/* Thiệp Cưới Hay — Marketing SaaS */
:root{
  --bg:#faf7f2;--bg2:#f3ebe1;--ink:#1c1712;--muted:#6b5f54;
  --gold:#9a7b52;--gold2:#c4a574;--line:rgba(28,23,18,.08);
  --card:#fffcf8;--dark:#14110e;
  --serif:'Cormorant Garamond',Georgia,serif;
  --script:'Great Vibes',cursive;
  --sans:'Manrope','Be Vietnam Pro',system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);--radius:18px;
  --shadow:0 24px 60px rgba(28,23,18,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,92%);margin:0 auto}
.nav{position:fixed;inset:0 0 auto;z-index:50;padding:14px 0;transition:.3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(250,247,242,.88);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:1.2rem;font-weight:500}
.logo img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:26px;list-style:none;font-size:.92rem}
.nav-links a{opacity:.78;transition:opacity .2s}
.nav-links a:hover,.nav-links a.active{opacity:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:500;font-size:.92rem;border:1px solid transparent;transition:transform .25s var(--ease),box-shadow .25s,background .25s;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#6f5535,var(--gold));color:#fff;box-shadow:0 12px 28px rgba(154,123,82,.28)}
.btn-ghost{background:transparent;border-color:rgba(28,23,18,.16)}
.btn-light{background:#fff;color:var(--ink)}
.btn-lg{padding:14px 26px;font-size:1rem}
.nav-cta{padding:10px 18px;font-size:.88rem}
.nav-toggle{display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--ink);margin:7px 8px;border-radius:2px}

.hero{position:relative;padding:130px 0 80px;overflow:hidden;background:
  radial-gradient(ellipse 60% 50% at 80% 20%,rgba(196,165,116,.18),transparent 60%),
  radial-gradient(ellipse 50% 40% at 10% 80%,rgba(180,140,120,.12),transparent 55%),
  linear-gradient(180deg,#fbf8f3,#f3ebe1)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.65);border:1px solid var(--line);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:22px}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(2.6rem,5.2vw,4.1rem);line-height:1.12;letter-spacing:-.01em;margin-bottom:18px}
.hero h1 em{font-style:italic;color:var(--gold);font-weight:400;font-family:var(--script);font-size:1.15em}
.hero-lead{font-size:1.05rem;color:var(--muted);max-width:42ch;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.hero-metrics{display:flex;gap:28px;flex-wrap:wrap}
.hero-metrics b{display:block;font-family:var(--serif);font-size:1.7rem;font-weight:500}
.hero-metrics span{font-size:.82rem;color:var(--muted)}

.phone-stack{position:relative;height:560px;display:grid;place-items:center}
.phone{position:absolute;width:250px;aspect-ratio:9/16;border-radius:28px;background:#111;padding:9px;box-shadow:var(--shadow)}
.phone img{width:100%;height:100%;object-fit:cover;border-radius:20px}
.phone.p1{transform:translate(-70px,20px) rotate(-8deg);z-index:1;opacity:.85}
.phone.p2{z-index:3}
.phone.p3{transform:translate(70px,30px) rotate(7deg);z-index:2;opacity:.9}

.section{padding:88px 0}
.section.tint{background:var(--bg2)}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(2rem,3.6vw,2.8rem);line-height:1.2;margin-bottom:12px}
.section-head h2 em{font-style:italic;color:var(--gold);font-family:var(--script);font-size:1.12em}
.section-head p{color:var(--muted)}

.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pain-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px 24px;box-shadow:var(--shadow)}
.pain-card .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:rgba(154,123,82,.1);color:var(--gold);font-size:1.4rem;margin-bottom:16px}
.pain-card h3{font-family:var(--serif);font-weight:500;font-size:1.25rem;margin-bottom:8px}
.pain-card p{color:var(--muted);font-size:.95rem}

