:root {
  --ink: #15232b;
  --teal: #1f4e5f;
  --teal-d: #143642;
  --gold: #b8925a;
  --gold-l: #ead9bd;
  --cream: #f7f3ec;
  --paper: #ffffff;
  --line: #e6dfd3;
  --muted: #66707a;
  --hot: #b5452f;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 35, 43, .08);
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Be Vietnam Pro', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --wrap: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--cream); line-height: 1.6; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.eyebrow { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin-bottom: .6em; display: block; }
section { padding: 72px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; }
.section-head p { max-width: 560px; margin: 0; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem; border: 1.5px solid transparent; cursor: pointer; transition: .2s; font-family: var(--sans); }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #a37f49; }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-d); }
.btn-line { border-color: currentColor; }
.btn-line:hover { background: rgba(255,255,255,.12); }
.btn svg { width: 18px; height: 18px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(247,243,236,.94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo svg { width: 40px; height: 40px; flex: none; }
.logo-text { line-height: 1; }
.logo-text b { font-family: var(--serif); font-size: 1.25rem; letter-spacing: .02em; display: block; color: var(--teal); }
.logo-text small { font-size: .62rem; letter-spacing: .32em; color: var(--gold); font-weight: 600; }
.nav { display: flex; gap: 26px; font-size: .93rem; font-weight: 500; }
.nav a { padding: 6px 0; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav a:hover, .nav a.active { color: var(--teal); border-color: var(--gold); }
.header-cta { display: flex; gap: 10px; align-items: center; }
.header-cta .btn { padding: 9px 16px; font-size: .88rem; }
.menu-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-toggle svg { width: 26px; height: 26px; }

/* Hero */
.hero { position: relative; min-height: 78vh; display: flex; align-items: flex-end; color: #fff; padding: 0; overflow: hidden; }
.hero img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,25,32,.15) 0%, rgba(10,25,32,.55) 55%, rgba(10,25,32,.88) 100%); }
.hero .wrap { position: relative; z-index: 1; padding-bottom: 64px; padding-top: 120px; }
.hero p.lead { font-size: 1.15rem; max-width: 620px; opacity: .92; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.hero-stats { display: flex; gap: 36px; margin-top: 40px; flex-wrap: wrap; }
.hero-stats div b { font-family: var(--serif); font-size: 2rem; display: block; color: var(--gold-l); }
.hero-stats div span { font-size: .85rem; opacity: .85; }

.hero-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: end; }
.hero-split h1 { font-size: clamp(2.6rem, 6vw, 4.8rem); line-height: 1.05; }
.hero-split .lead { font-size: 1.35rem; color: var(--gold-l); font-weight: 600; opacity: 1; }
.hero-photo { margin: 0; border-radius: 18px; overflow: hidden; border: 3px solid rgba(234,217,189,.65); box-shadow: 0 24px 60px rgba(0,0,0,.45); background: #111; }
.hero-photo img { width: 100%; aspect-ratio: 5/4; object-fit: cover; object-position: 50% 35%; }
.hero-photo figcaption { font-size: .82rem; padding: 10px 14px; background: rgba(10,25,32,.9); color: var(--gold-l); letter-spacing: .04em; }
@media (max-width: 860px) { .hero-split { grid-template-columns: 1fr; gap: 28px; } .hero-photo { max-width: 460px; } }
.page-hero { background: var(--teal-d); color: #fff; padding: 64px 0 48px; position: relative; overflow: hidden; }
.page-hero.has-img img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .35; }
.page-hero .wrap { position: relative; }
.crumbs { font-size: .85rem; opacity: .8; margin-bottom: 12px; }
.crumbs a:hover { text-decoration: underline; }

/* Cards */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--paper); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; display: flex; flex-direction: column; }
.card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(20,35,43,.14); }
.card .thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: #ddd; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card h3 { font-size: 1.12rem; margin: 0; }
.badges { position: absolute; top: 12px; left: 12px; display: flex; gap: 6px; }
.badge { font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 4px 9px; border-radius: 6px; background: var(--teal); color: #fff; }
.badge.gold { background: var(--gold); }
.badge.hot { background: var(--hot); }
.badge.right { position: absolute; top: 12px; right: 12px; left: auto; }
.specs { display: flex; gap: 14px; font-size: .86rem; color: var(--muted); flex-wrap: wrap; }
.specs span { display: inline-flex; align-items: center; gap: 5px; }
.specs svg { width: 16px; height: 16px; }
.price { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; color: var(--teal); margin-top: auto; padding-top: 8px; }
.price small { font-family: var(--sans); font-size: .78rem; color: var(--muted); font-weight: 500; }
.card .meta { font-size: .86rem; color: var(--muted); }

