:root{
  --primary:#0d6efd;
  --dark:#0b2239;
  --light:#f7f9fc;
  --text:#1f2d3d;
  --muted:#6c7a89;
  --accent:#ff3b30;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  line-height:1.5;
  background:#fff;
}
html{scroll-behavior:smooth}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* Reading progress bar (bai-viet) */
#readProgress{position:fixed;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--primary),#22c55e);z-index:120;transition:width .1s linear}

/* Typography */
h1,h2,h3,h4{color:var(--dark)}
h1{font-size:28px}
h2{font-size:24px}
h3{font-size:18px}
p{font-size:16px}

/* Buttons */
.btn{display:inline-block;padding:10px 14px;border-radius:10px;border:1px solid #e6ebf3;background:#eef1f5;color:var(--dark);font-weight:600;transition:filter .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease}
.btn:hover{filter:brightness(.98);box-shadow:0 6px 16px rgba(12,29,74,.08)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{filter:brightness(.96)}
.btn.outline{background:#fff;border-color:#cfd8e6;color:var(--dark)}
.btn.lg{padding:12px 18px;border-radius:12px}

.container{
  width:min(1200px, 92%);
  margin-inline:auto;
}

/* Generic card */
.card{background:#fff;border:1px solid #e9eef5;border-radius:14px;box-shadow:0 12px 30px rgba(12,29,74,.06)}

/* Top bar */
.top-bar{
  background:var(--dark);
  color:#fff;
  font-size:14px;
}
.top-bar .container{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 0;
  gap:16px;
}
.social-media a{color:#fff;opacity:.9;margin-left:14px}
.social-media a:hover{opacity:1}
.sm-link{font-weight:600}

/* Fixed header */
header{position:fixed; top:0; left:0; right:0; z-index:100; width:100%}
header.stuck{box-shadow:0 4px 12px rgba(0,0,0,.06)}
body.has-fixed-header{padding-top:var(--header-h, 120px)}

/* Main nav */
.main-nav{
  background:#fff;
  border-bottom:1px solid #eef1f5;
  position:static;
}
.main-nav .container{
  display:flex;align-items:center;justify-content:space-between;
  padding:6px 0; gap:16px;
  position:relative; overflow:visible;
}
.logo{display:flex;align-items:center}
.logo{position:relative;height:50px;overflow:visible;min-width:240px}
.logo img{
  height:150px; /* 3x */
  width:auto;
  position:absolute; left:0; top:50%; transform:translateY(-50%);
  z-index:5; display:block;
}
.nav-links{position:relative;z-index:3}

.menu-toggle{display:none;background:none;border:0;font-size:22px}

.nav-links{
  list-style:none;display:flex;gap:22px;margin:0;padding:0
}
.nav-links a{padding:6px 6px;display:block;font-weight:600;color:var(--dark)}
.nav-links a:hover{color:var(--primary)}

.has-dropdown{position:relative}
.has-dropdown .dropdown{
  position:absolute;left:0;top:120%;
  background:#fff;border:1px solid #e9eef5;border-radius:8px;
  min-width:220px;padding:8px 0;display:none;box-shadow:0 10px 30px rgba(12,29,74,.08);
}
.has-dropdown:hover .dropdown{display:block}
.dropdown li{list-style:none}
.dropdown a{padding:10px 14px;white-space:nowrap}
.search-icon{
  background:#f3f6fb;border:0;border-radius:8px;
  width:32px;height:32px;display:grid;place-items:center;color:var(--dark)
}
.search-icon:hover{background:#e9eef5}

/* Hero slider */
.hero{position:relative}
.slider{position:relative;width:100%;height:360px;overflow:hidden}
.slide{
  position:absolute;inset:0;background-size:100% 100%;background-position:center;
  opacity:0;transition:opacity .6s ease;
}
.slide.active{opacity:1}
.overlay{
  position:absolute;inset:0;background:linear-gradient(90deg, rgba(11,34,57,.6), rgba(11,34,57,.1)); /* Dark overlay for contrast */
  color:#fff;display:flex;align-items:center;
}
.overlay .container{padding:24px;max-width:960px}
.overlay h1{margin:0 0 8px;font-size:36px;letter-spacing:.5px;text-shadow:0 1px 2px rgba(0,0,0,.1)}
.overlay h2{margin:0 0 12px;font-size:24px;font-weight:800;text-shadow:none}
.hotline{font-size:18px}
.hotline a{color:#fff;font-weight:700}

