:root {
  --ink: #151719;
  --text: #30343a;
  --muted: #747a82;
  --line: #dedede;
  --paper: #f6f5f1;
  --white: #ffffff;
  --steel: #4d535a;
  --charcoal: #22262b;
  --red: #b11922;
  --red-dark: #811219;
  --silver: #ebe9e2;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(21, 23, 25, 0.14);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(18rem, 1.1fr) minmax(28rem, 2.2fr) auto;
  align-items: center;
  gap: 1.5rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem clamp(1rem, 3.6vw, 3rem);
}

.logo,
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-mark {
  display: grid;
  width: 3.8rem;
  height: 2.4rem;
  place-items: center;
  color: var(--red);
  border: 2px solid var(--charcoal);
  border-right: 0;
  font-size: 1.32rem;
  font-weight: 950;
  line-height: 1;
  letter-spacing: 0;
  text-transform: lowercase;
}

.logo-text strong,
.logo-text small,
.footer-logo strong,
.footer-logo small {
  display: block;
}

.logo-text strong,
.footer-logo strong {
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 900;
}

.logo-text small,
.footer-logo small {
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.3;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-item > a {
  display: block;
  padding: 0.85rem 0.72rem;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 850;
  white-space: nowrap;
}

.nav-item:hover > a {
  color: var(--red);
}

.submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  display: grid;
  min-width: 12.5rem;
  padding: 0.6rem;
  border-top: 0.2rem solid var(--red);
  background: var(--white);
  box-shadow: 0 1.1rem 2.8rem rgba(21, 23, 25, 0.16);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 0.5rem);
  transition: 160ms ease;
}

.nav-item:hover .submenu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.submenu a {
  padding: 0.55rem 0.7rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.submenu a:hover {
  color: var(--red);
  background: #f7f1f1;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.language-switch a {
  padding: 0.38rem 0.45rem;
  border: 1px solid transparent;
}

.language-switch a[aria-current="page"] {
  color: var(--red);
  border-color: rgba(177, 25, 34, 0.28);
}

.page-hero {
  position: relative;
  min-height: 21rem;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(100deg, rgba(21, 23, 25, 0.86), rgba(21, 23, 25, 0.46)),
    linear-gradient(135deg, var(--charcoal), var(--steel));
}

.page-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, transparent 0 55%, rgba(177, 25, 34, 0.82) 55% 55.45%, transparent 55.45%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 8px);
}

.hero-circuit {
  position: absolute;
  right: -8rem;
  bottom: -7rem;
  width: min(52rem, 88vw);
  height: 26rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background:
    radial-gradient(circle at 20% 34%, rgba(255, 255, 255, 0.72) 0 0.22rem, transparent 0.26rem),
    radial-gradient(circle at 54% 62%, rgba(255, 255, 255, 0.62) 0 0.22rem, transparent 0.26rem),
    radial-gradient(circle at 78% 28%, rgba(255, 255, 255, 0.66) 0 0.22rem, transparent 0.26rem),
    repeating-linear-gradient(135deg, transparent 0 1.7rem, rgba(255, 255, 255, 0.2) 1.7rem 1.85rem, transparent 1.85rem 3.4rem);
  clip-path: polygon(13% 0, 100% 0, 100% 70%, 74% 70%, 60% 100%, 0 100%, 0 22%);
  opacity: 0.78;
}

.page-title {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 8rem) clamp(1rem, 3.6vw, 3rem) clamp(3.2rem, 6vw, 5rem);
}

.page-title p {
  margin: 0 0 0.7rem;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.95rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.page-title h1 {
  margin: 0;
  font-size: clamp(3rem, 7vw, 6.4rem);
  font-weight: 950;
  line-height: 1;
  letter-spacing: 0;
}

.breadcrumb {
  display: flex;
  gap: 0.7rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.05rem clamp(1rem, 3.6vw, 3rem);
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb a {
  color: var(--red);
  font-weight: 800;
}

.company-band,
.case-summary,
.news-band {
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(3rem, 6vw, 5.5rem) clamp(1rem, 3.6vw, 3rem);
}

.company-band {
  display: grid;
  grid-template-columns: minmax(18rem, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.42);
}

.section-kicker {
  margin: 0 0 0.5rem;
  color: var(--red);
  font-size: 0.82rem;
  font-weight: 950;
  letter-spacing: 0.1em;
}

h2,
h3,
p {
  margin-top: 0;
}

.company-band h2,
.case-summary h2,
.news-band h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.08;
}

.company-band > p,
.news-band > p {
  margin-bottom: 0;
  color: var(--text);
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
}

.service-page {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 3rem);
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(3rem, 6vw, 5rem) clamp(1rem, 3.6vw, 3rem);
}

.service-index {
  position: sticky;
  top: 6rem;
  align-self: start;
  display: grid;
  border-top: 0.28rem solid var(--red);
  background: var(--white);
  box-shadow: 0 1rem 2.2rem rgba(21, 23, 25, 0.08);
}

.service-index p {
  margin: 0;
  padding: 1rem 1.1rem;
  color: var(--white);
  background: var(--charcoal);
  font-weight: 950;
}

.service-index a {
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-weight: 800;
}

.service-index a:hover {
  color: var(--red);
  background: #fbf5f5;
}

.service-stack {
  display: grid;
  gap: clamp(2rem, 4vw, 4.5rem);
}

.service-block {
  scroll-margin-top: 7.5rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.56);
}

.service-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  padding-top: clamp(1.6rem, 3vw, 2.5rem);
}

