/* ==========================================================================
   GCBC — Design System
   Dark aurora / glassmorphism theme for Kellogg Greater China Business Conference
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --bg-0:#060310;
  --bg-1:#0b0620;
  --bg-2:#120a2e;
  --surface:rgba(255,255,255,0.045);
  --surface-strong:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.10);
  --border-strong:rgba(255,255,255,0.18);

  --text-0:#f6f4fb;
  --text-1:#cdc5e0;
  --text-2:#9188ab;

  --purple:#7c3aed;
  --purple-deep:#4c1d95;
  --violet:#8b5cf6;
  --magenta:#d946ef;
  --pink:#ec4899;
  --cyan:#22d3ee;
  --gold:#f4c04e;

  --grad-aurora: linear-gradient(120deg,#1e1b4b 0%, #4c1d95 28%, #7c3aed 52%, #d946ef 78%, #ec4899 100%);
  --grad-text: linear-gradient(90deg,#93c5fd 0%,#c4b5fd 30%,#e879f9 65%,#f9a8d4 100%);
  --grad-line: linear-gradient(90deg, transparent, var(--violet), var(--pink), transparent);

  --shadow-glow: 0 0 0 1px rgba(255,255,255,0.06), 0 20px 60px -20px rgba(124,58,237,0.55);
  --shadow-soft: 0 10px 40px -15px rgba(0,0,0,0.6);

  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:10px;

  --ease: cubic-bezier(.22,.9,.3,1);
  --nav-h:76px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; overflow-x:hidden; }
[id]{ scroll-margin-top:calc(var(--nav-h) + 24px); }
body{
  margin:0;
  font-family:'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:var(--bg-0);
  color:var(--text-0);
  position:relative;
  opacity:0;
  transform:translateY(8px);
  animation: pageIn .6s var(--ease) forwards;
}
@keyframes pageIn{ to{ opacity:1; transform:translateY(0); } }
@keyframes pageOut{ to{ opacity:0; transform:translateY(-8px); } }
body.page-out{ animation:pageOut .32s var(--ease) forwards; pointer-events:none; }

h1,h2,h3,h4{
  font-family:'Sora', 'Inter', sans-serif;
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em; color:var(--text-1); line-height:1.75; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }

::selection{ background:var(--magenta); color:#fff; }

::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-track{ background:var(--bg-0); }
::-webkit-scrollbar-thumb{ background:linear-gradient(var(--violet), var(--pink)); border-radius:10px; border:2px solid var(--bg-0); }

.container{ width:min(1180px, 92%); margin-inline:auto; }

/* ---------------------------------------------------------------- noise ---- */
.noise-layer{
  position:fixed; inset:0; z-index:0; pointer-events:none; opacity:.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------------------------------------------------- scroll progress */
.scroll-progress{
  position:fixed; top:0; left:0; height:3px; width:0%; z-index:2000;
  background:linear-gradient(90deg,var(--cyan),var(--violet),var(--pink));
  box-shadow:0 0 12px rgba(217,70,239,.7);
  transition:width .08s linear;
}

/* ---------------------------------------------------------------- aurora --- */
.aurora-bg{
  position:fixed; inset:0; z-index:0; overflow:hidden; pointer-events:none; background:var(--bg-0);
}
.aurora-bg .blob{
  position:absolute; border-radius:50%; filter:blur(60px); opacity:.5; mix-blend-mode:screen;
  will-change:transform; transform:translateZ(0);
}
.aurora-bg .blob-1{ width:38vw; height:38vw; left:-8vw; top:-12vw; background:radial-gradient(circle at 30% 30%, #7c3aed, transparent 70%); animation:float1 28s ease-in-out infinite; }
.aurora-bg .blob-2{ width:32vw; height:32vw; right:-10vw; top:4vw; background:radial-gradient(circle at 60% 40%, #d946ef, transparent 70%); animation:float2 32s ease-in-out infinite; }
.aurora-bg .blob-3{ width:30vw; height:30vw; left:18vw; bottom:-16vw; background:radial-gradient(circle at 50% 50%, #22d3ee, transparent 70%); animation:float3 36s ease-in-out infinite; opacity:.3; }
.aurora-bg .grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, black 10%, transparent 70%);
}
@keyframes float1{ 0%,100%{ transform:translate(0,0) scale(1);} 50%{ transform:translate(6vw,8vw) scale(1.12);} }
@keyframes float2{ 0%,100%{ transform:translate(0,0) scale(1);} 50%{ transform:translate(-7vw,6vw) scale(0.92);} }
@keyframes float3{ 0%,100%{ transform:translate(0,0) scale(1);} 50%{ transform:translate(4vw,-6vw) scale(1.08);} }

