/* ReelHub24h website. Nguon: mockups/website-0.1.html (da duyet 2026-11-07) */
:root{
  --blue:#2563eb; --teal:#14b8a6; --cyan:#06b6d4; --ink:#0b1b33; --ink2:#334155; --mute:#64748b;
  --bg:#ffffff; --soft:#f1f7fb; --line:#e2e8f0; --card:#ffffff;
  --grad:linear-gradient(120deg,#2563eb 0%,#0ea5e9 45%,#14b8a6 100%);
  --r:18px; --shadow:0 10px 30px -12px rgba(15,40,80,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* header */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(255,255,255,.75);border-bottom:1px solid rgba(226,232,240,.7)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand img{width:36px;height:36px;animation:spin 18s linear infinite}
.brand b{color:var(--teal)}
.menu{display:flex;gap:22px;font-weight:500;color:var(--ink2);font-size:15px}
.menu a{position:relative}
.menu a::after{content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--grad);transition:width .3s}
.menu a:hover::after{width:100%}
@media(max-width:820px){.menu{display:flex}}

/* buttons */
.btn{position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:700;border-radius:999px;padding:13px 24px;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px) scale(1.03)}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px -8px rgba(14,165,233,.7)}
.btn-primary::before{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg);animation:shine 3.2s ease-in-out infinite}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-zalo{background:#0068ff;color:#fff;box-shadow:0 10px 24px -8px rgba(0,104,255,.6)}
.btn-sm{padding:9px 16px;font-size:14px}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 90px;background:radial-gradient(1200px 600px at 85% -10%,rgba(20,184,166,.18),transparent 60%),radial-gradient(900px 500px at -10% 20%,rgba(37,99,235,.16),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding:36px 0 60px}}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--ink2);box-shadow:var(--shadow)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 rgba(20,184,166,.6);animation:pulse 1.8s infinite}
h1{font-size:clamp(32px,5.4vw,58px);line-height:1.08;font-weight:800;letter-spacing:-.02em;margin:18px 0 16px}
.lead{font-size:clamp(16px,1.9vw,19px);color:var(--ink2);max-width:540px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stats{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.stat b{display:block;font-size:28px;font-weight:800}
.stat > span{font-size:13px;color:var(--mute)}
.visual{position:relative;aspect-ratio:1/1;max-width:500px;margin:0 auto;width:100%}
.orb{position:absolute;inset:8%;border-radius:50%;background:var(--grad);filter:blur(40px);opacity:.35;animation:breathe 6s ease-in-out infinite}
.visual .logo{position:absolute;inset:18%;width:64%;animation:float 6s ease-in-out infinite;filter:drop-shadow(0 30px 40px rgba(14,100,200,.35))}
.chip{position:absolute;background:#fff;border-radius:14px;padding:10px 14px;box-shadow:var(--shadow);font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px;animation:float 5s ease-in-out infinite}
.chip i{font-style:normal;font-size:18px}
.c1{top:8%;left:-2%;animation-delay:-1s}.c2{top:40%;right:-4%;animation-delay:-2.5s}.c3{bottom:6%;left:8%;animation-delay:-3.5s}
.chip .up{color:#16a34a}
canvas#net{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.55}

/* sections */
section{padding:90px 0}
.sec-soft{background:var(--soft)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--teal)}
h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:-.02em;margin:8px 0 12px}
.sub{color:var(--ink2);max-width:640px}
.center{text-align:center}.center .sub{margin:0 auto}

/* flow */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:46px;position:relative}
.flow::before{content:"";position:absolute;top:38px;left:10%;right:10%;height:3px;background:linear-gradient(90deg,var(--blue),var(--teal));background-size:200% 100%;animation:flowline 3s linear infinite;border-radius:3px;opacity:.5}
.step{position:relative;text-align:center}
.step .ic{width:76px;height:76px;margin:0 auto 14px;border-radius:22px;display:grid;place-items:center;font-size:30px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);transition:transform .3s}
.step:hover .ic{transform:translateY(-6px) rotate(-4deg)}
.step h4{font-size:16px}.step p{font-size:13.5px;color:var(--mute)}
.step .n{position:absolute;top:-6px;left:calc(50% + 22px);background:var(--grad);color:#fff;font-size:12px;font-weight:800;width:24px;height:24px;border-radius:50%;display:grid;place-items:center}
@media(max-width:820px){.flow{grid-template-columns:1fr;gap:22px}.flow::before{display:none}.step{display:flex;gap:16px;text-align:left;align-items:center}.step .ic{margin:0;flex:none}.step .n{left:56px}}

