/* AIM Lab static website draft — shared styles */
:root {
  /* Neutral Harmony Bliss */
  --cream: #EFDAC6;
  --coral: #e07a5f;
  --slate: #000000;
  --sage: #000000;
  --sand: #f2cc8f;

  --teal: #000000;
  --teal-deep: #000000;
  --cyan-light: var(--cream);
  --sky-pale: var(--sand);
  --ink: var(--slate);
  --muted: #000000;
  --line: #d8d4bd;
  --white: #fffdf7;
  --page: var(--cream);
  --focus: #000000;
  --page-gutter: clamp(1.5rem, 4vw, 5.5rem);
  --section-space: clamp(4.5rem, 6vw, 6rem);
  --shell: min(1360px, calc(100% - 2 * var(--page-gutter)));
  --radius: 0;
  --shadow: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--page);
  font-family: Inter, Pretendard, "Noto Sans KR", "Segoe UI", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; }
a { color: var(--teal-deep); text-underline-offset: 0.18em; }
a:hover { color: var(--teal); }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 100; padding: .6rem .9rem; color: #000000; background: var(--white); }
.skip-link:focus { top: 1rem; }

.site-header { position: sticky; top: 0; z-index: 50; width: 100%; background: rgba(255,255,255,.98); border-bottom: 1px solid var(--line); }
.nav-shell { width: var(--shell); min-height: 88px; margin: 0 auto; padding: 0; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--ink); min-width: 0; }
.brand:hover { color: var(--ink); }
.brand-logo { display: block; flex: 0 0 auto; width: auto; height: 72px; max-height: none; }
.brand img:not(.brand-logo) { display: block; max-height: 42px; width: auto; }
.site-nav ul { display: flex; align-items: center; gap: .25rem; padding: 0; margin: 0; list-style: none; }
.site-nav a { display: block; padding: .75rem .6rem; border-bottom: 2px solid transparent; color: var(--ink); font-size: .94rem; font-weight: 650; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--teal-deep); border-color: var(--coral); }
.menu-toggle { display: none; align-items: center; justify-content: center; width: 43px; height: 43px; padding: 0; border: 1px solid var(--line); color: var(--teal-deep); background: var(--white); border-radius: var(--radius); }
.menu-toggle svg { width: 23px; height: 23px; }

.shell { width: var(--shell); margin: 0 auto; padding: 0; }
.section { padding: clamp(4rem, 5.2vw, 5.5rem) 0; }
.section--tint { background: var(--cream); }
.section--pale { background: var(--white); }
.research-metasurface { padding-block: clamp(3.5rem, 4.5vw, 4.75rem); border-top: 1px solid var(--line); }
.research-areas { background: #fdf0e6; }
.eyebrow { margin: 0 0 .8rem; color: var(--teal-deep); font-size: .82rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.section-title { max-width: 760px; margin: 0; font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.18; letter-spacing: -.035em; }
.section-intro { max-width: 760px; margin: 1.1rem 0 0; color: var(--muted); font-size: 1.2rem; line-height: 1.65; }
.metasurface-introduction { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2.5rem, 5vw, 5.5rem); align-items: start; }
.metasurface-figure { margin: 0; }
.metasurface-figure img { display: block; width: 100%; height: auto; }
.metasurface-introduction__copy .section-title { font-size: clamp(2rem, 3.2vw, 2.75rem); }
.metasurface-introduction__copy .section-intro { max-width: none; }
.metasurface-introduction__copy .section-intro { font-size: 1.28rem; }
@media (min-width: 901px) {
  .metasurface-introduction { width: 100%; padding: 0; margin: 0; }
  .metasurface-introduction__copy { padding-top: 0; }
}
.section-title, .home-introduction h2, .home-news h2 { font-family: inherit; font-weight: 750; }
.eyebrow, .home-section__eyebrow { margin: 0 0 .8rem; color: var(--teal-deep); font-size: .82rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.page-hero { padding: 4rem 0 3.5rem; border-bottom: 1px solid var(--line); background: #EFDAC6; }
.page-hero .section-title { max-width: 880px; }
.page-hero--members { display: grid; min-height: clamp(190px, 20vw, 280px); place-items: center; padding: 0; background: #EFDAC6; text-align: center; }
.page-hero--members .shell { width: var(--shell); }
.page-hero--members h1 { margin: 0; color: var(--ink); font-size: clamp(3.5rem, 7.5vw, 6.8rem); font-weight: 800; letter-spacing: -.065em; line-height: .95; }
.page-hero + .section { background: var(--white); }

