:root{--navy:#0b2a63;--blue:#0a66c2;--sky:#e9f2fd;--ink:#14213d;--muted:#5a6a85;--line:#e3e9f2;--bg:#f7f9fc;--card:#fff;--orange:#f08a24;--orange-d:#d9731a;--green:#14a05a;--r:16px}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:'IBM Plex Sans Thai','Noto Sans Thai',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:17px}
h1,h2,h3,.brand{font-family:'Kanit','IBM Plex Sans Thai',sans-serif;line-height:1.3;font-weight:600}
a{color:var(--blue)}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
/* header */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--navy);text-decoration:none;font-size:19px}
.brand img{width:34px;height:34px;border-radius:9px}
.brand small{display:block;font-family:'IBM Plex Sans Thai',sans-serif;font-weight:400;font-size:12px;color:var(--muted);line-height:1.2}
.menu{display:flex;align-items:center;gap:18px;font-size:15px}
.menu a{color:var(--ink);text-decoration:none}
.menu a:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;font-weight:600;text-decoration:none;font-size:16px;border:0;cursor:pointer;font-family:inherit}
.btn-o{background:var(--orange);color:#fff}
.btn-o:hover{background:var(--orange-d)}
.btn-l{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn-s{min-height:40px;padding:0 14px;font-size:15px}
.menu .hide-m{display:inline}
@media(max-width:760px){.menu .hide-m{display:none}.menu{gap:10px}}
@media(max-width:360px){.brand small{display:none}.brand{font-size:17px}.btn-s{padding:0 10px;font-size:14px}}
/* sections */
.hero{background:linear-gradient(160deg,#0b2a63 0%,#0a66c2 100%);color:#fff;padding:52px 0 0;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:end}
.hero h1{font-size:40px;margin-bottom:16px}
.hero h1 em{font-style:normal;color:#ffc27a}
.hero p.lead{font-size:19px;color:#dce8ff;margin-bottom:22px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}
.hero .note{font-size:14px;color:#b9cff5;margin-bottom:36px}
.hero .shot{align-self:end;max-width:400px;margin:0 auto;border-radius:22px 22px 0 0;overflow:hidden;box-shadow:0 -10px 40px rgba(0,0,0,.25)}
/* จอคอม: ข้อความอยู่กลางแนวตั้ง ภาพมือถือตัดความสูงไว้ ไม่ให้ hero สูงจนข้อความไปกองด้านล่าง */
@media(min-width:861px){.hero{padding-top:44px}.hero .wrap>div:first-child{align-self:center;padding-bottom:44px}.hero .shot{max-height:470px}.hero .shot img{width:100%;height:470px;object-fit:cover;object-position:top}}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero h1{font-size:31px}.hero p.lead{font-size:17px}.hero .shot{max-width:320px}}
section.s{padding:56px 0}
section.s.alt{background:#fff}
.s h2{font-size:30px;margin-bottom:12px}
.s .sub{color:var(--muted);margin-bottom:28px;max-width:720px}
@media(max-width:760px){section.s{padding:42px 0}.s h2{font-size:25px}}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:860px){.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.card h3{font-size:19px;margin-bottom:6px}
.card p{color:var(--muted);font-size:16px}
/* ข้อความแชตต้นเดือน */
.chat{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.chat{grid-template-columns:1fr}}
.cv{background:#fff;border-radius:20px;padding:18px;border:1px solid var(--line)}
.cv h3{font-size:18px;margin-bottom:12px}
.bub{max-width:88%;padding:9px 13px;border-radius:16px;font-size:15px;line-height:1.55;margin-bottom:8px}
.bub.t{background:#eef1f5;border-bottom-left-radius:4px}
.bub.o{background:#dcf3e4;margin-left:auto;border-bottom-right-radius:4px}
.bub small{display:block;font-size:12px;color:#6b7280}
.cv .now{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);font-size:15px}
.cv .now b{color:var(--orange-d)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.step figure{background:var(--sky);padding:16px 16px 0}
.step figure img{border-radius:14px 14px 0 0;box-shadow:0 6px 18px rgba(10,40,90,.15);max-height:360px;width:auto;margin:0 auto}
.step .t{padding:14px 16px 18px}
.step .t h3{font-size:18px}
