/* cfse-demo —— CF Static Export Pro 官方演示站风格
   设计目标：产品官网 + 文档站，白底、克制、以内容为主。 */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --bg-ink: #0b1220;
  --ink: #101828;
  --ink-2: #344054;
  --muted: #667085;
  --line: #e6e9f0;
  --line-2: #d5dae6;
  --brand: #3355ff;
  --brand-ink: #2440d8;
  --brand-soft: #eef1ff;
  --violet: #7c3aed;
  --green: #0f9d58;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
code, pre, kbd { font-family: var(--mono); }

.shell { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-in { display: flex; align-items: center; gap: 26px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.logo-mark {
  width: 30px; height: 30px; flex: 0 0 30px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand), var(--violet));
  color: #fff; font-size: 12px; font-weight: 800; letter-spacing: .04em;
  box-shadow: 0 4px 12px rgba(51, 85, 255, .28);
}
.brand-text { font-size: 15px; }
.badge {
  font-size: 10px; font-weight: 700; letter-spacing: .08em;
  color: var(--brand-ink); background: var(--brand-soft);
  border: 1px solid #dfe4ff; border-radius: 999px; padding: 2px 7px;
}
.nav { min-width: 0; }
.nav ul { display: flex; align-items: center; gap: 20px; margin: 0; padding: 0; list-style: none; }
.nav li { position: relative; }
.nav a { display: inline-block; font-size: 14px; color: var(--ink-2); padding: 4px 0; }
.nav a:hover { color: var(--brand); }
.nav .sub-menu, .nav ul ul {
  position: absolute; left: -12px; top: 100%; min-width: 170px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 8px; display: none; flex-direction: column; gap: 2px;
}
.nav li:hover > ul { display: flex; }
.nav ul ul a { padding: 7px 10px; border-radius: 7px; display: block; }
.nav ul ul a:hover { background: var(--bg-soft); }
.srch { margin-left: auto; }
.srch input {
  width: 200px; padding: 8px 12px; font-size: 13px; color: var(--ink);
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 9px;
  outline: none; transition: border-color .15s, background .15s, width .2s;
}
.srch input:focus { border-color: #b9c2ff; background: #fff; width: 240px; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 380px at 12% -10%, rgba(51, 85, 255, .13), transparent 62%),
    radial-gradient(700px 360px at 92% 0%, rgba(124, 58, 237, .11), transparent 60%),
    linear-gradient(180deg, #fbfcff 0%, #fff 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(to right, rgba(16, 24, 40, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 24, 40, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}
.hero-in { position: relative; max-width: 860px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  margin: 0 0 18px; padding: 5px 12px;
  font-size: 12px; font-weight: 600; letter-spacing: .04em;
  color: var(--brand-ink); background: #fff;
  border: 1px solid #dfe4ff; border-radius: 999px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px rgba(15, 157, 88, .14); }
.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 5.4vw, 58px);
  line-height: 1.14; letter-spacing: -.035em; font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--brand) 8%, var(--violet) 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { max-width: 680px; margin: 0 0 28px; font-size: 17px; color: var(--muted); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 46px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px; font-size: 14px; font-weight: 600;
  border: 1px solid transparent; transition: transform .15s, box-shadow .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--brand), #4f46e5); box-shadow: 0 8px 20px rgba(51, 85, 255, .28); }
.btn-primary:hover { box-shadow: 0 10px 26px rgba(51, 85, 255, .36); }
.btn-ghost { color: var(--ink-2); background: #fff; border-color: var(--line-2); }
.btn-ghost:hover { border-color: #b9c2ff; color: var(--brand-ink); }
.btn-light { color: var(--brand-ink); background: #fff; }

.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin: 0; }
.stats > div { padding-left: 14px; border-left: 2px solid var(--line); }
.stats dt { font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.stats dd { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }

/* ---------- 通用区块 ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 720px; margin-bottom: 32px; }
.sec-head h2 { margin: 0 0 8px; font-size: 28px; letter-spacing: -.02em; }
.sec-head p { margin: 0; color: var(--muted); font-size: 15px; }

.routes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.route {
  position: relative; display: block; padding: 26px 26px 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.route:hover { border-color: #c3ccff; box-shadow: var(--shadow); transform: translateY(-2px); }
.route-no { font-family: var(--mono); font-size: 12px; color: var(--brand); letter-spacing: .1em; }
.route h3 { margin: 10px 0 8px; font-size: 20px; }
.route p { margin: 0 0 16px; color: var(--muted); font-size: 14.5px; }
.route .more { font-size: 13.5px; font-weight: 600; color: var(--brand-ink); }

