/*
Theme Name: Base_PixelDiffusion
Theme URI: https://example.invalid/base-pixeldiffusion
Author: WKEA
Author URI: https://example.invalid
Description: 深色风格落地页主题，用于展示 PixelDiffusion（16×16 我的世界像素纹理扩散模型）。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: base-pixeldiffusion
Tags: dark, custom-background, custom-logo, one-column, two-columns
*/

/*
  Base_PixelDiffusion
  - 说明：本主题优先用系统字体，保证加载快、深色观感一致。
  - 维护建议：如需扩展样式，请尽量沿用 CSS 变量（--pd-*），避免到处硬编码颜色值。
*/

:root{
  /* 主题色板（深色） */
  --pd-bg: #070910;
  --pd-bg2: #0a0f1c;
  --pd-surface: rgba(255,255,255,.06);
  --pd-surface-2: rgba(255,255,255,.08);
  --pd-border: rgba(255,255,255,.14);
  --pd-text: rgba(255,255,255,.92);
  --pd-muted: rgba(255,255,255,.70);
  --pd-faint: rgba(255,255,255,.52);
  --pd-accent: #8b5cf6;   /* 紫 */
  --pd-accent-2: #22d3ee; /* 青 */
  --pd-ok: #34d399;
  --pd-warn: #fbbf24;

  /* 排版/间距 */
  --pd-radius: 16px;
  --pd-radius-sm: 12px;
  --pd-shadow: 0 24px 60px rgba(0,0,0,.55);
  --pd-max: 1216px;
  --pd-pad: clamp(16px, 2vw, 22px);
  --pd-gap: clamp(14px, 2vw, 18px);
  --pd-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  --pd-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  color: var(--pd-text);
  background: radial-gradient(1200px 900px at 20% -10%, rgba(139,92,246,.20), transparent 55%),
              radial-gradient(900px 700px at 85% 0%, rgba(34,211,238,.16), transparent 50%),
              linear-gradient(180deg, var(--pd-bg), var(--pd-bg2));
  font-family: var(--pd-font);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

img{ max-width: 100%; height: auto; }

/* 可访问：跳过到内容 */
.pd-skip-link{
  position: absolute;
  left: -999px;
  top: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(0,0,0,.65);
  border: 1px solid var(--pd-border);
  color: var(--pd-text);
  z-index: 9999;
}
.pd-skip-link:focus{ left: 12px; }

.pd-wrap{
  width: min(var(--pd-max), calc(100% - var(--pd-pad) * 2));
  margin: 0 auto;
}

/* 顶部栏（新版风格） */
.pd-topbar{
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(9,9,11,.86), rgba(9,9,11,.6));
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.pd-topbar-inner{
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}
.pd-topbar-brand{
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.pd-topbar-mark{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(52,211,153,.95), rgba(16,185,129,.75));
  box-shadow: 0 10px 26px rgba(0,0,0,.45);
  border: 1px solid rgba(255,255,255,.16);
}
.pd-topbar-title{
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.pd-topbar-title strong{
  font-size: 14px;
  letter-spacing: .3px;
}
.pd-topbar-title span{
  font-size: 12px;
  color: var(--pd-muted);
}
.pd-topbar-badge{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--pd-ok);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.pd-topbar-dot{
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--pd-ok);
  box-shadow: 0 0 0 4px rgba(52,211,153,.16);
}
.pd-topbar-nav{
  display: flex;
  justify-content: center;
  min-width: 0;
}
.pd-topbar-menu{
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.pd-topbar-menu li{ margin: 0; padding: 0; }
.pd-topbar-menu a{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--pd-muted);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.pd-topbar-menu a:hover{
  text-decoration: none;
  color: var(--pd-text);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.10);
}
.pd-topbar-menu .current-menu-item > a,
.pd-topbar-menu .current_page_item > a{
  color: var(--pd-text);
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.12);
}
.pd-topbar-actions{
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}
.pd-topbar-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid rgba(52,211,153,.55);
  background: rgba(52,211,153,.12);
  color: var(--pd-ok);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  transition: background .12s ease, border-color .12s ease, transform .12s ease;
}
.pd-topbar-btn:hover{
  text-decoration: none;
  background: rgba(52,211,153,.2);
  border-color: rgba(52,211,153,.8);
  transform: translateY(-1px);
}
@media (max-width: 860px){
  .pd-topbar-inner{
    grid-template-columns: 1fr;
    justify-items: start;
  }
  .pd-topbar-nav{ width: 100%; justify-content: flex-start; }
  .pd-topbar-menu{ justify-content: flex-start; }
  .pd-topbar-actions{ width: 100%; justify-content: flex-start; }
}

