:root{
  color-scheme:light;
  --bg:#FFFFFF; --ink:#23222A; --heading:#1B1A22; --muted:#6A6873; --line:#ECEAF0; --soft:#F4F3F6;
  --accent:#6A3F9C; --accent-ink:#FFFFFF; --danger:#B3261E;
  --st-received:#5E5C66; --st-reviewing:#1F5FA8; --st-in_progress:#9A6A00; --st-resolved:#2E7D32; --st-rejected:#B3261E;
  --shadow:0 1px 2px rgba(20,18,28,.06),0 12px 32px rgba(20,18,28,.12);
  --f-head:"Abel","Kanit","Helvetica Neue",Arial,sans-serif;
  --f-thai:"Kanit","Abel",system-ui,sans-serif;
  --f-body:"Sarabun","Kanit",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
img{max-width:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--f-thai);color:var(--heading);line-height:1.4;text-wrap:balance}

/* header */
.site-head{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:5}
.head-in{padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px 28px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--heading);min-width:0}
.logo{width:56px;height:56px;flex:none;border-radius:50%;display:grid;place-items:center;background:#111;color:#fff;font-family:var(--f-head);font-size:1rem;letter-spacing:.04em;box-shadow:inset 0 0 0 3px #fff,0 0 0 2px #111}
.logo-img{width:64px;height:auto;flex:none}
.brand-t{font-family:var(--f-thai);font-weight:600;font-size:1.05rem;line-height:1.35;max-width:46ch}
@media (max-width:600px){ .logo-img{width:48px} .brand-t{font-size:.92rem} }
.brand-t small{display:block;font-weight:300;font-size:.8rem;color:var(--muted)}
nav.menu{display:flex;gap:4px 22px;flex-wrap:wrap;align-items:center}
nav.menu a{font-family:var(--f-thai);font-weight:400;color:var(--ink);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
nav.menu a:hover,nav.menu a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent)}

.page{max-width:980px;margin:0 auto;padding:28px 24px 80px}
.lead{max-width:62ch;color:var(--muted);font-size:1.02rem}
.hero{padding:24px 0 8px}
.hero h1{font-size:clamp(1.7rem,3.6vw,2.4rem);margin:0 0 8px}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 6px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:22px 0 4px}
.stat{border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-family:var(--f-head);font-size:1.7rem;font-weight:400;color:var(--heading);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{font-family:var(--f-thai);font-weight:300;font-size:.85rem;color:var(--muted)}

/* buttons + forms */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--bg);border-radius:8px;padding:8px 16px;font-family:var(--f-thai);font-weight:400;font-size:.95rem;cursor:pointer;line-height:1.4;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.1);color:var(--accent-ink)}
.btn.small{padding:4px 10px;font-size:.85rem}
.btn.danger{color:var(--danger)}
.btn.danger.armed{background:var(--danger);border-color:var(--danger);color:#fff}
.btn[disabled]{opacity:.5;cursor:default}
.form{display:grid;gap:14px;max-width:680px}
.f{display:grid;gap:4px}
.f label,.f .lbl{font-family:var(--f-thai);font-size:.9rem;color:var(--heading)}
.f .req{color:var(--danger)}
.f input,.f select,.f textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--soft);padding:9px 11px;font-size:.97rem;line-height:1.5}
.f textarea{resize:vertical}
.hint{font-size:.82rem;color:var(--muted)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:600px){ .row2{grid-template-columns:1fr} }
.check{display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.check input{margin-top:5px}
.notice{border-left:3px solid var(--accent);background:var(--soft);padding:12px 14px;border-radius:0 8px 8px 0;font-size:.9rem}
.err{color:var(--danger);font-size:.92rem;min-height:1.2em}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.thumbs{display:flex;gap:8px;flex-wrap:wrap}
.thumbs figure{margin:0;position:relative;width:96px;height:72px;border-radius:8px;overflow:hidden;background:var(--soft)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.thumbs button{position:absolute;top:2px;right:2px;border:0;border-radius:50%;width:22px;height:22px;background:rgba(0,0,0,.6);color:#fff;cursor:pointer;line-height:1}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px}
.gallery a{display:block;border-radius:8px;overflow:hidden;background:var(--soft);aspect-ratio:4/3}
.gallery img{width:100%;height:100%;object-fit:cover}

