/* S-Biz — modern UI, light/dark */
:root{
  --bg:#f5f9fb; --surface:#fff; --surface2:#eaf6f8; --text:#0f2233; --muted:#5b6f80; --line:#dbe8ee;
  --brand:#0e9bb0; --brand-d:#0b7488; --brand-l:#c9f1f6; --accent:#f59e0b; --navy:#0c1a30;
  --ok:#0f9d58; --err:#d93025; --shadow:0 10px 30px -12px rgba(12,40,70,.25); --r:16px;
  --font:'Noto Sans Lao','Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}
[data-theme=dark]{
  --bg:#0b1422; --surface:#13203a; --surface2:#0f1b30; --text:#e6eef7; --muted:#94a8bd; --line:#223552;
  --brand:#22c3d8; --brand-d:#5ad7e8; --brand-l:#10394a; --navy:#070e1a; --shadow:0 10px 30px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
img{max-width:100%;display:block}
a{color:var(--brand-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
.wrap{width:min(1180px,100% - 32px);margin-inline:auto}
.narrow{width:min(860px,100% - 32px)}
.ic{flex:none;vertical-align:-.2em}
.skip{position:absolute;left:-999px;top:8px;background:var(--brand);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none!important}
.brand span{display:flex;flex-direction:column;line-height:1.15}
.brand b{font-size:1.15rem;font-weight:800;letter-spacing:.3px}
.brand small{font-size:.7rem;color:var(--muted);font-weight:500}
.menu{display:flex;gap:2px;margin-left:auto}
.menu a{padding:8px 12px;border-radius:10px;color:var(--text);font-weight:500;font-size:.95rem;white-space:nowrap}
.menu a:hover{background:var(--surface2);text-decoration:none}
.menu a.on{color:var(--brand-d);background:var(--brand-l)}
.tools{display:flex;align-items:center;gap:8px}
.seg{display:flex;background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:3px}
.seg a{padding:3px 12px;border-radius:999px;font-size:.85rem;font-weight:600;color:var(--muted)}
.seg a.on{background:var(--brand);color:#fff}
.seg a:hover{text-decoration:none}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:var(--surface2)}
.i-sun{display:none}[data-theme=dark] .i-sun{display:inline-flex}[data-theme=dark] .i-moon{display:none}
.burger{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;background:var(--brand);color:#fff;border:0;border-radius:12px;padding:11px 22px;font:600 1rem var(--font);cursor:pointer;transition:transform .15s,background .15s,box-shadow .15s;text-decoration:none!important}
.btn:hover{background:var(--brand-d);transform:translateY(-1px);box-shadow:0 8px 20px -8px var(--brand)}
[data-theme=dark] .btn{color:#06222b}
[data-theme=dark] .btn:hover{color:#06222b}
.btn.sm{padding:8px 16px;font-size:.9rem;border-radius:999px}
.btn.lg{padding:14px 28px;font-size:1.05rem}
.btn.ghost{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.45);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.26)}
.btn.ghost-d{background:transparent;border:1.5px solid var(--brand);color:var(--brand-d)}
.btn.ghost-d:hover{background:var(--brand);color:#fff}
.btn.danger{background:var(--err);color:#fff}

/* hero */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,#082f49,#0e7490 55%,#155e75);overflow:hidden;min-height:480px;display:grid}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% 20%,rgba(34,211,238,.35),transparent),radial-gradient(500px 300px at 10% 100%,rgba(245,158,11,.22),transparent);pointer-events:none}
.slide{grid-area:1/1;background-size:cover;background-position:center;display:flex;align-items:center;padding:80px 0;opacity:0;visibility:hidden;transition:opacity .7s,visibility .7s}
.slide.on{opacity:1;visibility:visible}
.slide .wrap{position:relative;max-width:1180px}
.slide h1{font-size:clamp(1.9rem,4.6vw,3.4rem);font-weight:800;max-width:18ch;text-wrap:balance}
.slide p{max-width:56ch;font-size:1.1rem;opacity:.92}
.pill{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);padding:4px 14px;border-radius:999px;font-size:.85rem;margin-bottom:16px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.dots{position:absolute;left:0;right:0;bottom:22px;display:flex;justify-content:center;gap:8px;z-index:3}
.dots button{width:10px;height:10px;border-radius:99px;border:0;background:rgba(255,255,255,.45);cursor:pointer;padding:0;transition:width .3s}
.dots button.on{width:30px;background:#fff}

