:root {
  --color-trad-red: #8b0000;
  --color-trad-gold: #b8860b;
  --color-trad-black: #000000;
  --color-trad-cream: #f4f1de;
  --color-ink-gray: #2f2f2f;
  
  /* 五行元素色值 - 更高级的莫兰迪色系 */
  --color-element-metal: #D4AF37; /* 鎏金 */
  --color-element-wood: #556B2F;  /* 橄榄绿 */
  --color-element-water: #4682B4; /* 钢蓝 */
  --color-element-fire: #8B0000;  /* 深红 */
  --color-element-earth: #A0522D; /* 赭石 */
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.05);
}

body {
  background-color: var(--color-trad-cream);
  color: var(--color-trad-black);
  font-family: "Noto Serif SC", serif;
  background-image: url('https://www.transparenttextures.com/patterns/paper-fibers.png');
  background-attachment: fixed;
}

/* 极简元素风：侧边色条与文字装饰 */
.element-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.element-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 4px;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

/* 悬停时的水墨晕染背景 */
.element-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,0,0,0.03) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: -1;
  pointer-events: none;
}

.element-card:hover::after {
  opacity: 1;
}

.element-card.metal::before { background: var(--color-element-metal); }
.element-card.wood::before { background: var(--color-element-wood); }
.element-card.water::before { background: var(--color-element-water); }
.element-card.fire::before { background: var(--color-element-fire); }
.element-card.earth::before { background: var(--color-element-earth); }

.element-card:hover::before {
  width: 12px;
}

.element-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: 0 40px 80px rgba(0,0,0,0.08);
  background: white;
  border-color: rgba(0,0,0,0.1);
}

/* 侧边竖排元素名 */
.element-rail {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.65rem;
  letter-spacing: 0.6em;
  text-transform: uppercase;
  opacity: 0.15;
  position: absolute;
  right: 1.5rem;
  top: 2.5rem;
  font-weight: 800;
  transition: all 0.6s ease;
}

.element-card:hover .element-rail {
  opacity: 0.4;
  transform: translateY(10px);
}

/* 装饰性大数字 */
.card-number {
  font-family: 'Playfair Display', serif;
  font-size: 6rem;
  line-height: 1;
  opacity: 0.02;
  position: absolute;
  bottom: -1.5rem;
  right: -0.5rem;
  font-weight: 900;
  transition: all 0.8s ease;
}

.element-card:hover .card-number {
  opacity: 0.06;
  transform: scale(1.1) translateX(-10px);
}

/* 浮动装饰点 */
.floating-dot {
  position: absolute;
  width: 4px;
  height: 4px;
  background: currentColor;
  border-radius: 50%;
  opacity: 0.2;
  pointer-events: none;
}

/* 水墨边框效果 */
.ink-border {
  border: 20px solid transparent;
  border-image: url('https://www.transparenttextures.com/patterns/brush-stroke.png') 30 stretch;
  background-clip: padding-box;
  position: relative;
}

.brush-border {
  position: relative;
  padding: 2rem;
  background: white;
  box-shadow: 0 0 20px rgba(0,0,0,0.05);
}

.brush-border::before {
  content: "";
  position: absolute;
  top: -5px; left: -5px; right: -5px; bottom: -5px;
  border: 2px solid var(--color-trad-black);
  mask-image: radial-gradient(circle, black 50%, transparent 100%);
  opacity: 0.3;
  pointer-events: none;
}

/* 宣纸卷轴效果 */
.scroll-container {
  background: #fff;
  border-left: 15px solid #8b4513;
  border-right: 15px solid #8b4513;
  box-shadow: 5px 5px 15px rgba(0,0,0,0.2);
  position: relative;
}

.scroll-container::before, .scroll-container::after {
  content: "";
  position: absolute;
  left: -20px; right: -20px;
  height: 30px;
  background: #a0522d;
  border-radius: 15px;
}
.scroll-container::before { top: -15px; }
.scroll-container::after { bottom: -15px; }

/* 水墨晕染文字 */
.ink-wash-text {
  background: linear-gradient(45deg, #000 30%, #444 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.1));
}

.ink-wash-text-white {
  background: linear-gradient(45deg, #fff 30%, #ccc 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(2px 2px 4px rgba(255,255,255,0.1));
}

/* 竖排文字装饰 */
.vertical-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.5em;
  font-family: "Noto Serif SC", serif;
}

