:root{
  --bg:#F7F9FA;
  --bg-panel:#EFF3F5;
  --bg-panel-2:#E7EEF1;
  --ink:#1B2840;
  --ink-soft:#4C5866;
  --ink-faint:#7C8894;
  --line:#D9E1E6;
  --line-strong:#B9C5CC;
  --primary:#3C9484;
  --primary-dark:#1B2840;
  --primary-tint:#DFF1EC;
  --teal:#83CEBC;
  --teal-dark:#3C9484;
  --accent:#C67A3D;
  --accent-tint:#F3E2CE;
  --sustain:#4C8768;
  --sustain-tint:#DCEEE3;
  --white:#FFFFFF;
  --radius-sm:2px;
  --radius-md:4px;
  --font-display:'Open Sans', sans-serif;
  --font-body:'Open Sans', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth; scroll-padding-top:78px;}

body{
  font-family: "Poppins", Sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:15px;
}

h1,h2,h3,h4,.display-font{
  font-family: "Poppins", Sans-serif;
  color:var(--ink);
  letter-spacing:-0.01em;
}

.mono{font-family: "Poppins", Sans-serif;}

p{
  color:var(--ink-soft); 
  /* max-width:64ch; */
}

a{color:var(--primary); text-decoration:none;}
a:hover{color:var(--primary-dark);}

.container-narrow{max-width:1120px; margin:0 auto; padding-left:1.5rem; padding-right:1.5rem;}

section{padding:5.5rem 0;}
@media (max-width:768px){ section{padding:3.25rem 0;} }

.section-line{
  border:none;
  border-top:1px solid var(--line);
  margin:0;
}

.section-head{
  display:flex;
  align-items:baseline;
  gap:1rem;
  margin-bottom:2.5rem;
  border-bottom:1px solid var(--line);
  padding-bottom:1.1rem;
}
.section-head .num{
  font-family: "Poppins", Sans-serif;
  color:var(--primary);
  font-size:0.85rem;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  padding:0.15rem 0.5rem;
  white-space:nowrap;
}
.section-head h2{
  font-size:clamp(1.5rem, 2.4vw, 2.05rem);
  margin:0;
  font-weight:600;
}
.section-kicker{
  color:var(--ink-faint);
  font-size:0.98rem;
  margin-top:0.35rem;
}

/* ===== NAV ===== */
.navbar-custom{
  background:rgba(255,255,255,0.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  padding:0.7rem 0;
}
.navbar-custom .brand{
  display:flex;
  align-items:center;
  gap:0.7rem;
}
.navbar-custom .brand .mark{
  width:42px;height:42px;
  border-radius:50%;
  border:1.5px solid var(--ink);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  font-family: "Poppins", Sans-serif;
  font-weight:700;
  font-size:0.85rem;
  color:var(--ink);
  letter-spacing:0.01em;
}
.navbar-custom .brand .wordmark{line-height:1.2;}
.navbar-custom .brand .wordmark .line1{
  font-family: "Poppins", Sans-serif;
  font-weight:700;
  font-size:1.02rem;
  color:var(--ink);
  letter-spacing:0.01em;
}
.navbar-custom .brand .wordmark .line2{
  font-size:0.68rem;
  color:var(--ink-soft);
  letter-spacing:0.02em;
}

.navbar-custom .nav-link{
  color:var(--ink) !important;
  font-size:0.93rem;
  font-weight:600;
  padding:0.4rem 0.7rem !important;
  position:relative;
  transition:color .15s ease;
}
.navbar-custom .nav-link:hover{color:var(--teal-dark) !important;}
.navbar-custom .nav-link.active{color:var(--ink) !important;}
.navbar-custom .nav-link.active::after{
  content:"";
  position:absolute;
  left:0.7rem; right:0.7rem; bottom:-2px;
  height:2px;
  background:var(--teal);
}

.btn-nav-cta{
  background:var(--ink);
  color:var(--white) !important;
  font-weight:600;
  border-radius:var(--radius-md);
  padding:0.5rem 1.1rem !important;
}
.btn-nav-cta:hover{background:var(--teal-dark); color:var(--white) !important;}

