/* ===== 网站全局样式 ===== */
@import url('https://cdn.jsdelivr.net/npm/cn-fontsource-source-han-sans-sc-vf@1.0.10/font.css');

@font-face {
  font-family: "Quantico";
  src: url("../font/Quantico/Quantico-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: "Quantico";
  src: url("../font/Quantico/Quantico-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
}

:root {
  --color-bg: #0f0f12;
  --color-surface: #1a1a20;
  --color-surface-hover: #24242c;
  --color-primary: #e8c547;
  --color-primary-dim: #c9a83a;
  --color-text: #e8e6e3;
  --color-text-muted: #9a9691;
  --color-border: #2d2d35;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
}

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

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

/* ===== 服务页滚动动画 ===== */
@keyframes servicesFadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes aboutDnaColLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes aboutDnaColRight {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}

/* 初始状态：子元素隐藏 */
body[data-page="services"] .animate-child,
body[data-page="about"] .animate-child {
  opacity: 0;
  transform: translateY(30px);
}

body[data-page="about"] .about-dna-col-left.animate-child {
  transform: translateX(-24px);
}

body[data-page="about"] .about-dna-col-right.animate-child {
  transform: translateX(24px);
}

/* 触发后：播放动画 */
body[data-page="services"] .animate-on-scroll.animate-in .animate-child,
body[data-page="about"] .animate-on-scroll.animate-in .animate-child {
  animation: servicesFadeInUp 0.7s ease-out forwards;
}

body[data-page="about"] .about-dna.animate-in .about-dna-col-left.animate-child {
  animation: aboutDnaColLeft 0.7s ease-out forwards;
}

body[data-page="about"] .about-dna.animate-in .about-dna-col-right.animate-child {
  animation: aboutDnaColRight 0.7s ease-out forwards;
}

@media (prefers-reduced-motion: reduce) {
  body[data-page="services"] .animate-child,
  body[data-page="about"] .animate-child {
    opacity: 1;
    transform: none;
    animation: none;
  }
  body[data-page="about"] .about-dna-col-left.animate-child,
  body[data-page="about"] .about-dna-col-right.animate-child {
    transform: none;
  }
  .about-works-scroll-track {
    animation: none;
  }
}

/* 子元素错峰动画 */
.box1-block.animate-child:nth-child(1) { animation-delay: 0.1s; }
.box1-block.animate-child:nth-child(2) { animation-delay: 0.2s; }
.box1-block.animate-child:nth-child(3) { animation-delay: 0.3s; }
.box2-feature.animate-child:nth-child(1) { animation-delay: 0.1s; }
.box2-feature.animate-child:nth-child(2) { animation-delay: 0.2s; }
.box2-feature.animate-child:nth-child(3) { animation-delay: 0.3s; }
.box3-block.animate-child:nth-child(1) { animation-delay: 0.1s; }
.box3-block.animate-child:nth-child(2) { animation-delay: 0.2s; }
.box3-block.animate-child:nth-child(3) { animation-delay: 0.3s; }

/* About 页子元素错峰动画 */
.about-box1-wrap .about-box1-top.animate-child { animation-delay: 0s; }
.about-box1-wrap .about-box1-img-wrap.animate-child { animation-delay: 0.1s; }
.about-box1-content .animate-child:nth-child(1) { animation-delay: 0.2s; }
.about-box1-content .animate-child:nth-child(2) { animation-delay: 0.3s; }
.about-box1-content .animate-child:nth-child(3) { animation-delay: 0.4s; }
.about-box1-content .animate-child:nth-child(4) { animation-delay: 0.5s; }
.about-dna-heading.animate-child { animation-delay: 0s; }
.about-dna-intro.animate-child { animation-delay: 0.1s; }
.about-dna-img-wrap.animate-child { animation-delay: 0.2s; }
.about-dna-col-left.animate-child { animation-delay: 0.3s; }
.about-dna-col-right.animate-child { animation-delay: 0.4s; }
.about-box1-heading.animate-child { animation-delay: 0.15s; }
.about-works-scroll.animate-child { animation-delay: 0.2s; }
.about-box2-header.animate-child { animation-delay: 0s; }
.about-box2-moats.animate-child { animation-delay: 0.1s; }
.about-box2-left.animate-child { animation-delay: 0.1s; }
.about-box2-feature.animate-child:nth-child(1) { animation-delay: 0.2s; }
.about-box2-feature.animate-child:nth-child(2) { animation-delay: 0.3s; }
.about-box2-feature.animate-child:nth-child(3) { animation-delay: 0.4s; }
.about-box3-hero.animate-child { animation-delay: 0s; }
.about-box3-block.animate-child:nth-child(1) { animation-delay: 0.1s; }
.about-box3-block.animate-child:nth-child(2) { animation-delay: 0.2s; }
.about-box3-block.animate-child:nth-child(3) { animation-delay: 0.3s; }
.about-box4-header.animate-child { animation-delay: 0s; }
.about-box4-img-wrap.animate-child { animation-delay: 0.15s; }
.about-box4-footer.animate-child { animation-delay: 0.25s; }
.about-contact-header.animate-child { animation-delay: 0s; }
.about-contact-form.animate-child { animation-delay: 0.15s; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 100px;
  background: #151515;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.navbar-inner {
  width: 100%;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

/* 左侧 Logo 区域 */
.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height:20px;
  
  display: block;
  transition: opacity var(--transition);
}

.nav-logo a:hover .nav-logo-img {
  opacity: 0.85;
}

.logo-placeholder {
  width: 120px;
  height: 50px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: var(--transition);
}

.logo-placeholder:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* 中间导航 */
.nav-center {
  display: flex;
  justify-content: center;
}

.nav-links {
  display: flex;
  gap: 4rem;
  list-style: none;
}

/* 右侧语言切换 */
.nav-lang {
  display: none; /* 暂时隐藏 */
  justify-content: flex-end;
  align-items: center;
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Source Han Sans SC VF", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 18px;
  color: #fff;
  background: #262626;
  border-radius: 90px;
  padding: 5px 10px;
}

.lang-switcher a {
  padding: 0.25rem 0.5rem;
  color: #fff;
}

.lang-switcher a:hover,
.lang-switcher a.active-lang {
  color: var(--color-primary);
}

.lang-switcher .separator {
  color: #fff;
  pointer-events: none;
}

/* 英文模式：先隐藏可翻译内容，待 JS 替换后再显示，避免中文闪现 */
html[lang="en"] [data-i18n]:not(.i18n-done) {
  visibility: hidden;
}

