:root {
  --green-950: #003737;
  --green-800: #0b4e4a;
  --green-100: #e8f0ee;
  --ink: #202625;
  --muted: #66706e;
  --line: #dce3e1;
  --surface: #f6f8f7;
  --white: #fff;
  --max-width: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; color:var(--ink); background:var(--white); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif; font-size:16px; line-height:1.85; }
a { color:var(--green-950); text-decoration-thickness:1px; text-underline-offset:.18em; }
a:hover { text-decoration:none; }
.container { width:min(calc(100% - 40px),var(--max-width)); margin-inline:auto; }
.skip-link { position:fixed; top:8px; left:8px; z-index:999; transform:translateY(-180%); padding:8px 12px; color:#fff; background:var(--green-950); }
.skip-link:focus { transform:translateY(0); }
.header-top { color:rgba(255,255,255,.84); background:var(--green-950); font-size:12px; letter-spacing:.035em; }
.header-top-inner { min-height:34px; display:flex; align-items:center; justify-content:space-between; gap:20px; }
.header-top p { margin:0; }
.language-link { color:#fff; text-decoration:none; }
.branding { display:flex; align-items:flex-end; justify-content:space-between; gap:28px; padding-block:25px 22px; }
.site-name { display:block; color:var(--green-950); font-size:clamp(25px,3.3vw,36px); font-weight:750; line-height:1.25; letter-spacing:.035em; text-decoration:none; }
.site-name-en { margin:4px 0 0; color:#7a8582; font-size:12px; letter-spacing:.09em; text-transform:uppercase; }
.tagline { margin:0 0 4px; color:var(--muted); font-size:14px; letter-spacing:.08em; }
.global-nav { border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:#fff; }
.nav-list { display:flex; align-items:stretch; margin:0; padding:0; list-style:none; }
.nav-list li { flex:1; }
.nav-list a { display:flex; align-items:center; justify-content:center; min-height:54px; padding:10px 8px; color:#31413f; border-bottom:3px solid transparent; font-size:14px; font-weight:650; text-decoration:none; white-space:nowrap; }
.nav-list a:hover,.nav-list a[aria-current="page"] { color:var(--green-950); border-bottom-color:var(--green-950); background:#fbfcfc; }
.nav-toggle { display:none; width:100%; min-height:48px; border:0; background:transparent; color:var(--green-950); font:inherit; font-weight:700; letter-spacing:.08em; cursor:pointer; }
.breadcrumb-wrap { background:var(--surface); border-bottom:1px solid #edf0ef; }
.breadcrumb { min-height:42px; display:flex; align-items:center; gap:10px; color:var(--muted); font-size:12px; }
.breadcrumb a { color:var(--muted); }
.page-main { padding-block:62px 90px; }
.page-header { max-width:850px; margin-bottom:54px; }
.page-kicker,.eyebrow { margin:0 0 7px; color:var(--green-800); font-size:12px; font-weight:750; letter-spacing:.16em; }
.page-header h1 { margin:0; color:var(--green-950); font-size:clamp(34px,5vw,50px); line-height:1.22; letter-spacing:.02em; }
.page-lead { margin:20px 0 0; max-width:760px; color:#44504e; font-size:17px; line-height:1.9; }
.content-section { max-width:980px; margin-top:66px; }
.content-section:first-of-type { margin-top:0; }
.content-section h2 { margin:0 0 26px; padding-bottom:12px; color:var(--green-950); border-bottom:2px solid var(--green-950); font-size:clamp(24px,3vw,30px); line-height:1.45; }
.content-section h3 { margin:0 0 10px; color:#263f3c; font-size:20px; line-height:1.55; }
.content-section p { margin:0 0 1.25em; }
.section-intro { max-width:820px; color:#55605e; }
.topic-list { border-top:1px solid var(--line); }
.topic-item { display:grid; grid-template-columns:70px 1fr; gap:22px; padding:28px 0; border-bottom:1px solid var(--line); }
.topic-item p:last-child { margin-bottom:0; }
.plain-grid { display:grid; gap:18px; }
.three-col { grid-template-columns:repeat(3,minmax(0,1fr)); }
.plain-grid > div { padding:24px; background:var(--surface); border-top:3px solid var(--green-800); }
.plain-grid h3 { font-size:18px; }
.section-heading-row { display:flex; align-items:baseline; justify-content:space-between; gap:24px; border-bottom:2px solid var(--green-950); margin-bottom:26px; }
.section-heading-row h2 { border:0; padding:0; margin:0 0 12px; }
.note { color:var(--muted); font-size:12px; }
.member-list { border-top:1px solid var(--line); }
.member-card { display:grid; grid-template-columns:minmax(220px,.8fr) 1.4fr; gap:34px; padding:28px 0; border-bottom:1px solid var(--line); }
