/*
Theme Name: Aurora 极光
Theme URI: https://example.com/aurora
Author: 秋风扫落叶
Author URI: https://example.com
Description: 一款大气、美观的现代 WordPress 博客主题。深空渐变 Hero、玻璃拟态导航、卡片式文章流、明暗双模式、阅读进度条、平滑滚动动画，零第三方依赖，性能优先。
Version: 1.3.5
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: aurora
Tags: blog, two-columns, custom-menu, featured-images, translation-ready, dark-mode
*/

/* ============================================================
   1. 设计变量 & 基础重置
   ============================================================ */
:root {
  --bg: #f6f8fb;
  --bg-soft: #ffffff;
  --surface: rgba(255, 255, 255, .72);
  --border: rgba(15, 23, 42, .08);
  --text: #0f172a;
  --muted: #64748b;
  --primary: #6366f1;
  --primary-strong: #4f46e5;
  --accent: #22d3ee;
  --shadow-sm: 0 1px 2px rgba(2, 6, 23, .05);
  --shadow-md: 0 12px 32px -12px rgba(2, 6, 23, .18);
  --radius-lg: 20px;
  --radius-md: 14px;
  --header-h: 76px;
  /* 页脚夜空配色：亮色模式下也用深色收尾，与顶部 Hero 首尾呼应 */
  --footer-bg-1: #101a35;
  --footer-bg-2: #0b1023;
  --footer-text: #e2e8f0;
  --footer-muted: rgba(148, 163, 184, .88);
}

html[data-theme="dark"] {
  --bg: #0b1120;
  --bg-soft: #101a30;
  --surface: rgba(16, 26, 48, .66);
  --border: rgba(148, 163, 184, .14);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --shadow-md: 0 18px 40px -16px rgba(0, 0, 0, .55);
  /* 暗色模式：页脚再压深一档，拉开层次 */
  --footer-bg-1: #0d142a;
  --footer-bg-2: #070b18;
  --footer-muted: rgba(148, 163, 184, .75);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 500px at 85% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.75;
  letter-spacing: .01em;
  transition: background-color .35s ease, color .35s ease;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--primary); }

::selection { background: color-mix(in srgb, var(--primary) 28%, transparent); }

.wrap {
  width: min(1180px, 92%);
  margin-inline: auto;
}

.screen-reader-text {
  position: absolute !important;
  clip: rect(1px, 1px, 1px, 1px);
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 10000;
  padding: 10px 18px;
  background: var(--primary);
  border-radius: 10px;
  color: #fff;
}

body.rtl { direction: rtl; }
.sticky { position: relative; }
.wp-caption { max-width: 100%; }
.wp-caption-text { text-align: center; font-size: 13px; color: var(--muted); }
.alignleft { float: left; margin: 0 24px 16px 0; }
.alignright { float: right; margin: 0 0 16px 24px; }
.aligncenter { display: block; margin: 0 auto; }
.gallery-caption {}
.bypostauthor {}

/* ============================================================
   2. 阅读进度条
   ============================================================ */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  z-index: 9999;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  box-shadow: 0 0 12px color-mix(in srgb, var(--primary) 60%, transparent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* ============================================================
   3. 站点头部（玻璃拟态）
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--surface);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }

.custom-logo { width: 40px; height: 40px; object-fit: contain; border-radius: 10px; }

.site-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.site-title a {
  background: linear-gradient(90deg, var(--text), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.site-title a:hover { filter: brightness(1.08); }
.site-description { margin: 0; font-size: 12px; color: var(--muted); }

.header-actions { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  cursor: pointer;
  font-size: 17px;
  line-height: 1;
  transition: transform .3s ease, box-shadow .3s ease;
}
.theme-toggle:hover { transform: rotate(18deg) scale(1.06); box-shadow: var(--shadow-md); }

.main-nav ul { list-style: none; display: flex; gap: 6px; margin: 0; padding: 0; }
.main-nav li { position: relative; }
.main-nav a {
  display: inline-block;
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  color: var(--muted);
}
.main-nav a:hover,
.main-nav .current-menu-item > a,
.main-nav .current_page_item > a { color: var(--primary); background: color-mix(in srgb, var(--primary) 10%, transparent); }