/* 导航链接始终使用 Quantico，覆盖英文模式的 Impact */
html[lang="en"] .nav-links a,
html[lang="zh"] .nav-links a,
.nav-links a {
  font-family: "Quantico", sans-serif !important;
}

/* hero-caption 始终使用 Quantico，覆盖英文模式的 Impact */
html[lang="en"] .hero .hero-caption p,
html[lang="zh"] .hero .hero-caption p,
.hero .hero-caption p {
  font-family: "Quantico", sans-serif !important;
}

/* 英文模式：导航、内容、页脚等所有英文文字使用 Impact 字体 */
html[lang="en"] [data-i18n],
html[lang="en"] .footer a,
html[lang="en"] .footer p,
html[lang="en"] .hero h1,
html[lang="en"] .hero p,
html[lang="en"] .page-header h1,
html[lang="en"] .page-header p,
html[lang="en"] .case-content h3,
html[lang="en"] .case-content p,
html[lang="en"] .service-item h3,
html[lang="en"] .service-item p,
html[lang="en"] .about-content p,
html[lang="en"] .stat-label,
html[lang="en"] .btn {
  font-family: Impact, "Impact", Haettenschweiler, "Arial Narrow Bold", sans-serif;
}

/* footer 区域始终使用 PingFang SC，覆盖英文模式的 Impact */
html[lang="en"] .footer span,
html[lang="en"] .footer a,
html[lang="en"] .footer p {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* footer-nav 使用 Quantico */
html[lang="en"] .footer .footer-nav a,
.footer .footer-nav a {
  font-family: "Quantico", sans-serif !important;
}

/* 服务页 box hero 标题、关于页 4 个 h2 标题使用 Quantico */
.box1-pics-slogan,
.box1-hero-title,
.box2-hero-title,
.box3-hero-title,
.box4-hero-title,
.about-dna-heading,
.about-box2-title,
.about-box3-title,
.about-contact-title,
.case-detail-overlay-title {
  font-family: "PingFang SC", sans-serif !important;
}

/* 语言切换器始终使用 Source Han Sans SC，包括中文和 EN */
html[lang="en"] .lang-switcher,
html[lang="en"] .lang-switcher a,
html[lang="en"] .lang-switcher .separator {
  font-family: "Source Han Sans SC VF", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.nav-links a {
  font-family: "Quantico", sans-serif;
  font-size: 28px;
  color: #fff;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 0;
  height: 8px;
  background: #CB0000;
  transition: width var(--transition);
}

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

/* 案例页导航：白底黑字 */
body[data-page="cases"] .navbar {
  background: #fff;
}

body[data-page="cases"] .nav-links a,
body[data-page="cases"] .nav-links a:hover,
body[data-page="cases"] .nav-links a.active {
  color: #000;
}

body[data-page="cases"] .lang-switcher {
  background: #e8e8e8;
  color: #000;
}

body[data-page="cases"] .lang-switcher a,
body[data-page="cases"] .lang-switcher .separator {
  color: #000;
}

body[data-page="cases"] .lang-switcher a:hover,
body[data-page="cases"] .lang-switcher a.active-lang {
  color: var(--color-primary);
}


/* ===== 主内容区 ===== */
.main-content {
  padding-top: 100px;
  min-height: calc(100vh - 200px);
}

.container {
  width: 100%;
  padding: 0 2rem;
}

/* ===== 服务页 ===== */
body[data-page="services"] .main-content {
  background: #000;
  padding-top: 100px;
  padding-bottom: 4rem;
}

/* ===== 关于页 ===== */
/* 关于页 box1、box2 及后续区域统一使用 PingFang SC */
body[data-page="about"] .about-box1,
body[data-page="about"] .about-box2,
body[data-page="about"] [class^="about-box"] {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

body[data-page="about"] .main-content {
  background: #000;
  padding-top: 100px;
  padding-bottom: 4rem;
  overflow-x: hidden;
}

.about-box1 {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem 1rem;
}

.about-box1-top {
  position: relative;
  margin-bottom: 3rem;
}

.about-box1-img-wrap {
  width: 40vw;
  margin: 0 auto;
  position: relative;
  z-index: 0;
  overflow: hidden;
  border-radius: 8px;
}

.about-box1-left,
.about-box1-right {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 95px;
  font-weight: 700;
  color: #fff;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  z-index: 1;
  pointer-events: none;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);font-weight: normal;
}

.about-box1-left {
  left: calc(-20% + 50px);
  text-align: left;
}

.about-box1-right {
  right: calc(-20% + 50px);
  text-align: right;
}

.about-box1-left img,
.about-box1-right img,
img.about-box1-left,
img.about-box1-right {
  /* max-width: 230px; */
  max-height: 120px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.about-box1-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  transition: transform 0.5s ease;
}

.about-box1-img-wrap:hover .about-box1-img {
  transform: scale(1.02);
}

.about-box1-heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 2rem;
  font-family: Impact, "Impact", Haettenschweiler, "Arial Narrow Bold", sans-serif;
}

.about-box1-subheading {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 32px;
  color: #fff;
  text-align: center;
  margin-bottom: 2rem;
}

.about-box1-wrap {
  /* 作为 animate-on-scroll 容器，子元素错峰动画 */
}

.about-box1-content {
  width: 90%;
  margin: 0 auto;
  padding: 2rem 0 3rem;
  text-align: center;
}

.about-box1-content p {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

.about-box1-content p:last-child {
  margin-bottom: 0;
}

/* 关于页 Our DNA 区域 */
.about-dna {
  width: 90%;
  margin: 0 auto;
  padding: 4rem 2rem 5rem;
}

.about-dna-heading {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 600;
  color: #fff;
  text-align: center;
  margin: 0 0 1.5rem;
  position: relative;
  padding-bottom: 1rem;
}

.about-dna-heading::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.6), transparent);
}

.about-dna-intro {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  text-align: center;
  margin: 0 auto 3rem;
}

.about-dna-img-wrap {
  width: 80%;
  margin: 0 auto 4rem;
  border-radius: 8px;
  overflow: hidden;
}

.about-dna-img {
  width: 100%;
  height: auto;
  display: block;
}

.about-dna-columns {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.about-dna-col-left {
  text-align: left;
}

.about-dna-col-right {
  text-align: right;
}

.about-dna-col-title {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 30px;
  font-weight: 300;
  color: #fff;
  margin: 0 0 1rem;
}

.about-dna-col-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0;
}

.about-dna-col-left .about-dna-col-desc {
  width: 80%;
  margin-right: auto;
  text-align: left;
}

.about-dna-col-right .about-dna-col-desc {
  width: 80%;
  margin-left: auto;
  text-align: right;
}

/* 关于页作品横向滚动（类似案例页） */
.about-works-scroll {
  margin: 2rem 0 3rem;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}