/* 主体 */
.pd-main{ padding: 34px 0 64px; }

/* Hero */
.pd-hero{
  position: relative;
  border-radius: calc(var(--pd-radius) + 6px);
  border: 1px solid rgba(255,255,255,.10);
  background:
    radial-gradient(1200px 700px at 10% 10%, rgba(139,92,246,.22), transparent 55%),
    radial-gradient(900px 600px at 85% 10%, rgba(34,211,238,.18), transparent 50%),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--pd-shadow);
  overflow: hidden;
}
.pd-hero::before{
  /* 像素网格背景（轻量） */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: .20;
  pointer-events: none;
}
.pd-hero-inner{
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: clamp(16px, 3vw, 34px);
  padding: clamp(22px, 3.6vw, 44px);
}
@media (max-width: 880px){
  .pd-hero-inner{ grid-template-columns: 1fr; }
}

.pd-hero h1{
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -.6px;
  line-height: 1.1;
}
.pd-hero p{
  margin: 0 0 18px;
  color: var(--pd-muted);
  font-size: 14px;
  max-width: 62ch;
}
.pd-badges{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 18px;
}
.pd-badge{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.18);
  color: var(--pd-faint);
  font-size: 12px;
}
.pd-dot{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--pd-ok);
  box-shadow: 0 0 0 4px rgba(52,211,153,.16);
}
.pd-dot.pd-dot-alt{
  background: var(--pd-accent-2);
  box-shadow: 0 0 0 4px rgba(34,211,238,.16);
}

.pd-cta{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}
.pd-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06);
  color: var(--pd-text);
  font-weight: 600;
  letter-spacing: .2px;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}
.pd-btn:hover{
  text-decoration: none;
  transform: translateY(-1px);
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
}
.pd-btn.pd-btn-primary{
  border-color: rgba(139,92,246,.55);
  background: linear-gradient(135deg, rgba(139,92,246,.9), rgba(34,211,238,.7));
  box-shadow: 0 18px 40px rgba(0,0,0,.48);
}
.pd-btn.pd-btn-primary:hover{
  border-color: rgba(139,92,246,.75);
  background: linear-gradient(135deg, rgba(139,92,246,.95), rgba(34,211,238,.78));
}
.pd-btn small{
  font-weight: 600;
  color: rgba(255,255,255,.8);
}

/* 右侧“像素卡” */
.pd-panel{
  align-self: center;
  border-radius: var(--pd-radius);
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  padding: 16px;
}
.pd-panel h3{
  margin: 0 0 10px;
  font-size: 14px;
  letter-spacing: .2px;
}
.pd-panel .pd-kv{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  font-family: var(--pd-mono);
  font-size: 12px;
  color: var(--pd-muted);
}
.pd-panel .pd-kv strong{
  color: var(--pd-text);
  font-weight: 700;
}
.pd-mini-grid{
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
}
.pd-px{
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
}
.pd-px.pd-px-a{ background: rgba(139,92,246,.35); }
.pd-px.pd-px-b{ background: rgba(34,211,238,.28); }
.pd-px.pd-px-c{ background: rgba(52,211,153,.22); }