.nav-toggle { display: none; }

/* ============================================================
   4. Hero 深空横幅
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(90px, 13vw, 150px) 0 clamp(80px, 11vw, 130px);
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, #0b1023 0%, #171e3d 45%, #232a5c 75%, #2b2170 100%);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 20% 20%, rgba(99, 102, 241, .45), transparent 65%),
    radial-gradient(700px 350px at 82% 78%, rgba(34, 211, 238, .32), transparent 65%);
}
.hero::after {
  content: "";
  position: absolute; inset: auto 0 -2px 0;
  height: 140px;
  background: var(--bg);
  clip-path: ellipse(75% 100% at 50% 100%);
}
.hero-inner { position: relative; z-index: 2; }

/* 设置了首页横幅背景图时：照片铺满裁切，::before 追加深色压暗层，
   原两层极光光斑继续叠加，白字对比度不受照片亮部影响 */
.hero.has-hero-bg {
  background-size: cover;
  background-position: center;
}
.hero.has-hero-bg::before {
  background:
    radial-gradient(600px 300px at 20% 20%, rgba(99, 102, 241, .45), transparent 65%),
    radial-gradient(700px 350px at 82% 78%, rgba(34, 211, 238, .32), transparent 65%),
    linear-gradient(135deg, rgba(11, 16, 35, .87) 0%, rgba(23, 30, 61, .85) 45%, rgba(35, 42, 92, .83) 75%, rgba(43, 33, 112, .86) 100%);
}

.hero-kicker {
  display: inline-block;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .08);
  backdrop-filter: blur(8px);
  font-size: 13px;
  letter-spacing: .22em;
  text-transform: uppercase;
  margin-bottom: 26px;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: .02em;
  /* 整行一条连续渐变：冰白 → 雾蓝 → 青 → 蓝 → 紫，
     前后两部分自然衔接，不再出现纯白与彩色的割裂感 */
  background: linear-gradient(100deg, #f1f5f9 0%, #c7d2fe 30%, #67e8f9 50%, #818cf8 72%, #c084fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero h1 em {
  font-style: normal;
  background: none; /* 不再单独设色，继承父级整条渐变 */
}

.hero-sub {
  max-width: 720px;
  margin: 0 auto 36px;
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(255, 255, 255, .78);
}

.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #22d3ee);
  box-shadow: 0 12px 28px -10px rgba(56, 189, 248, .55);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 34px -10px rgba(99, 102, 241, .65); color: #fff; }
.btn-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(255, 255, 255, .06);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .14); transform: translateY(-3px); color: #fff; }

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: clamp(24px, 6vw, 64px);
  margin-top: 54px;
}
.stat b { display: block; font-size: 30px; font-weight: 900; }
.stat span { font-size: 13px; color: rgba(255, 255, 255, .65); letter-spacing: .12em; }

/* ============================================================
   5. 区块标题 & 文章网格
   ============================================================ */
.section { padding: clamp(56px, 8vw, 96px) 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 40px; }
.section-head h2 { margin: 0; font-size: clamp(26px, 3.4vw, 36px); font-weight: 900; letter-spacing: .02em; }
.section-head p { margin: 8px 0 0; color: var(--muted); }
.more-link { flex-shrink: 0; font-weight: 700; font-size: 15px; color: var(--primary); }
.more-link:hover { color: var(--primary-strong); }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-soft);
  box-shadow: var(--shadow-sm);
}
/* 入场动画：默认可见，仅当 JS 正常运行时才启用隐藏态（.js-ready），
   即使脚本加载失败或被拦截，文章也永远不会消失。 */
html.js-ready .post-card {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease, box-shadow .35s ease;
}
html.js-ready .post-card.visible { opacity: 1; transform: none; }
.post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }

.post-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 22%, var(--bg)), color-mix(in srgb, var(--accent) 22%, var(--bg)));
}
.post-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s cubic-bezier(.2, .6, .2, 1);
}
.post-card:hover .post-thumb img { transform: scale(1.07); }
.post-thumb-placeholder {
  position: absolute; inset: 0;
  display: grid;
  place-items: center;
  font-size: 44px;
  opacity: .5;
}

.card-body { display: flex; flex-direction: column; gap: 12px; padding: 24px 24px 26px; flex: 1; }
.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
}
.meta-dot::before { content: "·"; margin-right: 8px; }

.cat-pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  font-weight: 700;
  font-size: 12px;
}

