:root {
  --ink: #17231f;
  --deep: #0b1713;
  --muted: #68746f;
  --line: #dde2dc;
  --paper: #fffdf8;
  --soft: #f2f0e8;
  --green: #285f48;
  --moss: #8fa667;
  --gold: #b9955f;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(19, 34, 29, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft JhengHei", "Noto Sans TC", Arial, sans-serif;
  line-height: 1.65;
}
img { display: block; width: 100%; height: 100%; object-fit: cover; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 5vw;
  color: var(--white);
  background: linear-gradient(180deg, rgba(11, 23, 19, 0.9), rgba(11, 23, 19, 0));
}
.site-header.solid {
  position: sticky;
  color: var(--ink);
  background: rgba(255, 253, 248, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand {
  display: inline-flex;
  align-items: center;
  width: 184px;
  height: 48px;
  background: url("assets/arua-green-logo-light.svg") left center / contain no-repeat;
  font-weight: 800;
}
.site-header.solid .brand {
  background-image: url("assets/arua-green-logo.svg");
}
.brand-mark {
  display: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--moss), var(--green));
  box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.28);
}
.brand span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
}
.nav-links a { opacity: 0.82; }
.nav-links a.active,
.nav-links a:hover { opacity: 1; color: var(--moss); }

.hero {
  min-height: 94vh;
  display: flex;
  align-items: center;
  padding: 130px 5vw 92px;
  color: var(--white);
}
.hero-home {
  background:
    linear-gradient(90deg, rgba(8, 18, 15, 0.88), rgba(8, 18, 15, 0.62) 42%, rgba(8, 18, 15, 0.08) 76%),
    url("assets/hero-artificial-plants.png") center / cover no-repeat;
}
.hero-copy { max-width: 760px; }
.eyebrow {
  margin: 0 0 13px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 22px;
  font-size: 72px;
  line-height: 1.05;
  letter-spacing: 0;
}
h2 {
  margin-bottom: 16px;
  font-size: 38px;
  line-height: 1.18;
  letter-spacing: 0;
}
h3 { font-size: 22px; }
.lead {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
}
.page .lead { color: var(--muted); }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  padding: 13px 22px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.button.primary,
button { color: var(--white); background: var(--green); }
.button.glass {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.14);
}
button:disabled { cursor: default; opacity: 0.76; }

.signature {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}
.signature div {
  min-height: 210px;
  padding: 38px 5vw;
  border-right: 1px solid var(--line);
}
.signature div:last-child { border-right: 0; }
.signature span,
.catalog article > span,
.process span,
.case-grid span {
  color: var(--gold);
  font-weight: 800;
}
.signature strong {
  display: block;
  margin: 14px 0 8px;
  font-size: 22px;
}
.signature p,
.section-copy p,
.collection-grid strong,
.catalog p,
.catalog li,
.solution-list p,
.process p,
.case-grid p,
.featured-case p,
.featured-case dd,
.contact-info span {
  color: var(--muted);
}

.section,
.page-hero,
.catalog,
.solution-list,
.process,
.featured-case,
.case-grid,
.contact-page {
  padding: 86px 5vw;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: 60px;
  align-items: center;
}
.section-copy { max-width: 680px; }
.text-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--green);
  font-weight: 800;
  border-bottom: 2px solid var(--gold);
}
.image-panel {
  height: 520px;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.muted { background: #edf1e8; }
.section-heading { max-width: 680px; margin-bottom: 30px; }
.collection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.collection-grid a {
  min-height: 230px;
  padding: 28px;
  background: var(--white);
}
.collection-grid img {
  height: 180px;
  margin: -28px -28px 24px;
  width: calc(100% + 56px);
  border-bottom: 1px solid var(--line);
}
.collection-grid span {
  display: block;
  margin-bottom: 18px;
  color: var(--gold);
  font-weight: 800;
}
.collection-grid strong {
  display: block;
  font-size: 20px;
  line-height: 1.45;
}
.home-scenes {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  grid-template-rows: repeat(2, 260px);
  gap: 18px;
}
.scene-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  color: var(--white);
  background: var(--deep);
  box-shadow: var(--shadow);
}
.scene-card.large {
  grid-row: span 2;
}
.scene-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 23, 19, 0.02), rgba(11, 23, 19, 0.78));
}
.scene-card img {
  height: 100%;
  transition: transform 0.5s ease;
}
.scene-card:hover img {
  transform: scale(1.04);
}
.scene-card div {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 24px;
  z-index: 1;
}
.scene-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}
.scene-card strong {
  display: block;
  font-size: 26px;
  line-height: 1.2;
}
.scene-card p {
  max-width: 480px;
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
}
.home-process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.home-process div {
  min-height: 220px;
  padding: 34px 5vw 32px;
  background: var(--white);
}
.home-process span {
  color: var(--gold);
  font-weight: 800;
}
.home-process strong {
  display: block;
  margin: 22px 0 8px;
  font-size: 22px;
}
.home-process p {
  margin: 0;
  color: var(--muted);
}
.cta-band {
  padding: 82px 5vw;
  color: var(--white);
  background: var(--deep);
}
.cta-band h2 { max-width: 820px; }
.visual-strip {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--line);
}
.visual-strip img {
  height: 360px;
}

