:root {
      --cyan-primary: #6adaee;
      --cyan-dark: #0299b8;
      --orange-brand: #ff7139;
      --orange-hover: #ff9400;
      --surface-light: #f8fafc;
      --surface-card: #ffffff;
      --slate-dark: #0f172a;
      --slate-navy: #1e293b;
      --slate-body: #334155;
      --slate-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-base: 20px;
      --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 12px 32px rgba(2, 153, 184, 0.12);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--surface-light);
      color: var(--slate-body);
      line-height: 1.7;
      word-break: break-word;
      overflow-wrap: break-word;
    }

    /* 顶部导航 Shell */
    .scout-sheath {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }
    .scout-covert {
      max-width: 1320px;
      margin: 0 auto;
      padding: 1rem 1.5rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
    }
    .crest {
      display: flex;
      align-items: center;
      flex-shrink: 0;
    }
    .crest img {
      height: 40px;
      width: auto;
      display: block;
    }
    .scout-litter {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.5rem;
    }
    .trail-howl {
      text-decoration: none;
      color: var(--slate-body);
      font-weight: 600;
      font-size: 0.98rem;
      padding: 0.5rem 0.8rem;
      border-radius: 10px;
      transition: all 0.25s ease;
    }
    .trail-howl:hover {
      color: var(--cyan-dark);
      background-color: rgba(106, 218, 238, 0.12);
    }
    .trail-howl.active {
      color: var(--slate-dark);
      background-color: var(--cyan-primary);
      box-shadow: 0 4px 12px rgba(106, 218, 238, 0.3);
    }

    /* 主内容版心 */
    main {
      max-width: 1320px;
      margin: 0 auto;
      padding: 2rem 1.5rem 4rem;
    }

    /* 1. Hero Block (intro) */
    .blaze-sheath {
      background: linear-gradient(145deg, var(--slate-dark) 0%, var(--slate-navy) 100%);
      border-radius: var(--radius-base);
      padding: 3.5rem 3rem;
      color: #ffffff;
      margin-bottom: 2.5rem;
      box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
      position: relative;
      overflow: hidden;
    }
    .blaze-covert {
      display: flex;
      flex-wrap: wrap;
      gap: 2.5rem;
      align-items: center;
    }
    .blaze-fur {
      flex: 1 1 500px;
      min-width: 0;
    }
    .blaze-trace {
      font-size: 2.5rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.25rem;
      color: #ffffff;
      word-break: break-word;
    }
    .blaze-trace span {
      color: var(--cyan-primary);
    }
    .blaze-glyph {
      font-size: 1.125rem;
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 2rem;
    }
    .blaze-cluster {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .blaze-pounce {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.6rem;
      padding: 0.9rem 2rem;
      background: linear-gradient(135deg, var(--orange-brand), var(--orange-hover));
      color: #ffffff;
      font-weight: 700;
      font-size: 1rem;
      text-decoration: none;
      border-radius: 14px;
      box-shadow: 0 8px 24px rgba(255, 113, 57, 0.35);
      transition: all 0.25s ease;
      border: none;
      cursor: pointer;
    }
    .blaze-pounce:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(255, 113, 57, 0.45);
    }
    .blaze-glint {
      flex: 1 1 420px;
      min-width: 0;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 18px;
      padding: 1.8rem;
      backdrop-filter: blur(10px);
    }
    .ember-nest {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .ember-cub {
      flex: 1 1 180px;
      min-width: 0;
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(106, 218, 238, 0.25);
      border-radius: 14px;
      padding: 1.2rem;
      transition: all 0.25s ease;
    }
    .ember-cub:hover {
      border-color: var(--cyan-primary);
      transform: translateY(-3px);
    }
    .ember-runes {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(106, 218, 238, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 0.8rem;
    }
    .ember-runes svg {
      width: 22px;
      height: 22px;
      fill: var(--cyan-primary);
    }
    .ember-trace {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 0.3rem;
    }
    .ember-glyph {
      font-size: 0.85rem;
      color: #94a3b8;
      line-height: 1.5;
    }