.step .t h3::before{counter-increment:st;content:counter(st);display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--orange);color:#fff;font-size:14px;margin-right:8px;vertical-align:2px}
.step .t p{font-size:15px;color:var(--muted)}
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 22px}
@media(max-width:760px){.feat{grid-template-columns:1fr 1fr}}
@media(max-width:420px){.feat{grid-template-columns:1fr}}
.feat li{list-style:none;padding:8px 0 8px 28px;position:relative;font-size:16px;border-bottom:1px dashed var(--line)}
.feat li::before{content:"";position:absolute;left:4px;top:15px;width:12px;height:7px;border-left:2.5px solid var(--green);border-bottom:2.5px solid var(--green);transform:rotate(-45deg)}
.apps{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:700px){.apps{grid-template-columns:1fr}}
.app{display:flex;gap:16px;align-items:flex-start}
.app img{width:64px;height:64px;border-radius:15px;flex:none;box-shadow:0 6px 14px rgba(10,40,90,.2)}
.app h3{font-size:19px}
.app p{font-size:15px;color:var(--muted);margin-bottom:10px}
.store{display:flex;flex-wrap:wrap;gap:8px}
.store a{display:inline-flex;align-items:center;gap:6px;background:#111;color:#fff;text-decoration:none;border-radius:10px;padding:7px 12px;font-size:14px;min-height:40px}
.price{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:860px){.price{grid-template-columns:1fr 1fr}}
.price .card{text-align:center}
.price .amt{font-family:'Kanit',sans-serif;font-size:30px;color:var(--navy);font-weight:600}
.price .per{font-size:14px;color:var(--muted)}
.price .best{border:2px solid var(--orange);position:relative}
.price .best::after{content:"คุ้มสุด";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--orange);color:#fff;font-size:13px;padding:2px 12px;border-radius:99px}
.cta-box{background:linear-gradient(140deg,#0b2a63,#0a66c2);color:#fff;border-radius:22px;padding:34px 28px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-box h2{font-size:26px;margin:0 0 4px}
.cta-box p{color:#dce8ff}
.tools{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
@media(max-width:860px){.tools{grid-template-columns:1fr}}
.tools a.card{text-decoration:none;color:inherit;display:block}
.tools a.card:hover{border-color:var(--blue)}
.tools .go{color:var(--blue);font-weight:600;font-size:15px;margin-top:8px;display:block}
/* article pages */
.page-head{background:#fff;border-bottom:1px solid var(--line);padding:30px 0 24px}
.crumb{font-size:14px;color:var(--muted);margin-bottom:8px}
.crumb a{color:var(--muted)}
.page-head h1{font-size:32px}
.page-head p{color:var(--muted);margin-top:8px}
@media(max-width:760px){.page-head h1{font-size:26px}}
.prose{padding-top:34px;padding-bottom:50px}
.prose h2{font-size:24px;margin:34px 0 10px}
.prose h3{font-size:19px;margin:22px 0 6px}
.prose p{margin-bottom:14px}
.prose ul,.prose ol{margin:0 0 16px 24px}
.prose li{margin-bottom:6px}
.prose table{width:100%;border-collapse:collapse;margin:8px 0 20px;font-size:15px;background:#fff}
.prose th,.prose td{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}
.prose th{background:var(--sky);font-weight:600}
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tip{background:#fff7ec;border:1px solid #f6d7b0;border-radius:12px;padding:14px 16px;margin:16px 0;font-size:16px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0 16px}
.faq summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;position:relative;padding-right:26px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:10px;font-size:22px;color:var(--blue)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 14px;color:#334}
/* checklist */
.chk{list-style:none;margin:0 0 20px!important}
.chk li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:8px;display:flex;gap:12px;align-items:flex-start}
.chk input{width:22px;height:22px;flex:none;margin-top:3px;accent-color:var(--green)}
.chk label{cursor:pointer}
.chk label small{display:block;color:var(--muted);font-size:14px}