/* ===== HERO ===== */
.hero{
  position:relative;
  padding:5rem 0rem 0rem 0rem;
  overflow:hidden;
  background:var(--ink);
  text-align:center;
}
.hero-illustration{
  position:absolute; inset:0;
  display:flex; align-items:flex-end; justify-content:center;
  opacity:0.5;
}
.hero-illustration svg{width:100%; height:auto; max-width:1400px;}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(27,40,64,0.55) 0%, rgba(27,40,64,0.88) 70%, var(--ink) 100%);
}
.hero-inner{position:relative; z-index:1; display:flex; flex-direction:column; align-items:center;}
.hero .eyebrow-line{
  font-size:clamp(1rem, 1.6vw, 1.3rem);
  font-weight:600;
  color:var(--white);
  /* max-width:34ch; */
  margin-bottom:0.6rem;
}
.hero h1{
  font-size:clamp(2.4rem, 6vw, 4.2rem);
  font-weight:800;
  line-height:1.05;
  color:var(--teal);
  margin:0.5rem 0 1.1rem;
}
.hero .theme-line{
  font-size:clamp(1.05rem, 1.7vw, 1.3rem);
  color:var(--white);
  font-style:italic;
  font-weight:400;
  max-width:34ch;
  margin-bottom:0.3rem;
}
.hero .mode-line{
  font-size:0.95rem;
  font-weight:600;
  color:var(--teal);
  margin-bottom:1.8rem;
}
.hero .organized-by{
  font-size:1.15rem;
  font-weight:700;
  color:var(--white);
  margin-bottom:0.5rem;
}
.hero .org-lines{
  font-size:0.98rem;
  color:#C7D0DA;
  margin-bottom:2.4rem;
  line-height:1.55;
}
.hero .lede{display:none;}

.hero-meta{
  display:flex; flex-wrap:wrap; gap:0;
  justify-content:center;
  border:1px solid rgba(255,255,255,0.18);
  border-radius:var(--radius-md);
  background:rgba(255,255,255,0.06);
  overflow:hidden;
  margin-bottom:2.2rem;
}
.hero-meta .cell{
  padding:0.9rem 1.5rem;
  border-right:1px solid rgba(255,255,255,0.14);
  flex:1 1 160px;
}
.hero-meta .cell:last-child{border-right:none;}
.hero-meta .cell .label{
  font-size:0.7rem;
  color:#9FACB9;
  text-transform:uppercase;
  letter-spacing:0.04em;
  margin-bottom:0.3rem;
}
.hero-meta .cell .value{font-weight:600; color:var(--white); font-size:0.96rem;}

.hero-cta{display:flex; gap:0.9rem; flex-wrap:wrap; justify-content:center;}

.btn-primary-solid{
  background:var(--teal);
  border:1px solid var(--teal);
  color:var(--ink);
  font-weight:700;
  padding:0.75rem 1.5rem;
  border-radius:var(--radius-md);
  transition:background .15s ease, transform .1s ease;
}
.btn-primary-solid:hover{background:#6DBFAA; color:var(--ink); border-color:#6DBFAA;}

.btn-outline-ink{
  background:transparent;
  border:1px solid rgba(255,255,255,0.4);
  color:var(--white);
  font-weight:600;
  padding:0.75rem 1.5rem;
  border-radius:var(--radius-md);
  transition:border-color .15s ease, background .15s ease;
}
.btn-outline-ink:hover{border-color:var(--white); background:rgba(255,255,255,0.08); color:var(--white);}

/* Countdown */
.countdown-wrap{
  display:flex; gap:0.7rem; flex-wrap:wrap; margin-top:0.4rem;
  justify-content:center;
}
.countdown-wrap .unit{
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:var(--radius-md);
  padding:0.7rem 0.9rem;
  min-width:76px;
  text-align:center;
}
.countdown-wrap .unit .num{
  font-family: "Poppins", Sans-serif;
  font-size:1.5rem;
  font-weight:600;
  color:var(--teal);
  line-height:1;
}
.countdown-wrap .unit .lbl{
  font-size:0.68rem;
  color:#9FACB9;
  text-transform:uppercase;
  letter-spacing:0.05em;
  margin-top:0.3rem;
}

