:root {
  --primary: #c56cf0; /* 主色，亮紫色 */
  --primary-dark: #a55eea; /* 主色-暗紫色 */
  --primary-light: #f3c4fb; /* 主色-浅紫粉 */
  --secondary: #ffb6c1; /* 次色，粉红 */
  --accent: #ff9ff3; /* 强调色，亮粉紫 */
  --dark: #2d3436;
  --light: #ffffff;
  --gray: #636e72;
  --gray-light: #f8f8f8;
  --footer-bg: #fce4f9; /* 粉紫背景 */
  --footer-text: #555555;
  --footer-title: #333333;
  --success: #26de81;
  --warning: #fed330;
  --danger: #fc5c65;
  --bg-gradient: linear-gradient(135deg, rgba(197, 108, 240, 0.8), rgba(255, 159, 243, 0.8)); /* 渐变紫粉 */
  --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  --card-hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  --container-max-width: 1200px;
  --container-padding: 15px;
  --section-padding-large: 6rem;
  --section-padding-medium: 4rem;
  --section-padding-small: 3rem;
  --grid-gap-large: 2rem;
  --grid-gap-medium: 1.5rem;
  --grid-gap-small: 1rem;
  --font-size-h1-large: 3.5rem;
  --font-size-h1-medium: 2.8rem;
  --font-size-h1-small: 2.2rem;
  --font-size-h1-xs: 1.8rem;
  --font-size-h2-large: 2.5rem;
  --font-size-h2-medium: 2.2rem;
  --font-size-h2-small: 1.8rem;
  --font-size-h2-xs: 1.5rem;
}


* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", "PingFang SC", "Microsoft YaHei", "微软雅黑", "Hiragino Sans GB", "STHeiti",
    "WenQuanYi Micro Hei", sans-serif;
}

@font-face {
  font-family: "PingFang SC";
  src: local("PingFang SC"), local("PingFangSC");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "Microsoft YaHei";
  src: local("Microsoft YaHei"), local("微软雅黑");
  font-weight: normal;
  font-style: normal;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (max-width: 1200px) {
  html {
    font-size: 15px;
  }
}

@media (max-width: 992px) {
  html {
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 13px;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 12px;
  }
}

body {
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  opacity: 1;
  visibility: visible;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 90%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 1;
}

@media (max-width: 576px) {
  .container {
    width: 95%;
    padding: 0 10px;
  }
}

header {
  background-color: var(--light);
  color: var(--dark);
  padding: 0;
  height: 70px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

.logo-container:hover {
  transform: scale(1.03);
}

.logo-img {
  width: 36px;
  height: 36px;
  margin-right: 10px;
  border-radius: 8px;
  border: none;
  object-fit: contain;
  transition: all 0.3s ease;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: inline-block;
  transition: all 0.3s ease;
}

.logo-container:hover .logo {
  color: var(--primary-dark);
}

.nav-container {
  display: flex;
  align-items: center;
}

@media (max-width: 992px) {
  .nav-container {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: white;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    z-index: 101;
    pointer-events: none;
  }
  .nav-container.active {
    max-height: 500px;
    opacity: 1;
    pointer-events: auto;
    padding: 1rem 0;
  }
}

@media (max-width: 576px) {
  .logo {
    font-size: 1.5rem;
  }
  .logo-img {
    width: 35px;
    height: 35px;
  }
}

.nav-links {
  display: flex;
  list-style: none;
  transition: all 0.3s ease-in-out;
}

@media (max-width: 992px) {
  .nav-links {
    width: 100%;
    flex-direction: column;
    padding: 0;
  }
  .nav-links li {
    margin: 0.8rem 0;
    text-align: center;
  }
  .nav-links a {
    display: block;
    padding: 0.5rem 0;
  }
}

.nav-links li {
  margin-left: 25px;
}

.nav-links a {
  color: var(--dark);
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
}

.nav-links a:hover {
  color: var(--primary);
  background-color: rgba(240, 138, 93, 0.05);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.nav-links a:hover::after {
  width: 100%;
}

@media (max-width: 992px) {
  .nav-links a::after {
    bottom: 0;
    width: 0;
    height: 2px;
    left: 50%;
    transform: translateX(-50%);
    transition: width 0.3s ease;
  }
  .nav-links a:hover::after {
    width: 50%;
  }
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--dark);
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 0.3s ease;
  position: relative;
  z-index: 102;
}

@media (max-width: 992px) {
  .mobile-menu-btn {
    display: block;
  }
}

.mobile-menu-btn.active {
  transform: rotate(90deg);
  color: var(--primary);
}

.nav-buttons {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
}

.btn-nav {
  display: inline-block;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.btn-login {
  color: var(--primary);
  border: 1px solid var(--primary);
  background-color: transparent;
}

.btn-login:hover {
  background-color: rgba(240, 138, 93, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(240, 138, 93, 0.15);
}

.btn-register {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 4px 10px rgba(240, 138, 93, 0.3);
  border: none;
}

.btn-register:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(240, 138, 93, 0.4);
}

