:root{--red:#e63946;--red-d:#c42b38;--navy:#1d1b3a;--yellow:#ffc933;--bg:#fffaf5;--text:#2b2b3a;--muted:#6b6b7b;--line:#eee2d6;--card:#fff;--r:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.65;font-size:17px;padding-bottom:70px}
img,svg{max-width:100%;height:auto}
a{color:var(--red-d)}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
h1,h2,h3{line-height:1.25;color:var(--navy);margin:0 0 .5em}
h1{font-size:clamp(1.7rem,4.5vw,2.6rem)}
h2{font-size:clamp(1.3rem,3vw,1.8rem);margin-top:0}
h3{font-size:1.1rem}
.lead{font-size:1.15rem;color:#444}
.eyebrow{color:var(--red-d);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.85rem;margin:0 0 .5em}
.meta{color:var(--muted);font-size:.9rem}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:62px;gap:12px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--navy);text-decoration:none;font-size:1.15rem}
.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--red);font-size:20px}
.nav{display:flex;align-items:center;gap:18px}
.nav a{text-decoration:none;color:var(--navy);font-weight:600;font-size:.95rem}
.nav a:hover{color:var(--red)}
.nav .btn{color:#fff}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:1.3rem;padding:4px 10px;cursor:pointer}
@media(max-width:860px){
.nav-toggle{display:block}
.nav{display:none;position:absolute;left:0;right:0;top:62px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px 16px 16px;gap:4px}
.nav.open{display:flex}
.nav a{padding:10px 4px}
.nav .btn{text-align:center}
}

/* buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:1rem;font-family:inherit;text-align:center}
.btn-sm{padding:8px 16px;font-size:.9rem}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d)}
.btn-ghost{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-ghost:hover{background:var(--navy);color:#fff}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}

/* hero */
.hero{background:linear-gradient(135deg,#fff1e0 0%,#ffe0e3 100%);padding:48px 0 40px}
.hero-in{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;align-items:center}
.hero-art{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;font-size:clamp(3rem,10vw,5.5rem)}
.hero-art span{background:#fff;border-radius:24px;padding:12px 22px;box-shadow:0 10px 30px rgba(230,57,70,.15)}
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.ticks li::before{content:"✓ ";color:var(--red);font-weight:800}
@media(max-width:760px){.hero-in{grid-template-columns:1fr}.hero-art{order:-1;font-size:3rem}}

/* blocks */
.block{margin:44px auto}
.page{padding:8px 0 40px}
.page .block{margin:32px 0}
.page ul,.page ol{padding-left:1.3em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.cards.three{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-decoration:none;color:inherit;transition:.2s}
a.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(0,0,0,.08);border-color:var(--red)}
.card p{color:var(--muted);font-size:.95rem;margin:.3em 0 .6em}
.card-icon{font-size:2rem}
.more{color:var(--red-d);font-weight:700;font-size:.92rem}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 16px;text-decoration:none;font-weight:600;color:var(--navy)}
.chips a:hover{background:var(--red);color:#fff;border-color:var(--red)}
.crumbs{font-size:.88rem;color:var(--muted);padding:14px 0}
.crumbs a{color:var(--muted)}

/* faq */
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy)}
.faq p{margin:.6em 0 0}

/* cta box */
.cta-box{background:var(--navy);color:#fff;border-radius:var(--r);padding:28px 24px;margin:40px 0;text-align:center}
.cta-box h2{color:#fff}
.cta-box .btn-ghost{border-color:#fff;color:#fff}
.cta-box .btn-ghost:hover{background:#fff;color:var(--navy)}
.cta-box .cta-row{justify-content:center}

/* form */
.form{display:grid;gap:14px;max-width:560px;margin:24px 0}
.form label{display:grid;gap:4px;font-weight:600;font-size:.95rem}
.form input,.form select,.form textarea{padding:11px 12px;border:1px solid #d9cbbd;border-radius:10px;font:inherit;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--red);border-color:var(--red)}
.hint{color:var(--muted);font-size:.9rem;margin:0}
.contact{list-style:none;padding:0}
.contact li{margin:8px 0}

/* footer */
.site-footer{background:#15132b;color:#cfcde0;padding:40px 0 16px;margin-top:40px;font-size:.93rem}
.site-footer a{color:#ffd9dc}
.site-footer strong{color:#fff;display:block;margin-bottom:8px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.foot-grid p{margin:.3em 0}
.copy{margin-top:24px;padding-top:14px;border-top:1px solid #2c2a48;color:#8f8daa;font-size:.85rem}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr}}

/* floating contact */
.float-cta{position:fixed;right:12px;bottom:14px;z-index:60;display:flex;flex-direction:column;gap:8px}
.fc{display:block;padding:12px 18px;border-radius:999px;color:#fff;font-weight:700;text-decoration:none;box-shadow:0 6px 18px rgba(0,0,0,.25);text-align:center}
.fc-zalo{background:#0068ff}
.fc-call{background:var(--red)}
@media(min-width:861px){body{padding-bottom:0}}

/* images */
.logo-img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.wm{letter-spacing:-.01em}.wm b{color:var(--red)}
.hero-img{width:100%;height:auto;border-radius:20px;box-shadow:0 14px 36px rgba(230,57,70,.2);aspect-ratio:4/3;object-fit:cover}
.hero-art{display:block}
.card-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;margin-bottom:10px}
.cover-img{width:100%;max-height:420px;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);margin:8px 0 0}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;border:1px solid var(--line)}

