/* =========================================================================
 * NESM — CNU brand overrides
 * 충남대학교 공식 CI 색상 가이드(군청 + 노란 + 주황) 기반 팔레트.
 * 공식 HEX는 CNU 대외협력본부(042-821-6992) 비공개 — 표준 근사값 사용.
 * Loaded after style.css to amplify the opening impression.
 * ========================================================================= */

@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css");
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");

:root {
  /* 전용색상: 군청색 (Ultramarine / Pantone 287C 근사) */
  --cnu-blue: #003F87;
  --cnu-blue-deep: #002D72;
  --cnu-blue-tint: #1E5AA8;
  --cnu-blue-soft: #E7EEF7;

  /* 보조색상: 따뜻한 노란색 · 주황색 */
  --cnu-gold: #F6B42D;
  --cnu-orange: #F48024;
  --cnu-red: #B4272B;  /* 포인트 */
}

/* 공통 accent 변수 덮어쓰기 */
:root {
  --c-accent: var(--cnu-blue);
  --c-accent-2: var(--cnu-blue-tint);
}
html[data-theme="dark"] {
  --c-accent: #7FB2FF;
  --c-accent-2: #4A8FE0;
}

/* =========================================================================
 * Typography — 모던한 깔끔함: Pretendard 기반
 * ========================================================================= */
:root {
  --font-sans-kr: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Inter', sans-serif;
  --font-serif-kr: 'Noto Serif KR', serif;
  --font-display: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  font-family: var(--font-sans-kr);
  font-feature-settings: "palt", "kern", "ss01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  font-weight: 800;
}

/* ============================== HERO ==================================== */
.hero.hero-cnu {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 8rem 6vw 6rem;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(0, 63, 135, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(246, 180, 45, 0.06) 0%, transparent 55%),
    var(--c-bg);
}

html[data-theme="dark"] .hero.hero-cnu {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(127, 178, 255, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(246, 180, 45, 0.05) 0%, transparent 55%),
    var(--c-bg);
}

.hero.hero-cnu .hero-inner {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero.hero-cnu .hero-eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cnu-blue);
  margin-bottom: 0.5rem;
}

html[data-theme="dark"] .hero.hero-cnu .hero-eyebrow { color: #8FC0FF; }

.hero.hero-cnu .hero-title-ko,
.hero.hero-cnu .hero-title-en {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 9vw, 9rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  margin: 0;
  color: var(--c-text);
  word-break: keep-all;
  font-feature-settings: "ss01";
}

.hero.hero-cnu h1 .line {
  display: block;
}

.hero.hero-cnu h1 .accent {
  color: var(--cnu-blue);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.055em;
  background: linear-gradient(120deg, var(--cnu-blue) 0%, var(--cnu-blue-tint) 60%, var(--cnu-gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme="dark"] .hero.hero-cnu h1 .accent {
  color: #8FC0FF;
}

.hero.hero-cnu .hero-subtitle {
  font-family: var(--font-sans-kr);
  font-size: clamp(1.05rem, 1.4vw, 1.35rem);
  line-height: 1.6;
  color: var(--c-text-light);
  max-width: 680px;
  margin: 0.5rem 0 0;
  font-weight: 450;
  letter-spacing: -0.015em;
  word-break: keep-all;
}

.hero.hero-cnu .hero-cta {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.hero.hero-cnu .hero-cta .btn-primary {
  background: var(--cnu-blue);
  color: #fff;
  border-color: var(--cnu-blue);
}

.hero.hero-cnu .hero-cta .btn-primary:hover {
  background: var(--cnu-blue-deep);
  border-color: var(--cnu-blue-deep);
}

.hero.hero-cnu .hero-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  color: var(--c-text-light);
}

.hero.hero-cnu .hero-meta .stat .n {
  color: var(--c-text);
  font-weight: 600;
}

.hero.hero-cnu .hero-meta .lbl {
  margin-left: 0.25rem;
  opacity: 0.75;
}

.hero.hero-cnu .hero-meta .sep {
  opacity: 0.4;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-text-light);
  opacity: 0.6;
  animation: hero-hint-bob 2.4s ease-in-out infinite;
}