.project-card .body { gap: 10px; }
.project-card dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 4px 0 0; font-size: .88rem; }
.project-card dt { color: var(--muted); }
.project-card dd { margin: 0; font-weight: 500; }
.project-card .foot { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-top: 12px; margin-top: auto; }

/* Why / features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature { background: var(--paper); border-radius: var(--radius); padding: 28px; border: 1px solid var(--line); }
.feature .ico { width: 46px; height: 46px; border-radius: 12px; background: var(--gold-l); color: var(--teal); display: grid; place-items: center; margin-bottom: 14px; }
.feature .ico svg { width: 24px; height: 24px; }

.band { background: var(--teal-d); color: #fff; }
.band .eyebrow { color: var(--gold-l); }
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.split img { border-radius: var(--radius); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.check { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 10px; }
.check li { padding-left: 28px; position: relative; }
.check li::before { content: ''; position: absolute; left: 0; top: 7px; width: 14px; height: 8px; border-left: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(-45deg); }

.gallery-strip { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: 220px 220px; gap: 12px; }
.gallery-strip img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.gallery-strip img:first-child { grid-row: span 2; }

/* Filters */
.filters { background: var(--paper); border-radius: var(--radius); padding: 16px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; box-shadow: var(--shadow); margin-bottom: 28px; }
.filters select { font-family: var(--sans); font-size: .92rem; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--cream); min-width: 160px; }
.filters .count { margin-left: auto; font-size: .9rem; color: var(--muted); }
.empty { text-align: center; padding: 60px 20px; color: var(--muted); }

/* Unit detail */
.detail { display: grid; grid-template-columns: 1.55fr 1fr; gap: 32px; align-items: start; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tab { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); font-family: var(--sans); font-size: .9rem; cursor: pointer; font-weight: 500; }
.tab.active { background: var(--teal); color: #fff; border-color: var(--teal); }
.viewer { background: var(--paper); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.viewer .stage { aspect-ratio: 16/11; background: #0e1b21; display: grid; place-items: center; position: relative; }
.viewer .stage img { width: 100%; height: 100%; object-fit: contain; }
.viewer .stage.free { aspect-ratio: auto; display: block; background: var(--paper); }
.viewer .stage.free .inv-title { border-radius: 0; }
.viewer .stage.free .inv-stage { border-radius: 0; }
.viewer .stage.free .inv-map img { height: auto; object-fit: initial; }
.viewer .caption { padding: 12px 16px; font-size: .9rem; color: var(--muted); border-top: 1px solid var(--line); }
.thumbs { display: flex; gap: 8px; padding: 12px; overflow-x: auto; }
.thumbs button { flex: none; width: 92px; height: 66px; border-radius: 8px; overflow: hidden; border: 2px solid transparent; padding: 0; cursor: pointer; background: #ddd; }
.thumbs button.active { border-color: var(--gold); }
.thumbs img { width: 100%; height: 100%; object-fit: cover; }
.placeholder { color: #cfd6d9; text-align: center; padding: 30px; }
.placeholder b { display: block; color: #fff; font-size: 1.05rem; margin-bottom: 6px; }

.panel { background: var(--paper); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; position: sticky; top: 92px; }
.panel h1 { font-size: 1.7rem; margin-bottom: 4px; }
.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border-radius: 10px; overflow: hidden; margin: 16px 0; }
.kv div { background: var(--cream); padding: 10px 12px; }
.kv span { display: block; font-size: .75rem; color: var(--muted); }
.kv b { font-size: .98rem; }
.pay { display: grid; gap: 8px; margin: 12px 0 18px; }
.pay div { display: flex; justify-content: space-between; align-items: baseline; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); }
.pay div.best { border-color: var(--gold); background: #fbf6ee; }
.pay b { font-family: var(--serif); font-size: 1.15rem; color: var(--teal); }
.pay span { font-size: .88rem; }
.note { font-size: .8rem; color: var(--muted); }
.panel .btn { width: 100%; justify-content: center; margin-top: 8px; }