.member-role { margin:0 0 3px!important; color:var(--green-800); font-size:13px; font-weight:700; }
.member-main h3 span { display:block; margin-top:2px; color:#87908e; font-size:13px; font-weight:500; }
.member-meta p { margin:0 0 4px; }
.year-block { display:grid; grid-template-columns:100px 1fr; gap:26px; padding:26px 0; border-top:1px solid var(--line); }
.year-block:last-child { border-bottom:1px solid var(--line); }
.year-block > h3 { font-size:18px; color:var(--green-800); }
.simple-list,.publication-list,.presentation-list { margin:0; padding-left:1.25em; }
.publication-list li,.presentation-list li { margin-bottom:24px; padding-left:4px; }
.pub-title { margin-bottom:4px!important; font-weight:650; }
.pub-detail,.meta-line { color:#5c6765; font-size:14px; }
.news-list { border-top:1px solid var(--line); }
.news-item { display:grid; grid-template-columns:110px 68px 1fr; gap:20px; align-items:start; padding:25px 0; border-bottom:1px solid var(--line); }
.news-item time { color:#65716e; font-size:13px; font-variant-numeric:tabular-nums; }
.news-tag { display:inline-block; margin:0!important; padding:2px 7px; border:1px solid #9eb4b0; color:var(--green-800); font-size:11px; text-align:center; }
.news-item h3 { font-size:17px; margin:0 0 5px; }
.news-item h3 a { text-decoration:none; }
.news-item div p { color:#66706e; font-size:14px; }
.archive-links { display:flex; flex-wrap:wrap; gap:10px; }
.archive-links a { min-width:82px; padding:8px 16px; border:1px solid var(--line); text-align:center; text-decoration:none; }
.button-link { display:inline-block; padding:10px 18px; color:#fff; background:var(--green-950); text-decoration:none; }
.callout { max-width:980px; padding:34px 38px; background:var(--surface); border-left:4px solid var(--green-800); }
.callout h2 { border:0; padding:0; margin-bottom:16px; }
.contact-lines { margin-top:20px; }
.contact-lines p { margin:4px 0; }
.address-block { padding:24px 28px; background:var(--surface); }
.map-placeholder { min-height:320px; margin-top:24px; display:grid; place-items:center; border:1px dashed #9ca9a6; background:#fafbfb; color:#7b8583; }
.access-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0; border-top:1px solid var(--line); }
.access-grid article { padding:25px 26px 20px 0; border-bottom:1px solid var(--line); }
.access-grid article:nth-child(odd) { padding-right:34px; border-right:1px solid var(--line); }
.access-grid article:nth-child(even) { padding-left:34px; }
.room-list { margin:0; }
.room-list > div { display:grid; grid-template-columns:170px 1fr; gap:20px; padding:14px 0; border-bottom:1px solid var(--line); }
.room-list dt { font-weight:700; }
.room-list dd { margin:0; }
.site-footer { color:#eaf0ef; background:var(--green-950); }
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr; gap:50px; padding-block:46px 36px; }
.footer-grid p { margin:2px 0; font-size:13px; }
.footer-title { margin-bottom:9px!important; color:#fff; font-size:17px!important; font-weight:700; }
.footer-links { display:grid; align-content:start; gap:7px; }
.footer-links p { color:#9fb8b4; font-size:11px; font-weight:700; letter-spacing:.15em; }
.footer-links a { color:#fff; font-size:13px; text-decoration:none; }
.copyright { padding-block:14px 20px; border-top:1px solid rgba(255,255,255,.16); }
.copyright p { margin:0; color:#9fb2af; font-size:11px; }
@media (max-width:760px) {
  .container { width:min(calc(100% - 28px),var(--max-width)); }
  .header-top p { display:none; }
  .header-top-inner { justify-content:flex-end; }
  .branding { display:block; padding-block:20px 18px; }
  .tagline { margin-top:7px; }
  .nav-toggle { display:block; }
  .nav-list { display:none; flex-direction:column; border-top:1px solid var(--line); }
  .nav-list.is-open { display:flex; }
  .nav-list li { flex:none; }
  .nav-list a { min-height:46px; border-bottom:1px solid #edf0ef; }
  .page-main { padding-block:42px 64px; }
  .page-header { margin-bottom:42px; }
  .page-lead { font-size:16px; }
  .three-col,.access-grid,.footer-grid { grid-template-columns:1fr; }
  .topic-item { grid-template-columns:42px 1fr; gap:14px; }
  .member-card,.year-block,.news-item,.room-list > div { grid-template-columns:1fr; gap:8px; }
  .news-item { gap:7px; }
  .news-tag { width:max-content; }
  .access-grid article,.access-grid article:nth-child(odd),.access-grid article:nth-child(even) { padding:22px 0; border-right:0; }
  .callout { padding:26px 22px; }
}

