/* Tutor Plus (sabaisite demo) - shared styles for all pages */
:root{--ink:#111827;--ink-2:#5b6478;--bg:#fff;--soft:#f4f6fb;--line:#e3e7f0;--navy:#0f1b3d;--blue:#2563eb;--blue-l:#e8efff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans Thai",Inter,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:100%;object-fit:cover}
.wrap{max-width:1160px;margin:0 auto;padding:0 32px}
h1,h2,h3{font-weight:600}
.nb{white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:500;font-size:15.5px;padding:12px 20px;border-radius:10px;background:var(--blue);color:#fff;border:0;white-space:nowrap;cursor:pointer}
.btn.w{background:#fff;color:var(--navy)}
.btn.ow{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
.btn:hover{filter:brightness(.95)}
.eyebrow{font-size:14.5px;font-weight:600;color:var(--blue)}

header.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line)}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px}
.brand{font-family:Inter,sans-serif;font-weight:600;font-size:21px;letter-spacing:-.02em;color:var(--navy)}
.brand span{color:var(--blue)}
.brand{flex:none}
.menu{display:flex;gap:30px;margin-left:auto;font-size:15px;color:var(--ink-2)}
.menu>a{display:flex;align-items:center;height:64px;border-bottom:2px solid transparent;padding-top:2px}
.menu>a:hover{color:var(--ink)}
.menu>a[aria-current="page"]{color:var(--ink);font-weight:500;border-bottom-color:var(--blue)}
.menu-cta{display:none}
.nav-r{display:flex;align-items:center;gap:8px}
header.nav .btn{padding:9px 16px;font-size:14.5px}
.burger{display:none;width:42px;height:42px;border-radius:10px;border:0;background:transparent;cursor:pointer;align-items:center;justify-content:center;margin-right:-8px}
.burger svg{width:24px;height:24px;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;fill:none}
.burger path{transition:transform .2s,opacity .2s;transform-origin:12px 12px}
.burger[aria-expanded="true"] .l1{transform:translateY(5px) rotate(45deg)}
.burger[aria-expanded="true"] .l2{opacity:0}
.burger[aria-expanded="true"] .l3{transform:translateY(-5px) rotate(-45deg)}

.hero{background:var(--navy);color:#fff;padding:60px 0 0;overflow:hidden}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#c7d5ff;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:5px 12px 5px 6px;border-radius:999px}
.pill b{font-family:Inter,sans-serif;font-size:12px;letter-spacing:.06em;background:var(--blue);color:#fff;padding:2px 8px;border-radius:999px}
.hero h1{font-size:66px;line-height:1.18;margin-top:20px}
.hero h1 mark{background:none;color:#93b4ff}
.hero .lead{font-size:19px;color:#c3cbe0;margin-top:18px;max-width:500px}
.hero .cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero .pic{position:relative;aspect-ratio:6/5;border-radius:24px;overflow:hidden}
.hero .float{position:absolute;left:18px;bottom:18px;right:18px;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);color:var(--ink);border-radius:16px;padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.hero .float span{font-size:14.5px;color:var(--ink-2)}
.hero .float b{font-family:Inter,sans-serif;font-size:30px;color:var(--blue);letter-spacing:-.02em}
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:52px;border-top:1px solid rgba(255,255,255,.14)}
.stats div{padding:22px 0 26px}
.stats div+div{padding-left:28px;border-left:1px solid rgba(255,255,255,.14)}
.stats b{display:block;font-family:Inter,"Noto Sans Thai",sans-serif;font-size:32px;font-weight:600}
.stats span{color:#aeb8d2;font-size:14.5px}

section{padding:100px 0}
.sh{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap}
.sh h2{font-size:44px;line-height:1.22;margin-top:8px}
.sh p{color:var(--ink-2);max-width:420px}
.sh p.eyebrow{color:var(--blue);max-width:none}

.chips{display:flex;gap:8px;margin-top:34px;flex-wrap:wrap}
.chips button{font:inherit;font-size:15px;padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);cursor:pointer}
.chips button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.courses{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
.course{border:1px solid var(--line);border-radius:20px;padding:28px;display:flex;flex-direction:column;background:#fff;transition:border-color .2s}
.course:hover{border-color:#b9c8f5}
.course[hidden]{display:none}
.course .cat{font-family:Inter,"Noto Sans Thai",sans-serif;font-size:12.5px;font-weight:600;letter-spacing:.06em;color:var(--blue)}
.course h3{font-size:22px;line-height:1.35;margin-top:8px}
.course p{color:var(--ink-2);font-size:15.5px;margin-top:8px;flex:1}
.course .tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:16px}
.course .tags span{font-size:13px;padding:3px 10px;border-radius:6px;background:var(--soft);color:var(--ink-2)}
.course .tags span.on{background:var(--blue-l);color:#1d4ed8}
.course .bottom{display:flex;justify-content:space-between;align-items:end;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.course .bottom small{display:block;font-size:13px;color:var(--ink-2)}
.course .bottom b{font-family:Inter,sans-serif;font-size:24px;font-weight:600}
.course .bottom a{color:var(--blue);font-weight:500;font-size:15px}
.course .bottom a:hover{text-decoration:underline}
.promo{margin-top:22px;background:var(--soft);border-radius:14px;padding:16px 22px;font-size:15.5px;color:var(--ink-2)}
.promo b{color:var(--ink)}

