/* ============================================================
   Air-D Solution — สไตล์เว็บทั้งหมด
   สี ฟอนต์ และค่าต่าง ๆ อยู่ในบล็อก :root ด้านล่าง (แก้ที่นี่ที่เดียว)
   ============================================================ */
:root{
  --bg:#F1F6F4; --surface:#FFFFFF; --surface-2:#E7F0EC; --surface-3:#F7FBF9;
  --ink:#0C2226; --ink-soft:#46595C; --ink-faint:#7C9195;
  --line:#DAE6E2; --line-strong:#C2D2CE;
  --lime:#8BC34A; --green:#54BE7B; --teal:#3E9B8E; --blue:#2B5B8E; --navy:#264F86; --leaf:#3E7CA6;
  --accent:#2E9E86; --accent-deep:#227A67; --accent-bright:#3EB899;
  --tint:#E5F4EE; --tint-blue:#E7EEF7;
  --sale:#E5484D; --gold:#E0912F;
  --line-green:#06C755; --line-green-deep:#05A247;
  --grad:linear-gradient(135deg,var(--lime) 0%,var(--green) 40%,var(--teal) 70%,var(--blue) 100%);
  --shadow:0 1px 2px rgba(12,34,38,.05), 0 8px 22px rgba(12,34,38,.07);
  --shadow-lg:0 2px 8px rgba(12,34,38,.08), 0 22px 48px rgba(12,34,38,.15);
  --radius:15px; --radius-sm:10px; --maxw:1200px;
  --mono:'DejaVu Sans Mono','SFMono-Regular',ui-monospace,Menlo,Consolas,monospace;
  --thai:'LINE Seed Sans TH','Leelawadee UI','Sukhumvit Set','Noto Sans Thai','Sarabun',system-ui,'Segoe UI',Tahoma,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#061414; --surface:#0D2220; --surface-2:#132F2B; --surface-3:#0A1D1B;
    --ink:#E6F2EE; --ink-soft:#9DB4B0; --ink-faint:#6C8682;
    --line:#20403B; --line-strong:#2D514B;
    --accent:#3EBE9E; --accent-deep:#2C9A7F; --accent-bright:#5AD6B4;
    --tint:#0F2C24; --tint-blue:#0F2338; --sale:#F2555A; --gold:#E8A64B;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 22px rgba(0,0,0,.5);
    --shadow-lg:0 2px 8px rgba(0,0,0,.5), 0 22px 48px rgba(0,0,0,.6);
  }
}
:root[data-theme="light"]{
  --bg:#F1F6F4; --surface:#FFFFFF; --surface-2:#E7F0EC; --surface-3:#F7FBF9;
  --ink:#0C2226; --ink-soft:#46595C; --ink-faint:#7C9195; --line:#DAE6E2; --line-strong:#C2D2CE;
  --accent:#2E9E86; --accent-deep:#227A67; --accent-bright:#3EB899; --tint:#E5F4EE; --tint-blue:#E7EEF7; --sale:#E5484D; --gold:#E0912F;
  --shadow:0 1px 2px rgba(12,34,38,.05), 0 8px 22px rgba(12,34,38,.07);
  --shadow-lg:0 2px 8px rgba(12,34,38,.08), 0 22px 48px rgba(12,34,38,.15);
}
:root[data-theme="dark"]{
  --bg:#061414; --surface:#0D2220; --surface-2:#132F2B; --surface-3:#0A1D1B;
  --ink:#E6F2EE; --ink-soft:#9DB4B0; --ink-faint:#6C8682; --line:#20403B; --line-strong:#2D514B;
  --accent:#3EBE9E; --accent-deep:#2C9A7F; --accent-bright:#5AD6B4; --tint:#0F2C24; --tint-blue:#0F2338; --sale:#F2555A; --gold:#E8A64B;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 22px rgba(0,0,0,.5);
  --shadow-lg:0 2px 8px rgba(0,0,0,.5), 0 22px 48px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0; background:var(--bg); color:var(--ink); font-family:var(--thai); font-size:16px; line-height:1.55; -webkit-font-smoothing:antialiased}
body.locked{overflow:hidden}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 20px}
h1,h2,h3{margin:0; line-height:1.2; font-weight:800; letter-spacing:-.01em}
p{margin:0}
a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}
[hidden]{display:none !important}
.btn{display:inline-flex; align-items:center; gap:8px; justify-content:center; font-family:var(--thai); font-size:15px; font-weight:700; cursor:pointer; padding:11px 18px; border-radius:10px; border:1px solid transparent; transition:.15s; line-height:1}
.btn:active{transform:translateY(1px)}
.btn svg{width:17px;height:17px;flex:none}
.btn-line{background:var(--line-green); color:#fff}
.btn-line:hover{background:var(--line-green-deep)}
.btn-solid{background:var(--accent); color:#fff}
.btn-solid:hover{background:var(--accent-deep)}
.btn-ghost{background:transparent; color:var(--ink); border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent)}
.btn:disabled{opacity:.5; cursor:not-allowed}

