/* ============================================
   MV视觉志 - 主样式表
   设计风格: 胶片色彩浓郁风
   CSS前缀: mv-
   ============================================ */

/* === 字体引入 === */
@font-face {
  font-family: 'Bebas Neue';
  src: url('../fonts/bebas-neue.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* === CSS变量 === */
:root {
  --mv-primary: #E63946;
  --mv-secondary: #457B9D;
  --mv-accent: #F1FAEE;
  --mv-text: #1D3557;
  --mv-link: #A8DADC;
  --mv-dark: #0d1b2a;
  --mv-card-bg: #ffffff;
  --mv-grain-opacity: 0.03;
  --mv-font-heading: 'Bebas Neue', 'Arial Black', sans-serif;
  --mv-font-body: 'Source Han Sans', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mv-radius: 4px;
  --mv-shadow: 0 8px 32px rgba(13, 27, 42, 0.15);
  --mv-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 全局重置 === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--mv-font-body);
  color: var(--mv-text);
  background-color: var(--mv-accent);
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
}

/* 胶片颗粒纹理覆盖 */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: var(--mv-grain-opacity);
}

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

a {
  color: var(--mv-link);
  text-decoration: none;
  transition: color var(--mv-transition);
}

a:hover {
  color: var(--mv-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--mv-font-heading);
  color: var(--mv-text);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

/* === 干扰标签隐藏 === */
.tone-jammer-block {
  display: none !important;
}

/* === 导航栏 === */
.mv-header {
  width: 100%;
  background: rgba(29, 53, 87, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.75rem 2rem;
  z-index: 1000;
  border-bottom: 2px solid var(--mv-primary);
}

.mv-nav-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mv-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.mv-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.sp-logo-text {
  font-family: var(--mv-font-heading);
  font-size: 1.5rem;
  color: var(--mv-primary);
  letter-spacing: 0.05em;
}

.mv-nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

.mv-nav-links li a {
  font-family: var(--mv-font-body);
  font-size: 0.95rem;
  color: var(--mv-accent);
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--mv-transition), text-shadow var(--mv-transition);
  text-decoration: none;
}

.mv-nav-links li a:hover,
.mv-nav-links li a.mv-active {
  color: var(--mv-link);
  text-shadow: 0 0 8px rgba(168, 218, 220, 0.5);
}

.mv-nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--mv-primary);
  transition: width var(--mv-transition);
}

.mv-nav-links li a:hover::after,
.mv-nav-links li a.mv-active::after {
  width: 100%;
}

/* 汉堡菜单 */
.mv-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.mv-hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--mv-accent);
  transition: all var(--mv-transition);
}

.mv-hamburger.mv-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mv-hamburger.mv-open span:nth-child(2) {
  opacity: 0;
}

.mv-hamburger.mv-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端全屏菜单 */
.mv-mobile-menu {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.mv-mobile-menu.mv-show {
  display: flex;
  transform: translateY(0);
}

.mv-mobile-menu a {
  font-family: var(--mv-font-heading);
  font-size: 2rem;
  color: var(--mv-accent);
  letter-spacing: 0.1em;
  transition: color var(--mv-transition);
}

.mv-mobile-menu a:hover {
  color: var(--mv-primary);
}

/* === Hero / 灵感放映室 === */
.mv-hero {
  position: relative;
  width: 100%;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--mv-dark);
}

.mv-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  filter: saturate(1.3);
}

.mv-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(13,27,42,0.4) 0%, rgba(13,27,42,0.8) 100%);
}

.mv-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
  max-width: 800px;
}

.mv-hero-slogan {
  font-family: var(--mv-font-heading);
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--mv-accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  text-shadow: 0 0 40px rgba(230, 57, 70, 0.3);
}

.mv-hero-desc {
  font-size: 1.1rem;
  color: rgba(241, 250, 238, 0.85);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

/* 胶片闪烁动画 */
@keyframes mv-flicker {
  0%, 100% { opacity: 1; }
  5% { opacity: 0.85; }
  10% { opacity: 1; }
  15% { opacity: 0.9; }
  20% { opacity: 1; }
  50% { opacity: 0.95; }
  55% { opacity: 1; }
}

.mv-hero-bg {
  animation: mv-flicker 8s infinite;
}

/* === 通用模块样式 === */
.mv-section {
  padding: 5rem 2rem;
  max-width: 1440px;
  margin: 0 auto;
}

.mv-section-title {
  font-family: var(--mv-font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--mv-text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.mv-section-subtitle {
  font-size: 1rem;
  color: var(--mv-secondary);
  margin-bottom: 3rem;
  max-width: 700px;
}

