@charset "UTF-8";
/* ==========================================================================
   業務システム開発・改修LP専用（system-development/index.php のみが読み込む）
   - トップ（css2/home.css）と同じ配色・文字組み・番号付きの小見出しを、3Dなしで組み直したもの
   - style.css / grid.css の汎用ルール（section の余白、nav ul、li の余白、h要素の細字 等）を
     上書きするため、セレクタは原則 body.page-sysdev main から書く
   ========================================================================== */

body.page-sysdev {
    --sd-navy: #050b1f;
    --sd-navy-2: #0b1430;
    --sd-ink: #0f172a;
    --sd-ink-2: #334155;
    --sd-muted: #5b6b82;
    --sd-line: #dde3ec;
    --sd-mist: #f3f5fa;
    --sd-accent: #4f46e5;
    --sd-cyan: #7dd3fc;
    --sd-on-dark: #eef2ff;
    --sd-on-dark-2: #c3cfe8;
    --sd-line-dark: rgba(148, 163, 184, 0.26);
    --sd-en: "Space Grotesk", "Noto Sans JP", sans-serif;
    background: #fff;
}
body.page-sysdev .site-header__nav a[href="/system-development/"] {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.18);
    color: var(--accent);
}

/* ---------- 帯の共通 ---------- */
body.page-sysdev main {
    margin: 0;
    font-size: 1.6rem;
    line-height: 1.75;
}
body.page-sysdev main > section.sd-sec {
    margin: 0;
    padding: 12rem 0;
}
body.page-sysdev main > section.sd-light {
    background: #fff;
    color: var(--sd-ink);
}
body.page-sysdev main > section.sd-mist {
    background: var(--sd-mist);
    color: var(--sd-ink);
}
body.page-sysdev main > section.sd-dark {
    background:
        radial-gradient(ellipse at 85% 0%, rgba(63, 200, 255, 0.12), transparent 50%),
        linear-gradient(180deg, var(--sd-navy) 0%, var(--sd-navy-2) 100%);
    color: var(--sd-on-dark);
}
/* 濃紺→明るい帯の境目に、トップと同じ配色のライン */
body.page-sysdev main > section.sd-dark + section:not(.sd-dark) {
    position: relative;
}
body.page-sysdev main > section.sd-dark + section:not(.sd-dark)::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6c63ff, #3fc8ff, #9bdd4f);
}
body.page-sysdev main .sd-wrap {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 3.2rem;
}
body.page-sysdev main .sd-nb {
    display: inline-block;
}
body.page-sysdev main :is(p, ul, ol, dl, table, li) {
    margin-bottom: 0;
}
body.page-sysdev main :is(ul, ol) {
    list-style: none;
    padding: 0;
}
/* grid.css の入れ子リストの字下げ・縮小を打ち消す */
body.page-sysdev main :is(ul, ol) :is(ul, ol) {
    margin: 0;
    font-size: inherit;
}
/* style.css は a を display:block にしているため、文中のリンクは行内に戻す */
body.page-sysdev main p a {
    display: inline;
}
body.page-sysdev main :is(h1, h2, h3) {
    margin: 0;
    font-weight: 800;
    text-wrap: balance;
    word-break: auto-phrase;
}
body.page-sysdev main section[id],
body.page-sysdev main li[id] {
    scroll-margin-top: 9rem;
}

/* ---------- セクションの小見出し（番号＋短い線＋日本語） ---------- */
body.page-sysdev main .sd-label {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin: 0 0 2.4rem;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-label span {
    font-family: var(--sd-en);
    letter-spacing: 0.1em;
    color: var(--sd-muted);
}
body.page-sysdev main .sd-label span::after {
    content: "";
    display: inline-block;
    width: 2.4rem;
    height: 1px;
    margin-left: 1.2rem;
    vertical-align: middle;
    background: currentColor;
    opacity: 0.6;
}
body.page-sysdev main .sd-dark .sd-label {
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-dark .sd-label span {
    color: var(--sd-on-dark-2);
}

/* ---------- 見出し ---------- */
body.page-sysdev main .sd-h2 {
    font-size: clamp(3.4rem, 3.6vw, 5rem);
    line-height: 1.3;
    letter-spacing: -0.03em;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-dark .sd-h2 {
    color: #fff;
}

