/* =====================================================================
   THEME "INK & STONE" – tuanhbds.com (20/10/2026)
   Nạp SAU site.css. Muốn đổi màu toàn site: chỉ sửa khối :root bên dưới.
   ===================================================================== */
:root{
  --bg:#FAF8F4;--card:#FFFFFF;--ink:#101826;--muted:#5D6472;--line:#E6E1D8;
  --accent:#8A6830;--soft:#F2EEE7;--dark:#0B111C;--navy:#101826;--gold:#C9A46A;
  --foot:#0B111C;--foot2:#101826;--ok:#2F7D5B;--warn:#B7862B;--bad:#B4483C;
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --sans:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  --r:6px
}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.08}
h1{font-size:clamp(40px,6.4vw,72px)}
h2{font-size:clamp(32px,4.4vw,48px);margin-bottom:.45em}
h3,h4{font-family:var(--sans);font-weight:600;letter-spacing:-.005em;line-height:1.35}
h3{font-size:20px}
.eyebrow{font-size:12px;letter-spacing:.2em;font-weight:600;color:var(--accent)}
section{padding:88px 0}
@media(max-width:700px){section{padding:60px 0}body{font-size:16.5px}}
.wrap{max-width:1180px;padding:0 24px}
@media(max-width:700px){.wrap{padding:0 16px}}
a{color:var(--accent);text-underline-offset:3px}
.muted{color:var(--muted)}
.num,.tnum,.price{font-variant-numeric:tabular-nums lining-nums}
.num{font-family:var(--serif);font-weight:600}

/* Nút */
.btn{border-radius:var(--r);padding:14px 24px;font-size:15px;letter-spacing:.01em;font-weight:600;border-width:1.5px}
.btn.pri{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.pri:hover{filter:none;background:#1d2a40}
.btn.sec{color:var(--ink);border-color:var(--ink)}
.btn.sec:hover{background:var(--ink);color:#fff}
.btn svg{width:18px;height:18px;fill:currentColor;flex:0 0 18px}
.btn.zl{background:#0068FF;border-color:#0068FF;color:#fff}
.btn.wa{background:#1FA855;border-color:#1FA855;color:#fff}
.btn.zl:hover,.btn.wa:hover{filter:brightness(1.07)}

/* Thẻ */
.card{border-radius:var(--r);border-color:var(--line);box-shadow:none}
.card.post img{border-radius:0}
.box{border-radius:var(--r);background:var(--soft)}
.alt{background:var(--card)}
.tag{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600}

/* Thanh menu */
nav.bar{background:rgba(250,248,244,.94);border-bottom:1px solid var(--line)}
nav.bar .wrap{height:72px}
.logo{font-family:var(--serif);font-size:26px;font-weight:600;letter-spacing:.01em}
.logo span{color:var(--accent)!important}
.menu{gap:26px;font-size:14.5px;font-weight:500}
.menu a.on{color:var(--accent)}
nav.bar .btn.pri{padding:10px 18px!important;font-size:14px}
.ddm .in{border-radius:var(--r);box-shadow:0 18px 48px rgba(16,24,38,.12)}
.ico{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;vertical-align:-3px}
.ddt .ico.chev{width:12px;height:12px;margin-left:2px}
.lang{border-radius:var(--r);gap:6px;font-weight:600;letter-spacing:.04em}
.burger{border-radius:var(--r);color:var(--ink)}
.burger .ico{width:22px;height:22px}
.burger .x{display:none}.burger[aria-expanded="true"] .x{display:block}.burger[aria-expanded="true"] .b{display:none}

/* Đầu trang chủ cũ + đầu trang dự án */
.hero,.phero{background:var(--navy)}
.hero .btn.pri,.phero .btn.pri{background:#fff;border-color:#fff;color:var(--ink)}
.hero .btn.sec,.phero .btn.sec{color:#fff;border-color:rgba(255,255,255,.7)}
.hero .btn.sec:hover,.phero .btn.sec:hover{background:#fff;color:var(--ink)}
.hero h1 em{color:var(--gold)}
.phero h1{font-size:clamp(44px,7vw,84px)}

/* Hiệu ứng "rèm": ảnh đứng yên, nội dung trượt lên che ảnh */
.phero.cur{position:sticky;top:0;z-index:0;min-height:min(88vh,860px);display:flex;align-items:flex-end;padding:120px 0 64px;
  background:var(--navy) center/cover no-repeat;background-image:linear-gradient(180deg,rgba(11,17,28,.15) 0%,rgba(11,17,28,.35) 45%,rgba(11,17,28,.88) 100%),var(--hero)}
.phero.cur .wrap{width:100%}
.phero.cur .lead{color:#E9E4DA;max-width:640px}
.phero.cur .crumb,.phero.cur .crumb a{color:#CFC8BA}
.phero.cur .chk{display:block;margin-top:18px;font-size:13px;color:#CFC8BA;letter-spacing:.02em}
.phero.cur~section,.phero.cur~footer,.phero.cur~div.sheet{position:relative;z-index:1}
.phero.cur~section{background:var(--bg)}.phero.cur~section.alt{background:var(--card)}
@media(max-width:700px){.phero.cur{min-height:76vh;padding:96px 0 36px}}

