:root {
      --bg: #f7f8f3;
      --sidebar: linear-gradient(180deg, #ffffff 0%, #f3f6ee 100%);
      --surface: #ffffff;
      --surface-2: #f9fbf6;
      --text-0: #162018;
      --text-1: #3e4a40;
      --text-2: #748074;
      --border: #dde5d9;
      --border-strong: #c8d4c6;
      --green: #1f7a43;
      --green-soft: #e7f5eb;
      --cyan: #0f7f91;
      --cyan-soft: #e7f4f6;
      --amber: #9b6a1f;
      --amber-soft: #fff3dc;
      --rose: #9b5149;
      --rose-soft: #fae9e6;
      --shadow: 0 18px 46px rgba(40, 54, 43, .08);
      --shadow-soft: 0 10px 26px rgba(40, 54, 43, .06);
      --nav-w: 174px;
      --time-w: 72px;
      font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    [data-theme="dark"] {
      --bg: #090f1a;
      --sidebar: linear-gradient(180deg, #111827 0%, #0b1220 100%);
      --surface: #111827;
      --surface-2: #162033;
      --text-0: #edf7f0;
      --text-1: #c8d7cd;
      --text-2: #8da097;
      --border: rgba(226, 238, 229, .12);
      --border-strong: rgba(226, 238, 229, .24);
      --green-soft: rgba(46, 160, 87, .16);
      --cyan-soft: rgba(15, 127, 145, .16);
      --amber-soft: rgba(155, 106, 31, .18);
      --rose-soft: rgba(155, 81, 73, .18);
      --shadow: 0 24px 60px rgba(0, 0, 0, .25);
      --shadow-soft: 0 12px 32px rgba(0, 0, 0, .18);
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      background:
        radial-gradient(circle at 72% 3%, rgba(31, 122, 67, .10), transparent 28%),
        radial-gradient(circle at 18% 18%, rgba(15, 127, 145, .08), transparent 24%),
        var(--bg);
      color: var(--text-0);
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, textarea { font: inherit; }

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

    .sidebar {
      position: sticky;
      top: 0;
      height: 100vh;
      padding: 18px 12px 14px;
      border-right: 1px solid var(--border);
      background: var(--sidebar);
      display: grid;
      grid-template-rows: auto 1fr auto;
      gap: 16px;
      overflow: hidden;
    }

    .brand-card {
      display: grid;
      place-items: center;
      gap: 4px;
      min-height: 78px;
      border-radius: 18px;
      border: 1px solid var(--border);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 4px;
      font-weight: 850;
      letter-spacing: .02em;
      font-size: 20px;
    }
    .brand-logo span:nth-child(2) { color: var(--green); }
    .brand-sub { font-size: 11px; color: var(--text-2); }

    .side-nav {
      display: grid;
      gap: 4px;
      align-content: start;
      overflow-y: auto;
      padding-right: 2px;
    }
    .side-link {
      border: 0;
      background: transparent;
      color: var(--text-1);
      display: grid;
      grid-template-columns: 22px 1fr;
      align-items: center;
      gap: 8px;
      width: 100%;
      min-height: 40px;
      padding: 8px 10px;
      border-radius: 12px;
      cursor: pointer;
      text-align: left;
      transition: background .16s ease, color .16s ease, transform .16s ease;
    }
    .side-link:hover { background: var(--surface); transform: translateX(1px); }
    .side-link.active {
      color: var(--green);
      background: linear-gradient(180deg, var(--green-soft), rgba(255, 255, 255, .7));
      border: 1px solid rgba(31, 122, 67, .18);
      font-weight: 760;
    }
    .side-foot {
      display: grid;
      gap: 8px;
      font-size: 12px;
      color: var(--text-2);
    }
    .theme-toggle {
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-1);
      border-radius: 999px;
      padding: 8px 10px;
      cursor: pointer;
    }

    .main {
      min-width: 0;
      padding: 24px 28px 72px;
    }
    .page { display: none; max-width: 1180px; margin: 0 auto; }
    .page.active { display: block; }

    .page-header {
      position: relative;
      overflow: hidden;
      padding: 22px 24px;
      border-radius: 20px;
      border: 1px solid var(--border);
      background:
        radial-gradient(circle at 90% 8%, rgba(31, 122, 67, .10), transparent 26%),
        linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.62));
      box-shadow: var(--shadow-soft);
      margin-bottom: 18px;
    }
    [data-theme="dark"] .page-header {
      background: radial-gradient(circle at 90% 8%, rgba(31,122,67,.18), transparent 26%), linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
    }
    .title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
    h1, h2, h3, p { margin-top: 0; }
    .page-title { font-size: 28px; line-height: 1.18; margin-bottom: 8px; letter-spacing: -.02em; }
    .muted { color: var(--text-2); }
    .header-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
    .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      min-height: 28px;
      padding: 4px 10px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-1);
      font-size: 12px;
      white-space: nowrap;
    }
    .pill.green { color: var(--green); background: var(--green-soft); border-color: rgba(31,122,67,.25); }
    .pill.cyan { color: var(--cyan); background: var(--cyan-soft); border-color: rgba(15,127,145,.20); }
    .pill.amber { color: var(--amber); background: var(--amber-soft); border-color: rgba(155,106,31,.25); }