/* 分区 */
.pd-section{
  margin-top: 26px;
  padding-top: 10px;
}
.pd-section-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin: 0 0 14px;
}
.pd-section-head h2{
  margin: 0;
  font-size: 18px;
  letter-spacing: .2px;
}
.pd-section-head p{
  margin: 0;
  color: var(--pd-muted);
  font-size: 13px;
}

.pd-grid{
  display: grid;
  gap: var(--pd-gap);
  grid-template-columns: repeat(12, 1fr);
}
.pd-card{
  grid-column: span 4;
  border-radius: var(--pd-radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.05);
  padding: 16px 16px 14px;
}
@media (max-width: 980px){ .pd-card{ grid-column: span 6; } }
@media (max-width: 640px){ .pd-card{ grid-column: span 12; } }

.pd-card h3{
  margin: 0 0 8px;
  font-size: 14px;
}
.pd-card p{
  margin: 0;
  color: var(--pd-muted);
  font-size: 13px;
}

.pd-steps{
  border-radius: var(--pd-radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  overflow: hidden;
}
.pd-step{
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.pd-step:first-child{ border-top: 0; }
.pd-step .pd-step-no{
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--pd-mono);
  font-weight: 800;
  color: rgba(255,255,255,.9);
  background: linear-gradient(135deg, rgba(139,92,246,.72), rgba(34,211,238,.55));
  border: 1px solid rgba(255,255,255,.16);
}
.pd-step h4{
  margin: 0 0 4px;
  font-size: 14px;
}
.pd-step p{
  margin: 0;
  color: var(--pd-muted);
  font-size: 13px;
}

/* 内容区（后台可编辑） */
.pd-content{
  margin-top: 22px;
  border-radius: var(--pd-radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.16);
  padding: 18px 16px;
}
.pd-content > :first-child{ margin-top: 0; }
.pd-content > :last-child{ margin-bottom: 0; }
.pd-content .entry-title{
  margin: 0 0 10px;
  font-size: 16px;
}
.pd-content .entry-title a{ text-decoration: none; }
.pd-content .entry-title a:hover{ text-decoration: underline; }
.pd-content .entry-content{
  color: var(--pd-muted);
  font-size: 14px;
}
.pd-content .entry-content p{ margin: 0 0 12px; }
.pd-content .entry-content p:last-child{ margin-bottom: 0; }
.pd-content .entry-content a{ color: rgba(34,211,238,.95); }
.pd-content .entry-content code{
  font-family: var(--pd-mono);
  font-size: 0.95em;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.06);
}
.pd-content .entry-content pre{
  overflow: auto;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.26);
}
.pd-content .entry-content pre code{
  padding: 0;
  border: 0;
  background: transparent;
}

/* FAQ: details/summary */
.pd-content details{
  padding: 12px 0;
  border-top: 1px solid rgba(255,255,255,.08);
}
.pd-content details:first-child{ border-top: 0; }
.pd-content summary{
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  color: var(--pd-text);
  outline: none;
}
.pd-content summary::-webkit-details-marker{ display: none; }
.pd-content details[open] summary{ margin-bottom: 8px; }
.pd-content details p{ margin: 0; color: var(--pd-muted); }

/* 分页 */
.pd-content .navigation.pagination{ margin: 0; }
.pd-content .nav-links{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pd-content .page-numbers{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: var(--pd-muted);
  text-decoration: none;
}
.pd-content .page-numbers:hover{
  background: rgba(255,255,255,.07);
  color: var(--pd-text);
}
.pd-content .page-numbers.current{
  border-color: rgba(139,92,246,.55);
  background: rgba(139,92,246,.20);
  color: var(--pd-text);
}

/* Footer */
.pd-site-footer{
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 0 40px;
  color: var(--pd-muted);
  font-size: 12px;
}
.pd-footer-inner{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.pd-footer-inner a{ color: rgba(255,255,255,.76); }
.pd-footer-inner a:hover{ color: var(--pd-text); }