.topbar{background:var(--accent-deep); color:#fff; font-size:13px}
.topbar .in{display:flex; align-items:center; gap:18px; height:38px}
.topbar a{color:#fff; opacity:.92; display:inline-flex; align-items:center; gap:6px; cursor:pointer}
.topbar a:hover{opacity:1}
.topbar svg{width:14px;height:14px}
.topbar .r{margin-left:auto; display:flex; gap:18px}
@media(max-width:760px){ .topbar .hidesm{display:none} }

header.head{position:sticky; top:0; z-index:40; background:color-mix(in srgb,var(--bg) 90%,transparent); backdrop-filter:blur(12px); border-bottom:1px solid var(--line)}
.head-in{display:flex; align-items:center; gap:20px; height:70px}
.brand{display:flex; align-items:center; gap:11px; cursor:pointer}
.brand .site-logo{height:42px; width:auto; flex:none}
.brand .name{display:flex; flex-direction:column; line-height:1.03}
.brand .name b{font-size:20px; font-weight:800; letter-spacing:-.02em}
.brand .name span{font-family:var(--mono); font-size:9.5px; letter-spacing:.1em; color:var(--ink-soft); text-transform:uppercase}
.search{flex:1; max-width:460px; display:flex; align-items:center; gap:8px; background:var(--surface); border:1.5px solid var(--line-strong); border-radius:11px; padding:0 12px; height:44px}
.search:focus-within{border-color:var(--accent)}
.search svg{width:18px;height:18px;color:var(--ink-faint);flex:none}
.search input{border:none; background:none; outline:none; width:100%; font-family:var(--thai); font-size:15px; color:var(--ink)}
.head-actions{margin-left:auto; display:flex; align-items:center; gap:10px}
.icon-btn{position:relative; width:44px;height:44px;border-radius:11px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--ink-soft)}
.icon-btn:hover{color:var(--accent);border-color:var(--accent)} .icon-btn svg{width:20px;height:20px}
.icon-btn .badge{position:absolute; top:-6px; right:-6px; background:var(--sale); color:#fff; font-size:11px; font-weight:800; min-width:19px; height:19px; padding:0 5px; border-radius:999px; display:grid; place-items:center; font-variant-numeric:tabular-nums}
@media(max-width:860px){ .search{display:none} }

.catnav{background:var(--surface); border-bottom:1px solid var(--line)}
.catnav-in{display:flex; gap:4px; height:50px; align-items:center; overflow-x:auto}
.catnav a{padding:9px 15px; border-radius:9px; font-size:14.5px; font-weight:600; color:var(--ink-soft); white-space:nowrap; display:inline-flex; align-items:center; gap:7px; cursor:pointer}
.catnav a:hover{background:var(--surface-2); color:var(--accent)}
.catnav a.hot{color:var(--sale)}
.catnav a svg{width:16px;height:16px}

section{padding:44px 0}
.sec-title{display:flex; align-items:flex-end; gap:14px; margin-bottom:22px}
.sec-title h2{font-size:clamp(21px,3vw,28px)}
.sec-title .more{margin-left:auto; font-size:14px; font-weight:700; color:var(--accent); display:inline-flex; align-items:center; gap:5px; cursor:pointer}
.sec-title .more:hover{gap:8px}

