:root{
  --ink:#16302f; --muted:#5a6d6b; --bg:#fbf8f2; --alt:#f2ece0; --card:#fff;
  --jade:#0f5c57; --jade-d:#0a3f3c; --gold:#d9a441; --lacquer:#b3372b; --line:#e4dccb;
  --r:14px; --shadow:0 8px 28px rgba(15,60,56,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--jade)}
h1,h2,h3,h4{font-family:Fraunces,Georgia,serif;line-height:1.2;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2rem,5vw,3.4rem)} h2{font-size:clamp(1.5rem,3vw,2.2rem)} h3{font-size:1.2rem}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.narrow{max-width:800px}.center{text-align:center}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,248,242,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-family:Fraunces,serif;font-weight:700;font-size:1.2rem;color:var(--jade-d);text-decoration:none;display:flex;gap:.4rem;align-items:center}
.brand .mark{color:var(--gold)} .brand.light{color:#fff}
.nav{display:flex;gap:1.3rem;align-items:center}
.nav a{text-decoration:none;color:var(--ink);font-weight:500;font-size:.95rem}
.nav a.active,.nav a:hover{color:var(--jade)}
.nav .btn{color:#fff}
.cur{border:1px solid var(--line);border-radius:8px;padding:.3rem .4rem;background:#fff;font:inherit;font-size:.85rem}
.menu-btn{display:none;background:none;border:0;font-size:1.7rem;color:var(--jade-d);cursor:pointer;padding:.3rem}

/* buttons */
.btn{display:inline-block;background:var(--jade);color:#fff;border:2px solid var(--jade);padding:.8rem 1.5rem;border-radius:999px;font-weight:600;text-decoration:none;cursor:pointer;font:inherit;font-weight:600;transition:.2s}
.btn:hover{background:var(--jade-d);border-color:var(--jade-d)}
.btn-sm{padding:.45rem 1rem;font-size:.9rem}
.btn-ghost{background:transparent;color:var(--jade)}
.btn-ghost:hover{background:var(--jade);color:#fff}
.btn-ghost.light{color:#fff;border-color:#fff}.btn-ghost.light:hover{background:#fff;color:var(--jade-d)}
.btn.block{display:block;text-align:center;margin-top:.7rem}
.cta-row{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}.center-row{justify-content:center}

/* hero */
.hero,.tour-hero{position:relative;color:#fff;overflow:hidden;background:var(--jade-d)}
.hero{min-height:min(82vh,720px);display:flex;align-items:flex-end}
.tour-hero{min-height:340px;display:flex;align-items:flex-end}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,40,38,.15) 0%,rgba(8,40,38,.8) 100%)}
.hero-text{position:relative;padding-top:80px;padding-bottom:56px}
.hero-text h1{max-width:760px;text-shadow:0 2px 18px rgba(0,0,0,.35)}
.lead{font-size:1.15rem;max-width:620px}.lead.dark{color:var(--ink)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:600;color:var(--gold);margin:0 0 .6rem}
.eyebrow.dark{color:var(--lacquer)}

/* strip */
.strip{background:var(--jade-d);color:#fff}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding:1.2rem 16px}
.strip-grid div{display:flex;flex-direction:column;font-size:.95rem}.strip-grid span{opacity:.75;font-size:.85rem}

/* sections */
.section{padding:72px 0}.section.alt{background:var(--alt)}
.section-head{max-width:680px;margin:0 auto 2.2rem;text-align:center}
.page-head{background:var(--alt);padding:56px 0 40px;border-bottom:1px solid var(--line)}
.page-head p{color:var(--muted);max-width:640px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:24px}
.card{background:var(--card);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.card-img{position:relative;display:block;aspect-ratio:16/10;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.05)}
.badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.95);color:var(--jade-d);font-weight:600;font-size:.8rem;padding:.25rem .7rem;border-radius:999px}
.card-body{padding:1.2rem 1.3rem 1.3rem;display:flex;flex-direction:column;flex:1}
.card-body h3 a{color:var(--ink);text-decoration:none}
.card-body p{margin:.2rem 0 .8rem;color:var(--muted);font-size:.95rem}
.route{font-size:.8rem!important;text-transform:uppercase;letter-spacing:.08em;color:var(--lacquer)!important;font-weight:600}
.card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:flex-end;gap:1rem}
.from{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);line-height:1.2}
.card-foot .price{font-family:Fraunces,serif;font-size:1.5rem;font-weight:700;color:var(--jade-d);text-transform:none;letter-spacing:0}
.card-foot small,.big small{text-transform:none;letter-spacing:0}

/* destinations */
.dest-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.dest{position:relative;border-radius:var(--r);overflow:hidden;min-height:300px;grid-column:span 2;display:block;color:#fff;text-decoration:none;box-shadow:var(--shadow)}
.dest:nth-child(n+4){grid-column:span 3}
.dest img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.dest:hover img{transform:scale(1.06)}
.dest::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(8,40,38,.85))}
.dest-text{position:absolute;left:18px;bottom:16px;z-index:2}.dest-text h3{margin:.2rem 0 0;font-size:1.5rem}
.tag{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--gold);font-weight:600}

