/* ==========================================================================
   以买邮 ManyMail — 文档页 / AI 自动化页 专用样式（浅色主题）
   与 site.css 共用设计令牌，这里只放这两类页面独有的结构
   ========================================================================== */

.subnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.subnav .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
}

.subnav .links {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: 6px;
  font-size: 0.92rem;
}

.subnav .links a { color: var(--text-dim); }
.subnav .links a:hover { color: var(--brand); }
.subnav .links a.active { color: var(--brand); font-weight: 700; }
.subnav .right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ---------- 文档布局 ---------- */
.doc {
  padding: 44px 0 90px;
}

.doc-layout {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.toc {
  position: sticky;
  top: 88px;
  font-size: 0.9rem;
}

.toc h5 {
  margin: 0 0 12px;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-mute);
  font-weight: 700;
}

.toc a {
  display: block;
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--text-dim);
  border-left: 2px solid transparent;
}

.toc a:hover { background: #f4f7fd; color: var(--brand); }
.toc a.on { border-left-color: var(--brand); color: var(--brand); font-weight: 600; background: #f7f9ff; }

.doc-body { min-width: 0; }

.doc-title {
  font-size: clamp(1.9rem, 3.4vw, 2.5rem);
  margin-bottom: 12px;
}

.doc-lead {
  color: var(--text-dim);
  font-size: 1.04rem;
  max-width: 720px;
}

.doc h2 {
  font-size: 1.5rem;
  margin: 52px 0 8px;
  padding-top: 12px;
  scroll-margin-top: 90px;
}

.doc h3 {
  font-size: 1.08rem;
  margin: 30px 0 6px;
  scroll-margin-top: 90px;
}

.doc p, .doc li { color: var(--text-dim); font-size: 0.95rem; }
.doc p { max-width: 760px; }
.doc ul.bullets { margin: 10px 0 18px; }
.doc ul.bullets li { position: relative; padding-left: 18px; margin-bottom: 6px; }
.doc ul.bullets li::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--brand); opacity: 0.75;
}

/* 代码块：浅底深字，避免整块黑色压眼睛 */
.code {
  position: relative;
  margin: 14px 0 22px;
  background: #f7f9fd;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.83rem;
  line-height: 1.75;
  color: #1f2937;
  white-space: pre;
  tab-size: 2;
}

.code code { font-family: inherit; }
.code .cm { color: #6b7791; }      /* 注释 */
.code .st { color: #0e7490; }      /* 字符串/关键值 */
.code .kw { color: #7c3aed; }      /* 命令 */

/* 行内代码 */
.doc code.inline {
  background: #f2f5fb;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  font-family: var(--mono);
  font-size: 0.86em;
  color: #21304a;
}

/* 接口头 */
.endpoint {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 26px 0 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfcff;
}

.method {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 6px;
  color: #fff;
}

.method.get { background: #0e7490; }
.method.post { background: #3b63f0; }
.method.del { background: #b42318; }

.endpoint .path {
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: #16233b;
}

.endpoint .desc {
  font-size: 0.84rem;
  color: var(--text-mute);
  margin-left: auto;
}

/* 参数表 */
table.params {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 22px;
  font-size: 0.88rem;
}

table.params th,
table.params td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

table.params th {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-mute);
  background: #fafcff;
  font-weight: 700;
}

table.params td code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: #16233b;
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--text-mute);
  white-space: nowrap;
}

.tag.req { border-color: rgba(59, 99, 240, 0.35); color: var(--brand); background: rgba(59, 99, 240, 0.06); }

.note {
  margin: 16px 0 22px;
  padding: 13px 16px;
  border-left: 3px solid var(--brand);
  background: #f6f9ff;
  border-radius: 0 10px 10px 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.note.warn { border-left-color: #b45309; background: #fff8ed; }

/* ---------- AI 页 ---------- */
.ai-hero {
  padding: calc(var(--nav-h) + 72px) 0 76px;
  background: linear-gradient(180deg, #f6f9ff 0%, #fff 66%);
  position: relative;
  overflow: hidden;
}

