/* ==========================================================================
   KHÔNG GIAN SỐ BÁC HỒ VỚI THỚI AN — giao diện
   Bộ nhận diện: đỏ cờ – vàng sao – giấy dó. Ưu tiên thiết bị di động.
   Tệp này chỉ chứa CSS, không cần bước build.
   ========================================================================== */

/* ==================================================================
   BẢNG MÀU VÀ BIẾN DÙNG CHUNG
   ================================================================== */
:root{
  --red-900:#6E0A10;
  --red-800:#8C0F16;
  --red:#B3131B;
  --red-600:#C7272F;
  --red-050:#FBECEC;
  --gold:#C9A227;
  --gold-600:#A9861A;
  --gold-300:#E3C25A;
  --gold-100:#F6EBC8;
  --cream:#FBF6EA;
  --paper:#FFFDF8;
  --ink:#22201D;
  --ink-2:#3B3833;
  --muted:#6E675C;
  --line:#EADFC6;
  --line-2:#F1E9D8;
  --ok:#1E7A46;
  --bad:#B3131B;

  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(60,40,10,.06), 0 2px 8px rgba(60,40,10,.05);
  --shadow:0 2px 6px rgba(60,40,10,.06), 0 12px 28px -12px rgba(60,40,10,.18);
  --shadow-lg:0 24px 60px -24px rgba(60,40,10,.35);
  --maxw:760px;
  --tabbar-h:56px;
  --font-sans:'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif:'Merriweather', 'Times New Roman', Georgia, serif;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%; scroll-behavior:smooth}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(201,162,39,.10), transparent 42%),
    radial-gradient(circle at 88% 0%, rgba(179,19,27,.07), transparent 38%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(env(safe-area-inset-bottom) + 8px);
  overflow-x:hidden;
}

img{max-width:100%; display:block}
button{font:inherit; color:inherit}
a{color:var(--red); text-underline-offset:3px}

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:9999;
  background:var(--red); color:#fff; padding:10px 16px; border-radius:0 0 8px 0;
}
.skip-link:focus{left:0}

.demo-bar{
  display:flex; align-items:center; gap:10px;
  background:#FFF6D8; color:#6B5410; border-bottom:1px solid #EBDCA6;
  font-size:12.5px; line-height:1.45; padding:8px 14px;
}
.demo-bar[hidden]{display:none}
.demo-bar b{color:#5A470B}
.demo-bar__close{
  margin-left:auto; border:0; background:none; cursor:pointer;
  font-size:20px; line-height:1; color:#8A7020; padding:0 4px;
}

/* ==================================================================
   ĐẦU TRANG: nền cờ Đảng, huy hiệu búa liềm
   ================================================================== */
.site-header{
  position:relative; overflow:hidden; isolation:isolate;
  color:var(--gold-100);
  padding:calc(env(safe-area-inset-top) + 26px) 18px 26px;
  background:
    radial-gradient(120% 90% at 50% -20%, #D4242C 0%, var(--red) 38%, var(--red-800) 72%, var(--red-900) 100%);
  border-bottom:3px solid var(--gold);
  box-shadow:0 6px 24px -8px rgba(110,10,16,.55);
}
.site-header::after{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(115deg, transparent 34%, rgba(255,255,255,.10) 46%, transparent 58%);
  animation:shine 9s linear infinite;
}
@keyframes shine{
  0%{transform:translateX(-45%)}
  100%{transform:translateX(45%)}
}
.site-header__rays{
  position:absolute; inset:0; z-index:-1; opacity:.16; pointer-events:none;
  background:
    repeating-conic-gradient(from 0deg at 50% 118%,
      rgba(255,224,130,.85) 0deg 2.2deg,
      transparent 2.2deg 8.4deg);
  mask-image:radial-gradient(120% 100% at 50% 100%, #000 12%, transparent 72%);
  -webkit-mask-image:radial-gradient(120% 100% at 50% 100%, #000 12%, transparent 72%);
}
.site-header__star{
  position:absolute; top:-26px; right:-22px; width:150px; height:150px; z-index:-1;
  opacity:.13; color:var(--gold-300);
  background:currentColor;
  clip-path:polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}
.site-header__inner{max-width:var(--maxw); margin:0 auto; text-align:center; position:relative}

.site-header__flag{
  position:absolute; z-index:-1; pointer-events:none; user-select:none;
  right:-64px; left:auto; top:50%; transform:translateY(-50%);
  width:186px; height:auto; opacity:.24;
}
@media (min-width:820px){
  .site-header__inner{
    max-width:980px; display:grid; grid-template-columns:1fr auto;
    align-items:center; column-gap:34px; text-align:left;
  }
  .site-header__flag{
    position:static; transform:none; opacity:.92;
    grid-column:2; grid-row:1 / span 3; justify-self:end;
    width:190px; height:auto;
    filter:drop-shadow(0 8px 26px rgba(40,0,0,.45));
  }
  .site-header__eyebrow{grid-column:1; grid-row:1; margin-bottom:6px}
  .site-header__title{grid-column:1; grid-row:2}
  .site-header__slogan{grid-column:1; grid-row:3; margin-top:14px}
}
.site-header__eyebrow{
  margin:0 0 10px; font-size:11px; letter-spacing:.16em; text-transform:uppercase;
  color:rgba(255,241,201,.82); font-weight:500;
}
.site-header__title{
  margin:0; font-family:var(--font-serif); font-weight:900; line-height:1.18;
  font-size:clamp(23px,6.4vw,34px); letter-spacing:.4px;
  color:#FFF3CF; text-shadow:0 2px 12px rgba(60,0,0,.45);
}
.site-header__title span{color:var(--gold-300)}
.site-header__slogan{
  margin:12px 0 0; font-size:11.5px; letter-spacing:.05em; text-transform:uppercase;
  color:rgba(255,246,224,.9); font-weight:500; line-height:1.5;
}
.site-header__slogan::before,
.site-header__slogan::after{content:"—"; opacity:.55; margin:0 6px}
@media (max-width:400px){
  .site-header__slogan::before,
  .site-header__slogan::after{content:none}
  .site-header__slogan{font-size:10.5px; letter-spacing:.03em}
}

/* ==================================================================
   THANH MENU CHUYÊN MỤC
   ================================================================== */
.tabbar{
  position:sticky; top:0; z-index:70;
  display:flex; gap:2px; overflow-x:auto; overscroll-behavior-x:contain;
  background:rgba(255,253,248,.96);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 3px 14px -8px rgba(60,40,10,.4);
  padding:0 max(8px, env(safe-area-inset-left));
  scrollbar-width:none;
}
.tabbar::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto; position:relative;
  display:inline-flex; align-items:center; gap:9px;
  padding:10px 13px 11px; border:0; background:none; cursor:pointer;
  font-size:13.5px; font-weight:500; color:var(--muted); white-space:nowrap;
  transition:color .2s ease;
}
.tab__ico{
  width:29px; height:29px; border-radius:9px; flex:0 0 auto;
  display:grid; place-items:center;
  background:var(--cb, #F3EFE4); color:var(--c, var(--red));
  border:1px solid rgba(80,50,20,.06);
  transition:transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
}
.tab__ico svg{width:15px; height:15px; opacity:1}
.tab::after{
  content:""; position:absolute; left:10px; right:10px; bottom:0; height:3px;
  border-radius:3px 3px 0 0; background:currentColor;
  transform:scaleX(0); transform-origin:center; transition:transform .25s ease;
}
.tab:hover{color:var(--c)}
.tab:hover .tab__ico{transform:translateY(-1px)}
.tab[aria-current="page"]{color:var(--c); font-weight:700}
.tab[aria-current="page"] .tab__ico{
  background:linear-gradient(160deg, rgba(255,255,255,.28), rgba(255,255,255,0) 62%), var(--c);
  color:#fff; border-color:transparent;
  box-shadow:0 5px 14px -5px var(--c), inset 0 1px 0 rgba(255,255,255,.25);
}
.tab[aria-current="page"]::after{transform:scaleX(1)}

/* ==================================================================
   KHUNG NỘI DUNG CHÍNH
   ================================================================== */
.app{max-width:var(--maxw); margin:0 auto; padding:26px 16px 40px; outline:none}
.app:focus-visible{outline:2px solid var(--gold); outline-offset:6px}

.boot{display:grid; place-items:center; gap:14px; padding:64px 0; color:var(--muted)}
.boot__lotus{
  width:46px; height:46px; border-radius:50%;
  border:2px solid var(--gold-100); border-top-color:var(--red);
  animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.view{animation:rise .38s cubic-bezier(.22,.8,.3,1) both}
@keyframes rise{from{opacity:0; transform:translateY(10px)} to{opacity:1; transform:none}}

.section-head{text-align:center; margin:0 0 26px}
.section-head__eyebrow{
  display:block; font-size:11px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--gold-600); font-weight:600; margin-bottom:8px;
}
.section-head h2{
  margin:0; font-family:var(--font-serif); font-weight:900; color:var(--red-800);
  font-size:clamp(20px,5.6vw,26px); line-height:1.3;
}
.ornament{
  display:flex; align-items:center; justify-content:center; gap:10px;
  margin:12px auto 0; max-width:220px; color:var(--gold);
}
.ornament::before,.ornament::after{
  content:""; height:1px; flex:1;
  background:linear-gradient(90deg, transparent, var(--gold-300));
}
.ornament::after{background:linear-gradient(270deg, transparent, var(--gold-300))}
.ornament span{font-size:15px; line-height:1}

.lead{color:var(--ink-2); font-size:15px; text-align:center; margin:-8px auto 22px; max-width:56ch}
.section-head .lead{margin:14px auto 0}
.lead em{color:var(--red-800); font-style:normal; font-weight:600}

.card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow-sm); padding:20px;
}
.card + .card{margin-top:16px}

.hero{position:relative; margin-bottom:22px}
.hero__portrait{
  position:relative; border-radius:calc(var(--radius) + 4px); overflow:hidden;
  border:1px solid rgba(201,162,39,.5);
  box-shadow:var(--shadow); background:linear-gradient(180deg,#F4EAD2,#EADFC6);
  aspect-ratio:16/10;
}
.hero__portrait img{width:100%; height:100%; object-fit:cover; object-position:center 22%}
.hero__portrait::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(110,10,16,0) 45%, rgba(90,6,10,.72) 100%);
}
.hero__caption{
  position:absolute; left:0; right:0; bottom:0; padding:16px 18px; z-index:2; color:#FFF6E2;
}
.hero__caption b{display:block; font-family:var(--font-serif); font-size:15px; letter-spacing:.4px}
.hero__caption small{font-size:11.5px; opacity:.82; letter-spacing:.04em}