/* ================================================================= NAV === */
.site-nav{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  height:var(--nav-h);
  display:flex; align-items:center;
  background:rgba(7,4,18,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .3s var(--ease), height .3s var(--ease), border-color .3s var(--ease);
}
.site-nav.scrolled{ height:62px; background:rgba(7,4,18,.72); border-color:var(--border); }
.nav-inner{ width:min(1280px,94%); margin-inline:auto; display:flex; align-items:center; justify-content:space-between; gap:24px; }
.nav-brand{
  display:flex; align-items:center; gap:16px; padding:6px 2px;
  transition:transform .35s var(--ease), filter .35s var(--ease);
}
.nav-brand:hover{ transform:translateY(-2px); filter:drop-shadow(0 6px 18px rgba(124,58,237,.45)); }
.nav-brand img{ height:32px; width:auto; filter:drop-shadow(0 2px 8px rgba(0,0,0,.4)); }
.nav-brand .divider{ width:1px; height:28px; background:rgba(255,255,255,.22); }
.nav-brand .gcbc-logo{ height:38px; }

.nav-links{ display:flex; align-items:center; gap:4px; }
.nav-links a{
  position:relative; padding:10px 16px; font-size:.84rem; font-weight:600; letter-spacing:.04em;
  color:var(--text-1); border-radius:999px; transition:color .25s var(--ease);
}
.nav-links a::after{
  content:''; position:absolute; left:16px; right:16px; bottom:6px; height:2px; border-radius:2px;
  background:var(--grad-text); transform:scaleX(0); transform-origin:left; transition:transform .3s var(--ease);
}
.nav-links a:hover{ color:var(--text-0); }
.nav-links a:hover::after, .nav-links a.active::after{ transform:scaleX(1); }
.nav-links a.active{ color:var(--text-0); }

.nav-toggle{
  display:none; width:42px; height:42px; border-radius:12px; border:1px solid var(--border);
  background:var(--surface); cursor:pointer; position:relative; z-index:1100;
}
.nav-toggle span{ position:absolute; left:10px; right:10px; height:2px; background:#fff; border-radius:2px; transition:transform .3s var(--ease), opacity .3s var(--ease); }
.nav-toggle span:nth-child(1){ top:14px; }
.nav-toggle span:nth-child(2){ top:20px; }
.nav-toggle span:nth-child(3){ top:26px; }
.nav-toggle.open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

/* ============================================================== BUTTONS === */
.btn{
  position:relative; display:inline-flex; align-items:center; gap:10px;
  padding:14px 30px; font-weight:700; font-size:.86rem; letter-spacing:.02em;
  border-radius:999px; border:1px solid transparent; cursor:pointer; overflow:hidden;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
  isolation:isolate;
}
.btn-primary{ background:var(--grad-aurora); background-size:200% 200%; color:#fff; box-shadow:0 10px 30px -8px rgba(217,70,239,.55); }
.btn-primary:hover{ transform:translateY(-3px); box-shadow:0 16px 40px -10px rgba(217,70,239,.75); background-position:100% 50%; }
.btn-ghost{ background:var(--surface); color:var(--text-0); border-color:var(--border-strong); backdrop-filter:blur(10px); }
.btn-ghost:hover{ transform:translateY(-3px); border-color:var(--violet); box-shadow:0 10px 30px -10px rgba(124,58,237,.5); }
.btn::before{
  content:''; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35) 48%, transparent 66%);
  transform:translateX(-120%); transition:transform .7s var(--ease);
}
.btn:hover::before{ transform:translateX(120%); }

