:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-soft: #f0f4ed;
  --ink: #18201d;
  --muted: #657067;
  --line: #dfe6dc;
  --accent: #1e6f5c;
  --accent-strong: #164c40;
  --accent-soft: #dff0e9;
  --warning: #9a5b00;
  --danger: #aa3434;
  --shadow: 0 18px 45px rgba(24, 32, 29, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  margin-top: 3px;
}

.nav-list {
  display: grid;
  gap: 6px;
}

.nav-list a {
  padding: 11px 12px;
  border-radius: 8px;
  color: var(--muted);
}

.nav-list a.active,
.nav-list a:hover {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.sidebar-panel,
.panel,
.metric-grid article,
.steps article,
.model-card,
.token-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.sidebar-panel {
  margin-top: auto;
  padding: 16px;
}

.sidebar-panel strong,
.sidebar-panel small,
.sidebar-panel span {
  display: block;
}

.sidebar-panel strong {
  font-size: 24px;
  margin: 8px 0;
}

.content {
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 70px;
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  padding: 14px 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 248, 245, 0.9);
  backdrop-filter: blur(18px);
}

.topbar strong,
.topbar span {
  display: block;
}

.topbar span {
  color: var(--muted);
  font-size: 14px;
  margin-top: 3px;
}

.auth-box {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  white-space: nowrap;
}

.route {
  display: none;
  padding: 40px 44px 72px;
  max-width: 1180px;
}

.route.active {
  display: block;
}

.hero {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 800;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.96;
}

h2 {
  font-size: 32px;
  margin-bottom: 10px;
}

h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.hero p,
.section-heading p,
.panel p,
.model-card p,
.doc-article p,
.doc-article li,
.check-list li {
  color: var(--muted);
  line-height: 1.72;
}

.hero p {
  max-width: 760px;
  font-size: 18px;
}

.hero-actions,
.toolbar,
.token-actions,
.price-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.primary-button,
.secondary-button,
.ghost-button {
  border: 0;
  border-radius: 8px;
  padding: 11px 16px;
  cursor: pointer;
  font-weight: 700;
}

.primary-button {
  background: var(--accent);
  color: #fff;
}

.primary-button:hover {
  background: var(--accent-strong);
}

.secondary-button {
  background: var(--ink);
  color: #fff;
}

.ghost-button {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
}

.icon-button {
  width: 42px;
  height: 42px;
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 10px;
}

.icon-button span {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
}

.metric-grid,
.steps,
.model-grid,
.token-list {
  display: grid;
  gap: 16px;
}

.metric-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 28px 0 44px;
}

.metric-grid article,
.steps article,
.model-card,
.token-card,
.panel {
  padding: 20px;
}

.metric-grid span,
.balance-card span,
.model-meta,
.token-meta {
  color: var(--muted);
  font-size: 14px;
}

.metric-grid strong {
  display: block;
  font-size: 24px;
  margin: 8px 0;
}

.section-block {
  border-top: 1px solid var(--line);
  padding-top: 34px;
}

.section-heading {
  margin-bottom: 22px;
}

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

.steps span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 800;
  margin-bottom: 18px;
}

.toolbar {
  align-items: end;
  margin-bottom: 18px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 8px;
  padding: 10px 12px;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.model-card {
  display: grid;
  gap: 12px;
}

.model-card-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.badge {
  align-self: flex-start;
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--surface-soft);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.badge.pending {
  color: var(--warning);
  background: #fff4dc;
}

.price-tags span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  font-size: 13px;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  gap: 18px;
}

.panel form,
form.panel,
.auth-form {
  display: grid;
  gap: 16px;
}

.form-message {
  min-height: 24px;
  margin: 0;
}

.form-message.success {
  color: var(--accent);
}

.form-message.error {
  color: var(--danger);
}

.balance-card {
  padding: 20px;
  background: var(--surface-soft);
  border-radius: 8px;
  margin-bottom: 16px;
}

.balance-card strong {
  display: block;
  font-size: 34px;
  margin-top: 8px;
}

.activity-list,
.check-list {
  padding-left: 18px;
  margin: 0;
}

.activity-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.token-list {
  margin-top: 18px;
}

.token-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
}

.token-card code,
.doc-article code {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 6px;
}

.token-actions button {
  min-width: 86px;
}

.doc-article {
  max-width: 820px;
}

.doc-article {
  border-left: 3px solid var(--accent);
  padding-left: 22px;
}

.doc-article li {
  margin-bottom: 10px;
}

@media (max-width: 920px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(300px, 86vw);
    transform: translateX(-104%);
    transition: transform 0.2s ease;
    z-index: 30;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .icon-button {
    display: block;
  }

  .topbar {
    padding: 12px 18px;
  }

  .route {
    padding: 28px 18px 56px;
  }

  .metric-grid,
  .steps,
  .model-grid,
  .two-column {
    grid-template-columns: 1fr;
  }

  .token-card {
    grid-template-columns: 1fr;
  }

  .auth-box {
    font-size: 13px;
  }
}