.card-title { margin: 0; font-size: 21px; line-height: 1.4; }
.card-title a { display: inline; background-image: linear-gradient(var(--primary), var(--primary)); background-repeat: no-repeat; background-size: 0% 2px; background-position: 0 100%; transition: background-size .35s ease; }
.card-title a:hover { color: var(--text); background-size: 100% 2px; }

.card-excerpt { margin: 0; color: var(--muted); font-size: 15px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-foot { margin-top: auto; padding-top: 6px; font-size: 14px; font-weight: 700; color: var(--primary); }

/* ============================================================
   6. 分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 52px;
}
.pagination .page-numbers {
  min-width: 42px;
  padding: 9px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--muted);
  transition: all .25s ease;
}
.pagination .page-numbers.current,
.pagination .page-numbers:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: transparent;
  box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--primary) 70%, transparent);
}

/* ============================================================
   7. 单篇文章 & 页面
   ============================================================ */
.entry-hero { padding: clamp(48px, 7vw, 84px) 0 34px; }
.breadcrumbs { margin-bottom: 22px; font-size: 13.5px; color: var(--muted); }
.entry-hero h1 { margin: 0 0 18px; font-size: clamp(30px, 4.6vw, 50px); font-weight: 900; line-height: 1.25; }
.single-header { margin: clamp(40px, 6vw, 64px) 0 26px; }
.single-title {
  margin: 0;
  font-size: clamp(30px, 4.6vw, 50px);
  font-weight: 900;
  line-height: 1.25;
}
.entry-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 14px; }
.avatar { width: 30px; height: 30px; border-radius: 50%; vertical-align: middle; margin-right: 8px; }
.entry-cover { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); margin-bottom: 40px; }

.content-area { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; align-items: start; padding-bottom: 80px; }

.entry-content {
  font-size: 17px;
  line-height: 1.95;
  animation: rise .7s ease both;
}
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

.entry-content > * + * { margin-top: 1.15em; }
.entry-content h2, .entry-content h3, .entry-content h4 { margin: 2em 0 .8em; font-weight: 800; line-height: 1.4; scroll-margin-top: calc(var(--header-h) + 20px); }
.entry-content h2 { font-size: 27px; padding-left: 14px; border-left: 4px solid var(--primary); }
.entry-content h3 { font-size: 22px; }
.entry-content h4 { font-size: 19px; }
.entry-content p { margin: 0; }
.entry-content blockquote {
  margin: 1.6em 0;
  padding: 18px 24px;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: color-mix(in srgb, var(--primary) 6%, var(--bg-soft));
  color: var(--muted);
  font-style: italic;
}
.entry-content pre {
  overflow-x: auto;
  padding: 22px 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #0f172a;
  color: #e2e8f0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14.5px;
  line-height: 1.7;
  box-shadow: var(--shadow-md);
}
html[data-theme="dark"] .entry-content pre { background: #0b1120; }
.entry-content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; padding: .18em .45em; border-radius: 6px; background: color-mix(in srgb, var(--primary) 12%, transparent); color: var(--primary-strong); }
.entry-content pre code { padding: 0; background: none; color: inherit; font-size: inherit; }

/* 代码块复制按钮：容器负责相对定位，按钮悬浮右上角 */
.aurora-code-block { position: relative; }
.aurora-copy-btn {
  position: absolute;
  top: 10px; right: 10px;
  z-index: 5;
  padding: 5px 14px;
  border: 1px solid rgba(148, 163, 184, .3);
  border-radius: 8px;
  background: rgba(15, 23, 42, .55);
  backdrop-filter: blur(6px);
  color: #cbd5e1;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
}
.aurora-code-block:hover .aurora-copy-btn,
.aurora-copy-btn:focus-visible {
  opacity: 1;
  visibility: visible;
}
.aurora-copy-btn:hover {
  background: color-mix(in srgb, var(--primary) 30%, rgba(15, 23, 42, .55));
  color: #fff;
  border-color: transparent;
}
.aurora-copy-btn.copied {
  background: rgba(34, 197, 94, .25);
  color: #4ade80;
  border-color: rgba(74, 222, 128, .4);
  opacity: 1;
  visibility: visible;
}
/* 触屏设备没有 hover：常显按钮 */
@media (hover: none) {
  .aurora-copy-btn { opacity: 1; visibility: visible; }
}
.entry-content table { width: 100%; border-collapse: collapse; font-size: 15px; }
.entry-content th, .entry-content td { padding: 11px 14px; border: 1px solid var(--border); text-align: left; }
.entry-content thead { background: color-mix(in srgb, var(--primary) 8%, var(--bg-soft)); }
.entry-content img, .entry-content .wp-block-image img { border-radius: var(--radius-md); }
.entry-content hr { border: none; height: 1px; margin: 2.4em 0; background: var(--border); }

