:root{--lime:#C1F11D;--mint:#7CFFB2;--ink:#0B0B0B;--ink2:#161616;--grey:#8A8A8A;--line:#E7E7E4;--soft:#F4F4F2;--paper:#fff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,-apple-system,"Segoe UI",sans-serif;background:var(--paper);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;padding-bottom:76px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.row{display:flex;justify-content:space-between;align-items:center}
h2{font-size:clamp(28px,4.6vw,42px);font-weight:900;letter-spacing:-.025em;line-height:1.12;margin-bottom:12px}
h3{font-size:19px;font-weight:800;line-height:1.3}
.sub{color:#555;margin-bottom:24px;max-width:640px}
.muted{color:var(--grey)}
.tag{display:inline-block;background:var(--lime);color:var(--ink);font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase;padding:7px 14px;border-radius:50px}
.tag.dark{background:var(--ink);color:var(--lime)}
.cta{display:inline-block;background:linear-gradient(90deg,var(--lime),var(--mint));color:var(--ink);font-weight:800;font-size:17px;padding:17px 30px;border-radius:50px;text-decoration:none;border:0;cursor:pointer;white-space:nowrap;box-shadow:0 10px 30px rgba(193,241,29,.25);transition:transform .15s}
.cta:hover{transform:translateY(-2px)}
.cta.full{display:block;width:100%;text-align:center}
.micro{font-size:13px;color:var(--grey);margin-top:12px}
section.wrap{padding-top:72px}

/* nav */
.top{position:sticky;top:0;z-index:20;background:rgba(11,11,11,.92);backdrop-filter:blur(10px);color:#fff}
.top .row{height:58px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.02em}.logo span{color:var(--lime)}
.mini-cta{color:var(--ink);background:#fff;font-weight:700;font-size:14px;padding:8px 16px;border-radius:50px;text-decoration:none}

/* hero */
.hero{background:var(--ink);color:#fff;border-radius:0 0 48px 48px;padding:56px 0 72px;overflow:hidden;position:relative}
.hero:before{content:"";position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(193,241,29,.28),transparent 65%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;position:relative}
h1{font-size:clamp(38px,6.4vw,66px);line-height:1.03;font-weight:900;letter-spacing:-.035em;margin:22px 0 18px}
h1 em{font-style:normal;color:var(--lime)}
.lead{font-size:clamp(17px,2.2vw,20px);color:#CFCFCF;margin-bottom:28px;max-width:560px}
.phone{justify-self:center;width:min(300px,100%);border-radius:40px;border:8px solid #222;overflow:hidden;background:#111;box-shadow:0 30px 80px rgba(0,0,0,.5);position:relative}
.phone img{display:block;width:100%;height:auto}
.phone figcaption{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);font-size:11px;color:#999;background:rgba(0,0,0,.6);padding:4px 10px;border-radius:50px;white-space:nowrap}

/* pains */
.pains{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.pains p{background:var(--soft);border-radius:28px;padding:24px;font-size:17px;font-weight:500}
.turn{margin-top:22px;font-size:19px;max-width:700px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.step{border:1px solid var(--line);border-radius:28px;padding:24px;display:flex;flex-direction:column;gap:14px}
.step .n{width:42px;height:42px;border-radius:50%;background:var(--ink);color:var(--lime);font-weight:900;display:grid;place-items:center}
.step p{color:#555;margin-top:6px}

/* videos */
.videos{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:22px}
.videos a{display:block;background:var(--ink);color:#fff;border-radius:28px;padding:20px;text-decoration:none;font-weight:700}
.videos a small{display:block;color:var(--lime);font-weight:600;margin-top:6px}

/* stack */
.stack{border:1px solid var(--line);border-radius:40px;padding:10px;background:var(--soft)}
.item{display:flex;gap:18px;justify-content:space-between;align-items:flex-start;background:#fff;border-radius:30px;padding:22px 24px;margin-bottom:8px}
.item.core{border:2px solid var(--ink)}
.item p{color:#555;font-size:15px;margin-top:4px}
.item s,.total s{color:var(--grey);font-weight:700;white-space:nowrap}
.lbl{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#5d7a00;margin-bottom:4px}
.item.core .lbl{color:var(--ink)}
.total{display:flex;justify-content:space-between;padding:14px 26px;font-weight:700}
.price-box{background:var(--ink);color:#fff;border-radius:30px;padding:30px 24px;text-align:center;display:grid;gap:8px;justify-items:center}
.price-box b{font-size:clamp(40px,7vw,56px);font-weight:900;color:var(--lime);letter-spacing:-.03em;line-height:1.1}
.price-box small{color:#aaa}
.price-box .cta{margin-top:10px}

