/* Seller Profit — bảng màu HTX MEDIA */
:root{
  --navy:#0D3B8E;--blue:#1E5BB8;--blue-soft:rgba(30,91,184,.10);
  --silver:#BFC5CD;--steel:#7D8793;--ink:#2F343A;--white:#fff;
  --bg:#f6f8fb;--panel:#fff;--border:rgba(191,197,205,.72);
  --green:#13875d;--green-soft:#eaf8f2;--red:#c23b3b;--red-soft:#fff0f0;
  --orange:#a76717;--orange-soft:#fff7e8;
  --shadow:0 10px 30px rgba(13,59,142,.08);--shadow-lg:0 24px 58px rgba(13,59,142,.15);
  --radius:16px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}
button,input{font:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* Thanh trên */
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo{width:36px;height:36px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:900;letter-spacing:-.04em}
.brand b{font-size:16px}.brand small{display:block;font-size:11px;color:var(--steel);line-height:1.1}
.nav-links{display:flex;gap:8px;align-items:center}

/* Nút */
.btn{border:1px solid var(--border);background:#fff;color:var(--ink);padding:9px 16px;border-radius:10px;cursor:pointer;font-weight:650;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:.16s}
.btn:hover{border-color:var(--steel)}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff;box-shadow:0 7px 18px rgba(13,59,142,.2)}
.btn.primary:hover{background:var(--blue);border-color:var(--blue)}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}

/* Hero */
.hero{padding:64px 0 40px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:40px;align-items:start}
.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.09em;color:var(--blue);font-weight:800}
.hero h1{font-size:42px;line-height:1.15;letter-spacing:-.035em;margin:10px 0 16px}
.hero h1 em{font-style:normal;color:var(--red)}
.lead{font-size:17px;color:#55606e;max-width:560px}
.checks{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.checks li{display:flex;gap:10px;align-items:flex-start}
.checks li:before{content:"✓";flex:none;width:22px;height:22px;border-radius:7px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;font-size:12px;font-weight:900;margin-top:2px}

/* Thẻ đăng nhập */
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.auth-card{box-shadow:var(--shadow-lg)}
.tabs{display:grid;grid-template-columns:1fr 1fr;background:rgba(191,197,205,.18);padding:4px;border-radius:11px;margin-bottom:18px}
.tabs button{border:0;background:transparent;padding:8px;border-radius:8px;cursor:pointer;font-weight:700;color:var(--steel)}
.tabs button.active{background:#fff;color:var(--navy);box-shadow:0 1px 5px rgba(13,59,142,.1)}
form{display:grid;gap:12px}
label{display:grid;gap:5px;font-size:13px;font-weight:650}
input{border:1px solid var(--border);border-radius:10px;padding:10px 12px;outline:none;background:#fff;color:var(--ink)}
input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,91,184,.14)}
.hint{font-size:12px;color:var(--steel);margin:0}
.msg{padding:10px 12px;border-radius:10px;font-size:13px;display:none}
.msg.show{display:block}
.msg.err{background:var(--red-soft);color:#8f3030;border:1px solid #f1d2d2}
.msg.ok{background:var(--green-soft);color:#11704d;border:1px solid #d7f0e5}

/* Các mục */
section{padding:48px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 28px}
.section-head h2{font-size:28px;letter-spacing:-.025em;margin:6px 0 8px}
.section-head p{color:#55606e;margin:0}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feature h3{margin:10px 0 6px;font-size:16px}
.feature p{margin:0;color:#55606e;font-size:14px}
.icon{width:38px;height:38px;border-radius:11px;background:var(--blue-soft);color:var(--navy);display:grid;place-items:center;font-weight:900}

/* Ví dụ lãi lỗ */
.pnl{max-width:560px;margin:0 auto}
.pnl-line{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid rgba(191,197,205,.45);font-size:14px}
.pnl-line span:last-child{font-variant-numeric:tabular-nums;font-weight:650}
.pnl-line.minus span:last-child{color:var(--red)}
.pnl-line.total{border-bottom:0;border-top:2px solid var(--ink);margin-top:4px;padding-top:12px;font-size:16px;font-weight:800}
.pnl-note{font-size:12px;color:var(--steel);margin-top:10px;text-align:center}

/* Bảng giá */
.prices{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch}
.price{display:flex;flex-direction:column;gap:6px}
.price.best{border:2px solid var(--navy);position:relative}
.price .tag{position:absolute;top:-12px;left:22px;background:var(--navy);color:#fff;font-size:11px;font-weight:800;padding:3px 10px;border-radius:99px}
.price h3{margin:0;font-size:15px;color:var(--steel)}
.price .amount{font-size:30px;font-weight:850;letter-spacing:-.03em}
.price .amount small{font-size:14px;font-weight:600;color:var(--steel)}
.price ul{padding-left:18px;margin:8px 0 14px;color:#55606e;font-size:14px;flex:1}

footer{border-top:1px solid var(--border);padding:24px 0 36px;color:var(--steel);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* Trang app */
.app-main{padding:36px 0}
.welcome h1{font-size:26px;letter-spacing:-.03em;margin:4px 0 6px}
.steps{display:grid;gap:10px;margin-top:18px;counter-reset:s}
.step{display:grid;grid-template-columns:30px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid rgba(191,197,205,.45)}
.step:last-child{border-bottom:0}
.step:before{counter-increment:s;content:counter(s);width:26px;height:26px;border-radius:8px;background:var(--blue-soft);color:var(--navy);display:grid;place-items:center;font-size:12px;font-weight:800}
.step strong{display:block;font-size:14px}.step small{color:var(--steel)}
.badge{font-size:11px;font-weight:750;padding:4px 9px;border-radius:99px;background:rgba(191,197,205,.25);color:var(--ink);white-space:nowrap}
.badge.soon{background:var(--orange-soft);color:#8b5816}
.account{font-size:13px;color:var(--steel);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .grid3,.prices{grid-template-columns:1fr}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .hero{padding:36px 0 24px}
  .hero h1{font-size:28px}
  .nav-links .btn:not(.primary){display:none}
  .brand small{display:none}
  .account{display:none}
  .step{grid-template-columns:30px 1fr}
  .step .badge{grid-column:2;justify-self:start}
}