.score{position:sticky;bottom:12px;background:var(--navy);color:#fff;border-radius:14px;padding:12px 16px;display:flex;justify-content:space-between;align-items:center;gap:10px;box-shadow:0 10px 24px rgba(10,40,90,.3);z-index:5}
.score b{font-family:'Kanit',sans-serif;font-size:20px}
/* calculator */
.calc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin:6px 0 26px}
.calc fieldset{border:0;margin-bottom:16px}
.calc legend{font-family:'Kanit',sans-serif;font-weight:600;font-size:19px;margin-bottom:8px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
@media(max-width:420px){.row{grid-template-columns:1fr}}
.calc label{display:block;font-size:14px;color:var(--muted);margin-bottom:4px}
.calc input,.calc select{width:100%;min-height:46px;border:1.5px solid var(--line);border-radius:10px;padding:8px 12px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
.calc input:focus,.calc select:focus{outline:2px solid #9cc4f0;border-color:var(--blue)}
.calc .hint{font-size:14px;color:var(--muted);margin-top:-2px;margin-bottom:8px}
.tabs{display:flex;gap:8px;margin-bottom:14px}
.tabs button{flex:1;min-height:44px;border-radius:10px;border:1.5px solid var(--line);background:#fff;font-family:inherit;font-size:16px;cursor:pointer;color:var(--ink)}
.tabs button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.result{background:var(--sky);border-radius:14px;padding:16px;margin-top:10px}
.result .line{display:flex;justify-content:space-between;gap:10px;padding:5px 0;border-bottom:1px dashed #c9dbf3;font-size:16px}
.result .line:last-child{border-bottom:0}
.result .total{font-family:'Kanit',sans-serif;font-size:24px;color:var(--navy)}
.result .how{font-size:14px;color:var(--muted)}
.hidden{display:none!important}
/* footer */
footer{background:#0b1d42;color:#b8c6e0;padding:36px 0 26px;font-size:15px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
@media(max-width:760px){footer .cols{grid-template-columns:1fr}}
footer h4{color:#fff;font-family:'Kanit',sans-serif;font-weight:600;font-size:16px;margin-bottom:8px}
footer a{color:#dbe6fa;text-decoration:none;display:block;padding:3px 0}
footer .copy{border-top:1px solid #23365f;margin-top:22px;padding-top:14px;font-size:13px;color:#8fa2c7}
@media print{.top,footer,.score,.cta-box,.noprint{display:none!important}body{background:#fff}.calc,.chk li{border-color:#999}}
.tbl table{min-width:560px}
/* ใบแจ้งค่าเช่า (หน้าคำนวณ) */
.calc textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:8px 12px;font-size:16px;font-family:inherit;resize:vertical;margin-bottom:6px}
.calc legend .keep{display:block;font-family:'IBM Plex Sans Thai',sans-serif;font-weight:400;font-size:13px;color:var(--muted)}
.xrow{display:grid;grid-template-columns:118px 1fr 110px 44px;gap:8px;margin-bottom:8px}
.xrow .xdel{min-height:46px;border:1.5px solid var(--line);border-radius:10px;background:#fff;font-size:22px;color:#b42318;cursor:pointer}
@media(max-width:520px){.xrow{grid-template-columns:1fr 1fr 44px}.xrow .xd{grid-column:1/-1;grid-row:1}}
.inv{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 30px -18px rgba(10,40,90,.35);max-width:560px}
.inv-err{background:#fff1f0;color:#b42318;font-size:15px;padding:10px 16px}
.inv-head{background:var(--navy);color:#fff;padding:18px 20px}
.inv-dorm{font-family:'Kanit',sans-serif;font-weight:600;font-size:22px;line-height:1.3;word-break:break-word}
.inv-ph{font-size:15px;color:#cfe0ff}
.inv-title{font-family:'Kanit',sans-serif;font-weight:600;font-size:19px;color:var(--navy);padding:16px 20px 4px}
.inv-meta{display:grid;grid-template-columns:1fr 1fr;gap:4px 16px;padding:0 20px 12px;border-bottom:1px solid var(--line);font-size:15px}
.inv-meta span{display:block;color:var(--muted);font-size:13px}
.inv-meta b{font-weight:600;word-break:break-word}
.inv-empty{padding:16px 20px;color:var(--muted);font-size:15px;margin:0!important}
.inv-tbl{width:100%;border-collapse:collapse;margin:0!important;background:#fff}