/* ===== ABOUT ===== */
.about-focus-list{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:0.55rem 1.5rem;
  margin-top:1.8rem;
}
@media (max-width:576px){ .about-focus-list{grid-template-columns:1fr;} }
.about-focus-list li{
  display:flex; align-items:flex-start; gap:0.55rem;
  font-size:0.95rem; color:var(--ink-soft);
  list-style:none;
}
.about-focus-list li::before{
  content:"";
  width:5px; height:5px;
  background:var(--primary);
  margin-top:0.6rem;
  flex-shrink:0;
}
.about-thesis{
  background:var(--bg-panel);
  border-left:3px solid var(--accent);
  padding:1.3rem 1.5rem;
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  font-family: "Poppins", Sans-serif;
  font-size:15px;
  color:var(--primary-dark);
  margin-top:2rem;
}

/* ===== VISION PILLARS ===== */
.pillar-row{
  display:flex;
  flex-wrap:wrap;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
  background:var(--white);
}
.pillar{
  flex:1 1 180px;
  padding:1.6rem 1.3rem;
  border-right:1px solid var(--line);
  position:relative;
}
.pillar:last-child{border-right:none;}
.pillar .p-index{font-family: "Poppins", Sans-serif; font-size:0.72rem; color:var(--ink-faint);}
.pillar .p-title{font-family: "Poppins", Sans-serif; font-weight:600; font-size:1rem; margin-top:0.5rem; color:var(--ink);}
.pillar:nth-child(odd){background:var(--bg-panel);}

/* ===== OBJECTIVES ===== */
.obj-list{list-style:none; padding:0; margin:0; counter-reset:obj;}
.obj-list li{
  counter-increment:obj;
  display:flex; gap:1.1rem;
  padding:1rem 0;
  border-bottom:1px solid var(--line);
}
.obj-list li:first-child{border-top:1px solid var(--line);}
.obj-list li::before{
  content:counter(obj, decimal-leading-zero);
  font-family: "Poppins", Sans-serif;
  color:var(--accent);
  font-size:0.85rem;
  flex-shrink:0;
  padding-top:0.15rem;
}
.obj-list li span{color:var(--ink-soft); font-size:0.98rem;}

/* ===== TRACKS ===== */
.accordion-item{
  border:1px solid var(--line) !important;
  border-radius:var(--radius-md) !important;
  margin-bottom:0.7rem;
  overflow:hidden;
  background:var(--white);
}
.accordion-button{
font-family: "Poppins", Sans-serif;
  font-weight:600;
  color:var(--ink) !important;
  background:var(--white) !important;
  box-shadow:none !important;
  padding:1.1rem 1.3rem;
}
.accordion-button:not(.collapsed){
  color:var(--primary-dark) !important;
  background:var(--primary-tint) !important;
}
.accordion-button::after{
  filter: invert(38%) sepia(15%) saturate(900%) hue-rotate(155deg);
}
.track-num{
  font-family: "Poppins", Sans-serif;
  font-size:0.78rem;
  color:var(--accent);
  border:1px solid var(--accent-tint);
  background:var(--accent-tint);
  border-radius:var(--radius-sm);
  padding:0.12rem 0.5rem;
  margin-right:0.85rem;
  flex-shrink:0;
}
.track-sub{
  display:block;
  font-family: "Poppins", Sans-serif;
  font-weight:400;
  font-size:0.85rem;
  color:var(--ink-faint);
  margin-top:0.15rem;
}
.accordion-body{
  padding:0.3rem 1.3rem 1.3rem 3.15rem;
  font-size:0.93rem;
  color:var(--ink-soft);
  border-top:1px solid var(--line);
}
.accordion-body .topic-tag{
  display:inline-block;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:0.28rem 0.65rem;
  font-size:0.83rem;
  margin:0.2rem 0.35rem 0.2rem 0;
  color:var(--ink-soft);
}

