/* ============================================
   Application Section - 精确还原 Figma 设计
   平行四边形卡片 + hover 渐变叠层 + 六边形箭头
   文字用 vw clamp 随视口等比缩放 (1920px 下与设计稿 1:1)
   ============================================ */

.application {
  position: relative;
  width: 100%;
  background: var(--color-soft-blue);
  overflow: hidden;
  padding-top: 144px;
}

/* 隐藏的 SVG defs (箭头 symbol) */
.application__defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* --- 卡片轮播容器 --- */
.application__cards-wrapper {
  position: relative;
  overflow: hidden;
  width: 109.4%;
  margin-left: -8.4%;
}

/* --- 卡片行 --- */
.application__cards {
  position: relative;
  display: flex;
  width: 300%;
  z-index: 2;
  transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
  opacity: 0;
  transform: translateX(180px);
}

.application__cards.in-view {
  animation: app-cards-enter 1.2s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

@keyframes app-cards-enter {
  from {
    opacity: 0;
    transform: translateX(180px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.application__card {
  position: relative;
  display: block;                    /* a 标签需 block 才能应用宽/高 */
  text-decoration: none;
  color: inherit;
  flex: 0 0 14.07%;
  aspect-ratio: 887 / 651;
  margin-left: -4.44%;
  background: var(--color-placeholder);
  clip-path: polygon(34.56% 0, 98.58% 0, 65.04% 100%, 1.41% 100%);
  cursor: pointer;
  overflow: hidden;
  /* 让 hover 内容随卡片宽度缩放 */
  container-type: inline-size;
  /* 防止 clip-path hover 闪动 */
  backface-visibility: hidden;
  transform: translateZ(0);
  will-change: opacity;
}

.application__card:first-child,
.application__card:nth-child(3n+1) {
  margin-left: 0;
}

.application__card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- hover 渐变叠层 (#1976AC 上30%->下100%, 整体 0.75 透明) --- */
.application__hover-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
              rgba(25, 118, 172, 0.3) 0%,
              rgba(25, 118, 172, 1) 100%);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
  pointer-events: none;
}

/* --- hover 内容 (箭头 + 文字, 默认隐藏) --- */
.application__hover-content {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
  pointer-events: none;
}

.application__card:hover .application__hover-bg,
.application__card.is-active .application__hover-bg {
  opacity: 0.75;
}

.application__card:hover .application__hover-content,
.application__card.is-active .application__hover-content {
  opacity: 1;
}

/* --- 六边形箭头按钮 --- */
.application__arrow {
  position: absolute;
  top: 37.8%;
  left: 46.2%;
  width: 7.44cqw;
  height: 7.44cqw;
  display: block;
  filter: drop-shadow(0 4px 7.5px rgba(58, 168, 217, 0.15));
}

.application__arrow use {
  width: 100%;
  height: 100%;
}

/* --- hover 文字 --- */
.application__hover-text {
  position: absolute;
  top: 70%;                        /* 上移：给自动换行的多行留空间 */
  left: calc(50% - 50px);
  transform: translateX(-50%);
  max-width: 80%;                  /* 限定宽度：长文字在斜切卡内自动换行，不溢出 */
  font-family: var(--font-primary);
  font-size: 5.41cqw;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.96px;
  color: var(--color-white);
  text-align: center;
}

/* --- 绿色装饰块 (斜梯形, 右下叠在 app-3 上) --- */
.application__green-block {
  position: absolute;
  bottom: 0;
  width: 7.14%;
  aspect-ratio: 150 / 131;
  background: var(--color-secondary);
  clip-path: polygon(38.67% 0, 99.67% 0, 60.33% 100%, 0 100%);
  z-index: 3;
  pointer-events: none;
}

.application__green-block--1 {
  right: 9.17%;
}

.application__green-block--2 {
  right: 4.41%;
}

/* --- 轮播箭头按钮 --- */
.application__nav {
  position: absolute;
  bottom: 0;
  width: 7.14%;
  aspect-ratio: 150 / 131;
  background: var(--color-secondary);
  clip-path: polygon(38.67% 0, 99.67% 0, 60.33% 100%, 0 100%);
  border: none;
  cursor: pointer;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: opacity 0.3s ease;
}

.application__nav svg {
  width: 30%;
  height: 30%;
}

.application__nav:disabled {
  cursor: not-allowed;
}

.application__nav:hover:not(:disabled) {
  background-color: var(--color-green-accent);
}

.application__nav--prev {
  right: calc(9.17% + 10px);
}

.application__nav--next {
  right: calc(4.41% + 10px);
}

/* --- 内容区 (居中容器内) --- */
.application__inner {
  position: relative;
  max-width: 1920px;
  margin: 0 auto;
  padding: 0 0 153px;
}

.application__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 100px;
  padding: 0 10.3%;
  z-index: 3;
}

.application__words {
  max-width: 1091px;
}

/* 文字用 vw clamp: 1920px 下与设计稿 1:1, 更窄视口等比缩小 */
.application__title {
  font-family: var(--font-primary);
  font-size: 56px;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  margin: 0;
}

.application__subtitle {
  font-family: var(--font-primary);
  font-size: clamp(0.875rem, 1.6667vw, 2rem);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: -0.02em;
  color: #666666;
  margin: 0;
  white-space: nowrap;
}

