/* Sun Reaches — Trang chủ "World" (v1)
   Phong cách: nền tối, cam hổ phách + xanh dương, hạt mạng lưới, cuộn ngang ghim, con trỏ riêng. */
:root{
  --bg:#090D16; --bg-soft:#0D1424; --panel:#121B2E; --panel-2:#060911;
  --text:#F3F6FB; --text-soft:#9AA8BE; --accent:#F5A623; --accent-2:#FF8F4D;
  --accent-soft:rgba(245,166,35,.20); --on-accent:#241605;
  --blue:#2E9BE0; --blue-soft:rgba(46,155,224,.20); --green:#22B573;
  --border:rgba(255,255,255,.10); --shadow:0 20px 46px rgba(0,0,0,.45); --maxw:1160px;
  --font:"Be Vietnam Pro","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
::selection{background:var(--accent);color:var(--on-accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--on-accent);padding:10px 16px;border-radius:8px;z-index:2000;font-weight:700}
.skip:focus{left:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.noise{position:fixed;inset:0;z-index:4;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
 background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
#progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent),var(--blue));z-index:1200}


#soundToggle{position:fixed;left:22px;bottom:22px;z-index:900;width:46px;height:46px;border-radius:50%;border:1px solid var(--border);background:var(--panel);color:var(--text);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:transform .2s,border-color .2s}
#soundToggle:hover{transform:scale(1.08);border-color:var(--accent)}
#soundToggle.on{border-color:var(--accent);color:var(--accent)}

#sideNav{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:900;display:flex;flex-direction:column;gap:14px}
#sideNav a{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);display:block;position:relative;transition:background .3s,transform .3s}
#sideNav a::after{content:attr(data-label);position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:12px;font-weight:600;color:var(--text);background:var(--panel);border:1px solid var(--border);padding:5px 10px;border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s;box-shadow:var(--shadow)}
#sideNav a:hover::after{opacity:1}
#sideNav a.active{background:var(--accent);transform:scale(1.5)}
@media (max-width:1100px){#sideNav{display:none}}

/* nav */
header.nav{position:fixed;top:0;left:0;right:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 24px;background:rgba(9,13,22,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
header.nav.scrolled{border-color:var(--border);box-shadow:0 2px 20px rgba(0,0,0,.35)}
header.nav .logo img{height:30px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{font-size:14px;font-weight:600;color:var(--text-soft);text-decoration:none;padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-cta{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--on-accent);padding:10px 20px;border-radius:999px;font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--panel);color:var(--text);align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:currentColor;position:relative;border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .25s}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger[aria-expanded=true] span{background:transparent}
.burger[aria-expanded=true] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded=true] span::after{transform:translateY(-6px) rotate(-45deg)}
#mobileMenu{display:none;position:fixed;inset:0;z-index:990;background:rgba(6,9,17,.97);padding:84px 24px 32px;overflow:auto}
#mobileMenu.open{display:block}
#mobileMenu a{display:block;padding:14px 4px;font-size:19px;font-weight:700;text-decoration:none;border-bottom:1px solid var(--border)}
#mobileMenu .sub{font-size:15px;font-weight:600;color:var(--text-soft);padding:10px 4px 10px 16px}
@media (max-width:1020px){.nav-links{display:none}.burger{display:flex}}
@media (max-width:520px){header.nav{padding:10px 14px}.nav-cta{padding:9px 14px;font-size:13px}}

section{position:relative;padding:112px 0}
.center{text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);display:inline-block}
h1,h2,h3,h4{line-height:1.24;margin:0 0 16px;color:var(--text)}
h1{font-size:clamp(32px,5.4vw,60px);font-weight:800;letter-spacing:-.015em}
h2{font-size:clamp(26px,3.6vw,42px);font-weight:800;letter-spacing:-.012em}
p{line-height:1.72;color:var(--text-soft);font-size:17px;margin:0 0 14px}
.lead{font-size:19px;max-width:660px;margin:0 auto 8px}
.reveal{opacity:0;transform:translateY(38px) scale(.98);filter:blur(4px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1),filter .8s ease}
.reveal.in{opacity:1;transform:none;filter:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:15.5px;text-decoration:none;border:0;cursor:pointer;font-family:inherit;transition:transform .15s ease-out,box-shadow .2s,background .2s}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--on-accent);box-shadow:0 8px 24px rgba(245,166,35,.3)}
.btn-primary.pulse{animation:pulseGlow 2.4s ease-in-out infinite}
@keyframes pulseGlow{0%,100%{box-shadow:0 8px 20px rgba(245,166,35,.35)}50%{box-shadow:0 8px 36px rgba(245,166,35,.65)}}
.btn-outline{background:rgba(255,255,255,.04);color:var(--text);border:1.5px solid var(--border)}
.btn-outline:hover{border-color:var(--accent)}
.btn-sm{padding:10px 18px;font-size:14px}
.ctas{display:flex;gap:14px;flex-wrap:wrap}
.center .ctas{justify-content:center}