/* ===== SPECIAL FOCUS ===== */
.focus-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.focus-card{
  background:var(--white);
  padding:1.5rem 1.4rem;
}
.focus-card .fx{
  font-family: "Poppins", Sans-serif;
  font-size:0.85rem;
  color:var(--primary);
  margin-bottom:0.5rem;
}
.focus-card h4{font-size:1.02rem; font-weight:600; margin-bottom:0.5rem;}
.focus-card p{font-size:0.9rem; margin:0;}

/* ===== ACTIVITIES / SESSIONS ===== */
.activity-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:1.5rem;
  height:100%;
}
.activity-card i{color:var(--primary); font-size:1.4rem;}
.activity-card h4{font-size:1rem; font-weight:600; margin:0.7rem 0 0.4rem;}
.activity-card p{font-size:0.9rem; margin:0;}

/* ===== WHO SHOULD ATTEND ===== */
.attend-chip-wrap{display:flex; flex-wrap:wrap; gap:0.55rem;}
.attend-chip{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:20px;
  padding:0.45rem 1rem;
  font-size:0.88rem;
  color:var(--ink-soft);
}

/* ===== TIMELINE / DATES ===== */
.timeline{position:relative; padding-left:2rem;}
.timeline::before{
  content:"";
  position:absolute; left:5px; top:6px; bottom:6px;
  width:1px;
  background:var(--line-strong);
}
.tl-item{position:relative; padding-bottom:1.7rem;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute; left:-2rem; top:4px;
  width:11px; height:11px;
  border-radius:50%;
  background:var(--white);
  border:2px solid var(--primary);
}
.tl-item.is-final::before{background:var(--accent); border-color:var(--accent);}
.tl-item .tl-date{font-family: "Poppins", Sans-serif; color:var(--primary-dark); font-size:0.85rem; font-weight:600;}
.tl-item .tl-label{font-size:0.98rem; color:var(--ink); font-weight:500;}

/* ===== FEES ===== */
.fee-table{width:100%; border-collapse:collapse; background:var(--white); border:1px solid var(--line); border-radius:var(--radius-md); overflow:hidden;}
.fee-table th{
  font-family: "Poppins", Sans-serif;
  font-weight:500;
  font-size:0.78rem;
  text-transform:uppercase;
  letter-spacing:0.04em;
  color:var(--ink-faint);
  text-align:left;
  padding:0.9rem 1.2rem;
  border-bottom:1px solid var(--line);
  background:var(--bg-panel);
}
.fee-table td{
  padding:0.85rem 1.2rem;
  border-bottom:1px solid var(--line);
  font-size:0.95rem;
  color:var(--ink-soft);
}
.fee-table tr:last-child td{border-bottom:none;}
.fee-table td.amt{font-family: "Poppins", Sans-serif; color:var(--ink); font-weight:600; text-align:right;}
.fee-table tr.intl td.amt{color:var(--primary-dark);}
.fee-table tr.indian td.amt{color:var(--accent);}
.fee-note{font-size:0.85rem; color:var(--ink-faint); margin-top:0.9rem;}

/* ===== SPONSORSHIP ===== */
.sponsor-tier{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--white);
  padding:1.6rem;
  height:100%;
  display:flex; flex-direction:column;
}
.sponsor-tier .tier-name{font-family: "Poppins", Sans-serif; font-weight:700; font-size:1.1rem;}
.sponsor-tier .tier-amt{font-family: "Poppins", Sans-serif; font-size:0.85rem; color:var(--ink-faint); margin-bottom:1rem;}
.sponsor-tier ul{list-style:none; padding:0; margin:0 0 0; flex-grow:1;}
.sponsor-tier ul li{
  font-size:0.87rem; color:var(--ink-soft);
  padding:0.4rem 0;
  border-top:1px solid var(--line);
  display:flex; gap:0.5rem;
}
.sponsor-tier ul li::before{content:"—"; color:var(--ink-faint); flex-shrink:0;}
.sponsor-tier.tier-platinum{border-top:3px solid var(--primary);}
.sponsor-tier.tier-gold{border-top:3px solid var(--accent);}
.sponsor-tier.tier-silver{border-top:3px solid var(--line-strong);}
.sponsor-tier.tier-bronze{border-top:3px solid var(--sustain);}

