/* ==========================================================================
   NVA Lab — design tokens
   Single source of truth for type, color, and spacing.
   Change a value here and it propagates site-wide.
   ========================================================================== */
:root{
  /* --- Type scale (7 steps, 1rem = 16px base) -------------------------- */
  --fs-xs:.75rem;      /* 12px — captions, tags, badges */
  --fs-sm:.875rem;     /* 14px — meta, secondary text */
  --fs-base:1rem;      /* 16px — body copy */
  --fs-md:1.125rem;    /* 18px — card & sub-section titles */
  --fs-lg:1.375rem;    /* 22px — section titles */
  --fs-xl:1.75rem;     /* 28px — page titles */
  --fs-2xl:2.25rem;    /* 36px — hero */

  /* --- Line heights (3 steps) ------------------------------------------ */
  --lh-tight:1.25;     /* headings */
  --lh-snug:1.5;       /* compact UI text */
  --lh-body:1.7;       /* prose */

  /* --- Weights ---------------------------------------------------------
     Only 400/500/600 are loaded from Google Fonts. Never use 700: the
     browser would fake it (synthetic bold) and the text renders muddy. */
  --fw-regular:400;
  --fw-medium:500;
  --fw-bold:600;

  /* --- Ink (text colors, 4 steps) --------------------------------------
     All AA-compliant (>=4.5:1) on the light page background. */
  --ink-strong:#132a58;  /* emphasis inside body copy */
  --ink:#1c2845;         /* default text, headings */
  --ink-muted:#4a5c78;   /* secondary text, meta */
  --ink-subtle:#5c6d88;  /* tertiary text, captions */

  /* --- Brand accents ---------------------------------------------------- */
  --brand-blue:#5b7fe0;  /* DECORATIVE ONLY — 3.8:1 on light, never for text */
  --brand-red:#b3272a;   /* KIST red — 6.5:1 */
  --brand-gold:#f2a71b;  /* decorative only */
  --brand-teal:#3a8f8f;  /* decorative only */
  --link:#1a4fa8;        /* 7.7:1 on white — all interactive text */
  --link-hover:#b3272a;

  /* --- Surfaces --------------------------------------------------------- */
  --surface:#fff;
  --surface-soft:#dfe8f5;
  --surface-deep:#1c2142;
  --border:#b8c7de;

  /* --- Page background --------------------------------------------------
     Painted on a fixed body::before layer, so the gradient stays anchored to
     the viewport instead of stretching over the full document height. */
  --page-tint:#eef3fb;
  --page-bg:
    radial-gradient(1100px 640px at 6% -8%,rgba(91,127,224,.30),transparent 62%),
    radial-gradient(900px 520px at 94% -4%,rgba(242,167,27,.15),transparent 58%),
    radial-gradient(1200px 760px at 50% 112%,rgba(58,143,143,.12),transparent 64%),
    linear-gradient(180deg,#e4edfa 0%,#f1f6fd 46%,#eaf1fa 100%);

  /* --- Spacing (4px grid) ----------------------------------------------- */
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:96px;

  /* --- Layout -----------------------------------------------------------
     Latin renders in Noto Sans (the face OpenReview uses); Korean has no
     glyphs there and falls through per-character to Pretendard. */
  --font-sans:'Noto Sans','Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',system-ui,sans-serif;
  --gutter:56px;
  --w-wide:1320px;   /* header, footer, home sections */
  --w-main:1120px;   /* standard page body */
  --w-read:960px;    /* reading-width pages */
  --radius:8px;
}

/* ==========================================================================
   Base
   ========================================================================== */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--page-tint);font-family:var(--font-sans);color:var(--ink);font-size:var(--fs-base);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
/* Fixed backdrop layer — avoids the iOS bugs of background-attachment:fixed
   and keeps the gradient stable no matter how long the page is. */
body::before{content:'';position:fixed;inset:0;z-index:-1;background:var(--page-bg);pointer-events:none}
a{color:var(--link);text-decoration:none}
a:hover{color:var(--link-hover)}

