:root{
  --navy:#0a2342;
  --navy-2:#123a63;
  --ocean:#127c99;
  --teal:#2bb3c0;
  --foam:#e8f6f8;
  --sand:#fbf6ec;
  --gold:#f2a33a;
  --gold-2:#e08a12;
  --ink:#16243a;
  --muted:#5b6b80;
  --line:#dce4ec;
  --card:#ffffff;
  --ok:#1f8a5b;
  --err:#c0392b;
  --radius:18px;
  --shadow:0 10px 30px rgba(10,35,66,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--sand);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--ocean)}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em}
h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;color:var(--navy);letter-spacing:-.01em}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ocean);margin-bottom:.6em}
.lead{font-size:1.08rem;color:var(--muted);max-width:720px}
section{padding:72px 0}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,35,66,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:12px}
.brand{color:#fff;font-weight:800;text-decoration:none;font-size:.95rem;letter-spacing:.02em;white-space:nowrap}
.brand span{color:var(--gold)}
.nav-links{display:flex;gap:18px}
.nav-links a{color:#cfe3f0;text-decoration:none;font-size:.9rem;font-weight:500}
.nav-links a:hover{color:#fff}
.nav .btn{padding:8px 16px;font-size:.88rem}
@media (max-width:760px){.nav-links{display:none}}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--gold);color:var(--navy);font-weight:800;text-decoration:none;border:0;border-radius:999px;padding:14px 28px;font-size:1rem;cursor:pointer;font-family:inherit;box-shadow:0 6px 18px rgba(242,163,58,.35);transition:transform .15s,background .15s}
.btn:hover{background:#ffb44f;transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:wait;transform:none}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7);box-shadow:none}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

/* ===== Hero ===== */
.hero{position:relative;min-height:92vh;display:flex;align-items:flex-end;color:#fff;background:#0a2342 url(img/hero-bien.jpg) center/cover no-repeat;padding:0}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,35,66,.25) 0%,rgba(10,35,66,.35) 40%,rgba(10,35,66,.92) 100%)}
.hero .wrap{position:relative;padding-top:120px;padding-bottom:56px}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 14px;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.badge i{width:8px;height:8px;border-radius:50%;background:var(--gold);display:inline-block}
.hero h1{font-size:clamp(2.6rem,9vw,5.6rem);font-weight:900;letter-spacing:-.02em;margin:.35em 0 .2em;text-shadow:0 4px 30px rgba(0,0,0,.3)}
.hero h1 small{display:block;font-size:.32em;font-weight:600;letter-spacing:.02em;opacity:.95;margin-bottom:.4em}
.hero p.sub{font-size:clamp(1.05rem,2.4vw,1.3rem);max-width:640px;margin:0 0 1.6em;color:#e6f1f7}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.deadline{margin-top:22px;display:inline-flex;flex-wrap:wrap;align-items:center;gap:10px;background:rgba(0,0,0,.28);border-radius:14px;padding:10px 16px;font-size:.95rem}
.deadline b{color:var(--gold)}

/* ===== Facts strip ===== */
.facts{background:var(--navy);color:#fff;padding:0}
.facts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.fact{padding:22px 18px;border-right:1px solid rgba(255,255,255,.1)}
.fact:last-child{border-right:0}
.fact .k{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:#9cc3d8;font-weight:600}
.fact .v{font-weight:700;font-size:1.02rem;margin-top:4px}
@media (max-width:760px){.facts-grid{grid-template-columns:1fr 1fr}.fact:nth-child(2){border-right:0}.fact:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}}

/* ===== Letter & values ===== */
.letter{background:#fff}
.letter-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.letter-text p{margin:0 0 1em}
.values{display:grid;gap:14px}
.value{display:flex;gap:14px;align-items:flex-start;background:var(--foam);border-radius:var(--radius);padding:18px}
.value .n{flex:0 0 40px;height:40px;border-radius:12px;background:var(--navy);color:var(--gold);font-weight:900;display:flex;align-items:center;justify-content:center}
.value h3{font-size:1.02rem;margin:0 0 4px;color:var(--navy)}
.value p{margin:0;font-size:.95rem;color:var(--muted)}
@media (max-width:860px){.letter-grid{grid-template-columns:1fr;gap:28px}}

/* ===== Places ===== */
.places-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.place{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.place .ph{position:relative;aspect-ratio:4/3;overflow:hidden;background:#cfdde8}
.place .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.place:hover .ph img{transform:scale(1.05)}
.place .tag{position:absolute;left:12px;top:12px;background:var(--gold);color:var(--navy);font-weight:800;font-size:.75rem;padding:4px 10px;border-radius:999px}
.place .body{padding:18px 20px 22px}
.place h3{font-size:1.15rem;color:var(--navy)}
.place p{margin:0;font-size:.95rem;color:var(--muted)}
.place.wide{grid-column:span 2}
.place.wide .ph{aspect-ratio:16/8}
@media (max-width:900px){.places-grid{grid-template-columns:1fr 1fr}.place.wide{grid-column:span 2}}
@media (max-width:600px){.places-grid{grid-template-columns:1fr}.place.wide{grid-column:auto}.place.wide .ph{aspect-ratio:4/3}}

