@charset "UTF-8";
/* =========================================================
   AI 营销学院 - 全站样式（与业务代码完全分离，仅此一个入口）
   1. 设计令牌  2. 基础重置  3. 布局  4. 组件  5. 页面  6. 响应式
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --c-primary: #4f46e5;
  --c-primary-dark: #4338ca;
  --c-primary-soft: #eef2ff;
  --c-accent: #06b6d4;
  --c-warn: #f59e0b;
  --c-danger: #ef4444;
  --c-success: #10b981;
  --lv: var(--c-primary);

  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --bg-mute: #f1f3f9;
  --text: #1f2430;
  --text-soft: #565d6e;
  --text-mute: #8a90a2;
  --border: #e5e8f0;
  --border-strong: #d3d8e6;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(23, 28, 46, .06);
  --shadow: 0 6px 22px rgba(23, 28, 46, .08);
  --shadow-lg: 0 18px 44px rgba(23, 28, 46, .12);
  --grad: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  --grad-soft: linear-gradient(135deg, #eef2ff 0%, #e0f7fa 100%);
  --maxw: 1200px;
  --header-h: 66px;
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.7 "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .18s; }
a:hover { color: var(--c-primary-dark); }
h1, h2, h3, h4, h5 { margin: 0 0 .6em; line-height: 1.3; font-weight: 700; color: #171c2c; }
h1 { font-size: clamp(24px, 4vw, 36px); }
h2 { font-size: clamp(20px, 3vw, 28px); }
h3 { font-size: 18px; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
input, textarea, select, button { font: inherit; color: inherit; }
button { cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; border-top: 1px solid var(--border); margin: 24px 0; }
:focus-visible { outline: 3px solid rgba(79, 70, 229, .45); outline-offset: 2px; border-radius: 4px; }
.skip-link {
  position: absolute; left: -9999px; top: 0; background: #fff; padding: 10px 16px; z-index: 999;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- 3. 布局 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding: 54px 0; }
.section-soft { background: var(--bg-soft); }
.section-mute { background: var(--bg-mute); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 26px; flex-wrap: wrap; }
.section-head p { color: var(--text-soft); margin: 0; max-width: 640px; }
.eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--c-primary); font-weight: 700; margin-bottom: 8px;
}
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.row-between { justify-content: space-between; }
.spacer { flex: 1; }
.text-center { text-align: center; }
.muted { color: var(--text-mute); }
.small { font-size: 13px; }

/* ---------- 4. 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 18px; min-height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand-logo { width: 36px; height: 36px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 16px; color: #171c2c; }
.brand-text small { font-size: 11px; color: var(--text-mute); }
.site-nav { display: flex; gap: 4px; margin-left: 10px; }
.nav-link {
  padding: 8px 14px; border-radius: 999px; font-size: 15px; color: var(--text-soft); font-weight: 500;
}
.nav-link:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.nav-link.is-active { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 700; }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.mini-search { display: flex; align-items: center; background: var(--bg-mute); border: 1px solid var(--border); border-radius: 999px; padding: 3px 4px 3px 14px; }
.mini-search input { border: 0; background: transparent; width: 150px; outline: none; font-size: 14px; }
.mini-search button { border: 0; background: var(--c-primary); color: #fff; border-radius: 999px; padding: 5px 14px; font-size: 13px; }
.mini-search button:hover { background: var(--c-primary-dark); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; flex-direction: column; gap: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }

/* 桌面端：顶部导航压缩尺寸、强制单行，避免换行 */
@media (min-width: 861px) {
  .header-inner { gap: 12px; flex-wrap: nowrap; }
  .brand-logo { width: 32px; height: 32px; }
  .brand-text strong { font-size: 15px; }
  .brand-text small { font-size: 10.5px; }
  .site-nav { gap: 2px; margin-left: 6px; flex-wrap: nowrap; }
  .nav-link { padding: 7px 11px; font-size: 14px; white-space: nowrap; }
  .header-actions { gap: 8px; }
  .mini-search input { width: 120px; }
  .mini-search button { padding: 5px 12px; }
}
@media (min-width: 861px) and (max-width: 1080px) {
  .brand-text small { display: none; }
  .nav-link { padding: 6px 8px; font-size: 13.5px; }
  .mini-search input { width: 92px; }
  .header-actions .btn { padding: 6px 12px; font-size: 13px; }
}