.feats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feat {
  padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
}
.feat .ico {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand-ink); font-size: 15px; font-weight: 700;
  margin-bottom: 12px;
}
.feat h3 { margin: 0 0 6px; font-size: 15.5px; }
.feat p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* ---------- 文章卡片 ---------- */
.post-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.post-card {
  display: flex; flex-direction: column; padding: 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.post-card:hover { border-color: #c3ccff; box-shadow: var(--shadow); transform: translateY(-2px); }
.card-top { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 12px; color: var(--muted); }
.card-top time { margin-left: auto; font-family: var(--mono); font-size: 11.5px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 600; color: var(--brand-ink);
  background: var(--brand-soft); border-radius: 999px; padding: 3px 9px;
}
.chip a { color: inherit; }
.post-card h2 { margin: 0 0 8px; font-size: 18px; line-height: 1.45; letter-spacing: -.01em; }
.post-card h2 a:hover { color: var(--brand-ink); }
.post-card .excerpt { margin: 0 0 18px; font-size: 14px; color: var(--muted); flex: 1; }
.card-foot { display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; color: var(--muted); }
.card-foot .read { font-weight: 600; color: var(--brand-ink); }

.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; font-size: 14px; }
.pager a { padding: 8px 14px; border: 1px solid var(--line-2); border-radius: 9px; }
.pager a:hover { border-color: #b9c2ff; color: var(--brand-ink); }
.pageinfo { margin: 16px 0 0; font-size: 12.5px; color: var(--muted); }

/* ---------- 列表页页头 ---------- */
.page-head { padding: 56px 0 30px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #fbfcff, #fff); }
.page-head h1 { margin: 6px 0 8px; font-size: 34px; letter-spacing: -.03em; }
.page-head .page-sub { margin: 0; color: var(--muted); font-size: 14px; }
.page-head .eyebrow { margin-bottom: 10px; }

/* ---------- 单页 ---------- */
.article-wrap { padding: 48px 0 72px; }
.article { max-width: 760px; margin: 0 auto; }
.article .crumbs { font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.article .crumbs a:hover { color: var(--brand-ink); }
.article h1.post-title { margin: 0 0 14px; font-size: clamp(30px, 4vw, 42px); line-height: 1.22; letter-spacing: -.03em; }
.article .post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.article .post-meta a:hover { color: var(--brand-ink); }
.article .post-meta .sep { color: var(--line-2); }

.content { padding-top: 28px; font-size: 16.5px; color: #1d2939; }
.content > *:first-child { margin-top: 0; }
.content h2 { margin: 44px 0 14px; font-size: 26px; letter-spacing: -.02em; line-height: 1.3; }
.content h3 { margin: 32px 0 10px; font-size: 20px; letter-spacing: -.01em; }
.content h4 { margin: 26px 0 8px; font-size: 17px; }
.content p { margin: 0 0 18px; }
.content ul, .content ol { margin: 0 0 18px; padding-left: 22px; }
.content li { margin: 6px 0; }
.content li > ul, .content li > ol { margin: 6px 0 0; }
.content a { color: var(--brand-ink); text-decoration: underline; text-decoration-color: #c3ccff; text-underline-offset: 3px; }
.content a:hover { text-decoration-color: var(--brand); }
.content strong { font-weight: 700; }
.content blockquote {
  margin: 22px 0; padding: 14px 20px; color: var(--ink-2);
  background: var(--bg-soft); border-left: 3px solid #b9c2ff; border-radius: 0 10px 10px 0;
}
.content blockquote p:last-child { margin-bottom: 0; }
.content hr { margin: 36px 0; border: 0; border-top: 1px solid var(--line); }
.content img { display: block; margin: 24px auto; border-radius: 10px; border: 1px solid var(--line); }
.content code {
  font-size: .88em; padding: 2px 6px; border-radius: 5px;
  background: #f2f4f8; border: 1px solid #e7eaf1; color: #b42318;
}
.content pre {
  margin: 22px 0; padding: 18px 20px; overflow: auto;
  background: #f6f8fa; color: #1f2328;
  border: 1px solid var(--line); border-radius: 12px;
  font-size: 13.5px; line-height: 1.65;
}
.content pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.content table { width: 100%; margin: 22px 0; border-collapse: collapse; font-size: 14px; }
.content th, .content td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.content th { background: var(--bg-soft); font-weight: 600; }
.content tbody tr:nth-child(even) { background: #fcfdff; }
.content .anchor { display: none; }

