:root{
  --bg:#05070f;
  --bg-2:#0a0e1c;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.08);
  --border-hi:rgba(34,211,238,.45);
  --text:#e8ecf5;
  --text-2:#9aa4bd;
  --text-3:#6b7590;
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --grad:linear-gradient(120deg,#22d3ee 0%,#3b82f6 45%,#8b5cf6 100%);
  --radius:18px;
  --maxw:1200px;
  --font:"Inter","PingFang HK","PingFang TC","Microsoft JhengHei","Noto Sans TC","Noto Sans HK",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block}
::selection{background:rgba(34,211,238,.3)}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:var(--mono)}

/* 背景網格 + 光暈 */
.bg-grid{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%)}
.glow{position:absolute;border-radius:50%;filter:blur(110px);pointer-events:none;z-index:-1;opacity:.55}

/* 導航 */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(5,7,15,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom-color:var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.02em}
.brand-logo{width:34px;height:34px}
.brand-name{font-size:17px;line-height:1.15}
.brand-name small{display:block;white-space:nowrap;font-size:9.5px;font-weight:500;color:var(--text-3);letter-spacing:.06em;font-family:var(--mono)}
.nav-links{display:flex;gap:34px;font-size:14.5px;color:var(--text-2)}
.nav-links a{position:relative;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--grad);transition:width .25s}
.nav-links a:hover::after{width:100%}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-size:14.5px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:0;font-family:inherit}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 30px -8px rgba(59,130,246,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(139,92,246,.7)}
.btn-ghost{background:var(--surface);border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(255,255,255,.18)}
.nav .btn{padding:9px 18px;font-size:13.5px}
.nav-right{display:flex;align-items:center;gap:14px}
.lang{display:flex;align-items:center;padding:3px;border:1px solid var(--border);border-radius:999px;background:rgba(10,14,28,.55);font-size:12.5px;font-weight:600}
.lang a{padding:5px 11px;border-radius:999px;color:var(--text-3);transition:color .2s,background .2s;line-height:1.2}
.lang a:hover{color:var(--text)}
.lang a.on{background:var(--surface-2);color:var(--text);box-shadow:0 0 0 1px rgba(34,211,238,.35) inset}
.mail-img{display:inline-block;line-height:0;margin-top:3px}
.mail-img img{height:20px;width:auto}
.foot-grid .mail-img img{height:17px;opacity:.6;transition:opacity .2s}
.foot-grid .mail-img:hover img{opacity:1}
.menu-btn{display:none;background:none;border:0;color:var(--text);width:40px;height:40px;cursor:pointer}

/* Hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:120px 0 80px;overflow:hidden}
.hero>.container{width:100%;min-width:0}
#neural{position:absolute;inset:0;width:100%;height:100%;z-index:-1}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.hero-inner>*,.ai-layout>*,.services-feature>*,.services-more>*,.contact-box>*{min-width:0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 8px;border:1px solid var(--border);border-radius:999px;background:rgba(10,14,28,.6);backdrop-filter:blur(8px);font-size:12.5px;color:var(--text-2);margin-bottom:28px}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.18);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(34,211,238,0)}}
.hero h1{font-size:clamp(34px,5.2vw,66px);line-height:1.08;font-weight:800;letter-spacing:-.02em;margin-bottom:24px}
.hero p.lead{font-size:clamp(16px,1.6vw,19px);color:var(--text-2);max-width:560px;margin-bottom:40px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.typed-line{display:block;min-height:1.7em;margin:6px 0}
.typed{font-family:var(--mono);color:var(--cyan)}
.typed::after{content:"▋";margin-left:2px;animation:blink 1s steps(1) infinite;color:var(--violet)}
@keyframes blink{50%{opacity:0}}

/* Hero 終端卡片 */
.terminal{border:1px solid var(--border);border-radius:var(--radius);background:linear-gradient(180deg,rgba(15,20,38,.85),rgba(8,11,22,.9));backdrop-filter:blur(14px);box-shadow:0 30px 80px -20px rgba(0,0,0,.7),0 0 0 1px rgba(34,211,238,.06) inset;overflow:hidden;transform:perspective(1200px) rotateY(-6deg) rotateX(3deg);transition:transform .6s}
.terminal:hover{transform:perspective(1200px) rotateY(0) rotateX(0)}
.term-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border);font-family:var(--mono);font-size:12px;color:var(--text-3)}
.term-bar i{width:11px;height:11px;border-radius:50%;display:block}
.term-bar span{margin-left:10px}
.term-body{padding:20px 22px;font-family:var(--mono);font-size:13px;line-height:1.9;min-height:292px}
.term-body .l{white-space:pre-wrap;word-break:break-word;opacity:0;transform:translateY(4px);transition:opacity .35s,transform .35s}
.term-body .l.on{opacity:1;transform:none}
.c-p{color:var(--violet)} .c-c{color:var(--cyan)} .c-g{color:#4ade80} .c-d{color:var(--text-3)} .c-y{color:#fbbf24}
.bar{display:inline-block;height:8px;border-radius:4px;background:var(--grad);vertical-align:middle;margin:0 8px;transition:width 1.2s ease}

