/* =============================================
   Hooluluu 官网首页样式
   主色调: 紫色系 (#865FFF)
   辅助色: 粉色、白色、深色
   ============================================= */

/* CSS 变量定义 */
:root {
  --color-primary: #865FFF;
  --color-primary-dark: #6B4ECC;
  --color-primary-light: #A88BFF;
  --color-accent-pink: #FF6B9D;
  --color-accent-orange: #F5A623;
  --color-text-primary: #333333;
  --color-text-secondary: #777777;
  --color-text-light: #AAAAAA;
  --color-bg-light: #F5F5F5;
  --color-bg-white: #FFFFFF;
  --color-border: #E0E0E0;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 32px rgba(134, 95, 255, 0.18);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --transition-base: all 0.3s ease;
}

/* 基础重置 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

ul, ol {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================================
   顶部导航栏
   ============================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 1000;
  transition: var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-logo__brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 2px;
  line-height: 1;
}

.site-logo__tagline {
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}

/* 主导航菜单 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav__link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  white-space: nowrap;
}

.main-nav__link:hover,
.main-nav__link--active {
  color: var(--color-primary);
  background: rgba(134, 95, 255, 0.08);
}

.main-nav__link--highlight {
  background: var(--color-primary);
  color: #FFF;
  border-radius: var(--radius-xl);
  padding: 8px 20px;
}

.main-nav__link--highlight:hover {
  background: var(--color-primary-dark);
  color: #FFF;
}


/* 导航右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.header-actions__search {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-base);
  font-size: 18px;
  color: var(--color-text-secondary);
}

.header-actions__search:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

.header-actions__login {
  padding: 8px 24px;
  font-size: 14px;
  font-weight: 600;
  color: #FFF;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: var(--transition-base);
}

.header-actions__login:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(134, 95, 255, 0.3);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* =============================================
   Hero 横幅区域
   ============================================= */
.hero {
  position: relative;
  width: 100%;
  height: 600px;
  margin-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a2e 0%, #2d1b69 50%, #865FFF 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.1) 0%,
    rgba(0, 0, 0, 0.3) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: #FFF;
  padding: 0 24px;
}

.hero__title {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: 6px;
  line-height: 1.3;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 4px;
  opacity: 0.9;
  margin-bottom: 36px;
}

.hero__cta {
  padding: 14px 40px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  background: #FFF;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: var(--transition-base);
  letter-spacing: 2px;
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}

/* 轮播指示器 */
.hero__indicators {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transition: var(--transition-base);
  cursor: pointer;
}

.hero__dot--active {
  background: #FFF;
  width: 28px;
  border-radius: 5px;
}

/* 左右箭头 */
.hero__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #FFF;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 3;
  transition: var(--transition-base);
}

.hero__arrow:hover {
  background: rgba(255, 255, 255, 0.3);
}

.hero__arrow--left { left: 32px; }
.hero__arrow--right { right: 32px; }

/* =============================================
   关于我们
   ============================================= */
.about {
  padding: 80px 0;
  text-align: center;
  background: var(--color-bg-white);
}

.section-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 24px;
}

.section-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.about__text {
  max-width: 720px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* =============================================
   品牌视频区域
   ============================================= */
.brand-video {
  position: relative;
  width: 100%;
  height: 480px;
  overflow: hidden;
  background: #111;
}

.brand-video__poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}

.brand-video__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-base);
}

.brand-video__play::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #FFF;
  margin-left: 4px;
}

.brand-video__play:hover {
  background: rgba(134, 95, 255, 0.5);
  border-color: #FFF;
  transform: translate(-50%, -50%) scale(1.1);
}

/* =============================================
   品牌理念 + 功能介绍 (金色背景整体区域)
   ============================================= */
.philosophy {
  padding: 60px 0 72px;
  background: #C8922A;
  color: #333;
  text-align: center;
}

.philosophy__tagline-en {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 6px;
  color: #333;
  margin-bottom: 6px;
}

.philosophy__tagline-cn {
  font-size: 15px;
  font-style: italic;
  letter-spacing: 4px;
  color: #333;
  opacity: 0.85;
  margin-bottom: 56px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
}

.feature-card {
  background: transparent;
  border-radius: 0;
  padding: 0 16px;
  text-align: center;
  box-shadow: none;
  transition: var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: #333;
}

.feature-card__icon-text {
  font-size: 42px;
  font-weight: 900;
  color: #333;
  letter-spacing: 2px;
  line-height: 1;
}

.feature-card__title {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
}

.feature-card__desc {
  font-size: 13px;
  line-height: 1.9;
  color: rgba(51, 51, 51, 0.8);
}

