/* ===================================================================
   青云梯 (greencloudti.xyz) - STYLE 57: GOTHIC CATHEDRAL
   设计语言：Gothic Architecture / Cathedral / Stained Glass / Medieval Luxury / Sacred Geometry
   视觉人格：庄严、神秘、黑暗、华丽。“进入一座巨大古老的大教堂”
   核心准则：彩色只出现在“光”里，背景保持深黑 (Obsidian & Charcoal)
   =================================================================== */

:root {
  /* 基础调色板 BASE COLORS */
  --c-obsidian-deep: #060709;
  --c-obsidian-base: #0a0b10;
  --c-charcoal-dark: #12131a;
  --c-charcoal-stone: #181922;
  --c-charcoal-plaque: #1e202b;
  --c-stone-border: #2c2e3d;
  
  /* 羊皮纸色系 PARCHMENT */
  --c-parchment-pure: #fbf6ec;
  --c-parchment-base: #e8dfce;
  --c-parchment-muted: #9e9787;
  --c-parchment-dim: #6d6759;
  
  /* 古董金金箔 AN antique GOLD */
  --c-gold-bright: #fae8b4;
  --c-gold-base: #c5a059;
  --c-gold-rich: #dfb15b;
  --c-gold-dark: #7a5c21;
  --c-gold-glow: rgba(197, 160, 89, 0.45);
  --c-gold-border: rgba(197, 160, 89, 0.32);

  /* 彩绘玻璃圣光 STAINED GLASS LIGHT (彩色只出现在光与折射中) */
  --light-ruby: #dc2626;
  --light-sapphire: #2563eb;
  --light-emerald: #059669;
  --light-amethyst: #9333ea;
  
  --glow-ruby: rgba(220, 38, 38, 0.28);
  --glow-sapphire: rgba(37, 99, 235, 0.28);
  --glow-emerald: rgba(5, 150, 105, 0.28);
  --glow-amethyst: rgba(147, 51, 234, 0.28);

  /* 排版字体 TYPOGRAPHY */
  --font-gothic-serif: "Cinzel", "Baskerville", "Palatino Linotype", "Times New Roman", "Songti SC", "SimSun", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Songti SC", serif;
  
  --max-width: 1180px;
  --transition-cathedral: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置与深黑圣殿背景 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-parchment-base);
  background-color: var(--c-obsidian-deep);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--c-obsidian-deep);
  /* 哥特石砌廊柱纵向阴影与微光尘埃质感 */
  background-image: 
    radial-gradient(ellipse 90% 45% at 50% 0%, rgba(197, 160, 89, 0.08), transparent 70%),
    radial-gradient(circle at 15% 30%, rgba(37, 99, 235, 0.04), transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(220, 38, 38, 0.04), transparent 45%),
    repeating-linear-gradient(90deg, transparent, transparent 120px, rgba(255, 255, 255, 0.012) 120px, rgba(255, 255, 255, 0.012) 121px),
    linear-gradient(180deg, #07070b 0%, #0c0d13 50%, #050608 100%);
  background-attachment: fixed;
}

/* 链接样式 - 金色下划线悬停 */
a {
  color: var(--c-gold-rich);
  text-decoration: none;
  position: relative;
  transition: var(--transition-cathedral);
}

a:hover {
  color: var(--c-gold-bright);
  text-shadow: 0 0 8px var(--c-gold-glow);
}

/* 容器 */
.pd-container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.75rem;
  padding-right: 1.75rem;
}

/* ===================================================================
   CATHEDRAL HEADER & CHAPTER NAV
   =================================================================== */
.pd-header {
  background-color: rgba(10, 11, 16, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-gold-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.8);
}

.pd-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold-rich), transparent);
}

.pd-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.pd-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pd-brand__logo {
  height: 48px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(197, 160, 89, 0.25));
}

/* Cathedral Chapter 导航系统 */
.pd-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.pd-nav__link {
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--c-parchment-base);
  text-transform: uppercase;
  padding: 0.5rem 0.25rem;
  position: relative;
}

