/* =========================================================
   Sengemedia - 森格環球有限公司 · 新版官網
   風格: 暗色基調 + 紫红橙渐變 + 動態全屏背景
   主營: 短劇投流發行 + AI 內容生产
   ========================================================= */
* { box-sizing: border-box; margin: 0; padding: 0;}
:root{
  --c-bg-0: #07050d;
  --c-bg-1: #0d0820;
  --c-bg-2: #150d2e;
  --c-bg-3: #1d1238;
  --c-line: rgba(255,255,255,.08);
  --c-line-2: rgba(255,255,255,.12);
  --c-text: #f5f3ff;
  --c-text-2: #c4b5fd;
  --c-text-3: #94a3b8;
  --c-text-4: #64748b;
  --c-purple: #a855f7;
  --c-purple-2: #7c3aed;
  --c-pink: #ec4899;
  --c-orange: #f97316;
  --c-amber: #fbbf24;
  --c-cyan: #06b6d4;
  --c-red: #ef4444;
  --c-grad: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6d28d9 100%);
  --c-grad-2: linear-gradient(135deg, #f97316 0%, #ec4899 50%, #a855f7 100%);
  --c-grad-3: linear-gradient(135deg, #06b6d4 0%, #a855f7 100%);
  --shadow-1: 0 4px 16px rgba(168,85,247,.15);
  --shadow-2: 0 12px 40px rgba(168,85,247,.25);
  --shadow-3: 0 24px 60px rgba(0,0,0,.5);
  --radius: 14px;
  --radius-2: 22px;
}

html, body{
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  background: var(--c-bg-0);
  color: var(--c-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; transition: all .25s ease;}
img{ max-width: 100%; display: block;}
button{ font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit;}
::selection{ background: var(--c-purple); color: #fff;}

/* 動畫關鍵帧 */
@keyframes glow{
  0%,100%{ box-shadow: 0 0 40px rgba(168,85,247,.4);}
  50%{ box-shadow: 0 0 80px rgba(236,72,153,.6);}
}
@keyframes aurora{
  0%{ transform: translate3d(-50%, -50%, 0) rotate(0deg) scale(1);}
  50%{ transform: translate3d(-50%, -50%, 0) rotate(180deg) scale(1.1);}
  100%{ transform: translate3d(-50%, -50%, 0) rotate(360deg) scale(1);}
}
@keyframes float-y{
  0%,100%{ transform: translateY(0);}
  50%{ transform: translateY(-12px);}
}
@keyframes marquee{
  0%{ transform: translateX(0);}
  100%{ transform: translateX(-50%);}
}
@keyframes scroll-fade{
  from{ opacity: 0; transform: translateY(40px);}
  to{ opacity: 1; transform: translateY(0);}
}
@keyframes pulse-dot{
  0%,100%{ opacity: 1; transform: scale(1);}
  50%{ opacity: .4; transform: scale(1.4);}
}
@keyframes shine{
  0%{ background-position: 0% 50%;}
  100%{ background-position: 200% 50%;}
}
@keyframes grid-bg{
  0%{ background-position: 0 0;}
  100%{ background-position: 60px 60px;}
}

.fade-up{ animation: scroll-fade .8s cubic-bezier(.2,.8,.2,1) both;}
.delay-1{ animation-delay: .15s;}
.delay-2{ animation-delay: .3s;}
.delay-3{ animation-delay: .45s;}
.delay-4{ animation-delay: .6s;}

