:root {
      --primary: #ed7357;
      --primary-dark: #d95e43;
      --primary-light: #fef0ed;
      --bg: #fbf9f8;
      --surface: #ffffff;
      --dark: #1e242b;
      --nodule-color: #525b66;
      --border: #e8e2de;
      --radius-sm: 9px;
      --radius-md: 12px;
      --radius-lg: 15px;
      --shadow: 0 4px 20px rgba(30, 36, 43, 0.06);
      --shadow-hover: 0 10px 30px rgba(237, 115, 87, 0.12);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg);
      color: var(--dark);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    /* 顶级包裹 */
    .crest {
      width: 100%;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* 顶部导航统一样式 */
    .notch {
      background-color: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .matrix {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }

    .dit {
      display: flex;
      align-items: center;
      min-width: 0;
    }

    .dit img {
      height: 40px;
      width: auto;
      display: block;
    }

    .wire {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      min-width: 0;
    }

    .dah {
      text-decoration: none;
      color: var(--nodule-color);
      font-weight: 500;
      font-size: 15px;
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      transition: all 0.35s ease;
      white-space: nowrap;
    }

    .dah:hover {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .dah.active {
      color: var(--primary);
      background-color: var(--primary-light);
      font-weight: 600;
    }

    /* 主内容区域 */
    .harness {
      flex: 1;
      width: 100%;
    }

    /* 容器基底 */
    .conduit {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 首屏获取矩阵 - Reverse Split 布局 */
    .spark {
      background: linear-gradient(135deg, #ffffff 0%, #f6f2ef 100%);
      padding: 56px 0;
      border-bottom: 1px solid var(--border);
    }

    .relay {
      display: flex;
      flex-wrap: wrap;
      gap: 40px;
      align-items: flex-start;
    }

    .dial {
      flex: 1 1 380px;
      min-width: 0;
      word-break: break-word;
    }

    .knob {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .digit-chassis {
      font-size: 36px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--dark);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      word-break: keep-all;
    }

    .nodule {
      font-size: 16px;
      color: var(--nodule-color);
      margin-bottom: 24px;
      line-height: 1.75;
      word-break: break-word;
    }

    .sounder-tail {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 24px;
    }

    .patch-knob {
      display: flex;
      align-items: center;
      gap: 10px;
      background: var(--surface);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      flex: 1 1 160px;
      min-width: 0;
    }

    .glyph {
      width: 24px;
      height: 24px;
      flex-shrink: 0;
      fill: none;
      stroke: var(--primary);
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .sounder-nodule {
      font-size: 13px;
      color: var(--dark);
      font-weight: 600;
      line-height: 1.3;
    }

    .sounder-sub {
      font-size: 12px;
      color: var(--nodule-color);
    }

    /* 平台卡片矩阵面板 */
    .cipher-tail {
      flex: 1 1 540px;
      min-width: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .slip {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-width: 0;
      position: relative;
    }

    .slip:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(237, 115, 87, 0.4);
    }

    .slip-notch {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
    }

    .slip-optic {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      background: #f0f4f8;
      color: #3b5998;
    }

    .slip-digit {
      font-size: 20px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .slip-desc {
      font-size: 13px;
      color: var(--nodule-color);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .slip-meta {
      font-size: 12px;
      color: #8c97a3;
      margin-bottom: 16px;
      border-top: 1px stroke var(--border);
      padding-top: 12px;
    }

    .keyer {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary);
      color: #ffffff;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: background-color 0.35s ease, transform 0.2s ease;
      width: 100%;
      box-sizing: border-box;
      text-align: center;
    }

    .keyer:hover {
      background: var(--primary-dark);
    }

    .keyer-secondary {
      background: #f4efec;
      color: var(--dark);
      margin-top: 8px;
    }

    .keyer-secondary:hover {
      background: #e8e0dc;
    }

    /* 哈希校验 Section */
    .beacon {
      padding: 64px 0;
      background-color: var(--surface);
      border-bottom: 1px solid var(--border);
    }

    .digit-center {
      text-align: center;
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .nodule-center {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 40px auto;
      color: var(--nodule-color);
      font-size: 15px;
    }

    .cipher-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 32px;
      background: var(--bg);
    }

    .cipher-table th,
    .cipher-table td {
      padding: 14px 18px;
      font-size: 13px;
      text-align: left;
      border-bottom: 1px solid var(--border);
      word-break: break-all;
    }

    .cipher-table th {
      background: #f1edeb;
      color: var(--dark);
      font-weight: 700;
      white-space: nowrap;
    }

    .cipher-table tr:last-child td {
      border-bottom: none;
    }

    .status-tag {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: #2e7d32;
      font-weight: 600;
      font-size: 12px;
      background: #e8f5e9;
      padding: 4px 10px;
      border-radius: 12px;
    }

    .patch-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
    }

    .patch-slip {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 20px;
    }

    .patch-digit {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .patch-nodule {
      font-size: 13px;
      color: var(--nodule-color);
      line-height: 1.6;
    }