.pd-nav__link .chapter-num {
  color: var(--c-gold-base);
  font-size: 0.75rem;
  margin-right: 0.35rem;
}

.pd-nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, var(--c-gold-bright), var(--c-gold-dark));
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.pd-nav__link:hover::after,
.pd-nav__link.is-active::after {
  width: 100%;
}

.pd-nav__link:hover,
.pd-nav__link.is-active {
  color: var(--c-gold-bright);
}

.pd-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pd-menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--c-gold-border);
  color: var(--c-gold-base);
  padding: 0.5rem;
  border-radius: 2px;
  cursor: pointer;
}

.pd-menu-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* ===================================================================
   GOTHIC CTA BUTTON (极细金色边框 / 宝石光掠影 / 十字旋转)
   =================================================================== */
.pd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-family: var(--font-gothic-serif);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  padding: 0.75rem 1.85rem;
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  transition: var(--transition-cathedral);
  white-space: nowrap;
}

/* 按钮微型哥特饰物 */
.pd-btn__ornament {
  font-size: 0.85rem;
  color: var(--c-gold-rich);
  transition: transform 0.4s ease;
  display: inline-block;
}

.pd-btn--primary {
  background-color: var(--c-obsidian-base);
  color: var(--c-parchment-pure);
  border: 1px solid var(--c-gold-base);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.8), inset 0 0 8px rgba(0, 0, 0, 0.8);
}

/* 彩色玻璃光扫过效果 (Stained-glass reflection beam) */
.pd-btn--primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg, 
    transparent 0%, 
    rgba(220, 38, 38, 0.4) 25%, 
    rgba(37, 99, 235, 0.5) 50%, 
    rgba(147, 51, 234, 0.4) 75%, 
    transparent 100%
  );
  transform: skewX(-25deg);
  transition: left 0.75s ease;
  z-index: 1;
}

.pd-btn--primary:hover::before {
  left: 150%;
}

.pd-btn--primary:hover {
  border-color: var(--c-gold-bright);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(197, 160, 89, 0.6), 0 8px 26px rgba(0, 0, 0, 0.9);
  text-shadow: 0 0 8px rgba(250, 232, 180, 0.8);
}

.pd-btn--primary:hover .pd-btn__ornament {
  transform: rotate(90deg) scale(1.15);
  color: var(--c-gold-bright);
}

.pd-btn--outline {
  background: transparent;
  color: var(--c-parchment-base);
  border: 1px solid var(--c-stone-border);
}

.pd-btn--outline:hover {
  border-color: var(--c-gold-base);
  color: var(--c-gold-bright);
  background-color: rgba(28, 30, 42, 0.5);
  box-shadow: 0 0 12px rgba(197, 160, 89, 0.25);
}

.pd-btn--large {
  padding: 0.95rem 2.5rem;
  font-size: 1.05rem;
}

.pd-btn--full {
  width: 100%;
}

/* ===================================================================
   HERO: 巨大哥特拱门与神圣玫瑰窗 (POINTED ARCH & ROSE WINDOW)
   =================================================================== */
.pd-hero {
  padding: 5.5rem 0 5rem;
  position: relative;
  text-align: center;
  border-bottom: 1px solid var(--c-stone-border);
  overflow: hidden;
}

/* 顶部倾泻的神圣光束 (Sacred Light Rays) */
.pd-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 750px;
  height: 550px;
  background: radial-gradient(
    ellipse at 50% 20%, 
    rgba(223, 177, 91, 0.16) 0%, 
    rgba(37, 99, 235, 0.08) 35%, 
    rgba(220, 38, 38, 0.05) 55%, 
    transparent 80%
  );
  pointer-events: none;
  z-index: 1;
}

/* 玫瑰窗容器 (Rose Window Portal) */
.gothic-rose-portal {
  width: 140px;
  height: 140px;
  margin: 0 auto 2rem;
  position: relative;
  animation: rosePulse 8s infinite alternate ease-in-out;
}

