:root {
  --accent: #ff6a3d;
  --accent2: #ff8f66;
  --bg: #faf7f3;
  --card: #fff;
  --soft: #faf9f7;
  --text: #2b2320;
  --muted: #756a63; /* 浅底次要文字 ≥4.5:1（WCAG AA），旧值 #8a7f78 仅 3.7:1 */
  --line: #eee4dc;
  --radius: 14px;
  --ok: #2e9e5b;
  --err: #d0453a;
  --purple: #8b3dd9;
  --header-bg: rgba(250, 247, 243, .92);
  --accent-soft: #fff7f2;
  --accent-border: #ffd9c2;
  --chip-bg: #f3ede6;
  --ph-a: #fff1e8;
  --ph-b: #fde8dd;
  color-scheme: light;
}
/* 深色模式：header.ejs 头部脚本按 localStorage / 系统偏好设置 html[data-theme] */
html[data-theme="dark"] {
  --bg: #191512;
  --card: #221d18;
  --soft: #1e1915;
  --text: #f0e8e0;
  --muted: #a5988e;
  --line: #37302a;
  --ok: #58cd8f;
  --err: #ef7b70;
  --purple: #c993f5;
  --header-bg: rgba(24, 20, 16, .88);
  --accent-soft: rgba(255, 106, 61, .12);
  --accent-border: #56352a;
  --chip-bg: #322a24;
  --ph-a: #3a2b21;
  --ph-b: #2b2018;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  /* 中文标点比例排布（字体不支持时忽略）；数字等宽，价格/浏览量/页码纵向对齐 */
  font-feature-settings: "palt" 1;
  font-variant-numeric: tabular-nums;
}
/* 标题字重层次：h1 最重，h2 次之 */
h1 { font-weight: 800; }
h2 { font-weight: 700; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* 页头 */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 12px; flex-wrap: wrap; padding-top: 6px; padding-bottom: 6px; }
.brand { font-weight: 700; font-size: 18px; display: flex; gap: 8px; align-items: center; }
.logo { width: 30px; height: auto; display: block; }
.nav { display: flex; align-items: center; gap: 16px; font-size: 14px; flex-wrap: wrap; }
.nav .link { background: none; border: 0; color: inherit; cursor: pointer; font-size: 14px; padding: 0; font-family: inherit; }
.inline { display: inline; }
.lang-switch a { color: var(--muted); }
.lang-switch a.on { color: var(--accent); font-weight: 700; }
.member-chip { background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; border-radius: 6px; padding: 1px 7px; }
.theme-toggle { background: none; border: 0; cursor: pointer; font-size: 15px; line-height: 1; padding: 2px; color: inherit; }

/* 移动端抽屉导航（≤700px 时 .nav 收进右侧滑出抽屉） */
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 22px; line-height: 1; color: var(--text); padding: 4px 6px; }
.nav-backdrop { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, .45); z-index: 110; }

.btn {
  display: inline-block; background: var(--accent); color: #fff; border: 0;
  border-radius: 10px; padding: 9px 18px; font-size: 14px; cursor: pointer; font-weight: 600; font-family: inherit;
  transition: background .15s ease, transform .06s ease;
}
.btn:hover { background: var(--accent2); }
.btn:active { transform: translateY(1px); }
.btn.small { padding: 5px 12px; font-size: 13px; }
.btn.ghost { background: var(--card); color: var(--accent); border: 1px solid var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }

main.container { padding-top: 28px; padding-bottom: 48px; min-height: calc(100vh - 230px); }

/* 首页 */
.hero {
  text-align: center; padding: 46px 24px 38px; margin-bottom: 26px;
  border: 1px solid var(--line); border-radius: 20px;
  background:
    radial-gradient(60% 90% at 85% 0%, rgba(255, 106, 61, .12), transparent 60%),
    radial-gradient(50% 80% at 10% 100%, rgba(139, 61, 217, .08), transparent 60%),
    linear-gradient(180deg, var(--accent-soft), var(--card) 85%);
}
.hero h1 { font-size: 34px; margin: 0 0 10px; }
.hero p { color: var(--muted); margin: 0 auto 16px; max-width: 640px; }
.hero .btn { margin-top: 18px; }
.hero-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.hero-badges span {
  background: var(--card); border: 1px solid var(--line); border-radius: 99px;
  padding: 4px 14px; font-size: 13px; color: var(--muted);
}

