:root{
  --green:#1B5E3F;--green-2:#2E7D55;--leaf:#3FA86B;--leaf-soft:#E3F2E9;
  --cream:#FAF8F2;--paper:#FFFFFF;--ink:#1E2A24;--muted:#5C6B63;--line:#E4E1D8;
  --amber:#F2B33D;--amber-ink:#5A3D00;--rain:#4A7FB5;
  --r:14px;--sh:0 10px 30px rgba(27,94,63,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Sarabun",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.65;color:var(--ink);background:var(--cream)}
h1,h2,h3{font-family:"Prompt","Sarabun",sans-serif;line-height:1.25;margin:0 0 .4em;color:var(--green)}
h1{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:600}
h3{font-size:1.15rem;font-weight:600;color:var(--ink)}
p{margin:0 0 .8em}
img{max-width:100%;height:auto;display:block}
a{color:var(--green-2)}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.wrap--narrow{max-width:800px}
.fine{font-size:.85rem;color:var(--muted)}
.fine--light{color:rgba(255,255,255,.7)}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(250,248,242,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav__in{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--green)}
.brand__mark{width:38px;height:38px;border-radius:10px;background:var(--green);color:#fff;font:700 14px/38px "Prompt",sans-serif;text-align:center;letter-spacing:.5px}
.brand__name{font:600 1.05rem/1.05 "Prompt",sans-serif;display:flex;flex-direction:column}
.brand__name small{font:500 .7rem/1 "Sarabun",sans-serif;color:var(--muted);margin-top:3px;letter-spacing:.5px}
.nav__links{display:none;gap:22px;margin-left:12px}
.nav__links a{text-decoration:none;color:var(--ink);font-weight:500}
.nav__links a:hover{color:var(--green)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:12px}
.lang{font-size:.9rem;font-weight:600;text-decoration:none;border:1px solid var(--line);padding:6px 10px;border-radius:999px;background:#fff;color:var(--ink)}
@media(min-width:900px){.nav__links{display:flex}}

/* buttons */
.btn{display:inline-block;background:var(--green);color:#fff;text-decoration:none;font:600 1rem "Prompt",sans-serif;padding:12px 22px;border-radius:999px;border:2px solid var(--green);cursor:pointer;transition:.15s;white-space:nowrap}
.btn:hover{background:var(--green-2);border-color:var(--green-2)}
.btn--sm{padding:8px 16px;font-size:.9rem}
.btn--lg{padding:15px 28px;font-size:1.08rem}
.btn--full{width:100%;text-align:center}
.btn--ghost{background:transparent;color:var(--green)}
.btn--ghost:hover{background:var(--leaf-soft)}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn--ghost-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn--line{background:#06C755;border-color:#06C755}
.btn--line:hover{background:#05b04c;border-color:#05b04c}
.btn--msgr{background:#0084FF;border-color:#0084FF}
.btn--msgr:hover{background:#0072db;border-color:#0072db}
.btn[disabled]{opacity:.6;cursor:wait}

/* hero */
.hero{padding:44px 0 56px;background:linear-gradient(180deg,#fff 0%,var(--cream) 100%)}
.hero__grid{display:grid;gap:28px;align-items:center}
.badge{display:inline-block;background:var(--amber);color:var(--amber-ink);font-weight:700;font-size:.92rem;padding:8px 14px;border-radius:10px;margin:0 0 18px}
.kicker{font-family:"Prompt",sans-serif;font-weight:600;color:var(--leaf);letter-spacing:.3px;margin-bottom:8px}
.lead{font-size:1.12rem;color:var(--muted);max-width:34em}
.lead strong{color:var(--ink)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 12px}
.hero__note{font-size:.9rem;color:var(--muted)}
.hero__img{margin:0;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
@media(min-width:760px){.hero__grid{grid-template-columns:1.1fr .9fr}.hero{padding:64px 0 76px}}

/* sections */
.sec{padding:64px 0}
.sec--alt{background:#fff}
.sec--dark{background:var(--green);color:#fff}
.sec--dark h2,.sec--dark h3{color:#fff}
.sec--dark .sec__sub{color:rgba(255,255,255,.8)}
.sec__sub{font-size:1.08rem;color:var(--muted);max-width:40em;margin-bottom:28px}
.cards{display:grid;gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card--hi{background:var(--leaf-soft);border-color:#CDE7D7}
.card__ico{font-size:1.7rem;display:block;margin-bottom:8px}
.card p{margin:0;color:var(--muted)}
@media(min-width:700px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.cards{grid-template-columns:repeat(3,1fr)}.card--hi{grid-column:span 1}}