.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 34px 0 0; padding-top: 22px; border-top: 1px solid var(--line); }
.post-tags a {
  font-size: 12px; color: var(--muted); background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px;
}
.post-tags a:hover { color: var(--brand-ink); border-color: #c3ccff; }

.prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 760px; margin: 34px auto 0; }
.prevnext a {
  display: block; padding: 14px 16px; font-size: 13.5px; color: var(--ink-2);
  background: #fff; border: 1px solid var(--line); border-radius: 11px;
}
.prevnext a:hover { border-color: #c3ccff; color: var(--brand-ink); }
.prevnext .next { text-align: right; }

/* ---------- 评论 ---------- */
.comments { max-width: 760px; margin: 48px auto 0; padding-top: 30px; border-top: 1px solid var(--line); }
.comments-title, .comment-reply-title { font-size: 18px; margin: 0 0 16px; }
.commentlist, .commentlist ul { list-style: none; margin: 0; padding: 0; }
.commentlist .children { margin: 12px 0 0 26px; padding-left: 14px; border-left: 1px solid var(--line); }
.comment-inner { padding: 14px 0; border-bottom: 1px solid var(--line); }
.comment-author { display: flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 600; }
.comment-author .avatar { border-radius: 50%; }
.comment-author .url { color: var(--ink); }
.comment-meta { margin: 4px 0 8px; font-size: 12px; color: var(--muted); }
.comment-body { font-size: 14.5px; color: var(--ink-2); }
.comment-body p:last-child { margin-bottom: 0; }
.reply { margin-top: 6px; font-size: 12.5px; }
.reply a { color: var(--brand-ink); }
.comment-respond { margin-top: 30px; }
.comment-form p { margin: 0 0 14px; }
.comment-form label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 5px; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea {
  width: 100%; padding: 10px 12px; font: inherit; font-size: 14px;
  border: 1px solid var(--line-2); border-radius: 9px; background: #fff; outline: none;
}
.comment-form input:focus, .comment-form textarea:focus { border-color: #b9c2ff; box-shadow: 0 0 0 3px rgba(51, 85, 255, .1); }
.comment-form .submit {
  padding: 10px 20px; font-size: 14px; font-weight: 600; color: #fff;
  background: var(--brand); border: 0; border-radius: 9px; cursor: pointer;
}
.comment-form .submit:hover { background: var(--brand-ink); }
.comment-notes { font-size: 12.5px; color: var(--muted); }
.required { color: #d92d20; }

/* ---------- CTA 横幅 / 页脚 ---------- */
.band { padding: 0 0 72px; }
.band-in {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 34px 36px; border-radius: 18px;
  background: linear-gradient(120deg, #101828, #1d2a54 58%, #2f2a6b);
  color: #fff;
}
.band h2 { margin: 0 0 6px; font-size: 22px; letter-spacing: -.02em; }
.band p { margin: 0; font-size: 14px; color: rgba(255, 255, 255, .72); }

.foot { border-top: 1px solid var(--line); background: #fbfcfe; padding: 48px 0 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 28px; padding-bottom: 36px; }
.foot-brand strong { display: block; margin: 10px 0 6px; font-size: 14px; }
.foot-brand p { margin: 0; font-size: 12.5px; color: var(--muted); max-width: 260px; }
.foot h4 { margin: 0 0 12px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 7px 0; font-size: 13px; color: var(--ink-2); }
.foot li a:hover { color: var(--brand-ink); }
.foot .social li { display: inline-block; margin-right: 12px; }
.foot-bar { border-top: 1px solid var(--line); padding: 18px 0 24px; font-size: 12px; color: var(--muted); }
.foot-bar a { color: var(--ink-2); }
.foot-bar a:hover { color: var(--brand-ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .feats { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 16px 18px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .shell { padding: 0 18px; }
  .topbar-in { height: auto; min-height: 60px; flex-wrap: wrap; gap: 10px 18px; padding-top: 10px; padding-bottom: 10px; }
  .nav { order: 3; width: 100%; overflow-x: auto; }
  .nav ul { gap: 16px; white-space: nowrap; }
  .srch { margin-left: auto; }
  .srch input, .srch input:focus { width: 140px; }
  .hero { padding: 56px 0 44px; }
  .hero h1 { font-size: 34px; }
  .lede { font-size: 15.5px; }
  .section { padding: 46px 0; }
  .routes, .post-grid, .feats { grid-template-columns: 1fr; }
  .band-in { flex-direction: column; align-items: flex-start; padding: 26px; }
  .prevnext { grid-template-columns: 1fr; }
  .prevnext .next { text-align: left; }
  .content { font-size: 16px; }
}