/* =========================================================
   ONE by Phonefarm.vn — stylesheet
   Tông: trắng / đen / đỏ
   ========================================================= */
:root{
  --red:#E10E1F; --red-d:#B00A17; --red-l:#FF3B4A;
  --ink:#0A0A0B; --ink-2:#16161A; --ink-3:#2A2A31;
  --mut:#6B6B76; --mut-2:#9A9AA5;
  --bg:#FFFFFF; --bg-soft:#F6F6F8; --line:#E7E7EC;
  --wrap:1600px; --gutter:clamp(16px,2.6vw,48px); --r:18px; --r-s:12px;
  --sh:0 4px 24px rgba(10,10,11,.06);
  --sh-h:0 18px 48px rgba(10,10,11,.14);
  --sh-red:0 12px 32px rgba(225,14,31,.28);
  --ease:cubic-bezier(.22,.8,.3,1);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h);-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 16px/1.65 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol,dl,dd{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
.ico{width:1.15em;height:1.15em;flex:none}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-width:840px}
.hl{color:var(--red)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:999;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:6px}

/* ---------- Buttons ---------- */
.btn{
  --bg-b:var(--ink);--fg-b:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:14px 26px;border:0;border-radius:999px;cursor:pointer;
  background:var(--bg-b);color:var(--fg-b);font-weight:600;font-size:15px;line-height:1.2;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn .ico{transition:transform .25s var(--ease)}
.btn:hover .ico{transform:translateX(3px)}
.btn--red{--bg-b:var(--red);box-shadow:var(--sh-red)}
.btn--red:hover{--bg-b:var(--red-d);box-shadow:0 16px 40px rgba(225,14,31,.36)}
.btn--dark{--bg-b:var(--ink)}
.btn--dark:hover{--bg-b:var(--ink-3)}
.btn--ghost{--bg-b:transparent;--fg-b:var(--ink);border:1.5px solid var(--line)}
.btn--ghost:hover{border-color:var(--ink);box-shadow:var(--sh)}
.btn--sm{padding:10px 20px;font-size:14px}
.btn--full{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;background:rgba(225,14,31,.08);
  color:var(--red);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.tag--on-dark{background:rgba(225,14,31,.18);color:var(--red-l)}
.pill{
  display:inline-flex;align-items:center;gap:9px;padding:8px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  font-size:13.5px;font-weight:600;color:var(--ink-3);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--red);box-shadow:0 0 0 0 rgba(225,14,31,.5);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(225,14,31,0)}100%{box-shadow:0 0 0 0 rgba(225,14,31,0)}}

/* ---------- Nav ---------- */
.nav{
  position:fixed;inset:0 0 auto;z-index:100;
  background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s,background .3s;
}
.nav.is-stuck{border-bottom-color:var(--line);box-shadow:0 2px 18px rgba(10,10,11,.05)}
.nav__in{display:flex;align-items:center;gap:18px;height:var(--nav-h)}
.brand img{height:40px;width:auto;transition:transform .3s var(--ease)}
.brand:hover img{transform:scale(1.04)}
.nav__links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__links>a{
  position:relative;padding:8px 13px;border-radius:999px;white-space:nowrap;
  font-size:14.5px;font-weight:500;color:var(--mut);transition:color .22s,background .22s;
}
.nav__links>a:hover{color:var(--ink);background:var(--bg-soft)}
.nav__links>a.is-active{color:var(--ink);font-weight:600}
.nav__links>a.is-active::after{
  content:"";position:absolute;left:50%;bottom:1px;translate:-50% 0;
  width:18px;height:2.5px;border-radius:2px;background:var(--red);animation:grow .3s var(--ease);
}
@keyframes grow{from{width:0}}
.nav__right{display:flex;align-items:center;gap:10px}
.nav__cta-m{display:none}
.burger{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;cursor:pointer}
.burger .ico{width:22px;height:22px}
.burger__close{display:none}
.nav.is-open .burger__open{display:none}
.nav.is-open .burger__close{display:block}
.nav__progress{height:2px;background:transparent}
.nav__progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),var(--red-l));transition:width .1s linear}
.nav__scrim{position:fixed;inset:0;z-index:99;background:rgba(10,10,11,.45);backdrop-filter:blur(2px);animation:fade .25s}
@keyframes fade{from{opacity:0}}

