.sales-subject-frame {
    --artifact-header-surface: rgba(255, 255, 255, 0.92);
    --artifact-header-border: rgba(15, 23, 42, 0.08);
    --artifact-header-accent: #1d3557;
    --artifact-header-muted: #53657d;
    background:
        radial-gradient(circle at top left, rgba(202, 218, 255, 0.6), transparent 42%),
        linear-gradient(180deg, #f6f9ff 0%, #edf2f8 100%);
    color: #18263d;
}

.subject-shell {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.subject-section {
    padding: 32px 0;
}

.subject-kicker {
    margin: 0 0 10px;
    color: #264e86;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.subject-kicker--light {
    color: rgba(255, 255, 255, 0.82);
}

.subject-hero {
    padding: 20px 0 24px;
}

.subject-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
    gap: 24px;
    align-items: start;
}

.subject-hero__copy,
.subject-hero__panel,
.subject-tool__intro,
.subject-table-card,
.subject-memo-card,
.subject-guide-card,
.subject-usage__copy,
.subject-usage__item,
.subject-faq__item,
.subject-cta {
    border: 1px solid rgba(29, 53, 87, 0.08);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

.subject-hero__copy {
    padding: 28px;
}

.subject-hero__copy h1 {
    margin: 0;
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

.subject-hero__lead {
    margin: 18px 0 0;
    color: #526175;
    font-size: 1.05rem;
    line-height: 1.8;
}

.subject-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

.subject-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.subject-button:hover,
.subject-button:focus-visible {
    transform: translateY(-1px);
}

.subject-button--primary {
    background: linear-gradient(135deg, #1d3557, #264e86);
    color: #fff;
    box-shadow: 0 18px 32px rgba(29, 53, 87, 0.24);
}

.subject-button--ghost {
    background: rgba(255, 255, 255, 0.86);
    color: #1d3557;
    border-color: rgba(29, 53, 87, 0.16);
}

.subject-hero__points {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
    color: #334155;
}

.subject-hero__points li::before {
    content: "・";
    margin-right: 6px;
    color: #264e86;
    font-weight: 900;
}

.subject-hero__panel {
    padding: 26px;
    background: linear-gradient(180deg, #14304e 0%, #21486d 100%);
    color: #fff;
}

.subject-hero__panel h2 {
    margin: 0;
    font-size: 1.55rem;
    line-height: 1.35;
}

.subject-hero__panel p {
    margin: 14px 0 0;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.85;
}

.subject-tool {
    display: grid;
    gap: 20px;
}

.subject-tool__intro {
    padding: 24px;
}

.subject-tool__intro h2,
.subject-section__heading h2,
.subject-usage__copy h2,
.subject-faq h2,
.subject-cta h2 {
    margin: 0;
    font-size: clamp(1.65rem, 3vw, 2.4rem);
    line-height: 1.2;
}

.subject-tool__intro p,
.subject-usage__copy p,
.subject-cta p {
    margin: 12px 0 0;
    color: #5a6b80;
    line-height: 1.8;
}

.subject-tool__layout {
    display: grid;
    grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
    gap: 18px;
    align-items: start;
}

.subject-form {
    display: grid;
    gap: 14px;
}

.subject-form__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.subject-form__card {
    display: grid;
    gap: 12px;
    padding: 16px;
    border-radius: 18px;
    border: 1px solid rgba(29, 53, 87, 0.1);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.05);
}

.subject-form__card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.subject-form__badge {
    margin: 0;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(38, 78, 134, 0.08);
    color: #264e86;
    font-size: 0.78rem;
    font-weight: 700;
}

.subject-field {
    display: grid;
    gap: 8px;
}

.subject-field span {
    font-size: 0.92rem;
    font-weight: 700;
    color: #22364f;
}

.subject-field input,
.subject-field select,
.subject-field textarea,
.subject-memo-card textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid rgba(29, 53, 87, 0.14);
    border-radius: 12px;
    background: #fff;
    color: #18263d;
    font: inherit;
    box-sizing: border-box;
}

.subject-field textarea,
.subject-memo-card textarea {
    resize: vertical;
}

.subject-output {
    display: grid;
    gap: 14px;
    position: sticky;
    top: 24px;
}

.subject-output__scores {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.subject-score-card {
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(237, 242, 248, 0.92));
    border: 1px solid rgba(29, 53, 87, 0.08);
}