/* =========================
   Research topics accordion
========================= */

.topic-list {
  border-top: 1px solid #d7e0df;
}


/* details */
.topic-item {
  display: block;
  padding: 0;
  border-bottom: 1px solid #d7e0df;
}


/* summary */
.topic-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) 40px;
  gap: 24px;
  align-items: start;

  padding: 30px 0;

  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;

  list-style: none;
}


/* details標準の三角マークを消す */
.topic-trigger::-webkit-details-marker {
  display: none;
}

.topic-trigger::marker {
  content: "";
}


.topic-trigger:hover {
  background: rgba(7, 90, 86, 0.025);
}


/* 番号 */
.topic-trigger .eyebrow {
  margin: 4px 0 0;
  color: #075a56;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}


/* タイトル＋短い説明 */
.topic-heading {
  display: flex;
  flex-direction: column;
  gap: 10px;
}


/* 大見出し */
.topic-title {
  color: #173535;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.5;
}


.topic-summary {
  color: #415454;
  font-size: 0.96rem;
  line-height: 1.9;
}


/* =========================
   ＋ / −
========================= */

.topic-icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 6px;
}

.topic-icon::before,
.topic-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;

  background: #075a56;

  transform: translate(-50%, -50%);
  transition: opacity 0.2s ease;
}

.topic-icon::before {
  width: 18px;
  height: 1.5px;
}

.topic-icon::after {
  width: 1.5px;
  height: 18px;
}


/* detailsが開いたら縦線を消す → − */
.topic-item[open] .topic-icon::after {
  opacity: 0;
}


/* =========================
   展開部分
========================= */

.topic-panel {
  display: block;
}

.topic-panel-inner {
  padding: 4px 0 42px;
}


/* 展開内容は見出し部分より少し内側へ */
.topic-panel-inner > * {
  margin-left: 92px;
  margin-right: 64px;
}


/* 「タンパク質の構造変化から機能を理解する」 */
.topic-panel-inner h4 {
  margin-top: 0;
  margin-bottom: 18px;

  color: var(--green-950);

  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.6;
}


.topic-panel-inner p {
  margin-top: 0;
  margin-bottom: 32px;
  line-height: 2;
}


/* =========================
   Research examples
========================= */

.research-example-list {
  margin-top: 34px;
}


/* 各研究例 */
.research-example {
  display: block;
  padding: 36px 0 42px;
  border-top: 1px solid var(--line);
}


/* 最後だけ少し詰める */
.research-example:last-child {
  padding-bottom: 10px;
}


/* 小見出し */
.research-example h5 {
  margin: 0 0 22px;

  color: var(--green-950);