.button-row { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 46px; padding: .65rem 1.05rem; border: 1px solid #000000; border-radius: var(--radius); color: #000000; background: var(--white); font-size: .96rem; font-weight: 750; line-height: 1.2; text-align: center; text-decoration: none; }
.button > span[aria-hidden="true"], .text-link > span[aria-hidden="true"], .home-hero__button > span[aria-hidden="true"], .home-inline-link > span[aria-hidden="true"] { font-size: 1em; line-height: 1; }
.button:hover { color: #000000; background: var(--white); border-color: #000000; }
.button--secondary { color: var(--sage); background: transparent; border-color: var(--sage); }
.button--secondary:hover { color: #000000; background: var(--white); border-color: #000000; }
.button--small { min-height: 42px; padding: .58rem .86rem; font-size: .9rem; }
.text-link { display: inline-flex; align-items: center; gap: .45rem; color: var(--teal-deep); font-size: .98rem; font-weight: 750; text-decoration: none; }
.text-link:hover { color: var(--teal); text-decoration: underline; }

.home-hero { position: relative; padding: 0; border-bottom: 1px solid var(--line); background: var(--white); overflow: hidden; }
.home-hero .shell { width: 100%; }
.hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; min-height: 520px; }
.hero-copy { max-width: 560px; }
.home-hero h1 { margin: 0; color: var(--teal-deep); font-size: clamp(4rem, 5.5vw, 4.5rem); font-weight: 800; line-height: .96; letter-spacing: -.07em; }
.hero-statement { margin: 1.2rem 0 0; color: var(--ink); font-size: clamp(1.5rem, 2.2vw, 1.85rem); font-weight: 680; line-height: 1.22; letter-spacing: -.035em; }
.hero-summary { max-width: 580px; margin: 1.05rem 0 0; color: var(--muted); font-size: 1.12rem; line-height: 1.65; }
.home-hero .button-row { margin-top: 1.85rem; }
.hero-wavefield { position: absolute; inset: 0; z-index: 0; display: grid; place-items: center; pointer-events: none; }
.hero-wavefield img { width: min(1200px, calc(100% - 4rem)); max-width: none; height: 520px; object-fit: fill; opacity: .58; }

.home-section { border-bottom: 1px solid var(--line); }
.home-text-block { max-width: 820px; }
.home-text-block > p:not(.eyebrow):not(.research-keywords) { max-width: 760px; margin: 1.1rem 0 0; color: var(--muted); font-size: 1.16rem; line-height: 1.65; }
.research-keywords { margin: 1.45rem 0 0; color: var(--teal-deep); font-size: .98rem; font-weight: 700; }
.research-listing { margin: 2.2rem 0 1.5rem; border-top: 1px solid var(--line); }
.research-listing article { display: grid; grid-template-columns: minmax(240px, .82fr) 1.18fr; gap: 2rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.research-listing h3 { margin: 0; font-size: 1.18rem; line-height: 1.4; letter-spacing: -.015em; }
.research-listing p { margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.6; }
.section-heading-row { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; }
.section-heading-row > .text-link { margin-bottom: .35rem; white-space: nowrap; }
.home-publication-list { margin-top: 2.2rem; border-top: 1px solid var(--line); }
.home-publication-item { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 1.35rem; align-items: start; padding: 1.3rem 0; border-bottom: 1px solid var(--line); }
.home-publication-item time { color: var(--teal-deep); font-size: .94rem; font-weight: 800; letter-spacing: .05em; }
.home-publication-item h3 { margin: 0; font-size: 1.14rem; line-height: 1.42; letter-spacing: -.01em; }
.home-publication-item p { margin: .35rem 0 0; color: var(--muted); font-size: 1rem; line-height: 1.6; }
.home-publication-item > a { padding-top: .05rem; color: var(--teal-deep); font-size: .94rem; font-weight: 750; text-decoration: none; }
.home-publication-item > a:hover { text-decoration: underline; }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .85fr); gap: clamp(2.5rem, 8vw, 8rem); align-items: center; }
.body-copy p { margin: 0 0 1.1rem; color: var(--muted); font-size: 1.1rem; line-height: 1.7; }
.body-copy p:last-child { margin-bottom: 0; }
.visual-placeholder { min-height: 335px; border: 1px solid var(--line); background: var(--sky-pale); overflow: hidden; }

.research-highlight-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 3rem; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.highlight-item { min-height: 240px; padding: 2rem 1.75rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.highlight-number { color: var(--teal); font-size: .9rem; font-weight: 850; letter-spacing: .12em; }
.highlight-item h3 { margin: .9rem 0 .7rem; font-size: 1.38rem; line-height: 1.3; letter-spacing: -.02em; }
.highlight-item p { margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.6; }

.publications-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin-top: 3rem; }
.publication-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); background: var(--white); }
.publication-image { display: block; aspect-ratio: 16 / 8.7; background: var(--sky-pale); object-fit: cover; }
.publication-body { display: flex; flex: 1; flex-direction: column; padding: 1.35rem; }
.publication-card h3 { margin: 0; font-size: 1.18rem; line-height: 1.4; letter-spacing: -.015em; }
.publication-authors, .publication-journal { margin: .75rem 0 0; color: var(--muted); font-size: .98rem; line-height: 1.6; }
.publication-journal { margin-top: .35rem; }
.publication-links { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: auto; padding-top: 1.1rem; font-size: .94rem; font-weight: 750; }
.publication-links a { text-decoration: none; }
.no-content { padding: 1.3rem; border: 1px dashed var(--line); color: var(--muted); background: var(--white); font-size: 1.05rem; }