/* --- Learn more 按钮 (六边形药丸, 白底蓝字, 同 Hero/About CTA 形状) --- */
.application__learn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: 58px;
  padding: 0 28px;
  flex-shrink: 0;
  text-decoration: none;
  transition: transform var(--duration-micro) var(--ease-emphasized);
}

.application__learn-shape {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.application__learn-shape path {
  transition: fill var(--duration-base) var(--ease-standard);
}

.application__learn-text {
  position: relative;
  z-index: 1;
  font-family: var(--font-primary);
  font-size: clamp(1rem, 0.08vw + 0.98rem, 1.125rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-primary);
  white-space: nowrap;
  transition: color var(--duration-base) var(--ease-standard);
}

.application__learn:hover .application__learn-shape path {
  fill: var(--color-primary);
}

.application__learn:hover .application__learn-text {
  color: var(--color-white);
}

.application__learn:active {
  transform: scale(0.96);
}

/* ============================================
   Responsive Application
   ============================================ */

@media (max-width: 1200px) {
  .application { padding-top: 100px; }

  .application__content {
    margin-top: 72px;
    padding: 0 7%;
  }

  .application__inner { padding-bottom: 110px; }
}

@media (max-width: 768px) {
  .application {
    padding-top: 70px;
  }

  .application__title {
    font-size: clamp(1.5rem, 0.81vw + 1.31rem, 2.75rem);
    line-height: 1.18;
  }

  .application__learn {
    width: auto;
    height: 50px;
    padding: 0 24px;
  }

  .application__learn-text {
    font-size: 1rem;
  }

  .application__cards-wrapper {
    padding: 0;
    overflow: visible;       /* 让滚动容器可见 */
    width: 100%;
    margin-left: 0;
  }

  /* 卡片横向一行滑动 */
  .application__cards {
    flex-direction: row;
    flex-wrap: nowrap;
    width: 100%;
    margin-left: 0;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    padding: 0 4%;
    transform: none !important;
    /* 隐藏滚动条 */
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  .application__cards::-webkit-scrollbar {
    display: none;
  }

  .application__card {
    flex: 0 0 58vw;
    width: 58vw;
    margin-left: -8vw;     /* 梯形卡片加大重叠 */
    scroll-snap-align: center;
    aspect-ratio: 887 / 651;
    transform: scale(1.2);
    transform-origin: center center;
  }

  .application__card:first-child {
    margin-left: 0;
  }

  .application__card:nth-child(3n+1) {
    margin-left: -8vw;   /* 移动端取消每3张重置，统一负 margin */
  }

  .application__hover-text {
    left: calc(50% - 30px);  /* 文字右移 20px */
  }

  .application__hover-bg {
    opacity: 0.75;
  }

  .application__hover-content {
    opacity: 1;
  }

  .application__arrow { display: none; }

  .application__green-block { display: none; }

  /* 移动端显示左右箭头，固定在卡片区域两侧 */
  .application__nav {
    display: flex;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    aspect-ratio: auto;
    clip-path: none;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 5;
    bottom: auto;
  }

  .application__nav svg {
    width: 20px;
    height: 20px;
  }

  .application__nav svg path {
    stroke: #666666;
    fill: none;
  }

  .application__nav--prev {
    left: 14px;
    right: auto;
  }

  .application__nav--next {
    right: 14px;
  }

  .application__nav:hover:not(:disabled),
  .application__nav:active {
    background: rgba(255, 255, 255, 0.85);
  }

  .application__content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 28px;
    margin-top: 56px;
    padding: 0 6%;
  }

  .application__subtitle {
    white-space: normal;
  }

  .application__title {
    margin-bottom: 8px;  /* 标题与描述拉开 10px */
  }

  .application__inner { padding-bottom: 80px; }
}

@media (max-width: 576px) {
  .application { padding-top: 56px; }

  .application__title {
    font-size: clamp(1.625rem, 8vw, 2.25rem);
    line-height: 1.18;
  }

  .application__learn {
    width: auto;
    height: 44px;
    padding: 0 20px;
  }

  .application__learn-text {
    font-size: clamp(0.8125rem, 0.04vw + 0.8rem, 0.875rem);
  }

  .application__cards { gap: 0; }

  .application__content {
    gap: 22px;
    margin-top: 40px;
    padding: 0 5%;
  }

  .application__inner { padding-bottom: 64px; }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .application__hover-bg,
  .application__hover-content,
  .application__learn,
  .application__learn-shape path,
  .application__learn-text {
    transition: none;
  }
}

/* ---- PC（≥993）：描述 24px / 400 / 36px，与上方标题间距 +10px（≤992 移动端原样未动） ---- */
@media (min-width: 993px) {
  .application__subtitle {
    font-size: 24px;
    font-weight: 400;
    line-height: 36px;
    margin-top: 10px;
  }
}

/* ---- 窄 PC 溢出修复（993–1200）：副标题基础档为 white-space:nowrap（约 1000px 宽），
   同排「了解更多」按钮约 225px，而 .application__content 可用宽在 993 视口仅约 789px
   → 该区间会溢出（外层 .application overflow:hidden 裁切）。故仅在 993–1200 放开换行；
   ≥1201 宽屏维持原单行不换行，≤992 移动端原样未动。 ---- */
@media (min-width: 993px) and (max-width: 1200px) {
  .application__subtitle {
    white-space: normal;
  }
}