.gothic-rose-portal img {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 25px rgba(223, 177, 91, 0.35));
}

@keyframes rosePulse {
  0% { transform: scale(1); filter: drop-shadow(0 0 18px rgba(197, 160, 89, 0.3)); }
  100% { transform: scale(1.03); filter: drop-shadow(0 0 32px rgba(220, 38, 38, 0.45)); }
}

/* 巨大拱门框架 (Gothic Pointed Arch Frame) */
.gothic-arch-wrapper {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  padding: 3rem 2.5rem 3.5rem;
  background-color: rgba(14, 15, 22, 0.7);
  border: 1px solid var(--c-gold-border);
  border-radius: 400px 400px 4px 4px;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.95), 
    inset 0 0 40px rgba(0, 0, 0, 0.8),
    0 0 30px rgba(197, 160, 89, 0.08);
}

/* 拱门外侧尖拱骨架微光 */
.gothic-arch-wrapper::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background-color: var(--c-obsidian-deep);
  border: 1px solid var(--c-gold-rich);
  transform: translateX(-50%) rotate(45deg);
}

.pd-hero__headline-tag {
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--c-gold-base);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
}

.pd-hero__title {
  font-family: var(--font-gothic-serif);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-parchment-pure);
  margin-bottom: 1.35rem;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.9);
  letter-spacing: 0.02em;
}

.pd-hero__subtitle {
  font-size: 1.15rem;
  color: var(--c-parchment-muted);
  line-height: 1.8;
  max-width: 660px;
  margin: 0 auto 2.25rem;
}

.pd-hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2.75rem;
}

/* 圣殿三柱立基 (Three Pillars) */
.pd-hero__specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--c-stone-border);
  padding-top: 2rem;
  text-align: left;
}

.pd-spec-pillar {
  padding: 1rem 1.25rem;
  background-color: rgba(20, 22, 31, 0.65);
  border: 1px solid var(--c-stone-border);
  border-left: 2px solid var(--c-gold-base);
  border-radius: 2px;
}

.pd-spec-pillar__num {
  font-family: var(--font-gothic-serif);
  font-size: 0.75rem;
  color: var(--c-gold-base);
  letter-spacing: 0.15em;
  margin-bottom: 0.35rem;
}

.pd-spec-pillar__title {
  font-family: var(--font-gothic-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
}

/* ===================================================================
   SECTION HEADERS & CATHEDRAL PROGRESSION
   =================================================================== */
.pd-section {
  padding: 5.5rem 0;
  position: relative;
}

.pd-section--chapel {
  background-color: rgba(14, 15, 21, 0.5);
  border-top: 1px solid var(--c-stone-border);
  border-bottom: 1px solid var(--c-stone-border);
}

.pd-section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.pd-section-chapter {
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--c-gold-base);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.pd-section-header__title {
  font-family: var(--font-gothic-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
}

.pd-section-header__desc {
  font-size: 1.05rem;
  color: var(--c-parchment-muted);
  line-height: 1.7;
}

/* ===================================================================
   CARDS AS "STONE PLAQUES" (石刻铭牌质感 / 罗马数字 / 金角雕花)
   =================================================================== */
.pd-stone-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.pd-stone-plaque {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 2.25rem 1.75rem;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7);
  transition: var(--transition-cathedral);
  overflow: hidden;
}

/* 四角金铆石碑细节 */
.pd-stone-plaque::before {
  content: "✦";
  position: absolute;
  top: 8px;
  left: 10px;
  font-size: 0.65rem;
  color: var(--c-gold-dark);
  opacity: 0.7;
}

.pd-stone-plaque::after {
  content: "✦";
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 0.65rem;
  color: var(--c-gold-dark);
  opacity: 0.7;
}

/* 卡片悬停：彩绘玻璃光影扫过 (Stained-glass sweep on stone) */
.pd-stone-plaque:hover {
  transform: translateY(-4px);
  border-color: var(--c-gold-base);
  box-shadow: 
    0 16px 40px rgba(0, 0, 0, 0.85),
    0 0 25px rgba(197, 160, 89, 0.2);
}