.about-works-scroll-wrap {
  width: 100%;
  overflow: hidden;
  padding: 0.5rem 0;
}

.about-works-scroll-wrap:hover .about-works-scroll-track {
  animation-play-state: paused;
}

.about-works-scroll-track {
  display: flex;
  gap: 1rem;
  width: max-content;
  animation: about-works-scroll 35s linear infinite;
}

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

.about-works-scroll-item {
  flex-shrink: 0;
}

.about-works-scroll-img {
  width: 280px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.about-works-scroll-item:hover .about-works-scroll-img {
  transform: scale(1.05);
}

/* 关于页 box2 */
.about-box2 {
  width: 90%;
  margin: 50px auto 0;
  padding: 0 2rem 5rem;
}

.about-box2-header {
  margin-bottom: 2rem;
}

.about-box2-moats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.about-moat-item {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  overflow: hidden;
  padding: 0;
}

.about-moat-img-wrap {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.about-moat-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-moat-title {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 30px;
  font-weight: 300;
  color: #fff;
  margin: 1.25rem 1.5rem 0.75rem;
}

.about-moat-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0 1.5rem 1.5rem;
}

.about-box2-wrap {
  display: grid;
  grid-template-columns: 7fr 3fr;
  gap: 2rem;
  align-items: stretch;
}

.about-box2-left {
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.03);
}

.about-box2-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.about-box2-subtitle {
  font-size: 28px;
  font-weight: normal;
  color: #fff;
  margin-bottom: 1rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box2-intro {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.about-box2-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1.5rem;
  align-items: stretch;
}

.about-box2-processes {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.about-box2-process {
  position: relative;
  aspect-ratio: 16/6;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.about-box2-process-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(3px);
  transition: transform 0.4s ease, filter 0.4s ease;
}

.about-box2-process:hover .about-box2-process-img {
  transform: scale(1.03);
  filter: blur(1px);
}

.about-box2-process-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box2-center {
  border-radius: 8px;
  overflow: hidden;
}

.about-box2-center {
  transition: transform 0.4s ease;
}

.about-box2-center:hover {
  transform: scale(1.02);
}

.about-box2-center-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
}

.about-box2-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.about-box2-feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box2-feature-desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* 关于页 box3 - What We Do */
.about-box3 {
  width: 90%;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.about-box3-hero {
  padding-bottom: 4rem;
}

.about-box3-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
}

.about-box3-subtitle {
  font-size: 28px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 0.5rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box3-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-top: 30px;
}

.about-box3-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.about-box3-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.about-box3-block-img-wrap {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 1.5rem;
}

.about-box3-block-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.about-box3-block:hover .about-box3-block-img {
  transform: scale(1.05);
}

.about-box3-block-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box3-block-desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* 关于页 box4 - Our Vision */
.about-box4 {
  width: 90%;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.about-box4-header {
  margin-bottom: 3rem;
}

.about-box4-title {
  font-size: 40px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box4-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.about-box4-subtitle {
  font-size: 28px;
  font-weight: normal;
  color: #fff;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box4-quote {
  font-size: 24px;
  font-weight: normal;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  text-align: right;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box4-img-wrap {
  position: relative;
  width: 500px;
  margin-left: auto;
  margin-right: auto;
  aspect-ratio: 16/9;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 3rem;
  background: rgba(255, 255, 255, 0.05);
}

.about-box4-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.about-box4-img-wrap:hover .about-box4-img {
  transform: scale(1.03);
}

.about-box4-img-placeholder {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  white-space: nowrap;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box4-footer {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
  width: 80%;
  margin-left: auto;
}

.about-box4-desc {
  text-align: right;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-box4-interplay {
  font-size: 40px;
  font-weight: 600;
  color: #fff;
  text-align: right;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* 关于页 联系我们 */
.about-contact {
  width: 100%;
  padding: 5rem 2rem;
  background: #000;
}

.about-contact-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.about-contact-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 3rem;
  margin-bottom: 3rem;
}

.about-contact-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 600;
  color: #fff;
  margin: 0;
  flex-shrink: 0;
}

.about-contact-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0;
  flex: 1;
}

.about-contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-contact-row {
  display: flex;
  align-items: flex-start;
  gap: 3rem;
}

.about-contact-label {
  width: 100px;
  flex-shrink: 0;
  font-size: 1rem;
  color: #fff;
  padding-top: 0.75rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-contact-input,
.about-contact-textarea {
  flex: 1;
  min-width: 0;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.about-contact-input::placeholder,
.about-contact-textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.about-contact-textarea {
  border-radius: 12px;
  resize: vertical;
  min-height: 120px;
}

.about-contact-submit-row {
  align-items: center;
  justify-content: flex-end;
}

.about-contact-submit {
  padding: 0;
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: #e74c3c;
  text-decoration-thickness: 2px;
}

.about-contact-submit:hover {
  opacity: 0.9;
}

/* 联系表单提交成功提示框 */
.contact-success-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.contact-success-modal.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.contact-success-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.contact-success-box {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem 2.5rem;
  max-width: 360px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.contact-success-modal.is-visible .contact-success-box {
  transform: scale(1);
}

.contact-success-title {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 0 0 1.5rem;
  line-height: 1.6;
}

.contact-success-btn {
  display: inline-block;
  padding: 0.6rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-bg);
  background: var(--color-primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.contact-success-btn:hover {
  background: var(--color-primary-dim);
  transform: translateY(-2px);
}

/* 服务页 box1 - 01区域 */
.box1 {
  width: 90%;
  margin: 0 auto;
}

.box1-pics-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 0;
}

.box1-pics-img {
  width: 1000px;
  max-width: 100%;
  height: auto;
  display: block;
}

.box1-pics-slogan {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 400;
  color: #fff;
  text-align: center;
  margin-top: 2rem;
  line-height: 1.3;
}

.box1-pics-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-top: 2rem;
  text-align: center;
}

.box1-pics-desc p {
  margin: 0 0 1rem;
}

.box1-pics-desc p:last-child {
  margin-bottom: 0;
}

.box1-hero {
  padding: 4rem 2rem 5rem;
}

.box1-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.box1-hero-num {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  flex-shrink: 0;
}

.box1-hero-text {
  flex: 1;
}

.box1-hero-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 0.6rem;
}

.box1-hero-subtitle {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.box1-blocks {
  padding: 0 2rem 4rem;
}

.box1-block {
  display: flex;
  gap: 3rem;
  align-items: center;
  padding: 4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.box1-block:last-child {
  border-bottom: none;
}