/* ===== COMMITTEE ===== */
.committee-block{margin-bottom:2.2rem;}
.committee-block h4{
  font-family: "Poppins", Sans-serif;
  font-size:15px;
  text-transform:uppercase;
  letter-spacing:0.05em;
  color:#b61818;
  border-bottom:1px solid var(--line);
  padding-bottom:0.6rem;
  margin-bottom:1rem;
  /* font-weight: 600; */
}
.committee-people{display:grid; grid-template-columns:repeat(auto-fill, minmax(230px, 1fr)); gap:0.8rem 1.5rem;}
.person{font-size:0.92rem;}
.person .p-name{color:#006699; font-weight:600;}
.person .p-role{color:var(--ink-faint); font-size:0.83rem; display:block;}

/* ===== PUBLICATION NOTE ===== */
.note-box{
  background:var(--sustain-tint);
  border:1px solid var(--sustain);
  border-radius:var(--radius-md);
  padding:1.2rem 1.4rem;
  font-size:0.9rem;
  color:var(--ink-soft);
}
.note-box strong{color:var(--ink);}

/* ===== CTA BAND ===== */
.cta-band{
  background:var(--ink);
  color:var(--white);
  padding:4.5rem 0;
  text-align:center;
}
.cta-band h2{color:var(--white); font-size:clamp(1.6rem, 3vw, 2.3rem);}
.cta-band .path-words{
  font-family: "Poppins", Sans-serif;
  color:#9FC2D4;
  font-size:0.95rem;
  margin-bottom:1rem;
}
.cta-band p{color:#B9C4CC; margin:0 auto 2rem;}

/* ===== CONTACT / FOOTER ===== */
.contact-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:2rem;
}
.contact-row{display:flex; gap:0.9rem; align-items:flex-start; padding:0.8rem 0; border-top:1px solid var(--line);}
.contact-row:first-child{border-top:none;}
.contact-row i{color:var(--primary); font-size:1.05rem; margin-top:0.2rem;}
.contact-row .c-label{font-size:0.75rem; color:var(--ink-faint); text-transform:uppercase; letter-spacing:0.04em; font-family: "Poppins", Sans-serif;}
.contact-row .c-value{color:var(--ink); font-weight:500;}

footer{
  background:var(--bg-panel);
  border-top:1px solid var(--line);
  padding:2rem 0;
  font-size:0.85rem;
  color:var(--ink-faint);
}

/* Back to top */
#backToTop{
  position:fixed; right:1.4rem; bottom:1.4rem;
  width:42px; height:42px;
  border-radius:50%;
  background:var(--ink);
  color:var(--white);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden;
  transition:opacity .2s ease, visibility .2s ease;
  z-index:999;
  border:none;
}
#backToTop.show{opacity:1; visibility:visible;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation:none !important; transition:none !important;}
}

.reveal{opacity:0; transform:translateY(14px); transition:opacity .5s ease, transform .5s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

/*--------------------------------------------------------------
# Hero Section
--------------------------------------------------------------*/
#hero {
  width: 100%;
  height: 100vh;
  /* background: url(../img/hero-bg.jpg) top center; */
  background: url(images/ki.png) top center;
  background-size: cover;
  overflow: hidden;
  position: relative;
}

@media (min-width: 1024px) {
  #hero {
    background-attachment: fixed;
  }
}

#hero:before {
  content: "";
  background: rgba(6, 12, 34, 0.8);
  position: absolute;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
}

#hero .hero-container {
  position: absolute;
  bottom: 0;
  left: 0;
  top: 90px;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  padding: 0 15px;
}

@media (max-width: 991px) {
  #hero .hero-container {
    top: 70px;
  }
}