/* ---------- 4.1 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; font-size: 15px; transition: all .18s; white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 16px rgba(79, 70, 229, .28); }
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 10px 22px rgba(79, 70, 229, .32); }
.btn-outline { border-color: var(--border-strong); color: var(--text); background: #fff; }
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-ghost { background: var(--bg-mute); color: var(--text); }
.btn-ghost:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.btn-danger { background: var(--c-danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; pointer-events: none; }
/* 不可点击的灰色按钮（会员等级页「低于当前等级」）—— 要比通用 disabled 更明确地灰掉 */
.btn-muted, .btn.btn-disabled {
  background: #eceef4; color: #9aa2b8; border-color: #e2e5ee; cursor: not-allowed;
  box-shadow: none; opacity: 1; pointer-events: auto; font-weight: 500;
}
.btn-muted:hover, .btn.btn-disabled:hover { color: #9aa2b8; transform: none; }

.badge {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; background: var(--c-primary-soft); color: var(--c-primary);
}
.badge-soft { background: var(--bg-mute); color: var(--text-soft); }
.badge-warn { background: #fff4e5; color: #b45309; }
.badge-success { background: #e7f8f1; color: #047857; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
/* 待确认(转账)：order_status_meta() 在用，此前漏定义导致该徽章无样式 */
.badge-info { background: #e0f2fe; color: #0369a1; }
.badge-level { background: var(--lv, var(--c-primary)); color: #fff; }
.avatar-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--lv, var(--c-primary)); display: inline-block; }

.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin: 16px 0; font-size: 14px; }
.alert-success { background: #e7f8f1; color: #047857; border: 1px solid #b6e6d3; }
.alert-warning { background: #fff7ed; color: #b45309; border: 1px solid #fcd9b6; }
.alert-error { background: #fee2e2; color: #b91c1c; border: 1px solid #f5b5b5; }

/* ---------- 4.2 卡片 ---------- */
.card {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #d8dcf0; }
.card-media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-mute); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-title { font-size: 16px; font-weight: 700; line-height: 1.45; margin: 0; }
.card-title a { color: #171c2c; }
.card-title a:hover { color: var(--c-primary); }
.card-excerpt { color: var(--text-soft); font-size: 14px; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; gap: 12px; flex-wrap: wrap; color: var(--text-mute); font-size: 12.5px; margin-top: auto; padding-top: 6px; }
.card-media-tag {
  position: absolute; left: 12px; top: 12px; background: rgba(23, 28, 46, .68); color: #fff;
  padding: 3px 10px; border-radius: 999px; font-size: 12px; backdrop-filter: blur(4px);
}

/* ---------- 4.3 首页 Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--bg-soft); border-bottom: 1px solid var(--border); }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto -10%; height: 520px;
  background: radial-gradient(60% 60% at 30% 20%, rgba(79, 70, 229, .16), transparent 70%),
              radial-gradient(50% 50% at 80% 10%, rgba(6, 182, 212, .16), transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; padding: 62px 0 54px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(28px, 4.6vw, 46px); letter-spacing: -.5px; }
.hero h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: 16.5px; color: var(--text-soft); max-width: 560px; }
.hero-stats { display: flex; gap: 28px; margin-top: 22px; flex-wrap: wrap; }
.hero-stats div strong { display: block; font-size: 24px; color: #171c2c; }
.hero-stats div span { font-size: 13px; color: var(--text-mute); }
.hero-visual { position: relative; }
.hero-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 20px; }
.hero-card h4 { margin-bottom: 14px; }
.hero-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.hero-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-soft); }
.hero-list li::before { content: "✓"; color: var(--c-success); font-weight: 700; }
.float-chip {
  position: absolute; right: -6px; bottom: -14px; background: #fff; border: 1px solid var(--border);
  border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow); font-size: 13px; display: flex; gap: 8px; align-items: center;
}

/* ---------- 4.4 价格 / 表格 ---------- */
.price { color: var(--c-danger); font-weight: 800; font-size: 20px; }
.price small { font-size: 12px; font-weight: 600; color: var(--text-mute); margin-left: 3px; }
.price-old { text-decoration: line-through; color: var(--text-mute); font-size: 13px; margin-left: 6px; }
.price-table { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { min-width: 640px; font-size: 14px; }
table.data th, table.data td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; }
table.data thead th { background: var(--bg-mute); font-weight: 700; color: #171c2c; white-space: nowrap; }
table.data tbody tr:hover { background: #fafbff; }
table.data td.num { color: var(--c-danger); font-weight: 700; }