/* ==========================================================================
   Header / navigation
   ========================================================================== */
.site-header{background:rgba(255,255,255,.62);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);box-shadow:0 1px 0 rgba(28,40,69,.07),0 6px 18px rgba(28,40,69,.04)}
.site-brand{display:flex;align-items:center;flex:none}
.nav-group{position:relative}
.site-header-bar{display:flex;align-items:center;justify-content:space-between;padding:0 var(--gutter);height:76px;max-width:var(--w-wide);margin:0 auto;width:100%;box-sizing:border-box}
.site-header-rule{max-width:var(--w-wide);margin:0 auto;padding:0 var(--gutter);box-sizing:border-box;width:100%;display:flex;align-items:center;gap:var(--sp-3)}
.site-header-rule-line{flex:1;height:1px;background:linear-gradient(90deg,transparent,rgba(184,199,222,.85))}
.site-header-rule-line:last-child{background:linear-gradient(90deg,rgba(184,199,222,.85),transparent)}
.site-header-rule-marks{display:flex;gap:5px;flex:none}
.site-header-rule-marks span{width:30px;height:3px;border-radius:2px}
.site-header-rule-marks span:nth-child(1){background:var(--brand-blue)}
.site-header-rule-marks span:nth-child(2){background:var(--brand-red)}
.site-header-rule-marks span:nth-child(3){background:var(--brand-gold)}
/* Hamburger: hidden until the nav no longer fits on one line. */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0;border:1px solid var(--border);border-radius:var(--radius);background:rgba(255,255,255,.7);cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;margin:0 auto;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.site-nav{display:flex;gap:26px;align-items:center;font-size:var(--fs-base);font-weight:var(--fw-bold);line-height:var(--lh-tight)}
.site-nav>a,.site-nav>div>a{color:var(--ink-strong);letter-spacing:.04em;padding:10px var(--sp-1);border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease}
.site-nav>a:hover,.site-nav>div>a:hover{color:var(--brand-red);border-bottom-color:rgba(179,39,42,.7)}
.site-nav>a.nav-active,.site-nav>div>a.nav-active{border-bottom-color:var(--brand-blue)}
.nav-drop a{font-weight:var(--fw-medium);font-size:var(--fs-sm);letter-spacing:0;padding:10px 18px;border-bottom:none;text-shadow:none;color:var(--ink)}
.nav-drop a:hover{color:var(--link-hover);background:rgba(91,127,224,.1)}

/* ==========================================================================
   Page scaffolding & headings
   ========================================================================== */
.page-header{padding:var(--sp-5) var(--gutter) var(--sp-6);text-align:center}
.page-title{font-size:var(--fs-xl);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);letter-spacing:-.02em;margin:0}
.section-title{margin:0;font-size:var(--fs-lg);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);letter-spacing:-.01em}
.section-title::after{content:'';display:block;width:40px;height:3px;margin-top:10px;background:linear-gradient(90deg,var(--brand-blue),var(--brand-red),var(--brand-gold));border-radius:2px}
.subsection-title{font-size:var(--fs-md);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);margin:0 0 var(--sp-4)}

.site-main{padding:var(--sp-7) var(--gutter) var(--sp-9);max-width:var(--w-main);margin:0 auto;width:100%;box-sizing:border-box}
/* Modifiers for sections stacked directly under another one. */
.site-main--flush-top{padding-top:0}
.site-main--flush-bottom{padding-bottom:var(--sp-7)}
.site-main--narrow{max-width:var(--w-read)}
.site-main--contact{max-width:var(--w-main);display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8)}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-guide{max-width:var(--w-read);padding-top:0}
.contact-guide-body{display:flex;flex-direction:column;gap:var(--sp-3)}
.contact-guide-body p{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink);margin:0;word-break:keep-all}
.contact-guide-list{margin:0 0 var(--sp-2);padding:0;list-style:none;display:flex;flex-direction:column;gap:var(--sp-4)}
.contact-guide-list li{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink);word-break:keep-all;padding-left:18px;position:relative}
.contact-guide-list li::before{content:'';position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-blue)}
.contact-section{margin-top:var(--sp-7);padding-top:var(--sp-6);border-top:1px solid var(--border)}
.contact-photo{margin:var(--sp-7) 0 0;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:var(--surface);box-shadow:0 4px 20px rgba(28,40,69,.08)}
.contact-photo img{width:100%;height:auto;display:block}
.contact-photo figcaption{font-size:var(--fs-sm);line-height:var(--lh-snug);color:var(--ink-muted);padding:var(--sp-3) var(--sp-4);border-top:1px solid var(--border)}
.contact-info{margin-top:var(--sp-7);padding-top:var(--sp-6);border-top:1px solid var(--border)}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{padding:var(--sp-7) var(--gutter);box-sizing:border-box}
.site-footer-inner{max-width:var(--w-wide);margin:0 auto;display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:var(--sp-5)}
.site-footer-addr{font-size:var(--fs-sm);line-height:var(--lh-snug);color:var(--ink-muted)}
.site-footer-copy{font-size:var(--fs-xs);color:var(--ink-subtle)}