@keyframes hero-hint-bob {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.5; }
  50% { transform: translate(-50%, 4px); opacity: 0.9; }
}

@media (max-width: 720px) {
  .hero.hero-cnu { padding: 6rem 5vw 5rem; }
  .hero.hero-cnu .hero-title-ko,
  .hero.hero-cnu .hero-title-en {
    font-size: clamp(2.5rem, 12vw, 4.2rem);
  }
  .hero-scroll-hint { display: none; }
}

/* ============================== NAV brand tint ========================== */
.site-header .nav-brand {
  color: var(--cnu-blue) !important;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
}
html[data-theme="dark"] .site-header .nav-brand { color: #8FC0FF !important; }
.site-header .nav-brand .dot { color: var(--cnu-gold); }

.site-header .nav-links a.active {
  color: var(--cnu-blue);
  border-bottom: 2px solid var(--cnu-gold);
}
html[data-theme="dark"] .site-header .nav-links a.active { color: #8FC0FF; }

/* ============================== PAGE HEADERS ============================ */
.page-header {
  background: linear-gradient(180deg, var(--cnu-blue-soft) 0%, transparent 100%);
  padding-block: 6rem 4rem;
}
html[data-theme="dark"] .page-header {
  background: linear-gradient(180deg, rgba(0, 63, 135, 0.15) 0%, transparent 100%);
}
.page-header .eyebrow {
  color: var(--cnu-blue);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
html[data-theme="dark"] .page-header .eyebrow { color: #8FC0FF; }
.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1;
  margin: 0;
  color: var(--c-text);
}
.page-header p {
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--c-text-light);
  margin-top: 1.25rem;
  max-width: 640px;
}

/* ============================== SECTION titles ========================== */
.section-title h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
}
.section-title .eyebrow {
  color: var(--cnu-blue);
}
html[data-theme="dark"] .section-title .eyebrow { color: #8FC0FF; }

/* ============================== ABOUT PI inline ========================= */
.about-pi { padding-block: 7rem; }
.pi-inline {
  max-width: 960px;
  margin: 0 auto;
}
.pi-inline-text .eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cnu-blue);
  margin-bottom: 0.5rem;
}
html[data-theme="dark"] .pi-inline-text .eyebrow { color: #8FC0FF; }
.pi-inline-text h2 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 1rem;
}
.pi-inline-title {
  font-size: 1.05rem;
  color: var(--c-text-light);
  margin: 0 0 1.5rem;
}
.pi-inline-bio {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--c-text);
  max-width: 760px;
  margin: 0 0 2rem;
  word-break: keep-all;
}
.pi-inline-bio strong { color: var(--cnu-blue); font-weight: 600; }
html[data-theme="dark"] .pi-inline-bio strong { color: #8FC0FF; }
.pi-inline-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ============================== RESEARCH scroll-snap ==================== */
.research-snap-section {
  min-height: 100vh;
  padding: 10vh 6vw;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--c-border);
  position: relative;
}
.research-snap-section:nth-child(odd) {
  background: var(--c-bg);
}
.research-snap-section:nth-child(even) {
  background: var(--cnu-blue-soft);
}
html[data-theme="dark"] .research-snap-section:nth-child(even) {
  background: rgba(0, 63, 135, 0.08);
}
.research-snap-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: center;
}
.research-snap-visual {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cnu-blue);
  opacity: 0.82;
}
.research-snap-visual svg {
  width: 100%;
  height: auto;
  max-width: 420px;
}
html[data-theme="dark"] .research-snap-visual {
  color: #8FC0FF;
}
.research-snap-content .eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cnu-gold);
  margin-bottom: 1rem;
  font-weight: 600;
}
.research-snap-content h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 1.2rem;
}
.research-snap-content p {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--c-text);
  margin: 0 0 1.5rem;
  max-width: 560px;
  word-break: keep-all;
}
.research-snap-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.research-snap-keywords .kw {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--c-border);
  border-radius: 999px;
  color: var(--c-text-light);
}
.research-snap-summary { font-size: 1.2rem; line-height: 1.6; color: var(--c-text); margin: 0 0 1.5rem; }
.research-snap-summary strong { font-weight: 600; }
.research-snap-detail { font-size: 0.98rem; line-height: 1.75; color: var(--c-text-light); margin: 0 0 1.5rem; max-width: 620px; }
.research-snap-papers ul { list-style: none; padding: 0; margin: 0.5rem 0 0; }
.research-snap-papers li {
  font-size: 0.88rem;
  line-height: 1.55;
  padding: 0.45rem 0;
  border-top: 1px solid var(--c-border);
  color: var(--c-text);
}
.research-snap-papers li:first-child { border-top: none; padding-top: 0; }
.research-snap-papers .pp-venue { color: var(--c-text-light); font-style: italic; }