/* Giỏ hàng trực quan */
.inv-projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.inv-projects button { font-family: var(--sans); padding: 14px; border-radius: 12px; border: 1.5px solid var(--line); background: var(--paper); font-weight: 600; font-size: 1rem; cursor: pointer; color: var(--ink); }
.inv-projects button small { display: block; font-weight: 500; color: var(--muted); font-size: .78rem; }
.inv-projects button.active { border-color: var(--teal); background: var(--teal); color: #fff; }
.inv-projects button.active small { color: var(--gold-l); }
.inv-bar { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.inv-bar .tabs { margin: 0; }
.tab:disabled { opacity: .4; cursor: default; }
.tab small { font-weight: 400; opacity: .75; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-family: var(--sans); font-size: .82rem; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--cream); cursor: pointer; }
.chip.active { background: var(--gold); border-color: var(--gold); color: #fff; }
.chip:disabled { opacity: .45; cursor: default; }
.chip small { opacity: .75; }
.inv-title { background: var(--teal-d); color: #fff; padding: 12px 18px; border-radius: 12px 12px 0 0; font-family: var(--serif); font-size: 1.15rem; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.inv-title span { font-family: var(--sans); font-size: .82rem; color: var(--gold-l); }
.inv-stage { position: relative; display: grid; grid-template-columns: 190px 1fr 190px; gap: 14px; background: #0f2128; padding: 14px; border-radius: 0 0 12px 12px; }
.inv-stage.single { grid-template-columns: 1fr; }
.inv-stage.single .inv-col { display: none; }
.inv-col { display: flex; flex-direction: column; gap: 8px; justify-content: center; position: relative; z-index: 2; }
.inv-map { position: relative; align-self: center; }
.inv-map img { width: 100%; border-radius: 8px; }
.inv-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; }
.inv-lines path { fill: none; stroke: #e2533a; stroke-width: 1.6; opacity: .85; }
.inv-lines path.hl { stroke: var(--gold-l); stroke-width: 2.6; opacity: 1; }
.pin { position: absolute; transform: translate(-50%, -50%); width: 22px; height: 22px; border-radius: 50%; background: #e2533a; color: #fff; font-size: .68rem; font-weight: 700; display: grid; place-items: center; border: 2px solid #fff; box-shadow: 0 2px 6px rgba(0,0,0,.4); z-index: 3; transition: transform .15s; }
.pin.hl, .pin.big { transform: translate(-50%, -50%) scale(1.35); background: var(--gold); }
.pin.big { width: 30px; height: 30px; font-size: 0; }
.pin.big::after { content: ''; position: absolute; inset: -10px; border-radius: 50%; border: 3px solid var(--gold); animation: ring 1.8s infinite; }
.callout { display: block; background: #fff; border-radius: 6px; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,.3); font-size: .78rem; line-height: 1.3; transition: transform .15s; border: 2px solid transparent; }
.callout.hl { transform: scale(1.04); border-color: var(--gold); }
.callout .code { display: flex; align-items: center; gap: 6px; background: var(--teal); color: #fff; padding: 5px 8px; font-size: .86rem; letter-spacing: .03em; }
.callout .code i, .num { font-style: normal; background: #e2533a; color: #fff; border-radius: 50%; min-width: 18px; height: 18px; display: inline-grid; place-items: center; font-size: .65rem; }
.callout .money { display: block; padding: 4px 8px 0; color: #d1442c; font-family: var(--serif); font-size: 1.15rem; font-weight: 700; }
.callout .money small { font-size: .75rem; }
.callout .dt { display: block; padding: 2px 8px 6px; color: var(--muted); font-size: .72rem; }
.inv-table { margin-top: 18px; background: var(--paper); border-radius: 12px; box-shadow: var(--shadow); overflow-x: auto; }
.inv-table table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 760px; }
.inv-table th, .inv-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.inv-table th { background: var(--cream); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.inv-table th.sort { cursor: pointer; color: var(--teal); }
.inv-table .r { text-align: right; }
.inv-table tr.hl td { background: #fbf3e6; }
.inv-table .go { color: var(--gold); font-weight: 600; }
@media (max-width: 960px) {
  .inv-stage { grid-template-columns: 1fr; }
  .inv-map { order: -1; }
  .inv-col { display: grid; grid-template-columns: repeat(2, 1fr); }
  .inv-lines { display: none; }
}
@media (max-width: 560px) {
  .inv-projects button { padding: 10px 6px; font-size: .9rem; }
  .pin { width: 18px; height: 18px; font-size: .58rem; }
}

/* About */
.about-photo { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/5; background: #ddd; }
.about-photo img { width: 100%; height: 100%; object-fit: cover; }
.quote { font-family: var(--serif); font-size: 1.35rem; line-height: 1.5; border-left: 3px solid var(--gold); padding-left: 18px; margin: 24px 0; }