/* features */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
@media(max-width:900px){.feats{grid-template-columns:1fr 1fr}}@media(max-width:560px){.feats{grid-template-columns:1fr}}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:transform .3s,box-shadow .3s,border-color .3s;position:relative;overflow:hidden}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feat::after{content:"";position:absolute;inset:auto -40% -60% auto;width:180px;height:180px;border-radius:50%;background:var(--grad);opacity:0;transition:opacity .4s;filter:blur(30px)}
.feat:hover::after{opacity:.18}
.feat .fi{width:48px;height:48px;border-radius:14px;background:var(--grad);display:grid;place-items:center;font-size:22px;margin-bottom:14px;color:#fff}
.feat h3{font-size:18px;margin-bottom:6px}.feat p{color:var(--mute);font-size:14.5px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px;perspective:1200px}
@media(max-width:900px){.plans{grid-template-columns:1fr;max-width:440px;margin-left:auto;margin-right:auto}}
.plan{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px 26px;position:relative;transition:transform .15s ease-out,box-shadow .3s;transform-style:preserve-3d}
.plan.hot{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 30px 60px -25px rgba(14,165,233,.55)}
.badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:800;padding:5px 14px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:19px}.plan .seats{color:var(--mute);font-size:14px}
.price{font-size:clamp(28px,3.2vw,38px);font-weight:800;margin:16px 0 4px;letter-spacing:-.02em;white-space:nowrap}
.price small{font-size:15px;color:var(--mute);font-weight:500}
.plan ul{list-style:none;margin:18px 0 24px;display:grid;gap:10px;font-size:14.5px}
.plan li{display:flex;gap:10px}.plan li::before{content:"✓";color:var(--teal);font-weight:800}
.plan .btn{width:100%;justify-content:center}
.trial-note{text-align:center;margin-top:26px;color:var(--ink2)}
.trial-note b{color:var(--teal)}

/* download */
.dl{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:var(--ink);color:#fff;border-radius:28px;padding:50px;position:relative;overflow:hidden}
.dl::before{content:"";position:absolute;width:500px;height:500px;right:-150px;top:-200px;border-radius:50%;background:var(--grad);filter:blur(80px);opacity:.45;animation:breathe 7s ease-in-out infinite}
.dl > *{position:relative}
.dl .sub{color:#cbd5e1}
.dl ol{margin:18px 0 0 18px;color:#cbd5e1;display:grid;gap:6px}
.dl-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:26px;text-align:center}
.dl-card .os{color:#94a3b8;font-size:13px;margin-top:10px}
@media(max-width:820px){.dl{grid-template-columns:1fr;padding:30px 22px}}

/* faq */
.faq{max-width:780px;margin:40px auto 0;display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 22px;transition:box-shadow .3s}
details[open]{box-shadow:var(--shadow)}
summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:22px;line-height:1;color:var(--teal);transition:transform .3s}
details[open] summary::after{transform:rotate(45deg)}
details .ans{color:var(--ink2);padding-bottom:18px;animation:fadeDown .35s ease}

/* page kiem tien */
.pk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
@media(max-width:820px){.pk-grid{grid-template-columns:1fr}}
.pk-card{background:linear-gradient(160deg,#fff,#f0fdfa);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:transform .3s,box-shadow .3s}
.pk-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pk-card .fi{width:48px;height:48px;border-radius:14px;background:var(--grad);display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.pk-card h3{font-size:18px;margin-bottom:6px}.pk-card p{color:var(--mute);font-size:14.5px}
.pk-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
@media(max-width:820px){.pk-steps{grid-template-columns:1fr 1fr}}
.pk-steps div{display:flex;gap:10px;align-items:center;background:var(--soft);border-radius:14px;padding:14px;font-size:14px;font-weight:600}
.pk-steps i{font-style:normal;width:26px;height:26px;border-radius:50%;background:var(--grad);color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center;flex:none}
.pk-warn{margin:28px auto 0;max-width:780px;background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:14px;padding:14px 18px;font-size:13.5px}