/* ---------- 矢印付きの文字リンク ---------- */
body.page-sysdev main a.sd-arrow {
    display: inline-block;
    padding: 0.6rem 0;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.6;
    color: var(--sd-accent);
    text-decoration: none;
}
body.page-sysdev main .sd-dark a.sd-arrow {
    color: #a5d8ff;
}
body.page-sysdev main a.sd-arrow::after {
    content: "→";
    display: inline-block;
    margin-left: 0.6rem;
    transition: transform 0.2s ease;
}
body.page-sysdev main a.sd-arrow:hover::after {
    transform: translateX(4px);
}
body.page-sysdev main a:focus-visible,
body.page-sysdev main summary:focus-visible {
    outline: 2px solid #3fc8ff;
    outline-offset: 4px;
    border-radius: 4px;
}

/* ---------- ボタン ---------- */
body.page-sysdev main a.sd-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 5.8rem;
    padding: 0 3.4rem;
    border-radius: 999px;
    font-size: 1.6rem;
    font-weight: 700;
    text-decoration: none;
    transition: filter 0.2s ease, transform 0.2s ease;
}
body.page-sysdev main a.sd-btn--main {
    background: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
    color: #fff;
    box-shadow: 0 18px 40px -20px rgba(56, 189, 248, 0.8);
}
body.page-sysdev main a.sd-btn--ink {
    background: var(--sd-ink);
    color: #fff;
}
body.page-sysdev main a.sd-btn:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

/* ==========================================================================
   ヒーロー（濃紺。右に対応領域の目次）
   ========================================================================== */
body.page-sysdev main > section.sd-hero {
    position: relative;
    overflow: hidden;
    padding: 0;
    background:
        linear-gradient(90deg, rgba(5, 11, 31, 1) 0%, rgba(5, 11, 31, 0.92) 55%, rgba(5, 11, 31, 0.78) 100%),
        repeating-linear-gradient(90deg, rgba(125, 211, 252, 0.07) 0 1px, transparent 1px 12rem),
        repeating-linear-gradient(0deg, rgba(125, 211, 252, 0.07) 0 1px, transparent 1px 12rem),
        linear-gradient(135deg, #0b1430 0%, #050b1f 100%);
}
body.page-sysdev main > section.sd-hero::after {
    content: "";
    position: absolute;
    right: -12rem;
    top: -10rem;
    width: 56rem;
    height: 56rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.35) 0%, rgba(63, 200, 255, 0.12) 45%, transparent 70%);
    pointer-events: none;
}
body.page-sysdev main .sd-hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 34rem;
    gap: 6.4rem;
    align-items: end;
    padding-top: 6.4rem;
    padding-bottom: 9.6rem;
}
body.page-sysdev main .sd-crumb ol {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0;
    margin: 0 0 5.6rem;
    font-size: 1.3rem;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-crumb li {
    flex: none;
    text-align: left;
}
body.page-sysdev main .sd-crumb li + li::before {
    content: "/";
    margin: 0 1rem;
    opacity: 0.6;
}
body.page-sysdev main .sd-crumb a {
    display: inline;
    padding: 0;
    width: auto;
    color: var(--sd-on-dark-2);
    text-decoration: underline;
    text-underline-offset: 0.3em;
}
body.page-sysdev main .sd-crumb a:hover {
    background: none;
    color: #fff;
}
body.page-sysdev main .sd-hero__eyebrow {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-hero__title {
    margin-top: 2.4rem;
    font-size: clamp(4.8rem, 6vw, 8.4rem);
    line-height: 1.12;
    letter-spacing: -0.035em;
    color: #f4f7ff;
}
body.page-sysdev main .sd-hero__sub {
    max-width: 32em;
    margin-top: 3.2rem;
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.6;
    color: #fff;
}
body.page-sysdev main .sd-hero__lead {
    max-width: 38em;
    margin-top: 2rem;
    font-size: 1.7rem;
    line-height: 1.95;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.6rem 3.2rem;
    margin-top: 4rem;
}
body.page-sysdev main .sd-hero__note {
    margin-top: 2.4rem;
    font-size: 1.4rem;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-hero__index {
    padding-left: 3.2rem;
    border-left: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-hero__index-head {
    margin-bottom: 1.6rem;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-hero__index ol {
    display: block;
    border-top: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-hero__index li {
    text-align: left;
    border-bottom: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-hero__index a {
    display: flex;
    gap: 1.6rem;
    align-items: baseline;
    width: 100%;
    padding: 1.4rem 0;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.5;
    text-align: left;
    color: #fff;
    transition: color 0.2s ease, padding 0.2s ease;
}
body.page-sysdev main .sd-hero__index a span {
    font-family: var(--sd-en);
    font-size: 1.3rem;
    letter-spacing: 0.08em;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-hero__index a:hover {
    background: none;
    padding-left: 0.6rem;
    color: var(--sd-cyan);
}