.mv-section-dark {
  background: var(--mv-dark);
  color: var(--mv-accent);
  padding: 5rem 2rem;
}

.mv-section-dark .mv-section-title {
  color: var(--mv-accent);
}

.mv-section-dark .mv-section-subtitle {
  color: var(--mv-link);
}

/* === 宝丽来卡片 === */
.mv-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.mv-polaroid-card {
  background: var(--mv-card-bg);
  border: 8px solid #fff;
  box-shadow: var(--mv-shadow);
  transition: transform var(--mv-transition), box-shadow var(--mv-transition);
  overflow: hidden;
}

.mv-polaroid-card:hover {
  transform: translateY(-8px) rotate(-1deg);
  box-shadow: 0 16px 48px rgba(13, 27, 42, 0.25);
}

.mv-polaroid-card .mv-card-img-wrap {
  overflow: hidden;
  position: relative;
}

.mv-polaroid-card .mv-card-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  filter: grayscale(60%) contrast(1.1);
  transition: filter 0.6s ease;
}

.mv-polaroid-card:hover .mv-card-img {
  filter: grayscale(0%) saturate(1.4) contrast(1.05);
}

.mv-polaroid-card .mv-card-body {
  padding: 1.2rem 1rem;
  text-align: center;
}

.mv-polaroid-card .mv-card-name {
  font-family: var(--mv-font-heading);
  font-size: 1.3rem;
  color: var(--mv-text);
  margin-bottom: 0.3rem;
}

.mv-polaroid-card .mv-card-quote {
  font-size: 0.85rem;
  color: var(--mv-secondary);
  font-style: italic;
}

/* === BTS 幕后解析 === */
.mv-bts-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.mv-bts-img {
  width: 100%;
  border-radius: var(--mv-radius);
  box-shadow: var(--mv-shadow);
}

.mv-bts-text h3 {
  font-family: var(--mv-font-heading);
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.mv-bts-text p {
  line-height: 1.9;
  color: var(--mv-text);
  margin-bottom: 1rem;
}

/* === 调色实验室 === */
.mv-color-lab {
  text-align: center;
}

.mv-color-lab-img {
  max-width: 900px;
  width: 100%;
  margin: 0 auto 2rem;
  border-radius: var(--mv-radius);
  box-shadow: var(--mv-shadow);
}

/* === 器材军火库 === */
.mv-gear-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.mv-gear-item {
  background: var(--mv-card-bg);
  border-radius: var(--mv-radius);
  overflow: hidden;
  box-shadow: var(--mv-shadow);
  transition: transform var(--mv-transition);
}

.mv-gear-item:hover {
  transform: scale(1.02);
}

.mv-gear-item img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.mv-gear-info {
  padding: 1.5rem;
}

.mv-gear-info h3 {
  font-family: var(--mv-font-heading);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.mv-gear-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.mv-gear-spec-tag {
  background: var(--mv-secondary);
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

/* === 视觉词典 === */
.mv-dict-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.mv-dict-card {
  background: var(--mv-dark);
  border-radius: var(--mv-radius);
  overflow: hidden;
  box-shadow: var(--mv-shadow);
}

.mv-dict-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.mv-dict-card-body {
  padding: 1.5rem;
}

.mv-dict-card-body h3 {
  font-family: var(--mv-font-heading);
  color: var(--mv-accent);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.mv-dict-card-body p {
  color: var(--mv-link);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* === 每周挑战 === */
.mv-challenge-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.mv-challenge-theme {
  background: var(--mv-primary);
  color: #fff;
  padding: 2.5rem;
  border-radius: var(--mv-radius);
  text-align: center;
}

.mv-challenge-theme h3 {
  font-family: var(--mv-font-heading);
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 1rem;
}

.mv-challenge-theme p {
  font-size: 1rem;
  line-height: 1.7;
}

/* === 合作邀约 === */
.mv-collab-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.mv-collab-item {
  background: var(--mv-card-bg);
  border-left: 4px solid var(--mv-primary);
  padding: 1.5rem;
  border-radius: 0 var(--mv-radius) var(--mv-radius) 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.mv-collab-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.mv-collab-item .mv-collab-tag {
  display: inline-block;
  background: var(--mv-link);
  color: var(--mv-text);
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  font-size: 0.75rem;
  margin-right: 0.3rem;
}

/* === 学院讲座 === */
.mv-lecture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.mv-lecture-card {
  background: var(--mv-card-bg);
  border-radius: var(--mv-radius);
  overflow: hidden;
  box-shadow: var(--mv-shadow);
}

.mv-lecture-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.mv-lecture-body {
  padding: 1.5rem;
}

