/* Bố cục: blog du lịch kiểu tạp chí — top bar, logo giữa, menu có dropdown điểm đến,
   slider bài nổi bật, ô danh mục, danh sách bài + sidebar, bản tin, dải ảnh, footer. */
:root{
  --bg:#FFFFFF; --soft:#F5F3F1; --ink:#222222; --muted:#6F6A66; --line:#E6E2DE;
  --accent:#B5835A; --accent-ink:#9C6C45; --dark:#1E1C1B; --on-dark:#F3EFEA; --veil:rgba(255,255,255,.96);
  --display:"Playfair Display", Georgia, "Times New Roman", serif;
  --body:"Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#161514; --soft:#1F1D1C; --ink:#ECE8E4; --muted:#A39D97; --line:#33302E;
  --accent:#D3A479; --accent-ink:#D3A479; --dark:#0E0D0C; --on-dark:#ECE8E4; --veil:rgba(22,21,20,.94); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#161514; --soft:#1F1D1C; --ink:#ECE8E4; --muted:#A39D97; --line:#33302E;
  --accent:#D3A479; --accent-ink:#D3A479; --dark:#0E0D0C; --on-dark:#ECE8E4; --veil:rgba(22,21,20,.94); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.7}
img{max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent-ink)}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.2;text-wrap:balance;margin:0}
p{text-wrap:pretty}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.label{font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600}
.accent{color:var(--accent-ink)}
.empty{text-align:center;color:var(--muted)}

/* Khung ảnh: ảnh lấp đầy khung, có thể dịch/phóng theo SLOTS */
.ph{position:relative;width:100%;height:100%;overflow:hidden;background:var(--soft)}
.ph > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;max-width:none}
.ph > img.framed{inset:auto;object-fit:fill;transform:translate(-50%,-50%)}
.ph > svg{position:absolute;inset:0;width:100%;height:100%;display:block}
.ph.blank{display:grid;place-items:center;text-align:center;padding:12px;color:var(--muted);font-size:12px;letter-spacing:.04em;border:1px dashed var(--line)}
.zoom .ph > img:not(.framed),.zoom .ph > svg{transition:transform .6s}
.zoom:hover .ph > img:not(.framed),.zoom:hover .ph > svg{transform:scale(1.04)}

/* Nút */
.btn{display:inline-block;border:1px solid var(--ink);background:transparent;padding:10px 24px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;transition:background .2s,color .2s}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn.solid{border:0;background:var(--ink);color:var(--bg)}
.more{border:0;border-bottom:1px solid var(--accent);background:none;padding:0 0 3px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600}
.more:hover{color:var(--accent-ink)}

/* Top bar */
.topbar{border-bottom:1px solid var(--line);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-block:9px;flex-wrap:wrap}
.topbar .soc{display:flex;gap:18px}

/* Logo */
.brand{text-align:center;padding-block:36px 26px}
.brand .logo{display:inline-block;font-family:var(--display);font-style:italic;font-weight:500;font-size:clamp(40px,6vw,58px);line-height:1.1;letter-spacing:-.01em}
.brand .tagline{color:var(--muted);margin:6px 0 0}

/* Nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--veil);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;justify-content:center;flex-wrap:wrap;gap:0 30px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:600}
.nav button{background:none;border:0;padding:15px 0;letter-spacing:inherit;text-transform:inherit;font-weight:inherit}
.nav button:hover,.nav button.on{color:var(--accent-ink)}
.nav .caret{font-size:9px;margin-left:4px}
.dd{position:relative}
.menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:var(--bg);border:1px solid var(--line);box-shadow:0 18px 40px rgba(30,28,27,.10);width:max-content;min-width:min(390px,calc(100vw - 32px));max-width:calc(100vw - 32px);padding:14px 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));text-transform:none;letter-spacing:0}
.menu .col,.menu .col > div{display:flex;flex-direction:column;min-width:0}
.menu .col + .col{border-left:1px solid var(--line)}
.menu .grp{padding:4px 20px 6px;color:var(--muted);font-size:10px;letter-spacing:.2em;text-transform:uppercase}
.menu button{display:block;width:100%;text-align:left;padding:6px 20px;font-size:14px;font-weight:500;letter-spacing:0;text-transform:none;white-space:nowrap}
.menu button:hover{background:var(--soft)}

