/* /atlas/* — pipeline pages
 * Builds on site.css base.
 */

/* ── pipeline hero ───────────────────────────────────── */
.atlas-hero {
  padding: 56px 0 28px;
  background: linear-gradient(180deg, var(--c-brand-soft) 0%, transparent 100%);
}
.atlas-hero h1 {
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.02em;
  margin: 8px 0 14px;
  font-weight: 800;
}
.atlas-hero-lede {
  font-size: 1.05rem;
  color: var(--c-text-soft);
  max-width: 760px;
  margin: 0;
  line-height: 1.6;
}

.section-tag {
  font-size: 12px; font-weight: 700;
  color: var(--c-brand);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 6px;
}

/* ── 4-step pipeline ────────────────────────────────── */
.pipeline { padding: 40px 0 56px; }
.pl-grid {
  display: grid;
  grid-template-columns: 1fr 24px 1fr 24px 1fr 24px 1fr;
  gap: 12px;
  align-items: stretch;
}
.pl-step {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  padding: 22px 20px 18px;
  text-decoration: none; color: var(--c-text);
  display: flex; flex-direction: column;
  transition: transform .15s, box-shadow .15s, border-color .15s;
  border-top: 3px solid var(--c-brand);
}
.pl-step:nth-of-type(1) { border-top-color: #2c6a3a; }
.pl-step:nth-of-type(3) { border-top-color: var(--c-brand); }
.pl-step:nth-of-type(5) { border-top-color: var(--c-warm, #a4731c); }
.pl-step:nth-of-type(7) { border-top-color: #5c2c70; }
.pl-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(15,23,42,.08);
  text-decoration: none;
}
.pl-step-num {
  font-family: var(--font-mono);
  font-size: 14px; font-weight: 700;
  color: var(--c-text-mute);
  letter-spacing: 0.06em;
}
.pl-step-icon { font-size: 1.8rem; margin: 4px 0 6px; }
.pl-step h3 { margin: 0 0 6px; font-size: 1.1rem; font-weight: 700; }
.pl-step p {
  font-size: 0.88rem;
  color: var(--c-text-soft);
  margin: 0 0 12px;
  flex: 1;
  line-height: 1.5;
}
.pl-step-meta {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 11.5px;
  color: var(--c-text-mute);
  border-top: 1px solid var(--c-border);
  padding-top: 8px;
  margin-bottom: 10px;
}
.pl-step-cta {
  color: var(--c-brand);
  font-weight: 600;
  font-size: 0.88rem;
}
.pl-arrow {
  font-size: 24px;
  color: var(--c-text-mute);
  display: flex; align-items: center; justify-content: center;
  font-weight: 300;
}
@media (max-width: 980px) {
  .pl-grid { grid-template-columns: 1fr; }
  .pl-arrow { display: none; }
}

/* ── 技术要点 ────────────────────────────────────────── */
.atlas-tech {
  padding: 56px 0;
  background: var(--c-section-alt, #f1f5f9);
  border-top: 1px solid var(--c-border);
}
.atlas-tech .section-title {
  font-size: 1.5rem; margin: 0 0 24px;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.tech-card {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  padding: 24px 22px;
}
.tech-card-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-brand);
  margin-bottom: 6px;
}
.tech-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
}
.tech-card p {
  color: var(--c-text-soft);
  font-size: 0.92rem;
  margin: 0 0 12px;
  line-height: 1.55;
}
.tech-link {
  color: var(--c-brand);
  font-weight: 600;
  font-size: 0.88rem;
}

/* ── CTA ─────────────────────────────────────────────── */
.atlas-cta {
  padding: 56px 0;
  text-align: center;
}
.atlas-cta h2 {
  font-size: 1.6rem;
  margin: 0 0 10px;
  font-weight: 700;
}
.atlas-cta p {
  color: var(--c-text-soft);
  max-width: 600px;
  margin: 0 auto 24px;
}
.atlas-cta-row {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}

/* ── Sub-pages (lab/stats/corpus/instruct) ──────────── */
.sub-hero {
  padding: 36px 0 24px;
  background: linear-gradient(180deg, var(--c-brand-soft) 0%, transparent 100%);
}
.sub-hero h1 {
  font-size: 1.9rem;
  letter-spacing: -0.02em;
  margin: 4px 0 10px;
  font-weight: 700;
}
.sub-lede {
  font-size: 0.98rem;
  color: var(--c-text-soft);
  margin: 0;
}
.sub-lede code {
  background: white;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--c-border);
  font-size: 0.86em;
  font-family: var(--font-mono);
}
.crumbs {
  font-size: 13px;
  color: var(--c-text-mute);
  margin-bottom: 8px;
}
.crumbs a { color: var(--c-text-soft); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