/* Mục lục dính */
nav.toc{position:sticky;top:72px;z-index:15;background:rgba(250,248,244,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav.toc .wrap{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding-top:10px;padding-bottom:10px}
nav.toc .wrap::-webkit-scrollbar{display:none}
nav.toc a{flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:13.5px;font-weight:500;color:var(--ink);text-decoration:none;border:1px solid transparent}
nav.toc a:hover,nav.toc a.on{border-color:var(--line);background:#fff}
[id]{scroll-margin-top:140px}

/* Thẻ "đọc trong 10 giây" */
.qf{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff;border-radius:var(--r)}
.qf>div{padding:22px 22px 20px;border-left:1px solid var(--line)}.qf>div:first-child{border-left:0}
.qf small{display:block;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:6px}
.qf b{display:block;font-family:var(--serif);font-size:30px;font-weight:600;line-height:1.1}
.qf span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.5}
@media(max-width:860px){.qf{grid-template-columns:1fr 1fr}.qf>div:nth-child(3){border-left:0}.qf>div:nth-child(n+3){border-top:1px solid var(--line)}}

/* Bảng thông số */
.facts td{padding:14px 0;border-bottom:1px solid var(--line)}
.facts td:first-child{color:var(--muted);font-weight:500;font-size:15px}
.stamp{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:14px}
.stamp:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok)}

/* Giá theo loại căn + chuyển tiền tệ */
.fx{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:#fff;margin:6px 0 22px}
.fx button{border:0;background:none;font:inherit;font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;cursor:pointer;color:var(--muted)}
.fx button.on{background:var(--ink);color:#fff}
.units{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.unit{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;flex-direction:column;gap:4px}
.unit .ty{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--muted)}
.unit .pr{font-family:var(--serif);font-size:34px;font-weight:600;line-height:1.15;color:var(--ink);margin:6px 0 2px}
.unit .pr small{font-family:var(--sans);font-size:13px;font-weight:500;color:var(--muted)}
.unit .sp{display:flex;gap:14px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.unit .sp b{color:var(--ink);font-weight:600}
.unit .code{font-size:12px;color:var(--muted);margin-top:8px}
.unit .act{display:flex;gap:8px;margin-top:14px}
.unit .act a{flex:1;justify-content:center;padding:10px 12px;font-size:13.5px}
.lbl{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:4px 9px;border-radius:3px;background:var(--soft);color:var(--accent);align-self:flex-start}
.lbl.rare{background:#F6E9E6;color:var(--bad)}
.unit img{margin:-22px -22px 14px;width:calc(100% + 44px);max-width:none;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r) var(--r) 0 0}
.shot{font-size:11.5px;color:var(--muted)}

/* Ưu / Nhược */
.pc{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pc>div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 26px 14px}
.pc>div.con{border-top:3px solid var(--warn)}.pc>div.pro{border-top:3px solid var(--ok)}
.pc ul{padding-left:18px;margin:10px 0}.pc li{margin-bottom:10px}
@media(max-width:760px){.pc{grid-template-columns:1fr}}

/* Pháp lý dạng đèn */
.legal{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.legal td{padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top;font-size:15.5px}
.legal tr:last-child td{border-bottom:0}
.legal td:first-child{width:46%;font-weight:500}
.dot{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:13.5px;white-space:nowrap}
.dot:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--ok)}
.dot.y{color:var(--warn)}.dot.y:before{background:var(--warn)}
.dot.r{color:var(--bad)}.dot.r:before{background:var(--bad)}
.dot.g{color:var(--ok)}
.legal .ref{display:block;font-size:13.5px;color:var(--muted);margin-top:3px}
@media(max-width:640px){.legal td{display:block;width:100%!important;border-bottom:0;padding:4px 16px}.legal tr{display:block;border-bottom:1px solid var(--line);padding:12px 0}}

/* Dòng thời gian tiến độ */
.tl{list-style:none;margin:0;padding:0;border-left:1px solid var(--line);margin-left:6px}
.tl li{position:relative;padding:0 0 22px 26px}
.tl li:before{content:"";position:absolute;left:-6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--ink)}
.tl li.f:before{background:var(--bg);border:1.5px solid var(--ink);box-sizing:border-box}
.tl time{display:block;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.tl li.f{color:var(--muted)}