/* ==========================================================================
   Chips (filters)
   ========================================================================== */
.site-chip{font-size:var(--fs-sm);font-weight:var(--fw-medium);padding:var(--sp-2) var(--sp-4);border-radius:20px;cursor:pointer;user-select:none;border:1px solid var(--border);background:var(--surface);color:var(--ink-muted)}
.site-chip.is-on{border-color:var(--brand-blue);background:rgba(91,127,224,.14);color:var(--link)}

/* ==========================================================================
   News
   ========================================================================== */
.news-row{position:relative;display:flex;gap:var(--sp-5);padding:var(--sp-5) var(--sp-8) var(--sp-5) var(--sp-4);margin:0 calc(var(--sp-4) * -1);border-bottom:1px solid var(--border);border-radius:10px;align-items:flex-start;color:inherit;text-decoration:none;transition:background .2s ease,box-shadow .2s ease}
.news-row:last-child{border-bottom:none}
/* Accent bar wipes in from the left edge on hover. */
.news-row::before{content:'';position:absolute;left:0;top:50%;width:3px;height:0;border-radius:2px;background:linear-gradient(180deg,var(--brand-blue),var(--brand-red));transform:translateY(-50%);transition:height .22s ease}
/* Arrow slides in on the right. */
.news-row::after{content:'\2192';position:absolute;right:var(--sp-5);top:50%;transform:translateY(-50%);font-size:var(--fs-md);color:var(--brand-blue);opacity:0;transition:opacity .2s ease,right .2s ease}
.news-row:hover{background:rgba(255,255,255,.6);box-shadow:0 6px 20px rgba(28,40,69,.07)}
.news-row:hover::before{height:56%}
.news-row:hover::after{opacity:1;right:var(--sp-4)}

.news-date{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--ink-subtle);width:72px;flex:none;padding-top:3px;font-variant-numeric:tabular-nums;letter-spacing:.02em}
/* Category reads as a pill badge, not a line of text. */
.news-kind{display:inline-block;font-size:var(--fs-xs);font-weight:var(--fw-bold);line-height:var(--lh-snug);letter-spacing:.07em;text-transform:uppercase;color:var(--brand-red);background:rgba(179,39,42,.08);border:1px solid rgba(179,39,42,.2);padding:1px 10px;border-radius:999px;margin-bottom:var(--sp-2)}
.news-body{font-size:var(--fs-md);font-weight:var(--fw-bold);line-height:var(--lh-snug);color:var(--ink);letter-spacing:-.01em;transition:color .2s ease}
.news-row:hover .news-body{color:var(--link)}
.news-link{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--link);letter-spacing:.02em;transition:color .15s ease}
.news-link:hover{color:var(--link-hover)}

/* ==========================================================================
   Publications
   ========================================================================== */
.pub-item{padding:var(--sp-5) 0;border-bottom:1px solid var(--border)}
.pub-year{font-size:var(--fs-md);font-weight:var(--fw-bold);letter-spacing:.06em;text-transform:uppercase;color:var(--ink);margin:var(--sp-6) 0 var(--sp-5)}
.pub-year:first-of-type{margin-top:0}
.pub-count{font-size:var(--fs-sm);color:var(--ink-muted);margin:0 0 var(--sp-6)}
.pub-title{font-size:var(--fs-base);font-weight:var(--fw-bold);line-height:var(--lh-snug);margin:0 0 var(--sp-1);color:var(--ink)}
.pub-num{font-weight:var(--fw-bold);color:var(--link);margin-right:var(--sp-1)}
.pub-authors{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-muted)}
.pub-venue{font-size:var(--fs-sm);line-height:var(--lh-snug);color:var(--ink-subtle);margin-top:var(--sp-1)}
.pub-meta{font-size:var(--fs-xs);font-weight:var(--fw-medium);line-height:var(--lh-snug);color:var(--ink-strong);margin-top:var(--sp-1)}
.pub-doi{font-size:var(--fs-xs);font-weight:var(--fw-medium);color:var(--link);text-decoration:none}
.pub-doi:hover{color:var(--link-hover)}
.pub-notes{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-subtle)}
.pub-empty{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink-muted);text-align:center;padding:var(--sp-7) 0;border-top:1px solid var(--border)}

