/* CAU TRE VIET - giao dien cau tre mien Tay (mau 1284) */
/* Bang mau: tre kho, reu xanh, kenh xanh, rung chieu, giay trang */
:root{
  --bamboo:#c99e5f;
  --bamboo-deep:#a87e44;
  --bamboo-2:#86622f;
  --moss:#5d7a4e;
  --moss-deep:#465e38;
  --moss-2:#334628;
  --river:#7ba8a0;
  --river-deep:#5e8a82;
  --river-2:#476c66;
  --amber:#d9833f;
  --amber-deep:#b5662c;
  --amber-2:#92501f;
  --paper:#f7f2e6;
  --paper-2:#e8e0cc;
  --dusk:#33413a;
  --dusk-2:#243029;
  --line:rgba(51,65,58,.22);
  --tx:#33352e;
  --tx-soft:#7d7c6e;
  --shadow:0 18px 44px -18px rgba(36,48,41,.5);
  --radius:16px;
  --font-head:'Spectral',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.cu-body{
  font-family:var(--font-body);
  color:var(--tx);
  background:var(--paper);
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;
}
.cu-shell{max-width:1240px;margin:0 auto;padding:0 24px}
.cu-skip{position:absolute;left:-9999px;top:0;background:var(--amber);color:#fff;padding:10px 18px;z-index:200;border-radius:0 0 12px 0}
.cu-skip:focus{left:0}

/* Dai day buoc: ba moi day ngang tren nen rung chieu */
.cu-lashband{position:relative;height:22px;background:linear-gradient(180deg,var(--dusk),var(--dusk-2));border-bottom:3px solid var(--bamboo);overflow:hidden}
.cu-lash{position:absolute;top:6px;width:120px;height:10px;background:repeating-linear-gradient(90deg,var(--bamboo) 0 8px,transparent 8px 14px);opacity:.8;border-radius:3px;animation:cu-lashslide 7s ease-in-out infinite alternate}
.cu-lash:nth-child(1){left:9%}
.cu-lash:nth-child(2){left:43%;animation-delay:2.2s;width:90px}
.cu-lash:nth-child(3){left:75%;animation-delay:4s;width:140px}
@keyframes cu-lashslide{from{transform:translateX(-20px);opacity:.5}to{transform:translateX(20px);opacity:.9}}