/* compare */
.compare{display:grid;gap:28px;align-items:center}
.compare__img{margin:0;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.compare__cap{font-weight:600}
@media(min-width:760px){.compare{grid-template-columns:.85fr 1.15fr}}

/* price */
.prices{display:grid;gap:18px;margin-bottom:28px}
.price{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative}
.price--hot{border:2px solid var(--amber);background:#FFFBF0}
.price__badge{position:absolute;top:-14px;left:20px;background:var(--amber);color:var(--amber-ink);font-weight:700;font-size:.85rem;padding:4px 12px;border-radius:999px;margin:0}
.price__label{font-family:"Prompt",sans-serif;font-weight:600;color:var(--muted);margin:0 0 6px}
.price__num{font:700 clamp(2rem,5vw,2.8rem)/1.1 "Prompt",sans-serif;color:var(--green);margin:0 0 8px}
.price__num span{font-size:1rem;font-weight:500;color:var(--muted);margin-left:8px}
.price__desc{margin:0;color:var(--muted)}
@media(min-width:700px){.prices{grid-template-columns:1fr 1fr}}
.free{background:var(--leaf-soft);border-radius:var(--r);padding:24px}
.free h3{color:var(--green)}
.free p{margin:0 0 6px}
.free__types{font-weight:600}

/* steps */
.steps{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:16px;counter-reset:s}
.steps li{background:var(--cream);border-radius:var(--r);padding:22px;position:relative}
.steps__n{display:inline-block;width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;font:700 1rem/34px "Prompt",sans-serif;text-align:center;margin-bottom:10px}
.steps p{margin:0;color:var(--muted)}
@media(min-width:700px){.steps{grid-template-columns:repeat(3,1fr)}}
.how__img{margin:0 0 28px;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);max-width:520px}
.how__img img{aspect-ratio:4/3;object-fit:cover;object-position:center 30%;width:100%}
.area{border-top:1px solid var(--line);padding-top:22px}
.area p{margin:0 0 6px}

/* faq */
.faq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font:600 1.02rem "Prompt",sans-serif;padding:16px 0;list-style:none;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:1.4rem;color:var(--leaf)}
.faq[open] summary::after{content:"–"}
.faq p{margin:0 0 16px;color:var(--muted)}

/* contact */
.contact{display:grid;gap:32px}
.contact__tip{background:rgba(255,255,255,.1);padding:12px 14px;border-radius:10px}
.contact__btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.form{background:#fff;color:var(--ink);border-radius:var(--r);padding:24px;display:grid;gap:14px;box-shadow:var(--sh)}
.form label{display:grid;gap:6px;font-weight:600;font-size:.95rem}
.form input,.form textarea{font:inherit;padding:11px 12px;border:1px solid #CFCBC0;border-radius:10px;background:#FBFAF7;width:100%}
.form input:focus,.form textarea:focus{outline:2px solid var(--leaf);border-color:var(--leaf)}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.form__msg{margin:0;font-weight:600;min-height:1.4em}
.form__msg.is-ok{color:var(--green)}
.form__msg.is-err{color:#B3261E}
.form .fine{margin:0}
@media(min-width:800px){.contact{grid-template-columns:1fr 1fr}}

/* footer */
.foot{padding:30px 0 90px;font-size:.9rem;color:var(--muted)}
.foot__in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
.foot__lang a{color:var(--muted)}

/* sticky mobile cta */
.sticky-cta{position:fixed;left:16px;right:16px;bottom:16px;z-index:30;background:var(--green);color:#fff;text-align:center;text-decoration:none;font:600 1.05rem "Prompt",sans-serif;padding:14px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.25)}
@media(min-width:760px){.sticky-cta{display:none}.foot{padding-bottom:40px}}

/* seasons */
.card--season{background:#fff;border-left:4px solid var(--leaf)}
.card--season h3{font-size:1.05rem;color:var(--green)}
@media(min-width:1000px){.cards--4{grid-template-columns:repeat(4,1fr)}}