/* ==========================================================================
   Cards (Board / Research)
   ========================================================================== */
/* NOTE: the 28px 32px padding is load-bearing — Board.dc.html album photos
   use margin:-28px -32px to bleed to the card edge. Keep the two in sync. */
.board-card{border:1px solid var(--border);background:rgba(255,255,255,.74);padding:28px 32px;display:block;border-radius:var(--radius);box-shadow:0 1px 3px rgba(28,40,69,.05)}
.board-card-title{font-size:var(--fs-md);font-weight:var(--fw-bold);line-height:var(--lh-tight);margin:0 0 var(--sp-2);color:var(--ink)}
.board-card-body{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-muted);margin:0}
.research-card-img img{width:100%;height:auto;display:block;image-rendering:auto}
.board-photo-date{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--brand-red);margin-bottom:var(--sp-1)}
.board-photo-caption{font-size:var(--fs-sm);line-height:var(--lh-snug);color:var(--ink)}
.board-meta{font-size:var(--fs-sm);color:var(--ink-muted)}

/* ==========================================================================
   Home — hero & sections
   ========================================================================== */
.home-hero-wrap{max-width:var(--w-wide);margin:0 auto;padding:var(--sp-6) var(--gutter) 0;box-sizing:border-box;width:100%}
.home-hero-text{text-align:center;padding:var(--sp-7) var(--gutter) var(--sp-4);max-width:var(--w-wide);margin:0 auto;box-sizing:border-box;width:100%}
.home-section{max-width:var(--w-wide);margin:0 auto;width:100%;box-sizing:border-box;padding-left:var(--gutter);padding-right:var(--gutter)}

.hero-title{font-size:var(--fs-2xl);font-weight:var(--fw-bold);line-height:var(--lh-tight);margin:0 0 var(--sp-4);color:var(--ink);letter-spacing:-.02em}
.hero-nva{font-weight:var(--fw-bold);letter-spacing:.01em}
.hero-lab{font-weight:var(--fw-medium);color:var(--ink-muted);font-size:.9em}
.hero-affil{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink-subtle);margin:0}
.hero-affil a{color:var(--link);font-weight:var(--fw-bold);border-bottom:1px solid rgba(26,79,168,.28);transition:color .15s,border-color .15s}
.hero-affil a:hover{color:var(--link-hover);border-bottom-color:rgba(179,39,42,.45)}
.hero-affil .at{color:var(--ink-subtle);font-weight:var(--fw-regular);margin:0 5px}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-5) var(--sp-6);text-align:left}
.about-lead{font-size:var(--fs-md);font-weight:var(--fw-bold);line-height:var(--lh-body);color:var(--ink);margin:0 0 var(--sp-2);word-break:keep-all}
.about-body{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink-muted);margin:0 0 var(--sp-3);word-break:keep-all}
.about-body:last-child{margin-bottom:0}
.about-kw{font-weight:var(--fw-bold);color:var(--ink);border-bottom:1.5px solid rgba(91,127,224,.4)}
.about-hl{font-weight:var(--fw-bold);color:var(--ink-strong);background:linear-gradient(transparent 62%,rgba(242,167,27,.22) 62%)}
.about-hl a{color:inherit;border-bottom:1px solid rgba(26,79,168,.32);transition:color .15s,border-color .15s}
.about-hl a:hover{color:var(--link-hover);border-bottom-color:rgba(179,39,42,.45)}