/* Dau trang */
.cu-header{position:sticky;top:0;z-index:90;background:rgba(36,48,41,.97);backdrop-filter:blur(8px);border-bottom:3px solid var(--bamboo-deep)}
.cu-header-in{display:flex;align-items:center;gap:28px;padding:14px 24px}
.cu-brand{display:flex;align-items:center;flex-shrink:0}
.cu-brand-img{height:52px;width:auto}
.cu-nav{margin-left:auto}
.cu-nav-list{display:flex;gap:4px;flex-wrap:wrap}
.cu-nav-a{display:block;padding:10px 14px;font-size:14px;font-weight:600;color:#e4ead9;border-radius:999px;transition:color .25s,background .25s}
.cu-nav-a:hover{color:#fff;background:rgba(201,158,95,.22)}
.cu-nav-a.is-active{color:var(--dusk-2);background:var(--bamboo)}
.cu-burger{display:none;width:46px;height:46px;border:1px solid rgba(247,242,230,.4);background:transparent;border-radius:999px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.cu-burger span{display:block;width:20px;height:2px;background:var(--paper);border-radius:2px;transition:transform .3s,opacity .3s}
.cu-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.cu-burger.is-open span:nth-child(2){opacity:0}
.cu-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Menu di dong: cau tre ha xuong, tam van xen ke hai bo */
.cu-scrim{position:fixed;inset:0;background:rgba(28,38,34,.72);opacity:0;visibility:hidden;transition:opacity .4s,visibility .4s;z-index:97}
.cu-scrim.is-on{opacity:1;visibility:visible}
.cu-plankmenu{position:fixed;inset:0;z-index:99;background:
  radial-gradient(720px 400px at 10% 8%,rgba(123,168,160,.18),transparent 66%),
  radial-gradient(640px 420px at 90% 94%,rgba(201,158,95,.16),transparent 68%),
  linear-gradient(180deg,var(--dusk),var(--dusk-2));
  transform:translateY(-104%);visibility:hidden;transition:transform .55s cubic-bezier(.3,1.05,.4,1),visibility .55s;overflow:hidden;border-radius:0 0 40px 40px}
.cu-plankmenu.is-open{transform:none;visibility:visible}
.cu-rail{position:absolute;top:0;bottom:0;width:8px;background:repeating-linear-gradient(180deg,var(--bamboo) 0 14px,var(--bamboo-deep) 14px 28px);opacity:.65;pointer-events:none}
.cu-rail-l{left:18px}
.cu-rail-r{right:18px}
.cu-plankmenu-in{position:relative;display:flex;flex-direction:column;justify-content:center;height:100%;padding:52px 34px 44px;overflow-y:auto}
.cu-plankmenu-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;max-width:560px;margin-left:auto;margin-right:auto;width:100%}
.cu-plankmenu-title{font-family:var(--font-head);font-size:22px;color:var(--paper)}
.cu-plankmenu-close{width:46px;height:46px;border:1px solid rgba(247,242,230,.4);background:transparent;color:var(--paper);font-size:26px;border-radius:50%;cursor:pointer;line-height:1}
.cu-plankmenu-list{display:flex;flex-direction:column;gap:12px;max-width:560px;margin:0 auto;width:100%}
.cu-plankmenu-list a{display:flex;align-items:center;gap:14px;padding:13px 20px;border:1px solid rgba(201,158,95,.5);border-radius:8px;color:var(--paper);background:linear-gradient(180deg,rgba(201,158,95,.16),rgba(201,158,95,.07));opacity:0;transition:transform .5s cubic-bezier(.3,1.12,.4,1),opacity .5s,border-color .25s,background .25s;position:relative}
.cu-plankmenu-list a::before,.cu-plankmenu-list a::after{content:"";position:absolute;top:6px;bottom:6px;width:5px;background:repeating-linear-gradient(180deg,var(--bamboo) 0 4px,transparent 4px 8px);border-radius:2px;opacity:.8}
.cu-plankmenu-list a::before{left:5px}
.cu-plankmenu-list a::after{right:5px}
.cu-plankmenu-list li:nth-child(2n) a{transform:translateX(-40px)}
.cu-plankmenu-list li:nth-child(2n+1) a{transform:translateX(40px)}
.cu-plankmenu.is-open .cu-plankmenu-list a{transform:none;opacity:1}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(1) a{transition-delay:.16s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(2) a{transition-delay:.22s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(3) a{transition-delay:.28s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(4) a{transition-delay:.34s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(5) a{transition-delay:.4s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(6) a{transition-delay:.46s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(7) a{transition-delay:.52s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(8) a{transition-delay:.58s}
.cu-plankmenu.is-open .cu-plankmenu-list li:nth-child(9) a{transition-delay:.64s}
.cu-plankmenu-list a:hover{border-color:var(--amber);background:rgba(217,131,63,.16)}
.cu-knot{position:relative;width:18px;height:18px;flex-shrink:0;border-radius:50%;border:4px solid var(--amber);background:transparent;margin-left:8px}
.cu-knot::after{content:"";position:absolute;left:2px;top:2px;right:2px;bottom:2px;border-radius:50%;background:var(--amber);opacity:.4}
.cu-plankmenu-no{font-family:var(--font-head);color:var(--bamboo);font-size:12px;letter-spacing:.1em;flex-shrink:0}
.cu-plankmenu-name{font-size:16px;font-weight:600;flex:1}
.cu-plankmenu-note{margin-top:26px;text-align:center;color:var(--river);font-size:13px;opacity:.95}

/* Khoi anh hung: vom cau cong, cot day hai ben */
.cu-hero{background:
  radial-gradient(760px 440px at 90% 8%,rgba(123,168,160,.22),transparent 66%),
  radial-gradient(560px 380px at 0% 96%,rgba(201,158,95,.16),transparent 70%),
  linear-gradient(180deg,var(--paper-2),var(--paper) 80%);
  color:var(--tx);padding:88px 0 118px;overflow:hidden}
.cu-hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.cu-hero-kicker{display:flex;align-items:center;gap:10px;color:var(--moss-deep);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:13px;margin-bottom:18px}
.cu-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(--dusk)}
.cu-hero-desc{color:var(--tx-soft);font-size:16.5px;max-width:52ch;margin-bottom:30px}
.cu-hero-acts{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.cu-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}
.cu-btn b{font-weight:700}
.cu-btn:hover{transform:translateY(-2px)}
.cu-btn-amber{background:var(--amber);color:#fff;box-shadow:0 12px 26px -12px rgba(217,131,63,.95)}
.cu-btn-amber:hover{background:var(--amber-deep)}
.cu-btn-gold{background:var(--amber);color:#fff;box-shadow:0 12px 26px -12px rgba(217,131,63,.95)}
.cu-btn-gold:hover{background:var(--amber-deep)}
.cu-btn-bamboo{background:var(--bamboo-deep);color:#fff;box-shadow:0 12px 26px -12px rgba(168,126,68,.95)}
.cu-btn-bamboo:hover{background:var(--bamboo-2)}
.cu-btn-line{border-color:var(--moss);color:var(--moss-deep);background:transparent}
.cu-btn-line:hover{background:rgba(255,255,255,.7)}
.cu-btn-ghost{border-color:#d8d0ba;color:var(--tx);background:transparent}
.cu-btn-ghost:hover{border-color:var(--amber);color:var(--amber-deep)}
.cu-hero-stats{display:flex;gap:38px}
.cu-hero-stats li{display:flex;flex-direction:column;gap:4px;border-left:3px solid var(--amber);padding-left:16px}
.cu-hero-stats strong{font-family:var(--font-head);font-weight:600;font-size:30px;color:var(--moss-deep)}
.cu-hero-stats span{font-size:13px;color:var(--tx-soft)}

