:root{--blue:#1d4ed8;--blue-d:#1e3a8a;--ink:#111827;--mut:#6b7280;--line:#e5e7eb;--bg:#f8fafc;--card:#fff;--ok:#16a34a;--warn:#d97706;--bad:#dc2626}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Thai",sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--blue)}
img,svg{max-width:100%}
.container{width:min(1120px,100% - 32px);margin-inline:auto}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}
.test-bar{background:#fef3c7;color:#92400e;font-size:13px;text-align:center;padding:6px 12px}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:12px}
.brand{font-weight:800;font-size:22px;text-decoration:none;color:var(--ink);letter-spacing:-.5px}.brand b{color:var(--blue)}
.nav{display:flex;gap:20px}.nav a{text-decoration:none;color:var(--ink);font-weight:600}.nav a:hover{color:var(--blue)}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 12px;font:inherit;font-weight:600}
@media(max-width:720px){.nav-toggle{display:block}.nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 16px}.nav.open{display:flex}.nav a{padding:12px 0}}
.hero{background:linear-gradient(135deg,var(--blue-d),var(--blue));color:#fff;padding:48px 0 56px}
.hero h1{font-size:clamp(28px,5vw,44px);line-height:1.15;margin:0 0 8px}
.hero p{margin:0 0 24px;opacity:.9;font-size:18px}
.search{background:#fff;color:var(--ink);border-radius:12px;padding:16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;align-items:end}
label{display:block;font-size:13px;font-weight:600;color:var(--mut);margin-bottom:4px}
select,input{width:100%;font:inherit;padding:10px 12px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:var(--ink)}
.btn{display:inline-block;border:0;border-radius:8px;padding:11px 18px;font:inherit;font-weight:700;background:var(--blue);color:#fff;text-decoration:none;cursor:pointer;text-align:center}
.btn:hover{background:var(--blue-d)}.btn.alt{background:#fff;color:var(--blue);border:1px solid var(--blue)}.btn[disabled],.btn.off{background:#9ca3af;pointer-events:none}
section{padding:36px 0}
h2{font-size:26px;margin:0 0 16px}
.page-head{padding:28px 0 8px}.page-head h1{margin:0 0 4px;font-size:32px}.page-head p{color:var(--mut);margin:0}
.crumb{font-size:14px;color:var(--mut)}.crumb a{color:var(--mut)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-2px)}
.card .pic{background:#eef2f7;position:relative}.card .pic svg{display:block;width:100%;height:auto}
.badge{position:absolute;left:10px;top:10px;font-size:12px;font-weight:700;padding:3px 9px;border-radius:99px;background:var(--ok);color:#fff}
.badge.used{background:var(--warn)}.badge.sold{background:var(--bad);left:auto;right:10px}.badge.res{background:#6b7280;left:auto;right:10px}
.card .body{padding:14px;display:flex;flex-direction:column;gap:4px}
.card h3{margin:0;font-size:17px}.price{font-weight:800;font-size:20px;color:var(--blue)}
.meta{color:var(--mut);font-size:14px}
.chips{display:flex;flex-wrap:wrap;gap:10px}.chip{background:#fff;border:1px solid var(--line);border-radius:99px;padding:8px 16px;text-decoration:none;color:var(--ink);font-weight:600}.chip:hover{border-color:var(--blue);color:var(--blue)}
.filters{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:12px 0 20px}
.count{color:var(--mut);margin:0 0 12px}
.empty{padding:40px;text-align:center;color:var(--mut);background:#fff;border:1px dashed #cbd5e1;border-radius:12px}
.detail{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:start}
@media(max-width:820px){.detail{grid-template-columns:1fr}}
.detail .pic{background:#eef2f7;border-radius:12px;overflow:hidden;position:relative}.detail .pic svg{display:block;width:100%;height:auto}
.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.panel+.panel{margin-top:16px}
.specs{width:100%;border-collapse:collapse}.specs th,.specs td{text-align:left;padding:8px 0;border-bottom:1px solid var(--line);font-size:15px}.specs th{color:var(--mut);font-weight:600;width:42%}
.feat{columns:2;padding-left:18px;margin:0}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}
.form{display:grid;gap:10px}
.note{font-size:13px;color:var(--mut)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.step b{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;margin-bottom:8px}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px}summary{cursor:pointer;font-weight:700}
.result{font-size:28px;font-weight:800;color:var(--blue)}
.site-footer{background:#0f172a;color:#cbd5e1;margin-top:40px;padding-top:32px}.site-footer a{color:#cbd5e1;display:block;text-decoration:none;padding:3px 0}.site-footer a:hover{color:#fff}.site-footer .brand{color:#fff;display:inline-block}.site-footer .brand b{color:#93c5fd}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}@media(max-width:620px){.foot{grid-template-columns:1fr}}
.copy{border-top:1px solid #1e293b;margin-top:24px;padding:16px 0;font-size:13px}
.narrow{max-width:760px}