:root {
  --red: #c8161e; /* 中国红 */
  --red-dark: #9e1118;
  --gold: #e6b346; /* 金色 */
  --gold-dark: #c9952b;
  --blue: #1a4a8a; /* 青花蓝 */
  --ink: #2b2b2b; /* 墨色 */
  --bg: #faf6f0; /* 米白底 */
  --white: #ffffff;
  --gray: #888;
  --line: #ebe0d0;
  --bgColor: #fd8b2d;
}
html {
  scroll-behavior: smooth;
}

.container {
  width: 1200px;
  margin: 0 auto;
  padding: 0 30px;
  box-sizing: border-box;
}

/* ========================================
   主视觉 Banner
   ======================================== */
.hero {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: clip;
  background: #1a1a1a;
}

/* 背景视频：宽度=屏幕宽度，高度 1080，铺满容器 */
.hero__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  z-index: 1;
}

/* 封面图片：视频加载完成前显示，覆盖在视频上 */
.hero__poster {
  position: absolute;
  inset: 0;
  z-index: 2;
  transition: opacity 0.8s ease;
}
.hero__poster img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
/* 视频加载完成后隐藏封面 */
.hero__poster.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* 视频上的左右两侧 Logo (1200px 内居中) */
.hero__logos {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  height: 100%;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-end;
}

/* 当封面隐藏（视频开始播放）时，显示 Logo */
.hero__poster.is-hidden + .hero__logos {
  opacity: 1;
}
.hero__logo {
}
.hero__logo--left {
  position: absolute;
  top: 25px;
  left: 0;
}
.hero__logo--left::before {
  content: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.daka_l.png);
  display: block;
  transform: scale(0.6);
  transform-origin: top left;
}
.hero__logo--right {
  position: sticky;
  bottom: 25px;
  margin-bottom: 25px;
}
.hero__logo--right::before {
  content: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.daka_r.png);
  display: block;
  transform: scale(1.4);
  transform-origin: bottom right;
}

/* ========================================
   通用区块标题
   ======================================== */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}
/* ========================================
   城市打卡
   ======================================== */
.cities {
  padding: 60px 0 40px;
  background: #ecf1f9;
}

.city-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 1140px; /* 720 + 24 + 405 */
  margin: 0 auto;
}

.city-row {
  display: flex;
  gap: 15px;
}

.city-card {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.35s,
    box-shadow 0.35s;
}
.city-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.16);
}

/* 尺寸：宽卡 720×405，方卡 405×405 */
.city-card--wide {
  width: 720px;
  height: 405px;
}
.city-card--square {
  width: 405px;
  height: 405px;
}

/* 色块代替图片 */
.city-card__img {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue), #2b6fb0);
  transition: transform 0.5s ease;
}
.city-card:nth-child(2) .city-card__img {
  background: linear-gradient(135deg, #c8161e, #e6b346);
}
.city-card:nth-child(3) .city-card__img {
  background: linear-gradient(135deg, #3a7d44, #7fb069);
}
.city-card:nth-child(4) .city-card__img {
  background: linear-gradient(135deg, #e6b346, #d4912a);
}
.city-card:hover .city-card__img {
  transform: scale(1.08);
}

/* 文字遮罩层：默认隐藏，hover 显示 */
.city-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px 40px;
  color: #fff;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.65) 0%,
    rgba(0, 0, 0, 0.65) 100%
  );
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease,
    visibility 0.4s;
}
.city-card:hover .city-card__overlay {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.city-card__name {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 10px;
  color: #fff;
}
.city-card__text {
  font-size: 18px;
  line-height: 1.7;
  opacity: 0.92;
  margin-bottom: 16px;
  color: #fff;
}
.city-card__link {
  color: #fff;
  font-weight: 700;
  width: 90px;
  font-size: 14px;
  padding: 14px 16px;
  box-sizing: border-box;
  border-radius: 5px;
  background: var(--bgColor);
}

.cities__more {
  text-align: right;
  margin-top: 20px;
}
.btn-more {
  display: inline-block;
  color: #333;
}

/* ========================================
   特色主题
   ======================================== */
.themes {
  padding: 60px 0;
  background: var(--white);
}

/* 轮播容器：左图右文 */
.theme-swiper {
  position: relative;
  display: flex;
  align-items: stretch;
  margin: 0 auto;
}

/* 左侧图片区：800×450（Swiper 容器） */
.theme-swiper__images {
  position: relative;
  width: 800px;
  height: 450px;
  overflow: hidden;
  border-radius: 10px;
  flex-shrink: 0;
}
.theme-swiper__images .swiper-wrapper {
  height: 100%;
}