@media (max-width: 900px) {
  .research-snap-inner {
    grid-template-columns: 1fr !important;
    gap: 2.5rem;
    direction: ltr !important;
  }
  .research-snap-visual {
    max-width: 260px;
    margin: 0 auto;
  }
  .research-snap-section { padding: 8vh 5vw; min-height: auto; }
  .research-snap-content > * { direction: ltr !important; }
}

/* ============================== CTA / Buttons =========================== */
.btn-primary {
  background: var(--cnu-blue);
  color: #fff;
  border-color: var(--cnu-blue);
}
.btn-primary:hover {
  background: var(--cnu-blue-deep);
  border-color: var(--cnu-blue-deep);
  color: #fff;
}
.btn-outline {
  border-color: var(--cnu-blue);
  color: var(--cnu-blue);
}
.btn-outline:hover {
  background: var(--cnu-blue);
  color: #fff;
}
html[data-theme="dark"] .btn-outline {
  border-color: #8FC0FF;
  color: #8FC0FF;
}

/* ============================== Featured/Topic cards ==================== */
.topic-card:hover,
.featured-card:hover {
  border-color: var(--cnu-blue);
  box-shadow: 0 8px 28px rgba(0, 63, 135, 0.12);
}
.topic-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--cnu-blue);
}
html[data-theme="dark"] .topic-card h3 { color: #8FC0FF; }

.topic-card .kw {
  background: var(--cnu-blue-soft);
  color: var(--cnu-blue);
  border-color: transparent;
}
html[data-theme="dark"] .topic-card .kw {
  background: rgba(0, 63, 135, 0.25);
  color: #8FC0FF;
}

.topic-cta,
.featured-card .year {
  color: var(--cnu-gold);
  font-weight: 600;
}

/* ============================== Join card =============================== */
.join-card {
  background: linear-gradient(135deg, var(--cnu-blue) 0%, var(--cnu-blue-deep) 100%);
  color: #fff;
  border-color: transparent;
}
.join-card h3,
.join-card p { color: #fff; }
.join-card h3 { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.035em; }
.join-card .btn-primary {
  background: var(--cnu-gold);
  color: var(--cnu-blue-deep);
  border-color: var(--cnu-gold);
  font-weight: 700;
}
.join-card .btn-primary:hover {
  background: #fff;
  color: var(--cnu-blue-deep);
  border-color: #fff;
}

/* ============================== News quick list ========================= */
.news-quick li a .date {
  color: var(--cnu-orange);
  font-weight: 600;
}

/* ============================== Footer brand ============================ */
.site-footer h4 { color: var(--cnu-blue); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }
html[data-theme="dark"] .site-footer h4 { color: #8FC0FF; }

/* ============================== NAV brand logo ========================== */
.site-header .nav-brand { display: inline-flex; align-items: center; line-height: 0; }
.site-header .nav-brand .brand-logo { height: 26px; width: auto; display: block; }
.site-header .nav-brand .brand-logo-dark { display: none; }
html[data-theme="dark"] .site-header .nav-brand .brand-logo-light { display: none; }
html[data-theme="dark"] .site-header .nav-brand .brand-logo-dark { display: block; }

/* ============================== NAV spacing ============================= */
@media (min-width: 901px) {
  .site-header .nav { justify-content: flex-start; gap: var(--space-8, 3rem); }
  .site-header .nav-right { margin-left: auto; }
}