.mv-lecture-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.mv-lecture-date {
  font-size: 0.8rem;
  color: var(--mv-primary);
  font-weight: 600;
}

/* === 荣誉殿堂 === */
.mv-fame-wrap {
  text-align: center;
}

.mv-fame-img {
  max-width: 900px;
  width: 100%;
  margin: 0 auto 2rem;
  border-radius: var(--mv-radius);
  box-shadow: var(--mv-shadow);
}

.mv-fame-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  margin-top: 2rem;
}

.mv-fame-item {
  text-align: center;
  max-width: 200px;
}

.mv-fame-item img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--mv-primary);
  margin: 0 auto 0.8rem;
}

.mv-fame-item h4 {
  font-family: var(--mv-font-heading);
  font-size: 1.1rem;
}

.mv-fame-item p {
  font-size: 0.8rem;
  color: var(--mv-secondary);
}

/* === 按钮 === */
.mv-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--mv-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--mv-radius);
  cursor: pointer;
  transition: all var(--mv-transition);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.mv-btn-primary {
  background: var(--mv-primary);
  color: #fff;
}

.mv-btn-primary:hover {
  background: #c62f3b;
  color: #fff;
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.4);
}

.mv-btn-secondary {
  background: var(--mv-secondary);
  color: #fff;
}

.mv-btn-secondary:hover {
  background: #3a6a88;
  color: #fff;
}

.mv-btn-outline {
  background: transparent;
  color: var(--mv-accent);
  border: 2px solid var(--mv-accent);
}

.mv-btn-outline:hover {
  background: var(--mv-accent);
  color: var(--mv-text);
}

/* === 页脚 === */
.mv-footer {
  background: var(--mv-dark);
  color: var(--mv-accent);
  padding: 4rem 2rem 2rem;
}

.mv-footer-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.mv-footer-col h4 {
  font-family: var(--mv-font-heading);
  font-size: 1.2rem;
  color: var(--mv-primary);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.mv-footer-col ul {
  list-style: none;
}

.mv-footer-col ul li {
  margin-bottom: 0.5rem;
}

.mv-footer-col ul li a {
  color: rgba(241, 250, 238, 0.7);
  font-size: 0.9rem;
  transition: color var(--mv-transition);
}

.mv-footer-col ul li a:hover {
  color: var(--mv-link);
}

.mv-social-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

.mv-social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(241, 250, 238, 0.1);
  color: var(--mv-accent);
  font-size: 1.1rem;
  transition: all var(--mv-transition);
}

.mv-social-links a:hover {
  background: var(--mv-primary);
  color: #fff;
}

.mv-footer-bottom {
  max-width: 1440px;
  margin: 0 auto;
  border-top: 1px solid rgba(241, 250, 238, 0.15);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(241, 250, 238, 0.5);
  line-height: 2;
}

.mv-footer-bottom a {
  color: rgba(241, 250, 238, 0.6);
}

.mv-footer-bottom a:hover {
  color: var(--mv-link);
}

.mv-footer-honor {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.5rem 0;
  color: rgba(241, 250, 238, 0.6);
}

/* === 内页Banner === */
.mv-page-banner {
  position: relative;
  width: 100%;
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--mv-dark);
}

.mv-page-banner img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: saturate(1.2);
}

.mv-page-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(13,27,42,0.3) 0%, rgba(13,27,42,0.7) 100%);
}

.mv-page-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

.mv-page-banner-content h1 {
  font-family: var(--mv-font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--mv-accent);
  letter-spacing: 0.1em;
}

.mv-page-banner-content p {
  color: rgba(241, 250, 238, 0.8);
  font-size: 1.05rem;
  margin-top: 0.5rem;
}

/* === 内页内容区 === */
.mv-content-area {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.mv-content-area h2 {
  font-family: var(--mv-font-heading);
  font-size: 1.6rem;
  margin: 2rem 0 1rem;
  color: var(--mv-text);
}

.mv-content-area p {
  margin-bottom: 1.2rem;
  line-height: 1.9;
}

.mv-content-area img {
  width: 100%;
  border-radius: var(--mv-radius);
  margin: 1.5rem 0;
  box-shadow: var(--mv-shadow);
}

/* === 调色台页面 === */
.mv-tiaose-container {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 3rem 2rem;
  min-height: 70vh;
}

.mv-tiaose-sidebar {
  background: var(--mv-dark);
  border-radius: var(--mv-radius);
  padding: 2rem;
  color: var(--mv-accent);
}

.mv-tiaose-sidebar h3 {
  font-family: var(--mv-font-heading);
  font-size: 1.2rem;
  color: var(--mv-primary);
  margin-bottom: 1rem;
}