/* ==== 導航栏 ==== */
.topbar{
  position: sticky; top: 0; z-index: 80;
  background: rgba(7, 5, 13, .65);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-line);
}
.topbar .container{
  max-width: 1320px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; padding: 0 28px;
}
.brand{ display: flex; align-items: center; gap: 12px;}
.brand .mark{
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--c-grad);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 19px; letter-spacing: -.5px;
  box-shadow: 0 0 30px rgba(168,85,247,.5);
}
.brand .name{
  font-size: 19px; font-weight: 800; letter-spacing: .3px;
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.brand .name small{
  display: block; font-size: 10px; letter-spacing: 3px; font-weight: 600;
  -webkit-text-fill-color: var(--c-text-3); background: none; opacity: .6;
}
.nav-links{ display: flex; gap: 8px; align-items: center;}
.nav-links a{
  padding: 9px 18px; font-size: 14px; font-weight: 500;
  color: var(--c-text-3); border-radius: 30px;
}
.nav-links a:hover{ color: #fff; background: rgba(255,255,255,.05);}
.nav-links a.active{ color: #fff; background: rgba(168,85,247,.18);}
.nav-cta{
  padding: 10px 22px; border-radius: 30px; font-weight: 700;
  background: var(--c-grad-2);
  color: #fff !important; font-size: 13px;
  box-shadow: 0 6px 20px rgba(236,72,153,.4);
}
.nav-cta:hover{ transform: translateY(-1px); box-shadow: 0 10px 26px rgba(236,72,153,.55);}

/* 移動端菜單 */
.menu-btn{ display: none; flex-direction: column; gap: 4px; padding: 8px;}
.menu-btn span{ display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px;}
@media (max-width: 960px){
  .nav-links, .nav-cta{ display: none;}
  .menu-btn{ display: flex;}
}

/* ==== 通用容器 ==== */
.container{ max-width: 1320px; margin: 0 auto; padding: 0 28px;}

/* ==== 按钮 ==== */
.btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 40px; font-weight: 700; font-size: 15px;
  transition: all .3s cubic-bezier(.2,.8,.2,1);
  letter-spacing: .3px;
}
.btn-grad{ background: var(--c-grad-2); color: #fff; box-shadow: 0 10px 30px rgba(236,72,153,.4);}
.btn-grad:hover{ transform: translateY(-2px); box-shadow: 0 16px 40px rgba(236,72,153,.6);}
.btn-line{ border: 1.5px solid var(--c-line-2); color: #fff; background: rgba(255,255,255,.03);}
.btn-line:hover{ border-color: var(--c-purple); background: rgba(168,85,247,.1);}
.btn-ghost{ padding: 10px 18px; font-size: 13px; border-radius: 30px;}

/* ==== Hero ==== */
.hero{
  position: relative;
  min-height: calc(100vh - 72px);
  padding: 100px 0 60px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(168,85,247,.25), transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(236,72,153,.18), transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(249,115,22,.15), transparent 60%),
    linear-gradient(180deg, var(--c-bg-1) 0%, var(--c-bg-0) 100%);
}
.hero::before{
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(rgba(168,85,247,.06) 1px, transparent 1px) 0 0/60px 60px,
    linear-gradient(90deg, rgba(168,85,247,.06) 1px, transparent 1px) 0 0/60px 60px;
  animation: grid-bg 12s linear infinite;
  opacity: .55;
  mask: linear-gradient(180deg, transparent 0%, #000 30%, #000 80%, transparent 100%);
}
.hero::after{
  content: ''; position: absolute;
  top: 50%; left: 50%;
  width: 800px; height: 800px;
  background: var(--c-grad);
  opacity: .12;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  filter: blur(120px);
  animation: aurora 18s linear infinite;
}
.hero-content{
  position: relative; z-index: 5;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.hero-text{ max-width: 640px;}
.hero-badge{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 30px;
  background: rgba(168,85,247,.12); border: 1px solid rgba(168,85,247,.3);
  font-size: 12px; font-weight: 600; color: var(--c-purple);
  margin-bottom: 24px;
}
.hero-badge .dot{
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-purple); animation: pulse-dot 2s infinite;
}
.hero h1{
  font-size: 64px; font-weight: 900; line-height: 1.05; letter-spacing: -2px;
  margin-bottom: 22px;
}
.hero h1 .grad{
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  display: inline-block;
}
.hero p{
  font-size: 17px; color: var(--c-text-3); max-width: 540px;
  margin-bottom: 36px; line-height: 1.7;
}
.hero-cta{ display: flex; gap: 14px; flex-wrap: wrap;}
.hero-stats{
  position: relative; z-index: 5;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; margin-top: 70px;
  padding: 28px 36px;
  background: linear-gradient(135deg, rgba(168,85,247,.1), rgba(236,72,153,.05));
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius-2);
  backdrop-filter: blur(20px);
}
.hero-stats .stat{ text-align: center;}
.hero-stats .stat .n{
  font-size: 36px; font-weight: 900;
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  display: block;
}
.hero-stats .stat .l{ font-size: 12px; color: var(--c-text-3); margin-top: 4px;}