/* =============================================================== HERO ==== */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center; padding-top:var(--nav-h);
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; object-position:35% center; transform:scale(1.06); }
.hero-media::after{
  content:''; position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(6,3,16,.35) 0%, rgba(6,3,16,.55) 55%, var(--bg-0) 96%),
    linear-gradient(100deg, rgba(10,5,25,.75) 0%, rgba(10,5,25,.15) 45%);
}
.hero-content{ position:relative; z-index:2; width:min(880px,92%); margin-inline:auto; text-align:center; padding:64px 0 120px; }
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:10px; padding:8px 18px; border-radius:999px;
  background:var(--surface); border:1px solid var(--border-strong); backdrop-filter:blur(10px);
  font-size:.74rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--text-1);
  margin-bottom:28px; animation:fadeUp .8s var(--ease) both; animation-delay:.05s;
}
.hero-eyebrow .dot{ width:7px; height:7px; border-radius:50%; background:var(--gold); box-shadow:0 0 10px var(--gold); animation:pulse 1.8s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{ opacity:1; transform:scale(1);} 50%{ opacity:.4; transform:scale(1.4);} }

.hero-title{
  font-size:clamp(2.3rem, 5.6vw, 4.4rem); font-weight:800; margin-bottom:18px;
  background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent;
  background-size:200% auto; animation:fadeUp .8s var(--ease) both, shimmer 8s linear infinite;
  animation-delay:.12s, 0s;
}
@keyframes shimmer{ to{ background-position:200% center; } }
@keyframes fadeUp{ from{ opacity:0; transform:translateY(26px);} to{ opacity:1; transform:translateY(0);} }

.hero-status{ font-size:clamp(1.2rem,2.4vw,1.7rem); font-weight:700; color:var(--text-0); margin-bottom:22px; animation:fadeUp .8s var(--ease) both; animation-delay:.2s; }

/* ------------------------------------------------------- flip countdown --- */
.countdown{
  display:flex; align-items:flex-start; justify-content:center; gap:10px; flex-wrap:wrap;
  margin-bottom:26px; perspective:600px;
  animation:fadeUp .8s var(--ease) both; animation-delay:.2s;
}
.countdown.is-done{ display:block; }
.countdown-message{
  font-size:clamp(1.2rem,2.4vw,1.7rem); font-weight:700; color:var(--text-0);
}
.countdown-group{ display:flex; flex-direction:column; align-items:center; gap:10px; }
.countdown-digits{ display:flex; gap:4px; }
.countdown-colon{
  align-self:center; margin-top:-22px; font-size:clamp(1.4rem,3vw,2rem); font-weight:800; color:var(--text-2);
}
.flip-card{
  position:relative; width:clamp(34px,4.4vw,52px); height:clamp(46px,6vw,70px);
  border-radius:10px; background:linear-gradient(165deg, rgba(36,24,58,.95), rgba(10,6,20,.97));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 14px 28px -14px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.08);
  display:flex; align-items:center; justify-content:center; overflow:hidden;
  transform-style:preserve-3d;
}
.flip-card::after{
  content:''; position:absolute; left:0; right:0; top:50%; height:1px; background:rgba(0,0,0,.5); z-index:2;
}
.flip-card span{
  font-family:'Sora',sans-serif; font-weight:800; font-size:clamp(1.3rem,3.4vw,2.1rem);
  background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent;
  line-height:1;
}
.flip-card.flipping{ animation:flipCard .5s ease; }
@keyframes flipCard{
  0%{ transform:rotateX(0deg); }
  49%{ transform:rotateX(-90deg); }
  50%{ transform:rotateX(90deg); }
  100%{ transform:rotateX(0deg); }
}
.countdown-label{
  font-size:.68rem; font-weight:700; letter-spacing:.16em; text-transform:uppercase; color:var(--text-2);
}
.hero-meta{
  display:flex; flex-wrap:wrap; justify-content:center; gap:14px; margin-bottom:28px;
  animation:fadeUp .8s var(--ease) both; animation-delay:.28s;
}
.hero-meta .pill{
  display:flex; align-items:center; gap:8px; padding:9px 16px; border-radius:999px;
  background:var(--surface); border:1px solid var(--border); font-size:.84rem; color:var(--text-1);
}
.hero-meta .pill svg{ width:15px; height:15px; flex:none; color:var(--violet); }

