.fireworks-feature,
      .fireworks-feature * {
          box-sizing: border-box;
      }

      .fireworks-feature {
          width: 100%;
          margin: 58px 0 76px;
          color: #333333;
          font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
      }

      .fireworks-heading {
          display: flex;
          align-items: center;
          justify-content: space-between;
          gap: 20px;

          margin: 20px 0 25px;
          padding: 0 0 2px 10px;

          border-left: 8px solid #00A5D5;
          border-bottom: 1px solid #00A5D5;
      }

      .fireworks-heading h2 {
          margin: 0;
          color: #00A5D5;
          font-size: 20px;
          font-weight: normal;
          line-height: 140%;
      }


      .fireworks-heading p {
          margin: 0;
          color: #777777;
          font-size: 13px;
          line-height: 1.7;
          text-align: right;
      }

      .fireworks-stage {
          position: relative;
          width: 100%;
          aspect-ratio: 16 / 9;
          max-height: 520px;
          overflow: hidden;
          background: #061923;
          box-shadow: 0 12px 32px rgba(0, 48, 67, 0.20);
      }

      .fireworks-stage video {
          position: absolute;
          inset: 0;
          display: block;
          width: 100%;
          height: 100%;
          object-fit: cover;
          object-position: center;
          background: #061923;
      }

      .fireworks-stage::after {
          content: "";
          position: absolute;
          inset: 0;
          pointer-events: none;
          background:
              linear-gradient(to top, rgba(1, 12, 18, 0.78) 0%, rgba(1, 12, 18, 0.12) 48%, rgba(1, 12, 18, 0.20) 100%),
              linear-gradient(to right, rgba(1, 12, 18, 0.24) 0%, transparent 55%);
      }

      .fireworks-copy {
          position: absolute;
          right: 40px;
          bottom: 14px;
          left: 40px;
          z-index: 3;

          color: #ffffff;
          text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);
      }

      .fireworks-copy-kicker {
          display: inline-block;
          margin-bottom: 9px;
          padding: 5px 11px;
          border: 1px solid rgba(255, 255, 255, 0.72);
          background: rgba(0, 0, 0, 0.28);
          font-size: 11px;
          font-weight: bold;
          letter-spacing: 0.15em;
      }

      .fireworks-copy strong {
          display: block;
          margin: 0;
          font-size: clamp(18px, 2.2vw, 28px);
          line-height: 1.45;
          letter-spacing: 0.04em;
      }

      .fireworks-copy span {
          display: block;
          margin-top: 8px;
          font-size: clamp(12px, 1.4vw, 16px);
          line-height: 1.7;
          letter-spacing: 0.05em;
      }

      .fireworks-controls {
          position: absolute;
          top: 18px;
          right: 18px;
          z-index: 3;
          display: flex;
          gap: 8px;
      }

      .fireworks-control {
          display: inline-flex;
          align-items: center;
          justify-content: center;
          gap: 7px;
          min-height: 39px;
          padding: 8px 13px;
          border: 1px solid rgba(255, 255, 255, 0.76);
          border-radius: 999px;
          background: rgba(0, 0, 0, 0.42);
          color: #ffffff;
          font: inherit;
          font-size: 12px;
          cursor: pointer;
          backdrop-filter: blur(5px);
          transition: background-color 0.2s ease, transform 0.2s ease;
      }

      .fireworks-control:hover,
      .fireworks-control:focus-visible {
          background: rgba(0, 165, 213, 0.92);
          transform: translateY(-2px);
          outline: none;
      }

      .fireworks-details {
          padding: 34px 34px 30px;
          background: linear-gradient(145deg, #ffffff 0%, #effafd 100%);
          border: 1px solid #d5e8ee;
          border-top: 0;
      }

      .fireworks-meta {
          display: flex;
          align-items: center;
          justify-content: space-between;
          gap: 15px;
          margin-bottom: 16px;
      }