/* ==================================================================
   THẺ LỜI DẠY
   ================================================================== */
.quote{
  position:relative; background:var(--paper); border:1px solid var(--line);
  border-top:3px solid var(--red); border-radius:var(--radius);
  padding:26px 22px 22px; text-align:center; box-shadow:var(--shadow);
  margin-top:-18px; margin-inline:12px; z-index:3;
}
.quote__mark{font-family:var(--font-serif); font-size:46px; line-height:.6; color:var(--gold-300); display:block; margin-bottom:6px}
.quote__text{
  margin:0; font-family:var(--font-serif); font-style:italic; font-size:17px; line-height:1.78;
  color:var(--ink); min-height:3.4em; transition:opacity .35s ease;
}
.quote__text.is-swapping{opacity:0}
.quote__by{display:block; margin-top:14px; font-size:11.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--red-800)}
.quote__src{display:block; margin-top:2px; font-size:11px; color:var(--muted)}
.quote__next{
  margin-top:12px; border:1px dashed var(--line); background:none; cursor:pointer;
  color:var(--muted); font-size:12px; padding:5px 12px; border-radius:99px;
  transition:.2s;
}
.quote__next:hover{color:var(--red); border-color:var(--gold-300)}

.entries{display:grid; gap:12px; margin:26px 0 24px}
.entry{
  display:grid; grid-template-columns:44px 1fr 18px; align-items:center; gap:14px;
  text-align:left; width:100%; cursor:pointer;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px 16px; box-shadow:var(--shadow-sm);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  text-decoration:none; color:inherit;
}
.entry:hover{transform:translateY(-2px); box-shadow:var(--shadow); border-color:var(--gold-300)}
.entry:active{transform:translateY(0) scale(.995)}
.entry__icon{
  width:44px; height:44px; border-radius:13px; display:grid; place-items:center;
  background:linear-gradient(150deg, var(--cb, #FBEAEA) 0%, #fff 100%);
  color:var(--c, var(--red)); border:1px solid rgba(80,50,20,.07);
  box-shadow:0 4px 12px -6px rgba(90,60,20,.45), inset 0 1px 0 #fff;
  transition:transform .2s ease, box-shadow .2s ease;
}
.entry:hover .entry__icon{transform:translateY(-2px) scale(1.04); box-shadow:0 8px 18px -8px rgba(90,60,20,.5), inset 0 1px 0 #fff}
.entry__icon svg{width:21px; height:21px}
.entry__title{display:block; font-family:var(--font-serif); font-weight:700; color:var(--red-800); font-size:15.5px; line-height:1.35}
.entry__desc{display:block; font-size:12.5px; color:var(--muted); margin-top:3px; line-height:1.45}
.entry__arrow{color:var(--gold); font-size:18px; line-height:1}

.stats{display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin:8px 0 4px}
.stat{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:14px 8px; text-align:center; box-shadow:var(--shadow-sm);
}
.stat b{display:block; font-family:var(--font-serif); font-size:22px; color:var(--red-800); line-height:1.1}
.stat span{display:block; font-size:11px; color:var(--muted); margin-top:4px; line-height:1.3}

.chips{display:flex; gap:8px; overflow-x:auto; padding:4px 2px 10px; scrollbar-width:none; margin-bottom:6px;
  -webkit-mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%);
  mask-image:linear-gradient(90deg,#000 0,#000 92%,transparent 100%);
}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto; border:1px solid var(--line); background:var(--paper); color:var(--ink-2);
  padding:7px 14px; border-radius:99px; font-size:12.5px; cursor:pointer; white-space:nowrap;
  transition:.18s;
}
.chip:hover{border-color:var(--gold-300)}
.chip[aria-pressed="true"]{background:var(--red); border-color:var(--red); color:#fff; font-weight:600}

.search{position:relative; margin-bottom:14px}
.search svg{
  position:absolute; left:14px; top:50%; transform:translateY(-50%);
  width:16px; height:16px; color:var(--muted); pointer-events:none;
}
.search input{
  width:100%; padding:12px 14px 12px 40px; font:inherit; font-size:14px;
  border:1px solid var(--line); border-radius:99px; background:var(--paper); color:var(--ink);
  outline:none; transition:.2s;
}
.search input:focus{border-color:var(--gold); box-shadow:0 0 0 3px rgba(201,162,39,.14)}

.empty{
  text-align:center; color:var(--muted); font-size:13.5px;
  padding:26px 16px; border:1px dashed var(--line); border-radius:var(--radius); background:rgba(255,253,248,.6);
}
.empty b{display:block; color:var(--ink-2); margin-bottom:4px}

.tag{
  display:inline-block; font-size:11px; font-weight:600; letter-spacing:.03em;
  padding:3px 9px; border-radius:99px; background:var(--gold-100); color:var(--gold-600);
}
.tag--red{background:var(--red-050); color:var(--red)}
.tag--ok{background:#E6F4EC; color:var(--ok)}
.src{
  display:block; margin-top:10px; font-size:11px; color:var(--muted);
  border-top:1px dashed var(--line-2); padding-top:8px; line-height:1.5;
}
.src b{color:var(--gold-600); font-weight:600}

/* ==================================================================
   DÒNG THỜI GIAN CUỘC ĐỜI
   ================================================================== */
.timeline{position:relative; margin-top:6px; padding-left:26px}
.timeline::before{
  content:""; position:absolute; left:6px; top:6px; bottom:6px; width:2px;
  background:linear-gradient(180deg, var(--gold-300), var(--gold), var(--red));
  opacity:.6; border-radius:2px;
}
.tl-item{position:relative; margin-bottom:14px}
.tl-item::before{
  content:""; position:absolute; left:-26px; top:16px; width:12px; height:12px;
  border-radius:50%; background:var(--red); border:2.5px solid var(--paper);
  box-shadow:0 0 0 2px var(--gold-300);
}
.tl-card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:14px 16px; box-shadow:var(--shadow-sm);
}
.tl-year{
  font-family:var(--font-serif); font-weight:700; font-size:12.5px; letter-spacing:.06em;
  color:var(--gold-600); text-transform:uppercase;
}
.tl-name{font-weight:600; color:var(--red-800); font-size:15.5px; margin:2px 0 4px; font-family:var(--font-serif)}
.tl-desc{margin:0; font-size:13.5px; color:var(--ink-2); line-height:1.6}
.tl-item[hidden]{display:none}

/* ==================================================================
   5 BẢO VẬT QUỐC GIA
   ================================================================== */
.treasure{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow-sm); overflow:hidden; margin-bottom:14px;
}
.treasure__head{
  display:grid; grid-template-columns:42px 1fr 24px; gap:12px; align-items:center;
  width:100%; text-align:left; cursor:pointer; border:0; background:none;
  padding:16px; border-bottom:1px solid transparent; transition:.2s;
}
.treasure__head:hover{background:#FEF9EC}
.treasure__no{
  width:42px; height:42px; border-radius:50%; display:grid; place-items:center;
  background:linear-gradient(150deg, var(--gold-300), var(--gold-600));
  color:#FFFDF6; font-family:var(--font-serif); font-weight:700; font-size:16px;
  box-shadow:0 3px 10px -3px rgba(169,134,26,.7);
}
.treasure__title{margin:0; font-family:var(--font-serif); font-size:15.5px; color:var(--red-800); line-height:1.35}
.treasure__meta{display:block; font-size:11.5px; color:var(--muted); margin-top:3px}
.treasure__chev{color:var(--gold-600); transition:transform .25s ease}
.treasure__head[aria-expanded="true"] .treasure__chev{transform:rotate(180deg)}
.treasure__body{padding:0 16px 18px; display:none}
.treasure__body > p:first-child{margin-top:4px}
.treasure__body.is-open{display:block; animation:rise .3s ease both}
.treasure__body p{margin:0 0 10px; font-size:13.8px; line-height:1.7; color:var(--ink-2); text-align:justify}
.treasure__body h4{
  margin:14px 0 5px; font-size:12px; letter-spacing:.07em; text-transform:uppercase;
  color:var(--gold-600); font-weight:700;
}
.treasure__body audio{width:100%; margin-top:12px; height:38px}
.audio-note{font-size:11px; color:var(--muted); margin-top:6px; display:block}

/* ==================================================================
   GƯƠNG ĐIỂN HÌNH
   ================================================================== */
.honor{
  position:relative; display:grid; grid-template-columns:64px 1fr; gap:14px;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; box-shadow:var(--shadow-sm); margin-bottom:14px; overflow:hidden;
}
.honor::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    linear-gradient(135deg, rgba(201,162,39,.10), transparent 30%),
    linear-gradient(315deg, rgba(179,19,27,.07), transparent 28%);
}
.honor__avatar{
  width:64px; height:64px; border-radius:50%; object-fit:cover;
  border:3px solid var(--paper); box-shadow:0 0 0 2px var(--gold-300), var(--shadow-sm);
  background:#F1E9D8;
}
.honor__body{position:relative; min-width:0}
.honor__name{margin:0 0 2px; font-family:var(--font-serif); font-size:15.5px; color:var(--red-800)}
.honor__unit{margin:0; font-size:12px; color:var(--muted)}
.honor__text{margin:8px 0 0; font-size:13.5px; line-height:1.62; color:var(--ink-2)}
.honor__badges{display:flex; flex-wrap:wrap; gap:6px; margin-top:10px}