.inv-tbl td{border:0!important;border-bottom:1px solid #eef1f5!important;padding:10px 20px!important;font-size:16px;vertical-align:top}
.inv-tbl td:last-child{text-align:right;white-space:nowrap;font-weight:600}
.inv-tbl td small{display:block;color:#6b7280;font-size:13px}
.inv-tbl tr.disc td{color:var(--green)}
.inv-total{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--sky);margin:12px 16px;padding:12px 14px;border-radius:12px;color:var(--navy);font-weight:600}
.inv-total b{font-family:'Kanit',sans-serif;font-size:24px}
.inv-note{padding:4px 20px 12px;font-size:15px;color:#334155;word-break:break-word}
.inv-foot{padding:8px 20px 14px;font-size:12px;color:#94a3b8;text-align:center}
.acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
@media print{
  body.calc-page .top,body.calc-page footer,body.calc-page .page-head,body.calc-page main>section,body.calc-page .prose>:not(form),body.calc-page form>:not(#inv){display:none!important}
  body.calc-page .prose{padding:0}
  body.calc-page .calc{border:0;padding:0;margin:0}
  body.calc-page #inv{max-width:none;border:1px solid #999;box-shadow:none;break-inside:avoid}
  body.calc-page .inv-err{display:none}
  .inv-head{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .inv-total{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}
.imgbox{position:fixed;inset:0;background:rgba(10,20,40,.7);z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}
.imgbox-in{background:#fff;border-radius:16px;padding:14px;max-width:440px;width:100%;max-height:92vh;overflow:auto;text-align:center}
.imgbox-in p{font-size:14px;color:var(--muted);margin:0 0 10px!important}
.imgbox-in img{width:100%;border:1px solid var(--line);border-radius:8px;margin-bottom:10px}
@media(max-width:520px){.xrow select{padding:8px 4px;font-size:15px}}
@media print{.imgbox{display:none!important}}
/* เมนูมือถือ */
.burger{display:none;width:42px;height:42px;border-radius:10px;border:1.5px solid var(--line);background:#fff;color:var(--navy);align-items:center;justify-content:center;cursor:pointer}
.mnav{border-top:1px solid var(--line);background:#fff;padding:8px 20px 14px}
.mnav a{display:block;padding:12px 0;color:var(--ink);text-decoration:none;border-bottom:1px solid #f0f3f8;font-size:16px}
.mnav a:last-child{border-bottom:0}
.mnav .mnav-hot{color:var(--orange-d);font-weight:600}
.mnav .mnav-hot span{display:block;font-weight:400;font-size:13px;color:var(--muted)}
@media(max-width:760px){.burger{display:inline-flex}}
@media(min-width:761px){.mnav{display:none!important}}
/* ป้ายเครื่องมือฟรีใน hero + กล่องโปรโมต */
.pill{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);color:#fff;text-decoration:none;border-radius:99px;padding:6px 14px 6px 6px;font-size:14px;margin-bottom:16px;line-height:1.4}
.pill b{background:var(--orange);border-radius:99px;padding:2px 10px;font-weight:600}
.pill:hover{background:rgba(255,255,255,.22)}
section.s.free{padding-bottom:0}
.free-box{background:#fff8ef;border:1.5px solid #f6d7b0;border-radius:22px;padding:28px;display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center;overflow:hidden}
.free-box .tag{display:inline-block;background:var(--orange);color:#fff;border-radius:99px;padding:3px 12px;font-size:13px;font-weight:600;margin-bottom:10px}
.free-box h2{font-size:26px;margin-bottom:10px}
.free-box ul{margin:0 0 18px 20px;color:#334155}
.free-box li{margin-bottom:4px}
.free-img img{border-radius:14px;box-shadow:0 14px 34px -14px rgba(10,40,90,.4);max-width:300px;margin:0 auto}
@media(max-width:760px){.free-box{grid-template-columns:1fr;padding:22px}.free-box h2{font-size:22px}.free-img img{max-width:240px}}
@media(max-width:360px){.top .btn-s{padding:0 10px}.burger{width:40px;height:40px}}
.mnav .mnav-try{display:none;color:var(--orange-d);font-weight:600}
.brand span{white-space:nowrap}
@media(max-width:360px){.top .btn-o.btn-s{display:none}.mnav .mnav-try{display:block}}