/* gift */
.gift-card{background:linear-gradient(135deg,#F3FBD7,#fff 60%);border:1px solid #E3F1B5;border-radius:40px;padding:34px 30px}
.gift-card h2{margin-top:14px}
.gift-card p{max-width:640px;color:#333;font-size:17px}

/* needs */
.needs{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.needs li{border:1px solid var(--line);border-radius:28px;padding:22px;display:grid;gap:6px}
.needs span{color:#555;font-size:15px}

/* setup */
.setup{background:var(--soft);border-radius:40px;padding:32px 30px;display:flex;gap:24px;justify-content:space-between;align-items:center;flex-wrap:wrap}
.setup h2{margin-top:14px}.setup p{color:#444;max-width:520px}
.setup-price{display:grid;gap:10px;justify-items:start}
.setup-price b{font-size:32px;font-weight:900}
.ghost{background:#fff;border:1.5px solid var(--ink);color:var(--ink);font:700 15px Inter,sans-serif;padding:12px 20px;border-radius:50px;cursor:pointer;white-space:nowrap}

/* promise */
.promise{display:grid;gap:12px;max-width:720px;font-size:17px}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary,.opt summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker,.opt summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--grey);font-weight:900}
.faq details[open] summary:after{content:"–"}
.faq details p{color:#444;margin-top:8px;max-width:720px}

/* checkout */
#mua{padding-bottom:40px}
.checkout{max-width:520px;margin:0 auto;background:#fff;border:2px solid var(--ink);border-radius:40px;padding:32px 26px}
.checkout h2{font-size:28px;margin-bottom:20px}
form{display:grid;gap:14px}
label{display:grid;gap:6px;font-weight:600;font-size:14px}
input:not([type=checkbox]){font:500 17px Inter,sans-serif;padding:14px 16px;border:1.5px solid var(--line);border-radius:18px;background:var(--soft);width:100%;outline:none}
input:focus{border-color:var(--ink);background:#fff}
.opt summary{font-size:14px;color:#555;font-weight:600;justify-content:flex-start}
.opt summary:before{content:"+ "}
.opt[open] summary{margin-bottom:10px}
.coupon{display:flex;gap:8px}
.coupon button{flex:none;background:var(--ink);color:#fff;border:0;border-radius:18px;padding:0 18px;font:700 15px Inter,sans-serif;cursor:pointer}
#coupon-msg{display:block;margin-top:6px;font-weight:600}
#coupon-msg.good{color:#3d7a00}#coupon-msg.bad{color:#c0392b}
.bump{display:flex;gap:12px;align-items:flex-start;border:1.5px dashed #b9d84a;background:#FAFDEB;border-radius:20px;padding:14px 16px;font-weight:500;cursor:pointer}
.bump input{width:22px;height:22px;margin-top:2px;accent-color:var(--ink);flex:none}
.bump small{color:#666}
.sum span{white-space:nowrap}
.sum{display:flex;justify-content:space-between;align-items:baseline;padding:6px 2px;border-top:1px solid var(--line);margin-top:4px;padding-top:14px}
.sum b{font-size:28px;font-weight:900}
.err{color:#c0392b;font-weight:600;min-height:1em}
#pay-step,#done-step{text-align:center}
#qr{width:min(300px,100%);height:auto;border-radius:20px;border:1px solid var(--line);margin:4px auto 14px;display:block}
.bank{display:grid;gap:8px;text-align:left;background:var(--soft);border-radius:20px;padding:16px 18px}
.bank div{display:flex;justify-content:space-between;gap:12px}
.bank dt{color:#666}.bank dd{font-weight:700;text-align:right}
.bank .code{font-family:ui-monospace,Menlo,monospace;background:var(--lime);padding:0 8px;border-radius:8px}
.waiting{margin-top:16px;color:#555;font-weight:500}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--lime);margin-right:8px;animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.25}}
.ok{width:64px;height:64px;border-radius:50%;background:var(--lime);display:grid;place-items:center;font-size:30px;font-weight:900;margin:0 auto 14px}
#done-step h3{margin-bottom:18px;font-size:22px}
#done-step .sub{margin:16px auto 0}

.foot{color:var(--grey);font-size:13px;padding:30px 20px 20px}
.sticky{position:fixed;left:16px;right:16px;bottom:14px;z-index:30;display:none;text-align:center;background:var(--ink);color:#fff;font-weight:800;padding:16px;border-radius:50px;text-decoration:none;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.sticky span{color:var(--lime)}

