:root{
  --navy:#0b2239;
  --navy-2:#123a5a;
  --navy-3:#184d73;
  --green:#10b981;
  --green-dark:#047857;
  --sky:#e8f4ff;
  --mint:#e8fbf4;
  --yellow:#f59e0b;
  --red:#dc2626;
  --text:#172033;
  --muted:#556274;
  --line:#dce4ec;
  --surface:#ffffff;
  --surface-soft:#f5f8fb;
  --shadow:0 18px 45px rgba(11,34,57,.10);
  --shadow-soft:0 8px 24px rgba(11,34,57,.08);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
}

*{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  scroll-padding-top:88px;
}

body{
  margin:0;
  font-family:"Noto Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:#fff;
  font-size:17px;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
}

a{text-decoration:none}

button,input{font:inherit}

.skip-link{
  position:fixed;
  left:12px;
  top:-80px;
  z-index:9999;
  padding:10px 16px;
  background:#fff;
  color:var(--navy);
  border:2px solid var(--navy);
  border-radius:10px;
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid rgba(11,34,57,.08);
  backdrop-filter:blur(14px);
}

.navbar{min-height:78px}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--navy)!important;
  line-height:1.15;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border-radius:13px;
  background:linear-gradient(135deg,var(--navy),var(--navy-3));
  color:#fff;
  font-size:22px;
  box-shadow:0 7px 18px rgba(11,34,57,.18);
}
.brand strong{
  display:block;
  font-size:18px;
  font-weight:800;
}
.brand small{
  display:block;
  margin-top:4px;
  color:#64748b;
  font-size:11px;
  font-weight:700;
  letter-spacing:.04em;
}

.nav-link{
  color:#344256!important;
  font-weight:700;
  border-radius:10px;
  padding:.6rem .8rem!important;
}
.nav-link:hover,.nav-link:focus,.nav-link.active{
  color:var(--navy)!important;
  background:#eef5fa;
}
.btn-nav-cta{
  background:var(--navy);
  color:#fff!important;
  font-weight:800;
  padding:.65rem 1rem;
  border-radius:12px;
}
.btn-nav-cta:hover{background:var(--navy-3)}

.hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 68px;
  color:#fff;
  background:
    radial-gradient(circle at 80% 20%, rgba(16,185,129,.20), transparent 28rem),
    radial-gradient(circle at 12% 92%, rgba(63,166,255,.17), transparent 28rem),
    linear-gradient(135deg,#071b2e 0%,#0b2b47 58%,#0b3b50 100%);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.14fr) minmax(340px,.86fr);
  gap:56px;
  align-items:center;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-bottom:12px;
  color:#9ee8d0;
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
}
.eyebrow-dark{color:var(--green-dark)}

.hero h1{
  margin:0;
  max-width:780px;
  font-size:clamp(2.4rem,5vw,4.4rem);
  line-height:1.12;
  letter-spacing:-.03em;
  font-weight:800;
}
.hero h1 span{color:#7de0c2}

.hero-lead{
  max-width:760px;
  margin:22px 0 0;
  color:#d5e1eb;
  font-size:clamp(1.03rem,1.4vw,1.18rem);
  line-height:1.9;
  font-weight:500;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}

.btn-primary-main,.btn-outline-main,.btn-outline-dark-custom{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:48px;
  padding:.76rem 1.2rem;
  border-radius:13px;
  font-weight:800;
}
.btn-primary-main{
  background:var(--green);
  border:1px solid var(--green);
  color:#052d21;
}
.btn-primary-main:hover{
  background:#35d5a5;
  border-color:#35d5a5;
  color:#052d21;
  transform:translateY(-1px);
}
.btn-outline-main{
  border:1px solid rgba(255,255,255,.32);
  color:#fff;
  background:rgba(255,255,255,.06);
}
.btn-outline-main:hover{
  border-color:#fff;
  background:#fff;
  color:var(--navy);
}