/* ---------- Sections ---------- */
.sec{padding:clamp(64px,8vw,118px) 0;position:relative}
.sec--soft{background:var(--bg-soft)}
.sec--dark{background:var(--ink);color:#fff}
.sec--dark p{color:#B9B9C4}
.sec__head{max-width:860px;margin:0 auto clamp(40px,5vw,64px);text-align:center}
.sec__head h2{margin:18px 0 14px;font-size:clamp(28px,4.4vw,46px);line-height:1.15;font-weight:800;letter-spacing:-.02em}
.sec__head p{color:var(--mut);font-size:clamp(15px,1.6vw,17.5px)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + clamp(40px,6vw,80px)) 0 clamp(60px,7vw,100px);overflow:hidden}
.hero__bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5}
.orb--1{width:46vw;height:46vw;max-width:560px;max-height:560px;top:-12%;right:-8%;background:radial-gradient(circle,rgba(225,14,31,.35),transparent 68%);animation:drift 16s ease-in-out infinite}
.orb--2{width:38vw;height:38vw;max-width:460px;max-height:460px;bottom:-14%;left:-10%;background:radial-gradient(circle,rgba(10,10,11,.16),transparent 68%);animation:drift 20s ease-in-out infinite reverse}
@keyframes drift{50%{transform:translate(4%,6%) scale(1.08)}}
.grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000,transparent 75%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,#000,transparent 75%);opacity:.6;
}
.hero__in{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,4vw,60px);align-items:center}
.hero h1{margin:20px 0 20px;font-size:clamp(34px,5.6vw,62px);line-height:1.08;font-weight:800;letter-spacing:-.03em}
.lead{max-width:600px;color:var(--mut);font-size:clamp(15.5px,1.7vw,18px)}
.lead b{color:var(--ink);font-weight:600}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.hero__stats b{display:block;font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:-.02em}
.hero__stats span{font-size:12.5px;color:var(--mut);line-height:1.4}
.hero__down{
  position:absolute;left:50%;bottom:22px;translate:-50% 0;z-index:2;
  width:42px;height:42px;display:grid;place-items:center;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);color:var(--ink);animation:bob 2.2s ease-in-out infinite;
}
@keyframes bob{50%{transform:translateY(7px)}}

/* console mockup */
.hero__art{position:relative;min-width:0}
.console{
  min-width:0;background:var(--ink);border-radius:var(--r);overflow:hidden;
  box-shadow:0 30px 70px rgba(10,10,11,.28);transform:perspective(1200px) rotateY(-7deg) rotateX(3deg);
  transition:transform .6s var(--ease);
}
.hero__art:hover .console{transform:perspective(1200px) rotateY(-2deg) rotateX(1deg)}
.console__bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:#000;border-bottom:1px solid #1E1E25}
.console__bar i{width:10px;height:10px;border-radius:50%;background:#2E2E38}
.console__bar i:first-child{background:var(--red)}
.console__bar span{margin-left:10px;font-size:12px;color:#7A7A88;font-weight:500}
.console__body{display:grid;grid-template-columns:52px 1fr;gap:14px;padding:16px}
.console__side{display:flex;flex-direction:column;gap:9px}
.sk{height:32px;border-radius:9px;background:#1B1B22}
.sk--red{background:rgba(225,14,31,.9)}
.console__farm{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}
.mini{position:relative;aspect-ratio:9/16;border-radius:7px;background:#15151B;border:1px solid #23232C;overflow:hidden;animation:pop .5s var(--ease) both;animation-delay:calc(var(--i)*.055s)}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.94)}}
.mini__scr{position:absolute;inset:0;background:linear-gradient(180deg,rgba(225,14,31,.22),transparent 55%);opacity:0;animation:blink 3.4s ease-in-out infinite;animation-delay:calc(var(--i)*.28s)}
@keyframes blink{0%,100%{opacity:0}40%,60%{opacity:1}}
.mini__led{position:absolute;right:4px;top:4px;width:5px;height:5px;border-radius:50%;background:#37D67A;animation:led 2s ease-in-out infinite;animation-delay:calc(var(--i)*.15s)}
@keyframes led{50%{opacity:.25}}
.console__foot{padding:12px 16px;border-top:1px solid #1E1E25;background:#0D0D12;min-width:0}
.console__foot .live{max-width:100%;flex-wrap:wrap}
.live{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:#9A9AA5;font-weight:500}
.live i{width:7px;height:7px;border-radius:50%;background:#37D67A;animation:led 1.4s infinite}
.live--on-dark{color:#9A9AA5}
.float-card{
  position:absolute;display:flex;align-items:center;gap:11px;
  padding:12px 16px;border-radius:14px;background:#fff;box-shadow:var(--sh-h);
  font-size:13px;animation:floaty 5s ease-in-out infinite;
}
.float-card .ico{width:22px;height:22px;color:var(--red)}
.float-card b{display:block;font-size:13.5px;font-weight:700}
.float-card span{color:var(--mut);font-size:12px}
.float-card--a{top:-18px;left:-22px}
.float-card--b{bottom:-20px;right:-16px;animation-delay:1.6s}
@keyframes floaty{50%{transform:translateY(-12px)}}

