/* ==========================================================================
   QupuTech MCP 介绍页专用样式
   - 继承 visual-site.css 的 :root tokens (--bg/--panel/--blue/--ink/--muted/--line)
   - 新增 neon 与玻璃拟态专属 token
   - 视觉对标 moltbook 风格：暗底 + 渐变 + 等宽 + 玻璃拟态 + 网格背景
   ========================================================================== */

:root {
  --neon-purple: #a300ff;
  --neon-cyan: #00f0ff;
  --neon-green: #36c579;
  --code-bg: rgba(255, 255, 255, .04);
  --code-border: rgba(125, 184, 255, .18);
  --glass-bg: rgba(16, 21, 34, .75);
  --grid-line: rgba(255, 255, 255, .04);
  --mono-stack: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* === Hero === */
.mcp-hero {
  position: relative;
  padding: 160px 0 110px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at top right, rgba(26, 164, 255, .22), transparent 55%),
    radial-gradient(ellipse at bottom left, rgba(163, 0, 255, .14), transparent 60%),
    linear-gradient(180deg, #06133a 0%, #050811 100%);
  border-bottom: 1px solid var(--line);
}

.mcp-page {
  overflow-x: hidden;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.mcp-page p,
.mcp-page li,
.mcp-page h1,
.mcp-page h2,
.mcp-page h3,
.mcp-page h4,
.mcp-page span,
.mcp-page a,
.mcp-page summary,
.mcp-page code {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.mcp-page .site-header .nav,
.mcp-page .site-header .nav-links {
  max-width: 100%;
}

.mcp-page .code-block,
.mcp-page .tool-card,
.mcp-page .section-inner,
.mcp-page .mcp-hero-inner,
.mcp-page .mcp-cta-inner,
.mcp-page .mcp-diagram-cell {
  min-width: 0;
  max-width: 100%;
}

.mcp-page .code-block-pre {
  max-width: 100%;
}

.mcp-hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  pointer-events: none;
}

.mcp-hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.mcp-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(125, 184, 255, .08);
  border: 1px solid rgba(125, 184, 255, .22);
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: #7db8ff;
  letter-spacing: 2.2px;
  text-transform: uppercase;
}

.mcp-eyebrow .eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green);
}

.mcp-hero-title {
  margin: 0;
  max-width: 100%;
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, #fff 30%, #7db8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  overflow-wrap: anywhere;
  word-break: normal;
}

.mcp-hero-lead {
  max-width: 760px;
  width: 100%;
  margin: 28px 0 0;
  font-size: 19px;
  line-height: 1.8;
  color: rgba(244, 247, 251, .82);
  overflow-wrap: anywhere;
  word-break: normal;
}

.mcp-endpoint-box {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 40px 0 0;
  padding: 16px 20px;
  border: 1px solid var(--code-border);
  border-radius: 14px;
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: var(--mono-stack);
  font-size: 15px;
  color: var(--ink);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .35);
  flex-wrap: wrap;
}

.mcp-endpoint-url {
  flex: 1;
  min-width: 0;
  font-family: var(--mono-stack);
  font-size: 16px;
  color: var(--blue-2);
  background: transparent;
  border: 0;
  padding: 0;
  word-break: break-all;
}

.mcp-status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 12px var(--neon-green);
  flex-shrink: 0;
}

.pulse-anim {
  animation: pulse-dot 1.6s ease-in-out infinite;
}

.mcp-status-text {
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.6px;
  color: var(--neon-green);
  text-transform: uppercase;
  white-space: nowrap;
}

.mcp-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--code-border);
  border-radius: 999px;
  background: rgba(11, 116, 255, .12);
  color: #7db8ff;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .15s ease;
}

.mcp-copy-btn:hover {
  background: rgba(11, 116, 255, .22);
  color: #fff;
}

.mcp-copy-btn:active {
  transform: translateY(1px);
}

.mcp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 0;
}

/* === About / Diagram === */
.mcp-about {
  background: var(--bg);
}

.mcp-diagram-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 36px;
}

.mcp-diagram-cell {
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .018));
  text-align: center;
}

.mcp-diagram-cell .step-num {
  display: block;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #7db8ff;
}

.mcp-diagram-cell .step-title {
  display: block;
  margin-top: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.mcp-diagram-cell .step-meta {
  display: block;
  margin-top: 6px;
  font-family: var(--mono-stack);
  font-size: 12px;
  color: var(--muted);
  word-break: break-all;
}

.mcp-diagram-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-family: var(--mono-stack);
  font-size: 18px;
}

/* === Tools grid === */
.mcp-tools {
  background: #0b0e17;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-width: 100%;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
  overflow: hidden;
}

.tool-card:hover {
  border-color: rgba(125, 184, 255, .4);
  transform: translateY(-2px);
  box-shadow: 0 20px 48px rgba(11, 116, 255, .12);
}

.tool-card-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.tool-num {
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.6px;
  color: var(--neon-purple);
  flex-shrink: 0;
}

.tool-name {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--mono-stack);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.tool-json-link {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 240, 255, .1);
  border: 1px solid rgba(0, 240, 255, .3);
  color: var(--neon-cyan);
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  text-decoration: none;
  flex-shrink: 0;
  transition: background .2s ease;
}