      .fireworks-label {
          display: inline-block;
          padding: 5px 13px;
          background: #00a5d5;
          color: #ffffff;
          font-size: 12px;
          font-weight: bold;
      }

      .fireworks-meta time {
          color: #888888;
          font-size: 13px;
          white-space: nowrap;
      }

      .fireworks-details h3 {
          margin: 0 0 16px;
          color: #007fa7;
          font-size: 22px;
          line-height: 1.65;
      }

      .fireworks-text-grid {
          display: grid;
          grid-template-columns: repeat(2, minmax(0, 1fr));
          gap: 18px 34px;
      }

      .fireworks-text-grid p {
          margin: 0;
          color: #555555;
          font-size: 14px;
          line-height: 1.9;
      }

      .fireworks-lead {
          padding-left: 14px;
          border-left: 3px solid #00a5d5;
          color: #174d60 !important;
          font-size: 15px !important;
          font-weight: bold;
      }

      .fireworks-actions {
          display: flex;
          flex-wrap: wrap;
          gap: 10px;
          margin-top: 25px;
      }

      .fireworks-button {
          display: inline-flex;
          align-items: center;
          justify-content: center;
          gap: 8px;
          min-height: 42px;
          padding: 10px 18px;
          border: 1px solid #00a5d5;
          background: #00a5d5;
          color: #ffffff !important;
          font-size: 14px;
          font-weight: bold;
          text-decoration: none !important;
          transition: background-color 0.2s ease, color 0.2s ease;
      }

      .fireworks-button:hover {
          background: #ffffff;
          color: #00a5d5 !important;
      }

      .fireworks-button.is-secondary {
          background: #ffffff;
          color: #00a5d5 !important;
      }

      .fireworks-button.is-secondary:hover {
          background: #00a5d5;
          color: #ffffff !important;
      }

      .fireworks-note {
          margin: 11px 0 0;
          color: #888888;
          font-size: 11px;
          line-height: 1.7;
      }

      .fireworks-video-fallback {
          position: absolute;
          inset: 0;
          z-index: 4;
          display: none;
          align-items: center;
          justify-content: center;
          padding: 20px;
          background: rgba(6, 25, 35, 0.90);
          color: #ffffff;
          text-align: center;
          line-height: 1.8;
      }

      .fireworks-stage.has-error .fireworks-video-fallback {
          display: flex;
      }

      @media screen and (max-width: 700px) {
          .fireworks-feature {
              margin: 42px 0 56px;
              padding: 0 10px;
          }

          .fireworks-heading {
              display: block;
          }

          .fireworks-heading h2 {
              font-size: 20px;
          }

          .fireworks-heading p {
              margin-top: 5px;
              text-align: left;
          }

          .fireworks-stage {
              max-height: none;
          }

          .fireworks-copy {
              right: 18px;
              bottom: 10px;
              left: 18px;
          }

          .fireworks-controls {
              top: 10px;
              right: 10px;
          }

          .fireworks-control {
              width: auto;
              min-height: 34px;
              padding: 6px 9px;
              gap: 5px;
              font-size: 10px;
              white-space: nowrap;
          }

          .fireworks-control span {
              display: inline;
              font-size: 10px;
          }

          .fireworks-copy span {
              margin: 0 0 3px;
              font-size: 9px;
              line-height: 1.4;
          }

          .fireworks-copy strong {
              font-size: 14px;
              line-height: 1.35;
          }

          .fireworks-details {
              padding: 27px 20px 24px;
          }

          .fireworks-details h3 {
              font-size: 19px;
          }

          .fireworks-text-grid {
              grid-template-columns: 1fr;
              gap: 14px;
          }

          .fireworks-actions {
              display: grid;
              grid-template-columns: 1fr;
          }

          .fireworks-button {
              width: 100%;
          }
      }

      @media (prefers-reduced-motion: reduce) {
          .fireworks-stage video {
              display: none;
          }

          .fireworks-stage {
              background:
                  #061923 url('/_common/img/top/nissyo-fireworks-poster.jpg') center / cover no-repeat;
          }
      }