  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.6;
}


/* 図 */
.research-example-image {
  width: 100%;
  max-width: 620px;

  margin: 0 auto 24px;
}

.research-example-image img {
  display: block;
  width: 100%;
  height: auto;
}


/* 本文 */
.research-example p {
  margin: 0;
  max-width: none;
  line-height: 2;
}

.research-papers {
  width: fit-content;
  max-width: 75%;
  margin: 24px 0 0 auto;
  padding-top: 18px;
  border-top: 1px solid #e5e9e8;
}

.research-papers-label {
  margin: 0 0 10px !important;
  color: #668f8a;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.research-papers ul {
  margin: 0;
  padding-left: 1.2em;
}

.research-papers li {
  margin: 6px 0;
  color: #566261;
  font-size: 0.88rem;
  line-height: 1.7;
}

.research-papers a {
  color: #466e6a;
  text-decoration: none;
}

.research-papers a:hover {
  text-decoration: underline;
}


/* =========================
   Mobile
========================= */

@media (max-width: 700px) {

  .topic-trigger {
    grid-template-columns: 40px minmax(0, 1fr) 28px;
    gap: 12px;
    padding: 24px 0;
  }

  .topic-title {
    font-size: 1.18rem;
  }

  .topic-summary {
    font-size: 0.9rem;
  }

  .topic-panel-inner {
    padding-bottom: 32px;
  }

  .topic-panel-inner > * {
    margin-left: 52px;
    margin-right: 20px;
  }

  .topic-panel-inner h4 {
    font-size: 1.15rem;
  }

  .research-example {
    padding: 28px 0 32px;
  }

  .research-example h5 {
    font-size: 1.05rem;
  }

  .research-example-image {
    max-width: 100%;
    margin-bottom: 20px;
  }

}

/* =========================
   Beamline
========================= */

.beamline-block {
  padding-top: 4px;
}

.beamline-heading {
  margin-bottom: 22px;
}

.beamline-label {
  margin: 0 0 4px !important;
  color: #668f8a;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.beamline-heading h3 {
  margin: 0;
  color: var(--green-950);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.5;
}

/* 説明文 */
.beamline-text {
  max-width: none;
  margin-left: max(0px, calc((100% - 820px) / 2));
  margin-right: 0;
  line-height: 2;
}

.beamline-image {
  width: 100%;
  max-width: 820px;
  margin: 32px auto 24px;
}

.beamline-image img {
  display: block;
  width: 100%;
  height: auto;
}

.beamline-contact {
  margin-top: 18px !important;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
}

.beamline-contact a {
  font-weight: 600;
}


/* =========================
   Header brand mark
========================= */

.brand-main {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-mark {
  display: block;
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.brand-text {
  min-width: 0;
}

@media (max-width: 768px) {

  .brand-main {
    gap: 11px;
  }

  .brand-mark {
    width: 54px;
    height: 54px;
  }

}

/* =========================
   Faculty
========================= */

.faculty-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}


/* 教員1名分のカード */
.faculty-card {
  padding: 28px 30px 30px;
  background: #ffffff;
  border: 1px solid #d9e3e3;
  border-radius: 16px;
  box-shadow: 0 5px 16px rgba(0, 0, 0, 0.035);
}


/* =========================
   上段：写真＋プロフィール
========================= */

.faculty-profile {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 36px;
  align-items: start;
}


/* 写真 */
.faculty-card .member-photo {
  width: 250px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 12px;
  background: #f2f4f4;
}

.faculty-card .member-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
}


/* =========================
   プロフィール
========================= */


/* 上段：写真＋プロフィール */
.faculty-profile {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 32px;
  align-items: stretch;
}


/* 右側プロフィール */
.faculty-info {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding-top: 2px;
}


/* 肩書 */
.faculty-card .member-role {
  margin: 0 0 7px;
  font-size: 1.05rem;
  line-height: 1.4;
  font-weight: 700;
  color: #08736d;
}


/* 名前 */
.faculty-name {
  margin: 0 0 17px;
  font-size: 1.6rem;
  line-height: 1.3;
  color: #003c3c;
}

.faculty-name span {
  margin-left: 10px;
  font-size: 1rem;
  font-weight: 500;
  color: #687979;
}