/* Slider + hero có hộp chữ */
.hero-box{position:relative;margin-top:34px;min-height:460px;display:grid;overflow:hidden;background:var(--soft)}
.hero-box .bg{position:absolute;inset:0}
.hero-box .box{position:relative;z-index:1;align-self:center;justify-self:center;background:var(--bg);text-align:center;padding:32px 44px;max-width:min(580px,92%);margin:44px 0 80px}
.hero-box h2{font-size:clamp(26px,3.4vw,36px);margin:12px 0 18px}
.ctrl{position:absolute;z-index:1;left:50%;transform:translateX(-50%);bottom:18px;display:flex;align-items:center;gap:12px}
.ctrl .arrow{width:40px;height:40px;border-radius:50%;border:0;background:var(--bg);font-size:18px}
.counter{background:var(--bg);border-radius:20px;padding:0 16px;height:40px;display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.1em;font-variant-numeric:tabular-nums}
.counter .track{width:60px;height:2px;background:var(--line);position:relative;overflow:hidden}
.counter .track i{position:absolute;left:0;top:0;bottom:0;background:var(--ink);transition:width .4s}
.counter .of{color:var(--muted)}

/* Ô danh mục */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin-top:40px}
.tile{position:relative;aspect-ratio:4/3;display:grid;place-items:center;max-width:100%;border:0;padding:0;background:none}
.tile .ph{position:absolute;inset:0}
.tile span.name{position:relative;z-index:1;background:var(--bg);padding:9px 20px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;display:flex;gap:10px;align-items:center}
.tile:hover span.name{color:var(--accent-ink)}
.tile .count{color:var(--muted);font-weight:500}

/* Nội dung + sidebar */
.main{display:flex;flex-wrap:wrap;gap:56px;margin-top:64px;align-items:flex-start}
#posts{flex:1 1 560px;min-width:0}
aside{flex:0 1 300px;min-width:260px;display:flex;flex-direction:column;gap:42px}
.sec-title{display:flex;align-items:center;gap:18px;margin-bottom:28px}
.sec-title::before,.sec-title::after{content:"";flex:1;height:1px;background:var(--line)}
.chip-row{display:flex;justify-content:center;margin:-8px 0 30px}
.chip{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:999px;background:var(--soft);padding:6px 8px 6px 16px;font-size:13px}
.chip:hover{border-color:var(--ink)}
.chip .x{width:22px;height:22px;border-radius:50%;background:var(--ink);color:var(--bg);display:grid;place-items:center;font-size:12px}

.lead{text-align:center;padding-bottom:44px;margin-bottom:44px;border-bottom:1px solid var(--line)}
.lead .pic{aspect-ratio:16/9;max-width:100%;display:block}
.lead .label{margin-top:26px}
.lead h3{font-size:32px;margin:10px 0 12px}
.lead p{color:var(--muted);max-width:62ch;margin:0 auto 20px}
.post{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:30px;align-items:center;padding-bottom:40px;margin-bottom:40px;border-bottom:1px solid var(--line)}
.post .pic{aspect-ratio:4/3;max-width:100%;display:block}
.post h3{font-size:25px;line-height:1.25;margin:8px 0 10px}
.post p{color:var(--muted);margin:0 0 18px}
.lead h3 a:hover,.post h3 a:hover{color:var(--accent-ink)}

.widget h4{font-family:var(--body);font-size:11px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;text-align:center;padding:10px;border:1px solid var(--line);margin-bottom:20px}
.about{text-align:center}
.about .avatar{width:150px;height:150px;margin:0 auto 16px;border-radius:50%;overflow:hidden}
.about p{color:var(--muted);margin:0 0 12px;text-align:justify;hyphens:auto}
.sig{font-family:var(--display);font-style:italic;font-size:22px}
.search{display:flex;border:1px solid var(--line)}
.search input{flex:1;min-width:0;border:0;padding:11px 12px;background:transparent;outline:none}
.search button{border:0;background:var(--ink);color:var(--bg);padding:0 16px}
.catlist{display:flex;flex-direction:column;margin-top:-8px}
.catlist button{display:flex;justify-content:space-between;background:none;border:0;border-bottom:1px dashed var(--line);padding:9px 0;text-align:left}
.catlist button:hover{color:var(--accent-ink)}
.catlist .count{color:var(--muted);font-variant-numeric:tabular-nums}
.popular{display:flex;flex-direction:column;gap:16px}
.mini{display:grid;grid-template-columns:72px minmax(0,1fr);gap:14px;align-items:center;background:none;border:0;padding:0;text-align:left}
.mini .pic{width:72px;height:72px}
.mini b{font-family:var(--display);font-size:16px;line-height:1.3;display:block}
.mini small{color:var(--muted)}
.mini:hover b{color:var(--accent-ink)}