.tpl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tpl-card{background:var(--card);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s var(--ease)}
.tpl-card:hover{transform:translateY(-4px)}
.tpl-cover{display:block;aspect-ratio:3/4;position:relative;background:#2a241e center/cover no-repeat;min-height:280px}
.tpl-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.55))}
.tpl-cover .tag{position:absolute;top:14px;left:14px;z-index:1;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.9);font-size:.72rem;letter-spacing:.06em}
.tpl-meta{padding:18px 18px 20px}
.tpl-meta h3{font-family:var(--serif);font-weight:500;font-size:1.2rem}
.tpl-meta p{color:var(--muted);font-size:.88rem;margin:4px 0 14px}
.tpl-meta .row{display:flex;gap:8px;flex-wrap:wrap}
.tpl-meta .row a{font-size:.82rem;padding:8px 14px}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{padding:26px 22px;border-radius:20px;background:var(--card);border:1px solid var(--line)}
.feat h3{font-family:var(--serif);font-weight:500;font-size:1.15rem;margin:10px 0 8px}
.feat p{color:var(--muted);font-size:.92rem}
.feat .num{font-family:var(--serif);color:var(--gold);font-size:1.4rem}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:s}
.step{position:relative;padding:28px 24px;border-radius:22px;background:var(--card);border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:22px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#6f5535,var(--gold));color:#fff;font-family:var(--serif);font-size:1.05rem}
.step h3{font-family:var(--serif);font-weight:500;font-size:1.2rem;margin:10px 0 8px}
.step p{color:var(--muted);font-size:.92rem}

.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.price{padding:32px 26px;border-radius:24px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column}
.price.featured{background:var(--dark);color:#f7efe4;border-color:transparent;transform:scale(1.03)}
.price.featured .muted,.price.featured li{color:rgba(247,239,228,.72)}
.price .plan{font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.price h3{font-family:var(--serif);font-weight:500;font-size:1.8rem;margin-bottom:6px}
.price .amt{font-family:var(--serif);font-size:2.4rem;font-weight:500;margin:12px 0}
.price .amt small{font-size:1rem;opacity:.7}
.price ul{list-style:none;margin:18px 0 28px;flex:1}
.price li{padding:8px 0 8px 22px;position:relative;font-size:.92rem}
.price li::before{content:"✓";position:absolute;left:0;color:var(--gold)}
.price .btn{width:100%}

.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quote{padding:28px 24px;border-radius:22px;background:var(--card);border:1px solid var(--line)}
.quote p{font-family:var(--serif);font-size:1.15rem;font-style:italic;line-height:1.45;margin-bottom:16px}
.quote cite{font-style:normal;font-size:.88rem;color:var(--muted)}

.faq{max-width:760px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold);font-size:1.2rem}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--muted);margin-top:12px;font-size:.95rem}

.cta-band{padding:72px 0;text-align:center;background:linear-gradient(135deg,#1a1510,#3a2e24);color:#f7efe4}
.cta-band h2{font-family:var(--serif);font-weight:500;font-size:clamp(2rem,3.5vw,2.8rem);margin-bottom:14px}
.cta-band p{opacity:.78;margin-bottom:28px}
.cta-band .btn-primary{background:linear-gradient(135deg,#c4a574,#9a7b52)}

.footer{padding:48px 0 28px;border-top:1px solid var(--line);background:#f7f1e8}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;margin-bottom:28px}
.footer h4{font-family:var(--serif);font-weight:500;margin-bottom:12px}
.footer a{display:block;color:var(--muted);font-size:.9rem;margin:6px 0}
.footer a:hover{color:var(--ink)}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:18px;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted)}

@media (max-width:960px){
  .hero-grid,.pain-grid,.tpl-grid,.feat-grid,.steps,.price-grid,.quotes,.footer-grid{grid-template-columns:1fr 1fr}
  .phone-stack{height:420px}
  .phone{width:190px}
  .price.featured{transform:none}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;padding:18px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
}
@media (max-width:640px){
  .hero{padding:110px 0 56px}
  .hero-grid,.pain-grid,.tpl-grid,.feat-grid,.steps,.price-grid,.quotes,.footer-grid{grid-template-columns:1fr}
  .phone.p1,.phone.p3{display:none}
  .section{padding:64px 0}
}


/* Homepage commercial gallery */
.home-gal{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:960px){.home-gal{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.home-gal{grid-template-columns:1fr 1fr;gap:12px}}