/* ============================================
   RJD 润吉达官网 · 苹果风格
   ============================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 颜色 */
  --bg:        #ffffff;
  --bg-alt:    #f5f5f7;
  --bg-dark:   #1d1d1f;
  --bg-dark-2: #0a0a0c;
  --ink:       #1d1d1f;
  --ink-2:     #6e6e73;
  --ink-3:     #86868b;
  --line:      #d2d2d7;
  --line-dark: #2a2a2c;
  --accent:    #0a4d8c;       /* RJD 蓝 */
  --accent-2:  #0c5a9e;
  --accent-soft: #e8f0f9;
  --energy:    #e0301e;
  --white:     #ffffff;

  /* 字体 */
  --font-sans: "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont,
               "Helvetica Neue", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "微软雅黑", Arial, sans-serif;

  /* 字号 */
  --fs-eyebrow: 13px;
  --fs-body: 17px;
  --fs-lede:  22px;
  --fs-h3:    24px;
  --fs-h2:    clamp(40px, 5vw, 64px);
  --fs-h1:    clamp(44px, 5.6vw, 74px);

  /* 间距 */
  --container: 1200px;
  --gutter: clamp(20px, 4vw, 40px);
  --section-py: clamp(88px, 12vw, 160px);

  /* 圆角 */
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-xl: 36px;

  /* 缓动 */
  --ease: cubic-bezier(.2, .8, .2, 1);
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.6;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-feature-settings:"ss01","cv11";
  overflow-x:hidden;
}
img,video,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
input,textarea,select{font:inherit;color:inherit}
::selection{background:var(--accent);color:#fff}

/* ---------- 容器 ---------- */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
  position:relative;
}

/* ---------- 滚动揭示 ---------- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
  will-change:opacity,transform;
}
.reveal.is-in{
  opacity:1;
  transform:none;
}
.reveal:nth-child(2).is-in{transition-delay:.08s}
.reveal:nth-child(3).is-in{transition-delay:.16s}
.reveal:nth-child(4).is-in{transition-delay:.24s}
.reveal:nth-child(5).is-in{transition-delay:.32s}
.reveal:nth-child(6).is-in{transition-delay:.40s}

@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============================================
   顶部导航
   ============================================ */
.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  height:54px;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease), border-color .3s var(--ease), height .3s var(--ease);
  color:var(--ink);
}
.nav.is-scrolled{
  background:rgba(255,255,255,.88);
  border-bottom-color:rgba(0,0,0,.08);
}
.nav.is-dark{
  color:#fff;
  background:rgba(20,20,22,.6);
}
.nav.is-dark.is-scrolled{
  background:rgba(20,20,22,.82);
  border-bottom-color:rgba(255,255,255,.1);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
  height:100%;
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-weight:600;
  letter-spacing:.01em;
  flex:none;
}
.nav-logo-mark{display:flex;align-items:center;justify-content:center}
.nav-logo-text{display:flex;flex-direction:column;line-height:1}
.nav-logo-zh{font-size:16px;font-weight:700;letter-spacing:.04em}
.nav-logo-en{font-size:9px;letter-spacing:.18em;color:var(--ink-3);margin-top:2px;font-weight:600}
.nav.is-dark .nav-logo-en{color:rgba(255,255,255,.6)}
.nav-links{
  display:flex;align-items:center;gap:6px;
  margin:0 auto;
  font-size:13px;
  font-weight:500;
}
.nav-links a{
  padding:8px 12px;
  border-radius:6px;
  color:var(--ink);
  opacity:.85;
  transition:opacity .2s, background .2s;
}
.nav.is-dark .nav-links a{color:#fff;opacity:.85}
.nav-links a:hover{opacity:1;background:rgba(0,0,0,.05)}
.nav.is-dark .nav-links a:hover{background:rgba(255,255,255,.1)}
.nav-cta{
  font-size:13px;font-weight:500;
  padding:8px 16px;
  border-radius:980px;
  background:var(--accent);
  color:#fff;
  transition:background .2s, transform .2s;
}
.nav-cta:hover{background:var(--accent-2);transform:translateY(-1px)}
.nav-burger{
  display:none;
  width:36px;height:36px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-burger span{
  display:block;width:18px;height:1.6px;background:currentColor;border-radius:2px;
  transition:transform .3s var(--ease), opacity .3s;
}
.nav.is-open .nav-burger span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav.is-open .nav-burger span:nth-child(2){opacity:0}
.nav.is-open .nav-burger span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
.nav-mobile{
  display:none;
  position:absolute;top:54px;left:0;right:0;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line);
  padding:12px var(--gutter) 24px;
  flex-direction:column;gap:4px;
}
.nav.is-open .nav-mobile{display:flex}
.nav-mobile a{
  padding:12px 0;
  font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.nav-mobile a:last-child{border-bottom:none}
.nav-cta-mobile{
  margin-top:8px;background:var(--accent);color:#fff;
  text-align:center;padding:12px;border-radius:980px;
}