/* ==========================================================================
   01 お困りごと（困りごと｜h-systemでの対応 の2列の行）
   ========================================================================== */
body.page-sysdev main .sd-concerns__rows {
    margin-top: 5.6rem;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-concerns__row {
    display: grid;
    grid-template-columns: 6.4rem minmax(0, 1fr) minmax(0, 1fr);
    gap: 4rem;
    padding: 4rem 0;
    border-bottom: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-concerns__no {
    padding-top: 0.4rem;
    font-family: var(--sd-en);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-concerns__title {
    font-size: 2.4rem;
    line-height: 1.45;
    letter-spacing: -0.01em;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-concerns__body {
    margin-top: 1rem;
    font-size: 1.6rem;
    line-height: 1.85;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-concerns__answer {
    padding-left: 4rem;
    border-left: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-concerns__tag {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-concerns__text {
    margin: 0.6rem 0 0.4rem;
    font-size: 1.6rem;
    line-height: 1.85;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-inline-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 2.4rem;
    margin-top: 5.6rem;
}
body.page-sysdev main .sd-inline-cta p {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.7;
    color: var(--sd-ink);
}

/* ==========================================================================
   02 対応領域（濃紺。罫線で区切った3列×2段）
   ========================================================================== */
body.page-sysdev main .sd-areas__head {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 6.4rem;
    align-items: end;
}
body.page-sysdev main .sd-areas__text {
    font-size: 1.7rem;
    line-height: 1.95;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-areas__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 6.4rem;
    border-top: 1px solid rgba(238, 242, 255, 0.55);
}
body.page-sysdev main .sd-areas__item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 4rem 3.2rem 4.4rem 0;
    border-bottom: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-areas__item:not(:nth-child(3n + 1)) {
    padding-left: 3.2rem;
    border-left: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-areas__no {
    font-family: var(--sd-en);
    font-size: 4.8rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #3fc8ff 0%, #6c63ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
body.page-sysdev main .sd-areas__name {
    margin-top: 2.4rem;
    font-size: 2.2rem;
    line-height: 1.45;
    color: #fff;
}
body.page-sysdev main .sd-areas__body {
    margin-top: 1.2rem;
    font-size: 1.55rem;
    line-height: 1.85;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-areas__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.6rem;
    margin-top: 2rem;
}
body.page-sysdev main .sd-areas__tags li {
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-areas__tags li::before {
    content: "— ";
    opacity: 0.6;
}
body.page-sysdev main .sd-areas__item .sd-arrow {
    margin-top: auto;
    padding-top: 2rem;
}

/* ==========================================================================
   03 開発の考え方（大きな文字組み）
   ========================================================================== */
body.page-sysdev main > section.sd-philosophy {
    padding-top: 14rem;
}
body.page-sysdev main .sd-philosophy__title {
    font-size: clamp(4.4rem, 7vw, 10.4rem);
    line-height: 1.15;
    letter-spacing: -0.045em;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-philosophy__title .sd-nb:nth-child(n + 3) {
    background: linear-gradient(90deg, #4f46e5 0%, #0ea5e9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
body.page-sysdev main .sd-philosophy__cols {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4.8rem;
    max-width: 96rem;
    margin: 5.6rem 0 0 auto;
}
body.page-sysdev main .sd-philosophy__cols p {
    font-size: 1.7rem;
    line-height: 2;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-after {
    margin-top: 9.6rem;
    padding-top: 4rem;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-after__head {
    font-size: 1.8rem;
    line-height: 1.6;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-after__list {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 3.2rem;
    margin-top: 3.2rem;
}
body.page-sysdev main .sd-after__list li {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
body.page-sysdev main .sd-after__no {
    font-family: var(--sd-en);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-after__list strong {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.5;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-after__body {
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--sd-ink-2);
}