/* ---------- Feature cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  position:relative;display:block;padding:30px 26px 26px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.card::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,var(--red),var(--red-l));transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-h);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card__ico{
  display:grid;place-items:center;width:52px;height:52px;border-radius:15px;
  background:var(--bg-soft);color:var(--ink);margin-bottom:18px;transition:background .3s,color .3s,transform .4s var(--ease);
}
.card__ico .ico{width:25px;height:25px}
.card:hover .card__ico{background:var(--red);color:#fff;transform:rotate(-6deg) scale(1.06)}
.card h3{font-size:19px;font-weight:700;margin-bottom:9px;letter-spacing:-.01em}
.card p{color:var(--mut);font-size:14.8px}
.card__more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--red);opacity:0;transform:translateY(6px);transition:.3s var(--ease)}
.card:hover .card__more{opacity:1;transform:none}

/* ---------- Split / control board ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,60px);align-items:center}
.split__art{position:relative;min-width:0}
.board{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;padding:20px;border-radius:var(--r);background:#111117;border:1px solid #23232C}
.board__cell{aspect-ratio:9/16;border-radius:7px;background:#191920;border:1px solid #26262F;position:relative;overflow:hidden}
.board__cell i{position:absolute;inset:0;background:linear-gradient(180deg,rgba(225,14,31,.55),rgba(225,14,31,0) 60%);opacity:0;animation:wave 4s ease-in-out infinite;animation-delay:calc(var(--i)*.09s)}
@keyframes wave{0%,100%{opacity:0}35%,55%{opacity:1}}
.board__hint{margin-top:16px;text-align:center}
.ticks{display:grid;gap:18px}
.ticks li{display:flex;gap:14px;align-items:flex-start}
.ticks b{display:block;font-size:16.5px;font-weight:700;margin-bottom:3px}
.ticks p{font-size:14.6px;color:var(--mut)}
.sec--dark .ticks p{color:#9A9AA5}
.tick{display:grid;place-items:center;width:28px;height:28px;flex:none;border-radius:50%;background:var(--red);color:#fff;margin-top:3px}
.tick .ico{width:15px;height:15px;stroke-width:2.6}
.ticks--tight{gap:12px}
.ticks--tight p{font-size:14.2px}