/* ==================================================================
   QUIZ VÀ TRÒ CHƠI
   ================================================================== */
.quiz{background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden}
.quiz__top{padding:16px 18px 0}
.quiz__bar{height:6px; border-radius:99px; background:var(--line-2); overflow:hidden}
.quiz__bar i{display:block; height:100%; width:0; border-radius:99px; background:linear-gradient(90deg, var(--gold-300), var(--red)); transition:width .35s ease}
.quiz__count{display:flex; justify-content:space-between; font-size:11.5px; color:var(--muted); margin-top:8px; letter-spacing:.03em}
.quiz__body{padding:16px 18px 20px}
.quiz__q{margin:6px 0 16px; font-family:var(--font-serif); font-size:16px; font-weight:700; line-height:1.55; color:var(--ink)}
.opt{
  display:grid; grid-template-columns:24px 1fr; gap:10px; align-items:start; width:100%;
  text-align:left; background:#FFFDF8; border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:12px 14px; margin-bottom:9px; cursor:pointer; font-size:14px; line-height:1.5;
  transition:.16s;
}
.opt:hover:not(:disabled){border-color:var(--gold-300); background:#FFFBF0}
.opt:disabled{cursor:default}
.opt__k{
  width:22px; height:22px; border-radius:50%; display:grid; place-items:center;
  background:var(--gold-100); color:var(--gold-600); font-size:11.5px; font-weight:700; margin-top:1px;
}
.opt.is-right{border-color:var(--ok); background:#EFF8F2}
.opt.is-right .opt__k{background:var(--ok); color:#fff}
.opt.is-wrong{border-color:var(--bad); background:#FCEDED}
.opt.is-wrong .opt__k{background:var(--bad); color:#fff}
.quiz__explain{
  margin-top:14px; padding:12px 14px; border-radius:var(--radius-sm);
  background:#FDF7E6; border-left:3px solid var(--gold); font-size:13px; line-height:1.6; color:var(--ink-2);
}
.quiz__explain b{color:var(--red-800)}
.quiz__foot{display:flex; gap:10px; align-items:center; justify-content:space-between; margin-top:16px}
.quiz__result{text-align:center; padding:26px 20px}
.quiz__score{font-family:var(--font-serif); font-size:46px; font-weight:900; color:var(--red-800); line-height:1}
.quiz__score small{font-size:16px; color:var(--muted); font-weight:400}
.quiz__rank{margin:10px 0 4px; font-weight:600; color:var(--gold-600); letter-spacing:.04em}
.quiz__ranknote{font-size:13px; color:var(--muted); margin:0 0 18px}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:11px 20px; border-radius:99px; border:1px solid transparent;
  font-size:14px; font-weight:600; cursor:pointer; transition:.18s; text-decoration:none;
}
.btn--primary{background:var(--red); color:#fff; box-shadow:0 6px 18px -8px rgba(179,19,27,.8)}
.btn--primary:hover{background:var(--red-800)}
.btn--ghost{background:var(--paper); border-color:var(--line); color:var(--ink-2)}
.btn--ghost:hover{border-color:var(--gold-300); color:var(--red-800)}
.btn--gold{background:linear-gradient(135deg, var(--gold-300), var(--gold-600)); color:#4A3A05}
.btn[disabled]{opacity:.5; cursor:not-allowed}

.match{background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-sm); padding:18px}
.match__cols{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:14px}
.match__col{display:grid; gap:8px; align-content:start}
.tile{
  padding:10px 10px; border-radius:var(--radius-sm); border:1px solid var(--line);
  background:#FFFDF8; font-size:13px; cursor:pointer; text-align:center; line-height:1.3;
  transition:.16s; min-height:44px; display:grid; place-items:center;
}
.tile:hover:not(.is-done){border-color:var(--gold-300); background:#FFFBF0}
.tile[aria-pressed="true"]{border-color:var(--red); background:var(--red-050); color:var(--red-800); font-weight:600}
.tile.is-done{border-color:var(--ok); background:#EFF8F2; color:var(--ok); cursor:default; opacity:.85}
.tile.is-bad{animation:shake .4s}
@keyframes shake{
  0%,100%{transform:translateX(0)} 20%{transform:translateX(-5px)}
  40%{transform:translateX(5px)} 60%{transform:translateX(-3px)} 80%{transform:translateX(3px)}
}
.match__status{margin-top:14px; font-size:13px; color:var(--muted); text-align:center}

/* ==================================================================
   THƯ VIỆN TƯ LIỆU
   ================================================================== */
.lib-item{
  display:grid; grid-template-columns:1fr auto; gap:10px; align-items:center;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:13px 15px; margin-bottom:9px; transition:.16s; text-decoration:none; color:inherit;
}
.lib-item:hover{border-color:var(--gold-300); box-shadow:var(--shadow-sm)}
.lib-item__t{margin:0; font-size:14px; font-weight:600; color:var(--red-800); line-height:1.4}
.lib-item__d{margin:3px 0 0; font-size:12px; color:var(--muted); line-height:1.45}
.lib-item__go{color:var(--gold-600); font-size:15px}

.place{
  display:grid; grid-template-columns:1fr auto; gap:12px; align-items:center;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:14px 16px; margin-bottom:10px;
}
.place h3{margin:0 0 3px; font-size:14.5px; color:var(--red-800); font-family:var(--font-serif)}
.place p{margin:0; font-size:12.5px; color:var(--muted); line-height:1.5}
.place a{
  flex:0 0 auto; font-size:12px; font-weight:600; padding:8px 14px; border-radius:99px;
  border:1px solid var(--line); color:var(--red); text-decoration:none; white-space:nowrap;
}
.place a:hover{border-color:var(--gold-300); background:#FFFBF0}

.album{display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-top:6px}
.album figure{margin:0; border-radius:10px; overflow:hidden; aspect-ratio:1; background:#EDE4CE; position:relative}
.album img{width:100%; height:100%; object-fit:cover; transition:transform .4s ease}
.album figure:hover img{transform:scale(1.06)}

.pillar{background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-sm); overflow:hidden; margin-bottom:14px}
.pillar__head{
  display:grid; grid-template-columns:40px 1fr 22px; gap:12px; align-items:center;
  padding:16px; cursor:pointer; border:0; background:none; width:100%; text-align:left;
}
.pillar__head:hover{background:#FEF9EC}
.pillar__no{
  width:40px; height:40px; border-radius:12px; display:grid; place-items:center;
  background:var(--red-050); color:var(--red); font-family:var(--font-serif); font-weight:700;
  border:1px solid #F3D9D9;
}
.pillar__t{margin:0; font-family:var(--font-serif); font-size:15px; color:var(--red-800)}
.pillar__s{display:block; font-size:11.5px; color:var(--muted); margin-top:2px}
.pillar__body{padding:0 16px 18px; display:none}
.pillar__body.is-open{display:block; animation:rise .3s ease both}
.pillar__body p{margin:0 0 10px; font-size:13.8px; line-height:1.7; color:var(--ink-2); text-align:justify}
.story{
  background:#FDF7E6; border-left:3px solid var(--gold); border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:12px 14px; margin-top:10px;
}
.story h4{margin:0 0 5px; font-size:11.5px; letter-spacing:.07em; text-transform:uppercase; color:var(--gold-600)}
.story p{margin:0; font-size:13.3px; line-height:1.65; color:var(--ink-2); font-style:italic}

.modal{
  position:fixed; inset:0; z-index:200; display:grid; place-items:center; padding:20px;
  background:rgba(34,20,8,.62); -webkit-backdrop-filter:blur(4px); backdrop-filter:blur(4px);
  animation:fade .25s ease both;
}
.modal[hidden]{display:none}
@keyframes fade{from{opacity:0} to{opacity:1}}
.modal__card{
  background:var(--paper); border:1px solid var(--gold-300); border-radius:18px;
  padding:26px 22px 22px; text-align:center; max-width:330px; width:100%;
  box-shadow:var(--shadow-lg); animation:pop .28s cubic-bezier(.22,.9,.3,1.2) both;
}
@keyframes pop{from{transform:scale(.94); opacity:0} to{transform:none; opacity:1}}
.modal__title{margin:0 0 6px; font-family:var(--font-serif); font-size:18px; color:var(--red-800)}
.modal__sub{margin:0; font-size:12.5px; color:var(--muted)}
.modal__qr{
  margin:16px auto 10px; padding:10px; background:#fff; border-radius:12px;
  border:1px solid var(--line); width:fit-content; line-height:0;
}
.modal__qr img{width:220px; height:220px; border-radius:6px}
.modal__url{
  font-size:11px; color:var(--muted); word-break:break-all; margin:0 0 16px;
  font-family:ui-monospace, SFMono-Regular, Menlo, monospace;
}
.modal__actions{display:flex; gap:8px; justify-content:center}
.modal__actions .btn{flex:1; padding:10px 12px; font-size:13px}

.fab{
  position:fixed; right:16px; bottom:calc(env(safe-area-inset-bottom) + 18px); z-index:90;
  width:52px; height:52px; border-radius:50%; border:2px solid #fff; cursor:pointer;
  display:grid; place-items:center; color:#4A3A05;
  background:linear-gradient(140deg, var(--gold-300), var(--gold-600));
  box-shadow:0 10px 24px -8px rgba(169,134,26,.9), 0 2px 8px rgba(60,40,10,.2);
  transition:transform .18s ease;
}
.fab:hover{transform:scale(1.05)}
.fab:active{transform:scale(.94)}

.site-footer{
  border-top:3px solid var(--gold); margin-top:10px;
  background:linear-gradient(180deg, var(--red-800), var(--red-900));
  color:rgba(255,244,214,.82); text-align:center; padding:30px 18px calc(env(safe-area-inset-bottom) + 26px);
}
.site-footer__mark{color:var(--gold-300); font-size:17px; margin-bottom:8px}
.site-footer__org{margin:0; color:#FFF3CF; font-family:var(--font-serif); font-size:14.5px; letter-spacing:.4px}
.site-footer__line{margin:3px 0 12px; font-size:12px; opacity:.82}
.site-footer__meta{
  margin:0; font-size:11.5px; display:flex; flex-wrap:wrap; gap:8px; justify-content:center; align-items:center;
}
.site-footer__meta a{color:var(--gold-300); text-decoration:none}
.site-footer__meta a:hover{text-decoration:underline}
.site-footer__meta .dot{opacity:.4}
.linklike{background:none; border:0; padding:0; color:var(--gold-300); cursor:pointer; font-size:11.5px; text-decoration:underline; text-underline-offset:3px}
.site-footer__note{margin:14px 0 0; font-size:10.5px; opacity:.55; letter-spacing:.02em}

.noscript{
  position:fixed; inset:auto 0 0 0; background:var(--red-800); color:#fff;
  padding:14px; text-align:center; font-size:13px; z-index:300;
}