/* ============================================
   通用元素
   ============================================ */
.eyebrow{
  font-size:var(--fs-eyebrow);
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:18px;
}
.eyebrow-light{color:#5aa6e8}

.title{
  font-size:var(--fs-h2);
  font-weight:700;
  line-height:1.08;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-bottom:24px;
  text-wrap:balance;
}
.title-light{color:#fff}

.desc{
  font-size:var(--fs-lede);
  line-height:1.55;
  color:var(--ink-2);
  font-weight:400;
  max-width:560px;
  margin-bottom:28px;
  text-wrap:pretty;
}
.desc-light{color:rgba(235,235,240,.78)}

.arrow{display:inline-block;margin-left:4px;transition:transform .3s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

.btn{
  display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;
  padding:12px 22px;
  border-radius:980px;
  transition:background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-2);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-block{width:100%;justify-content:center;padding:14px 22px;font-size:16px}
.btn-link{
  background:transparent;color:var(--accent);padding:8px 0;
  font-size:15px;font-weight:500;
}
.btn-link:hover{color:var(--accent-2)}

.hide-sm{display:inline}

/* ============================================
   首屏大标题
   ============================================ */
.display{
  font-size:var(--fs-h1);
  font-weight:700;
  line-height:1.04;
  letter-spacing:-.025em;
  color:var(--ink);
  margin-bottom:28px;
  white-space:nowrap;
}

/* ============================================
   服务行业标签（关于我们）
   ============================================ */
.about-industries{
  margin-top:4px;
  margin-bottom:28px;
}
.about-industries-label{
  display:block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin-bottom:14px;
}
.about-industries-tags{
  display:flex;flex-wrap:wrap;gap:10px;
}
.industry-tag{
  display:inline-flex;align-items:center;
  font-size:14px;font-weight:600;
  color:var(--accent);
  background:var(--accent-soft);
  padding:8px 18px;
  border-radius:980px;
  border:1px solid rgba(10,77,140,.16);
  letter-spacing:.04em;
}

/* ============================================
   设备前后对比（首屏）
   ============================================ */
.before-after{
  padding:clamp(120px, 14vw, 180px) 0 var(--section-py);
  background:var(--bg);
  position:relative;
}
.before-after .section-head{
  text-align:center;
  margin-bottom:48px;
}
.before-after .section-head .desc{
  text-align:center;
  margin-left:auto;
  margin-right:auto;
}
.before-after-fig{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:#fff;
  box-shadow:
    0 30px 80px -30px rgba(0,0,0,.18),
    0 10px 30px -10px rgba(0,0,0,.08);
  border:1px solid rgba(0,0,0,.04);
  margin:0 auto;
  max-width:1180px;
  transition:transform .8s var(--ease), box-shadow .8s var(--ease);
}
.before-after-fig:hover{
  transform:translateY(-4px);
  box-shadow:
    0 50px 100px -30px rgba(0,0,0,.22),
    0 16px 40px -10px rgba(0,0,0,.10);
}
.before-after-fig img{
  width:100%;
  height:auto;
  display:block;
}
.before-after-cap{
  position:absolute;
  left:24px;bottom:24px;
  display:flex;align-items:center;gap:10px;
  padding:8px 8px 8px 10px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border:1px solid rgba(0,0,0,.06);
  border-radius:980px;
  box-shadow:0 6px 20px -8px rgba(0,0,0,.18);
}
.ba-tag{
  font-size:12px;font-weight:600;
  padding:6px 14px;
  border-radius:980px;
  letter-spacing:.04em;
}
.ba-tag-before{
  background:rgba(110,110,115,.10);
  color:#3a3a3c;
}
.ba-tag-arrow{
  width:22px;height:22px;
  padding:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent);
  color:#fff;
  border-radius:50%;
  font-size:14px;
  box-shadow:0 4px 12px -4px var(--accent);
}
.ba-tag-after{
  background:var(--accent);
  color:#fff;
  box-shadow:0 4px 14px -4px var(--accent);
}