/* Bản tin */
.news{background:var(--soft);margin-top:40px;text-align:center}
.news .wrap{max-width:620px;padding-block:60px}
.news h2{font-size:32px;margin:8px 0}
.news p{color:var(--muted);margin:0 auto 24px;max-width:52ch}
.news form{display:flex;max-width:460px;margin:0 auto;border:1px solid var(--ink);background:var(--bg)}
.news input{flex:1;min-width:0;border:0;padding:13px 14px;background:transparent;outline:none}
.ok{display:inline-flex;gap:10px;align-items:center;border:1px solid var(--accent);padding:12px 22px;color:var(--accent-ink);font-weight:500;background:var(--bg)}

/* Dải ảnh cuộn ngang */
.strip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(120px,1fr);overflow-x:auto;scrollbar-width:none}
.strip::-webkit-scrollbar{display:none}
.strip > div{aspect-ratio:1/1;min-width:120px}

footer{background:var(--dark);color:var(--on-dark)}
footer .wrap{padding-block:34px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:11px;letter-spacing:.15em;text-transform:uppercase}
footer .logo{font-family:var(--display);font-style:italic;text-transform:none;letter-spacing:0;font-size:22px}
footer a{text-transform:none;letter-spacing:.05em;border-bottom:1px solid currentColor}
footer a:hover{color:inherit}

/* Trang Blogs: du lịch có trách nhiệm */
.rt-hero .box{margin:40px 0;padding:34px 44px;max-width:min(620px,92%)}
.rt-hero h1{font-size:clamp(34px,5vw,52px);font-style:italic;font-weight:500;line-height:1.15;margin:10px 0}
.rt-hero p{color:var(--muted);margin:0}
.intro{max-width:700px;margin:56px auto 64px;font-size:16.5px}
.intro p{margin:0 0 18px}
.intro p:last-child{margin:0}
.pull{margin:34px 0;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-family:var(--display);font-style:italic;font-size:clamp(22px,3vw,30px);line-height:1.4;text-align:center;color:var(--accent-ink)}
.guides-wrap{max-width:900px;margin:0 auto}
.guides-wrap .sec-title{margin-bottom:24px}
.pills{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:36px}
.pill{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:6px 16px;font-size:13px}
.pill:hover{border-color:var(--ink)}
.pill.on{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.g{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:30px;align-items:center;padding-bottom:30px;margin-bottom:30px;border-bottom:1px solid var(--line)}
.g .pic{aspect-ratio:4/3;max-width:100%;display:block}
.g .txt{grid-column:span 2;min-width:0}
.g h3{font-size:23px;line-height:1.25;margin:6px 0 8px}
.g h3 a:hover{color:var(--accent-ink)}
.g p{color:var(--muted);margin:0 0 14px}
.else{max-width:520px;margin:60px auto;text-align:center}
.else h3{font-size:26px;font-style:italic;font-weight:500;margin-bottom:16px}
.rt-about{background:var(--soft);text-align:center;padding:50px 24px;margin-bottom:60px}
.rt-about h2{font-size:clamp(26px,3.4vw,34px);font-style:italic;font-weight:500;margin:8px 0 12px}
.rt-about p{color:var(--muted);max-width:60ch;margin:0 auto 22px}

/* Trang đọc bài */
.reader{position:fixed;inset:0;z-index:50;background:var(--bg);overflow-y:auto;padding-bottom:env(safe-area-inset-bottom,0px)}
.reader .bar{position:sticky;top:0;z-index:2;background:var(--veil);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
.reader .bar .wrap{display:flex;justify-content:space-between;align-items:center;padding-block:10px}
.reader .bar .btn{padding:8px 18px}
.reader .bar .logo{font-family:var(--display);font-style:italic;font-size:22px}
.progress{height:2px;background:var(--accent);width:0}
.article{max-width:720px;margin:0 auto;padding-block:44px 70px}
.article > .label{display:block;text-align:center}
.article h1{font-size:clamp(32px,5vw,48px);line-height:1.15;text-align:center;margin:12px 0}
.article .meta{text-align:center;color:var(--muted);font-size:14px}
.article .cover{aspect-ratio:16/9;margin:30px 0;max-width:100%}
.article .lede{font-size:18px;color:var(--muted);font-style:italic;margin:0 0 22px}
.article .sec h2{font-size:26px;margin:32px 0 10px}
.article .sec p{margin:0 0 16px;font-size:16.5px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:8px 0 24px}
.gallery > div{aspect-ratio:4/3}