/* Hinh cau: vom cong do duoi, bon cot buoc day */
.cu-span-wrap{position:relative;max-width:460px;margin:0 auto;width:100%;padding:64px 16px 60px}
.cu-arch{position:absolute;left:6%;right:6%;bottom:38px;height:90px;border:6px solid var(--bamboo-deep);border-top:none;border-radius:0 0 220px 220px;pointer-events:none;opacity:.85}
.cu-deck{position:relative;display:block;margin:0 auto;width:min(400px,100%);background:linear-gradient(165deg,var(--bamboo),var(--bamboo-deep));padding:10px;border-radius:22px;box-shadow:var(--shadow);z-index:2;transform:rotate(-1.2deg)}
.cu-deck img{width:100%;aspect-ratio:8/6.4;object-fit:cover;border-radius:15px}
.cu-posts i{position:absolute;width:12px;height:56px;background:linear-gradient(180deg,var(--bamboo),var(--bamboo-deep));border-radius:4px;bottom:64px;pointer-events:none;z-index:1}
.cu-posts i::before{content:"";position:absolute;left:-3px;top:8px;width:18px;height:5px;background:var(--amber);border-radius:2px;transform:rotate(-8deg)}
.cu-posts i:nth-child(1){left:8%}
.cu-posts i:nth-child(2){left:34%;height:48px}
.cu-posts i:nth-child(3){right:34%;height:48px}
.cu-posts i:nth-child(4){right:8%}
.cu-rivertag{position:absolute;top:30px;right:-2px;background:var(--river-2);color:var(--paper);font-weight:700;font-size:11.5px;letter-spacing:.12em;padding:10px 15px;border:1px solid var(--river);border-radius:999px;transform:rotate(3deg);box-shadow:var(--shadow);z-index:3}
.cu-deck-cap{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);background:rgba(36,48,41,.94);color:var(--paper);font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;border:1px solid var(--amber);white-space:nowrap;z-index:3}

/* Khu vuc chung */
.cu-section{padding:84px 0}
.cu-section-dusk{background:
  radial-gradient(720px 380px at 88% 8%,rgba(123,168,160,.2),transparent 70%),
  linear-gradient(180deg,var(--dusk),var(--dusk-2));color:var(--paper)}
.cu-section-mist{background:var(--paper-2)}
.cu-head{margin-bottom:46px}
.cu-head-center{text-align:center}
.cu-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cu-kicker{color:var(--amber-deep);font-weight:700;letter-spacing:.16em;text-transform:uppercase;font-size:12.5px;margin-bottom:10px}
.cu-kicker-dusk{color:var(--bamboo)}
.cu-kicker-cream{color:var(--paper)}
.cu-h2{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,36px);line-height:1.26;color:var(--dusk)}
.cu-h2-dusk{color:var(--paper)}
.cu-head-desc{color:var(--tx-soft);max-width:62ch;margin-top:12px}
.cu-head-center .cu-head-desc{margin-left:auto;margin-right:auto}
.cu-head-desc-dusk{color:rgba(228,234,217,.85)}
.cu-no{font-family:var(--font-head);font-size:11.5px;letter-spacing:.18em;color:var(--moss-deep);font-weight:600}