/* ==========================================================================
   04 AIと開発者の役割（工程×役割の表）
   ========================================================================== */
body.page-sysdev main .sd-roles__head {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 6.4rem;
    align-items: end;
}
body.page-sysdev main .sd-roles__text p {
    font-size: 1.7rem;
    line-height: 1.95;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-roles__text p + p {
    margin-top: 1.6rem;
}
body.page-sysdev main .sd-roles__table-wrap {
    margin-top: 6.4rem;
}
body.page-sysdev main .sd-roles__table {
    width: 100%;
    border-collapse: collapse;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-roles__table caption {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}
body.page-sysdev main .sd-roles__table :is(th, td) {
    padding: 2.6rem 2.4rem 2.6rem 0;
    border-bottom: 1px solid var(--sd-line);
    font-size: 1.6rem;
    line-height: 1.8;
    text-align: left;
    vertical-align: top;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-roles__table thead th {
    padding-top: 1.8rem;
    padding-bottom: 1.8rem;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--sd-muted);
}
body.page-sysdev main .sd-roles__table tbody th {
    width: 26%;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-roles__table tbody th span {
    display: block;
    font-family: var(--sd-en);
    font-size: 1.3rem;
    letter-spacing: 0.08em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-roles__table td:last-child {
    font-weight: 700;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-role {
    display: inline-block;
    margin-right: 0.6rem;
    padding: 0.1rem 1rem;
    border-radius: 999px;
    font-size: 1.3rem;
    font-weight: 700;
}
body.page-sysdev main .sd-role--ai {
    background: rgba(63, 200, 255, 0.16);
    color: #0369a1;
}
body.page-sysdev main .sd-role--dev {
    background: var(--sd-ink);
    color: #fff;
}
body.page-sysdev main .sd-roles__note {
    margin-top: 2.4rem;
    font-size: 1.5rem;
    line-height: 1.85;
    color: var(--sd-muted);
}
body.page-sysdev main .sd-roles__note a {
    color: var(--sd-accent);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 0.25em;
}

/* ==========================================================================
   05 技術と開発経験
   ========================================================================== */
body.page-sysdev main .sd-tech__grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 8rem;
    align-items: start;
}
body.page-sysdev main .sd-tech__text {
    margin-top: 2.8rem;
    font-size: 1.7rem;
    line-height: 1.95;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-tech__text + .sd-tech__text {
    margin-top: 1.6rem;
}
body.page-sysdev main .sd-techlist {
    margin-top: 4.8rem;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-techlist__row {
    display: grid;
    grid-template-columns: 18rem minmax(0, 1fr);
    gap: 2.4rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-techlist dt {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.8;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-techlist dd {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.8;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-tech__aside {
    margin-top: 6.4rem;
    padding: 4rem 0 0;
    border-top: 6px solid var(--sd-ink);
}
body.page-sysdev main .sd-tech__aside-kicker {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-tech__aside-title {
    margin-top: 1.2rem;
    font-size: 2.2rem;
    line-height: 1.55;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-tech__aside-text {
    margin: 1.6rem 0 1.2rem;
    font-size: 1.5rem;
    line-height: 1.85;
    color: var(--sd-ink-2);
}

/* ==========================================================================
   06 実績（濃紺。罫線の台帳）
   ========================================================================== */
body.page-sysdev main .sd-works__text {
    margin-top: 1.6rem;
    font-size: 1.6rem;
    line-height: 1.85;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-ledger {
    margin-top: 5.6rem;
    border-top: 1px solid rgba(238, 242, 255, 0.55);
}
body.page-sysdev main .sd-ledger__row {
    display: grid;
    grid-template-columns: 18rem minmax(0, 1fr) 28rem;
    gap: 4rem;
    padding: 3.6rem 0;
    border-bottom: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-ledger__kind {
    padding-top: 0.4rem;
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.7;
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-ledger__name {
    font-size: 2.2rem;
    line-height: 1.5;
    color: #fff;
}
body.page-sysdev main .sd-ledger__body {
    margin-top: 0.8rem;
    font-size: 1.6rem;
    line-height: 1.85;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-ledger__meta {
    padding-top: 0.4rem;
}
body.page-sysdev main .sd-ledger__meta div + div {
    margin-top: 1.2rem;
}
body.page-sysdev main .sd-ledger__meta dt {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #93a6cc;
}
body.page-sysdev main .sd-ledger__meta dd {
    margin: 0.2rem 0 0;
    font-size: 1.5rem;
    line-height: 1.75;
    color: var(--sd-on-dark);
}
body.page-sysdev main .sd-own {
    margin-top: 7.2rem;
}
body.page-sysdev main .sd-own__head {
    margin-bottom: 1.6rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-own__list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid rgba(238, 242, 255, 0.55);
}
body.page-sysdev main .sd-own__list li {
    border-bottom: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-own__list li + li {
    border-left: 1px solid var(--sd-line-dark);
}
body.page-sysdev main a.sd-own__item {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    height: 100%;
    padding: 3.2rem 2.8rem 3.2rem 0;
    color: var(--sd-on-dark);
    text-decoration: none;
}
body.page-sysdev main .sd-own__list li + li a.sd-own__item {
    padding-left: 2.8rem;
}
body.page-sysdev main .sd-own__item strong {
    font-family: var(--sd-en);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: #fff;
    transition: color 0.2s ease;
}
body.page-sysdev main .sd-own__item strong::after {
    content: " →";
    color: #3fc8ff;
}
body.page-sysdev main .sd-own__item span {
    font-size: 1.5rem;
    line-height: 1.75;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-own__item .sd-own__tech {
    font-size: 1.3rem;
    color: #93a6cc;
}
body.page-sysdev main a.sd-own__item:hover strong {
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-works__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 4rem;
    margin-top: 4.8rem;
}