.page-links { margin-top: 2em; font-weight: 600; }
.tags-list { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag-link { padding: 5px 14px; border-radius: 999px; border: 1px solid var(--border); font-size: 13px; color: var(--muted); transition: all .25s ease; }
.tag-link:hover { color: #fff; background: var(--primary); border-color: transparent; }

.author-box {
  display: flex;
  gap: 20px;
  margin-top: 48px;
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-soft);
}
.author-box .avatar { width: 62px; height: 62px; border: 3px solid color-mix(in srgb, var(--primary) 30%, transparent); }
.author-box h3 { margin: 0 0 4px; font-size: 17px; }
.author-box p { margin: 0; color: var(--muted); font-size: 14.5px; }

.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; }
.post-nav div { padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-soft); transition: box-shadow .3s ease, transform .3s ease; }
.post-nav div:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.post-nav .nav-next { text-align: right; }
.post-nav span { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.post-nav a { font-weight: 700; }

/* ============================================================
   8. 侧边栏 & 组件
   ============================================================ */
.sidebar { position: sticky; top: calc(var(--header-h) + 24px); display: flex; flex-direction: column; gap: 24px; }
.widget {
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  box-shadow: var(--shadow-sm);
}
.widget-title {
  position: relative;
  margin: 0 0 18px;
  padding-bottom: 10px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .04em;
}
.widget-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.widget ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.widget li a { display: block; font-size: 14.5px; color: var(--muted); transition: transform .25s ease, color .25s ease; }
.widget li a:hover { color: var(--primary); transform: translateX(4px); }
.widget_search input[type="search"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.widget_search input[type="search"]:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 15%, transparent); }

/* ============================================================
   9. 评论
   ============================================================ */
.comments-area { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--border); }
.comments-title, .comment-reply-title { font-size: 22px; font-weight: 800; }
.comment-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 18px; }
.comment-list .children { list-style: none; margin: 18px 0 0; padding-left: 28px; display: flex; flex-direction: column; gap: 18px; }
.comment-body { padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-soft); }
.comment-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 13.5px; color: var(--muted); }
.comment-author .fn { font-weight: 700; color: var(--text); font-style: normal; }
.comment-form p { margin: 0 0 16px; }
.comment-form label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 600; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.comment-form textarea { min-height: 150px; resize: vertical; }
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 15%, transparent); }
.comment-form .submit {
  padding: 13px 34px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease;
}
.comment-form .submit:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -10px color-mix(in srgb, var(--primary) 75%, transparent); }
.no-comments { color: var(--muted); }

/* ============================================================
   10. CTA & 页脚
   ============================================================ */
.cta-band {
  position: relative;
  overflow: hidden;
  margin: 20px 0 80px;
  padding: clamp(48px, 6vw, 72px);
  border-radius: 28px;
  text-align: center;
  color: #fff;
  background: linear-gradient(120deg, #4338ca 0%, #6d28d9 50%, #0e7490 100%);
  box-shadow: var(--shadow-md);
}
.cta-band::before { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 240px at 85% 15%, rgba(255, 255, 255, .18), transparent 60%); }
.cta-band > * { position: relative; }
.cta-band h2 { margin: 0 0 12px; font-size: clamp(24px, 3.4vw, 36px); font-weight: 900; }
.cta-band p { margin: 0 0 28px; color: rgba(255, 255, 255, .82); }
.cta-band .btn { background: #fff; color: #1e1b4b; }
.cta-band .btn:hover { transform: translateY(-3px); color: #1e1b4b; box-shadow: 0 16px 32px -12px rgba(0, 0, 0, .45); }

