:root{--ink:#0f0d0c;--text:#f5f0e9;--muted:#a59a8f;--line:rgba(255,255,255,.12);--accent:#ff7a12;--accent-deep:#e8680a;--danger:#ff8f7f}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--ink);color:var(--text);font-family:"DM Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
body{min-height:100dvh;overflow-x:hidden}
.scene{position:fixed;inset:0;z-index:0;overflow:hidden}
.photo{position:absolute;inset:-20px;background:url(/bj/bg.webp) center 88%/cover no-repeat;filter:saturate(.85) brightness(.9);transform:scale(1.04);animation:drift 40s ease-in-out infinite alternate}
.shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,10,9,.55) 0%,rgba(12,10,9,.72) 45%,rgba(12,10,9,.94) 70%,#0f0d0c 100%),linear-gradient(0deg,rgba(12,10,9,.85) 0%,rgba(12,10,9,0) 45%)}
.mark{position:absolute;left:50%;bottom:-2.5vw;transform:translateX(-50%);width:120vw;aspect-ratio:5.2/1;background:#fff;opacity:.05;-webkit-mask:url(/bj/logo.png) center/contain no-repeat;mask:url(/bj/logo.png) center/contain no-repeat}
.grain{position:absolute;inset:0;background:radial-gradient(1000px 520px at 78% 18%,rgba(255,122,18,.10),transparent 60%)}
@keyframes drift{from{transform:scale(1.04) translate3d(0,0,0)}to{transform:scale(1.09) translate3d(-1.5%,-1%,0)}}
@media (prefers-reduced-motion:reduce){.photo{animation:none}}
.layout{position:relative;z-index:1;min-height:100dvh;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(380px,.85fr)}
.story{display:flex;flex-direction:column;justify-content:space-between;padding:56px clamp(40px,6vw,96px) 64px}
.logo{height:30px;width:auto;max-width:none;display:block;align-self:flex-start;object-fit:contain}
.eyebrow{display:inline-block;font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:#f2a766;padding-left:34px;position:relative}
.eyebrow::before{content:"";position:absolute;left:0;top:50%;width:22px;height:2px;background:var(--accent)}
.headline{margin:18px 0 14px;font-size:clamp(30px,3.4vw,46px);line-height:1.25;font-weight:600;letter-spacing:.02em;text-shadow:0 2px 30px rgba(0,0,0,.5)}
.sub{margin:0;color:#d6cbbf;font-size:16px;letter-spacing:.04em}
.facts{list-style:none;margin:0;padding:0;display:flex;gap:28px}
.facts li{display:flex;flex-direction:column;gap:3px;padding-left:14px;border-left:1px solid rgba(255,255,255,.22)}
.facts strong{font-size:14px;font-weight:600}
.facts span{font-size:11.5px;color:var(--muted);letter-spacing:.06em}
.panel{display:flex;flex-direction:column;justify-content:center;padding:48px clamp(24px,4vw,64px) calc(32px + env(safe-area-inset-bottom))}
.brand-m{display:none}
.card{width:100%;max-width:400px;margin:0 auto;background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.025));border:1px solid var(--line);border-radius:20px;padding:34px 30px 28px;backdrop-filter:blur(18px) saturate(1.1);-webkit-backdrop-filter:blur(18px) saturate(1.1);box-shadow:0 40px 90px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.08)}
h1{margin:0;font-size:27px;font-weight:600;letter-spacing:.03em}
.lead{margin:8px 0 24px;font-size:14px;color:var(--muted);line-height:1.65}
.tabs{display:flex;gap:4px;padding:4px;border-radius:12px;background:rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.06);margin-bottom:22px}
.tab{flex:1;border:0;background:none;color:var(--muted);font:inherit;font-size:14px;padding:10px 8px;border-radius:9px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:background .2s,color .2s}
.tab em{font-style:normal;font-size:10.5px;padding:1px 6px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.tab.is-on{background:rgba(255,255,255,.12);color:var(--text)}
.field{display:block;margin-bottom:15px}
.field>span:first-child{display:block;font-size:12.5px;color:var(--muted);margin-bottom:7px;letter-spacing:.05em}
.field input{width:100%;height:50px;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.32);color:var(--text);font:inherit;font-size:16px;padding:0 14px;outline:none;transition:border-color .15s,background .15s,box-shadow .15s}
.field input::placeholder{color:#756b62}
.field input:focus{border-color:var(--accent);background:rgba(0,0,0,.42);box-shadow:0 0 0 3px rgba(255,122,18,.15)}
.field input:disabled{opacity:.5}
.pw{position:relative;display:block}
.pw input{padding-right:64px}
.eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--muted);font:inherit;font-size:12.5px;padding:8px;cursor:pointer;border-radius:8px}
.eye:hover{color:var(--text)}
.code-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end}
.primary{width:100%;height:52px;margin-top:6px;border:0;border-radius:12px;background:linear-gradient(180deg,#ff8a2a,var(--accent));color:#1c0d02;font:inherit;font-size:16px;font-weight:600;letter-spacing:.1em;cursor:pointer;box-shadow:0 10px 30px rgba(255,122,18,.25);transition:filter .15s,transform .1s}
.primary:hover{filter:brightness(.96)}
.primary:active{transform:translateY(1px)}
.primary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.ghost{height:50px;margin-bottom:15px;padding:0 14px;border-radius:12px;border:1px solid var(--line);background:none;color:var(--muted);font:inherit;font-size:14px}
.error{margin:2px 0 10px;font-size:13.5px;color:var(--danger)}
.note{margin:0 0 6px;font-size:13px;color:var(--muted);line-height:1.6}
.foot{margin-top:24px;text-align:center;font-size:12px;color:#7d7268}
.foot a{color:inherit;text-decoration:none;border-bottom:1px solid #3d3631}
@media (max-width:900px){
 .layout{grid-template-columns:1fr}
 .story{display:none}
 .shade{background:linear-gradient(180deg,rgba(12,10,9,.35) 0%,rgba(12,10,9,.7) 32%,rgba(12,10,9,.94) 58%,#0f0d0c 100%)}
 .photo{inset:-16vh 0 auto 0;height:84vh;background-image:url(/bj/bg-m.webp);background-position:center bottom;animation:none;transform:none}
 .panel{justify-content:flex-start;padding:calc(28px + env(safe-area-inset-top)) 18px calc(28px + env(safe-area-inset-bottom))}
 .brand-m{display:flex;align-items:center;justify-content:space-between;max-width:400px;width:100%;margin:0 auto 26vh}
 .brand-m span{font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:#d6cbbf}
 .card{padding:28px 22px 24px;border-radius:18px}
 h1{font-size:25px}
 .tab em{display:none}
}