:root{
  --red:#e5231b;--red-d:#b8160f;--yellow:#ffd400;--ink:#1c232d;--ink-2:#3b4552;--muted:#6b7480;
  --bg:#ffffff;--soft:#f4f5f7;--line:#e3e6ea;--radius:16px;--shadow:0 12px 32px rgba(28,35,45,.10)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Sarabun",system-ui,sans-serif}
h1,h2,h3,h4,.btn,.logo,.kicker,nav a,.tabs button{font-family:"Kanit",system-ui,sans-serif}
h1,h2,h3,h4,p{margin:0}
a{color:inherit}
img,svg{display:block}
.wrap{width:min(1200px,100%);margin:0 auto;padding:0 24px}
.wrap.narrow{width:min(820px,100%)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:999px;font-weight:600;font-size:16px;padding:12px 22px;cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s;white-space:nowrap}
.btn svg{width:20px;height:20px;fill:currentColor}
.btn.sm{padding:9px 18px;font-size:15px}
.btn.lg{padding:15px 28px;font-size:18px}
.btn.red{background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(229,35,27,.28)}
.btn.red:hover{background:var(--red-d);transform:translateY(-2px)}
.btn.yellow{background:var(--yellow);color:var(--ink)}
.btn.yellow:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.25)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}

/* top bar + nav */
.topbar{background:var(--ink);color:#c9d0d9;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:7px;padding-bottom:7px;flex-wrap:wrap}
.topbar a{color:var(--yellow);font-weight:600;text-decoration:none}
.demo-tag{background:#2d3745;border-radius:99px;padding:0 10px}
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:24px;letter-spacing:.04em;color:var(--ink)}
.logo svg{width:40px;height:40px}
.logo b{color:var(--red)}
.logo.light{color:#fff}
nav{display:flex;gap:26px;flex:1}
nav a{text-decoration:none;font-weight:500;color:var(--ink-2);position:relative;padding:6px 0}
nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:3px;background:var(--red);border-radius:3px;transition:right .2s}
nav a:hover{color:var(--ink)}nav a:hover::after{right:0}
.burger{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:10px}
.burger span{height:3px;background:var(--ink);border-radius:3px;transition:.2s}

/* hero */
.hero{background:linear-gradient(180deg,#fff 0%,#fff 60%,var(--soft) 60%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:40px;padding-top:56px;padding-bottom:70px}
.kicker{color:var(--red);font-weight:600;font-size:15px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.kicker.light{color:var(--yellow)}
.hero h1{font-size:clamp(36px,5.2vw,62px);line-height:1.12;font-weight:800}
.hero h1 span{color:var(--red)}
.lead{font-size:18px;color:var(--ink-2);margin:20px 0 28px;max-width:540px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-points{list-style:none;padding:0;margin:26px 0 0;display:flex;gap:20px;flex-wrap:wrap;color:var(--ink-2);font-weight:500}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto}
.hero-art .wheel{transform-box:fill-box;transform-origin:center;animation:spin 1.6s linear infinite}
.hero-art .speed{animation:dash 1.2s ease-in-out infinite alternate}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes dash{from{transform:translateX(0)}to{transform:translateX(-18px)}}
.badge-float{position:absolute;background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:10px 14px;display:flex;gap:10px;align-items:center}
.badge-float b{font-family:Kanit;font-size:28px;color:var(--red);line-height:1}
.badge-float small{font-size:12px;line-height:1.35;color:var(--ink-2)}
.b1{left:-6px;top:20px}.b2{right:0;bottom:30px}

/* quick booking */
.quick{position:relative;margin-top:-40px;z-index:2}
.quick-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;display:grid;grid-template-columns:1.3fr 1.2fr 1fr auto;gap:16px;align-items:end;border-top:5px solid var(--red)}
.field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.field select,.field input{width:100%;height:48px;border:1px solid var(--line);border-radius:12px;padding:0 14px;font:inherit;background:#fff;color:var(--ink)}
.field select:focus,.field input:focus{border-color:var(--red);outline:0;box-shadow:0 0 0 3px rgba(229,35,27,.15)}
.quick-card .btn{height:48px}
.quick-note{grid-column:1/-1;font-size:13px;color:var(--muted)}

