:root{
  --river:#0c2a26; --river-2:#123a33; --paper:#f5f4ef; --surface:#ffffff; --ink:#14211e; --muted:#5a6863; --line:#e1e3dc;
  --apricot:#f39a2b; --apricot-ink:#b5600b; --leaf:#3ea34f; --on-river:#eef4f1; --on-river-muted:#a9c0b8; --glow:#ffc27a;
  --display:"Noto Serif Display",Georgia,serif; --body:"Be Vietnam Pro",system-ui,-apple-system,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0a1715; --surface:#12221f; --ink:#e9f0ed; --muted:#a2b3ad; --line:#24372f; --apricot-ink:#ffae5c; --river:#08201c; --river-2:#0f2e28; color-scheme:dark}}
:root[data-theme="dark"]{--paper:#0a1715; --surface:#12221f; --ink:#e9f0ed; --muted:#a2b3ad; --line:#24372f; --apricot-ink:#ffae5c; --river:#08201c; --river-2:#0f2e28; color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--river)}
img{max-width:100%}
[hidden]{display:none!important}
.in{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.14;text-wrap:balance;margin:0}
h2{font-size:clamp(28px,5vw,42px)}
h2 em{font-style:italic;color:var(--apricot-ink)}
.river h2 em{color:var(--glow)}
.kick{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--apricot-ink)}
.river .kick{color:var(--apricot)}
section{scroll-margin-top:64px}
.band{padding-block:64px}
.river{background:var(--river);color:var(--on-river)}
.river p,.river .muted{color:var(--on-river-muted)}
.muted{color:var(--muted)}
.fine{font-size:13px;margin-top:20px}
a{color:inherit}
/* top bar */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--river);color:var(--on-river)}
.top .in{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:9px}
.brand{font-family:var(--display);font-size:19px;display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{height:42px;width:auto;display:block;background:#fff;border-radius:8px;padding:3px}
.brand small{display:block;font-family:var(--body);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--on-river-muted)}
.top nav{display:flex;gap:18px;font-size:14px}
.top nav a{color:var(--on-river);text-decoration:none;opacity:.85}
.top nav a:hover{opacity:1}
@media (max-width:820px){.top nav{display:none}}
.btn{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:600;font-size:15px;border-radius:999px;padding:12px 20px;text-decoration:none;border:0;cursor:pointer}
.btn-a{background:var(--apricot);color:#1d1206}
.btn-a:hover{filter:brightness(1.06)}
.btn-o{background:transparent;color:var(--on-river);box-shadow:inset 0 0 0 1.5px var(--on-river-muted)}
.btn-l{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--apricot);outline-offset:3px}
/* hero */
.hero{position:relative;color:#fff;background:var(--river)}
.hero > img{display:block;width:100%;height:min(80vh,720px);min-height:480px;object-fit:cover;object-position:58% 50%}
.hero .shade{position:absolute;left:0;right:0;bottom:0;height:42%;background:linear-gradient(180deg,rgba(5,22,19,0) 0%,rgba(5,22,19,.55) 55%,rgba(5,22,19,.82) 100%)}
.hero .cap{position:absolute;left:0;right:0;bottom:0;padding-bottom:30px;text-align:center}
.hero h1{font-size:clamp(40px,8vw,76px);font-weight:500}
.hero .sub{margin-top:6px;font-size:17px;color:#eef4f1}
.hero .who{margin-top:4px;font-family:var(--display);font-size:clamp(20px,3.6vw,28px);color:var(--apricot)}
.facts{display:grid;grid-template-columns:repeat(4,1fr)}
.facts div{padding:18px 12px 18px 0}
.facts b{display:block;font-family:var(--display);font-size:clamp(22px,4vw,32px);font-weight:500;font-variant-numeric:lining-nums}
.facts span{font-size:13px;color:var(--on-river-muted)}
@media (max-width:640px){.facts{grid-template-columns:repeat(2,1fr)}}
/* intro */
.intro{padding-block:44px 8px}
.intro p{max-width:58ch;margin:14px 0 20px;font-size:17px}
.row{display:flex;gap:10px;flex-wrap:wrap}
/* projects */
.proj{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;min-width:0;text-decoration:none;color:inherit;transition:transform .25s,box-shadow .25s}
.pcard:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.08)}
.pcard img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover}
.pcard .b{padding:16px 18px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcard .tag{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.pcard h3{font-size:23px}
.pcard .big{font-family:var(--display);font-size:24px;color:var(--apricot-ink);font-variant-numeric:lining-nums}
.pcard p{margin:0;font-size:15px;color:var(--muted)}
.pcard .go{margin-top:auto;padding-top:10px;font-weight:600;font-size:15px;color:var(--apricot-ink)}
@media (max-width:900px){.proj{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.proj{grid-template-columns:1fr}}
/* featured unit */
.unit{display:grid;grid-template-columns:1.15fr 1fr;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:28px}