/* The chuyen muc: nhip 4x2, mep buoc day hai ben the */
.cu-spans-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cu-span{display:flex;flex-direction:column;background:#fff;border:1px solid #ddd6c0;border-left:5px solid var(--bamboo);border-right:5px solid var(--bamboo);border-radius:14px;overflow:hidden;height:100%;transition:transform .3s,box-shadow .3s,border-color .25s}
.cu-span:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-left-color:var(--amber);border-right-color:var(--amber)}
.cu-span-media{display:block;position:relative;overflow:hidden}
.cu-span-media img{width:100%;aspect-ratio:9/6;object-fit:cover;transition:transform .5s}
.cu-span:hover .cu-span-media img{transform:scale(1.06)}
.cu-span-body{display:flex;flex-direction:column;gap:8px;padding:16px 18px 20px;flex:1;position:relative}
.cu-span-body::after{content:"";position:absolute;left:18px;right:18px;bottom:8px;height:6px;border-radius:3px;background:repeating-linear-gradient(90deg,var(--river) 0 7px,transparent 7px 14px);opacity:.6}
.cu-span-name{font-family:var(--font-head);font-weight:600;font-size:19px;color:var(--dusk)}
.cu-span-desc{font-size:13.5px;color:var(--tx-soft);flex:1}
.cu-span-go{font-size:13.5px;font-weight:700;color:var(--amber-deep)}

/* Tieu diem: than cau, 1 nhip lon + 4 nhip nho */
.cu-girder{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.cu-lead{background:var(--paper);color:var(--tx);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--bamboo-deep)}
.cu-lead a{display:flex;flex-direction:column;height:100%}
.cu-lead-media img{width:100%;aspect-ratio:8/5.2;object-fit:cover}
.cu-lead-body{display:flex;flex-direction:column;gap:12px;padding:26px}
.cu-chip{display:inline-flex;align-items:center;width:max-content;background:var(--amber);color:var(--paper);font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;letter-spacing:.06em}
.cu-lead-title{font-family:var(--font-head);font-weight:600;font-size:22px;line-height:1.32;color:var(--dusk)}
.cu-lead-desc{color:var(--tx-soft);font-size:14.5px}
.cu-lead-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--tx-soft);margin-top:auto}
.cu-more{font-weight:700;color:var(--amber-deep);font-size:13.5px}
.cu-ties{display:flex;flex-direction:column;gap:16px;position:relative;padding-left:40px}
.cu-ties::before{content:"";position:absolute;left:12px;top:16px;bottom:16px;width:8px;background:repeating-linear-gradient(180deg,var(--bamboo) 0 12px,var(--bamboo-deep) 12px 24px);border-radius:3px;opacity:.8}
.cu-row a{display:flex;gap:16px;align-items:center;background:rgba(247,242,230,.97);color:var(--tx);border:1px solid rgba(93,122,78,.45);border-radius:8px;padding:15px 20px;position:relative;transition:transform .3s,box-shadow .3s,border-color .25s}
.cu-row a:hover{transform:translateX(8px);border-color:var(--amber)}
.cu-row-pin{flex-shrink:0;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:5px solid var(--moss);border-radius:50%}
.cu-row-pin b{font-family:var(--font-head);font-weight:600;color:var(--moss-deep);font-size:13px}
.cu-row a:hover .cu-row-pin{border-color:var(--amber)}
.cu-row a:hover .cu-row-pin b{color:var(--amber-deep)}
.cu-row-body{display:flex;flex-direction:column;gap:6px}
.cu-row-title{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.34;color:var(--dusk)}
.cu-row-meta{display:flex;gap:12px;font-size:12.5px;color:var(--tx-soft)}
.cu-row-meta i{font-style:normal;color:var(--moss-deep);font-weight:600}

/* Luoi the bai viet */
.cu-grid{display:grid;gap:24px}
.cu-grid-4{grid-template-columns:repeat(4,1fr)}
.cu-card{background:#fff;border-radius:14px;overflow:hidden;border:1px solid #ddd6c0;transition:transform .3s,box-shadow .3s}
.cu-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.cu-card-link{display:flex;flex-direction:column;height:100%}
.cu-card-media{position:relative;overflow:hidden;display:block}
.cu-card-media img{width:100%;aspect-ratio:8/5.6;object-fit:cover;transition:transform .5s}
.cu-card:hover .cu-card-media img{transform:scale(1.06)}
.cu-card-date{position:absolute;left:12px;bottom:12px;width:56px;height:56px;border-radius:50%;background:var(--paper);color:var(--amber-deep);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-weight:700;font-size:12px;border:5px solid var(--amber);box-shadow:0 8px 18px -8px rgba(146,80,31,.8)}
.cu-card-body{display:flex;flex-direction:column;gap:9px;padding:18px;flex:1}
.cu-card-cat{font-size:12px;font-weight:700;color:var(--moss-deep);letter-spacing:.1em;text-transform:uppercase}
.cu-card-title{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.42;color:var(--dusk);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.cu-card-foot{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--tx-soft)}

