/* FANPAK Việt Nam – style.css */
:root{
  --blue:#2C4887; --blue-d:#1d3266; --blue-dd:#14234a; --blue-l:#e9eef8;
  --green:#1f9d57; --green-l:#e6f5ec; --zalo:#0068ff;
  --ink:#1b2333; --ink-2:#4a5468; --muted:#7a8396; --line:#e3e7ef; --bg:#ffffff; --bg-2:#f5f7fb;
  --radius:14px; --shadow:0 6px 24px rgba(20,35,74,.08); --shadow-h:0 12px 32px rgba(20,35,74,.14);
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Montserrat",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d)}
h1,h2,h3{line-height:1.25;margin:0 0 .6em;color:var(--blue-dd)}
h1{font-size:clamp(1.7rem,3.6vw,2.6rem);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(1.35rem,2.4vw,1.9rem);font-weight:700}
h3{font-size:1.08rem;font-weight:700}
p{margin:0 0 1em}
svg{width:1.1em;height:1.1em;fill:currentColor;flex:none}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
.center{text-align:center}.mt{margin-top:28px}.small{font-size:.86rem}.muted{color:var(--muted)}
.rounded{border-radius:var(--radius)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.72em 1.25em;border-radius:999px;font-weight:600;font-size:.97rem;border:2px solid transparent;transition:.18s;cursor:pointer;white-space:nowrap}
.btn-lg{padding:.9em 1.5em;font-size:1rem}
.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn-zalo{background:var(--zalo);color:#fff}.btn-zalo:hover{background:#0055d4;color:#fff}
.btn-zalo svg{width:1.5em;height:1.5em}
.btn-outline{border-color:var(--blue);color:var(--blue);background:#fff}.btn-outline:hover{background:var(--blue);color:#fff}
.btn-light{background:#fff;color:var(--blue-dd)}.btn-light:hover{background:var(--blue-l);color:var(--blue-dd)}
.btn svg:last-child:not(:first-child){transition:transform .18s}.btn:hover svg:last-child:not(:first-child){transform:translateX(3px)}

/* topbar + header */
.topbar{background:var(--blue-dd);color:#cdd6ea;font-size:.83rem}
.topbar-in{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:6px;padding-bottom:6px}
.topbar a{color:#fff;display:inline-flex;align-items:center;gap:6px;margin-left:18px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{width:150px;height:auto}
.logo-vn{font-size:.72rem;font-weight:700;letter-spacing:.2em;color:var(--blue);border-left:2px solid var(--line);padding-left:10px;line-height:1.2}
.main-nav{margin-left:auto}
.main-nav>ul{list-style:none;display:flex;gap:4px;margin:0;padding:0}
.main-nav a{display:block;padding:10px 14px;border-radius:8px;color:var(--ink);font-weight:600;font-size:.96rem}
.main-nav a:hover,.main-nav a.active{color:var(--blue);background:var(--blue-l)}
.has-sub{position:relative}
.sub{display:none;position:absolute;top:100%;left:0;min-width:290px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-h);list-style:none;padding:8px;margin:0}
.sub a{font-weight:500;font-size:.93rem}
.has-sub:hover .sub,.has-sub:focus-within .sub{display:block}
.header-cta{padding:.6em 1.1em}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;padding:8px;color:var(--blue-dd);cursor:pointer}
.nav-toggle svg{width:28px;height:28px}

/* hero */
.hero{background:linear-gradient(135deg,#f3f6fc 0%,#e7eefa 55%,#dfe8f7 100%);overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:56px}
.eyebrow{color:var(--green);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.82rem;margin-bottom:.6em}
.hero h1 span{color:var(--blue)}
.lead{font-size:1.1rem;color:var(--ink-2);max-width:40em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
.hero-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--ink-2);font-weight:500;font-size:.95rem}
.hero-points li{display:flex;align-items:center;gap:6px}.hero-points svg{color:var(--green)}
.hero-img{border-radius:20px;box-shadow:var(--shadow-h);background:#fff}