/* Video "Hỏi Tú Anh" */
.yt{position:relative;aspect-ratio:16/9;background:#000 center/cover;border-radius:var(--r);overflow:hidden;cursor:pointer}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt .pl{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.45))}
.yt .pl span{width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center}
.yt .pl span:after{content:"";border-left:20px solid var(--ink);border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.chap{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chap button{font:inherit;font-size:14px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 16px;cursor:pointer;color:var(--ink)}
.chap button:hover,.chap button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.chap button i{font-style:normal;color:var(--muted);margin-right:6px;font-size:12.5px}
.chap button:hover i,.chap button.on i{color:#CFC8BA}

/* Thư viện ảnh */
.gal{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.gal figure{margin:0;grid-column:span 2}.gal figure:nth-child(1),.gal figure:nth-child(2){grid-column:span 3}
.gal img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r)}
.gal figcaption{font-size:13px;color:var(--muted);margin-top:6px}
@media(max-width:700px){.gal{grid-template-columns:1fr 1fr}.gal figure,.gal figure:nth-child(1),.gal figure:nth-child(2){grid-column:span 1}}

/* FAQ */
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-weight:400;font-size:22px;line-height:1;color:var(--muted)}
details[open] summary:after{content:"–"}

/* Footer */
footer.ft{background:var(--foot);color:#C9CED6}
.ft h4{font-family:var(--sans);font-size:13px;letter-spacing:.18em;font-weight:600}
.ft h4:after{background:var(--gold);height:2px;width:40px}
.ft .me img{border:2px solid rgba(201,164,106,.5)}
.ft .send{border-radius:var(--r);border-width:1.5px}
.ft input,.ft textarea{border-radius:var(--r)}
.ft .qc{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.ft .qc .btn{justify-content:center}
.ftb{padding-bottom:28px}

/* Nút liên hệ nổi: máy tính = cột phải; điện thoại = thanh dưới cùng */
.fl{right:18px;bottom:20px;gap:10px}
.fl a{width:auto;height:auto;border-radius:999px;padding:12px 18px 12px 14px;gap:8px;font-size:14px;font-weight:600;border:0;box-shadow:0 8px 24px rgba(11,17,28,.22);animation:none!important}
.fl a svg{width:20px;height:20px}
.fl .z{background:#0068FF}.fl .w{background:#1FA855}.fl .p{background:var(--ink)}
@media(max-width:760px){
  .fl{left:0;right:0;bottom:0;flex-direction:row;gap:0;background:#fff;border-top:1px solid var(--line);padding:8px 8px calc(8px + env(safe-area-inset-bottom))}
  .fl a{flex:1;justify-content:center;border-radius:var(--r);margin:0 4px;box-shadow:none;padding:12px 6px}
  body{padding-bottom:72px}
  .ftb{padding-bottom:28px}
}
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:var(--r);font-size:14px;z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.25);max-width:92vw;text-align:center}

/* Trang chủ mới */
.hx{position:relative;min-height:min(92vh,880px);display:flex;align-items:flex-end;color:#fff;background:var(--navy) center/cover no-repeat;
  background-image:linear-gradient(180deg,rgba(11,17,28,.25) 0%,rgba(11,17,28,.45) 50%,rgba(11,17,28,.92) 100%),var(--hero);padding:140px 0 56px}
.hx .wrap{width:100%}
.hx h1{color:#fff;max-width:900px}.hx h1 em{font-style:italic;color:var(--gold)}
.hx p.lead{font-size:19px;color:#E9E4DA;max-width:640px;margin:18px 0 0}
.hx .cta{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 0}
.hx .ver{margin-top:22px;font-size:13.5px;color:#CFC8BA}.hx .ver a{color:#fff}
.finder{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18)}
.finder a{color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:8px 16px;font-size:14px}
.finder a:hover{background:#fff;color:var(--ink)}
.finder b{width:100%;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:#CFC8BA;font-weight:600}
.feat{display:grid;grid-template-columns:1.4fr 1fr;gap:16px}
.feat .side{display:grid;gap:16px}
.fc{position:relative;display:block;border-radius:var(--r);overflow:hidden;color:#fff;text-decoration:none;min-height:260px;background:var(--navy) center/cover}
.fc:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,17,28,0) 35%,rgba(11,17,28,.85) 100%)}
.fc .in{position:absolute;left:0;right:0;bottom:0;padding:24px}
.fc .t{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:#E2D3B5;font-weight:600}
.fc h3{font-family:var(--serif);font-size:34px;font-weight:600;color:#fff;margin:4px 0 4px}
.fc p{margin:0;font-size:14.5px;color:#E9E4DA}
.feat>.fc{min-height:540px}
@media(max-width:860px){.feat{grid-template-columns:1fr}.feat>.fc{min-height:380px}}
.areas{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.area{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.area h3{font-family:var(--serif);font-size:26px;margin-bottom:10px}
.area a{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid var(--line);color:var(--ink);text-decoration:none;font-weight:500}
.area a small{color:var(--muted);font-weight:400;font-size:13px;text-align:right}
.area a:hover{color:var(--accent)}
.strip{display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 24px}
.strip img{width:72px;height:72px;border-radius:50%;object-fit:cover}
.strip p{margin:0;font-size:15px;color:var(--muted)}.strip b{color:var(--ink)}
@media(max-width:700px){.strip{grid-template-columns:auto 1fr}.strip .btn{grid-column:1/-1;justify-content:center}}
.pledge{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pledge div{border-top:1px solid var(--ink);padding-top:16px}
.pledge b{display:block;font-family:var(--serif);font-size:24px;font-weight:600;margin-bottom:4px}
.pledge p{margin:0;color:var(--muted);font-size:15px}
@media(max-width:760px){.pledge{grid-template-columns:1fr}}
.more{margin-top:10px}.more summary{font-size:14px;color:var(--accent);font-weight:600}.more summary:after{content:""}