/* Hero 右侧視頻卡片預覽 */
.hero-card{
  position: relative;
  background: linear-gradient(160deg, rgba(168,85,247,.15), rgba(236,72,153,.08));
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius-2);
  padding: 26px;
  backdrop-filter: blur(20px);
  animation: float-y 6s ease-in-out infinite;
  box-shadow: 0 30px 80px rgba(168,85,247,.3);
}
.hero-card .head{ display: flex; justify-content: space-between; margin-bottom: 18px;}
.hero-card .head .tag{
  padding: 4px 10px; font-size: 11px; font-weight: 700;
  background: var(--c-grad);
  border-radius: 30px; color: #fff; letter-spacing: 1px;
}
.hero-card .head .live{ font-size: 11px; color: var(--c-amber); font-weight: 700;}
.hero-card .frame{
  position: relative;
  aspect-ratio: 9/14;
  border-radius: 14px;
  background: linear-gradient(135deg, #1f1147, #4a1d6e);
  overflow: hidden;
  display: flex; align-items: flex-end;
  padding: 20px;
}
.hero-card .frame::before{
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(236,72,153,.7), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(168,85,247,.7), transparent 50%);
  filter: blur(20px);
}
.hero-card .frame .overlay{ position: relative; z-index: 2; color: #fff;}
.hero-card .frame .overlay .ttl{ font-size: 18px; font-weight: 800;}
.hero-card .frame .overlay .sub{ font-size: 12px; opacity: .8; margin-top: 4px;}
.hero-card .frame .play{
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 60px; height: 60px; border-radius: 50%;
  background: rgba(255,255,255,.2);
  border: 2px solid rgba(255,255,255,.4);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff;
  backdrop-filter: blur(10px);
  z-index: 3;
  animation: glow 3s infinite;
}
.hero-card .meta{
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 10px; margin-top: 18px; text-align: center;
}
.hero-card .meta div{
  padding: 12px 8px;
  background: rgba(255,255,255,.04);
  border-radius: 10px;
}
.hero-card .meta .lbl{ font-size: 11px; color: var(--c-text-3); margin-bottom: 3px;}
.hero-card .meta .val{ font-size: 16px; font-weight: 800; color: #fff;}

/* 滚動合作伙伴 / 数字 */
.brand-marquee{
  padding: 40px 0; overflow: hidden;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  background: linear-gradient(180deg, var(--c-bg-1), transparent);
}
.brand-marquee .track{
  display: flex; gap: 80px; width: max-content;
  animation: marquee 30s linear infinite;
}
.brand-marquee .item{
  font-size: 22px; font-weight: 800; letter-spacing: 1px;
  color: var(--c-text-4); white-space: nowrap;
  display: flex; align-items: center; gap: 14px;
}
.brand-marquee .item::before{
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-grad); flex: none;
}

/* ==== 通用区块 ==== */
.section{
  position: relative;
  padding: 110px 0;
  overflow: hidden;
}
.section.tight{ padding: 70px 0;}
.section-head{ text-align: center; max-width: 720px; margin: 0 auto 60px;}
.section-head .pre{
  display: inline-block; padding: 6px 16px;
  background: rgba(168,85,247,.12);
  border: 1px solid rgba(168,85,247,.3);
  border-radius: 30px; font-size: 12px; font-weight: 700;
  color: var(--c-purple); letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 16px;
}
.section-head h2{
  font-size: 48px; font-weight: 900; line-height: 1.1; letter-spacing: -1.5px;
  margin-bottom: 16px;
}
.section-head h2 .grad{
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.section-head p{
  font-size: 16px; color: var(--c-text-3);
}