.scroll-hint{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);font-size:11px;letter-spacing:.3em;color:var(--text-3);display:flex;flex-direction:column;align-items:center;gap:10px;font-family:var(--mono)}
.scroll-hint::after{content:"";width:1px;height:36px;background:linear-gradient(var(--cyan),transparent);animation:drop 2s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* 通用 section */
section{position:relative;padding:120px 0}
.sec-head{max-width:720px;margin-bottom:64px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{font-family:var(--mono);font-size:12.5px;letter-spacing:.2em;color:var(--cyan);margin-bottom:16px;display:inline-flex;align-items:center;gap:10px}
.sec-tag::before{content:"";width:24px;height:1px;background:var(--cyan)}
.sec-head h2{font-size:clamp(30px,4vw,46px);line-height:1.2;font-weight:800;letter-spacing:-.015em;margin-bottom:18px}
.sec-head p{color:var(--text-2);font-size:17px}

/* 關鍵能力條 */
.strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(10,14,28,.5);padding:0}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:34px 28px;border-right:1px solid var(--border)}
.strip-item:last-child{border-right:0}
.strip-item b{display:block;font-size:26px;font-weight:800;margin-bottom:4px}
.strip-item span{color:var(--text-2);font-size:14px}

/* 卡片 */
.card{position:relative;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:34px;transition:transform .35s,border-color .35s,background .35s;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(34,211,238,.12),transparent 45%);opacity:0;transition:opacity .35s;pointer-events:none}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.3);background:var(--surface-2)}
.card:hover::before{opacity:1}
.icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(34,211,238,.15),rgba(139,92,246,.15));border:1px solid rgba(34,211,238,.25);margin-bottom:24px;color:var(--cyan)}
.icon svg{width:26px;height:26px}
.card h3{font-size:21px;font-weight:700;margin-bottom:12px}
.card p{color:var(--text-2);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tags span{font-family:var(--mono);font-size:11.5px;padding:4px 10px;border-radius:6px;background:rgba(255,255,255,.04);border:1px solid var(--border);color:var(--text-2)}

.services-feature{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-bottom:22px}
.services-more{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.services-more .card{padding:28px}
.services-more .card h3{font-size:18px}
.services-more .card p{font-size:14.5px}
.card.feature{display:flex;flex-direction:column;padding:40px;background:linear-gradient(160deg,rgba(34,211,238,.08),rgba(139,92,246,.08) 60%,rgba(255,255,255,.02));border-color:rgba(34,211,238,.22)}
.feature .big-num{font-family:var(--mono);font-size:13px;color:var(--cyan);margin-bottom:28px}
.feature h3{font-size:28px}
.feature ul{list-style:none;margin-top:22px;display:grid;gap:12px}
.feature li{display:flex;gap:12px;color:var(--text-2);font-size:15px}
.feature li::before{content:"";flex:0 0 6px;height:6px;margin-top:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.feature .tags{margin-top:auto;padding-top:26px}

/* AI 能力 */
.ai{background:linear-gradient(180deg,transparent,rgba(59,130,246,.04) 30%,rgba(139,92,246,.05) 70%,transparent)}
.ai-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:64px;align-items:center}
.ai-list{display:grid;gap:14px}
.ai-item{display:flex;gap:18px;padding:20px 22px;border-radius:14px;border:1px solid transparent;cursor:pointer;transition:all .3s}
.ai-item:hover{background:var(--surface)}
.ai-item.active{background:var(--surface-2);border-color:var(--border-hi)}
.ai-item .n{font-family:var(--mono);font-size:13px;color:var(--text-3);padding-top:3px}
.ai-item.active .n{color:var(--cyan)}
.ai-item h4{font-size:17.5px;font-weight:700;margin-bottom:4px}
.ai-item p{color:var(--text-2);font-size:14.5px}
.ai-visual{position:relative;aspect-ratio:1/1;max-width:520px;width:100%;margin-left:auto;border-radius:24px;border:1px solid var(--border);background:radial-gradient(circle at 50% 50%,rgba(59,130,246,.12),transparent 65%),rgba(8,11,22,.6);overflow:hidden}
.ai-visual svg{width:100%;height:100%}
.orbit{transform-origin:260px 260px;animation:spin 40s linear infinite}
.orbit.r{animation-direction:reverse;animation-duration:60s}
@keyframes spin{to{transform:rotate(360deg)}}
.ai-caption{position:absolute;left:20px;right:20px;bottom:20px;padding:14px 18px;border-radius:12px;background:rgba(5,7,15,.75);backdrop-filter:blur(10px);border:1px solid var(--border);font-family:var(--mono);font-size:12.5px;color:var(--text-2);min-height:48px}
.ai-caption b{color:var(--cyan);font-weight:500}

