:root{
  --bg:#faf7f1;
  --card:#ffffff;
  --text:#111827;
  --muted:#64748b;
  --line:rgba(229,231,235,.88);
  --blue:#1d4ed8;
  --blue2:#0b3aa6;
  --orange:#e95532;
  --orangeSoft:#fff3ee;
  --chip:#eaf0ff;
  --shadow:0 14px 34px rgba(15,23,42,.08);
  --radius:24px;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;

  font-family:
    "Noto Sans JP",
    system-ui,
    sans-serif;

  background:linear-gradient(
    180deg,
    #faf7f1 0%,
    #f6f1e7 100%
  );

  color:var(--text);
}

a{
  color:inherit;
}

.container{
  max-width:980px;
  margin:0 auto;
  padding:28px 14px 70px;
}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

/* 共通コラム記事 */
.columnArticle{
  padding:38px 32px;
}

.columnHero{
  display:block;
  padding-bottom:28px;
  border-bottom:1px solid rgba(229,231,235,.9);
}

.columnHeroImage{
  width:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  display:block;
  border-radius:22px;
  margin-bottom:36px;
  box-shadow:0 16px 36px rgba(15,23,42,.10);
  border:1px solid rgba(229,231,235,.9);
  overflow:hidden;
}.columnHeroBody{
  max-width:860px;
  margin:0 auto;
}

.columnAuthorPhoto{
  display:none;
}
.columnCategory{
  display:inline-flex;
  align-items:center;
  margin-bottom:14px;
  padding:7px 13px;
  border-radius:999px;
  background:var(--chip);
  border:1px solid rgba(29,78,216,.18);
  color:#173a8f;
  font-size:13px;
  font-weight:950;
}

.columnArticleTitle{
  margin:0;
  color:#0f2a5a;
  font-size:38px;
  line-height:1.35;
  letter-spacing:.02em;
  font-weight:950;
}

.columnMetaRow{
  margin-top:12px;
  color:var(--muted);
  font-size:14px;
  font-weight:850;
  line-height:1.7;
}

.columnContent{
  max-width:760px;
  margin:34px auto 0;
  font-size:17px;
  line-height:2.05;
  font-weight:650;
  color:#374151;
}

.columnContent p{
  margin:0 0 22px;
}

.columnContent strong{
  color:#0f2a5a;
  font-weight:950;
}

.columnContent h2{
  margin:48px 0 18px;
  padding-left:14px;
  border-left:5px solid var(--orange);
  color:#0f2a5a;
  font-size:28px;
  line-height:1.45;
  font-weight:950;
}

.columnContent h3{
  margin:34px 0 14px;
  color:#0f2a5a;
  font-size:22px;
  line-height:1.5;
  font-weight:950;
}

.columnContent ul{
  margin:0 0 24px;
  padding-left:1.4em;
}

.columnContent li{
  margin:7px 0;
  font-weight:850;
}

/* 強調ボックス */
.columnHighlight{
  margin:30px 0;
  padding:22px 24px;
  border-radius:22px;
  background:#f8fbff;
  border:1px solid rgba(37,99,235,.18);
  box-shadow:0 10px 24px rgba(15,23,42,.04);
}

.columnHighlight p{
  margin:0 0 10px;
  color:#0f2a5a;
  font-weight:950;
}

.columnHighlight img{
  width:100%;
  display:block;
  margin-top:14px;
  border-radius:16px;
  border:1px solid rgba(229,231,235,.9);
  box-shadow:0 10px 24px rgba(17,24,39,.08);
}

.columnHighlight p:last-child{
  margin-top:12px;
  margin-bottom:0;
  color:#475569;
  font-size:14px;
  line-height:1.8;
}

/* 記事内画像 */
.columnFigure{
  margin:34px 0;
}

.columnFigure img{
  width:100%;
  display:block;
  border-radius:20px;
  border:1px solid rgba(229,231,235,.9);
  box-shadow:0 12px 28px rgba(15,23,42,.08);
}

.columnFigure figcaption{
  margin-top:10px;
  color:#64748b;
  font-size:14px;
  line-height:1.7;
  font-weight:800;
  text-align:center;
}

.columnNote{
  padding:16px 18px;
  border-radius:18px;
  background:var(--orangeSoft);
  border:1px solid rgba(233,85,50,.24);
  color:#0f2a5a;
  font-weight:850;
}

