:root{
  --primary:#6E1023; --primaryDark:#4A0B17; --gold:#B08D43;
  --goldLight:#E8D9B5; --goldSoft:#F1E8D4; --laoGreen:#2F6E53;
  --hanoiRed:#A12B37; --surface:#F6F1E7; --card:#FFFFFF;
  --ink:#241A15; --muted:#8A7C6E;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden;}
body{
  font-family:'Sukhumvit Set','Noto Sans Lao','Segoe UI',
    'Helvetica Neue',Arial,sans-serif;
  background:var(--surface); color:var(--ink); line-height:1.65;
  font-size:16px;
  overflow-x:hidden;
  /* ตัดบรรทัดข้อความไทย/ลาวยาว ๆ ที่ไม่มีเว้นวรรค กันล้นแนวนอน */
  overflow-wrap:anywhere;
  word-break:break-word;
}
a{color:var(--primary);text-decoration:none;}
img{max-width:100%;}
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 18px;}

/* ========== MOBILE-FIRST BASE ========== */

/* header */
header{
  position:sticky;top:0;z-index:50;background:rgba(246,241,231,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid rgba(176,141,67,.22);
}
.nav{display:flex;align-items:center;justify-content:space-between;
  gap:10px;padding:10px 0;}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;
  color:var(--primaryDark);font-size:16px;line-height:1.1;}
.brand-full{display:none;}
.logo{width:34px;height:34px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;color:#fff;
  font-weight:800;font-size:12px;
  background:linear-gradient(135deg,var(--gold),var(--primary));
  border:1.5px solid rgba(255,255,255,.7);}
.nav .spacer{display:none;}
.nav a.navlink{display:none;color:var(--ink);font-weight:600;font-size:14px;
  padding:6px 8px;border-radius:8px;}
.nav a.navlink:hover{background:var(--goldSoft);}
.langsw{display:inline-flex;background:var(--goldSoft);
  border:1px solid rgba(176,141,67,.4);border-radius:20px;overflow:hidden;
  flex:none;}
.langsw button{border:none;background:transparent;padding:7px 13px;
  font-size:13px;font-weight:700;color:var(--muted);cursor:pointer;
  font-family:inherit;min-height:36px;}
.langsw button.active{background:var(--primary);color:#fff;border-radius:20px;}

/* hero */
.hero{padding:34px 0 26px;
  background:radial-gradient(900px 360px at 90% -10%,rgba(176,141,67,.18),transparent);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
.badge-pill{display:inline-block;background:var(--goldSoft);
  border:1px solid rgba(176,141,67,.4);color:var(--primaryDark);
  font-weight:700;font-size:13px;padding:5px 14px;border-radius:20px;margin-bottom:14px;}
.hero h1{font-size:29px;line-height:1.22;color:var(--primaryDark);margin-bottom:12px;}
.hero .sub{font-size:17px;color:var(--primary);font-weight:600;margin-bottom:10px;}
.hero p.desc{font-size:15.5px;color:var(--muted);margin-bottom:22px;}
.cta{display:inline-flex;align-items:center;gap:10px;background:var(--primary);
  color:#fff;font-weight:700;padding:14px 24px;border-radius:14px;font-size:16px;
  box-shadow:0 8px 20px rgba(110,16,35,.25);}
.cta-note{display:block;margin-top:10px;font-size:13px;color:var(--muted);}

/* phone mockup */
.phone{width:250px;max-width:80vw;aspect-ratio:250/520;margin:0 auto;
  background:var(--surface);border-radius:32px;border:8px solid #18130f;
  overflow:hidden;position:relative;box-shadow:0 20px 44px rgba(60,30,20,.26);}
.p-bar{height:38px;background:var(--surface);border-bottom:1px solid rgba(176,141,67,.2);
  display:flex;align-items:center;justify-content:center;font-weight:800;
  color:var(--primaryDark);font-size:14px;}
.p-body{padding:12px;}
.p-card{background:var(--card);border:1px solid rgba(176,141,67,.18);
  border-radius:16px;padding:11px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.p-badge{width:36px;height:36px;border-radius:50%;flex:none;display:flex;
  align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:10px;}
.b-lao{background:linear-gradient(135deg,var(--laoGreen),#1c4634);}
.b-hanoi{background:linear-gradient(135deg,var(--hanoiRed),#6c1a23);}
.b-thai{background:linear-gradient(135deg,var(--primary),#360812);}
.p-name{font-weight:700;font-size:13.5px;}
.p-sub{font-size:11px;color:var(--muted);}
.p-num{text-align:center;font-size:32px;font-weight:800;letter-spacing:5px;
  color:var(--primaryDark);margin:8px 0;}
.p-chips{display:flex;gap:7px;justify-content:center;}
.p-chip{background:var(--goldSoft);border-radius:10px;padding:4px 9px;text-align:center;}
.p-chip b{display:block;font-size:14px;color:var(--primaryDark);}
.p-chip span{font-size:9px;color:var(--muted);}

