:root {
  --bg: #070d1a;
  --bg-2: #0b1426;
  --panel: rgba(18, 32, 58, 0.6);
  --line: rgba(80, 200, 230, 0.16);
  --text: #e6edf7;
  --muted: #94a3bd;
  --cyan: #2fd6e0;
  --blue: #4b8df8;
  --orange: #f0a030;
  --grad: linear-gradient(90deg, #2fd6e0, #4b8df8);
  --radius: 14px;
  --font: "Inter", "Noto Sans TC", system-ui, sans-serif;
  --font-head: "Montserrat", "Noto Sans TC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
html[lang="zh-Hant"] body { line-height: 1.8; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.2; margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1em; color: var(--muted); }

#circuit-bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: .5; }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 13, 26, .78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 30px; height: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-head); font-weight: 800; letter-spacing: .02em; font-size: 1.02rem; }
.brand-name .llc { font-weight: 600; color: var(--muted); }
.brand-tag { font-family: var(--font-head); font-size: .62rem; letter-spacing: .32em; color: var(--orange); font-weight: 600; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: .93rem; color: var(--muted); transition: color .2s; }
.nav-links a:hover { color: var(--cyan); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font: 600 .82rem var(--font);
}
.lang-toggle:hover { border-color: var(--cyan); }
.lang-toggle .sep { margin: 0 5px; opacity: .4; }
html[lang="en"] [data-lang-label="en"], html[lang="zh-Hant"] [data-lang-label="zh"] { color: var(--cyan); }
.menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-btn span { display: block; width: 22px; height: 2px; margin: 5px 0; background: var(--text); transition: .25s; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 10px; font-weight: 600; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s, border-color .2s;
  font-family: var(--font);
}
.btn-primary { background: var(--grad); color: #04111c; box-shadow: 0 8px 30px rgba(47, 214, 224, .25); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(47, 214, 224, .35); }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--cyan); }

/* Hero */
.hero { padding: clamp(56px, 9vw, 110px) 0 clamp(56px, 8vw, 100px); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.eyebrow {
  color: var(--orange); font-family: var(--font-head); font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase; font-size: .8rem; margin-bottom: 14px;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 800; letter-spacing: -.01em; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.1rem; max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 30px; }
.hero-tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags li {
  font-size: .8rem; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); background: rgba(47, 214, 224, .04);
}

.hero-visual { position: relative; aspect-ratio: 1; max-width: 440px; justify-self: center; width: 100%; }
.chip {
  position: absolute; inset: 22%;
  background: linear-gradient(145deg, #12223f, #0a1428);
  border: 1px solid rgba(47, 214, 224, .35); border-radius: 20px;
  box-shadow: 0 0 60px rgba(47, 214, 224, .18), inset 0 0 30px rgba(75, 141, 248, .12);
}
.chip-core { position: absolute; inset: 14%; display: grid; place-items: center; }
.chip-core img { width: 62%; filter: drop-shadow(0 0 18px rgba(47, 214, 224, .45)); animation: float 5s ease-in-out infinite; }
.pins { position: absolute; display: flex; justify-content: space-evenly; }
.pins.top, .pins.bottom { left: 10%; right: 10%; height: 14%; }
.pins.top { top: -14%; } .pins.bottom { bottom: -14%; }
.pins.left, .pins.right { top: 10%; bottom: 10%; width: 14%; flex-direction: column; }
.pins.left { left: -14%; } .pins.right { right: -14%; }
.pins::before, .pins::after { content: ""; }
.pins { background:
  repeating-linear-gradient(90deg, transparent 0 10px, rgba(47,214,224,.55) 10px 13px, transparent 13px 26px); }
.pins.left, .pins.right { background:
  repeating-linear-gradient(0deg, transparent 0 10px, rgba(47,214,224,.55) 10px 13px, transparent 13px 26px); }
.orbit { position: absolute; border-radius: 50%; border: 1px dashed rgba(47, 214, 224, .2); }
.o1 { inset: 4%; animation: spin 40s linear infinite; }
.o2 { inset: -4%; border-color: rgba(240, 160, 48, .18); animation: spin 60s linear infinite reverse; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes float { 50% { transform: translateY(-8px); } }

/* Sections */
.section { padding: clamp(64px, 9vw, 110px) 0; position: relative; }
.section-alt { background: linear-gradient(180deg, rgba(11, 20, 38, .85), rgba(11, 20, 38, .6)); border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 44px; }

.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column; gap: 4px;
}
.stat-icon { font-size: 1.4rem; color: var(--cyan); }
.stat strong { font-family: var(--font-head); font-size: 1.05rem; }
.stat span:last-child { color: var(--muted); font-size: .88rem; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .25s, border-color .25s, box-shadow .25s; position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: var(--grad);
  transform: scaleX(0); transform-origin: left; transition: transform .35s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(47, 214, 224, .4); box-shadow: 0 16px 40px rgba(0, 0, 0, .35); }
.card:hover::before { transform: scaleX(1); }
.card p { font-size: .93rem; margin: 0; }
.card-icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 18px;
  background: rgba(47, 214, 224, .08); border: 1px solid rgba(47, 214, 224, .25);
}
.card-icon svg { width: 24px; height: 24px; fill: none; stroke: var(--cyan); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: s; }
.steps li { position: relative; padding: 24px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.steps li:not(:last-child)::after {
  content: ""; position: absolute; top: 40px; right: -17px; width: 18px; height: 2px; background: var(--grad);
}
.step-n { font-family: var(--font-head); font-weight: 800; font-size: 1.6rem; color: var(--orange); display: block; margin-bottom: 8px; }
.steps p { font-size: .9rem; margin: 0; }

