@charset "utf-8";
/* 研究トップ（research.html）。Codex のデザイン画 research.png（幅897→1024換算 ×1.14）。研究コラムのカードは column.css の部品を使う */
@import url("column.css");

.rs-in { width: calc(900 * var(--u)); margin: 0 auto; }
.rs-pillars { padding: calc(40 * var(--u)) 0 calc(64 * var(--u)); }
.rs-lead { text-align: center; font-family: var(--serif); font-weight: 600; font-size: calc(19 * var(--u)); line-height: 1.9; letter-spacing: .05em; color: var(--navy); }
.rs-sp { display: none; }
.rs-cards { display: flex; flex-direction: column; gap: calc(20 * var(--u)); margin-top: calc(36 * var(--u)); }
.rs-cards a { display: grid; grid-template-columns: calc(342 * var(--u)) minmax(0, 1fr); gap: calc(34 * var(--u)); align-items: center; padding: calc(8 * var(--u)); border-radius: calc(10 * var(--u)); background: #fff; border: 1px solid #E3EAF3; box-shadow: 0 calc(6 * var(--u)) calc(20 * var(--u)) rgba(30,53,96,.08); transition: box-shadow .2s; }
.rs-cards a:hover { box-shadow: 0 calc(10 * var(--u)) calc(28 * var(--u)) rgba(30,53,96,.16); }
.rs-card-img { display: block; height: calc(178 * var(--u)); border-radius: calc(6 * var(--u)); overflow: hidden; background: #EAF3FB; }
.rs-card-img img { width: 100%; height: 100%; object-fit: cover; }
.rs-card-body { display: flex; flex-direction: column; align-items: flex-start; gap: calc(10 * var(--u)); padding-right: calc(24 * var(--u)); }
.rs-card-head { display: flex; align-items: center; gap: calc(14 * var(--u)); }
.rs-num { display: inline-flex; align-items: center; justify-content: center; width: calc(44 * var(--u)); height: calc(34 * var(--u)); border: 1px solid #D9798F; border-radius: calc(3 * var(--u)); font-family: var(--latin); font-weight: 600; font-size: calc(20 * var(--u)); color: #C0566F; }
.rs-card-title { font-family: var(--serif); font-weight: 700; font-size: calc(29 * var(--u)); line-height: 1.3; letter-spacing: .04em; color: var(--navy); }
.rs-card-desc { font-size: calc(17 * var(--u)); line-height: 1.75; color: #2F3446; }
.rs-card-more { display: inline-flex; align-items: center; gap: calc(12 * var(--u)); margin-top: calc(4 * var(--u)); font-family: var(--serif); font-weight: 600; font-size: calc(18 * var(--u)); color: #A5844C; }
.rs-card-more::before { content: ""; width: calc(22 * var(--u)); height: 1.5px; background: currentColor; box-shadow: none; }
.rs-cards a:hover .rs-card-more { color: var(--navy); }

.rs-column { padding: calc(52 * var(--u)) 0 calc(60 * var(--u)); background: linear-gradient(180deg, #F2F7FC 0%, #fff 100%); }
.rs-h2 { display: flex; flex-direction: column; align-items: center; font-family: var(--serif); font-weight: 700; font-size: calc(36 * var(--u)); letter-spacing: .1em; color: var(--navy); }
.rs-h2 small { display: flex; align-items: center; gap: calc(18 * var(--u)); margin-top: calc(4 * var(--u)); font-family: var(--latin); font-weight: 600; font-size: calc(19 * var(--u)); letter-spacing: .06em; color: #A5844C; }
.rs-h2 small::before, .rs-h2 small::after { content: ""; width: calc(190 * var(--u)); height: 1px; background: var(--gold-1); }
.rs-col-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: calc(14 * var(--u)); width: calc(960 * var(--u)); margin: calc(30 * var(--u)) 0 0 calc(-30 * var(--u)); }
.rs-col-grid .cl-card-body { padding: calc(10 * var(--u)) calc(10 * var(--u)) calc(12 * var(--u)); }
.rs-col-grid .cl-card-title { font-size: calc(18 * var(--u)); }
.rs-col-grid .cl-arrow { display: none; }
.rs-col-grid .cl-thumb { height: calc(150 * var(--u)); }
.rs-col-grid .cl-thumb.is-text b { font-size: calc(19 * var(--u)); }
.rs-col-more { margin-top: calc(34 * var(--u)); text-align: center; }
.rs-col-more a { display: inline-flex; align-items: center; justify-content: center; gap: calc(14 * var(--u)); width: calc(306 * var(--u)); height: calc(46 * var(--u)); border: 1.5px solid var(--navy); border-radius: 999px; background: #fff; font-family: var(--serif); font-weight: 600; font-size: calc(16 * var(--u)); letter-spacing: .08em; color: var(--navy); transition: background .2s, color .2s; }
.rs-col-more a::after { content: "→"; font-family: var(--latin); }
.rs-col-more a:hover { background: var(--navy); color: #fff; }

/* ========== スマホ ========== */
@media (max-width: 1023px) {
	.rs-in { width: auto; max-width: 560px; padding: 0 16px; }
	.rs-pillars { padding: 26px 0 40px; }
	.rs-lead { font-size: 15px; text-align: left; }
	.rs-sp { display: inline; }
	.rs-cards { gap: 14px; margin-top: 20px; }
	.rs-cards a { grid-template-columns: 1fr; gap: 0; padding: 0; border-radius: 10px; overflow: hidden; }
	.rs-card-img { height: 150px; border-radius: 0; }
	.rs-card-body { gap: 8px; padding: 14px 16px 16px; }
	.rs-card-head { gap: 10px; }
	.rs-num { width: 34px; height: 26px; font-size: 15px; }
	.rs-card-title { font-size: 20px; }
	.rs-card-desc { font-size: 14px; }
	.rs-card-desc br { display: none; }
	.rs-card-more { font-size: 15px; gap: 10px; }
	.rs-card-more::before { width: 18px; }
	.rs-column { padding: 36px 0 40px; }
	.rs-h2 { font-size: 24px; }
	.rs-h2 small { font-size: 15px; gap: 12px; }
	.rs-h2 small::before, .rs-h2 small::after { width: 60px; }
	.rs-col-grid { grid-template-columns: 1fr; gap: 12px; width: auto; margin: 18px 0 0; }
	.rs-col-grid .cl-thumb { height: auto; }
	.rs-col-grid .cl-card-title { font-size: 16px; }
	.rs-col-more { margin-top: 22px; }
	.rs-col-more a { width: 100%; max-width: 300px; height: 46px; font-size: 15px; }
}