.hero{padding:26px 0 8px}
.hero-grid{display:grid; grid-template-columns:1fr 320px; gap:16px}
.carousel{position:relative; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); min-height:300px}
.slide{position:absolute; inset:0; opacity:0; transition:opacity .6s; display:flex; align-items:center; padding:44px; color:#fff}
.slide.on{opacity:1; position:relative}
.slide.s1{background:linear-gradient(110deg,rgba(15,58,66,.88),rgba(43,91,142,.60)),url('../assets/hero.jpg') center/cover no-repeat}
.slide.s2{background:linear-gradient(120deg,#1f6f5f,var(--green) 90%)}
.slide.s3{background:linear-gradient(120deg,var(--navy),var(--blue) 70%,var(--teal))}
.slide .st{max-width:62%}
.slide .kick{font-family:var(--mono); font-size:12px; letter-spacing:.16em; text-transform:uppercase; opacity:.85}
.slide h2{color:#fff; font-size:clamp(24px,3.6vw,38px); margin:10px 0 8px; line-height:1.12}
.slide p{opacity:.9; margin-bottom:18px; font-size:16px}
.slide .deco{position:absolute; right:-20px; bottom:-30px; width:230px; height:auto; opacity:.16}
.dots{position:absolute; bottom:16px; left:44px; display:flex; gap:8px; z-index:2}
.dots button{width:9px;height:9px;border-radius:50%;border:none;background:rgba(255,255,255,.5);cursor:pointer;padding:0}
.dots button.on{background:#fff; width:24px; border-radius:5px}
.side-promos{display:flex; flex-direction:column; gap:16px}
.side-promo{flex:1; border-radius:var(--radius); padding:20px; display:flex; flex-direction:column; justify-content:center; box-shadow:var(--shadow); color:#fff; position:relative; overflow:hidden; cursor:pointer}
.side-promo.a{background:linear-gradient(135deg,var(--gold),#c9791f)}
.side-promo.b{background:linear-gradient(135deg,#2b6f8e,var(--navy))}
.side-promo .k{font-size:12px; opacity:.9; font-weight:700}
.side-promo h3{color:#fff; font-size:19px; margin:4px 0 2px}
.side-promo span{font-size:13px; opacity:.9}
.side-promo svg{position:absolute; right:-6px; bottom:-6px; width:70px; height:70px; opacity:.25}
@media(max-width:900px){ .hero-grid{grid-template-columns:1fr} .side-promos{flex-direction:row} .slide{padding:30px} .slide .st{max-width:80%} .dots{left:30px} }
@media(max-width:560px){ .side-promos{flex-direction:column} }

.trust{background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
.trust-in{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; padding:20px 0}
.trust .t{display:flex; align-items:center; gap:12px}
.trust .t .ic{width:44px;height:44px;border-radius:11px;background:var(--tint);display:grid;place-items:center;color:var(--accent);flex:none}
.trust .t .ic svg{width:23px;height:23px}
.trust .t b{font-size:15px; display:block} .trust .t span{font-size:13px; color:var(--ink-soft)}
@media(max-width:760px){ .trust-in{grid-template-columns:repeat(2,1fr)} }

.cats{display:grid; grid-template-columns:repeat(6,1fr); gap:14px}
.cat-tile{border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); padding:20px 12px; text-align:center; box-shadow:var(--shadow); transition:.15s; cursor:pointer}
.cat-tile:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg); border-color:var(--accent)}
.cat-tile .ic{width:54px;height:54px;border-radius:14px;background:var(--tint);display:grid;place-items:center;color:var(--accent);margin:0 auto 10px}
.cat-tile .ic svg{width:28px;height:28px}
.cat-tile b{font-size:14px; display:block} .cat-tile span{font-size:12px; color:var(--ink-faint)}
@media(max-width:900px){ .cats{grid-template-columns:repeat(3,1fr)} }
@media(max-width:520px){ .cats{grid-template-columns:repeat(2,1fr)} }