/* ---------- 4.5 表单 ---------- */
.form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 16px; }
.field > label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; color: #2a3145; }
.field .hint { font-size: 12px; color: var(--text-mute); margin-top: 5px; }
.input, .textarea, .select {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: #fff; transition: border-color .18s, box-shadow .18s;
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, .14); outline: none; }
.textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.checkbox { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-soft); }
.inline-field { display: flex; gap: 10px; align-items: center; }
.captcha-img { border: 1px solid var(--border-strong); border-radius: var(--radius-sm); cursor: pointer; }
.auth-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; padding: 46px 0; }
.auth-side { background: var(--grad-soft); border-radius: var(--radius-lg); padding: 30px; }
.auth-side ul { list-style: none; padding: 0; }

/* ---------- 5. 页面：教程 ---------- */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 30px; align-items: start; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; }
.article-body { font-size: 16px; line-height: 1.9; color: #262c3d; }
.article-body h2 { margin-top: 1.6em; padding-left: 12px; border-left: 4px solid var(--c-primary); }
.article-body h3 { margin-top: 1.3em; }
.article-body img { border-radius: var(--radius-sm); margin: 12px 0; }
.article-body blockquote {
  margin: 18px 0; padding: 14px 18px; background: var(--c-primary-soft);
  border-left: 4px solid var(--c-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: #3730a3;
}
.article-body pre { background: #1e2436; color: #e6e9f2; padding: 16px; border-radius: var(--radius-sm); overflow-x: auto; }
.article-body code { background: var(--bg-mute); padding: 2px 6px; border-radius: 4px; font-size: 14px; }
.article-body pre code { background: none; color: inherit; padding: 0; }
.article-body ul li { margin-bottom: 6px; }
.article-meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--text-mute); font-size: 13px; padding: 12px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.side-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin-bottom: 18px; }
.side-card h4 { font-size: 15px; margin-bottom: 12px; }
.side-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.side-list li { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.side-thumb { width: 56px; height: 42px; border-radius: 6px; object-fit: cover; flex: none; background: var(--bg-mute); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a { background: var(--bg-mute); padding: 5px 12px; border-radius: 999px; font-size: 13px; color: var(--text-soft); }
.tag-cloud a:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.locked-box { background: linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 60%); text-align: center; padding: 30px; border: 1px dashed var(--border-strong); border-radius: var(--radius); }

/* ---------- 5.1 服务 / 套餐 ---------- */
.service-card .card-media { aspect-ratio: 16 / 10; }
.service-features { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; font-size: 13.5px; color: var(--text-soft); }
.service-features li::before { content: "▸"; color: var(--c-primary); margin-right: 6px; }
.pkg-card { position: relative; border-radius: var(--radius-lg); }
.pkg-card.is-hot { border: 2px solid var(--c-primary); }
.pkg-flag { position: absolute; right: 14px; top: -12px; background: var(--grad); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 999px; }
.pkg-price { display: flex; align-items: baseline; gap: 8px; margin: 6px 0 12px; }
.pkg-price .price { font-size: 30px; }
.level-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; position: relative; overflow: hidden; transition: .2s; }
.level-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.level-card .lv-bar { height: 4px; background: var(--lv, var(--c-primary)); border-radius: 999px; width: 56px; margin-bottom: 14px; }
.level-card h3 { display: flex; align-items: center; gap: 8px; }
.level-benefits { list-style: none; padding: 0; margin: 14px 0 18px; display: grid; gap: 8px; font-size: 14px; color: var(--text-soft); }
.level-benefits li::before { content: "✓"; color: var(--lv, var(--c-primary)); font-weight: 700; margin-right: 6px; }