/* ==========================================================================
   07 費用（無料｜有償 の2列）
   ========================================================================== */
body.page-sysdev main .sd-price__head {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 6.4rem;
    align-items: end;
}
body.page-sysdev main .sd-price__text {
    font-size: 1.7rem;
    line-height: 1.95;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-price__cols {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 6.4rem;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-price__col {
    padding: 4.8rem 4.8rem 4.8rem 0;
}
body.page-sysdev main .sd-price__col + .sd-price__col {
    padding: 4.8rem 0 4.8rem 4.8rem;
    border-left: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-price__badge {
    font-size: clamp(5.6rem, 6vw, 8rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
}
body.page-sysdev main .sd-price__badge--free {
    background: linear-gradient(90deg, #4f46e5 0%, #0ea5e9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
body.page-sysdev main .sd-price__badge--paid {
    color: var(--sd-ink);
}
body.page-sysdev main .sd-price__name {
    margin-top: 2.4rem;
    font-size: 2.4rem;
    line-height: 1.45;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-price__desc {
    margin-top: 1.2rem;
    font-size: 1.6rem;
    line-height: 1.9;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-price__dl {
    margin-top: 3.2rem;
    border-top: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-price__dl div {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 1.6rem;
    padding: 1.6rem 0;
    border-bottom: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-price__dl dt {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.8;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-price__dl dd {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-price__factors {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 4rem;
    padding: 4rem 0 0;
    border-top: 2px solid var(--sd-ink);
}
body.page-sysdev main .sd-price__factors-head {
    font-size: 2rem;
    line-height: 1.5;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-price__factors ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem 4rem;
}
body.page-sysdev main .sd-price__factors li {
    position: relative;
    padding-left: 2rem;
    font-size: 1.6rem;
    line-height: 1.8;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-price__factors li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.8em;
    width: 0.8rem;
    height: 2px;
    background: var(--sd-accent);
}

/* ==========================================================================
   08 進め方・09 FAQ
   ========================================================================== */
body.page-sysdev main .sd-flow {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 3.2rem;
    margin-top: 4.8rem;
}
body.page-sysdev main .sd-flow::before {
    content: "";
    position: absolute;
    top: 0.7rem;
    left: 0.7rem;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #6c63ff, #3fc8ff, #9bdd4f);
}
body.page-sysdev main .sd-flow li {
    position: relative;
    padding-top: 3.6rem;
}
body.page-sysdev main .sd-flow li::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #38bdf8, #6366f1);
    box-shadow: 0 0 0 5px var(--sd-mist);
}
body.page-sysdev main .sd-flow__no {
    display: block;
    font-family: var(--sd-en);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-flow__name {
    display: block;
    margin: 0.4rem 0 0.6rem;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-flow__body {
    display: block;
    font-size: 1.55rem;
    line-height: 1.8;
    color: var(--sd-ink-2);
}
body.page-sysdev main .sd-faq {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 8rem;
    margin-top: 12rem;
}
body.page-sysdev main .sd-faq__intro .sd-h2 {
    margin-bottom: 1.6rem;
}
body.page-sysdev main .sd-faq__list {
    border-top: 1px solid var(--sd-ink);
}
body.page-sysdev main .sd-faq__item {
    border-bottom: 1px solid var(--sd-line);
}
body.page-sysdev main .sd-faq__item summary {
    position: relative;
    display: block;
    padding: 2.6rem 5.6rem 2.6rem 0;
    cursor: pointer;
    list-style: none;
}
body.page-sysdev main .sd-faq__item summary::-webkit-details-marker {
    display: none;
}
body.page-sysdev main .sd-faq__item summary::after {
    content: "+";
    position: absolute;
    top: 2.2rem;
    right: 0.4rem;
    font-family: var(--sd-en);
    font-size: 2.6rem;
    line-height: 1;
    color: var(--sd-accent);
}
body.page-sysdev main .sd-faq__item[open] summary::after {
    content: "−";
}
body.page-sysdev main .sd-faq__q {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.6;
    letter-spacing: 0;
    color: var(--sd-ink);
}
body.page-sysdev main .sd-faq__a {
    padding: 0 5.6rem 2.8rem 0;
}
body.page-sysdev main .sd-faq__a p {
    margin-bottom: 0.4rem;
    font-size: 1.6rem;
    line-height: 1.95;
    color: var(--sd-ink-2);
}