/* stats */
.stats{background:var(--blue);color:#fff}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:28px;padding-bottom:28px}
.stats b{display:block;font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800}
.stats span{color:#cfd9f0;font-size:.92rem}

/* sections */
.section{padding:64px 0}
.section-alt{background:var(--bg-2)}
.section-dark{background:var(--blue-dd);color:#d6def0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 36px}
.sec-head p:last-child{color:var(--ink-2)}
.sec-head.light h2{color:#fff}
.page-head{background:linear-gradient(135deg,#f3f6fc,#e3ebf8);padding:38px 0 34px}
.page-head p{color:var(--ink-2);max-width:820px;margin:0}
.crumbs{background:#fff;border-bottom:1px solid var(--line);font-size:.86rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px;margin:0;padding:10px 0}
.crumbs li+li:before{content:"›";margin:0 6px;color:var(--muted)}
.crumbs a{color:var(--ink-2)}.crumbs [aria-current]{color:var(--muted)}

/* category grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;transition:.2s;color:var(--ink)}
.cat-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px);border-color:transparent}
.cat-img{aspect-ratio:1;background:var(--bg-2);border-radius:10px;overflow:hidden;margin-bottom:12px}
.cat-img img{width:100%;height:100%;object-fit:contain}
.cat-name{font-weight:700;color:var(--blue-dd);line-height:1.3}
.cat-count{color:var(--muted);font-size:.86rem}

/* product cards */
.p-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.p-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.p-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.p-thumb{position:relative;aspect-ratio:1;background:#fff;display:block;border-bottom:1px solid var(--line)}
.p-thumb img{width:100%;height:100%;object-fit:contain;padding:8px}
.badge{position:absolute;top:10px;left:10px;background:#f59e0b;color:#fff;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:999px}
.badge-eco{background:var(--green);left:auto;right:10px}
.p-body{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.p-cat{font-size:.76rem;font-weight:600;color:var(--green);text-transform:uppercase;letter-spacing:.04em}
.p-body h3{font-size:1rem;margin:.3em 0 .8em}
.p-body h3 a{color:var(--blue-dd)}.p-body h3 a:hover{color:var(--blue)}
.p-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.9rem}
.price{color:var(--ink-2)}.price b{color:#d9480f}
.link-more{display:inline-flex;align-items:center;gap:4px;font-weight:600;font-size:.9rem}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ticks{list-style:none;padding:0;margin:0 0 1.4em}
.ticks li{display:flex;gap:10px;align-items:flex-start;margin-bottom:.6em}
.ticks svg{color:var(--green);margin-top:.3em}

/* steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps li{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:22px}
.step-n{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;margin-bottom:12px}
.steps h3{color:#fff}.steps p{margin:0;font-size:.95rem}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.why-item{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff}
.why-ic{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--green-l);color:var(--green);margin-bottom:12px}
.why-item p{color:var(--ink-2);margin:0;font-size:.95rem}

/* apps */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.app-item{background:#fff;border-radius:var(--radius);padding:22px;border-left:4px solid var(--blue)}
.app-item p{margin:0;color:var(--ink-2);font-size:.95rem}
.app-rows{display:grid;gap:20px}
.app-row{display:grid;grid-template-columns:70px 1fr;gap:20px;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.app-n{font-size:2rem;font-weight:800;color:var(--blue-l);-webkit-text-stroke:1px var(--blue)}
.rec-label{font-weight:600;margin:.4em 0 .6em;color:var(--blue-dd)}
.mini-list{display:flex;flex-wrap:wrap;gap:12px}
.mini-p{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:6px 12px 6px 6px;color:var(--ink);font-weight:500;font-size:.92rem;max-width:320px}
.mini-p img{width:52px;height:52px;object-fit:contain;border-radius:6px;background:var(--bg-2)}
.mini-p:hover{border-color:var(--blue)}