/* sections */
.sec{padding:72px 0}
.sec.alt{background:var(--surface2)}
.sec-title{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:36px}
.sec-title h2{margin:0;font-size:clamp(1.4rem,3vw,2rem);color:var(--brand-d);font-weight:800}
.sec-title .bar{width:56px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.sec-sub{text-align:center;color:var(--muted);margin:-20px auto 32px;max-width:60ch}
.center{text-align:center;margin-top:32px}.center-t{text-align:center}
.mt{margin-top:56px}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(auto-fit,minmax(280px,370px));justify-content:center}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;transition:transform .25s,box-shadow .25s}
a.card:hover,.card.course:hover,.card.prod:hover,.card.news:hover,.card.svc:hover{transform:translateY(-4px)}
.card h3{font-size:1.08rem;margin-bottom:.4em}
.card h3 a{color:var(--text)}
.card h3 a:hover{color:var(--brand-d);text-decoration:none}
.svc{padding:28px 24px;text-align:center}
.svc p{color:var(--muted);font-size:.95rem;margin:0}
.svc-ic{display:inline-grid;place-items:center;width:64px;height:64px;border-radius:18px;background:var(--brand-l);color:var(--brand-d);margin-bottom:16px}
.svc.wide{display:flex;gap:20px;text-align:left;align-items:flex-start}.svc.wide .svc-ic{margin:0}
.thumb{display:block;position:relative;aspect-ratio:3/2;background:var(--surface2);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.05)}
.body{padding:18px 20px 20px}
.meta{list-style:none;padding:0;margin:12px 0 0;display:grid;gap:8px;color:var(--muted);font-size:.92rem}
.meta li{display:flex;gap:10px;align-items:center}.meta .ic{color:var(--brand)}
.meta b{color:var(--text);font-weight:600}
.price{font-size:1.4rem;font-weight:800;color:var(--brand-d)}
.price.big{font-size:2rem;margin:.2em 0 .5em}
.foot-row{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.85rem;margin-top:10px}
.more{font-weight:600;display:inline-flex;gap:4px;align-items:center}
.muted{color:var(--muted)}.muted-f{color:#9fb3c8;margin:.6em 0 1em}
.tag{position:absolute;left:12px;top:12px;background:var(--accent);color:#1b1200;font-weight:700;font-size:.78rem;padding:2px 12px;border-radius:99px}
.tag.static{position:static;display:inline-block}
.member{text-align:center;padding:28px 20px}
.member img,.avatar{width:110px;height:110px;border-radius:50%;object-fit:cover;margin:0 auto 14px;border:4px solid var(--brand-l)}
.avatar{display:grid;place-items:center;background:var(--brand-l);color:var(--brand-d)}
.soc{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.soc a{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.3);display:grid;place-items:center;color:#fff;font-weight:700;font-size:.85rem;text-decoration:none}
.soc a:hover{background:var(--brand);border-color:var(--brand)}
.soc.sm a{width:32px;height:32px;border-color:var(--line);color:var(--brand-d)}
.empty{text-align:center;color:var(--muted);padding:40px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;text-align:center}
.stats div{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.stats b{display:block;font-size:2.2rem;color:var(--brand-d)}.stats span{color:var(--muted)}

/* inner pages */
.page-hero{background:linear-gradient(135deg,#082f49,#0e7490);color:#fff;padding:64px 0 52px;text-align:center;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(500px 200px at 80% 0,rgba(34,211,238,.3),transparent)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);margin:0 0 8px;font-weight:800}
.crumb{margin:0;opacity:.85;font-size:.92rem}.crumb a{color:#fff}
.detail{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.detail-img{padding:12px}.detail-img img{width:100%;border-radius:12px}
.eyebrow{color:var(--brand-d);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.82rem}
.h-lg{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800}
.prose{color:var(--text);opacity:.9}
.facts{list-style:none;padding:0;margin:20px 0;display:grid;gap:10px}
.facts li{display:flex;gap:12px;align-items:center;padding:10px 14px;background:var(--surface);border:1px solid var(--line);border-radius:12px}
.facts .ic{color:var(--brand)}
.article .cover{width:100%;border-radius:var(--r);margin:16px 0}
.filters{display:flex;gap:8px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}
.filters a,.pager a{padding:7px 18px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--text);font-weight:500}
.filters a.on,.pager a.on{background:var(--brand);border-color:var(--brand);color:#fff}
.filters a:hover,.pager a:hover{text-decoration:none;border-color:var(--brand)}
.pager{display:flex;gap:8px;justify-content:center;margin-top:32px}