/* ===== Schedule ===== */
.schedule{background:linear-gradient(180deg,var(--foam),var(--sand))}
.days{margin-top:32px;display:grid;gap:16px}
details.day{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
details.day summary{list-style:none;cursor:pointer;display:flex;gap:16px;align-items:center;padding:18px 20px}
details.day summary::-webkit-details-marker{display:none}
.daynum{flex:0 0 auto;background:var(--navy);color:#fff;border-radius:14px;padding:8px 12px;text-align:center;min-width:70px}
.daynum b{display:block;font-size:1.3rem;color:var(--gold);line-height:1.1}
.daynum span{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase}
.daytitle{flex:1}
.daytitle h3{margin:0;font-size:1.1rem;color:var(--navy)}
.daytitle p{margin:2px 0 0;font-size:.9rem;color:var(--muted)}
.chev{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--foam);display:flex;align-items:center;justify-content:center;transition:transform .2s;color:var(--ocean);font-weight:900}
details[open] .chev{transform:rotate(180deg)}
.timeline{list-style:none;margin:0;padding:4px 20px 22px 20px}
.timeline li{position:relative;display:grid;grid-template-columns:72px 1fr;gap:14px;padding:10px 0;border-top:1px dashed var(--line)}
.timeline li:first-child{border-top:0}
.timeline time{font-weight:800;color:var(--ocean);font-variant-numeric:tabular-nums}
.timeline p{margin:0;font-size:.97rem}

/* ===== Safety ===== */
.safety{background:var(--navy);color:#e3eef6}
.safety h2{color:#fff}
.safety .eyebrow{color:var(--gold)}
.safe-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:28px}
.safe{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:20px}
.safe .ic{font-size:1.5rem;margin-bottom:8px}
.safe p{margin:0;font-size:.95rem}

/* ===== Packages ===== */
.pk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.pk{background:#fff;border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);border:2px solid transparent;display:flex;flex-direction:column;position:relative}
.pk.hot{border-color:var(--gold)}
.pk .ribbon{position:absolute;top:-13px;left:22px;background:var(--gold);color:var(--navy);font-size:.75rem;font-weight:800;padding:4px 12px;border-radius:999px}
.pk h3{color:var(--navy);font-size:1.2rem;margin-bottom:4px}
.pk .price{font-size:2rem;font-weight:900;color:var(--ocean);letter-spacing:-.02em;margin:6px 0 2px}
.pk .per{font-size:.85rem;color:var(--muted);margin-bottom:14px}
.pk ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;font-size:.95rem}
.pk li{padding-left:26px;position:relative}
.pk li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:900}
.pk li.no::before{content:"–";color:#a0aab6}
.pk li.no{color:#8a96a5}
@media (max-width:900px){.pk-grid{grid-template-columns:1fr}}

/* ===== Form ===== */
.register{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 60%,var(--ocean) 100%);color:#fff}
.register h2{color:#fff}
.register .eyebrow{color:var(--gold)}
.register .lead{color:#cfe3f0}
.form-card{background:#fff;color:var(--ink);border-radius:24px;padding:28px;box-shadow:0 20px 50px rgba(0,0,0,.25);margin-top:28px;display:grid;grid-template-columns:1.25fr .75fr;gap:28px}
@media (max-width:900px){.form-card{grid-template-columns:1fr;padding:22px 18px}}
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;font-size:.95rem;margin-bottom:6px;color:var(--navy)}
.field label .req{color:var(--err)}
.field input{width:100%;font:inherit;font-size:16px;padding:13px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fbfdff;color:var(--ink);transition:border .15s,box-shadow .15s}
.field input:focus{outline:none;border-color:var(--ocean);box-shadow:0 0 0 4px rgba(18,124,153,.15)}
.field .hint{font-size:.83rem;color:var(--muted);margin-top:4px}
.field.invalid input{border-color:var(--err)}
.field .msg{display:none;color:var(--err);font-size:.85rem;margin-top:4px}
.field.invalid .msg{display:block}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}
.fs-title{font-weight:800;color:var(--navy);margin:8px 0 10px;font-size:1rem}
.pkrow{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px;border:1.5px solid var(--line);border-radius:14px;margin-bottom:10px;transition:border .15s,background .15s}
.pkrow.active{border-color:var(--ocean);background:var(--foam)}
.pkrow .nm{font-weight:700;color:var(--navy);font-size:.97rem}
.pkrow .pr{font-size:.88rem;color:var(--muted)}
.stepper{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;flex:0 0 auto}
.stepper button{width:40px;height:42px;border:0;background:#f1f5f9;font-size:1.3rem;font-weight:700;color:var(--navy);cursor:pointer;font-family:inherit}
.stepper button:active{background:#e2e8f0}
.stepper input{width:46px;height:42px;border:0;text-align:center;font:inherit;font-weight:800;font-size:16px;color:var(--navy);-moz-appearance:textfield;padding:0}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.pk-msg{display:none;color:var(--err);font-size:.88rem;margin:-2px 0 12px;font-weight:600}
.pk-msg.show{display:block}
.summary{background:var(--sand);border-radius:18px;padding:22px;align-self:start;position:sticky;top:76px}
.summary h3{color:var(--navy);font-size:1.05rem;margin-bottom:12px}
.sum-line{display:flex;justify-content:space-between;gap:10px;font-size:.93rem;padding:6px 0;border-bottom:1px dashed var(--line)}
.sum-line.muted{color:#9aa6b4}
.sum-total{display:flex;justify-content:space-between;align-items:baseline;margin-top:14px;gap:10px}
.sum-total span{font-weight:700;color:var(--navy)}
.sum-total b{font-size:1.7rem;color:var(--ocean);font-weight:900;letter-spacing:-.02em}
.summary .btn{width:100%;margin-top:18px}
.form-err{display:none;background:#fdecea;color:var(--err);border-radius:12px;padding:12px 14px;margin-top:14px;font-size:.92rem;font-weight:600}
.form-err.show{display:block}
.note-small{font-size:.82rem;color:var(--muted);margin-top:10px}