@media (min-width:640px){
  .entries{grid-template-columns:repeat(3,1fr); gap:14px}
  .entry{grid-template-columns:1fr; text-align:center; padding:20px 16px; gap:10px}
  .entry__icon{margin:0 auto; width:48px; height:48px}
  .entry__arrow{display:none}
  .album{grid-template-columns:repeat(4,1fr)}
  .app{padding:34px 22px 48px}
}

@media (min-width:820px){
  .tabbar{justify-content:center}
  .tab{padding:15px 18px 14px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* ==================================================================
   KHUNG ẢNH TƯ LIỆU TỰ ĐỔI (trang chủ)
   ================================================================== */
.photo-stage{
  position:relative; border-radius:calc(var(--radius) + 6px); overflow:hidden;
  border:1px solid rgba(201,162,39,.55); box-shadow:var(--shadow-lg);
  background:#2A1410;
}
.photo-stage__frame{position:relative; aspect-ratio:4/3}

.photo-slide{position:absolute; inset:0; opacity:0; transition:opacity 1s ease; will-change:opacity}
.photo-slide.is-active{opacity:1}

.photo-slide__bg{
  position:absolute; inset:-8%; width:116%; height:116%; object-fit:cover;
  filter:blur(34px) saturate(150%) brightness(.85);
  transform:scale(1.05); z-index:0;
}
.photo-slide::after{
  content:""; position:absolute; inset:0; z-index:1; pointer-events:none;
  background:linear-gradient(180deg, rgba(58,14,11,.55) 0%, rgba(26,8,6,.8) 100%);
}
.photo-slide__fg{
  position:absolute; inset:0; width:100%; height:100%; object-fit:contain; z-index:2;
  filter:drop-shadow(0 12px 34px rgba(0,0,0,.55));
  transform-origin:center;
}
.photo-slide__fg.is-cover{object-fit:cover}
.photo-slide.is-active .photo-slide__fg{animation:kenburns 9s ease-out forwards}
@keyframes kenburns{
  from{transform:scale(1.035)}
  to{transform:scale(1)}
}

.photo-stage__caption{
  position:absolute; left:0; right:0; bottom:0; z-index:2; pointer-events:none;
  padding:52px 16px 14px; color:#FFF3D9;
  background:linear-gradient(180deg, rgba(30,8,6,0) 0%, rgba(30,8,6,.55) 45%, rgba(30,8,6,.88) 100%);
  display:flex; flex-wrap:wrap; align-items:baseline; gap:8px;
}
.photo-stage__year{
  font-family:var(--font-serif); font-weight:700; font-size:13px; color:var(--gold-300);
  letter-spacing:.04em; flex:0 0 auto;
}
.photo-stage__text{font-size:12.5px; line-height:1.45; text-shadow:0 1px 4px rgba(0,0,0,.6)}
.photo-stage__caption.is-swapping{opacity:0; transition:opacity .28s ease}

.photo-stage__dots{
  position:absolute; top:12px; right:12px; z-index:3;
  display:flex; gap:6px; padding:7px 9px; border-radius:99px;
  background:rgba(30,8,6,.42); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}
.photo-stage__dot{
  width:7px; height:7px; padding:0; border-radius:50%; border:0; cursor:pointer;
  background:rgba(255,243,217,.42); transition:.25s;
}
.photo-stage__dot[aria-current="true"]{background:var(--gold-300); width:18px; border-radius:99px}

.photo-stage__badge{
  position:absolute; top:12px; left:12px; z-index:3;
  font-size:10px; letter-spacing:.14em; text-transform:uppercase; font-weight:600;
  color:#FFF0C8; background:rgba(30,8,6,.42); border:1px solid rgba(227,194,90,.35);
  padding:5px 10px; border-radius:99px;
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}

.album-section{margin-top:6px}
.photo-stage + .quote{margin-top:20px}
.album-head{
  display:flex; align-items:baseline; justify-content:space-between; gap:10px;
  margin:34px 0 12px;
}
.album-head h2{
  margin:0; font-family:var(--font-serif); font-size:17px; color:var(--red-800);
}
.album-head h2 small{
  display:block; font-family:var(--font-sans); font-size:11px; font-weight:400;
  color:var(--muted); letter-spacing:.02em; margin-top:3px;
}
.album-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:8px}
@media (min-width:640px){ .album-grid{grid-template-columns:repeat(5,1fr); gap:10px} }

.album-item{
  position:relative; display:block; width:100%; border:0; padding:0; cursor:pointer;
  aspect-ratio:1; border-radius:10px; overflow:hidden; background:#E9DFC8;
  box-shadow:var(--shadow-sm); transition:transform .2s ease, box-shadow .2s ease;
}
.album-item:hover{transform:translateY(-2px); box-shadow:var(--shadow)}
.album-item img{width:100%; height:100%; object-fit:cover; transition:transform .45s ease}
.album-item:hover img{transform:scale(1.07)}
.album-item span{
  position:absolute; left:0; right:0; bottom:0; padding:14px 7px 5px;
  font-size:9.5px; letter-spacing:.02em; color:#FFEFD2; text-align:left;
  background:linear-gradient(180deg, transparent, rgba(30,8,6,.78));
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.album-credit{
  margin:12px 0 0; font-size:10.5px; color:var(--muted); line-height:1.5;
}
.album-credit a{color:var(--gold-600)}

.lightbox{
  position:fixed; inset:0; z-index:300; display:grid; place-items:center; padding:20px 16px;
  background:rgba(16,6,5,.94); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  animation:fade .2s ease both;
}
.lightbox[hidden]{display:none}
.lightbox__inner{margin:0; display:grid; justify-items:center; max-width:min(720px,100%)}
.lightbox__inner img{
  max-width:100%; max-height:72vh; border-radius:10px; object-fit:contain;
  box-shadow:0 30px 80px -20px rgba(0,0,0,.9);
}
.lightbox__cap{
  margin-top:14px; text-align:center; color:#FFF3D9; font-size:13px; line-height:1.5; max-width:56ch;
}
.lightbox__credit{display:block; margin-top:6px; font-size:10.5px; color:rgba(255,243,217,.5)}
.lightbox__close{
  position:absolute; top:calc(env(safe-area-inset-top) + 12px); right:14px;
  width:40px; height:40px; border-radius:50%; border:1px solid rgba(255,243,217,.25);
  background:rgba(255,255,255,.08); color:#FFF3D9; font-size:22px; line-height:1; cursor:pointer;
}

.home-note{text-align:center; margin:22px 0 0}
.tag--gold{background:#F7EFD6; color:var(--gold-600)}
.note{
  font-size:12px; color:var(--muted); line-height:1.6; background:#FBF6E9;
  border:1px dashed var(--line); border-radius:var(--radius-sm); padding:10px 13px; margin:0 0 14px;
}
.sub-head{
  margin:32px 0 4px; font-family:var(--font-serif); font-size:16px; color:var(--red-800); text-align:center;
}
.bullets{list-style:none; margin:12px 0 0; padding:0; display:grid; gap:7px}
.bullets li{display:grid; grid-template-columns:18px 1fr; gap:8px; align-items:start; font-size:13.5px; color:var(--ink-2); line-height:1.55}
.bullets li svg{color:var(--gold-600); margin-top:3px; width:14px; height:14px}

.inline-link{
  display:inline-flex; align-items:center; gap:6px; margin-top:12px;
  font-size:12.5px; font-weight:600; color:var(--red); text-decoration:none;
  border-bottom:1px solid rgba(179,19,27,.3); padding-bottom:1px;
}
.inline-link:hover{color:var(--red-800); border-bottom-color:var(--red)}

.audio-player{width:100%; height:38px; margin-top:12px}

.honor__avatar--text{
  display:grid; place-items:center; color:var(--gold-600);
  background:linear-gradient(150deg,#FBF0D0,#EFE1BC);
}
.honor__avatar--text svg{width:28px; height:28px}

.video-wrap{
  position:relative; width:100%; aspect-ratio:16/9; border-radius:var(--radius);
  overflow:hidden; border:1px solid var(--line); box-shadow:var(--shadow);
  background:#1A0F0C; margin:6px 0 18px;
}
.video-wrap iframe{position:absolute; inset:0; width:100%; height:100%; border:0}

.model{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:18px; box-shadow:var(--shadow-sm); margin-bottom:14px;
}
.model h3{margin:0 0 4px; font-family:var(--font-serif); font-size:15.5px; color:var(--red-800); line-height:1.4}
.model__unit{display:flex; align-items:center; gap:6px; margin:0 0 8px; font-size:12px; color:var(--muted)}
.model__unit svg{color:var(--gold); width:13px; height:13px}
.model p{margin:0 0 8px; font-size:13.5px; line-height:1.68; color:var(--ink-2); text-align:justify}
.model__result{
  margin-top:10px; background:#F2F8F3; border-left:3px solid var(--ok);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0; padding:10px 12px;
  font-size:13px; line-height:1.6; color:#1D5E39;
}
.signup-box{
  margin-top:20px; background:#FBF6E9; border:1px dashed var(--line);
  border-radius:var(--radius); padding:16px 18px; text-align:center;
}
.signup-box b{display:block; color:var(--red-800); font-family:var(--font-serif); margin-bottom:4px}
.signup-box p{margin:0; font-size:12.5px; color:var(--muted); line-height:1.55}
.signup-box code{background:#fff; border:1px solid var(--line); border-radius:4px; padding:1px 5px; font-size:11.5px}
.cta-full{width:100%; margin-top:20px}

.callout{
  margin-top:18px; background:#FDF7E6; border:1px solid var(--gold-100);
  border-radius:var(--radius-sm); padding:13px 15px; font-size:12.8px; line-height:1.6; color:var(--ink-2);
}
.callout b{color:var(--gold-600)}
.notice-file{
  max-width:var(--maxw); margin:18px auto 0; font-size:12.8px;
  background:#FFF1F1; border-color:#F0C9C9; color:#7A2020;
}
.notice-file b{color:var(--red-800)}
.notice-file code{background:#fff; padding:1px 5px; border-radius:4px; border:1px solid #EFD6D6}

.place__addr{display:flex; align-items:center; gap:5px; margin-top:5px !important; font-size:11.5px; color:var(--muted)}
.place__addr svg{width:12px; height:12px; color:var(--gold); flex:0 0 auto}