.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:16px 24px;
  list-style:none;
  margin:24px 0 0;
  padding:0;
  color:#c9d6e1;
  font-size:14px;
  font-weight:600;
}
.hero-points i{color:#7de0c2;margin-right:5px}

.journey-card{
  padding:28px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-xl);
  background:linear-gradient(180deg,rgba(255,255,255,.13),rgba(255,255,255,.075));
  box-shadow:0 24px 55px rgba(0,0,0,.20);
  backdrop-filter:blur(12px);
}
.journey-top{
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:start;
}
.journey-label{
  color:#95e2ca;
  font-size:11px;
  font-weight:800;
  letter-spacing:.11em;
}
.journey-top h2{
  margin:5px 0 0;
  font-size:24px;
  font-weight:800;
}
.lesson-total{
  min-width:72px;
  padding:10px 12px;
  text-align:center;
  border-radius:17px;
  background:#fff;
  color:var(--navy);
  line-height:1;
}
.lesson-total strong{font-size:31px;font-weight:800}
.lesson-total span{display:block;margin-top:4px;font-size:12px;font-weight:800}

.journey-route{
  display:flex;
  align-items:center;
  margin:30px 0;
}
.route-node{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:31px;
  height:31px;
  border:2px solid rgba(255,255,255,.46);
  border-radius:50%;
  color:#fff;
  font-size:12px;
  font-weight:800;
}
.route-line{
  flex:1 1 auto;
  height:2px;
  background:rgba(255,255,255,.25);
}

.progress-panel{
  padding:17px;
  border-radius:16px;
  background:rgba(0,0,0,.14);
  font-size:14px;
}
.progress-panel strong{color:#7de0c2;font-size:16px}
.progress-panel .progress{
  height:9px;
  margin:10px 0 8px;
  background:rgba(255,255,255,.16);
}
.progress-panel .progress-bar{background:var(--green)}
.progress-panel small{color:#b9c8d5}

.feature-strip{
  position:relative;
  z-index:2;
  margin-top:-1px;
  border-bottom:1px solid var(--line);
  background:#fff;
}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.feature-item{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:116px;
  padding:22px 24px;
  border-right:1px solid var(--line);
}
.feature-item:first-child{border-left:1px solid var(--line)}
.feature-item>i{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:0 0 auto;
  border-radius:13px;
  background:#edf7f3;
  color:var(--green-dark);
  font-size:21px;
}
.feature-item strong{
  display:block;
  color:var(--navy);
  font-size:15px;
  font-weight:800;
}
.feature-item span{
  display:block;
  margin-top:4px;
  color:var(--muted);
  font-size:13px;
  line-height:1.55;
}

.lessons-section{
  padding:84px 0 86px;
  background:var(--surface-soft);
}
.section-heading{
  display:flex;
  justify-content:space-between;
  gap:30px;
  align-items:end;
  margin-bottom:30px;
}
.section-heading h2{
  margin:0;
  color:var(--navy);
  font-size:clamp(1.75rem,3vw,2.55rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.02em;
}
.section-heading p{
  max-width:800px;
  margin:9px 0 0;
  color:var(--muted);
  font-size:16px;
}
.centered{text-align:center;display:block}
.centered h2{max-width:780px;margin-inline:auto}

.lesson-tools{
  display:flex;
  justify-content:space-between;
  gap:16px;
  align-items:center;
  margin-bottom:16px;
}
.search-box{
  position:relative;
  flex:1 1 620px;
  max-width:720px;
}
.search-box>i{
  position:absolute;
  left:17px;
  top:50%;
  transform:translateY(-50%);
  color:#607086;
  font-size:18px;
}
.search-box input{
  width:100%;
  min-height:52px;
  padding:11px 48px 11px 48px;
  border:1.5px solid #cbd7e3;
  border-radius:14px;
  background:#fff;
  color:var(--text);
  outline:none;
  font-weight:600;
}
.search-box input::placeholder{color:#738296;font-weight:500}
.search-box input:focus{
  border-color:var(--navy-3);
  box-shadow:0 0 0 4px rgba(24,77,115,.10);
}
.clear-search{
  position:absolute;
  right:9px;
  top:50%;
  transform:translateY(-50%);
  width:34px;
  height:34px;
  border:0;
  border-radius:9px;
  background:transparent;
  color:#607086;
}
.clear-search:hover{background:#edf2f7;color:var(--navy)}

