/*
Theme Name: 丹丹AI情报站主题
Theme URI: https://api.xiaoyouxihu.com
Author: 丹丹AI情报站
Description: 聚焦 AI 领域"薅羊毛"资讯的定制主题,复刻 woolpress 风格:绿色强调色、白卡片、暗色模式、热榜侧栏。
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GPLv2 or later
Text Domain: dandan
*/

/* ===================== 设计令牌 ===================== */
:root {
  --dd-bg: #f4f6f8;
  --dd-card: #ffffff;
  --dd-text: #24292f;
  --dd-sub: #6b7280;
  --dd-line: #e6eaf0;
  --dd-accent: #00b96b;
  --dd-accent-dark: #009e5c;
  --dd-accent-soft: #e9f9f2;
  --dd-footer: #24272b;
  --dd-radius: 12px;
  --dd-shadow: 0 8px 24px rgba(20, 40, 60, .08);
  --dd-warn-bg: #fff4e5;
  --dd-warn-text: #c96f1e;
}
html[data-theme="dark"] {
  --dd-bg: #14171a;
  --dd-card: #1d2126;
  --dd-text: #e8eaed;
  --dd-sub: #9aa4af;
  --dd-line: #2c3136;
  --dd-accent-soft: rgba(0, 185, 107, .14);
  --dd-footer: #101214;
  --dd-warn-bg: rgba(201, 111, 30, .18);
  --dd-warn-text: #e8a35c;
}

/* ===================== 基础 ===================== */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--dd-bg);
  color: var(--dd-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--dd-accent); }
img { max-width: 100%; height: auto; }
::selection { background: var(--dd-accent); color: #fff; }

.dd-container { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.dd-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; padding: 24px 0 40px; }
.dd-main { min-width: 0; }

/* 阅读进度条 */
#dd-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 999;
  background: linear-gradient(90deg, #00b96b, #2fd18b);
  border-radius: 0 3px 3px 0; pointer-events: none; display: none;
}
body.single #dd-progress { display: block; }

/* ===================== 顶部导航 ===================== */
.dd-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--dd-card);
  border-bottom: 1px solid var(--dd-line);
  transition: box-shadow .2s ease, background .25s ease;
}
.dd-header.is-scrolled { box-shadow: 0 4px 16px rgba(20, 40, 60, .10); }
.dd-header-inner { height: 64px; display: flex; align-items: center; gap: 22px; }
.dd-logo {
  display: flex; align-items: center; gap: 9px;
  font-size: 19px; font-weight: 800; letter-spacing: .5px; white-space: nowrap;
}
.dd-logo:hover { color: inherit; }
.dd-logo-mark {
  width: 26px; height: 26px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, #00b96b, #2fd18b);
  display: grid; place-items: center; color: #fff; font-size: 14px; font-weight: 900;
  box-shadow: 0 3px 10px rgba(0, 185, 107, .35);
}
.dd-logo .dd-logo-sub { font-size: 11px; font-weight: 600; color: var(--dd-accent); background: var(--dd-accent-soft); padding: 1px 7px; border-radius: 20px; margin-left: 2px; }

.dd-nav { display: flex; align-items: center; gap: 2px; flex: 1; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.dd-nav::-webkit-scrollbar { display: none; }
.dd-nav a {
  padding: 7px 13px; border-radius: 20px; font-size: 14.5px; font-weight: 500;
  color: var(--dd-text); white-space: nowrap;
}
.dd-nav a:hover { background: var(--dd-accent-soft); color: var(--dd-accent); }
.dd-nav .current-menu-item > a,
.dd-nav .current_page_item > a { background: var(--dd-accent-soft); color: var(--dd-accent); font-weight: 600; }