/* ==== 業務模块 ==== */
.biz-grid{
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.biz-card{
  position: relative;
  padding: 36px 28px;
  background: linear-gradient(160deg, rgba(168,85,247,.08), rgba(13,8,32,.9));
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius-2);
  transition: all .4s cubic-bezier(.2,.8,.2,1);
  overflow: hidden;
}
.biz-card::before{
  content: ''; position: absolute; top: -100%; right: -50%;
  width: 300px; height: 300px;
  background: var(--c-grad);
  opacity: 0; border-radius: 50%; filter: blur(80px);
  transition: opacity .4s ease;
}
.biz-card:hover{ transform: translateY(-6px); border-color: var(--c-purple);}
.biz-card:hover::before{ opacity: .15;}
.biz-card .ic{
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--c-grad);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 24px;
}
.biz-card h3{ font-size: 22px; font-weight: 800; margin-bottom: 12px;}
.biz-card p{ color: var(--c-text-3); font-size: 14px; line-height: 1.7; margin-bottom: 18px;}
.biz-card .tags{
  display: flex; flex-wrap: wrap; gap: 6px;
}
.biz-card .tags span{
  padding: 3px 10px; font-size: 11px; border-radius: 30px;
  background: rgba(168,85,247,.18); color: var(--c-purple);
}

/* ==== 数據展示 ==== */
.metrics{
  position: relative;
  background:
    radial-gradient(ellipse at top, rgba(168,85,247,.2), transparent 60%),
    linear-gradient(180deg, var(--c-bg-2), var(--c-bg-1));
  border-top: 1px solid var(--c-line-2);
  border-bottom: 1px solid var(--c-line-2);
  padding: 90px 0;
}
.metrics .grid{
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.metric{
  text-align: center; padding: 30px 20px;
  border-right: 1px solid var(--c-line);
}
.metric:last-child{ border-right: 0;}
.metric .n{
  font-size: 56px; font-weight: 900;
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -2px;
}
.metric .n small{ font-size: 22px; vertical-align: top; opacity: .8;}
.metric .l{
  margin-top: 10px;
  font-size: 14px; color: var(--c-text-3);
  text-transform: uppercase; letter-spacing: 2px;
}

/* ==== 案例展示 ==== */
.work-tabs{
  display: flex; justify-content: center; gap: 8px; margin-bottom: 40px; flex-wrap: wrap;
}
.work-tabs .tab{
  padding: 10px 22px; border-radius: 30px;
  background: rgba(255,255,255,.04); border: 1px solid var(--c-line);
  color: var(--c-text-3); font-weight: 600; cursor: pointer;
  transition: all .25s ease;
}
.work-tabs .tab.active{
  background: var(--c-grad); color: #fff; border-color: transparent;
}
.work-tabs .tab:hover:not(.active){ color: #fff; border-color: var(--c-purple);}

.work-grid{
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.work-card{
  position: relative; aspect-ratio: 9/16;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .4s ease;
}
.work-card:hover{ transform: translateY(-6px) scale(1.01);}
.work-card .cover{
  position: absolute; inset: 0;
  display: flex; align-items: flex-end; padding: 24px;
  color: #fff;
}
.work-card .cover::before{
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,.85) 100%);
}
.work-card .info{ position: relative; z-index: 2;}
.work-card .info .tag{
  display: inline-block; padding: 3px 10px; border-radius: 30px;
  background: rgba(255,255,255,.2); backdrop-filter: blur(10px);
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  margin-bottom: 10px;
}
.work-card .info .ttl{ font-size: 18px; font-weight: 800; line-height: 1.3;}
.work-card .info .sub{ font-size: 12px; opacity: .8; margin-top: 4px;}
.work-card .info .views{
  position: absolute; top: 16px; left: 16px;
  display: flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 30px;
  background: rgba(0,0,0,.4); backdrop-filter: blur(10px);
  font-size: 11px; font-weight: 600;
}
.work-card .info .views .dot{
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-red);
  animation: pulse-dot 1.2s infinite;
}