/* ==========================================================================
   10 お問い合わせ（濃紺。大きな文字と矢印の行）
   ========================================================================== */
body.page-sysdev main .sd-contact__title {
    font-size: clamp(4.4rem, 5.2vw, 7.2rem);
    line-height: 1.2;
    letter-spacing: -0.035em;
    color: #fff;
}
body.page-sysdev main .sd-contact__grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 6.4rem;
    margin-top: 5.6rem;
    align-items: start;
}
body.page-sysdev main .sd-routes {
    border-top: 1px solid rgba(238, 242, 255, 0.45);
}
body.page-sysdev main .sd-routes li {
    border-bottom: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-routes a {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.4rem 2.4rem;
    padding: 3rem 0;
    color: var(--sd-on-dark);
    text-decoration: none;
}
body.page-sysdev main .sd-routes strong {
    grid-column: 1;
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.45;
    color: #fff;
    transition: color 0.2s ease;
}
body.page-sysdev main .sd-routes span {
    grid-column: 1;
    font-size: 1.5rem;
    line-height: 1.7;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-routes a::after {
    content: "→";
    grid-column: 2;
    grid-row: 1 / span 2;
    font-family: var(--sd-en);
    font-size: 3rem;
    color: #3fc8ff;
    transition: transform 0.2s ease;
}
body.page-sysdev main .sd-routes a:hover strong {
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-routes a:hover::after {
    transform: translateX(6px);
}
body.page-sysdev main .sd-prep {
    padding: 3.2rem 0 0 3.2rem;
    border-left: 1px solid var(--sd-line-dark);
}
body.page-sysdev main .sd-prep__head {
    font-size: 1.7rem;
    line-height: 1.6;
    color: #fff;
}
body.page-sysdev main .sd-prep ul {
    margin-top: 1.6rem;
}
body.page-sysdev main .sd-prep li {
    position: relative;
    padding-left: 1.8rem;
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-prep li + li {
    margin-top: 0.8rem;
}
body.page-sysdev main .sd-prep li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.8em;
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: #3fc8ff;
}
body.page-sysdev main .sd-prep__note {
    margin-top: 1.6rem;
    font-size: 1.4rem;
    line-height: 1.8;
    color: var(--sd-cyan);
}
body.page-sysdev main .sd-contact__tel {
    margin-top: 4rem;
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main .sd-contact__tel a {
    font-weight: 700;
    color: #fff;
}
body.page-sysdev main .sd-contact__note {
    margin-top: 0.4rem;
    font-size: 1.4rem;
    line-height: 1.8;
    color: var(--sd-on-dark-2);
}
body.page-sysdev main nav.sd-related {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 2.8rem;
    margin-top: 6.4rem;
    padding-top: 3.2rem;
    border-top: 1px solid var(--sd-line-dark);
}
body.page-sysdev main nav.sd-related a {
    padding: 0;
    font-size: 1.4rem;
    color: var(--sd-on-dark-2);
    text-decoration: underline;
    text-underline-offset: 0.3em;
}
body.page-sysdev main nav.sd-related a:hover {
    background: none;
    color: #fff;
}