.inlineLink{
  color:var(--blue);
  font-weight:950;
  text-decoration:none;
}

.inlineLink:hover{
  text-decoration:underline;
}

/* 著者プロフィール */
.columnAuthorBox{
  margin-top:26px;
  padding:26px;
}

.columnAuthorBox h2{
  margin:0 0 18px;
  text-align:center;
  color:#0f2a5a;
  font-size:24px;
  font-weight:950;
}

.columnAuthorProfile{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:18px;
  align-items:center;
  max-width:720px;
  margin:0 auto;
}

.columnAuthorProfile img{
  width:96px;
  height:96px;
  border-radius:22px;
  border:1px solid rgba(229,231,235,.9);
  object-fit:cover;
  display:block;
}

.columnAuthorProfile h3{
  margin:0 0 8px;
  color:#0f2a5a;
  font-size:22px;
  font-weight:950;
}

.columnAuthorProfile p{
  margin:0 0 12px;
  color:#374151;
  font-size:15px;
  line-height:1.8;
  font-weight:800;
}

/* ボタン */
.btn{
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  padding:12px 18px;
  border-radius:14px;
  border:1px solid rgba(229,231,235,.9);
  background:#fff;
  color:#0f2a5a;
  cursor:pointer;
  font-weight:900;
  text-decoration:none;
  transition:.15s transform ease, .15s background ease, .15s box-shadow ease;
}

.btn:hover{
  transform:translateY(-1px);
}

.btn.primary{
  background:linear-gradient(180deg,var(--blue) 0%,var(--blue2) 100%);
  color:#fff;
  border-color:rgba(29,78,216,.55);
  box-shadow:0 10px 24px rgba(29,78,216,.18);
}

.columnBackLinks{
  margin-top:22px;
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}

/* スマホ対応 */
@media(max-width:720px){
  .container{
    padding:20px 12px 56px;
  }

  .columnArticle{
    padding:26px 18px;
  }

  .columnHeroImage{
  border-radius:18px;
  margin-bottom:22px;
}

.columnHeroBody{
  text-align:left;
}
  .columnArticleTitle{
    font-size:28px;
  }

  .columnMetaRow{
    font-size:13px;
  }

  .columnContent{
    font-size:16px;
    line-height:1.95;
  }

  .columnContent h2{
    font-size:23px;
  }

  .columnContent h3{
    font-size:19px;
  }

  .columnHighlight{
    padding:18px 16px;
  }

  .columnAuthorBox{
    padding:22px 18px;
  }

  .columnAuthorProfile{
    grid-template-columns:72px 1fr;
    gap:14px;
    text-align:left;
  }

  .columnAuthorProfile img{
    width:72px;
    height:72px;
    border-radius:18px;
  }

  .columnAuthorProfile h3{
    font-size:19px;
  }

  .columnAuthorProfile p{
    font-size:14px;
  }

  .columnAuthorProfile .btn,
  .columnBackLinks .btn{
    width:100%;
  }
}


/* 全現役生共通の補助クラス */
.columnLead{
  margin:0 0 28px;
  color:#334155;
  font-size:18px;
  line-height:2;
  font-weight:750;
}

.columnQuote{
  margin:30px 0;
  padding:22px 24px;
  border-left:5px solid var(--blue);
  border-radius:0 18px 18px 0;
  background:#f8fbff;
  color:#0f2a5a;
  font-size:18px;
  line-height:1.9;
  font-weight:900;
}

.columnDivider{
  height:1px;
  margin:42px 0;
  background:rgba(229,231,235,.95);
  border:0;
}

.columnSourceList{
  margin-top:40px;
  padding:20px 22px;
  border-radius:18px;
  background:#f8fafc;
  border:1px solid var(--line);
}

.columnSourceList h2{
  margin:0 0 12px;
  padding:0;
  border:0;
  font-size:20px;
}

.columnSourceList ul{
  margin:0;
}

@media(max-width:720px){
  .columnLead{
    font-size:16px;
  }

  .columnQuote{
    padding:18px 16px;
    font-size:16px;
  }
}

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

.columnImageGrid img{
  width:100%;
  height:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
  display:block;
  border-radius:18px;
}

@media(max-width:720px){
  .columnImageGrid{
    grid-template-columns:1fr;
  }
}