/* ==================================================================
   IN ẤN
   ================================================================== */
@media print{
  .tabbar,.fab,.site-header__rays,.site-header__star,.modal,.demo-bar{display:none !important}
  body{background:#fff}
  .site-header{background:#fff; color:#000; border-bottom:2px solid #000}
  .site-header__title{color:#000; text-shadow:none}
}

@media (min-width:820px){
  .site-header__slogan::before,
  .site-header__slogan::after{content:none; margin:0}
}

/* ==================================================================
   BỐ CỤC BA CỘT CHO MÀN HÌNH RỘNG
   ================================================================== */
.shell{display:block}
.rail{display:none}

@media (min-width:1120px){
  .shell{
    display:grid; grid-template-columns:196px minmax(0,1fr) 196px;
    gap:24px; max-width:1200px; margin:0 auto; padding:0 24px; align-items:start;
  }
  .app{max-width:none; margin:0; padding:34px 0 56px}
  .rail{display:block; position:sticky; top:78px; padding-top:34px}
}

/* ==================================================================
   HAI CỘT HAI BÊN
   ================================================================== */
.rail-card{
  background:var(--paper); border:1px solid var(--line); border-radius:14px;
  padding:12px; box-shadow:var(--shadow-sm); margin-bottom:14px;
}
.rail-card h3{
  margin:0 0 10px; font-family:var(--font-serif); font-size:12px; letter-spacing:.06em;
  text-transform:uppercase; color:var(--gold-600);
}
.rail-card h3::after{content:""; display:block; height:1px; margin-top:7px; background:linear-gradient(90deg, var(--gold-300), transparent)}

.rail-photo{position:relative; aspect-ratio:4/5; border-radius:10px; overflow:hidden; background:#E9DFC8}
.rail-photo img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity 1.2s ease}
.rail-photo img.is-active{opacity:1}
.rail-cap{margin:9px 0 0; font-size:11px; line-height:1.45; color:var(--muted); min-height:3em}
.rail-cap b{display:block; font-family:var(--font-serif); font-size:12px; color:var(--red-800); margin-bottom:2px}

.rail-stat{display:flex; align-items:baseline; justify-content:space-between; gap:6px; padding:7px 0; border-bottom:1px dashed var(--line-2); font-size:11.5px; color:var(--muted)}
.rail-stat:last-child{border-bottom:0}
.rail-stat b{font-family:var(--font-serif); font-size:15px; color:var(--red-800)}

.rail-btn{
  display:flex; align-items:center; justify-content:center; gap:7px; width:100%;
  padding:9px 10px; margin-top:8px; border-radius:99px; border:1px solid var(--line);
  background:#FFFDF8; color:var(--ink-2); font-size:12px; font-weight:600; cursor:pointer;
  text-decoration:none; transition:.16s;
}
.rail-btn:hover{border-color:var(--gold-300); color:var(--red-800); background:#FFFBF0}
.rail-btn svg{width:14px; height:14px}

.rail-note{font-size:10.5px; color:var(--muted); line-height:1.5; margin:8px 0 0; text-align:center}

/* ==================================================================
   KHUNG THÔNG TIN ẢNH KHI RÊ CHUỘT
   ================================================================== */
.photo-tip{
  position:fixed; z-index:260; width:268px; max-width:calc(100vw - 24px);
  background:var(--paper); border:1px solid var(--gold-300); border-radius:12px;
  box-shadow:var(--shadow-lg); padding:12px 14px; pointer-events:none;
  opacity:0; transition:opacity .16s ease; left:0; top:0;
}
.photo-tip.is-visible{opacity:1}
.photo-tip__year{
  display:inline-block; font-family:var(--font-serif); font-size:11px; font-weight:700;
  color:var(--gold-600); letter-spacing:.05em; margin-bottom:4px;
}
.photo-tip__title{display:block; font-family:var(--font-serif); font-size:13.5px; color:var(--red-800); line-height:1.35; margin-bottom:6px}
.photo-tip__desc{margin:0; font-size:11.8px; line-height:1.55; color:var(--ink-2)}
.photo-tip__src{display:block; margin-top:8px; padding-top:7px; border-top:1px dashed var(--line-2); font-size:10px; color:var(--muted)}

.tl-card{display:block; width:100%; text-align:left; cursor:pointer; font:inherit; color:inherit; transition:border-color .18s, box-shadow .18s}
.tl-card:hover{border-color:var(--gold-300)}
.tl-card[aria-expanded="true"]{border-color:var(--gold); box-shadow:0 0 0 2px rgba(201,162,39,.14), var(--shadow-sm)}
.tl-more{
  display:inline-flex; align-items:center; gap:5px; margin-top:9px;
  font-size:11px; font-weight:600; color:var(--gold-600); letter-spacing:.02em;
}
.tl-more svg{width:13px; height:13px; transition:transform .22s ease}
.tl-card[aria-expanded="true"] .tl-more svg{transform:rotate(180deg)}
/* ==================================================================
   CHI TIẾT MỞ RỘNG CỦA TỪNG MỐC
   ================================================================== */
.tl-detail{
  margin:8px 0 0 0; padding:12px 14px; border-radius:0 0 var(--radius-sm) var(--radius-sm);
  background:#FBF5E6; border-left:3px solid var(--gold); font-size:13px; line-height:1.68;
  color:var(--ink-2); animation:rise .28s ease both;
}
.tl-detail p{margin:0}
.tl-detail[hidden]{display:none}

body[data-view="trinh-chieu"]{overflow:hidden}
body[data-view="trinh-chieu"] .site-header,
body[data-view="trinh-chieu"] .tabbar,
body[data-view="trinh-chieu"] .site-footer,
body[data-view="trinh-chieu"] .fab,
body[data-view="trinh-chieu"] .demo-bar{display:none}

/* ==================================================================
   CHẾ ĐỘ TRÌNH CHIẾU TOÀN MÀN HÌNH
   ================================================================== */
.kiosk{
  position:fixed; inset:0; z-index:400; background:#0F0605; color:#FFF3D9;
  display:grid; place-items:center; overflow:hidden;
}
.kiosk__bg{
  position:absolute; inset:-6%; background-size:cover; background-position:center;
  filter:blur(38px) saturate(130%) brightness(.42); transform:scale(1.08);
  transition:background-image .6s;
}
.kiosk__inner{
  position:relative; z-index:2; display:grid; grid-template-columns:1fr; gap:26px;
  width:min(1200px, 92vw); align-items:center;
}
@media (min-width:900px){ .kiosk__inner{grid-template-columns:1.15fr .85fr; gap:44px} }

.kiosk__photo{
  position:relative; aspect-ratio:4/3; border-radius:14px; overflow:hidden;
  border:1px solid rgba(227,194,90,.4); box-shadow:0 40px 90px -30px #000;
}
.kiosk__photo img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity 1.2s ease}
.kiosk__photo img.is-active{opacity:1}
.kiosk__cap{
  position:absolute; left:0; right:0; bottom:0; padding:40px 18px 14px; font-size:13px;
  background:linear-gradient(180deg, transparent, rgba(20,6,5,.88));
}

.kiosk__side{text-align:center}
.kiosk__eyebrow{font-size:11px; letter-spacing:.2em; text-transform:uppercase; color:var(--gold-300); margin:0 0 10px}
.kiosk__quote{
  font-family:var(--font-serif); font-style:italic; font-size:clamp(18px, 2.4vw, 26px);
  line-height:1.6; margin:0 0 12px; min-height:4.6em; transition:opacity .35s ease;
}
.kiosk__source{font-size:11.5px; color:rgba(255,243,217,.6); letter-spacing:.03em}
.kiosk__qr{margin:22px auto 0; width:132px; padding:8px; background:#fff; border-radius:10px; line-height:0}
.kiosk__qr img{width:100%; height:auto}
.kiosk__hint{margin:12px 0 0; font-size:11px; color:rgba(255,243,217,.55)}
.kiosk__clock{position:absolute; right:22px; bottom:18px; font-size:12px; color:rgba(255,243,217,.45); letter-spacing:.06em; z-index:3}
.kiosk__exit{
  position:absolute; left:18px; bottom:16px; z-index:3; background:none; border:1px solid rgba(255,243,217,.25);
  color:rgba(255,243,217,.7); border-radius:99px; padding:7px 14px; font-size:11.5px; cursor:pointer;
}
.kiosk__exit:hover{color:#FFF3D9; border-color:var(--gold-300)}

body[data-view="trinh-chieu"] .shell{display:block; padding:0; max-width:none}
body[data-view="trinh-chieu"] .rail{display:none}
body[data-view="trinh-chieu"] .app{padding:0; max-width:none}

.view--static{animation:none !important; transform:none !important}

@media (min-width:820px) and (max-width:1119px){
  .app{max-width:880px}
}

.photo-stage{cursor:pointer}
.photo-stage__hint{
  position:absolute; right:12px; bottom:14px; z-index:3;
  font-size:10px; letter-spacing:.08em; text-transform:uppercase; font-weight:600;
  color:rgba(255,243,217,.75); background:rgba(30,8,6,.45);
  border:1px solid rgba(227,194,90,.25); border-radius:99px; padding:4px 9px;
  pointer-events:none;
}
.photo-stage__frame:hover .photo-stage__hint{color:#FFF3D9; background:rgba(30,8,6,.65)}

/* ==================================================================
   TRANG TƯ TƯỞNG: ảnh minh hoạ và thẻ nội dung
   ================================================================== */
.tt-intro{margin:0 0 22px}
.tt-intro__media{
  position:relative; border-radius:calc(var(--radius) + 2px); overflow:hidden;
  aspect-ratio:16/9; border:1px solid rgba(201,162,39,.45); box-shadow:var(--shadow);
  background:#E9DFC8;
}
.tt-intro__media img{width:100%; height:100%; object-fit:cover; filter:saturate(.92)}
.tt-intro__cap{
  position:absolute; left:0; right:0; bottom:0; padding:26px 14px 10px;
  font-size:11px; color:#FFF3D9; letter-spacing:.03em;
  background:linear-gradient(180deg, transparent, rgba(30,8,6,.82));
}
.tt-intro__text{
  margin:14px 0 0; font-size:13.8px; line-height:1.72; color:var(--ink-2);
  text-align:justify;
}