/* HERO */
#hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:110px 0 70px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden;background:var(--bg)}
#worldCanvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.aura{position:absolute;left:50%;top:44%;width:900px;height:900px;margin:-450px 0 0 -450px;background:conic-gradient(from 0deg,rgba(245,166,35,.22),rgba(46,155,224,.22),rgba(34,181,115,.16),rgba(245,166,35,.22));opacity:.7;filter:blur(90px);animation:spin 40s linear infinite;border-radius:50%;mix-blend-mode:screen}
@keyframes spin{to{transform:rotate(360deg)}}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;mix-blend-mode:screen;will-change:transform}
.blob1{width:520px;height:520px;left:-120px;top:-100px;background:radial-gradient(circle,var(--blue-soft),transparent 70%);animation:drift1 16s ease-in-out infinite}
.blob2{width:460px;height:460px;right:-140px;bottom:-120px;background:radial-gradient(circle,var(--accent-soft),transparent 70%);animation:drift2 18s ease-in-out infinite}
.blob3{width:320px;height:320px;right:12%;top:8%;background:radial-gradient(circle,rgba(34,181,115,.2),transparent 70%);animation:drift3 14s ease-in-out infinite}
@keyframes drift1{50%{transform:translate(40px,30px)}}
@keyframes drift2{50%{transform:translate(-30px,-40px)}}
@keyframes drift3{50%{transform:translate(-25px,25px)}}
.float-icon{position:absolute;font-size:28px;opacity:0;animation:floatIn 1s ease forwards,floatY 6s ease-in-out infinite;filter:drop-shadow(0 6px 14px rgba(0,0,0,.5))}
@keyframes floatIn{to{opacity:.9}}
@keyframes floatY{50%{transform:translateY(-16px)}}
.hero-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center}
#hero .mark{width:60px;height:60px;margin-bottom:22px}
#hero h1{max-width:900px}
.grad{background:linear-gradient(90deg,var(--accent),#ff8a3d,var(--blue),var(--accent));background-size:250% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:250% center}}
#hero .lead{max-width:680px}
.cycler-line{margin-top:20px;display:inline-flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600;color:var(--text-soft);background:var(--panel);border:1px solid var(--border);padding:8px 18px 8px 14px;border-radius:999px;box-shadow:var(--shadow)}
.cycler-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:blip 1.6s ease-in-out infinite;flex:none}
@keyframes blip{50%{opacity:.4;transform:scale(.7)}}
#cycler{display:inline-block;font-weight:800;color:var(--text);transition:opacity .25s,transform .25s;min-width:150px;text-align:left}
#cycler.swap{opacity:0;transform:translateY(6px)}
#hero .ctas{margin-top:30px;justify-content:center}
.hero-trust{margin:26px 0 0;padding:0;list-style:none;display:flex;gap:10px 22px;flex-wrap:wrap;justify-content:center;font-size:13.5px;color:var(--text-soft)}
.hero-trust li::before{content:"✓";color:var(--green);font-weight:800;margin-right:7px}
.scroll-cue{margin-top:36px;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-soft);font-size:13px;animation:bob 2s ease-in-out infinite}
.scroll-cue .line{width:1px;height:34px;background:linear-gradient(var(--text-soft),transparent)}
@keyframes bob{50%{transform:translateY(8px)}}

/* marquee */
.marquee{background:var(--panel-2);overflow:hidden;padding:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.marquee-track{display:flex;width:max-content;gap:40px;animation:marquee 46s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track a{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;display:flex;align-items:center;gap:40px;text-decoration:none}
.marquee-track a:hover{color:var(--accent)}
.marquee-track em{color:var(--accent);font-style:normal;margin-right:6px}
.marquee-track .sep{color:var(--accent)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* stats */
#stats{padding:76px 0;background:var(--panel-2)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .num{font-size:clamp(34px,4.4vw,54px);font-weight:800}
.stat .num .suf{color:var(--accent)}
.stat .lbl{margin-top:6px;font-size:14px;color:var(--text-soft)}

