.m-wrap { max-width: 880px; margin: 0 auto; padding: 34px 20px 64px; }
    .m-hero, .m-sec {
      background: var(--card); border-radius: var(--radius); padding: 30px 32px;
      margin-bottom: 18px;
    }
    .m-kicker { display: inline-block; font-size: 12px; letter-spacing: .06em;
      color: var(--blue); background: var(--blue-tint); padding: 5px 12px; border-radius: 999px; }
    .m-hero h1 { margin: 16px 0 10px; font-size: 34px; letter-spacing: -.02em; color: var(--ink); }
    .m-hero p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.8; }
    .m-one { margin-top: 16px !important; padding: 13px 16px; border-left: 3px solid var(--blue);
      background: var(--bg); border-radius: 0 10px 10px 0; color: var(--ink) !important; }
    .m-sec h2 { margin: 0 0 14px; font-size: 21px; color: var(--ink); letter-spacing: -.01em; }
    .m-sec h3 { margin: 22px 0 8px; font-size: 15.5px; color: var(--ink); }
    .m-sec p, .m-sec li { color: var(--muted); font-size: 14px; line-height: 1.85; }
    .m-sec p { margin: 0 0 12px; }
    .m-sec ol, .m-sec ul { margin: 0 0 14px; padding-left: 22px; }
    .m-sec li { margin-bottom: 7px; }
    .m-sec b { color: var(--ink); font-weight: 600; }
    .m-scroll { overflow-x: auto; margin: 14px 0 18px; }
    table.m-table { width: 100%; min-width: 520px; border-collapse: collapse; }
    .m-table th, .m-table td { padding: 10px 12px; text-align: left;
      border-bottom: 1px solid var(--line); font-size: 13.5px; vertical-align: top; }
    .m-table th { color: var(--muted); font-weight: 600; background: var(--bg); }
    .m-table td { color: var(--ink); }
    .m-table tr:last-child td { border-bottom: 0; }
    .m-code { display: block; padding: 11px 14px; margin: 10px 0 16px; border-radius: 10px;
      background: var(--bg); color: var(--ink); font-size: 13px; line-height: 1.7;
      font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
    .m-note { padding: 14px 16px; border-radius: 12px; background: var(--blue-tint);
      color: var(--ink); font-size: 13.5px; line-height: 1.75; margin: 14px 0; }
    .m-warn { padding: 16px 18px; border-radius: 12px; border: 1px solid #f2c98a;
      background: #fff8ea; color: #6b4b12; font-size: 13.5px; line-height: 1.8; margin: 14px 0; }
    .m-warn b { color: #6b4b12; }
    .m-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
    .m-links a { padding: 8px 15px; border: 1px solid var(--line); border-radius: 999px;
      color: var(--blue); font-size: 13px; text-decoration: none; }
    .m-links a:hover { border-color: var(--blue); }
    @media (max-width: 620px) {
      .m-hero, .m-sec { padding: 22px 18px; }
      .m-hero h1 { font-size: 27px; }
      .m-wrap { padding: 22px 12px 48px; }
    }

/* 更新日志时间线（changelog.html 专用） */
.cl-line { margin-top: 6px; }
.cl-item { position: relative; margin-left: 10px; padding: 0 0 26px 26px; border-left: 2px solid var(--line); }
.cl-item:last-child { border-left-color: transparent; padding-bottom: 0; }
.cl-item::before { content: ''; position: absolute; left: -7px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px var(--blue-tint); }
.cl-date { font-size: 12.5px; font-weight: 700; letter-spacing: .04em; color: var(--blue); }
.cl-item h3 { margin: 7px 0 9px; font-size: 17px; color: var(--ink); }
.cl-item p, .cl-item li { color: var(--muted); font-size: 13.8px; line-height: 1.8; }
.cl-item ul { margin: 0; padding-left: 20px; }
.cl-item li { margin-bottom: 5px; }
.cl-tag { display: inline-block; margin-left: 8px; padding: 2px 8px; border-radius: 999px;
  background: var(--blue-tint); color: var(--blue); font-size: 11.5px; font-weight: 600;
  vertical-align: 2px; letter-spacing: 0; }