/* ---------- Cloud ---------- */
.cloud{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,4vw,56px);align-items:center}
.cloud__diagram{position:relative;aspect-ratio:600/340;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.cloud__wires{position:absolute;inset:0;width:100%;height:100%}
.cloud__wires path{fill:none;stroke:var(--red);stroke-width:1.6;stroke-dasharray:6 8;opacity:.55;animation:dash 1.6s linear infinite}
@keyframes dash{to{stroke-dashoffset:-28}}
.node{
  position:absolute;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:12px 10px;border-radius:14px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh);font-size:11.5px;font-weight:600;text-align:center;width:23%;min-width:96px;
}
.node .ico{width:22px;height:22px;color:var(--ink)}
.node--dev{animation:floaty 6s ease-in-out infinite}
.node--a{left:3%;top:10%}
.node--b{left:3%;bottom:10%;animation-delay:.8s}
.node--c{right:3%;top:10%;animation-delay:1.6s}
.node--d{right:3%;bottom:10%;animation-delay:2.4s}
.node--cloud{left:50%;top:50%;translate:-50% -50%;background:var(--red);border-color:var(--red);color:#fff;box-shadow:var(--sh-red);z-index:2;width:26%}
.node--cloud .ico{color:#fff;width:26px;height:26px}
.ping{position:absolute;inset:0;border-radius:14px;border:2px solid var(--red);animation:ping 2.4s var(--ease) infinite}
@keyframes ping{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.5);opacity:0}}
.steps{display:grid;gap:8px}
.steps li{display:flex;gap:16px;padding:16px;border-radius:var(--r-s);transition:background .3s,transform .3s var(--ease)}
.steps li:hover{background:var(--bg-soft);transform:translateX(5px)}
.steps__n{font-size:15px;font-weight:800;color:var(--red);flex:none;padding-top:1px}
.steps b{display:block;font-size:16.5px;font-weight:700;margin-bottom:3px}
.steps p{font-size:14.5px;color:var(--mut)}
.banner{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  margin-top:clamp(36px,4vw,56px);padding:clamp(24px,3vw,34px);border-radius:var(--r);
  background:var(--ink);color:#fff;
}
.banner b{display:block;font-size:clamp(18px,2.2vw,23px);font-weight:700;margin-bottom:5px}
.banner span{color:#9A9AA5;font-size:15px}

/* ---------- Automation ---------- */
.auto__flow{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:0;margin-bottom:clamp(34px,4vw,54px)}
.fstep{
  display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  font-size:14px;font-weight:600;white-space:nowrap;
  animation:pop .5s var(--ease) both;animation-delay:calc(var(--i)*.1s);
}
.fstep__n{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-size:11.5px;font-weight:700}
.fline{width:26px;height:2px;background:linear-gradient(90deg,var(--red),rgba(225,14,31,.25));flex:none;animation:pop .5s var(--ease) both;animation-delay:calc(var(--i)*.1s + .05s)}
.auto__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.abox{padding:26px 22px;border-radius:var(--r);background:#fff;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.abox:hover{transform:translateY(-5px);box-shadow:var(--sh-h)}
.abox__ico{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:rgba(225,14,31,.09);color:var(--red);margin-bottom:15px}
.abox__ico .ico{width:23px;height:23px}
.abox b{display:block;font-size:17px;font-weight:700;margin-bottom:7px}
.abox p{font-size:14.3px;color:var(--mut)}

/* ---------- Rental ---------- */
.rent{display:grid;grid-template-columns:1.35fr .65fr;gap:26px;align-items:start}
.rent__table{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.rent__row{display:grid;grid-template-columns:1.2fr 1.3fr .8fr;gap:14px;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line);transition:background .25s}
.rent__row:last-child{border-bottom:0}
.rent__row--head{background:var(--ink);color:#fff;font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:14px 22px}
.rent__row:not(.rent__row--head):hover{background:var(--bg-soft)}
.rent__row.is-hot{background:rgba(225,14,31,.035)}
.rent__name{font-weight:700;font-size:15.5px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.hot{font-style:normal;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--red);color:#fff}
.rent__spec{font-size:13.8px;color:var(--mut)}
.rent__price{text-align:right;font-size:12.5px;color:var(--mut);white-space:nowrap}
.rent__price b{display:block;font-size:19px;font-weight:800;color:var(--red);letter-spacing:-.01em}
.rent__side{padding:28px 24px;border-radius:var(--r);background:var(--bg-soft);border:1px solid var(--line)}
.rent__side h3{font-size:18px;font-weight:700;margin-bottom:18px}
.rent__side .btn{margin-top:22px}
.rent__note{margin-top:14px;font-size:12.5px;color:var(--mut);line-height:1.55}