.prods{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
.prod{border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--surface); box-shadow:var(--shadow); display:flex; flex-direction:column; transition:.15s}
.prod:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg)}
.prod .img{aspect-ratio:1/1; display:grid; place-items:center; position:relative; background:linear-gradient(160deg,var(--tint),var(--surface-2)); border-bottom:1px solid var(--line); overflow:hidden}
.prod .img svg{width:40%;height:40%;color:var(--accent);opacity:.8}
.prod .img svg.unit{width:74%;height:auto;opacity:1;filter:drop-shadow(0 6px 12px rgba(12,34,38,.14))}
.prod .img img{width:100%; height:100%; object-fit:cover}
.prod .off{position:absolute; top:10px; left:10px; background:var(--sale); color:#fff; font-size:12px; font-weight:800; padding:4px 9px; border-radius:8px; z-index:2}
.prod .brand-t{position:absolute; top:10px; right:10px; font-weight:800; font-size:12px; background:var(--surface); border:1px solid var(--line); padding:3px 9px; border-radius:7px; z-index:2}
.prod .body{padding:14px; display:flex; flex-direction:column; gap:7px; flex:1}
.prod .ptype{font-family:var(--mono); font-size:11px; color:var(--accent); text-transform:uppercase}
.prod h3{font-size:15px; line-height:1.35; min-height:2.6em}
.prod .tags{display:flex; gap:5px; flex-wrap:wrap}
.prod .tags span{font-size:11px; padding:2px 7px; border-radius:6px; background:var(--surface-2); color:var(--ink-soft); font-weight:600}
.prod .pricing{margin-top:auto}
.prod .was{font-size:13px; color:var(--ink-faint); text-decoration:line-through}
.prod .now{font-size:22px; font-weight:800; color:var(--sale); font-variant-numeric:tabular-nums; line-height:1.1}
.prod .now small{font-size:13px; font-weight:600; color:var(--ink-soft)}
.prod .buy{display:flex; gap:7px; margin-top:10px}
.prod .buy .btn-solid{flex:1; padding:10px}
.prod .buy .add2{width:42px; border:1px solid var(--line-strong); border-radius:10px; background:var(--surface); display:grid; place-items:center; cursor:pointer; color:var(--ink-soft)}
.prod .buy .add2:hover{border-color:var(--accent); color:var(--accent)}
.prod .buy .add2 svg{width:19px;height:19px}
@media(max-width:900px){ .prods{grid-template-columns:repeat(2,1fr)} }
@media(max-width:460px){ .prods{grid-template-columns:1fr} }

.brands-sec{background:var(--surface-3); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
.brand-grid{display:grid; grid-template-columns:repeat(8,1fr); gap:10px}
.bchip{display:flex; align-items:center; justify-content:center; min-height:64px; padding:14px 10px; border-radius:11px; border:1px solid var(--line); background:#fff; color:#17303a; font-weight:800; font-size:14px; box-shadow:var(--shadow); text-align:center; transition:.15s; cursor:pointer}
.bchip:hover{border-color:var(--accent); color:var(--accent); transform:translateY(-2px)}
.bchip .blogo{max-height:38px; max-width:92%; object-fit:contain; display:block}
@media(max-width:900px){ .brand-grid{grid-template-columns:repeat(4,1fr)} }
@media(max-width:520px){ .brand-grid{grid-template-columns:repeat(3,1fr)} }

.promoband{display:grid; grid-template-columns:1fr 1fr; gap:16px}
.pb{border-radius:var(--radius); padding:30px; color:#fff; position:relative; overflow:hidden; box-shadow:var(--shadow); display:flex; flex-direction:column; justify-content:center; min-height:150px}
.pb.g{background:linear-gradient(130deg,var(--accent-deep),var(--teal))}
.pb.n{background:linear-gradient(130deg,var(--navy),#2b6f8e)}
.pb .k{font-family:var(--mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase; opacity:.85}
.pb h3{color:#fff; font-size:24px; margin:8px 0 6px}
.pb p{opacity:.9; font-size:15px}
.pb svg{position:absolute; right:-14px; bottom:-14px; width:110px; height:110px; opacity:.16}
@media(max-width:700px){ .promoband{grid-template-columns:1fr} }

