:root{
  --bg:#f8fafc; --bg2:#eef4ff; --card:#fff; --line:#e2e8f0; --fg:#111827; --body:#475569; --mute:#64748b;
  --blue:#2563eb; --blue-d:#1d4ed8; --cyan:#06b6d4; --navy:#0b1220; --navy2:#111b30;
  --sans:system-ui,-apple-system,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(37,99,235,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--blue);color:#fff;padding:8px 12px;z-index:100}
.wrap{max-width:1216px;margin:0 auto;padding:0 24px}
small{font-weight:400;color:var(--mute);font-size:.62em;letter-spacing:.03em}


/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:12px max(24px,calc((100% - 1168px)/2));background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;line-height:1.25}
.brand b{display:block;font-size:1.1rem;color:var(--fg)}
.brand small{display:block;font-size:.72rem}
.brand-mark{width:28px;height:28px;flex:none;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--cyan));position:relative;box-shadow:0 4px 12px rgba(37,99,235,.35)}
.brand-mark::after{content:"";position:absolute;inset:8px;background:#fff;transform:rotate(45deg);border-radius:2px}
.nav nav{display:flex;gap:22px;font-size:.9rem;align-items:center}
.nav nav a{color:#334155;transition:color .2s}.nav nav a:hover{color:var(--blue)}
.nav-cta{background:var(--blue);color:#fff!important;padding:8px 18px;border-radius:8px;font-weight:600;transition:background .2s}
.nav-cta:hover{background:var(--blue-d)}

/* hero */
.hero{position:relative;display:flex;align-items:center;overflow:hidden;min-height:calc(100vh - 68px);min-height:calc(100svh - 68px);
  background:linear-gradient(180deg,#eaf1ff 0%,var(--bg) 100%)}
#fluid{position:absolute;inset:0;width:100%;height:100%}
.hero-grain{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(ellipse at 60% 40%,#000 20%,transparent 75%)}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:88px;display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;pointer-events:none;width:100%}
.hero-inner a{pointer-events:auto}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.74rem;letter-spacing:.06em;color:var(--blue);background:#fff;border:1px solid #bfd4ff;border-radius:999px;padding:6px 14px;margin-bottom:28px;box-shadow:var(--shadow)}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 0 rgba(37,99,235,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(37,99,235,0)}100%{box-shadow:0 0 0 0 rgba(37,99,235,0)}}
h1{font-size:clamp(2.3rem,5.4vw,4.4rem);line-height:1.16;font-weight:800;letter-spacing:-.01em;color:var(--fg)}
h1 em{font-style:normal;background:linear-gradient(90deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.h1-en{color:var(--mute);margin-top:18px;font-size:clamp(.95rem,1.4vw,1.15rem);max-width:46ch}
.lead{max-width:46ch;margin-top:24px;font-size:1.08rem;color:var(--body)}
.btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.btn{display:inline-flex;align-items:baseline;gap:10px;padding:13px 26px;font-weight:600;border:1px solid var(--line);border-radius:10px;background:#fff;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s}
.btn span{font-size:.75rem;font-weight:400;opacity:.8;letter-spacing:.04em}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,99,235,.18)}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d)}
.btn-ghost{color:var(--blue);border-color:#bfd4ff}.btn-ghost:hover{border-color:var(--blue)}

.radar{justify-self:center;width:min(100%,420px);aspect-ratio:1;filter:drop-shadow(0 20px 40px rgba(37,99,235,.18))}
.radar svg{width:100%;height:100%;background:radial-gradient(circle,#fff 0,#f3f7ff 70%);border-radius:50%;border:1px solid #cfe0ff}
.radar .r{fill:none;stroke:#bcd1fb;stroke-width:1}
.radar .sweep{transform-origin:0 0;animation:sw 5s linear infinite}
@keyframes sw{to{transform:rotate(360deg)}}
.radar .dot{fill:var(--cyan);animation:blip 5s infinite}
.radar .d2{animation-delay:-1.5s}.radar .d3{animation-delay:-3s}.radar .d4{animation-delay:-4s}
@keyframes blip{0%,100%{opacity:.25}15%{opacity:1}}

/* sections */
.section{padding:110px 0}
.section:nth-of-type(even){background:#fff;border-block:1px solid var(--line)}
.kicker{display:inline-block;font-size:.76rem;font-weight:600;letter-spacing:.14em;color:var(--blue);background:var(--bg2);border-radius:999px;padding:4px 14px;margin-bottom:18px}
.sec-title{font-size:clamp(1.8rem,3.4vw,2.7rem);font-weight:800;line-height:1.25;margin-bottom:44px}
.sec-lead{color:var(--mute);margin:-28px 0 44px}
.num,.idx{font-variant-numeric:tabular-nums;color:var(--blue);font-weight:800;letter-spacing:.08em}

.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.value,.card,.prod,.steps li{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s,border-color .3s}
.value{padding:32px}
.value:hover,.card:hover,.prod:hover,.steps li:hover{transform:translateY(-4px);border-color:#9db9f5;box-shadow:0 14px 36px rgba(37,99,235,.15)}
.value h2{font-size:1.45rem;margin:12px 0;line-height:1.3}.value h2 small{display:block;margin-top:4px}
.value p{color:var(--body)}
.value .num{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff}