/* ============================================
   Feature 区块（工业设计/三维/包装）
   ============================================ */
.feature{
  padding:var(--section-py) 0;
  position:relative;
  overflow:hidden;
}
.feature-light{background:var(--bg)}
.feature-dark{
  background:linear-gradient(180deg, #0a0a0c 0%, #1d1d1f 100%);
  color:#fff;
}
.feature-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(60% 50% at 20% 0%, rgba(10,77,140,.25), transparent 60%),
    radial-gradient(50% 50% at 90% 100%, rgba(224,48,30,.10), transparent 60%);
}
.feature .container{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(40px, 6vw, 88px);
  align-items:center;
  position:relative;z-index:1;
}
.feature-text{max-width:520px}
.feature-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 22px;
  margin-top:8px;
}
.feature-list li{
  display:flex;align-items:center;gap:10px;
  font-size:15px;color:var(--ink-2);
  font-weight:500;
}
.feature-list .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  flex:none;
}
.feature-list-light li{color:rgba(235,235,240,.85)}
.feature-list-light .dot{background:#5aa6e8}

.feature-media{position:relative}
.feature-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:#eef0f3;
  box-shadow:
    0 0 0 1px rgba(0,0,0,.04),
    0 40px 100px -30px rgba(0,0,0,.25),
    0 15px 40px -15px rgba(0,0,0,.1);
  transition:transform .6s var(--ease), box-shadow .6s var(--ease);
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:
    0 0 0 1px rgba(0,0,0,.04),
    0 50px 120px -30px rgba(0,0,0,.3),
    0 20px 50px -15px rgba(0,0,0,.15);
}
.feature-card img,
.feature-card video{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  display:block;
}
.feature-card-video video{aspect-ratio:16/9}
.feature-card-cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 22px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  background:linear-gradient(180deg, transparent 0%, rgba(0,0,0,.55) 100%);
  color:#fff;
  pointer-events:none;
}
.cap-tag{
  display:inline-block;
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  padding:5px 10px;
  background:rgba(255,255,255,.95);
  color:var(--ink);
  border-radius:980px;
  font-weight:600;
}
.cap-name{
  font-size:15px;font-weight:600;color:#fff;
  text-shadow:0 1px 6px rgba(0,0,0,.4);
}
.cap-tag-light{background:rgba(255,255,255,.18);color:#fff}
.cap-name-light{color:#fff}

/* ============================================
   区块头
   ============================================ */
.section-head{
  margin-bottom:64px;
  max-width:780px;
}
.section-head-center{
  margin-left:auto;margin-right:auto;
  text-align:center;
}
.section-head .desc{
  font-size:18px;
  margin:0 auto;
  text-wrap:pretty;
}
.section-head-center .desc{
  text-align:center;
  margin-left:auto;
  margin-right:auto;
}