/* 每个 slide 撑满图片区 */
.theme-swiper__images .swiper-slide {
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
}
#themeImagesSwiper .swiper-slide a::after{
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.Icon-play.png) no-repeat center center;
  background-size: cover;
}
/* 右侧文字区：固定位置，内容切换 */
.theme-swiper__text {
  position: absolute;
  right: 0;
  top: 30px;
  width: 400px;
  /* min-height: 320px; */
  flex-shrink: 0;
  padding: 40px 50px 60px 50px;
  box-sizing: border-box;
  background: #4472c5;
  color: #fff;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10;
}

.theme-swiper__index {
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 2px;
  margin-bottom: 22px;
  font-weight: 700;
}
.theme-swiper__index i {
  font-style: normal;
  font-size: 28px;
}

/* 文字内容切换动画 */
.theme-swiper__name,
.theme-swiper__desc,
.theme-swiper__link {
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}
.theme-swiper.is-switching .theme-swiper__name,
.theme-swiper.is-switching .theme-swiper__desc,
.theme-swiper.is-switching .theme-swiper__link {
  opacity: 0;
  transform: translateY(12px);
}

.theme-swiper__name {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 18px;
  color: #fff;
}
.theme-swiper__desc {
  font-size: 16px;
  line-height: 1.8;
  color: #fff;
}
.theme-swiper__text .swiper-pagination {
  bottom: 36px;
  width: auto;
  left: 85px;
  font-size: 12px;
}

/* 左右切换按钮 */
.theme-swiper__btn {
  position: absolute;
  top: auto;
  bottom: 30px;
  width: 26px;
  height: 26px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  box-sizing: border-box;
  transition:
    background 0.3s,
    transform 0.3s;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}
.theme-swiper__btn.swiper-button-disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
.theme-swiper__btn:hover {
  transform: scale(1.1);
}
.theme-swiper__btn::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7px;
  height: 7px;
  border-top: 1px solid #fff;
  border-left: 1px solid #fff;
}
.theme-swiper__btn--prev {
  left: 50px;
}
.theme-swiper__btn--prev::before {
  transform: translate(-30%, -50%) rotate(-45deg);
}
.theme-swiper__btn--next {
  left: 120px; /* 800 - 28，按钮压在图片右边缘 */
}
.theme-swiper__btn--next::before {
  transform: translate(-70%, -50%) rotate(135deg);
}

/* ========================================
   打卡瞬间
   ======================================== */
.moments {
  padding: 40px 0 140px;
}

/* 轮播容器 */
.moments-carousel {
  position: relative;
}

/* 文字区域：位置固定，内容切换 */
.moments-text {
  min-height: 240px;
  box-sizing: border-box;
  background: #fff;
  width: 640px;
  border-radius: 20px;
  position: absolute;
  left: calc(50% - 320px);
  padding: 0 80px;
  display: flex;
  align-items: center;
  box-shadow: 0px 6px 30px 0px rgba(68, 114, 197, 0.2);
}
.moments-text::after {
  content: "";
  position: absolute;
  top: -7px;
  left: calc(50% - 7px);
  width: 14px;
  height: 14px;
  background: #fff;
  transform: rotate(45deg);
  background-size: cover;
}
.moments-text::before {
  content: "";
  position: absolute;
  top: calc(50% - 91px);
  left: calc(50% - 260.5px);
  width: 530px;
  height: 194px;
  z-index: 1;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.icon-1.png) no-repeat;
  background-size: cover;
}
.moments-text__name,
.moments-text__desc {
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}
.moments-carousel.is-switching .moments-text__name,
.moments-carousel.is-switching .moments-text__desc {
  opacity: 0;
  transform: translateY(10px);
}
.moments-text__name {
  font-size: 20px;
  color: #333;
  position: absolute;
  width: 100%;
  top: -60px;
  left: 0;
  text-align: center;
}
.moments-text__desc {
  text-indent: 32px;
  font-size: 16px;
  color: #333;
  line-height: 1.7;
  text-align: justify;
  position: relative;
  z-index: 10;
}
.moments-text .swiper-button-prev,
.moments-text .swiper-button-next {
  width: 40px;
  height: 40px;
  margin-top: -20px;
}
.moments-text .swiper-button-next {
  right: 0;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.right-2.png) no-repeat
    center center;
}
.moments-text .swiper-button-prev {
  left: 0;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.left-2.png) no-repeat
    center center;
}
.moments-swiper-outer .swiper-button-prev,
.moments-swiper-outer .swiper-button-next {
  width: 19px;
  height: 31px;
  margin-top: 0;
  top: 80px;
}
.moments-swiper-outer .swiper-button-next {
  right: 0;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.right-1.png) no-repeat
    center center;
}
.moments-swiper-outer .swiper-button-prev {
  left: 0;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.left-1.png) no-repeat
    center center;
}

/* 外层留 padding 给放大项空间，内层 swiper 负责裁切 */
.moments-swiper-outer {
  width: 1140px;
  margin: 0 auto;
  box-sizing: border-box;
  overflow: hidden;
  padding: 0 50px; /* 上下留白，容纳放大后超出部分 */
}