/* Hero text panel to boost readability */
.overlay .container{background:rgba(11,34,57,.35);color:#fff;border-radius:16px;box-shadow:0 8px 25px rgba(0,0,0,.15);backdrop-filter:saturate(110%) blur(8px); border: 1px solid rgba(255,255,255,.25);}
.overlay .container h1,.overlay .container h2,.overlay .container .hotline,.overlay .container .hotline a{color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.4)}

@media (max-width: 992px){
  .slider{height:280px}
}
@media (max-width: 600px){
  .slider{height:200px}
}
@media (max-width: 768px){
  .overlay h1{font-size:28px}
  .overlay h2{font-size:18px}
  .overlay .container{padding:16px;border-radius:10px}
  .main-nav .container{flex-wrap:wrap;gap:10px}
  .logo{height:40px;min-width:auto}
  .logo img{position:static;transform:none;height:40px;width:auto}
}

.nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border:0;border-radius:50%;
  background:rgba(255,255,255,.85);color:var(--dark);display:grid;place-items:center;
  box-shadow:0 6px 20px rgba(0,0,0,.15);cursor:pointer
}
.nav.prev{left:16px}
.nav.next{right:16px}
.nav:hover{background:#fff}

.dots{
  position:absolute;left:50%;transform:translateX(-50%);
  bottom:14px;display:flex;gap:10px;
}
.dots button{
  width:10px;height:10px;border-radius:50%;border:0;background:#ffffff90;
}
.dots button.active{background:#fff}

/* Features strip (blue bar) */
.features{background:#0b6fb9;padding:11px 0;color:#fff}
.features .container{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:center}
.feature{background:transparent;border:0;border-radius:0;padding:8px 6px;text-align:center;box-shadow:none}
.feature i{font-size:14px;color:#fff;margin:0 auto 6px;width:26px;height:26px;border-radius:50%;border:2px solid #fff;display:grid;place-items:center}
.feature h3{margin:4px 0 4px;color:#fff;font-size:16px}
.feature p{color:#eaf2fb;margin:0;font-size:14px}
@media (max-width: 992px){.features .container{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 600px){.features .container{grid-template-columns:repeat(2,1fr)}}

/* Footer */
.site-footer{background:#0b2239;color:#c8d3e1;margin-top:40px;position:relative}
.footer-grid{
  display:grid;grid-template-columns:2fr 2fr 1.5fr;gap:24px;padding:28px 0;
}
.site-footer h4{color:#fff;margin:0 0 10px}
.contact-list,.links{list-style:none;margin:0;padding:0}
.links li{position:relative;padding-left:22px}
.links li::before{content:"";position:absolute;left:0;top:.35em;width:14px;height:14px;border-radius:3px;background:#ffffff50}
.links li a{position:relative}
.links li a::before{content:"";position:absolute;left:-22px;top:50%;transform:translateY(-50%);width:14px;height:14px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='%23ffffff'%3E%3Cpath d='M9 18l6-6-6-6'/%3E%3C/svg%3E") no-repeat center/14px 14px;opacity:.9}
.links img{display:none}
.contact-list li,.links li{margin:8px 0}
.contact-list a,.links a{color:#c8d3e1}
.contact-list a:hover,.links a:hover{color:#fff}
.site-footer .copyright{
  border-top:1px solid #213651;padding:14px 0;color:#9fb0c3;font-size:14px
}

/* Floating contact buttons */
.floating-btn{
  position:fixed;right:16px;width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;color:#fff;text-align:center;
  box-shadow:0 10px 30px rgba(0,0,0,.18);z-index:40
}
.floating-btn.call{bottom:86px;background:var(--accent)}
.floating-btn.zalo{bottom:24px;background:#118fe4;will-change:transform}
.floating-btn.zalo svg{width:24px;height:24px;display:block}