/* 流程 */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative}
.process::before{content:"";position:absolute;top:27px;left:6%;right:6%;height:1px;background:linear-gradient(90deg,transparent,var(--border-hi),rgba(139,92,246,.45),transparent)}
.step{position:relative;text-align:center;padding:0 6px}
.step .dot{width:56px;height:56px;margin:0 auto 22px;border-radius:50%;display:grid;place-items:center;background:var(--bg-2);border:1px solid var(--border-hi);font-family:var(--mono);font-size:14px;color:var(--cyan);box-shadow:0 0 0 6px var(--bg),0 0 30px -4px rgba(34,211,238,.4)}
.step h4{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2)}

/* 優勢 */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-grid .card{padding:30px}
.why-grid .card h3{font-size:18.5px}

/* 行業 */
.industry{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:56px}
.industry span{padding:10px 20px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);font-size:14.5px;transition:all .25s}
.industry span:hover{color:var(--text);border-color:var(--border-hi);background:rgba(34,211,238,.06)}

/* 技術棧跑馬燈 */
.marquee{overflow:hidden;padding:26px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:56px;width:max-content;animation:marquee 40s linear infinite;font-family:var(--mono);font-size:15px;color:var(--text-3)}
.marquee-track span{white-space:nowrap;transition:color .2s}
.marquee-track span:hover{color:var(--cyan)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* 聯繫 */
.contact-box{display:grid;grid-template-columns:1fr 1.1fr;gap:0;border:1px solid var(--border);border-radius:28px;overflow:hidden;background:rgba(10,14,28,.7)}
.contact-info{padding:52px;background:linear-gradient(160deg,rgba(34,211,238,.1),rgba(139,92,246,.12));position:relative;overflow:hidden}
.contact-info h2{font-size:clamp(28px,3.4vw,38px);line-height:1.25;font-weight:800;margin-bottom:16px}
.contact-info>p{color:var(--text-2);margin-bottom:40px}
.ci-row{display:flex;gap:16px;align-items:flex-start;margin-bottom:24px}
.ci-row .icon{width:44px;height:44px;margin:0;flex:0 0 44px;border-radius:12px}
.ci-row .icon svg{width:20px;height:20px}
.ci-row small{display:block;color:var(--text-3);font-size:12.5px;letter-spacing:.05em}
.ci-row div>span{font-size:15.5px;overflow-wrap:anywhere}
.contact-form{padding:52px;display:grid;gap:18px;align-content:start}
.field{display:grid;gap:8px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field select,.field textarea{width:100%;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:12px;padding:13px 16px;color:var(--text);font-family:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s;outline:none}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%239aa4bd' stroke-width='1.6'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.field select option{background:#0a0e1c}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.12)}
.form-note{font-size:12.5px;color:var(--text-3)}

/* 頁腳 */
footer{border-top:1px solid var(--border);padding:56px 0 36px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-grid p{color:var(--text-3);font-size:14px;margin-top:18px;max-width:320px}
.foot-grid h5{font-size:13px;letter-spacing:.12em;color:var(--text-2);margin-bottom:16px;font-weight:600}
.foot-grid ul{list-style:none;display:grid;gap:10px;font-size:14px;color:var(--text-3)}
.foot-grid a:hover{color:var(--cyan)}
.copyright{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:28px;border-top:1px solid var(--border);color:var(--text-3);font-size:13px}

/* 進場動畫 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* 響應式 */
@media (max-width:1024px){
  .hero-inner,.ai-layout{grid-template-columns:1fr}
  .terminal{transform:none;max-width:560px}
  .ai-visual{margin:0 auto;max-width:460px}
  .why-grid,.services-more{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr);row-gap:44px}
  .process::before{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .nav-links,.nav .btn{display:none}
  .nav-right{gap:8px}
  .menu-btn{display:grid;place-items:center}
  .nav.open{background:rgba(5,7,15,.96);backdrop-filter:blur(16px)}
  .nav.open .nav-links{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;padding:12px 24px 28px;gap:0;background:rgba(5,7,15,.96);border-bottom:1px solid var(--border)}
  .nav.open .nav-links a{padding:14px 0;border-bottom:1px solid var(--border);font-size:16px}
  .services-feature{grid-template-columns:1fr}
  .card.feature{padding:30px}
  .strip-grid{grid-template-columns:repeat(2,1fr)}
  .strip-item:nth-child(2){border-right:0}
  .strip-item:nth-child(-n+2){border-bottom:1px solid var(--border)}
  .contact-box{grid-template-columns:1fr}
  .contact-info,.contact-form{padding:36px 28px}
}
@media (max-width:560px){
  .nav .brand-name small{display:none}
  .container{padding:0 16px}
  section{padding:84px 0}
  .why-grid,.services-more,.process,.field-row,.foot-grid{grid-template-columns:1fr}
  .card{padding:26px}
  .strip-item{padding:24px 18px}
  .strip-item b{font-size:21px}
  .term-body{font-size:11.5px;padding:16px;min-height:250px}
  .scroll-hint{display:none}
  .contact-info,.contact-form{padding:30px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}