/* status chips + stepper */
.chip{display:inline-flex;align-items:center;gap:6px;font-family:var(--f-thai);font-size:.8rem;font-weight:400;padding:2px 10px;border-radius:999px;border:1px solid currentColor;white-space:nowrap}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.chip.received{color:var(--st-received)} .chip.reviewing{color:var(--st-reviewing)} .chip.in_progress{color:var(--st-in_progress)}
.chip.resolved{color:var(--st-resolved)} .chip.rejected{color:var(--st-rejected)}
.tag{font-family:var(--f-thai);font-weight:300;font-size:.8rem;color:var(--muted)}
.steps{display:flex;gap:0;margin:14px 0 6px;list-style:none;padding:0;flex-wrap:wrap}
.steps li{flex:1 1 0;min-width:96px;text-align:center;font-family:var(--f-thai);font-size:.8rem;color:var(--muted);position:relative;padding-top:22px}
.steps li::before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:12px;height:12px;border-radius:50%;background:var(--line);z-index:1}
.steps li::after{content:"";position:absolute;top:11px;left:-50%;width:100%;height:2px;background:var(--line)}
.steps li:first-child::after{display:none}
.steps li.done{color:var(--heading)} .steps li.done::before,.steps li.done::after{background:var(--accent)}
.steps li.bad{color:var(--st-rejected)} .steps li.bad::before{background:var(--st-rejected)}

/* code box */
.codebox{border:2px dashed var(--accent);border-radius:12px;padding:18px;text-align:center;margin:12px 0}
.codebox .code{font-family:ui-monospace,Menlo,monospace;font-size:clamp(1.4rem,5vw,2rem);letter-spacing:.08em;color:var(--heading);user-select:all;font-weight:600}

/* case cards + detail */
.cases{display:grid;gap:12px}
.case{all:unset;cursor:pointer;display:grid;gap:6px;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.case:hover{border-color:var(--accent)}
.case:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.case h3{margin:0;font-size:1.05rem;font-weight:600}
.case p{margin:0;color:var(--muted);font-size:.93rem}
.meta{display:flex;gap:8px 14px;flex-wrap:wrap;align-items:center}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:6px 0 16px}
.filters select,.filters input{border:1px solid var(--line);border-radius:8px;background:var(--soft);padding:7px 10px;font-size:.92rem}
.detail h2{margin:6px 0 4px;font-size:1.45rem}
.body-text{white-space:pre-line;max-width:72ch}
.box{border:1px solid var(--line);border-radius:12px;padding:16px;margin:16px 0}
.box h3{margin:0 0 8px;font-size:1.02rem}
.response{border-left:3px solid var(--st-resolved);background:#F3F8F3;padding:12px 14px;border-radius:0 8px 8px 0;white-space:pre-line}

/* timeline + thread */
.timeline{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.timeline li{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start}
.timeline time{font-size:.8rem;color:var(--muted);display:block}
.timeline .note{white-space:pre-line;font-size:.93rem;margin-top:2px}
.thread{display:grid;gap:10px;margin:8px 0 12px}
.msg{max-width:85%;padding:10px 12px;border-radius:12px;white-space:pre-line;font-size:.95rem}
.msg.user{background:var(--soft);justify-self:start;border-top-left-radius:2px}
.msg.admin{background:#EFE8F6;justify-self:end;border-top-right-radius:2px}
.msg small{display:block;font-size:.75rem;color:var(--muted);margin-bottom:2px;font-family:var(--f-thai)}

.empty{color:var(--muted);text-align:center;padding:24px 0;font-family:var(--f-thai);font-weight:300}
footer{border-top:1px solid var(--line);padding:20px 24px;text-align:center;font-family:var(--f-thai);font-weight:300;font-size:.85rem;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--heading);color:#fff;padding:10px 16px;border-radius:8px;font-family:var(--f-thai);font-size:.92rem;z-index:40;max-width:calc(100% - 32px)}