@keyframes shake-glow{
  0%{transform:translateX(0) translateZ(0);box-shadow:0 12px 34px rgba(0,0,0,.20)}
  25%{transform:translateX(-4px) translateZ(0);box-shadow:0 0 26px rgba(255,255,255,.75), 0 12px 34px rgba(0,0,0,.20)}
  50%{transform:translateX(4px) translateZ(0);box-shadow:0 0 32px rgba(255,255,255,.95), 0 12px 34px rgba(0,0,0,.20)}
  75%{transform:translateX(-3px) translateZ(0);box-shadow:0 0 26px rgba(255,255,255,.75), 0 12px 34px rgba(0,0,0,.20)}
  100%{transform:translateX(0) translateZ(0);box-shadow:0 12px 34px rgba(0,0,0,.20)}
}
.floating-btn{animation:shake-glow 0.9s ease-in-out infinite !important}
.floating-btn.call, .floating-btn.zalo{animation:shake-glow 0.9s ease-in-out infinite !important}

/* Responsive */
@media (max-width: 1024px){
  .features .container{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 768px){
  .menu-toggle{display:block}
  .nav-links{position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid #eef1f5;display:none}
  .nav-links.show{display:flex}
  .nav-links a{padding:12px 16px}
  .has-dropdown:hover .dropdown{display:none}
  .has-dropdown .dropdown{position:static;border:0;box-shadow:none;padding:0}
  .footer-grid{grid-template-columns:1fr}
  .slider{height:64vw;max-height:460px}
  .overlay h1{font-size:22px}
  .overlay h2{font-size:18px}
  html,body{overflow-x:hidden}
}
@media (max-width: 480px){
  .slider{height:70vw;max-height:420px}
}

/* ====== Home sections (new) ====== */
/* Section title */
.section-title{margin:0 0 18px;font-size:26px;color:var(--dark);text-transform:uppercase;letter-spacing:.5px;position:relative}
.section-title::after{content:"";position:absolute;left:0;bottom:-8px;width:64px;height:4px;background:var(--primary);border-radius:6px}

/* Services */
.services{padding:44px 0;background:#f4f7fb}
.services#linh-vuc{scroll-margin-top:90px}
.services .container{padding-top:4px}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service{background:#fff;border:1px solid #e9eef5;border-radius:14px;padding:20px;display:grid;gap:8px;box-shadow:0 14px 36px rgba(12,29,74,.06);transition:transform .15s ease, box-shadow .2s ease;min-height:160px}
.service:hover{transform:translateY(-2px);box-shadow:0 18px 44px rgba(12,29,74,.08)}
.service .icon-wrap{width:64px;height:64px;display:grid;place-items:center;border-radius:999px;background:#e9f2ff;color:var(--primary);font-size:26px}
.service h3{margin:8px 0 2px}
.service p{margin:0;color:var(--muted)}
@media (max-width: 992px){.services-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 640px){.services-grid{grid-template-columns:1fr}}

/* ===== Scroll reveal ===== */
[data-reveal], .feature, .service, .proj-card, .about-text, .about-photo .photo, .m-card, .info-image .photo, .info-text, .news-list li, .news-item, .v-thumb{
  opacity:0; transform:translateY(16px) scale(.98); filter:blur(0px); transition:opacity .7s ease, transform .7s ease, filter .7s ease;
}
[data-reveal="slide-left"]{transform:translateX(40px) scale(1)}
[data-reveal="slide-right"]{transform:translateX(-40px) scale(1)}
[data-reveal="zoom-in"]{transform:translateY(10px) scale(.85)}
[data-reveal="pop"]{transform:translateY(8px) scale(.8)}
[data-reveal="flip"]{transform:rotateY(70deg) translateZ(0); transform-style:preserve-3d}
[data-reveal="rotate"]{transform:translateY(16px) rotate(-6deg) scale(.96)}
[data-reveal="blur-in"]{filter:blur(10px); transform:translateY(16px) scale(.96)}

[data-reveal="fade-up"].in-view, .feature.in-view, .service.in-view, .info-text.in-view, .news-item.in-view, .news-list li.in-view{
  opacity:1; transform:translateY(0) scale(1);
}
[data-reveal="zoom-in"].in-view, .proj-card.in-view, .m-card.in-view{
  opacity:1; transform:translateY(0) scale(1); transition-timing-function:cubic-bezier(.22,.68,0,1.3);
}
[data-reveal="blur-in"].in-view, .about-photo .photo.in-view, .info-image .photo.in-view, .v-thumb.in-view{
  opacity:1; transform:translateY(0) scale(1); filter:blur(0);
}
[data-reveal="slide-left"].in-view,
[data-reveal="slide-right"].in-view{
  opacity:1; transform:translateX(0) scale(1);
}
[data-reveal="flip"].in-view{opacity:1; transform:rotateY(0) translateZ(0);}
[data-reveal="rotate"].in-view{opacity:1; transform:translateY(0) rotate(0) scale(1)}