/* ===== Video (20/10/2026) ===== */
.phero.cur{isolation:isolate;overflow:hidden}
.phero.cur .bgv{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.phero.cur:has(.bgv):after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(11,17,28,.25) 0%,rgba(11,17,28,.4) 45%,rgba(11,17,28,.9) 100%)}
@media(prefers-reduced-motion:reduce){.phero.cur .bgv{display:none}}
.vp{display:grid;grid-template-columns:1.7fr 1fr;gap:20px;align-items:start}
.vmain video{width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--r);display:block;object-fit:contain}
.vlist{display:flex;flex-direction:column;gap:10px}
.vlist button{display:grid;grid-template-columns:120px 1fr;gap:12px;align-items:center;text-align:left;font:inherit;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:8px;cursor:pointer;color:var(--ink)}
.vlist button img{width:120px;aspect-ratio:16/9;object-fit:cover;border-radius:4px}
.vlist button b{display:block;font-size:14.5px;font-weight:600;line-height:1.35}
.vlist button small{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.4}
.vlist button.on{border-color:var(--ink);box-shadow:inset 3px 0 0 var(--ink)}
@media(max-width:860px){.vp{grid-template-columns:1fr}.vlist{flex-direction:row;overflow-x:auto;scrollbar-width:none}.vlist button{flex:0 0 260px}}
.reels{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
@media(max-width:860px){.reels{grid-template-columns:repeat(4,72%);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}.reels .reel{scroll-snap-align:start}}
.vthumb{position:relative;display:block;padding:0;border:0;background:#000;cursor:pointer;border-radius:var(--r);overflow:hidden;font:inherit;color:#fff;text-align:left;width:100%}
.vthumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.vthumb:hover img{transform:scale(1.03)}
.vthumb i{position:absolute;left:50%;top:50%;width:58px;height:58px;margin:-29px 0 0 -29px;border-radius:50%;background:rgba(255,255,255,.92)}
.vthumb i:after{content:"";position:absolute;left:23px;top:18px;border-left:16px solid var(--ink);border-top:11px solid transparent;border-bottom:11px solid transparent}
.reel{aspect-ratio:9/16}
.reel:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 55%,rgba(0,0,0,.75) 100%)}
.reel span{position:absolute;left:14px;right:14px;bottom:12px;z-index:1}
.reel b{display:block;font-size:14.5px;font-weight:600;line-height:1.3}
.reel small{display:block;font-size:12px;color:#ddd;margin-top:3px}
.evtc{display:grid;grid-template-columns:minmax(260px,1fr) 1.3fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:var(--r);padding:20px}
.evtc .vthumb{aspect-ratio:16/9}
.evtc h3{font-family:var(--serif);font-size:30px;margin:2px 0 8px}
@media(max-width:760px){.evtc{grid-template-columns:1fr}}
.vmodal{border:0;padding:0;background:transparent;max-width:min(92vw,980px);width:auto;overflow:visible}
.vmodal::backdrop{background:rgba(11,17,28,.88)}
.vmodal video{display:block;max-width:min(92vw,980px);max-height:82vh;border-radius:var(--r);background:#000}
.vmodal p{color:#ddd;font-size:14px;margin:10px 0 0;text-align:center}
.vmodal .vx{position:absolute;top:-44px;right:0;width:38px;height:38px;border-radius:50%;border:0;background:#fff;color:var(--ink);font-size:24px;line-height:1;cursor:pointer}