/* ---------- Pricing ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{
  position:relative;display:flex;flex-direction:column;padding:34px 28px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.plan:hover{transform:translateY(-6px);box-shadow:var(--sh-h)}
.plan--hot{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:var(--sh-h)}
.plan--hot .plan__note{color:#9A9AA5}
.plan__badge{position:absolute;top:-13px;left:50%;translate:-50% 0;padding:6px 16px;border-radius:999px;background:var(--red);color:#fff;font-size:12px;font-weight:700;white-space:nowrap;box-shadow:var(--sh-red)}
.plan h3{font-size:17px;font-weight:700;letter-spacing:.02em}
.plan__price{margin:12px 0 6px;font-size:clamp(28px,3.2vw,36px);font-weight:800;letter-spacing:-.02em;color:var(--red)}
.plan__note{font-size:14px;color:var(--mut);margin-bottom:22px}
.plan ul{display:grid;gap:11px;padding-top:22px;border-top:1px solid var(--line);margin-bottom:26px;flex:1}
.plan--hot ul{border-top-color:#2A2A31}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.plan li .ico{width:17px;height:17px;flex:none;margin-top:4px;color:var(--red);stroke-width:2.6}

/* ---------- Policy ---------- */
.pol{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pol__card{padding:30px 28px;border-radius:var(--r);background:#fff;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.pol__card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.pol__ico{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--ink);color:#fff;margin-bottom:16px}
.pol__ico .ico{width:23px;height:23px}
.pol__card h3{font-size:19px;font-weight:700;margin-bottom:14px}
.pol__card li{position:relative;padding-left:20px;margin-bottom:9px;font-size:14.5px;color:var(--mut);max-width:68ch}
.pol__card li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--red)}
.pol__link{display:inline-flex;align-items:center;gap:6px;margin-top:8px;font-size:14px;font-weight:600;color:var(--red)}
.pol__link:hover .ico{transform:translateX(3px)}
.pol__link .ico{transition:transform .25s var(--ease)}
.bankbox{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,3vw,44px);align-items:center;
  margin-top:24px;padding:clamp(26px,3.4vw,42px);border-radius:var(--r);background:var(--bg-soft);border:1px solid var(--line);
}
.bankbox h3{margin:14px 0 10px;font-size:clamp(20px,2.4vw,26px);font-weight:800;letter-spacing:-.01em}
.bankbox p{font-size:14.8px;color:var(--mut)}
.bankbox__r{display:grid;gap:12px}
.bankbox__r>div{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center;padding:14px 18px;border-radius:var(--r-s);background:#fff;border:1px solid var(--line)}
.bankbox dt{font-size:13.5px;color:var(--mut)}
.bankbox dd{margin:0;font-size:16px;font-weight:700}
.copy{cursor:pointer;display:inline-flex;align-items:center;gap:10px;color:var(--red)}
.copy i{font-style:normal;font-size:11.5px;font-weight:600;padding:3px 9px;border-radius:999px;background:rgba(225,14,31,.1)}
.copy.is-done i{background:#37D67A;color:#fff}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px}
.faq__i{background:#fff;border:1px solid var(--line);border-radius:var(--r-s);overflow:hidden;transition:box-shadow .3s,border-color .3s}
.faq__i[open]{box-shadow:var(--sh);border-color:transparent}
.faq__i summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;
}
.faq__i summary::-webkit-details-marker{display:none}
.faq__x{position:relative;width:18px;height:18px;flex:none}
.faq__x::before,.faq__x::after{content:"";position:absolute;inset:50% 0 auto;height:2px;border-radius:2px;background:var(--red);transition:transform .3s var(--ease)}
.faq__x::after{transform:rotate(90deg)}
.faq__i[open] .faq__x::after{transform:rotate(0)}
.faq__a{padding:0 22px 20px;animation:slidein .3s var(--ease)}
.faq__a p{font-size:15px;color:var(--mut)}
@keyframes slidein{from{opacity:0;transform:translateY(-6px)}}