.box1-block-img-wrap {
  flex-shrink: 0;
  width: 320px;
  aspect-ratio: 16/10;
  border-radius: 8px;
  overflow: hidden;
}

.box1-block-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.box1-block-content {
  flex: 1;
}

.box1-block-title {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 30px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 1rem;
}

.box1-block-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

/* 服务页 box2 - 02区域 */
.box2 {
  width: 90%;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.box2-hero {
  padding-bottom: 4rem;
}

.box2-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.box2-hero-num {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  flex-shrink: 0;
}

.box2-hero-text {
  flex: 1;
}

.box2-hero-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 1rem;
}

.box2-hero-subtitle {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.box2-hero-en,
.box2-feature-en {
  font-size: 0.75em;
  font-weight: 400;
  opacity: 0.9;
}

.box2-flow-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.box2-flow-diagram-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.box2-features {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.box2-feature-title {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 25px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 0.75rem;
}

.box2-feature-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

/* 服务页 box3 - 03区域 */
.box3 {
  width: 90%;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.box3-hero {
  padding-bottom: 4rem;
}

.box3-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.box3-hero-num {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  flex-shrink: 0;
}

.box3-hero-text {
  flex: 1;
}

.box3-hero-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 1rem;
}

.box3-hero-subtitle {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.box3-hero-en {
  font-size: 0.75em;
  font-weight: 400;
  opacity: 0.9;
}

.box3-blocks {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.box3-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.box3-block:nth-child(1) {
  align-items: flex-start;
  text-align: left;
}

.box3-block:nth-child(2) {
  align-items: flex-end;
  text-align: right;
}

.box3-block:nth-child(3) {
  align-items: flex-start;
  text-align: left;
}

.box3-block-img-wrap {
  width: 100%;
  max-width: 600px;
  aspect-ratio: 16/10;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 1.5rem;
}

.box3-block-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.box3-block-content {
  /* max-width: 600px; */
}

.box3-block-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.box3-block-desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* 服务页 box4 - 04区域 */
.box4 {
  width: 90%;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.box4-hero {
  padding-bottom: 4rem;
}

.box4-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.box4-hero-num {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  flex-shrink: 0;
}

.box4-hero-text {
  flex: 1;
}

.box4-hero-title {
  font-family: "Quantico", sans-serif;
  font-size: 48px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 1rem;
}

.box4-hero-subtitle {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.box4-hero-en {
  font-size: 0.75em;
  font-weight: 400;
  opacity: 0.9;
}

.box4-content-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  padding: 2rem 0 4rem;
}

.box4-content-left {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.box4-content-item {
  text-align: left;
}

.box4-content-title {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 25px;
  font-weight: 400;
  color: #fff;
  margin: 0 0 0.75rem;
}

.box4-content-desc {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  font-weight: 200;
  color: #fff;
  line-height: 1.8;
  margin: 0;
}

.box4-content-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.box4-flow-visual {
  margin-bottom: 3rem;
}

.box4-flow-imgs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.box4-flow-left {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.box4-flow-img {
  width: 160px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.box4-flow-img-center {
  width: 280px;
  height: 175px;
}

.box4-flow-right .box4-flow-img {
  width: 160px;
  height: 100px;
}

.box4-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.box4-step-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.box4-step-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

/* ===== 首页 Hero ===== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.hero-image {
  background: var(--color-bg);
}

/* 与导航栏同高的顶部占位，避免视频顶到导航栏 */
.hero-navbar-spacer {
  height: 100px;
  flex-shrink: 0;
}

.hero-video-wrap {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 320px;
  overflow: hidden;
}

/* 黑色过渡条，与 hero-caption 配合实现文字横跨视频与黑底 */
.hero-black-bar {
  height: 80px;
  background: #000;
}

.hero-video-wrap .hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 80px; /* 与 hero-black-bar 高度一致，使文字中心对齐视频与黑底分界线 */
  width: 100%;
  text-align: center;
  font-family: "Quantico", sans-serif;
  transform: translateY(50%);
  z-index: 2;
}

/* 提高优先级覆盖 .hero p，保证白色与 Quantico */
.hero .hero-caption p {
  color: #fff;
  font-family: "Quantico", sans-serif;
}

.hero-caption .hero-caption-line1 {
  font-size: 30px;
  margin: 0 0 0.5rem;
  font-weight: 500;
}

.hero-caption .hero-caption-line2 {
  font-size: 60px;
  margin: 0;
  font-weight: 600;
}

/* Hero 轮播 */
.hero-carousel {
  position: relative;
}

.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.hero-slide .hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-arrow:hover {
  background: rgba(0, 0, 0, 0.8);
  color: var(--color-primary);
}

.hero-prev { left: 1.5rem; }
.hero-next { right: 1.5rem; }

.hero-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 0.75rem;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}

.hero-dot:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.4);
}

.hero-dot.active {
  background: #fff;
  border-color: #fff;
}

.hero::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232, 197, 71, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-image::before {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin: 0 auto 2rem;
}

.btn {
  display: inline-block;
  padding: 0.9rem 2rem;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: 6px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--color-primary-dim);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-bg);
}

/* ===== 通用页面标题 ===== */
/* 案例页 main 顶部横幅图 */
.cases-banner {
  position: relative;
  width: 100%;
  height: calc(100vh - 100px);
  min-height: 400px;
  overflow: hidden;
  background: #000;
}

.cases-banner-img-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.cases-banner-img-wrap picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.cases-banner-img,
.cases-banner-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.cases-banner-img {
  vertical-align: top;
}

.cases-banner-preview {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.cases-banner-preview.is-visible {
  opacity: 1;
}

/* 案例页 tab + 图片横向滚动，浮动在 banner 底部 */
body[data-page="cases"] .cases-gallery {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.7) 60%, transparent 100%);
  padding-top: 2rem;
}

body[data-page="cases"] .cases-tab {
  color: rgba(255, 255, 255, 0.8);
}

body[data-page="cases"] .cases-tab:hover {
  color: #fff;
}

body[data-page="cases"] .cases-tab.active {
  color: #fff;
}

body[data-page="cases"] .cases-tab.active::after {
  background: #fff;
}

.cases-tabs {
  display: flex;
  justify-content: center;
  gap: 8rem;
  padding: 1rem 1.5rem;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}

.cases-tab {
  position: relative;
  padding: 1rem 0;
  margin: 0 1rem;
  font-family: "Quantico", sans-serif;
  font-size: 30px;
  font-weight: 400;
  color: #666;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.cases-tab-count {
  position: absolute;
  top: 0;
  left: 100%;
  margin-left: 0.25em;
  font-family: "Quantico", sans-serif;
  font-size: 20px;
  font-weight: 400;
}