.hero-desc{ color:var(--text-1); font-size:1.05rem; max-width:680px; margin:0 auto 34px; }
.hero-cta{ display:flex; justify-content:center; gap:16px; flex-wrap:wrap; animation:fadeUp .8s var(--ease) both; animation-delay:.4s; }

.scroll-cue{
  position:absolute; left:50%; bottom:28px; transform:translateX(-50%); z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:8px; color:var(--text-2); font-size:.7rem; letter-spacing:.18em;
}
.scroll-cue .wheel{ width:22px; height:36px; border-radius:14px; border:1px solid var(--border-strong); position:relative; }
.scroll-cue .wheel::before{ content:''; position:absolute; top:6px; left:50%; width:3px; height:7px; background:var(--grad-text); border-radius:2px; transform:translateX(-50%); animation:scrollCue 1.8s ease-in-out infinite; }
@keyframes scrollCue{ 0%{ opacity:1; top:6px;} 70%{ opacity:0; top:18px;} 100%{opacity:0; top:6px;} }

/* ============================================================= SECTION === */
.section{ position:relative; z-index:1; padding:56px 0; }
.section-tight{ padding:36px 0; }
.section-head{ text-align:center; max-width:760px; margin:0 auto 56px; }
.eyebrow{
  display:inline-block; font-size:.74rem; font-weight:700; letter-spacing:.2em; text-transform:uppercase;
  color:transparent; background:var(--grad-text); -webkit-background-clip:text; background-clip:text; margin-bottom:14px;
}
.section-title{ font-size:clamp(1.7rem,3.4vw,2.6rem); font-weight:800; color:var(--text-0); }
.section-sub{ color:var(--text-1); font-size:1.02rem; }

.divider-glow{ height:1px; width:100%; background:var(--grad-line); border:0; margin:0; opacity:.6; }

/* -------------------------------------------------------------- reveal --- */
.reveal{ opacity:0; transform:translateY(34px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible{ opacity:1; transform:translateY(0); }
.reveal-scale{ opacity:0; transform:scale(.92); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal-scale.is-visible{ opacity:1; transform:scale(1); }

/* ================================================================ CARDS == */
.glass-card{
  position:relative; border-radius:var(--radius-lg); background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.025));
  border:1px solid var(--border);
  overflow:hidden; transition:transform .45s var(--ease), border-color .45s var(--ease), box-shadow .45s var(--ease);
  transform-style:preserve-3d;
}
.glass-card::before{
  content:''; position:absolute; inset:0; border-radius:inherit; padding:1px; opacity:0; pointer-events:none;
  background:var(--grad-aurora); -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude; transition:opacity .4s var(--ease);
}
.glass-card:hover::before{ opacity:.9; }
.glass-card:hover{ border-color:transparent; box-shadow:var(--shadow-glow); }
.glass-card::after{
  content:''; position:absolute; inset:0; z-index:0; opacity:0; pointer-events:none; border-radius:inherit;
  background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%), rgba(217,70,239,.22), transparent 60%);
  transition:opacity .4s var(--ease);
}
.glass-card:hover::after{ opacity:1; }

/* ============================================================ GALLERY === */
.gallery-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.gallery-item{
  position:relative; border-radius:var(--radius-md); overflow:hidden; aspect-ratio:4/3; cursor:pointer;
  border:1px solid var(--border); background:var(--bg-2);
}
.gallery-item img{ width:100%; height:100%; object-fit:cover; transition:transform .7s var(--ease), filter .5s var(--ease); }
.gallery-item:hover img{ transform:scale(1.12); filter:saturate(1.15); }
.gallery-item .gi-overlay{
  position:absolute; inset:0; display:flex; align-items:flex-end; padding:16px;
  background:linear-gradient(0deg, rgba(10,5,22,.85) 0%, transparent 55%);
  opacity:0; transition:opacity .4s var(--ease);
}
.gallery-item:hover .gi-overlay{ opacity:1; }
.gallery-item .gi-overlay span{ font-size:.78rem; font-weight:600; color:var(--text-0); display:flex; align-items:center; gap:6px; }
.gallery-item .gi-icon{
  position:absolute; top:14px; right:14px; width:34px; height:34px; border-radius:50%;
  background:rgba(255,255,255,.12); backdrop-filter:blur(6px); display:flex; align-items:center; justify-content:center;
  opacity:0; transform:scale(.7); transition:opacity .35s var(--ease), transform .35s var(--ease);
}
.gallery-item:hover .gi-icon{ opacity:1; transform:scale(1); }
.gallery-item .gi-icon svg{ width:16px; height:16px; color:#fff; }