/* ---------- 5.1.2 实战案例 ---------- */
.filter-bar { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 22px; display: grid; gap: 12px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.filter-label { font-size: 13px; color: var(--text-mute); width: 52px; flex: none; font-weight: 600; }
.case-card .card-media { aspect-ratio: 16 / 10; }
.card-media-tag-2 { left: auto; right: 10px; background: rgba(255, 255, 255, .92); color: var(--c-primary); }
.case-metric-inline { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 13px; margin: 10px 0 4px; padding: 8px 10px; background: var(--bg-mute); border-radius: var(--radius-sm); }
.case-metric-label { color: var(--text-mute); }
.case-metric-before { color: var(--text-mute); text-decoration: line-through; }
.case-metric-arrow { color: var(--text-mute); }
.case-metric-after { font-weight: 700; color: var(--c-danger); }
.case-badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.case-metrics { background: var(--grad-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin: 20px 0; }
.case-metrics h3 { margin: 0 0 14px; font-size: 16px; }
.case-metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.case-metric { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; display: grid; gap: 4px; }
.cm-label { font-size: 13px; color: var(--text-mute); }
.cm-value { font-size: 15px; }
.cm-value em { font-style: normal; color: var(--text-mute); }
.cm-value strong { color: var(--c-danger); font-size: 19px; }
.cm-delta { font-size: 13px; font-weight: 700; color: var(--c-danger); }
.case-block { margin: 22px 0; padding: 18px 20px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); }
.case-block h3 { margin-top: 0; padding-left: 12px; border-left: 4px solid var(--c-accent); }
.case-block ul li { margin-bottom: 6px; }
.case-block blockquote { margin: 14px 0; padding: 12px 16px; background: var(--c-primary-soft); border-left: 4px solid var(--c-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.article-figure { margin: 22px 0; }
.article-figure img { width: 100%; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.article-figure figcaption { margin-top: 8px; font-size: 13px; color: var(--text-mute); text-align: center; }

/* ---------- 5.2 会员中心 ---------- */
.member-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 26px; align-items: start; padding: 30px 0 50px; }
.member-nav { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; position: sticky; top: calc(var(--header-h) + 14px); }
.member-nav a { display: block; padding: 10px 14px; border-radius: var(--radius-sm); color: var(--text-soft); font-size: 14.5px; }
.member-nav a:hover, .member-nav a.is-active { background: var(--c-primary-soft); color: var(--c-primary); font-weight: 600; }
.member-hero { background: var(--grad); color: #fff; border-radius: var(--radius-lg); padding: 24px; display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.member-hero h2, .member-hero p { color: #fff; margin: 0; }
.member-hero .stat { background: rgba(255, 255, 255, .16); border-radius: var(--radius-sm); padding: 10px 16px; min-width: 100px; }
.member-hero .stat strong { display: block; font-size: 20px; }
.stat-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 18px 0; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-card strong { font-size: 22px; display: block; color: #171c2c; }
.stat-card span { font-size: 13px; color: var(--text-mute); }

/* ---------- 5.3 支付 ---------- */
.pay-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; max-width: 560px; margin: 30px auto; }
.pay-amount { font-size: 34px; font-weight: 800; color: var(--c-danger); }
.pay-methods { display: grid; gap: 10px; margin: 18px 0; }
.pay-method { display: flex; align-items: center; gap: 12px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); padding: 12px 16px; cursor: pointer; }
.pay-method input { width: 18px; height: 18px; accent-color: var(--c-primary); }
.pay-method.is-active { border-color: var(--c-primary); background: var(--c-primary-soft); }
.pay-method.is-disabled { opacity: .55; cursor: not-allowed; background: #f8fafc; }
/* 收款码：默认隐藏，选中对应支付方式后才显示那一张 */
.pay-qr { margin: 4px 0 18px; }
.pay-qr[hidden], .qr-card[hidden] { display: none !important; }
.qr-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; text-align: center; background: var(--c-primary-soft); }
.qr-card + .qr-card { margin-top: 14px; }
.qr-card img { display: block; width: 200px; height: 200px; margin: 0 auto; object-fit: contain; background: #fff; border: 1px solid var(--border); border-radius: 10px; }
.qr-title { font-weight: 700; font-size: 15px; margin-bottom: 12px; }
.qr-account { font-size: 13px; color: var(--text-mute); margin-top: 12px; word-break: break-all; }
.qr-tip { font-size: 13px; margin-top: 8px; line-height: 1.6; }