.tt-nav{display:grid; grid-template-columns:repeat(2,1fr); gap:9px; margin:0 0 24px}
@media (min-width:520px){ .tt-nav{grid-template-columns:repeat(4,1fr)} }
.tt-nav__item{
  display:grid; gap:2px; justify-items:center; text-align:center; cursor:pointer;
  padding:12px 8px; border-radius:12px; border:1px solid var(--line);
  background:var(--paper); color:var(--ink-2); font:inherit; font-size:12.5px; font-weight:600;
  box-shadow:var(--shadow-sm); transition:.18s;
}
.tt-nav__item b{
  font-family:var(--font-serif); font-size:15px; color:var(--gold); letter-spacing:.03em;
}
.tt-nav__item:hover{border-color:var(--gold-300); color:var(--red-800); transform:translateY(-2px)}

.tt-card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow-sm); margin-bottom:18px;
  scroll-margin-top:84px; transition:box-shadow .25s ease, border-color .25s ease;
}
.tt-card.is-flash{border-color:var(--gold); box-shadow:0 0 0 3px rgba(201,162,39,.18), var(--shadow)}

.tt-card__media{position:relative; aspect-ratio:16/10; background:#2A1410; overflow:hidden}
.tt-card__media img{width:100%; height:100%; object-fit:cover; filter:saturate(.9) contrast(1.02)}
.tt-card__no{
  position:absolute; top:12px; left:14px; z-index:2;
  font-family:var(--font-serif); font-size:13px; font-weight:700; color:#4A3A05;
  background:linear-gradient(150deg, var(--gold-300), var(--gold));
  width:38px; height:38px; border-radius:50%; display:grid; place-items:center;
  box-shadow:0 4px 12px -3px rgba(120,90,10,.8);
}
.tt-card__cap{
  position:absolute; left:0; right:0; bottom:0; padding:30px 14px 9px;
  font-size:10.5px; color:#FFF3D9;
  background:linear-gradient(180deg, transparent, rgba(30,8,6,.85));
}
.tt-card__body{padding:18px 18px 20px}
.tt-card__body h3{
  margin:0 0 6px; font-family:var(--font-serif); font-size:16.5px; color:var(--red-800); line-height:1.35;
}
.tt-card__lead{
  margin:0 0 10px !important; font-size:12.5px !important; color:var(--gold-600) !important;
  line-height:1.55 !important; text-align:left !important; font-weight:500;
}
.tt-card__body > p{margin:0 0 10px; font-size:13.6px; line-height:1.72; color:var(--ink-2); text-align:justify}

.tt-cta{
  display:grid; grid-template-columns:38px 1fr 18px; align-items:center; gap:12px;
  margin-top:8px; padding:14px 16px; border-radius:14px; text-decoration:none;
  background:linear-gradient(135deg, #FBF0D8, #F6E7C4); border:1px solid var(--gold-100);
  color:var(--ink-2); transition:.2s;
}
.tt-cta:hover{border-color:var(--gold-300); box-shadow:var(--shadow-sm); transform:translateY(-1px)}
.tt-cta > svg{color:var(--gold-600); width:24px; height:24px}
.tt-cta b{display:block; font-family:var(--font-serif); font-size:13.5px; color:var(--red-800)}
.tt-cta small{display:block; font-size:11.5px; color:var(--muted); margin-top:2px; line-height:1.4}
.tt-cta__go{color:var(--gold-600); font-size:18px; text-align:right}

/* ==========================================================================
   BẢO TÀNG SỐ: 5 BẢO VẬT QUỐC GIA
   ========================================================================== */
.museum{margin-top:4px}
.museum__shelf{display:flex; gap:10px; overflow-x:auto; padding:4px 2px 14px; scrollbar-width:none}
.museum__shelf::-webkit-scrollbar{display:none}

.shelf-item{
  flex:0 0 auto; width:104px; border:0; background:none; padding:0; cursor:pointer;
  display:grid; gap:6px; text-align:left; color:var(--ink-2);
}
.shelf-item__cover{
  position:relative; display:block; aspect-ratio:3/4; border-radius:8px; overflow:hidden;
  background:#2A1410; box-shadow:var(--shadow-sm); border:2px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.shelf-item__cover img{width:100%; height:100%; object-fit:cover}
.shelf-item__no{
  position:absolute; left:6px; top:6px; z-index:2; font-family:var(--font-serif); font-size:10px;
  font-weight:700; color:#4A3A05; background:var(--gold-300); border-radius:99px; padding:1px 6px;
}
.shelf-item__t{
  font-size:11.5px; font-weight:600; line-height:1.3; color:var(--ink-2);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.shelf-item__y{font-size:10.5px; color:var(--muted)}
.shelf-item.is-active .shelf-item__cover{border-color:var(--gold); transform:translateY(-2px); box-shadow:0 8px 20px -8px rgba(120,90,10,.8)}
.shelf-item.is-active .shelf-item__t{color:var(--red-800)}

.cover-fb{
  position:relative; width:100%; height:100%; display:grid; align-content:center; justify-items:center;
  gap:5px; padding:8px; text-align:center; color:#F6E6B8;
  background:linear-gradient(150deg,#B3131B,#7E0B12 62%,#5E080D);
  border:1px solid rgba(227,194,90,.5);
}
.cover-fb::after{content:""; position:absolute; inset:5px; border:1px solid rgba(227,194,90,.42); border-radius:3px}
.cover-fb__t{font-family:var(--font-serif); font-size:11px; line-height:1.35; font-weight:700}
.cover-fb__y{font-style:normal; font-size:9.5px; color:var(--gold-300)}
.cover-fb__mark{color:var(--gold-300); font-size:9px; opacity:.75}
.cover-fb--lg{width:74%; height:84%; border-radius:4px; box-shadow:0 20px 44px -14px #000}
.cover-fb--lg .cover-fb__t{font-size:19px}
.cover-fb--lg .cover-fb__y{font-size:12px}
.cover-fb--lg .cover-fb__mark{font-size:15px}

.museum__stage{margin-top:2px}
.exhibit{
  display:none; background:var(--paper); border:1px solid var(--line);
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow);
}
.exhibit.is-active{display:block; animation:rise .35s ease both}
.exhibit__media{position:relative; aspect-ratio:4/3; background:#1B0B08; display:grid; place-items:center; overflow:hidden}
.exhibit__media img{width:100%; height:100%; object-fit:cover}
.exhibit__no{
  position:absolute; left:14px; top:12px; font-family:var(--font-serif); font-size:22px;
  font-weight:900; color:rgba(255,243,217,.9); text-shadow:0 2px 10px rgba(0,0,0,.65);
}
.exhibit__body{padding:18px}
.exhibit__meta{margin:0 0 4px; font-size:10.5px; letter-spacing:.09em; text-transform:uppercase; color:var(--gold-600); font-weight:600}
.exhibit__title{margin:0 0 10px; font-family:var(--font-serif); font-size:19px; color:var(--red-800); line-height:1.35}
.exhibit__sum{margin:0 0 14px; font-size:13.8px; line-height:1.7; color:var(--ink-2); text-align:justify}
.exhibit__row{margin:0 0 12px; padding-left:12px; border-left:2px solid var(--line)}
.exhibit__row h4{margin:0 0 3px; font-size:10.5px; letter-spacing:.07em; text-transform:uppercase; color:var(--gold-600)}
.exhibit__row p{margin:0; font-size:13.3px; line-height:1.68; color:var(--ink-2)}
.exhibit__audio{margin-top:14px; display:grid; gap:5px}
.exhibit__audio audio{width:100%; height:38px}
.exhibit__audio span{font-size:11px; color:var(--muted)}
.exhibit__audio--empty{
  display:flex; align-items:center; gap:8px; padding:10px 12px;
  border:1px dashed var(--line); border-radius:var(--radius-sm); color:var(--muted); font-size:12px;
}
.exhibit__audio--empty svg{width:14px; height:14px; color:var(--gold); flex:0 0 auto}

/* ==========================================================================
   TƯ LIỆU GỐC (trang Tư tưởng)
   ========================================================================== */
.tulieu{margin:30px 0 20px}
.tulieu__head h3{margin:0 0 4px; font-family:var(--font-serif); font-size:16px; color:var(--red-800); text-align:center}
.tulieu__head p{margin:0 0 14px; font-size:12px; color:var(--muted); text-align:center; line-height:1.5}
.tulieu__row{display:flex; gap:10px; overflow-x:auto; padding:2px 2px 10px; scrollbar-width:none}
.tulieu__row::-webkit-scrollbar{display:none}
.tulieu-card{flex:0 0 148px; margin:0}
.tulieu-card__media{
  aspect-ratio:3/4; border-radius:10px; overflow:hidden; background:#E9DFC8;
  box-shadow:var(--shadow-sm); border:1px solid var(--line);
}
.tulieu-card__media img{width:100%; height:100%; object-fit:cover}
.tulieu-card figcaption{margin-top:6px; font-size:10.5px; line-height:1.4; color:var(--muted)}
.tulieu-card figcaption b{display:block; font-size:11px; color:var(--ink-2); font-weight:600; line-height:1.35}

/* ==========================================================================
   THƯ VIỆN TƯ LIỆU: dạng thẻ
   ========================================================================== */
.lib-grid{display:grid; gap:10px; grid-template-columns:1fr}
@media (min-width:620px){ .lib-grid{grid-template-columns:1fr 1fr} }

.lib-card{
  display:flex; flex-direction:column; gap:7px; padding:15px 16px;
  background:var(--paper); border:1px solid var(--line); border-radius:14px;
  box-shadow:var(--shadow-sm); text-decoration:none; color:inherit;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.lib-card:hover{transform:translateY(-2px); box-shadow:var(--shadow); border-color:var(--gold-300)}
.lib-card--local{background:#FDFBF4}

