:root{--bg:#0b1220;--card:#121b2e;--line:#22304d;--txt:#e8eefc;--mut:#93a3c4;--acc:#3ea6ff;--acc2:#22c55e;--tg:#17212b}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Khmer",sans-serif}
html[lang=km] body{font-family:"Noto Sans Khmer",system-ui,sans-serif;line-height:1.75}
a{color:var(--acc)}
.wrap{max-width:1040px;margin:0 auto;padding-left:20px;padding-right:20px}
.c{text-align:center}
header{position:sticky;top:0;z-index:10;background:rgba(11,18,32,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.logo{font-weight:800;font-size:20px;letter-spacing:-.3px}.logo b{color:var(--acc2)}
.nav nav{display:flex;gap:18px;align-items:center}
.nav nav a{color:var(--mut);text-decoration:none;font-size:14px}.nav nav a:hover{color:var(--txt)}
.lang{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang button{background:none;border:0;color:var(--mut);padding:6px 10px;cursor:pointer;font:inherit;font-size:13px}
.lang button.on{background:var(--acc);color:#04111f;font-weight:700}
.btn{display:inline-block;background:var(--acc);color:#04111f;font-weight:700;padding:13px 24px;border-radius:10px;text-decoration:none;border:0;cursor:pointer;font:inherit;font-weight:700}
.hero{padding-top:56px;padding-bottom:24px;text-align:center}
.hero h1,.hero .sub{max-width:720px;margin-left:auto;margin-right:auto}
h1{font-size:clamp(30px,6vw,52px);line-height:1.12;margin:0 0 16px;letter-spacing:-1px}
html[lang=km] h1{letter-spacing:0;line-height:1.4}
.sub{color:var(--mut);font-size:clamp(16px,2.4vw,19px);margin:0 auto 26px}
.pill{display:inline-block;border:1px solid var(--line);color:var(--acc2);border-radius:99px;padding:3px 12px;font-size:13px;margin-bottom:16px}
section{padding:44px 0}
h2{font-size:clamp(24px,3.5vw,32px);margin:0 0 8px;letter-spacing:-.5px}
.lead{color:var(--mut);margin:0 0 24px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--mut);font-size:15px}
.num{width:30px;height:30px;border-radius:50%;background:var(--acc);color:#04111f;font-weight:800;display:grid;place-items:center;margin-bottom:10px}
/* phone demo */
#demo h2,#demo .lead,#how h2,#how .lead{text-align:center}
.phone{width:100%;max-width:440px;margin:0 auto;background:var(--tg);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.ph-top{background:#1c2733;padding:12px 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid #0e1621}
.av{width:34px;height:34px;border-radius:50%;background:var(--acc);color:#04111f;font-weight:800;display:grid;place-items:center}
.ph-top b{display:block;font-size:15px}.ph-top small{color:var(--mut);font-size:12px}
.msgs{padding:12px 10px;height:520px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;scroll-behavior:smooth}
.msg{background:#182533;border-radius:12px 12px 12px 4px;padding:9px 11px;max-width:98%;font-size:14px;line-height:1.45;align-self:flex-start;word-break:break-word}
.msg.me{background:#2b5278;border-radius:12px 12px 4px 12px;align-self:flex-end;max-width:85%}
.msg pre{margin:6px 0;font:12px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#0e1621;border-radius:8px;padding:8px 10px;overflow-x:auto;white-space:pre;max-width:100%}
.kbrow{display:flex;gap:4px;margin-top:4px}
.kbrow button{flex:1;min-width:0;min-height:40px;display:flex;align-items:center;justify-content:center;text-align:center;background:#243447;color:var(--acc);border:0;border-radius:8px;padding:6px 4px;font:inherit;font-size:13.5px;line-height:1.2;cursor:pointer}
.kbrow button:not(:only-child){white-space:nowrap;font-size:13px}
.kbrow button:active{background:#2e445c}
.msg .kbs{margin-top:6px}
.bar{background:#1c2733;border-top:1px solid #0e1621;padding:8px 10px 10px}
.barlbl{color:var(--mut);font-size:11.5px;margin:2px 2px 4px}
.chips{display:flex;gap:6px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;margin-bottom:4px}
.chips button{flex:0 0 auto;background:#243447;color:var(--txt);border:0;border-radius:99px;padding:7px 12px;font:inherit;font-size:13px;cursor:pointer;white-space:nowrap}
.chips button.q{border:1px solid #2f4764}
.chips button:active{background:var(--acc);color:#04111f}
.disc{color:var(--mut);font-size:13px;margin:12px auto 0;text-align:center;max-width:620px}
/* pricing */
.price{max-width:460px;margin:0 auto;text-align:center}