@media (max-width: 992px) {
  .nav-container.active .nav-buttons {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
  }
  .nav-container.active .btn-nav {
    width: 45%;
    max-width: 150px;
  }
  .mobile-menu-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
  }
}

@media (max-width: 992px) {
  .nav-buttons {
    margin-left: auto;
    margin-right: 3rem;
  }
  .btn-nav {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 992px) {
  .nav-buttons {
    display: flex;
    width: 100%;
    justify-content: center;
    margin: 1rem 0 0.5rem;
    flex-wrap: wrap;
  }
  .nav-buttons-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: 0.5rem;
  }
  .nav-buttons .btn-nav {
    width: auto;
    min-width: 110px;
    margin: 0 0.3rem;
  }
  .nav-container.active {
    padding: 0.8rem 0 1rem;
  }
}

@media (max-width: 480px) {
  .nav-buttons-container {
    flex-direction: row;
    justify-content: center;
    gap: 0.5rem;
  }
  .nav-buttons .btn-nav {
    min-width: 100px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 360px) {
  .nav-buttons .btn-nav {
    min-width: 90px;
    padding: 0.35rem 0.7rem;
    font-size: 0.75rem;
  }
}

@keyframes breathe {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes breatheLight {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

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

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes slideInDown {
  0% {
    transform: translateY(-100%);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeInDown {
  0% {
    transform: translateY(-20px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.5;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.btn-ripple-effect {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

.header-animate {
  animation: slideInDown 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.nav-item-animate {
  opacity: 0;
  animation: fadeInDown 0.5s ease-out forwards;
}

header {
  will-change: transform, opacity;
}

.nav-links li,
.logo-container,
.nav-buttons {
  will-change: transform, opacity;
}

.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--light);
  z-index: 9999;
  opacity: 1;
  transition: opacity 0.8s ease-out;
  pointer-events: none;
}

.page-transition.fade-out {
  opacity: 0;
}

.reduce-motion * {
  animation: none !important;
  transition: none !important;
  transform: none !important;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .header-animate,
  .nav-item-animate,
  .hero-content > * {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .page-transition {
    display: none !important;
  }
}

.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  z-index: 1000;
}

.scroll-progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.1s ease;
  box-shadow: 0 2px 5px rgba(240, 138, 93, 0.3);
}

@media (max-width: 480px) {
  .nav-container.active .nav-buttons {
    flex-direction: row;
    width: 100%;
    gap: 0.5rem;
    justify-content: center;
  }
  .nav-container.active .btn-nav {
    width: auto;
    min-width: 90px;
    max-width: 130px;
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
  .nav-links li {
    margin: 0.5rem 0;
  }
  .nav-links a {
    font-size: 0.85rem;
    padding: 0.3rem 0.6rem;
  }
}

@media (max-width: 360px) {
  .nav-container.active .btn-nav {
    width: auto;
    min-width: 80px;
    padding: 0.35rem 0.7rem;
    font-size: 0.75rem;
  }
  .nav-links a {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
  }
}

.header-right-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 992px) {
  .mobile-menu-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
  }
}

@media (max-width: 360px) {
  .header-right-controls {
    gap: 5px;
  }
}

@media (min-width: 993px) and (max-width: 1250px) {
  .nav-links li {
    margin-left: 15px;
  }
  .nav-links a {
    font-size: 0.85rem;
    padding: 0.4rem 0.6rem;
  }
  .btn-nav {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
  .nav-buttons {
    margin-left: 0.5rem;
  }
}

/* 更多菜单下拉样式 */
.more-menu {
  position: relative;
  display: inline-block;
}

.more-menu-btn {
  display: flex;
  align-items: center;
  color: var(--dark);
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  background: none;
  border: none;
}

.more-menu-btn:hover {
  color: var(--primary);
  background-color: rgba(240, 138, 93, 0.05);
}

.more-menu-btn::after {
  content: "▼";
  font-size: 0.7rem;
  margin-left: 5px;
  transition: transform 0.3s;
}

.more-menu.active .more-menu-btn::after {
  transform: rotate(180deg);
}

.more-menu-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: white;
  min-width: 180px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  padding: 0.5rem 0;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.more-menu.active .more-menu-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.more-menu-dropdown a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--dark);
  text-decoration: none;
  transition: all 0.2s;
  font-size: 0.85rem;
}

.more-menu-dropdown a:hover {
  background-color: rgba(240, 138, 93, 0.05);
  color: var(--primary);
}

/* 特定分辨率下的导航栏调整 */
@media (min-width: 993px) and (max-width: 1100px) {
  .nav-links .hide-on-medium {
    display: none;
  }

  .more-menu {
    display: inline-block;
  }
}

@media (min-width: 1101px) {
  .more-menu {
    display: none;
  }
}

@media (max-width: 992px) {
  .more-menu {
    display: none;
  }

  .nav-links .hide-on-medium {
    display: block;
  }

  .more-menu-dropdown {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 0;
    margin: 0.5rem 0;
    width: 100%;
    background-color: transparent;
  }

  .more-menu-dropdown a {
    padding: 0.5rem 0;
    text-align: center;
  }
}