/* Tan biến/hợp lại */
.dissolve{position:relative}
.dissolve::before{
  content:""; position:absolute; inset:0; background:inherit; filter:blur(12px) opacity(.6);
  transform:scale(1.05); transition:filter .8s ease, transform .8s ease; z-index:-1;
}
.dissolve.in-view::before{filter:blur(0) opacity(0); transform:scale(1)}

/* Featured Projects */
.featured-projects{padding:48px 0;background:#0b6fb9; /* dải xanh theo mockup */ color:#fff}
.featured-projects .section-title{color:#fff}
.proj-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.proj-card{display:block;border-radius:12px;overflow:hidden;color:#0b2239;text-decoration:none;position:relative;box-shadow:0 10px 26px rgba(12,29,74,.12);transition:transform .15s ease, box-shadow .2s ease}
.proj-card .thumb{aspect-ratio:16/9;background:var(--img) center/cover no-repeat;position:relative;overflow:hidden}
.proj-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.proj-card h3{position:absolute;left:0;right:0;bottom:0;margin:0;font-size:15px;color:#fff;background:linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,.75) 85%);padding:10px 12px}
.proj-card:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(12,29,74,.08)}
.proj-card:hover .thumb{filter:brightness(.94)}
@media (max-width: 1024px){.proj-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width: 768px){.proj-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 520px){.proj-grid{grid-template-columns:1fr}}

/* Mobile polish for container paddings to avoid overflow */
@media (max-width: 480px){
  .container{width:min(1200px, 94%)}
  .features .container{padding-inline:6px}
  .site-search input{min-width:200px}
}

/* About Us */
.about-us{padding:48px 0;background:#e9f2ff}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}
.about-text{background:#fff;border:1px solid #e9eef5;border-radius:14px;padding:20px;box-shadow:0 12px 30px rgba(12,29,74,.06)}
.about-text p{margin:0 0 12px;color:var(--text)}
.about-photo .photo{border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:var(--img) center/cover no-repeat;box-shadow:0 10px 30px rgba(12,29,74,.08)}
@media (max-width: 900px){.about-grid{grid-template-columns:1fr}}

/* Values banner */
.values-banner{position:relative;padding:80px 0;background:url('/images/values.jpg') center/cover no-repeat;color:#fff;text-align:center}
.values-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(0,0,0,.86),rgba(0,0,0,.80));backdrop-filter:saturate(110%) blur(1.5px)}
.values-banner .container{position:relative;z-index:1;max-width:760px}
.values-banner h2{margin:0 0 12px;font-size:30px;text-transform:uppercase;letter-spacing:.8px;font-weight:800;text-shadow:0 2px 8px rgba(0,0,0,.5);color:#ffffff !important}
.values-banner h2::after{content:"";display:block;width:140px;height:3px;background:#f7b500;margin:12px auto 0;border-radius:6px;opacity:.95}
.values-banner p{margin:12px auto 22px;color:#ffffff !important;opacity:.98;line-height:1.75}
.btn.cta{background:#ffc107;border-color:#ffc107;color:#0b2239;font-weight:800;letter-spacing:.4px;text-transform:uppercase;padding:12px 22px;border-radius:6px}
.btn.cta:hover{filter:brightness(.97);box-shadow:0 10px 26px rgba(0,0,0,.22)}
@media (max-width: 768px){
  .values-banner{padding:64px 0}
  .values-banner h2{font-size:24px}
}

