/* 与 yingyingjiang.com 一模一样的样式（直接采用参考站 CSS） */

:root{
  --max-width:1280px;
  --text-width:760px;
  --dark:#0c1622;
  --dark-soft:#111c2a;
  --gray:#7a8699;
  --nav-h:56px;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  line-height:1.75;
  color:#111;
  background:#fff;
}
body.menu-open{ overflow: hidden; }

/* NAV – DESKTOP + MOBILE */
.site-nav{
  position:sticky;
  top:0;
  padding-top:env(safe-area-inset-top,0);
  background:rgba(255,255,255,.75);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(0,0,0,.06);
  z-index:1000;
}
.nav-inner{
  max-width:1280px;
  margin:0 auto;
  padding:16px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.nav-logo{
  font-size:14px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:#111;
}
.nav-links{
  list-style:none;
  display:flex;
  gap:42px;
  margin:0;
  padding:0;
}
.nav-links a{
  text-decoration:none;
  color:#111;
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.nav-sep{
  margin:0 0.4em;
  color:rgba(0,0,0,.35);
  font-weight:300;
  user-select:none;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  min-width:44px;
  min-height:44px;
  font-size:22px;
  cursor:pointer;
  background:0;
  border:0;
  padding:0;
  color:#111;
}

/* MOBILE FULLSCREEN MENU */
.mobile-menu{
  position:fixed;
  inset:0;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  background:#fff;
  z-index:2000;
  display:none;
  align-items:center;
  justify-content:center;
}
.mobile-menu ul{
  list-style:none;
  padding:0;
  margin:0;
  text-align:center;
}
.mobile-menu li{ margin:18px 0; }
.mobile-menu a{
  display:inline-block;
  padding:0.35em 0;
  font-size:20px;
  text-decoration:none;
  color:#111;
}
.mobile-menu-close{
  position:absolute;
  top:max(24px,env(safe-area-inset-top));
  right:max(24px,env(safe-area-inset-right));
  min-width:44px;
  min-height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  cursor:pointer;
  background:0;
  border:0;
  padding:0;
}

@media(max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-inner{padding:12px 16px}
}

/* HERO – 背景铺满到顶（含导航区域），视频在导航下可见 */
.hero{
  position:relative;
  margin-top:calc(-1 * var(--nav-h));
  padding-top:var(--nav-h);
  min-height:100vh;
  overflow:hidden;
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(
    90deg,
    rgba(12,22,34,.85) 0%,
    rgba(12,22,34,.65) 35%,
    rgba(12,22,34,.25) 60%,
    rgba(12,22,34,.15) 100%
  );
}
.hero-stage{
  position:absolute;
  inset:0;
  width:100%;
  min-height:100%;
}
.hero-stage video{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  min-width:100%;
  min-height:100%;
  object-fit:cover;
  object-position:center center;
  z-index:0;
}
.hero-stage .hero-media{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
}
.hero-stage .hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:var(--max-width);
  margin:0 auto;
  padding:0 20px;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  color:#fff;
  pointer-events:none;
}
.hero-inner h1{
  font-family:'Playfair Display',serif;
  font-size:64px;
  line-height:1.05;
  margin-bottom:24px;
}
.hero-inner p{
  font-size:16px;
  max-width:420px;
  color:#e5e7eb;
}

/* 移动端 Hero：与参考站一致，不压住导航，视频流式布局可缩放 */
@media(max-width:900px){
  .hero{
    margin-top:0;
    padding-top:0;
  }
  .hero-stage{
    position:relative;
    display:flex;
    flex-direction:column;
    min-height:auto;
  }
  .hero-stage video{
    position:relative;
    width:100%;
    height:60vh;
    min-height:240px;
    object-fit:cover;
    order:2;
  }
  .hero-stage .hero-media{
    position:relative;
    width:100%;
    height:60vh;
    min-height:240px;
    order:2;
  }
  .hero-stage .hero-media img{
    width:100%;
    height:100%;
    min-height:240px;
    object-fit:cover;
  }
  .hero-inner{
    padding:0 24px 1.5rem;
    min-height:auto;
    justify-content:flex-start;
    order:1;
  }
  .hero-inner h1{ font-size:44px; margin-top:0; }
  .hero-inner p{ margin-bottom:0; }
}
@media(max-width:480px){
  .hero-inner h1{ font-size:32px; }
  .hero-inner p{ font-size:15px; }
}

/* SECTIONS – 与参考站一致：无卡片、正文左对齐 */
.container{
  max-width:var(--max-width);
  margin:auto;
  padding:120px 20px;
}
.text-column{max-width:var(--text-width)}
.container h2{font-size:34px;margin-bottom:18px}
.container h3{
  font-size:13px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gray);
  margin-bottom:14px;
}
.container p{font-size:16px;color:#444;margin-bottom:18px}

/* BLOCKS – 与参考站一致 */
.block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:70px;
  align-items:center;
}
.block.reverse{direction:rtl}
.block.reverse>*{direction:ltr}
.block img{
  width:100%;
  max-width:100%;
  height:auto;
  border-radius:22px;
  display:block;
}

/* DARK – 与参考站一致 */
.section-dark{
  background:var(--dark-soft);
  color:#e5e7eb;
}
.section-dark p{color:#cbd5e1}
.section-dark h2{color:#fff}

/* INDUSTRY IMAGE */
.industry-image{margin:48px 0}
.industry-image img{
  width:100%;
  border-radius:18px;
}

/* FOOTER – 与参考站一致 */
footer{
  background:#0c1622;
  padding:100px 20px;
  color:#cbd5e1;
}
.footer-inner{
  max-width:760px;
  margin:auto;
  text-align:center;
  line-height:1.8;
}
.footer-inner .name{
  font-family:'Playfair Display',serif;
  font-size:26px;
  margin-bottom:12px;
}
.footer-inner a{color:#cbd5e1}
.footer-inner strong{display:block;margin-top:8px;margin-bottom:2px}

@media(max-width:900px){
  .container{padding:80px 16px}
  .block,.block.reverse{grid-template-columns:1fr;direction:ltr;gap:40px}
  .container h2{ font-size:28px; }
  footer{ padding:60px 16px; }
}
@media(max-width:480px){
  .container{ padding:56px 16px; }
  .block,.block.reverse{ gap:32px; }
  .container h2{ font-size:24px; }
  footer{ padding:48px 16px; }
}

/* 加载/错误提示 */
.load-msg,.load-err{padding:120px 20px;text-align:center;color:var(--gray);font-size:16px}
.load-err code{background:rgba(0,0,0,.06);padding:2px 6px}

/* Gallery / Studio 扩展（保留与参考站相同的视觉） */
.section-studio .text-column{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}

.section-gallery .ref-grid,
.section-studio .ref-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:14px;
}
.section-gallery .ref-grid img,
.section-studio .ref-grid img{
  width:100%;
  aspect-ratio:4/5;
  object-fit:cover;
  border-radius:18px;
  display:block;
}
@media(max-width:600px){
  .section-gallery .ref-grid,
  .section-studio .ref-grid{
    grid-template-columns:repeat(2,1fr);
    gap:8px;
  }
}
@media(max-width:380px){
  .section-gallery .ref-grid,
  .section-studio .ref-grid{
    grid-template-columns:1fr;
  }
}