.dd-header-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.dd-search {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--dd-line); border-radius: 18px;
  padding: 5px 12px; background: var(--dd-bg);
  transition: border-color .2s ease, background .2s ease;
}
.dd-search:focus-within { border-color: var(--dd-accent); background: var(--dd-card); }
.dd-search input {
  border: 0; outline: 0; background: transparent; color: var(--dd-text);
  width: 130px; font-size: 13.5px; transition: width .25s ease;
}
.dd-search:focus-within input { width: 210px; }
.dd-search svg { flex: none; stroke: var(--dd-sub); }
.dd-icon-btn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--dd-line);
  background: transparent; color: var(--dd-text); display: grid; place-items: center;
  cursor: pointer; transition: all .2s ease; flex: none;
}
.dd-icon-btn:hover { border-color: var(--dd-accent); color: var(--dd-accent); }
.dd-btn-login {
  border: 1px solid var(--dd-accent); color: var(--dd-accent);
  border-radius: 18px; padding: 5px 16px; font-size: 13.5px; font-weight: 600;
  transition: all .2s ease; white-space: nowrap;
}
.dd-btn-login:hover { background: var(--dd-accent); color: #fff; }
.dd-menu-toggle { display: none; }

/* ===================== Hero 轮播 ===================== */
.dd-hero { padding-top: 20px; }
.dd-hero-wrap { position: relative; border-radius: var(--dd-radius); overflow: hidden; box-shadow: var(--dd-shadow); }
.dd-hero-track { display: flex; transition: transform .55s cubic-bezier(.4, 0, .2, 1); }
.dd-hero-slide {
  position: relative; flex: 0 0 100%; min-height: 320px; max-height: 400px;
  display: flex; align-items: flex-end; overflow: hidden;
}
.dd-hero-slide .dd-hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.02); transition: transform .6s ease;
}
.dd-hero-slide:hover .dd-hero-bg { transform: scale(1.06); }
.dd-hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 18, 0) 30%, rgba(10, 14, 18, .82) 100%);
}
.dd-hero-body { position: relative; z-index: 2; padding: 28px 30px 26px; color: #fff; width: 100%; }
.dd-hero-body .dd-badge { background: rgba(0, 185, 107, .9); color: #fff; }
.dd-hero-title { margin: 10px 0 6px; font-size: 25px; line-height: 1.35; font-weight: 800; }
.dd-hero-title a { color: #fff; }
.dd-hero-title a:hover { color: #7fe3b4; }
.dd-hero-excerpt { margin: 0 0 10px; color: rgba(255, 255, 255, .82); font-size: 14px; max-width: 720px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dd-hero-meta { display: flex; gap: 16px; color: rgba(255, 255, 255, .68); font-size: 12.5px; align-items: center; }
.dd-hero-body .dd-meta-item svg { opacity: .8; }
.dd-hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 38px; height: 38px; border-radius: 50%; border: 0; cursor: pointer;
  background: rgba(17, 20, 24, .45); color: #fff; font-size: 18px; line-height: 1;
  display: grid; place-items: center; transition: background .2s ease; opacity: 0;
}
.dd-hero-wrap:hover .dd-hero-arrow { opacity: 1; }
.dd-hero-arrow:hover { background: var(--dd-accent); }
.dd-hero-prev { left: 14px; }
.dd-hero-next { right: 14px; }
.dd-hero-dots { position: absolute; bottom: 12px; right: 18px; z-index: 3; display: flex; gap: 6px; }
.dd-hero-dots button {
  width: 8px; height: 8px; border-radius: 4px; border: 0; padding: 0; cursor: pointer;
  background: rgba(255, 255, 255, .45); transition: all .25s ease;
}
.dd-hero-dots button.is-active { width: 22px; background: var(--dd-accent); }

/* ===================== 区块通用 ===================== */
.dd-section { margin-top: 26px; }
.dd-section-head { display: flex; align-items: baseline; justify-content: space-between; margin: 0 0 12px; }
.dd-section-title { margin: 0; font-size: 17.5px; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.dd-section-title::before {
  content: ""; width: 4px; height: 17px; border-radius: 2px;
  background: linear-gradient(180deg, #00b96b, #2fd18b);
}
.dd-section-more { font-size: 13px; color: var(--dd-sub); font-weight: 500; }
.dd-section-more:hover { color: var(--dd-accent); }

/* ===================== 分类 Tab ===================== */
.dd-tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 14px; scrollbar-width: none; }
.dd-tabs::-webkit-scrollbar { display: none; }
.dd-tabs a {
  padding: 6px 16px; border-radius: 18px; font-size: 14px; font-weight: 500;
  background: var(--dd-card); color: var(--dd-sub); border: 1px solid var(--dd-line);
  white-space: nowrap; transition: all .2s ease;
}
.dd-tabs a:hover { color: var(--dd-accent); border-color: var(--dd-accent); }
.dd-tabs a.is-active { background: var(--dd-accent); border-color: var(--dd-accent); color: #fff; font-weight: 600; }