/* ============================================
   工业设计案例
   ============================================ */
.works{
  padding:var(--section-py) 0;
  background:var(--bg-alt);
}
.works-grid{
  display:grid;
  grid-template-columns:repeat(6, 1fr);
  gap:24px;
}
.work-card{
  position:relative;
  grid-column:span 2;
  border-radius:var(--r-md);
  overflow:hidden;
  background:#fff;
  display:block;
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
  box-shadow:0 1px 3px rgba(0,0,0,.04);
}
.work-card-lg{grid-column:span 3}
.work-card:hover{
  transform:translateY(-6px);
  box-shadow:0 30px 60px -20px rgba(0,0,0,.2);
}
.work-card-img{
  overflow:hidden;
  background:#eef0f3;
  aspect-ratio:4/3;
}
.work-card:hover .work-card-img img{transform:scale(1.04)}
.work-card-img img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .8s var(--ease);
}
.work-card-meta{padding:20px 22px 22px}
.work-tag{
  display:inline-block;
  font-size:11px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);
  margin-bottom:10px;
}
.work-name{
  font-size:19px;font-weight:600;
  color:var(--ink);
  margin-bottom:4px;
  letter-spacing:-.005em;
}
.work-sub{
  font-size:13px;color:var(--ink-3);
  letter-spacing:.01em;
}
.works-more{
  text-align:center;
  margin-top:56px;
}

/* ============================================
   三维动画作品
   ============================================ */
.reel{
  padding:var(--section-py) 0;
  background:var(--bg-dark);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.reel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(50% 60% at 80% 0%, rgba(10,77,140,.35), transparent 60%),
    radial-gradient(50% 50% at 10% 100%, rgba(90,166,232,.15), transparent 60%);
}
.reel .eyebrow{color:#5aa6e8}
.reel .title{color:#fff}
.reel .desc{color:rgba(235,235,240,.75)}
.reel-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
  margin-bottom:72px;
  position:relative;z-index:1;
}
.reel-card{
  border-radius:var(--r-md);
  overflow:hidden;
  background:#111;
  box-shadow:0 20px 60px -20px rgba(0,0,0,.6);
  transition:transform .5s var(--ease);
}
.reel-card:hover{transform:translateY(-6px)}
.reel-media{
  position:relative;
  aspect-ratio:4/3;
  background:#0a0a0c;
  overflow:hidden;
}
.reel-media video{
  width:100%;height:100%;object-fit:cover;
}
.reel-badge{
  position:absolute;left:14px;top:14px;
  font-size:10px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;
  padding:4px 10px;
  background:rgba(0,0,0,.55);
  color:#fff;
  border-radius:980px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.reel-meta{padding:20px 22px 22px}
.reel-meta h3{font-size:18px;font-weight:600;margin-bottom:4px;letter-spacing:-.005em}
.reel-meta p{font-size:13px;color:rgba(235,235,240,.55)}

/* 全部作品封面网格 */
.reel-all{
  border-top:1px solid var(--line-dark);
  padding-top:64px;
  position:relative;z-index:1;
}
.reel-all-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
  margin-bottom:32px;
}
.reel-all-title{
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:#5aa6e8;font-weight:600;
}
.reel-all-sub{
  font-size:13px;color:rgba(235,235,240,.5);letter-spacing:.04em;
}
.poster-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
}
.poster-card{
  display:block;
  border-radius:var(--r-md);
  overflow:hidden;
  background:#111;
  text-decoration:none;
  position:relative;
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
  box-shadow:0 8px 24px -12px rgba(0,0,0,.5);
}
.poster-card:hover{
  transform:translateY(-4px);
  box-shadow:0 24px 50px -16px rgba(0,0,0,.7);
}
.poster-media{
  position:relative;
  aspect-ratio:4/3;
  background:#0a0a0c;
  overflow:hidden;
}
.poster-media img,
.poster-media video{
  width:100%;height:100%;object-fit:cover;
  transition:transform .7s var(--ease), filter .5s var(--ease);
  filter:brightness(.9) saturate(1.05);
}
.poster-card:hover .poster-media img,
.poster-card:hover .poster-media video{
  transform:scale(1.06);
  filter:brightness(1) saturate(1.1);
}
.poster-play{
  position:absolute;left:12px;bottom:12px;
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 11px 5px 10px;
  background:rgba(0,0,0,.6);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  color:#fff;
  font-size:11px;font-weight:600;letter-spacing:.04em;
  border-radius:980px;
  opacity:.85;
  transition:opacity .3s var(--ease), background .3s var(--ease);
}
.poster-card:hover .poster-play{
  opacity:1;
  background:rgba(10,77,140,.9);
}
.poster-meta{
  padding:14px 16px 16px;
}
.poster-meta h4{
  font-size:14px;font-weight:600;
  color:#fff;
  margin-bottom:5px;
  letter-spacing:-.005em;
  line-height:1.35;
}
.poster-cat{
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(235,235,240,.5);font-weight:600;
}

