/* 七つの星・bi 固有スタイル (v1.1) */
#yk-nanatsu-main /* soku.html 固有スタイル（shin.html と共通レイアウト） */
      .hero--shin {

        background:
          linear-gradient(90deg, rgba(255,253,248,0.97) 0%, rgba(255,253,248,0.78) 40%, rgba(255,253,248,0) 62%),
          linear-gradient(0deg, rgba(255,253,248,0.92) 0%, rgba(255,253,248,0) 28%),
          url("./bi.webp") right center / cover no-repeat,
          var(--paper);
      }
#yk-nanatsu-main .signal {

        padding: clamp(4rem, 10vw, 8rem) clamp(1rem, 4vw, 3rem);
        background:
          radial-gradient(ellipse 70% 60% at 60% 50%, rgba(184,232,232,0.32) 0%, transparent 70%),
          var(--paper);
        text-align: center;
      }
#yk-nanatsu-main .signal--closing {

        background:
          radial-gradient(ellipse 70% 60% at 50% 50%, rgba(200,155,90,0.1) 0%, transparent 70%),
          var(--paper);
      }
#yk-nanatsu-main .signal__question {

        max-width: 840px;
        margin: 0 auto;
        font-family: YakuHanMP, 'DM Serif Display', "Noto Serif JP", "Hiragino Mincho ProN", Georgia, serif;
        font-size: clamp(1.4rem, 3.2vw, 2.2rem);
        line-height: 1.7;
        color: var(--muted);
        font-weight: 400;
        letter-spacing: 0;
        word-break: auto-phrase;
      }
#yk-nanatsu-main .frame-grid {

        display: grid;
        grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1fr);
        gap: clamp(2rem, 6vw, 5rem);
        align-items: center;
        max-width: 1100px;
        margin: 3rem auto 0;
      }
#yk-nanatsu-main .star-tower {

        width: min(100%, 324px);
        display: flex;
        flex-direction: column;
        gap: 4px;
        align-items: center;
      }
#yk-nanatsu-main .tower-layer {

        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 6px;
        font-family: YakuHanMP, 'DM Serif Display', "Noto Serif JP", serif;
        font-size: 1.25rem;
        font-weight: 700;
        letter-spacing: 0.05em;
        color: var(--ink);
      }
#yk-nanatsu-main .tower-layer--sm {
 width: 30.9%; height: 50px; }
#yk-nanatsu-main .tower-layer--md {
 width: 40.7%; height: 52px; }
#yk-nanatsu-main .tower-layer--lg {
 width: 51.9%; height: 54px; }
#yk-nanatsu-main .tower-layer--xl {
 width: 63.3%; height: 56px; }
#yk-nanatsu-main .tower-layer--xxl {
 width: 75.3%; height: 58px; }
#yk-nanatsu-main .tower-layer--xxxl {
 width: 87.7%; height: 60px; }
#yk-nanatsu-main .tower-layer--base {

        width: 100%;
        height: 80px;
        margin-top: 4px;
        border: 2px solid rgba(184, 92, 72, 0.5);
        border-radius: 8px 8px 4px 4px;
        background: rgba(184, 92, 72, 0.2);
        color: rgba(150, 60, 40, 1);
        font-size: 1.5rem;
      }
#yk-nanatsu-main .tower-layer:not(.tower-layer--base) {

        border: 1px solid rgba(26, 128, 182, 0.2);
        background: rgba(184, 232, 232, 0.22);
      }
#yk-nanatsu-main /* 現在の編をハイライト */
      .tower-layer--current {

        border: 2px solid rgba(26, 128, 182, 0.7) !important;
        background: rgba(184, 232, 232, 0.6) !important;
        color: rgba(20, 90, 130, 1);
      }
#yk-nanatsu-main .tower-arrow {

        color: var(--muted);
        font-size: 0.7rem;
        line-height: 1;
        opacity: 0.5;
      }
#yk-nanatsu-main .frame-text, #yk-nanatsu-main .axis-body, #yk-nanatsu-main .root-body {

        max-width: 720px;
      }
#yk-nanatsu-main #stages .section-heading {

        max-width: 960px;
      }
#yk-nanatsu-main .frame-text p, #yk-nanatsu-main .axis-body p, #yk-nanatsu-main .root-body p {

        margin: 1.2rem 0 0;
        font-size: 1rem;
        line-height: 1.9;
        color: var(--ink);
      }
#yk-nanatsu-main .priority-grid, #yk-nanatsu-main .stages-grid {