/* ==== 流程 ==== */
.process{
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 20px; margin-top: 40px;
  position: relative;
}
.process::before{
  content: ''; position: absolute;
  top: 50%; left: 5%; right: 5%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-purple), var(--c-pink), var(--c-orange));
  opacity: .4;
  z-index: 0;
}
.process .step{
  position: relative; z-index: 2;
  text-align: center;
}
.process .step .num-circle{
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--c-grad);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 900; margin: 0 auto 16px;
  box-shadow: 0 10px 30px rgba(168,85,247,.5);
}
.process .step h4{ font-size: 16px; font-weight: 800; margin-bottom: 8px;}
.process .step p{ font-size: 13px; color: var(--c-text-3);}

/* ==== 資质：客戶名 + 平臺战绩 ==== */
.platform-grid{
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.platform-card{
  padding: 28px 22px;
  text-align: center;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: all .25s ease;
}
.platform-card:hover{ border-color: var(--c-purple); transform: translateY(-4px); background: rgba(168,85,247,.06);}
.platform-card .pic{
  width: 56px; height: 56px; border-radius: 14px;
  margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
}
.platform-card .name{ font-size: 16px; font-weight: 800; margin-bottom: 6px;}
.platform-card .meta{ font-size: 12px; color: var(--c-text-3);}

/* ==== 關于 ==== */
.about-grid{
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.about-card{
  position: relative;
  border-radius: var(--radius-2);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #2a1450, #150828);
}
.about-card::before{
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(236,72,153,.6), transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(168,85,247,.6), transparent 40%);
  filter: blur(40px);
}
.about-card .floater{
  position: absolute; bottom: 30px; left: 30px; right: 30px;
  background: rgba(7,5,13,.7);
  backdrop-filter: blur(20px);
  border: 1px solid var(--c-line-2);
  border-radius: 14px;
  padding: 20px 22px;
}
.about-card .floater .lbl{
  font-size: 11px; color: var(--c-text-3); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 8px;
}
.about-card .floater b{
  font-size: 22px; font-weight: 800;
}

/* ==== 聯系頁 ==== */
.contact-grid{
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: 40px;
}
.contact-cards{
  display: grid; gap: 16px;
}
.contact-card{
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(168,85,247,.08), transparent);
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius);
  transition: all .25s ease;
}
.contact-card:hover{ border-color: var(--c-purple); transform: translateY(-2px);}
.contact-card .ic{
  width: 50px; height: 50px; border-radius: 12px;
  background: var(--c-grad);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex: none;
}
.contact-card .info b{ font-size: 14px; color: var(--c-text-3); font-weight: 600;}
.contact-card .info .val{ font-size: 16px; font-weight: 700; margin-top: 3px;}

.contact-form{
  padding: 36px;
  background: linear-gradient(160deg, rgba(168,85,247,.06), transparent);
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius-2);
}
.contact-form h3{ font-size: 24px; font-weight: 800; margin-bottom: 24px;}
.contact-form .row{ display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px;}
.contact-form .field{ margin-bottom: 14px;}
.contact-form label{ display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--c-text-2);}
.contact-form input,
.contact-form select,
.contact-form textarea{
  width: 100%; padding: 12px 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--c-line);
  border-radius: 10px;
  color: #fff; font-family: inherit; font-size: 14px;
  outline: none; transition: border .2s ease;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  border-color: var(--c-purple); background: rgba(168,85,247,.05);
}
.contact-form textarea{ min-height: 110px; resize: vertical;}
.contact-form .submit{
  width: 100%; padding: 14px;
  background: var(--c-grad-2); border-radius: 12px;
  font-weight: 800; font-size: 15px; color: #fff;
  box-shadow: 0 10px 30px rgba(236,72,153,.4);
  transition: all .3s ease;
}
.contact-form .submit:hover{ transform: translateY(-2px); box-shadow: 0 14px 36px rgba(236,72,153,.55);}