    .toolbar {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      margin-top: 18px;
    }
    .segmented {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }
    .seg {
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-1);
      padding: 7px 11px;
      border-radius: 999px;
      cursor: pointer;
      font-size: 13px;
    }
    .seg.active { background: var(--green); color: #fff; border-color: var(--green); }
    .archive-toolbar {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      margin-top: 18px;
      align-items: start;
    }
    .day-tabs {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }
    .day-tab {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-1);
      border-radius: 999px;
      padding: 7px 11px;
      cursor: pointer;
      font-size: 13px;
    }
    .day-tab small {
      color: var(--text-2);
      font-size: 11px;
      font-variant-numeric: tabular-nums;
    }
    .day-tab.active {
      background: var(--green);
      border-color: var(--green);
      color: #fff;
    }
    .day-tab.active small { color: rgba(255,255,255,.78); }
    .search {
      width: min(280px, 100%);
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-0);
      border-radius: 999px;
      padding: 8px 12px;
      outline: none;
    }
    .freshness-strip {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      margin-top: 14px;
    }
    .freshness-item {
      border: 1px solid var(--border);
      background: var(--surface-2);
      border-radius: 12px;
      padding: 9px 11px;
      min-width: 0;
    }
    .freshness-item span {
      display: block;
      color: var(--text-2);
      font-size: 11px;
      line-height: 1.4;
    }
    .freshness-item b {
      display: block;
      color: var(--text-0);
      font-size: 13px;
      line-height: 1.45;
      margin-top: 2px;
    }
    .empty-state {
      border: 1px dashed var(--border-strong);
      background: linear-gradient(180deg, var(--surface), var(--surface-2));
      border-radius: 18px;
      padding: 24px;
      color: var(--text-1);
      box-shadow: var(--shadow-soft);
    }
    .empty-title {
      font-size: 18px;
      font-weight: 760;
      color: var(--text-0);
      margin-bottom: 8px;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 10px;
      margin: 18px 0;
    }
    .metric {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 13px;
      box-shadow: var(--shadow-soft);
    }
    .metric-label { color: var(--text-2); font-size: 12px; }
    .metric-value { font-size: 26px; font-weight: 850; line-height: 1.2; }
    .metric-note { color: var(--text-2); font-size: 11px; }

    .timeline {
      display: grid;
      gap: 8px;
      margin-top: 16px;
    }
    .timeline-day-head {
      display: grid;
      grid-template-columns: var(--time-w) 1fr;
      gap: 18px;
      align-items: center;
      color: var(--text-2);
      margin: 20px 0 6px;
      font-weight: 760;
    }
    .timeline-item {
      display: grid;
      grid-template-columns: var(--time-w) 20px minmax(0, 1fr);
      gap: 0;
      align-items: start;
      padding-bottom: 12px;
    }
    .timeline-time {
      padding-top: 17px;
      color: var(--text-1);
      font-size: 17px;
      font-weight: 820;
      font-variant-numeric: tabular-nums;
    }
    .timeline-rail {
      position: relative;
      min-height: 100%;
    }
    .timeline-rail::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: -12px;
      left: 9px;
      width: 1px;
      background: var(--border);
    }
    .dot {
      position: relative;
      z-index: 1;
      width: 9px;
      height: 9px;
      margin: 23px 0 0 5px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px var(--green-soft);
    }
    .timeline-card {
      min-width: 0;
      padding: 15px 16px;
      border-radius: 16px;
      border: 1px solid var(--border);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
    }
    .timeline-card:hover { transform: translateY(-1px); border-color: var(--border-strong); box-shadow: var(--shadow); }
    .timeline-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 9px;
    }
    .source { color: var(--text-2); font-size: 12px; }
    .event-time {
      color: var(--text-2);
      font-size: 11px;
      margin-top: 2px;
      font-variant-numeric: tabular-nums;
    }
    .score-wrap { display: flex; gap: 8px; align-items: center; }
    .selected-badge {
      color: var(--amber);
      background: var(--amber-soft);
      border: 1px solid rgba(155,106,31,.28);
      border-radius: 999px;
      padding: 3px 8px;
      font-size: 11px;
      font-weight: 800;
    }
    .score {
      color: var(--cyan);
      background: var(--cyan-soft);
      border: 1px solid rgba(15,127,145,.24);
      border-radius: 999px;
      padding: 3px 8px;
      font-size: 11px;
      font-weight: 850;
      font-variant-numeric: tabular-nums;
    }
    .timeline-title {
      font-size: 17px;
      font-weight: 780;
      line-height: 1.42;
      margin-bottom: 8px;
    }
    .timeline-summary {
      color: var(--text-1);
      font-size: 14px;
      margin-bottom: 10px;
    }
    .tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
    .tag {
      font-size: 12px;
      color: var(--text-1);
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 3px 7px;
    }
    .reason {
      margin-top: 11px;
      padding-top: 11px;
      border-top: 1px solid var(--border);
      color: var(--text-1);
      font-size: 13px;
    }
    .reason b { color: var(--green); }
    .story-grid {
      display: grid;
      grid-template-columns: 1.14fr .86fr;
      gap: 10px;
      margin-top: 10px;
    }
    .story-block {
      border: 1px solid var(--border);
      background: var(--surface-2);
      border-radius: 12px;
      padding: 12px;
    }
    .story-block h4 { margin: 0 0 7px; font-size: 13px; }
    .story-block p, .story-block ul { margin: 0; font-size: 13px; color: var(--text-1); }
    .story-block ul { padding-left: 18px; }