/* ===================== 文章卡片 ===================== */
.dd-card-list { display: flex; flex-direction: column; gap: 14px; }
.dd-card {
  display: flex; gap: 16px; padding: 16px; border-radius: var(--dd-radius);
  background: var(--dd-card); transition: box-shadow .2s ease;
}
.dd-card:hover { box-shadow: var(--dd-shadow); }
.dd-card-thumb {
  flex: none; width: 218px; height: 150px; border-radius: 8px; overflow: hidden;
  background: var(--dd-bg);
}
.dd-card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.dd-card:hover .dd-card-thumb img { transform: scale(1.045); }
.dd-card-body { min-width: 0; flex: 1; display: flex; flex-direction: column; }
.dd-card-top { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; }
.dd-badge {
  display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px;
  font-weight: 600; background: var(--dd-accent-soft); color: var(--dd-accent);
  white-space: nowrap; line-height: 1.6;
}
.dd-badge.state-limited { background: var(--dd-accent-soft); color: var(--dd-accent); }
.dd-badge.state-soon { background: var(--dd-warn-bg); color: var(--dd-warn-text); }
.dd-badge.state-expired { background: var(--dd-line); color: var(--dd-sub); }
.dd-card-title { margin: 0 0 8px; font-size: 18px; line-height: 1.45; font-weight: 700; }
.dd-card-title a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dd-card-title a:hover { color: var(--dd-accent); }
.dd-card-excerpt {
  margin: 0; color: var(--dd-sub); font-size: 13.5px; line-height: 1.75;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.dd-card-meta { margin-top: auto; padding-top: 10px; display: flex; align-items: center; gap: 16px; color: var(--dd-sub); font-size: 12.5px; }
.dd-meta-item { display: inline-flex; align-items: center; gap: 4px; }
.dd-meta-item svg { flex: none; }
.dd-meta-item.is-liked { color: var(--dd-accent); }

/* 编辑推荐小卡 */
.dd-picks { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.dd-pick-card { display: flex; gap: 12px; padding: 14px; border-radius: var(--dd-radius); background: var(--dd-card); transition: box-shadow .2s ease; }
.dd-pick-card:hover { box-shadow: var(--dd-shadow); }
.dd-pick-thumb { flex: none; width: 108px; height: 76px; border-radius: 8px; overflow: hidden; background: var(--dd-bg); }
.dd-pick-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.dd-pick-card:hover .dd-pick-thumb img { transform: scale(1.045); }
.dd-pick-body { min-width: 0; display: flex; flex-direction: column; }
.dd-pick-title { margin: 0 0 4px; font-size: 14.5px; font-weight: 700; line-height: 1.5; }
.dd-pick-title a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dd-pick-meta { margin-top: auto; display: flex; gap: 12px; color: var(--dd-sub); font-size: 12px; }

/* 无封面占位 */
.dd-cover-ph {
  width: 100%; height: 100%; display: grid; place-items: center;
  color: #fff; font-size: 34px; font-weight: 900; letter-spacing: 2px;
}

/* ===================== 侧栏 ===================== */
.dd-sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: 16px; }
.dd-widget { background: var(--dd-card); border-radius: var(--dd-radius); padding: 18px; }
.dd-widget-title { margin: 0 0 12px; font-size: 16px; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.dd-widget-title::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: linear-gradient(180deg, #00b96b, #2fd18b); }
.dd-rank-list { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.dd-rank-list li { display: flex; align-items: flex-start; gap: 10px; padding: 7px 0; border-bottom: 1px dashed var(--dd-line); }
.dd-rank-list li:last-child { border-bottom: 0; }
.dd-rank-list a { flex: 1; font-size: 13.5px; line-height: 1.55; font-weight: 500; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dd-rank-num {
  flex: none; width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center;
  font-size: 12px; font-weight: 800; background: var(--dd-line); color: var(--dd-sub); margin-top: 2px;
}
.dd-rank-list li:nth-child(1) .dd-rank-num { background: linear-gradient(135deg, #00b96b, #2fd18b); color: #fff; }
.dd-rank-list li:nth-child(2) .dd-rank-num { background: linear-gradient(135deg, #3ec28f, #6bd3a8); color: #fff; }
.dd-rank-list li:nth-child(3) .dd-rank-num { background: linear-gradient(135deg, #7cccaa, #a5dfc6); color: #fff; }
.dd-rank-views { flex: none; color: var(--dd-sub); font-size: 12px; margin-top: 3px; }