.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: 20px;
  color: var(--footer-text);
  background:
    radial-gradient(720px 260px at 12% 0%, rgba(99, 102, 241, .28), transparent 62%),
    radial-gradient(680px 240px at 88% 8%, rgba(34, 211, 238, .18), transparent 60%),
    linear-gradient(180deg, var(--footer-bg-1) 0%, var(--footer-bg-2) 100%);
}
/* 页脚顶部的极光光缝：与 Hero 的光斑呼应 */
.site-footer::before {
  content: "";
  position: absolute;
  inset: -1px 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, #22d3ee, #6366f1, #a78bfa);
  opacity: .75;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  padding: 60px 0 40px;
}
.footer-col h4 { margin: 0 0 16px; font-size: 15px; font-weight: 800; letter-spacing: .06em; color: #fff; }
.footer-col p { margin: 0; color: var(--footer-muted); font-size: 14.5px; max-width: 420px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col li a { color: var(--footer-muted); font-size: 14.5px; transition: color .25s ease; }
.footer-col li a:hover { color: #a5b4fc; }
.footer-logo { font-weight: 800; font-size: 17px; color: #fff; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 28px;
  position: relative;
  border-top: 1px solid rgba(148, 163, 184, .18);
  color: var(--footer-muted);
  font-size: 13.5px;
}
.footer-bottom a { color: var(--footer-muted); transition: color .25s ease; }
.footer-bottom a:hover { color: #a5b4fc; }
#toTop,
.back-to-top {
  position: fixed;
  right: 26px; bottom: 30px;
  z-index: 900;
  width: 46px; height: 46px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .35s ease;
  box-shadow: 0 12px 26px -10px color-mix(in srgb, var(--primary) 80%, transparent);
}
#toTop.show, .back-to-top.visible { opacity: 1; visibility: visible; transform: none; }
#toTop:hover, .back-to-top:hover { transform: translateY(-3px); }

/* ============================================================
   10.5 单篇页面补充 & 搜索表单
   ============================================================ */
.single-wrap { padding-bottom: 30px; }
.single-thumb {
  margin: 0 0 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.single-thumb img { width: 100%; height: auto; }

.search-form { display: flex; align-items: center; gap: 10px; }
.search-field {
  flex: 1;
  min-width: 0;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.search-field:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 15%, transparent); }
.search-submit {
  border: none;
  cursor: pointer;
  padding: 12px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 15px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.search-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -10px color-mix(in srgb, var(--primary) 70%, transparent); }

.hero-search { max-width: 560px; margin: 34px auto 0; }
.hero-search .search-form {
  padding: 6px 6px 6px 22px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px;
  background: rgba(255, 255, 255, .08);
  backdrop-filter: blur(8px);
}
.hero-search .search-field { border: none; background: transparent; color: #fff; }
.hero-search .search-field:focus { border: none; box-shadow: none; }
.hero-search .search-field::placeholder { color: rgba(255, 255, 255, .55); }

/* ============================================================
   10.6 订阅区块
   ============================================================ */
.subscribe-band {
  margin: 20px 0 80px;
  padding: clamp(40px, 5vw, 60px);
  border: 1px solid var(--border);
  border-radius: 28px;
  text-align: center;
  background: color-mix(in srgb, var(--primary) 5%, var(--bg-soft));
}
.subscribe-band h3 { margin: 0 0 10px; font-size: clamp(22px, 3vw, 30px); font-weight: 900; }
.subscribe-band p { margin: 0 auto 24px; max-width: 480px; color: var(--muted); }
.subscribe-ok { color: var(--primary-strong); font-weight: 700; }
.subscribe-form { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; max-width: 520px; margin: 0 auto; }
.subscribe-form input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  padding: 14px 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.subscribe-form input[type="email"]:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 15%, transparent); }

/* ============================================================
   11. 响应式
   ============================================================ */
@media (max-width: 1080px) {
  .content-area { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; }
}

@media (max-width: 900px) {
  /* 移动端关闭顶栏毛玻璃：backdrop-filter 是滚动掉帧元凶，去掉后滑动更跟手 */
  .site-header {
    background: var(--bg-soft);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px; height: 42px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-soft);
    cursor: pointer;
  }
  .nav-toggle span { height: 2px; border-radius: 2px; background: var(--text); transition: transform .3s ease, opacity .3s ease; }
  .main-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;
    padding: 12px 4vw 20px;
    background: var(--surface);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 12px 14px; border-radius: 12px; }
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (max-width: 620px) {
  .posts-grid { grid-template-columns: 1fr; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .nav-next { text-align: left; }
  .hero-stats { gap: 20px; }
  .stat b { font-size: 22px; }
  .site-description { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding: 44px 0 30px; }
  #toTop { right: 16px; bottom: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}
/* ===== 美化覆盖样式 by Operit ===== */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