/* =============================================
   热门商品展示
   ============================================= */
.products {
  position: relative;
  padding: 0 0 60px;
  text-align: center;
  color: #FFF;
  overflow: hidden;
}

/* 背景图 */
.products__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* 半透明遮罩 */
.products__overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 20, 10, 0.65);
  z-index: 1;
}

/* 顶部滚动图片条 */
.products__marquee {
  position: relative;
  z-index: 2;
  overflow: hidden;
  padding: 18px 0;
  mask-image: linear-gradient(to right, transparent 0%, #000 10%, #000 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 10%, #000 90%, transparent 100%);
}

.products__marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  animation: marquee-scroll 30s linear infinite;
}

.products__marquee-track img {
  width: 200px;
  height: 120px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  opacity: 0.85;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 标题区域 */
.products__content {
  position: relative;
  z-index: 2;
  padding: 40px 0 20px;
}

.products .section-label {
  color: #FFF;
  font-weight: 700;
  letter-spacing: 3px;
  font-size: 1.1rem;
}

.products .section-title {
  color: #FFF;
}

/* 圆形头像展示区 */
.products__showcase {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px 60px 40px;
}

.products__carousel {
  display: flex;
  gap: 28px;
  justify-content: center;
  align-items: center;
}

.product-item {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.4);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              height 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.3s ease,
              box-shadow 0.3s ease,
              transform 0.3s ease;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.15);
}

/* 中间突出的大头像 */
.product-item--active {
  width: 160px;
  height: 160px;
  border-color: #FFF;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.product-item:hover {
  transform: scale(1.08);
  border-color: #FFF;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.product-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 左右箭头 */
.products__nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  background: transparent;
  color: #FFF;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  flex-shrink: 0;
}

.products__nav-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #FFF;
}

.products__nav-btn--left {
  margin-right: 8px;
}

.products__nav-btn--right {
  margin-left: 8px;
}

/* =============================================
   IP 长廊展示
   ============================================= */
.ip-gallery {
  padding: 80px 0;
  background: var(--color-bg-white);
  text-align: center;
}

.ip-gallery__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding: 0 24px;
}

.ip-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  cursor: pointer;
  transition: var(--transition-base);
}

.ip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.ip-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-base);
}

.ip-card:hover img {
  transform: scale(1.05);
}

.ip-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 16px 16px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
  color: #FFF;
}

.ip-card__name {
  font-size: 16px;
  font-weight: 600;
}

.ip-card__artist {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 4px;
}

/* =============================================
   媒体新闻
   ============================================= */
.news {
  padding: 80px 0 48px;
  background: #FFF;
  text-align: center;
}

.news .section-label {
  font-size: 28px;
  font-weight: 900;
  color: #111;
  letter-spacing: 4px;
}

.news .section-title {
  color: #111;
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 0;
}

.news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding: 0 24px;
}

.news-card {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: #EEE;
  transition: var(--transition-base);
}

.news-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.news-card__image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}

/* 中间特色卡片 - 文字覆盖层 */
.news-card--featured {
  position: relative;
}

.news-card--featured .news-card__image {
  height: 240px;
}

.news-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 28px 24px;
  text-align: left;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.news-card--featured:hover .news-card__overlay {
  opacity: 1;
}

.news-card__title {
  font-size: 18px;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 12px;
  line-height: 1.5;
}

.news-card__excerpt {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-card__link {
  font-size: 13px;
  font-weight: 600;
  color: #FFF;
  letter-spacing: 1px;
  text-decoration: none;
  transition: var(--transition-base);
}

.news-card__link:hover {
  color: #C8922A;
}

.news__more {
  display: inline-block;
  margin-top: 36px;
  font-size: 14px;
  font-weight: 600;
  color: #333;
  letter-spacing: 2px;
  transition: var(--transition-base);
}

.news__more:hover {
  color: #C8922A;
}

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: #1A1A2E;
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 0;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  flex-shrink: 0;
}

.footer-brand__name {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary-light);
  letter-spacing: 2px;
}

.footer-brand__desc {
  font-size: 12px;
  margin-top: 6px;
  opacity: 0.7;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social__link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition-base);
}

.footer-social__link:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
  background: rgba(134, 95, 255, 0.1);
}

.footer-links {
  display: flex;
  gap: 56px;
}

.footer-links__group h4 {
  font-size: 14px;
  font-weight: 600;
  color: #FFF;
  margin-bottom: 16px;
}

.footer-links__group a {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 10px;
  transition: var(--transition-base);
}

.footer-links__group a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom__copy {
  font-size: 12px;
  opacity: 0.5;
}

.footer-bottom__links {
  display: flex;
  gap: 16px;
}

.footer-bottom__links a {
  font-size: 12px;
  opacity: 0.5;
  transition: var(--transition-base);
}

