:root{--navy:#0d2036;--navy2:#16345a;--gold:#b8925a;--gold2:#c9a874;--cream:#faf8f3;--ink:#17202e;--muted:#5a6472;--line:#eee7d9;--soft:#f2ede3;}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Be Vietnam Pro',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:var(--cream);-webkit-font-smoothing:antialiased;line-height:1.65;}
a{color:var(--gold);text-decoration:none;}
img{max-width:100%;display:block;}
.serif,h1,h2,h3{font-family:'Playfair Display',Georgia,serif;}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px;}

/* header */
.lp-head{position:sticky;top:0;z-index:50;background:rgba(250,248,243,.93);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.lp-head .wrap{display:flex;align-items:center;gap:16px;padding:13px 22px;}
.lp-brand{display:flex;align-items:center;gap:11px;}
.lp-brand img{width:48px;height:48px;}
.lp-brand b{font-family:'Playfair Display',serif;color:var(--navy);font-size:18px;font-weight:700;letter-spacing:.5px;line-height:1.05;display:block;}
.lp-brand i{font-style:normal;color:var(--gold);font-size:9px;letter-spacing:3px;font-weight:600;}
.lp-head nav{margin-left:auto;display:flex;align-items:center;gap:22px;}
.lp-head nav a{color:#2c3646;font-size:14px;font-weight:500;}
.lp-head nav a:hover{color:var(--gold);}
.lp-head .lp-tel{background:var(--navy);color:#fff;padding:10px 18px;border-radius:7px;font-size:14px;font-weight:600;white-space:nowrap;}
/* Menu "Dịch vụ" thả xuống (desktop) */
.lp-dd{position:relative;display:flex;align-items:center;}
.lp-dd-t{color:#2c3646;font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:5px;cursor:pointer;}
.lp-dd-cr{font-size:9px;color:var(--gold);transition:transform .2s;}
.lp-dd:hover .lp-dd-cr{transform:rotate(180deg);}
.lp-dd-p{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);min-width:250px;background:#fff;border:1px solid #ece5d6;border-radius:13px;box-shadow:0 20px 46px rgba(13,32,54,.15);padding:10px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,transform .18s ease;z-index:60;}
.lp-dd:hover .lp-dd-p,.lp-dd:focus-within .lp-dd-p{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(6px);}
.lp-dd-p::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px;}
.lp-dd-h{font-size:10px;letter-spacing:1.3px;font-weight:700;color:var(--gold);text-transform:uppercase;padding:10px 12px 5px;}
.lp-dd-h:first-child{padding-top:4px;}
.lp-dd-p a{display:block;padding:9px 12px;border-radius:8px;color:#22303f;font-size:13.5px;font-weight:500;white-space:nowrap;}
.lp-dd-p a:hover{background:#f6f1e7;color:var(--navy);}
@media(max-width:760px){.lp-head nav a:not(.lp-tel){display:none;}.lp-head nav .lp-dd{display:none;}.lp-brand i{display:none;}}

/* hero */
.lp-hero{position:relative;color:#fff;padding:70px 0 60px;background:linear-gradient(100deg,rgba(6,16,30,.94),rgba(10,25,45,.55) 60%,rgba(12,32,54,.15)),#0d2036 center/cover no-repeat;}
.lp-hero .in{max-width:640px;}
.lp-eyebrow{display:inline-block;border:1px solid rgba(184,146,90,.55);color:#e0c79a;padding:6px 15px;border-radius:100px;font-size:11.5px;letter-spacing:1.5px;font-weight:600;margin-bottom:20px;text-transform:uppercase;}
.lp-hero h1{font-size:clamp(30px,5.6vw,50px);line-height:1.08;letter-spacing:-.5px;margin-bottom:16px;text-shadow:0 2px 22px rgba(0,0,0,.4);}
.lp-hero p{font-size:clamp(15px,2.3vw,17.5px);color:#dbe3ee;max-width:540px;margin-bottom:20px;}
.lp-price-badge{display:inline-flex;align-items:baseline;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(184,146,90,.4);border-radius:12px;padding:12px 18px;margin-bottom:26px;}
.lp-price-badge .n{font-family:'Playfair Display',serif;font-size:26px;font-weight:800;color:var(--gold2);}
.lp-price-badge .u{font-size:13px;color:#bcc8d8;}
.lp-cta-row{display:flex;gap:14px;flex-wrap:wrap;}
.lp-btn{display:inline-flex;align-items:center;gap:8px;background:var(--gold);color:var(--navy);padding:14px 26px;border-radius:8px;font-size:15px;font-weight:700;transition:transform .15s,filter .15s;}
.lp-btn:hover{transform:translateY(-2px);filter:brightness(1.05);}
.lp-btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff;}
.lp-btn.ghost:hover{background:rgba(255,255,255,.1);}