.news-list { margin-top: 2.2rem; border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 135px 1fr; gap: 1.4rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.news-date { color: var(--teal-deep); font-size: .94rem; font-weight: 750; letter-spacing: .035em; }
.news-item h3 { margin: 0; font-size: 1.16rem; line-height: 1.42; font-weight: 650; }
.news-item p { margin: .38rem 0 0; color: var(--muted); font-size: 1.05rem; line-height: 1.6; }
.news-item a { color: inherit; text-decoration: none; }
.news-item a:hover h3 { color: var(--teal-deep); }

.join-band { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; padding: 2.1rem 0; }
.join-band h2 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.25rem); line-height: 1.2; letter-spacing: -.03em; }
.join-band p { max-width: 720px; margin: .8rem 0 0; color: var(--muted); font-size: 1.1rem; line-height: 1.65; }

.research-tools { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(2rem, 5vw, 4.5rem); width: 100%; max-width: 1060px; margin: clamp(2.5rem, 4.5vw, 4rem) auto 0; }
.research-tool { min-width: 0; text-align: center; }
.research-tool img { display: block; width: min(100%, 215px); aspect-ratio: 1; margin: 0 auto; object-fit: contain; }
.research-tool h3 { margin: 1rem 0 0; font-size: clamp(1.2rem, 1.7vw, 1.45rem); line-height: 1.28; letter-spacing: -.025em; }
.workflow { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); margin: 3.2rem 0 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.workflow--after-tools { margin-top: clamp(4rem, 7vw, 6rem); }
.workflow-step { position: relative; min-height: 154px; padding: 1.1rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.workflow-step::after { content: "→"; position: absolute; right: -.55rem; top: 50%; z-index: 1; transform: translateY(-50%); width: 1.1rem; color: var(--teal-deep); background: var(--white); text-align: center; font-weight: 800; }
.workflow-step:last-child::after { content: none; }
.workflow-step span { display: block; color: var(--teal); font-size: .82rem; font-weight: 850; letter-spacing: .1em; }
.workflow-step strong { display: block; margin-top: .8rem; font-size: 1rem; line-height: 1.4; }

.research-area { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); gap: clamp(2.5rem, 6vw, 6.5rem); align-items: center; padding: clamp(3rem, 4.5vw, 4.5rem) 0; border-bottom: 1px solid var(--line); }
.research-area:nth-of-type(even) .research-area-visual { order: 2; }
.research-area-visual { min-height: 0; border: 0; background: transparent; overflow: visible; }
.research-area-visual img { display: block; width: 100%; height: auto; object-fit: contain; }
.research-area h2 { margin: 0; font-size: clamp(1.5rem, 2.5vw, 2.15rem); line-height: 1.22; letter-spacing: -.03em; }
.research-area > div > p { max-width: 660px; color: var(--muted); font-size: 1.1rem; line-height: 1.65; }
.research-area > div > p + p { margin-top: .8rem; }
.research-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .45rem 1.2rem; padding: 0; margin: 1.35rem 0 1.4rem; list-style: none; }
.research-list li { position: relative; padding-left: .9rem; color: var(--muted); font-size: 1rem; line-height: 1.55; }
.research-list li::before { content: ""; position: absolute; top: .68em; left: 0; width: .3rem; height: .3rem; background: var(--teal); }
.research-publications-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--teal-deep); font-size: .96rem; font-weight: 750; text-decoration: none; }
.research-publications-link:hover { color: var(--teal); text-decoration: underline; text-underline-offset: .18em; }
.tag { display: inline-block; margin: 0 0 .85rem; padding: .38rem .62rem; color: var(--teal-deep); border: 1px solid var(--teal); background: var(--cyan-light); font-size: .78rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }

.member-section { padding: 0; }
.member-section + .member-section { margin-top: clamp(3rem, 5vw, 4.5rem); padding-top: clamp(3rem, 4.5vw, 4rem); border-top: 1px solid var(--line); }
.member-section h2 { margin: 0; font-size: clamp(1.5rem, 2.5vw, 2.1rem); letter-spacing: -.03em; }
.member-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 220px)); gap: 2rem 1.5rem; margin-top: 1.5rem; }
.member-card { width: auto; overflow: hidden; border: 0; background: transparent; }
.member-card--pi { display: grid; grid-template-columns: minmax(300px, 340px) minmax(0, 1fr); width: min(100%, 1080px); min-height: 0; column-gap: clamp(1.75rem, 4vw, 3.25rem); }
.member-photo { display: block; width: 100%; height: auto; margin: 0; aspect-ratio: 4 / 5; object-fit: cover; object-position: center; background: var(--sky-pale); }
.member-card--pi .member-photo { width: 100%; height: auto; min-height: 0; margin: 0; aspect-ratio: 4 / 5; }
.member-body { padding: .85rem 0 0; }
.member-card--pi .member-body { padding: 0; }
.member-body h3 { margin: 0; font-size: 1.05rem; line-height: 1.3; letter-spacing: -.025em; }
.member-card--pi .member-body h3 { font-size: clamp(1.7rem, 2.25vw, 2.15rem); line-height: 1.12; letter-spacing: -.04em; }
.member-role { margin: .3rem 0 0; color: var(--teal-deep); font-size: .9rem; font-weight: 800; line-height: 1.4; }
.member-affiliation, .member-topic { margin: .55rem 0 0; color: var(--muted); font-size: .96rem; line-height: 1.5; }
.member-details { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.8rem; margin: 1.2rem 0; }
.member-details h4 { margin: 0 0 .55rem; font-size: .86rem; letter-spacing: .08em; text-transform: uppercase; }
.member-details p { margin: 0; color: var(--muted); font-size: .98rem; line-height: 1.55; }
.member-experience { margin-top: 1.25rem; }
.member-experience ul { display: grid; gap: .55rem; padding: 0; margin: 0; list-style: none; }
.member-experience li { display: block; color: var(--muted); font-size: .95rem; line-height: 1.5; }
.member-experience strong { color: var(--ink); font-weight: 750; }
.member-experience__department { color: var(--ink); }
.member-experience__institution::before { content: "·"; margin: 0 .3rem; color: var(--teal); }
.member-experience time { margin-left: .3rem; color: var(--teal-deep); font-size: 1em; font-weight: 750; white-space: nowrap; }
.member-experience time::before { content: "·"; margin-right: .3rem; color: var(--teal); }
.member-links { display: flex; flex-wrap: wrap; gap: .6rem 1rem; padding: 0; margin: .9rem 0 0; list-style: none; font-size: .94rem; font-weight: 800; }
.member-links a { text-decoration: none; }
.member-contact-links { display: grid; gap: .35rem; margin-top: 1.65rem; font-size: 1rem; line-height: 1.5; }
.member-contact-links li { width: fit-content; }
.member-contact-links a { color: var(--teal-deep); }
.member-contact-links strong { color: var(--ink); }

.filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin: 2.2rem 0 2.8rem; }
.filter-button { padding: .58rem .9rem; border: 1px solid var(--line); border-radius: 0; color: var(--ink); background: var(--white); font-size: .94rem; font-weight: 800; }
.filter-button:hover, .filter-button[aria-pressed="true"] { border-color: #000000; color: #000000; background: var(--white); }
.publication-year { margin-top: 3.5rem; }
.publication-year h2 { padding-bottom: .75rem; margin: 0 0 1.2rem; border-bottom: 2px solid var(--teal); font-size: 1.75rem; }
.publication-list { padding: 0; margin: 0; list-style: none; }
.publication-list > li { padding: 1.45rem 0; border-bottom: 1px solid var(--line); }
.publication-list h3 { margin: 0; font-size: 1.22rem; line-height: 1.45; }
.publication-list p { margin: .38rem 0 0; color: var(--muted); font-size: 1.02rem; line-height: 1.6; }
.publication-list strong { color: var(--ink); }
.inline-links { display: flex; flex-wrap: wrap; gap: .55rem 1rem; margin-top: .65rem; font-size: .94rem; font-weight: 800; }
.inline-links a { text-decoration: none; }

/* Publications — continuous academic CV list, intentionally not card-based. */
.publication-cv { padding-top: clamp(3rem, 4.5vw, 4rem); background: var(--white); }
.publication-cv__shell { width: min(1080px, calc(100% - 2 * var(--page-gutter))); margin: 0 auto; }
.publication-cv__section + .publication-cv__section { margin-top: clamp(3rem, 4.5vw, 4rem); }
.publication-cv__section h2 { margin: 0 0 1.55rem; padding-bottom: .8rem; border-bottom: 2px solid var(--teal); color: var(--teal-deep); font-size: clamp(1.65rem, 2.6vw, 2.15rem); font-weight: 780; line-height: 1.2; letter-spacing: -.035em; }
.publication-cv__list { padding: 0; margin: 0; list-style: none; counter-reset: publication; }
.publication-cv__entry { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: .25rem; padding: .68rem 0; color: var(--ink); font-size: clamp(1.06rem, 1.2vw, 1.15rem); line-height: 1.65; }
.publication-cv__number { color: var(--teal-deep); font-weight: 800; }
.publication-cv__citation { min-width: 0; }
.publication-cv__citation strong { color: var(--ink); font-weight: 800; }
.publication-cv__citation em { color: var(--ink); font-style: italic; font-weight: 700; }
.publication-cv__title { color: inherit; }
a.publication-cv__title { text-decoration-line: underline; text-decoration-color: var(--teal); text-decoration-thickness: 1px; text-underline-offset: .16em; }
a.publication-cv__title:hover { color: var(--teal-deep); text-decoration-thickness: 2px; }
.publication-cv__doi { color: var(--teal-deep); font-weight: 700; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .15em; }
.publication-cv__note { grid-column: 2; margin: .25rem 0 0; padding-left: .85rem; color: var(--muted); font-size: .96em; font-style: italic; }
.publication-cv__notes { margin-top: 2.3rem; color: var(--muted); font-size: .96rem; line-height: 1.6; }
.publication-cv__notes p { margin: 0; }

