.auth-grid { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
.auth-form-col { position: relative; display: flex; flex-direction: column; justify-content: center; gap: 8px;
  padding: 96px clamp(16px, 6vw, 88px) 48px; max-width: 560px; width: 100%; margin: 0 auto; }
.auth-form-col .nm-logo { position: absolute; top: 28px; left: clamp(16px, 6vw, 88px); }
.auth-title { font: 400 clamp(38px, 5vw, 54px)/1.05 var(--serif); letter-spacing: -.02em; margin: 0; }
.auth-sub { color: var(--muted); margin: 0 0 20px; }
#form { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; font: 600 14px/1.2 var(--sans); }
.field[hidden] { display: none; }
.field input { width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); font: 400 16px var(--sans); }
.field input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 25%, transparent); }
.pw { position: relative; display: block; }
.pw input { padding-right: 84px; }
.pw-toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); border: 0; background: none;
  color: var(--brand); font: 600 13px var(--sans); padding: 8px; cursor: pointer; border-radius: 6px; }
.pw-toggle:focus-visible { outline: 2px solid var(--brand); }
.hint { color: var(--muted); font-size: 13px; margin: -8px 0 0; }
.hint[hidden], .form-error[hidden] { display: none; }
.form-error { margin: 0; padding: 10px 12px; border-radius: var(--radius-sm); font-size: 14px;
  background: color-mix(in srgb, #C0362C 12%, var(--surface)); color: #9E2A21; }
@media (prefers-color-scheme: dark) { .form-error { color: #F2A39C; } }
.auth-submit { width: 100%; min-height: 50px; margin-top: 4px; }
.switch { color: var(--muted); font-size: 14px; text-align: center; margin: 4px 0 0; }
.switch a { color: var(--brand); font-weight: 600; }

.auth-art { position: relative; overflow: hidden; background: #0F5C4A; color: #fff;
  display: flex; flex-direction: column; justify-content: safe center; align-items: flex-start; gap: 48px;
  padding: 64px clamp(40px, 6vw, 96px); }
@media (prefers-color-scheme: dark) { .auth-art { background: #0B3A30; } }
.auth-art blockquote { margin: 0; font: 400 clamp(34px, 3.6vw, 52px)/1.06 var(--serif); letter-spacing: -.01em; max-width: 13ch; }
.auth-art blockquote em { color: var(--lime); }
.sheet { position: relative; width: min(320px, 70%); aspect-ratio: 210/297; background: #FBFAF6; border-radius: 4px;
  box-shadow: 0 30px 60px rgba(0,0,0,.28); transform: rotate(-3deg); padding: 16% 10% 10% 15%;
  align-self: center; }
.sheet::before { content: ""; position: absolute; inset: 9% 7% 7% 12%; border: 1px dashed rgba(15,92,74,.35); }
.sheet i { position: relative; display: block; height: 6px; border-radius: 3px; background: #D9D5CA; margin-bottom: 9px; }
.sheet i.t { width: 56%; margin: 0 auto 20px; background: #0F5C4A; height: 8px; }
.sheet i.s { width: 72%; }
.sheet i.q { margin-left: 30%; background: #E6E2D7; }
.sheet .m { position: absolute; font: 500 10px var(--mono); color: #0F5C4A; }
.sheet .m.t2 { top: 2.5%; left: 50%; transform: translateX(-50%); }
.sheet .m.l { left: 1.5%; top: 50%; transform: rotate(-90deg); }
.sheet .m.r { right: -1%; top: 50%; transform: rotate(90deg); }
.seal { position: absolute; right: -18px; bottom: 16%; background: var(--lime); color: #14201B; border-radius: 999px;
  padding: 10px 16px; font: 700 14px var(--sans); transform: rotate(8deg); box-shadow: 0 8px 20px rgba(0,0,0,.2); }
@media (max-width: 860px) {
  .auth-grid { grid-template-columns: 1fr; }
  .auth-art { display: none; }
  .auth-form-col { justify-content: flex-start; padding-top: 28px; }
  .auth-form-col .nm-logo { position: static; margin-bottom: 40px; }
}