/* definition (GEO) */
#what{background:var(--bg)}
.def-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.def-grid h2{margin-bottom:20px}
.def-card{background:var(--panel);border:1px solid var(--border);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.def-card ul{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.def-card li{display:flex;gap:14px;align-items:flex-start;font-size:15.5px;color:var(--text-soft);line-height:1.55}
.def-card li b{color:var(--text)}
.def-card li i{flex:none;width:34px;height:34px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-style:normal;font-size:17px}

/* pain */
#pain{background:var(--bg-soft)}
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.pain-card{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:28px 22px;transition:transform .3s,box-shadow .3s,border-color .3s}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(217,83,79,.45)}
.pain-card .x{width:38px;height:38px;border-radius:50%;background:rgba(217,83,79,.15);color:#FF7E7A;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:16px}
.pain-card h3{font-size:17px;margin-bottom:8px}
.pain-card p{font-size:15px;margin:0}
.pain-arrow{text-align:center;margin:44px 0 0;color:var(--accent);font-size:20px;font-weight:700}

/* pillars */
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px;perspective:1200px}
.sol-card{border-radius:20px;padding:30px 24px;background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .25s ease-out,border-color .25s;transform-style:preserve-3d}
.sol-card:hover{border-color:rgba(255,255,255,.24)}
.sol-card .icon{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:23px;margin-bottom:18px}
.sol-card:nth-child(1) .icon{background:var(--blue-soft)}
.sol-card:nth-child(2) .icon{background:var(--accent-soft)}
.sol-card:nth-child(3) .icon{background:rgba(34,181,115,.18)}
.sol-card:nth-child(4) .icon{background:rgba(155,89,246,.18)}
.sol-card h3{font-size:18px}
.sol-card p{font-size:15px;margin:0}

/* worlds pinned */
#worlds{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 100%);padding-bottom:0}
.worlds-pin{position:relative}
.worlds-sticky{display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.world-rail{display:flex;gap:24px;padding:20px 6vw 10px;will-change:transform;perspective:1200px}
.world-card{flex:0 0 310px;position:relative;overflow:hidden;background:var(--panel);border:1px solid var(--border);border-radius:22px;padding:30px 24px 24px;display:flex;flex-direction:column;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .2s ease-out,border-color .25s,box-shadow .25s;transform-style:preserve-3d}
.world-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--ca)}
.world-card:hover{border-color:var(--ca);box-shadow:0 22px 48px rgba(var(--ca-rgb),.35)}
.world-card:nth-child(6n+1){--ca:#F5A623;--ca-rgb:245,166,35}
.world-card:nth-child(6n+2){--ca:#2E9BE0;--ca-rgb:46,155,224}
.world-card:nth-child(6n+3){--ca:#22B573;--ca-rgb:34,181,115}
.world-card:nth-child(6n+4){--ca:#9B59F6;--ca-rgb:155,89,246}
.world-card:nth-child(6n+5){--ca:#FF6584;--ca-rgb:255,101,132}
.world-card:nth-child(6n){--ca:#1FB6C9;--ca-rgb:31,182,201}
.world-card .idx{position:absolute;top:16px;right:18px;font-size:36px;font-weight:800;color:transparent;-webkit-text-stroke:1px rgba(var(--ca-rgb),.45)}
.world-card .badge{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;background:rgba(var(--ca-rgb),.18);transition:transform .3s}
.world-card:hover .badge{transform:scale(1.08) rotate(-6deg)}
.world-card .tag{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--ca);margin-bottom:8px}
.world-card h3{font-size:17px;margin-bottom:8px}
.world-card p{font-size:14px;margin:0;flex:1;line-height:1.6}
.world-card .pk{margin-top:14px;font-size:12.5px;color:var(--text-soft);border-top:1px dashed var(--border);padding-top:12px}
.world-card .pk b{color:var(--text)}
.world-card .go{margin-top:10px;font-size:13px;font-weight:700;color:var(--ca)}
.worlds-progress{height:4px;background:var(--border);border-radius:4px;margin:28px auto 0;overflow:hidden;max-width:calc(var(--maxw) - 12vw)}
.worlds-progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--blue))}
.rail-hint{text-align:center;font-size:13px;color:var(--text-soft);margin-top:14px;padding-bottom:20px}
@media (min-width:821px){.worlds-pin{height:360vh}.worlds-sticky{position:sticky;top:0;height:100vh}}
@media (max-width:820px){.world-rail{overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;transform:none!important;padding:16px 20px 28px}.world-card{scroll-snap-align:start;flex:0 0 272px}.worlds-progress{display:none}#worlds{padding-bottom:40px}}