/* ==========================================================================
   画面幅ごとの調整
   ========================================================================== */
@media (max-width: 1100px) {
    body.page-sysdev main .sd-hero__grid {
        grid-template-columns: minmax(0, 1fr) 28rem;
        gap: 4rem;
    }
    body.page-sysdev main .sd-after__list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        row-gap: 4rem;
    }
    body.page-sysdev main .sd-ledger__row {
        grid-template-columns: 14rem minmax(0, 1fr) 22rem;
        gap: 3.2rem;
    }
}

@media (max-width: 900px) {
    body.page-sysdev main > section.sd-sec {
        padding: 8.8rem 0;
    }
    body.page-sysdev main > section.sd-hero {
        padding: 0;
    }
    body.page-sysdev main .sd-hero__grid,
    body.page-sysdev main .sd-areas__head,
    body.page-sysdev main .sd-roles__head,
    body.page-sysdev main .sd-tech__grid,
    body.page-sysdev main .sd-price__head,
    body.page-sysdev main .sd-price__factors,
    body.page-sysdev main .sd-faq,
    body.page-sysdev main .sd-contact__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 3.2rem;
    }
    body.page-sysdev main .sd-hero__grid {
        padding-top: 4rem;
        padding-bottom: 7.2rem;
    }
    body.page-sysdev main .sd-hero__index {
        padding-left: 0;
        border-left: 0;
    }
    body.page-sysdev main .sd-concerns__row {
        grid-template-columns: 4.8rem minmax(0, 1fr);
        gap: 2rem 1.6rem;
    }
    body.page-sysdev main .sd-concerns__answer {
        grid-column: 2;
        padding-left: 2rem;
        border-left: 2px solid var(--sd-accent);
    }
    body.page-sysdev main .sd-areas__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    body.page-sysdev main .sd-areas__item:not(:nth-child(3n + 1)) {
        padding-left: 0;
        border-left: 0;
    }
    body.page-sysdev main .sd-areas__item:nth-child(2n) {
        padding-left: 2.8rem;
        border-left: 1px solid var(--sd-line-dark);
    }
    body.page-sysdev main .sd-philosophy__cols {
        grid-template-columns: minmax(0, 1fr);
        gap: 2rem;
        margin-top: 4rem;
    }
    body.page-sysdev main .sd-after {
        margin-top: 6.4rem;
    }
    body.page-sysdev main .sd-after__list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    body.page-sysdev main .sd-ledger__row {
        grid-template-columns: minmax(0, 1fr);
        gap: 1.2rem;
    }
    body.page-sysdev main .sd-ledger__meta {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1.6rem;
    }
    body.page-sysdev main .sd-ledger__meta div + div {
        margin-top: 0;
    }
    body.page-sysdev main .sd-own__list {
        grid-template-columns: minmax(0, 1fr);
    }
    body.page-sysdev main .sd-own__list li + li {
        border-left: 0;
    }
    body.page-sysdev main .sd-own__list li + li a.sd-own__item {
        padding-left: 0;
    }
    body.page-sysdev main a.sd-own__item {
        padding: 2.4rem 0;
    }
    body.page-sysdev main .sd-price__cols {
        grid-template-columns: minmax(0, 1fr);
    }
    body.page-sysdev main .sd-price__col,
    body.page-sysdev main .sd-price__col + .sd-price__col {
        padding: 4rem 0;
        border-left: 0;
    }
    body.page-sysdev main .sd-price__col + .sd-price__col {
        border-top: 1px solid var(--sd-line);
    }
    body.page-sysdev main .sd-flow {
        grid-template-columns: minmax(0, 1fr);
        gap: 2.8rem;
    }
    body.page-sysdev main .sd-flow::before {
        top: 0.7rem;
        bottom: 0;
        left: 0.6rem;
        right: auto;
        width: 2px;
        height: auto;
        background: linear-gradient(180deg, #6c63ff, #3fc8ff, #9bdd4f);
    }
    body.page-sysdev main .sd-flow li {
        padding: 0 0 0 4rem;
    }
    body.page-sysdev main .sd-faq {
        margin-top: 8.8rem;
    }
    body.page-sysdev main .sd-prep {
        padding: 0;
        border-left: 0;
    }
}