/* forms */
.form{padding:28px;display:grid;gap:16px}
.form h2,.form h3{margin:0}
label{display:grid;gap:6px;font-weight:600;font-size:.92rem}
input,textarea,select{font:inherit;color:var(--text);background:var(--bg);border:1.5px solid var(--line);border-radius:12px;padding:11px 14px;width:100%;transition:border-color .2s,box-shadow .2s}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 22%,transparent)}
input[type=checkbox]{width:auto}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hp{position:absolute;left:-9999px;opacity:0;height:0}
.authf{max-width:440px;margin:0 auto}
.alert{padding:12px 16px;border-radius:12px;margin:0 0 16px;font-weight:500;border:1px solid}
.alert.ok{background:#e7f8ef;border-color:#9bdbb8;color:#0b6b3a}
.alert.err{background:#fdeaea;border-color:#f3b4b0;color:#a1231b}
[data-theme=dark] .alert.ok{background:#0e3022;border-color:#1c6d49;color:#8be0b5}
[data-theme=dark] .alert.err{background:#3a1717;border-color:#7a2b2b;color:#ffb3ad}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.ci{display:flex;gap:16px;align-items:flex-start;margin-top:22px}
.ci>span{width:52px;height:52px;border-radius:14px;background:var(--brand);color:#fff;display:grid;place-items:center;flex:none}
[data-theme=dark] .ci>span{color:#06222b}
.ci b{color:var(--brand-d)}.ci p{margin:0}
.map{width:100%;height:220px;border:0;border-radius:12px;filter:none}
.map.big{height:380px;margin-top:40px;border-radius:var(--r)}
[data-theme=dark] .map{filter:invert(.9) hue-rotate(180deg) brightness(.9)}

/* footer */
.foot{background:var(--navy);color:#dbe7f3;padding:56px 0 0}
.foot .brand{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.2fr .8fr 1.3fr 1.3fr;gap:32px}
.foot h3{color:#fff;font-size:1.05rem}
.flist{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.flist a,.foot a{color:#c8d8e8}.flist a:hover{color:#fff}
.flist.c li{display:flex;gap:10px;align-items:flex-start}.flist.c .ic{margin-top:5px;color:var(--brand)}
.foot .soc{justify-content:flex-start}
.foot-bot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:20px 0;font-size:.88rem;color:#9fb3c8}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}

/* auth/install */
.auth-body{display:grid;place-items:center;min-height:100vh;padding:20px}
.auth-card{width:min(440px,100%);background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow);display:grid;gap:14px}
.auth-card h1{margin:0;font-size:1.5rem}
.auth-card form{display:grid;gap:14px}
.chk{display:flex;gap:8px;align-items:center;font-weight:500}

/* responsive */
@media (max-width:1120px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .burger{display:grid}
  .menu{position:absolute;top:72px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 16px 16px;display:none;margin:0}
  .menu.open{display:flex}
  .menu a{padding:12px 14px}
  .tools{margin-left:auto}
}
@media (max-width:760px){
  .sec{padding:48px 0}
  .g2,.g3,.g4,.detail,.contact-grid,.row2{grid-template-columns:1fr}
  .detail{gap:24px}.hide-sm{display:none}
  .foot-grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr}
  .svc.wide{flex-direction:column}
  .slide{padding:56px 0 72px}.hero{min-height:420px}
  .nav-in{gap:10px}.brand small{display:none}
}

/* v2: service clamp, gallery, lightbox */
.svc{display:flex;flex-direction:column;align-items:center}
.svc h3 a{color:var(--text)}
.svc p.clamp{display:-webkit-box;-webkit-line-clamp:5;line-clamp:5;-webkit-box-orient:vertical;overflow:hidden;text-align:center;margin-bottom:14px}
.svc .more{margin-top:auto}
.gal{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}
.gal a{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--surface2)}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.gal a:hover img{transform:scale(1.07)}
.lb{position:fixed;inset:0;background:rgba(5,12,24,.88);z-index:200;display:grid;place-items:center;padding:20px;cursor:zoom-out}
.lb img{max-width:100%;max-height:100%;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.lead{font-size:1.15rem;color:var(--muted)}
.actions-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.article .svc-ic{margin-bottom:12px}

[hidden]{display:none!important}

.brand span{white-space:nowrap}
@media (max-width:1320px){.menu a{padding:8px 8px;font-size:.9rem}.nav-in{gap:12px}}

/* visitor bar (footer bottom) */
.vbar{background:rgba(0,0,0,.28);border-top:1px solid rgba(255,255,255,.1);padding:16px 0 18px}
.vbar .vtitle{margin:0 0 10px;color:#9fb3c8;font-size:.85rem;display:flex;gap:8px;align-items:center;justify-content:center}
.vbar ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,1fr);gap:10px;text-align:center}
.vbar li{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:10px 6px}
.vbar b{display:flex;justify-content:center;align-items:center;gap:8px;color:#fff;font-size:1.25rem;font-variant-numeric:tabular-nums}
.vbar span{display:block;color:#9fb3c8;font-size:.78rem}
.vbar li.live b{color:#5eead4}
.pulse{width:9px;height:9px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:pl 1.8s infinite}
@keyframes pl{70%{box-shadow:0 0 0 9px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
@media (max-width:760px){.vbar ul{grid-template-columns:repeat(3,1fr)}}