.pd-stone-plaque__roman {
  font-family: var(--font-gothic-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--c-gold-rich);
  line-height: 1;
  margin-bottom: 1.25rem;
  opacity: 0.85;
}

.pd-stone-plaque__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 0.75rem;
}

.pd-stone-plaque__text {
  font-size: 0.925rem;
  color: var(--c-parchment-muted);
  line-height: 1.7;
}

/* ===================================================================
   CHAPEL: 流媒体与 AI 专区 (SAPPHIRE & RUBY STAINED GLASS PANELS)
   =================================================================== */
.pd-chapel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.pd-chapel-panel {
  background-color: rgba(18, 19, 26, 0.85);
  border: 1px solid var(--c-stone-border);
  border-radius: 4px;
  padding: 2.75rem 2.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.8);
}

/* 蓝宝石与红宝石彩窗微光背底 */
.pd-chapel-panel--ruby::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, var(--glow-ruby), transparent 70%);
  pointer-events: none;
}

.pd-chapel-panel--sapphire::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, var(--glow-sapphire), transparent 70%);
  pointer-events: none;
}

.pd-chapel-panel__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pd-chapel-panel__desc {
  font-size: 0.95rem;
  color: var(--c-parchment-muted);
  margin-bottom: 1.75rem;
  line-height: 1.75;
}

.pd-stained-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.pd-stained-tag {
  background-color: rgba(26, 28, 38, 0.8);
  border: 1px solid var(--c-stone-border);
  color: var(--c-parchment-base);
  padding: 0.45rem 0.95rem;
  border-radius: 2px;
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  transition: var(--transition-cathedral);
}

.pd-stained-tag:hover {
  border-color: var(--c-gold-base);
  color: var(--c-gold-bright);
}

/* ===================================================================
   PRICING: THE CATHEDRAL TREASURY (TRIAL / STANDARD / LEGACY)
   =================================================================== */
.pd-treasury-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pd-treasury-card {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 2.75rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.85);
  transition: var(--transition-cathedral);
}

/* 核心推荐档位：STANDARD (完整彩绘玻璃背光与金箔尖拱) */
.pd-treasury-card--stained {
  border-color: var(--c-gold-rich);
  background: 
    radial-gradient(ellipse 90% 70% at 50% 10%, rgba(220, 38, 38, 0.12), transparent 60%),
    radial-gradient(ellipse 80% 60% at 50% 80%, rgba(37, 99, 235, 0.15), transparent 70%),
    var(--c-charcoal-stone);
  box-shadow: 
    0 16px 50px rgba(0, 0, 0, 0.9), 
    0 0 35px rgba(197, 160, 89, 0.28);
  transform: translateY(-6px);
}

.pd-treasury-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--c-gold-base);
  color: var(--c-obsidian-deep);
  font-family: var(--font-gothic-serif);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  padding: 0.35rem 1.25rem;
  border-radius: 2px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
  white-space: nowrap;
}

.pd-treasury-card__code {
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  color: var(--c-gold-base);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.pd-treasury-card__plan {
  font-family: var(--font-gothic-serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 0.35rem;
}

.pd-treasury-card__audience {
  font-size: 0.875rem;
  color: var(--c-parchment-muted);
  margin-bottom: 1.75rem;
}

.pd-treasury-card__cost {
  margin-bottom: 1.85rem;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.pd-treasury-card__currency {
  font-family: var(--font-gothic-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-gold-rich);
}

.pd-treasury-card__num {
  font-family: var(--font-gothic-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  line-height: 1;
}

.pd-treasury-card__unit {
  font-size: 0.9rem;
  color: var(--c-parchment-muted);
}

.pd-treasury-card__features {
  border-top: 1px solid var(--c-stone-border);
  padding-top: 1.5rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pd-treasury-card__item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.925rem;
  color: var(--c-parchment-base);
  margin-bottom: 0.85rem;
}