/* News & Video */
.news-video{padding:44px 0;background:#fff}
.nv-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.nv-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.view-more{color:#0b6fb9;font-weight:600}
.news{background:#fff;border:1px solid #e9eef5;border-radius:14px;padding:14px}
.video{background:#fff;border:1px solid #e9eef5;border-radius:14px;padding:14px}
.news-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.news-list li a{display:flex;gap:12px;align-items:flex-start;color:inherit;border-radius:10px;padding:6px;position:relative;min-height:88px}
/* Remove decorative bullet to avoid overlay issues on some browsers */
.news-list li a::before{display:none !important}
.news-list li a:hover{background:#f7f9fc}
.nv-thumb{display:block;width:140px;aspect-ratio:16/10;height:88px;border-radius:10px;background:var(--img) center/cover no-repeat;flex:0 0 140px;z-index:0;overflow:hidden}
.nv-info{position:relative;z-index:1;flex:1 1 auto;min-width:0;overflow:hidden}
.nv-info h4{margin:0 0 4px;font-size:16px}
.nv-info p{margin:0;color:var(--muted);font-size:14px}
.video-card{display:block;color:inherit}
.v-thumb{position:relative;aspect-ratio:16/10;border-radius:12px;background:var(--img) center/cover no-repeat;overflow:hidden}
.v-thumb .play{position:absolute;inset:0;margin:auto;background:#0009;color:#fff;border-radius:999px;width:56px;height:56px;display:grid;place-items:center}
@media (max-width: 992px){.nv-grid{grid-template-columns:1fr}}
@media (max-width: 640px){
  .nv-thumb{width:100px;flex-basis:100px}
}

/* ====== About page (gioi-thieu) ====== */
/* About hero */
.about-hero{padding:36px 0;background:#0b6fb9}
.about-hero .hero-text{background:#ffffff !important;color:#111827 !important;border-color:transparent;padding:24px}
.about-hero .hero-text h1,
.about-hero .hero-text h2,
.about-hero .hero-text h3,
.about-hero .hero-text p,
.about-hero .hero-text li{color:#111827 !important}
.about-hero .hero-text .section-title{color:var(--dark) !important}
.hero-grid{display:grid;grid-template-columns:2fr 1fr;gap:22px;align-items:stretch}
.hero-text{background:#0a5ea0;color:#eaf2fb;padding:20px}
.hero-text p{color:#eaf2fb;margin:0 0 10px}
.hero-logo{display:grid;place-items:center;padding:24px}
.hero-logo img{max-width:220px}
@media (max-width: 900px){.hero-grid{grid-template-columns:1fr}}

/* Mission strip */
.mission-strip{padding:36px 0;background:#0b2239;color:#dbe6f3}
.strip-title{color:#fff;margin:0 0 6px;text-align:center}
.strip-sub{text-align:center;margin:0 0 18px;color:#b8c7e4}
.mission-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.m-card{background:#0f2a48;border:1px solid #1a3b61;border-radius:12px;padding:16px;text-align:center}
.m-card .m-icon{font-size:24px;color:#7ec0ff;margin-bottom:8px}
.m-card h3{margin:6px 0 6px;color:#fff}
.m-card p{margin:0;color:#c8d3e1;font-size:14px}
.m-card.active{background:#fff;color:#0b2239;border-color:#fff}
.m-card.active h3{color:#0b2239}
.m-card.active p{color:#465a73}
@media (max-width: 1100px){.mission-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width: 700px){.mission-grid{grid-template-columns:repeat(1,1fr)}}

/* Company info */
.company-info{padding:40px 0;background:#f4f7fb}
.info-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:22px;align-items:center}
.info-image .photo{border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:var(--img) center/cover no-repeat;box-shadow:0 12px 30px rgba(12,29,74,.08)}
.info-text{padding:18px}
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.info-list li{line-height:1.6}
.info-list a{color:var(--primary)}
@media (max-width: 900px){.info-grid{grid-template-columns:1fr}}

/* Card */
.card{background:#fff;border:1px solid #e9eef5;border-radius:14px;padding:20px;box-shadow:0 12px 30px rgba(12,29,74,.06)}
.card h3{margin:0 0 8px}
.card p{margin:0 0 12px}

/* Overrides to ensure good contrast in About hero */
.about-hero .hero-text{background:#ffffff !important;color:#111827 !important;border-color:transparent;padding:24px}
.about-hero .hero-text h1,
.about-hero .hero-text h2,
.about-hero .hero-text h3,
.about-hero .hero-text p,
.about-hero .hero-text li{color:#111827 !important}
.about-hero .hero-text .section-title{color:var(--dark) !important}

