:root{--ink:#0f1f3a;--ink2:#475569;--mut:#7b8aa0;--line:#e3e9f2;--fill:#f2f6fb;--blue:#2563eb;--cyan:#06b6d4;--mint:#10b981;--font:"Be Vietnam Pro",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
*{box-sizing:border-box}html{font-size:16px}
body.au{margin:0;min-height:100vh;font-family:var(--font);color:var(--ink);background:#f7faff;-webkit-font-smoothing:antialiased;line-height:1.55}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.au-wrap{display:grid;grid-template-columns:1fr;min-height:100vh}
/* showcase */
.au-show{position:relative;margin:12px 12px 0;border-radius:22px;overflow:hidden;background:#dbe7f5;box-shadow:0 20px 50px -20px rgba(15,31,58,.35);animation:rise .7s ease-out both}
.cmp{position:relative;aspect-ratio:3/2;width:100%;overflow:hidden;user-select:none;-webkit-user-select:none;touch-action:pan-y;cursor:ew-resize;--p:50%}
.cmp img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.cmp-b{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--p)) 0 0)}
.cmp-l,.cmp-r{position:absolute;top:16px;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:6px 12px;border-radius:999px;pointer-events:none;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.cmp-l{left:16px;background:rgba(15,23,42,.55);color:#fff}.cmp-r{right:16px;background:rgba(255,255,255,.85);color:var(--blue)}
.cmp-h{position:absolute;top:0;bottom:0;left:var(--p);width:3px;margin-left:-1.5px;background:#fff;box-shadow:0 0 0 1px rgba(15,31,58,.08),0 0 18px rgba(255,255,255,.7);outline:none}
.cmp-h i{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:#fff;color:var(--blue);display:grid;place-items:center;box-shadow:0 8px 24px rgba(15,31,58,.3)}
.cmp-h:focus-visible i{box-shadow:0 0 0 4px rgba(37,99,235,.35)}
.au-logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;color:var(--ink);text-decoration:none!important;line-height:1.1}
.au-logo .mk{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:19px;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 6px 16px -4px rgba(37,99,235,.55)}
.au-logo small{display:block;font-size:.72rem;font-weight:500;color:var(--mut)}
.au-logo.on-img{position:absolute;left:22px;top:20px;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.35);display:none}
.au-cap{position:absolute;left:0;right:0;bottom:0;padding:44px 22px 18px;background:linear-gradient(transparent,rgba(10,20,40,.62));color:#fff;pointer-events:none}
.au-cap p{margin:8px 0 0;font-size:.82rem;opacity:.9}
.au-chips{display:flex;flex-wrap:wrap;gap:8px}.au-chips span{font-size:.76rem;font-weight:600;padding:6px 11px;border-radius:999px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
/* form panel */
.au-main{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;padding:28px 20px 32px}
body.au{overflow-x:hidden}.au-show{z-index:1}
body.au:before,body.au:after{content:"";position:fixed;border-radius:50%;filter:blur(60px);opacity:.55;z-index:0;pointer-events:none}
body.au:before{width:420px;height:420px;background:#bfe0ff;top:-140px;right:-120px}body.au:after{width:360px;height:360px;background:#c9f5e4;bottom:-160px;left:-120px}
.au-box{position:relative;z-index:1;width:100%;max-width:440px;animation:rise .6s .1s ease-out both}
.au-box>.au-logo{margin-bottom:26px}
.au-h{font-size:clamp(1.3rem,1rem + 1vw,1.75rem);line-height:1.25;font-weight:800;letter-spacing:-.025em;margin:0 0 10px}.au-h .nw{white-space:nowrap}
.grad{background:linear-gradient(90deg,var(--blue),var(--cyan) 55%,var(--mint));-webkit-background-clip:text;background-clip:text;color:transparent}
.au-sub{color:var(--ink2);font-size:.97rem;margin:0 0 22px}
.au-tabs{display:flex;gap:26px;border-bottom:1px solid var(--line);margin-bottom:20px}
.au-tabs a{position:relative;padding:8px 0 12px;color:var(--mut);font-weight:600;text-decoration:none!important}
.au-tabs a.on{color:var(--ink)}.au-tabs a.on:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.au-tabs a:not(.on):hover{color:var(--ink2)}
