:root {
  --ink: #242229;
  --muted: #74717a;
  --paper: #f8f7f3;
  --card: #fff;
  --line: #e8e4db;
  --accent: #da4b38;
  --accent-dark: #b93d2e;
  --sand: #f2ebdc;
  --shadow: 0 12px 36px rgba(47, 37, 21, .08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html, body { min-width: 320px; min-height: 100%; }
body { margin: 0; background: var(--paper); }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; border: 0; }
button:disabled { opacity: .65; cursor: wait; }
#app { min-height: 100vh; }

/* 登录页继续使用上面的原有基础变量；工作台首屏只使用四颜色令牌。 */
:root {
  --wb-bg: #000000;
  --wb-selected: #212121;
  --wb-accent: #39D98A;
  --wb-error: #D92D20;
  --wb-text: #FFFFFF;
  --wb-on-accent: #000000;
  --wb-on-selected: #FFFFFF;
}
html[data-theme="light"] body:has(.layout) {
  --wb-bg: #FFFFFF;
  --wb-accent: #119447;
  --wb-text: #000000;
  --wb-on-accent: #FFFFFF;
}

.auth-shell {
  min-height: 100vh;
  padding: 6vw;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 15% 15%, #f8d5ba, transparent 35%), radial-gradient(circle at 85% 80%, #dbe7d8, transparent 35%), var(--paper);
}
.auth-card {
  width: min(590px, 100%);
  padding: clamp(32px, 7vw, 72px);
  border: 1px solid rgba(255, 255, 255, .65);
  border-radius: 30px;
  background: rgba(255, 255, 255, .8);
  box-shadow: var(--shadow);
}
.auth-card h1 { margin: 8px 0 16px; font-size: clamp(30px, 5vw, 52px); letter-spacing: -.05em; }
.auth-card p { color: var(--muted); line-height: 1.7; }

.topbar {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 4vw, 64px);
  background: var(--wb-bg);
  border-bottom: 0;
}
.topbar h1 { margin: 3px 0 0; font-size: var(--workbench-type-page-title); letter-spacing: -.04em; }
.user-menu { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: var(--workbench-type-body); }
.layout { display: grid; grid-template-columns: 270px minmax(0, 1fr) 280px; min-height: calc(100vh - 86px); }
.sidebar { padding: 24px 16px; border-right: 0; background: var(--wb-bg); }
.workspace { width: min(1040px, 100%); padding: clamp(24px, 5vw, 64px); margin: 0 auto; background: var(--wb-bg); }
.recent-work-rail { min-width: 0; border-left: 0; background: var(--wb-bg); }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.page-head h2 { margin: 4px 0 8px; letter-spacing: -.045em; font-size: clamp(26px, 4vw, 39px); }
.page-head p { color: var(--muted); line-height: 1.7; }
.eyebrow { margin: 0; color: var(--accent); font-size: var(--workbench-type-meta); font-weight: 800; letter-spacing: .14em; }
.primary, .secondary, .text, .button-link { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; border-radius: 10px; padding: 0 17px; font-weight: 750; text-decoration: none; }
.primary { color: var(--wb-on-accent); background: var(--wb-accent); }
.secondary { color: var(--wb-on-selected); background: var(--wb-selected); }
.text, .button-link { color: var(--wb-accent); background: transparent; }

@media (max-width: 1040px) {
  .layout { grid-template-columns: 220px minmax(0, 1fr); }
  .recent-work-rail { display: none; }
}
@media (max-width: 720px) {
  .layout { display: block; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
  .workspace { padding: 24px 16px 40px; }
  .page-head { display: block; }
}