/* brand services */
#brand{background:var(--bg-soft)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.svc-card{display:flex;flex-direction:column;background:linear-gradient(160deg,rgba(155,89,246,.14),rgba(255,255,255,.02));border:1px solid var(--border);border-radius:22px;padding:30px 26px;text-decoration:none;transition:transform .3s,border-color .3s}
.svc-card:hover{transform:translateY(-6px);border-color:#9B59F6}
.svc-card .ic{font-size:30px;margin-bottom:14px}
.svc-card h3{font-size:19px}
.svc-card p{font-size:14.5px;flex:1}
.svc-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 16px}
.svc-card .tags span{font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;background:rgba(155,89,246,.18);color:#D5B9FF}
.svc-card .go{font-size:13.5px;font-weight:700;color:#C9A6FF}

/* programs */
#programs{background:var(--panel-2)}
.prog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.prog-card{display:flex;flex-direction:column;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:22px;padding:30px 26px;text-decoration:none;transition:transform .3s,background .3s,border-color .3s}
.prog-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.07);border-color:var(--accent)}
.prog-card .ic{font-size:30px;margin-bottom:12px}
.prog-card h3{font-size:19px}
.prog-card p{font-size:14.5px;flex:1}
.prog-card .pct{display:inline-block;align-self:flex-start;margin:6px 0 14px;font-size:12.5px;font-weight:700;color:var(--on-accent);background:var(--accent);padding:5px 12px;border-radius:999px}
.prog-card .go{font-size:13.5px;font-weight:700;color:var(--accent)}
.note{font-size:13px;color:#7E8CA3;max-width:820px;margin:26px auto 0;text-align:center;line-height:1.6}

/* saas */
#saas{background:linear-gradient(180deg,var(--bg) 0%,#0B1626 100%);overflow:hidden}
.saas-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.saas-tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;background:#FFC21A;color:#1a1300;padding:5px 12px;border-radius:6px;margin-bottom:16px}
.saas-list{list-style:none;padding:0;margin:20px 0 24px;display:grid;gap:10px}
.saas-list li{display:flex;gap:10px;font-size:15.5px;color:var(--text-soft)}
.saas-list li::before{content:"▸";color:#FFC21A;font-weight:800}
.saas-prices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 26px}
.saas-prices div{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:14px 12px;text-align:center}
.saas-prices b{display:block;font-size:20px;color:var(--text)}
.saas-prices span{font-size:12.5px;color:var(--text-soft)}
.saas-prices .rec{border-color:#FFC21A;box-shadow:0 0 0 1px #FFC21A inset}
.stage{position:relative;display:flex;justify-content:center;padding:30px 0}
.stage::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 60% at 50% 50%,rgba(255,194,26,.18),transparent 70%)}
.phone{position:relative;width:268px;border-radius:38px;background:#0c1220;border:2px solid #2a3550;padding:14px;box-shadow:0 30px 70px rgba(0,0,0,.6);transform:rotate(-3deg);transition:transform .5s}
.stage:hover .phone{transform:rotate(0)}
.phone .screen{border-radius:26px;background:#101a2e;padding:16px 14px;overflow:hidden;position:relative;min-height:430px}
.phone .sbar{display:flex;justify-content:space-between;font-size:11px;color:var(--text-soft);margin-bottom:12px}
.gate{border-radius:16px;padding:14px;background:rgba(217,83,79,.16);border:1px solid rgba(217,83,79,.5);transition:background .6s,border-color .6s}
.gate small{display:block;font-size:11px;color:var(--text-soft)}
.gate strong{display:block;font-size:15px;margin:4px 0;color:#fff}
.gate.ok{background:rgba(34,181,115,.18);border-color:rgba(34,181,115,.6)}
.rows{list-style:none;margin:14px 0;padding:0;display:grid;gap:9px}
.rows li{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text);background:rgba(255,255,255,.04);border-radius:12px;padding:9px 10px}
.rows li small{display:block;color:var(--text-soft);font-size:10.5px}
.rows .ic{width:22px;height:22px;border-radius:50%;background:rgba(255,255,255,.1);flex:none;position:relative;transition:background .4s}
.rows li.done .ic{background:var(--green)}
.rows li.done .ic::after{content:"✓";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#06210f}
.qr{width:46px;height:46px;border-radius:8px;background:repeating-conic-gradient(#fff 0 25%,#0c1220 0 50%) 0 0/12px 12px;flex:none}
.pcard{display:flex;gap:12px;align-items:center;background:#fff;color:#0c1220;border-radius:14px;padding:10px;opacity:0;transform:translateY(12px);transition:opacity .5s,transform .5s}
.pcard.show{opacity:1;transform:none}
.pcard b{font-size:12.5px}.pcard small{display:block;font-size:10.5px;color:#4b5875}
.scanline{position:absolute;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,#FFC21A,transparent);top:0;animation:scan 3.2s linear infinite;opacity:.6}
@keyframes scan{to{top:100%}}