.contact-recruitment { max-width: 760px; }
.contact-recruitment__email { margin: 1.1rem 0 0; color: var(--muted); font-size: 1.2rem; line-height: 1.65; }
.contact-recruitment__email a { color: var(--teal-deep); font-weight: 750; }
.contact-general { max-width: 760px; margin-top: clamp(3rem, 4.5vw, 4rem); padding-top: clamp(3rem, 4vw, 3.5rem); border-top: 1px solid var(--line); }
.contact-details { padding: 0; margin: 2rem 0 0; border-top: 1px solid var(--line); }
.contact-details > div { display: grid; grid-template-columns: minmax(150px, .34fr) 1fr; gap: 1.5rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.contact-details dt { color: var(--teal-deep); font-size: .86rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.contact-details dd { margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }
.contact-details a { color: var(--teal-deep); font-weight: 750; }

.site-footer { padding: 2.15rem 0; color: var(--muted); background: var(--cream); border-top: 1px solid var(--line); }
.footer-simple { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; }
.footer-title { margin: 0; color: var(--ink); font-size: 1.1rem; font-weight: 800; }
.site-footer p { margin: .3rem 0 0; color: var(--muted); font-size: .92rem; }
.footer-links-inline { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .8rem 1.1rem; color: var(--muted); font-size: .92rem; }
.footer-links-inline a { color: var(--teal-deep); text-decoration: none; }
.footer-links-inline a:hover { text-decoration: underline; }

[data-reveal] { opacity: 1; transform: none; }

@media (max-width: 900px) {
  :root { --page-gutter: 1.5rem; }
  .menu-toggle { display: inline-flex; }
  .nav-shell { width: var(--shell); padding: 0; }
  .site-nav { position: absolute; top: calc(100% + 1px); left: 0; right: 0; display: none; padding: .65rem 1.2rem 1rem; border-bottom: 1px solid var(--line); background: var(--white); }
  .site-nav.is-open { display: block; }
  .site-nav ul { display: grid; gap: 0; }
  .site-nav a { padding: .82rem 0; font-size: 1rem; }
  .split, .research-area, .metasurface-introduction { grid-template-columns: 1fr; }
  .home-hero { min-height: auto; }
  .home-hero .shell { width: 100%; }
  .hero-layout { grid-template-columns: 1fr; min-height: 0; padding: 4.5rem 0; }
  .hero-wavefield { justify-content: end; }
  .hero-wavefield img { width: 820px; height: 100%; max-width: none; margin-left: 34%; object-fit: cover; }
  .research-highlight-grid, .publications-grid { grid-template-columns: 1fr; }
  .research-tools { gap: clamp(1.75rem, 5vw, 3.5rem); }
  .research-tool img { width: min(100%, 235px); }
  .highlight-item { min-height: 0; }
  .workflow { grid-template-columns: repeat(2, 1fr); }
  .workflow-step::after { content: none; }
  .workflow-step { min-height: 126px; }
  .research-area:nth-of-type(even) .research-area-visual { order: initial; }
  .research-area { padding: 3rem 0; }
  .member-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 220px)); gap: 2rem 1.5rem; }
  .member-card { width: auto; }
  .member-card--pi { grid-template-columns: minmax(260px, 320px) minmax(0, 1fr); width: min(100%, 960px); min-height: 0; }
  .member-card--pi .member-photo { width: 100%; height: auto; margin: 0; }
  .member-card--pi .member-body { padding: 0; }
  .footer-simple { align-items: start; flex-direction: column; }
  .footer-links-inline { justify-content: flex-start; }
}