.page { min-height: 70vh; }
.page-hero {
  background:
    linear-gradient(90deg, rgba(255, 253, 248, 0.96), rgba(255, 253, 248, 0.86)),
    url("assets/luxury-lobby-plants.png") center / cover no-repeat;
}
.page-hero h1 { color: var(--ink); }
.catalog {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.catalog article,
.solution-list article,
.case-grid article,
.stats div {
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}
.catalog article img,
.solution-list article img,
.case-grid article img {
  height: 250px;
  margin: -30px -30px 24px;
  width: calc(100% + 60px);
  border-bottom: 1px solid var(--line);
}
.catalog ul {
  margin: 18px 0 0;
  padding-left: 20px;
}
.solution-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.process div {
  min-height: 200px;
  padding: 28px;
  background: var(--soft);
}
.process strong {
  display: block;
  margin: 18px 0 8px;
  font-size: 20px;
}
.featured-case {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 44px;
  align-items: center;
}
.featured-case img {
  height: 520px;
  border-radius: 8px;
}
.featured-case dl {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
}
.featured-case dt { font-weight: 800; }
.featured-case dd { margin: 0; }
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  background: var(--soft);
}
.case-grid article img {
  height: 220px;
}
.stats {
  display: grid;
  gap: 14px;
}
.stats strong {
  display: block;
  font-size: 44px;
}
.contact-page {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(340px, 520px);
  gap: 60px;
  align-items: start;
}
.contact-page h1 { color: var(--ink); }
.contact-info {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}
.contact-info p {
  display: grid;
  gap: 4px;
  margin: 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.quote-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border-radius: 8px;
  background: var(--deep);
  box-shadow: var(--shadow);
}
label {
  display: grid;
  gap: 7px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
}
input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  font: inherit;
}
textarea { resize: vertical; }
input::placeholder,
textarea::placeholder { color: rgba(255, 255, 255, 0.48); }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 25px 5vw;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
}
.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 999px;
  color: var(--white);
  background: #1f8f5f;
  box-shadow: 0 18px 44px rgba(19, 34, 29, 0.24);
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    min-height: auto;
    padding-top: 18px;
    padding-bottom: 18px;
  }
  .site-header.solid { position: static; }
  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px 16px;
    max-width: 420px;
    font-size: 13px;
  }
  h1 { font-size: 46px; }
  h2 { font-size: 30px; }
  .lead { font-size: 17px; }
  .hero {
    min-height: 86vh;
    padding-top: 140px;
    background:
      linear-gradient(180deg, rgba(8, 18, 15, 0.82), rgba(8, 18, 15, 0.54)),
      url("assets/hero-artificial-plants.png") center / cover no-repeat;
  }
  .signature,
  .split,
  .collection-grid,
  .home-scenes,
  .home-process,
  .catalog,
  .solution-list,
  .process,
  .featured-case,
  .case-grid,
  .visual-strip,
  .contact-page {
    grid-template-columns: 1fr;
  }
  .signature div { border-right: 0; border-bottom: 1px solid var(--line); }
  .image-panel,
  .featured-case img,
  .visual-strip img { height: 360px; }
  .collection-grid a,
  .home-process div,
  .process div { min-height: auto; }
  .scene-card.large { grid-row: auto; }
  .home-scenes {
    grid-template-rows: none;
    grid-auto-rows: 280px;
  }
}

@media (max-width: 620px) {
  .brand {
    width: 138px;
    height: 40px;
  }
  .site-header { padding-left: 22px; padding-right: 22px; }
  .nav-links { max-width: 300px; }
  .hero,
  .section,
  .page-hero,
  .catalog,
  .solution-list,
  .process,
  .featured-case,
    .case-grid,
    .contact-page,
    .home-process,
    .cta-band {
    padding-left: 24px;
    padding-right: 24px;
  }
  h1 { font-size: 40px; }
  .hero-actions { display: grid; }
  .signature div { padding-left: 24px; padding-right: 24px; }
  .quote-form { padding: 22px; }
  .site-footer { display: grid; padding-left: 24px; padding-right: 24px; }
}