/* ---------- Contact ---------- */
.ct{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(24px,3vw,44px);align-items:start}
.ct__info{display:grid;gap:10px}
.ct__row{display:flex;gap:15px;align-items:center;padding:17px 20px;border-radius:var(--r-s);background:#16161A;border:1px solid #23232C;transition:border-color .3s,transform .3s var(--ease),background .3s}
.ct__row:not(.ct__row--static):hover{border-color:var(--red);transform:translateX(5px);background:#1B1B22}
.ct__ico{display:grid;place-items:center;width:44px;height:44px;flex:none;border-radius:13px;background:var(--red);color:#fff}
.ct__ico .ico{width:21px;height:21px}
.ct__row b{display:block;font-size:13px;color:#8B8B98;font-weight:600;margin-bottom:2px}
.ct__row span{font-size:15.2px;font-weight:600;color:#fff}
.ct__form{padding:clamp(24px,3vw,34px);border-radius:var(--r);background:#fff;color:var(--ink);display:grid;gap:15px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.ct__form label{display:grid;gap:7px}
.ct__form label>span{font-size:13.5px;font-weight:600}
.ct__form input,.ct__form select,.ct__form textarea{
  width:100%;padding:13px 16px;border:1.5px solid var(--line);border-radius:var(--r-s);
  background:var(--bg-soft);font-size:15px;transition:border-color .25s,background .25s,box-shadow .25s;
}
.ct__form input:focus,.ct__form select:focus,.ct__form textarea:focus{
  outline:0;border-color:var(--red);background:#fff;box-shadow:0 0 0 4px rgba(225,14,31,.09);
}
.ct__form textarea{resize:vertical;min-height:100px}
.hp{position:absolute!important;left:-9999px!important;opacity:0}
.ct__form .btn--red{box-shadow:none}
.ct__form .btn--red:hover{box-shadow:var(--sh-red)}
.ct__priv{position:relative;font-size:12.5px;color:var(--mut);text-align:center}
.alert{padding:13px 16px;border-radius:var(--r-s);font-size:14.5px;font-weight:500}
.alert--ok{background:rgba(55,214,122,.12);color:#1C8B4B;border:1px solid rgba(55,214,122,.4)}
.alert--err{background:rgba(225,14,31,.08);color:var(--red-d);border:1px solid rgba(225,14,31,.3)}

/* ---------- Footer ---------- */
.foot{background:#08080A;color:#9A9AA5;padding:clamp(48px,6vw,76px) 0 0}
.foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px}
.foot__brand img{height:46px;width:auto;margin-bottom:16px;filter:invert(1)}
.foot__brand p{font-size:14.5px;max-width:320px}
.foot__social{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.foot__social a{padding:7px 14px;border-radius:999px;border:1px solid #1E1E25;font-size:13px;font-weight:500;transition:.25s var(--ease)}
.foot__social a:hover{background:var(--red);border-color:var(--red);color:#fff;transform:translateY(-2px)}
.foot__col{display:grid;gap:10px;align-content:start}
.foot__col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:6px}
.foot__col a{font-size:14.3px;transition:color .22s,transform .22s var(--ease)}
.foot__col a:hover{color:var(--red-l);transform:translateX(3px)}
.foot__addr{font-size:13.5px;line-height:1.55;margin-top:4px}
.foot__addr b{color:#CFCFD8}
.foot__bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin-top:44px;padding-block:22px;border-top:1px solid #16161C;font-size:13px}
.foot__bar b{color:#fff}

/* ---------- Floating helpers ---------- */
.totop{
  position:fixed;right:20px;bottom:88px;z-index:90;width:46px;height:46px;
  display:grid;place-items:center;border-radius:50%;background:var(--ink);color:#fff;
  box-shadow:var(--sh-h);opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s var(--ease);
}
.totop .ico{transform:rotate(180deg);width:20px;height:20px}
.totop.is-on{opacity:1;visibility:visible;transform:none}
.totop:hover{background:var(--red)}
.dock{display:none}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width:1080px){
  .nav__links>a{padding:8px 10px;font-size:13.8px}
  .auto__grid{grid-template-columns:repeat(2,1fr)}
  .fline{display:none}
  .auto__flow{gap:9px}
  .foot__grid{grid-template-columns:1fr 1fr;gap:30px}
}

