/* ===== Design tokens =====
   主題色為清華大學紫色（暫用常見色碼，請依正式品牌規範微調 --color-primary）。 */
:root {
  --color-bg: #000000;
  --color-bg-alt: #1a1129;
  --color-surface: #221735;
  --color-text: #f3f0f9;
  --color-text-muted: #b6abc9;
  --color-primary: #4b2e83;
  --color-primary-dark: #2c1a52;
  --color-primary-light: #6b46b3;
  --color-accent: #c9a4ff;
  --color-accent-dark: #a578f0;
  --color-accent-translucent: rgba(201, 164, 255, 0.5);
  --color-border: #332746;
  --header-height: 78px; /* 預設值，js/main.js 會在量到實際 nav-bar 高度後覆寫這個變數 */

  --font-base: "Inter", "Segoe UI", "Microsoft JhengHei", "PingFang TC", system-ui, sans-serif;

  --max-width: 1120px;
  --radius: 10px;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Nav ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  color: #fff;
  transition: background-color 0.25s ease;
}

/* 往下滾動時變淡一點，避免一直擋住內容閱讀；class 由 js/main.js 監聽 scroll 事件加上。 */
#site-header.is-scrolled {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  position: relative;
  transform: translateY(38px);
}

/* logo 兩側各自向左右延伸到畫面邊緣的紫色線，line 不會穿過 logo 本身。 */
.nav-brand::before,
.nav-brand::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 100vw;
  height: 1px;
  background: var(--color-accent);
}

.nav-brand::before {
  right: 100%;
}

.nav-brand::after {
  left: 100%;
}

.nav-brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}

.nav-logo {
  height: 48px;
  width: auto;
}

/* nav-links（頁面連結）跟 nav-actions（語言切換＋漢堡按鈕）包在同一個 nav-right 裡，
   這樣 .nav-bar 本身永遠只有 brand／nav-right 兩個 flex 子項，space-between 才會把
   nav-right 整體推到最右邊；漢堡選單收合的只是裡面的 nav-links，nav-actions 不受影響，
   所以語言切換按鈕在窄螢幕時仍然顯示在漢堡按鈕旁邊，不會被收進選單裡。 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: #ddd3ee;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
  text-decoration: none;
}

.nav-links a.active {
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 4px;
}

.lang-toggle {
  background-color: var(--color-accent-translucent);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
}

.lang-toggle:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

.nav-toggle-btn {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ===== Hero =====
   底圖：assets/img/hero/hero-cover.jpg。文字靠 text-shadow 維持可讀性，不疊加色塊。 */
.hero {
  background: var(--color-primary-dark) url("../assets/img/hero/hero-cover.jpg") center / cover no-repeat;
  color: #fff;
  height: calc(100vh - var(--header-height));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 10px;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
}

.hero-fullname {
  color: #fff;
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 28px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
}

/* ===== Sub-page banner（Research / Team / Publications / Contact 用） ===== */
.page-hero {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 56px 24px;
  text-align: center;
}

/* Research 頁面的 hero 換成有照片底圖的版本；圖片請放到 assets/img/research/research-hero.jpg，
   檔案不存在時會自動退回純色背景，不會報錯。 */
body[data-page="research"] .page-hero {
  background: var(--color-primary-dark) url("../assets/img/research/research-hero.jpeg") center / cover no-repeat;
  min-height: 360px;
}

/* Team 頁面的 hero 跟 Research 頁面一樣換成有照片底圖的版本；圖片請放到 assets/img/team/team-hero.jpg，
   檔案不存在時會自動退回純色背景，不會報錯。 */
body[data-page="team"] .page-hero {
  background: var(--color-primary-dark) url("../assets/img/team/team-hero.jpg") center / cover no-repeat;
  min-height: 360px;
}

/* Publications 頁面的 hero 跟 Research / Team 頁面一樣換成有照片底圖的版本；
   圖片請放到 assets/img/publications/publications-hero.jpg，檔案不存在時會自動退回純色背景，不會報錯。 */
body[data-page="publications"] .page-hero {
  background: var(--color-primary-dark) url("../assets/img/publications/publications-hero.jpg") center / cover no-repeat;
  min-height: 360px;
}

/* ===== Section layout ===== */
.section {
  padding: 72px 24px;
}

.section-alt {
  background: var(--color-bg);
}

.section-title {
  position: relative;
  font-size: 1.7rem;
  margin: 0 0 24px;
  padding-bottom: 8px;
  text-align: center;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 56px;
  height: 3px;
  background: rgb(194, 166, 249);
  border-radius: 2px;
  transform: translateX(-50%);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 0 40px;
}

/* ===== Cards / grid ===== */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