/* pricing */
#pricing{background:var(--bg-soft)}
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:44px 0 0}
.tier{background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:26px 22px;position:relative;transition:transform .3s,border-color .3s}
.tier:hover{transform:translateY(-5px);border-color:rgba(245,166,35,.5)}
.tier.rec{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.tier .bd{position:absolute;top:-12px;left:22px;background:var(--accent);color:var(--on-accent);font-size:11.5px;font-weight:800;padding:4px 10px;border-radius:999px}
.tier .lv{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-soft)}
.tier .pr{font-size:28px;font-weight:800;margin:8px 0 2px}
.tier .pr small{font-size:13px;font-weight:600;color:var(--text-soft)}
.tier .mo{font-size:13px;color:var(--text-soft);margin-bottom:6px}
.tier .dy{display:inline-block;font-size:12px;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:4px 10px;border-radius:999px;margin:6px 0 14px}
.tier ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.tier li{font-size:14px;color:var(--text-soft);display:flex;gap:8px;line-height:1.5}
.tier li::before{content:"✓";color:var(--green);font-weight:800}
.picker{margin-top:56px;background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:28px;box-shadow:var(--shadow)}
.picker h3{font-size:22px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 22px}
.chip{border:1px solid var(--border);background:rgba(255,255,255,.04);color:var(--text-soft);font:600 13.5px var(--font);padding:9px 14px;border-radius:999px;cursor:pointer;transition:all .2s}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.3)}
.chip[aria-selected=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.pk-panel[hidden]{display:none}
.pk-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.pk{background:var(--panel-2);border:1px solid var(--border);border-radius:16px;padding:18px}
.pk.feat{border-color:var(--accent)}
.pk h4{font-size:16px;margin-bottom:6px}
.pk .b{font-size:20px;font-weight:800}
.pk .m{font-size:12.5px;color:var(--text-soft);margin:2px 0 8px}
.pk .d{font-size:12px;color:var(--blue);font-weight:700}
.pk .t{font-size:12.5px;color:var(--text-soft);margin:8px 0 0;line-height:1.5}
.pk-foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:20px}
.fine{font-size:13px;color:#7E8CA3;margin:22px 0 0;line-height:1.6;text-align:center}

/* process */
#process{background:var(--bg)}
.timeline{position:relative;max-width:860px;margin:56px auto 0}
.timeline .track{position:absolute;left:24px;top:0;bottom:0;width:3px;background:var(--border)}
.timeline .track-fill{position:absolute;left:24px;top:0;width:3px;background:linear-gradient(var(--accent),var(--blue));height:0}
.tl-step{position:relative;padding:0 0 46px 66px;opacity:.35;transform:translateX(10px);transition:opacity .5s,transform .5s}
.tl-step.in{opacity:1;transform:none}
.tl-step:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:11px;top:-1px;width:26px;height:26px;border-radius:50%;background:var(--panel);border:3px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:var(--text-soft);transition:all .4s}
.tl-step.in .tl-dot{border-color:var(--accent);background:var(--accent);color:var(--on-accent);transform:scale(1.12)}
.tl-step .days{display:inline-block;font-size:12px;font-weight:700;color:var(--blue);background:rgba(46,155,224,.15);padding:4px 10px;border-radius:999px;margin-bottom:8px}
.tl-step h3{font-size:19px;margin-bottom:6px}
.tl-step p{margin:0;font-size:15px}

/* cases */
#cases{background:var(--bg-soft)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.case{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:24px;text-decoration:none;transition:transform .3s,border-color .3s}
.case:hover{transform:translateY(-5px);border-color:var(--blue)}
.case .k{font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
.case h3{font-size:16.5px;line-height:1.35}
.case p{font-size:14px;margin:0 0 14px;flex:1;line-height:1.6}
.case .go{font-size:13px;font-weight:700;color:var(--blue)}
.quote-card{max-width:860px;margin:44px auto 0;background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:40px;text-align:center;position:relative;overflow:hidden}
.quote-card::before{content:"\201C";position:absolute;top:-10px;left:22px;font-size:130px;font-weight:800;color:rgba(255,255,255,.05);font-family:Georgia,serif;line-height:1}
.quote-card q{display:block;font-size:20px;font-weight:600;line-height:1.55;color:var(--text);quotes:none;position:relative}
.quote-card .who{margin-top:16px;font-size:14px;color:var(--text-soft);position:relative}

