/* MAXLAKER 产品介绍文档 · 共享样式（浅色科技风，与官网视觉一致） */
:root {
  --blue-400: #00a8ff;
  --blue-600: #0077b6;
  --cyan-400: #48cae4;
  --text: #12263a;
  --text-secondary: #43647e;
  --text-muted: #6b86a0;
  --bg-alt: #f0f9ff;
  --border: rgba(0, 168, 255, 0.16);
  --border-strong: rgba(0, 119, 182, 0.35);
  --gradient-brand: linear-gradient(135deg, #00a8ff 0%, #48cae4 100%);
  --gradient-strong: linear-gradient(135deg, #0077b6 0%, #00a8ff 55%, #48cae4 100%);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(180deg, #e6f7ff 0%, #ffffff 420px);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-600); text-decoration: none; }
a:hover { color: var(--blue-400); }
code {
  font-family: Consolas, 'SF Mono', Menlo, monospace; font-size: 0.92em;
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 6px; color: var(--blue-600);
}

/* ===== 顶栏 ===== */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.topbar img { height: 38px; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.topbar a.back {
  font-size: 13px; font-weight: 600; color: var(--blue-600);
  border: 1px solid var(--border-strong); border-radius: 999px; padding: 6px 16px;
  transition: background 0.15s;
}
.topbar a.back:hover { background: var(--bg-alt); }

/* ===== 页头 ===== */
.page-head { max-width: 1160px; margin: 0 auto; padding: 32px 24px 4px; }
.hero { display: flex; align-items: center; gap: 20px; }
.hero .mark {
  width: 84px; height: 84px; flex-shrink: 0; border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; box-shadow: 0 12px 32px rgba(0, 119, 182, 0.25);
}
.hero .mark svg { width: 44px; height: 44px; }
.hero h1 { font-size: 28px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; }
.hero h1 .zh { font-size: 18px; font-weight: 500; color: var(--text-muted); margin-left: 12px; }
.hero .badges { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero .tagline { margin-top: 6px; font-size: 14px; color: var(--text-secondary); }
.badge {
  font-size: 12px; font-weight: 700; color: #fff; border-radius: 999px; padding: 4px 12px;
  background-image: var(--gradient-brand);
}
.badge.ghost {
  color: var(--blue-600); background: rgba(0, 168, 255, 0.1);
  border: 1px solid var(--border-strong);
}
.lead {
  margin-top: 22px; font-size: 16px; font-weight: 500; color: var(--text-secondary);
  border-left: 4px solid; border-image: var(--gradient-brand) 1;
  padding-left: 16px;
}

/* ===== 双栏布局（目录 + 正文） ===== */
.doc-layout {
  max-width: 1160px; margin: 0 auto; padding: 12px 24px 56px;
  display: grid; grid-template-columns: 196px minmax(0, 1fr);
  gap: 32px; align-items: start;
}
.toc {
  position: sticky; top: 80px;
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  padding: 14px 10px;
}
.toc .toc-title {
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted); padding: 0 10px 8px;
}
.toc a {
  display: block; padding: 5px 10px; border-radius: 8px;
  font-size: 13px; color: var(--text-secondary); border-left: 2px solid transparent;
}
.toc a:hover { color: var(--blue-600); background: var(--bg-alt); }
.toc a.active {
  color: var(--blue-600); background: var(--bg-alt);
  border-left-color: var(--blue-400); font-weight: 600;
}
.doc { min-width: 0; }

/* 无障碍：键盘用户可直接跳过顶栏；移动端保留可操作的章节导航。 */
.skip-link {
  position: fixed; left: 16px; top: 8px; z-index: 30;
  padding: 8px 14px; border-radius: 8px; background: var(--blue-600); color: #fff;
  transform: translateY(-150%); transition: transform 0.15s;
}
.skip-link:focus { transform: translateY(0); color: #fff; }
.toc-mobile { display: none; }

/* ===== 产品速览 ===== */
.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
  margin-bottom: 6px;
}
.fact { background: #fff; padding: 13px 16px; }
.fact dt { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.fact dd { font-size: 14px; font-weight: 600; color: var(--text); }