/* Hoi dap: buoc toi tung nhip cau */
.cu-faq-shell{max-width:880px}
.cu-faq{display:flex;flex-direction:column;gap:14px}
.cu-faq-item{background:#fff;border:1px solid #ddd6c0;border-left:5px solid var(--bamboo);border-radius:14px;overflow:hidden}
.cu-faq-item[open]{border-color:var(--amber);border-left-color:var(--amber);box-shadow:0 0 0 1px var(--amber)}
.cu-faq-item summary{display:flex;align-items:center;gap:16px;padding:18px 24px;cursor:pointer;list-style:none}
.cu-faq-item summary::-webkit-details-marker{display:none}
.cu-faq-q{font-family:var(--font-head);font-weight:600;font-size:16px;line-height:1.4;color:var(--dusk);flex:1}
.cu-faq-ico{position:relative;width:22px;height:22px;flex-shrink:0}
.cu-faq-ico::before,.cu-faq-ico::after{content:"";position:absolute;background:var(--moss-deep);border-radius:2px;transition:transform .3s}
.cu-faq-ico::before{left:0;top:10px;width:22px;height:2px}
.cu-faq-ico::after{left:10px;top:0;width:2px;height:22px}
.cu-faq-item[open] .cu-faq-ico::after{transform:rotate(90deg)}
.cu-faq-a{padding:0 24px 20px 62px;color:var(--tx-soft);font-size:14.5px}

/* Dai gioi thieu: chieu vang tren mat kenh */
.cu-about{background:
  radial-gradient(660px 340px at 84% 16%,rgba(217,131,63,.2),transparent 70%),
  radial-gradient(560px 320px at 6% 92%,rgba(123,168,160,.2),transparent 70%),
  linear-gradient(180deg,var(--dusk),var(--dusk-2));
  color:var(--paper);padding:84px 0}
.cu-about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cu-about-title{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,36px);margin-bottom:16px;color:var(--paper)}
.cu-about-desc{color:#d6ded0;margin-bottom:28px;max-width:56ch}
.cu-about-stats{display:flex;gap:34px;margin-bottom:32px}
.cu-about-stats li{display:flex;flex-direction:column;gap:4px;border-left:3px solid var(--amber);padding-left:14px}
.cu-about-stats strong{font-family:var(--font-head);font-weight:600;font-size:26px;color:var(--bamboo)}
.cu-about-stats span{font-size:12.5px;color:#aebba4}
.cu-about-media{position:relative}
.cu-about-frame{display:block;border:3px solid var(--river);outline:2px solid var(--amber);outline-offset:6px;border-radius:34px;overflow:hidden;box-shadow:var(--shadow)}
.cu-about-frame img{width:100%;aspect-ratio:12/8.5;object-fit:cover;border-radius:30px}
.cu-about-cap{position:absolute;bottom:-14px;left:24px;background:var(--amber);color:#fff;font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;border:2px solid var(--paper)}

/* Bang ron trang trong */
.cu-ibanner{position:relative;background:
  radial-gradient(620px 240px at 88% 0%,rgba(123,168,160,.26),transparent 70%),
  linear-gradient(180deg,var(--dusk),var(--dusk-2));color:var(--paper);padding:56px 0;overflow:hidden}
.cu-ibanner-planks,.cu-ibanner-sky{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.cu-ibanner-planks i,.cu-ibanner-sky i{position:absolute;width:26px;height:12px;background:repeating-linear-gradient(90deg,var(--bamboo) 0 5px,var(--bamboo-deep) 5px 9px);border-radius:3px;opacity:.8;animation:cu-plankfloat 5s ease-in-out infinite alternate}
.cu-ibanner-planks i:nth-child(1),.cu-ibanner-sky i:nth-child(1){left:7%;top:16px;transform:rotate(-8deg)}
.cu-ibanner-planks i:nth-child(2),.cu-ibanner-sky i:nth-child(2){left:26%;bottom:12px;animation-delay:1.1s;transform:rotate(6deg) scale(.85)}
.cu-ibanner-planks i:nth-child(3),.cu-ibanner-sky i:nth-child(3){left:47%;top:8px;animation-delay:2.2s;transform:rotate(-4deg) scale(1.1)}
.cu-ibanner-planks i:nth-child(4),.cu-ibanner-sky i:nth-child(4){left:69%;bottom:16px;animation-delay:3.1s;transform:rotate(10deg)}
.cu-ibanner-planks i:nth-child(5),.cu-ibanner-sky i:nth-child(5){left:89%;top:22px;animation-delay:3.9s;transform:rotate(-12deg) scale(.9)}
@keyframes cu-plankfloat{from{margin-top:-3px;opacity:.5}to{margin-top:4px;opacity:.9}}
.cu-ibanner-in{position:relative}
.cu-ibanner-title{font-family:var(--font-head);font-weight:600;font-size:clamp(28px,3.4vw,42px);margin:12px 0 10px;color:var(--paper)}
.cu-ibanner-desc{color:#d6ded0;max-width:64ch;font-size:15px}