.unit img{display:block;width:100%;height:100%;min-height:260px;object-fit:cover}
.unit .b{padding:26px 26px 28px;display:flex;flex-direction:column;gap:8px}
.unit h3{font-size:28px}
.unit ul{margin:6px 0 10px;padding-left:18px;color:var(--muted);font-size:15px;display:grid;gap:3px}
@media (max-width:760px){.unit{grid-template-columns:1fr}.unit img{aspect-ratio:16/10;min-height:0;height:auto}}
/* services */
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.14);margin-top:30px}
.svc > div{background:var(--river);padding:24px 22px 26px 0}
.svc > div + div{padding-left:22px}
.svc h3{font-size:23px;margin:6px 0 6px}
.svc p{margin:0;font-size:15px}
.svc i{font-style:normal;font-family:var(--display);font-size:22px;color:var(--apricot)}
@media (max-width:760px){.svc{grid-template-columns:1fr}.svc > div,.svc > div + div{padding:20px 0}}
/* past projects */
.past{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.past span{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px}
/* guides */
.guide{list-style:none;margin:24px 0 0;padding:0;border-top:1px solid var(--line)}
.guide li{border-bottom:1px solid var(--line)}
.guide a{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:16px 0;text-decoration:none}
.guide b{display:block;font-size:17px}
.guide span{display:block;font-size:14px;color:var(--muted)}
.guide em{font-style:normal;color:var(--apricot-ink);font-size:20px}
/* advisor */
.adv{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.adv .ph{position:relative;border-radius:16px;overflow:hidden;background:var(--line);max-width:440px}
.adv .ph > img{display:block;width:100%;aspect-ratio:2/3;object-fit:cover;object-position:center 20%}
.adv .ph::after{content:"";position:absolute;left:0;right:0;bottom:0;height:38%;background:linear-gradient(to top,rgba(5,22,19,.78),rgba(5,22,19,0));pointer-events:none}
.adv .ph .badge{position:absolute;left:16px;bottom:14px;z-index:1}
.adv .ph .badge img{height:64px;width:auto;display:block;background:#fff;border-radius:10px;padding:4px}
.adv h2 small{display:block;font-family:var(--body);font-size:15px;font-weight:600;color:var(--apricot-ink);letter-spacing:.04em;margin-top:8px}
.adv ul{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:14px}
.adv li{position:relative;padding-left:24px}
.adv li::before{content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;background:var(--apricot)}
.adv li b{display:block}
.adv li span{color:var(--muted);font-size:15px}
.adv .wall{margin-top:22px;border-radius:14px;overflow:hidden;max-width:420px}
.adv .wall img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:820px){.adv{grid-template-columns:1fr;gap:26px}.adv .ph{max-width:none}.adv .ph > img{aspect-ratio:4/5}}
/* form */
.lead{max-width:660px}
.lead form{margin-top:22px;display:grid;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px}
.lead label{display:grid;gap:6px;font-size:14px;font-weight:600}
.lead label span{font-weight:400;color:var(--muted)}
.lead input,.lead select,.lead textarea{font:inherit;font-size:16px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:12px 14px;width:100%}
.lead textarea{min-height:84px;resize:vertical}
.lead input:focus,.lead select:focus,.lead textarea:focus{outline:2px solid var(--apricot);outline-offset:1px;border-color:transparent}
.lead .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.lead .two{grid-template-columns:1fr}}
.lead .chips{display:flex;flex-wrap:wrap;gap:8px}
.lead .chips label{display:inline-flex;align-items:center;gap:6px;font-weight:500;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:8px 14px;cursor:pointer}
.lead .chips input{width:auto;margin:0;accent-color:var(--apricot)}
.lead .hp{position:absolute;left:-9999px}
.lead .note{font-size:13px;color:var(--muted)}
.lead .msg{border-radius:12px;padding:12px 14px;font-size:15px}
.lead .msg.ok{background:#e3f1e8;color:#1d5a34}.lead .msg.err{background:#fbe6e0;color:#8a2f17}
.gl{font-size:14px;font-weight:600;margin-bottom:8px}.gl span{font-weight:400;color:var(--muted)}
/* contact */
.contact{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.phone{font-family:var(--display);font-size:clamp(34px,6vw,54px);letter-spacing:.02em;user-select:all;color:var(--glow);margin-top:18px}
.contact .row{margin-top:18px}
.visit{display:grid;gap:14px}
.visit div{border-left:2px solid var(--apricot);padding-left:14px}
.visit b{display:block;color:var(--on-river)}
@media (max-width:820px){.contact{grid-template-columns:1fr}}
footer{background:var(--river);color:var(--on-river-muted);font-size:13px;padding-block:22px 96px;border-top:1px solid rgba(255,255,255,.1)}
