:root {
      --navy: #101d3d;
      --navy-2: #18294f;
      --red: #f21b0b;
      --text: #20283a;
      --muted: #687386;
      --line: #e4e8ef;
      --surface: #ffffff;
      --page: #f4f6fa;
    }
    * { box-sizing: border-box; }
    body {
      margin: 0; background: var(--page); color: var(--text);
      font-family: "Segoe UI", Arial, sans-serif; line-height: 1.5;
    }
    .topbar { background: var(--surface); border-bottom: 1px solid var(--line); }
    .header-inner {
      width: min(1180px, calc(100% - 40px)); min-height: 118px;
      margin: 0 auto; display: flex; align-items: center; gap: 28px; padding: 20px 0;
    }
    .logo { display: block; width: min(330px, 43vw); height: auto; object-fit: contain; }
    .header-divider { height: 58px; width: 1px; background: var(--line); }
    h1 { color: var(--navy); font-size: clamp(1.65rem, 3vw, 2.35rem); margin: 0; letter-spacing: -.04em; }
    .header-subtitle { color: var(--muted); margin: 5px 0 0; font-size: .98rem; }
    main { width: min(1180px, calc(100% - 40px)); margin: 38px auto 54px; }
    .intro { margin-bottom: 22px; }
    .eyebrow { color: var(--red); font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
    h2 { color: var(--navy); font-size: 1.45rem; margin: 5px 0 6px; }
    .intro p { margin: 0; color: var(--muted); }
    .filters {
      display: grid; grid-template-columns: minmax(220px, 1.7fr) minmax(190px, 1fr) minmax(190px, 1fr);
      gap: 14px; background: var(--surface); border: 1px solid var(--line);
      border-radius: 14px; padding: 18px; margin: 24px 0 16px;
      box-shadow: 0 5px 20px rgba(16,29,61,.035);
    }
    .field label { display: block; font-weight: 700; font-size: .84rem; color: var(--navy); margin-bottom: 7px; }
    .field input, .field select {
      width: 100%; min-height: 46px; border: 1px solid #d7dce6; border-radius: 9px;
      padding: 10px 13px; background: #fff; color: var(--text); font: inherit; outline: none;
    }
    .field input:focus, .field select:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(242,27,11,.1); }
    .table-card { overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 7px 24px rgba(16,29,61,.04); }
    .table-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
    .table-top strong { color: var(--navy); }
    #resultCount { color: var(--muted); font-size: .88rem; }
    .table-scroll { overflow-x: auto; }
    table { width: 100%; border-collapse: collapse; min-width: 650px; }
    thead { background: #f8f9fc; }
    th { text-align: left; padding: 14px 20px; font-size: .76rem; color: #5e687b; text-transform: uppercase; letter-spacing: .06em; }
    td { padding: 16px 20px; border-top: 1px solid var(--line); vertical-align: middle; }
    tbody tr:hover { background: #fbfcff; }
    .tutorial-title { color: var(--navy); font-weight: 700; }
    .category { display: inline-block; padding: 5px 10px; border-radius: 999px; background: #eef1f8; color: #27395f; font-size: .78rem; font-weight: 650; white-space: nowrap; }
    .video-link { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; background: var(--red); color: #fff; font-size: .85rem; font-weight: 700; padding: 9px 13px; border-radius: 8px; white-space: nowrap; }
    .video-link:hover { background: #d8190b; }
    .play { width: 0; height: 0; border-top: 5px solid transparent; border-bottom: 5px solid transparent; border-left: 8px solid currentColor; }
    .empty { padding: 42px 20px; text-align: center; color: var(--muted); }
    .empty strong { display: block; color: var(--navy); font-size: 1rem; margin-bottom: 5px; }
    .tip { margin-top: 14px; color: var(--muted); font-size: .84rem; }
    footer { background: var(--navy); color: #e5eaf5; }
    .footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 26px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
    footer p { margin: 0; font-size: .9rem; }
    footer a { color: #fff; font-weight: 750; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.55); padding-bottom: 2px; }
    footer a:hover { color: #ff8178; }
    @media (max-width: 650px) {
      .header-inner { width: min(100% - 28px, 1180px); min-height: 0; gap: 14px; flex-wrap: wrap; }
      .logo { width: 190px; max-width: 58vw; }
      .header-divider { height: 42px; }
      .header-subtitle { font-size: .85rem; }
      main { width: calc(100% - 28px); margin-top: 28px; }
      .filters { grid-template-columns: 1fr; padding: 14px; }
      .table-top { padding: 14px; }
      .footer-inner { width: calc(100% - 28px); }
    }
.muted-dash { color: var(--muted); font-size: .88rem; }
.tutorial-obs { margin-top: 4px; color: var(--muted); font-size: .86rem; font-weight: 400; white-space: pre-line; max-width: 560px; }