/* 整体 */
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.75;
}

/* 头部 */
.site-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow);
    position: sticky; top: 0; z-index: 100;
}
.site-header a { color: #fff !important; }
.site-title { font-weight: 700; letter-spacing: -0.5px; }
.site-description { opacity: .9; font-size: .9rem; }

/* 导航 */
.main-navigation a { transition: opacity .2s; }
.main-navigation a:hover { opacity: .8; }

/* 卡片 */
article.post, article.page, .card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem; margin-bottom: 2rem;
    border: 1px solid var(--border);
    transition: transform .25s, box-shadow .25s;
}
article.post:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* 标题 */
.entry-title, .entry-title a {
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
}
.entry-title a:hover { color: var(--primary); }

/* 元信息 */
.entry-meta { color: var(--text-muted); font-size: .85rem; }
.entry-meta a { color: var(--primary); text-decoration: none; }

/* 链接 */
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }

/* 按钮 & 更多 */
.more-link, .wp-block-button__link, button, input[type="submit"] {
    background: var(--primary) !important;
    color: #fff !important;
    border-radius: 8px; padding: .6rem 1.2rem;
    font-weight: 600; border: none;
    transition: background .2s, transform .2s;
    display: inline-block;
}
.more-link:hover, .wp-block-button__link:hover, button:hover, input[type="submit"]:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-1px);
}

/* 侧边栏 */
.widget {
    background: var(--card); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 1.5rem; margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}
.widget-title {
    font-size: 1rem; font-weight: 700; margin-bottom: 1rem;
    padding-bottom: .75rem; border-bottom: 2px solid var(--primary);
    color: var(--text);
}

/* 页脚 */
.site-footer {
    background: #1e293b; color: #94a3b8;
    padding: 2rem 0; margin-top: 3rem;
}
.site-footer a { color: #cbd5e1; }
.site-footer a:hover { color: #fff; }

/* 评论 */
.comment-body {
    background: var(--card); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 1.5rem; margin-bottom: 1rem;
    border: 1px solid var(--border);
}

/* 代码块 */
pre, code {
    background: #0f172a; color: #e2e8f0;
    border-radius: 8px; font-family: "Fira Code", Consolas, Monaco, monospace;
}
pre { padding: 1.25rem; overflow-x: auto; }
code { padding: .2em .4em; }
pre code { padding: 0; }

/* 引用 */
blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(99,102,241,.05);
    padding: 1rem 1.5rem; border-radius: 0 var(--radius) var(--radius) 0;
    font-style: italic; color: var(--text-muted);
}

/* 表格 */
table { border-collapse: collapse; width: 100%; }
th, td { padding: .75rem; border: 1px solid var(--border); }
th { background: var(--primary); color: #fff; font-weight: 600; }
tr:nth-child(even) { background: rgba(99,102,241,.03); }

/* 分页 */
.pagination .page-numbers {
    background: var(--card); border: 1px solid var(--border);
    border-radius: 8px; padding: .5rem .9rem;
    color: var(--text); font-weight: 500;
}
.pagination .page-numbers.current {
    background: var(--primary); color: #fff; border-color: var(--primary);
}

/* 搜索框 */
.search-form input[type="search"] {
    border-radius: 8px; border: 1px solid var(--border);
    padding: .6rem 1rem; width: 100%;
}

/* 图片 */
.entry-content img, .wp-block-image img {
    border-radius: var(--radius); box-shadow: var(--shadow);
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