/* contact */
.contact-card{display:flex;align-items:center;gap:20px;max-width:620px;margin:36px auto 0;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px 26px;box-shadow:var(--shadow);text-align:left;flex-wrap:wrap}
.contact-card .avatar{width:64px;height:64px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;font-size:22px;display:grid;place-items:center;flex:none}
.contact-card .who{flex:1;min-width:180px;display:grid}
.contact-card .who span{color:var(--mute);font-size:14px}
.contact-card .who strong{font-size:20px;margin-top:2px}
@media(max-width:560px){.contact-card .btn{width:100%;justify-content:center}}

/* footer */
footer{background:#06111f;color:#94a3b8;padding:50px 0 30px;font-size:14px}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot .brand{color:#fff}
.disclaimer{margin-top:26px;padding:16px 18px;border:1px solid rgba(148,163,184,.25);border-radius:14px;font-size:13px;line-height:1.6}
.disclaimer b{color:#fbbf24}
.copy{margin-top:20px;font-size:12.5px}

/* dialog */
.overlay{position:fixed;inset:0;background:rgba(6,17,31,.55);backdrop-filter:blur(6px);z-index:90;display:none;align-items:center;justify-content:center;padding:16px}
.overlay.show{display:flex;animation:fade .25s ease}
.dialog{background:#fff;border-radius:24px;max-width:480px;width:100%;max-height:92vh;overflow:auto;padding:28px;position:relative;animation:pop .45s cubic-bezier(.2,1.4,.4,1)}
.x{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;border:0;background:var(--soft);cursor:pointer;font-size:18px}
.dialog h3{font-size:21px}.dialog .amt{font-size:30px;font-weight:800;margin:4px 0 18px}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;background:var(--soft);border-radius:12px;margin-bottom:8px}
.row span{font-size:12.5px;color:var(--mute);display:block}
.row strong{font-size:16px;letter-spacing:.02em}
.copy-btn{border:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s;white-space:nowrap}
.copy-btn:hover{border-color:var(--teal);color:var(--teal)}
.copy-btn.ok{background:var(--teal);color:#fff;border-color:var(--teal)}
.steps3{display:grid;gap:8px;margin:18px 0;font-size:14px;color:var(--ink2)}
.steps3 div{display:flex;gap:10px;align-items:center}
.steps3 i{font-style:normal;width:24px;height:24px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;font-size:12px;display:grid;place-items:center;flex:none}
.dialog .btn{width:100%;justify-content:center;font-size:16px;padding:16px}
.eta{text-align:center;font-size:13.5px;color:var(--mute);margin-top:10px}
.eta b{color:#16a34a}

/* toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,120px);background:var(--ink);color:#fff;padding:12px 20px;border-radius:999px;font-weight:600;font-size:14px;z-index:100;transition:transform .4s cubic-bezier(.2,1.4,.4,1);display:flex;gap:8px;align-items:center}
.toast.show{transform:translate(-50%,0)}

/* floating zalo */
.fab{position:fixed;right:18px;bottom:18px;z-index:80;width:60px;height:60px;border-radius:50%;background:#0068ff;color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px;border:0;cursor:pointer;box-shadow:0 12px 30px -8px rgba(0,104,255,.7);animation:ring 2.4s infinite}

/* reveal */
.rv{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.35}50%{transform:scale(1.08);opacity:.5}}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(20,184,166,0)}100%{box-shadow:0 0 0 0 rgba(20,184,166,0)}}
@keyframes shine{0%,60%{left:-120%}100%{left:160%}}
@keyframes flowline{to{background-position:-200% 0}}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:scale(.85) translateY(20px)}}
@keyframes fadeDown{from{opacity:0;transform:translateY(-6px)}}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 rgba(0,104,255,.5),0 12px 30px -8px rgba(0,104,255,.7)}70%{box-shadow:0 0 0 16px rgba(0,104,255,0),0 12px 30px -8px rgba(0,104,255,.7)}}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}

/* fx canvas + download note */
#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:120}
.dl-note{display:none;margin-top:12px;font-size:13px;color:#fbbf24}
.dl-note.show{display:block}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:200;background:#fff;padding:8px 12px;border-radius:8px}