/* Duong dan */
.cu-crumb{padding:18px 0 0}
.cu-crumb-list{display:flex;align-items:center;gap:10px;flex-wrap:wrap;list-style:none;margin:0;padding:0;font-size:13.5px;color:#b9c6ae}
.cu-crumb-list li{display:flex;align-items:center;gap:10px}
.cu-crumb-list li+li::before{content:"\203A";color:var(--bamboo);font-size:14px;font-weight:700}
.cu-crumb-list a{color:var(--bamboo);font-weight:600}
.cu-crumb-list a:hover{text-decoration:underline}
.cu-crumb-list strong{color:var(--paper);font-weight:600}
.cu-crumb-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--tx-soft)}
.cu-crumb-line a{color:var(--amber-deep);font-weight:600}
.cu-crumb-line a:hover{text-decoration:underline}
.cu-crumb-sep{color:var(--moss-deep);font-size:10px}
.cu-crumb-now{font-weight:700;color:var(--dusk)}
.cu-ibanner .cu-crumb{padding:0}

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

/* Chuyen muc khac */
.cu-other{margin-top:56px}
.cu-block-h,.cu-other-title,.cu-rel-title{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--dusk);margin-bottom:22px}
.cu-other-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cu-other-list a{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid #ddd6c0;border-radius:8px;padding:16px 18px;transition:transform .25s,box-shadow .25s}
.cu-other-list a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.cu-other-body{display:flex;flex-direction:column;gap:4px;flex:1}
.cu-other-body strong{font-family:var(--font-head);font-weight:600;font-size:16px;color:var(--dusk)}
.cu-other-body span{font-size:13px;color:var(--tx-soft)}
.cu-other-go{color:var(--amber-deep);font-size:20px;font-weight:700}

/* Trang danh sach */
.cu-list-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start}
.cu-rows{display:flex;flex-direction:column;gap:18px}
.cu-lrow{background:#fff;border:1px solid #ddd6c0;border-radius:14px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.cu-lrow:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.cu-lrow-link{display:grid;grid-template-columns:230px 1fr 74px}
.cu-lrow-media img{width:100%;height:100%;object-fit:cover}
.cu-lrow-body{display:flex;flex-direction:column;gap:8px;padding:18px 20px}
.cu-lrow-meta i{font-style:normal;font-size:12px;font-weight:700;color:var(--moss-deep);letter-spacing:.1em;text-transform:uppercase}
.cu-lrow-title{font-family:var(--font-head);font-weight:600;font-size:18px;line-height:1.36;color:var(--dusk)}
.cu-lrow-desc{font-size:13.5px;color:var(--tx-soft)}
.cu-lrow-date{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:var(--dusk);color:var(--paper);padding:10px}
.cu-lrow-date b{font-family:var(--font-head);font-weight:600;font-size:26px;line-height:1;color:var(--bamboo)}
.cu-lrow-date i{font-style:normal;font-size:11px;letter-spacing:.08em;color:var(--paper)}
.cu-pagi{display:flex;gap:8px;margin-top:30px;flex-wrap:wrap}
.cu-pagi a,.cu-pagi button{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #ddd6c0;background:#fff;color:var(--tx);border-radius:999px;font-weight:700;font-size:14px;cursor:pointer;padding:0 12px;font-family:var(--font-body)}
.cu-pagi .is-cur{background:var(--amber);border-color:var(--amber);color:#fff}
.cu-pagi .is-dis{opacity:.45;pointer-events:none}
.cu-pagi a:hover:not(.is-cur){border-color:var(--amber);color:var(--amber-deep)}