/* lightbox */
.lightbox{
  position:fixed; inset:0; z-index:3000; display:flex; align-items:center; justify-content:center;
  background:rgba(4,2,10,.92); backdrop-filter:blur(10px); opacity:0; pointer-events:none;
  transition:opacity .35s var(--ease);
}
.lightbox.open{ opacity:1; pointer-events:auto; }
.lightbox img{ max-width:min(86vw,1100px); max-height:80vh; border-radius:14px; box-shadow:0 30px 90px -20px rgba(0,0,0,.8);
  transform:scale(.92); transition:transform .4s var(--ease); }
.lightbox.open img{ transform:scale(1); }
.lightbox .lb-close, .lightbox .lb-nav{
  position:absolute; width:46px; height:46px; border-radius:50%; background:var(--surface-strong);
  border:1px solid var(--border-strong); color:#fff; display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition:background .25s, transform .25s;
}
.lightbox .lb-close{ top:24px; right:24px; }
.lightbox .lb-close:hover, .lightbox .lb-nav:hover{ background:var(--purple); transform:scale(1.08); }
.lightbox .lb-prev{ left:24px; top:50%; transform:translateY(-50%); }
.lightbox .lb-next{ right:24px; top:50%; transform:translateY(-50%); }
.lightbox .lb-prev:hover, .lightbox .lb-next:hover{ transform:translateY(-50%) scale(1.08); }

/* ============================================================ SPONSORS === */
.sponsor-wrap{
  display:flex; justify-content:center; align-items:center; padding:46px; border-radius:var(--radius-lg);
}
.sponsor-wrap img{ max-height:120px; width:auto; filter:drop-shadow(0 10px 30px rgba(0,0,0,.4)); transition:transform .4s var(--ease); }
.sponsor-wrap:hover img{ transform:scale(1.04); }
.sponsor-strip{ display:flex; flex-wrap:wrap; gap:12px; justify-content:center; }
.sponsor-chip{
  padding:10px 20px; border-radius:999px; background:var(--surface); border:1px solid var(--border);
  font-weight:600; font-size:.88rem; color:var(--text-1); transition:all .3s var(--ease);
}
.sponsor-chip:hover{ color:#fff; border-color:var(--violet); transform:translateY(-2px); box-shadow:0 8px 20px -8px rgba(124,58,237,.5); }

/* -------------------------------------------------------- logo marquee --- */
.logo-marquee{
  position:relative; overflow:hidden; padding:44px 0;
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image:linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logo-marquee-track{
  display:flex; align-items:center; width:max-content;
  animation:marquee-scroll 28s linear infinite;
}
.logo-marquee:hover .logo-marquee-track{ animation-play-state:paused; }
.logo-marquee-item{
  display:flex; align-items:center; justify-content:center;
  margin:0 18px; flex:none;
  background:rgba(243,240,250,.94);
  border-radius:16px;
  padding:18px 30px;
  box-shadow:0 12px 28px -14px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.5);
  transition:transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
}
.logo-marquee-item img{
  height:40px; max-width:190px; width:auto; object-fit:contain;
  display:block;
}
.logo-marquee-item:hover{
  transform:translateY(-4px) scale(1.04);
  background:#fff;
  box-shadow:0 18px 40px -16px rgba(217,70,239,.45), inset 0 0 0 1px rgba(255,255,255,.7);
}
@keyframes marquee-scroll{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }
@media (prefers-reduced-motion:reduce){
  .logo-marquee-track{ animation:none; }
}