/* 公告条（后台「公告管理」维护；×关闭后同版本不再弹出，见 index.ejs 内联脚本） */
.announce {
  display: flex; align-items: flex-start; gap: 10px;
  max-width: 720px; margin: -10px auto 26px; padding: 10px 14px;
  background: var(--card); border: 1px solid var(--accent-border); border-radius: 12px;
  font-size: 14px; line-height: 1.55;
}
.announce-ico { flex: none; }
.announce-body { flex: 1; white-space: pre-line; word-break: break-word; color: var(--text); }
.announce-x {
  flex: none; border: 0; background: none; cursor: pointer;
  color: var(--muted); font-size: 18px; line-height: 1.2; padding: 0 2px;
}
.announce-x:hover { color: var(--text); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: flex; gap: 14px; transition: .15s;
}
.card:hover {
  transform: translateY(-3px); border-color: rgba(255, 106, 61, .45);
  box-shadow: 0 12px 28px rgba(255, 106, 61, .13), 0 4px 10px rgba(0, 0, 0, .05);
}
.card-icon {
  width: 52px; height: 52px; flex: none; display: flex; align-items: center; justify-content: center;
  font-size: 27px; line-height: 1.2; background: linear-gradient(135deg, var(--ph-a), var(--ph-b)); border-radius: 13px;
  transition: transform .2s ease;
}
.card:hover .card-icon { transform: scale(1.07); }
/* 带封面预览图的卡片：改为上下结构，封面 16:9 置顶，hover 时图片轻微放大 */
.card.with-cover { flex-direction: column; gap: 0; padding: 0; overflow: hidden; }
.card-cover {
  aspect-ratio: 16 / 9; overflow: hidden;
  background: linear-gradient(135deg, var(--ph-a), var(--ph-b));
}
.card-cover img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .3s ease;
}
.card.with-cover:hover .card-cover img { transform: scale(1.04); }
.card.with-cover .card-body { padding: 14px 16px 16px; }
/* 封面卡片标题前的小图标（取代左侧大图标位） */
.card-icon-s { display: inline-flex; vertical-align: -3px; margin-right: 6px; color: var(--accent); }
.card-icon-s .ti { width: 18px; height: 18px; }
/* SVG 工具图标（sprite 引用），未映射的工具回退显示 emoji（继承容器字号） */
.ti { display: block; color: var(--accent); }
.card-icon .ti { width: 28px; height: 28px; }
.tool-icon .ti { width: 38px; height: 38px; }
.ref-icon .ti { width: 30px; height: 30px; }
.card-body h3 { margin: 0 0 6px; font-size: 16px; }
.card-body p {
  margin: 0 0 10px; color: var(--muted); font-size: 13px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--muted); }
.feat { color: #f5a623; }
/* 卡片「输入 → 输出」短标注 + 本地/服务端处理标签（与 badge 行同色系，弱化不抢焦点） */
.card-io { font-size: 12px; color: var(--muted); margin-top: 6px; overflow-wrap: anywhere; }
.card-io .io-tag { padding: 1px 8px; border-radius: 99px; background: rgba(139, 61, 217, .12); color: var(--purple); white-space: nowrap; }
.card-io .io-tag.local { background: rgba(46, 158, 91, .12); color: var(--ok); }

.badge { padding: 2px 10px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.badge.free { background: rgba(46, 158, 91, .14); color: var(--ok); }
.badge.member { background: rgba(255, 106, 61, .14); color: var(--accent); }
.badge.paid { background: rgba(139, 61, 217, .14); color: var(--purple); }
.badge.soon { background: rgba(138, 133, 128, .16); color: var(--muted); }