/* 印章效果 */
.seal {
  display: inline-block;
  border: 2px solid #b22222;
  color: #b22222;
  padding: 2px 5px;
  font-weight: bold;
  font-size: 0.8rem;
  line-height: 1;
  transform: rotate(-5deg);
  background: rgba(178, 34, 34, 0.05);
}

/* 墨迹装饰 */
.ink-splatter {
  position: absolute;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0,0,0,0.1) 0%, transparent 70%);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}

.bagua-rotate {
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 模拟毛笔笔触按钮 */
.btn-brush {
  position: relative;
  display: inline-block;
  background: #000;
  color: #fff;
  padding: 14px 48px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.btn-brush:hover {
  background: var(--color-trad-red);
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 10px 20px rgba(139, 0, 0, 0.2);
}

.btn-brush::after {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: 0.6s;
}

.btn-brush:hover::after {
  left: 100%;
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes inkSpread {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-fade-in-up {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

.animate-ink-spread {
  animation: inkSpread 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

/* 支付弹窗专用动画 */
@keyframes scan {
  0% { top: 0; }
  100% { top: 100%; }
}
.animate-scan {
  animation: scan 2s linear infinite;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* 太极加载器 */
.taiji-loader {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(to bottom, #000 50%, #fff 50%);
  position: relative;
  animation: rotate 3s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  box-shadow: 0 0 50px rgba(0,0,0,0.15);
  border: 2px solid #000;
}

.taiji-loader::before, .taiji-loader::after {
  content: "";
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  left: 25px;
}

.taiji-loader::before {
  top: 0;
  background: #000;
  box-shadow: inset 0 0 0 15px #fff, inset 0 0 0 20px #000;
}

.taiji-loader::after {
  bottom: 0;
  background: #fff;
  box-shadow: inset 0 0 0 15px #000, inset 0 0 0 20px #fff;
}

.gua-container {
  display: flex;
  gap: 8px;
  margin-top: 20px;
}

.gua-line {
  width: 20px;
  height: 3px;
  background: #000;
  opacity: 0.1;
  border-radius: 2px;
}

.gua-line.active {
  animation: guaPulse 1.5s ease-in-out infinite;
}

@keyframes guaPulse {
  0%, 100% { opacity: 0.1; transform: scaleY(1); }
  50% { opacity: 0.6; transform: scaleY(1.5); background: var(--color-trad-red); }
}

/* 移动端菜单重构 - 更加结构化与艺术感 */
#mobile-menu {
  padding: 15vh 10% 5vh;
  justify-content: flex-start;
  background-image: url('https://www.transparenttextures.com/patterns/paper-fibers.png');
  background-color: rgba(244, 241, 222, 0.98);
}

.mobile-menu-link {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  text-decoration: none;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  transform: translateX(-20px);
}

#mobile-menu.flex .mobile-menu-link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu-link .cn-text {
  font-size: 1.75rem;
  font-weight: 600;
  color: #1a1a1a;
  font-family: "Noto Serif SC", serif;
  transition: all 0.4s ease;
}

.mobile-menu-link .en-text {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-trad-red);
  opacity: 0.5;
  transition: all 0.4s ease;
}

.mobile-menu-link:hover .cn-text {
  color: var(--color-trad-red);
  transform: translateX(10px);
}

.mobile-menu-link:hover .en-text {
  opacity: 1;
  letter-spacing: 0.5em;
}

/* 移动端关闭按钮 */
#close-mobile-menu {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 200;
}

#close-mobile-menu span {
  position: absolute;
  width: 24px;
  height: 1px;
  background: #000;
  transition: all 0.3s ease;
}

#close-mobile-menu span:nth-child(1) { transform: rotate(45deg); }
#close-mobile-menu span:nth-child(2) { transform: rotate(-45deg); }

#close-mobile-menu:hover span {
  background: var(--color-trad-red);
  width: 30px;
}

/* 模拟毛笔笔触按钮 - 移动端适配 */
.btn-brush-mobile {
  margin-top: 3rem;
  width: 100%;
  text-align: center;
  padding: 1.25rem;
  background: #000;
  color: #fff;
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  border-radius: 2px;
  transition: all 0.4s ease;
}

.btn-brush-mobile:hover {
  background: var(--color-trad-red);
  transform: scale(1.02);
}

/* 滚动显示类 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟类 */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }