:root {
  --bg: #efe8da;
  --bg-strong: #f8f3e8;
  --ink: #14211d;
  --muted: #5a655f;
  --line: rgba(20, 33, 29, 0.12);
  --accent: #bc5d2a;
  --accent-deep: #733815;
  --teal: #2d6b62;
  --gold: #d8b05d;
  --glass: rgba(255, 249, 241, 0.84);
  --shadow: 0 18px 48px rgba(35, 28, 16, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-sm: 12px;
  --font: "Aptos", "PingFang SC", "Microsoft YaHei UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(188, 93, 42, 0.18), transparent 24%),
    radial-gradient(circle at bottom left, rgba(45, 107, 98, 0.16), transparent 24%),
    var(--bg);
}

.landing-body,
.workspace-body {
  min-height: 100vh;
}

.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.bg-orb {
  position: fixed;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  filter: blur(16px);
  pointer-events: none;
  opacity: 0.6;
}

.bg-orb-a {
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(188, 93, 42, 0.34), transparent 66%);
}

.bg-orb-b {
  left: -100px;
  bottom: -100px;
  background: radial-gradient(circle, rgba(45, 107, 98, 0.28), transparent 66%);
}

.landing-header,
.hero,
.section,
.workspace-main {
  position: relative;
  z-index: 1;
}

.landing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px 40px 16px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #fff7ed;
  background: linear-gradient(135deg, var(--accent), var(--gold));
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent-deep);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

.landing-nav,
.sidebar-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.landing-nav a,
.sidebar-nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.8fr);
  gap: 24px;
  padding: 12px 40px 48px;
}

.hero-copy,
.hero-side,
.card,
.form-panel,
.sidebar,
.login-card {
  border-radius: var(--radius-xl);
  padding: 24px;
}

.hero-copy h2 {
  font-size: clamp(2.4rem, 4.8vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.lead {
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 24px 0;
}

.button {
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0 18px;
  font: inherit;
  cursor: pointer;
}

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.button.secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}

.stat-grid,
.cards,
.credential-grid {
  display: grid;
  gap: 16px;
}

.stat-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-grid article {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: rgba(255, 248, 238, 0.82);
  border: 1px solid var(--line);
}

.stat-grid strong {
  display: block;
  font-size: 1.4rem;
}

.section {
  padding: 8px 40px 44px;
}

.section-title {
  margin-bottom: 18px;
}

.cards.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cards.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards.metrics {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cards.stack {
  grid-template-columns: 1fr;
}

.card ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.index-tag {
  color: var(--gold);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
}

.form-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.full {
  grid-column: 1 / -1;
}

label,
input,
select,
textarea {
  font: inherit;
}

label {
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  margin-top: 8px;
  padding: 12px 14px;
  border: 1px solid rgba(20, 33, 29, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.82);
}

.feedback {
  color: var(--teal);
  font-weight: 700;
  margin: 0;
}

.workspace-shell {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  margin: 18px;
  padding: 22px;
  align-self: start;
  position: sticky;
  top: 18px;
}

.sidebar-nav {
  flex-direction: column;
  margin: 28px 0;
}

.sidebar-foot {
  display: grid;
  gap: 10px;
}

.full-width {
  width: 100%;
}

.workspace-main {
  padding: 24px 24px 40px 0;
}

.workspace-section + .workspace-section {
  margin-top: 26px;
}

.section-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 16px;
}

.metric-card strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 4px;
}

.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.94rem;
}

.stack-card header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 6px 10px;
  min-width: 72px;
  background: rgba(188, 93, 42, 0.13);
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 700;
}

.pill.neutral {
  background: rgba(45, 107, 98, 0.13);
  color: var(--teal);
}

.top-gap {
  margin-top: 16px;
}

.login-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(20, 33, 29, 0.18);
  z-index: 20;
}

.login-overlay.hidden {
  display: none;
}

.login-card {
  width: min(520px, calc(100vw - 24px));
}

.login-form,
.credential-grid {
  margin-top: 18px;
}

.login-tip {
  color: var(--muted);
}

.credential-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.credential-grid article {
  padding: 12px;
  border-radius: var(--radius-lg);
  background: rgba(255, 248, 238, 0.74);
  border: 1px solid var(--line);
}

.credential-grid strong,
.credential-grid span {
  display: block;
}

@media (max-width: 1100px) {
  .hero,
  .workspace-shell,
  .cards.two,
  .cards.three,
  .cards.metrics {
    grid-template-columns: 1fr;
  }

  .workspace-main {
    padding: 18px;
  }

  .sidebar {
    position: static;
    margin: 18px;
  }
}

@media (max-width: 720px) {
  .landing-header,
  .hero,
  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .stat-grid,
  .form-panel {
    grid-template-columns: 1fr;
  }
}