/* 策源品牌应用 V1。延续现有业务结构，统一品牌触点。 */
body { background: var(--bg); }
.brand-lockup { display: block; width: 180px; max-width: 100%; height: auto; }
.brand-linboo > i { animation: none; box-shadow: none; }
.linboo-guide { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 12px; line-height: 1.7; margin-bottom: 18px; }
.login-page { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; padding: 64px max(48px, calc((100vw - 1248px) / 2)); background: #fff; }
.login-copy { padding: 0; min-width: 0; }
.login-copy .brand-lockup { width: 206px; }
.login-eyebrow { margin-top: 54px; color: var(--muted); font: 11px/1.7 "Segoe UI", "Microsoft YaHei", sans-serif; letter-spacing: 2px; }
.login-copy h1 { font-size: clamp(40px, 4.3vw, 64px); line-height: 1.3; color: var(--ink); letter-spacing: -1.5px; margin-top: 20px; }
.login-copy h1 > span { color: var(--blue); }
.login-copy .login-lead { color: var(--ink); font-size: 21px; font-weight: 500; margin-top: 24px; }
.login-copy .login-description { max-width: 430px; font-size: 14px; font-weight: 400; color: var(--muted); line-height: 1.9; margin-top: 14px; }
.login-card { max-width: 100%; width: 408px; padding: 22px; margin-top: 28px; border-radius: 16px; background: var(--bg); box-shadow: none; }
.login-card .button { border-radius: 10px; }
.login-visual { min-height: auto; padding: 0; min-width: 0; }
.login-companion { width: 100%; max-width: 560px; background: #efeffa; border: 1px solid #e1e1f2; border-radius: 32px; padding: 24px; }
.login-companion-label { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 11px; letter-spacing: 1px; margin-bottom: 18px; }
.login-linboo-video { display: block; width: 100%; aspect-ratio: 1; object-fit: contain; background: #080820; border-radius: 40% 40% 22% 22%; }
.login-linboo-video { pointer-events: none; }
.login-companion-caption { display: flex; align-items: center; gap: 12px; margin-top: 20px; color: var(--ink); font-size: 12px; }
.login-companion-caption img { flex: 0 0 28px; }
.side-nav { background: var(--ink); color: #dce0f3; }
.side-nav .brand { margin: 6px 6px 28px; }
.side-nav .brand-lockup { width: 178px; }
.nav-section { color: #a7aec7; }
.nav-item { color: #dce0f3; font-weight: 600; }
.nav-item:hover { background: #7465e822; }
.nav-item.active { background: #7465e83d; color: #fff; }
.nav-item.active .nav-dot { background: var(--brand-cyan); opacity: 1; }
.button.primary { background: var(--blue); border-color: var(--blue); }
.button.primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.reader-brand { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 2px 4px 18px; }
.reader-brand .brand-lockup { width: 150px; }
.reader-brand > span { font-size: 12px; color: var(--muted); }
.reader-top h1 { overflow-wrap: anywhere; }
:is(button, a, input, select, textarea):focus-visible { outline: 3px solid var(--brand-violet); outline-offset: 3px; }
@media (max-width: 1100px) {
  .login-page { grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); padding: 48px 32px; gap: 32px; }
  .login-copy { padding: 0; }
  .login-copy h1 { font-size: 44px; }
  .login-copy .login-lead { font-size: 18px; }
  .login-companion { padding: 18px; }
  .login-companion-caption { font-size: 11px; }
}
@media (max-width: 760px) {
  .login-page { grid-template-columns: 1fr; gap: 0; min-height: 100svh; padding: 40px 24px; }
  .login-copy { padding: 0; }
  .login-copy .brand-lockup { width: 180px; }
  .login-eyebrow { margin-top: 44px; font-size: 10px; }
  .login-copy h1 { font-size: clamp(32px, 9vw, 46px); }
  .login-copy .login-lead { font-size: 18px; }
  .login-card { width: 100%; }
  .login-visual { display: none; }
  .side-nav .brand { margin-bottom: 20px; }
  .reader-brand { align-items: start; flex-direction: column; gap: 8px; }
  .reader { padding: 16px 14px 28px; }
  .reader-top { grid-template-columns: minmax(0, 1fr); }
  .reader-top h1 { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) { .login-page *, .brand-linboo > i { animation: none !important; } }