.cases-tab:hover {
  color: #333;
}

.cases-tab.active {
  color: #000;
  font-weight: 600;
  position: relative;
}

.cases-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: #000;
}

.cases-scroll-area {
  position: relative;
  background: #000;
  padding: 24px 5rem;
}

body[data-page="case-detail"] .cases-scroll-area {
  background: rgba(0, 0, 0, 0.6);
}

.cases-scroll-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}

.cases-scroll-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
}

.cases-scroll-btn-left {
  left: 10px;
}

.cases-scroll-btn-right {
  right: 10px;
}

.cases-scroll-wrap {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.cases-scroll-wrap::-webkit-scrollbar {
  display: none;
}

.cases-scroll-track {
  display: flex;
  gap: 2rem;
  width: max-content;
}

.cases-scroll-item {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  position: relative;
}

.cases-scroll-item:hover {
  z-index: 1;
}

.cases-scroll-item-active .cases-scroll-img-wrap {
  border-color: #fff;
}

.cases-scroll-item-active .cases-scroll-img-wrap::after {
  opacity: 0;
}

.cases-scroll-img-wrap {
  position: relative;
  width: 200px;
  height: 128px;
  border-radius: 15px;
  overflow: hidden;
  border: 1px solid transparent;
  box-sizing: border-box;
  transition: border-color 0.25s ease;
}

.cases-scroll-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.cases-scroll-item:hover .cases-scroll-img-wrap {
  border-color: #fff;
}

.cases-scroll-item:hover .cases-scroll-img-wrap::after {
  opacity: 0;
}

.cases-scroll-img {
  width: 200px;
  height: 128px;
  object-fit: cover;
  border-radius: 15px;
  transition: transform 0.25s ease;
}

.cases-scroll-item:hover .cases-scroll-img {
  transform: scale(1.05);
}

.cases-scroll-title {
  margin-top: 0.75rem;
  color: #fff;
  font-size: 14px;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.page-header {
  padding: 4rem 0 3rem;
  text-align: center;
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0 4rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition);
}

.card:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== 案例展示 ===== */
.case-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.case-item:last-child {
  border-bottom: none;
}

.case-item:nth-child(even) {
  direction: rtl;
}

.case-item:nth-child(even) > * {
  direction: ltr;
}

.case-image {
  aspect-ratio: 16/10;
  background: var(--color-surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 3rem;
}

.case-content h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.case-content p {
  color: var(--color-text-muted);
}

/* ===== 服务列表 ===== */
.service-list {
  padding: 2rem 0 4rem;
}

.service-item {
  display: flex;
  gap: 2rem;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 1rem;
  transition: var(--transition);
}

.service-item:hover {
  border-color: var(--color-primary);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(232, 197, 71, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.service-item h3 {
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.service-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== 关于我们 ===== */
.about-content {
  width: 100%;
  padding: 2rem 0 4rem;
}

.about-content p {
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===== 页脚 ===== */
.footer {
  margin-top: auto;
  background: #000000;
  color: #fff;
  font-size: 0.9rem;
  font-weight: normal;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.footer-main {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem;
  gap: 2rem;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-logo-img {
  width: 228px;
  height: auto;
  display: block;
}

.footer-logo-mail {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  margin-top: 30px;
  color: #fff;
  text-decoration: none;
  transition: opacity var(--transition);
}

.footer-logo-mail:hover {
  opacity: 0.85;
}

.footer-logo .logo-placeholder {
  width: 120px;
  height: 50px;
  color: #fff;
}

.footer-contact {
  flex: 1;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 1.5rem;
  text-align: right;
}

.footer-nav {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.footer-nav a {
  color: #fff;
  font-family: "Quantico", sans-serif;
  font-size: 18px;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

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

.footer-address {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  text-align: right;
}

.footer-address p {
  margin: 0;
  font-weight: normal;
}

.footer span {
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  text-align: center;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
}

.footer-bottom p {
  color: #fff;
  font-weight: normal;
  font-family: inherit;
  font-size: inherit;
}

/* ===== 响应式：1024px 及以下（平板/小桌面） ===== */
@media (max-width: 1024px) {
  body {
    overflow-x: hidden;
  }

  .navbar {
    height: 80px;
  }

  .navbar-inner {
    padding: 0 1.5rem;
    gap: 1.5rem;
  }

  .nav-links {
    gap: 2.5rem;
  }

  .nav-links a {
    font-size: 28px;
  }

  .nav-links a::after {
    height: 6px;
    bottom: -6px;
  }

  .lang-switcher {
    font-size: 16px;
    padding: 4px 8px;
    gap: 0.25rem;
  }

  .lang-switcher a {
    padding: 0.2rem 0.35rem;
  }

  .main-content {
    padding-top: 80px;
  }

  body[data-page="services"] .main-content,
  body[data-page="about"] .main-content {
    padding-top: 80px;
  }

  /* 首页 Hero */
  .hero-video-wrap {
    height: 55vh;
    min-height: 280px;
  }

  .hero-caption .hero-caption-line1 {
    font-size: 24px;
  }

  .hero-caption .hero-caption-line2 {
    font-size: 42px;
  }

  /* 案例页 */
  .cases-tabs {
    gap: 3rem;
    padding: 1rem 0.5rem 1rem;
  }

  .cases-tab {
    font-size: 22px;
    margin: 0 0.5rem;
  }

  .cases-tab.active::after {
    height: 6px;
  }

  .cases-tab-count {
    font-size: 16px;
  }

  .cases-scroll-area {
    padding: 28px 4rem 18px;
  }

  .cases-scroll-btn {
    width: 40px;
    height: 40px;
    font-size: 24px;
  }

  .cases-scroll-btn-left {
    left: 10px;
  }

  .cases-scroll-btn-right {
    right: 10px;
  }

  .cases-scroll-img-wrap {
    width: 140px;
    height: 89px;
  }

  .cases-scroll-img {
    width: 140px;
    height: 89px;
  }

  .cases-scroll-title {
    font-size: 14px;
  }

  /* 服务页 */
  .box1,
  .box2,
  .box3,
  .box4 {
    width: 95%;
  }

  .box1-hero,
  .box2-hero,
  .box3-hero,
  .box4-hero {
    padding: 3rem 1.5rem 4rem;
  }

  .box1-hero-num,
  .box2-hero-num,
  .box3-hero-num,
  .box4-hero-num {
    font-size: clamp(3rem, 8vw, 6rem);
  }

  .box1-hero-title,
  .box2-hero-title,
  .box3-hero-title,
  .box4-hero-title {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  }