@media (max-width:820px){
  .hero-grid,.pains,.steps,.needs{grid-template-columns:1fr}
  .hero{padding:40px 0 56px;border-radius:0 0 36px 36px}
  .phone{width:220px;border-width:6px;border-radius:32px}
  .sticky{display:block}
  section.wrap{padding-top:56px}
  .item{flex-direction:column;gap:8px;padding:20px}
  .checkout{padding:26px 18px;border-radius:32px}
  .setup{padding:26px 22px}
}
@media (min-width:821px){body{padding-bottom:0}}

/* chi phí: thuê editor vs trợ lý */
.vs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:6px}
.vs-col{border:1px solid var(--line);border-radius:30px;padding:24px;display:grid;gap:8px;align-content:start}
.vs-col p{color:#555;font-size:15px}
.vs-col .big{font-size:clamp(30px,5vw,40px);font-weight:900;letter-spacing:-.03em;line-height:1.1;color:#9a9a9a;text-decoration:line-through;text-decoration-thickness:3px}
.vs-col .big small{display:inline-block;font-size:15px;font-weight:600;margin-left:4px}
.vs-col.win{background:var(--ink);border-color:var(--ink);color:#fff}
.vs-col.win .big{color:var(--lime);text-decoration:none}
.vs-col.win p{color:#cfcfcf}
.vs-col.win .lbl{color:var(--lime)}
.bonus-note{margin-top:16px;background:var(--soft);border-radius:24px;padding:18px 22px;max-width:760px}
@media (max-width:820px){.vs{grid-template-columns:1fr}}

/* chốt cuối trang */
.final{background:var(--ink);color:#fff;border-radius:40px;padding:40px 28px;text-align:center;display:grid;gap:6px;justify-items:center}
.final h2{color:#fff;max-width:640px}
.final .sub{color:#bdbdbd;margin:0 auto 14px}

/* popup mua 3 bước */
body.locked{overflow:hidden}
dialog#buy{border:0;padding:0;margin:auto;width:min(520px,calc(100% - 24px));max-height:calc(100dvh - 24px);border-radius:32px;background:#fff;color:var(--ink);display:none;flex-direction:column;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.45)}
dialog#buy[open]{display:flex;animation:pop .22s ease-out}
dialog#buy::backdrop{background:rgba(8,8,8,.72);backdrop-filter:blur(4px)}
@keyframes pop{from{transform:translateY(16px);opacity:0}}
.m-head{display:flex;align-items:center;gap:10px;padding:16px 18px 12px;border-bottom:1px solid var(--line)}
.m-steps{list-style:none;display:flex;gap:6px;flex:1;counter-reset:s}
.m-steps li{flex:1;font-size:12px;font-weight:700;color:#9a9a9a;padding-top:8px;border-top:4px solid var(--line);counter-increment:s;white-space:nowrap}
.m-steps li:before{content:counter(s) " · "}
.m-steps li.on{color:var(--ink);border-color:var(--lime)}
.m-x{flex:none;width:36px;height:36px;border-radius:50%;border:0;background:var(--soft);font-size:22px;line-height:1;cursor:pointer;color:var(--ink)}
.m-body{padding:22px 22px 26px;overflow-y:auto}
.m-body h2{font-size:26px;margin-bottom:16px}
#step2,#step3{text-align:center}
.link{background:none;border:0;color:#555;font:600 14px Inter,sans-serif;text-decoration:underline;cursor:pointer;margin-top:14px;display:inline-block}
.guide{text-align:left;margin:18px 0 0;padding:0;list-style:none;counter-reset:g;display:grid;gap:8px}
.guide li{counter-increment:g;background:var(--soft);border-radius:16px;padding:12px 14px 12px 46px;position:relative;font-size:15px}
.guide li:before{content:counter(g);position:absolute;left:12px;top:11px;width:24px;height:24px;border-radius:50%;background:var(--ink);color:var(--lime);font-weight:800;font-size:13px;display:grid;place-items:center}
kbd{font:600 13px ui-monospace,Menlo,monospace;background:#fff;border:1px solid var(--line);border-radius:6px;padding:1px 6px}
@media (max-width:520px){
  dialog#buy{width:100%;max-width:100%;max-height:94dvh;margin:auto 0 0;border-radius:28px 28px 0 0}
  .m-body{padding:20px 18px 28px}
  .m-steps li{font-size:11px}
}

/* trang cảm ơn */
.thanks-hero{text-align:center}
.thanks-hero .wrap{display:grid;justify-items:center;gap:6px;position:relative}
.thanks-hero .lead{margin:0 auto 20px}
.thanks-page{padding-bottom:0}