/* Cot ben */
.cu-side{display:flex;flex-direction:column;gap:26px;position:sticky;top:96px}
.cu-side-box{background:#fff;border:1px solid #ddd6c0;border-radius:14px;padding:22px}
.cu-side-h{font-family:var(--font-head);font-weight:600;font-size:18px;color:var(--dusk);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--amber)}
.cu-side-hot{display:flex;flex-direction:column;gap:14px}
.cu-side-hot a{display:grid;grid-template-columns:76px 1fr;gap:12px;align-items:center}
.cu-side-hot img{width:76px;height:58px;object-fit:cover;border-radius:10px;border:2px solid var(--river)}
.cu-side-hot-body{display:flex;flex-direction:column;gap:3px}
.cu-side-hot-body strong{font-size:13.5px;font-weight:600;line-height:1.4;color:var(--dusk);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cu-side-hot-body time{font-size:11.5px;color:var(--tx-soft)}
.cu-side-more{display:inline-flex;gap:6px;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--amber-deep)}
.cu-side-list{display:flex;flex-direction:column;gap:12px}
.cu-side-list a{display:flex;gap:12px;align-items:baseline;font-size:13.5px;color:var(--dusk)}
.cu-side-list a:hover{color:var(--amber-deep)}
.cu-dot{width:24px;height:24px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:var(--paper);border:4px solid var(--amber);border-radius:50%;font-size:11px;font-weight:800;transform:translateY(4px)}
.cu-side-note{background:var(--dusk);border-color:var(--line)}
.cu-side-note .cu-side-h{color:var(--paper);border-color:var(--bamboo)}
.cu-side-note p{color:#d6ded0;font-size:13.5px;margin-bottom:16px}

/* Trang bai viet */
.cu-article-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start}
.cu-article-h1{font-family:var(--font-head);font-weight:600;font-size:clamp(26px,3vw,38px);line-height:1.32;color:var(--dusk);margin-bottom:18px}
.cu-article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--tx-soft);margin-bottom:24px}
.cu-meta-item b{color:var(--amber-deep)}
.cu-article-figure{margin-bottom:26px;border-radius:14px;overflow:hidden;border:1px solid #ddd6c0}
.cu-article-figure img{width:100%;height:auto}
.cu-article-body{font-size:16px;color:var(--tx)}
.cu-article-body p{margin-bottom:18px}
.cu-article-body h2{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--dusk);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--amber)}
.cu-article-body h3{font-family:var(--font-head);font-weight:600;font-size:19px;color:var(--dusk);margin:26px 0 12px}
.cu-article-body ul,.cu-article-body ol{margin:0 0 18px 22px;list-style:disc}
.cu-article-body ol{list-style:decimal}
.cu-article-body li{margin-bottom:8px}
.cu-article-body img{border-radius:12px;margin:20px 0}
.cu-article-body blockquote{border-left:4px solid var(--moss);background:var(--paper-2);padding:16px 20px;border-radius:0 12px 12px 0;margin:0 0 18px;color:var(--tx-soft);font-style:italic}
.cu-article-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px;padding-top:22px;border-top:1px solid #ddd6c0}
.cu-tag-label{font-size:13px;color:var(--tx-soft)}
.cu-tag{background:var(--paper-2);border:1px solid #ddd6c0;color:var(--tx);font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:999px;transition:all .25s}
.cu-tag:hover{background:var(--amber);border-color:var(--amber);color:#fff}
.cu-switcher{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:34px 0 44px}
.cu-switcher-cell{background:#fff;border:1px solid #ddd6c0;border-radius:8px;padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.cu-switcher-next{text-align:right}
.cu-switcher-label{font-size:12px;font-weight:700;color:var(--moss-deep);letter-spacing:.12em;text-transform:uppercase}
.cu-switcher-link{font-family:var(--font-head);font-weight:600;font-size:15px;color:var(--dusk)}
.cu-switcher-link:hover{color:var(--amber-deep)}
.cu-switcher-empty{font-size:13.5px;color:var(--tx-soft)}

/* Lien ket website */
.cu-flink{background:var(--paper-2);padding:56px 0}
.cu-flink-head{text-align:center;margin-bottom:30px}
.cu-flink-title{font-family:var(--font-head);font-weight:600;font-size:24px;color:var(--dusk);margin-bottom:8px}
.cu-flink-note{color:var(--tx-soft);font-size:14px}
.cu-flink-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cu-flink-chip{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #ddd6c0;border-radius:999px;padding:10px 20px 10px 10px;font-weight:600;font-size:14px;color:var(--dusk);transition:transform .25s,box-shadow .25s}
.cu-flink-chip:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.cu-flink-logo{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid var(--river)}