/* ============================== Gallery timeline ======================= */
.tl { max-width: 760px; margin: 0 auto; }
.tl-year {
  font-size: var(--fs-xl, 1.5rem); font-weight: 800; letter-spacing: -0.02em;
  color: var(--c-accent); margin: var(--space-12, 4rem) 0 var(--space-6, 1.5rem);
  padding-bottom: var(--space-2, .5rem); border-bottom: 2px solid var(--c-accent);
}
.tl-year:first-child { margin-top: 0; }
.tl-entry { padding: var(--space-8, 2.5rem) 0; border-bottom: 1px solid var(--c-border); }
.tl-entry:last-child { border-bottom: 0; }
.tl-date {
  font-family: var(--font-mono, ui-monospace, monospace); font-size: .8rem; letter-spacing: .08em;
  color: var(--c-text-muted); margin-bottom: var(--space-2, .5rem);
}
.tl-title { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 var(--space-3, .75rem); }
.tl-body { white-space: pre-line; line-height: 1.85; color: var(--c-text); margin: 0 0 var(--space-5, 1.25rem); }
.tl-photos { display: grid; gap: var(--space-3, .75rem); grid-template-columns: 1fr; }
.tl-photos-2, .tl-photos-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tl-photo { margin: 0; }
.tl-photo img {
  display: block; width: 100%; height: auto; border-radius: 12px;
  border: 1px solid var(--c-border); background: var(--c-surface, #fff);
}
.tl-photo figcaption { font-size: .85rem; color: var(--c-text-muted); margin-top: var(--space-2, .5rem); }
@media (max-width: 600px) { .tl-photos-2, .tl-photos-3 { grid-template-columns: 1fr; } }

.chart-updated { text-align: right; font-family: var(--font-mono, ui-monospace, monospace); font-size: .75rem; letter-spacing: .04em; color: var(--c-text-muted); margin-top: var(--space-2, .5rem); }

/* ============================== Hero: single-line title ================= */
.hero.hero-cnu .hero-title-ko,
.hero.hero-cnu .hero-title-en { font-size: clamp(2.2rem, 4.6vw, 4.4rem); line-height: 1.15; letter-spacing: -0.04em; }
.hero.hero-cnu .hero-fullname {
  margin: 1.25rem 0 0; font-family: var(--font-sans-kr); color: var(--c-text-light);
  font-size: clamp(1rem, 1.3vw, 1.2rem); line-height: 1.6;
}
.hero.hero-cnu .hero-fullname span { display: block; }
.hero.hero-cnu .hero-fullname .fullname-en { font-weight: 600; color: var(--c-text); letter-spacing: -0.01em; }
@media (max-width: 720px) {
  .hero.hero-cnu .hero-title-ko, .hero.hero-cnu .hero-title-en { font-size: clamp(1.7rem, 7.5vw, 2.4rem); }
}

/* ============================== Scholar stats (citations section) ======== */
.scholar-stats { display: flex; gap: 3rem; margin: 0 0 1.5rem; }
.scholar-stats .n { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 2.2rem; font-weight: 700; color: var(--cnu-blue); letter-spacing: -0.02em; line-height: 1; }
html[data-theme="dark"] .scholar-stats .n { color: #8FC0FF; }
.scholar-stats .lbl { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--c-text-light); margin-top: .4rem; }
@media (min-width: 721px) {
  .hero.hero-cnu .hero-title-ko, .hero.hero-cnu .hero-title-en { white-space: nowrap; max-width: none; }
}

/* ============================== Hero: compact height ==================== */
.hero.hero-cnu { min-height: 0; padding: 6.5rem 6vw 3.5rem; }
.hero-scroll-hint { display: none; }
@media (max-width: 720px) { .hero.hero-cnu { padding: 5.5rem 5vw 2.5rem; } }