.why{background:var(--soft)}
.why .wrap{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.why .ph{aspect-ratio:4/5;border-radius:24px;overflow:hidden}
.why ol{list-style:none;margin-top:30px}
.why li{display:grid;grid-template-columns:56px 1fr;padding:20px 0;border-top:1px solid var(--line)}
.why li .n{font-family:Inter,sans-serif;font-weight:600;color:var(--blue);font-size:15px;padding-top:2px}
.why li b{font-weight:600;font-size:18px}
.why li p{color:var(--ink-2);font-size:15.5px;margin-top:2px}

.sum{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.sum div{border:1px solid var(--line);border-radius:18px;padding:24px 26px}
.sum b{display:block;font-family:Inter,"Noto Sans Thai",sans-serif;font-size:34px;font-weight:600;color:var(--navy)}
.sum span{color:var(--ink-2);font-size:15px}
.tbl{margin-top:20px;border:1px solid var(--line);border-radius:18px;overflow:hidden}
table{width:100%;border-collapse:collapse;font-size:16px}
th{text-align:left;font-weight:500;font-size:14px;color:var(--ink-2);background:var(--soft);padding:14px 24px}
td{padding:16px 24px;border-top:1px solid var(--line)}
td:first-child{font-weight:600}
td:last-child b{color:var(--navy);font-weight:600}
td .u{display:block;font-size:14px;color:var(--ink-2)}

.test{background:var(--blue);color:#fff;border-radius:28px;overflow:hidden;display:grid;grid-template-columns:1.1fr .9fr}
.test .tx{padding:60px}
.test h2{font-size:40px;line-height:1.25}
.test p{color:#dbe6ff;margin-top:14px;font-size:18px}
.test ul{list-style:none;margin-top:22px}
.test li{padding:9px 0;border-top:1px solid rgba(255,255,255,.22);color:#eef3ff}
.test .cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.test .ph{min-height:100%}

.faq .wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px}
details{border-bottom:1px solid var(--line);padding:20px 0}
details:first-child{border-top:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:20px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-family:Inter,sans-serif;font-weight:500;color:var(--blue);font-size:22px;line-height:1.2}
details[open] summary:after{content:"–"}
details p{color:var(--ink-2);margin-top:10px}

.visit .wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.visit .ph{border-radius:24px;overflow:hidden;min-height:440px}
.card{background:var(--soft);border-radius:24px;padding:44px}
.card h2{font-size:34px;line-height:1.3}
.card p{color:var(--ink-2);margin-top:10px}
.hours{margin-top:22px;border-top:1px solid var(--line)}
.hours div{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
.hours span{color:var(--ink-2)}
.card .cta{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap}
footer.foot{border-top:1px solid var(--line);padding:56px 0 28px;color:var(--ink-2);font-size:14.5px}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.fcols h4{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:12px}
.fcols p{line-height:1.75}
.fcols nav{display:grid;gap:8px}
.fcols a:hover{color:var(--blue)}
.fcols .fb p{margin-top:12px;max-width:300px}
.fbot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-size:13.5px}