.service-in{display:grid; grid-template-columns:1.1fr 1fr; gap:36px; align-items:center}
.service-in .card{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:24px; box-shadow:var(--shadow)}
.std-list{display:grid; gap:12px; margin-top:6px}
.std-list .row{display:flex; gap:12px; align-items:flex-start}
.std-list .row .n{width:30px;height:30px;border-radius:8px;background:var(--tint);color:var(--accent);display:grid;place-items:center;font-weight:800;flex:none;font-size:14px}
.std-list .row b{font-size:15px} .std-list .row span{font-size:14px; color:var(--ink-soft); display:block}
.area-visual{aspect-ratio:4/3; border-radius:var(--radius); border:1px solid var(--line); display:grid; place-items:center; text-align:center; background:linear-gradient(155deg,var(--tint-blue),var(--surface-2)); box-shadow:var(--shadow)}
.area-visual .ph{color:var(--accent); display:flex; flex-direction:column; align-items:center; gap:10px}
.area-visual .ph svg{width:48px;height:48px;opacity:.8} .area-visual .ph small{color:var(--ink-soft); font-size:13px}
@media(max-width:820px){ .service-in{grid-template-columns:1fr; gap:22px} }
.service-photo{width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:var(--radius); border:1px solid var(--line); box-shadow:var(--shadow-lg)}

/* ผลงานติดตั้งจริง (แกลเลอรีรูป) */
.work-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:12px}
.work-grid .shot{position:relative; aspect-ratio:1; border-radius:12px; overflow:hidden; border:1px solid var(--line); display:block; background:var(--surface-2)}
.work-grid .shot img{width:100%; height:100%; object-fit:cover; transition:transform .35s}
.work-grid .shot:hover img{transform:scale(1.06)}
@media(max-width:820px){ .work-grid{grid-template-columns:repeat(2,1fr)} }

/* เนื้อหา SEO */
.seo-content{max-width:920px}
.seo-content h1{font-size:clamp(23px,3.4vw,32px); margin-bottom:16px}
.seo-content h2{font-size:20px; margin:26px 0 8px}
.seo-content p{color:var(--ink-soft); font-size:16px; line-height:1.85; margin-bottom:10px}
.seo-content strong{color:var(--ink); font-weight:700}
/* FAQ */
.faq-list{display:grid; gap:12px; max-width:840px}
.faq-list details{border:1px solid var(--line); border-radius:12px; background:var(--surface); box-shadow:var(--shadow)}
.faq-list summary{padding:16px 20px; font-weight:700; cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:12px; font-size:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+"; color:var(--accent); font-size:24px; font-weight:400; line-height:1; flex:none}
.faq-list details[open] summary{color:var(--accent)}
.faq-list details[open] summary::after{content:"\2212"}
.faq-list details > div{padding:0 20px 16px; color:var(--ink-soft); line-height:1.7; font-size:15px}

.page-head{padding:34px 0 6px}
.crumb{font-family:var(--mono); font-size:12px; letter-spacing:.06em; color:var(--ink-faint); text-transform:uppercase}
.crumb a{cursor:pointer} .crumb a:hover{color:var(--accent)}
.page-head h1{font-size:clamp(24px,4vw,34px); margin:10px 0 6px}
.page-head p{color:var(--ink-soft); font-size:16px; max-width:64ch}
.filters{position:sticky; top:70px; z-index:30; background:color-mix(in srgb,var(--bg) 92%,transparent); backdrop-filter:blur(8px); padding:14px 0; border-bottom:1px solid var(--line); margin-top:16px}
.filter-row{display:flex; align-items:center; gap:9px; flex-wrap:wrap}
.filter-row + .filter-row{margin-top:9px}
.flabel{font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-faint); width:54px; flex:none}
.chip-f{padding:8px 14px; border-radius:999px; border:1px solid var(--line-strong); background:var(--surface); font-size:14px; font-weight:600; color:var(--ink-soft); cursor:pointer; transition:.15s; white-space:nowrap}
.chip-f:hover{border-color:var(--accent); color:var(--accent)}
.chip-f.on{background:var(--accent); border-color:var(--accent); color:#fff}
.count-note{margin-left:auto; font-size:13px; color:var(--ink-faint)}
@media(max-width:600px){ .flabel{width:100%} .count-note{margin-left:0; width:100%} }
.cat-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; padding:24px 0 40px}
@media(max-width:1000px){ .cat-grid{grid-template-columns:repeat(3,1fr)} }
@media(max-width:760px){ .cat-grid{grid-template-columns:repeat(2,1fr)} }
@media(max-width:460px){ .cat-grid{grid-template-columns:1fr} }
.empty{grid-column:1/-1; text-align:center; padding:60px 20px; color:var(--ink-faint)}