/* ============================================================== PEOPLE === */
.people-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:22px; }
.people-grid.cols-6{ grid-template-columns:repeat(6,1fr); }
.person-card{ padding:22px; text-align:center; }
.person-photo{
  width:112px; height:112px; border-radius:50%; margin:0 auto 18px; overflow:hidden;
  border:2px solid var(--border-strong); position:relative; isolation:isolate;
}
.person-photo::before{
  content:''; position:absolute; inset:-2px; border-radius:50%; z-index:-1; background:var(--grad-aurora);
  opacity:0; transition:opacity .4s var(--ease);
}
.glass-card:hover .person-photo::before{ opacity:1; }
.person-photo img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.glass-card:hover .person-photo img{ transform:scale(1.08); }
.person-name{ font-family:'Sora',sans-serif; font-weight:700; font-size:1.02rem; color:var(--text-0); margin-bottom:4px; }
.person-role{ font-size:.82rem; color:var(--text-2); margin-bottom:2px; }
.person-org{ font-size:.82rem; color:var(--violet); font-weight:600; margin-bottom:14px; }
.connect-link{
  display:inline-flex; align-items:center; gap:6px; font-size:.76rem; font-weight:700; letter-spacing:.04em;
  color:var(--text-1); padding:7px 16px; border-radius:999px; border:1px solid var(--border-strong);
  transition:all .3s var(--ease);
}
.connect-link:hover{ color:#fff; background:var(--grad-aurora); border-color:transparent; box-shadow:0 8px 24px -8px rgba(217,70,239,.6); }
.connect-link svg{ width:13px; height:13px; }

.team-group{ margin-bottom:68px; }
.team-group-title{
  display:flex; align-items:center; gap:14px; margin-bottom:28px; font-size:1.05rem; font-weight:700;
  letter-spacing:.08em; text-transform:uppercase; color:var(--text-0);
}
.team-group-title::after{ content:''; flex:1; height:1px; background:var(--grad-line); }
.team-group-title .idx{
  width:30px; height:30px; border-radius:9px; display:flex; align-items:center; justify-content:center;
  background:var(--grad-aurora); font-size:.78rem; font-family:'Sora',sans-serif;
}

/* ============================================================== STATS === */
.stats-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.stat-card{ padding:30px 22px; text-align:center; }
.stat-num{
  font-family:'Sora',sans-serif; font-weight:800; font-size:clamp(1.9rem,3.4vw,2.6rem);
  background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent; margin-bottom:6px;
}
.stat-label{ font-size:.82rem; color:var(--text-2); letter-spacing:.04em; }

/* ============================================================= PANELS === */
.timeline{ position:relative; max-width:960px; margin:0 auto; }
.timeline::before{
  content:''; position:absolute; left:19px; top:6px; bottom:6px; width:2px; background:rgba(255,255,255,.08);
}
.timeline-progress{
  position:absolute; left:19px; top:6px; width:2px; height:0;
  background:linear-gradient(180deg, var(--cyan), var(--violet) 55%, var(--pink));
  box-shadow:0 0 10px rgba(217,70,239,.65), 0 0 2px rgba(34,211,238,.8);
  border-radius:2px;
}
.panel-item{ position:relative; padding-left:64px; margin-bottom:22px; }
.panel-dot{
  position:absolute; left:8px; top:26px; width:24px; height:24px; border-radius:50%;
  background:var(--bg-0); border:2px solid var(--border-strong); display:flex; align-items:center; justify-content:center;
  box-shadow:0 0 0 6px rgba(124,58,237,.08); z-index:2;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.panel-dot::after{ content:''; width:8px; height:8px; border-radius:50%; background:var(--border-strong); transition:background .3s var(--ease); }
.panel-item.is-passed .panel-dot{ border-color:var(--violet); box-shadow:0 0 0 6px rgba(124,58,237,.16); }
.panel-item.is-passed .panel-dot::after{ background:var(--grad-aurora); }
.panel-card{ cursor:pointer; }
.panel-head{ display:flex; align-items:center; justify-content:space-between; gap:20px; padding:20px; }
.panel-thumb{
  flex:none; width:116px; height:116px; border-radius:14px; position:relative; isolation:isolate;
  cursor:zoom-in; overflow:hidden; background:var(--bg-2);
  box-shadow:0 14px 30px -14px rgba(0,0,0,.65);
}
.panel-thumb::before{
  content:''; position:absolute; inset:-2px; border-radius:16px; z-index:-1;
  background:var(--grad-aurora); opacity:0; transition:opacity .4s var(--ease);
}
.panel-thumb img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .6s var(--ease); }
.panel-card:hover .panel-thumb::before{ opacity:1; }
.panel-card:hover .panel-thumb img{ transform:scale(1.09); }
.panel-head-text{ flex:1; min-width:0; }
.panel-tag{ font-size:.72rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--cyan); margin-bottom:8px; display:block; }
.panel-title{ font-size:1.12rem; font-weight:700; color:var(--text-0); margin-bottom:10px; }
.panel-speakers{ font-size:.86rem; color:var(--text-2); line-height:1.7; }
.panel-speakers b{ color:var(--text-1); font-weight:600; }
.panel-chevron{
  flex:none; width:36px; height:36px; border-radius:50%; background:var(--surface); border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center; transition:transform .4s var(--ease), background .3s;
}
.panel-card.open .panel-chevron{ transform:rotate(135deg); background:var(--grad-aurora); border-color:transparent; }
.panel-chevron svg{ width:16px; height:16px; }
.panel-body{ max-height:0; overflow:hidden; transition:max-height .55s var(--ease); }
.panel-body-inner{ padding:4px 26px 28px calc(116px + 20px + 20px); border-top:1px solid var(--border); margin-top:4px; padding-top:18px; }
.panel-body-inner p{ font-size:.92rem; }
.panel-body-inner p:last-child{ margin-bottom:0; }