/* 套餐 */
.plans { margin-top: 44px; }
.plans h2 { text-align: center; }
.plan-sub { text-align: center; font-size: 16px; margin: 30px 0 14px; }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; max-width: 760px; margin: 0 auto; }
.plan {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  text-align: center; padding: 22px; display: flex; flex-direction: column;
}
.plan.hot { border-color: var(--accent); box-shadow: 0 10px 28px rgba(255, 106, 61, .16); }
.plan-hot {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; white-space: nowrap;
  padding: 2px 12px; border-radius: 99px; box-shadow: 0 4px 10px rgba(255, 106, 61, .35);
}
.plan-name { font-weight: 700; }
.plan-price { font-size: 30px; font-weight: 800; color: var(--accent); margin: 8px 0; }
/* 新人首月特惠：划线原价 + 角标 */
.plan-price-was { font-size: 14px; font-weight: 600; color: var(--muted); margin-right: 6px; }
.plan-first-tag { display: inline-block; font-size: 11px; font-weight: 700; color: var(--accent); border: 1px solid var(--accent); border-radius: 99px; padding: 1px 10px; margin: -4px 0 6px; }
.plan-days { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.plan-perks { list-style: none; margin: 0 0 16px; padding: 0; font-size: 13px; color: var(--muted); text-align: left; flex: 1; }
.plan-perks li { padding: 3px 0; }
.plan-perks li::before { content: '✓'; color: var(--ok); font-weight: 700; margin-right: 8px; }
/* 套餐价格锚点：折合每月（会员套餐，天数 ≥30 才显示） */
.plan-per-month { font-size: 12px; font-weight: 700; color: var(--ok); margin: -4px 0 8px; }
.plan form, .plan > .btn { width: 100%; }
.plan form .btn { width: 100%; }

/* 表单 / 提示 */
.form { max-width: 400px; margin: 40px auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.form h2 { margin-top: 0; }
.form label { display: block; font-size: 13px; margin: 12px 0 4px; color: var(--muted); }
.form input, .form select, .form textarea, .admin-section input, .admin-section select, .admin-section textarea {
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; font-size: 14px; font-family: inherit; background: var(--card); color: var(--text);
}
.flash { margin: 0 0 16px; padding: 10px 14px; border-radius: 10px; font-size: 14px; }
.flash.ok { background: rgba(46, 158, 91, .14); color: var(--ok); }
.flash.err { background: rgba(208, 69, 58, .13); color: var(--err); }

/* 表格 */
.table { width: 100%; border-collapse: collapse; background: var(--card); font-size: 13px; }
.table th, .table td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.table th { color: var(--muted); font-weight: 600; }

/* 详情页 */
.tool-page { max-width: 860px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
/* 使用步骤（生成器类工具） */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0; }
.step { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 13px 14px; font-size: 13px; }
.step b { display: flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 600; }
.step-num {
  width: 22px; height: 22px; flex: none; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 12px;
  display: inline-flex; align-items: center; justify-content: center;
}
.tool-head { display: flex; gap: 16px; align-items: center; }
.tool-icon {
  width: 68px; height: 68px; flex: none; display: flex; align-items: center; justify-content: center;
  font-size: 36px; background: linear-gradient(135deg, var(--ph-a), var(--ph-b)); border-radius: 16px;
}
.tool-cover { width: 100%; height: auto; display: block; border-radius: 12px; margin: 16px 0 4px; border: 1px solid var(--line); }
.muted { color: var(--muted); }
.meta-row { display: flex; gap: 12px; align-items: center; margin: 8px 0 0; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.gate { background: var(--accent-soft); border: 1px solid var(--accent-border); border-radius: 12px; padding: 14px 16px; margin: 16px 0; }
/* 详情页信息块：输入输出 / 费用规则 / 隐私（生成器的说明书入口） */
.tool-facts { background: var(--chip-bg, #f6f1ea); border: 1px solid var(--line, #eee4dc); border-radius: 12px; padding: 12px 16px; margin: 14px 0; font-size: 14px; display: grid; gap: 6px; }
.tool-facts b { margin-right: 6px; }