@media (max-width:900px){
  .wrap{padding:0 20px}
  html{scroll-padding-top:70px}
  .menu{display:none}
  .burger{display:inline-flex}
  .menu.is-open{display:flex;flex-direction:column;gap:0;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 18px 30px rgba(15,27,61,.08);padding:6px 20px 20px;margin:0;font-size:17px;color:var(--ink)}
  .menu.is-open>a{height:auto;padding:14px 0;border-bottom:1px solid var(--line)}
  .menu.is-open>a[aria-current="page"]{color:var(--blue);font-weight:600;border-bottom-color:var(--line)}
  .menu.is-open .menu-cta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
  .menu.is-open .menu-cta .btn{padding:12px 10px;font-size:15px}
  .hero{padding-top:44px}
  .hero .grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:44px}
  .hero .lead{font-size:17.5px}
  .hero .pic{aspect-ratio:4/3.6}
  .hero .float b{font-size:26px}
  .stats{grid-template-columns:1fr 1fr;margin-top:44px}
  .stats div{padding:20px 0}
  .stats div+div{padding-left:0;border-left:0}
  .stats div:nth-child(even){padding-left:20px;border-left:1px solid rgba(255,255,255,.14)}
  .stats div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.14)}
  .stats b{font-size:26px}
  section{padding:72px 0}
  .sh h2{font-size:32px}
  .courses{grid-template-columns:1fr}
  .sum{grid-template-columns:repeat(3,1fr);gap:8px}
  .sum div{padding:16px 14px;border-radius:14px}
  .sum b{font-size:22px}
  .sum span{font-size:13px;display:block;line-height:1.45;margin-top:4px}
  .why .wrap,.test,.faq .wrap,.visit .wrap{grid-template-columns:1fr}
  .why .wrap{gap:36px}
  .why .ph{aspect-ratio:4/3}
  th,td{padding:12px 14px}
  table{font-size:15px}
  th:nth-child(2),td:nth-child(2){display:none}
  .test{border-radius:24px}
  .test .tx{padding:36px 24px}
  .test h2{font-size:30px}
  .test .ph{height:240px;order:-1}
  .faq .wrap{gap:24px}
  summary{font-size:17px}
  .card{padding:30px 24px}
  .visit .ph{min-height:260px}
  .fcols{grid-template-columns:1fr 1fr;gap:28px 20px}
  .fcols .fb,.fcols>div:last-child{grid-column:1/-1}
  .fbot{margin-top:32px;flex-direction:column}
}
@media (max-width:380px){
  .nav-r .btn{display:none}
}

/* ---------- inner pages ---------- */
html{scroll-padding-top:84px}
.lnk{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:500}
.lnk svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .15s}
.lnk:hover svg{transform:translateX(3px)}
.more{margin-top:28px}
.phead{background:var(--navy);color:#fff;padding:52px 0 64px}
.phead .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}
.phead.solo .wrap{grid-template-columns:minmax(0,1fr)}
.crumb{display:flex;gap:8px;font-size:14px;color:#aeb8d2}
.crumb a:hover{color:#fff}
.crumb span{opacity:.5}
.phead .eyebrow{color:#93b4ff;margin-top:26px}
.phead h1{font-size:52px;line-height:1.22;margin-top:8px;max-width:640px}
.phead h1 mark{background:none;color:#93b4ff}
.phead .lead{font-size:18.5px;color:#c3cbe0;margin-top:16px;max-width:560px}
.phead .ph{aspect-ratio:16/11;border-radius:22px;overflow:hidden}
.phead .chips{margin-top:28px}
.phead .chips a{font-size:14.5px;padding:7px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.22);color:#dbe3f5}
.phead .chips a:hover{background:rgba(255,255,255,.08)}
.phead+section{padding-top:80px}

/* courses page */
.steps4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px;counter-reset:s}
.steps4 li{list-style:none;border:1px solid var(--line);border-radius:18px;padding:24px 24px 22px}
.steps4 small{font-family:Inter,sans-serif;font-weight:600;font-size:14px;color:var(--blue)}
.steps4 b{display:block;font-size:18px;margin-top:6px}
.steps4 p{color:var(--ink-2);font-size:15px;margin-top:4px}
.sched td:first-child{font-weight:600}
.sched td small{display:block;font-weight:400;font-size:13.5px;color:var(--ink-2)}
.seat{display:inline-block;font-size:13px;font-weight:500;padding:3px 10px;border-radius:6px;background:var(--blue-l);color:#1d4ed8;white-space:nowrap}
.seat.low{background:#fff1e6;color:#c2410c}
.pay{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.pay div{background:var(--soft);border-radius:18px;padding:26px}
.pay b{display:block;font-size:18px}
.pay p{color:var(--ink-2);font-size:15px;margin-top:6px}

/* tutors page */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:28px 22px;margin-top:44px}
.tutor .ph{aspect-ratio:5/6;border-radius:20px;overflow:hidden;background:var(--soft)}
.tutor h3{font-size:21px;margin-top:16px;line-height:1.35}
.tutor .role{color:var(--blue);font-weight:500;font-size:15.5px}
.tutor p{color:var(--ink-2);font-size:15.5px;margin-top:8px}
.tutor .meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tutor .meta span{font-size:13px;padding:3px 10px;border-radius:6px;background:var(--soft);color:var(--ink-2)}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.quote{background:var(--soft);border-radius:20px;padding:30px;display:flex;flex-direction:column}
.quote blockquote{font-size:17px;line-height:1.7;flex:1}
.quote .who{margin-top:20px;font-size:14.5px;color:var(--ink-2)}
.quote .who b{display:block;color:var(--ink);font-size:15.5px}