/* ------------------------------------------------------- recap banner --- */
.recap-banner{ padding:0 !important; overflow:hidden; }
.recap-banner-media{ width:100%; height:320px; overflow:hidden; position:relative; cursor:zoom-in; }
.recap-banner-media img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .7s var(--ease); }
.recap-banner:hover .recap-banner-media img{ transform:scale(1.04); }
.recap-banner-media::after{
  content:''; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, rgba(6,3,16,0) 45%, rgba(10,6,20,.92) 100%);
}
.recap-banner-body{ padding:34px 40px 40px; }

/* =============================================================== FORM === */
.form-card{ padding:40px; max-width:560px; margin:0 auto; }
.field{ margin-bottom:20px; position:relative; }
.field label{ display:block; font-size:.76rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--text-2); margin-bottom:8px; }
.field input, .field textarea{
  width:100%; padding:14px 16px; border-radius:12px; background:rgba(255,255,255,.04);
  border:1px solid var(--border); color:var(--text-0); font-family:inherit; font-size:.94rem;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.field input::placeholder, .field textarea::placeholder{ color:var(--text-2); }
.field input:focus, .field textarea:focus{
  outline:none; border-color:var(--violet); background:rgba(124,58,237,.08);
  box-shadow:0 0 0 4px rgba(124,58,237,.15);
}
.form-success{
  display:none; align-items:center; gap:10px; padding:14px 18px; border-radius:12px; margin-top:16px;
  background:rgba(34,211,238,.1); border:1px solid rgba(34,211,238,.3); color:#a5f3fc; font-size:.88rem; font-weight:600;
}
.form-success.show{ display:flex; animation:fadeUp .5s var(--ease); }

.contact-info{ display:flex; align-items:center; gap:12px; justify-content:center; color:var(--text-1); font-size:.95rem; margin-bottom:10px; }
.contact-info svg{ width:18px; height:18px; color:var(--violet); flex:none; }

/* ============================================================= FOOTER === */
.site-footer{ position:relative; z-index:1; padding:56px 0 30px; border-top:1px solid var(--border); margin-top:60px; }
.footer-top{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:24px; margin-bottom:34px; }
.footer-brand{ display:flex; align-items:center; gap:14px; }
.footer-brand img{ height:36px; filter:drop-shadow(0 2px 8px rgba(0,0,0,.4)); }
.footer-links{ display:flex; gap:26px; flex-wrap:wrap; }
.footer-links a{ font-size:.86rem; color:var(--text-1); font-weight:600; transition:color .25s; }
.footer-links a:hover{ color:#fff; }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; color:var(--text-2); font-size:.8rem; }

