.login-page, .install-page { min-height: 100vh; background: radial-gradient(circle at top left, #dcefeb, transparent 42%), linear-gradient(135deg, #fffaf6, #edf7f5); }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(480px, 100%); background: rgba(255,255,255,.94); border: 1px solid var(--border); border-radius: 28px; padding: 30px; box-shadow: var(--shadow-md); }
.login-mark { width: 72px; height: 72px; border-radius: 22px; display: grid; place-items: center; background: linear-gradient(135deg, var(--primary), var(--mint)); color: #fff; font-weight: 900; font-size: 1.3rem; margin-bottom: 18px; }
.login-card h1 { margin: 0; font-size: 2rem; }
.login-card p { color: var(--muted); }
.login-card form { margin-top: 22px; }
.login-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.portal-login-layout { min-height: 100vh; display: grid; grid-template-columns: 1.1fr .9fr; }
.portal-login-art { min-height: 100vh; position: relative; overflow: hidden; background: linear-gradient(145deg, rgba(0,109,119,.86), rgba(0,79,87,.94)), url('../img/placeholder-integration.svg') center/cover; color: #fff; display: flex; align-items: end; padding: clamp(32px, 6vw, 80px); }
.portal-login-art::after { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25); top: -170px; right: -120px; }
.portal-login-copy { position: relative; z-index: 1; max-width: 650px; }
.portal-login-copy h1 { font-size: clamp(2.4rem, 6vw, 5.6rem); line-height: .95; margin: 0 0 16px; }
.portal-login-copy p { font-size: 1.1rem; max-width: 560px; color: rgba(255,255,255,.82); }
.portal-login-panel { display: grid; place-items: center; padding: 28px; background: var(--paper); }