/* ====== News page (tin-tuc) ====== */
.news-page{padding:36px 0}
.news-layout{display:grid;grid-template-columns:2.2fr 1fr;gap:22px}
.news-listing .section-title::after{left:auto;right:auto}
.news-item { display: flex; gap: 20px; align-items: flex-start; padding: 16px 0; border-bottom: 1px solid #e9eef5; }
.news-item:last-child{border-bottom:0}
.news-item .thumb{display:block;border-radius:4px;overflow:hidden;border:1px solid #d9e3f0;flex:0 0 220px;width:220px;height:165px}
.news-item .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.news-item .title { margin: 0 0 6px; font-size: 20px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item .title a { color: #0b6fb9; font-weight: 600; }
.news-item .title a:hover{color:var(--primary)}
.news-item .date{display:block;color:#6b7280;font-size:14px;margin-bottom:6px}
.news-item .excerpt { margin: 0; color: #4b5563; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 15px; }
.pagination{display:flex;gap:6px;justify-content:center;margin-top:18px}
.pagination .page{min-width:36px;text-align:center;padding:8px 10px;border:1px solid #e6ebf3;border-radius:8px;background:#fff}
.pagination .page.active{background:var(--primary);border-color:var(--primary);color:#fff}
.sidebar .side-card{background:#fff;border:1px solid #e9eef5;border-radius:12px;overflow:hidden;margin-bottom:16px}
.sidebar .side-card h4{margin:0;padding:10px 12px;background:#0b6fb9;color:#fff;font-size:16px}
.sidebar .side-card .side-list{padding:10px 12px}
.sidebar .side-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.sidebar .side-list a{color:#0b2239}
.sidebar .side-list a:hover{color:var(--primary)}
.sidebar .side-list li{position:relative;padding-left:24px}
.sidebar .side-list li::before{
  content:"";position:absolute;left:0;top:.25em;width:16px;height:16px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230d6efd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") no-repeat center/16px 16px;
  opacity:.9
}
.side-banners{display:grid;gap:12px}
.side-banners img{width:100%;border-radius:12px;display:block}

/* Dynamic content images (admin-edited) */
.about-dynamic img,
.post-body img,
.content img{max-width:100%;height:auto;display:block}

/* Map embed responsive */
.map-embed{position:relative;width:100%;overflow:hidden}
.map-embed iframe{width:100%;height:420px;border:0;display:block}
@media (max-width:768px){.map-embed iframe{height:360px}}

/* ====== Post page (bai-viet) ====== */
.post-page { padding: 36px 0; }
.post-content { max-width: 800px; margin: 0 auto; }
.post-toc{border:1px solid #e9eef5;border-radius:12px;padding:12px;margin:8px 0 12px;background:#f9fbff}
.post-toc h4{margin:0 0 8px;font-size:16px}
.post-toc ul{margin:0;padding-left:18px}
.post-toc li{margin:6px 0}
.post-toc a{color:#0b6fb9}
.post-body h2, .post-body h3{scroll-margin-top:90px}
.post-body p, .post-body li{word-break:break-word; overflow-wrap:anywhere}
.post-body a{word-break:break-all}
.post-body img, .post-body video{max-width:100%; height:auto}
.post-body [style*="width:"]{max-width:100% !important;height:auto !important}
.post-body pre{white-space:pre-wrap; word-break:break-word; overflow-wrap:anywhere; background:#f6f8fb; padding:10px; border-radius:8px}
.post-body code{white-space:pre-wrap; word-break:break-word}
.post-body blockquote{margin:12px 0; padding:8px 12px; border-left:4px solid var(--primary); background:#f7faff; border-radius:6px}
.post-body table{display:block; width:100%; overflow-x:auto; table-layout:fixed}
.post-body th, .post-body td{word-break:break-word; overflow-wrap:anywhere}