.filter-group{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.filter-btn{
  min-height:44px;
  padding:8px 13px;
  border:1px solid #cbd7e3;
  border-radius:11px;
  background:#fff;
  color:#455468;
  font-size:14px;
  font-weight:800;
}
.filter-btn:hover,.filter-btn.active{
  border-color:var(--navy);
  background:var(--navy);
  color:#fff;
}

.lesson-result-row{
  display:flex;
  justify-content:space-between;
  gap:15px;
  align-items:center;
  margin-bottom:20px;
  color:var(--muted);
  font-size:14px;
  font-weight:700;
}
.text-button{
  border:0;
  background:transparent;
  color:var(--navy-3);
  font-weight:800;
}
.text-button:hover{text-decoration:underline}

.lesson-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.lesson-card{
  position:relative;
  display:flex;
  flex-direction:column;
  min-height:100%;
  overflow:hidden;
  border:1px solid #dbe5ee;
  border-radius:var(--radius-lg);
  background:#fff;
  box-shadow:0 8px 24px rgba(11,34,57,.055);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.lesson-card:hover{
  transform:translateY(-5px);
  border-color:#becfdd;
  box-shadow:var(--shadow);
}
.lesson-card[hidden]{display:none!important}
.lesson-accent{height:6px}
.accent-1{background:#10b981}.accent-2{background:#2f80ed}.accent-3{background:#7c3aed}
.accent-4{background:#e8590c}.accent-5{background:#dc2626}.accent-6{background:#0f766e}.accent-7{background:#6d28d9}

.lesson-card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:18px 20px 0;
}
.lesson-number{
  color:#94a3b8;
  font-size:13px;
  font-weight:800;
  letter-spacing:.09em;
}
.visit-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 9px;
  border-radius:999px;
  background:#f1f5f9;
  color:#64748b;
  font-size:11px;
  font-weight:800;
}
.visit-badge.visited{
  background:#e7f8f1;
  color:#047857;
}
.visit-badge.visited i::before{content:"\F26B"}

.lesson-icon{
  display:grid;
  place-items:center;
  width:60px;
  height:60px;
  margin:20px 20px 13px;
  border-radius:17px;
  background:#eef5fa;
  color:var(--navy-3);
  font-size:28px;
}
.lesson-body{
  flex:1 1 auto;
  padding:0 20px 18px;
}
.lesson-kicker{
  color:var(--green-dark);
  font-size:10px;
  font-weight:800;
  letter-spacing:.09em;
}
.lesson-body h3{
  margin:7px 0 9px;
  color:var(--navy);
  font-size:20px;
  line-height:1.45;
  font-weight:800;
}
.lesson-body p{
  margin:0;
  color:#4f5e71;
  font-size:14px;
  line-height:1.75;
}
.lesson-tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-top:15px;
}
.lesson-tags span{
  padding:4px 8px;
  border-radius:8px;
  background:#f0f4f7;
  color:#506074;
  font-size:10px;
  font-weight:800;
}
.lesson-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:15px 20px;
  border-top:1px solid #e5ebf1;
  color:var(--navy);
  background:#fbfcfd;
  font-size:14px;
  font-weight:800;
}
.lesson-link:hover{
  background:#edf7f3;
  color:var(--green-dark);
}
.lesson-link i{transition:transform .2s ease}
.lesson-link:hover i{transform:translateX(4px)}

