/* ============ TESS — Thai Endocrine Surgeons Society ============ */
:root{
  --navy:#1d3a54; --navy-d:#13293d; --navy-l:#2c527a;
  --teal:#0f8b84; --teal-d:#0a6b66; --teal-l:#e3f4f3;
  --gold:#c9a13b;
  --ink:#22303c; --mut:#5b6b78; --line:#e2e8ee;
  --bg:#f6f8fa; --card:#ffffff;
  --rad:14px; --shadow:0 6px 24px rgba(19,41,61,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Anuphan','Segoe UI',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-d);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:'Trirong','Anuphan',serif;color:var(--navy);line-height:1.35}
h1{font-size:clamp(1.7rem,4vw,2.6rem)}
h2{font-size:clamp(1.4rem,3vw,1.95rem);margin-bottom:.6em}
h3{font-size:1.15rem;margin-bottom:.4em}
p{margin-bottom:1em}
ul,ol{margin:0 0 1em 1.4em}
li{margin-bottom:.4em}
.small{font-size:.86rem;color:var(--mut)}

/* ---------- top bar + nav ---------- */
.topbar{background:var(--navy-d);color:#cfdce8;font-size:.82rem;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center}
.topbar a{color:#cfdce8}
.tbright{display:inline-flex;align-items:center;gap:14px;flex-wrap:wrap}
.langsw{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.28);border-radius:999px;overflow:hidden;line-height:1}
.langsw b,.langsw a{padding:3px 11px;font-size:.78rem;font-weight:700;letter-spacing:.04em}
.langsw b{background:var(--gold);color:var(--navy-d)}
.langsw a{color:#cfdce8}
.langsw a:hover{background:rgba(255,255,255,.14);text-decoration:none}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.navwrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand img{width:74px;flex:none}
.brand .t1{font-weight:700;color:var(--navy);font-size:.94rem;line-height:1.3}
.brand .t2{font-size:.74rem;color:var(--mut);line-height:1.3}
nav.main{display:flex;gap:1px;flex-wrap:nowrap}
nav.main a{padding:8px 9px;border-radius:8px;color:var(--navy);font-weight:600;font-size:.88rem;white-space:nowrap}
nav.main a:hover{background:var(--teal-l);text-decoration:none}
nav.main a.on{background:var(--navy);color:#fff}
#navtoggle{display:none}
.burger{display:none;font-size:1.6rem;color:var(--navy);cursor:pointer;padding:4px 10px;border:1px solid var(--line);border-radius:8px}
@media(max-width:1023px){
  .burger{display:block}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px 16px;flex-direction:column;box-shadow:var(--shadow)}
  #navtoggle:checked ~ nav.main{display:flex}
  nav.main a{padding:11px 12px;border-bottom:1px solid var(--line);border-radius:0;white-space:normal}
}

/* ---------- hero ---------- */
.hero{background:linear-gradient(135deg,var(--navy-d) 0%,var(--navy) 55%,var(--teal-d) 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.05)}
.hero h1{color:#fff}
.hero .sub{color:#cfe6e4;font-size:1.06rem;max-width:760px;margin:14px 0 6px}
.hero .eng{color:#9fc3d8;letter-spacing:.08em;text-transform:uppercase;font-size:.85rem;font-weight:600}
.btnrow{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:700;font-size:.98rem;text-decoration:none}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.btn.p{background:var(--gold);color:var(--navy-d)}
.btn.o{border:2px solid rgba(255,255,255,.7);color:#fff}
.btn.t{background:var(--teal);color:#fff}

/* ---------- sections & cards ---------- */
section{padding:52px 0}
section.alt{background:#fff}
.kicker{color:var(--teal);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem;margin-bottom:6px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:26px;box-shadow:var(--shadow)}
.card h3{display:flex;align-items:center;gap:9px}
.card .ic{width:38px;height:38px;flex:none;border-radius:10px;background:var(--teal-l);display:flex;align-items:center;justify-content:center;font-size:1.15rem}
.stat{background:linear-gradient(160deg,var(--navy),var(--navy-l));color:#fff;border-radius:var(--rad);padding:24px;text-align:center}
.stat b{display:block;font-size:2rem;font-family:'Trirong',serif;color:var(--gold)}
.stat span{font-size:.88rem;color:#d5e2ec}

/* ---------- misc components ---------- */
.badge{display:inline-block;background:var(--teal-l);color:var(--teal-d);font-weight:700;font-size:.78rem;padding:3px 12px;border-radius:999px;margin-bottom:10px}
.figure{background:#fff;border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;box-shadow:var(--shadow)}
.figure img{width:100%}
.figure figcaption{padding:12px 16px;font-size:.86rem;color:var(--mut);border-top:1px solid var(--line)}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--rad);overflow:hidden;box-shadow:var(--shadow);font-size:.95rem}
th{background:var(--navy);color:#fff;text-align:left;padding:12px 14px;font-weight:600}
td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:nth-child(even) td{background:#fafcfd}
.note{background:var(--teal-l);border-left:4px solid var(--teal);border-radius:0 10px 10px 0;padding:16px 20px;margin:18px 0}
.warn{background:#fdf6e8;border-left:4px solid var(--gold);border-radius:0 10px 10px 0;padding:16px 20px;margin:18px 0}
.crumbs{font-size:.83rem;color:var(--mut);padding:14px 0 0}
.crumbs a{color:var(--mut)}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--rad);padding:18px 22px;margin-bottom:26px}
.toc b{color:var(--navy)}
.toc a{display:inline-block;margin:2px 10px 2px 0;font-size:.92rem}

/* FAQ */
details.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
details.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;color:var(--navy);list-style:none;position:relative;padding-right:44px}
details.faq summary::after{content:"+";position:absolute;right:18px;top:12px;font-size:1.4rem;color:var(--teal)}
details.faq[open] summary::after{content:"–"}
details.faq .a{padding:0 20px 16px;color:var(--ink)}

/* committee */
.person{display:flex;gap:10px;align-items:baseline;border-bottom:1px dashed var(--line);padding:7px 2px;font-size:.95rem}
.person b{color:var(--navy);flex:1}
.person span{color:var(--mut);font-size:.85rem;white-space:nowrap}

/* president card */
.pres{display:grid;grid-template-columns:280px 1fr;gap:30px;align-items:start}
.pres .photo{border-radius:var(--rad);overflow:hidden;box-shadow:var(--shadow);background:linear-gradient(160deg,var(--navy),var(--teal));min-height:200px}
@media(max-width:760px){.pres{grid-template-columns:1fr}}
.sig{max-width:180px;margin-top:10px}

/* CTA band */
.band{background:linear-gradient(120deg,var(--teal-d),var(--teal));color:#fff;border-radius:var(--rad);padding:36px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.band h2{color:#fff;margin:0}
.band p{margin:0;color:#dff2f0}

/* footer */
footer.site{background:var(--navy-d);color:#b9c9d6;padding:48px 0 24px;margin-top:40px;font-size:.92rem}
footer.site h4{color:#fff;font-size:1rem;margin-bottom:12px}
footer.site a{color:#b9c9d6}
footer.site a:hover{color:#fff}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}
@media(max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.fgrid{grid-template-columns:1fr}}
.fbot{border-top:1px solid rgba(255,255,255,.12);margin-top:32px;padding-top:18px;font-size:.8rem;color:#8aa0b3;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.flogo{width:120px;margin-bottom:14px;background:#fff;border-radius:10px;padding:8px}