:root{
  color-scheme: light;
  --paper:#FFFFFF; --wall:#EEF0EA; --ink:#172033; --ink-2:#4B5563; --line:#D9DCD6;
  --fresh:#1E9E78; --fresh-dark:#17836A; --fresh-deep:#0F5C47; --fresh-soft:#DDF1E8; --amber:#E39A2E; --exito:#fa3c4c;
  --display:"Anuphan",system-ui,sans-serif; --body:"IBM Plex Sans Thai",system-ui,sans-serif;
  --r:10px; --gutter:16px; --measure:36rem;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--display);line-height:1.22;margin:0 0 .45em;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.4vw,3rem);font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:600}
h3{font-size:1.15rem;font-weight:600}
p{margin:0 0 1em;max-width:var(--measure)}
a{color:inherit}
img,video{max-width:100%;height:auto;display:block}
.wrap{width:min(1120px,100% - 2*var(--gutter));margin-inline:auto}
section{padding:clamp(48px,6.5vw,88px) 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--fresh);color:#fff;text-decoration:none;font-family:var(--display);font-weight:600;font-size:1.05rem;padding:.85rem 1.4rem;border-radius:var(--r);border:0;cursor:pointer;line-height:1.2;white-space:nowrap;transition:background .2s,transform .1s}
.btn:hover{background:var(--fresh-dark)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.6;cursor:progress}
.btn.ink{background:var(--ink)}
.btn.ink:hover{background:#0F1624}
.btn.white{background:#fff;color:var(--fresh-deep)}
.btn.white:hover{background:#E8F3EE}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.note{color:var(--ink-2);font-size:.95rem}
.small{font-size:.9rem;color:var(--ink-2)}

/* section colour rhythm: white / dark / white / mint / white / green band / grey / ink footer */
.dark{background:var(--ink);color:#fff}
.dark .note,.dark .small,.dark p{color:#C3CAD6}
.dark h2,.dark h3{color:#fff}
.mint{background:var(--fresh-soft)}
.grey{background:var(--wall)}
.band{background:var(--fresh-deep);color:#fff}
.band p,.band .note{color:#CDE8DD}
.band h2{color:#fff}

header{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:64px}
.brand{display:flex;align-items:center;gap:.9rem}
.brand img{height:20px;width:auto}
.by{font-size:.78rem;color:var(--ink-2);border-left:1px solid var(--line);padding-left:.9rem;line-height:1.3}
.by b{color:var(--exito);font-weight:600}
.bar .btn{padding:.55rem 1rem;font-size:.95rem}
.bar .btn em{font-style:normal;display:none}
@media (max-width:560px){.bar .btn span{display:none}.bar .btn em{display:inline}}

/* hero */
.hero{background:var(--paper);padding:clamp(28px,4vw,56px) 0 clamp(40px,5vw,72px)}
.hero-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(24px,4vw,56px);align-items:center}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}}
.hero p.lead{font-size:1.12rem;color:var(--ink-2);margin-bottom:1.3rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem 1.1rem;align-items:center}
.visual{position:relative;padding-bottom:1.6rem}
.visual img,.visual video{border-radius:var(--r);width:100%;aspect-ratio:16/10;object-fit:cover;display:block;background:#0f1624}
@media (prefers-reduced-motion:reduce){.visual video{display:none}.visual::before{content:"";display:block;border-radius:var(--r);width:100%;aspect-ratio:16/10;background:url(img/gen-hero-bedroom.jpg) center/cover}}
.meter{position:absolute;left:1rem;bottom:0;width:min(22rem,calc(100% - 2rem));background:var(--ink);color:#fff;border-radius:var(--r);padding:1rem 1.1rem .9rem;box-shadow:0 12px 32px rgba(23,32,51,.25)}
@media (max-width:560px){.visual{padding-bottom:0}.meter{position:static;width:auto;margin-top:.8rem;box-shadow:none}}
.meter .lbl{font-size:.82rem;color:#B7BEC9;margin:0}
.meter .val{font-family:var(--display);font-size:2.9rem;font-weight:600;line-height:1;letter-spacing:-.02em;margin:.15rem 0 .1rem;font-variant-numeric:tabular-nums;color:var(--amber);transition:color .6s}
.meter .val small{font-size:.95rem;font-weight:500;color:#B7BEC9;margin-left:.35rem;letter-spacing:0}
.meter.on .val{color:#5FD3A9}
.meter .state{font-size:.85rem;margin:0 0 .7rem;color:#DDE2EA;min-height:1.6em;max-width:none}
.meter-foot{display:flex;justify-content:space-between;align-items:center;gap:.6rem;flex-wrap:wrap}
.toggle{display:inline-flex;align-items:center;gap:.5rem;background:#fff;color:var(--ink);border:0;border-radius:var(--r);padding:.45rem .5rem .45rem .8rem;font-family:var(--display);font-weight:600;font-size:.88rem;cursor:pointer}
.toggle .knob{width:30px;height:18px;border-radius:99px;background:#C9CED8;position:relative;transition:background .3s}
.toggle .knob::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:transform .3s}
.meter.on .toggle .knob{background:var(--fresh)}
.meter.on .toggle .knob::after{transform:translateX(12px)}
.meter .src{font-size:.72rem;color:#8E97A6;margin:0}