@media (max-width: 600px) {
  :root { --page-gutter: 1rem; --section-space: 4.4rem; }
  .nav-shell { width: var(--shell); min-height: 82px; padding: 0; }
  .section { padding: 4.4rem 0; }
  .page-hero { padding: 3.4rem 0 3rem; }
  .page-hero--members { min-height: 210px; padding: 0; }
  .page-hero--members h1 { font-size: clamp(3.15rem, 16vw, 4.5rem); }
  .home-hero { padding: 0; }
  .home-hero .shell { width: 100%; }
  .hero-layout { padding: 3.9rem 0; }
  .home-hero h1 { font-size: clamp(3rem, 15vw, 4.1rem); }
  .hero-statement { margin-top: 1rem; font-size: clamp(1.28rem, 6.8vw, 1.65rem); }
  .hero-summary { font-size: 1.04rem; }
  .home-hero .button { min-height: 43px; }
  .research-listing article { grid-template-columns: 1fr; gap: .35rem; padding: 1.05rem 0; }
  .section-heading-row { display: block; }
  .section-heading-row > .text-link { display: inline-flex; margin-top: 1.1rem; }
  .home-publication-item { grid-template-columns: 48px minmax(0, 1fr); gap: .9rem; }
  .home-publication-item > a { grid-column: 2; }
  .visual-placeholder { min-height: 260px; }
  .news-item { grid-template-columns: 1fr; gap: .35rem; }
  .join-band { grid-template-columns: 1fr; }
  .join-band .button { justify-self: start; }
  .workflow { grid-template-columns: 1fr; }
  .research-tools { grid-template-columns: 1fr; gap: 3.25rem; max-width: 260px; margin-top: 3rem; }
  .research-tool img { width: min(100%, 205px); }
  .research-tool h3 { margin-top: 1.15rem; }
  .workflow--after-tools { margin-top: 4.25rem; }
  .research-list { grid-template-columns: 1fr; }
  .member-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 1rem; }
  .member-card { width: auto; }
  .member-photo { width: 100%; height: auto; aspect-ratio: 4 / 5; }
  .member-card--pi { grid-template-columns: 1fr; width: min(100%, 400px); min-height: 0; }
  .member-card--pi .member-photo { width: 100%; height: auto; min-height: 0; margin: 0; aspect-ratio: 4 / 5; }
  .member-card--pi .member-body { padding: 1rem 0 0; }
  .member-details { grid-template-columns: 1fr; }
  .publication-cv__shell { width: 100%; padding: 0 var(--page-gutter); }
  .publication-cv__entry { grid-template-columns: 1.85rem minmax(0, 1fr); gap: .1rem; padding: .6rem 0; }
  .publication-cv__section h2 { margin-bottom: 1.25rem; }
  .contact-details > div { grid-template-columns: 1fr; gap: .2rem; }
  .footer-simple { gap: 1rem; }
  .footer-links-inline { gap: .55rem 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Home — aligned to the shared white, charcoal, and teal site system. */
.home-redesign {
  --home-forest: var(--ink);
  --home-sage: var(--muted);
  --home-charcoal: var(--ink);
  --home-green: var(--teal);
  --home-green-dark: var(--teal-deep);
  --home-ink: var(--ink);
  --home-muted: var(--muted);
  --home-line: var(--line);
  color: var(--home-ink);
  background: var(--cream);
  font-family: Inter, Pretendard, "Noto Sans KR", "Segoe UI", Arial, sans-serif;
}
.home-redesign *, .home-redesign *::before, .home-redesign *::after { box-sizing: border-box; }
.home-skip-link { position: fixed; top: -4rem; left: 1rem; z-index: 100; padding: .65rem .9rem; color: #000000; background: var(--white); text-decoration: none; }
.home-skip-link:focus { top: 1rem; }
.home-header { position: sticky; top: 0; z-index: 20; width: 100%; background: var(--white); border-bottom: 1px solid var(--home-line); }
.home-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; width: var(--shell); min-height: 88px; margin: 0 auto; padding: 0; }
.home-header .brand { color: var(--ink); }
.home-header .brand:hover { color: var(--ink); }
.home-header .brand-logo { height: 72px; }
.home-nav { display: flex; align-items: center; gap: .25rem; }
.home-nav a { display: block; padding: .75rem .6rem; border-bottom: 2px solid transparent; color: var(--ink); font-size: .94rem; font-weight: 650; text-decoration: none; }
.home-nav a:hover, .home-nav a[aria-current="page"] { color: var(--teal-deep); border-color: var(--coral); }
.home-mobile-nav { display: none; }