.research-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-4)}
.research-card{position:relative;background:linear-gradient(160deg,rgba(255,255,255,.92) 0%,rgba(240,246,255,.72) 100%);border:1px solid rgba(255,255,255,.85);border-radius:12px;padding:var(--sp-5);box-shadow:0 2px 4px rgba(28,40,69,.05),0 10px 24px rgba(28,40,69,.1),inset 0 1px 0 rgba(255,255,255,.95);transform:translateY(0);transition:transform .22s ease,box-shadow .22s ease}
.research-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;border-radius:12px 12px 0 0;background:var(--accent,var(--brand-blue))}
.research-card:hover{transform:translateY(-5px);box-shadow:0 4px 8px rgba(28,40,69,.06),0 18px 36px rgba(28,40,69,.14),inset 0 1px 0 rgba(255,255,255,.95)}
.research-card.c-blue{--accent:var(--brand-blue)}
.research-card.c-red{--accent:var(--brand-red)}
.research-card.c-gold{--accent:var(--brand-gold)}
.research-card.c-teal{--accent:var(--brand-teal)}
.research-card h3{font-size:var(--fs-md);font-weight:var(--fw-bold);line-height:var(--lh-tight);margin:0 0 var(--sp-2);color:var(--ink)}
.research-card p{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink-muted);margin:0 0 var(--sp-3)}
.research-kw{display:flex;flex-wrap:wrap;gap:5px}
.research-kw span{font-size:var(--fs-xs);font-weight:var(--fw-medium);color:var(--ink-strong);background:rgba(91,127,224,.13);padding:var(--sp-1) 10px;border-radius:999px;box-shadow:0 1px 2px rgba(28,40,69,.06)}

/* ==========================================================================
   Text utilities
   ========================================================================== */
.text-muted{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-muted)}
.text-body{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink)}
.text-small{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-muted)}
.text-label{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--ink-muted)}
.text-accent{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--brand-red)}

/* ==========================================================================
   Director
   ========================================================================== */
.director-name{font-size:var(--fs-lg);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);margin:0 0 var(--sp-1)}
.director-profile .subsection-title{letter-spacing:-.01em;margin-bottom:var(--sp-5)}
.director-profile .subsection-title::after{content:'';display:block;width:32px;height:3px;margin-top:var(--sp-2);background:linear-gradient(90deg,var(--brand-blue),var(--brand-red));border-radius:2px}
.director-cv .cv-row{display:flex;gap:var(--sp-5)}
.director-cv .cv-date{font-size:var(--fs-sm);font-weight:var(--fw-bold);color:var(--ink-muted);flex:none}
.director-cv .cv-date.w-narrow{width:90px}
.director-cv .cv-date.w-wide{width:110px}
.director-cv .cv-body{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink)}
.director-cv .cv-note{font-size:var(--fs-sm);line-height:var(--lh-body);color:var(--ink-muted)}
.director-cv .cv-list{display:flex;flex-direction:column;gap:var(--sp-4);border-top:1px solid var(--border);padding-top:var(--sp-5)}
.director-about{margin-top:var(--sp-7);padding-top:var(--sp-6);border-top:1px solid var(--border)}
.director-about-body{display:flex;flex-direction:column;gap:var(--sp-4);max-width:100%}
.director-about-body p{font-size:var(--fs-base);line-height:var(--lh-body);color:var(--ink);margin:0;word-break:keep-all}
.director-about-body strong{font-weight:var(--fw-bold);color:var(--ink-strong)}
.director-collab{margin-top:var(--sp-7);padding-top:var(--sp-6);border-top:1px solid var(--border)}

