:root{--ink:#18302e;--forest:#174943;--teal:#327970;--gold:#b89452;--paper:#f4f1ea;--line:#ddd8cf;--muted:#687371;--danger:#9f4338}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(135deg,#0f302d 0 45%,#f4f1ea 45%);color:var(--ink);font-family:Inter,"Yu Gothic",Meiryo,system-ui,sans-serif}.auth-shell{width:min(1080px,calc(100% - 32px));min-height:calc(100vh - 72px);margin:auto;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:clamp(40px,7vw,100px)}.auth-brand{color:#fff}.brand-mark{width:54px;height:54px;display:grid;place-items:center;margin-bottom:34px;border:1px solid rgba(255,255,255,.5);font:22px Georgia,serif}.eyebrow{margin:0 0 12px;color:var(--gold);font-size:11px;font-weight:800;letter-spacing:.15em}.auth-brand h1{margin:0;font:clamp(48px,7vw,82px)/.92 Georgia,serif;letter-spacing:-.04em}.auth-brand>p:not(.eyebrow){max-width:460px;margin:26px 0 0;color:rgba(255,255,255,.76);line-height:1.8}.security-note{display:flex;gap:12px;align-items:center;margin-top:38px}.security-note>span{color:#70b29e}.security-note strong,.security-note small{display:block}.security-note small{margin-top:4px;color:rgba(255,255,255,.55)}.auth-card{min-height:610px;padding:clamp(28px,5vw,58px);border-top:5px solid var(--gold);background:#fff;box-shadow:0 28px 70px rgba(9,31,29,.24)}.auth-heading h2{margin:0 0 8px;font:36px Georgia,serif}.auth-heading>p:last-child{margin:0;color:var(--muted);line-height:1.6}.auth-tabs{display:grid;grid-template-columns:repeat(3,1fr);margin:30px 0 26px;border-bottom:1px solid var(--line)}.auth-tabs button{padding:12px 5px;border:0;border-bottom:3px solid transparent;background:none;color:var(--muted);font:inherit;font-size:12px;font-weight:800;cursor:pointer}.auth-tabs button.active{border-bottom-color:var(--forest);color:var(--forest)}form{display:grid;gap:18px}label{display:grid;gap:7px;color:var(--muted);font-size:12px;font-weight:800}label small{font-weight:500}input{width:100%;min-height:48px;padding:0 14px;border:1px solid var(--line);border-radius:3px;background:#fff;color:var(--ink);font:15px inherit}input:focus{outline:3px solid rgba(50,121,112,.15);border-color:var(--teal)}form>button,.setup-alert a{min-height:48px;display:grid;place-items:center;border:0;border-radius:3px;background:var(--forest);color:#fff;font:inherit;font-weight:800;text-decoration:none;cursor:pointer}button:disabled{opacity:.55;cursor:wait}.form-message{min-height:20px;margin:0;color:var(--danger);font-size:12px;line-height:1.55}.form-intro,.setup-alert{padding:14px 16px;border-left:3px solid var(--gold);background:#faf7f0;color:var(--muted);font-size:12px;line-height:1.6}.form-intro strong,.form-intro span{display:block}.form-intro strong{color:var(--ink)}.setup-alert{margin-bottom:24px}.setup-alert strong{color:var(--forest)}.setup-alert p{margin:5px 0 10px}.setup-alert a{display:inline-grid;min-height:38px;padding:0 14px}.back-link{display:inline-block;margin-top:24px;color:var(--forest);font-size:13px;font-weight:800}.hidden{display:none!important}footer{padding:24px;text-align:center;color:rgba(255,255,255,.62);font-size:11px;letter-spacing:.1em}@media(max-width:760px){body{background:#f4f1ea}.auth-shell{min-height:auto;margin:0 auto;padding:28px 0;grid-template-columns:1fr;gap:26px}.auth-brand{padding:20px;color:var(--forest)}.auth-brand h1{font-size:48px}.auth-brand>p:not(.eyebrow),.security-note small{color:var(--muted)}.security-note{display:none}.brand-mark{margin-bottom:20px;border-color:var(--forest)}.auth-card{min-height:0;padding:28px 20px}.auth-tabs{overflow-x:auto}.auth-tabs button{white-space:nowrap}footer{color:var(--muted)}}
@media(max-width:760px){.auth-brand h1{font-size:clamp(34px,10vw,44px);line-height:1}}
:root{--font-sans:"Helvetica Neue",Arial,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;--font-display:Didot,"Bodoni 72","Times New Roman","Yu Mincho","Hiragino Mincho ProN",serif}
body{font-family:var(--font-sans)}
.auth-brand h1,.auth-heading h2{font-family:var(--font-display)}