.dd-cat-list { list-style: none; margin: 0; padding: 0; }
.dd-cat-list li { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; border-bottom: 1px dashed var(--dd-line); }
.dd-cat-list li:last-child { border-bottom: 0; }
.dd-cat-list a { font-size: 14px; font-weight: 500; }
.dd-cat-list .count { font-size: 12px; color: var(--dd-sub); background: var(--dd-bg); border-radius: 10px; padding: 0 9px; line-height: 20px; }
html[data-theme="dark"] .dd-cat-list .count { background: var(--dd-line); }

.dd-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.dd-tag-cloud a {
  font-size: 13px; padding: 3px 11px; border-radius: 20px;
  background: var(--dd-bg); color: var(--dd-sub); transition: all .18s ease;
}
html[data-theme="dark"] .dd-tag-cloud a { background: #242a30; }
.dd-tag-cloud a:hover { background: var(--dd-accent); color: #fff; }

.dd-wechat { text-align: center; }
.dd-wechat img, .dd-wechat .dd-qr-ph { width: 150px; height: 150px; border-radius: 8px; margin: 6px auto 10px; display: block; }
.dd-wechat .dd-qr-ph {
  background: repeating-conic-gradient(var(--dd-bg) 0 25%, var(--dd-line) 0 50%);
  background-size: 16px 16px; display: grid; place-items: center;
  color: var(--dd-sub); font-size: 12px; font-weight: 500; letter-spacing: 1px;
}
.dd-wechat p { margin: 0; font-size: 12.5px; color: var(--dd-sub); }

/* ===================== 文章详情 ===================== */
.dd-breadcrumb { padding: 16px 0 0; font-size: 13px; color: var(--dd-sub); }
.dd-breadcrumb a:hover { color: var(--dd-accent); }
.dd-breadcrumb .sep { margin: 0 6px; color: var(--dd-line); }
.dd-single-card { background: var(--dd-card); border-radius: var(--dd-radius); padding: 30px 34px; margin-top: 14px; }
.dd-single-cat { margin-bottom: 10px; }
.dd-single-title { margin: 0 0 14px; font-size: 27px; line-height: 1.4; font-weight: 800; }
.dd-single-meta { display: flex; flex-wrap: wrap; gap: 16px; color: var(--dd-sub); font-size: 13px; padding-bottom: 18px; border-bottom: 1px solid var(--dd-line); margin-bottom: 22px; }
.dd-entry-content { font-size: 16px; line-height: 1.95; word-break: break-word; }
.dd-entry-content p { margin: 0 0 1.2em; }
.dd-entry-content h2, .dd-entry-content h3, .dd-entry-content h4 { font-weight: 800; line-height: 1.5; margin: 1.6em 0 .8em; }
.dd-entry-content h2 { font-size: 21px; padding-left: 12px; border-left: 4px solid var(--dd-accent); }
.dd-entry-content h3 { font-size: 18px; }
.dd-entry-content a { color: var(--dd-accent); text-decoration: underline; text-underline-offset: 3px; }
.dd-entry-content a:hover { color: var(--dd-accent-dark); }
.dd-entry-content ul, .dd-entry-content ol { padding-left: 1.5em; margin: 0 0 1.2em; }
.dd-entry-content li { margin: .35em 0; }
.dd-entry-content li::marker { color: var(--dd-accent); }
.dd-entry-content blockquote {
  margin: 0 0 1.2em; padding: 12px 18px; border-left: 4px solid var(--dd-accent);
  background: var(--dd-accent-soft); border-radius: 0 8px 8px 0; color: var(--dd-sub);
}
.dd-entry-content code {
  background: var(--dd-bg); padding: 2px 7px; border-radius: 6px;
  font-size: .88em; font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}
.dd-entry-content pre { background: #1d2126; color: #e8eaed; padding: 16px 18px; border-radius: 8px; overflow-x: auto; font-size: 13.5px; line-height: 1.8; }
.dd-entry-content pre code { background: transparent; padding: 0; color: inherit; }
.dd-entry-content img { border-radius: 8px; }
.dd-entry-content table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; font-size: 14px; }
.dd-entry-content th, .dd-entry-content td { border: 1px solid var(--dd-line); padding: 9px 13px; text-align: left; }
.dd-entry-content th { background: var(--dd-bg); font-weight: 700; }
.dd-entry-content .wp-caption-text, .dd-entry-content figcaption { color: var(--dd-sub); font-size: 13px; text-align: center; }

