*{box-sizing:border-box}html,body{margin:0;min-height:100%}
body{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:15.5px;color:#111318;background:#fff;-webkit-font-smoothing:antialiased}
.au{display:grid;grid-template-columns:minmax(0,49%) minmax(0,1fr);min-height:100vh;gap:0;padding:14px}
.au-side{position:relative;overflow:hidden;border-radius:22px;color:#fff;padding:56px 60px;display:flex;flex-direction:column;
  background:radial-gradient(700px 420px at 50% 115%,rgba(217,180,90,.28),transparent 70%),linear-gradient(180deg,#000 0%,#07080c 45%,#1b1d24 100%)}
.au-logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.au-logo .plate{background:#f3f1ec;border-radius:10px;padding:5px 9px;display:inline-flex}
.au-logo img{height:30px;width:auto;display:block}
.au-logo b{font-size:1.05rem;letter-spacing:.14em;font-weight:800}
.au-logo em{display:block;font-style:normal;font-size:.68rem;letter-spacing:.32em;color:#d9b45a;font-weight:700}
.au-hero{text-align:center;margin-top:13vh}
.au-hero h1{margin:0;font-size:clamp(1.8rem,3.2vw,3rem);font-weight:600;letter-spacing:-.01em;line-height:1.15}
.au-hero p{margin:22px auto 0;max-width:560px;font-size:clamp(1rem,1.45vw,1.45rem);color:rgba(255,255,255,.88);line-height:1.4}
/* điện thoại minh hoạ */
.au-phone{position:absolute;left:50%;top:max(480px,54vh);width:330px;height:600px;transform:translateX(-62%) rotate(-14deg);border-radius:54px;padding:12px;
  background:linear-gradient(145deg,#f3dc94,#9a6f22 35%,#3a2a10 60%,#d9b45a);box-shadow:0 40px 90px rgba(0,0,0,.6),inset 0 0 0 2px rgba(255,255,255,.15)}
.au-scr{width:100%;height:100%;border-radius:44px;background:linear-gradient(180deg,#0e0f14,#14161d);overflow:hidden;padding:26px 22px;font-size:11px;color:#c9ccd6;position:relative}
.au-scr .bar{display:flex;justify-content:space-between;color:#fff;font-weight:600;font-size:12px}
.au-scr .notch{position:absolute;top:10px;left:50%;transform:translateX(-50%);width:96px;height:24px;border-radius:14px;background:#000}
.au-scr .av{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,#f3dc94,#b88a2e);margin-top:18px}
.au-scr .lab{margin-top:14px;color:#9aa1b2}
.au-scr .big{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.02em}.au-scr .big small{font-size:11px;font-weight:600;color:#c9ccd6}
.au-scr .pn{color:#4fd19a;font-size:10px;margin-top:2px}
.au-scr .dep{position:absolute;right:22px;top:92px;background:#d9b45a;color:#1a1406;font-weight:700;border-radius:999px;padding:4px 12px;font-size:10px}
.au-scr svg{display:block;width:100%;height:120px;margin-top:14px}
.au-scr .tabs{display:flex;justify-content:space-around;color:#7d8394;margin-top:6px}.au-scr .tabs b{background:#2a2d36;color:#fff;border-radius:999px;padding:2px 8px}
.au-scr .ic{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:18px;text-align:center;color:#c9ccd6;font-size:9px}
.au-scr .ic i{display:block;width:28px;height:28px;border-radius:50%;margin:0 auto 4px;background:#262932;box-shadow:inset 0 0 0 1px rgba(217,180,90,.35)}
.au-scr .wl{margin-top:16px;font-weight:700;color:#fff;font-size:12px}
.au-scr .row{display:flex;justify-content:space-between;margin-top:8px;padding:8px 0;border-top:1px solid #23262f}
/* bên phải */
.au-main{position:relative;display:flex;align-items:center;justify-content:center;padding:40px 24px}
.au-top{position:absolute;top:44px;right:56px;display:flex;gap:10px}