/* tools */
#tools{background:var(--bg)}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.tool{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:28px 24px;text-decoration:none;transition:transform .3s,border-color .3s}
.tool:hover{transform:translateY(-5px);border-color:var(--green)}
.tool .ic{font-size:28px;margin-bottom:12px}
.tool h3{font-size:18px}.tool p{font-size:14.5px;flex:1}
.tool .go{font-size:13.5px;font-weight:700;color:var(--green)}

/* why */
#why{background:var(--bg-soft)}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.why{background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:26px 22px}
.why .n{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.08em}
.why h3{font-size:18px;margin:8px 0}
.why p{font-size:14.5px;margin:0}
.cmp{margin:48px auto 0;max-width:980px;overflow-x:auto;border:1px solid var(--border);border-radius:18px}
.cmp table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
.cmp th,.cmp td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top;color:var(--text-soft)}
.cmp th{background:var(--panel);color:var(--text);font-weight:700}
.cmp td:first-child{color:var(--text);font-weight:600}
.cmp .us{background:rgba(245,166,35,.08);color:var(--text)}
.cmp tr:last-child td{border-bottom:0}

/* blog */
#blog{background:var(--bg)}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.post{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:20px;overflow:hidden;text-decoration:none;transition:transform .3s,border-color .3s}
.post:hover{transform:translateY(-5px);border-color:var(--accent)}
.post .img{aspect-ratio:16/9;background:linear-gradient(135deg,#16233d,#0d1424);display:flex;align-items:center;justify-content:center;font-size:40px;overflow:hidden}
.post .img img{width:100%;height:100%;object-fit:cover;display:block}
.post .bd{padding:20px;display:flex;flex-direction:column;flex:1}
.post h3{font-size:16.5px;line-height:1.4}
.post p{font-size:14px;margin:0 0 12px;flex:1;line-height:1.6}
.post .go{font-size:13px;font-weight:700;color:var(--accent)}

/* faq */
#faq{background:var(--bg-soft)}
.faq-list{max-width:860px;margin:44px auto 0;display:grid;gap:12px}
details.f{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:0 22px;transition:border-color .2s}
details.f[open]{border-color:var(--accent)}
details.f summary{list-style:none;cursor:pointer;padding:20px 28px 20px 0;font-weight:700;font-size:16.5px;position:relative;color:var(--text)}
details.f summary::-webkit-details-marker{display:none}
details.f summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:24px;color:var(--accent);transition:transform .25s}
details.f[open] summary::after{transform:translateY(-50%) rotate(45deg)}
details.f .a{padding:0 0 20px}
details.f .a p{margin:0;font-size:15.5px}

/* final cta + form */
#cta{background:radial-gradient(120% 140% at 50% 0%,#131E33 0%,#05070C 70%);overflow:hidden}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.lead-form{background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:30px;box-shadow:var(--shadow)}
.lead-form h3{font-size:20px}
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:13px;font-weight:600;color:var(--text-soft);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:13px 14px;color:var(--text);font:500 15.5px var(--font)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field select option{background:#121B2E}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.alert{border-radius:12px;padding:12px 14px;font-size:14.5px;margin-bottom:14px}
.alert.ok{background:rgba(34,181,115,.16);border:1px solid rgba(34,181,115,.5);color:#bff2d8}
.alert.err{background:rgba(217,83,79,.16);border:1px solid rgba(217,83,79,.5);color:#ffc9c7}
.cta-note{margin-top:14px;font-size:13px;color:#6f7d92}
.cta-list{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.cta-list li{font-size:15.5px;color:var(--text-soft);display:flex;gap:10px}
.cta-list li::before{content:"✓";color:var(--green);font-weight:800}

/* footer */
footer{padding:64px 0 28px;background:var(--panel-2);border-top:1px solid var(--border)}
.f-grid{display:grid;grid-template-columns:1.3fr 1.2fr 1fr 1fr;gap:34px}
.f-grid h4{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--text);margin-bottom:14px}
.f-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.f-grid a{color:var(--text-soft);text-decoration:none;font-size:14px}
.f-grid a:hover{color:var(--accent)}
.f-about p{font-size:14px;max-width:320px}
.f-about img{height:34px;width:auto;margin-bottom:14px}
.f-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#6f7d92}
.f-bottom a{color:#8d9ab0;text-decoration:none}
.f-bottom a:hover{color:var(--accent)}