/* =========================================================================
 * HOME v2 (ABRL-inspired layout)
 * ========================================================================= */
.hero.hero-v2 {
  min-height: min(78vh, 720px); display: flex; align-items: center; position: relative; overflow: hidden;
  padding: 5rem 6vw 4rem; color: #fff;
  background:
    radial-gradient(ellipse at 85% 15%, rgba(143,192,255,.22) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(29,158,117,.18) 0%, transparent 50%),
    linear-gradient(160deg, #061A3A 0%, #0A2A5C 55%, #002D72 100%);
}
.hero-v2-inner { max-width: 1400px; width: 100%; margin: 0 auto; display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 3rem; }
.hero-v2-univ { display: inline-flex; align-items: center; gap: .55rem; font-size: .95rem; font-weight: 600; letter-spacing: .02em; color: rgba(255,255,255,.85); margin-bottom: 1.6rem; }
.hero-v2-univ img { width: 30px; height: 30px; border-radius: 50%; background: #fff; padding: 2px; }
.hero.hero-v2 h1.hero-v2-title { font-family: var(--font-display); font-weight: 800; font-size: clamp(2.4rem, 4.6vw, 4.6rem); line-height: 1.06; letter-spacing: -0.04em; margin: 0; color: #fff; white-space: nowrap; }
@media (max-width: 900px) { .hero.hero-v2 h1.hero-v2-title { white-space: normal; } }
.hero-v2-title .accent { background: linear-gradient(120deg, #8FC0FF 0%, #5DCAA5 60%, #F6B42D 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-v2-sub { margin: 1.5rem 0 0; font-size: clamp(1rem, 1.35vw, 1.25rem); color: rgba(255,255,255,.78); font-weight: 500; }
.hero-v2-scroll { margin-top: 2.5rem; display: inline-flex; flex-direction: column; align-items: center; gap: .5rem; color: rgba(255,255,255,.55); font-family: 'JetBrains Mono', monospace; font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; }
.hero-v2-scroll span { width: 1px; height: 44px; background: linear-gradient(180deg, rgba(255,255,255,.7), transparent); animation: v2scroll 1.8s ease-in-out infinite; }
@keyframes v2scroll { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
.hero-v2-art svg { width: 100%; height: auto; display: block; }
.hero-v2-art .ion { animation: ionflow 9s linear infinite; }
.hero-v2-art .i1 { animation-delay: 0s; } .hero-v2-art .i2 { animation-delay: -3s; } .hero-v2-art .i3 { animation-delay: -6s; }
.hero-v2-art .i4 { animation-delay: -4.5s; animation-duration: 12s; } .hero-v2-art .i5 { animation-delay: -1.5s; animation-duration: 11s; } .hero-v2-art .i6 { animation-delay: -7.5s; animation-duration: 13s; }
@keyframes ionflow { 0% { cx: 20px; opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { cx: 500px; opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .hero-v2-art .ion, .hero-v2-scroll span { animation: none; } }
@media (max-width: 900px) {
  .hero-v2-inner { grid-template-columns: 1fr; }
  .hero-v2-art { max-width: 420px; margin: 0 auto; opacity: .8; }
  .hero.hero-v2 { min-height: 0; padding: 4rem 5vw 3rem; }
}

/* section title helpers */
.section-title.center { text-align: center; }
.section-title.center .eyebrow { justify-content: center; }
.section-title.center h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); }
.section-title.light .eyebrow, .section-title.light h2 { color: #fff; }
.section-title.light .eyebrow { color: #BBD4FF; }

/* research cards */
.home-research { background: var(--c-bg); }
.rcard-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1.25rem; }
.rcard.reveal { transition: transform .35s ease, box-shadow .35s ease, opacity .7s ease; }
.rcard.reveal:not(.visible) { opacity: 0; transform: translateY(24px); }
.rcard.reveal.visible { opacity: 1; transform: none; }
.rcard { display: flex; flex-direction: column; align-items: center; text-align: center; gap: .9rem; padding: 2.2rem 1.25rem 2rem; background: var(--c-surface, #fff); border: 1px solid var(--c-border); border-radius: 16px; box-shadow: 0 6px 24px rgba(0,45,114,.06); transition: transform .35s ease, box-shadow .35s ease, opacity .6s ease; }
.rcard:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,45,114,.14); }
.rcard-icon { width: 100%; max-width: 220px; color: var(--cnu-blue); }
.rcard-icon svg { width: 100%; height: auto; display: block; }
.rcard-tag { font-family: 'JetBrains Mono', monospace; font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: #fff; background: var(--cnu-blue); padding: .3rem .7rem; border-radius: 999px; }
.rcard h3 { font-size: 1.1rem; font-weight: 800; letter-spacing: -0.02em; margin: 0; color: var(--c-text); word-break: keep-all; }
html[data-theme="dark"] .rcard { background: #0F2140; box-shadow: none; }
html[data-theme="dark"] .rcard-icon { color: #8FC0FF; }
@media (max-width: 900px) { .rcard-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 480px) { .rcard-grid { grid-template-columns: 1fr; } }

