/* 禅雅塔（星陀智能）- 全局样式 */

:root {
  --bg: #070A12;
  --panel: rgba(255,255,255,.04);
  --panel2: rgba(255,255,255,.07);
  --text: #E0E6F0;
  --muted: rgba(224,230,240,.6);
  --muted2: rgba(224,230,240,.4);
  --line: rgba(224,230,240,.09);
  --brand: #6B9FE8;
  --brand2: #9B8AEE;
  --ok: #4EBB7F;
  --warn: #D4A83A;
  --danger: #D05A6A;
  --shadow: 0 1px 6px rgba(0,0,0,.18);
  --radius: 10px;
  --radius2: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box }
html, body { height: 100% }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit }

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(7,10,18,.82);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 0;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.mark {
  width: 28px;
  height: 28px;
}

.logo:hover .mark { opacity: .85 }

.logo b { letter-spacing: .3px; font-size: 15px }

.links {
  display: flex;
  gap: 2px;
}

.links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all .15s ease;
}

.links a:hover,
.links a.active {
  color: var(--text);
  background: rgba(255,255,255,.04);
}

.links a.active {
  color: var(--brand);
}

/* Buttons */
.btn {
  cursor: pointer;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 14px;
  transition: all .15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn:hover {
  border-color: rgba(107,159,232,.3);
  background: rgba(107,159,232,.06);
}

.btn.primary {
  background: var(--brand);
  border-color: transparent;
  color: #fff;
}

.btn.primary:hover {
  background: #7dadef;
}

.btn.secondary {
  border-color: rgba(78,187,127,.25);
  background: rgba(78,187,127,.06);
}

.btn.secondary:hover {
  border-color: rgba(78,187,127,.4);
}

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color .2s ease;
}

.card:hover {
  border-color: rgba(107,159,232,.14);
}

/* Hero Section */
.hero { padding: 56px 0 24px }

.grid-hero {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 18px;
  align-items: stretch;
}

.hero-left { padding: 28px }
.hero-right { padding: 24px; position: relative }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
}

h1 {
  margin: 12px 0 10px;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.18;
  letter-spacing: -.3px;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
  max-width: 56ch;
}

.actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Mini Pills */
.mini {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.mini .pill {
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
}

.pill b { display: block; font-size: 13px }
.pill span { display: block; margin-top: 4px; color: var(--muted2); font-size: 12px; line-height: 1.5 }

/* Panel & Stack */
.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-title b { font-size: 14px }

.badge {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
}

.stack { display: grid; gap: 8px }

.stack .row {
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: border-color .15s ease;
}

.stack .row:hover {
  border-color: rgba(107,159,232,.18);
}

.ic {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  flex: 0 0 auto;
  margin-top: 7px;
}

.row b { display: block; font-size: 14px }
.row p { margin: 4px 0 0; color: var(--muted2); font-size: 12.5px; line-height: 1.55 }

/* Sections */
section { padding: 20px 0 }

.page-header {
  padding: 68px 0 32px;
  text-align: center;
}

.page-header h1 {
  margin: 0 0 14px;
}

.page-header .lead {
  max-width: 62ch;
  margin: 0 auto;
  font-size: 16px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.section-head h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -.2px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 62ch;
}

/* Grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px }

/* Feature Cards */
.feature { padding: 18px }
.feature h3 { margin: 0 0 6px; font-size: 15px }
.feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65 }

.feature-icon {
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: var(--brand);
  margin-bottom: 14px;
}

/* Tags */
.tagrow { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap }

.tag {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
  padding: 4px 8px;
  border-radius: 4px;
}

/* Mermaid */
.mermaid-wrap { padding: 16px }

.mermaid {
  background: rgba(255,255,255,.02);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  overflow: auto;
}

/* Quote */
.quote {
  padding: 16px 20px;
  border-left: 2px solid var(--brand);
  background: rgba(255,255,255,.02);
  border-radius: var(--radius);
}

.quote p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

/* Split & List */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px }

.list {
  margin: 0;
  padding-left: 16px;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.list li { margin-bottom: 6px }

/* KBD */
.kbd {
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding: 3px 7px;
  border-radius: 4px;
  color: var(--text);
}

/* Footer */
.footer {
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  margin-top: 20px;
  color: var(--muted2);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links { display: flex; gap: 18px; flex-wrap: wrap }

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  transition: color .15s ease;
}

.footer-links a:hover { color: var(--brand) }

.footer-beian {
  text-align: center;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted2);
}

.footer-beian a {
  color: var(--muted2);
  text-decoration: none;
  transition: color .15s ease;
}

.footer-beian a:hover { color: var(--brand) }

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(6px);
  transition: all .4s ease;
}

.reveal.show {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 920px) {
  .grid-hero { grid-template-columns: 1fr }
  .grid-3 { grid-template-columns: 1fr }
  .grid-2 { grid-template-columns: 1fr }
  .grid-4 { grid-template-columns: repeat(2, 1fr) }
  .links { display: none }
  .split { grid-template-columns: 1fr }
  .nav-inner { flex-wrap: wrap }
}

@media (max-width: 520px) {
  .mini { grid-template-columns: 1fr }
  .grid-4 { grid-template-columns: 1fr }
}

/* Contact Form */
.contact-form { display: grid; gap: 16px }

.form-group { display: flex; flex-direction: column; gap: 6px }

.form-group label { font-size: 13px; color: var(--muted) }

.form-group input,
.form-group textarea,
.form-group select {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  transition: all .15s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: rgba(107,159,232,.4);
  background: rgba(107,159,232,.04);
}

.form-group textarea { min-height: 100px; resize: vertical }

/* Stat Cards */
.stat-card { padding: 20px; text-align: center }

.stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--brand);
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 22px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding-bottom: 20px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -21px;
  top: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  border: 2px solid var(--bg);
}

.timeline-item h4 { margin: 0 0 4px; font-size: 14px }
.timeline-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6 }