/* mobile dock */
#dock{display:none}
@media (max-width:760px){
  #dock{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:950;gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(9,13,22,.92);backdrop-filter:blur(10px);border-top:1px solid var(--border)}
  #dock .btn{flex:1;padding:12px 10px;font-size:14.5px}
  body{padding-bottom:70px}
  #soundToggle{left:12px;bottom:84px;width:40px;height:40px;font-size:16px}
}

@media (max-width:1020px){
  .pain-grid,.sol-grid,.tier-grid{grid-template-columns:repeat(2,1fr)}
  .prog-grid,.svc-grid,.case-grid,.tool-grid,.why-grid,.blog-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 20px}
  .def-grid,.saas-grid,.cta-grid{grid-template-columns:1fr;gap:36px}
  .pk-row{grid-template-columns:1fr 1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  section{padding:76px 0}
  .wrap{padding:0 18px}
  .pain-grid,.sol-grid,.tier-grid,.prog-grid,.svc-grid,.case-grid,.tool-grid,.why-grid,.blog-grid,.pk-row,.f-grid{grid-template-columns:1fr}
  .quote-card{padding:28px}.quote-card q{font-size:17px}
  .saas-prices{grid-template-columns:1fr}
  .picker{padding:20px}
  .lead-form{padding:22px}
  .float-icon{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transition:none;opacity:1;transform:none;filter:none}
  .blob,.aura,.float-icon,.scroll-cue,.btn-primary.pulse,.marquee-track,.cycler-dot,.grad,.scanline{animation:none!important}
  .tl-step{opacity:1;transform:none}
}

/* ===== Typography pass: tiếng Việt rõ dấu, cân dòng, không rớt chữ lẻ ===== */
html{text-rendering:optimizeLegibility;font-kerning:normal}
body{font-feature-settings:"kern" 1,"liga" 1;letter-spacing:0}
h1,h2,h3,h4,.lead,.eyebrow,.sec-h p,.hcopy .lead{text-wrap:balance}
p,li,summary,.tg,.drow,.pain p,.fact span,.faq .a p{text-wrap:pretty}
h1,h2,h3,h4{overflow-wrap:break-word;hyphens:manual}
.upper h1{text-transform:none;letter-spacing:-.005em}
.upper h2,.upper h3{line-height:1.26}
.nb{white-space:nowrap}
.nav-call{display:inline-flex}
@media(max-width:1180px){.nav-call{display:none}}
#dock .btn{white-space:nowrap}
#worlds.no-pin .worlds-pin{height:auto!important}
#worlds.no-pin .worlds-sticky{position:static!important;height:auto!important}
#worlds.no-pin .world-rail{overflow-x:auto;scroll-snap-type:x mandatory;transform:none!important;padding:16px 6vw 28px}
#worlds.no-pin .world-card{scroll-snap-align:start}
#worlds.no-pin .worlds-progress{display:none}
.grad{white-space:nowrap}

/* ===== Sửa tràn dòng nút / chữ quá nhỏ ===== */
.btn,.nav-cta,.chip{white-space:nowrap}
.btn-s,.nav-cta{white-space:nowrap}
@media(max-width:520px){.crumbs{display:none}.nav .btn-s{padding:9px 14px}.nav-cta{padding:9px 14px;font-size:13px}}
#dock .btn{padding:12px 6px;font-size:14px}