/* contain any residual horizontal overflow only within post pages */
.post-page{overflow-x:hidden}
.related-content { margin-top: 40px; padding-top: 24px; border-top: 1px solid #e9eef5; }
.post-title { font-size: 32px; margin: 0 0 8px; line-height: 1.3; }
.post-date { color: #6b7280; margin-bottom: 16px; display: block; }
.post-body { line-height: 1.7; font-size: 16px; }
.post-body iframe{max-width:100%;width:100%;height:auto}
.post-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
.post-body table th,.post-body table td{border:1px solid #e9eef5;padding:8px 10px;text-align:left}
.post-body table thead th{background:#f7f9fc}
.post-body figure{margin:0 0 16px}
.post-body h2 { font-size: 24px; margin: 24px 0 12px; }
.post-body h3 { font-size: 20px; margin: 20px 0 10px; }
.post-body p { margin-bottom: 16px; }
.post-body ul, .post-body ol { padding-left: 24px; margin-bottom: 16px; }
.post-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 12px 0; }
.post-body .post-cover,
.post-body .post-cover-figure img {
  max-height: 400px;
  width: 100%;
  object-fit: cover;
  margin-bottom: 24px;
}
.post-body .post-cover-figure {
    margin: 0 0 24px;
}
.post-body figcaption {
    text-align: center;
    color: #6b7280;
    font-size: 14px;
    margin-top: 4px;
}

@media (max-width: 1024px) {
  .post-layout { grid-template-columns: 1.6fr 1fr; }
}
@media (max-width: 768px) {
  .post-layout { grid-template-columns: 1fr; }
}

/* ===== Mobile optimizations for bai-viet.php ===== */
@media (max-width: 768px){
  .post-title{font-size:26px;line-height:1.3;margin-bottom:8px}
  .post-date{font-size:14px}
  .post-body{font-size:16px;line-height:1.8;word-break:break-word}
  .post-body table{font-size:15px}
  .post-content{padding:0 12px}
  .post-toc{padding:10px}
  .related-content{display:grid;gap:16px}
  .side-banners{display:none}
}
@media (max-width: 480px){
  .post-title{font-size:24px}
  .post-body{font-size:15px}
}

/* ====== Projects (du-an) ====== */
.projects-hero {
  height: 280px;
  background: url('/images/projects-hero.jpg') center/cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}
.projects-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(11, 34, 57, .6), rgba(11, 34, 57, .3));
}
.projects-hero .hero-inner {
  position: relative;
  z-index: 2;
}
.projects-hero h1 {
  margin: 0 0 8px;
  font-size: 32px;
}
.projects-hero p {
  margin: 0;
  font-size: 18px;
  opacity: .9;
}

.projects-tabs {
  padding: 20px 0;
  background: #f8f9fa;
  border-bottom: 1px solid #e9eef5;
}
.tab-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.tab {
  border: 1px solid #ced4da;
  background: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.projects-list {
  padding: 32px 0 48px;
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.p-card { 
  display: block; 
  text-decoration: none; 
  color: inherit; 
  border-radius: 12px; 
  overflow: hidden; 
  background: #fff; 
  box-shadow: 0 4px 15px rgba(12, 29, 74, .07); 
  transition: transform .2s ease, box-shadow .2s ease; 
}
.p-card:hover { 
  transform: translateY(-4px); 
  box-shadow: 0 12px 30px rgba(12, 29, 74, .1); 
}
.p-card .thumb { 
  aspect-ratio: 4/3; 
  position:relative; 
}
.p-card .thumb img { 
  width: 100%; 
  height: 100%; 
  object-fit: cover; 
  display: block; 
}
.p-card .title { 
  margin: 0; 
  padding: 16px; 
  font-size: 16px; 
  text-align: left; 
  font-weight: 600; 
  color: var(--dark); 
  display:-webkit-box; 
  -webkit-line-clamp:2; 
  line-clamp:2; 
  -webkit-box-orient:vertical; 
  overflow:hidden; 
}
.p-card .badge { 
  position:absolute; 
  left:8px; 
  top:8px; 
  padding:6px 10px; 
  border-radius:999px; 
  font-size:12px; 
  font-weight:700; 
  color:#fff; 
  box-shadow:0 4px 12px rgba(0,0,0,.12); 
}
.p-card .badge.inprogress{ 
  background:#0d6efd; 
}
.p-card .badge.done{ 
  background:#36b37e; 
}

@media (max-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}
@media (max-width: 1024px){.news-layout{grid-template-columns:1.6fr 1fr}.news-item .thumb{flex-basis:200px;width:200px;height:150px}}
@media (max-width: 768px){.news-layout{grid-template-columns:1fr}.news-item{flex-direction:column}.news-item .thumb{flex-basis:auto;width:100%;height:auto}.news-item .thumb img{width:100%;height:auto;aspect-ratio:16/9}}