.backdrop{position:fixed; inset:0; background:rgba(6,20,20,.5); z-index:60; opacity:0; pointer-events:none; transition:opacity .25s}
.backdrop.open{opacity:1; pointer-events:auto}
.drawer{position:fixed; top:0; right:0; bottom:0; width:min(440px,100%); background:var(--surface); z-index:61; box-shadow:var(--shadow-lg); transform:translateX(100%); transition:transform .28s cubic-bezier(.4,0,.2,1); display:flex; flex-direction:column}
.drawer.open{transform:none}
.dw-head{display:flex; align-items:center; gap:12px; padding:18px 20px; border-bottom:1px solid var(--line)}
.dw-head h3{font-size:18px}
.dw-head .close{margin-left:auto; width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--ink-soft)}
.dw-head .close:hover{color:var(--accent);border-color:var(--accent)}
.dw-body{flex:1; overflow-y:auto; padding:16px 20px}
.dw-empty{text-align:center; color:var(--ink-faint); padding:50px 10px}
.dw-empty svg{width:46px;height:46px;opacity:.4;margin-bottom:12px}
.qitem{display:flex; gap:12px; padding:13px 0; border-bottom:1px solid var(--line)}
.qitem .qi-ic{width:46px;height:46px;border-radius:10px;background:var(--tint);display:grid;place-items:center;color:var(--accent);flex:none}
.qitem .qi-ic svg{width:23px;height:23px}
.qitem .qi-main{flex:1; min-width:0}
.qitem .qi-brand{font-family:var(--mono); font-size:11px; color:var(--accent); text-transform:uppercase}
.qitem .qi-name{font-size:14px; font-weight:700; line-height:1.3}
.qitem .qi-price{font-size:13px; color:var(--ink-soft)}
.qitem .qi-price b{color:var(--ink); font-variant-numeric:tabular-nums}
.qitem .qi-ctrl{display:flex; align-items:center; gap:8px; margin-top:8px}
.stepper{display:inline-flex; align-items:center; border:1px solid var(--line-strong); border-radius:8px; overflow:hidden}
.stepper button{width:28px;height:28px;border:none;background:var(--surface-2);color:var(--ink);cursor:pointer;font-size:16px;font-weight:700;line-height:1}
.stepper button:hover{background:var(--accent);color:#fff}
.stepper .qv{min-width:34px; text-align:center; font-weight:700; font-variant-numeric:tabular-nums; font-size:14px}
.qi-remove{font-size:12px; color:var(--ink-faint); cursor:pointer; margin-left:auto}
.qi-remove:hover{color:#D8483C}
.form-sec{border-top:8px solid var(--surface-2); margin:8px -20px 0; padding:18px 20px 4px}
.form-sec h4{font-size:15px; margin-bottom:4px}
.form-sec .hint{font-size:13px; color:var(--ink-faint); margin-bottom:14px}
.field{margin-bottom:13px}
.field label{display:block; font-size:13px; font-weight:600; margin-bottom:5px; color:var(--ink-soft)}
.field label .req{color:#D8483C}
.field input,.field textarea{width:100%; padding:11px 13px; border:1px solid var(--line-strong); border-radius:9px; background:var(--surface-3); font-family:var(--thai); font-size:15px; color:var(--ink)}
.field input:focus,.field textarea:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.field textarea{resize:vertical; min-height:56px}
.seg-radio{display:flex; gap:8px; flex-wrap:wrap}
.seg-radio label{flex:1; min-width:90px; margin:0; position:relative}
.seg-radio input{position:absolute; opacity:0; pointer-events:none}
.seg-radio .opt{display:block; text-align:center; padding:10px; border:1.5px solid var(--line-strong); border-radius:9px; font-size:13px; font-weight:600; cursor:pointer; color:var(--ink-soft); transition:.15s}
.seg-radio input:checked + .opt{border-color:var(--accent); background:var(--tint); color:var(--accent-deep)}
.dw-foot{padding:14px 20px calc(14px + env(safe-area-inset-bottom)); border-top:1px solid var(--line); background:var(--surface)}
.dw-foot .sum{display:flex; justify-content:space-between; font-size:15px; margin-bottom:12px; align-items:baseline}
.dw-foot .sum b{font-variant-numeric:tabular-nums; font-size:20px; color:var(--ink)}
.dw-foot .subnote{font-size:12px; color:var(--ink-faint); margin-top:-6px; margin-bottom:12px}
.dw-foot .btn-line{width:100%; padding:15px}

