* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  color: #1E293B;
  background-color: #F8FAFC;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 640px) {
  .container {
    padding: 0 24px;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 32px;
  }
}

/* 自定义工具类 */
.text-shadow {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.transition-all-300 {
  transition: all 0.3s ease;
}

.content-auto {
  content-visibility: auto;
}

/* 导航栏样式 - BEM命名规范 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

@media (min-width: 768px) {
  .navbar__inner {
    height: 80px;
  }
}

.navbar__logo {
  display: flex;
  align-items: center;
}

.navbar__logo-img {
  height: 40px;
  width: auto;
}

@media (min-width: 768px) {
  .navbar__logo-img {
    height: 44px;
  }
}

.navbar__desktop-menu {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 768px) {
  .navbar__desktop-menu {
    display: flex;
  }
}

.navbar__menu-link {
  font-weight: 500;
  color: #475569;
  transition: color 0.3s ease;
  text-decoration: none;
}

.navbar__menu-link--active {
  color: #1E293B;
}

.navbar__menu-link:hover {
  color: #165DFF;
}

.navbar__desktop-buttons {
  display: none;
  align-items: center;
  gap: 16px;
}

@media (min-width: 768px) {
  .navbar__desktop-buttons {
    display: flex;
  }
}

.navbar__button {
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.navbar__button--primary {
  background-color: #165DFF;
  color: #FFFFFF;
}

.navbar__button--primary:hover {
  background-color: rgba(22, 93, 255, 0.9);
}

.navbar__button--secondary {
  background-color: #FF7D00;
  color: #FFFFFF;
}

.navbar__button--secondary:hover {
  background-color: rgba(255, 125, 0, 0.9);
}

.navbar__menu-toggle {
  display: block;
  color: #334155;
  background: none;
  border: none;
  outline: none;
  cursor: pointer;
  transition: color 0.3s ease;
}

@media (min-width: 768px) {
  .navbar__menu-toggle {
    display: none;
  }
}

.navbar__menu-toggle:hover {
  color: #165DFF;
}

.navbar__menu-toggle-icon {
  font-size: 24px;
}

.navbar__mobile-menu {
  display: none;
  background-color: #FFFFFF;
  border-top: 1px solid #E2E8F0;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.navbar__mobile-menu--show {
  display: block;
}

.navbar__mobile-menu-inner {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.navbar__mobile-link {
  display: block;
  padding: 8px 0;
  font-weight: 500;
  color: #475569;
  text-decoration: none;
  transition: color 0.3s ease;
}

.navbar__mobile-link--active {
  color: #1E293B;
}

.navbar__mobile-link:hover {
  color: #165DFF;
}

.navbar__mobile-buttons {
  display: flex;
  gap: 12px;
  padding-top: 8px;
}

.navbar__mobile-button {
  flex: 1;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
}

/* 英雄区样式 */
.hero {
  padding-top: 64px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-image: url('https://picsum.photos/1920/800');
}

@media (min-width: 768px) {
  .hero {
    padding-top: 80px;
  }
}

.hero__inner {
  padding: 80px 0;
  max-width: 1280px;
  padding-left: 16px;
  padding-right: 16px;
}

@media (min-width: 768px) {
  .hero__inner {
    padding: 128px 200px;
  }
}

.hero__content {
  max-width: 700px;
}

.hero__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: #FFFFFF;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero__desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #FFFFFF;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 32px;
  max-width: 768px;
}

.hero__buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 640px) {
  .hero__buttons {
    flex-direction: row;
    gap: 16px;
  }
}

.hero__button {
  padding: 12px 32px;
  border-radius: 6px;
  font-weight: 500;
  color: #FFFFFF;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.hero__button--android {
  background-color: #165DFF;
}

.hero__button--android:hover {
  background-color: rgba(22, 93, 255, 0.9);
}

.hero__button--ios {
  background-color: #1E293B;
}

.hero__button--ios:hover {
  background-color: #334155;
}

.hero__button-icon {
  margin-right: 8px;
}

/* 交易产品样式 */
.trading-products {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.trading-products__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.trading-products__header {
  text-align: center;
  max-width: 576px;
  margin: 0 auto 48px;
}

.trading-products__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.trading-products__desc {
  font-size: 18px;
  color: #475569;
}

