:root{
  --ink:#1c2b1e;
  --paper:#f6f5ef;
  --paper-dim:#eeece2;
  --forest:#20361f;
  --forest-deep:#152417;
  --moss:#4c6b3f;
  --lime:#c7d9a0;
  --soil:#8a5a35;
  --rule:#cdd0bd;
  --serif: 'Fraunces', serif;
  --sans: 'Inter', sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0; background:var(--paper); color:var(--ink); font-family:var(--sans); line-height:1.5; -webkit-font-smoothing:antialiased;}
a{color:inherit;}
img,svg{display:block; max-width:100%;}
.wrap{max-width:1120px; margin:0 auto; padding:0 28px;}
a:focus-visible, button:focus-visible{outline:2px solid var(--soil); outline-offset:3px;}
@media (prefers-reduced-motion: reduce){*{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}}

/* ---------- Nav ---------- */
.nav{position:sticky; top:0; z-index:50; background:rgba(246,245,239,0.94); backdrop-filter:blur(6px); border-bottom:1px solid var(--rule);}
.nav-inner{display:flex; align-items:center; justify-content:space-between; padding:12px 28px; max-width:1120px; margin:0 auto;}
.brand{display:flex; align-items:center; gap:12px; font-family:var(--serif); font-weight:600; font-size:1.05rem; letter-spacing:0.01em; text-decoration:none; color:var(--ink);}
.brand img{width:56px; height:56px; border-radius:50%; object-fit:cover; flex-shrink:0;}
.brand small{display:block; font-family:var(--sans); font-size:0.68rem; color:var(--moss); font-weight:500; margin-top:2px;}
.nav-links{display:flex; gap:26px; list-style:none; margin:0; padding:0; font-size:0.92rem;}
.nav-links a{text-decoration:none; color:var(--ink); padding-bottom:3px; border-bottom:1px solid transparent;}
.nav-links a:hover, .nav-links a.active{border-bottom-color:var(--soil);}
.nav-toggle{display:none; background:none; border:1px solid var(--rule); border-radius:4px; padding:8px 10px; font-size:1rem; cursor:pointer;}
@media (max-width:820px){
  .nav-links{position:absolute; top:100%; left:0; right:0; background:var(--paper); border-bottom:1px solid var(--rule); flex-direction:column; padding:18px 28px; gap:16px; display:none;}
  .nav-links.open{display:flex;}
  .nav-toggle{display:block;}
}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(ellipse at top right, #2a4327 0%, var(--forest) 45%, var(--forest-deep) 100%); color:var(--paper); position:relative; overflow:hidden; padding:56px 0 48px;}
.hero-leaf{position:absolute; right:-90px; top:-60px; width:420px; opacity:0.14;}
.hero-top{display:flex; align-items:center; gap:30px; margin-bottom:24px;}
.hero-logo{width:190px; height:190px; border-radius:50%; object-fit:cover; border:3px solid rgba(246,245,239,0.4); flex-shrink:0;}
.eyebrow-label{font-size:0.82rem; color:var(--lime); font-weight:500; letter-spacing:0.02em; margin-bottom:6px;}
.hero h1{font-family:var(--serif); font-weight:500; font-style:italic; font-size:clamp(1.9rem, 4vw, 2.9rem); line-height:1.1; margin:0; max-width:20ch;}
.hero-meta{display:flex; gap:28px; flex-wrap:wrap; margin:16px 0 0; font-size:1rem;}
.hero-meta div span{display:block; font-size:0.72rem; color:var(--lime); margin-bottom:4px;}
.hero-note{font-size:0.88rem; color:#a9b89e; margin:18px 0 0; padding-top:16px; border-top:1px solid rgba(246,245,239,0.18);}
@media (max-width:600px){
  .hero-top{flex-direction:column; align-items:flex-start; gap:16px;}
  .hero-logo{width:120px; height:120px;}
}

/* ---------- Section shell ---------- */
section{padding:64px 0;}
.section-head{max-width:640px; margin-bottom:40px;}
.section-kicker{color:var(--soil); font-weight:600; font-size:0.85rem; margin-bottom:10px;}
.section-title{font-family:var(--serif); font-size:clamp(1.6rem, 2.8vw, 2.2rem); font-weight:500; margin:0 0 12px;}
.section-desc{color:#4a5a44; font-size:1rem; max-width:56ch;}
hr.rule{border:none; border-top:1px solid var(--rule); margin:0;}