.modal-back{position:fixed; inset:0; background:rgba(6,20,20,.55); z-index:70; display:grid; place-items:center; padding:20px; opacity:0; pointer-events:none; transition:opacity .2s}
.modal-back.open{opacity:1; pointer-events:auto}
.modal{background:var(--surface); border-radius:20px; max-width:460px; width:100%; box-shadow:var(--shadow-lg); overflow:hidden; transform:scale(.95); transition:transform .2s}
.modal-back.open .modal{transform:none}
.modal .top{text-align:center; padding:28px 24px 18px}
.modal .check{width:60px;height:60px;border-radius:50%;background:var(--tint);display:grid;place-items:center;margin:0 auto 14px;color:var(--accent)}
.modal .check svg{width:32px;height:32px}
.modal h3{font-size:21px; margin-bottom:6px}
.modal .top p{color:var(--ink-soft); font-size:15px}
.modal .summary{margin:6px 22px 0; background:var(--surface-3); border:1px solid var(--line); border-radius:12px; padding:14px 16px; font-size:13px; max-height:210px; overflow-y:auto}
.modal .summary .r{display:flex; justify-content:space-between; padding:3px 0; gap:12px}
.modal .summary .r span:first-child{color:var(--ink-soft)}
.modal .summary .items{margin-top:8px; padding-top:8px; border-top:1px dashed var(--line)}
.modal .summary .items .li{display:flex; justify-content:space-between; padding:2px 0; font-family:var(--mono); font-size:12px; gap:10px}
.modal .summary .tot{margin-top:8px; padding-top:8px; border-top:1px solid var(--line); display:flex; justify-content:space-between; font-weight:800}
.modal .acts{padding:18px 22px 22px; display:flex; flex-direction:column; gap:10px}
.modal .acts .btn-line{width:100%; padding:14px}
.modal .acts .again{text-align:center; font-size:13px; color:var(--ink-faint); cursor:pointer; padding:4px}
.modal .acts .again:hover{color:var(--accent)}

footer{background:var(--surface); border-top:1px solid var(--line); padding:44px 0 30px; margin-top:8px}
.foot-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:28px}
.foot-grid .col b{color:var(--ink); display:block; margin-bottom:10px; font-size:15px}
.foot-grid .col a,.foot-grid .col p{display:block; color:var(--ink-soft); padding:3px 0; font-size:14px}
.foot-grid .col a{cursor:pointer} .foot-grid .col a:hover{color:var(--accent)}
.foot-contact .li{display:flex; gap:9px; align-items:center; padding:4px 0; font-size:14px; color:var(--ink-soft)}
.foot-contact .li svg{width:16px;height:16px;color:var(--accent);flex:none}
.foot-bottom{margin-top:28px; padding-top:18px; border-top:1px solid var(--line); font-size:13px; color:var(--ink-faint); text-align:center}
@media(max-width:820px){ .foot-grid{grid-template-columns:1fr 1fr} }
@media(max-width:520px){ .foot-grid{grid-template-columns:1fr} }

.theme-btn{width:44px;height:44px;border-radius:11px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--ink-soft)}
.theme-btn:hover{color:var(--accent);border-color:var(--accent)} .theme-btn svg{width:19px;height:19px}
.toast{position:fixed; bottom:24px; left:50%; transform:translateX(-50%) translateY(20px); background:var(--ink); color:var(--bg); padding:12px 22px; border-radius:999px; font-size:14px; font-weight:600; z-index:80; opacity:0; pointer-events:none; transition:.25s; box-shadow:var(--shadow-lg)}
.toast.show{opacity:1; transform:translateX(-50%) translateY(0)}
.sticky-line{position:fixed; right:20px; bottom:20px; z-index:45}
.sticky-line .btn-line{box-shadow:var(--shadow-lg); padding:14px 20px; border-radius:999px}