/* news + gallery */
.home-news-gal { background: var(--c-surface-2, #F1F4F9); }
.news-gal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: stretch; }
.news-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .9rem; }
.news-list li a { display: grid; grid-template-columns: 64px 1fr auto; gap: 1rem; align-items: center; padding: 1rem 1.1rem; background: var(--c-surface, #fff); border: 1px solid var(--c-border); border-radius: 12px; transition: transform .25s, box-shadow .25s; }
.news-list li a:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,45,114,.10); }
.news-date { text-align: center; line-height: 1; }
.news-date b { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--cnu-blue); letter-spacing: -0.03em; }
.news-date span { display: block; margin-top: .35rem; font-family: 'JetBrains Mono', monospace; font-size: .65rem; letter-spacing: .1em; color: var(--c-text-muted); }
.news-text h4 { margin: 0 0 .25rem; font-size: 1rem; font-weight: 700; color: var(--c-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-text p { margin: 0; font-size: .82rem; color: var(--c-text-muted); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.news-thumb img { width: 96px; height: 68px; object-fit: cover; border-radius: 8px; display: block; }
.gal-slider { position: relative; min-height: 320px; border-radius: 14px; overflow: hidden; background: linear-gradient(135deg, var(--cnu-blue) 0%, var(--cnu-blue-deep) 100%); }
.gal-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .8s ease; display: block; }
.gal-slide.active { opacity: 1; }
.gal-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gal-badge { position: absolute; top: 1rem; left: 1rem; font-family: 'JetBrains Mono', monospace; font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: #fff; background: var(--cnu-blue); padding: .3rem .7rem; border-radius: 999px; }
.gal-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 2.5rem 1.4rem 1.2rem; background: linear-gradient(180deg, transparent, rgba(0,20,50,.85)); color: #fff; }
.gal-cap b { display: block; font-size: 1.1rem; font-weight: 700; }
.gal-cap span { font-family: 'JetBrains Mono', monospace; font-size: .7rem; opacity: .75; }
.gal-slide.gal-empty { opacity: 1; display: grid; place-items: center; }
.gal-empty .gal-cap { position: static; background: none; padding: 0; text-align: center; }
.gal-empty .gal-cap b { font-size: 1.15rem; opacity: .9; }
.gal-dots { position: absolute; right: 1rem; bottom: 1rem; display: flex; gap: .4rem; }
.gal-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.45); cursor: pointer; transition: width .25s, background .25s; }
.gal-dots i.on { width: 20px; border-radius: 4px; background: #fff; }
html[data-theme="dark"] .home-news-gal { background: #08172E; }
html[data-theme="dark"] .news-list li a { background: #0F2140; }
@media (max-width: 900px) { .news-gal-grid { grid-template-columns: 1fr; } }