.back-to-top{
  position:fixed; right:26px; bottom:26px; width:50px; height:50px; border-radius:50%; z-index:900;
  background:var(--grad-aurora); display:flex; align-items:center; justify-content:center; cursor:pointer;
  box-shadow:0 10px 30px -8px rgba(217,70,239,.6); opacity:0; pointer-events:none; transform:translateY(16px) scale(.8);
  transition:opacity .35s var(--ease), transform .35s var(--ease);
}
.back-to-top.show{ opacity:1; pointer-events:auto; transform:translateY(0) scale(1); }
.back-to-top svg{ width:20px; height:20px; color:#fff; }
.back-to-top:hover{ transform:translateY(-4px) scale(1.05); }

/* ============================================================ PAGE HERO === */
.page-hero{ position:relative; padding:calc(var(--nav-h) + 86px) 0 90px; text-align:center; overflow:hidden; }
.page-hero::before{
  content:''; position:absolute; top:-20%; left:50%; width:70vw; height:70vw; transform:translateX(-50%);
  background:radial-gradient(circle, rgba(124,58,237,.3), transparent 65%); filter:blur(40px); z-index:-1;
}
.page-kicker{ color:transparent; background:var(--grad-text); -webkit-background-clip:text; background-clip:text; font-weight:700; letter-spacing:.18em; text-transform:uppercase; font-size:.78rem; margin-bottom:16px; }
.page-title{ font-size:clamp(2rem,4.6vw,3.3rem); font-weight:800; margin-bottom:16px; }
.page-sub{ max-width:680px; margin:0 auto; color:var(--text-1); }

/* about */
.about-lead{ max-width:820px; margin:0 auto; text-align:center; font-size:1.08rem; color:var(--text-1); }

/* =============================================================== UTIL === */
.mt-0{ margin-top:0 !important; }
.text-center{ text-align:center; }
.grad-text{ background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent; }

/* ============================================================ RESPONSIVE === */
@media (max-width:980px){
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .people-grid.cols-6{ grid-template-columns:repeat(3,1fr); }
  .stats-row{ grid-template-columns:repeat(2,1fr); }
  .footer-top{ flex-direction:column; align-items:flex-start; }
}
@media (max-width:760px){
  .nav-links{
    position:fixed; inset:0 0 0 auto; width:min(320px,82vw); height:100vh; top:0;
    background:rgba(9,5,20,.98); backdrop-filter:blur(20px); flex-direction:column; align-items:flex-start;
    padding:110px 28px 40px; gap:6px; transform:translateX(100%); transition:transform .45s var(--ease);
    border-left:1px solid var(--border);
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-links a{ width:100%; padding:14px 10px; font-size:1rem; }
  .nav-toggle{ display:block; }
  .people-grid.cols-6{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid{ grid-template-columns:1fr 1fr; }
  .stats-row{ grid-template-columns:1fr 1fr; }
  .section{ padding:40px 0; }
  .section-tight{ padding:28px 0; }
  .form-card{ padding:28px; }
  .panel-head{ padding:18px; gap:16px; }
  .panel-thumb{ width:84px; height:84px; border-radius:12px; }
  .panel-body-inner{ padding-left:26px; }
  .recap-banner-media{ height:220px; }
  .recap-banner-body{ padding:28px 26px 32px; }
  .nav-brand .gcbc-logo{ height:32px; }
}
@media (max-width:480px){
  .gallery-grid{ grid-template-columns:1fr; }
  .people-grid.cols-6{ grid-template-columns:1fr 1fr; }
  .panel-head{ flex-direction:column; align-items:stretch; position:relative; padding:16px; padding-right:64px; }
  .panel-thumb{ width:100%; height:160px; border-radius:12px; }
  .panel-chevron{ position:absolute; top:16px; right:16px; }
  .panel-body-inner{ padding-left:16px; padding-right:16px; }
  .countdown{ flex-wrap:nowrap; gap:5px; }
  .countdown-digits{ gap:2px; }
  .flip-card{ width:24px; height:34px; border-radius:7px; }
  .flip-card span{ font-size:1rem; }
  .countdown-colon{ font-size:1rem; margin-top:-14px; }
  .countdown-label{ font-size:.56rem; letter-spacing:.08em; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}