/* Câu chuyện trong bài */
.stories{display:flex;flex-direction:column;gap:48px;margin:36px 0 12px}
.st-k{color:var(--accent-ink)}
.st-where{font-size:13px;color:var(--muted)}
.st-t{margin:0;font-size:16px;white-space:pre-line}
.st-head{display:flex;flex-direction:column;gap:10px}
.st-head .st-where{padding-bottom:10px;border-bottom:1px solid var(--line)}

.st-split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:28px;align-items:center}
.st-split .imgs{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
.st-split .imgs > div{aspect-ratio:1/1}
.st-split .imgs > div:first-child{grid-column:span 2;aspect-ratio:4/3}
.st-split.flip .imgs{order:2}
.st-split h3{font-size:26px;text-wrap:pretty}

.st-full{display:flex;flex-direction:column;gap:18px}
.st-full .st-head{max-width:680px}
.st-full h3{font-size:30px;text-wrap:pretty}
.st-full .imgs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.st-full .imgs > div{aspect-ratio:1/1}
.st-full .imgs > div:first-child{grid-column:span 2;grid-row:span 2;aspect-ratio:auto;min-height:320px}

.st-mosaic{display:flex;flex-direction:column;gap:14px;background:var(--soft);padding:28px;margin:0 -28px}
.st-mosaic .top{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:20px 32px;align-items:end}
.st-mosaic .top > div{display:flex;flex-direction:column;gap:8px}
.st-mosaic h3{font-size:44px;line-height:1.05}
.st-mosaic .imgs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:minmax(70px,9vw);gap:8px}
.st-mosaic .imgs > div:nth-child(1){grid-column:1 / span 4;grid-row:span 3}
.st-mosaic .imgs > div:nth-child(2){grid-column:5 / span 2;grid-row:span 2}
.st-mosaic .imgs > div:nth-child(3){grid-column:5 / span 2;grid-row:span 1}
.st-mosaic .imgs > div:nth-child(4){grid-column:1 / span 2;grid-row:span 2}
.st-mosaic .imgs > div:nth-child(5){grid-column:3 / span 2;grid-row:span 2}
.st-mosaic .imgs > div:nth-child(6){grid-column:5 / span 2;grid-row:span 2}
.st-mosaic .imgs > div:nth-child(7){grid-column:1 / span 6;grid-row:span 2}

.closing{display:flex;flex-direction:column;gap:28px;margin:56px 0 12px}
.closing .wide{aspect-ratio:21/9;max-width:100%}
.closing .txt{display:flex;flex-direction:column;align-items:center;gap:16px;max-width:640px;margin:0 auto;text-align:center}
.closing .rule{width:40px;height:1px;background:var(--accent-ink)}
.closing p{margin:0;font-family:var(--display);font-size:21px;line-height:1.6;font-style:italic}
.tip{background:var(--soft);padding:20px 24px;margin-top:28px;display:flex;flex-direction:column;gap:4px}
.related{margin-top:56px}
.related .sec-title{margin-bottom:24px}
.related .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:22px}
.related .card{display:flex;flex-direction:column;gap:10px;background:none;border:0;padding:0;text-align:left}
.related .card .pic{aspect-ratio:4/3;width:100%}
.related .card b{font-family:var(--display);font-size:18px;line-height:1.3}
.related .card:hover b{color:var(--accent-ink)}

@media (max-width:640px){
  .hero-box{min-height:400px}
  .hero-box .box{padding:24px}
  .topbar .wrap{justify-content:center}
  .nav .wrap{gap:0 16px;font-size:11px;letter-spacing:.1em;padding-left:max(12px,env(safe-area-inset-left,0px));padding-right:max(12px,env(safe-area-inset-right,0px))}
  .nav button{padding:13px 0}
  .brand{padding-block:26px 20px}
  aside{min-width:0;flex-basis:100%}
  .g .txt{grid-column:auto}
  .st-mosaic{margin:0 -20px;padding:22px 20px}
  .st-mosaic h3{font-size:34px}
  .st-full .imgs > div:first-child{min-height:220px}
  .nav .wrap{position:relative}
  .dd{position:static}
  .menu{left:max(16px,env(safe-area-inset-left,0px));right:max(16px,env(safe-area-inset-right,0px));transform:none;width:auto;min-width:0;max-width:none;max-height:70vh;overflow-y:auto;grid-template-columns:1fr}
  .menu .col + .col{border-left:0;border-top:1px solid var(--line);margin-top:8px;padding-top:8px}
  .menu button{white-space:normal}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}