.home-redesign .home-hero { display: grid; min-height: 0; margin: 0; overflow: hidden; border-top: 0; border-bottom: 1px solid var(--line); background: var(--cream); }
.home-hero__inner { position: relative; width: 100%; min-height: clamp(480px, 47vw, 650px); margin: 0 auto; }
.home-hero__visual { position: absolute; inset: 0; width: 100%; max-width: none; margin: 0; }
.home-hero__visual picture, .home-hero__visual img { display: block; width: 100%; height: 100%; }
.home-hero__visual img { object-fit: cover; object-position: center; }
@media (min-width: 1200px) {
  .home-hero__inner, .home-hero__text { min-height: clamp(400px, 33.3vw, 650px); }
  .home-hero__visual img { object-position: center; }
}
.home-hero__text { position: relative; z-index: 1; display: flex; flex-direction: column; justify-content: center; width: min(39%, 490px); min-height: clamp(480px, 47vw, 650px); margin-left: clamp(2rem, 7vw, 8rem); padding: 3rem 0; transform: translateY(-1rem); }
.home-hero h1, .hero-title { margin: 0; color: #000000; font-size: clamp(4rem, 5.5vw, 4.5rem); font-weight: 800; line-height: .96; letter-spacing: -.07em; }
.home-hero__subtitle, .hero-subtitle { max-width: 510px; margin: 1.2rem 0 0; color: rgba(0, 0, 0, .68); font-size: clamp(1.5rem, 2.2vw, 1.85rem); font-weight: 650; line-height: 1.22; letter-spacing: -.035em; }
.home-hero__rule { display: none; }
.home-hero__actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.8rem; }
.home-hero__button { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-width: 0; min-height: 44px; padding: .6rem 1rem; border: 1px solid #000000; border-radius: var(--radius); color: #000000; background: var(--white); font-size: .94rem; font-weight: 750; line-height: 1.2; letter-spacing: 0; text-decoration: none; transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease; }
.home-hero__button span { font-size: 1em; line-height: 1; }
.home-hero__button--primary { color: #ffffff; border-color: #000000; background: #000000; }
.home-hero__button--primary:hover { color: #ffffff; background: #000000; border-color: #000000; }
.home-hero__button--secondary { border-color: rgba(0, 0, 0, .45); background: transparent; font-weight: 650; }
.home-hero__button--secondary:hover { color: #000000; border-color: #000000; background: rgba(255, 255, 255, .45); }
.home-content-shell { width: var(--shell); margin: 0 auto; padding: 0; }
.home-introduction { background: var(--white); }
.home-news { background: var(--cream); }
.home-introduction { padding: calc(var(--section-space) - .25rem) 0 var(--section-space); border-bottom: 1px solid var(--home-line); }
.home-introduction__layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr); gap: clamp(3rem, 8vw, 9rem); align-items: center; }
.home-section__eyebrow { color: var(--teal-deep); }
.home-introduction h2, .home-news h2 { margin: 0; color: var(--ink); font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 750; line-height: 1.18; letter-spacing: -.035em; }
.home-introduction__copy { max-width: 720px; margin-top: 1rem; }
.home-introduction__copy p { margin: 0; color: var(--muted); font-size: 1.16rem; line-height: 1.68; }
.home-introduction__copy p + p { margin-top: 1rem; }
.home-research-flow { display: flex; align-items: center; justify-content: center; gap: clamp(.8rem, 2vw, 1.75rem); min-width: 0; }
.home-research-flow__inputs { display: flex; align-items: center; gap: clamp(.45rem, 1.1vw, .9rem); min-width: 0; }
.home-research-flow__item { display: grid; justify-items: center; gap: .65rem; min-width: 0; color: var(--ink); font-size: .82rem; font-weight: 750; line-height: 1.3; letter-spacing: -.01em; text-align: center; }
.home-research-flow__item img { display: block; width: clamp(62px, 7.5vw, 104px); aspect-ratio: 1; object-fit: contain; }
.home-research-flow__item span { max-width: 7.5rem; }
.home-research-flow__symbol, .home-research-flow__arrow { flex: 0 0 auto; color: var(--teal-deep); font-size: clamp(1.2rem, 2vw, 1.65rem); font-weight: 450; line-height: 1; }
.home-research-flow__arrow { font-size: clamp(1.35rem, 2.4vw, 1.9rem); }
.home-inline-link { display: inline-flex; align-items: center; gap: .45rem; margin-top: 2rem; color: var(--teal-deep); font-size: .98rem; font-weight: 750; text-decoration: none; }
.home-inline-link:hover { color: var(--teal); text-decoration: underline; text-underline-offset: .18em; }
.home-inline-link span { font-size: 1em; line-height: 1; }
.home-news { padding: var(--section-space) 0; }
.home-news__heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; }
.home-news__heading .home-inline-link { margin: 0 0 .35rem; white-space: nowrap; }
.home-news__list { margin-top: 2.2rem; border-top: 1px solid var(--home-line); }
.home-news .news-item { grid-template-columns: 135px minmax(0, 1fr); gap: 1.4rem; padding: 1.15rem 0; border-bottom-color: var(--home-line); }
.home-news .news-date { color: var(--teal-deep); font-size: .94rem; font-weight: 750; letter-spacing: .035em; }
.home-news .news-item h3 { color: var(--ink); font-size: 1.16rem; font-weight: 650; line-height: 1.42; letter-spacing: -.01em; }
.home-news .news-item p { max-width: 720px; margin-top: .38rem; color: var(--muted); font-size: 1.05rem; line-height: 1.6; }
.home-news .news-item a:hover h3 { color: var(--teal-deep); }
.home-news__loading { margin: 1.35rem 0; color: var(--muted); font-size: 1.04rem; }
.home-redesign :focus-visible { outline: 3px solid var(--home-green); outline-offset: 3px; }