/* sections */
.section{padding:90px 0}
.section.alt{background:var(--soft)}
.head{margin-bottom:36px}
.head h2{font-size:clamp(28px,3.4vw,40px);line-height:1.2;font-weight:700}
.head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}

/* services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column;gap:10px}
.svc:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.svc .icon{width:56px;height:56px;border-radius:14px;background:#fdecea;display:grid;place-items:center}
.svc .icon svg{width:30px;height:30px;fill:none;stroke:var(--red);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.svc h3{font-size:21px;font-weight:600}
.svc p{color:var(--muted);flex:1}
.svc .price{font-family:Kanit;font-weight:600}
.svc .price b{color:var(--red);font-size:22px}
.svc button{align-self:flex-start;border:0;background:none;padding:0;color:var(--red);font:600 15px Kanit;cursor:pointer}
.svc button:hover{text-decoration:underline}

/* promos */
.tabs{display:flex;gap:6px;background:#fff;padding:5px;border-radius:999px;border:1px solid var(--line)}
.tabs button{border:0;background:transparent;padding:8px 16px;border-radius:999px;font-size:15px;cursor:pointer;color:var(--ink-2)}
.tabs button[aria-selected=true]{background:var(--ink);color:#fff}
.promos{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.promo{border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 2px 0 var(--line);display:flex;flex-direction:column}
.promo .band{padding:24px;color:#fff;background:linear-gradient(135deg,var(--red),#ff5a36);position:relative;min-height:150px}
.promo.yellow .band{background:linear-gradient(135deg,#ffc400,var(--yellow));color:var(--ink)}
.promo.dark .band{background:linear-gradient(135deg,var(--ink),#3b4a5e)}
.promo .band small{font-family:Kanit;font-weight:500;opacity:.9}
.promo .band h3{font-size:26px;line-height:1.2;margin-top:6px}
.promo .band .off{position:absolute;right:18px;bottom:14px;font:800 44px/1 Kanit;opacity:.25}
.promo .body{padding:18px 24px 22px;display:flex;justify-content:space-between;align-items:center;gap:10px}
.promo .body p{font-size:14px;color:var(--muted)}
.promo .body button{flex:none}

/* AI banner */
.ai-banner{background:radial-gradient(circle at 85% 20%,#3a1513 0,transparent 45%),var(--ink);color:#fff;padding:90px 0}
.ai-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center}
.ai-banner h2{font-size:clamp(28px,3.4vw,42px);line-height:1.2;margin-bottom:14px}
.ai-banner p{color:#c3cad4;max-width:520px}
.steps{list-style:none;padding:0;margin:26px 0 30px;display:flex;gap:14px;flex-wrap:wrap}
.steps li{display:flex;align-items:center;gap:10px;background:#2b3442;border-radius:999px;padding:6px 16px 6px 6px}
.steps b{width:30px;height:30px;border-radius:50%;background:var(--yellow);color:var(--ink);display:grid;place-items:center;font-family:Kanit}
.chat-demo{background:#f4f5f7;border-radius:22px;padding:22px;display:flex;flex-direction:column;gap:10px;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.msg{max-width:80%;padding:10px 14px;border-radius:16px;font-size:15px;color:var(--ink);opacity:0;transform:translateY(8px);animation:pop .4s forwards}
.msg.bot{background:#fff;align-self:flex-start;border-bottom-left-radius:4px}
.msg.me{background:var(--red);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.msg:nth-child(1){animation-delay:.2s}.msg:nth-child(2){animation-delay:1s}.msg:nth-child(3){animation-delay:1.8s}.msg:nth-child(4){animation-delay:2.6s}.msg:nth-child(5){animation-delay:3.4s}
@keyframes pop{to{opacity:1;transform:none}}
.typing{display:flex;gap:4px;background:#fff;align-self:flex-start;padding:12px 14px;border-radius:16px}
.typing i{width:7px;height:7px;border-radius:50%;background:#9aa3ae;animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}