#research-preview-grid {
  margin-top: 40px;
}

.card {
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
}

.card-image {
  display: block;
  width: 100%;
  height: 160px;
  object-fit: cover;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.card:hover .card-image {
  opacity: 1;
}

.card-body {
  padding: 24px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--color-text);
  text-align: left;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  text-align: justify;
  margin: 0;
}

/* ===== Research 頁面：長文清單排版，不用卡片 ===== */
.research-intro {
  max-width: 860px;
  margin: 0 auto 56px;
  color: var(--color-text-muted);
  text-align: justify;
  line-height: 1.8;
}

.research-list {
  max-width: 860px;
  margin: 0 auto;
}

.research-topic {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

.research-topic:first-child {
  padding-top: 0;
}

/* ===== Publications 頁面：篩選列（年份／類型／作者搜尋，套用到下面三個清單） ===== */
.pub-filter-bar-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 0;
}

.pub-filter-bar {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.pub-filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.pub-filter-label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.pub-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pub-filter-chip {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.pub-filter-chip:hover {
  border-color: var(--color-accent);
  color: #fff;
}

.pub-filter-chip.active {
  background: var(--color-accent-translucent);
  border-color: var(--color-accent);
  color: #fff;
}

.pub-filter-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
}

.pub-filter-checkbox input {
  accent-color: var(--color-accent);
  cursor: pointer;
}

.pub-filter-search {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: #fff;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-family: inherit;
  min-width: 220px;
}

.pub-filter-search::placeholder {
  color: var(--color-text-muted);
}

.pub-filter-search:focus {
  outline: none;
  border-color: var(--color-accent);
}

.pub-filter-empty {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 0;
  color: var(--color-text-muted);
  text-align: center;
}

/* ===== Publications 頁面：清單外框（journals／conferences／patents 共用） ===== */
.publication-list {
  max-width: 860px;
  margin: 0 auto;
  padding-left: 0;
  list-style: none;
}

/* ===== Publications 頁面：論文卡片（journals 用封面/編號，conferences／patents 固定用編號） =====
   .journal-item／.pub-card-item 共用同一套版面骨架；文字排版（標題/作者/出處資訊/Link）共用
   .pub-card-title／.pub-card-authors／.pub-card-info／.pub-card-link 這幾個 class。 */
.journal-item,
.pub-card-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 16px;
  margin: 0 -16px;
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.journal-item:first-child,
.pub-card-item:first-child {
  margin-top: -24px;
}

.journal-item:hover,
.pub-card-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  background: var(--color-surface);
}

.journal-item:hover .pub-card-title,
.journal-item:hover .pub-card-authors,
.journal-item:hover .pub-card-info,
.pub-card-item:hover .pub-card-title,
.pub-card-item:hover .pub-card-authors,
.pub-card-item:hover .pub-card-info {
  color: #fff;
}

.journal-item:hover .pub-card-tag,
.pub-card-item:hover .pub-card-tag {
  color: #fff;
  border-color: #fff;
}

.journal-cover {
  flex: 0 0 96px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.journal-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.journal-cover .journal-number {
  display: none;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.4rem;
}

.journal-cover.no-cover .journal-number {
  display: block;
}

/* conferences／patents：不顯示圖片，固定用編號方塊 */
.pub-card-number {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.3rem;
}

.pub-card-flag {
  display: inline-block;
  width: 18px;
  height: auto;
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

.pub-card-tags {
  margin: 8px 0 0;
}

.pub-card-tag {
  display: inline-block;
  padding: 2px 10px;
  margin: 0 8px 8px 0;
  border: 1px solid var(--color-accent);
  border-radius: 999px;
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.6;
  vertical-align: middle;
}

.pub-card-body {
  flex: 1 1 auto;
  min-width: 0;
}

.pub-card-title {
  margin: 0 0 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  line-height: 1.5;
}

.pub-card-authors {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.pub-card-info {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.pub-card-link {
  margin-left: 4px;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

.pub-card-link:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.research-topic:last-child {
  border-bottom: none;
}

.research-topic h2 {
  position: relative;
  font-size: 1.5rem;
  margin: 0 0 24px;
  padding-bottom: 8px;
  text-align: center;
}

.research-topic h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 56px;
  height: 3px;
  background: rgb(194, 166, 249);
  border-radius: 2px;
  transform: translateX(-50%);
}

.research-image {
  display: block;
  max-width: 100%;
  margin: 0 auto 24px;
  border-radius: var(--radius);
}

.research-topic p {
  color: var(--color-text-muted);
  text-align: justify;
  line-height: 1.8;
  margin: 0 0 16px;
}

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

/* ===== Team 頁面：主持人區塊 + 成員卡片 ===== */
.team-pi {
  position: relative;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
  border-radius: var(--radius);
  background-color: transparent;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.team-pi:hover {
  transform: translateY(-4px);
  background-color: rgba(255, 255, 255, 0.05);
}