.pd-treasury-card__item svg {
  width: 16px;
  height: 16px;
  color: var(--c-gold-rich);
  flex-shrink: 0;
}

/* ===================================================================
   FAQ: 石碑折叠 (CRYPT ACCORDION)
   =================================================================== */
.pd-crypt-list {
  max-width: 860px;
  margin: 0 auto;
}

.pd-crypt-item {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.pd-crypt-item:hover,
.pd-crypt-item.is-open {
  border-color: var(--c-gold-base);
}

.pd-crypt-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-gothic-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-parchment-pure);
  cursor: pointer;
}

.pd-crypt-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--c-gold-base);
  flex-shrink: 0;
}

.pd-crypt-item.is-open .pd-crypt-icon {
  transform: rotate(180deg);
  color: var(--c-gold-bright);
}

.pd-crypt-answer {
  display: none;
  padding: 0 1.75rem 1.35rem;
  font-size: 0.95rem;
  color: var(--c-parchment-muted);
  line-height: 1.75;
  border-top: 1px solid var(--c-stone-border);
  padding-top: 1rem;
}

.pd-crypt-item.is-open .pd-crypt-answer {
  display: block;
}

/* ===================================================================
   FINAL CTA: 巨大的玫瑰窗与圣坛 (THE ALTAR & GRAND ROSE WINDOW)
   =================================================================== */
.pd-altar-cta {
  padding: 6.5rem 0 6rem;
  position: relative;
  text-align: center;
  background: 
    radial-gradient(circle at 50% 30%, rgba(220, 38, 38, 0.12), transparent 55%),
    radial-gradient(circle at 50% 70%, rgba(37, 99, 235, 0.12), transparent 60%),
    var(--c-obsidian-deep);
  border-top: 1px solid var(--c-stone-border);
  border-bottom: 1px solid var(--c-stone-border);
  overflow: hidden;
}

.pd-grand-rose {
  width: 180px;
  height: 180px;
  margin: 0 auto 2.25rem;
  animation: grandGlow 6s infinite alternate ease-in-out;
}

.pd-grand-rose img {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 35px rgba(223, 177, 91, 0.45));
}

@keyframes grandGlow {
  0% { filter: drop-shadow(0 0 25px rgba(197, 160, 89, 0.4)); transform: scale(1); }
  100% { filter: drop-shadow(0 0 45px rgba(220, 38, 38, 0.55)); transform: scale(1.05); }
}

.pd-altar-cta__tag {
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  color: var(--c-gold-rich);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.pd-altar-cta__title {
  font-family: var(--font-gothic-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 1.25rem;
}

.pd-altar-cta__desc {
  font-size: 1.1rem;
  color: var(--c-parchment-muted);
  max-width: 620px;
  margin: 0 auto 2.5rem;
}

/* ===================================================================
   ARTICLE & CONTENT PAGES (中世纪手抄本古典质感)
   =================================================================== */
.pd-content-layout {
  padding: 4rem 0 6rem;
}

.pd-content-container {
  max-width: 880px;
  margin: 0 auto;
}

.pd-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-gothic-serif);
  font-size: 0.85rem;
  color: var(--c-parchment-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}

.pd-breadcrumb a {
  color: var(--c-parchment-muted);
}

.pd-breadcrumb a:hover {
  color: var(--c-gold-bright);
}

.pd-article-header {
  border-bottom: 1px solid var(--c-stone-border);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}

.pd-article-title {
  font-family: var(--font-gothic-serif);
  font-size: 2.35rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  line-height: 1.35;
  margin-bottom: 1.25rem;
}

.pd-article-meta {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.875rem;
  color: var(--c-gold-base);
  font-family: var(--font-gothic-serif);
  letter-spacing: 0.05em;
}

.pd-article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--c-parchment-base);
}

.pd-article-body p {
  margin-bottom: 1.5rem;
}

.pd-article-body h2 {
  font-family: var(--font-gothic-serif);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--c-stone-border);
}