/* ---------- 5.4 后台 ---------- */
.admin-body { background: #f4f6fb; }
.admin-wrap { display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: 100vh; }
.admin-side { background: #1e2436; color: #c8cde0; padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.admin-side h3 { color: #fff; font-size: 15px; padding: 0 10px 10px; }
.admin-side .side-group { font-size: 11.5px; text-transform: uppercase; letter-spacing: .12em; color: #7b83a0; padding: 14px 12px 6px; }
.admin-side a { display: flex; align-items: center; gap: 8px; padding: 9px 12px; border-radius: var(--radius-sm); color: #c8cde0; font-size: 14px; }
.admin-side a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.admin-side a.is-active { background: var(--c-primary); color: #fff; }
/* 待处理留言角标 */
.admin-side .side-badge {
  margin-left: auto; min-width: 20px; padding: 1px 6px; border-radius: 999px;
  background: #ef4444; color: #fff; font-size: 11px; font-weight: 700;
  line-height: 1.6; text-align: center;
}
.admin-side a.is-active .side-badge { background: rgba(255, 255, 255, .28); }
.admin-main { padding: 22px 26px 60px; }
.admin-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.admin-panel { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.admin-panel h3 { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.admin-search { display: flex; gap: 8px; flex-wrap: wrap; }
.kpi { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpi-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.kpi-card span { font-size: 13px; color: var(--text-mute); }
.kpi-card strong { display: block; font-size: 26px; color: #171c2c; }
.admin-table { font-size: 14px; min-width: 720px; }
.admin-table th, .admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.admin-table thead th { background: var(--bg-mute); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; }
.form-grid .field-full { grid-column: 1 / -1; }
/* 后台图片上传控件（二维码等） */
.image-picker { display: flex; gap: 14px; align-items: flex-start; flex-wrap: wrap; }
.image-picker img {
  width: 132px; height: 132px; object-fit: contain; padding: 6px;
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
}
.image-picker-ops { flex: 1; min-width: 220px; }
.image-picker-ops input[type=file] { display: block; margin-bottom: 8px; font-size: 13px; }

/* ---------- 5.5 页脚 ---------- */
.site-footer { background: #171c2c; color: #a9b0c6; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; padding: 44px 20px 26px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col a { display: block; color: #a9b0c6; font-size: 14px; padding: 4px 0; }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; }
/* 客服微信二维码：页脚「服务时间」下方 */
.footer-qr { margin-top: 12px; }
.footer-qr img {
  display: block; width: 104px; height: 104px; padding: 5px;
  background: #fff; border-radius: 8px; border: 1px solid rgba(255, 255, 255, .14);
}
.footer-qr-tip { margin-top: 8px; font-size: 12px; line-height: 1.6; color: #7b83a0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 16px 20px; display: flex;
  justify-content: space-between; gap: 12px; font-size: 13px; color: #7b83a0; flex-wrap: wrap;
}
.to-top {
  position: fixed; right: 20px; bottom: 20px; width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--border); background: #fff; box-shadow: var(--shadow); color: var(--text-soft);
  display: none; align-items: center; justify-content: center; z-index: 50;
}
.to-top.is-show { display: flex; }

/* ---------- 5.x 分页 ---------- */
.pager { display: flex; flex-direction: column; align-items: center; gap: 12px; margin: 36px 0 10px; }
.pager-inner { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px; }
.pager-btn {
  display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px;
  padding: 0 14px; border-radius: 10px; border: 1px solid var(--border);
  background: #fff; color: var(--text-soft); font-size: 14px; font-weight: 600; transition: all .15s;
}
.pager-btn:hover { border-color: var(--c-primary); color: var(--c-primary); background: var(--c-primary-soft); }
.pager-btn.is-active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(79, 70, 229, .25); }
.pager-btn.is-disabled { opacity: .4; pointer-events: none; }
.pager-ellipsis { color: var(--text-mute); padding: 0 4px; user-select: none; }
.pager-meta { font-size: 13px; color: var(--text-mute); }

/* ---------- 5.x 横向滚动推荐 ---------- */
.hscroll {
  display: flex; gap: 16px; overflow-x: auto; padding: 4px 2px 12px; scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.hscroll::-webkit-scrollbar { height: 8px; }
.hscroll::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 999px; }
.hscroll-item { flex: 0 0 auto; width: 280px; scroll-snap-align: start; }
.hscroll-item .case-card { height: 100%; }
@media (max-width: 560px) { .hscroll-item { width: 78vw; } }

/* ---------- 6. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 480px; }
  .article-layout { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi, .stat-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 友情链接：仅电脑端显示，手机端隐藏 */
.friend-links { padding: 30px 0; border-top: 1px solid var(--border); background: var(--bg-soft); }
.friend-links-inner { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.friend-links-inner h4 { margin: 0; font-size: 15px; color: var(--text-soft); white-space: nowrap; }
.friend-links-list { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 0; padding: 0; list-style: none; }
.friend-links-list a { color: var(--text-soft); font-size: 14px; }
.friend-links-list a:hover { color: var(--c-primary); }