/* breadcrumb */
.lp-bc{background:var(--soft);border-bottom:1px solid var(--line);font-size:12.5px;color:var(--muted);}
.lp-bc .wrap{padding:11px 22px;}
.lp-bc a{color:var(--muted);}.lp-bc a:hover{color:var(--gold);}
.lp-bc span{color:var(--ink);}

/* sections */
.lp-sec{padding:60px 0;}
.lp-sec.alt{background:#fff;}
.lp-kick{color:var(--gold);font-size:12.5px;letter-spacing:3px;font-weight:600;text-transform:uppercase;margin-bottom:12px;}
.lp-sec h2{font-size:clamp(26px,4vw,36px);font-weight:700;line-height:1.15;letter-spacing:-.3px;margin-bottom:18px;text-wrap:balance;}
.lp-sec .lead{font-size:16.5px;color:var(--muted);max-width:70ch;margin-bottom:8px;}
.lp-sec p{margin-bottom:14px;color:var(--ink);}
.lp-sec .prose p{color:#3f4a5a;}

/* feature grid */
.lp-feat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;}
.lp-feat-card{background:var(--cream);border:1px solid var(--line);border-radius:14px;padding:24px 22px;}
.lp-sec.alt .lp-feat-card{background:var(--cream);}
.lp-feat-card .ic{color:var(--gold);font-size:24px;margin-bottom:10px;}
.lp-feat-card h3{font-size:18px;font-weight:700;margin-bottom:7px;}
.lp-feat-card p{font-size:14px;color:var(--muted);margin:0;}
@media(max-width:820px){.lp-feat{grid-template-columns:1fr;}}

/* price table */
.lp-table{width:100%;border-collapse:collapse;margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.lp-table th,.lp-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px;}
.lp-table th{background:var(--navy);color:#fff;font-weight:600;font-family:'Be Vietnam Pro',sans-serif;}
.lp-table td:last-child{font-family:'Playfair Display',serif;font-weight:700;color:var(--navy);white-space:nowrap;}
.lp-table tr:last-child td{border-bottom:none;}
.lp-note{font-size:13px;color:var(--muted);margin-top:12px;font-style:italic;}

/* specs */
.lp-specs{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;margin-top:22px;}
.lp-specs .row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.lp-specs .row b{color:var(--muted);font-weight:600;}
.lp-specs .row span{color:var(--ink);font-weight:600;text-align:right;}
@media(max-width:700px){.lp-specs{grid-template-columns:1fr;}}

/* gallery */
.lp-gal{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px;}
.lp-gal img{width:100%;height:180px;object-fit:cover;border-radius:12px;border:1px solid var(--line);}
.lp-gal img:first-child{grid-column:span 2;grid-row:span 2;height:100%;}
@media(max-width:700px){.lp-gal{grid-template-columns:repeat(2,1fr);}.lp-gal img{height:130px;}.lp-gal img:first-child{grid-column:span 2;height:200px;}}

/* use cases */
.lp-use{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px;}
.lp-use li{list-style:none;display:flex;gap:12px;background:var(--soft);border-radius:12px;padding:18px 20px;}
.lp-use .ic{color:var(--gold);font-size:20px;flex:none;}
.lp-use b{display:block;font-size:15.5px;margin-bottom:3px;}
.lp-use p{font-size:13.5px;color:var(--muted);margin:0;}
@media(max-width:700px){.lp-use{grid-template-columns:1fr;}}