/* problems (dark) */
.probs{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem 3rem;margin-top:1.4rem;max-width:900px}
@media (max-width:640px){.probs{grid-template-columns:1fr}}
.probs div{border-top:2px solid var(--fresh);padding-top:.7rem}
.probs h3{font-size:1.05rem;margin-bottom:.2rem}
.probs p{font-size:.96rem;margin:0}

/* how */
.how-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
@media (max-width:900px){.how-grid{grid-template-columns:1fr}}
.how-grid img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%}
.flow{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.9rem}
.flow li{display:grid;grid-template-columns:5.2rem 1fr;gap:.9rem;align-items:baseline;border-top:1px solid var(--line);padding-top:.9rem}
.flow .n{font-family:var(--display);font-size:1.6rem;font-weight:600;color:var(--fresh);line-height:1;white-space:nowrap}
.flow .n small{font-size:.75rem;color:var(--ink-2);font-weight:500;display:block;margin-top:.15rem}
.flow p{margin:0;font-size:.96rem}

/* disclosure */
details.disc{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);margin-top:1.2rem}
.mint details.disc{border-color:#BFDCCF}
details.disc>summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.9rem 1.1rem;font-family:var(--display);font-weight:600;font-size:1.02rem}
details.disc>summary::-webkit-details-marker{display:none}
details.disc>summary::after{content:"";width:.6rem;height:.6rem;border-right:2px solid var(--ink-2);border-bottom:2px solid var(--ink-2);transform:rotate(45deg);transition:transform .2s;flex:none;margin-right:.3rem}
details.disc[open]>summary::after{transform:rotate(-135deg)}
details.disc>.body{padding:1rem 1.1rem 1.1rem;border-top:1px solid var(--line)}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem 2.5rem}
@media (max-width:760px){.spec-grid{grid-template-columns:1fr}}
.modes{width:100%;border-collapse:collapse;font-size:.92rem}
.modes th,.modes td{padding:.45rem .3rem;border-bottom:1px solid var(--line);text-align:right}
.modes th:first-child,.modes td:first-child{text-align:left}
.modes th{font-weight:600;font-family:var(--display)}
.kv{list-style:none;margin:0;padding:0;font-size:.93rem}
.kv li{display:flex;justify-content:space-between;gap:1rem;padding:.35rem 0}
.kv li span:last-child{text-align:right;font-weight:500}
.certs{display:flex;flex-wrap:wrap;gap:.5rem;margin:.8rem 0 0;padding:0;list-style:none;font-size:.88rem}
.certs li{padding:.25rem .7rem;border:1px solid var(--line);border-radius:99px}

/* compare */
.tbl{width:100%;border-collapse:collapse;font-size:.94rem}
.tbl th,.tbl td{padding:.65rem .6rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{font-family:var(--display);font-weight:600}
.tbl td:not(:first-child),.tbl th:not(:first-child){text-align:center}
.tbl .yes{color:var(--fresh);font-weight:600}
.tbl .no{color:#A0A6B1}
.tbl .hl{background:var(--fresh-soft)}
.tbl-scroll{overflow-x:auto}

/* install */
.inst-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
@media (max-width:900px){.inst-grid{grid-template-columns:1fr}}
.inst-grid img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%}
.cond{display:grid;grid-template-columns:1fr 1fr;gap:1rem 2rem}
@media (max-width:640px){.cond{grid-template-columns:1fr}}
.cond ul{margin:.2rem 0 0;padding-left:1.1rem;font-size:.94rem}
.cond li{margin-bottom:.25rem}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.gallery figure{margin:0;aspect-ratio:4/5;overflow:hidden;border-radius:var(--r);background:var(--wall)}
.gallery img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.gallery{grid-template-columns:repeat(2,1fr)}}

/* price */
.price-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:clamp(1.3rem,3vw,2.2rem);display:grid;grid-template-columns:1fr 1fr;gap:1.4rem 3rem;align-items:start}
@media (max-width:760px){.price-card{grid-template-columns:1fr}}
.price{font-family:var(--display);font-size:clamp(2.3rem,5.5vw,3.3rem);font-weight:700;line-height:1;letter-spacing:-.02em;margin:.1rem 0 .3rem}
.price small{font-size:1rem;font-weight:500;color:var(--ink-2);letter-spacing:0}
.incl{list-style:none;padding:0;margin:0;font-size:.95rem}
.incl li{padding:.4rem 0;display:flex;justify-content:space-between;gap:1rem}
.incl li+li{border-top:1px solid var(--line)}
.incl li span:last-child{white-space:nowrap;font-weight:500}