/* contact page */
.cgrid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr);gap:28px;align-items:start}
.formcard{border:1px solid var(--line);border-radius:24px;padding:40px;box-shadow:0 10px 30px rgba(15,27,61,.05)}
.formcard h2{font-size:30px;line-height:1.3}
.seg{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:24px}
.seg label{position:relative;cursor:pointer}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;height:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14.5px;line-height:1.4;color:var(--ink-2);transition:border-color .15s,background .15s}
.seg span b{display:block;color:var(--ink);font-weight:600;font-size:15.5px}
.seg input:checked+span{border-color:var(--blue);background:var(--blue-l);box-shadow:inset 0 0 0 1px var(--blue)}
.seg input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px 16px;margin-top:24px}
.fgrid .full{grid-column:1/-1}
.fld label{display:block;font-size:14.5px;font-weight:500;margin-bottom:7px}
.fld label i{font-style:normal;color:#c2410c;margin-left:2px}
.fld input,.fld select,.fld textarea{width:100%;height:48px;border:1px solid #d3d9e6;border-radius:10px;padding:0 14px;background:#fff;font:inherit;font-size:16px;color:inherit;transition:border-color .15s,box-shadow .15s}
.fld textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.6}
.fld select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b6478' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:18px;padding-right:40px}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-l)}
.fld input::placeholder,.fld textarea::placeholder{color:#9aa3b5}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#3a4152;cursor:pointer}
.check input{width:18px;height:18px;margin-top:4px;accent-color:var(--blue);flex:none}
.check i{font-style:normal;color:#c2410c}
.fsub{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:26px}
.fsub .btn{padding:14px 28px;font-size:16px}
.fsub small{font-size:13.5px;color:var(--ink-2)}
.done{text-align:center;padding:24px 8px 8px}
.done:focus{outline:0}
.done .ok{width:64px;height:64px;border-radius:50%;background:var(--blue-l);display:grid;place-items:center;margin:0 auto}
.done .ok svg{width:30px;height:30px;stroke:var(--blue);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.done h2{margin-top:18px}
.done>p{color:var(--ink-2);margin:8px auto 0;max-width:440px}
.done b{white-space:nowrap}
.done dl{margin:26px auto 0;max-width:440px;text-align:left;border-top:1px solid var(--line)}
.done dl div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px}
.done dt{color:var(--ink-2)}
.done dd{font-weight:500;text-align:right}
.done .cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.done .fine{font-size:13px;color:var(--ink-2);margin-top:18px}
.aside{display:grid;gap:18px}
.aside .card{padding:32px}
.aside .card h3{font-size:20px}
.chan{display:grid;gap:2px;margin-top:14px}
.chan a,.chan div{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px}
.chan span{color:var(--ink-2)}
.chan b{font-weight:500}
.chan a b{color:var(--blue)}
.how{list-style:none;display:grid;gap:14px;margin-top:18px}
.how li{display:flex;gap:12px;align-items:flex-start}
.how svg{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;margin-top:2px;flex:none}
.how b{display:block;font-weight:600}
.how span{color:var(--ink-2);font-size:15px}

@media (max-width:900px){
  .phead{padding:28px 0 44px}
  .phead .wrap{grid-template-columns:1fr;gap:32px}
  .phead h1{font-size:34px}
  .phead .lead{font-size:17px}
  .phead .eyebrow{margin-top:20px}
  .phead .ph{aspect-ratio:16/10}
  .phead+section{padding-top:56px}
  .steps4{grid-template-columns:1fr 1fr;gap:10px}
  .steps4 li{padding:18px}
  .pay{grid-template-columns:1fr;gap:10px}
  .sched th:nth-child(2),.sched td:nth-child(2){display:table-cell}
  .sched th:nth-child(3),.sched td:nth-child(3){display:none}
  .team{grid-template-columns:1fr 1fr;gap:26px 14px}
  .tutor h3{font-size:17px;margin-top:12px}
  .tutor .role{font-size:14px;line-height:1.5}
  .tutor p{display:none}
  .tutor .meta span:nth-child(n+2){display:none}
  .quotes{grid-template-columns:1fr;gap:12px}
  .quote{padding:24px 22px}
  .cgrid{grid-template-columns:1fr}
  .formcard{padding:28px 20px;border-radius:20px}
  .formcard h2{font-size:25px}
  .seg{grid-template-columns:1fr 1fr}
  .fgrid{grid-template-columns:1fr}
  .fsub .btn{width:100%}
  .aside .card{padding:26px 22px}
}