.service-head h2 {
  margin-bottom: 0.2rem;
  color: var(--ink);
  font-size: clamp(2rem, 4.2vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.service-head p {
  margin: 0;
  color: var(--red);
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  font-weight: 850;
}

.service-head span {
  color: rgba(177, 25, 34, 0.16);
  font-size: clamp(4.4rem, 9vw, 8rem);
  font-weight: 950;
  line-height: 0.8;
}

.service-copy {
  max-width: 56rem;
  margin: 1.4rem 0 1.8rem;
  color: var(--text);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
}

.service-detail {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 1.1fr);
  gap: clamp(1.2rem, 3vw, 2.5rem);
  align-items: stretch;
}

.service-detail h3,
.related-cases h3 {
  margin-bottom: 0.8rem;
  color: var(--ink);
  font-size: 1.08rem;
}

.service-detail ul {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-detail li {
  position: relative;
  padding-left: 1.4rem;
  font-weight: 760;
}

.service-detail li::before {
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 0.48rem;
  height: 0.48rem;
  content: "";
  background: var(--red);
}

.service-visual {
  position: relative;
  min-height: 17rem;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(21, 23, 25, 0.74), rgba(77, 83, 90, 0.34)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0 1px, transparent 1px 1.2rem),
    var(--silver);
  clip-path: polygon(0 0, 100% 0, 100% 82%, 73% 82%, 64% 100%, 0 100%);
}

.service-visual::before {
  position: absolute;
  inset: 2rem;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.5);
  clip-path: polygon(12% 0, 100% 0, 100% 70%, 80% 70%, 69% 100%, 0 100%, 0 22%);
}

.service-visual span {
  position: absolute;
  width: 0.75rem;
  height: 0.75rem;
  border: 2px solid var(--white);
  border-radius: 999px;
}

.service-visual span:nth-child(1) {
  top: 26%;
  left: 24%;
}

.service-visual span:nth-child(2) {
  top: 52%;
  left: 58%;
}

.service-visual span:nth-child(3) {
  top: 35%;
  left: 78%;
}

.service-visual.dense {
  background:
    linear-gradient(135deg, rgba(129, 18, 25, 0.78), rgba(77, 83, 90, 0.44)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.16) 0 2px, transparent 2px 1.4rem),
    var(--silver);
}

.service-visual.support {
  background:
    linear-gradient(135deg, rgba(34, 38, 43, 0.86), rgba(177, 25, 34, 0.36)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 1.1rem),
    var(--steel);
}

.service-visual.project {
  background:
    linear-gradient(135deg, rgba(77, 83, 90, 0.78), rgba(21, 23, 25, 0.42)),
    radial-gradient(circle at 68% 40%, rgba(177, 25, 34, 0.76) 0 0.7rem, transparent 0.75rem),
    var(--silver);
}

.related-cases {
  margin-top: 1.8rem;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.case-grid a {
  min-height: 8.6rem;
  padding: 1.1rem;
  background: var(--white);
}

.case-grid a:hover {
  background: #fbf3f3;
}

.case-grid small,
.summary-grid small {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 900;
}

.case-grid strong {
  display: block;
  color: var(--ink);
  font-size: 1.03rem;
  line-height: 1.45;
}

.case-summary {
  border-top: 1px solid var(--line);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.summary-grid article {
  padding: 1.3rem;
  border-top: 0.3rem solid var(--red);
  background: var(--white);
}

.summary-grid h3 {
  margin-bottom: 0.5rem;
  color: var(--ink);
  font-size: 1.24rem;
}

.summary-grid p {
  margin: 0;
  color: var(--muted);
}

.news-band {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.42);
}

.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: var(--charcoal);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(18rem, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 4.5rem) clamp(1rem, 3.6vw, 3rem);
}

.footer-logo strong,
.footer-logo small {
  color: var(--white);
}

.footer-top p {
  margin: 1rem 0 0;
}

address {
  display: grid;
  gap: 0.45rem;
  font-style: normal;
}

address strong {
  color: var(--white);
  font-size: 1.25rem;
}

address a {
  color: var(--white);
  font-weight: 800;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem clamp(1rem, 3.6vw, 3rem);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.9rem;
}

.footer-bottom a {
  color: var(--white);
  font-weight: 850;
}

@media (max-width: 1120px) {
  .header-inner {
    grid-template-columns: 1fr;
  }

  .main-nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .language-switch {
    justify-content: flex-start;
  }

  .service-page {
    grid-template-columns: 1fr;
  }

  .service-index {
    position: static;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .service-index p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .company-band,
  .service-detail,
  .footer-top {
    grid-template-columns: 1fr;
  }

  .case-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .service-index {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .header-inner {
    padding: 0.9rem 1rem;
  }

  .logo {
    align-items: flex-start;
  }

  .logo-mark {
    width: 3.1rem;
    height: 2rem;
    font-size: 1.08rem;
  }

  .main-nav {
    gap: 0;
  }

  .nav-item > a {
    padding: 0.5rem 0.46rem;
    font-size: 0.86rem;
  }

  .submenu {
    display: none;
  }

  .page-hero {
    min-height: 16rem;
  }

  .service-index {
    grid-template-columns: 1fr;
  }

  .service-head {
    grid-template-columns: 1fr;
  }

  .service-head span {
    font-size: 3.5rem;
  }

  .service-visual {
    min-height: 12rem;
  }

  .footer-bottom {
    flex-direction: column;
  }
}