.no-results{
  margin-top:25px;
  padding:50px 20px;
  text-align:center;
  border:1px dashed #b9c8d6;
  border-radius:20px;
  background:#fff;
}
.no-results>i{
  display:block;
  margin-bottom:8px;
  color:#8ba0b3;
  font-size:35px;
}
.no-results h3{margin:0;color:var(--navy);font-size:20px;font-weight:800}
.no-results p{margin:7px 0 0;color:var(--muted);font-size:14px}

.assessment-section{
  padding:0 0 82px;
  background:var(--surface-soft);
}
.assessment-card{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:22px;
  align-items:center;
  padding:30px 34px;
  overflow:hidden;
  border-radius:var(--radius-xl);
  background:linear-gradient(135deg,#0b2239 0%,#164868 100%);
  color:#fff;
  box-shadow:var(--shadow);
}
.assessment-icon{
  display:grid;
  place-items:center;
  width:72px;
  height:72px;
  border-radius:20px;
  background:rgba(255,255,255,.12);
  color:#8fe6ca;
  font-size:34px;
}
.assessment-copy .eyebrow{margin-bottom:4px}
.assessment-copy h2{
  margin:0;
  font-size:27px;
  line-height:1.35;
  font-weight:800;
}
.assessment-copy p{
  margin:7px 0 0;
  color:#c8d5df;
  font-size:14px;
}
.assessment-btn{
  min-width:160px;
  min-height:48px;
  border-radius:13px;
  color:var(--navy);
  font-weight:800;
}

.steps-section{padding:82px 0}
.steps-grid{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  margin-top:34px;
}
.step-card{
  position:relative;
  padding:27px 22px 24px;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
  box-shadow:var(--shadow-soft);
}
.step-number{
  position:absolute;
  top:15px;
  right:17px;
  color:#d7e0e8;
  font-size:29px;
  font-weight:800;
}
.step-card>i{
  display:grid;
  place-items:center;
  width:49px;
  height:49px;
  margin-bottom:18px;
  border-radius:14px;
  background:var(--mint);
  color:var(--green-dark);
  font-size:22px;
}
.step-card h3{
  margin:0;
  color:var(--navy);
  font-size:18px;
  font-weight:800;
}
.step-card p{
  margin:8px 0 0;
  color:var(--muted);
  font-size:14px;
}

.final-cta{
  padding:0 0 82px;
}
.final-cta-card{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:30px;
  padding:35px;
  border:1px solid #d6e2eb;
  border-radius:var(--radius-xl);
  background:linear-gradient(135deg,#eff9f5,#eef6fd);
}
.final-cta h2{
  margin:0;
  color:var(--navy);
  font-size:28px;
  font-weight:800;
}
.final-cta p{
  max-width:760px;
  margin:8px 0 0;
  color:var(--muted);
  font-size:15px;
}
.final-actions{
  display:flex;
  flex:0 0 auto;
  flex-wrap:wrap;
  gap:10px;
}
.btn-outline-dark-custom{
  border:1px solid #9eb0bf;
  color:var(--navy);
  background:#fff;
}
.btn-outline-dark-custom:hover{
  border-color:var(--navy);
  background:var(--navy);
  color:#fff;
}

.site-footer{
  padding:50px 0 24px;
  background:#071a2b;
  color:#c3d0da;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr .65fr .8fr;
  gap:45px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:#fff;
}
.footer-brand>i{font-size:28px;color:#75ddb9}
.footer-brand strong{display:block;font-size:18px;font-weight:800}
.footer-brand small{display:block;margin-top:3px;color:#8ea3b5;font-size:11px}
.site-footer p{
  max-width:570px;
  margin:16px 0 0;
  color:#95a8b8;
  font-size:13px;
}
.site-footer h2{
  margin:0 0 12px;
  color:#fff;
  font-size:14px;
  font-weight:800;
}
.site-footer div>div>a:not(.footer-brand){
  display:block;
  margin:8px 0;
  color:#a9bac8;
  font-size:13px;
}
.site-footer div>div>a:not(.footer-brand):hover{color:#fff}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  color:#7f96a8;
  font-size:12px;
}