/* Swiper 容器 */
.moments-swiper {
  width: 100%;
  height: 100%;
  padding: 30px 0 100px; /* 上下留白，容纳放大后超出部分 */
  overflow: hidden;
}

/* 每个 slide：120×120 */
.moments-swiper .swiper-slide {
  width: 120px;
  height: 120px;
  border-radius: 50% 50%;
  cursor: pointer;
  overflow: hidden;
  transition:
    transform 0.4s ease,
    opacity 0.4s ease,
    box-shadow 0.4s ease;
}

/* 居中（当前）项放大到 160×160，z-index 确保盖在相邻项之上 */
.moments-swiper .swiper-slide-active {
  transform: scale(1.333);
  box-shadow: 0px 6px 10px 0px rgba(68, 114, 197, 0.31);
  z-index: 10;
}

/* ========================================
   行动号召
   ======================================== */
.cta {
  padding: 160px 0 140px;
  background: #fff;
}

/* 两列布局：左列 550，右列 580，间距 30，总宽 1160 */
.cta-grid {
  width: 959px;
  height: 650px;
  position: relative;
  margin: 0 auto;
  background: url(https://v2.cri.cn/resource/9704f78d-4cc6-4d62-b647-e8a4015ef43c/2026/activity/dakachina/pc/images.icon-2.jpg) no-repeat
    center center;
  background-size: cover;
}
/* 通用模块样式 */
.cta-block {
  position: absolute;
  font-weight: bold;
  color: #fff;
  transition:
    transform 0.35s,
    box-shadow 0.35s;
}
.cta-block a {
  display: flex;
  color: #fff;
  gap: 20px;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  flex-direction: column;
}
.cta-block__desc {
  font-style: italic;
}
.cta-block:hover {
  transform: translateY(-5px);
}
/* 各模块尺寸 */
.cta-block--0 {
  width: 460px;
  height: 260px;
  font-size: 130px;
  top: 0;
  left: 0;
  text-align: right;
}
.cta-block--1 {
  width: 490px;
  height: 180px;
  font-size: 130px;
  top: 0;
  left: 469px;
}
.cta-block--2 {
  width: 460px;
  height: 220px;
  font-size: 130px;
  top: 270px;
  left: 0;
}
.cta-block--3 {
  width: 490px;
  height: 260px;
  font-size: 130px;
  top: 190px;
  left: 469px;
}
.cta-block--4 {
  width: 460px;
  height: 150px;
  font-size: 130px;
  top: 500px;
  left: 0;
}
.cta-block--5 {
  width: 490px;
  height: 190px;
  font-size: 130px;
  top: 460px;
  left: 469px;
}
.cta-block--0 a {
  padding: 65px 65px 0 0;
  flex-direction: column-reverse;
  justify-content: flex-end;
}
.cta-block--0 .cta-block__desc {
  font-size: 96px;
}
.cta-block--1 a {
  padding: 0 60px;
  color: #4472c5;
  align-items: center;
  flex-direction: row;
}
.cta-block--1 .cta-block__desc {
  font-size: 84px;
}
.cta-block--1 .cta-block__title {
  font-size: 32px;
}
.cta-block--2 a {
  padding: 0 60px;
  justify-content: center;
  align-items: center;
  flex-direction: row;
}
.cta-block--2 .cta-block__desc {
  font-size: 80px;
}
.cta-block--2 .cta-block__title {
  font-size: 30px;
}
.cta-block--3 a {
  padding: 0 50px;
  justify-content: center;
}
.cta-block--3 .cta-block__desc {
  font-size: 80px;
}
.cta-block--3 .cta-block__title {
  font-size: 30px;
}
.cta-block--4 a {
  padding: 0 65px;
  color: #4472c5;
  align-items: center;
  flex-direction: row-reverse;
}
.cta-block--4 .cta-block__desc {
  font-size: 80px;
}
.cta-block--4 .cta-block__title {
  font-size: 26px;
}
.cta-block--5 a {
  padding: 0 35px;
    align-items: center;
    flex-direction: row-reverse;
}
.cta-block--5 .cta-block__desc {
  font-size: 72px;
}
.cta-block--5 .cta-block__title {
  font-size: 32px;
}

.cta-block__title {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.2;
  position: relative;
}
.cta-block__desc {
  position: relative;
}
/* ========================================
   动画
   ======================================== */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes bounce {
  0%,
  100% {
    transform: rotate(45deg) translate(0, 0);
  }
  50% {
    transform: rotate(45deg) translate(4px, 4px);
  }
}

/* 滚动渐入 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.1s ease,
    transform 0.1s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* PC 端固定布局，最小宽度 1200px，低于此出现横向滚动 */
body {
  min-width: 1200px;
}