weight: 600; }

.rev-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
}
.rev-section-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.rev-cat-block { margin-bottom: 28px; }
.rev-cat-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
.rev-cat-rule { width: 12px; height: 2px; border-radius: 1px; }
.rev-cat-name {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.rev-cat-count {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--ink-4);
}

.rev-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
}
.rev-bullets > li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.rev-bullets > li:first-child { border-top: none; padding-top: 0; }
.rev-bullet {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  width: 100%;
  text-align: left;
  margin-bottom: 6px;
}
.rev-bullet:hover .rev-bullet-title { color: var(--accent-2); }
.rev-bullet-date {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-4);
  min-width: 50px;
  padding-top: 3px;
  text-transform: uppercase;
}
.rev-bullet-title {
  flex: 1;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--ink);
  transition: color .12s;
  letter-spacing: -0.005em;
}
.rev-bullet-check { color: var(--green); flex-shrink: 0; margin-top: 5px; }
.rev-bullet-summary {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0 0 8px 62px;
}
.rev-bullet-concepts {
  display: flex; gap: 4px; flex-wrap: wrap;
  margin-left: 62px;
}
.rev-concept {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--ink-3);
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: 3px;
}

.rev-mcqs-sticky {
  position: sticky;
  top: 76px;
}
.rev-mcqs-sub {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-3);
  margin: -12px 0 16px;
}
.rev-mcq-stack { display: flex; flex-direction: column; gap: 16px; }
.rev-mcq-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
}
.rev-mcq-source {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* ============ EMPTY ============ */
.empty {
  padding: 48px;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--ink-3);
  background: var(--surface);
  border: 1px dashed var(--line-2);
  border-radius: var(--radius-md);
}

.empty-page {
  padding: 96px 24px;
  text-align: center;
  font-family: var(--font-ui);
  color: var(--ink-3);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1280px) {
  .daily-grid { grid-template-columns: 220px minmax(0, 1fr) 240px; }
  .daily-article { padding: 48px 40px 64px; }
  .archive-grid { grid-template-columns: 1fr; }
}

@media (max-width: 980px) {
  .left-rail { display: none; }
  .nav-tabs { display: flex !important; }
  .highlight-grid { grid-template-columns: 1fr; }
  .feed-group { grid-template-columns: 64px 1fr; gap: 16px; }
  .feed-date-num { font-size: 28px; }
  .daily-grid { grid-template-columns: 1fr; }
  .daily-toc, .daily-side { display: none; }
  .daily-article { max-height: none; padding: 32px 24px; }
  .rev-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 38px; }
}

/* ============ ARCHIVE TIMELINE ============ */
.archive-toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.archive-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 480px;
}

.archive-search-icon {
  position: absolute;
  left: 12px;
  color: var(--ink-4);
  pointer-events: none;
}

.archive-search {
  width: 100%;
  padding: 9px 36px 9px 34px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink);
  outline: none;
}

.archive-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-bg);
}

.archive-clear {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink-4);
  display: flex;
  padding: 2px;
}

.archive-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* date group */
.atl-group {
  border-top: 1px solid var(--line);
  padding: 20px 0 8px;
}

.atl-group:first-child { border-top: none; }

.atl-date-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.atl-date-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  background: var(--accent-bg);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.atl-day-num {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-2);
  line-height: 1;
}

.atl-day-mon {
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  line-height: 1.2;
}

.atl-date-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.atl-weekday {
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
}

.atl-count {
  font-family: var(--font-ui);
  font-size: 11.5px;
  color: var(--ink-3);
}

.atl-brief-btn {
  margin-left: auto;
}

/* article lines */
.atl-lines {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-left: 58px;
}

.atl-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px 9px 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  cursor: pointer;
  width: 100%;
  transition: background 80ms, border-color 80ms;
}

.atl-line:hover {
  background: var(--surface-2);
  border-color: var(--line-2);
}

.atl-line.is-revised {
  background: #f0f8f2;
  border-color: #c4ddc9;
}

[data-theme="dark"] .atl-line.is-revised {
  background: #182219;
  border-color: #2a4030;
}

.atl-line-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-4);
  flex-shrink: 0;
  min-width: 20px;
}

.atl-line-rule {
  width: 3px;
  height: 28px;
  border-radius: 2px;
  flex-shrink: 0;
}

.atl-line-cat {
  font-family: var(--font-ui);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 2px;
  flex-shrink: 0;
  white-space: nowrap;
}

.atl-line-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--ink);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.atl-line:hover .atl-line-title {
  color: var(--accent-2);
}

.atl-line-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--ink-3);
}

.atl-line-meta > span {
  display: flex;
  align-items: center;
  gap: 3px;
}

@media (max-width: 680px) {
  .atl-lines { margin-left: 0; }
  .atl-line-cat { display: none; }
  .atl-line-title { font-size: 13px; }
  .archive-toolbar { gap: 10px; }
  .archive-search-wrap { max-width: 100%; }
}

/* loading shimmer for dynamic fetch bar */
@keyframes shimmer {
  0%   { opacity: 1; transform: scaleX(0.3); transform-origin: left; }
  50%  { opacity: 0.8; transform: scaleX(1); transform-origin: left; }
  100% { opacity: 0; transform: scaleX(1); transform-origin: left; }
}