/* 页脚：品牌区（站名 + tagline）+ 三栏（工具 / 文章 / 关于）+ 底部条 */
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 22px; margin-top: 40px; font-size: 13px; color: var(--muted); }
.footer-cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 10px 24px; }
.footer-col { display: flex; flex-direction: column; gap: 7px; }
.footer-col b { color: var(--text); }
.footer-col a { width: fit-content; }
.footer-col a:hover { color: var(--accent); }
.footer-brand { gap: 9px; }
.footer-brand-name { font-weight: 700; font-size: 16px; display: flex; gap: 8px; align-items: center; color: var(--text); }
.footer-brand-name .logo { width: 24px; }
.footer-tagline { margin: 0; max-width: 36ch; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
.footer-links a { margin-left: 14px; }
/* 相关项目行：横排换行，与底部分隔 */
.footer-friends { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: baseline; margin-top: 14px; }
.footer-friends b { color: var(--text); }
.footer-friends a:hover { color: var(--accent); }

/* 弹窗 */
.modal { position: fixed; inset: 0; background: rgba(0, 0, 0, .45); display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal.open { display: flex; }
.modal-box { background: var(--card); border-radius: 16px; padding: 24px 28px; text-align: center; max-width: 320px; position: relative; }
.modal-close { position: absolute; right: 10px; top: 8px; border: 0; background: none; font-size: 20px; cursor: pointer; color: var(--muted); }
.qr { width: 200px; height: 200px; border-radius: 10px; }

/* 反馈弹窗（左对齐表单） */
.modal-box.form-box { text-align: left; max-width: 400px; width: 100%; }
.modal-box.form-box h3 { margin: 0 0 12px; font-size: 17px; }
.form-box select, .form-box textarea, .form-box input {
  width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14px; font-family: inherit; background: var(--card); color: var(--text); margin-bottom: 10px;
}
.form-box textarea { resize: vertical; }
.fb-actions { display: flex; align-items: center; gap: 12px; }
.fb-actions .muted { font-size: 12px; }

/* AI 客服挂件 */
.chat-fab {
  position: fixed; right: 22px; bottom: 22px; width: 54px; height: 54px; border-radius: 50%;
  border: 0; background: var(--accent); color: #fff; font-size: 24px; cursor: pointer;
  box-shadow: 0 8px 20px rgba(255, 106, 61, .4); z-index: 90;
}
.chat-panel {
  position: fixed; right: 22px; bottom: 88px; width: 320px; max-width: calc(100vw - 44px); height: 420px;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; display: none; flex-direction: column;
  overflow: hidden; z-index: 95; box-shadow: 0 12px 32px rgba(0, 0, 0, .15);
}
.chat-panel.open { display: flex; }
.chat-head { background: var(--accent); color: #fff; padding: 10px 14px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.chat-head button { background: none; border: 0; color: #fff; font-size: 16px; cursor: pointer; }
.chat-body { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; background: var(--soft); }
.msg { max-width: 85%; padding: 8px 12px; border-radius: 12px; font-size: 13px; white-space: pre-wrap; }
.msg.bot { background: var(--card); border: 1px solid var(--line); align-self: flex-start; }
.msg.user { background: var(--accent); color: #fff; align-self: flex-end; }
.chat-foot { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--line); }
.chat-foot input { flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px; font-size: 13px; background: var(--card); color: var(--text); }

/* 网站聚合推广卡片 */
.ref-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
.ref-card { display: flex; gap: 12px; align-items: center; background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.ref-icon { font-size: 30px; line-height: 1.2; }
.ref-tagline { font-size: 13px; font-weight: 700; margin: 2px 0; }
.ref-bonus { display: inline-block; background: var(--accent-soft); color: var(--accent); border-radius: 8px; padding: 2px 8px; font-size: 12px; font-weight: 600; }

/* 管理后台 */
.admin-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 18px; }
.admin-tabs a { padding: 7px 16px; border-radius: 99px; border: 1px solid var(--line); background: var(--card); font-size: 14px; color: var(--muted); }
.admin-tabs a:hover { color: var(--accent); border-color: var(--accent); }
.admin-tabs a.on { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.form-fold { border: 1px solid var(--line); border-radius: 12px; background: var(--soft); margin: 0 0 16px; }
.form-fold > summary {
  cursor: pointer; padding: 10px 14px; font-weight: 600; font-size: 14px;
  list-style: none; user-select: none; color: var(--accent);
}
.form-fold > summary::-webkit-details-marker { display: none; }
.form-fold > summary::before { content: '▸'; display: inline-block; margin-right: 8px; color: var(--muted); transition: transform .15s; }
.form-fold[open] > summary::before { transform: rotate(90deg); }
.form-fold > form { padding: 14px; border-top: 1px solid var(--line); background: var(--card); border-radius: 0 0 12px 12px; }
.admin-section { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.admin-section h3 { margin-top: 0; }
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; margin: 16px 0; }
.stat { background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 12px; text-align: center; }
.stat b { font-size: 22px; display: block; }
.stat span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.inline-form label { font-size: 12px; color: var(--muted); display: block; margin-bottom: 2px; }
.inline-form input, .inline-form select { padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; }