.beta{background:rgba(34,197,94,.12);border:1px solid var(--acc2);color:var(--acc2);border-radius:10px;padding:8px 12px;margin-bottom:16px;font-weight:600}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:14px}
.seg button{background:none;border:0;color:var(--mut);padding:8px 18px;cursor:pointer;font:inherit;font-size:14px}
.seg button.on{background:var(--acc);color:#04111f;font-weight:700}
.amt{font-size:52px;font-weight:800;line-height:1.1}
.per{display:block;font-size:15px;color:var(--mut);margin-top:4px}
.badge{display:inline-block;margin-top:8px;color:var(--acc2);font-size:13px;font-weight:700;min-height:1px}
.badge:empty{display:none}
.pnote{color:var(--mut);font-size:14px;margin:8px 0 0}
.price ul{list-style:none;padding:0;margin:16px 0 20px;text-align:left}
.price li{padding:6px 0 6px 26px;position:relative;color:var(--mut)}.price li:before{content:"✓";position:absolute;left:0;color:var(--acc2);font-weight:800}
.pafter{color:var(--mut);font-size:13px;margin:14px 0 0}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--mut);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.hide{display:none!important}
@media(max-width:820px){.nav nav .lnk{display:none}.hero{padding-top:36px}}
@media(max-width:380px){.wrap{padding-left:16px;padding-right:16px}.amt{font-size:44px}.msg pre{font-size:11.5px}}
.msg{white-space:pre-line}
.msg pre{white-space:pre}
.brand{color:var(--mut);font-size:12px;margin-top:6px}
.hproof{color:var(--mut);font-size:13.5px;margin:16px auto 0}
.msgs{height:560px}
.msg:not(.me){min-width:88%}
.disc.top{margin:0 auto 16px}
/* demo bottom bar: Telegram-style START button + hotel-name input */
#start-btn{width:100%;background:#3390ec;color:#fff;border:0;border-radius:8px;padding:12px;font:inherit;font-weight:700;font-size:15px;letter-spacing:1px;cursor:pointer}
#start-btn:hover{background:#4aa0f2}
.inputbar{display:flex;gap:8px;align-items:center}
#demo-q{flex:1;min-width:0;background:#243447;border:0;border-radius:20px;padding:10px 14px;color:var(--txt);font:inherit;font-size:14px;outline:none}
#demo-q::placeholder{color:var(--mut)}
#demo-send{width:40px;height:40px;flex:0 0 auto;background:#3390ec;color:#fff;border:0;border-radius:50%;font-size:15px;cursor:pointer}
#demo-send:hover{background:#4aa0f2}

.pick{position:fixed;inset:0;background:rgba(5,9,18,.72);z-index:50;display:flex;align-items:flex-start;justify-content:center;padding:12vh 16px 16px}
.pick-card{position:relative;width:100%;max-width:420px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 18px 18px;max-height:76vh;overflow:auto}
.pick-card h3{margin:0 28px 12px 0;font-size:18px}
.pick-x{position:absolute;right:10px;top:8px;background:none;border:0;color:var(--mut);font-size:28px;line-height:1;cursor:pointer;padding:4px 8px}
.pick-card input{width:100%;box-sizing:border-box;background:#0b1220;color:var(--txt);border:1px solid var(--line);border-radius:10px;padding:12px;font:inherit;font-size:16px}
.pick-card input:focus{outline:2px solid var(--acc);border-color:var(--acc)}
.pick-hint{color:var(--mut);font-size:13px;margin:8px 0 0}
#pick-list button,#pick-req button,.pick-btn{display:block;width:100%;text-align:left;background:#243447;color:var(--txt);border:0;border-radius:10px;padding:11px 12px;margin-top:8px;font:inherit;font-size:15px;cursor:pointer}
#pick-list button small{display:block;color:var(--mut);font-size:12px;margin-top:2px}
#pick-req button.c{text-align:center;color:var(--acc)}
#pick-req p{margin:12px 0 0;font-size:14px}
.pick-btn{text-align:center;color:#06210f;background:var(--acc2);font-weight:700;text-decoration:none;box-sizing:border-box}
.pick-skip{display:block;text-align:center;margin-top:14px;color:var(--mut);font-size:13.5px}

/* four questions (B2) */
#four h2,#four .lead{text-align:center}
.fq{grid-template-columns:repeat(2,1fr)}
.fq .ftag{color:var(--acc);font-size:13px;font-weight:700;letter-spacing:.5px;margin-bottom:8px}
html[lang=km] .fq .ftag{letter-spacing:0}
.fq .card h3{font-size:clamp(16px,2.2vw,18px);line-height:1.35;margin:0 0 10px}
html[lang=km] .fq .card h3{line-height:1.65}
.fq .card ul{list-style:none;margin:0;padding:0}
.fq .card li{position:relative;padding:4px 0 4px 22px;color:var(--mut);font-size:14.5px}
.fq .card li:before{content:"✓";position:absolute;left:2px;color:var(--acc2);font-weight:800}
@media(max-width:820px){.fq{grid-template-columns:1fr}}