/* 选中文字 */
::selection { background: var(--primary); color: #fff; }

/* 响应式 */
@media (max-width: 768px) {
    article.post, article.page { padding: 1.25rem; }
}
/* ===== 美化覆盖 v2 by Operit ===== */
:root{--p:#6366f1;--pd:#4f46e5;--bg:#f1f5f9;--card:#fff;--t:#0f172a;--tm:#64748b;--b:#e2e8f0;--r:14px;--sh:0 1px 3px rgba(0,0,0,.06),0 4px 12px rgba(0,0,0,.05);--shh:0 12px 32px rgba(99,102,241,.15),0 4px 12px rgba(0,0,0,.08)}
body{background:var(--bg)!important;color:var(--t)}
.hero{background:linear-gradient(135deg,#6366f1,#8b5cf6,#a78bfa)!important;border-radius:0 0 var(--r) var(--r);box-shadow:0 8px 32px rgba(99,102,241,.25);position:relative;overflow:hidden}
.hero-kicker{color:rgba(255,255,255,.85)!important;font-weight:600;letter-spacing:2px;text-transform:uppercase;font-size:.8rem}
.hero h1,.hero-title{color:#fff!important;text-shadow:0 2px 8px rgba(0,0,0,.15)}
.hero-sub{color:rgba(255,255,255,.9)!important}
.site-header,.main-header{background:rgba(255,255,255,.88)!important;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 3px rgba(0,0,0,.08)!important;border-bottom:1px solid var(--b);position:sticky;top:0;z-index:200}
.site-header a,.main-header a,.brand,.brand a{color:var(--t)!important}
.brand{font-weight:800;font-size:1.3rem;letter-spacing:-.5px}
.brand a:hover{color:var(--p)!important}
.main-nav a{color:var(--tm)!important;font-weight:500;transition:color .2s}
.main-nav a:hover{color:var(--p)!important}
.post-card{background:var(--card);border-radius:var(--r)!important;box-shadow:var(--sh)!important;border:1px solid var(--b)!important;overflow:hidden;transition:transform .3s,box-shadow .3s}
.post-card:hover{transform:translateY(-6px)!important;box-shadow:var(--shh)!important;border-color:rgba(99,102,241,.3)!important}
.card-title,.card-title a{color:var(--t)!important;font-weight:700;line-height:1.4}
.card-title a:hover{color:var(--p)!important}
.card-excerpt{color:var(--tm);line-height:1.7}
.card-meta{color:var(--tm);font-size:.82rem}
.card-meta a{color:var(--p)}
.cat-pill{background:rgba(99,102,241,.1)!important;color:var(--p)!important;border-radius:20px!important;padding:.25rem .75rem!important;font-size:.78rem;font-weight:600}
.cat-pill:hover{background:var(--p)!important;color:#fff!important}
.btn,.btn-primary{border-radius:8px!important;font-weight:600!important;transition:all .2s!important}
.btn-primary{background:var(--p)!important;border-color:var(--p)!important;color:#fff!important}
.btn-primary:hover{background:var(--pd)!important;transform:translateY(-1px);box-shadow:0 4px 12px rgba(99,102,241,.35)}
.cta-band{background:linear-gradient(135deg,#6366f1,#8b5cf6)!important;border-radius:var(--r)!important;color:#fff;box-shadow:var(--sh)}
.cta-band a{color:#fff!important}
.widget{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);border:1px solid var(--b);padding:1.5rem;margin-bottom:1.5rem}
.widget-title,.widgettitle{font-size:.95rem;font-weight:700;padding-bottom:.75rem;border-bottom:2px solid var(--p);margin-bottom:1rem;color:var(--t)}
.site-footer,footer{background:#0f172a!important;color:#94a3b8!important;border-top:none!important}
.site-footer a,footer a{color:#cbd5e1!important}
.site-footer a:hover,footer a:hover{color:#fff!important}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08)!important}
a{color:var(--p);transition:color .2s}
a:hover{color:var(--pd)}
pre{background:#1e293b!important;color:#e2e8f0!important;border-radius:10px!important;padding:1.25rem!important}
code{background:rgba(99,102,241,.1);color:var(--p);border-radius:4px;padding:.15em .4em;font-size:.9em}
pre code{background:none;color:inherit;padding:0}
blockquote{border-left:4px solid var(--p)!important;background:rgba(99,102,241,.05)!important;border-radius:0 var(--r) var(--r) 0!important;padding:1rem 1.5rem;color:var(--tm)}
.post-card img,.entry-content img,.wp-block-image img{border-radius:var(--r)!important}
.back-to-top{background:var(--p)!important;color:#fff!important;border-radius:50%!important;box-shadow:0 4px 12px rgba(99,102,241,.35)!important}
.back-to-top:hover{background:var(--pd)!important;transform:translateY(-2px)}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--p);border-radius:3px}
::selection{background:var(--p);color:#fff}
@media(prefers-color-scheme:dark){:root{--bg:#0f172a;--card:#1e293b;--t:#e2e8f0;--tm:#94a3b8;--b:#334155}.site-header,.main-header{background:rgba(15,23,42,.88)!important}.site-header a,.main-header a,.brand,.brand a{color:var(--t)!important}.main-nav a{color:var(--tm)!important}}