.footer-bottom__links a:hover {
  opacity: 1;
  color: var(--color-primary-light);
}

/* =============================================
   导航栏滚动状态
   ============================================= */
.site-header--scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* =============================================
   Hero 轮播淡入淡出
   ============================================= */
.hero__bg {
  transition: opacity 0.5s ease;
}

.hero__content {
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.hero__content--fade {
  opacity: 0;
  transform: translateY(12px);
}

/* =============================================
   滚动入场动画
   ============================================= */
[data-anim] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--anim-delay, 0s);
}

[data-anim="fade-in"] {
  transform: none;
}

[data-anim].anim--visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   品牌视频播放按钮脉冲
   ============================================= */
.brand-video__play--clicked {
  animation: pulse-ring 0.6s ease-out;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(134, 95, 255, 0.6); }
  100% { box-shadow: 0 0 0 30px rgba(134, 95, 255, 0); }
}

/* =============================================
   回到顶部按钮
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 36px;
  right: 36px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #FFF;
  font-size: 18px;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.3s ease;
  box-shadow: 0 4px 16px rgba(134, 95, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(134, 95, 255, 0.45);
}

/* =============================================
   移动端菜单展开
   ============================================= */
.mobile-menu-toggle--open span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle--open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle--open span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* =============================================
   响应式设计 - 平板端 (max-width: 1024px)
   ============================================= */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 16px 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  .main-nav--open {
    display: flex;
  }

  .main-nav__link {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero {
    height: 480px;
  }

  .hero__title {
    font-size: 38px;
    letter-spacing: 4px;
  }

  .features__grid {
    gap: 24px;
    padding: 0 24px;
  }

  .ip-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-links {
    gap: 32px;
  }
}

/* =============================================
   响应式设计 - 移动端 (max-width: 768px)
   ============================================= */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .header-actions__login {
    padding: 6px 16px;
    font-size: 13px;
  }

  .hero {
    height: 400px;
  }

  .hero__title {
    font-size: 28px;
    letter-spacing: 3px;
  }

  .hero__subtitle {
    font-size: 16px;
    letter-spacing: 2px;
  }

  .hero__arrow {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .hero__arrow--left { left: 12px; }
  .hero__arrow--right { right: 12px; }

  .about {
    padding: 56px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .brand-video {
    height: 280px;
  }

  .philosophy {
    padding: 56px 0;
  }

  .philosophy__tagline-en {
    font-size: 20px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
  }

  .feature-card {
    padding: 0 8px;
  }

  .products__marquee-track img {
    width: 150px;
    height: 90px;
  }

  .products__showcase {
    padding: 20px 20px 40px;
  }

  .products__carousel {
    gap: 16px;
  }

  .product-item {
    width: 90px;
    height: 90px;
  }

  .product-item--active {
    width: 120px;
    height: 120px;
  }

  .products__nav-btn {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .ip-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 16px;
  }

  .news__grid {
    grid-template-columns: 1fr 1fr;
    padding: 0 16px;
    gap: 8px;
  }

  .news-card__image {
    height: 180px;
  }

  .news-card--featured .news-card__image {
    height: 180px;
  }

  .news-card__title {
    font-size: 15px;
  }

  .news-card__overlay {
    padding: 16px;
  }

  .footer-top {
    flex-direction: column;
    gap: 32px;
    padding: 0 16px 32px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding: 16px;
  }
}

/* =============================================
   响应式设计 - 小屏移动端 (max-width: 480px)
   ============================================= */
@media (max-width: 480px) {
  .hero {
    height: 320px;
  }

  .hero__title {
    font-size: 22px;
  }

  .hero__cta {
    padding: 10px 28px;
    font-size: 14px;
  }

  .products__marquee-track img {
    width: 120px;
    height: 72px;
  }

  .products__showcase {
    padding: 16px 12px 32px;
    gap: 6px;
  }

  .products__carousel {
    gap: 10px;
  }

  .product-item {
    width: 64px;
    height: 64px;
    border-width: 3px;
  }

  .product-item--active {
    width: 88px;
    height: 88px;
  }

  .products__nav-btn {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .ip-gallery__grid {
    grid-template-columns: 1fr 1fr;
  }

  .news__grid {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 0 12px;
  }

  .news-card__image {
    height: 160px;
  }

  .news-card--featured .news-card__image {
    height: 200px;
  }

  .news-card__title {
    font-size: 14px;
  }

  .news-card__excerpt {
    font-size: 12px;
    -webkit-line-clamp: 2;
  }

  .news-card__overlay {
    padding: 14px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    font-size: 14px;
  }
}