/* ============================================================
   หน้า Landing / บทความ (SEO + AEO)  — ใช้ร่วมกันทุกหน้าเนื้อหา
   ============================================================ */
.lp .brand{text-decoration:none; color:inherit}
.lp .lead{color:var(--ink-soft); font-size:17px; line-height:1.8; max-width:66ch; margin:0 0 4px}

/* กล่องคำตอบสั้น (ให้ AI ดึงไปตอบ) */
.answer{background:var(--tint); border:1px solid var(--line); border-left:4px solid var(--accent);
  border-radius:12px; padding:15px 18px; margin:16px 0 22px}
.answer .lab{font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--accent-deep); font-weight:700; margin-bottom:5px}
.answer p{margin:0; color:var(--ink); font-size:16.5px; line-height:1.7}

/* ตารางเนื้อหา */
.ctable-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:12px;
  box-shadow:var(--shadow); background:var(--surface); margin:16px 0}
.ctable{border-collapse:collapse; width:100%; min-width:520px; font-size:15px}
.ctable th,.ctable td{text-align:left; padding:11px 14px; border-bottom:1px solid var(--line); vertical-align:top}
.ctable thead th{background:var(--surface-2); font-size:12.5px; font-weight:700; color:var(--ink);
  letter-spacing:.02em; text-transform:uppercase}
.ctable tbody tr:last-child td{border-bottom:none}
.ctable tbody tr:hover{background:var(--surface-3)}
.ctable .num{font-variant-numeric:tabular-nums; white-space:nowrap}
.ctable caption{caption-side:bottom; text-align:left; color:var(--ink-faint); font-size:12.5px; padding:9px 4px 0}

/* ลิสต์ในเนื้อหา */
.seo-content ul,.seo-content ol{color:var(--ink-soft); font-size:16px; line-height:1.8; padding-left:22px; margin:8px 0 16px}
.seo-content li{margin:5px 0}
.seo-content li strong{color:var(--ink); font-weight:700}
.seo-content h3{font-size:17px; margin:22px 0 6px; color:var(--ink)}

/* การ์ดจุดขาย/คุณสมบัติ */
.lp-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px; margin:18px 0}
.lp-card{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:18px 20px; box-shadow:var(--shadow)}
.lp-card .ic{width:38px; height:38px; border-radius:10px; background:var(--tint); color:var(--accent-deep);
  display:grid; place-items:center; margin-bottom:10px}
.lp-card .ic svg{width:20px; height:20px}
.lp-card b{display:block; font-size:16px; margin-bottom:3px}
.lp-card span{color:var(--ink-soft); font-size:14.5px; line-height:1.6}

/* แถบ CTA ปิดการขาย */
.cta-band{background:var(--grad); color:#fff; border-radius:18px; padding:28px 26px; margin:30px 0 10px;
  display:flex; flex-wrap:wrap; align-items:center; gap:16px 22px; box-shadow:var(--shadow-lg)}
.cta-band .cb-txt{flex:1; min-width:240px}
.cta-band h2{color:#fff; font-size:clamp(20px,3vw,26px); margin:0 0 6px}
.cta-band p{color:rgba(255,255,255,.92); margin:0; font-size:15.5px}
.cta-band .cb-acts{display:flex; flex-wrap:wrap; gap:10px}
.cta-band .btn{background:#fff; color:var(--accent-deep)}
.cta-band .btn.phone{background:rgba(255,255,255,.16); color:#fff; border:1px solid rgba(255,255,255,.5)}

/* หัวข้อหน้า Landing (แถบเขียวอ่อน) */
.lp-hero{background:var(--surface); border-bottom:1px solid var(--line)}
.lp-hero .wrap{padding:30px 0 26px}
.lp-hero h1{font-size:clamp(24px,4vw,36px); margin:8px 0 12px; line-height:1.2}

@media (max-width:860px){ .cta-band{padding:22px 20px} }