/* publications slider */
.home-pubs { position: relative; color: #fff; background:
  radial-gradient(ellipse at 20% 30%, rgba(143,192,255,.25) 0%, transparent 45%),
  linear-gradient(120deg, #0A2A5C 0%, #1E5AA8 60%, #0A2A5C 100%); }
.pub-slider-wrap { position: relative; }
.pub-slider { display: flex; gap: 1.5rem; overflow-x: auto; scroll-snap-type: x mandatory; padding: .5rem .25rem 1.25rem; scrollbar-width: none; }
.pub-slider::-webkit-scrollbar { display: none; }
.pub-card { flex: 0 0 min(340px, 82vw); scroll-snap-align: start; background: #fff; color: var(--c-text, #1d1d1f); border-radius: 14px; padding: 1.5rem 1.5rem 1.4rem; display: flex; flex-direction: column; gap: .55rem; box-shadow: 0 12px 32px rgba(0,20,60,.25); transition: transform .3s; }
.pub-card:hover { transform: translateY(-5px); }
.pub-year { font-family: var(--font-display); font-weight: 800; font-size: 1.35rem; color: var(--cnu-blue); letter-spacing: -0.02em; }
.pub-card h3 { margin: 0; font-size: 1rem; font-weight: 700; line-height: 1.4; color: #111; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.pub-card p { margin: 0; font-size: .8rem; color: #555; line-height: 1.5; }
.pub-card .pub-authors { color: #777; }
.pub-nav { position: absolute; top: 40%; z-index: 2; width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255,255,255,.6); background: rgba(255,255,255,.12); color: #fff; font-size: 1.1rem; cursor: pointer; display: grid; place-items: center; backdrop-filter: blur(4px); transition: background .2s; }
.pub-nav:hover { background: rgba(255,255,255,.28); }
.pub-nav.prev { left: -56px; } .pub-nav.next { right: -56px; }
@media (max-width: 1200px) { .pub-nav.prev { left: -8px; } .pub-nav.next { right: -8px; } }
.btn-light { background: #fff; color: var(--cnu-blue); border-radius: 999px; padding: .7rem 1.4rem; font-weight: 700; }
.btn-light:hover { background: #E7EEF7; }
.mt-8 { margin-top: 2rem; }

/* citations */
.scholar-stats.center { justify-content: center; text-align: center; margin-bottom: 2rem; }

/* footer v2 */
.site-footer.footer-v2 { margin-top: 0; border-top: 0; background: #0A1F45; color: rgba(255,255,255,.75); padding: 3.5rem 0 2rem; }
.footer-v2-grid { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 2rem; align-items: start; margin-bottom: 2.5rem; }
.site-footer.footer-v2 h4 { color: #fff !important; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 .7rem; }
.site-footer.footer-v2 p { margin: 0 0 .3rem; font-size: .88rem; color: rgba(255,255,255,.75); }
.site-footer.footer-v2 a { color: rgba(255,255,255,.85); border-bottom: 0; }
.site-footer.footer-v2 a:hover { color: #fff; }
.footer-v2-brand { display: flex; align-items: center; gap: .8rem; color: #fff; font-weight: 700; font-size: 1.05rem; line-height: 1.2; }
.footer-v2-brand img { width: 44px; height: 44px; border-radius: 50%; background: #fff; padding: 3px; }
.footer-v2-brand small { font-weight: 400; font-size: .72rem; opacity: .7; letter-spacing: .04em; }
.site-footer.footer-v2 .footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 1.2rem; font-size: .78rem; color: rgba(255,255,255,.5); }
@media (max-width: 720px) { .footer-v2-grid { grid-template-columns: 1fr; } }

/* hero v2: NESM initials emphasis */
.hero.hero-v2 h1.hero-v2-title .cap {
  background: linear-gradient(120deg, #8FC0FF 0%, #5DCAA5 60%, #F6B42D 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  font-weight: 900; font-size: 1.12em;
}