/* style.css の「768px以下は h2 を 30px に固定（!important）」を、このページの見出しだけ上書きする */
@media (max-width: 768px) {
    body.page-sysdev main .sd-wrap {
        padding: 0 2rem;
    }
    body.page-sysdev main h2.sd-h2 {
        font-size: 3rem !important;
        line-height: 1.35;
    }
    body.page-sysdev main h2.sd-philosophy__title {
        font-size: clamp(3.6rem, 10.4vw, 5.2rem) !important;
        line-height: 1.2;
    }
    body.page-sysdev main h2.sd-contact__title {
        font-size: clamp(3.4rem, 9.6vw, 4.8rem) !important;
        line-height: 1.25;
    }
    body.page-sysdev main .sd-hero__title {
        font-size: clamp(3.8rem, 11vw, 5.6rem);
    }
    body.page-sysdev main .sd-hero__sub {
        font-size: 1.9rem;
    }
    body.page-sysdev main .sd-hero__lead {
        font-size: 1.6rem;
    }
    body.page-sysdev main .sd-crumb ol {
        margin-bottom: 3.2rem;
    }
    body.page-sysdev main .sd-hero__actions a.sd-btn {
        width: 100%;
    }
    body.page-sysdev main .sd-concerns__title {
        font-size: 2rem;
    }
    body.page-sysdev main .sd-inline-cta a.sd-btn {
        width: 100%;
    }
    body.page-sysdev main .sd-areas__grid {
        grid-template-columns: minmax(0, 1fr);
    }
    body.page-sysdev main .sd-areas__item,
    body.page-sysdev main .sd-areas__item:nth-child(2n) {
        padding: 3.2rem 0;
        border-left: 0;
    }
    body.page-sysdev main .sd-areas__no {
        font-size: 3.6rem;
    }
    body.page-sysdev main .sd-areas__name {
        margin-top: 1.6rem;
        font-size: 2rem;
    }
    body.page-sysdev main .sd-after__list {
        grid-template-columns: minmax(0, 1fr);
        gap: 2.4rem;
    }
    /* 役割の表はスマホでは工程ごとの縦積みにする */
    body.page-sysdev main .sd-roles__table thead {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
    }
    body.page-sysdev main .sd-roles__table,
    body.page-sysdev main .sd-roles__table :is(tbody, tr, th, td) {
        display: block;
        width: 100%;
    }
    body.page-sysdev main .sd-roles__table tr {
        padding: 2.4rem 0;
        border-bottom: 1px solid var(--sd-line);
    }
    body.page-sysdev main .sd-roles__table tbody :is(th, td) {
        padding: 0;
        border-bottom: 0;
    }
    body.page-sysdev main .sd-roles__table tbody th {
        width: 100%;
        margin-bottom: 1.2rem;
    }
    body.page-sysdev main .sd-roles__table td {
        display: grid;
        grid-template-columns: 7.2rem minmax(0, 1fr);
        gap: 1.2rem;
    }
    body.page-sysdev main .sd-roles__table td + td {
        margin-top: 0.8rem;
    }
    body.page-sysdev main .sd-roles__table td::before {
        content: attr(data-label);
        align-self: start;
        padding: 0.2rem 0;
        border-radius: 999px;
        font-size: 1.2rem;
        font-weight: 700;
        text-align: center;
        background: rgba(63, 200, 255, 0.16);
        color: #0369a1;
    }
    body.page-sysdev main .sd-roles__table td:last-child::before {
        background: var(--sd-ink);
        color: #fff;
    }
    body.page-sysdev main .sd-techlist__row {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.4rem;
    }
    body.page-sysdev main .sd-tech__aside {
        margin-top: 2.4rem;
    }
    body.page-sysdev main .sd-ledger__name {
        font-size: 1.9rem;
    }
    body.page-sysdev main .sd-ledger__meta {
        grid-template-columns: minmax(0, 1fr);
        gap: 1.2rem;
    }
    body.page-sysdev main .sd-price__name {
        font-size: 2.1rem;
    }
    body.page-sysdev main .sd-price__dl div {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.2rem;
    }
    body.page-sysdev main .sd-price__factors ul {
        grid-template-columns: minmax(0, 1fr);
    }
    body.page-sysdev main .sd-faq__q {
        font-size: 1.7rem;
    }
    body.page-sysdev main .sd-faq__a {
        padding-right: 0;
    }
    body.page-sysdev main .sd-routes strong {
        font-size: 2rem;
    }
    body.page-sysdev main .sd-routes a::after {
        font-size: 2.4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    body.page-sysdev main *,
    body.page-sysdev main *::before,
    body.page-sysdev main *::after {
        transition: none !important;
    }
}