/* 机器人技能可视化演示交互系统 V1.0 — 明亮工业运维台 */

:root {
  --ink: #0f1c2e;
  --ink-soft: #3d4f66;
  --muted: #6b7c91;
  --paper: #eef1f5;
  --panel: #ffffff;
  --line: #cfd8e3;
  --accent: #1e4a8c;
  --accent-deep: #163a6e;
  --accent-soft: #d6e4f7;
  --amber: #c47a12;
  --amber-soft: #f7ead3;
  --ok: #1f7a4d;
  --down: #a33b3b;
  --hero-wash: linear-gradient(160deg, #e4ebf5 0%, #eef1f5 48%, #e8edf4 100%);
  --grid-line: rgba(30, 74, 140, 0.06);
  --shadow: 0 10px 36px rgba(15, 28, 46, 0.08);
  --radius: 4px;
  --font-display: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", "Courier New", monospace;
  --max: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    var(--hero-wash);
  background-size: 48px 48px, 48px 48px, auto;
  background-attachment: fixed;
  line-height: 1.6;
}

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  display: block;
}

.wrap {
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
}

/* —— 顶栏：对齐 tsingtaoai.com 黑底导航 —— */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #070707;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1200px, calc(100% - 2.5rem));
  margin: 0 auto;
  min-height: 80px;
  padding: 0.45rem 0;
}

.brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.brand-logo {
  height: 42px;
  width: auto;
  display: block;
  flex: 0 0 auto;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: #ffffff;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.15rem 1.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: #f4761f;
  border-bottom-color: #f4761f;
}

/* —— 首屏 —— */
.hero {
  padding: 4.5rem 0 3.25rem;
  animation: rise 0.55s ease both;
}

.hero-solo {
  max-width: 42rem;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 1rem;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 36rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.15s;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn.is-busy {
  opacity: 0.65;
  cursor: wait;
}

.btn[hidden] {
  display: none !important;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--accent-deep);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--accent-deep);
  border-color: var(--line);
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.btn-danger {
  background: transparent;
  color: var(--down);
  border-color: #e0b4b4;
}

.btn-danger:hover:not(:disabled) {
  background: #f8e8e8;
}

.btn.is-online {
  background: var(--ok);
  border-color: var(--ok);
  color: #fff;
}

/* —— 区块 —— */
.section {
  padding: 2.5rem 0 3rem;
  animation: rise 0.65s ease 0.08s both;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-head h2 {
  margin: 0 0 0.4rem;
  font-size: 1.35rem;
  font-weight: 700;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.page-hero {
  padding: 2.5rem 0 1.25rem;
  animation: rise 0.45s ease both;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.page-hero p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 40rem;
}

/* —— 状态面板 —— */
.status-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}

.status-panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
}

.status-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.status-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.status-list li:last-child {
  border-bottom: none;
}

.dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--muted);
  margin-right: 0.45rem;
  vertical-align: middle;
}

.dot.up { background: var(--ok); }
.dot.down { background: var(--down); }
.dot.starting { background: var(--amber); }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #e8edf3;
  color: var(--ink-soft);
}

.badge.up { background: #d8f0e4; color: var(--ok); }
.badge.down { background: #f5e0e0; color: var(--down); }
.badge.starting { background: var(--amber-soft); color: var(--amber); }

.notice {
  margin: 1rem 0 0;
  padding: 0.75rem 0.9rem;
  background: var(--amber-soft);
  border-left: 3px solid var(--amber);
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.repo-note {
  margin: 0.9rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.6;
  word-break: break-all;
}

/* —— 模块入口（非卡片堆砌：分区横条） —— */
.module-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.module-row {
  display: grid;
  grid-template-columns: 7rem 1fr auto;
  gap: 1.25rem;
  align-items: start;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.module-row:last-child {
  border-bottom: 1px solid var(--line);
}

.module-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  padding-top: 0.25rem;
}

.module-row h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.module-row p {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.module-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: stretch;
  min-width: 9.5rem;
}

.cmd {
  margin: 0;
  padding: 0.55rem 0.75rem;
  background: #e4eaf2;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  overflow-x: auto;
}

/* —— 技能 / 步骤 —— */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  padding: 0;
  border-top: 2px solid var(--accent);
}

.skill-card .idx {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.skill-visual {
  height: 140px;
  margin: 0 0 0.75rem;
  background: #e8edf3;
  border: 1px solid var(--line);
  overflow: hidden;
}

.skill-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.skill-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.skill-card p {
  margin: 0 0 0.5rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.skill-keys {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.flow-step {
  padding: 1rem 0;
  border-top: 2px solid var(--accent);
}

.flow-step .n {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 700;
}

.flow-step h3 {
  margin: 0.35rem 0;
  font-size: 1rem;
}

.flow-step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.keys-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0 1.5rem;
}