/* CTA band (opens the modal) */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.2rem 0 1.6rem;max-width:860px}
@media (max-width:640px){.steps{grid-template-columns:1fr}}
.steps div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--r);padding:.85rem 1rem;font-size:.92rem;color:#E4F1EA}
.steps b{display:block;font-family:var(--display);font-weight:600;font-size:1rem;margin-bottom:.1rem;color:#fff}
.band .hero-actions .alt{color:#CDE8DD}

/* modal forms */
dialog.modal{border:0;border-radius:14px;padding:0;width:min(680px,100% - 2rem);max-height:min(92vh,900px);background:var(--paper);color:var(--ink);box-shadow:0 30px 80px rgba(0,0,0,.35)}
dialog.modal::backdrop{background:rgba(23,32,51,.6)}
dialog.modal .m-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;padding:1.3rem 1.4rem .6rem}
dialog.modal .m-head h2{font-size:1.4rem;margin:0}
dialog.modal .m-head p{margin:.2rem 0 0;font-size:.92rem;color:var(--ink-2)}
dialog.modal .m-body{padding:0 1.4rem 1.4rem;overflow:auto;max-height:calc(min(92vh,900px) - 6rem)}
.x{background:var(--wall);border:0;width:2.2rem;height:2.2rem;border-radius:50%;font-size:1.3rem;line-height:1;cursor:pointer;color:var(--ink);flex:none}
.x:hover{background:var(--line)}
form{max-width:none}
fieldset{border:0;padding:0;margin:0 0 1.1rem}
legend{font-family:var(--display);font-weight:600;font-size:1rem;margin-bottom:.3rem;padding:0}
label{display:block;font-size:.92rem;font-weight:500;margin:.7rem 0 .25rem}
label .opt{font-weight:400;color:var(--ink-2)}
input[type=text],input[type=tel],input[type=email],input[type=date],select,textarea{width:100%;font:inherit;font-size:1rem;padding:.6rem .8rem;border:1px solid #9AA39B;border-radius:8px;background:#fff;color:var(--ink)}
::placeholder{color:#6B7280}
textarea{min-height:4rem;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:0 1rem}
@media (max-width:560px){.two{grid-template-columns:1fr}}
.drop{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
@media (max-width:560px){.drop{grid-template-columns:1fr}}
.drop label{margin-top:0;border:2px dashed #7F8A80;border-radius:8px;background:#FAFBF9;padding:.9rem;text-align:center;cursor:pointer;min-height:7.5rem;display:flex;flex-direction:column;justify-content:center;gap:.2rem}
.drop label b{font-family:var(--display);font-weight:600}
.drop label span{font-size:.82rem;color:var(--ink-2);font-weight:400}
.drop input[type=file]{width:100%;font-size:.82rem;margin-top:.4rem}
.drop img.prev{max-height:130px;width:auto;margin:.4rem auto 0;border-radius:6px}
.check{display:flex;gap:.7rem;align-items:flex-start;font-size:.92rem;font-weight:400;margin:.8rem 0}
.check input{margin-top:.35rem;width:1.1rem;height:1.1rem;flex:none}
.check span{flex:1}
.form-foot{margin-top:.8rem;display:flex;flex-wrap:wrap;gap:.8rem 1.2rem;align-items:center}
.alt{font-size:.94rem;color:var(--ink-2)}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.msg{border-radius:var(--r);padding:.9rem 1.1rem;font-size:.95rem;margin-top:1rem}
.msg.err{background:#FBE9E9;color:#8A1C1C}
.msg.ok{background:var(--fresh-soft);border:1px solid #BFDCCF}
.msg.ok b{font-family:var(--display);font-size:1.05rem;display:block;margin-bottom:.2rem}
[hidden]{display:none!important}

/* faq: same left edge as every other section, two columns on desktop */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 3rem;margin-top:.5rem}
@media (max-width:860px){.faq-grid{grid-template-columns:1fr}}
.faq details{border-top:1px solid #CFD3CB;padding:.55rem 0}
.faq summary{cursor:pointer;font-family:var(--display);font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:1rem;padding:.25rem 0}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;color:var(--ink-2);flex:none}
.faq details[open] summary::after{content:"−"}
.faq details p{font-size:.96rem;color:var(--ink-2);margin:.4rem 0 .3rem}

footer{background:var(--ink);color:#C8CED8;font-size:.88rem;padding:2.4rem 0 2rem}
footer .logos{display:flex;align-items:center;gap:1.2rem;margin-bottom:1.6rem;padding-bottom:1.4rem;border-bottom:1px solid rgba(255,255,255,.12)}
footer .logos img.sunon{height:22px;width:auto}
footer .logos img.exito{height:34px;width:auto}
footer .logos .sep{width:1px;height:28px;background:rgba(255,255,255,.25)}
footer .logos .name{font-family:var(--display);font-weight:600;color:#fff;font-size:.95rem;line-height:1.2}
footer .logos .name small{display:block;font-weight:400;color:#8E97A6;font-size:.78rem}
footer .cols{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:2rem}
@media (max-width:760px){footer .cols{grid-template-columns:1fr}}
footer a{color:#fff}
footer p{margin:0 0 .5em}
footer h3{color:#fff;font-size:1rem}