/* CO TRANG VIET - giao dien co trang dong ruong (mau 1282) */
/* Bang mau: la lua, long trang, nang som, dam xanh, muc xanh */
:root{
  --leaf:#4d7c4f;
  --leaf-deep:#3a623e;
  --leaf-2:#2c4a30;
  --gold:#e8b04b;
  --gold-deep:#ca9434;
  --gold-2:#a57524;
  --mist:#7fb5a8;
  --mist-deep:#60988a;
  --mist-2:#487a6e;
  --plume:#fbfbf7;
  --plume-2:#eceee4;
  --ink:#2f3a2e;
  --ink-2:#202a20;
  --line:rgba(47,58,46,.22);
  --tx:#31362d;
  --tx-soft:#79806f;
  --shadow:0 18px 44px -18px rgba(32,42,32,.5);
  --radius:16px;
  --font-head:'Newsreader',serif;
  --font-body:'Be Vietnam Pro',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
body.co-body{
  font-family:var(--font-body);
  color:var(--tx);
  background:var(--plume);
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;
}
.co-shell{max-width:1240px;margin:0 auto;padding:0 24px}
.co-skip{position:absolute;left:-9999px;top:0;background:var(--gold);color:var(--ink);padding:10px 18px;z-index:200;border-radius:0 0 12px 0}
.co-skip:focus{left:0}

/* Dai binh minh: ba vet nang som tren nen dong xanh */
.co-dawnband{position:relative;height:22px;background:linear-gradient(180deg,var(--leaf-2),var(--ink-2));border-bottom:3px solid var(--gold);overflow:hidden}
.co-dawn{position:absolute;top:4px;bottom:4px;width:130px;background:linear-gradient(100deg,transparent,rgba(232,176,75,.75) 45%,rgba(251,251,247,.6) 60%,transparent);border-radius:999px;opacity:.75;animation:co-dawnslide 7s ease-in-out infinite alternate}
.co-dawn:nth-child(1){left:10%}
.co-dawn:nth-child(2){left:44%;animation-delay:2.4s;width:96px}
.co-dawn:nth-child(3){left:76%;animation-delay:4.2s;width:150px}
@keyframes co-dawnslide{from{transform:translateX(-24px);opacity:.45}to{transform:translateX(24px);opacity:.9}}