.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{padding:28px 24px;display:flex;flex-direction:column;gap:12px}
.idx{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--bg2)}
.card h3{font-size:1.15rem;line-height:1.4}
.card p{color:var(--body);font-size:.95rem}
.scene{margin-top:auto;padding-top:14px;border-top:1px dashed #cbd5e1;font-size:.85rem!important;color:var(--mute)!important}
.scene b{display:block;color:var(--blue);font-weight:600;font-size:.72rem;letter-spacing:.12em;margin-bottom:4px}

/* rail */
.rail{display:flex;gap:24px;overflow-x:auto;padding:12px max(24px,calc((100% - 1168px)/2)) 28px;scroll-snap-type:x proximity}
.rail::-webkit-scrollbar{height:6px}.rail::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}
.case{flex:0 0 min(560px,86vw);scroll-snap-align:start;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);transition:transform .4s,border-color .3s,box-shadow .3s}
.case:hover{transform:scale(1.025);border-color:var(--blue);box-shadow:0 18px 44px rgba(37,99,235,.2)}
.case-art{aspect-ratio:16/9;background:
  radial-gradient(circle at 25% 35%,rgba(6,182,212,.55),transparent 45%),
  radial-gradient(circle at 75% 65%,rgba(37,99,235,.6),transparent 50%),
  linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px) 0 0/28px 28px,
  linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px) 0 0/28px 28px,#0f1b3d}
.case-body{padding:24px;display:flex;flex-direction:column;gap:10px}
.case-body h3{font-size:1.25rem}.case-body p{color:var(--body)}
.case-body .scope{font-size:.85rem;color:var(--mute)}.scope b{color:var(--blue);margin-right:8px;font-size:.72rem;letter-spacing:.1em}
.demo{align-self:flex-start;font-size:.7rem;background:#fef3c7;color:#92400e;border-radius:999px;padding:1px 10px;letter-spacing:.08em}
.tags{display:flex;flex-wrap:wrap;gap:8px;max-height:0;opacity:0;overflow:hidden;transition:max-height .35s,opacity .35s}
.case:hover .tags,.case:focus-within .tags{max-height:80px;opacity:1}
@media(hover:none){.tags{max-height:80px;opacity:1}}
.tags i{font-style:normal;font-size:.78rem;color:var(--blue);background:var(--bg2);border-radius:999px;padding:1px 10px}
.more{display:inline-block;margin-top:20px;color:var(--blue);font-weight:600}
.more span{font-size:.8em;opacity:.7}.more:hover{text-decoration:underline}

/* products */
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod{display:flex;flex-direction:column;gap:10px;padding:28px}
.prod h3{font-size:1.4rem}.prod p{color:var(--body)}
.tag{align-self:flex-start;font-size:.72rem;color:var(--blue);background:var(--bg2);border-radius:999px;padding:2px 12px;font-weight:600}
.go{margin-top:auto;padding-top:14px;font-size:.82rem;color:var(--mute)}.prod:hover .go{color:var(--blue)}

/* process */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.steps li{padding:28px 24px}
.steps h3{font-size:1.12rem;margin:10px 0;line-height:1.4}.steps h3 small{display:block;margin-top:4px}
.steps p{color:var(--body);font-size:.95rem}
.steps li .num{font-size:1.8rem}

/* marquee */
.marquee{overflow:hidden;padding:12px 0;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee-track{display:flex;gap:28px;width:max-content;animation:mq 40s linear infinite}
.marquee-track span{filter:grayscale(1);opacity:.7;background:var(--bg);border:1px dashed #cbd5e1;border-radius:12px;padding:16px 36px;white-space:nowrap;color:var(--mute);letter-spacing:.08em}
@keyframes mq{to{transform:translateX(-50%)}}
.note{color:var(--mute);font-size:.82rem;margin-top:16px}

/* cta + footer (dark for contrast) */
.cta{padding:130px 0;text-align:center;color:#fff;position:relative;overflow:hidden;
  background:radial-gradient(ellipse at 50% 120%,rgba(6,182,212,.45),transparent 60%),radial-gradient(ellipse at 20% 0,rgba(37,99,235,.5),transparent 55%),var(--navy)}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(ellipse at center,#000 20%,transparent 75%)}
.cta .wrap{position:relative}
.cta h2{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1.4;font-weight:800}
.cta .h1-en{margin:18px auto 38px;color:#94a3b8}
.cta .btn-primary{background:linear-gradient(90deg,var(--blue),var(--cyan));border:0}
.footer{background:var(--navy);color:#94a3b8;border-top:1px solid #1e293b;padding:56px 0 24px;font-size:.9rem}
.foot-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.foot-name{font-size:1.1rem;font-weight:700;color:#fff}
.footer nav{display:flex;flex-direction:column;gap:8px}.footer a:hover{color:var(--cyan)}
.muted{color:#64748b}.copy{margin-top:40px;color:#64748b;font-size:.78rem}

/* reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.js .reveal.in{opacity:1;transform:none}

@media(max-width:1020px){
  .nav nav a:not(.nav-cta){display:none}
  .hero-inner{grid-template-columns:1fr}.radar{width:min(70%,320px);justify-self:start;margin-top:12px}
  .grid4,.steps{grid-template-columns:repeat(2,1fr)}
  .products{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav{padding:10px 16px}.brand small{display:none}
  .section{padding:72px 0}.wrap{padding:0 20px}
  .grid4,.products,.steps{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}
  .radar{display:none}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .marquee-track,.radar .sweep,.radar .dot,.eyebrow i{animation:none}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important}
}
.foot-social{display:flex;gap:16px;margin-top:8px}.foot-social a[hidden]{display:none}