.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why { padding: 26px 22px; border-left: 2px solid var(--cyan); background: linear-gradient(90deg, rgba(47, 214, 224, .07), transparent); border-radius: 0 var(--radius) var(--radius) 0; }
.why p { font-size: .92rem; margin: 0; }

.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: center; }
.ci { width: 44px; height: 44px; flex: none; display: grid; place-items: center; border-radius: 12px; border: 1px solid var(--line); color: var(--cyan); font-size: 1.15rem; }
.contact-list small { display: block; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; }
.contact-list .office { align-items: flex-start; }
.contact-list .office div { display: flex; flex-direction: column; }
.contact-list .office .ci { font: 700 .8rem var(--font-head); letter-spacing: .05em; }
.contact-list a:hover { color: var(--cyan); }
.contact-form { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: grid; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font-size: .88rem; color: var(--muted); }
.contact-form input, .contact-form textarea {
  width: 100%; background: rgba(7, 13, 26, .7); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; color: var(--text); font: inherit; font-size: .95rem; resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(47, 214, 224, .15); }
.form-note { font-size: .8rem; margin: 0; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0; background: rgba(5, 9, 18, .9); }
.footer-grid { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; gap: 12px; align-items: center; }
.footer-brand div { display: flex; flex-direction: column; line-height: 1.3; }
.footer-brand span { font-size: .82rem; color: var(--muted); }
.copy { margin: 0; font-size: .82rem; }


/* Hero stats */
.hero-stats { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 28px; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--font-head); font-size: 1.35rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats span { font-size: .82rem; color: var(--muted); }

/* Partners */
.partners { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.partner { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.partner-head { display: flex; gap: 14px; align-items: center; margin-bottom: 16px; }
.partner-head h3 { margin: 0; font-size: 1.2rem; }
.partner-head small { color: var(--muted); }
.partner-letter { width: 48px; height: 48px; flex: none; border-radius: 12px; display: grid; place-items: center; font: 800 1.4rem var(--font-head); color: #1a0f02; background: linear-gradient(135deg, #f7b545, #e08a1a); }
.partner-letter.r { color: #04111c; background: var(--grad); }
.section-head p strong { color: var(--text); }
.tick { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.tick li { position: relative; padding-left: 24px; font-size: .93rem; }
.tick li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 10px; height: 6px; border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg); }

/* Service groups */
.group-title { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; margin: 8px 0 20px; color: var(--text); }
.group-title .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.group-title .dot.warm { background: var(--orange); box-shadow: 0 0 12px var(--orange); }
.cards + .group-title { margin-top: 48px; }
.card.warm .card-icon { background: rgba(240, 160, 48, .08); border-color: rgba(240, 160, 48, .3); }
.card.warm .card-icon svg { stroke: var(--orange); }
.card.warm::before { background: linear-gradient(90deg, #f0a030, #f7c66b); }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.g-item { margin: 0; grid-column: span 2; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.g-item.wide { grid-column: span 3; }
.g-item img { width: 100%; height: 240px; object-fit: contain; background: #eef0f2; }
.g-item.wide img { object-fit: cover; height: 260px; }
.g-item figcaption { padding: 16px 18px; display: flex; flex-direction: column; gap: 2px; }
.g-item figcaption strong { font-family: var(--font-head); }
.g-item figcaption span { font-size: .87rem; color: var(--muted); }

/* Cases */
.cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.case { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.case p { margin: 0; font-size: .93rem; }
.case-tag { display: inline-block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); border: 1px solid rgba(47,214,224,.35); border-radius: 999px; padding: 2px 10px; margin-bottom: 12px; }
.case-tag.warm { color: var(--orange); border-color: rgba(240,160,48,.4); }
.case-img { display: grid; grid-template-columns: 180px 1fr; gap: 20px; align-items: start; }
.case-img img { width: 100%; height: 100%; min-height: 150px; object-fit: cover; border-radius: 10px; }
.clients { margin-top: 44px; text-align: center; }
.clients-label { font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; }
.clients ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 14px; }
.clients li { font: 700 1rem var(--font-head); color: #b9c6da; padding: 8px 16px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.02); }

/* Quality */
.steps.steps-8, #quality .steps { grid-template-columns: repeat(4, 1fr); }
#quality .steps li:nth-child(4n)::after { display: none; }
.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.badge { border: 1px solid rgba(240,160,48,.3); border-radius: var(--radius); padding: 18px; text-align: center; background: rgba(240,160,48,.04); }
.badge strong { display: block; font-family: var(--font-head); color: var(--orange); font-size: 1.05rem; }
.badge span { font-size: .85rem; color: var(--muted); }

@media (max-width: 980px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .g-item, .g-item.wide { grid-column: span 1; }
  .g-item.wide:last-child { grid-column: span 2; }
  .cases { grid-template-columns: 1fr; }
  #quality .steps, .badges { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) { .partners { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  .gallery { grid-template-columns: 1fr; }
  .g-item.wide:last-child { grid-column: span 1; }
  .case-img { grid-template-columns: 1fr; }
  .case-img img { height: 200px; }
  #quality .steps, .badges { grid-template-columns: 1fr; }
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 980px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li::after { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .menu-btn { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: rgba(7, 13, 26, .97); border-bottom: 1px solid var(--line);
    max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .nav-links.open { max-height: 320px; }
  .nav-links a { padding: 14px 16px; border-top: 1px solid var(--line); }
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 300px; order: -1; }
}
@media (max-width: 560px) {
  .cards, .steps, .why-grid, .stats { grid-template-columns: 1fr; }
  .brand-tag { display: none; }
  .brand-name { font-size: .92rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}