/* ===== 章节 ===== */
section { margin-bottom: 40px; scroll-margin-top: 88px; }
section h2 {
  font-size: 20px; font-weight: 600; margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  display: flex; align-items: center; gap: 10px;
}
section h2 .no {
  display: inline-flex; width: 30px; height: 30px; flex-shrink: 0;
  align-items: center; justify-content: center;
  border-radius: 9px; background-image: var(--gradient-brand);
  color: #fff; font-size: 13px; font-weight: 700;
}
section h3 { font-size: 15px; margin: 14px 0 6px; color: var(--blue-600); }
p { margin-bottom: 10px; }
.doc p, .doc li { font-size: 15px; }
ul, ol { padding-left: 22px; margin-bottom: 10px; }
li { margin-bottom: 4px; }

/* 双栏正文块 */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cols > div { min-width: 0; }

/* ===== 表格 ===== */
table {
  width: 100%; border-collapse: collapse; margin: 12px 0;
  font-size: 14px; background: #fff; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border);
}
th, td { padding: 11px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th {
  background: var(--bg-alt); color: var(--blue-600); font-weight: 700; white-space: nowrap;
}
tbody tr:nth-child(even) { background: #f8fcff; }
tr:last-child td { border-bottom: none; }

/* ===== 模型芯片 ===== */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 12px; }
.chip {
  font-size: 13px; color: var(--text-secondary);
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 14px;
}

/* ===== 步骤 ===== */
.steps { counter-reset: step; list-style: none; padding-left: 0; }
.steps li {
  counter-increment: step; position: relative; padding: 10px 0 10px 46px;
  border-bottom: 1px dashed var(--border);
}
.steps li:last-child { border-bottom: none; }
.steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 9px;
  width: 32px; height: 32px; border-radius: 10px;
  background-image: var(--gradient-brand); color: #fff;
  font-weight: 700; display: flex; align-items: center; justify-content: center;
}

/* ===== 产品定位 ===== */
.pos-callout {
  background: linear-gradient(135deg, rgba(0, 168, 255, 0.08), rgba(72, 202, 228, 0.10));
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--blue-400);
  border-radius: 14px;
  padding: 16px 22px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}
.pos-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.pos-item {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px;
}
.pos-item strong { display: block; color: var(--blue-600); margin-bottom: 4px; font-size: 14px; }
.pos-item p { font-size: 13px; color: var(--text-secondary); margin: 0; }

/* ===== 核心价值 ===== */
.value-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px; margin-top: 8px;
}
.value-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; transition: box-shadow 0.15s, transform 0.15s;
}
.value-card:hover { box-shadow: 0 8px 24px rgba(0, 119, 182, 0.12); transform: translateY(-2px); }
.value-card h3 { font-size: 15px; color: var(--blue-600); margin: 0 0 6px; }
.value-card p { font-size: 13px; color: var(--text-secondary); margin: 0; }

/* ===== 独特优势 ===== */
.adv-list { list-style: none; padding: 0; margin: 8px 0 4px; }
.adv-list li {
  position: relative; padding: 8px 0 8px 26px;
  border-bottom: 1px dashed var(--border); font-size: 14px;
}
.adv-list li:last-child { border-bottom: none; }
.adv-list li::before {
  content: '◆'; position: absolute; left: 6px; top: 10px;
  color: var(--blue-400); font-size: 11px;
}
.adv-list strong { color: var(--text); }

/* ===== 面向客群 ===== */
.audience-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px; margin-top: 8px;
}
.audience-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  border-top: 3px solid var(--blue-400); padding: 14px 16px;
}
.audience-card strong { display: block; font-size: 14px; margin-bottom: 4px; }
.audience-card p { font-size: 13px; color: var(--text-secondary); margin: 0; }

/* ===== 常见问题 ===== */
details {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 18px; margin-bottom: 10px;
}
summary { cursor: pointer; font-weight: 600; list-style: none; }
summary::before { content: '＋ '; color: var(--blue-600); font-weight: 700; }
details[open] summary::before { content: '－ '; }
details p { margin: 10px 0 0; font-size: 14px; color: var(--text-secondary); }

/* ===== 页脚 ===== */
.footer-note {
  max-width: 1160px; margin: 0 auto 48px; padding: 20px;
  border-radius: 14px;
  background: var(--bg-alt); border: 1px solid var(--border);
  font-size: 13px; color: var(--text-muted); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: space-between;
}
.footer-note .actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.footer-note a.btn {
  background-image: var(--gradient-brand); color: #fff; font-weight: 600;
  border-radius: 999px; padding: 8px 22px; font-size: 14px;
}
.footer-note a.btn:hover { color: #fff; filter: brightness(1.05); }
.footer-note a.ghost {
  border: 1px solid var(--border-strong); color: var(--blue-600); font-weight: 600;
  border-radius: 999px; padding: 7px 18px; font-size: 13px;
}
.footer-note a.ghost:hover { background: #fff; }