/* steps */
.lp-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;counter-reset:s;}
.lp-steps .st{text-align:center;padding:0 10px;}
.lp-steps .st .num{counter-increment:s;width:48px;height:48px;margin:0 auto 12px;border-radius:50%;background:var(--navy);color:#fff;font-family:'Playfair Display',serif;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.lp-steps .st .num::before{content:counter(s);}
.lp-steps .st h3{font-size:17px;margin-bottom:6px;}
.lp-steps .st p{font-size:13.5px;color:var(--muted);margin:0;}
@media(max-width:700px){.lp-steps{grid-template-columns:1fr;gap:26px;}}

/* faq */
.lp-faq{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.lp-faq details{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.lp-sec.alt .lp-faq details{background:var(--cream);}
.lp-faq summary{padding:18px 22px;font-weight:600;font-size:15.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:14px;color:var(--navy);}
.lp-faq summary::-webkit-details-marker{display:none;}
.lp-faq summary::after{content:"+";color:var(--gold);font-size:22px;line-height:1;}
.lp-faq details[open] summary::after{content:"–";}
.lp-faq .a{padding:0 22px 20px;font-size:14.5px;line-height:1.7;color:var(--muted);}

/* cta band */
.lp-band{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;text-align:center;padding:56px 22px;}
.lp-band h2{font-size:clamp(24px,3.6vw,34px);margin-bottom:12px;color:#fff;}
.lp-band p{color:#bcc8d8;max-width:56ch;margin:0 auto 22px;font-size:15.5px;}
.lp-band .lp-cta-row{justify-content:center;}

/* related */
.lp-rel{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.lp-rel a{background:#fff;border:1px solid var(--line);border-radius:100px;padding:10px 18px;font-size:14px;font-weight:600;color:var(--navy);}
.lp-rel a:hover{border-color:var(--gold);color:var(--gold);}

/* footer */
.lp-foot{background:#081726;color:#8fa0b5;padding:44px 22px 30px;text-align:center;}
.lp-foot .fb{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:12px;}
.lp-foot .fb img{width:36px;height:36px;}
.lp-foot .fb b{font-family:'Playfair Display',serif;color:#fff;font-size:18px;}
.lp-foot p{max-width:60ch;margin:0 auto 10px;font-size:13.5px;line-height:1.7;}
.lp-foot .fn{margin-top:16px;font-size:12px;color:#5f7085;}
.lp-foot a{color:#c9a874;}

/* FAB */
.dvfab{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));z-index:900;display:flex;flex-direction:column;gap:12px;align-items:flex-end;}.dvfab-btn{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(0,0,0,.28);position:relative;transition:transform .18s;-webkit-tap-highlight-color:transparent;}.dvfab-btn:hover{transform:scale(1.06);}.dvfab-btn:focus-visible{outline:3px solid #b8925a;outline-offset:2px;}.dvfab-zalo{background:#0068FF;padding:0;overflow:hidden;}.dvfab-zalo img{width:100%;height:100%;display:block;}.dvfab-wa{background:#25D366;}.dvfab-wa svg{width:30px;height:30px;}.dvfab-call{background:#b8925a;color:#0d2036;}.dvfab-call svg{width:25px;height:25px;position:relative;z-index:1;}.dvfab-ring{position:absolute;inset:0;border-radius:50%;box-shadow:0 0 0 2px #b8925a;animation:dvfab-pulse 1.9s ease-out infinite;}@keyframes dvfab-pulse{0%{transform:scale(1);opacity:.75;}100%{transform:scale(1.65);opacity:0;}}@media(max-width:600px){.dvfab-btn{width:56px;height:56px;}.dvfab-call svg{width:26px;height:26px;}.dvfab-wa svg{width:31px;height:31px;}}@media(prefers-reduced-motion:reduce){.dvfab-ring{display:none;}.dvfab-btn{transition:none;}}