:root{--green:#0f8a4b;--green-d:#0a5f34;--green-l:#e7f6ee;--gold:#f5b301;--gold-l:#fff4d6;--red:#e53935;--ink:#14231b;--muted:#5b6b62;--line:#dfe7e2;--bg:#f7faf8;--card:#fff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Sarabun',sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
h1,h2,h3,h4,.brand,.btn,.tag,.price{font-family:'Prompt',sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
/* nav */
.nav{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.08rem;color:var(--green-d);white-space:nowrap}
.brand small{display:block;font-weight:600;font-size:.7rem;color:var(--muted);margin-top:-4px}
.badge{width:38px;height:38px;border-radius:50%;background:var(--green);display:grid;place-items:center;box-shadow:0 0 0 3px var(--green-l);flex:0 0 38px}
.badge svg{width:20px;height:20px}
.nav .links{display:flex;gap:18px;margin-left:auto;font-family:'Prompt';font-size:.92rem;align-items:center}
.nav .links a{color:var(--muted)}.nav .links a:hover{color:var(--green)}
.cartbtn{position:relative;display:inline-flex;align-items:center;gap:6px;background:var(--green);color:#fff!important;border-radius:999px;padding:8px 14px;font-weight:600}
.cartbtn b{background:var(--gold);color:#3a2a00;border-radius:999px;min-width:22px;height:22px;display:inline-grid;place-items:center;font-size:.8rem;padding:0 6px}
@media(max-width:760px){.nav .links a.hide-m{display:none}.brand small{display:none}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;border:2px solid transparent;cursor:pointer;font-size:1rem;transition:.15s;text-align:center}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-g{background:var(--green);color:#fff}.btn-g:hover{background:var(--green-d)}
.btn-y{background:var(--gold);color:#3a2a00}.btn-y:hover{filter:brightness(.95)}
.btn-o{background:#fff;border-color:var(--line);color:var(--ink)}.btn-o:hover{border-color:var(--green)}
.btn-fb{background:#1877f2;color:#fff}
.btn-sm{padding:7px 14px;font-size:.88rem}
.btn-block{width:100%}
/* cards */
.card{background:var(--card);border-radius:18px;padding:18px;box-shadow:0 4px 18px rgba(10,60,30,.06)}
.tag{display:inline-block;font-size:.75rem;border-radius:999px;padding:2px 10px;background:var(--green-l);color:var(--green-d);font-weight:600}
.tag.gold{background:var(--gold-l);color:#8a6200}.tag.red{background:#fdecea;color:#c62828}
.muted{color:var(--muted)}
.sec{padding:34px 0}
.sec h2{font-size:1.45rem;margin-bottom:4px}
.sec .lead{color:var(--muted);margin-bottom:18px}
/* product grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
@media(max-width:520px){.grid{grid-template-columns:repeat(2,1fr);gap:10px}}
.pc{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 16px rgba(10,60,30,.07);display:flex;flex-direction:column;position:relative;transition:.15s}
.pc:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(10,60,30,.12)}
.pc .im{aspect-ratio:4/5;background:#eef3f0;overflow:hidden}
.pc .im img{width:100%;height:100%;object-fit:contain;background:#eef3f0}
.pc .bd{padding:12px 12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.pc h3{font-size:.98rem;line-height:1.35;font-weight:600}
.pc .sub{font-size:.82rem;color:var(--muted);line-height:1.4}
.pc .row{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-top:auto}
.price{font-weight:800;color:var(--green-d);font-size:1.15rem}
.price s{color:#9aa7a0;font-weight:400;font-size:.85rem;margin-left:4px}
.pc .rib{position:absolute;top:10px;left:10px;background:var(--red);color:#fff;font:700 .75rem 'Prompt';border-radius:999px;padding:3px 10px;z-index:2}
.pc .rib.free{background:var(--green)}
.addb{border:0;background:var(--gold);color:#3a2a00;border-radius:999px;padding:6px 12px;font:700 .85rem 'Prompt';cursor:pointer;white-space:nowrap}
.addb.in{background:var(--green-l);color:var(--green-d)}
@media(max-width:520px){.pc h3{font-size:.9rem}.price{font-size:1rem}.addb{padding:5px 9px;font-size:.78rem}}
/* chips */
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;margin-bottom:16px}
.chips::-webkit-scrollbar{display:none}
.chips button{flex:0 0 auto;border:2px solid var(--line);background:#fff;border-radius:999px;padding:7px 15px;font:600 .9rem 'Prompt';cursor:pointer;color:var(--ink)}
.chips button.on{background:var(--green);border-color:var(--green);color:#fff}
/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:#14231b;color:#fff;padding:10px 18px;border-radius:999px;font-family:'Prompt';font-size:.92rem;opacity:0;transition:.25s;z-index:90;pointer-events:none;max-width:calc(100vw - 32px);text-align:center}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
/* footer */
footer{background:#0d2a1b;color:#cfe3d8;padding:32px 0 26px;margin-top:40px;font-size:.92rem}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
footer h4{color:#fff;margin-bottom:8px;font-size:1rem}
footer a{display:block;color:#cfe3d8;margin:3px 0}footer a:hover{color:#fff}
footer .copy{border-top:1px solid rgba(255,255,255,.1);margin-top:22px;padding-top:14px;font-size:.82rem;color:#8fb3a0}
@media(max-width:720px){footer .cols{grid-template-columns:1fr}}
/* forms */
.f label{display:block;font:600 .9rem 'Prompt';margin:12px 0 4px}
.f input,.f textarea,.f select{width:100%;border:2px solid var(--line);border-radius:12px;padding:10px 12px;font-size:1rem;font-family:'Sarabun';background:#fff}
.f input:focus,.f textarea:focus{outline:none;border-color:var(--green)}
.f .hint{font-size:.82rem;color:var(--muted);margin-top:3px}
.err{color:#c62828;font-size:.92rem;min-height:1.2em;margin-top:8px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.step{background:#fff;border-radius:16px;padding:16px;text-align:center;box-shadow:0 4px 14px rgba(10,60,30,.05)}
.step .n{width:40px;height:40px;border-radius:50%;background:var(--green-l);color:var(--green-d);font:800 1.1rem 'Prompt';display:grid;place-items:center;margin:0 auto 8px}
.step b{font-family:'Prompt';display:block}
.step span{font-size:.85rem;color:var(--muted)}
@media(max-width:720px){.steps{grid-template-columns:repeat(2,1fr)}}