/* 基本情報 */
.faculty-meta {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.5;
}

.faculty-meta div {
  display: grid;
  grid-template-columns: 4em 1fr;
  column-gap: 12px;
  margin: 7px 0;
}

.faculty-meta dt {
  font-weight: 700;
  color: #222;
}

.faculty-meta dd {
  margin: 0;
}


/* リンク
   margin-top: auto で写真の下端側へ送る */
.faculty-card .member-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin-top: auto;
  padding-top: 16px;
  font-size: 1rem;
}


/* =========================
   下段：研究紹介
========================= */

.faculty-research {
  margin-top: 24px;
  padding: 18px 22px 20px;
  background: #f6fafa;
  border: 1px solid #d8e5e5;
  border-radius: 11px;
}

.faculty-research h4 {
  margin: 0 0 12px;
  padding: 0;
  border: none;
  font-size: 1.05rem;
  line-height: 1.4;
  font-weight: 700;
  color: #003c3c;
}

.faculty-research p {
  margin: 0 0 11px;
  font-size: 0.97rem;
  line-height: 1.85;
}

.faculty-research p:last-child {
  margin-bottom: 0;
}

.career-box {
  margin-top: 24px;
  padding: 24px 28px;

  border: 1px solid rgba(0, 75, 73, 0.28);
  border-radius: 8px;

  background: rgba(0, 75, 73, 0.035);
}

.career-box p {
  margin: 0;
  line-height: 2;
}

/* =========================
   タブレット・スマホ
========================= */

@media (max-width: 700px) {

  .faculty-card {
    padding: 22px 20px 24px;
  }

  .faculty-profile {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .faculty-card .member-photo {
    width: 100%;
    max-width: 280px;
  }

  .faculty-name span {
    display: block;
    margin: 3px 0 0;
  }

  .faculty-research {
    margin-top: 22px;
    padding: 16px 18px 18px;
  }
}


/* =========================
   Students
========================= */

.student-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 28px;
}

.student-card {
  min-width: 0;
}

.student-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 8px;
  background: #f2f4f4;
}

.student-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
}


/* 写真から名前まで */
.student-body {
  padding-top: 12px;
}


/* 名前 */
.student-body h3 {
  margin: 0;
  font-size: 1.28rem;
  line-height: 1.35;
  font-weight: 700;
  color: #003c3c;
}


/* 英語名：日本語名の横 */
.student-body h3 span {
  margin-left: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #536666;
}


/* =========================
   Students
========================= */

.student-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 22px;
}


/* 学生1名分のカード */
.student-card {
  min-width: 0;
  padding: 10px;
  background: #ffffff;
  border: 1px solid #dbe5e5;
  border-radius: 14px;
}


/* =========================
   写真
========================= */

.student-photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 9px;
  background: #f2f4f4;
}

.student-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
}

.student-body {
  padding: 14px 12px 10px;
}


/* =========================
   写真下のプロフィール
========================= */

.student-body {
  padding: 14px 16px 16px;
}


/* 名前 */
.student-body h3 {
  margin: 0;
  font-size: 1.28rem;
  line-height: 1.35;
  font-weight: 700;
  color: #003c3c;
}


/* 英語名 */
.student-body h3 span {
  margin-left: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #536666;
}


/* 学年 */
.student-course {
  margin: 3px 0 10px;
  font-size: 1.02rem;
  line-height: 1.35;
  font-weight: 600;
  color: #08736d;
}


/* =========================
   出身・研究
========================= */

.student-info {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.45;
}

.student-info div {
  display: grid;
  grid-template-columns: 3.2em 1fr;
  column-gap: 10px;
  margin: 4px 0;
}

.student-info dt {
  font-weight: 700;
  color: #222;
}

.student-info dd {
  margin: 0;
  color: #444;
}


/* =========================
   タブレット
========================= */

@media (max-width: 900px) {

  .student-grid {
    grid-template-columns: repeat(2, 1fr);
  }

}


/* =========================
   スマートフォン
========================= */

@media (max-width: 600px) {

  .student-grid {
    grid-template-columns: 1fr;
  }

}


/* =========================
   Achievements
========================= */

.page-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0 64px;
}

.page-index a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 130px;
  padding: 10px 22px;
  border: 1px solid #d8dddd;
  border-radius: 999px;
  color: #263536;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition: 0.2s ease;
}