.ai-hero::before {
  content: "";
  position: absolute;
  top: -280px; left: 50%;
  transform: translateX(-50%);
  width: 1100px; height: 720px;
  background: radial-gradient(circle at 46% 42%, rgba(59, 99, 240, 0.16), transparent 62%),
    radial-gradient(circle at 70% 34%, rgba(124, 58, 237, 0.12), transparent 58%);
  filter: blur(34px);
  pointer-events: none;
}

.ai-hero .wrap { position: relative; z-index: 2; }

.ai-hero-inner { max-width: 860px; margin: 0 auto; text-align: center; }

.ai-hero h1 {
  font-size: clamp(2.1rem, 4.8vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.ai-hero .lead {
  font-size: clamp(1rem, 1.6vw, 1.16rem);
  color: var(--text-dim);
  max-width: 680px;
  margin: 0 auto 30px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 56px;
}

.flow-step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 18px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
  position: relative;
  text-align: left;
}

.flow-step .n {
  width: 26px; height: 26px;
  border-radius: 8px;
  display: grid; place-items: center;
  font-size: 0.78rem; font-weight: 800; color: #fff;
  background: var(--grad);
  margin-bottom: 12px;
}

.flow-step b { display: block; font-size: 0.96rem; margin-bottom: 6px; }
.flow-step span { font-size: 0.82rem; color: var(--text-mute); line-height: 1.6; }
.flow-step code {
  display: block;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--brand);
  word-break: break-all;
  line-height: 1.5;
}

/* 对话演示 */
.demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: stretch;
}

.demo-col {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.demo-head {
  display: flex; align-items: center; gap: 9px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  background: #fafcff;
  font-size: 0.84rem;
  font-weight: 700;
}

.demo-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.demo-head .dot.blue { background: var(--brand); }

.demo-body { padding: 16px; display: flex; flex-direction: column; gap: 10px; }

.msg {
  max-width: 92%;
  padding: 10px 13px;
  border-radius: 12px;
  font-size: 0.86rem;
  line-height: 1.65;
}

.msg.user { background: #f2f5fb; color: var(--text); border-bottom-left-radius: 4px; align-self: flex-start; }
.msg.ai { background: linear-gradient(135deg, #4f7cff, #7b5cf0); color: #fff; border-bottom-right-radius: 4px; align-self: flex-end; }
.msg.sys { background: #f0fbf6; color: #0b6b4c; border: 1px solid rgba(14, 159, 110, 0.22); font-family: var(--mono); font-size: 0.78rem; align-self: center; max-width: 100%; }

.demo-body .code { margin: 0; font-size: 0.76rem; }

/* 能力卡 */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.ai-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 20px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.ai-card b { display: block; font-size: 1rem; margin-bottom: 8px; }
.ai-card p { margin: 0; font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }
.ai-card code { font-family: var(--mono); font-size: 0.78rem; color: var(--brand); }

/* CTA 条 */
.cta-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: space-between;
  border: 1px solid rgba(59, 99, 240, 0.22);
  background: radial-gradient(circle at 12% 0%, rgba(59, 99, 240, 0.1), transparent 60%), #fbfcff;
  border-radius: 20px;
  padding: 30px 32px;
}

.cta-bar h3 { margin: 0 0 6px; font-size: 1.24rem; }
.cta-bar p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .doc-layout { grid-template-columns: 1fr; gap: 28px; }
  .toc { position: static; display: flex; flex-wrap: wrap; gap: 6px; }
  .toc h5 { width: 100%; }
  .toc a { border-left: 0; border: 1px solid var(--line); padding: 5px 10px; border-radius: 999px; }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .demo { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .subnav .links { display: none; }
}

@media (max-width: 720px) {
  .doc { padding: 26px 0 64px; }
  .flow, .ai-grid { grid-template-columns: 1fr; }
  .endpoint { align-items: flex-start; }
  .endpoint .desc { margin-left: 0; width: 100%; }
  table.params { font-size: 0.82rem; }
  table.params th, table.params td { padding: 8px 8px; }
  .code { font-size: 0.76rem; padding: 13px 14px; }
  .cta-bar { padding: 22px; }
}