/* ==========================================================================
   Members
   ========================================================================== */
.member-areas{display:flex;flex-direction:column;gap:var(--sp-6)}
.members-section-title{margin-bottom:var(--sp-5);text-align:center}
.members-section-title::after{content:'';display:block;width:32px;height:3px;margin:var(--sp-2) auto 0;background:linear-gradient(90deg,var(--brand-blue),var(--brand-red));border-radius:2px}
.member-groups{display:flex;flex-direction:column;gap:28px}
.member-group-title{font-size:var(--fs-md);font-weight:var(--fw-bold);color:var(--ink);margin:0 0 var(--sp-3);padding-bottom:var(--sp-2);border-bottom:1px solid var(--border);text-align:center}
.member-group-title::after{content:'';display:block;width:24px;height:3px;margin:6px auto 0;background:linear-gradient(90deg,var(--brand-blue),var(--brand-red));border-radius:2px}
.member-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.member-card{flex:0 1 calc(33.333% - 10px);min-width:300px;max-width:calc(33.333% - 10px);box-sizing:border-box;display:flex;align-items:stretch;gap:0;padding:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 4px rgba(28,40,69,.05)}
.member-card.placeholder{opacity:.72;border-style:dashed}
.member-photo{width:112px;flex:none;background:var(--surface-deep);overflow:hidden}
.member-photo img{width:100%;height:100%;min-height:100%;object-fit:cover;object-position:center top;display:block}
.member-photo--ishita img{object-position:center 48%}
.member-photo.empty{display:flex;align-items:center;justify-content:center;min-height:100%;font-size:var(--fs-xs);font-weight:var(--fw-medium);line-height:var(--lh-snug);color:var(--surface-soft);text-align:center;padding:var(--sp-2)}
.member-info{flex:1;min-width:0;padding:var(--sp-3) var(--sp-4);display:flex;flex-direction:column;justify-content:center}
.member-name{font-size:var(--fs-base);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);margin:0}
.member-name-ko{font-size:var(--fs-xs);font-weight:var(--fw-regular);color:var(--ink-muted)}
.member-status{display:inline-block;font-size:var(--fs-xs);font-weight:var(--fw-bold);color:var(--brand-red);background:rgba(179,39,42,.08);padding:2px var(--sp-2);border-radius:999px;margin-top:var(--sp-1)}
.member-edu-list{margin:var(--sp-1) 0 0}
.member-edu{font-size:var(--fs-xs);line-height:var(--lh-snug);color:var(--ink-subtle)}
.member-area-tag{font-size:var(--fs-xs);font-weight:var(--fw-bold);color:var(--ink-strong);background:rgba(91,127,224,.13);padding:3px var(--sp-2);border-radius:999px;display:inline-block;margin-top:var(--sp-1)}
.member-advisor{font-size:var(--fs-xs);line-height:var(--lh-snug);color:var(--ink-muted);margin:var(--sp-1) 0 0}
.member-advisor-label{font-weight:var(--fw-bold)}
.member-advisor-name{font-size:var(--fs-sm);font-weight:var(--fw-bold);line-height:var(--lh-snug);color:var(--ink);margin-left:3px}
.member-advisor-aff{font-weight:var(--fw-regular)}
.member-email{font-size:var(--fs-xs);color:var(--link);margin-top:var(--sp-1);display:block;word-break:break-all}

/* ==========================================================================
   Collaborators
   ========================================================================== */
.collab-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-4)}
.collab-logo{display:flex;align-items:center;justify-content:center;min-height:72px;padding:var(--sp-4);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 2px 8px rgba(28,40,69,.05)}
.collab-logo img{max-height:44px;max-width:100%;object-fit:contain;display:block}
.collab-logo img.wide{max-height:40px}
.collab-logo img.yonsei{max-height:68px}
.collab-logo img.seal{max-height:58px}
.collab-logo span{font-size:var(--fs-xs);font-weight:var(--fw-bold);line-height:var(--lh-tight);color:var(--ink);text-align:center;word-break:keep-all}
.album-photo{aspect-ratio:4/3;overflow:hidden;margin:-28px -32px var(--sp-4);background:var(--surface-soft)}

/* ==========================================================================
   Layout blocks lifted out of inline styles
   ========================================================================== */
.hero-banner{overflow:hidden;border-radius:10px;box-shadow:0 4px 20px rgba(28,40,69,.1);aspect-ratio:1684/454;background:var(--surface-soft)}
.hero-banner img{width:100%;height:100%;object-fit:cover;display:block}
.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:var(--sp-4);margin-bottom:var(--sp-5)}

.director-grid{display:grid;grid-template-columns:280px 1fr;gap:var(--gutter)}
.director-photo{width:100%;aspect-ratio:3/4;background:var(--surface-deep);margin-bottom:var(--sp-5);overflow:hidden;border-radius:var(--radius)}
.alumni-table{border-top:1px solid var(--border);margin-top:var(--sp-4)}
.alumni-row{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:var(--sp-3);padding:var(--sp-4) var(--sp-1);border-bottom:1px solid var(--border)}

.album-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-5)}
.research-stack{display:flex;flex-direction:column;gap:var(--sp-7)}
.board-card-body-wrap{padding:28px 32px}