.au-pill{display:inline-flex;align-items:center;gap:8px;background:#f3f4f6;border-radius:999px;padding:10px 18px;font-size:.92rem;color:#111318;text-decoration:none}
.au-pill:hover{background:#eceef2}
.au-form{width:100%;max-width:490px}
.au-form h2{margin:0 0 50px;font-size:clamp(1.6rem,2.3vw,2.25rem);font-weight:700;letter-spacing:-.01em}
.au-tabs{display:flex;gap:28px;margin-bottom:22px}
.au-tabs a{text-decoration:none}.au-tabs button,.au-tabs a{border:0;background:none;padding:0 0 12px;font:inherit;font-size:1.12rem;color:#8a8f9c;cursor:pointer;position:relative}
.au-tabs a[aria-selected=true],.au-tabs button[aria-selected=true]{color:#111318}
.au-tabs a[aria-selected=true]::after,.au-tabs button[aria-selected=true]::after{content:"";position:absolute;left:50%;bottom:0;width:24px;height:2px;background:#111318;transform:translateX(-50%)}
.au-f{position:relative;margin-bottom:20px}
.au-f label{display:block;font-size:.85rem;color:#5d6375;margin:0 0 6px}
.au-f input,.au-f select{width:100%;font:inherit;font-size:1rem;color:#111318;background:#f3f4f6;border:1px solid transparent;border-radius:10px;padding:17px 16px;outline:none;transition:.15s}
.au-f input:focus{background:#fff;border-color:#d9b45a;box-shadow:0 0 0 3px rgba(217,180,90,.2)}
.au-f .eye{position:absolute;right:12px;bottom:12px;border:0;background:none;cursor:pointer;color:#111318;padding:6px;display:grid;place-items:center}
.au-f .eye svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.au-link{color:#111318;text-decoration:none;border-bottom:1px dashed #8a8f9c;padding-bottom:2px}
.au-link:hover{border-bottom-style:solid}
.au-btn{display:block;width:100%;margin-top:34px;border:0;border-radius:999px;padding:18px;font:inherit;font-size:1.12rem;font-weight:600;cursor:pointer;color:#1a1406;
  background:linear-gradient(135deg,#f3dc94,#d9b45a 55%,#b88a2e);box-shadow:0 10px 30px rgba(217,180,90,.3);transition:filter .15s,transform .1s}
.au-btn:hover{filter:brightness(1.05)}.au-btn:active{transform:translateY(1px)}
.au-alt{margin-top:46px;color:#5d6375}
.au-msg{margin:0 0 18px;padding:12px 14px;border-radius:10px;font-size:.92rem}
.au-msg.err{background:#fde7e8;color:#c0262c}.au-msg.ok{background:#e3f6ed;color:#13804f}
.au-sub{margin:-34px 0 30px;color:#5d6375}
.au-chk{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:#5d6375;margin-top:6px}.au-chk input{width:18px;height:18px;accent-color:#b88a2e;margin-top:2px}
.au-help{position:fixed;right:28px;bottom:24px;width:58px;height:58px;border-radius:16px;display:grid;place-items:center;color:#1a1406;
  background:linear-gradient(135deg,#f3dc94,#d9b45a 55%,#b88a2e);box-shadow:0 10px 26px rgba(217,180,90,.4)}
.au-help svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.au-grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
@media (max-width:980px){
  .au{grid-template-columns:1fr;padding:0}
  .au-side{border-radius:0 0 22px 22px;padding:22px 20px 26px;min-height:0}
  .au-hero{margin-top:18px;text-align:left}.au-hero h1{font-size:1.5rem}.au-hero p{margin-top:8px;font-size:.95rem}
  .au-phone{display:none}
  .au-main{padding:28px 20px 90px;align-items:flex-start}
  .au-top{position:static;margin-bottom:18px}
  .au-main{flex-direction:column}
  .au-form h2{margin-bottom:28px}.au-sub{margin:-16px 0 22px}
  .au-grid2{grid-template-columns:1fr}
}