:root {
      --bg: #f5f5f5;
      --surface: #ffffff;
      --text: #2d2d2d;
      --muted: #666666;
      --accent: #18b8ad;
      --line: #cfcfcf;
      --line-dark: #3a3a3a;
      --radius: 18px;
      --shadow: 0 16px 45px rgba(0, 0, 0, 0.06);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.55;
    }

    .page {
      width: min(100% - 40px, 1180px);
      margin: 0 auto;
      padding: 42px 0 80px;
    }

    .breadcrumbs {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 22px;
      font-size: 13px;
      color: var(--muted);
    }

    .breadcrumbs a {
      color: var(--accent);
      text-decoration: none;
      border-bottom: 1px solid rgba(24, 184, 173, 0.35);
      transition: color 0.2s ease, border-color 0.2s ease;
    }

    .breadcrumbs a:hover {
      color: #0d8f86;
      border-color: currentColor;
    }

    h1 {
      margin: 0 0 34px;
      font-size: clamp(36px, 5vw, 52px);
      line-height: 1.05;
      font-weight: 800;
      letter-spacing: -0.045em;
      color: #2b2b2b;
    }

    .payment-hero {
      background: var(--surface);
      border-radius: var(--radius);
      padding: clamp(12px, 2vw, 22px);
      margin-bottom: 32px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(0, 0, 0, 0.04);
    }

    .payment-image {
      display: block;
      width: 100%;
      height: auto;
      max-height: 430px;
      object-fit: cover;
      border-radius: 14px;
      background: #eeeeee;
    }

    .order-info {
      max-width: 850px;
      margin: 0 0 32px;
      color: var(--text);
      font-size: 18px;
      line-height: 1.6;
    }

    .order-info p {
      margin: 0 0 12px;
    }

    .order-info p:first-child {
      margin-bottom: 16px;
      font-weight: 600;
    }

    .accordion {
      margin-top: 24px;
      border-top: 1px solid var(--line-dark);
    }

    .accordion-item {
      border-bottom: 1px solid var(--line-dark);
    }

    .accordion-button {
      width: 100%;
      min-height: 72px;
      padding: 0;
      border: 0;
      background: transparent;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      cursor: pointer;
      font: inherit;
      color: var(--text);
      text-align: left;
    }

    .accordion-title {
      font-size: 26px;
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: -0.03em;
    }

    .accordion-icon {
      position: relative;
      width: 36px;
      height: 36px;
      flex: 0 0 36px;
      border-radius: 50%;
      transition: background-color 0.2s ease, transform 0.2s ease;
    }

    .accordion-icon::before,
    .accordion-icon::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      width: 20px;
      height: 2px;
      background: #222222;
      border-radius: 10px;
      transform: translate(-50%, -50%);
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .accordion-icon::after {
      transform: translate(-50%, -50%) rotate(90deg);
    }

    .accordion-button:hover .accordion-icon {
      background: #e7e7e7;
    }

    .accordion-button:hover .accordion-title {
      color: #111111;
    }

    .accordion-content {
      display: none;
      max-width: 1120px;
      padding: 0 56px 30px 0;
      color: var(--text);
      font-size: 18px;
      line-height: 1.6;
    }

    .accordion-content p {
      margin: 0 0 16px;
    }

    .accordion-content p:last-child {
      margin-bottom: 0;
    }

    .accordion-item.is-open .accordion-content {
      display: block;
      animation: fadeDown 0.22s ease;
    }

    .accordion-item.is-open .accordion-icon::after {
      opacity: 0;
      transform: translate(-50%, -50%) rotate(0deg);
    }

    .accordion-item.is-open .accordion-icon {
      background: #ededed;
    }

    @keyframes fadeDown {
      from {
        opacity: 0;
        transform: translateY(-4px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media (max-width: 768px) {
      .page {
        width: min(100% - 28px, 1180px);
        padding: 30px 0 56px;
      }

      .breadcrumbs {
        margin-bottom: 18px;
        font-size: 12px;
      }

      h1 {
        margin-bottom: 24px;
        font-size: 36px;
      }

      .payment-hero {
        margin-bottom: 28px;
        border-radius: 14px;
      }

      .payment-image {
        border-radius: 10px;
      }

      .order-info,
      .accordion-content {
        font-size: 16px;
        line-height: 1.55;
      }

      .accordion-button {
        min-height: 66px;
      }

      .accordion-title {
        font-size: 22px;
      }

      .accordion-content {
        padding: 0 0 24px;
      }
    }

    @media (max-width: 480px) {
      .page {
        width: min(100% - 22px, 1180px);
        padding-top: 24px;
      }

      h1 {
        font-size: 34px;
      }

      .accordion-button {
        min-height: 62px;
      }

      .accordion-title {
        font-size: 20px;
      }

      .accordion-icon {
        width: 30px;
        height: 30px;
        flex-basis: 30px;
      }

      .accordion-icon::before,
      .accordion-icon::after {
        width: 17px;
      }
    }