.member-header { position: relative; }
.member-back { color: rgba(252, 253, 254, 0.82); font-size: 13px; font-weight: 700; }
.member-back:hover, .member-back:focus-visible { color: #fff; }

.profile-hero { padding: 88px 0 94px; }
.profile-hero-grid { display: grid; grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); align-items: center; gap: clamp(48px, 7vw, 110px); }
.profile-photo-wrap { max-width: 300px; background: #dae4ec; }
.profile-photo { display: block; width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: center top; }
.profile-photo-yiqun { aspect-ratio: 2 / 3; }
.profile-intro { max-width: 720px; }
.profile-intro h1 { margin: 0; font-size: clamp(56px, 6vw, 82px); line-height: 1.1; letter-spacing: -0.07em; }
.profile-intro h1 span { display: block; margin-top: 9px; color: #6b8aa6; font-size: clamp(26px, 3vw, 38px); font-weight: 500; letter-spacing: -0.04em; }
.profile-role { margin: 31px 0 2px; font-size: 18px; font-weight: 700; }
.profile-affiliation { margin: 0; color: var(--muted); font-size: 14px; }
.profile-lead { max-width: 620px; margin: 30px 0 27px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.profile-links { display: flex; flex-wrap: wrap; gap: 12px; }
.profile-links a { padding: 9px 13px; border: 1px solid var(--line); color: var(--accent-dark); font-size: 12px; font-weight: 700; }
.profile-links a:hover, .profile-links a:focus-visible { border-color: var(--accent-dark); background: #e6f2fd; }

.profile-content { display: grid; grid-template-columns: minmax(0, 1fr) 235px; gap: clamp(50px, 8vw, 110px); padding-top: 100px; padding-bottom: 130px; }
.profile-main { min-width: 0; }
.profile-section { padding: 40px 0 52px; border-top: 1px solid var(--line); }
.profile-section:first-child { padding-top: 0; border-top: 0; }
.profile-section-label { margin: 0 0 16px; color: var(--accent-dark); font-family: var(--mono); font-size: 10px; letter-spacing: 0.13em; }
.profile-section h2 { margin: 0 0 30px; font-size: clamp(30px, 3.5vw, 42px); line-height: 1.2; letter-spacing: -0.05em; }
.profile-section > p:not(.profile-section-label) { max-width: 760px; margin: 0 0 19px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.profile-section > p:last-child { margin-bottom: 0; }
.profile-timeline { border-top: 1px solid var(--line); }
.profile-timeline-item { display: grid; grid-template-columns: 175px minmax(0, 1fr); gap: 25px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.profile-timeline-item time { color: var(--accent-dark); font-family: var(--mono); font-size: 12px; }
.profile-timeline-item p { margin: 0; font-size: 15px; font-weight: 650; line-height: 1.7; }
.profile-timeline-item p span { color: var(--muted); font-size: 13px; font-weight: 400; }
.profile-entry { padding: 22px 0; border-top: 1px solid var(--line); }
.profile-entry-type { margin: 0 0 8px; color: var(--accent-dark); font-size: 12px; font-weight: 700; }
.profile-entry h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.5; }
.profile-entry > p:last-child { margin: 0; color: var(--muted); font-family: var(--mono); font-size: 11px; line-height: 1.8; }
.publication-group { margin-top: 34px; }
.publication-group .publication-topic { display: block; margin: 0 0 7px; color: var(--accent-dark); font-size: 11px; font-weight: 700; letter-spacing: 0.03em; line-height: 1.5; }
.publication-group ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.publication-group li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.publication-group cite { display: block; font-size: 14px; font-style: normal; font-weight: 600; line-height: 1.55; }
.publication-group li span { display: block; margin-top: 7px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.profile-sidebar { align-self: start; position: sticky; top: 32px; padding-top: 17px; border-top: 2px solid var(--accent-dark); }
.profile-sidebar-title { margin: 0 0 13px; font-size: 14px; font-weight: 700; }
.profile-sidebar ul { margin: 0; padding: 0; list-style: none; }
.profile-sidebar li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.6; }
.profile-sidebar-contact { display: grid; gap: 7px; margin-top: 32px; overflow-wrap: anywhere; }
.profile-sidebar-contact span { color: var(--muted); font-family: var(--mono); font-size: 10px; }
.profile-sidebar-contact a { color: var(--accent-dark); font-size: 12px; font-weight: 700; }
.profile-sidebar-contact a:hover { text-decoration: underline; }
.profile-footer { padding: 30px 0; }
.profile-footer-inner { display: flex; justify-content: space-between; gap: 20px; color: rgba(252, 253, 254, 0.65); font-size: 12px; }
.profile-footer-inner a:hover { color: #fff; }

@media (max-width: 900px) {
  .profile-hero { padding: 65px 0 72px; }
  .profile-hero-grid { grid-template-columns: 230px minmax(0, 1fr); gap: 40px; }
  .profile-content { grid-template-columns: 1fr; gap: 40px; padding-top: 75px; padding-bottom: 90px; }
  .profile-sidebar { position: static; }
}
@media (max-width: 650px) {
  .profile-hero-grid { grid-template-columns: 1fr; gap: 35px; }
  .profile-photo-wrap { width: min(100%, 260px); }
  .profile-intro h1 { font-size: 54px; }
  .profile-role { margin-top: 25px; }
  .profile-timeline-item { grid-template-columns: 1fr; gap: 4px; }
  .profile-footer-inner { flex-direction: column; }
}
@media (max-width: 560px) {
  .member-back { font-size: 12px; }
  .profile-hero { padding: 50px 0 65px; }
  .profile-content { padding-top: 65px; padding-bottom: 75px; }
  .profile-section { padding: 34px 0 42px; }
  .profile-section h2 { font-size: 32px; }
}