/* =========================================
   虾米创作 — 公共自定义样式
   适用于 index.html 和 learning.html
   ========================================= */

/* 传趣体（ChuanQu）— OFL 开源字体，用于 banner 大标题 */
@font-face {
  font-family: 'ChuanQu';
  src: url('../fonts/ChuanQu-Regular.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

.font-chuanqu {
  font-family: 'ChuanQu', 'Plus Jakarta Sans', 'PingFang SC', sans-serif;
}

/* Material Symbols 图标变量默认值 */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* 编辑风格阴影 */
.editorial-shadow {
  box-shadow: 0 20px 40px rgba(49, 47, 34, 0.06);
}

/* 玻璃磨砂导航栏 */
.glass-nav {
  backdrop-filter: blur(20px);
  background-color: rgba(252, 246, 226, 0.9);
}

/* 手机顶栏页面切换：红字+下划线，无白底，自定义小箭头 */
select.nav-page-switch {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23ba0018'/%3E%3C/svg%3E") no-repeat right 0 center;
  padding-right: 1.1rem;
  box-shadow: none;
  color: #ba0018;
  -webkit-tap-highlight-color: transparent;
}

select.nav-page-switch:focus {
  outline: none;
}

/* 主品牌渐变（红→珊瑚红） */
.momentum-gradient {
  background: linear-gradient(135deg, #bb0004 0%, #ff7765 100%);
}

/* 灵感卡片倾斜效果 */
.asymmetric-nudge {
  transform: rotate(-2deg);
}

/* 合作平台无限滚动跑马灯 */
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  will-change: transform;
  animation: marquee 28s linear infinite;
}
.marquee-track:hover {
  animation-play-state: paused;
}
.marquee-wrap {
  overflow-x: hidden;
  overflow-y: visible;
  width: 100%;
  padding: 0.8rem 0;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}
.marquee-item {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 9999px;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 3.5rem;   /* 统一右间距，确保头尾无缝 */
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.marquee-item:hover {
  transform: scale(1.3);
}
.marquee-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.marquee-item-kdp {
  width: auto;
  height: auto;
  border-radius: 0;
  overflow: visible;
}
.marquee-logo-kdp {
  height: 3rem;
  width: auto;
  object-fit: contain;
}