/* Dau trang */
.co-header{position:sticky;top:0;z-index:90;background:rgba(32,42,32,.97);backdrop-filter:blur(8px);border-bottom:3px solid var(--leaf)}
.co-header-in{display:flex;align-items:center;gap:28px;padding:14px 24px}
.co-brand{display:flex;align-items:center;flex-shrink:0}
.co-brand-img{height:52px;width:auto}
.co-nav{margin-left:auto}
.co-nav-list{display:flex;gap:4px;flex-wrap:wrap}
.co-nav-a{display:block;padding:10px 14px;font-size:14px;font-weight:600;color:#e2ecdc;border-radius:999px;transition:color .25s,background .25s}
.co-nav-a:hover{color:#fff;background:rgba(232,176,75,.2)}
.co-nav-a.is-active{color:var(--ink-2);background:var(--gold)}
.co-burger{display:none;width:46px;height:46px;border:1px solid rgba(251,251,247,.4);background:transparent;border-radius:999px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.co-burger span{display:block;width:20px;height:2px;background:var(--plume);border-radius:2px;transition:transform .3s,opacity .3s}
.co-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.co-burger.is-open span:nth-child(2){opacity:0}
.co-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Menu di dong: dan co xoe canh, hai ben canh mo ra */
.co-scrim{position:fixed;inset:0;background:rgba(24,32,24,.72);opacity:0;visibility:hidden;transition:opacity .4s,visibility .4s;z-index:97}
.co-scrim.is-on{opacity:1;visibility:visible}
.co-wingmenu{position:fixed;inset:0;z-index:99;background:
  radial-gradient(720px 400px at 10% 8%,rgba(232,176,75,.16),transparent 66%),
  radial-gradient(640px 420px at 92% 94%,rgba(127,181,168,.18),transparent 68%),
  linear-gradient(180deg,var(--ink),var(--ink-2));
  visibility:hidden;opacity:0;transition:opacity .5s,visibility .5s;overflow:hidden}
.co-wingmenu.is-open{visibility:visible;opacity:1}
.co-wing{position:absolute;top:0;bottom:0;width:52%;background:linear-gradient(180deg,rgba(77,124,79,.28),rgba(32,42,32,.06));transition:transform .65s cubic-bezier(.7,0,.2,1);pointer-events:none}
.co-wing::after{content:"";position:absolute;top:0;bottom:0;width:5px;background:linear-gradient(180deg,transparent,var(--gold),var(--plume),var(--gold),transparent);opacity:.8}
.co-wing-l{left:0;border-radius:0 90% 90% 0/0 55% 55% 0;transform-origin:left center}
.co-wing-l::after{right:0}
.co-wing-r{right:0;border-radius:90% 0 0 90%/55% 0 0 55%;transform-origin:right center}
.co-wing-r::after{left:0}
.co-wingmenu:not(.is-open) .co-wing-l{transform:translateX(-104%)}
.co-wingmenu:not(.is-open) .co-wing-r{transform:translateX(104%)}
.co-wingmenu-in{position:relative;display:flex;flex-direction:column;justify-content:center;height:100%;padding:52px 28px 44px;overflow-y:auto;opacity:0;transition:opacity .45s .35s}
.co-wingmenu.is-open .co-wingmenu-in{opacity:1}
.co-wingmenu-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;max-width:560px;margin-left:auto;margin-right:auto;width:100%}
.co-wingmenu-title{font-family:var(--font-head);font-size:22px;color:var(--plume)}
.co-wingmenu-close{width:46px;height:46px;border:1px solid rgba(251,251,247,.4);background:transparent;color:var(--plume);font-size:26px;border-radius:50%;cursor:pointer;line-height:1}
.co-wingmenu-list{display:flex;flex-direction:column;gap:10px;max-width:560px;margin:0 auto;width:100%}
.co-wingmenu-list a{display:flex;align-items:center;gap:14px;padding:13px 18px;border:1px solid rgba(127,181,168,.45);border-radius:6px 999px 999px 6px;color:var(--plume);background:rgba(251,251,247,.05);opacity:0;transform:translateY(18px) rotate(2deg);transition:transform .5s cubic-bezier(.3,1.15,.4,1),opacity .5s,border-color .25s,background .25s}
.co-wingmenu.is-open .co-wingmenu-list a{transform:none;opacity:1}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(1) a{transition-delay:.3s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(2) a{transition-delay:.36s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(3) a{transition-delay:.42s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(4) a{transition-delay:.48s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(5) a{transition-delay:.54s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(6) a{transition-delay:.6s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(7) a{transition-delay:.66s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(8) a{transition-delay:.72s}
.co-wingmenu.is-open .co-wingmenu-list li:nth-child(9) a{transition-delay:.78s}
.co-wingmenu-list a:hover{border-color:var(--gold);background:rgba(232,176,75,.14)}
.co-quill{position:relative;width:8px;height:22px;flex-shrink:0;background:linear-gradient(180deg,var(--plume),var(--mist));border-radius:80% 20% 60% 40%/90% 60% 40% 10%;transform:rotate(24deg)}
.co-quill::after{content:"";position:absolute;left:3px;top:2px;bottom:2px;width:1.5px;background:var(--leaf-2);opacity:.7}
.co-wingmenu-no{font-family:var(--font-head);color:var(--gold);font-size:12px;letter-spacing:.1em;flex-shrink:0}
.co-wingmenu-name{font-size:16px;font-weight:600;flex:1}
.co-wingmenu-note{margin-top:26px;text-align:center;color:var(--mist);font-size:13px;opacity:.95}

/* Khoi anh hung: mat troi moc sau vom dong */
.co-hero{background:
  radial-gradient(760px 440px at 88% 10%,rgba(232,176,75,.24),transparent 66%),
  radial-gradient(560px 380px at 2% 96%,rgba(77,124,79,.14),transparent 70%),
  linear-gradient(180deg,var(--plume-2),var(--plume) 80%);
  color:var(--tx);padding:88px 0 118px;overflow:hidden}
.co-hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.co-hero-kicker{display:flex;align-items:center;gap:10px;color:var(--leaf-deep);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:13px;margin-bottom:18px}
.co-hero-title{font-family:var(--font-head);font-weight:600;font-size:clamp(30px,4vw,48px);line-height:1.2;margin-bottom:20px;color:var(--ink)}
.co-hero-desc{color:var(--tx-soft);font-size:16.5px;max-width:52ch;margin-bottom:30px}
.co-hero-acts{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.co-btn{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .25s,box-shadow .25s,background .25s,border-color .25s,color .25s;border:1px solid transparent}
.co-btn b{font-weight:700}
.co-btn:hover{transform:translateY(-2px)}
.co-btn-gold{background:var(--gold);color:var(--ink-2);box-shadow:0 12px 26px -12px rgba(232,176,75,.95)}
.co-btn-gold:hover{background:var(--gold-deep);color:#fff}
.co-btn-leaf{background:var(--leaf);color:#fff;box-shadow:0 12px 26px -12px rgba(77,124,79,.95)}
.co-btn-leaf:hover{background:var(--leaf-deep)}
.co-btn-line{border-color:var(--leaf);color:var(--leaf-deep);background:transparent}
.co-btn-line:hover{background:rgba(255,255,255,.7)}
.co-btn-ghost{border-color:#d4d8c8;color:var(--tx);background:transparent}
.co-btn-ghost:hover{border-color:var(--gold);color:var(--gold-2)}
.co-hero-stats{display:flex;gap:38px}
.co-hero-stats li{display:flex;flex-direction:column;gap:4px;border-left:3px solid var(--gold);padding-left:16px}
.co-hero-stats strong{font-family:var(--font-head);font-weight:600;font-size:30px;color:var(--leaf-deep)}
.co-hero-stats span{font-size:13px;color:var(--tx-soft)}

/* Hinh dong: mat troi moc, dan co chu V */
.co-field-wrap{position:relative;max-width:440px;margin:0 auto;width:100%;padding:44px 18px 60px}
.co-sun{position:absolute;top:0;left:50%;width:150px;height:150px;margin-left:-75px;border-radius:50%;background:radial-gradient(circle at 42% 38%,#f6cf7d,var(--gold) 58%,var(--gold-deep));box-shadow:0 0 60px rgba(232,176,75,.55);animation:co-sunrise 5s ease-in-out infinite alternate;pointer-events:none}
@keyframes co-sunrise{from{transform:translateY(8px);box-shadow:0 0 40px rgba(232,176,75,.4)}to{transform:translateY(-6px);box-shadow:0 0 76px rgba(232,176,75,.7)}}
.co-arch{position:relative;display:block;margin:56px auto 0;width:min(360px,100%);background:linear-gradient(165deg,var(--leaf),var(--leaf-deep));padding:12px;border-radius:200px 200px 26px 26px;box-shadow:var(--shadow);z-index:2}
.co-arch img{width:100%;aspect-ratio:8/9;object-fit:cover;border-radius:190px 190px 18px 18px}
.co-flock i{position:absolute;width:26px;height:12px;pointer-events:none;z-index:3;animation:co-flap 2.6s ease-in-out infinite alternate}
.co-flock i::before,.co-flock i::after{content:"";position:absolute;top:0;width:14px;height:10px;border-top:3px solid var(--ink);border-radius:50%}
.co-flock i::before{left:0;transform:rotate(-14deg);border-right:none}
.co-flock i::after{right:0;transform:rotate(14deg);border-left:none}
.co-flock i:nth-child(1){left:12%;top:24%}
.co-flock i:nth-child(2){left:20%;top:32%;animation-delay:.5s;transform:scale(.8)}
.co-flock i:nth-child(3){left:6%;top:33%;animation-delay:1s;transform:scale(.7)}
@keyframes co-flap{from{margin-top:-3px}to{margin-top:5px}}
.co-dawntag{position:absolute;bottom:96px;right:-4px;background:var(--leaf-2);color:var(--plume);font-weight:700;font-size:11.5px;letter-spacing:.12em;padding:10px 15px;border:1px solid var(--mist);border-radius:999px;transform:rotate(3deg);box-shadow:var(--shadow);z-index:3}
.co-arch-cap{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);background:rgba(32,42,32,.94);color:var(--plume);font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;border:1px solid var(--gold);white-space:nowrap;z-index:3}

/* Khu vuc chung */
.co-section{padding:84px 0}
.co-section-dusk{background:
  radial-gradient(720px 380px at 88% 8%,rgba(232,176,75,.2),transparent 70%),
  linear-gradient(180deg,var(--ink),var(--ink-2));color:var(--plume)}
.co-section-mist{background:var(--plume-2)}
.co-head{margin-bottom:46px}
.co-head-center{text-align:center}
.co-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;flex-wrap:wrap}
.co-kicker{color:var(--gold-2);font-weight:700;letter-spacing:.16em;text-transform:uppercase;font-size:12.5px;margin-bottom:10px}
.co-kicker-dusk{color:var(--gold)}
.co-kicker-cream{color:var(--plume)}
.co-h2{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,36px);line-height:1.26;color:var(--ink)}
.co-h2-dusk{color:var(--plume)}
.co-head-desc{color:var(--tx-soft);max-width:62ch;margin-top:12px}
.co-head-center .co-head-desc{margin-left:auto;margin-right:auto}
.co-head-desc-dusk{color:rgba(226,236,220,.85)}
.co-no{font-family:var(--font-head);font-size:11.5px;letter-spacing:.18em;color:var(--leaf-deep);font-weight:600}

/* The chuyen muc: go 4x2, vom long tren dinh the */
.co-mounds-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.co-mound{display:flex;flex-direction:column;background:#fff;border:1px solid #dde1d2;border-top:6px solid var(--leaf);border-radius:80px 18px 18px 18px;overflow:hidden;height:100%;transition:transform .3s,box-shadow .3s,border-top-color .25s}
.co-mound:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-top-color:var(--gold)}
.co-mound-media{display:block;position:relative;overflow:hidden}
.co-mound-media img{width:100%;aspect-ratio:9/6.2;object-fit:cover;transition:transform .5s;border-radius:74px 12px 0 0}
.co-mound:hover .co-mound-media img{transform:scale(1.06)}
.co-mound-body{display:flex;flex-direction:column;gap:8px;padding:16px 18px 20px;flex:1;position:relative}
.co-mound-body::after{content:"";position:absolute;left:18px;right:18px;bottom:8px;height:6px;border-radius:3px;background:repeating-linear-gradient(90deg,var(--mist) 0 6px,transparent 6px 14px);opacity:.6}
.co-mound-name{font-family:var(--font-head);font-weight:600;font-size:19px;color:var(--ink)}
.co-mound-desc{font-size:13.5px;color:var(--tx-soft);flex:1}
.co-mound-go{font-size:13.5px;font-weight:700;color:var(--gold-2)}

/* Tieu diem: duong bay, 1 dan lon + 4 dan nho */
.co-sky{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.co-lead{background:var(--plume);color:var(--tx);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--gold)}
.co-lead a{display:flex;flex-direction:column;height:100%}
.co-lead-media img{width:100%;aspect-ratio:8/5.2;object-fit:cover}
.co-lead-body{display:flex;flex-direction:column;gap:12px;padding:26px}
.co-chip{display:inline-flex;align-items:center;width:max-content;background:var(--gold);color:var(--ink-2);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;letter-spacing:.06em}
.co-lead-title{font-family:var(--font-head);font-weight:600;font-size:22px;line-height:1.32;color:var(--ink)}
.co-lead-desc{color:var(--tx-soft);font-size:14.5px}
.co-lead-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--tx-soft);margin-top:auto}
.co-more{font-weight:700;color:var(--gold-2);font-size:13.5px}
.co-trail{display:flex;flex-direction:column;gap:16px;position:relative;padding-left:40px}
.co-trail::before{content:"";position:absolute;left:12px;top:16px;bottom:16px;width:4px;background:repeating-linear-gradient(180deg,var(--gold) 0 12px,transparent 12px 24px);border-radius:2px;opacity:.85}
.co-row a{display:flex;gap:16px;align-items:center;background:rgba(251,251,247,.97);color:var(--tx);border:1px solid rgba(77,124,79,.4);border-radius:6px 999px 999px 6px;padding:15px 22px 15px 14px;position:relative;transition:transform .3s,box-shadow .3s,border-color .25s}
.co-row a:hover{transform:translateX(8px);border-color:var(--gold)}
.co-row-pin{flex-shrink:0;width:46px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(160deg,var(--leaf),var(--leaf-deep));border-radius:80% 20% 60% 40%/90% 60% 40% 10%;transform:rotate(-8deg)}
.co-row-pin b{font-family:var(--font-head);font-weight:600;color:#fff;font-size:13px;transform:rotate(8deg)}
.co-row a:hover .co-row-pin{background:linear-gradient(160deg,var(--gold),var(--gold-deep))}
.co-row-body{display:flex;flex-direction:column;gap:6px}
.co-row-title{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.34;color:var(--ink)}
.co-row-meta{display:flex;gap:12px;font-size:12.5px;color:var(--tx-soft)}
.co-row-meta i{font-style:normal;color:var(--leaf-deep);font-weight:600}

/* Luoi the bai viet */
.co-grid{display:grid;gap:24px}
.co-grid-4{grid-template-columns:repeat(4,1fr)}
.co-card{background:#fff;border-radius:18px;overflow:hidden;border:1px solid #dde1d2;transition:transform .3s,box-shadow .3s}
.co-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.co-card-link{display:flex;flex-direction:column;height:100%}
.co-card-media{position:relative;overflow:hidden;display:block}
.co-card-media img{width:100%;aspect-ratio:8/5.6;object-fit:cover;transition:transform .5s}
.co-card:hover .co-card-media img{transform:scale(1.06)}
.co-card-date{position:absolute;left:12px;bottom:12px;min-width:54px;height:40px;padding:0 10px;background:linear-gradient(135deg,var(--plume),var(--mist));color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-weight:700;font-size:12.5px;border-radius:80% 20% 60% 40%/90% 60% 40% 10%;border:2px solid rgba(77,124,79,.55);transform:rotate(-6deg);box-shadow:0 8px 18px -8px rgba(72,122,110,.8)}
.co-card-body{display:flex;flex-direction:column;gap:9px;padding:18px;flex:1}
.co-card-cat{font-size:12px;font-weight:700;color:var(--leaf-deep);letter-spacing:.1em;text-transform:uppercase}
.co-card-title{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.42;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.co-card-foot{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--tx-soft)}

/* Hoi dap: vut toi tung nhip canh */
.co-faq-shell{max-width:880px}
.co-faq{display:flex;flex-direction:column;gap:14px}
.co-faq-item{background:#fff;border:1px solid #dde1d2;border-left:5px solid var(--gold);border-radius:18px;overflow:hidden}
.co-faq-item[open]{border-color:var(--leaf);border-left-color:var(--leaf);box-shadow:0 0 0 1px var(--leaf)}
.co-faq-item summary{display:flex;align-items:center;gap:16px;padding:18px 24px;cursor:pointer;list-style:none}
.co-faq-item summary::-webkit-details-marker{display:none}
.co-faq-q{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.4;color:var(--ink);flex:1}
.co-faq-ico{position:relative;width:22px;height:22px;flex-shrink:0}
.co-faq-ico::before,.co-faq-ico::after{content:"";position:absolute;background:var(--leaf-deep);border-radius:2px;transition:transform .3s}
.co-faq-ico::before{left:0;top:10px;width:22px;height:2px}
.co-faq-ico::after{left:10px;top:0;width:2px;height:22px}
.co-faq-item[open] .co-faq-ico::after{transform:rotate(90deg)}
.co-faq-a{padding:0 24px 20px 62px;color:var(--tx-soft);font-size:14.5px}

/* Dai gioi thieu: dong chieu vang ong */
.co-about{background:
  radial-gradient(660px 340px at 84% 16%,rgba(232,176,75,.26),transparent 70%),
  radial-gradient(560px 320px at 6% 92%,rgba(127,181,168,.2),transparent 70%),
  linear-gradient(180deg,var(--leaf-2),var(--ink-2));
  color:var(--plume);padding:84px 0}
.co-about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.co-about-title{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,36px);margin-bottom:16px;color:var(--plume)}
.co-about-desc{color:#dce6d4;margin-bottom:28px;max-width:56ch}
.co-about-stats{display:flex;gap:34px;margin-bottom:32px}
.co-about-stats li{display:flex;flex-direction:column;gap:4px;border-left:3px solid var(--gold);padding-left:14px}
.co-about-stats strong{font-family:var(--font-head);font-weight:600;font-size:26px;color:var(--gold)}
.co-about-stats span{font-size:12.5px;color:#b3c4a8}
.co-about-media{position:relative}
.co-about-frame{display:block;border:3px solid var(--mist);outline:2px solid var(--gold);outline-offset:6px;border-radius:34px;overflow:hidden;box-shadow:var(--shadow)}
.co-about-frame img{width:100%;aspect-ratio:12/8.5;object-fit:cover;border-radius:30px}
.co-about-cap{position:absolute;bottom:-14px;left:24px;background:var(--gold);color:var(--ink-2);font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;border:2px solid var(--plume)}

/* Bang ron trang trong */
.co-ibanner{position:relative;background:
  radial-gradient(620px 240px at 88% 0%,rgba(232,176,75,.26),transparent 70%),
  linear-gradient(180deg,var(--leaf-2),var(--ink-2));color:var(--plume);padding:56px 0;overflow:hidden}
.co-ibanner-flock,.co-ibanner-sky{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.co-ibanner-flock i,.co-ibanner-sky i{position:absolute;width:22px;height:10px;animation:co-flap 4.5s ease-in-out infinite alternate}
.co-ibanner-flock i::before,.co-ibanner-sky i::before{content:"";position:absolute;left:0;top:0;width:12px;height:8px;border-top:2.5px solid rgba(232,176,75,.85);border-radius:50%;transform:rotate(-14deg)}
.co-ibanner-flock i::after,.co-ibanner-sky i::after{content:"";position:absolute;right:0;top:0;width:12px;height:8px;border-top:2.5px solid rgba(232,176,75,.85);border-radius:50%;transform:rotate(14deg)}
.co-ibanner-flock i:nth-child(1),.co-ibanner-sky i:nth-child(1){left:7%;top:16px}
.co-ibanner-flock i:nth-child(2),.co-ibanner-sky i:nth-child(2){left:26%;bottom:14px;animation-delay:1.1s;transform:scale(.8)}
.co-ibanner-flock i:nth-child(3),.co-ibanner-sky i:nth-child(3){left:47%;top:10px;animation-delay:2.2s}
.co-ibanner-flock i:nth-child(4),.co-ibanner-sky i:nth-child(4){left:69%;bottom:18px;animation-delay:3.1s;transform:scale(.7)}
.co-ibanner-flock i:nth-child(5),.co-ibanner-sky i:nth-child(5){left:89%;top:24px;animation-delay:3.9s;transform:scale(.9)}
.co-ibanner-in{position:relative}
.co-ibanner-title{font-family:var(--font-head);font-weight:600;font-size:clamp(28px,3.4vw,42px);margin:12px 0 10px;color:var(--plume)}
.co-ibanner-desc{color:#dce6d4;max-width:64ch;font-size:15px}

/* Duong dan */
.co-crumb{padding:18px 0 0}
.co-crumb-list{display:flex;align-items:center;gap:10px;flex-wrap:wrap;list-style:none;margin:0;padding:0;font-size:13.5px;color:#b9ccb0}
.co-crumb-list li{display:flex;align-items:center;gap:10px}
.co-crumb-list li+li::before{content:"\203A";color:var(--gold);font-size:14px;font-weight:700}
.co-crumb-list a{color:var(--gold);font-weight:600}
.co-crumb-list a:hover{text-decoration:underline}
.co-crumb-list strong{color:var(--plume);font-weight:600}
.co-crumb-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--tx-soft)}
.co-crumb-line a{color:var(--gold-2);font-weight:600}
.co-crumb-line a:hover{text-decoration:underline}
.co-crumb-sep{color:var(--leaf-deep);font-size:10px}
.co-crumb-now{font-weight:700;color:var(--ink)}
.co-ibanner .co-crumb{padding:0}

/* Dau trang noi dung */
.co-page{padding-top:56px}
.co-page-head{margin-bottom:40px}
.co-page-h1{font-family:var(--font-head);font-weight:600;font-size:clamp(28px,3.2vw,40px);color:var(--ink);margin-bottom:14px}
.co-page-desc{color:var(--tx-soft);max-width:70ch;margin-bottom:24px}
.co-page-acts{display:flex;gap:14px;flex-wrap:wrap}

/* Chuyen muc khac */
.co-other{margin-top:56px}
.co-block-h,.co-other-title,.co-rel-title{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--ink);margin-bottom:22px}
.co-other-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.co-other-list a{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid #dde1d2;border-radius:6px 999px 999px 6px;padding:16px 18px;transition:transform .25s,box-shadow .25s}
.co-other-list a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.co-other-body{display:flex;flex-direction:column;gap:4px;flex:1}
.co-other-body strong{font-family:var(--font-head);font-weight:600;font-size:16px;color:var(--ink)}
.co-other-body span{font-size:13px;color:var(--tx-soft)}
.co-other-go{color:var(--gold-2);font-size:20px;font-weight:700}

/* Trang danh sach */
.co-list-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start}
.co-rows{display:flex;flex-direction:column;gap:18px}
.co-lrow{background:#fff;border:1px solid #dde1d2;border-radius:18px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.co-lrow:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.co-lrow-link{display:grid;grid-template-columns:230px 1fr 74px}
.co-lrow-media img{width:100%;height:100%;object-fit:cover}
.co-lrow-body{display:flex;flex-direction:column;gap:8px;padding:18px 20px}
.co-lrow-meta i{font-style:normal;font-size:12px;font-weight:700;color:var(--leaf-deep);letter-spacing:.1em;text-transform:uppercase}
.co-lrow-title{font-family:var(--font-head);font-weight:600;font-size:18px;line-height:1.36;color:var(--ink)}
.co-lrow-desc{font-size:13.5px;color:var(--tx-soft)}
.co-lrow-date{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:var(--leaf-2);color:var(--plume);padding:10px}
.co-lrow-date b{font-family:var(--font-head);font-weight:600;font-size:26px;line-height:1;color:var(--gold)}
.co-lrow-date i{font-style:normal;font-size:11px;letter-spacing:.08em;color:var(--plume)}
.co-pagi{display:flex;gap:8px;margin-top:30px;flex-wrap:wrap}
.co-pagi a,.co-pagi button{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #dde1d2;background:#fff;color:var(--tx);border-radius:999px;font-weight:700;font-size:14px;cursor:pointer;padding:0 12px;font-family:var(--font-body)}
.co-pagi .is-cur{background:var(--gold);border-color:var(--gold);color:var(--ink-2)}
.co-pagi .is-dis{opacity:.45;pointer-events:none}
.co-pagi a:hover:not(.is-cur){border-color:var(--gold);color:var(--gold-2)}

/* Cot ben */
.co-side{display:flex;flex-direction:column;gap:26px;position:sticky;top:96px}
.co-side-box{background:#fff;border:1px solid #dde1d2;border-radius:18px;padding:22px}
.co-side-h{font-family:var(--font-head);font-weight:600;font-size:18px;color:var(--ink);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--gold)}
.co-side-hot{display:flex;flex-direction:column;gap:14px}
.co-side-hot a{display:grid;grid-template-columns:76px 1fr;gap:12px;align-items:center}
.co-side-hot img{width:76px;height:58px;object-fit:cover;border-radius:14px;border:2px solid var(--mist)}
.co-side-hot-body{display:flex;flex-direction:column;gap:3px}
.co-side-hot-body strong{font-size:13.5px;font-weight:600;line-height:1.4;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.co-side-hot-body time{font-size:11.5px;color:var(--tx-soft)}
.co-side-more{display:inline-flex;gap:6px;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--gold-2)}
.co-side-list{display:flex;flex-direction:column;gap:12px}
.co-side-list a{display:flex;gap:12px;align-items:baseline;font-size:13.5px;color:var(--ink)}
.co-side-list a:hover{color:var(--gold-2)}
.co-dot{width:24px;height:26px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:var(--plume);border:2px solid var(--gold);border-radius:80% 20% 60% 40%/90% 60% 40% 10%;font-size:12px;font-weight:800;transform:translateY(4px)}
.co-side-note{background:var(--ink);border-color:var(--line)}
.co-side-note .co-side-h{color:var(--plume);border-color:var(--gold)}
.co-side-note p{color:#dce6d4;font-size:13.5px;margin-bottom:16px}

/* Trang bai viet */
.co-article-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start}
.co-article-h1{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,38px);line-height:1.32;color:var(--ink);margin-bottom:18px}
.co-article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--tx-soft);margin-bottom:24px}
.co-meta-item b{color:var(--gold-2)}
.co-article-figure{margin-bottom:26px;border-radius:18px;overflow:hidden;border:1px solid #dde1d2}
.co-article-figure img{width:100%;height:auto}
.co-article-body{font-size:16px;color:var(--tx)}
.co-article-body p{margin-bottom:18px}
.co-article-body h2{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--ink);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--gold)}
.co-article-body h3{font-family:var(--font-head);font-weight:600;font-size:19px;color:var(--ink);margin:26px 0 12px}
.co-article-body ul,.co-article-body ol{margin:0 0 18px 22px;list-style:disc}
.co-article-body ol{list-style:decimal}
.co-article-body li{margin-bottom:8px}
.co-article-body img{border-radius:12px;margin:20px 0}
.co-article-body blockquote{border-left:4px solid var(--leaf);background:var(--plume-2);padding:16px 20px;border-radius:0 12px 12px 0;margin:0 0 18px;color:var(--tx-soft);font-style:italic}
.co-article-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px;padding-top:22px;border-top:1px solid #dde1d2}
.co-tag-label{font-size:13px;color:var(--tx-soft)}
.co-tag{background:var(--plume-2);border:1px solid #dde1d2;color:var(--tx);font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:999px;transition:all .25s}
.co-tag:hover{background:var(--gold);border-color:var(--gold);color:var(--ink-2)}
.co-switcher{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:34px 0 44px}
.co-switcher-cell{background:#fff;border:1px solid #dde1d2;border-radius:18px;padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.co-switcher-next{text-align:right}
.co-switcher-label{font-size:12px;font-weight:700;color:var(--leaf-deep);letter-spacing:.12em;text-transform:uppercase}
.co-switcher-link{font-family:var(--font-head);font-weight:600;font-size:15px;color:var(--ink)}
.co-switcher-link:hover{color:var(--gold-2)}
.co-switcher-empty{font-size:13.5px;color:var(--tx-soft)}

/* Lien ket website */
.co-flink{background:var(--plume-2);padding:56px 0}
.co-flink-head{text-align:center;margin-bottom:30px}
.co-flink-title{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--ink);margin-bottom:8px}
.co-flink-note{color:var(--tx-soft);font-size:14px}
.co-flink-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.co-flink-chip{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #dde1d2;border-radius:999px;padding:10px 20px 10px 10px;font-weight:600;font-size:14px;color:var(--ink);transition:transform .25s,box-shadow .25s}
.co-flink-chip:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.co-flink-logo{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--mist)}