/* page bat kiem tien: chi tiet */
.pk-detail{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}
@media(max-width:900px){.pk-detail{grid-template-columns:1fr}}
.pk-box{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--shadow)}
.pk-box h3{font-size:19px;margin-bottom:6px}
.pk-hint{color:var(--mute);font-size:14px;margin-bottom:6px}
.pk-check{list-style:none;counter-reset:c;display:grid;gap:12px;margin-top:14px}
.pk-check li{counter-increment:c;display:grid;grid-template-columns:30px 1fr;column-gap:12px;align-items:start}
.pk-check li::before{content:counter(c);grid-row:span 2;width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;font-size:13px;display:grid;place-items:center}
.pk-check b{font-size:15px}
.pk-check span{color:var(--mute);font-size:13.5px}

/* nav mobile */
.nav-right{display:flex;align-items:center;gap:10px}
header .btn-sm{white-space:nowrap}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s,opacity .3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:820px){
  .burger{display:flex}
  .menu{position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:6px 20px 14px;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s}
  .menu.open{display:flex;opacity:1;transform:none;pointer-events:auto}
  .menu a{padding:12px 0;border-bottom:1px solid var(--soft)}
  .menu a::after{display:none}
}
@media(max-width:420px){header .btn-sm{padding:8px 12px;font-size:13px}.brand{font-size:18px}.stats{gap:18px}.stat b{font-size:22px}}

/* bot telegram */
a.feat{display:block;color:inherit}
.bot-grid{display:grid;grid-template-columns:340px 1fr;gap:36px;margin-top:44px;align-items:start}
@media(max-width:900px){.bot-grid{grid-template-columns:1fr}}
.bot-phone{background:#0e1621;border-radius:30px;padding:16px;box-shadow:0 40px 70px -30px rgba(14,60,120,.6);border:6px solid #1c2733;color:#e6edf3;font-size:13.5px;display:grid;gap:10px;max-width:340px;margin:0 auto;width:100%;animation:float 7s ease-in-out infinite}
.bp-head{display:flex;gap:10px;align-items:center;padding-bottom:10px;border-bottom:1px solid #1f2c3a}
.bp-head small{display:block;color:#7d8b99;font-size:12px}
.bp-ava{width:36px;height:36px;border-radius:50%;background:var(--grad);display:grid;place-items:center}
.bp-msg{background:#182533;border-radius:14px 14px 14px 4px;padding:10px 12px;line-height:1.5}
.bp-msg code{color:#14b8a6;letter-spacing:1px}
.bp-kb{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.bp-kb span{background:#2b5278;border-radius:8px;padding:9px 6px;text-align:center;font-weight:600;font-size:12.5px;transition:background .2s}
.bp-kb span:hover{background:#3a6a98}
.bot-feats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.bot-feats{grid-template-columns:1fr}}
.bf{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;transition:transform .3s,box-shadow .3s}
.bf:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.bf i{font-style:normal;font-size:22px;width:42px;height:42px;border-radius:12px;background:var(--soft);display:grid;place-items:center;flex:none}
.bf b{display:block;font-size:15px}.bf span{color:var(--mute);font-size:13.5px}
.bot-cmds{margin-top:26px;background:var(--soft);border-radius:16px;padding:16px 20px;font-size:14px;line-height:1.9}
.bot-cmds code{background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 7px;font-size:13px}
.bot-cmds span{color:var(--mute);font-size:13px}

