:root{
    --ink:#122436;
    --ink-soft:#3c5163;
    --paper:#eef2f2;
    --paper-card:#ffffff;
    --line:#c9d3d2;
    --delft:#1e3a5f;
    --delft-deep:#0f2340;
    --gold:#c98a1f;
    --wine:#8c2a3a;
    --teal:#1f6f78;
    --good:#e5f2ee;
    --good-text:#1f6f4a;
    --ok:#faf3e0;
    --ok-text:#8a5f10;
    --bad:#f7f0f0;
    --bad-text:#8a6a6a;
    --radius:3px;
  }
  *{box-sizing:border-box;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:system-ui,"Microsoft YaHei",sans-serif;
    line-height:1.5;
  }
  h1,h2,.serif{font-family:Georgia,"Microsoft YaHei",serif;}
  .wrap{max-width:1040px;margin:0 auto;padding:40px 24px 80px;}
  header.page-head{border-bottom:1px solid var(--line);padding-bottom:28px;margin-bottom:32px;}
  header.page-head h1{
    font-size:clamp(28px,4vw,40px);font-weight:700;margin:0 0 10px;
    color:var(--delft-deep);letter-spacing:-0.01em;
  }
  header.page-head p{max-width:600px;color:var(--ink-soft);font-size:15px;margin:0;}

  .clocks{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-bottom:28px;
  }
  @media (max-width:640px){.clocks{grid-template-columns:1fr;}}
  .clock-card{
    background:var(--paper-card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 24px;
  }
  .clock-card .city{font-size:13px;color:var(--ink-soft);margin-bottom:6px;}
  .clock-card .time{
    font-family:Georgia,"Microsoft YaHei",serif;
    font-size:38px;
    font-weight:700;
    color:var(--delft-deep);
    font-variant-numeric:tabular-nums;
  }
  .clock-card .date{font-size:12.5px;color:var(--ink-soft);margin-top:4px;}
  .clock-card.cn .time{color:var(--wine);}

  .controls{
    display:flex;
    align-items:center;
    gap:16px;
    flex-wrap:wrap;
    background:var(--paper-card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:16px 20px;
    margin-bottom:8px;
  }
  .controls label{font-size:13px;color:var(--ink-soft);}
  .controls input[type=date]{
    font-family:inherit;
    font-size:14px;
    padding:6px 8px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    color:var(--ink);
  }
  .offset-badge{
    font-size:13px;
    color:var(--delft-deep);
    background:#eaf0f6;
    padding:5px 10px;
    border-radius:var(--radius);
  }

  .insight{
    background:#fbf3f0;
    border:1px solid #e6c9c9;
    border-radius:var(--radius);
    padding:14px 16px;
    font-size:13.5px;
    color:#5c2430;
    margin:20px 0;
  }
  .insight strong{color:var(--wine);}

  table{
    width:100%;
    border-collapse:collapse;
    background:var(--paper-card);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
  }
  th, td{
    padding:9px 14px;
    text-align:left;
    font-size:13.5px;
    border-bottom:1px solid var(--line);
  }
  th{
    font-weight:600;
    color:var(--ink-soft);
    font-size:12.5px;
    background:#f5f7f7;
  }
  tr:last-child td{border-bottom:none;}
  td.time-val{font-variant-numeric:tabular-nums;font-weight:500;}
  .row-good{background:var(--good);}
  .row-good td.time-val{color:var(--good-text);}
  .row-ok{background:var(--ok);}
  .row-ok td.time-val{color:var(--ok-text);}
  .badge{
    display:inline-block;
    font-size:11px;
    padding:1px 7px;
    border-radius:2px;
  }
  .badge.good{background:#d6ece3;color:var(--good-text);}
  .badge.ok{background:#f2e6c2;color:var(--ok-text);}
  .badge.bad{background:#eee2e2;color:var(--bad-text);}
  .daytag{font-size:11px;color:var(--ink-soft);margin-left:4px;}

  .note{
    margin-top:24px;
    font-size:12.5px;
    color:var(--ink-soft);
    border-top:1px solid var(--line);
    padding-top:16px;
  }

  .site-nav{background:var(--delft-deep);border-bottom:1px solid #0a1c30;}
  .site-nav-inner{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;}
  .site-nav .brand{font-family:Georgia,"Microsoft YaHei",serif;font-size:17px;font-weight:700;color:#fff;text-decoration:none;letter-spacing:-0.01em;}
  .site-nav nav{display:flex;gap:4px;flex-wrap:wrap;}
  .site-nav nav a{color:#cdd9e3;text-decoration:none;font-size:13.5px;padding:7px 12px;border-radius:var(--radius);}
  .site-nav nav a:hover{background:rgba(255,255,255,0.08);color:#fff;}
  .site-nav nav a.current{background:rgba(255,255,255,0.14);color:#fff;font-weight:600;}