/* ---------- Themes & speakers ---------- */
.session{margin-bottom:56px;}
.session-head{display:flex; justify-content:space-between; align-items:baseline; flex-wrap:wrap; gap:8px 24px; border-bottom:2px solid var(--forest); padding-bottom:12px; margin-bottom:24px;}
.session-head h3{font-family:var(--serif); font-weight:500; font-size:1.4rem; margin:0;}
.session-chair{font-size:0.85rem; color:var(--moss);}
.speaker-grid{display:grid; grid-template-columns:repeat(auto-fill, minmax(280px, 1fr)); gap:26px;}
.speaker-card{display:flex; flex-direction:column; gap:12px;}
.avatar{width:128px; height:128px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-family:var(--serif); font-size:2.3rem; color:var(--paper); flex-shrink:0; overflow:hidden;}
.avatar img{width:100%; height:100%; object-fit:cover;}
.speaker-name{font-family:var(--serif); font-size:1.15rem; line-height:1.3;}
.speaker-aff{font-size:0.83rem; color:#5c6a55;}

/* ---------- Quiet strip ---------- */
.quiet-strip{background:var(--paper-dim); border-top:1px solid var(--rule); border-bottom:1px solid var(--rule);}
.quiet-strip .wrap{padding:20px 28px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; font-size:0.9rem; color:#5c6a55;}

/* ---------- Schedule page ---------- */
.pdf-frame-wrap{border:1px solid var(--rule); background:#fff; border-radius:2px; overflow:hidden; height:80vh; min-height:520px;}
.pdf-frame-wrap iframe{width:100%; height:100%; border:none;}
.pdf-toolbar{display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; flex-wrap:wrap; gap:12px;}
.day-summary{display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:16px; margin-bottom:36px;}
.day-card{border:1px solid var(--rule); padding:18px 20px; border-radius:2px;}
.day-card .day-label{font-size:0.75rem; color:var(--soil); font-weight:600; margin-bottom:6px;}
.day-card .day-date{font-family:var(--serif); font-size:1.1rem; margin-bottom:10px;}
.day-card ul{margin:0; padding-left:18px; font-size:0.85rem; color:#4a5a44;}
.day-card li{margin-bottom:4px;}

/* ---------- Sponsors grid ---------- */
.sponsor-grid{display:grid; grid-template-columns:repeat(auto-fill, minmax(180px, 1fr)); gap:20px; margin-bottom:28px;}
.sponsor-card{border:1px solid var(--rule); border-radius:2px; padding:0; display:flex; flex-direction:column; align-items:center; justify-content:center; background:var(--paper); overflow:hidden; text-decoration:none; color:inherit; transition:border-color 0.15s ease;}
a.sponsor-card:hover{border-color:var(--soil);}
.sponsor-logo{width:100%; height:110px; display:flex; align-items:center; justify-content:center; padding:20px;}
.sponsor-logo img{max-width:100%; max-height:100%; object-fit:contain;}
.sponsor-logo-dark{background:var(--forest);}
.sponsor-text{font-family:var(--serif); font-size:1.1rem; color:var(--ink); text-align:center;}
.sponsor-row-1{grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));}
.sponsor-row-1 .sponsor-logo{height:150px; padding:26px;}
.sponsor-row-2{grid-template-columns:repeat(auto-fill, minmax(170px, 1fr));}
.sponsor-row-2 .sponsor-logo{height:100px; padding:18px;}
.sponsor-row-3{grid-template-columns:repeat(auto-fill, minmax(150px, 1fr)); margin-bottom:56px;}
.sponsor-row-3 .sponsor-logo{height:80px; padding:14px;}


/* ---------- Sponsorship page ---------- */
/* ---------- Organizers / contact ---------- */
.org-grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:32px;}
.org-card{border-top:2px solid var(--forest); padding-top:16px;}
.org-card .role{color:var(--moss); font-size:0.85rem; margin-bottom:4px;}
.org-card .name{font-family:var(--serif); font-size:1.15rem;}
@media (max-width:700px){.org-grid{grid-template-columns:1fr;}}
.contact-block{margin-top:52px; display:grid; grid-template-columns:1fr; gap:40px; font-size:0.95rem; max-width:320px;}
.contact-block h4{font-size:0.8rem; color:var(--soil); margin:0 0 10px; font-weight:600;}
.contact-block p{margin:0 0 6px;}

footer{background:var(--forest-deep); color:#a9b6a1; padding:32px 0; font-size:0.85rem;}
footer .wrap{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;}
footer .foot-brand{display:flex; align-items:center; gap:10px;}
footer .foot-brand img{width:34px; height:34px; border-radius:50%; object-fit:cover;}

.btn{display:inline-block; padding:12px 22px; font-size:0.9rem; font-weight:500; border-radius:2px; text-decoration:none; cursor:pointer; border:1px solid var(--rule); transition:background 0.15s ease, border-color 0.15s ease; background:none; color:var(--ink); font-family:inherit;}
.btn:hover{border-color:var(--soil);}
.btn-dark{background:var(--forest); color:var(--paper); border-color:var(--forest);}
.btn-dark:hover{background:var(--forest-deep);}