    .daily-shell {
      background: #0b0f1a;
      color: #e7eef6;
      border-radius: 22px;
      padding: 44px 56px;
      box-shadow: var(--shadow);
      margin-top: 18px;
      font-family: "IBM Plex Sans", "Avenir Next", "PingFang SC", sans-serif;
    }
    .daily-kicker {
      color: #34d399;
      letter-spacing: .18em;
      font-size: 11px;
      text-transform: uppercase;
      margin-bottom: 28px;
    }
    .daily-title {
      font-size: clamp(44px, 8vw, 84px);
      line-height: .96;
      margin: 0 0 24px;
      letter-spacing: -.05em;
    }
    .daily-title span { color: #34d399; }
    .daily-date { color: #94a3b8; margin-bottom: 54px; }
    .daily-section {
      border-top: 1px solid rgba(231,238,246,.12);
      padding-top: 28px;
      margin-top: 28px;
      display: grid;
      grid-template-columns: 84px 1fr;
      gap: 30px;
    }
    .daily-num { color: #34d399; font-size: 36px; font-weight: 850; line-height: 1; }
    .daily-section h2 { margin-bottom: 20px; }
    .daily-story {
      padding-bottom: 22px;
      margin-bottom: 22px;
      border-bottom: 1px solid rgba(231,238,246,.08);
    }
    .daily-story h3 { margin-bottom: 7px; font-size: 18px; }
    .daily-story p { color: #c7d0dc; margin-bottom: 0; }

    .two-col {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 16px;
      margin-top: 18px;
    }
    .panel {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 18px;
      padding: 18px;
      box-shadow: var(--shadow-soft);
    }
    .panel h2 { font-size: 18px; margin-bottom: 14px; }
    .source-group { margin-bottom: 16px; }
    .source-group-title {
      display: flex;
      justify-content: space-between;
      color: var(--text-1);
      font-weight: 800;
      margin-bottom: 8px;
    }
    .source-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .source-chip {
      border: 1px solid var(--border);
      background: var(--surface-2);
      color: var(--text-1);
      border-radius: 10px;
      padding: 7px 9px;
      font-size: 12px;
    }
    .funnel-row {
      display: grid;
      grid-template-columns: 82px 1fr 44px;
      gap: 10px;
      align-items: center;
      margin: 11px 0;
      font-size: 12px;
    }
    .bar { height: 10px; border-radius: 999px; background: var(--green-soft); overflow: hidden; }
    .bar span { display: block; height: 100%; border-radius: 999px; background: var(--green); }
    .form-grid { display: grid; gap: 12px; }
    .field {
      width: 100%;
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--text-0);
      border-radius: 12px;
      padding: 10px 12px;
      outline: none;
    }
    textarea.field { min-height: 120px; resize: vertical; }
    .btn {
      border: 0;
      background: var(--green);
      color: white;
      border-radius: 999px;
      padding: 10px 14px;
      cursor: pointer;
      font-weight: 760;
    }
    .about-copy {
      max-width: 720px;
      font-size: 18px;
      color: var(--text-1);
    }

    @media (max-width: 900px) {
      :root { --nav-w: 0px; --time-w: 56px; }
      .app-shell { display: block; }
      .sidebar { position: relative; width: 100%; height: auto; grid-template-rows: auto auto; }
      .side-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .side-foot { display: none; }
      .main { padding: 16px 12px 48px; }
      .title-row, .timeline-head, .two-col, .story-grid { grid-template-columns: 1fr; display: grid; }
      .toolbar, .archive-toolbar, .metric-grid { grid-template-columns: 1fr; }
      .daily-shell { padding: 28px 20px; }
      .daily-section { grid-template-columns: 1fr; gap: 10px; }
    }