@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .toc-mobile {
    display: flex; align-items: center; gap: 10px; grid-column: 1 / -1;
    margin-bottom: 22px; padding: 10px 12px; border: 1px solid var(--border);
    border-radius: 12px; background: rgba(255, 255, 255, 0.88);
  }
  .toc-mobile-label { flex: 0 0 auto; color: var(--text-muted); font-size: 12px; font-weight: 700; }
  .toc-mobile select {
    min-width: 0; flex: 1; padding: 7px 10px; border: 1px solid var(--border-strong);
    border-radius: 8px; background: #fff; color: var(--text); font: inherit; font-size: 13px;
  }
}
@media (max-width: 640px) {
  .hero { flex-direction: column; align-items: flex-start; }
  .hero h1 { font-size: 26px; }
  .pos-grid, .cols { grid-template-columns: 1fr; }
}

/* ===== 界面截图 ===== */
figure.shot {
  margin: 18px 0 4px;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}
figure.shot img {
  display: block; width: 100%; height: auto;
}
figure.shot figcaption {
  padding: 10px 14px; font-size: 12.5px; color: var(--text-muted);
  border-top: 1px solid var(--border); background: var(--bg-alt);
  line-height: 1.6;
}

/* ===== Hero 双栏（标题 + 实景演示卡） ===== */
.hero-split {
  display: grid; grid-template-columns: 1fr 420px;
  gap: 36px; align-items: center;
  max-width: 1160px; margin: 0 auto; padding: 32px 24px 0;
}
.hero-split .hero { align-items: flex-start; }
.hero-cta { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 10px; }
.hero-cta a.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background-image: var(--gradient-brand); color: #fff; font-weight: 600;
  border-radius: 999px; padding: 10px 24px; font-size: 14px;
  transition: box-shadow 0.15s, transform 0.15s, filter 0.15s;
}
.hero-cta a.btn:hover { color: #fff; box-shadow: 0 8px 24px rgba(0, 168, 255, 0.35); transform: translateY(-1px); filter: brightness(1.05); }
.hero-cta a.outline {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border-strong); color: var(--blue-600); font-weight: 600;
  border-radius: 999px; padding: 10px 22px; font-size: 14px;
  transition: background 0.15s;
}
.hero-cta a.outline:hover { background: var(--bg-alt); }

/* ===== 深色实景代码卡 ===== */
.demo-card {
  background: linear-gradient(160deg, #0b2a44 0%, #12263a 100%);
  border: 1px solid var(--border-strong);
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 18px 48px rgba(0, 119, 182, 0.22);
}
.demo-card .dc-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 11px 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}
.demo-card .dc-dots { display: flex; gap: 6px; }
.demo-card .dc-dots span { width: 10px; height: 10px; border-radius: 50%; display: block; }
.demo-card .dc-dots span:nth-child(1) { background: #ff5f57; }
.demo-card .dc-dots span:nth-child(2) { background: #febc2e; }
.demo-card .dc-dots span:nth-child(3) { background: #28c840; }
.demo-card .dc-title {
  font-family: ui-monospace, 'SF Mono', Consolas, monospace;
  font-size: 11px; letter-spacing: 0.04em; color: rgba(234, 246, 251, 0.7);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.demo-card .dc-code {
  padding: 14px 16px; overflow-x: auto;
  font-family: ui-monospace, 'SF Mono', Consolas, monospace;
  font-size: 12.5px; line-height: 1.9; color: #a8c8e4;
}
.demo-card .dc-code div:first-child { color: #7adff0; }
.demo-card .dc-status {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-top: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.05);
  font-family: ui-monospace, 'SF Mono', Consolas, monospace;
  font-size: 11.5px; color: #9ec9e8;
}
.demo-card .dc-status::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: #28c840; flex-shrink: 0;
}

/* ===== 对比表强调列 ===== */
table.compare td.col-via { color: var(--text-secondary); }
table.compare th.col-via { color: var(--blue-600); }
table.compare td:first-child { font-weight: 600; color: var(--text); white-space: nowrap; }
table.compare td { background: #fff; }
table.compare tbody tr:hover td { background: #f8fcff; }

@media (max-width: 900px) {
  .hero-split { grid-template-columns: 1fr; }
}