.trading-products__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (min-width: 640px) {
  .trading-products__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .trading-products__grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.trading-products__item {
  padding: 24px;
  background-color: #F1F5F9;
  border-radius: 8px;
  text-align: center;
  transition: background-color 0.3s ease;
}

.trading-products__item:hover {
  background-color: #E2E8F0;
}

.trading-products__icon {
  font-size: 48px;
  color: #165DFF;
  margin-bottom: 12px;
}

.trading-products__name {
  font-weight: 500;
}

/* 功能亮点样式 */
.features {
  padding: 80px 0;
  background-color: #F9FAFB;
}

.features__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.features__header {
  text-align: center;
  max-width: 576px;
  margin: 0 auto 64px;
}

.features__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.features__card {
  background-color: #FFFFFF;
  padding: 32px;
  border-radius: 8px;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.features__card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.features__card-header {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.features__card-icon {
  font-size: 48px;
  color: #165DFF;
  margin-right: 16px;
}

.features__card-title {
  font-size: 24px;
  font-weight: 700;
}

.features__card-desc {
  color: #475569;
}

/* 开户流程样式 */
.account-opening {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.account-opening__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.account-opening__header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 64px;
}

.account-opening__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.account-opening__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

@media (min-width: 640px) {
  .account-opening__steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .account-opening__steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .account-opening__steps {
    grid-template-columns: repeat(6, 1fr);
  }
}

.account-opening__step {
  text-align: center;
}

.account-opening__step-number {
  width: 48px;
  height: 48px;
  background-color: #165DFF;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 16px;
}

.account-opening__step-title {
  font-weight: 500;
  margin-bottom: 8px;
}

.account-opening__button-wrap {
  text-align: center;
}

.account-opening__button {
  padding: 12px 32px;
  border-radius: 6px;
  background-color: #FF7D00;
  color: #FFFFFF;
  font-weight: 500;
  font-size: 18px;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.3s ease;
}

.account-opening__button:hover {
  background-color: rgba(255, 125, 0, 0.9);
}

.account-opening__button-icon {
  margin-left: 8px;
}

/* 用户评价样式 */
.testimonials {
  padding: 80px 0;
  background-color: #F9FAFB;
}

.testimonials__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.testimonials__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 64px;
}

@media (min-width: 640px) {
  .testimonials__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonials__stat-card {
  padding: 24px;
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  text-align: center;
}

.testimonials__stat-number {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  color: #165DFF;
  margin-bottom: 8px;
}

.testimonials__stat-desc {
  color: #475569;
}

.testimonials__header {
  text-align: center;
  max-width: 576px;
  margin: 0 auto 32px;
}

.testimonials__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.testimonials__desc {
  font-size: 18px;
  color: #475569;
}

.testimonials__carousel-wrap {
  position: relative;
  overflow: hidden;
}

.testimonials__carousel {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 32px;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

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

.testimonials__carousel-slide {
  scroll-snap-align: start;
  flex: 0 0 100%;
  padding: 24px;
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

@media (min-width: 768px) {
  .testimonials__carousel-slide {
    flex: 0 0 calc(50% - 8px);
  }
}

@media (min-width: 1024px) {
  .testimonials__carousel-slide {
    flex: 0 0 calc(33.333% - 10.666px);
  }
}

.testimonials__slide-header {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.testimonials__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-right: 16px;
}

.testimonials__user-info {
  flex: 1;
}

.testimonials__user-name {
  font-weight: 500;
}

.testimonials__user-ip {
  font-size: 14px;
  color: #64748B;
}

.testimonials__rating {
  color: #FBBF24;
  margin-left: auto;
}

.testimonials__slide-desc {
  color: #475569;
}

.testimonials__carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background-color: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #165DFF;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
}

.testimonials__carousel-btn--prev {
  left: 8px;
}

.testimonials__carousel-btn--next {
  right: 8px;
}

.testimonials__carousel-btn:hover {
  background-color: #165DFF;
  color: #FFFFFF;
}

/* FAQ样式 */
.faq {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.faq__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.faq__header {
  text-align: center;
  max-width: 576px;
  margin: 0 auto 48px;
}

.faq__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.faq__list {
  max-width: 576px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq__item {
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  overflow: hidden;
}

.faq__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  text-align: left;
  background-color: #F9FAFB;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.faq__toggle:hover {
  background-color: #F1F5F9;
}