  .box1-blocks,
  .box2,
  .box3,
  .box4 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .box1-block {
    gap: 2rem;
    padding: 3rem 0;
  }

  .box1-block-img-wrap {
    width: 280px;
  }

  .box1-pics-slogan {
    font-size: 36px;
  }

  .box2-flow-wrap {
    gap: 2rem;
  }

  .box3-block-img-wrap {
    max-width: 100%;
  }

  /* 关于页 */
  .about-box1,
  .about-dna-heading {
    font-size: 36px;
  }

  .about-dna-col-title {
    font-size: 26px;
  }

  .about-box2,
  .about-box3,
  .about-box4 {
    width: 95%;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .about-box1 {
    padding: 2.5rem 1.5rem 4rem;
  }

  .about-box1-img-wrap {
    width: 55vw;
  }

  .about-box2-title,
  .about-box3-title,
  .about-box4-title {
    font-size: 32px;
  }

  .about-box2-subtitle,
  .about-box3-subtitle,
  .about-box4-subtitle {
    font-size: 22px;
  }

  .about-box4-img-wrap {
    width: 100%;
    max-width: 400px;
  }

  .about-contact {
    padding: 3rem 1.5rem;
  }

  .about-contact-title {
    font-size: 32px;
  }

  .about-works-scroll-img {
    width: 220px;
    height: 130px;
  }

  /* 案例详情 */
  .case-detail-info {
    padding: 3rem 1.5rem 4rem;
  }

  .case-detail-info-inner {
    gap: 3rem;
  }

  .footer-main {
    padding: 2rem 1.5rem;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 1.5rem;
  }

  .footer-logo .footer-logo-img {
    width: 180px;
  }

  .footer-logo .footer-logo-mail {
    font-size: 14px;
  }

  .footer-logo .logo-placeholder {
    width: 90px;
    height: 40px;
    flex-shrink: 0;
  }

  .footer-contact {
    flex: 1;
    min-width: 0;
    padding-left: 1.5rem;
    gap: 1rem;
  }

  .footer-nav {
    gap: 2rem;
  }

  .footer-nav a {
    font-size: 16px;
  }

  .footer-address {
    font-size: 13px;
  }
}

/* ===== 响应式：768px 及以下（平板竖屏/大手机） ===== */
@media (max-width: 768px) {
  .navbar {
    height: 70px;
  }

  .navbar-inner {
    padding: 0 1rem;
    gap: 1rem;
  }

  .nav-links {
    gap: 2rem;
  }

  .nav-links a {
    font-size: 22px;
  }

  .nav-logo-img {
    width: 120px;
    height: auto;
  }

  .logo-placeholder {
    width: 90px;
    height: 40px;
    font-size: 0.75rem;
  }

  .lang-switcher {
    font-size: 14px;
    padding: 3px 6px;
    gap: 0.2rem;
    white-space: nowrap;
  }

  .lang-switcher a,
  .lang-switcher .separator {
    white-space: nowrap;
  }

  .lang-switcher a {
    padding: 0.15rem 0.3rem;
  }

  .main-content {
    padding-top: 70px;
  }

  body[data-page="services"] .main-content,
  body[data-page="about"] .main-content {
    padding-top: 70px;
  }

  /* 首页 Hero */
  .hero-video-wrap {
    height: 50vh;
    min-height: 240px;
  }

  .hero-caption .hero-caption-line1 {
    font-size: 20px;
  }

  .hero-caption .hero-caption-line2 {
    font-size: 32px;
  }

  .case-item,
  .case-item:nth-child(even) {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 1.5rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .service-item {
    flex-direction: column;
  }

  .box1-hero-inner,
  .box2-hero-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .box1-block {
    flex-direction: column;
    gap: 1.5rem;
    padding: 3rem 0;
  }

  .box1-block-img-wrap {
    width: 100%;
  }

  .box1-pics-slogan {
    font-size: 28px;
  }

  .box2-flow-wrap {
    grid-template-columns: 1fr;
  }

  .box4-content-wrap {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .box3-hero-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .box4-hero-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .box4-flow-imgs {
    flex-direction: column;
  }

  .box4-flow-left {
    flex-direction: row;
  }

  .box4-steps {
    grid-template-columns: 1fr;
  }

  /* 案例页 */
  .cases-banner {
    height: calc(100vh - 70px);
    min-height: 350px;
  }

  .cases-banner-img,
  .cases-banner-preview {
    width: 100%;
    height: auto;
  }

  .cases-tabs {
    gap: 1.5rem;
    padding: 0.75rem 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .cases-tab {
    font-size: 18px;
    padding: 0.75rem 0;
    margin: 0 0.25rem;
  }

  .cases-tab-count {
    font-size: 14px;
  }

  .cases-scroll-area {
    padding: 22px 3rem 16px;
  }

  .cases-scroll-btn {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

  .cases-scroll-img-wrap {
    width: 100px;
    height: 64px;
  }

  .cases-scroll-img {
    width: 100px;
    height: 64px;
  }

  .cases-scroll-title {
    font-size: 14px;
    margin-top: 0.5rem;
  }

  .about-box1-top {
    min-height: 200px;
  }

  .about-box1-left {
    left: calc(5% + 50px);
  }

  .about-box1-right {
    right: calc(5% + 50px);
  }

  img.about-box1-left,
  img.about-box1-right {
    max-width: 170px;
    max-height: 80px;
  }

  .about-box1-img-wrap {
    width: 70vw;
  }

  .about-works-scroll-img {
    width: 180px;
    height: 105px;
  }

  .about-box3-blocks {
    grid-template-columns: 1fr;
  }

  .about-box4-header-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .about-box4-quote {
    text-align: left;
    font-size: 18px;
  }

  .about-box4-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .about-box4-desc {
    max-width: 100%;
  }

  .about-box4-interplay {
    text-align: left;
    font-size: 28px;
  }

  .about-box4-img-placeholder {
    white-space: normal;
    padding: 0 1rem;
    font-size: 14px;
  }

  .about-contact-header {
    flex-direction: column;
    gap: 1rem;
  }

  .about-contact-row {
    flex-direction: column;
    gap: 0.5rem;
  }

  .about-contact-label {
    width: auto;
    padding-top: 0;
  }

  .about-contact-submit-row {
    align-items: flex-start;
  }

  .about-contact-title {
    font-size: 28px;
  }

  .about-contact-submit {
    font-size: 22px;
  }

  .about-box2-moats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about-moat-item-full {
    max-width: 100%;
  }