.page-index a:hover {
  border-color: #668f8a;
  background: #f3f8f7;
  color: #386d68;
}


/* Section heading */

.achievement-section {
  margin-top: 72px;
}

.section-heading {
  margin-bottom: 40px;
}

.section-label {
  margin: 0 0 5px;
  color: #668f8a;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.section-heading h2 {
  margin: 0;
}


/* Year */

.year-block {
  margin-top: 44px;
}

.year-block + .year-block {
  margin-top: 64px;
}

.year-heading {
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #dfe4e3;
  color: #2e4d4b;
  font-size: 1.4rem;
  font-weight: 600;
}


/* Publications */

.publication-list {
  margin: 0;
  padding-left: 3rem;
}

.publication-item {
  position: relative;
  padding: 6px 0 30px 12px;
}

.publication-item + .publication-item {
  padding-top: 28px;
  border-top: 1px solid #edf0ef;
}

.publication-item::marker {
  color: #789994;
  font-size: 0.9rem;
  font-weight: 700;
}

.pub-title {
  margin: 0 0 8px;
  color: #263536;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.7;
}

.pub-authors {
  margin: 0 0 4px;
  color: #566261;
  font-size: 0.91rem;
  line-height: 1.7;
}

.pub-detail {
  margin: 0;
  color: #6a7473;
  font-size: 0.9rem;
  line-height: 1.7;
}

.doi-link {
  display: inline-block;
  margin-top: 9px;
  color: #407b75;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.doi-link::after {
  content: " →";
}

.doi-link:hover {
  text-decoration: underline;
}

/* =========================
   Press Releases
========================= */

.press-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.press-item {
  padding: 20px 0;
}

.press-item + .press-item {
  border-top: 1px solid #edf0ef;
}

.press-date {
  margin: 0 0 5px;
  color: #7a8583;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.press-title {
  margin: 0 0 5px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.7;
}

.press-title a {
  color: #263536;
  text-decoration: none;
}

.press-title a:hover {
  color: #407b75;
  text-decoration: underline;
}

.press-source {
  margin: 0;
  color: #707b79;
  font-size: 0.86rem;
}


/* Presentations */

.presentation-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.presentation-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid #e6e9e8;
}

.presentation-title {
  margin: 0 0 7px;
  color: #263536;
  line-height: 1.7;
}

.meta-line {
  margin: 0;
  color: #747e7d;
  font-size: 0.86rem;
  line-height: 1.7;
}

.presentation-type {
  flex-shrink: 0;
  margin-top: 2px;
  padding: 5px 11px;
  border: 1px solid #bfd0cd;
  border-radius: 999px;
  color: #547773;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.presentation-type.invited {
  background: #eef6f4;
  border-color: #9dbdb8;
  color: #376b65;
}


/* =========================
   Achievement Category Accordion
========================= */

.category-accordion {
  max-width: 980px;
  margin: 18px 0;
  border: 1px solid #dfe5e4;
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

.category-summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 92px;
  padding: 22px 68px 22px 28px;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.category-summary::-webkit-details-marker {
  display: none;
}

.category-summary:hover {
  background: #f5f9f8;
}

.category-heading {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.category-label {
  color: #668f8a;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.category-title {
  color: #263f3d;
  font-size: 1.45rem;
  font-weight: 650;
  line-height: 1.4;
}

.category-summary::after {
  content: "+";
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  color: #5d817c;
  font-size: 1.8rem;
  font-weight: 300;
  line-height: 1;
}

.category-accordion[open] > .category-summary {
  background: #f5f9f8;
  border-bottom: 1px solid #e0e7e5;
}

.category-accordion[open] > .category-summary::after {
  content: "−";
}

.category-content {
  padding: 20px 28px 30px;
}

.category-content > .year-accordion:first-child {
  margin-top: 0;
}

@media (max-width: 700px) {
  .category-summary {
    min-height: 78px;
    padding: 18px 54px 18px 20px;
  }