.lib-card__type{
  display:inline-flex; align-items:center; gap:6px; align-self:flex-start;
  font-size:10px; font-weight:700; letter-spacing:.05em; text-transform:uppercase;
  color:var(--c); background:var(--cb); border-radius:99px; padding:4px 9px;
}
.lib-card__type svg{width:11px; height:11px}
.lib-card h3{margin:0; font-family:var(--font-serif); font-size:14.5px; line-height:1.4; color:var(--red-800)}
.lib-card p{margin:0; font-size:12.5px; line-height:1.55; color:var(--muted)}
.lib-card__foot{
  margin-top:auto; padding-top:8px; border-top:1px dashed var(--line-2);
  display:flex; align-items:center; justify-content:space-between; gap:8px;
  font-size:10.5px; color:var(--muted);
}
.lib-card__foot svg{color:var(--gold-600); flex:0 0 auto}

/* ==========================================================================
   THỚI AN: thẻ địa điểm có biểu tượng
   ========================================================================== */
.place{
  display:grid; grid-template-columns:42px 1fr auto; gap:13px; align-items:start;
  background:var(--paper); border:1px solid var(--line); border-radius:14px;
  padding:14px 15px; margin-bottom:10px; box-shadow:var(--shadow-sm);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.place:hover{border-color:var(--gold-300); box-shadow:var(--shadow)}
.place__ico{
  position:relative; width:42px; height:42px; border-radius:12px; display:grid; place-items:center;
  background:linear-gradient(150deg,#E7F0F6,#fff); color:#2C6584; border:1px solid rgba(44,101,132,.14);
}
.place__ico svg{width:19px; height:19px}
.place__ico b{
  position:absolute; right:-5px; bottom:-5px; width:18px; height:18px; border-radius:50%;
  background:var(--red); color:#fff; font-size:9.5px; display:grid; place-items:center;
  border:2px solid var(--paper);
}
.place__body{min-width:0}
.place__body h3{margin:0 0 3px; font-size:14.5px; color:var(--red-800); font-family:var(--font-serif); line-height:1.35}
.place__body p{margin:0; font-size:12.5px; color:var(--muted); line-height:1.55}
.place__map{
  align-self:center; flex:0 0 auto; font-size:11.5px; font-weight:600; padding:7px 13px;
  border-radius:99px; border:1px solid var(--line); color:var(--red); text-decoration:none; white-space:nowrap;
}
.place__map:hover{border-color:var(--gold-300); background:#FFFBF0}

/* Ảnh tài liệu (sách, bản thảo): hiển thị trọn vẹn, không cắt */
.tt-card__media.is-contain{background:#EFE6D2}
.tt-card__media.is-contain img{object-fit:contain; padding:18px 14px 34px}

.exhibit__media.is-contain{background:#EFE6D2}
.exhibit__media.is-contain img{object-fit:contain; padding:22px 18px}
.exhibit__media.is-contain .exhibit__no{color:#6E0A10; text-shadow:none; opacity:.55}

.tulieu-card__media{background:#EFE6D2}
.tulieu-card__media img{object-fit:contain; padding:7px}

/* ==========================================================================
   BÌA SÁCH BỐN TRỤ CỘT (trang Tư tưởng)
   ========================================================================== */
.tt-card__media.is-book{
  display:grid; place-items:center; padding:22px 0;
  background:radial-gradient(120% 100% at 50% 0%, #FCF5E3 0%, #F1E5CA 58%, #E6D5B4 100%);
}
.book{
  position:relative; height:86%; aspect-ratio:2/3;
  transform:perspective(1000px) rotateY(-13deg) rotateX(1.5deg);
  transform-origin:left center;
  filter:drop-shadow(0 20px 26px rgba(80,45,10,.38));
  transition:transform .4s cubic-bezier(.22,.8,.3,1);
}
.tt-card:hover .book{transform:perspective(1000px) rotateY(-6deg) rotateX(.5deg) translateY(-3px)}
.book__cover{
  position:relative; width:100%; height:100%; display:flex; flex-direction:column;
  gap:5px; padding:15px 13px 12px 21px; overflow:hidden;
  border-radius:3px 7px 7px 3px; color:#FFF3D2;
  background:
    linear-gradient(158deg, rgba(255,255,255,.14), rgba(255,255,255,0) 42%),
    linear-gradient(158deg, var(--bc), #6E0A10 130%);
  box-shadow:inset 0 0 0 1px rgba(227,194,90,.45), inset -12px 0 20px -14px rgba(0,0,0,.7);
}
.book__cover::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:10px;
  background:linear-gradient(90deg, rgba(0,0,0,.55), rgba(255,255,255,.14) 55%, rgba(0,0,0,.2));
}
.book__cover::after{
  content:""; position:absolute; inset:7px 7px 7px 16px; border-radius:2px;
  border:1px solid rgba(227,194,90,.38); pointer-events:none;
}
.book__series{
  position:relative; z-index:1; font-size:7px; letter-spacing:.18em;
  text-transform:uppercase; color:rgba(255,240,200,.72); font-weight:600;
}
.book__no{
  position:absolute; z-index:1; right:12px; top:8px;
  font-family:var(--font-serif); font-size:34px; font-weight:900; line-height:1;
  color:rgba(255,214,120,.3); letter-spacing:-.02em;
}
.book__title{
  position:relative; z-index:1; margin-top:auto; margin-bottom:auto;
  font-family:var(--font-serif); font-size:15px; font-weight:900; line-height:1.14;
  letter-spacing:.01em;
}
.book__title em{
  display:block; font-style:normal; color:var(--gold-300); font-size:.82em;
  margin-top:3px; letter-spacing:.02em;
}
.book__rule{
  position:relative; z-index:1; display:block; height:1px; margin:7px 0 6px;
  background:linear-gradient(90deg, var(--gold-300), rgba(227,194,90,0));
}
.book__sub{
  position:relative; z-index:1; font-size:8.5px; line-height:1.45;
  color:rgba(255,243,210,.82); letter-spacing:.02em;
}
.book__foot{
  position:relative; z-index:1; margin-top:auto; padding-top:8px;
  font-size:6.5px; letter-spacing:.11em; text-transform:uppercase;
  color:rgba(255,240,200,.5);
}

/* Bìa sách: khung cao hơn và giới hạn chiều cao để không bị cắt */
.tt-card__media.is-book{aspect-ratio:4/3; padding:20px 0}
.book{height:84%; min-height:0; max-height:100%}
.book__cover{min-height:0}
@media (min-width:520px){
  .tt-card__media.is-book{aspect-ratio:16/9}
  .book{height:88%}
}

/* Tinh chỉnh chữ trên bìa */
.book{height:94%}
.book__series{white-space:nowrap; font-size:6.2px; letter-spacing:.09em}
.book__foot{white-space:nowrap; font-size:5.6px; letter-spacing:.04em; overflow:hidden}
.book__sub{font-size:8px}
.book__title{font-size:15.5px}
@media (min-width:520px){ .book{height:92%} }

/* ==========================================================================
   TRANG TƯ TƯỞNG: sơ đồ 4 trụ cột và bảng nội dung
   ========================================================================== */
.pv{margin:4px 0 20px}
.pv__cols{display:grid; grid-template-columns:repeat(4,1fr); gap:8px; align-items:end}
.pv__col{
  display:flex; flex-direction:column; align-items:center; gap:0;
  background:none; border:0; padding:0; cursor:pointer;
}
.pv__cap{
  width:42px; height:42px; border-radius:12px; display:grid; place-items:center;
  font-family:var(--font-serif); font-size:13px; font-weight:700; color:var(--gold-600);
  background:linear-gradient(160deg,#FCF5E3,#F1E5CA); border:1px solid var(--gold-100);
  margin-bottom:7px; transition:transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
}
.pv__shaft{
  position:relative; display:block; width:100%; max-width:54px; height:64px;
  border-radius:5px 5px 2px 2px;
  background:linear-gradient(180deg, #F3E9CF, #E2D2AC);
  box-shadow:inset 0 0 0 1px rgba(140,90,20,.14), inset -6px 0 10px -8px rgba(120,80,10,.5);
  transition:background .25s ease, box-shadow .25s ease;
}
.pv__shaft::after{
  content:""; position:absolute; left:50%; top:6px; bottom:6px; width:1px;
  background:repeating-linear-gradient(180deg, rgba(140,90,20,.22) 0 3px, transparent 3px 8px);
}
.pv__col:hover .pv__cap{transform:translateY(-2px)}
.pv__col.is-active .pv__cap{
  background:linear-gradient(160deg, var(--red), var(--red-800)); color:#FFF3D2;
  border-color:transparent; box-shadow:0 6px 16px -6px rgba(179,19,27,.8);
}
.pv__col.is-active .pv__shaft{
  background:linear-gradient(180deg,#E9C86A,#C9A227);
  box-shadow:inset 0 0 0 1px rgba(120,80,10,.3), 0 0 0 3px rgba(201,162,39,.14);
}
.pv__base{
  height:9px; border-radius:4px; margin-top:3px;
  background:linear-gradient(180deg,#D9B44A,#A9861A);
  box-shadow:0 5px 14px -6px rgba(120,90,10,.85);
}
.pv__labels{display:grid; grid-template-columns:repeat(4,1fr); gap:8px; margin-top:9px}
.pv__label{
  background:none; border:0; padding:4px 2px; font:inherit; font-size:11.5px; line-height:1.3;
  color:var(--muted); cursor:pointer; border-radius:6px; transition:.18s;
}
.pv__label:hover{color:var(--red-800); background:#FBF3E2}
.pv__label.is-active{color:var(--red-800); font-weight:700}

.tt-panels{position:relative}
.tt-panel{
  display:none; position:relative; background:var(--paper); border:1px solid var(--line);
  border-radius:var(--radius); padding:20px 18px; box-shadow:var(--shadow-sm);
}
.tt-panel.is-active{display:block; animation:rise .32s cubic-bezier(.22,.8,.3,1) both}
.tt-panel__no{
  position:absolute; right:16px; top:12px; font-family:var(--font-serif);
  font-size:40px; font-weight:900; line-height:1; color:rgba(201,162,39,.16);
}
.tt-panel h2{
  margin:0 0 7px; font-family:var(--font-serif); font-size:18.5px; line-height:1.35;
  color:var(--red-800); padding-right:52px;
}
.tt-panel__lead{
  margin:0 0 11px !important; font-size:13.2px !important; line-height:1.6 !important;
  color:var(--gold-600) !important; font-weight:500; text-align:left !important;
}
.tt-panel > p{margin:0 0 10px; font-size:13.6px; line-height:1.72; color:var(--ink-2); text-align:justify}
.tt-panel__practice{
  margin-top:14px; padding:13px 15px; border-radius:12px;
  background:linear-gradient(135deg,#EFF7F2,#E4F1E9); border-left:3px solid #1F6B52;
}
.tt-panel__practice h4{
  display:flex; align-items:center; gap:6px; margin:0 0 5px;
  font-size:10.5px; letter-spacing:.09em; text-transform:uppercase; color:#1F6B52;
}
.tt-panel__practice h4 svg{width:13px; height:13px}
.tt-panel__practice p{margin:0; font-size:13.2px; line-height:1.66; color:#26523f}