.dd-single-tags { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--dd-line); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.dd-single-tags .label { color: var(--dd-sub); font-size: 13px; margin-right: 2px; }
.dd-single-tags a { font-size: 13px; padding: 3px 12px; border-radius: 20px; background: var(--dd-bg); color: var(--dd-sub); }
html[data-theme="dark"] .dd-single-tags a { background: #242a30; }
.dd-single-tags a:hover { background: var(--dd-accent); color: #fff; }

.dd-like-row { margin-top: 24px; display: flex; justify-content: center; }
.dd-like-btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  border: 1px solid var(--dd-accent); color: var(--dd-accent); background: transparent;
  border-radius: 22px; padding: 9px 30px; font-size: 15px; font-weight: 600; transition: all .2s ease;
}
.dd-like-btn:hover { background: var(--dd-accent); color: #fff; }
.dd-like-btn.is-liked { background: var(--dd-accent); color: #fff; border-color: var(--dd-accent); }
.dd-like-btn svg { fill: none; }
.dd-like-btn.is-liked svg { fill: currentColor; }

.dd-related { margin-top: 30px; }
.dd-related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.dd-related-card { background: var(--dd-card); border-radius: var(--dd-radius); padding: 15px; transition: box-shadow .2s ease; }
.dd-related-card:hover { box-shadow: var(--dd-shadow); }
.dd-related-card .t { margin: 0 0 8px; font-size: 14.5px; font-weight: 700; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dd-related-card .m { color: var(--dd-sub); font-size: 12.5px; }

/* ===================== 归档/搜索/页面 ===================== */
.dd-page-card { background: var(--dd-card); border-radius: var(--dd-radius); padding: 30px 34px; }
.dd-page-title { margin: 0 0 6px; font-size: 25px; font-weight: 800; }
.dd-page-desc { margin: 0 0 18px; color: var(--dd-sub); font-size: 14px; }
.dd-hot-row { display: flex; align-items: center; gap: 12px; }
.dd-hot-row .rank {
  flex: none; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  font-weight: 800; font-size: 13px; background: var(--dd-line); color: var(--dd-sub);
}
.dd-hot-row:nth-child(1) .rank, .dd-hot-item:first-child .rank { background: linear-gradient(135deg, #00b96b, #2fd18b); color: #fff; }

/* 分页 */
.dd-pagination { margin-top: 24px; display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; }
.dd-pagination .page-numbers {
  min-width: 34px; height: 34px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; background: var(--dd-card); font-size: 14px; font-weight: 500; border: 1px solid var(--dd-line);
}
.dd-pagination .page-numbers.current { background: var(--dd-accent); border-color: var(--dd-accent); color: #fff; }
.dd-pagination .page-numbers:hover:not(.current) { border-color: var(--dd-accent); color: var(--dd-accent); }

/* 404 */
.dd-404 { text-align: center; padding: 90px 20px; }
.dd-404 h1 { font-size: 64px; margin: 0; background: linear-gradient(135deg, #00b96b, #2fd18b); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dd-404 p { color: var(--dd-sub); margin: 12px 0 24px; }
.dd-btn {
  display: inline-block; background: var(--dd-accent); color: #fff; border-radius: 22px;
  padding: 10px 26px; font-weight: 600; transition: background .2s ease;
}
.dd-btn:hover { background: var(--dd-accent-dark); color: #fff; }