/* ==== 頁脚 ==== */
.footer{
  position: relative;
  padding: 80px 0 30px;
  background: linear-gradient(180deg, var(--c-bg-0), #03020a);
  border-top: 1px solid var(--c-line);
  overflow: hidden;
}
.footer::before{
  content: ''; position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 80%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-purple), transparent);
}
.footer-grid{
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 60px;
}
.footer h4{ font-size: 14px; font-weight: 700; margin-bottom: 18px; color: var(--c-text-2);}
.footer ul{ list-style: none;}
.footer ul li{ margin-bottom: 10px;}
.footer ul li a{ font-size: 14px; color: var(--c-text-3);}
.footer ul li a:hover{ color: var(--c-purple);}
.footer p{ color: var(--c-text-3); font-size: 14px; line-height: 1.7;}
.footer .copyright{
  padding-top: 24px; border-top: 1px solid var(--c-line);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--c-text-4); flex-wrap: wrap; gap: 14px;
}

/* ==== 子頁面 hero ==== */
.sub-hero{
  position: relative;
  padding: 120px 0 80px;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(168,85,247,.25), transparent 60%),
    linear-gradient(180deg, var(--c-bg-1), var(--c-bg-0));
  border-bottom: 1px solid var(--c-line);
  text-align: center;
}
.sub-hero h1{
  font-size: 56px; font-weight: 900; margin-bottom: 16px;
  letter-spacing: -1.5px;
}
.sub-hero h1 .grad{
  background: var(--c-grad-2);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.sub-hero p{ font-size: 17px; color: var(--c-text-3); max-width: 720px; margin: 0 auto;}

.crumb{
  display: flex; justify-content: center; gap: 8px;
  margin-top: 28px; font-size: 13px; color: var(--c-text-3);
}
.crumb a:hover{ color: var(--c-purple);}
.crumb .sep{ color: var(--c-text-4);}

/* ==== 响應式 ==== */
@media (max-width: 960px){
  .hero-content, .about-grid, .contact-grid{
    grid-template-columns: 1fr;
  }
  .hero h1{ font-size: 44px;}
  .section-head h2{ font-size: 36px;}
  .sub-hero h1{ font-size: 38px;}
  .biz-grid, .work-grid, .platform-grid{ grid-template-columns: 1fr 1fr;}
  .metrics .grid{ grid-template-columns: 1fr 1fr;}
  .hero-stats{ grid-template-columns: 1fr 1fr;}
  .process{ grid-template-columns: 1fr 1fr;}
  .process::before{ display: none;}
  .footer-grid{ grid-template-columns: 1fr 1fr; gap: 28px;}
  .contact-form .row{ grid-template-columns: 1fr;}
  .section{ padding: 70px 0;}
  .hero{ padding: 60px 0 40px; min-height: auto;}
}
@media (max-width: 620px){
  .biz-grid, .work-grid, .platform-grid{ grid-template-columns: 1fr;}
  .footer-grid{ grid-template-columns: 1fr;}
  .metrics .grid{ grid-template-columns: 1fr 1fr;}
}

/* 工具 */
.text-grad{ background: var(--c-grad-2); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;}

/* 通用toast */
.toast{
  position: fixed; top: 100px; left: 50%; transform: translateX(-50%);
  z-index: 999;
  padding: 14px 26px;
  background: rgba(7,5,13,.9);
  border: 1px solid var(--c-purple);
  border-radius: 50px;
  color: #fff; font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,.5);
  animation: scroll-fade .3s ease;
}