.subject-score-card__eyebrow,
.subject-guide-card__eyebrow {
    margin: 0 0 8px;
    color: #264e86;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.subject-score-card h3,
.subject-guide-card h3,
.subject-faq__item h3 {
    margin: 0;
    font-size: 1.02rem;
    line-height: 1.45;
}

.subject-score-card__value {
    margin: 10px 0 0;
    font-size: 1.4rem;
    font-weight: 800;
    color: #1d3557;
}

.subject-score-card__note,
.subject-guide-card p,
.subject-faq__item p,
.subject-usage__item p {
    margin: 10px 0 0;
    color: #5a6b80;
    line-height: 1.75;
}

.subject-table-card,
.subject-memo-card,
.subject-usage__copy,
.subject-usage__item,
.subject-faq__item,
.subject-cta {
    padding: 18px;
}

.subject-table-card__head,
.subject-memo-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.subject-table-card__head h2,
.subject-memo-card__head h2 {
    margin: 0;
    font-size: 1.25rem;
}

.subject-copy-button {
    min-height: 40px;
    padding: 0 16px;
    border: 1px solid rgba(29, 53, 87, 0.14);
    border-radius: 999px;
    background: #fff;
    color: #1d3557;
    font-weight: 700;
    cursor: pointer;
}

.subject-table {
    display: grid;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.subject-table__row {
    display: grid;
    grid-template-columns: 100px repeat(5, minmax(126px, 1fr));
    gap: 6px;
    min-width: 760px;
}

.subject-table__row--header .subject-table__cell,
.subject-table__row--header .subject-table__label {
    background: #1d3557;
    color: #fff;
}

.subject-table__label,
.subject-table__cell {
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(240, 245, 252, 0.9);
    border: 1px solid rgba(29, 53, 87, 0.07);
    line-height: 1.55;
    font-size: 0.94rem;
}

.subject-table__label {
    font-weight: 800;
    color: #1d3557;
}

.subject-table__cell--highlight {
    background: rgba(38, 78, 134, 0.12);
    border-color: rgba(38, 78, 134, 0.24);
}

.subject-section--muted {
    background: rgba(255, 255, 255, 0.38);
    border-top: 1px solid rgba(29, 53, 87, 0.06);
    border-bottom: 1px solid rgba(29, 53, 87, 0.06);
}

.subject-section__heading {
    margin-bottom: 18px;
}

.subject-guide-grid,
.subject-usage {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.subject-faq {
    display: grid;
    gap: 18px;
}

.subject-faq__list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.subject-section--dark {
    background: linear-gradient(180deg, #16283f 0%, #213f63 100%);
    color: #fff;
}

.subject-section--dark .subject-faq__item {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: none;
}

.subject-section--dark .subject-faq__item p {
    color: rgba(255, 255, 255, 0.78);
}

.subject-section--cta .subject-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.subject-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.subject-footer {
    padding: 24px 0 40px;
}

.subject-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: #5a6b80;
    font-size: 0.95rem;
}

.subject-footer__inner p,
.subject-footer__inner a {
    margin: 0;
    color: inherit;
}

@media (max-width: 1080px) {
    .subject-hero__grid,
    .subject-tool__layout,
    .subject-guide-grid,
    .subject-usage,
    .subject-faq__list,
    .subject-section--cta .subject-cta {
        grid-template-columns: 1fr;
    }

    .subject-output {
        position: static;
    }

    .subject-form__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .subject-shell {
        width: min(100% - 24px, 1160px);
    }

    .subject-section {
        padding: 22px 0;
    }

    .subject-hero__copy,
    .subject-hero__panel,
    .subject-tool__intro,
    .subject-table-card,
    .subject-memo-card,
    .subject-guide-card,
    .subject-usage__copy,
    .subject-usage__item,
    .subject-faq__item,
    .subject-cta,
    .subject-form__card {
        padding: 18px;
        border-radius: 18px;
    }

    .subject-output__scores {
        grid-template-columns: 1fr;
    }

    .subject-form__grid {
        grid-template-columns: 1fr;
    }

    .subject-table__row {
        grid-template-columns: 96px repeat(5, minmax(136px, 1fr));
        min-width: 760px;
    }

    .subject-table-card__head,
    .subject-memo-card__head {
        align-items: start;
        flex-direction: column;
    }

    .subject-button {
        width: 100%;
    }

    .subject-hero__actions,
    .subject-cta__actions {
        display: grid;
        width: 100%;
    }
}