/* sidebar tree */
.with-side{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:start}
.side{position:sticky;top:90px}
.cat-tree{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff}
.cat-tree h2{font-size:1.02rem;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.cat-tree ul{list-style:none;margin:0;padding:0}
.cat-tree>ul>li{border-bottom:1px dashed var(--line)}
.cat-tree>ul>li:last-child{border-bottom:0}
.cat-tree summary{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:9px 0;cursor:pointer;list-style:none}
.cat-tree summary::-webkit-details-marker{display:none}
.cat-tree summary:before{content:"+";display:inline-grid;place-items:center;width:18px;height:18px;border-radius:4px;background:var(--blue-l);color:var(--blue);font-weight:700;font-size:.85rem;flex:none}
.cat-tree details[open] summary:before{content:"–"}
.cat-tree summary a{flex:1;color:var(--ink);font-weight:600;font-size:.93rem;line-height:1.35}
.cat-tree a.active{color:var(--blue)}
.count{font-size:.75rem;background:var(--bg-2);color:var(--muted);border-radius:999px;padding:1px 8px}
.cat-tree details ul{padding:0 0 10px 26px}
.cat-tree details li a{display:block;padding:4px 0;color:var(--ink-2);font-size:.88rem;line-height:1.4}
.cat-tree details li a:hover,.cat-tree details li a.active{color:var(--blue);font-weight:600}
.cat-block{margin-bottom:48px}
.cat-block-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px;border-bottom:2px solid var(--blue-l);padding-bottom:8px}
.cat-block-head h2{margin:0;font-size:1.35rem}.cat-block-head h2 a{color:var(--blue-dd)}
.note-box{margin-top:28px;background:var(--blue-l);border-radius:12px;padding:16px 18px;color:var(--ink-2)}

/* product detail */
.pd{padding-top:40px}
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.g-stage{border:1px solid var(--line);border-radius:var(--radius);background:#fff;aspect-ratio:1;overflow:hidden}
.g-stage img{width:100%;height:100%;object-fit:contain}
.g-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.g-th{border:2px solid var(--line);border-radius:10px;padding:0;background:#fff;width:76px;height:76px;cursor:pointer;overflow:hidden}
.g-th img{width:100%;height:100%;object-fit:contain}
.g-th.on,.g-th:hover{border-color:var(--blue)}
.pd-info h1{font-size:clamp(1.5rem,2.8vw,2.1rem);margin:.3em 0 .3em}
.pd-en{color:var(--muted);font-size:.9rem}
.pd-price{background:#fff7ed;border:1px solid #fde4c8;border-radius:12px;padding:12px 16px;margin:16px 0 20px;font-size:1.05rem}
.pd-price b{color:#d9480f;font-size:1.3rem;margin-left:4px}
.pd-price small{display:block;color:var(--muted);font-size:.84rem}
.pd-desc{font-size:1.02rem;color:var(--ink-2)}
.pd-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 10px}
.pd-mail{font-size:.92rem;color:var(--ink-2)}
.pd-cols{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.spec{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;margin-bottom:10px}
.spec th,.spec td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);font-size:.95rem;vertical-align:top}
.spec th{width:42%;background:#f0f3f9;color:var(--blue-dd);font-weight:600}

/* about */
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.fact-grid div{background:#fff;border-radius:var(--radius);padding:20px;text-align:center;border:1px solid var(--line)}
.fact-grid b{display:block;font-size:1.6rem;color:var(--blue);font-weight:800}
.fact-grid span{color:var(--ink-2);font-size:.9rem}
.cert-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:center;margin-top:26px}
.cert-row b{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 16px;color:var(--blue-dd)}
.gallery-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery-4 img{border-radius:12px;aspect-ratio:504/300;object-fit:cover;width:100%}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:32px;align-items:stretch}
.contact-card{border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.c-list{list-style:none;padding:0;margin:0 0 10px}
.c-list li{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
.c-list svg{color:var(--blue);width:22px;height:22px;margin-top:3px}
.c-list b{display:block;font-size:.85rem;color:var(--muted);font-weight:600}
.c-list span{font-weight:600}
.c-list small{display:block;margin-top:2px}
.tip{background:var(--bg-2);border-radius:12px;padding:16px 18px;margin-top:18px;font-size:.93rem}
.tip ul{margin:.4em 0 0;padding-left:1.2em}
.map-wrap{border-radius:var(--radius);overflow:hidden;min-height:420px;border:1px solid var(--line)}
.map-wrap iframe{width:100%;height:100%;min-height:420px;border:0;display:block}
.prose{max-width:820px}.prose h2{font-size:1.2rem;margin-top:1.4em}

