:root {
  --bg: #ffffff;
  --ink: #172421;
  --muted: #66736f;
  --line: #dbe4e0;
  --panel: #f4f8f6;
  --teal: #0c6258;
  --teal-dark: #084b43;
  --amber: #c88a2a;
  --shadow: 0 24px 60px rgba(12, 98, 88, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

img {
  display: block;
  max-width: 100%;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 clamp(20px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(219, 228, 224, 0.78);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 900;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  background: var(--teal);
  color: #fff;
  border-radius: 8px;
  font-size: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: #33413d;
  font-size: 15px;
  font-weight: 700;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--teal);
}

.menu-toggle {
  display: none;
}

.section {
  padding-inline: clamp(20px, 5vw, 80px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding-block: clamp(48px, 7vw, 96px) clamp(52px, 8vw, 108px);
}

.hero-copy {
  max-width: 690px;
}

.hero h1 {
  margin: 0;
  max-width: 12em;
  font-size: clamp(42px, 6vw, 86px);
  line-height: 1.05;
  font-weight: 900;
}

.hero p {
  margin: 28px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(17px, 1.55vw, 21px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid var(--teal);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
}

.button.primary {
  background: var(--teal);
  color: #fff;
}

.button.secondary {
  background: #fff;
  color: var(--teal);
}

.hero-media {
  position: relative;
  margin: 0;
  aspect-ratio: 1.06;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-media::after {
  position: absolute;
  right: 22px;
  bottom: 22px;
  width: 104px;
  height: 8px;
  background: var(--amber);
  border-radius: 99px;
  content: "";
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.services {
  padding-block: 82px;
  background: var(--panel);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  max-width: 1180px;
  margin: 0 auto 34px;
}

.section-heading h2,
.about h2,
.contact h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.14;
}

.section-heading p,
.about p,
.contact p {
  margin: 0;
  max-width: 520px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.service-card {
  min-height: 280px;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-number {
  color: var(--amber);
  font-size: 14px;
  font-weight: 900;
}

.service-card h3 {
  margin: 54px 0 16px;
  font-size: 25px;
}

.service-card p,
.work-list h3 {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.process {
  padding-block: 86px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.process-list li {
  position: relative;
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.process-list span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-weight: 900;
}

.process-list h3 {
  margin: 54px 0 14px;
  font-size: 22px;
  line-height: 1.35;
}

.process-list p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.about {
  padding-block: 86px;
}

.about-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 1.05fr);
  gap: 50px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 58px);
  background: var(--teal-dark);
  color: #fff;
  border-radius: 8px;
}

.about p {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.78);
}

.proof-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
}

.proof-list div {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.proof-list dt {
  color: #fff;
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 900;
  line-height: 1;
}

.proof-list dd {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  line-height: 1.6;
}

.work {
  padding-block: 18px 92px;
}

.work-list {
  max-width: 1180px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.work-list article {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.work-list span {
  color: var(--teal);
  font-size: 14px;
  font-weight: 900;
}

.work-list h3 {
  color: var(--ink);
  font-size: clamp(21px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.35;
}

.faq {
  padding-block: 18px 92px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-list details {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

.faq-list p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
  gap: 36px;
  align-items: center;
  padding-block: 78px;
  background: var(--panel);
}

.contact p {
  margin-top: 18px;
}

.contact-card {
  display: grid;
  gap: 12px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(23, 36, 33, 0.06);
  color: var(--teal-dark);
  font-size: 18px;
  font-weight: 800;
}

.contact-card span {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 80px);
  color: var(--muted);
  font-size: 14px;
}

.site-footer a {
  color: var(--teal);
  font-weight: 800;
}

@media (max-width: 860px) {
  .site-header {
    min-height: 66px;
  }

  .menu-toggle {
    display: inline-grid;
    gap: 6px;
    width: 42px;
    height: 42px;
    place-content: center;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
  }

  .menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 18px 44px rgba(23, 36, 33, 0.12);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 14px 12px;
  }

  .hero,
  .about-panel,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero h1 {
    max-width: 10.5em;
  }

  .hero-media {
    aspect-ratio: 1.35;
  }

  .section-heading {
    display: grid;
    align-items: start;
  }

  .service-grid,
  .process-list,
  .proof-list {
    grid-template-columns: 1fr;
  }

  .service-card,
  .process-list li {
    min-height: 220px;
  }

  .service-card h3,
  .process-list h3 {
    margin-top: 34px;
  }

  .work-list article {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .brand {
    font-size: 16px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .button {
    width: 100%;
  }

  .site-footer {
    display: grid;
  }
}