/* Tablet */
@media (max-width:900px){
  :root{--nav-h:68px}
  .nav__links{
    position:fixed;inset:var(--nav-h) 0 auto;z-index:98;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:16px 20px 24px;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(10,10,11,.12);
    transform:translateY(-14px);opacity:0;visibility:hidden;transition:.3s var(--ease);
    max-height:calc(100vh - var(--nav-h));overflow-y:auto;
  }
  .nav.is-open .nav__links{transform:none;opacity:1;visibility:visible}
  .nav__links>a{padding:13px 14px;border-radius:var(--r-s);font-size:15.5px}
  .nav__links>a.is-active::after{display:none}
  .nav__links>a.is-active{background:rgba(225,14,31,.07);color:var(--red)}
  .nav__cta{display:none}
  .nav__cta-m{display:inline-flex;margin-top:12px}
  .nav__right{margin-left:auto}
  .burger{display:flex}
  .brand img{height:36px}

  .hero__in{grid-template-columns:1fr;text-align:center}
  .hero__copy{display:flex;flex-direction:column;align-items:center}
  .lead{margin-inline:auto}
  .hero__cta{justify-content:center}
  .hero__stats{width:100%;grid-template-columns:repeat(4,1fr)}
  .hero__art{width:100%;max-width:460px;min-width:0;margin-inline:auto;order:-1}
  .console__farm{grid-template-columns:repeat(6,1fr)}
  .console{transform:none}
  .float-card--a{left:-8px}
  .float-card--b{right:-8px}
  .hero__down{display:none}

  .cards{grid-template-columns:repeat(2,1fr)}
  .split,.cloud,.rent,.ct{grid-template-columns:1fr}
  .split__art{order:-1;max-width:460px;margin-inline:auto;width:100%}
  .cloud__diagram{order:-1}
  .plans{grid-template-columns:1fr;max-width:480px;margin-inline:auto}
  .plan--hot{order:-1}
  .bankbox{grid-template-columns:1fr}
  .rent__side{max-width:none}
}

/* Mobile */
@media (max-width:640px){
  .wrap{padding-inline:16px}
  .sec{padding:56px 0}
  body{font-size:15.5px}
  .hero{padding-top:calc(var(--nav-h) + 34px)}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:18px 12px;margin-top:34px}
  .hero__cta{width:100%;flex-direction:column}
  .hero__cta .btn{width:100%}
  .float-card{padding:10px 13px;font-size:12px}
  .float-card--a{top:-12px;left:-6px}
  .float-card--b{bottom:-12px;right:-6px}
  .console__body{grid-template-columns:40px 1fr;gap:10px;padding:12px}
  .console__farm{grid-template-columns:repeat(6,1fr);gap:7px}

  .cards,.auto__grid,.pol{grid-template-columns:1fr}
  .board{grid-template-columns:repeat(5,1fr);gap:7px;padding:14px}
  .cloud__diagram{aspect-ratio:1/1}
  .node{width:38%;min-width:0;font-size:10.5px;padding:10px 8px}
  .node--cloud{width:44%}
  .fstep{font-size:12.8px;padding:10px 14px}
  .fline{display:none}
  .auto__flow{gap:8px}

  .rent__row{grid-template-columns:1fr;gap:6px;padding:16px 18px;text-align:left}
  .rent__row--head{display:none}
  .rent__price{text-align:left}
  .rent__price b{display:inline;margin-right:4px}
  .f2{grid-template-columns:1fr}

  .foot{padding-bottom:86px}
  .foot__grid{grid-template-columns:1fr;gap:28px}
  .foot__bar{flex-direction:column;text-align:center;gap:6px}
  .totop{right:14px;bottom:82px;width:42px;height:42px}

  .dock{
    display:grid;grid-template-columns:repeat(3,1fr);position:fixed;inset:auto 0 0;z-index:95;
    background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-top:1px solid var(--line);
    padding:8px 8px calc(8px + env(safe-area-inset-bottom));
  }
  .dock__a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 4px;border-radius:12px;font-size:11.5px;font-weight:600;color:var(--ink)}
  .dock__a .ico{width:20px;height:20px}
  .dock__a--red{color:var(--red)}
  .dock__a:active{background:var(--bg-soft)}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ===== Ảnh do admin tải lên (thay cho hình minh hoạ mặc định) ===== */
.card__img{
  display:block;width:56px;height:56px;border-radius:14px;overflow:hidden;
  margin-bottom:16px;background:var(--bg-soft);border:1px solid var(--line);
}
.card__img img{width:100%;height:100%;object-fit:cover}
.sec__img{
  width:100%;height:auto;border-radius:var(--r);
  border:1px solid var(--line);box-shadow:var(--sh);background:var(--bg-soft);
}
.sec--dark .sec__img{border-color:rgba(255,255,255,.12)}
.hero__art--img{display:flex;align-items:center;justify-content:center}
.hero__art--img img{width:100%;border-radius:var(--r);box-shadow:var(--sh-h)}
.cloud__diagram:has(.sec__img){aspect-ratio:auto;background:none;border:0;overflow:visible}
.auto__flow--img{padding:0;background:none;border:0}
.bankbox__qr{width:150px;height:150px;object-fit:contain;margin-top:16px;border-radius:12px;background:#fff;padding:8px}