  .about-box2-wrap {
    grid-template-columns: 1fr;
  }

  .about-box2-main {
    grid-template-columns: 1fr;
  }

  .about-box2-center-img {
    min-height: 200px;
  }

  .about-box2-title {
    font-size: 28px;
  }

  .about-box2-subtitle {
    font-size: 20px;
  }

  .about-box3-title {
    font-size: 28px;
  }

  .about-box3-subtitle {
    font-size: 20px;
  }

  .about-box3-block-title {
    font-size: 1.25rem;
  }

  .footer-main {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    padding: 1.5rem 1rem;
    gap: 1rem;
  }

  .footer-logo .footer-logo-img {
    width: 150px;
  }

  .footer-logo .logo-placeholder {
    width: 70px;
    height: 32px;
    flex-shrink: 0;
  }

  .footer-contact {
    flex: 1;
    min-width: 0;
    padding-left: 1rem;
    gap: 0.75rem;
  }

  .footer-nav {
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .footer-nav a {
    font-size: 14px;
  }

  .footer-address {
    font-size: 12px;
  }

  .footer-bottom {
    padding: 1rem;
  }

  /* 案例详情 */
  .case-detail-info-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .case-detail-left {
    width: 100%;
  }

  .case-detail-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 响应式：480px 及以下（手机） ===== */
@media (max-width: 480px) {
  .navbar {
    height: 60px;
  }

  .navbar-inner {
    padding: 0 0.75rem;
    gap: 0.75rem;
    grid-template-columns: auto 1fr auto;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 14px;
    white-space: nowrap;
  }

  .nav-logo-img {
    width: 90px;
    height: auto;
  }

  .logo-placeholder {
    width: 70px;
    height: 32px;
    font-size: 0.65rem;
  }

  .lang-switcher {
    font-size: 12px;
    padding: 2px 5px;
    gap: 0.15rem;
    white-space: nowrap;
  }

  .lang-switcher a,
  .lang-switcher .separator {
    white-space: nowrap;
  }

  .lang-switcher a {
    padding: 0.1rem 0.25rem;
  }

  .main-content {
    padding-top: 60px;
  }

  body[data-page="services"] .main-content,
  body[data-page="about"] .main-content {
    padding-top: 60px;
  }

  /* 首页 Hero */
  .hero-video-wrap {
    height: 45vh;
    min-height: 200px;
  }

  .hero-caption .hero-caption-line1 {
    font-size: 16px;
  }

  .hero-caption .hero-caption-line2 {
    font-size: 24px;
  }

  /* 案例页 */
  .cases-banner {
    height: calc(100vh - 60px);
    min-height: 280px;
  }

  .cases-banner-img,
  .cases-banner-preview {
    width: 100%;
    height: auto;
  }

  .cases-tabs {
    gap: 1rem;
    padding: 0.5rem 0.25rem;
  }

  .cases-tab {
    font-size: 15px;
    padding: 0.5rem 0;
  }

  .cases-tab-count {
    font-size: 12px;
  }

  .cases-scroll-area {
    padding: 18px 2.5rem 12px;
  }

  .cases-scroll-btn {
    width: 32px;
    height: 32px;
    font-size: 18px;
  }

  .cases-scroll-img-wrap {
    width: 70px;
    height: 45px;
  }

  .cases-scroll-img {
    width: 70px;
    height: 45px;
  }

  .cases-scroll-title {
    font-size: 12px;
  }

  /* 服务页 */
  .box1,
  .box2,
  .box3,
  .box4 {
    width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .box1-hero,
  .box2-hero,
  .box3-hero,
  .box4-hero {
    padding: 2rem 1rem 3rem;
  }

  .box1-hero-num,
  .box2-hero-num,
  .box3-hero-num,
  .box4-hero-num {
    font-size: 3rem;
  }

  .box1-hero-title,
  .box2-hero-title,
  .box3-hero-title,
  .box4-hero-title {
    font-size: 1.5rem;
  }

  .box1-hero-subtitle,
  .box2-hero-subtitle,
  .box3-hero-subtitle,
  .box4-hero-subtitle {
    font-size: 0.95rem;
  }

  .box1-blocks {
    padding: 0 1rem 3rem;
  }

  .box1-block {
    padding: 2rem 0;
  }

  .box1-block-title,
  .box2-feature-title,
  .box3-block-title {
    font-size: 1.15rem;
  }

  .box2-flow-wrap {
    gap: 1.5rem;
  }

  .box3-blocks {
    gap: 2.5rem;
  }

  /* 关于页 */
  .about-box1,
  .about-dna {
    padding: 3rem 1rem 4rem;
  }

  .about-dna-heading {
    font-size: 28px;
  }

  .about-dna-img-wrap {
    width: 95%;
  }

  .about-dna-col-title {
    font-size: 22px;
  }

  .about-box2,
  .about-box3,
  .about-box4 {
    width: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .about-box1 {
    padding: 1.5rem 1rem 3rem;
  }

  .about-box1-heading {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .about-box1-content p {
    font-size: 0.95rem;
  }

  .about-box1-img-wrap {
    width: 85vw;
  }

  .about-box1-left,
  .about-box1-right {
    display: none;
  }

  .about-box2,
  .about-box3,
  .about-box4 {
    padding: 0 1rem 3rem;
  }

  .about-box2-title,
  .about-box3-title,
  .about-box4-title {
    font-size: 24px;
  }

  .about-box2-subtitle,
  .about-box3-subtitle {
    font-size: 18px;
  }

  .about-box2-intro {
    font-size: 0.9rem;
  }

  .about-box2-feature-title {
    font-size: 1rem;
  }

  .about-box2-feature-desc {
    font-size: 0.85rem;
  }

  .about-box3-block-title {
    font-size: 1.1rem;
  }

  .about-box3-block-desc {
    font-size: 0.9rem;
  }

  .about-box4-img-wrap {
    max-width: 100%;
  }

  .about-box4-quote {
    font-size: 16px;
  }

  .about-box4-interplay {
    font-size: 22px;
  }

  .about-box4-desc {
    font-size: 0.9rem;
  }

  .about-contact {
    padding: 2rem 1rem;
  }

  .about-contact-title {
    font-size: 24px;
  }

  .about-contact-desc {
    font-size: 0.9rem;
  }

  .about-contact-input,
  .about-contact-textarea {
    font-size: 16px;
  }

  .about-contact-submit {
    font-size: 18px;
  }

  .about-works-scroll-img {
    width: 150px;
    height: 90px;
  }

  /* 案例详情 */
  .case-detail-back {
    top: 1rem;
    left: 0.75rem;
    font-size: 0.9rem;
  }

.case-detail-img-overlay .case-detail-overlay-top {
  padding: 0 1rem 0.75rem;
  gap: 0.5rem;
  }