.mv-upload-zone {
  border: 2px dashed rgba(241, 250, 238, 0.3);
  border-radius: var(--mv-radius);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--mv-transition);
  margin-bottom: 2rem;
}

.mv-upload-zone:hover {
  border-color: var(--mv-primary);
}

.mv-upload-zone p {
  color: rgba(241, 250, 238, 0.6);
  font-size: 0.9rem;
}

.mv-style-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.mv-style-card {
  background: rgba(241, 250, 238, 0.08);
  border: 2px solid transparent;
  border-radius: var(--mv-radius);
  padding: 0.8rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--mv-transition);
  font-size: 0.85rem;
  color: var(--mv-accent);
}

.mv-style-card:hover,
.mv-style-card.mv-active {
  border-color: var(--mv-primary);
  background: rgba(230, 57, 70, 0.15);
}

.mv-tiaose-preview {
  background: var(--mv-dark);
  border-radius: var(--mv-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 500px;
}

.mv-preview-placeholder {
  text-align: center;
  color: rgba(241, 250, 238, 0.4);
}

.mv-preview-img-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: none;
}

.mv-preview-img-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.mv-slider-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.mv-slider-line {
  position: absolute;
  top: 0;
  left: 50%;
  width: 3px;
  height: 100%;
  background: var(--mv-primary);
  cursor: ew-resize;
  z-index: 10;
}

.mv-slider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: var(--mv-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  cursor: ew-resize;
  z-index: 11;
}

/* === APP下载页 === */
.mv-app-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mv-dark);
  overflow: hidden;
}

.mv-app-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(1.5);
}

.mv-app-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 2rem;
  max-width: 700px;
}

.mv-app-content h1 {
  font-family: var(--mv-font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--mv-accent);
  margin-bottom: 1rem;
}

.mv-app-content p {
  color: rgba(241, 250, 238, 0.8);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.mv-qr-code {
  width: 200px;
  height: 200px;
  background: #fff;
  border-radius: 12px;
  margin: 0 auto 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.mv-qr-code img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.mv-store-badges {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.mv-store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(241, 250, 238, 0.1);
  border: 1px solid rgba(241, 250, 238, 0.2);
  border-radius: 8px;
  padding: 0.8rem 1.5rem;
  color: var(--mv-accent);
  font-size: 0.95rem;
  transition: all var(--mv-transition);
}

.mv-store-badge:hover {
  background: var(--mv-primary);
  border-color: var(--mv-primary);
  color: #fff;
}

/* === 面包屑 === */
.mv-breadcrumb {
  padding: 1rem 2rem;
  max-width: 1440px;
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--mv-secondary);
}

.mv-breadcrumb a {
  color: var(--mv-secondary);
}

.mv-breadcrumb a:hover {
  color: var(--mv-primary);
}

/* === 响应式设计 === */

/* 1440px */
@media (max-width: 1440px) {
  .mv-section {
    padding: 4rem 2rem;
  }
}

/* 1024px */
@media (max-width: 1024px) {
  .mv-bts-feature,
  .mv-challenge-wrap {
    grid-template-columns: 1fr;
  }

  .mv-tiaose-container {
    grid-template-columns: 1fr;
  }

  .mv-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* 768px */
@media (max-width: 768px) {
  .mv-nav-links {
    display: none;
  }

  .mv-hamburger {
    display: flex;
  }

  .mv-card-grid {
    grid-template-columns: 1fr 1fr;
  }

  .mv-hero-slogan {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .mv-section {
    padding: 3rem 1.5rem;
  }

  .mv-footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .mv-gear-grid {
    grid-template-columns: 1fr;
  }
}

/* 360px */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .mv-card-grid {
    grid-template-columns: 1fr;
  }

  .mv-style-cards {
    grid-template-columns: 1fr;
  }

  .mv-header {
    padding: 0.5rem 1rem;
  }

  .mv-section {
    padding: 2.5rem 1rem;
  }

  .mv-hero {
    min-height: 70vh;
  }

  .mv-collab-list {
    grid-template-columns: 1fr;
  }

  .mv-dict-grid {
    grid-template-columns: 1fr;
  }

  .mv-lecture-grid {
    grid-template-columns: 1fr;
  }
}

/* === 工具类 === */
.mv-text-center { text-align: center; }
.mv-mt-1 { margin-top: 1rem; }
.mv-mt-2 { margin-top: 2rem; }
.mv-mt-3 { margin-top: 3rem; }
.mv-mb-1 { margin-bottom: 1rem; }
.mv-mb-2 { margin-bottom: 2rem; }
.mv-mb-3 { margin-bottom: 3rem; }