/* sections */
section.block{padding:38px 0;}
.h2{font-size:24px;color:var(--primaryDark);font-weight:800;text-align:center;margin-bottom:6px;}
.h2-sub{text-align:center;color:var(--muted);margin-bottom:26px;font-size:15px;}
.features{display:grid;grid-template-columns:1fr;gap:16px;}
.feature{background:var(--card);border:1px solid rgba(176,141,67,.18);
  border-radius:18px;padding:20px;transition:transform .15s,box-shadow .15s;}
.feature:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(60,30,20,.10);}
.feature .ic{width:46px;height:46px;border-radius:12px;display:flex;
  align-items:center;justify-content:center;font-size:22px;margin-bottom:12px;
  background:var(--goldSoft);}
.feature h3{font-size:17px;color:var(--ink);margin-bottom:6px;}
.feature p{font-size:14.5px;color:var(--muted);}

/* legal */
.legal{background:var(--goldSoft);border:1px solid rgba(176,141,67,.35);
  border-radius:16px;padding:20px;max-width:820px;margin:0 auto;text-align:center;}
.legal h3{color:var(--primaryDark);margin-bottom:8px;font-size:17px;}
.legal p{color:#6a5a4a;font-size:14px;}

/* privacy doc */
.doc{max-width:820px;margin:0 auto;padding:28px 0 40px;}
.doc h1{font-size:24px;color:var(--primaryDark);margin-bottom:4px;line-height:1.25;}
.doc .updated{color:var(--muted);font-size:13.5px;margin-bottom:22px;}
.doc h2{font-size:18px;color:var(--primary);margin:24px 0 8px;line-height:1.3;}
.doc p{margin-bottom:10px;color:#4a3a30;font-size:15px;}
.doc ul{margin:0 0 12px 20px;color:#4a3a30;font-size:15px;}
.doc li{margin-bottom:5px;}
.doc strong{color:var(--ink);}

/* footer */
footer{background:var(--primaryDark);color:#e9ddd6;padding:28px 0;margin-top:16px;}
footer .fgrid{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
footer a{color:var(--goldLight);}
footer .spacer{flex:1 1 100%;height:0;}
footer .small{font-size:13px;opacity:.88;}

/* ========== TABLET (>=600px) ========== */
@media(min-width:600px){
  .features{grid-template-columns:1fr 1fr;}
  .hero h1{font-size:34px;}
  footer .spacer{flex:1;height:auto;}
  footer .fgrid{flex-wrap:nowrap;}
}

/* ========== DESKTOP (>=880px) ========== */
@media(min-width:880px){
  body{font-size:16px;}
  .nav{padding:0;height:64px;}
  .brand{font-size:18px;}
  .brand-full{display:inline;}
  .brand-short{display:none;}
  .nav .spacer{display:block;flex:1;}
  .nav a.navlink{display:inline-block;}
  .hero{padding:56px 0 44px;}
  .hero-grid{grid-template-columns:1.1fr .9fr;gap:44px;}
  .hero h1{font-size:42px;}
  .hero .sub{font-size:19px;}
  .hero p.desc{font-size:16px;max-width:520px;}
  section.block{padding:56px 0;}
  .h2{font-size:28px;}
  .features{grid-template-columns:repeat(3,1fr);gap:20px;}
  .phone{width:270px;max-width:none;}
  .doc h1{font-size:30px;}
  .doc h2{font-size:19px;}
}