/* Chan trang */
.cu-footer{background:var(--dusk-2);color:var(--paper);padding-bottom:36px}
.cu-string{display:flex;justify-content:center;gap:14px;padding:20px 0 14px}
.cu-string i{display:block;width:24px;height:10px;background:repeating-linear-gradient(90deg,var(--bamboo) 0 5px,var(--bamboo-deep) 5px 9px);border-radius:3px;opacity:.8}
.cu-string i:nth-child(2n){opacity:.55;width:18px;height:8px}
.cu-string i:nth-child(3n){width:30px;height:12px;opacity:.95}
.cu-string-foot{margin-bottom:32px;border-bottom:1px solid rgba(247,242,230,.18);padding-bottom:24px}
.cu-foot-top{display:flex;align-items:center;gap:30px;flex-wrap:wrap;margin-bottom:44px}
.cu-fbrand{display:flex;align-items:center}
.cu-fbrand-img{height:56px;width:auto}
.cu-foot-slogan{color:#b9c6ae;font-size:14px;max-width:52ch}
.cu-foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(247,242,230,.18);margin-bottom:26px}
.cu-foot-h{font-family:var(--font-head);font-weight:600;font-size:17px;color:var(--paper);margin-bottom:16px}
.cu-foot-list{display:flex;flex-direction:column;gap:10px}
.cu-foot-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.cu-foot-list a{color:#d6ded0;font-size:14px;transition:color .25s,padding-left .25s}
.cu-foot-list a:hover{color:var(--paper);padding-left:4px}
.cu-foot-info{display:flex;flex-direction:column;gap:12px}
.cu-foot-info li{display:flex;flex-direction:column;gap:2px}
.cu-foot-key{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--bamboo);font-weight:700}
.cu-foot-val{font-size:14px;color:var(--paper)}
.cu-foot-copy{font-size:13px;color:#9aab90;margin-bottom:14px}
.cu-foot-meta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:#9aab90}
.cu-foot-sitemap{color:var(--bamboo)}
.cu-foot-sitemap:hover{text-decoration:underline}

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

/* Trang 404 */
.cu-404{padding:110px 0;background:
  radial-gradient(700px 340px at 50% 0%,rgba(123,168,160,.24),transparent 70%),
  var(--dusk);color:var(--paper)}
.cu-404-board{max-width:640px;margin:0 auto;text-align:center;padding:0 24px}
.cu-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(--bamboo);margin-bottom:16px}
.cu-404-kicker{color:var(--amber);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:13px;margin-bottom:12px}
.cu-404-title{font-family:var(--font-head);font-weight:600;font-size:32px;margin-bottom:14px;color:var(--paper)}
.cu-404-desc{color:#d6ded0;margin-bottom:30px}
.cu-404-acts{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

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

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

/* Dap ung man hinh */
@media(max-width:1100px){
  .cu-spans-grid,.cu-grid-4{grid-template-columns:repeat(2,1fr)}
  .cu-nav{display:none}
  .cu-burger{display:flex}
  .cu-hero-in{grid-template-columns:1fr;gap:44px}
  .cu-span-wrap{max-width:420px}
}
@media(max-width:900px){
  .cu-girder{grid-template-columns:1fr}
  .cu-list-wrap,.cu-article-wrap{grid-template-columns:1fr}
  .cu-side{position:static}
  .cu-about-wrap{grid-template-columns:1fr;gap:44px}
  .cu-foot-grid{grid-template-columns:1fr;gap:30px}
  .cu-other-list{grid-template-columns:1fr}
}
@media(max-width:640px){
  .cu-section{padding:60px 0}
  .cu-hero{padding:60px 0 90px}
  .cu-hero-stats{gap:22px;flex-wrap:wrap}
  .cu-spans-grid,.cu-grid-4{grid-template-columns:1fr}
  .cu-lrow-link{grid-template-columns:120px 1fr}
  .cu-lrow-date{display:none}
  .cu-switcher{grid-template-columns:1fr}
  .cu-switcher-next{text-align:left}
  .cu-faq-a{padding-left:24px}
  .cu-head-split{align-items:flex-start;flex-direction:column}
  .cu-foot-cats{grid-template-columns:1fr 1fr}
  .cu-rivertag{font-size:10px;padding:8px 12px;right:0}
  .cu-arch{left:2%;right:2%}
  .cu-span-wrap{padding:56px 10px 54px}
}