.tool-json-link:hover {
  background: rgba(0, 240, 255, .22);
  color: #fff;
}

.tool-card-body {
  padding-top: 18px;
}

.tool-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.tool-params {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tool-param {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(11, 116, 255, .08);
  border: 1px solid rgba(11, 116, 255, .22);
  font-size: 12px;
  max-width: 100%;
  min-width: 0;
}

.param-key {
  color: #9ccaff;
  font-family: var(--mono-stack);
  font-weight: 600;
  flex-shrink: 0;
}

.param-type {
  color: var(--muted);
  font-family: var(--mono-stack);
  font-size: 11px;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.tool-example {
  margin-top: 18px;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

.tool-example summary {
  cursor: pointer;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: #7db8ff;
  list-style: none;
}

.tool-example summary::-webkit-details-marker {
  display: none;
}

.tool-example summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 6px;
  transition: transform .2s ease;
}

.tool-example[open] summary::before {
  transform: rotate(90deg);
}

/* === Code block === */
.code-block {
  border: 1px solid var(--code-border);
  border-radius: 14px;
  background: var(--code-bg);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--code-border);
  background: rgba(255, 255, 255, .02);
}

.code-block-lang {
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--muted);
}

.code-block-pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
  font-family: var(--mono-stack);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  background: transparent;
}

.code-block-pre code {
  font-family: inherit;
  background: transparent;
  padding: 0;
}

/* === Quickstart === */
.mcp-quickstart {
  background: var(--bg);
}

.step-line {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.step-num-inline {
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11, 116, 255, .18);
  color: #7db8ff;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

/* === Specs === */
.mcp-specs {
  background: #0b0e17;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 36px;
  font-size: 15px;
}

.spec-table tr {
  border-bottom: 1px solid var(--line);
}

.spec-table th {
  width: 200px;
  text-align: left;
  padding: 18px 24px 18px 0;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--muted);
  vertical-align: top;
}

.spec-table td {
  padding: 18px 0;
  color: var(--ink);
  line-height: 1.7;
  word-break: break-word;
}

.spec-table code {
  font-family: var(--mono-stack);
  font-size: 14px;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 4px;
  padding: 1px 6px;
  color: #9ccaff;
}

/* === Use Cases === */
.mcp-usecases {
  background: var(--bg);
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.mcp-usecase-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .018));
  transition: border-color .25s ease, transform .25s ease;
}

.mcp-usecase-card:hover {
  border-color: rgba(125, 184, 255, .35);
  transform: translateY(-2px);
}

.usecase-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(245, 185, 66, .12);
  border: 1px solid rgba(245, 185, 66, .3);
  color: var(--gold-2);
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.usecase-title {
  margin: 18px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.usecase-desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* === FAQ === */
.mcp-faq {
  background: #0b0e17;
}

.faq-list {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "Q";
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11, 116, 255, .18);
  color: #7db8ff;
  font-family: "Sora", Inter, Arial, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.faq-item summary::after {
  content: "▸";
  margin-left: auto;
  color: var(--muted);
  transition: transform .2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(90deg);
}

.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 251, .82);
}

.faq-answer code {
  font-family: var(--mono-stack);
  font-size: 13px;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 4px;
  padding: 1px 6px;
  color: #9ccaff;
}

/* === CTA === */
.mcp-cta {
  background:
    radial-gradient(ellipse at top right, rgba(11, 116, 255, .22), transparent 55%),
    linear-gradient(180deg, #06133a 0%, #050811 100%);
  border-top: 1px solid var(--line);
}

.mcp-cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.mcp-cta-title {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 30%, #7db8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mcp-cta-lead {
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(244, 247, 251, .82);
}

.mcp-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin: 32px 0 0;
}

/* === Responsive === */
@media (max-width: 1100px) {
  .tool-grid,
  .usecase-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mcp-diagram-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mcp-hero-grid-bg {
    background-size: 36px 36px;
  }

  .spec-table th {
    width: 160px;
  }
}

@media (max-width: 700px) {
  .mcp-hero {
    padding: 130px 0 80px;
  }

  .mcp-hero-title {
    font-size: clamp(28px, 9vw, 40px);
    line-height: 1.15;
  }

  .mcp-hero-lead {
    font-size: 15px;
    line-height: 1.7;
  }

  .mcp-endpoint-box {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 14px 16px;
    font-size: 13px;
  }

  .mcp-endpoint-url {
    font-size: 13px;
    word-break: break-all;
  }

  .mcp-status-text {
    text-align: center;
    font-size: 10px;
    letter-spacing: 1px;
  }

  .tool-grid,
  .usecase-grid,
  .mcp-diagram-grid {
    grid-template-columns: 1fr;
  }

  .mcp-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .mcp-hero-actions .btn {
    text-align: center;
  }

  .section-head h2 {
    font-size: clamp(24px, 6vw, 32px);
    line-height: 1.25;
  }

  .spec-table th {
    width: 110px;
    font-size: 11px;
    padding-right: 14px;
  }

  .tool-card,
  .mcp-usecase-card {
    padding: 22px;
  }

  /* Nav 简化为品牌 + 语言切换,避免 8 个链接挤爆窄屏 */
  .mcp-page .site-header .nav-links {
    display: none;
  }

  .mcp-page .site-header .nav {
    justify-content: space-between;
  }
}