/* hero visual v2: quy dao chip, vong song, parallax */
.visual{perspective:1100px}
.stage{position:absolute;inset:0;transform-style:preserve-3d;will-change:transform}
.visual .logo{z-index:2;inset:24%;width:52%}
.ring{position:absolute;border-radius:50%;pointer-events:none}
.ring.r1{inset:6%;border:1.5px dashed rgba(14,165,233,.35);animation:spin 50s linear infinite}
.ring.r2{inset:14%;border:1px solid rgba(20,184,166,.25);animation:spin 22s linear infinite reverse}
.ring.r3{inset:-2%;border:1px solid rgba(37,99,235,.12);animation:spin 70s linear infinite}
.ring span{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--teal);box-shadow:0 0 14px 4px rgba(20,184,166,.6);top:-5px;left:calc(50% - 5px)}
.ring span:nth-child(2){top:auto;bottom:-5px;background:var(--blue);box-shadow:0 0 14px 4px rgba(37,99,235,.6)}
.ring.r3 span{background:#fbbf24;box-shadow:0 0 14px 4px rgba(251,191,36,.6)}
.pulse{position:absolute;inset:30%;border-radius:50%;border:2px solid rgba(20,184,166,.55);animation:ping 3.6s cubic-bezier(.2,.6,.3,1) infinite;pointer-events:none}
.pulse.p2{animation-delay:1.2s;border-color:rgba(14,165,233,.5)}
.pulse.p3{animation-delay:2.4s;border-color:rgba(37,99,235,.45)}
@keyframes ping{from{transform:scale(.75);opacity:.9}to{transform:scale(1.75);opacity:0}}
.stage .chip{left:0;top:0;animation:none;will-change:transform,opacity;white-space:nowrap;transition:box-shadow .25s;cursor:default;backdrop-filter:blur(6px);background:rgba(255,255,255,.92)}
.stage .chip:hover{box-shadow:0 16px 36px -12px rgba(14,165,233,.6)}
@media(max-width:560px){.stage .chip{font-size:11.5px;padding:7px 10px}.stage .chip i{font-size:15px}}

/* chuot: vong theo chuot + nut hut */
.cur-ring{position:fixed;left:0;top:0;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;border:2px solid rgba(14,165,233,.7);pointer-events:none;z-index:130;transition:width .25s,height .25s,margin .25s,background .25s,border-color .25s,opacity .3s;mix-blend-mode:multiply;opacity:0}
.cur-ring.on{opacity:1}
.cur-ring.hover{width:58px;height:58px;margin:-29px 0 0 -29px;background:rgba(20,184,166,.14);border-color:rgba(20,184,166,.8)}
.cur-ring.down{width:24px;height:24px;margin:-12px 0 0 -12px;background:rgba(37,99,235,.2)}
.cur-glow{position:fixed;left:0;top:0;width:420px;height:420px;margin:-210px 0 0 -210px;border-radius:50%;background:radial-gradient(circle,rgba(20,184,166,.13),transparent 65%);pointer-events:none;z-index:0;opacity:0;transition:opacity .4s}
.cur-glow.on{opacity:1}
.cur-ripple{position:fixed;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;border:2px solid var(--teal);pointer-events:none;z-index:131;animation:ripple .6s ease-out forwards}
@keyframes ripple{to{transform:scale(6);opacity:0}}

/* the: spotlight + vien sang theo chuot, nghieng muot */
.rv{transition:opacity .45s ease,transform .45s cubic-bezier(.2,.8,.2,1),filter .45s ease;transform:translateY(22px) scale(.98);filter:blur(4px)}
.rv.in{filter:none}
.fx-card{position:relative;isolation:isolate;will-change:transform}
.fx-card.tilting{transition:box-shadow .2s,border-color .2s,background .2s!important}
.fx-card::before{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgba(20,184,166,.16),rgba(37,99,235,.06) 40%,transparent 70%);opacity:0;transition:opacity .2s;pointer-events:none;z-index:-1}
.fx-card::after,.feat.fx-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:radial-gradient(200px circle at var(--mx,50%) var(--my,50%),#14b8a6,#2563eb 45%,transparent 75%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .2s;pointer-events:none;filter:none;width:auto;height:auto}
.fx-card:hover::before,.fx-card:hover::after{opacity:1}
.fx-card:hover{box-shadow:0 22px 44px -20px rgba(14,100,200,.45);border-color:transparent}
.feat .fi,.pk-card .fi,.bf i,.step .ic{transition:transform .35s cubic-bezier(.2,1.6,.4,1),box-shadow .3s}
.feat:hover .fi,.pk-card:hover .fi{transform:rotate(-10deg) scale(1.15);box-shadow:0 10px 22px -8px rgba(14,165,233,.8)}
.bf:hover i{transform:scale(1.18) rotate(8deg)}
.feat h3,.pk-card h3,.bf b{transition:color .2s}
.feat:hover h3,.pk-card:hover h3,.bf:hover b{color:var(--blue)}
.feat,.bf,.pk-card{transition:transform .2s ease-out,box-shadow .2s,border-color .2s}
@media (prefers-reduced-motion: reduce){.rv{filter:none!important}}