.pd-article-body h3 {
  font-family: var(--font-gothic-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--c-gold-rich);
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
}

.pd-article-body ul,
.pd-article-body ol {
  margin-bottom: 1.75rem;
  padding-left: 1.75rem;
}

.pd-article-body li {
  margin-bottom: 0.6rem;
}

.pd-callout {
  background-color: rgba(22, 24, 34, 0.85);
  border-left: 3px solid var(--c-gold-base);
  border-radius: 2px;
  padding: 1.35rem 1.65rem;
  margin: 2rem 0;
  border-top: 1px solid var(--c-stone-border);
  border-right: 1px solid var(--c-stone-border);
  border-bottom: 1px solid var(--c-stone-border);
}

.pd-callout__title {
  font-family: var(--font-gothic-serif);
  font-weight: 700;
  color: var(--c-gold-bright);
  margin-bottom: 0.5rem;
}

.pd-table-wrap {
  overflow-x: auto;
  margin: 2.25rem 0;
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
}

.pd-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

.pd-table th {
  background-color: var(--c-charcoal-stone);
  color: var(--c-gold-bright);
  font-family: var(--font-gothic-serif);
  font-weight: 600;
  padding: 0.95rem 1.2rem;
  border-bottom: 1px solid var(--c-stone-border);
}

.pd-table td {
  padding: 0.95rem 1.2rem;
  border-bottom: 1px solid var(--c-stone-border);
  color: var(--c-parchment-base);
}

.pd-article-faq {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 2rem;
  margin: 2.75rem 0;
}

.pd-article-faq__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--c-gold-bright);
  margin-bottom: 1.5rem;
}

.pd-article-faq__item {
  margin-bottom: 1.5rem;
}

.pd-article-faq__item:last-child {
  margin-bottom: 0;
}

.pd-article-faq__q {
  font-family: var(--font-gothic-serif);
  font-weight: 600;
  color: var(--c-parchment-pure);
  margin-bottom: 0.45rem;
}

.pd-article-faq__a {
  font-size: 0.95rem;
  color: var(--c-parchment-muted);
}

.pd-article-cta-box {
  background: 
    radial-gradient(circle at 50% 20%, rgba(197, 160, 89, 0.12), transparent 70%),
    var(--c-charcoal-dark);
  border: 1px solid var(--c-gold-border);
  border-radius: 2px;
  padding: 2.5rem;
  text-align: center;
  margin: 3.25rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

.pd-article-cta-box__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 0.75rem;
}

.pd-article-cta-box__desc {
  font-size: 1rem;
  color: var(--c-parchment-muted);
  margin-bottom: 1.75rem;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.pd-related-posts {
  border-top: 1px solid var(--c-stone-border);
  padding-top: 2.75rem;
  margin-top: 3.25rem;
}

.pd-related-posts__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 1.5rem;
}

.pd-related-posts__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.pd-related-card {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 1.5rem;
  transition: var(--transition-cathedral);
}

.pd-related-card:hover {
  border-color: var(--c-gold-base);
  box-shadow: 0 4px 18px rgba(197, 160, 89, 0.2);
}

.pd-related-card__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-parchment-pure);
  margin-bottom: 0.5rem;
}

.pd-related-card__desc {
  font-size: 0.875rem;
  color: var(--c-parchment-muted);
}

/* 指南列表页 GUIDES LISTING */
.pd-guides-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 2.75rem 0 4.5rem;
}

.pd-guide-card {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.7);
  transition: var(--transition-cathedral);
}

.pd-guide-card:hover {
  border-color: var(--c-gold-base);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(197, 160, 89, 0.2);
}

.pd-guide-card__tag {
  font-family: var(--font-gothic-serif);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-gold-rich);
  margin-bottom: 0.6rem;
  letter-spacing: 0.1em;
}

.pd-guide-card__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  margin-bottom: 0.85rem;
  line-height: 1.45;
}