.au-f{display:block;margin-bottom:14px}.au-f>span{display:block;font-size:.84rem;font-weight:600;color:var(--ink2);margin-bottom:6px}
.au-f input{width:100%;height:48px;border:1.5px solid transparent;background:var(--fill);border-radius:12px;padding:0 14px;font:inherit;font-size:16px;color:var(--ink);outline:none;transition:background .15s,border-color .15s,box-shadow .15s}
.au-f input::placeholder{color:#9aa8bb}
.au-f input:hover{background:#ebf1f9}.au-f input:focus{background:#fff;border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.au-pw{position:relative}.au-pw input{padding-right:46px}
.au-pw .eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:0;background:none;color:var(--mut);border-radius:9px;cursor:pointer;display:grid;place-items:center}.au-pw .eye:hover,.au-pw .eye.on{color:var(--blue);background:rgba(37,99,235,.08)}
.au-check{display:flex;align-items:center;gap:10px;font-size:.9rem;color:var(--ink2);cursor:pointer;margin:2px 0 20px}
.au-check input{width:18px;height:18px;accent-color:var(--blue);margin:0;flex:none}
.au-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.au-actions>a:not(.au-btn){font-size:.9rem;font-weight:600}
.au-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 26px;border:0;border-radius:12px;font:inherit;font-weight:700;font-size:1rem;color:#fff!important;text-decoration:none!important;cursor:pointer;
 background:linear-gradient(135deg,#2563eb,#0ea5e9);box-shadow:0 10px 24px -8px rgba(37,99,235,.6);transition:transform .15s,box-shadow .15s,filter .15s}
.au-btn span{transition:transform .2s}.au-btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px -8px rgba(37,99,235,.65);filter:saturate(1.1)}.au-btn:hover span{transform:translateX(3px)}.au-btn:active{transform:none}
.au-note{margin:22px 0 0;color:var(--ink2);font-size:.92rem}
.au-msg{border-radius:12px;padding:11px 14px;font-size:.9rem;margin-bottom:16px}.au-msg.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.au-msg.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.au-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.au-grid .full{grid-column:1/-1}
.au-steps{list-style:none;counter-reset:s;padding:0;margin:0 0 24px;display:grid;gap:12px}
.au-steps li{counter-increment:s;position:relative;padding:14px 16px 14px 60px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 14px -8px rgba(15,31,58,.15)}
.au-steps li:before{content:counter(s);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--blue),var(--cyan))}
.au-steps b{display:block}.au-steps span{font-size:.88rem;color:var(--ink2)}
.au-foot{margin:30px 0 0;font-size:.78rem;color:var(--mut)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media(max-width:899px){.au-show{order:2;margin:0 16px 20px}.au-main{order:1}.au-show .cmp{aspect-ratio:4/3}}
@media(max-width:520px){.au-grid{grid-template-columns:1fr}.au-chips span:nth-child(n+3){display:none}.au-h br{display:none}.au-h .nw{white-space:normal}}
/* desktop: balanced split, one screen */
@media(min-width:900px){
 body.au{height:100vh;overflow:hidden}
 .au-wrap{grid-template-columns:1.12fr 1fr;height:100vh;min-height:0}
 .au-show{margin:16px 0 16px 16px;height:calc(100vh - 32px)}
 .au-show .cmp{aspect-ratio:auto;height:100%}
 .au-logo.on-img{display:inline-flex}
 .cmp-l,.cmp-r{top:auto;bottom:118px}
 .au-cap{padding:70px 30px 26px}
 .au-main{padding:clamp(16px,3vh,40px) clamp(24px,4vw,64px);overflow-y:auto}
 .au-box>.au-logo{display:none}
 .au-sub{margin-bottom:clamp(14px,2.4vh,24px)}
}
@media(min-width:900px) and (max-height:800px){.au-h{font-size:1.45rem}.au-f{margin-bottom:10px}.au-f input{height:44px}.au-btn{height:46px}.au-tabs{margin-bottom:14px}.au-check{margin-bottom:14px}.au-foot{margin-top:18px}.au-steps li{padding-top:10px;padding-bottom:10px}}
@media(prefers-reduced-motion:reduce){.au-show,.au-box{animation:none}}