@media (max-width: 900px) {
  .home-header__inner { width: var(--shell); min-height: 84px; padding: 0; }
  .home-header .brand-logo { height: 66px; }
  .home-hero__inner, .home-hero__text { min-height: clamp(430px, 53vw, 560px); }
  .home-hero__text { width: min(43%, 440px); margin-left: clamp(1.5rem, 5vw, 3.5rem); transform: translateY(-.8rem); }
  .home-content-shell { width: var(--shell); }
  .home-introduction__layout { grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr); gap: clamp(2rem, 5vw, 4rem); }
  .home-hero h1 { font-size: clamp(3.7rem, 6vw, 4.5rem); }
  .home-hero__subtitle { font-size: clamp(1.35rem, 2.3vw, 1.7rem); }
}
@media (min-width: 701px) and (max-width: 1050px) {
  .home-header__inner { gap: 1rem; min-height: 70px; }
  .home-header .brand-logo { height: 52px; }
  .home-nav { gap: .1rem; }
  .home-nav a { padding: .55rem .36rem; font-size: .82rem; white-space: nowrap; }
}
@media (max-width: 700px) {
  .home-header__inner { width: var(--shell); min-height: 78px; padding: 0; }
  .home-header .brand-logo { height: 58px; }
  .home-nav { display: none; }
  .home-mobile-nav { position: relative; display: block; }
  .home-mobile-nav summary { display: grid; width: 44px; height: 44px; place-content: center; gap: 4px; list-style: none; cursor: pointer; border: 1px solid var(--home-line); }
  .home-mobile-nav summary::-webkit-details-marker { display: none; }
  .home-mobile-nav summary span { display: block; width: 16px; height: 1px; background: var(--teal-deep); }
  .home-mobile-nav nav { position: absolute; top: calc(100% + 8px); right: 0; display: grid; width: min(210px, calc(100vw - 2rem)); padding: .45rem 1rem; border: 1px solid var(--home-line); background: var(--white); box-shadow: 0 8px 18px rgba(61, 64, 91, .12); }
  .home-mobile-nav nav a { padding: .65rem 0; color: var(--ink); font-size: .98rem; font-weight: 650; text-decoration: none; }
  .home-redesign .home-hero { min-height: auto; background: var(--cream); }
  .home-hero__inner { min-height: 264px; }
  .home-hero__visual { position: absolute; inset: 0; width: 100%; aspect-ratio: auto; }
  .home-hero__visual img { object-fit: cover; object-position: 66% center; }
  .home-hero__text { position: relative; z-index: 1; width: min(45%, 176px); min-height: 264px; margin-left: var(--page-gutter); padding: 1.2rem 0; background: transparent; transform: translateY(-.4rem); }
  .home-hero h1 { font-size: clamp(2rem, 10vw, 2.65rem); }
  .home-hero__subtitle { margin-top: .55rem; font-size: clamp(.94rem, 4.3vw, 1.12rem); }
  .home-hero__actions { gap: .4rem; margin-top: 1rem; }
  .home-hero__button { min-height: 34px; padding: .42rem .55rem; font-size: .76rem; }
  .home-content-shell { width: var(--shell); }
  .home-introduction { padding: var(--section-space) 0; }
  .home-introduction__layout { display: block; }
  .home-introduction__copy { margin-top: 1.1rem; }
  .home-introduction__copy p { font-size: 1.08rem; line-height: 1.68; }
  .home-inline-link { margin-top: 1.8rem; }
  .home-research-flow { justify-content: flex-start; gap: .7rem; margin-top: 2.75rem; }
  .home-research-flow__inputs { gap: .45rem; }
  .home-research-flow__item { gap: .5rem; font-size: .69rem; }
  .home-research-flow__item img { width: clamp(48px, 16vw, 76px); }
  .home-research-flow__item span { max-width: 5.5rem; }
  .home-research-flow__symbol, .home-research-flow__arrow { font-size: 1.05rem; }
  .home-research-flow__arrow { font-size: 1.25rem; }
  .home-news { padding: var(--section-space) 0; }
  .home-news__heading { align-items: start; flex-direction: column; gap: 1.25rem; }
  .home-news__heading .home-inline-link { margin: 0; }
  .home-news__list { margin-top: 1.8rem; }
  .home-news .news-item { grid-template-columns: 1fr; gap: .35rem; padding: 1.25rem 0; }
  .home-news .news-item h3 { font-size: 1.28rem; }
}
@media (max-width: 410px) {
  .home-hero__button { min-width: 0; }
}
@media (max-width: 345px) {
  .home-hero__button { width: 100%; justify-content: space-between; }
}