/* why */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.why>div{padding:26px;border-radius:var(--radius);background:var(--soft)}
.why .ico{font-size:30px}
.why h3{font-size:20px;margin:10px 0 6px}
.why p{color:var(--muted);font-size:15px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px;border-radius:var(--radius);overflow:hidden;background:var(--red);color:#fff}
.stats div{padding:28px;text-align:center;border-right:1px solid rgba(255,255,255,.2)}
.stats div:last-child{border:0}
.stats b{display:block;font:800 clamp(28px,3.4vw,42px)/1.1 Kanit}
.stats span{font-size:14px;opacity:.9}

/* branches */
.search{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:0 18px;min-width:min(360px,100%)}
.search:focus-within{border-color:var(--red);box-shadow:0 0 0 3px rgba(229,35,27,.15)}
.search svg{width:18px;height:18px;fill:none;stroke:var(--muted);stroke-width:2}
.search input{border:0;outline:0;font:inherit;padding:12px 0;width:100%;background:transparent}
.branches{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.branch{background:#fff;border-radius:14px;padding:20px;border:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.branch h3{font-size:18px}
.branch p{font-size:14px;color:var(--muted)}
.branch .row{display:flex;justify-content:space-between;align-items:center;margin-top:8px;gap:8px}
.open{font-size:13px;font-weight:600;color:#15803d;background:#dcfce7;padding:2px 10px;border-radius:99px}
.open.closed{color:#9a3412;background:#ffedd5}
.branch a{font:600 14px Kanit;color:var(--red);text-decoration:none}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:30px;border:2px dashed var(--line);border-radius:14px}

/* faq */
details{border-bottom:1px solid var(--line);padding:18px 4px}
summary{cursor:pointer;font:600 18px Kanit;list-style:none;display:flex;justify-content:space-between;gap:10px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--red);font-size:24px;line-height:1;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--ink-2);margin-top:10px}

/* footer */
.footer{background:#12171e;color:#aeb6c1;padding:60px 0 24px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.footer p{font-size:14px;margin-top:14px;max-width:360px}
.footer h4{color:#fff;font-size:16px;margin-bottom:12px}
.footer a:not(.logo){display:block;text-decoration:none;font-size:14px;padding:3px 0}
.footer a:hover{color:#fff}
.copy{text-align:center;font-size:13px;margin-top:40px;border-top:1px solid #222a35;padding-top:20px}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media (max-width:1000px){
  .hero-grid,.ai-grid{grid-template-columns:1fr}
  .hero-art{max-width:520px;margin:0 auto;width:100%}
  .services,.promos,.branches{grid-template-columns:1fr 1fr}
  .why,.stats{grid-template-columns:1fr 1fr}
  .stats div:nth-child(2){border-right:0}
  .quick-card{grid-template-columns:1fr 1fr}
  .quick-card .btn{grid-column:1/-1}
}
@media (max-width:820px){
  .burger{display:flex}
  .nav .btn{display:none}
  nav{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  nav.open{display:flex}
  nav a{padding:12px 0;border-bottom:1px solid var(--soft)}
  .burger[aria-expanded=true] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .burger[aria-expanded=true] span:nth-child(2){opacity:0}
  .burger[aria-expanded=true] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}
@media (max-width:620px){
  .wrap{padding:0 16px}
  .section,.ai-banner{padding:64px 0}
  .services,.promos,.branches,.why,.quick-card,.foot-grid{grid-template-columns:1fr}
  .hero-grid{padding-top:32px}
  .btn.lg{width:100%}
  .badge-float{transform:scale(.85)}
  .b1{left:-10px;top:0}.b2{right:-10px;bottom:10px}
  .topbar .demo-tag{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .msg{opacity:1;transform:none}
  .reveal{opacity:1;transform:none}
}