/* ===================== 页脚 ===================== */
.dd-footer { background: var(--dd-footer); color: #b8bec6; margin-top: 40px; }
.dd-footer a { color: #b8bec6; }
.dd-footer a:hover { color: #2fd18b; }
.dd-footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr auto; gap: 36px; padding: 40px 0 30px; }
.dd-footer h4 { color: #fff; font-size: 15px; margin: 0 0 12px; }
.dd-footer .about p { margin: 0 0 10px; font-size: 13.5px; line-height: 1.8; }
.dd-footer ul { list-style: none; margin: 0; padding: 0; }
.dd-footer ul li { margin: 7px 0; font-size: 13.5px; }
.dd-footer .qr img, .dd-footer .qr .dd-qr-ph { width: 120px; height: 120px; border-radius: 8px; }
.dd-footer .qr p { font-size: 12px; text-align: center; margin: 8px 0 0; color: #8b929b; }
.dd-footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 16px 0; text-align: center; font-size: 12.5px; color: #8b929b; }
.dd-footer-bottom a { color: #8b929b; }

/* ===================== 浮动元素 ===================== */
#dd-backtop {
  position: fixed; right: 22px; bottom: 90px; z-index: 90;
  width: 42px; height: 42px; border-radius: 12px; border: 0; cursor: pointer;
  background: var(--dd-card); color: var(--dd-accent); font-size: 18px;
  box-shadow: var(--dd-shadow); opacity: 0; visibility: hidden;
  transition: all .25s ease; display: grid; place-items: center;
}
#dd-backtop.show { opacity: 1; visibility: visible; }
#dd-backtop:hover { background: var(--dd-accent); color: #fff; }

.dd-tabbar {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 95;
  background: var(--dd-card); border-top: 1px solid var(--dd-line);
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
}
.dd-tabbar-inner { display: flex; }
.dd-tabbar a {
  flex: 1; text-align: center; font-size: 11px; color: var(--dd-sub); font-weight: 500;
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 3px 0;
}
.dd-tabbar a svg { width: 21px; height: 21px; }
.dd-tabbar a.is-active { color: var(--dd-accent); }

/* 移动端抽屉菜单 */
.dd-drawer-mask { display: none; position: fixed; inset: 0; background: rgba(10, 14, 18, .5); z-index: 98; }
.dd-drawer {
  position: fixed; top: 0; left: -280px; bottom: 0; width: 264px; z-index: 99;
  background: var(--dd-card); padding: 20px; transition: left .28s ease; overflow-y: auto;
}
.dd-drawer.open { left: 0; }
.dd-drawer-mask.show { display: block; }
.dd-drawer a { display: block; padding: 11px 12px; border-radius: 10px; font-size: 15px; font-weight: 500; }
.dd-drawer a:hover, .dd-drawer .current-menu-item > a { background: var(--dd-accent-soft); color: var(--dd-accent); }

/* ===================== 响应式 ===================== */
@media (max-width: 960px) {
  .dd-layout { grid-template-columns: 1fr; }
  .dd-sidebar { position: static; }
  .dd-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .dd-nav { display: none; }
  .dd-menu-toggle { display: grid; }
  .dd-search input { width: 90px; }
  .dd-search:focus-within input { width: 130px; }
  .dd-btn-login { display: none; }
  .dd-hero-slide { min-height: 230px; max-height: 280px; }
  .dd-hero-body { padding: 18px 18px 22px; }
  .dd-hero-title { font-size: 19px; }
  .dd-hero-arrow { display: none; }
  .dd-card { flex-direction: column; gap: 10px; padding: 14px; }
  .dd-card-thumb { width: 100%; height: 172px; }
  .dd-card-title { font-size: 16.5px; }
  .dd-picks { grid-template-columns: 1fr; }
  .dd-single-card, .dd-page-card { padding: 22px 18px; }
  .dd-single-title { font-size: 22px; }
  .dd-entry-content { font-size: 15.5px; }
  .dd-related-grid { grid-template-columns: 1fr; }
  .dd-tabbar { display: block; }
  body { padding-bottom: 62px; }
  #dd-backtop { bottom: 76px; right: 14px; width: 38px; height: 38px; }
  .dd-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  input, textarea, select { font-size: 16px; }
}