  .case-detail-overlay-subtitle {
    width: 200px;
  }

  .case-detail-overlay-title {
    font-size: clamp(1.25rem, 5vw, 1.75rem);
  }

  .case-detail-overlay-btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  .case-detail-info {
    padding: 2rem 1rem 3rem;
  }

  .case-detail-label {
    font-size: 0.85rem;
  }

  .case-detail-value,
  .case-detail-intro {
    font-size: 0.9rem;
  }

  .case-detail-gallery {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .footer-main {
    padding: 1.25rem 0.75rem;
    gap: 0.75rem;
  }

  .footer-logo .footer-logo-img {
    width: 120px;
  }

  .footer-logo .logo-placeholder {
    width: 60px;
    height: 28px;
  }

  .footer-contact {
    padding-left: 0.75rem;
    gap: 0.5rem;
  }

  .footer-nav {
    gap: 1rem;
  }

  .footer-nav a {
    font-size: 12px;
  }

  .footer-address {
    font-size: 11px;
  }

}

/* ===== 响应式：375px 及以下（iPhone 6/7/8 等小屏） ===== */
@media (max-width: 375px) {
  .navbar-inner {
    padding: 0 0.5rem;
    gap: 0.5rem;
  }

  .nav-links {
    gap: 0.6rem;
  }

  .nav-links a {
    font-size: 12px;
  }

  .nav-logo-img {
    width: 70px;
    height: auto;
  }

  .logo-placeholder {
    width: 60px;
    height: 28px;
    font-size: 0.6rem;
  }

  .lang-switcher {
    font-size: 11px;
    padding: 2px 4px;
    gap: 0.1rem;
    white-space: nowrap;
  }

  .lang-switcher a,
  .lang-switcher .separator {
    white-space: nowrap;
  }

  .lang-switcher a {
    padding: 0.08rem 0.2rem;
  }

  .footer-logo .footer-logo-img {
    width: 100px;
  }

  .footer-logo .logo-placeholder {
    width: 55px;
    height: 26px;
  }

  .footer-contact {
    padding-left: 0.6rem;
  }

  .footer-nav a {
    font-size: 11px;
  }

  .footer-address {
    font-size: 10px;
  }
}

/* ===== 案例详情页 ===== */
body[data-page="case-detail"] {
  min-height: 100vh;
  background: #000;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

.case-detail-main {
  min-height: 100vh;
  box-sizing: border-box;
  position: relative;
}

.case-detail-back {
  position: fixed;
  top: 1.5rem;
  left: 1rem;
  z-index: 10;
  color: #fff;
  font-size: 1rem;
  text-decoration: none;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  opacity: 0.9;
  transition: opacity 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.case-detail-back img {
  height: 18px;
  width: auto;
  display: block;
}

.case-detail-back-text {
  font-size: 18px;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.case-detail-back:hover {
  opacity: 1;
}

.case-detail-img-wrap {
  width: 100%;
  height: 100vh;
  padding: 0;
  box-sizing: border-box;
  position: relative;
}

.case-detail-img-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  z-index: 2;
  background: linear-gradient(to top, #000 0%, rgba(0, 0, 0, 0.7) 35%, transparent 100%);
}

.case-detail-overlay-top {
  padding: 0 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.case-detail-overlay-subtitle {
  width: 300px;
  height: auto;
  display: block;
}

.case-detail-overlay-title {
  position: relative;
  font-family: "PingFang SC", sans-serif;
  font-size: 50px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  margin: 0;
}

.case-detail-overlay-title-subs {
  position: absolute;
  right: 0;
  bottom: -30px;
  font-size: 30px;
  font-weight: 700;
}

.case-detail-overlay-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  color: #000;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  cursor: pointer;
}

.case-detail-overlay-btn:hover {
  background: #fff;
  transform: scale(1.02);
}

.case-detail-overlay-btn-icon {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid #000;
  flex-shrink: 0;
}

.case-detail-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  vertical-align: top;
}

/* 案例详情信息区 */
.case-detail-info {
  background: #000;
  padding: 4rem 2rem 5rem;
}

.case-detail-info-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 4rem;
  align-items: flex-start;
}

.case-detail-left {
  flex-shrink: 0;
  width: 400px;
}

.case-detail-right {
  flex: 1;
  min-width: 0;
}

.case-detail-field {
  margin-bottom: 2.5rem;
}

.case-detail-field:last-child {
  margin-bottom: 0;
}

.case-detail-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 0.75rem 0;
  font-weight: 500;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.case-detail-value {
  font-size: 20px;
  color: #fff;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.case-detail-producer {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.case-detail-producer-logo {
  width: 100px;
  height: 100px;
  display: block;
  object-fit: contain;
}

.case-detail-intro {
  font-size: 1rem;
  color: #fff;
  line-height: 1.8;
  margin: 0;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
}

.case-detail-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.case-detail-gallery-img {
  width: 100%;
  /* height: auto;
  aspect-ratio: 4/3; */
  object-fit: cover;
  display: block;
  border-radius: 4px;
}

/* ===== 全屏视频播放器 ===== */
.case-detail-video-wrap {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.case-detail-video-wrap.is-open {
  display: flex;
}

.case-detail-video-back {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  color: #fff;
  font-size: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  opacity: 0.9;
  transition: opacity 0.2s;
}

.case-detail-video-back:hover {
  opacity: 1;
}

.case-detail-video-back-arrow {
  font-size: 1.2rem;
}

.case-detail-video {
  width: 100%;
  max-height: calc(100vh - 80px);
  object-fit: contain;
}

.case-detail-video-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.5rem 1.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.case-detail-video-subs {
  color: #fff;
  font-size: 0.95rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  text-align: left;
}

.case-detail-video-controls-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.case-detail-video-play {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 3px;
  transition: background 0.2s, border-color 0.2s;
}

.case-detail-video-play:hover {
  background: rgba(255,255,255,0.2);
  border-color: #fff;
}

.case-detail-video-play.is-playing {
  padding-left: 0;
  font-size: 18px;
  letter-spacing: -2px;
}

.case-detail-video-time,
.case-detail-video-duration {
  color: #fff;
  font-size: 0.9rem;
  font-family: "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  min-width: 2.5rem;
}

.case-detail-video-time-sep {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
}

.case-detail-video-progress-wrap {
  flex: 1;
  min-width: 0;
}

.case-detail-video-progress {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255,255,255,0.3);
  border-radius: 3px;
  cursor: pointer;
}

.case-detail-video-progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.case-detail-video-progress::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* 移动端：producer-logo 需在 base 规则之后覆盖 */
@media (max-width: 480px) {
  .case-detail-producer-logo {
    width: 50px !important;
    height: 50px !important;
  }
}