  .category-summary::after {
    right: 20px;
  }

  .category-title {
    font-size: 1.25rem;
  }

  .category-content {
    padding: 14px 18px 24px;
  }
}

/* =========================
   Year Accordion
========================= */

.year-accordion {
  margin-top: 14px;
  border-top: 1px solid #dfe5e4;
}

.year-accordion:last-child {
  border-bottom: 1px solid #dfe5e4;
}


/* 年度部分 */

.year-accordion summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 48px 20px 4px;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.year-accordion summary::-webkit-details-marker {
  display: none;
}

.year-accordion summary:hover {
  background: #f6f9f8;
}


/* 年 */

.year-number {
  color: #294c49;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}


/* 件数 */

.year-count {
  color: #889290;
  font-size: 0.78rem;
}


/* ＋ / − */

.year-accordion summary::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: #618680;
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
}

.year-accordion[open] summary::after {
  content: "−";
}


/* 開いた部分 */

.year-content {
  padding: 4px 4px 28px;
}


/* publication */

.publication-list {
  margin: 0;
  padding-left: 3rem;
}

.publication-item {
  padding: 18px 0 24px 10px;
}

.publication-item + .publication-item {
  border-top: 1px solid #edf0ef;
}

.publication-item::marker {
  color: #789994;
  font-size: 0.85rem;
  font-weight: 700;
}

.pub-title {
  margin: 0 0 7px;
  color: #253635;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.7;
}

.pub-authors {
  margin: 0 0 3px;
  color: #596563;
  font-size: 0.9rem;
  line-height: 1.7;
}

.pub-detail {
  margin: 0;
  color: #707b79;
  font-size: 0.88rem;
  line-height: 1.7;
}

.doi-link {
  display: inline-block;
  margin-top: 8px;
  color: #407b75;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.doi-link::after {
  content: " →";
}

/* =========================
   Awards
========================= */

.award-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.award-item {
  padding: 22px 0 26px;
}

.award-item + .award-item {
  border-top: 1px solid #edf0ef;
}

.award-main {
  position: relative;
}

.award-title {
  margin: 0 0 7px;
  color: #263536;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.7;
}

.award-recipient {
  margin: 0 0 5px;
  color: #4d5c5a;
  font-size: 0.92rem;
  line-height: 1.7;
}

.award-detail {
  margin: 0 0 5px;
  color: #596563;
  font-size: 0.9rem;
  line-height: 1.7;
}

.award-item .meta-line {
  margin-top: 4px;
}


/* Mobile */

@media (max-width: 700px) {

  .award-item {
    padding: 18px 0 22px;
  }

  .award-title {
    font-size: 0.98rem;
  }

}

/* Mobile */

@media (max-width: 700px) {

  .year-accordion summary {
    padding: 18px 42px 18px 2px;
  }

  .year-number {
    font-size: 1.2rem;
  }

  .publication-list {
    padding-left: 2.2rem;
  }

}

/* Mobile */

@media (max-width: 700px) {

  .page-index {
    margin-bottom: 48px;
  }

  .publication-list {
    padding-left: 2.3rem;
  }

  .publication-item {
    padding-left: 4px;
  }

  .presentation-item {
    display: block;
  }

  .presentation-type {
    display: inline-block;
    margin-top: 12px;
  }

}




.student-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}


.student-feature-card {
  background: #f5f7f7;
  border-top: 3px solid #005c5c;
  padding: 12px 12px 0;
}

.student-feature-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 8px;
}

.student-feature-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.student-feature-body {
  padding: 22px 18px 26px;
}

.student-feature-number {
  margin: 0 0 14px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #006b67;
}

.student-feature-body h3 {
  margin: 0 0 12px;
  font-size: 1.15rem;
  color: #003c3c;
}

.student-feature-body p:last-child {
  margin: 0;
  line-height: 1.9;
}


/* タブレット */
@media (max-width: 800px) {
  .student-feature-grid {
    grid-template-columns: 1fr;
  }

  .student-feature-image {
    aspect-ratio: 16 / 7;
  }
}