/* 博客 */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.blog-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .15s; display: flex; flex-direction: column; }
.blog-card:hover {
  transform: translateY(-3px); border-color: rgba(255, 106, 61, .35);
  box-shadow: 0 12px 28px rgba(255, 106, 61, .1), 0 4px 10px rgba(0, 0, 0, .05);
}
.blog-cover { width: 100%; height: 150px; object-fit: cover; display: block; }
/* 无封面占位图：按文章 slug 哈希出专属色相（--hue），大图标 + 标题压字，看起来像设计过的封面 */
.blog-cover-ph {
  position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden;
  background: linear-gradient(135deg, hsl(var(--hue, 20) 70% 92%), hsl(calc(var(--hue, 20) + 24) 62% 85%));
}
html[data-theme="dark"] .blog-cover-ph {
  background: linear-gradient(135deg, hsl(var(--hue, 20) 42% 24%), hsl(calc(var(--hue, 20) + 24) 45% 17%));
}
.blog-cover-ph .ph-icon { font-size: 44px; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, .12)); }
.blog-cover-ph .ph-title {
  position: absolute; left: 12px; right: 12px; bottom: 8px;
  font-size: 12px; font-weight: 700; text-align: center;
  color: hsl(var(--hue, 20) 45% 30%);
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
html[data-theme="dark"] .blog-cover-ph .ph-title { color: hsl(var(--hue, 20) 60% 82%); }
.blog-body { padding: 16px 18px 14px; flex: 1; display: flex; flex-direction: column; }
.blog-body h3 { margin: 0 0 6px; font-size: 16px; }
.blog-body p { margin: 0 0 10px; color: var(--muted); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-meta { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--muted); flex-wrap: wrap; margin-top: auto; }
.tag-chip { background: var(--chip-bg); color: var(--muted); border-radius: 6px; padding: 1px 8px; font-size: 11px; }
.post-page h1 { font-size: 26px; margin: 0 0 6px; }
.post-cover { width: 100%; border-radius: 12px; margin: 14px 0 4px; }
.post-content { margin-top: 14px; font-size: 15px; overflow-wrap: break-word; }
.post-content h2 { font-size: 20px; margin: 26px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
.post-content h3 { font-size: 17px; margin: 20px 0 8px; }
.post-content p { margin: 10px 0; }
.post-content a { color: var(--accent); }
.post-content ul, .post-content ol { padding-left: 24px; margin: 10px 0; }
.post-content img { max-width: 100%; border-radius: 10px; }
.post-content blockquote { margin: 12px 0; padding: 8px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; color: var(--muted); }
.post-content code { background: var(--chip-bg); border-radius: 5px; padding: 1px 6px; font-size: 13px; }
.post-content pre { background: #2b2320; color: #f5efe9; border-radius: 10px; padding: 14px 16px; overflow-x: auto; }
.post-content pre code { background: none; color: inherit; padding: 0; }
.post-content hr { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }
.home-posts { margin-top: 40px; }
.home-posts h2 { text-align: center; margin-bottom: 18px; }
.md-toolbar { display: flex; gap: 10px; align-items: center; margin: 4px 0 6px; }
.cover-preview { display: block; width: 160px; height: 90px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); margin-top: 8px; }
.related-tools { max-width: 1080px; margin: 28px auto 0; padding: 0 20px; }
.related-tools h2 { font-size: 20px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 26px; }
  .hero { padding: 32px 16px 26px; }
  .tool-page, .form { padding: 20px; }
  .steps { grid-template-columns: 1fr; }
}