/* ============================================
   服务流程
   ============================================ */
.process{
  padding:var(--section-py) 0;
  background:var(--bg);
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
  position:relative;
}
.process-steps::before{
  content:"";position:absolute;
  left:8%;right:8%;top:38px;
  height:1px;background:var(--line);
  z-index:0;
}
.process-step{
  position:relative;z-index:1;
  padding:24px 22px 28px;
  background:#fff;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  transition:transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.process-step:hover{
  transform:translateY(-4px);
  border-color:var(--accent);
  box-shadow:0 20px 50px -20px rgba(10,77,140,.2);
}
.process-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:54px;height:54px;
  border-radius:50%;
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  color:#fff;
  font-size:18px;font-weight:700;
  letter-spacing:.04em;
  margin-bottom:18px;
  box-shadow:0 10px 24px -8px rgba(10,77,140,.4);
}
.process-step h3{
  font-size:19px;font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
  letter-spacing:-.005em;
}
.process-step p{
  font-size:14px;line-height:1.6;
  color:var(--ink-2);
}

/* ============================================
   合作伙伴
   ============================================ */
.partners{
  padding:var(--section-py) 0;
  background:var(--bg-alt);
}
.partners-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
}
.partner-card{
  padding:32px 24px 28px;
  background:#fff;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  text-align:center;
  transition:transform .4s var(--ease), box-shadow .4s var(--ease);
}
.partner-card:hover{
  transform:translateY(-4px);
  box-shadow:0 20px 50px -20px rgba(0,0,0,.15);
}
.partner-mark{
  font-size:14px;font-weight:800;letter-spacing:.16em;
  color:var(--accent);
  padding:8px 0;
  border-bottom:1px solid var(--line);
  margin-bottom:18px;
}
.partner-card h3{
  font-size:16px;font-weight:600;color:var(--ink);
  margin-bottom:6px;
  line-height:1.4;
}
.partner-card p{
  font-size:13px;color:var(--ink-3);
}

/* ============================================
   关于我们
   ============================================ */
.about{
  padding:var(--section-py) 0;
  background:var(--bg);
}
.about-inner{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:clamp(40px, 6vw, 88px);
  align-items:center;
}
.about-highlight{
  margin-top:24px;
  padding:20px 24px;
  background:var(--accent-soft);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:18px;font-weight:600;
  line-height:1.55;
  color:var(--ink);
}
.about-media{position:relative}
.about-card{
  border-radius:var(--r-lg);
  overflow:hidden;
  background:#eef0f3;
  box-shadow:0 30px 80px -30px rgba(0,0,0,.25);
  margin-bottom:24px;
}
.about-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.about-stats{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
}
.stat{
  padding:18px 12px;
  text-align:center;
  background:var(--bg-alt);
  border-radius:var(--r-sm);
}
.stat-num{
  font-size:32px;font-weight:700;
  color:var(--accent);
  letter-spacing:-.02em;
  line-height:1;
  margin-bottom:6px;
}
.stat-num span{font-size:18px;font-weight:600;margin-left:2px}
.stat-label{font-size:12px;color:var(--ink-2);letter-spacing:.04em}