/* CTA + footer */
.cta-band{background:linear-gradient(120deg,var(--blue) 0%,var(--blue-d) 100%);color:#e3e9f6}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:28px;padding-top:40px;padding-bottom:40px}
.cta-band h2{color:#fff;margin-bottom:.3em}.cta-band p{margin:0;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
.site-footer{background:var(--blue-dd);color:#b9c4dc;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-top:48px;padding-bottom:36px}
.site-footer h3{color:#fff;font-size:1rem;margin-bottom:14px}
.f-logo{filter:brightness(0) invert(1);margin-bottom:12px}
.f-company{color:#fff;font-weight:700;margin-bottom:10px}
.f-contact,.f-links{list-style:none;padding:0;margin:0}
.f-contact li{display:flex;gap:10px;margin-bottom:10px}.f-contact svg{margin-top:4px;color:#8fa3d1}
.f-links li{margin-bottom:8px}
.site-footer a{color:#dfe6f5}.site-footer a:hover{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:.82rem;color:#8b97b3}

/* floating contact */
.float-contact{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:12px;z-index:60}
.float-contact a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.2)}
.float-contact svg{width:26px;height:26px}
.fc-zalo{background:var(--zalo)}.fc-zalo svg{width:34px;height:34px}
.fc-call{background:var(--green);animation:ring 2.4s infinite}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 rgba(31,157,87,.5)}50%{box-shadow:0 0 0 12px rgba(31,157,87,0)}}

/* responsive */
@media (max-width:1024px){
  .header-cta span{display:none}
  .with-side{grid-template-columns:1fr}
  .side{position:static}
  .cat-tree details:not([open]) ul{display:none}
  .why-grid,.app-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .fact-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .topbar-in>span:first-child{display:none}.topbar-in{justify-content:center}
  .nav-toggle{display:block}
  .header-cta{display:none}
  .main-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none;max-height:calc(100vh - 110px);overflow:auto}
  .main-nav.open{display:block}
  .main-nav>ul{flex-direction:column;padding:10px 16px}
  .sub{display:block;position:static;box-shadow:none;border:0;padding:0 0 0 12px;min-width:0}
  .hero-in,.split,.pd-grid,.pd-cols,.contact-grid{grid-template-columns:1fr}
  .hero-in{padding-top:32px;padding-bottom:36px;gap:28px}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .cta-in{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .gallery-4{grid-template-columns:repeat(2,1fr)}
  .section{padding:44px 0}
}
@media (max-width:560px){
  .container{padding-left:16px;padding-right:16px}
  .p-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .p-body{padding:10px 12px 12px}.p-body h3{font-size:.92rem}
  .p-foot{flex-direction:column;align-items:flex-start;gap:4px}
  .why-grid,.app-grid,.steps{grid-template-columns:1fr}
  .app-row{grid-template-columns:1fr;gap:6px;padding:18px}
  .btn-lg{width:100%;justify-content:center}
  .logo img{width:124px}
  .topbar a{margin-left:10px}
}
.price small{display:block;color:var(--muted);font-size:.78rem;line-height:1.2}
.p-foot .price{min-width:0;line-height:1.25}.p-foot .link-more{white-space:nowrap;flex:none}
.price-table{max-width:720px}.price-table thead th{background:var(--blue-l);font-weight:700}
.price-table td{color:#d9480f;font-weight:600;white-space:nowrap}