/* U-Sabai Land and House — landing + policy styles
   ສີແບຣນ: navy #0E1E38 / gray #4D4D4D (ດຶງຈາກໄຟລ໌ໂລໂກ້ຕົ້ນສະບັບ) */

:root{
  --navy:#0E1E38;
  --navy-700:#16294a;
  --navy-50:#f2f5fa;
  --gray:#4D4D4D;
  --gray-500:#6b7280;
  --line:#e3e7ee;
  --bg:#ffffff;
  --gold:#b8925a;
  --radius:14px;
  --maxw:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans Lao','Phetsarath OT','Saysettha OT','Noto Sans',system-ui,-apple-system,sans-serif;
  color:var(--gray);
  background:var(--bg);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:74px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:46px;width:auto}
.brand b{color:var(--navy);font-size:17px;line-height:1.2;display:block}
.brand span{font-size:12px;letter-spacing:.14em;color:var(--gray-500);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--gray);font-size:15px}
.nav-links a:hover{color:var(--navy);text-decoration:none}
.btn{
  display:inline-block;padding:11px 22px;border-radius:999px;
  background:var(--navy);color:#fff;font-size:15px;border:1px solid var(--navy);
  transition:.18s;white-space:nowrap;
}
.btn:hover{background:var(--navy-700);text-decoration:none;color:#fff}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-ghost:hover{background:var(--navy-50);color:var(--navy)}
.menu-toggle{display:none;background:none;border:0;font-size:26px;color:var(--navy);cursor:pointer;line-height:1}

/* ---------- hero ---------- */
.hero{
  background:linear-gradient(160deg,var(--navy) 0%,#16294a 55%,#1e3763 100%);
  color:#fff;padding:88px 0 96px;position:relative;overflow:hidden;
}
.hero:after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:rgba(255,255,255,.05);
}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.45;color:#fff;font-weight:700;max-width:820px}
.hero p{margin-top:20px;font-size:clamp(16px,1.9vw,19px);color:#d6dded;max-width:680px}
.hero .cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero .btn{background:#fff;color:var(--navy);border-color:#fff}
.hero .btn:hover{background:#eef2f8;color:var(--navy)}
.hero .btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.hero .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- sections ---------- */
section{padding:76px 0}
.section-alt{background:var(--navy-50)}
h2{color:var(--navy);font-size:clamp(22px,3vw,30px);line-height:1.5;font-weight:700}
h3{color:var(--navy);font-size:19px;font-weight:700;line-height:1.5}
.lead{margin-top:14px;max-width:760px;color:var(--gray)}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold);margin-bottom:10px;
}

.grid{display:grid;gap:22px;margin-top:36px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.2s;
}
.card:hover{box-shadow:0 10px 30px rgba(14,30,56,.09);transform:translateY(-2px)}
.card .ico{
  width:44px;height:44px;border-radius:11px;background:var(--navy-50);
  display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:14px;
}
.card p{margin-top:10px;font-size:15px}

.proj{border-left:4px solid var(--navy)}
.proj .tag{
  display:inline-block;font-size:12px;padding:3px 12px;border-radius:999px;
  background:var(--navy-50);color:var(--navy);margin-bottom:10px;
}
.proj dl{margin-top:14px;font-size:14.5px}
.proj dl div{display:flex;justify-content:space-between;padding:7px 0;border-top:1px dashed var(--line)}
.proj dt{color:var(--gray-500)}
.proj dd{color:var(--navy);font-weight:600}

.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.about-logo{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;text-align:center}
.about-logo img{margin:0 auto;max-width:280px}

.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:36px}
.contact-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.contact-item .ico{margin-bottom:0;flex:0 0 44px}
.contact-item b{display:block;color:var(--navy);font-size:15px}
.contact-item span{font-size:15px;word-break:break-word}

.note{
  margin-top:30px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:10px;padding:20px 22px;font-size:14.5px;
}

/* ---------- policy pages ---------- */
.page-head{background:var(--navy);color:#fff;padding:56px 0 44px}
.page-head h1{font-size:clamp(24px,3.6vw,34px);color:#fff;line-height:1.45}
.page-head p{color:#cbd5e6;margin-top:10px;font-size:15px}
.doc{max-width:840px;margin:0 auto;padding:56px 20px 80px}
.doc h2{margin:38px 0 12px;font-size:21px;border-bottom:1px solid var(--line);padding-bottom:9px}
.doc h3{margin:22px 0 8px;font-size:17px}
.doc p{margin:10px 0}
.doc ul,.doc ol{margin:10px 0 10px 24px}
.doc li{margin:7px 0}
.doc table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.doc th,.doc td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.doc th{background:var(--navy-50);color:var(--navy);font-weight:600}
.toc{background:var(--navy-50);border-radius:var(--radius);padding:22px 26px;margin-top:8px}
.toc ol{margin-left:20px}
.toc li{margin:5px 0}
.updated{font-size:14px;color:var(--gray-500);border-top:1px solid var(--line);margin-top:40px;padding-top:16px}
.lang-en{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin-top:48px}
.lang-en h2{border:0;padding:0;margin-top:0}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#b9c4d8;padding:56px 0 26px;font-size:14.5px}
.site-footer a{color:#dbe3f0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px;font-weight:600}
.site-footer ul{list-style:none}
.site-footer li{margin:7px 0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:36px;padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .grid-3,.grid-4,.grid-2,.contact-grid,.footer-grid{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:640px){
  .nav-links{
    display:none;position:absolute;top:74px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 18px;
    border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(0,0,0,.06);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-links .btn{margin-top:12px;text-align:center;border-bottom:0}
  .menu-toggle{display:block}
  .grid-3,.grid-4,.grid-2,.contact-grid,.footer-grid{grid-template-columns:1fr}
  section{padding:56px 0}
  .hero{padding:64px 0 70px}
}