/* ===== Phong cách cờ vua ===== */
.float-piece{position:absolute;width:64px;height:64px;opacity:0;animation:floatIn 1s ease forwards,floatY 6.5s ease-in-out infinite;filter:drop-shadow(0 10px 16px rgba(0,0,0,.5));overflow:visible}
.float-piece.sm{width:44px;height:44px}
@keyframes floatIn{to{opacity:.92}}
.hero-floor{position:absolute;left:-10%;right:-10%;bottom:-6%;height:46%;background:conic-gradient(rgba(255,255,255,.07) 25%,transparent 0 50%,rgba(255,255,255,.07) 0 75%,transparent 0) 0 0/96px 96px;transform:perspective(520px) rotateX(64deg);transform-origin:50% 100%;-webkit-mask-image:linear-gradient(to top,#000 10%,transparent 85%);mask-image:linear-gradient(to top,#000 10%,transparent 85%);animation:floorMove 24s linear infinite;pointer-events:none}
@keyframes floorMove{to{background-position:192px 0}}
.hero-move{margin:20px 0 0;max-width:620px;display:flex;gap:10px;align-items:center;justify-content:center;font-size:15px;color:var(--text-soft);line-height:1.5;text-wrap:balance}
.pc-inline{width:26px;height:26px;flex:none;vertical-align:-7px;margin-right:8px;--pc:#FFC21A;--pc2:#FF9F1C;overflow:visible}
.hero-move .pc-inline{margin:0}
.board-strip{height:16px;background:repeating-conic-gradient(rgba(245,166,35,.28) 0 25%,rgba(245,166,35,.04) 0 50%) 0 0/32px 32px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.tier-pc{position:absolute;right:16px;top:14px;width:46px;height:46px;--pc:#FFC21A;--pc2:#FF9F1C;opacity:.95;overflow:visible;transition:transform .35s cubic-bezier(.34,1.56,.64,1)}
.tier:nth-child(2) .tier-pc{--pc:#8FD0FF;--pc2:#2E9BE0}.tier:nth-child(3) .tier-pc{--pc:#9BE3BD;--pc2:#22B573}.tier:nth-child(4) .tier-pc{--pc:#E3C8FF;--pc2:#9B59F6}
.tier:hover .tier-pc{transform:translateY(-6px) rotate(-8deg) scale(1.1)}
.tier .pc-name{text-transform:none;letter-spacing:0;color:var(--accent);font-weight:700}
.tl-step h3 .pc-inline{width:30px;height:30px}
.tl-step:nth-child(4) .pc-inline{--pc:#8FD0FF;--pc2:#2E9BE0}.tl-step:nth-child(5) .pc-inline{--pc:#9BE3BD;--pc2:#22B573}.tl-step:nth-child(6) .pc-inline{--pc:#E3C8FF;--pc2:#9B59F6}

/* Con trỏ quân cờ */
#chessCursor{position:fixed;left:0;top:0;z-index:1100;pointer-events:none;width:42px;height:42px;margin:-8px 0 0 -8px;will-change:transform;opacity:0;transition:opacity .25s}
#chessCursor.on{opacity:1}
#chessCursor.off{opacity:0}
#chessCursor .cc-in{width:100%;height:100%;transform-origin:50% 90%;will-change:transform}
#chessCursor svg{width:100%;height:100%;display:block;overflow:visible;--pc:#FFC21A;--pc2:#FF9F1C;--pcl:#2a1a08;filter:drop-shadow(0 6px 8px rgba(0,0,0,.45))}
#chessCursor.m-knight svg{--pc:#FFC21A}
#chessCursor.m-queen svg{--pc:#FFE08A;--pc2:#FF8F4D}
#chessCursor.m-rook svg{--pc:#9BE3BD;--pc2:#22B573}
#chessCursor.m-bishop svg{--pc:#8FD0FF;--pc2:#2E9BE0}
#chessCursor.swap .cc-in{animation:ccPop .38s cubic-bezier(.34,1.56,.64,1)}
@keyframes ccPop{0%{transform:scale(.4) rotate(-20deg)}100%{transform:scale(1) rotate(0)}}
#chessCursor.down .cc-in{animation:ccDown .22s ease-out}
@keyframes ccDown{40%{transform:scale(.78,.64)}100%{transform:scale(1)}}
.cc-sq{position:fixed;left:0;top:0;z-index:1090;width:11px;height:11px;pointer-events:none;border-radius:2px;animation:ccSq .7s ease-out forwards}
@keyframes ccSq{0%{opacity:.9;transform:translate(var(--tx,0),var(--ty,0)) scale(1) rotate(0)}100%{opacity:0;transform:translate(var(--tx,0),var(--ty,0)) scale(.2) rotate(var(--rot,60deg))}}
body.has-cursor,body.has-cursor a,body.has-cursor button,body.has-cursor summary,body.has-cursor label,body.has-cursor .chip{cursor:none}
body.has-cursor input,body.has-cursor select,body.has-cursor textarea{cursor:text}
@media (hover:none),(pointer:coarse){#chessCursor,.cc-sq{display:none}}
@media (max-width:640px){.float-piece{width:48px;height:48px}.float-piece.sm{width:34px;height:34px}.tier-pc{width:38px;height:38px}}
@media (prefers-reduced-motion:reduce){.float-piece,.hero-floor{animation:none!important;opacity:.8}#chessCursor{display:none}}