:root {
  --bg: #f5efe2;
  --paper: rgba(255, 252, 246, 0.92);
  --ink: #1f2c28;
  --muted: #5f6b66;
  --line: rgba(31, 44, 40, 0.12);
  --primary: #0f766e;
  --primary-strong: #0b5d57;
  --accent: #bc6c25;
  --glow: rgba(188, 108, 37, 0.18);
  --shadow: 0 24px 60px rgba(63, 52, 35, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "Aptos", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(188, 108, 37, 0.12), transparent 28%),
    linear-gradient(180deg, #f9f3e8 0%, #f1e8d8 100%);
}

body {
  position: relative;
}

.ambient {
  position: fixed;
  width: 26rem;
  height: 26rem;
  border-radius: 999px;
  filter: blur(70px);
  opacity: 0.5;
  pointer-events: none;
}

.ambient-a {
  top: -8rem;
  left: -6rem;
  background: rgba(15, 118, 110, 0.22);
}

.ambient-b {
  top: 16rem;
  right: -10rem;
  background: rgba(188, 108, 37, 0.22);
}

.shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.card {
  background: var(--paper);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero,
.quickstart,
.status-strip,
.results {
  margin-bottom: 1.2rem;
}

.hero {
  padding: 2rem;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

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

h1 {
  max-width: 12ch;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.lede {
  margin-top: 1rem;
  max-width: 70ch;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.6;
}

.lede.cn {
  margin-top: 0.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}

.hero-stat,
.status-strip,
.panel,
.results {
  overflow: hidden;
}

.hero-stat {
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(248, 245, 236, 0.9));
}

.stat-label,
.status-label,
.hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-stat strong,
.status-value {
  display: block;
  margin-top: 0.35rem;
  line-height: 1.4;
}

.hero-actions,
.actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.4rem;
  flex-wrap: wrap;
}

.button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.2rem;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: white;
  box-shadow: 0 14px 34px rgba(15, 118, 110, 0.28);
}

.button.ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(31, 44, 40, 0.12);
}

.button.is-small {
  padding: 0.65rem 0.95rem;
  font-size: 0.88rem;
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem 1.25rem;
}

.quickstart {
  padding: 1.35rem;
}

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

.step {
  padding: 1rem;
  border-radius: 18px;
  border: 1px solid rgba(31, 44, 40, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(250, 244, 236, 0.8));
}

.step-index {
  display: inline-flex;
  margin-bottom: 0.6rem;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.step h3 {
  margin-bottom: 0.4rem;
}

.step p {
  color: var(--muted);
  line-height: 1.55;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
  gap: 1.2rem;
  margin-bottom: 1.2rem;
}

.panel {
  padding: 1.4rem;
}

.panel-head {
  margin-bottom: 1rem;
}

.panel-head p {
  color: var(--muted);
  margin-top: 0.35rem;
  line-height: 1.5;
}

.tabs {
  display: inline-flex;
  background: rgba(31, 44, 40, 0.06);
  padding: 0.3rem;
  border-radius: 999px;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font-weight: 700;
  cursor: pointer;
}

.tab.is-active {
  background: white;
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(31, 44, 40, 0.08);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.stack {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field span {
  font-weight: 700;
}

input[type="text"],
input[type="number"],
input[type="file"],
textarea {
  width: 100%;
  border: 1px solid rgba(31, 44, 40, 0.14);
  border-radius: 16px;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 16rem;
  resize: vertical;
  font-family: "Cascadia Code", "Consolas", monospace;
  line-height: 1.5;
}

.explainer {
  background:
    linear-gradient(180deg, rgba(252, 248, 241, 0.98), rgba(247, 240, 228, 0.95)),
    radial-gradient(circle at bottom right, rgba(15, 118, 110, 0.1), transparent 34%);
}

.info-block + .info-block {
  margin-top: 1rem;
}

.info-block h3 {
  margin-bottom: 0.35rem;
  color: var(--accent);
}

.info-block p {
  line-height: 1.6;
  color: var(--ink);
}

.results {
  padding: 1.4rem;
}

.results-toolbar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.message {
  min-height: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.message.is-error {
  color: #9f1d1d;
}

.message.is-success {
  color: var(--primary-strong);
}

.results-container {
  border-radius: 18px;
  border: 1px solid rgba(31, 44, 40, 0.1);
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}

.empty-state {
  padding: 2rem 1.2rem;
  color: var(--muted);
  text-align: center;
}

.signature-block + .signature-block {
  border-top: 1px solid rgba(31, 44, 40, 0.08);
}

.signature-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1rem 0.5rem;
  align-items: end;
}

.signature-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.top-hit {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  background: rgba(188, 108, 37, 0.12);
  color: #8a4f19;
  padding: 0.35rem 0.7rem;
  font-size: 0.86rem;
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.8rem 1rem;
  border-top: 1px solid rgba(31, 44, 40, 0.08);
  text-align: left;
}

th {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

tbody tr:hover {
  background: rgba(15, 118, 110, 0.04);
}

.rank-pill {
  display: inline-flex;
  min-width: 2.2rem;
  justify-content: center;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary-strong);
  font-weight: 700;
}

code {
  background: rgba(31, 44, 40, 0.06);
  padding: 0.1rem 0.35rem;
  border-radius: 8px;
}

@media (max-width: 900px) {
  .hero-grid,
  .steps,
  .status-strip,
  .workbench {
    grid-template-columns: 1fr;
  }

  .shell {
    width: min(100% - 1rem, 1180px);
  }

  .hero,
  .panel,
  .results {
    padding: 1.15rem;
  }

  h1 {
    max-width: none;
  }
}