.pc-signin { max-width: 460px; margin: 0 auto; padding: clamp(40px, 12vh, 120px) 24px 40px; }
.pc-signin__brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 650; color: var(--pc-color-text-primary); margin-bottom: 48px; }
.pc-signin__brand svg { color: var(--pc-color-brand-fill); }
.pc-signin__panel h1 { font-size: clamp(28px, 5vw, 36px); line-height: 1.2; letter-spacing: -.035em; margin: 0 0 20px; font-weight: 600; }
.pc-signin__intro { color: var(--pc-color-text-secondary); line-height: 1.65; margin: 0 0 32px; font-size: 16px; }
.pc-signin__continue { width: 100%; min-height: 48px; box-sizing: border-box; font-size: 15px; }
.pc-signin__continue:focus-visible { outline: 3px solid var(--pc-color-focus-ring); outline-offset: 4px; }
.pc-signin__hint, .pc-signin__return, .pc-signin__help { color: var(--pc-color-text-secondary); font-size: 13px; line-height: 1.6; }
.pc-signin__hint { margin: 16px 0 0; }
.pc-signin__return { margin: 12px 0 0; }
.pc-signin__help { margin-top: 36px; border-top: 1px solid var(--pc-color-border-subtle); padding-top: 20px; }
.pc-signin__form { margin: 0 0 8px; }
.pc-signin__form .pc-input { min-height: 44px; font-size: 15px; }
.pc-signin__form .pc-signin__continue { margin-top: 8px; }
.pc-signin__error, .pc-signin__notice { margin: 0 0 20px; padding: 12px 14px; border-radius: var(--pc-radius-sm); font-size: 14px; line-height: 1.5; border: 1px solid var(--pc-color-border-default); }
.pc-signin__error { color: var(--pc-color-status-failed-fg); border-color: var(--pc-color-status-failed-fg); }
.pc-signin__notice { color: var(--pc-color-text-secondary); background: var(--pc-color-surface-sunken); }