/* Chan trang */
.co-footer{background:var(--ink-2);color:var(--plume);padding-bottom:36px}
.co-string{display:flex;justify-content:center;gap:14px;padding:20px 0 14px}
.co-string i{display:block;width:14px;height:20px;background:linear-gradient(180deg,var(--plume),var(--mist));border-radius:80% 20% 60% 40%/90% 60% 40% 10%;opacity:.75;transform:rotate(16deg)}
.co-string i:nth-child(2n){opacity:.5;height:14px;width:10px}
.co-string i:nth-child(3n){height:24px;width:16px;opacity:.9}
.co-string-foot{margin-bottom:32px;border-bottom:1px solid rgba(251,251,247,.18);padding-bottom:24px}
.co-foot-top{display:flex;align-items:center;gap:30px;flex-wrap:wrap;margin-bottom:44px}
.co-fbrand{display:flex;align-items:center}
.co-fbrand-img{height:56px;width:auto}
.co-foot-slogan{color:#b9ccb0;font-size:14px;max-width:52ch}
.co-foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(251,251,247,.18);margin-bottom:26px}
.co-foot-h{font-family:var(--font-head);font-weight:600;font-size:17px;color:var(--plume);margin-bottom:16px}
.co-foot-list{display:flex;flex-direction:column;gap:10px}
.co-foot-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.co-foot-list a{color:#dce6d4;font-size:14px;transition:color .25s,padding-left .25s}
.co-foot-list a:hover{color:var(--plume);padding-left:4px}
.co-foot-info{display:flex;flex-direction:column;gap:12px}
.co-foot-info li{display:flex;flex-direction:column;gap:2px}
.co-foot-key{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);font-weight:700}
.co-foot-val{font-size:14px;color:var(--plume)}
.co-foot-copy{font-size:13px;color:#9ab090;margin-bottom:14px}
.co-foot-meta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:#9ab090}
.co-foot-sitemap{color:var(--gold)}
.co-foot-sitemap:hover{text-decoration:underline}

/* Nut len dau trang */
.co-top-btn{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:999px;background:var(--gold);color:var(--ink-2);border:2px solid var(--plume);font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;z-index:80}
.co-top-btn.is-on{opacity:1;visibility:visible;transform:none}
.co-top-btn:hover{background:var(--gold-deep);color:#fff}

/* Trang 404 */
.co-404{padding:110px 0;background:
  radial-gradient(700px 340px at 50% 0%,rgba(232,176,75,.22),transparent 70%),
  var(--ink);color:var(--plume)}
.co-404-board{max-width:640px;margin:0 auto;text-align:center;padding:0 24px}
.co-404-code{display:block;font-family:var(--font-head);font-weight:600;font-size:120px;line-height:1;color:transparent;-webkit-text-stroke:2px var(--gold);margin-bottom:16px}
.co-404-kicker{color:var(--gold);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:13px;margin-bottom:12px}
.co-404-title{font-family:var(--font-head);font-weight:600;font-size:32px;margin-bottom:14px;color:var(--plume)}
.co-404-desc{color:#dce6d4;margin-bottom:30px}
.co-404-acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Khung phu: cot noi dung, cot chan trang, muc lien quan */
.co-hero-copy,.co-about-copy,.co-foot-col,.co-list-main,.co-show-main{min-width:0}
.co-foot-base{margin-top:4px}
.co-related{margin-top:8px}

/* Hieu ung hien dan, chi bat khi co js */
html.co-js .co-reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
html.co-js .co-reveal.is-in{opacity:1;transform:none}

/* Dap ung man hinh */
@media(max-width:1100px){
  .co-mounds-grid,.co-grid-4{grid-template-columns:repeat(2,1fr)}
  .co-nav{display:none}
  .co-burger{display:flex}
  .co-hero-in{grid-template-columns:1fr;gap:44px}
  .co-field-wrap{max-width:400px}
}
@media(max-width:900px){
  .co-sky{grid-template-columns:1fr}
  .co-list-wrap,.co-article-wrap{grid-template-columns:1fr}
  .co-side{position:static}
  .co-about-wrap{grid-template-columns:1fr;gap:44px}
  .co-foot-grid{grid-template-columns:1fr;gap:30px}
  .co-other-list{grid-template-columns:1fr}
}
@media(max-width:640px){
  .co-section{padding:60px 0}
  .co-hero{padding:60px 0 90px}
  .co-hero-stats{gap:22px;flex-wrap:wrap}
  .co-mounds-grid,.co-grid-4{grid-template-columns:1fr}
  .co-lrow-link{grid-template-columns:120px 1fr}
  .co-lrow-date{display:none}
  .co-switcher{grid-template-columns:1fr}
  .co-switcher-next{text-align:left}
  .co-faq-a{padding-left:24px}
  .co-head-split{align-items:flex-start;flex-direction:column}
  .co-foot-cats{grid-template-columns:1fr 1fr}
  .co-dawntag{font-size:10px;padding:8px 12px;right:0}
  .co-sun{width:110px;height:110px;margin-left:-55px}
  .co-field-wrap{padding:34px 12px 54px}
}