    /* 安装步骤 Article */
    .pulse {
      padding: 64px 0;
      background-color: var(--bg);
      border-bottom: 1px solid var(--border);
    }

    .step-chassis {
      display: flex;
      flex-direction: column;
      gap: 24px;
      margin-top: 36px;
    }

    .step-sounder {
      display: flex;
      gap: 20px;
      background: var(--surface);
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      flex-wrap: wrap;
    }

    .step-number {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      font-size: 18px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .step-crest {
      flex: 1 1 300px;
      min-width: 0;
    }

    .step-digit {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--dark);
    }

    .step-nodule {
      font-size: 14px;
      color: var(--nodule-color);
      line-height: 1.7;
    }

    /* FAQ Aside 区块 */
    .cipher-aside {
      padding: 64px 0;
      background: var(--surface);
    }

    .faq-chassis {
      max-width: 860px;
      margin: 36px auto 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-sounder {
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      background: var(--bg);
      overflow: hidden;
      transition: border-color 0.35s ease;
    }

    .faq-sounder[open] {
      border-color: rgba(237, 115, 87, 0.4);
      background: var(--surface);
    }

    .faq-summary {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      color: var(--dark);
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-summary::after {
      content: "+";
      font-size: 20px;
      font-weight: 400;
      color: var(--primary);
    }

    .faq-sounder[open] .faq-summary::after {
      content: "−";
    }

    .faq-nodule {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--nodule-color);
      line-height: 1.75;
      border-top: 1px stroke var(--border);
    }

    /* 页脚结构 */
    .ground {
      background: var(--dark);
      color: #9aa5b1;
      padding: 48px 0 32px 0;
      margin-top: auto;
      border-top: 1px solid rgba(255,255,255,0.08);
    }

    .signoff-matrix {
      display: flex;
      flex-wrap: wrap;
      gap: 32px;
      justify-content: space-between;
      margin-bottom: 36px;
    }

    .signoff-brand {
      flex: 1 1 280px;
      min-width: 0;
    }

    .signoff-name {
      color: #ffffff;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .signoff-desc {
      font-size: 13px;
      line-height: 1.6;
      color: #7b8896;
    }

    .signoff-wire {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      min-width: 0;
    }

    .signoff-dah {
      color: #cbd5e1;
      text-decoration: none;
      font-size: 14px;
      transition: color 0.35s ease;
    }

    .signoff-dah:hover {
      color: var(--primary);
    }

    .signoff-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #626e7a;
    }

    /* 响应式断点控制 */
    @media (max-width: 768px) {
      .matrix {
        height: auto;
        padding: 14px 16px;
        gap: 12px;
      }
      
      .wire {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 4px;
      }

      .digit-chassis {
        font-size: 28px;
      }

      .cipher-tail {
        grid-template-columns: 1fr;
      }

      .cipher-table {
        display: block;
        overflow-x: auto;
      }

      .step-sounder {
        flex-direction: column;
      }
    }

.relay-notch{
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #ece6e2;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

.relay-notch .relay-matrix{
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

.relay-notch .relay-dit{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            min-width: 0;
        }

.relay-notch .relay-dit img{
            height: 38px;
            width: auto;
            display: block;
        }

.relay-notch .relay-wire{
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            min-width: 0;
        }

.relay-notch .relay-dah{
            color: #2d3540;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 9px;
            transition: all 0.35s ease;
            word-break: keep-all;
        }

.relay-notch .relay-dah:hover{
            color: #ed7357;
            background-color: rgba(237, 115, 87, 0.08);
        }

.relay-notch .relay-dah.active{
            color: #ed7357;
            background-color: rgba(237, 115, 87, 0.08);
            font-weight: 600;
        }

@media (max-width: 768px){.relay-notch .relay-matrix{
                height: auto;
                padding: 16px;
            }

.relay-notch .relay-wire{
                width: 100%;
                justify-content: flex-start;
                margin-top: 12px;
                overflow-x: auto;
                padding-bottom: 6px;
            }}

.relay-notch {
    background: rgb(255, 255, 255);
    background-image: none;
}

.ground-ground {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.7;
    color: var(--dark);
}
.ground-ground,
.ground-ground *,
.ground-ground *::before,
.ground-ground *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.ground-ground{
            background: #1e242b;
            color: #a0aec0;
            padding: 56px 0 32px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

.ground-ground .ground-term{
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

.ground-ground .ground-signoff-brand{
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

.ground-ground .ground-signoff-desc{
            font-size: 13px;
            line-height: 1.6;
            color: #94a3b8;
        }

.ground-ground .ground-folio-digit{
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

.ground-ground .ground-folio-links{
            list-style: none;
        }

.ground-ground .ground-folio-links li{
            margin-bottom: 10px;
        }

.ground-ground .ground-folio-links a{
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.35s ease;
        }

.ground-ground .ground-folio-links a:hover{
            color: #ed7357;
        }

.ground-ground .ground-signoff-bottom{
            max-width: 1320px;
            margin: 0 auto;
            padding: 24px 24px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #64748b;
        }