/* v2: bố cục thẻ dịch vụ, quy trình, tinh chỉnh */
h2{position:relative;padding-bottom:.45em}
h2::after{content:"";display:block;width:44px;height:4px;border-radius:4px;background:var(--yellow);margin-top:.35em}
.cta-box h2::after,.band h2::after{margin-left:auto;margin-right:auto}
.cards.svc{grid-template-columns:repeat(6,1fr)}
.cards.svc .card{grid-column:span 2}
.cards.svc .card:nth-child(-n+2){grid-column:span 3}
.cards.svc .card:nth-child(-n+2) .card-img{aspect-ratio:16/9}
.card-ph{display:grid;place-items:center;width:100%;aspect-ratio:4/3;border-radius:10px;margin-bottom:10px;font-size:3.4rem;background:linear-gradient(135deg,#ffe0e3,#fff1c9)}
.cards.svc .card:nth-child(2) .card-ph{aspect-ratio:16/9}
@media(max-width:900px){.cards.svc{grid-template-columns:repeat(2,1fr)}.cards.svc .card,.cards.svc .card:nth-child(-n+2){grid-column:span 1}.cards.svc .card:last-child{grid-column:span 2}}
@media(max-width:560px){.cards.svc{grid-template-columns:1fr}.cards.svc .card,.cards.svc .card:last-child{grid-column:span 1}}
.band{background:var(--navy);color:#fff;padding:44px 0;margin:48px 0;text-align:center}
.band h2{color:#fff}
.steps{list-style:none;padding:0;margin:24px 0 8px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;counter-reset:s;text-align:left}
.steps li{counter-increment:s;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:20px 18px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--yellow);color:var(--navy);font-weight:800;margin-bottom:10px}
.steps b{display:block;font-size:1.05rem;margin-bottom:4px}
.steps span{color:#d5d3e6;font-size:.95rem}
.cta-row.center{justify-content:center}
.hero h1{letter-spacing:-.02em}
.card{box-shadow:0 2px 8px rgba(29,27,58,.04)}

@media(max-width:860px){
.float-cta{left:0;right:0;bottom:0;flex-direction:row;gap:0;padding:0;box-shadow:0 -4px 16px rgba(0,0,0,.15)}
.float-cta .fc{flex:1;border-radius:0;box-shadow:none;padding:14px 8px}
}

/* v3: mặt tiền dạng ảnh ghép */
.hero{position:relative;overflow:hidden;padding:56px 0 52px;background:
radial-gradient(420px 300px at 92% 8%,rgba(255,201,51,.45),transparent 70%),
radial-gradient(360px 280px at 4% 96%,rgba(230,57,70,.18),transparent 70%),
linear-gradient(135deg,#fff3e3 0%,#ffe3e6 100%)}
.hero h1{font-size:clamp(1.9rem,4.8vw,3rem)}
.hero-in{grid-template-columns:1.05fr 1fr;gap:36px}
.collage{position:relative;display:grid;grid-template-columns:1.1fr .9fr;grid-template-rows:1fr 1fr;gap:14px;padding:10px 8px 22px}
.cl{background:#fff;padding:6px;border-radius:18px;box-shadow:0 14px 34px rgba(29,27,58,.18);overflow:hidden}
.cl img{width:100%;height:100%;object-fit:cover;border-radius:13px;display:block;aspect-ratio:auto}
.c1{grid-row:span 2;transform:rotate(-2.2deg)}
.c2{transform:rotate(2.4deg);aspect-ratio:4/3}
.c3{transform:rotate(-1.4deg);aspect-ratio:4/3}
.bd{position:absolute;background:#fff;color:var(--navy);font-weight:700;font-size:.85rem;padding:7px 14px;border-radius:999px;box-shadow:0 8px 20px rgba(29,27,58,.2);white-space:nowrap}
.b1{left:-6px;top:6px;background:var(--red);color:#fff;transform:rotate(-5deg)}
.b2{right:-4px;top:46%;transform:rotate(4deg)}
.b3{left:34%;bottom:-2px;background:var(--yellow);transform:rotate(-3deg)}
@media(max-width:760px){
.hero{padding:30px 0 34px}
.hero-in{grid-template-columns:1fr;gap:18px}
.collage{order:-1;gap:10px;padding:8px 4px 20px}
.bd{font-size:.75rem;padding:5px 10px}
.b2{right:0}
}

/* v4: đầu trang theo logo */
.bar{min-height:70px}
.logo{gap:10px}
.logo-img{width:54px;height:54px}
.wm{display:flex;flex-direction:column;line-height:1.15;font-size:1.08rem;letter-spacing:0}
.wm small{font-size:.74rem;font-weight:600;color:var(--muted);margin-top:1px}
@media(max-width:860px){.nav{top:70px}}
@media(max-width:400px){.wm{font-size:.95rem}.logo-img{width:46px;height:46px}}
.wm{white-space:nowrap}
.hot{margin:6px 0 0;color:#d5d3e6;font-size:.95rem}.hot a{color:var(--yellow);font-weight:700}