/* ===== Footer ===== */
footer{background:#071a33;color:#9fb6c9;padding:36px 0;font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer b{color:#fff}

/* Ẩn huy hiệu "Powered by Netlify" mà Netlify tự chèn vào trang */
#nl-badge-frame,#nl-hud-frame{display:none!important}

/* ===== Chữ nổi bật & hiệu ứng ===== */
.hl{color:var(--ocean);font-weight:800}
.hl-gold{color:var(--gold);font-weight:800}
.big-word{font-size:1.15em;font-weight:900}
/* Từ khóa: chỉ đổi màu chữ, không tô nền */
.mark{color:#c2560c;font-weight:700}
/* Hiện dần khi cuộn tới */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* Giá chính thức — ánh kim chạy + nhịp đập */
@keyframes shine{to{background-position:200% center}}
@keyframes beat{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
@keyframes ring{0%{box-shadow:0 0 0 0 rgba(242,163,58,.75)}70%{box-shadow:0 0 0 18px rgba(242,163,58,0)}100%{box-shadow:0 0 0 0 rgba(242,163,58,0)}}
.price-hot{display:inline-block;background:linear-gradient(90deg,var(--ocean) 0%,var(--gold-2) 25%,#ffcf6b 50%,var(--gold-2) 75%,var(--ocean) 100%);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;animation:shine 3s linear infinite,beat 1.8s ease-in-out infinite;font-weight:900}
.price-hot.on-dark{background-image:linear-gradient(90deg,#ffd27a 0%,#fff6d8 25%,var(--gold) 50%,#fff6d8 75%,#ffd27a 100%)}
.price-chip{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:6px 10px;margin:0 0 22px;background:rgba(10,35,66,.55);border:2px solid var(--gold);border-radius:18px;padding:10px 18px;animation:ring 2s infinite}
.price-chip .lbl{font-size:.85rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700;color:#ffe2ad}
.price-chip .price-hot{font-size:clamp(1.8rem,6vw,2.6rem);letter-spacing:-.02em}
.price-chip .unit{font-size:.95rem;color:#e6f1f7}
.pk.hot .price{font-size:2.4rem}
.pk.hot{animation:ring 2.4s infinite}
.official{display:inline-block;background:var(--navy);color:var(--gold);font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:999px;margin-bottom:6px}
@media (prefers-reduced-motion:reduce){.price-hot,.price-chip,.pk.hot{animation:none}.js .reveal{opacity:1;transform:none}}

/* ===== Nhà khách + video ===== */
.stay{background:var(--navy);color:#e3eef6}
.stay h2{color:#fff}
.stay .eyebrow{color:var(--gold)}
.stay-grid{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:center}
.phone{background:#000;border-radius:32px;padding:10px;box-shadow:0 24px 60px rgba(0,0,0,.45);border:2px solid rgba(255,255,255,.15);max-width:340px;width:100%;margin:0 auto}
.phone video{width:100%;aspect-ratio:9/16;border-radius:24px;display:block;background:#000;object-fit:cover}
.stay-text p{margin:0 0 1em}
.stay-photo{border-radius:var(--radius);margin-top:8px;aspect-ratio:16/8;object-fit:cover;width:100%}
.credit{font-size:.8rem;color:#8fa9bf;margin-top:10px!important}
@media (max-width:820px){.stay-grid{grid-template-columns:1fr;gap:28px}.phone{max-width:300px}}
.place.full{grid-column:1/-1}
.place.full .ph{aspect-ratio:21/8}
@media (max-width:600px){.place.full .ph{aspect-ratio:4/3}}
.lead .price-hot{margin:0 4px}
.form-card.closed{display:block;text-align:center;padding:40px 22px}
.closed-ic{font-size:2.4rem;margin-bottom:8px}
.closed-box h3{color:var(--navy);font-size:1.4rem;margin-bottom:8px}
.closed-box p{color:var(--muted);margin:0 0 8px}