/* admin layout */
.admin-grid{display:grid;grid-template-columns:minmax(260px,360px) 1fr;gap:20px;align-items:start}
@media (max-width:860px){ .admin-grid{grid-template-columns:1fr} }
.alist{display:grid;gap:8px;max-height:calc(100vh - 220px);overflow:auto;padding-right:4px}
.aitem{all:unset;cursor:pointer;display:grid;gap:4px;border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.aitem[aria-current="true"]{border-color:var(--accent);background:#FAF7FD}
.aitem b{font-family:var(--f-thai);font-weight:400;font-size:.95rem;line-height:1.4}
.badge{background:var(--danger);color:#fff;border-radius:999px;font-size:.72rem;padding:0 7px;font-family:var(--f-thai)}
.pubflag{font-size:.75rem;font-family:var(--f-thai);color:var(--st-resolved)}
.kv{display:grid;grid-template-columns:110px 1fr;gap:4px 12px;font-size:.93rem}
.kv dt{color:var(--muted)} .kv dd{margin:0;user-select:all;overflow-wrap:anywhere}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
@media (prefers-reduced-motion:reduce){ *{transition:none!important} }

/* closed-community additions */
.page h1{font-size:clamp(1.45rem,3vw,1.9rem);margin:8px 0 12px}
.form.narrow{max-width:440px}
.block{padding:28px 0;border-top:1px solid var(--line)}
.block:first-of-type{border-top:0}
.block h2{font-size:1.35rem;margin:0 0 10px}
.block.with-img{display:grid;grid-template-columns:1fr minmax(200px,38%);gap:24px;align-items:start}
.bimg{width:100%;border-radius:12px;object-fit:cover}
@media (max-width:700px){ .block.with-img{grid-template-columns:1fr} }
.people{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:20px}
.person{display:grid;gap:6px;justify-items:center;text-align:center;font-family:var(--f-thai)}
.person b{font-weight:600;font-size:.95rem;line-height:1.4}
.person span{font-weight:300;font-size:.82rem;color:var(--muted)}
.pphoto{width:100%;max-width:150px;aspect-ratio:4/5;border-radius:12px;overflow:hidden;background:var(--soft);display:grid;place-items:center;font-size:2rem;color:#B9B6C2}
.pphoto img{width:100%;height:100%;object-fit:cover}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap}
.tabs button{all:unset;cursor:pointer;font-family:var(--f-thai);padding:8px 14px;border-bottom:2px solid transparent;color:var(--muted)}
.tabs button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent)}
.tabs button:focus-visible{outline:2px solid var(--accent)}
table.grid{width:100%;border-collapse:collapse;font-size:.92rem}
table.grid th,table.grid td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
table.grid th{font-family:var(--f-thai);font-weight:400;color:var(--muted);font-size:.85rem}
.tablewrap{overflow-x:auto}
.ok-code{color:var(--st-resolved)} .bad-code{color:var(--danger)}
.pedit{display:grid;grid-template-columns:72px 1fr 1fr auto;gap:8px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:8px}
.pedit .thumb{width:72px;height:90px;border-radius:8px;overflow:hidden;background:var(--soft);display:grid;place-items:center;cursor:pointer;font-size:.75rem;color:var(--muted);text-align:center}
.pedit .thumb img{width:100%;height:100%;object-fit:cover}
.pedit input{border:1px solid var(--line);border-radius:8px;background:var(--soft);padding:7px 9px;width:100%}
@media (max-width:640px){ .pedit{grid-template-columns:72px 1fr} }