/* 微信登录 */
.btn-wx { background: #07c160; border-color: #07c160; color: #fff; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-wx:hover { background: #06a552; border-color: #06a552; color: #fff; }
.wx-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  background: rgba(255, 255, 255, .22); font-size: 10px; line-height: 1;
}
.auth-alt { display: flex; align-items: center; gap: 12px; margin: 20px 0 14px; color: var(--text-soft); font-size: 13px; }
.auth-alt::before, .auth-alt::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.wx-login-btn { text-align: center; }
.wx-bound { display: flex; align-items: center; gap: 12px; }
.wx-bound-avatar { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }

@media (max-width: 860px) {
  .friend-links { display: none; }   /* 手机端不占屏幕 */
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 auto 0; background: #fff; flex-direction: column;
    padding: 12px 18px 18px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .2s; gap: 2px;
  }
  .site-nav.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-link { padding: 12px 14px; font-size: 16px; }
  .mini-search { display: none; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .case-metric-grid { grid-template-columns: 1fr 1fr; }
  .filter-label { width: auto; }
  .member-layout { grid-template-columns: 1fr; }
  .member-nav { position: static; display: flex; gap: 6px; overflow-x: auto; }
  .member-nav a { white-space: nowrap; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-side { order: -1; }
  .form-grid { grid-template-columns: 1fr; }
  .admin-wrap { grid-template-columns: 1fr; }
  .admin-side { position: static; height: auto; }
  .admin-side a { display: inline-flex; }
  .section { padding: 38px 0; }
}

@media (max-width: 560px) {
  .container { padding: 0 14px; }
  .grid-4 { grid-template-columns: 1fr; }
  .kpi, .stat-cards { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  /* .container 的移动端 padding 会覆盖页脚自身内边距，这里显式补回，避免文字贴边 */
  .footer-grid { padding: 30px 14px 18px; gap: 22px; }
  .footer-bottom {
    padding: 14px 14px calc(16px + env(safe-area-inset-bottom, 0px));
    flex-direction: column; align-items: center; text-align: center; gap: 6px;
  }
  .hero { text-align: left; }
  .hero-stats { gap: 18px; }
  .brand-text small { display: none; }
  .btn { padding: 9px 16px; font-size: 14px; }
  .admin-main { padding: 16px 14px 50px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* 会员中心：手机端表格转为卡片，避免横向滚动 */
@media (max-width: 640px) {
  /* 概览区：昵称/等级独占一行，三项统计均分一行 */
  .member-hero { gap: 14px; padding: 18px; }
  .member-hero > div:first-child { flex: 0 0 100%; }
  .member-hero .spacer { display: none; }
  .member-hero .stat { flex: 1 1 0; min-width: 0; text-align: center; padding: 8px 6px; }
  .member-hero h2 { font-size: 20px; }

  /* 统计卡片：一行两列更紧凑 */
  .stat-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card strong { font-size: 19px; }

  /* 数据表 → 卡片 */
  table.is-mobile-cards,
  table.is-mobile-cards tbody,
  table.is-mobile-cards tr,
  table.is-mobile-cards td { display: block; width: 100%; box-sizing: border-box; }
  table.is-mobile-cards { min-width: 0; border: 0; }
  table.is-mobile-cards thead { display: none; }
  table.is-mobile-cards tr {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    padding: 4px 14px;
    background: #fff;
  }
  table.is-mobile-cards tbody tr:hover { background: #fff; }
  table.is-mobile-cards td {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 9px 0; border-bottom: 1px solid var(--border); text-align: right;
  }
  table.is-mobile-cards td:last-child { border-bottom: none; }
  table.is-mobile-cards td::before {
    content: attr(data-label);
    font-weight: 600; color: var(--text-mute); text-align: left;
    flex: 0 0 auto; margin-right: auto;
  }
  table.is-mobile-cards td.num { color: var(--c-danger); font-weight: 700; }
  /* 操作列：按钮纵向铺满，便于单手点按 */
  table.is-mobile-cards td[data-label="操作"] { flex-direction: column; align-items: stretch; }
  table.is-mobile-cards td[data-label="操作"] .btn { width: 100%; margin-top: 8px; }
}

@media print {
  .site-header, .site-footer, .to-top, .mini-search { display: none !important; }
  body { background: #fff; }
}