/* anh dai dien lien he */
img.avatar{object-fit:cover;border:3px solid #fff;box-shadow:0 0 0 2px var(--teal),0 10px 24px -8px rgba(14,165,233,.6);transition:transform .35s cubic-bezier(.2,1.6,.4,1)}
.contact-card:hover img.avatar{transform:scale(1.08) rotate(-4deg)}

/* cach hoat dong: hover + buoc dang sang lan luot */
.step .ic{position:relative;transition:transform .4s cubic-bezier(.2,1.5,.4,1),box-shadow .35s,background .35s,border-color .35s}
.step .ic::after{content:"";position:absolute;inset:-6px;border-radius:26px;border:2px solid transparent;background:var(--grad) border-box;-webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transform:scale(.9);transition:opacity .35s,transform .35s}
.step .n{z-index:2;transition:transform .35s cubic-bezier(.2,1.6,.4,1)}
.step h4{transition:color .25s}
.step:hover .ic,.step.active .ic{transform:translateY(-8px) scale(1.06);background:linear-gradient(160deg,#fff,#ecfeff);box-shadow:0 18px 34px -14px rgba(14,165,233,.65);border-color:transparent}
.step:hover .ic::after,.step.active .ic::after{opacity:1;transform:scale(1)}
.step:hover .n,.step.active .n{transform:scale(1.2)}
.step:hover h4,.step.active h4{color:var(--blue)}
.step.active .ic{animation:stepGlow 1.6s ease-in-out}
@keyframes stepGlow{0%{box-shadow:0 0 0 0 rgba(20,184,166,.45)}60%{box-shadow:0 0 0 14px rgba(20,184,166,0),0 18px 34px -14px rgba(14,165,233,.65)}100%{box-shadow:0 18px 34px -14px rgba(14,165,233,.65)}}

/* ================= MOBILE (<= 640px) ================= */
.mbar{display:none}
.plan-dots{display:none}
@media (max-width:640px){
  body{font-size:15px}
  .wrap{padding:0 16px}
  section{padding:56px 0}
  h2{font-size:26px;line-height:1.2}
  .sub{font-size:15px}
  .eyebrow{font-size:12px}

  /* header */
  .nav{height:58px}
  .menu{top:58px}
  .nav-right .btn-sm{display:none}
  .brand{font-size:19px}.brand img{width:32px;height:32px}

  /* hero */
  .hero{padding:22px 0 36px}
  .hero-grid{gap:8px}
  .pill{font-size:12px;padding:5px 12px}
  h1{font-size:36px;margin:14px 0 12px}
  .lead{font-size:15.5px}
  .cta{display:grid;grid-template-columns:1fr;gap:10px;margin-top:22px}
  .cta .btn{justify-content:center;padding:15px 20px;font-size:16px}
  .stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:22px}
  .stat{background:rgba(255,255,255,.85);border:1px solid var(--line);border-radius:16px;padding:12px 6px;text-align:center;box-shadow:0 6px 18px -12px rgba(15,40,80,.3)}
  .stat b{font-size:20px!important}
  .stat > span{font-size:11px;line-height:1.3;display:block;margin-top:2px}
  .visual{max-width:360px;margin-top:6px}

  /* cach hoat dong: timeline doc */
  .flow{grid-template-columns:1fr;gap:14px;margin-top:30px;text-align:left}
  .flow::before{display:block;top:30px;bottom:30px;left:31px;right:auto;width:3px;height:auto;background:linear-gradient(180deg,var(--blue),var(--teal));background-size:100% 200%;animation:flowlineV 3s linear infinite}
  .step{display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px 14px 12px 0;margin-left:0}
  .step .ic{width:64px;height:64px;font-size:26px;border-radius:18px;margin:0;box-shadow:none;border:0;background:transparent}
  .step .n{left:44px;top:4px}
  .step h4{font-size:16px}.step p{font-size:13.5px}
  .step:hover .ic,.step.active .ic{transform:scale(1.06)}
  .step.active{border-color:transparent;box-shadow:0 14px 30px -18px rgba(14,165,233,.7);background:linear-gradient(120deg,#fff,#f0fdfa)}