        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: clamp(1rem, 3vw, 2rem);
        max-width: 960px;
        margin: 3rem auto 0;
      }
#yk-nanatsu-main .priority-grid {

        grid-template-columns: repeat(2, minmax(0, 1fr));
        max-width: 1300px;
      }
#yk-nanatsu-main .stages-grid--five {

        grid-template-columns: repeat(5, minmax(0, 1fr));
        max-width: 1120px;
      }
#yk-nanatsu-main .stage-card {

        padding: 2rem 1.6rem;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: rgba(255,255,255,0.78);
        box-shadow: var(--shadow);
        text-align: center;
        overflow: hidden;
      }
#yk-nanatsu-main .stage-card img {

        width: 100%;
        margin: 0 0 1.4rem;
        aspect-ratio: 4/3;
        object-fit: cover;
        display: block;
        border-radius: 0;
      }
#yk-nanatsu-main .priority-grid .stage-card {

        padding: 0 0 2rem;
        text-align: left;
      }
#yk-nanatsu-main .priority-grid .stage-card h3, #yk-nanatsu-main .priority-grid .stage-card p {

        padding: 0 1.6rem;
      }
#yk-nanatsu-main .stage-card__icon {

        width: 4rem;
        height: 4rem;
        display: grid;
        place-items: center;
        margin: 0 auto 1rem;
        border: 2px solid rgba(26,128,182,0.2);
        border-radius: 50%;
        background: rgba(184,232,232,0.35);
        color: rgba(26,128,182,1);
        font-family: YakuHanMP, "Noto Serif JP", serif;
        font-size: 1.5rem;
        font-weight: 900;
      }
#yk-nanatsu-main .stage-card h3 {

        margin: 0 0 0.6rem;
        font-size: 1.2rem;
        word-break: auto-phrase;
        text-wrap: pretty;
      }
#yk-nanatsu-main .stage-card p {

        margin: 0;
        color: var(--muted);
        font-size: 0.94rem;
        line-height: 1.8;
        word-break: auto-phrase;
        text-wrap: pretty;
      }
#yk-nanatsu-main /* プレースホルダ表示用 */
      .ph-note {

        max-width: 760px;
        margin: 1.4rem auto 0;
        padding: 0.7rem 1rem;
        border: 1px dashed #c9a23a;
        border-radius: 8px;
        background: rgba(201, 162, 58, 0.08);
        color: #8a6d1f;
        font-size: 0.85rem;
        text-align: center;
      }
#yk-nanatsu-main .dot-list {

        display: grid;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        gap: 0.8rem;
        max-width: 1300px;
        margin: 2rem auto 0;
        padding: 0;
        list-style: none;
      }
#yk-nanatsu-main .dot-list li {

        position: relative;
        padding: 1rem 1rem 1rem 2rem;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: rgba(255,255,255,0.68);
        color: var(--ink);
        font-weight: 700;
        line-height: 1.6;
        word-break: auto-phrase;
        text-wrap: pretty;
      }
#yk-nanatsu-main .dot-list li::before {

        content: "";
        position: absolute;
        top: 1.55rem;
        left: 1rem;
        width: 0.45rem;
        height: 0.45rem;
        border-radius: 50%;
        background: var(--aqua-strong);
      }
#yk-nanatsu-main .section-note {

        max-width: 760px;
        margin: 2.2rem auto 0 !important;
      }
#yk-nanatsu-main .cta-shin {

        text-align: center;
        background:
          linear-gradient(180deg, transparent 0%, rgba(184,232,232,0.14) 100%),
          var(--paper);
      }
#yk-nanatsu-main .cta-shin p {

        max-width: 560px;
        margin: 1.2rem auto 2rem;
        color: var(--muted);
        font-size: 1rem;
        line-height: 1.9;
      }
#yk-nanatsu-main .dl-card {

        display: inline-flex;
        flex-direction: column;
        max-width: 400px;
        margin-top: 2.5rem;
        overflow: hidden;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: #fff;
        box-shadow: var(--shadow);
        text-decoration: none;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
      }
#yk-nanatsu-main .dl-card:hover {

        transform: translateY(-4px);
        box-shadow: 0 32px 80px rgba(52,102,111,0.22);
      }
#yk-nanatsu-main .dl-card img {

        width: 100%;
        display: block;
        border-radius: 0;
      }
#yk-nanatsu-main .dl-card__label {

        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.9rem 1.3rem;
        border-top: 1px solid var(--line);
        background: rgba(255,255,255,0.95);
        color: var(--aqua-strong);
        font-size: 0.95rem;
        font-weight: 700;
      }
@media (max-width: 900px) {
#yk-nanatsu-main .stages-grid--five, #yk-nanatsu-main .dot-list {

          grid-template-columns: repeat(2, minmax(0, 1fr));
        }

      }
@media (max-width: 640px) {
#yk-nanatsu-main .hero--shin {

          display: flex;
          flex-direction: column;
          min-height: auto;
          background: none;
        }
#yk-nanatsu-main .hero--shin .hero__chart {

          display: block;
          width: 100%;
          aspect-ratio: 4 / 3;
          object-fit: cover;
          object-position: center center;
        }
#yk-nanatsu-main .hero--shin .hero__inner {

          background:
            linear-gradient(0deg, rgba(255,253,248,1) 60%, rgba(255,253,248,0.82) 100%),
            var(--paper);
        }
#yk-nanatsu-main .frame-grid, #yk-nanatsu-main .priority-grid, #yk-nanatsu-main .stages-grid, #yk-nanatsu-main .stages-grid--five, #yk-nanatsu-main .dot-list {

          grid-template-columns: 1fr;
        }
#yk-nanatsu-main .star-tower {

          margin: 0 auto 2rem;
        }

      }