/* ===== Màn hình rộng: khung 1600px ===== */
@media (min-width:1280px){
  /* Giữ các khối minh hoạ đúng tỷ lệ gốc, phần rộng dôi ra dành cho cột chữ.
     Dùng width:100% + max-width (không dùng margin:auto) để grid item không bị co về min-content. */
  .hero__art{width:100%;max-width:600px;justify-self:end}
  .split__art{width:100%;max-width:620px;justify-self:center}
  .cloud__diagram{width:100%;max-width:740px;justify-self:center}
  /* nới nhẹ ruột thẻ cho hợp tỷ lệ khung rộng */
  .card{padding:34px 30px 30px}
  .plan{padding:38px 32px}
  .pol__card{padding:34px 32px}
  .rent__row{padding:20px 26px}
  .rent__row--head{padding:15px 26px}
  .rent__side{padding:32px 28px}
}
@media (min-width:1500px){
  /* 6 thẻ tính năng chia 3 cột vẫn đẹp, chỉ cần thoáng hơn */
  .cards{gap:24px}
  .plans{gap:26px}
  .pol{gap:24px}
  .auto__grid{gap:22px}
  .foot__grid{gap:48px}
}

/* ===== Tablet ngang (901–1200px): menu ngang phải vừa một dòng ===== */
@media (min-width:901px) and (max-width:1200px){
  .nav__in{gap:10px}
  .nav__links{gap:0}
  .nav__links>a{padding:8px 8px;font-size:13px}
  .nav__cta{padding:11px 18px;font-size:13.5px}
  .brand img{height:34px}
}
@media (min-width:901px) and (max-width:1060px){
  .nav__links>a{padding:7px 6px;font-size:12.3px}
  .nav__cta{padding:10px 14px;font-size:13px}
  .brand img{height:31px}
}

/* ===== Nút Download (nổi bật) ===== */
.btn--dl{position:relative;font-weight:700}
.btn--dl .ico{transition:transform .3s var(--ease)}
.btn--dl:hover .ico{transform:translateY(2px)}   /* mũi tên chúi xuống khi rê chuột */

/* bản lớn ở hero: to hơn, có quầng sáng và nhịp đập nhẹ để hút mắt */
.btn--dl-hero{
  padding:17px 34px;font-size:16.5px;
  box-shadow:0 14px 38px rgba(225,14,31,.34);
  animation:dlPulse 2.8s var(--ease) infinite;
}
.btn--dl-hero .ico{width:1.3em;height:1.3em}
.btn--dl-hero::after{
  content:"";position:absolute;inset:-4px;border-radius:999px;
  border:2px solid var(--red);opacity:0;pointer-events:none;
  animation:dlRing 2.8s var(--ease) infinite;
}
.btn--dl-hero:hover{animation-play-state:paused}
.btn--dl-hero:hover::after{animation-play-state:paused;opacity:0}
@keyframes dlPulse{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@keyframes dlRing{0%{opacity:.55;transform:scale(1)}70%,100%{opacity:0;transform:scale(1.12)}}

/* dòng chú thích nhỏ dưới nút */
.dl-note{margin-top:14px;font-size:13.5px;color:var(--mut)}

/* nút chưa gắn link: vẫn hiện, bấm không nhảy đi đâu */
button.btn[data-dl-empty]{cursor:pointer}

@media (prefers-reduced-motion:reduce){
  .btn--dl-hero,.btn--dl-hero::after{animation:none}
}
@media (max-width:640px){
  .btn--dl-hero{padding:15px 26px;font-size:15.5px}
  .dl-note{text-align:center}
}