/* ==========================================================================
   Responsive
   Three breakpoints: tablet, phone (nav collapses), small phone.
   ========================================================================== */
@media (max-width:1024px){
  :root{--gutter:32px}
  .site-main{padding-bottom:var(--sp-7)}
  .collab-grid{grid-template-columns:repeat(3,1fr)}
  .album-grid{grid-template-columns:repeat(2,1fr)}
  .director-grid{grid-template-columns:220px 1fr;gap:var(--sp-6)}
  .site-main--contact{gap:var(--sp-6)}
}

@media (max-width:768px){
  :root{--gutter:20px;--fs-2xl:1.875rem;--fs-xl:1.5rem;--fs-lg:1.25rem}

  /* --- Header collapses to a toggle-driven panel --- */
  .site-header{position:relative}
  .site-header-bar{height:64px;gap:var(--sp-3)}
  .nav-toggle{display:flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:40;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:var(--sp-2) var(--gutter) var(--sp-4);
    background:rgba(255,255,255,.97);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    box-shadow:0 12px 28px rgba(28,40,69,.14);
    border-bottom:1px solid var(--border);
  }
  .site-nav.is-open{display:flex}
  .site-nav>a,.site-nav>div>a{
    padding:var(--sp-3) 0;border-bottom:1px solid var(--border);
    border-left:3px solid transparent;padding-left:var(--sp-3);
  }
  .site-nav>a:hover,.site-nav>div>a:hover,
  .site-nav>a.nav-active,.site-nav>div>a.nav-active{
    border-bottom-color:var(--border);border-left-color:var(--brand-blue);
  }
  /* Sub-menus cannot rely on hover on a touch screen: show them inline.
     The inline style from the DC runtime is overridden on purpose. */
  .nav-drop{
    position:static!important;opacity:1!important;visibility:visible!important;
    transform:none!important;box-shadow:none!important;border:none!important;
    background:transparent!important;min-width:0!important;padding:0!important;
    display:flex;flex-direction:column;
  }
  .nav-drop a{padding:var(--sp-2) 0 var(--sp-2) var(--sp-6);font-size:var(--fs-sm);border-bottom:1px solid var(--border)}

  /* --- Content --- */
  .page-header{padding:var(--sp-4) var(--gutter) var(--sp-5)}
  .site-main{padding-top:var(--sp-6)}
  .home-hero-wrap{padding-top:var(--sp-4)}
  .home-hero-text{padding:var(--sp-6) var(--gutter) var(--sp-3)}
  .hero-banner{aspect-ratio:16/9}
  .about-grid,.research-grid,.site-main--contact,.director-grid{grid-template-columns:1fr}
  .site-main--contact{gap:var(--sp-6)}
  .director-grid{gap:var(--sp-5)}
  .director-photo{max-width:260px;margin-left:auto;margin-right:auto}
  .album-grid{grid-template-columns:repeat(2,1fr);gap:var(--sp-4)}
  .collab-grid{grid-template-columns:repeat(2,1fr)}
  .research-stack{gap:var(--sp-5)}
  .board-card{padding:var(--sp-5) var(--sp-5)}
  .board-card-body-wrap{padding:var(--sp-5)}
  /* Album photos bleed to the card edge; keep the pull matched to the padding. */
  .board-card .album-photo{margin:calc(var(--sp-5) * -1) calc(var(--sp-5) * -1) var(--sp-4)}
  .member-card{flex:0 1 100%;max-width:100%;min-width:0}
  .alumni-row{grid-template-columns:1fr;gap:var(--sp-1);padding:var(--sp-3) 0}
  .news-row{padding-right:var(--sp-4)}
  .news-row::after{display:none}
  .site-footer-inner{flex-direction:column;align-items:flex-start;gap:var(--sp-4)}
}

@media (max-width:560px){
  .hero-banner{aspect-ratio:4/3}
  .album-grid,.collab-grid{grid-template-columns:1fr}
  .research-card{padding:var(--sp-4)}
  .board-card,.board-card-body-wrap{padding:var(--sp-4)}
  .board-card .album-photo{margin:calc(var(--sp-4) * -1) calc(var(--sp-4) * -1) var(--sp-3)}
  .news-row{gap:var(--sp-3);flex-direction:column}
  .news-date{width:auto;padding-top:0}
  .site-main{padding-bottom:var(--sp-6)}
}