@media (max-width:1199.98px){
  .hero-grid{gap:34px}
  .lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-item{padding-inline:17px}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:991.98px){
  body{font-size:16px}
  .navbar{min-height:70px}
  .navbar-collapse{
    margin-top:12px;
    padding:12px;
    border:1px solid var(--line);
    border-radius:14px;
    background:#fff;
    box-shadow:var(--shadow-soft);
  }
  .hero{padding:58px 0 52px}
  .hero-grid{grid-template-columns:1fr}
  .journey-card{max-width:690px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-item:nth-child(odd){border-left:1px solid var(--line)}
  .feature-item{border-bottom:1px solid var(--line)}
  .lesson-tools{align-items:stretch;flex-direction:column}
  .search-box{max-width:none;flex-basis:auto}
  .assessment-card{grid-template-columns:auto 1fr}
  .assessment-btn{grid-column:2}
  .final-cta-card{align-items:flex-start;flex-direction:column}
}

@media (max-width:767.98px){
  html{scroll-padding-top:74px}
  .brand small{display:none}
  .brand-mark{width:39px;height:39px;border-radius:11px}
  .hero h1{font-size:clamp(2.05rem,10vw,3rem)}
  .hero-lead{font-size:1rem}
  .hero-actions .btn{width:100%}
  .hero-points{gap:10px 16px}
  .journey-card{padding:20px}
  .journey-route{overflow-x:auto;padding-bottom:3px}
  .route-line{min-width:18px}
  .feature-grid{grid-template-columns:1fr 1fr}
  .feature-item{
    min-height:120px;
    align-items:flex-start;
    flex-direction:column;
    gap:9px;
  }
  .lessons-section{padding:62px 0}
  .section-heading{display:block}
  .lesson-grid{grid-template-columns:1fr}
  .lesson-card:hover{transform:none}
  .lesson-result-row{align-items:flex-start;flex-direction:column}
  .assessment-section{padding-bottom:62px}
  .assessment-card{grid-template-columns:1fr;padding:25px}
  .assessment-icon{width:58px;height:58px}
  .assessment-btn{grid-column:auto;width:100%}
  .steps-section{padding:62px 0}
  .steps-grid{grid-template-columns:1fr}
  .final-cta{padding-bottom:62px}
  .final-cta-card{padding:25px}
  .final-actions{width:100%}
  .final-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:5px}
}

@media (max-width:480px){
  body{font-size:15.5px}
  .container{--bs-gutter-x:1.25rem}
  .hero{padding-top:45px}
  .feature-grid{grid-template-columns:1fr}
  .feature-item{
    min-height:auto;
    flex-direction:row;
    align-items:center;
    border-left:1px solid var(--line)!important;
  }
  .filter-group{
    display:grid;
    grid-template-columns:repeat(3,1fr);
  }
  .filter-btn{padding-inline:7px;font-size:12px}
  .lesson-card-head{padding-inline:17px}
  .lesson-icon{margin-inline:17px}
  .lesson-body{padding-inline:17px}
  .lesson-link{padding-inline:17px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    scroll-behavior:auto!important;
    transition:none!important;
    animation:none!important;
  }
}

@media print{
  .site-header,.hero-actions,.lesson-tools,.lesson-result-row,.assessment-section,.final-cta,.site-footer{display:none!important}
  .hero{background:#fff!important;color:#000!important;padding:20px 0}
  .hero h1,.hero-lead{color:#000!important}
  .journey-card{border:1px solid #aaa;color:#000;box-shadow:none}
  .lesson-grid{grid-template-columns:1fr 1fr}
  .lesson-card{box-shadow:none;break-inside:avoid}
}