/* ============================== PI profile (Team > Professor tab) ======= */
.pi-profile { max-width: none; margin: 0; }
.pi-profile-head { display: grid; grid-template-columns: 200px 1fr; gap: 2.2rem; align-items: start; margin-bottom: 2.5rem; }
.pi-profile-photo { width: 200px; height: 240px; object-fit: cover; border-radius: 14px; border: 1px solid var(--c-border); }
.pi-profile-name { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; margin: .2rem 0 .4rem; }
.pi-profile-pos { margin: 0 0 1.1rem; color: var(--c-text-light); line-height: 1.55; }
.pi-profile-contact { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .35rem; font-size: .93rem; }
.pi-profile-contact li span { display: inline-block; min-width: 68px; font-family: 'JetBrains Mono', monospace; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--c-text-muted); }
.pi-section { font-size: 1.05rem; font-weight: 800; letter-spacing: -0.01em; color: var(--cnu-blue); margin: 2rem 0 .8rem; padding-bottom: .45rem; border-bottom: 2px solid var(--cnu-blue); }
html[data-theme="dark"] .pi-section { color: #8FC0FF; border-color: #8FC0FF; }
.pi-list { list-style: none; margin: 0; padding: 0; }
.pi-list li { display: grid; grid-template-columns: 190px 1fr; gap: 1rem; padding: .55rem 0; border-bottom: 1px solid var(--c-border); font-size: .95rem; line-height: 1.55; }
.pi-list li:last-child { border-bottom: 0; }
.pi-list .pi-period { font-family: 'JetBrains Mono', monospace; font-size: .8rem; color: var(--c-text-muted); padding-top: .15rem; }
.pi-list em { color: var(--c-text-muted); font-style: normal; }
@media (max-width: 640px) { .pi-profile-head, .pi-list li { grid-template-columns: 1fr; } .pi-profile-photo { width: 160px; height: 192px; } }

/* member cards: readable text, no mono */
.member-card .name-ko { font-size: 1.25rem; font-weight: 800; }
.member-card .name-en { font-family: var(--font-sans-kr); font-size: .95rem; color: var(--c-text-light); letter-spacing: 0; }
.member-card .role-line { font-family: var(--font-sans-kr); font-size: .98rem; color: var(--c-text); letter-spacing: 0; }
.member-card .role-line .joined { font-family: var(--font-sans-kr); font-size: .98rem; }
.member-card .email-row { font-family: var(--font-sans-kr); font-size: .95rem; letter-spacing: 0; }

/* scholar stats inside the chart card (top-left) */
.citations-chart-wrap { position: relative; }
.scholar-stats.overlay { position: absolute; top: 2rem; left: 4.5rem; z-index: 2; gap: 1.8rem; margin: 0; }
.scholar-stats.overlay .n { font-size: 1.5rem; }
.scholar-stats.overlay .lbl { font-size: .68rem; margin-top: .25rem; }
@media (max-width: 720px) { .scholar-stats.overlay { position: static; margin: 0 0 1rem; gap: 1.5rem; } }
.citations-chart-wrap .citations-chart { padding-top: 5.5rem; }
.scholar-stats.overlay { top: 1.6rem; left: 2.5rem; }
@media (max-width: 720px) { .citations-chart-wrap .citations-chart { padding-top: var(--space-8); } }

/* highly cited badge */
.badge-hc { display: inline-block; margin-left: .55rem; vertical-align: middle; font-family: var(--font-sans-kr); font-size: .7rem; font-weight: 700; letter-spacing: .02em; color: #8A4B00; background: #FFF1D6; border: 1px solid #F6B42D; border-radius: 999px; padding: .15rem .55rem; white-space: nowrap; }
html[data-theme="dark"] .badge-hc { color: #F6B42D; background: rgba(246,180,45,.12); }
.hero.hero-v2 .hero-v2-sub { font-size: clamp(1.25rem, 1.8vw, 1.7rem); font-weight: 600; color: rgba(255,255,255,.88); margin-top: 1.8rem; }

/* member grid: 4 per row, compact cards */
.member-grid { grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1.1rem; }
.member-card { padding: 1rem; }
.member-card .photo { aspect-ratio: 1 / 1; height: auto; }
.member-card .name-ko { font-size: 1.1rem; }
.member-card .name-en, .member-card .role-line, .member-card .role-line .joined, .member-card .email-row { font-size: .88rem; }
@media (max-width: 1024px) { .member-grid { grid-template-columns: repeat(3, minmax(0,1fr)); } }
@media (max-width: 720px) { .member-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 420px) { .member-grid { grid-template-columns: 1fr; } }
/* member photos: portrait frame, keep top of head */
.member-card .photo { aspect-ratio: 3 / 4; }
.member-card img.photo { object-fit: cover; object-position: center top; }