.container.narrow { max-width: 820px; }

/* ── coming soon block ──────────────────────────────── */
.coming-soon {
  background: white;
  border: 1px solid var(--c-border);
  border-left: 4px solid var(--c-accent, #f59e0b);
  border-radius: 8px;
  padding: 18px 22px;
  margin-top: 20px;
  display: flex;
  gap: 18px;
}
.coming-soon.big { padding: 28px 28px; margin-top: 32px; }
.cs-icon { font-size: 1.8rem; }
.coming-soon strong {
  display: block;
  color: var(--c-text);
  margin-bottom: 6px;
}
.coming-soon p {
  margin: 0 0 8px;
  color: var(--c-text-soft);
  font-size: 0.94rem;
  line-height: 1.6;
}
.coming-soon ul { margin: 8px 0 0; padding-left: 20px; color: var(--c-text-soft); }
.coming-soon ul li { margin-bottom: 4px; font-size: 0.94rem; }

/* ── stats page ─────────────────────────────────────── */
.stats-page { padding: 32px 0 56px; }
.stats-loading, .stats-error {
  text-align: center;
  padding: 40px;
  color: var(--c-text-mute);
}
.stats-error { color: #b91c1c; background: #fee; border-radius: 8px; }

.stats-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}
.stat-tile {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 18px 16px;
  text-align: center;
}
.stat-label {
  font-size: 11.5px;
  color: var(--c-text-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 6px;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-navy, #0b1f3a);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 880px) {
  .stats-grid { grid-template-columns: 1fr; }
}
.stats-block {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 18px 20px;
}
.stats-block-meta { grid-column: span 2; }
@media (max-width: 880px) {
  .stats-block-meta { grid-column: span 1; }
}
.stats-block h3 {
  font-size: 1rem;
  margin: 0 0 14px;
  color: var(--c-text);
}
.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.stats-table th, .stats-table td {
  text-align: left;
  padding: 6px 4px;
  border-bottom: 1px solid var(--c-border);
}
.stats-table th {
  color: var(--c-text-mute);
  font-weight: 600;
  font-size: 0.82rem;
}
.stats-table td:last-child {
  font-family: var(--font-mono);
  text-align: right;
}
.stats-table .span {
  font-style: italic;
  color: var(--c-text-mute);
  font-size: 0.86rem;
  max-width: 280px;
}
.meta-dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 6px 14px;
  margin: 0;
  font-size: 0.92rem;
}
.meta-dl dt {
  color: var(--c-text-mute);
  font-weight: 600;
}
.meta-dl dd { margin: 0; }
.meta-dl code {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}

/* ── lab page (KG viz + extract demo) ───────────────── */
.lab-page { padding: 32px 0 56px; }
.lab-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 980px) { .lab-grid { grid-template-columns: 1fr; } }

.lab-pane {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  padding: 24px 24px;
}
.lab-pane h2 {
  font-size: 1.15rem;
  margin: 0 0 8px;
  font-weight: 700;
}
.lab-pane > p {
  margin: 0 0 14px;
  color: var(--c-text-soft);
  font-size: 0.92rem;
}
.lab-form label {
  display: block;
  font-size: 0.88rem;
  color: var(--c-text-soft);
  margin-bottom: 12px;
}
.lab-form textarea {
  width: 100%;
  padding: 12px;
  font-family: var(--font-sys);
  font-size: 0.92rem;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  resize: vertical;
  margin-top: 6px;
}
.lab-form textarea:focus {
  outline: none;
  border-color: var(--c-brand);
}
.lab-form-hint {
  margin-left: 12px;
  font-size: 11.5px;
  color: var(--c-text-mute);
}
.lab-form-hint code {
  background: #f1f5f9;
  padding: 1px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.lab-result {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--c-border);
}
.lab-result h3 {
  font-size: 1rem;
  margin: 0 0 12px;
}
.lab-result h4 {
  font-size: 0.86rem;
  color: var(--c-text-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 16px 0 8px;
}
.lab-loading { color: var(--c-text-mute); }
.lab-warn {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #92400e;
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 0.92rem;
}
.lab-error {
  background: #fee;
  border: 1px solid #fca5a5;
  color: #b91c1c;
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 0.92rem;
}
.result-block { margin-bottom: 16px; }