/* ===== discussion board (Facebook-like) ===== */
.board{max-width:680px;margin:0 auto}
.card{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:0 0 14px;box-shadow:0 1px 2px rgba(20,18,28,.04)}
.av{display:inline-grid;place-items:center;border-radius:50%;flex:none;font-family:var(--f-thai);font-weight:600;font-size:.95rem;background:var(--soft);color:var(--muted)}
.av.anon{background:#3A3843;color:#fff}
.composer .crow{display:flex;gap:10px;align-items:flex-start}
.composer textarea{flex:1;border:0;background:var(--soft);border-radius:20px;padding:10px 16px;font-size:1rem;resize:none;min-height:44px;line-height:1.5}
.composer .thumbs{margin:10px 0 0 50px}
.cbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}
.cbar .btn.primary{margin-left:auto}
.ghost-btn{border-color:transparent;background:var(--soft)}
.anon-t{font-size:.9rem}
.composer .hint{margin:6px 0 0}
.phead{display:flex;gap:10px;align-items:center}
.pwho{display:grid;line-height:1.35;min-width:0;flex:1}
.pwho b{font-family:var(--f-thai);font-weight:600;font-size:.98rem}
.pmeta{font-size:.8rem;color:var(--muted)}
.you{font-weight:300;font-size:.8rem;color:var(--muted)}
.edited{text-decoration:underline dotted;cursor:help}
.menu-wrap{position:relative}
.dots{all:unset;cursor:pointer;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-size:1.3rem;color:var(--muted)}
.dots:hover,.dots:focus-visible{background:var(--soft)}
.pmenu{position:absolute;right:0;top:36px;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);min-width:200px;z-index:6;padding:6px;display:grid}
.pmenu button{all:unset;cursor:pointer;padding:8px 10px;border-radius:6px;font-family:var(--f-thai);font-size:.92rem}
.pmenu button:hover,.pmenu button:focus-visible{background:var(--soft)}
.pbody{margin:10px 0 6px}
.ptext{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:1rem}
.pimgs{display:grid;gap:4px;margin:8px -16px;overflow:hidden}
.pimgs.n1{grid-template-columns:1fr} .pimgs.n2{grid-template-columns:1fr 1fr} .pimgs.n3,.pimgs.n4{grid-template-columns:1fr 1fr}
.pimgs a{display:block;background:var(--soft)} .pimgs.n1 img{max-height:520px}
.pimgs img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:auto}
.pimgs.n2 img,.pimgs.n3 img,.pimgs.n4 img{aspect-ratio:1/1}
.pimgs.n3 a:first-child{grid-column:1/-1} .pimgs.n3 a:first-child img{aspect-ratio:2/1}
.psum{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.88rem;color:var(--muted);padding:6px 0;min-height:30px}
.ricons{letter-spacing:-2px;margin-right:4px}
.rdetail{font-size:.78rem;color:var(--muted);margin:-4px 0 6px}
.linkbtn{all:unset;cursor:pointer;color:var(--muted);font-size:.85rem}
.linkbtn:hover,.linkbtn:focus-visible{text-decoration:underline}
.linkbtn.strong{font-family:var(--f-thai);font-weight:400;color:var(--ink);font-size:.92rem;padding:6px 10px;border-radius:8px}
.linkbtn.strong:hover{background:var(--soft);text-decoration:none}
.ractions{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:4px 0}
@media (max-width:640px){ .ractions{grid-template-columns:1fr 1fr} }
.rbtn{all:unset;cursor:pointer;text-align:center;padding:7px 4px;border-radius:8px;font-family:var(--f-thai);font-size:.84rem;color:var(--muted);line-height:1.3}
.rbtn:hover,.rbtn:focus-visible{background:var(--soft)}
.rbtn.on{font-weight:600}
.rbtn.on.agree{color:#1F5FA8;background:#EAF1FB} .rbtn.on.neutral{color:#5E5C66;background:var(--soft)}
.rbtn.on.improve{color:#9A6A00;background:#FBF4E4} .rbtn.on.disagree{color:#B3261E;background:#FCEDEC}
.cbtnrow{display:flex;justify-content:center;padding:2px 0}
.comments{border-top:1px solid var(--line);padding-top:10px;margin-top:4px;display:grid;gap:8px}
.cthread{display:grid;gap:6px}
.cm{display:flex;gap:8px;align-items:flex-start}
.cmain{min-width:0;flex:1}
.bubble{display:inline-block;background:var(--soft);border-radius:16px;padding:7px 12px;max-width:100%}
.bubble b{font-family:var(--f-thai);font-weight:600;font-size:.86rem}
.ctext{white-space:pre-wrap;overflow-wrap:anywhere;font-size:.94rem}
.opb{font-size:.7rem;background:var(--accent);color:#fff;border-radius:4px;padding:0 5px;font-family:var(--f-thai);vertical-align:1px}
.cmeta{font-size:.78rem;color:var(--muted);padding:2px 12px}
.cmeta .linkbtn{font-size:.78rem;font-weight:600}
.replies{margin-left:40px;display:grid;gap:6px}
.cform{display:flex;gap:8px;align-items:flex-start;margin-top:4px}
.cinput{flex:1;background:var(--soft);border-radius:16px;padding:6px 10px}
.cinput textarea{width:100%;border:0;background:transparent;resize:none;font-size:.94rem;line-height:1.5;padding:2px}
.cinput textarea:focus{outline:none}
.cinput:focus-within{outline:2px solid var(--accent)}
.cfoot{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.82rem}
.editbox{width:100%;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:var(--bg);font-size:.95rem;margin-bottom:6px}

.armed-txt{color:var(--danger)!important;font-weight:600}
.pmenu button.armed-txt{background:#FCEDEC}