.faq__toggle-text {
  font-weight: 500;
  font-size: 16px;
}

.faq__toggle-icon {
  color: #64748B;
  transition: transform 0.3s ease;
}

.faq__toggle-icon--rotate {
  transform: rotate(180deg);
}

.faq__content {
  display: none;
  padding: 24px;
  background-color: #FFFFFF;
}

.faq__content--show {
  display: block;
}

.faq__content-text {
  color: #475569;
}

/* 下载区域样式 */
.download {
  padding: 80px 0;
  background-color: rgba(22, 93, 255, 0.05);
}

.download__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .download__inner {
    flex-direction: row;
    gap: 48px;
  }
}

.download__content {
  flex: 1;
}

@media (min-width: 1024px) {
  .download__content {
    flex: 1;
  }
}

.download__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.download__desc {
  font-size: 18px;
  color: #475569;
  margin-bottom: 32px;
}

.download__buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 640px) {
  .download__buttons {
    flex-direction: row;
    gap: 16px;
  }
}

.download__button {
  padding: 12px 32px;
  border-radius: 6px;
  font-weight: 500;
  color: #FFFFFF;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.download__button--android {
  background-color: #165DFF;
}

.download__button--android:hover {
  background-color: rgba(22, 93, 255, 0.9);
}

.download__button--ios {
  background-color: #1E293B;
}

.download__button--ios:hover {
  background-color: #334155;
}

.download__button-icon {
  margin-right: 8px;
}

.download__qrcode {
  flex: 1;
  display: flex;
  justify-content: center;
}

.download__qrcode-wrap {
  padding: 16px;
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.download__qrcode-img {
  width: 256px;
  height: 256px;
}

.download__qrcode-text {
  text-align: center;
  margin-top: 8px;
  font-size: 14px;
  color: #475569;
}

/* 交易指南样式 */
.guides {
  padding: 80px 0;
  background-color: #FFFFFF;
}

.guides__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.guides__header {
  text-align: center;
  max-width: 576px;
  margin: 0 auto 48px;
}

.guides__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.guides__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .guides__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.guides__card {
  background-color: #F9FAFB;
  padding: 32px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.guides__card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.guides__card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.guides__card-desc {
  color: #475569;
  margin-bottom: 24px;
}

.guides__card-link {
  display: inline-flex;
  align-items: center;
  color: #165DFF;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s ease;
}

.guides__card-link:hover {
  color: rgba(22, 93, 255, 0.8);
}

.guides__card-icon {
  margin-left: 8px;
}

/* 页脚样式 */
.footer {
  background-color: #1E293B;
  color: #FFFFFF;
  padding: 48px 0;
}

.footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer__column-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer__column-text {
  color: #CBD5E1;
  font-size: 14px;
}

.footer__column-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__column-link {
  color: #CBD5E1;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer__column-link:hover {
  color: #FFFFFF;
}

.footer__column-item {
  color: #CBD5E1;
  font-size: 14px;
  display: flex;
  align-items: center;
}

.footer__column-icon {
  margin-right: 8px;
}

.footer__bottom {
  border-top: 1px solid #334155;
  padding-top: 32px;
  text-align: center;
}

.footer__copyright {
  color: #94A3B8;
  font-size: 14px;
}

/* 悬浮广告样式 */
.floating-ad {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: #FFFFFF;
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 40;
  border-top: 1px solid #E2E8F0;
}

.floating-ad__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .floating-ad__inner {
    flex-direction: row;
    gap: 0;
  }
}

.floating-ad__text {
  color: #334155;
  font-size: 14px;
  margin-bottom: 0;
}

@media (min-width: 640px) {
  .floating-ad__text {
    margin-bottom: 0;
  }
}

.floating-ad__buttons {
  display: flex;
  gap: 16px;
  align-items: center;
}

.floating-ad__button {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.floating-ad__button--primary {
  background-color: #165DFF;
  color: #FFFFFF;
}

.floating-ad__button--primary:hover {
  background-color: rgba(22, 93, 255, 0.9);
}

.floating-ad__button--secondary {
  border: 1px solid #E2E8F0;
  color: #334155;
  background-color: transparent;
}

.floating-ad__button--secondary:hover {
  background-color: #F9FAFB;
}

.floating-ad__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748B;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.3s ease;
}

.floating-ad__close:hover {
  color: #334155;
}