/* ============================================
   联系我们
   ============================================ */
.contact{
  padding:var(--section-py) 0;
  background:linear-gradient(180deg, #0a0a0c 0%, #1d1d1f 100%);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.contact::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(60% 60% at 90% 0%, rgba(10,77,140,.3), transparent 60%),
    radial-gradient(50% 50% at 0% 100%, rgba(90,166,232,.12), transparent 60%);
}
.contact-inner{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:clamp(40px, 6vw, 80px);
  align-items:start;
  position:relative;z-index:1;
}
.contact-text{max-width:520px}
.contact-list{
  margin-top:36px;
  display:flex;flex-direction:column;gap:18px;
}
.contact-list li{
  display:flex;align-items:flex-start;gap:14px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.contact-list li:last-child{border-bottom:none}
.contact-ico{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);
  border-radius:10px;
  font-size:16px;flex:none;
}
.contact-list b{
  display:block;
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(235,235,240,.55);
  font-weight:600;margin-bottom:4px;
}
.contact-list span,
.contact-list a{
  font-size:15px;color:#fff;font-weight:500;
  word-break:break-all;
}
.contact-list a{color:#5aa6e8}
.contact-list a:hover{color:#fff}

.contact-form{
  padding:36px 32px 32px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.form-row{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  margin-bottom:14px;
}
.contact-form label{
  display:flex;flex-direction:column;gap:6px;
  font-size:12px;font-weight:600;
  color:rgba(235,235,240,.7);
  letter-spacing:.06em;
  margin-bottom:14px;
}
.contact-form label span{color:#ff6b6b}
.contact-form input,
.contact-form select,
.contact-form textarea{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  padding:12px 14px;
  color:#fff;
  font-size:15px;font-weight:400;
  outline:none;
  transition:border-color .2s, background .2s;
  font-family:inherit;
}
.contact-form select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg, transparent 50%, rgba(255,255,255,.6) 50%), linear-gradient(135deg, rgba(255,255,255,.6) 50%, transparent 50%);background-position:calc(100% - 18px) 18px, calc(100% - 13px) 18px;background-size:5px 5px;background-repeat:no-repeat;padding-right:36px}
.contact-form select option{
  color:#6b7280;
  background:#fff;
}
.contact-form textarea{resize:vertical;min-height:90px;font-family:inherit}
.contact-form input::placeholder,
.contact-form textarea::placeholder{color:rgba(255,255,255,.3)}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  border-color:var(--accent);
  background:rgba(255,255,255,.1);
}
.form-tip{
  margin-top:12px;
  font-size:12px;
  text-align:center;
  color:rgba(235,235,240,.5);
  letter-spacing:.04em;
}
.form-tip.is-success{color:#5be38a;font-weight:500}

/* ============================================
   页脚
   ============================================ */
.footer{
  background:#0a0a0c;
  color:rgba(255,255,255,.7);
  padding:64px 0 0;
  font-size:14px;
}
.footer-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:56px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-logo{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:600;color:#fff;margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-brand p{margin-bottom:6px;line-height:1.6}
.footer-addr{color:rgba(255,255,255,.5);font-size:13px}
.footer-col h4{
  font-size:12px;font-weight:600;
  color:#fff;letter-spacing:.16em;text-transform:uppercase;
  margin-bottom:18px;
}
.footer-col a,
.footer-col span{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.65);
  margin-bottom:10px;
  transition:color .2s;
}
.footer-col a:hover{color:#fff}
.footer-bottom{padding:22px 0}
.footer-bottom-inner{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:10px;
  font-size:12px;
  color:rgba(255,255,255,.45);
  letter-spacing:.04em;
}