@media (min-width:821px){footer{padding-block:22px}}
.callbar{position:fixed;left:0;right:0;bottom:0;z-index:25;background:var(--river);display:none;gap:8px;padding:10px max(12px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px));box-shadow:0 -6px 20px rgba(0,0,0,.18)}
.callbar a{flex:1}
@media (max-width:820px){.callbar{display:flex}}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:8px 14px;border-radius:999px;font-size:14px;z-index:50}

/* ---- trang dự án ---- */
.past a{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;text-decoration:none;color:var(--ink)}
.past a::after{content:" →";color:var(--apricot-ink)}
.past a:hover{border-color:var(--apricot)}
.phero{position:relative;background:var(--river);color:#fff}
.phero > img{display:block;width:100%;height:min(70vh,640px);min-height:380px;object-fit:cover}
.phero .shade{position:absolute;left:0;right:0;bottom:0;height:45%;background:linear-gradient(180deg,rgba(5,22,19,0) 0%,rgba(5,22,19,.6) 55%,rgba(5,22,19,.85) 100%)}
.phero .cap{position:absolute;left:0;right:0;bottom:0;padding-bottom:26px;text-align:center}
.phero h1{font-size:clamp(32px,6.5vw,60px);font-weight:500}
.phero .sub{margin-top:6px;font-size:16px;color:#eef4f1}
.phero.noimg .in{padding-block:56px 44px}
.phero.noimg .kick{color:var(--apricot)}
.phero.noimg h1{margin-top:10px}
.phero.noimg .sub{color:var(--on-river-muted)}
.pgrid{display:grid;grid-template-columns:1.3fr 1fr;gap:44px;align-items:start}
.pgrid > *{min-width:0}
@media (max-width:820px){.pgrid{grid-template-columns:1fr;gap:28px}}
.back{font-size:14px;color:var(--muted);text-decoration:none}
.lead-p{font-size:18px;margin:12px 0 0;max-width:60ch}
.pgrid h3{font-size:22px}
.pts{margin:12px 0 0;padding-left:20px;display:grid;gap:6px;color:var(--muted)}
.note-box{margin-top:24px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--apricot);border-radius:12px;padding:14px 16px;font-size:15px}
.facts2{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:6px 18px}
.facts2 div{padding:12px 0;border-bottom:1px solid var(--line)}
.facts2 div:last-child{border-bottom:0}
.facts2 dt{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.facts2 dd{margin:2px 0 0;font-size:16px}
.pgal{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}
.pgal button{padding:0;border:0;background:var(--surface);border-radius:12px;overflow:hidden;cursor:zoom-in;text-align:left;font:inherit;color:var(--muted)}
.pgal img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}
.pgal span{display:block;padding:8px 10px;font-size:13px}
@media (max-width:760px){.pgal{grid-template-columns:repeat(2,1fr)}}
.pnav{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pnav a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;font-weight:600;min-width:0}
.pnav a span{display:block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.pnav .nx{text-align:right;grid-column:2}
.ph-empty{aspect-ratio:16/10;background:var(--river);color:var(--on-river-muted);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:22px;padding:16px;text-align:center}
.river a{color:inherit}
.phone a{color:inherit;text-decoration:none}
#lb{position:fixed;inset:0;z-index:40;background:rgba(4,14,12,.95);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:calc(env(safe-area-inset-top,0px) + 14px) max(14px,env(safe-area-inset-right,0px)) calc(env(safe-area-inset-bottom,0px) + 14px) max(14px,env(safe-area-inset-left,0px))}
#lb[hidden]{display:none}
#lb img{max-width:100%;max-height:calc(100% - 70px);object-fit:contain;border-radius:6px}
#lb .bar{display:flex;gap:10px;align-items:center;color:#eef4f1;font-size:14px;text-align:center}
#lb button{font:inherit;background:rgba(255,255,255,.14);color:#fff;border:0;border-radius:999px;padding:8px 14px;cursor:pointer}

.art{max-width:760px}
.art-img{display:block;width:100%;border-radius:14px;margin-top:18px;max-height:420px;object-fit:cover}
.art-body{margin-top:18px;font-size:17px}
.art-body h2{font-size:clamp(22px,4vw,28px);margin:28px 0 8px}
.art-body ul,.art-body ol{padding-left:22px;display:grid;gap:6px}
.art-body table{width:100%;border-collapse:collapse;font-size:15px;margin:10px 0;display:block;overflow-x:auto}
.art-body th,.art-body td{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left}
.art-body th{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.guide li a{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:16px 0;text-decoration:none;color:var(--ink)}
.guide li a b{display:block;font-size:17px}
.guide li a span{display:block;font-size:14px;color:var(--muted)}
.guide li a em{font-style:normal;color:var(--apricot-ink);font-size:20px}