/* ==========================================================================
   HAI CỘT HAI BÊN: hành trình của bạn và ngày này năm xưa
   ========================================================================== */
.rail-progress{text-align:center}
.rail-ring{position:relative; width:88px; height:88px; margin:2px auto 10px}
.rail-ring svg{width:88px; height:88px; transform:rotate(-90deg); display:block}
.rail-ring__bg{fill:none; stroke:#EFE6D2; stroke-width:6}
.rail-ring__fg{
  fill:none; stroke:var(--red); stroke-width:6; stroke-linecap:round;
  transition:stroke-dashoffset .7s cubic-bezier(.22,.8,.3,1);
}
.rail-ring b{
  position:absolute; inset:0; display:flex; align-items:baseline; justify-content:center;
  gap:1px; font-family:var(--font-serif); font-size:21px; font-weight:900;
  color:var(--red-800); line-height:1; padding-top:26px;
}
.rail-ring b small{font-size:11px; font-weight:400; color:var(--muted)}

.rail-btn--primary{
  background:linear-gradient(150deg, var(--red), var(--red-800));
  color:#fff; border-color:transparent; box-shadow:0 6px 16px -8px rgba(179,19,27,.9);
}
.rail-btn--primary:hover{background:linear-gradient(150deg, var(--red-600), var(--red)); color:#fff; border-color:transparent}

.rail-date{
  margin:0 0 9px; font-size:11px; color:var(--muted); line-height:1.4;
  text-transform:capitalize; letter-spacing:.02em;
}
.rail-today{
  background:#FBF5E6; border:1px solid var(--gold-100); border-radius:10px;
  padding:9px 10px; margin-bottom:9px; text-align:left;
}
.rail-today__tag{
  display:block; font-size:8.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--gold-600); font-weight:700; margin-bottom:4px;
}
.rail-today b{display:block; font-family:var(--font-serif); font-size:12.5px; color:var(--red-800); line-height:1.3}
.rail-today__name{display:block; font-size:11px; color:var(--ink-2); line-height:1.35; margin-top:2px}

.rail-ring b{display:grid; place-items:center; padding-top:0; line-height:1}
.rail-ring__num{display:flex; align-items:baseline; gap:1px; line-height:1}

/* Album nhiều ảnh: ẩn bớt và nút xem thêm */
.album-item.is-hidden{display:none}
.album-more-wrap{text-align:center; margin:14px 0 0}
.album-more{
  border:1px solid var(--gold-300); background:#FFFBF0; color:var(--red-800);
  font:inherit; font-size:12.5px; font-weight:600; padding:10px 20px; border-radius:99px;
  cursor:pointer; transition:.18s;
}
.album-more:hover{background:#FBF1D6; box-shadow:var(--shadow-sm)}

/* Lưới album: chặn tràn cột khi ảnh có kích thước gốc lớn */
.album-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.album-item{min-width:0}
.album-item img{min-width:0}
@media (min-width:640px){
  .album-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
}

/* ==========================================================================
   PHÒNG TRƯNG BÀY 3D
   ========================================================================== */
body[data-view="khong-gian-3d"] .rail{display:none}
body[data-view="khong-gian-3d"] .app{padding:0; max-width:none}
body[data-view="khong-gian-3d"]{overflow:hidden}

.g3d{position:fixed; inset:0; z-index:300; background:#0d0605; overflow:hidden}
.g3d__canvas{position:absolute; inset:0; cursor:grab}
.g3d__canvas:active{cursor:grabbing}
.g3d__canvas canvas{display:block; width:100% !important; height:100% !important}

.g3d__hud{
  position:absolute; left:0; right:0; top:0; z-index:3;
  padding:calc(env(safe-area-inset-top) + 14px) 16px 14px;
  display:flex; align-items:center; gap:12px;
  background:linear-gradient(180deg, rgba(13,6,5,.85), rgba(13,6,5,0));
  pointer-events:none;
}
.g3d__brand b{display:block; font-family:var(--font-serif); font-size:15px; color:#FFF3D2; letter-spacing:.02em}
.g3d__brand small{display:block; font-size:10.5px; color:rgba(255,243,210,.6); margin-top:2px}
.g3d__exit{
  margin-left:auto; pointer-events:auto; cursor:pointer;
  background:rgba(255,255,255,.08); border:1px solid rgba(227,194,90,.4); color:#FFF3D2;
  font-size:12px; padding:8px 16px; border-radius:99px;
}
.g3d__exit:hover{background:rgba(227,194,90,.18)}

.g3d__hint{
  position:absolute; left:0; right:0; bottom:calc(env(safe-area-inset-bottom) + 14px); z-index:3;
  margin:0; text-align:center; font-size:11.5px; color:rgba(255,243,210,.62);
  pointer-events:none;
}

.g3d__loading{
  position:absolute; inset:0; z-index:4; display:grid; place-content:center; justify-items:center; gap:12px;
  background:#0d0605; color:#FFF3D2; text-align:center; padding:24px;
}
.g3d__loading b{font-family:var(--font-serif); font-size:15px}
.g3d__loading span{font-size:12px; color:rgba(255,243,210,.6); line-height:1.5; max-width:36ch}
.g3d__spin{
  width:38px; height:38px; border-radius:50%;
  border:2px solid rgba(227,194,90,.25); border-top-color:var(--gold-300);
  animation:spin 1s linear infinite;
}

.g3d__panel{
  position:absolute; z-index:5; left:16px; right:16px; bottom:16px;
  max-width:420px; padding:16px 18px 18px;
  background:var(--paper); border:1px solid var(--gold-300); border-radius:14px;
  box-shadow:var(--shadow-lg);
  animation:rise .28s ease both;
}
.g3d__panel[hidden]{display:none}
@media (min-width:720px){ .g3d__panel{left:auto; right:24px; bottom:24px; width:360px} }
.g3d__close{
  position:absolute; right:10px; top:8px; border:0; background:none; cursor:pointer;
  font-size:22px; line-height:1; color:var(--muted);
}
.g3d__year{display:inline-block; font-size:10px; letter-spacing:.08em; text-transform:uppercase; color:var(--gold-600); font-weight:700; margin-bottom:5px}
.g3d__panel h3{margin:0 0 7px; font-family:var(--font-serif); font-size:15.5px; color:var(--red-800); line-height:1.35; padding-right:20px}
.g3d__panel p{margin:0 0 8px; font-size:12.8px; line-height:1.6; color:var(--ink-2)}
.g3d__src{display:block; padding-top:8px; border-top:1px dashed var(--line-2); font-size:10.5px; color:var(--muted)}

/* Thẻ mời vào phòng 3D ở trang chủ */
.g3d-cta{
  display:grid; grid-template-columns:auto 1fr 18px; align-items:center; gap:13px;
  margin:18px 0 22px; padding:14px 16px; border-radius:14px; text-decoration:none;
  background:linear-gradient(135deg,#2A1410,#4A1A14); color:#FFF3D2;
  border:1px solid rgba(201,162,39,.5); box-shadow:0 12px 28px -18px rgba(60,10,5,.9);
  transition:transform .2s ease, box-shadow .2s ease;
}
.g3d-cta:hover{transform:translateY(-2px); box-shadow:0 18px 34px -18px rgba(60,10,5,1)}
.g3d-cta__badge{
  display:grid; place-items:center; width:44px; height:44px; border-radius:12px;
  font-family:var(--font-serif); font-weight:900; font-size:15px; letter-spacing:.02em;
  color:#4A3A05; background:linear-gradient(150deg,var(--gold-300),var(--gold));
}
.g3d-cta__txt b{display:block; font-family:var(--font-serif); font-size:14.5px; color:#FFF3D2}
.g3d-cta__txt small{display:block; font-size:11.5px; color:rgba(255,243,210,.65); margin-top:2px; line-height:1.4}
.g3d-cta__go{color:var(--gold-300); font-size:20px; text-align:right}

body[data-view="khong-gian-3d"] .site-header,
body[data-view="khong-gian-3d"] .tabbar,
body[data-view="khong-gian-3d"] .site-footer,
body[data-view="khong-gian-3d"] .fab,
body[data-view="khong-gian-3d"] .demo-bar{display:none}
body[data-view="khong-gian-3d"] .shell{display:block; padding:0; max-width:none}
body[data-view="khong-gian-3d"] .app{max-width:none; padding:0}

/* Thanh chọn mục trong phòng 3D */
.g3d__tabs{
  position:absolute; left:0; right:0; top:calc(env(safe-area-inset-top) + 58px); z-index:3;
  display:flex; gap:8px; overflow-x:auto; padding:2px 16px 10px;
  scrollbar-width:none; pointer-events:auto;
  background:linear-gradient(180deg, rgba(13,6,5,.7), rgba(13,6,5,0));
}
.g3d__tabs::-webkit-scrollbar{display:none}
.g3d__tab{
  flex:0 0 auto; cursor:pointer; white-space:nowrap;
  padding:7px 14px; border-radius:99px; font-size:12px; font-weight:600;
  color:rgba(255,243,210,.75); background:rgba(255,255,255,.07);
  border:1px solid rgba(227,194,90,.28);
  transition:.18s;
}
.g3d__tab:hover{color:#FFF3D2; background:rgba(227,194,90,.16)}
.g3d__tab[aria-selected="true"]{
  color:#4A3A05; background:linear-gradient(150deg, var(--gold-300), var(--gold));
  border-color:transparent; box-shadow:0 4px 14px -6px rgba(227,194,90,.9);
}
@media (max-width:520px){
  .g3d__tabs{top:calc(env(safe-area-inset-top) + 54px); padding:2px 12px 8px}
  .g3d__tab{font-size:11px; padding:6px 12px}
}