/* 页脚：品牌区通栏，栏目两列 */
@media (max-width: 700px) {
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* 移动端抽屉导航 */
@media (max-width: 700px) {
  .nav-toggle { display: inline-flex; }
  .header-inner { flex-wrap: nowrap; }
  .nav {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 120;
    width: min(78vw, 300px); margin: 0; padding: 26px 24px; gap: 18px;
    flex-direction: column; align-items: flex-start; flex-wrap: nowrap;
    background: var(--card); border-left: 1px solid var(--line);
    transform: translateX(105%); transition: transform .22s ease; overflow-y: auto;
    box-shadow: -14px 0 36px rgba(0, 0, 0, .22);
  }
  .nav.open { transform: none; }
  .nav-backdrop.show { display: block; }
  .nav-search { width: 100%; }
  .nav-search input { flex: 1; width: auto; max-width: none; }
}

/* 博客标签筛选 + 分页 */
.tag-filter { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 20px; }
.tag-filter .label { font-size: 13px; color: var(--muted); margin-right: 2px; }
.tag-filter .tag-chip { padding: 3px 12px; font-size: 12px; border: 1px solid transparent; }
a.tag-chip:hover { color: var(--accent); background: var(--accent-soft); text-decoration: none; }
button.tag-chip { cursor: pointer; font-family: inherit; border: 1px solid transparent; }
button.tag-chip:hover { color: var(--accent); background: var(--accent-soft); }
.tag-filter .tag-chip.on { background: var(--accent); color: #fff; }
.tag-chip i { font-style: normal; opacity: .65; margin-left: 3px; font-size: 10px; }
.cat-filter { margin: 0 0 18px; }
.pager { display: flex; justify-content: center; align-items: center; gap: 6px; flex-wrap: wrap; margin: 28px 0 6px; }
.pager a, .pager .cur, .pager .dots {
  min-width: 34px; padding: 5px 10px; text-align: center; font-size: 13px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--text);
}
.pager a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.pager .cur { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
.pager .dots { border-color: transparent; background: none; color: var(--muted); }

/* 后台总览：浏览趋势图 + 按日条形 */
.trend { display: flex; align-items: stretch; gap: 2px; margin-top: 14px; }
.trend-col { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; }
.trend-slot { height: 150px; display: flex; align-items: flex-end; }
.trend-bar { width: 100%; background: linear-gradient(180deg, var(--accent2), var(--accent)); border-radius: 3px 3px 0 0; }
.trend-col:hover .trend-bar { background: #e0552a; }
.trend-label { font-size: 10px; color: var(--muted); text-align: center; padding-top: 4px; white-space: nowrap; }
.daily-bar { background: var(--chip-bg); border-radius: 6px; height: 8px; overflow: hidden; }
.daily-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent2), var(--accent)); border-radius: 6px; }

/* 站内搜索 */
.nav-search { display: flex; align-items: center; gap: 4px; }
.nav-search input {
  width: 130px; max-width: 32vw; padding: 5px 12px; font-size: 13px; font-family: inherit;
  border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--text);
}
.nav-search input:focus { outline: none; border-color: var(--accent); width: 180px; }
.nav-search button { border: 0; background: none; cursor: pointer; font-size: 14px; padding: 2px; }
.search-box { margin-bottom: 6px; }
.search-big { display: flex; gap: 10px; }
.search-big input {
  flex: 1; padding: 10px 16px; font-size: 15px; font-family: inherit;
  border: 1px solid var(--line); border-radius: 12px; background: var(--card); color: var(--text);
}
.search-big input:focus { outline: none; border-color: var(--accent); }
.search-section { margin-top: 30px; }
.search-section h2 { font-size: 20px; margin: 0 0 14px; }
mark { background: var(--accent-border); color: inherit; border-radius: 3px; padding: 0 1px; }
html[data-theme="dark"] mark { background: rgba(255, 106, 61, .38); }

/* 无障碍：键盘焦点可见（搜索框 focus 态用边框色替代 outline，仅对鼠标用户隐藏 outline 的 input 不受影响） */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* 动效降级：前庭敏感用户关掉过渡/动画 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}