/* ============================================
   视频灯箱
   ============================================ */
.video-modal{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;
  pointer-events:none;
  transition:opacity .35s var(--ease);
}
.video-modal[hidden]{display:none}
.video-modal.is-open{opacity:1;pointer-events:auto}
.video-modal-backdrop{
  position:absolute;inset:0;
  background:rgba(8,10,14,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.video-modal-dialog{
  position:relative;
  width:100%;max-width:1100px;
  max-height:calc(100vh - 48px);
  background:#0a0a0c;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:0 40px 100px -20px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.06);
  display:flex;flex-direction:column;
  transform:scale(.94) translateY(10px);
  transition:transform .4s var(--ease);
}
.video-modal.is-open .video-modal-dialog{transform:none}
.video-modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
  flex:none;gap:16px;
}
.video-modal-title{
  font-size:15px;font-weight:600;color:#fff;
  letter-spacing:.01em;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  margin:0;
}
.video-modal-close{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:22px;line-height:1;
  transition:background .2s var(--ease), transform .3s var(--ease);
  flex:none;cursor:pointer;border:none;
}
.video-modal-close:hover{background:rgba(255,255,255,.18);transform:rotate(90deg)}
.video-modal-body{
  position:relative;
  background:#000;
  flex:1 1 auto;min-height:0;
}
.video-modal-body video{
  display:block;width:100%;
  max-height:calc(100vh - 140px);
  aspect-ratio:16/9;
  object-fit:contain;background:#000;
}
body.modal-open{overflow:hidden}

/* 卡片可点击播放 */
.reel-card.is-playable{cursor:pointer}

/* poster-card 作为 button 的重置 */
button.poster-card{
  width:100%;text-align:left;font:inherit;
  cursor:pointer;padding:0;border:none;color:inherit;
}

@media (max-width: 560px){
  .video-modal{padding:0}
  .video-modal-dialog{border-radius:0;max-height:100vh;height:100vh}
  .video-modal-body video{max-height:calc(100vh - 56px);aspect-ratio:auto;min-height:50vh}
  .video-modal-head{padding:10px 14px}
  .video-modal-title{font-size:14px}
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1080px){
  .feature .container{gap:48px}
  .partners-grid{grid-template-columns:repeat(2,1fr)}
  .works-grid{grid-template-columns:repeat(4,1fr)}
  .work-card{grid-column:span 2}
  .work-card-lg{grid-column:span 4}
  .reel-grid{grid-template-columns:repeat(2,1fr)}
  .reel-list ul{grid-template-columns:1fr}
}

@media (max-width: 860px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:flex}
  .nav{padding-right:0}
  .feature .container{grid-template-columns:1fr;gap:40px}
  .feature-text{max-width:none}
  .feature-list{grid-template-columns:1fr 1fr}
  .about-inner{grid-template-columns:1fr;gap:40px}
  .about-stats{grid-template-columns:repeat(4,1fr)}
  .contact-inner{grid-template-columns:1fr;gap:40px}
  .process-steps{grid-template-columns:repeat(2,1fr);gap:16px}
  .process-steps::before{display:none}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{margin-bottom:44px}
  .works-grid{grid-template-columns:1fr 1fr;gap:16px}
  .work-card{grid-column:span 1}
  .work-card-lg{grid-column:span 2}
  .works-more{margin-top:36px}
  .partners-grid{grid-template-columns:1fr 1fr;gap:14px}
  .reel-grid{grid-template-columns:1fr;gap:16px}
  .hide-sm{display:none}
}

@media (max-width: 560px){
  :root{--gutter:18px;--section-py:72px}
  .display{font-size:42px;white-space:normal}
  .title{font-size:34px}
  .feature-list{grid-template-columns:1fr;gap:10px}
  .form-row{grid-template-columns:1fr;gap:0;margin-bottom:0}
  .contact-form{padding:24px 20px 20px}
  .about-stats{grid-template-columns:1fr 1fr;gap:10px}
  .stat-num{font-size:24px}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .partners-grid{grid-template-columns:1fr}
  .works-grid{grid-template-columns:1fr;gap:14px}
  .work-card-lg{grid-column:span 1}
  .poster-grid{grid-template-columns:1fr 1fr;gap:12px}
  .poster-meta{padding:12px 12px 14px}
  .poster-meta h4{font-size:13px}
  .nav-logo-en{display:none}
  .nav-logo-zh{font-size:15px}
  .process-steps{grid-template-columns:1fr}
}