.team-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.team-pi-links {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  gap: 8px;
}

.team-pi-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent-translucent);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
}

.team-pi-link:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.team-pi-photo-wrap {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.team-pi-photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-pi-info h3 {
  margin: 0 0 2px;
  font-size: 1.6rem;
}

.team-pi-info p:not(.team-role) {
  color: var(--color-text-muted);
  margin: 0 0 8px;
}

.team-role {
  color: var(--color-accent);
  font-weight: 600;
  margin: 0 0 6px;
}

.team-extra {
  padding-left: 8px;
}

.team-member {
  display: flex;
  align-items: center;
  gap: 24px;
  text-align: left;
  padding: 16px;
  border-radius: var(--radius);
  background-color: transparent;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.team-member:hover {
  transform: translateY(-4px);
  background-color: rgba(255, 255, 255, 0.05);
}

.team-member-photo-wrap {
  flex-shrink: 0;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.team-member-photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-member h3 {
  margin: 0 0 2px;
  font-size: 1.6rem;
}

.team-meta {
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

/* ===== Funding cards（只放 logo + 單位名稱，置中對齊） ===== */
.funding-card .card-body {
  padding: 16px 20px;
}

.funding-card h3 {
  text-align: center;
  font-size: 0.95rem;
}

.funding-logo {
  display: block;
  width: calc(100% - 32px);
  height: 120px;
  margin: 16px auto 0;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.15);
  padding: 16px;
  border-radius: var(--radius);
}

/* ===== News list ===== */
.news-list {
  max-width: 760px;
  margin: 0 auto;
  list-style: none;
  padding: 0;
}

.news-item {
  display: flex;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-date {
  flex: 0 0 100px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.88rem;
}

.news-text {
  color: var(--color-text);
}

.news-item {
  cursor: pointer;
}

.news-item:hover .news-text {
  color: var(--color-accent);
}

.news-toggle-wrap {
  text-align: center;
  margin-top: 24px;
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}

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

/* ===== Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(8, 5, 14, 0.75);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal img {
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.modal .modal-date {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 8px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  background-color: var(--color-accent-translucent);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  font-weight: 600;
  padding: 11px 26px;
  border-radius: 999px;
  margin-top: 24px;
}

.btn:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
  text-decoration: none;
}

/* Contact 頁面的 hero 跟 Research / Team / Publications 頁面一樣換成有照片底圖的版本；
   圖片請放到 assets/img/contact/contact-hero.jpg，檔案不存在時會自動退回純色背景，不會報錯。 */
body[data-page="contact"] .page-hero {
  background: var(--color-primary-dark) url("../assets/img/contact/contact-hero.jpg") center / cover no-repeat;
  min-height: 360px;
}

/* ===== Contact 頁面：左側聯絡資訊＋右側地圖 ===== */
.contact-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.contact-info {
  flex: 1 1 320px;
}

.contact-block {
  margin-bottom: 28px;
}

.contact-label {
  margin: 0 0 4px;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-value {
  margin: 0 0 4px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.contact-map {
  flex: 1 1 420px;
}

.contact-map iframe {
  width: 100%;
  height: 360px;
  border: 0;
  border-radius: var(--radius);
}

/* ===== Footer ===== */
#site-footer {
  background: var(--color-bg);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding: 72px 24px 0;
  margin: 0;
  font-size: 0.88rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-inner a {
  color: #ddd3ee;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
}

.footer-bottom a {
  color: #ddd3ee;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 窄螢幕：封面圖換成編號 */
  .journal-cover img {
    display: none;
  }

  .journal-cover .journal-number {
    display: block;
  }

  /* .contact-layout 桌面版用 align-items: flex-start 讓左右兩欄不被拉成等高，但這個設定在
     flex-direction 變成 column 之後，交叉軸（這時候是水平方向）也會被影響，導致兩欄縮成
     內容本身的寬度，而不是撐滿整個畫面寬度（窄螢幕下「資訊／地圖只佔半個畫面」的成因）。
     這裡疊加 align-items: stretch 蓋掉，讓堆疊起來的兩欄都撐滿可用寬度。 */
  .contact-layout {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 640px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .nav-toggle-btn {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .team-pi,
  .team-member {
    flex-direction: column;
    text-align: center;
  }

  .team-extra {
    padding-left: 0;
  }

  /* 手機直式：隱藏作者群，只留標題和出處資訊 */
  .pub-card-authors {
    display: none;
  }

  .journal-cover,
  .pub-card-number {
    flex: 0 0 56px;
    width: 56px;
    height: 56px;
  }

  .journal-cover .journal-number,
  .pub-card-number {
    font-size: 1.1rem;
  }
}