.pd-guide-card__desc {
  font-size: 0.925rem;
  color: var(--c-parchment-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.pd-guide-card__meta {
  font-family: var(--font-gothic-serif);
  font-size: 0.825rem;
  color: var(--c-parchment-dim);
  border-top: 1px solid var(--c-stone-border);
  padding-top: 0.85rem;
}

/* 网站地图与条款通用页 */
.pd-page-content {
  background-color: var(--c-charcoal-dark);
  border: 1px solid var(--c-stone-border);
  border-radius: 2px;
  padding: 3rem 2.5rem;
  margin: 2rem 0 4.5rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.8);
}

.pd-sitemap-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.pd-sitemap-col__title {
  font-family: var(--font-gothic-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-gold-bright);
  margin-bottom: 1.25rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--c-stone-border);
}

.pd-sitemap-links li {
  margin-bottom: 0.75rem;
}

/* ===================================================================
   FOOTER (大教堂地基与底殿)
   =================================================================== */
.pd-footer {
  margin-top: auto;
  background-color: var(--c-obsidian-base);
  border-top: 1px solid var(--c-gold-border);
  padding: 4.5rem 0 2.5rem;
  position: relative;
}

.pd-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold-rich), transparent);
}

.pd-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.pd-footer__brand-title {
  font-family: var(--font-gothic-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-gold-rich);
  margin-bottom: 0.85rem;
  letter-spacing: 0.05em;
}

.pd-footer__brand-desc {
  font-size: 0.925rem;
  color: var(--c-parchment-muted);
  line-height: 1.7;
  max-width: 340px;
}

.pd-footer__col-title {
  font-family: var(--font-gothic-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-parchment-pure);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.pd-footer__links li {
  margin-bottom: 0.7rem;
}

.pd-footer__links a {
  color: var(--c-parchment-muted);
  font-size: 0.9rem;
}

.pd-footer__links a:hover {
  color: var(--c-gold-bright);
}

.pd-footer__bottom {
  border-top: 1px solid var(--c-stone-border);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--c-parchment-dim);
}

/* ===================================================================
   MOBILE STICKY CTA
   =================================================================== */
.pd-mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(10, 11, 16, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--c-gold-border);
  padding: 0.85rem 1.25rem;
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.8);
}

.pd-mobile-sticky-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.pd-mobile-sticky-cta__brand {
  font-family: var(--font-gothic-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-gold-bright);
}

.pd-mobile-sticky-cta__tip {
  font-size: 0.775rem;
  color: var(--c-parchment-muted);
}

/* ===================================================================
   RESPONSIVE DESIGN (响应式断点)
   =================================================================== */
@media (max-width: 1024px) {
  .pd-stone-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pd-guides-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pd-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .pd-nav {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background-color: var(--c-obsidian-base);
    border-bottom: 1px solid var(--c-gold-border);
    flex-direction: column;
    padding: 1.75rem;
    gap: 1.25rem;
    align-items: flex-start;
  }

  .pd-nav.is-open {
    display: flex;
  }

  .pd-menu-toggle {
    display: block;
  }

  .pd-hero {
    padding: 3.5rem 0 3rem;
  }

  .gothic-arch-wrapper {
    padding: 2.25rem 1.25rem 2.5rem;
    border-radius: 200px 200px 4px 4px;
  }

  .pd-hero__title {
    font-size: 2rem;
  }

  .pd-hero__subtitle {
    font-size: 1rem;
  }

  .pd-hero__specs {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .pd-stone-grid,
  .pd-chapel-grid,
  .pd-treasury-grid,
  .pd-related-posts__grid,
  .pd-guides-grid,
  .pd-sitemap-list {
    grid-template-columns: 1fr;
  }

  .pd-footer__grid {
    grid-template-columns: 1fr;
  }

  .pd-article-title {
    font-size: 1.85rem;
  }

  .pd-mobile-sticky-cta {
    display: block;
  }

  body {
    padding-bottom: 74px;
  }
}