    /* 2. Security Encryption Block (acquire) */
    .den-sheath {
      background: var(--surface-card);
      border-radius: var(--radius-base);
      padding: 3rem 2.5rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 2.5rem;
    }
    .den-fur {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 3rem;
    }
    .den-trace {
      font-size: 2rem;
      font-weight: 800;
      color: var(--slate-dark);
      margin-bottom: 1rem;
    }
    .den-glyph {
      font-size: 1.05rem;
      color: var(--slate-muted);
    }
    .pelt-cluster {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
    }
    .pelt-nest {
      flex: 1 1 300px;
      min-width: 0;
      background: var(--surface-light);
      border-radius: 16px;
      padding: 2rem;
      border: 1px solid #e2e8f0;
      transition: all 0.25s ease;
      position: relative;
    }
    .pelt-nest:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--cyan-primary);
      transform: translateY(-4px);
    }
    .pelt-runes {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(106, 218, 238, 0.2), rgba(2, 153, 184, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
    }
    .pelt-runes svg {
      width: 26px;
      height: 26px;
      fill: var(--cyan-dark);
    }
    .pelt-trace {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 0.6rem;
    }
    .pelt-glyph {
      font-size: 0.95rem;
      color: var(--slate-body);
      line-height: 1.6;
    }

    /* 3. Tab Push & Cross-device Block (capability) */
    .flare-sheath {
      background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
      border-radius: var(--radius-base);
      padding: 3rem 2.5rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 2.5rem;
    }
    .flare-fur {
      margin-bottom: 2.5rem;
    }
    .flare-trace {
      font-size: 2rem;
      font-weight: 800;
      color: var(--slate-dark);
      margin-bottom: 0.8rem;
    }
    .flare-glyph {
      font-size: 1.05rem;
      color: var(--slate-muted);
      max-width: 850px;
    }
    .nest-cluster {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      align-items: stretch;
    }
    .nest-cub {
      flex: 1 1 360px;
      min-width: 0;
      background: #ffffff;
      border-radius: 18px;
      padding: 2rem;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .nest-cub:hover {
      border-color: var(--cyan-primary);
      box-shadow: 0 10px 25px rgba(2, 153, 184, 0.1);
    }
    .nest-runes {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: rgba(255, 113, 57, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
    }
    .nest-runes svg {
      width: 28px;
      height: 28px;
      fill: var(--orange-brand);
    }
    .nest-trace {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 0.7rem;
    }
    .nest-glyph {
      font-size: 0.95rem;
      color: var(--slate-body);
      line-height: 1.65;
    }

    /* 4. Setup Guide Block (steps) */
    .beacon-sheath {
      background: var(--slate-dark);
      border-radius: var(--radius-base);
      padding: 3.5rem 2.5rem;
      color: #ffffff;
      margin-bottom: 2rem;
      box-shadow: 0 12px 36px rgba(15, 23, 42, 0.2);
    }
    .beacon-fur {
      text-align: center;
      max-width: 750px;
      margin: 0 auto 3rem;
    }
    .beacon-trace {
      font-size: 2rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 1rem;
    }
    .beacon-glyph {
      font-size: 1.05rem;
      color: #94a3b8;
    }
    .covert-stripe {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      justify-content: center;
    }
    .ember-pounce {
      flex: 1 1 300px;
      min-width: 0;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 18px;
      padding: 2rem;
      position: relative;
      transition: all 0.25s ease;
    }
    .ember-pounce:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--cyan-primary);
      transform: translateY(-3px);
    }
    .spark-ignite {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--cyan-primary);
      color: var(--slate-dark);
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
    }

    /* 页脚 Shell */
    .burrow-sheath {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 3.5rem 1.5rem 2rem;
      margin-top: 2rem;
    }
    .burrow-covert {
      max-width: 1320px;
      margin: 0 auto;
      display: flex;
      flex-wrap: wrap;
      gap: 2.5rem;
      justify-content: space-between;
    }
    .hearth-flint {
      flex: 1 1 300px;
      min-width: 0;
    }
    .hearth-trace {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--slate-dark);
      margin-bottom: 0.8rem;
    }
    .hearth-glyph {
      font-size: 0.95rem;
      color: var(--slate-muted);
      line-height: 1.6;
      max-width: 360px;
    }
    .cinder-stripe {
      display: flex;
      flex-wrap: wrap;
      gap: 3rem;
      flex: 2 1 500px;
      min-width: 0;
      justify-content: flex-end;
    }
    .hearth-howl {
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
      min-width: 130px;
    }
    .hearth-howl h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--slate-dark);
      margin-bottom: 0.4rem;
    }
    .hearth-howl a {
      text-decoration: none;
      color: var(--slate-muted);
      font-size: 0.9rem;
      transition: color 0.25s ease;
    }
    .hearth-howl a:hover {
      color: var(--cyan-dark);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .blaze-sheath {
        padding: 2.5rem 1.8rem;
      }
      .blaze-trace {
        font-size: 2.1rem;
      }
      .cinder-stripe {
        justify-content: flex-start;
      }
    }
    @media (max-width: 768px) {
      .scout-covert {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
      }
      .scout-litter {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 0.4rem;
      }
      .blaze-trace {
        font-size: 1.8rem;
      }
      .den-sheath, .flare-sheath, .beacon-sheath {
        padding: 2rem 1.25rem;
      }
      .den-trace, .flare-trace, .beacon-trace {
        font-size: 1.5rem;
      }
    }