  /* tinh nang: danh sach gon, icon ben trai */
  .feats{grid-template-columns:1fr;gap:12px;margin-top:30px}
  .feat{display:grid;grid-template-columns:46px 1fr;column-gap:14px;padding:16px;border-radius:18px}
  .feat .fi{grid-row:span 2;width:46px;height:46px;margin:0;font-size:20px}
  .feat h3{font-size:16px;margin:0 0 2px;align-self:end}
  .feat p{font-size:13.5px}

  /* bot */
  .bot-grid{gap:24px;margin-top:30px}
  .bot-phone{max-width:300px;border-radius:26px;font-size:12.5px}
  .bot-feats{grid-template-columns:1fr;gap:10px}
  .bf{padding:14px}
  .bot-cmds{font-size:13px;line-height:2}

  /* bang gia: vuot ngang */
  .plans{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;margin:30px -16px 0;padding:18px 16px 10px;max-width:none;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .plans::-webkit-scrollbar{display:none}
  .plan{flex:0 0 84%;scroll-snap-align:center;padding:26px 22px}
  .plans .rv{opacity:1;transform:none;filter:none}
  .price{font-size:32px}
  .plan-dots{display:flex;justify-content:center;gap:8px;margin-top:10px}
  .plan-dots i{width:8px;height:8px;border-radius:99px;background:var(--line);transition:width .3s,background .3s}
  .plan-dots i.on{width:26px;background:var(--grad)}
  .trial-note{font-size:14px;margin-top:18px}

  /* page bat kiem tien */
  .pk-grid{gap:12px;margin-top:28px}
  .pk-card{display:grid;grid-template-columns:46px 1fr;column-gap:14px;padding:16px}
  .pk-card .fi{grid-row:span 2;margin:0;width:46px;height:46px}
  .pk-card h3{font-size:16px;margin:0;align-self:end}.pk-card p{font-size:13.5px}
  .pk-box{padding:20px 16px;border-radius:20px}
  .pk-steps{grid-template-columns:1fr 1fr;gap:8px}
  .pk-steps div{font-size:13px;padding:12px}
  .pk-warn{font-size:13px}

  /* tai ve */
  .dl{padding:28px 20px;border-radius:24px;gap:22px}
  .dl h2{font-size:24px}
  .dl-card .btn{width:100%;justify-content:center}

  /* faq */
  .faq{margin-top:26px;gap:10px}
  details{padding:0 16px;border-radius:14px}
  summary{padding:16px 0;font-size:15px}

  /* lien he */
  .contact-card{flex-direction:column;text-align:center;padding:26px 20px;gap:12px}
  .contact-card .who{min-width:0}
  .contact-card img.avatar{width:84px;height:84px}
  .contact-card .btn{width:100%;justify-content:center}

  /* footer */
  footer{padding:40px 0 110px}
  .foot{flex-direction:column;gap:22px}

  /* hop thanh toan: bottom sheet */
  .overlay{align-items:flex-end;padding:0}
  .dialog{border-radius:26px 26px 0 0;max-height:92vh;padding:26px 18px calc(18px + env(safe-area-inset-bottom));animation:sheet .42s cubic-bezier(.2,.9,.3,1)}
  .dialog::before{content:"";display:block;width:44px;height:5px;border-radius:9px;background:var(--line);margin:-12px auto 14px}
  .dialog .amt{font-size:26px}
  .row strong{font-size:15px}

  /* thanh duoi co dinh thay nut Zalo noi */
  .fab{display:none}
  .mbar{display:flex;position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:85;gap:8px;padding:8px;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(226,232,240,.9);border-radius:22px;box-shadow:0 18px 40px -16px rgba(15,40,80,.45);transform:translateY(140%);transition:transform .45s cubic-bezier(.2,1.2,.4,1)}
  .mbar.show{transform:none}
  .mbar .btn{padding:13px 14px;font-size:14.5px;justify-content:center}
  .mbar .btn-primary{flex:1}
  .mbar .btn-zalo{width:50px;padding:0;font-size:20px}
  .toast{bottom:calc(90px + env(safe-area-inset-bottom))}
}
@media (max-width:360px){.mbar .mb-price{display:none}h1{font-size:32px}}
@keyframes sheet{from{transform:translateY(100%)}}
@keyframes flowlineV{to{background-position:0 -200%}}
.toast{opacity:0;transition:transform .4s cubic-bezier(.2,1.4,.4,1),opacity .25s}
.toast.show{opacity:1}