.keys-table th,
.keys-table td {
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--line);
}

.keys-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.keys-table code {
  font-family: var(--font-mono);
  background: var(--accent-soft);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
  font-size: 0.82rem;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin: 1.75rem 0 0.6rem;
  font-size: 1.15rem;
}

.prose p,
.prose li {
  color: var(--ink-soft);
}

.prose ul {
  padding-left: 1.2rem;
}

/* —— 页脚：对齐 tsingtaoai.com 整段底栏 —— */
.site-footer {
  margin-top: auto;
  background: #20232a;
  color: #e2e7e9;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.footer-main {
  width: min(1200px, calc(100% - 2.5rem));
  margin: 0 auto;
  min-height: 194px;
  padding: 28px 8px 22px;
  display: grid;
  grid-template-columns: 320px 1fr 340px;
  align-items: start;
  box-sizing: border-box;
}

.footer-qrs {
  display: flex;
  gap: 36px;
  padding-top: 8px;
}

.footer-qr {
  width: 92px;
  text-align: center;
}

.footer-qr img {
  width: 75px;
  height: 75px;
  margin: 0 auto 8px;
  display: block;
  background: #fff;
}

.footer-qr span {
  display: block;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
}

.footer-col h3 {
  margin: 0 0 6px;
  color: #999999;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
}

.footer-links {
  display: flex;
  flex-direction: column;
}

.footer-links a {
  color: #e2e7e9;
  font-size: 14px;
  line-height: 25px;
  text-decoration: none;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-contact {
  justify-self: end;
  width: 300px;
}

.footer-contact p {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 0 0 10px;
  color: #e2e7e9;
  font-size: 14px;
  line-height: 1.45;
}

.footer-contact svg {
  flex: 0 0 auto;
  margin-top: 2px;
  color: #878b8c;
}

.footer-contact a {
  color: #e2e7e9;
  text-decoration: none;
}

.footer-bar {
  background: #444444;
  height: 50px;
}

.footer-bar-inner {
  position: relative;
  width: min(1200px, 100%);
  height: 50px;
  margin: 0 auto;
}

.footer-copy {
  position: absolute;
  left: 33px;
  top: 15px;
  margin: 0;
  color: #999999;
  font-size: 13px;
  line-height: 20px;
  white-space: nowrap;
}

.footer-meta {
  position: absolute;
  left: 394px;
  top: 17px;
  width: 783px;
  margin: 0;
  color: #888888;
  font-size: 14px;
  line-height: 26px;
  text-align: right;
  white-space: nowrap;
}

.footer-icp {
  background: #ffffff;
  color: #989898;
  text-align: center;
  font-size: 12px;
  line-height: 1.6;
  padding: 8px 16px 12px;
}

.footer-icp-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-icp a {
  color: #989898;
  text-decoration: none;
}

.footer-icp a:hover {
  color: #666666;
}

.footer-icp-split {
  width: 1px;
  height: 12px;
  background: #989898;
}

.ga-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.ga-link img {
  width: 14px;
  height: 14px;
}

.footer-ipv6 {
  margin-top: 2px;
}

.ipv6-box {
  display: inline-block;
  margin-left: 4px;
  padding: 0 4px;
  border: 1px solid #989898;
  line-height: 16px;
}

.hub-toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%) translateY(120%);
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  max-width: min(90vw, 420px);
  z-index: 100;
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
  pointer-events: none;
}

.hub-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-contact {
    justify-self: start;
  }

  .footer-bar,
  .footer-bar-inner {
    height: auto;
    min-height: 50px;
  }

  .footer-copy,
  .footer-meta {
    position: static;
    width: auto;
    padding: 8px 16px 0;
  }

  .footer-meta {
    padding-bottom: 10px;
    text-align: left;
    white-space: normal;
  }

  .footer-biz {
    display: block;
    margin-top: 2px;
  }
}

@media (max-width: 900px) {
  .topbar-inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 0.2rem;
    width: min(1200px, calc(100% - 1.25rem));
    min-height: 0;
    padding: 0.55rem 0 0.3rem;
  }

  .brand {
    gap: 0.55rem;
  }

  .brand-logo {
    height: 32px;
  }

  .brand-name {
    font-size: clamp(0.78rem, 3.5vw, 0.92rem);
    letter-spacing: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .topbar nav {
    min-width: 0;
  }

  .nav-links {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links li {
    flex: 0 0 auto;
  }

  .nav-links a {
    display: block;
    white-space: nowrap;
    font-size: 0.86rem;
    padding: 0.4rem 0.72rem;
  }
}

@media (max-width: 720px) {
  .module-row {
    grid-template-columns: 1fr;
  }

  .module-actions {
    flex-direction: row;
    flex-wrap: wrap;
    min-width: 0;
  }

  .hero {
    padding-top: 3rem;
  }
}