/* Blog */
.wrap.narrow { max-width: 880px; }
.post-head { padding: 48px 0 24px; }
.post-head h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin-top: 6px; }
.post-meta { display: flex; align-items: center; gap: 12px; font-size: .88rem; color: var(--muted); }
.post-meta img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }
.post-meta b { color: var(--ink); }
.post-cover { margin: 0; border-radius: var(--radius); overflow: hidden; background: #ddd; }
.post-cover img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.post-cover figcaption { font-size: .8rem; color: var(--muted); background: var(--paper); padding: 8px 14px; }
.post-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; max-width: 1080px; }
.post-aside { position: sticky; top: 96px; }
.post-aside h3 { font-size: 1.15rem; }
.prose { font-size: 1.05rem; line-height: 1.75; min-width: 0; }
.prose .lead { font-size: 1.18rem; color: var(--teal-d); }
.prose h2 { font-size: clamp(1.35rem, 2.6vw, 1.75rem); margin-top: 1.8em; scroll-margin-top: 90px; }
.prose a:not(.btn) { color: var(--teal); text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 3px; }
.prose .check { margin: 0 0 1em; }
.toc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin: 24px 0; font-size: .95rem; }
.toc ol { margin: 8px 0 0; padding-left: 20px; display: grid; gap: 4px; }
.callout-box { background: #fbf6ee; border-left: 3px solid var(--gold); border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 0 0 1em; font-size: .97rem; }
.post-table { width: 100%; border-collapse: collapse; margin: 0 0 1em; background: var(--paper); border-radius: 10px; overflow: hidden; font-size: .97rem; }
.post-table td { padding: 10px 14px; border-bottom: 1px solid var(--line); }
.post-table td:last-child { text-align: right; font-family: var(--serif); font-weight: 700; color: var(--teal); white-space: nowrap; }
.post-card h3 { font-size: 1.15rem; }
.more { color: var(--gold); font-weight: 600; font-size: .92rem; }
.post-card .more { margin-top: auto; padding-top: 6px; }
@media (max-width: 960px) {
  .post-layout { grid-template-columns: 1fr; gap: 28px; }
  .post-aside { position: static; }
}

/* Footer */
.site-footer { background: var(--ink); color: #c9d1d4; padding: 56px 0 28px; font-size: .93rem; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.site-footer h4 { color: #fff; font-family: var(--serif); font-size: 1.05rem; margin: 0 0 14px; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer .logo-text b { color: #fff; }
.socials { display: flex; gap: 10px; margin-top: 14px; }
.socials a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.08); display: grid; place-items: center; }
.socials a:hover { background: var(--gold); }
.socials svg { width: 18px; height: 18px; fill: #fff; }
.legal { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 20px; font-size: .8rem; color: #8d999e; }

/* Floating contact */
.float { position: fixed; right: 18px; bottom: 22px; z-index: 60; display: grid; gap: 12px; }
.float a { width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; box-shadow: 0 8px 20px rgba(0,0,0,.25); color: #fff; position: relative; }
.float a.zalo { background: #0068ff; font-weight: 800; font-size: .78rem; letter-spacing: .02em; }
.float a.call { background: var(--gold); animation: ring 2.4s infinite; }
.float a svg { width: 24px; height: 24px; }
@keyframes ring { 0%, 100% { box-shadow: 0 0 0 0 rgba(184,146,90,.55); } 60% { box-shadow: 0 0 0 14px rgba(184,146,90,0); } }

/* Responsive */
@media (max-width: 1180px) {
  .header-cta .btn-line { display: none; }
  .nav { gap: 20px; }
}
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .detail { grid-template-columns: 1fr; }
  .panel { position: static; }
  .nav { display: none; }
  .menu-toggle { display: block; }
  .nav.open { display: flex; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--cream); border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
  .nav.open a { padding: 12px 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 860px) {
  .grid-3, .grid-4, .features { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .site-footer .cols { grid-template-columns: 1fr; gap: 28px; }
  .gallery-strip { grid-template-columns: 1fr 1fr; grid-template-rows: 200px 140px 140px; }
  .gallery-strip img:first-child { grid-column: span 2; grid-row: auto; }
}
@media (max-width: 560px) {
  section { padding: 52px 0; }
  .wrap { padding: 0 16px; }
  .grid-3, .grid-4, .features { grid-template-columns: 1fr; }
  .header-cta .btn-gold span { display: none; }
  .hero { min-height: 86vh; }
  .hero-stats { gap: 22px; }
  .filters select { flex: 1 1 140px; min-width: 0; }
  .filters .count { margin-left: 0; width: 100%; }
  .kv { grid-template-columns: 1fr 1fr; }
}