.trail-scout-sheath{
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #e2e8f0;
        }

.trail-scout-sheath .trail-scout-covert{
            max-width: 1320px;
            margin: 0 auto;
            padding: 0.8rem 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

.trail-scout-sheath .trail-crest{
            display: flex;
            align-items: center;
            min-width: 0;
        }

.trail-scout-sheath .trail-crest img{
            height: 42px;
            width: auto;
            display: block;
        }

.trail-scout-sheath .trail-scout-litter{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
        }

.trail-scout-sheath .trail-trail-howl{
            text-decoration: none;
            color: #334155;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.6rem 1rem;
            border-radius: 12px;
            transition: all 0.25s ease;
            min-width: 0;
        }

.trail-scout-sheath .trail-trail-howl:hover{
            color: #0299b8;
            background: rgba(106, 218, 238, 0.12);
        }

.trail-scout-sheath .trail-trail-howl.active{
            color: #ffffff;
            background: linear-gradient(135deg, #ff7139, #ff9400);
            box-shadow: 0 4px 12px rgba(255, 113, 57, 0.25);
        }

@media (max-width: 768px){.trail-scout-sheath .trail-scout-covert{
                flex-direction: column;
                gap: 1rem;
            }}

.trail-scout-sheath {
    background: rgb(255, 255, 255);
    background-image: none;
}

.burrow-burrow-sheath {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    word-break: keep-all;
    color: var(--slate-body);
}
.burrow-burrow-sheath,
.burrow-burrow-sheath *,
.burrow-burrow-sheath *::before,
.burrow-burrow-sheath *::after {
    box-sizing: border-box;
}

.burrow-burrow-sheath nav,
.burrow-burrow-sheath div,
.burrow-burrow-sheath section,
.burrow-burrow-sheath article,
.burrow-burrow-sheath aside,
.burrow-burrow-sheath p,
.burrow-burrow-sheath h1,
.burrow-burrow-sheath h2,
.burrow-burrow-sheath h3,
.burrow-burrow-sheath h4,
.burrow-burrow-sheath h5,
.burrow-burrow-sheath h6,
.burrow-burrow-sheath a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.burrow-burrow-sheath p,
.burrow-burrow-sheath h1,
.burrow-burrow-sheath h2,
.burrow-burrow-sheath h3,
.burrow-burrow-sheath h4,
.burrow-burrow-sheath h5,
.burrow-burrow-sheath h6 {
    text-decoration: none;
}

.burrow-burrow-sheath img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.burrow-burrow-sheath {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.burrow-burrow-sheath a,
.burrow-burrow-sheath a:hover,
.burrow-burrow-sheath a:focus,
.burrow-burrow-sheath a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.burrow-burrow-sheath{
            background: #0f172a;
            color: #94a3b8;
            padding: 3.5rem 1.5rem 2.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

.burrow-burrow-sheath .burrow-burrow-covert{
            max-width: 1320px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            justify-content: space-between;
        }

.burrow-burrow-sheath .burrow-burrow-brand{
            flex: 1 1 300px;
            min-width: 0;
        }

.burrow-burrow-sheath .burrow-burrow-brand-trace{
            font-size: 1.5rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.8rem;
            letter-spacing: -0.5px;
        }

.burrow-burrow-sheath .burrow-burrow-brand-desc{
            font-size: 0.9rem;
            line-height: 1.6;
        }

.burrow-burrow-sheath .burrow-burrow-links{
            flex: 2 1 600px;
            min-width: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-around;
        }

.burrow-burrow-sheath .burrow-burrow-column{
            min-width: 140px;
        }

.burrow-burrow-sheath .burrow-burrow-head{
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
        }

.burrow-burrow-sheath .burrow-burrow-litter{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

.burrow-burrow-sheath .burrow-burrow-howl{
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: all 0.25s ease;
        }

.burrow-burrow-sheath .burrow-burrow-howl:hover{
            color: #6adaee;
        }

.burrow-burrow-sheath .burrow-burrow-bottom{
            max-width: 1320px;
            margin: 2.5rem auto 0;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.85rem;
        }