/* why / steps */
.why-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.why{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.4rem}.why p{margin:0;color:var(--muted)}
.steps{list-style:none;counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:0;margin:0}
.steps li{counter-increment:s;background:var(--card);border-radius:var(--r);padding:1.6rem;box-shadow:var(--shadow);position:relative}
.steps li::before{content:counter(s);font-family:Fraunces,serif;font-size:2.4rem;color:var(--gold);display:block;line-height:1}
.steps b{display:block;font-size:1.1rem;margin:.4rem 0}.steps span{color:var(--muted)}
.cta-band{background:var(--jade-d);color:#fff}.cta-band p{opacity:.85}

/* FAQ */
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;margin-bottom:.7rem}
summary{cursor:pointer;font-weight:600}details p{margin:.7rem 0 0;color:var(--muted)}

/* detail pages */
.two-col{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start}
.main-col h2{margin-top:2rem}
.main-col>h2:first-of-type{margin-top:1.5rem}
.side-col{position:sticky;top:84px}
.book-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;box-shadow:var(--shadow)}
.book-box .big{font-family:Fraunces,serif;font-size:2.2rem;font-weight:700;color:var(--jade-d);margin:0}
.book-box .sub{margin:.2rem 0;color:var(--muted)}
.fine{font-size:.82rem;color:var(--muted)}
.ticks,.crosses{list-style:none;padding:0}
.ticks li,.crosses li{padding-left:1.6rem;position:relative;margin:.4rem 0}
.ticks li::before{content:"\2713";position:absolute;left:0;color:var(--jade);font-weight:700}
.crosses li::before{content:"\2715";position:absolute;left:0;color:var(--lacquer);font-weight:700}
.timeline{list-style:none;padding:0;margin:0}
.day{display:grid;grid-template-columns:76px 1fr;gap:16px;padding:1.2rem 0;border-bottom:1px solid var(--line)}
.day-n{font-family:Fraunces,serif;font-weight:700;color:#fff;background:var(--jade);border-radius:10px;text-align:center;padding:.5rem 0;height:fit-content}
.day h3{margin:0 0 .2rem}.day ul{margin:.5rem 0 0;padding-left:1.1rem;color:#33474a}
.meals{font-size:.8rem;color:var(--lacquer);font-weight:600}
.inc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:2rem}
.custom-box{margin-top:48px;background:var(--alt);border-radius:var(--r);padding:2rem;text-align:center}

/* form */
.enquiry label{display:block;font-weight:600;font-size:.9rem;margin-bottom:1rem}
.enquiry input,.enquiry select,.enquiry textarea{display:block;width:100%;margin-top:.3rem;padding:.7rem .8rem;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
.enquiry input:focus,.enquiry select:focus,.enquiry textarea:focus{outline:2px solid var(--jade);border-color:transparent}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.credits li{margin:.5rem 0;font-size:.9rem}

/* footer */
.site-footer{background:#0b2928;color:#cfe0de;padding:56px 0 0;font-size:.92rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:32px;padding-bottom:36px}
.site-footer h4{color:#fff;font-size:1rem}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:.4rem 0}
.site-footer a{color:#cfe0de;text-decoration:none}.site-footer a:hover{color:var(--gold)}
.copy{border-top:1px solid rgba(255,255,255,.12);padding:18px 16px;font-size:.8rem;opacity:.75}
.wa-float{position:fixed;right:16px;bottom:16px;z-index:60;background:#25a244;color:#fff;border-radius:999px;padding:.7rem 1.1rem;display:flex;gap:.5rem;align-items:center;text-decoration:none;font-weight:600;box-shadow:0 6px 20px rgba(0,0,0,.28)}

/* responsive */
@media(max-width:900px){
  .two-col{grid-template-columns:1fr}.side-col{position:static}
  .dest-grid{grid-template-columns:1fr 1fr}.dest,.dest:nth-child(n+4){grid-column:span 1;min-height:220px}
  .dest:first-child{grid-column:span 2}
  .steps,.inc-grid,.foot-grid{grid-template-columns:1fr}
  .strip-grid{grid-template-columns:1fr 1fr}
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;align-items:flex-start;padding:1rem 16px 1.4rem;border-bottom:1px solid var(--line);gap:1rem}
  .nav.open{display:flex}
}
@media(max-width:560px){
  .grid2{grid-template-columns:1fr}.section{padding:52px 0}
  .dest-grid{grid-template-columns:1fr}.dest:first-child{grid-column:span 1}
  .day{grid-template-columns:1fr}.day-n{width:72px}
}

/* bổ sung */
.price.quote{font-family:Fraunces,serif;font-size:1.15rem;font-weight:700;color:var(--jade-d);text-transform:none;letter-spacing:0}
.gap-top{margin-top:3rem}
.main-col>.lead,.article p{max-width:680px}
.article p{font-size:1.05rem;margin:0 0 1.1rem}.article h2{margin-top:2rem}
.steps.four{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.steps.four{grid-template-columns:1fr}}
.nav{flex-wrap:nowrap}
@media(min-width:901px) and (max-width:1100px){.nav{gap:.8rem}.nav a{font-size:.88rem}}