/* Oly -Day — design system */
:root {
  --brand: #0a7a9a;
  --brand-deep: #065a73;
  --brand-soft: #e8f5f8;
  --accent: #1aa06a;
  --accent-hover: #158a5a;
  --ink: #16323f;
  --ink-muted: #4a6670;
  --surface: #f3f8fa;
  --white: #ffffff;
  --line: rgba(10, 122, 154, 0.14);
  --shadow: 0 18px 50px rgba(6, 90, 115, 0.12);
  --radius: 14px;
  --nav-h: 74px;
  --font-display: "Outfit", "Noto Sans TC", sans-serif;
  --font-body: "Noto Sans TC", "Outfit", sans-serif;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(10, 122, 154, 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(26, 160, 106, 0.08), transparent 50%),
    linear-gradient(180deg, #eef7f9 0%, var(--surface) 28%, #f7fbfc 100%);
  line-height: 1.7;
  min-height: 100vh;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
}

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  display: block;
  padding: 0.45rem 0.7rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-muted);
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--brand-deep);
  background: var(--brand-soft);
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s var(--ease), background 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(26, 160, 106, 0.28);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--brand);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--brand-deep);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.75);
  color: var(--brand-deep);
  border: 1px solid var(--line);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
}

.hero-slider {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.9s var(--ease), transform 6s linear;
}

.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(6, 40, 52, 0.25) 0%, rgba(6, 40, 52, 0.55) 55%, rgba(6, 40, 52, 0.78) 100%);
}

.hero-content {
  position: relative;
  z-index: 3;
  padding: 4.5rem 0 3.5rem;
  max-width: 640px;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
  margin: 0 0 0.85rem;
}

.hero-lead {
  margin: 0 0 0.55rem;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  font-weight: 500;
  opacity: 0.95;
}

.hero-sub {
  margin: 0 0 1.6rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-dots {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  display: flex;
  gap: 0.45rem;
}

.hero-dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
}

.hero-dots button.is-active {
  background: var(--white);
  width: 22px;
  border-radius: 999px;
}

/* —— Sections —— */
.section {
  padding: 4.5rem 0;
}

.section-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 0.55rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 700;
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}

.section-desc {
  margin: 0 auto;
  max-width: 40rem;
  color: var(--ink-muted);
}

.band {
  background: linear-gradient(90deg, var(--brand) 0%, #1290b0 100%);
  color: var(--white);
  padding: 1.15rem 0;
  text-align: center;
}

.band h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* —— Product grid —— */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.product-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
  padding: 1.25rem 1rem 1.5rem;
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), background 0.25s;
}

.product-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.7);
}

.product-card img {
  width: min(100%, 220px);
  aspect-ratio: 1;
  object-fit: contain;
}

.product-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand-deep);
}

/* —— About / split —— */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.split-copy p {
  color: var(--ink-muted);
}

.feature-list {
  display: grid;
  gap: 1.15rem;
  margin-top: 1.5rem;
}

.feature-item h4 {
  margin: 0 0 0.35rem;
  color: var(--brand-deep);
  font-size: 1.05rem;
}

.feature-item p {
  margin: 0;
}

.media-stack {
  display: grid;
  gap: 0.85rem;
}

.media-stack img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* —— Cert —— */
.cert-block {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow);
}

.cert-block p {
  color: var(--ink-muted);
}

.cert-block p:last-child {
  margin-bottom: 0;
}

/* —— Product page hero —— */
.page-hero {
  padding: 3rem 0 2rem;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow);
}

.page-hero-media {
  position: relative;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(10, 122, 154, 0.08), transparent 65%);
  border-radius: var(--radius);
  min-height: 280px;
  padding: 1rem;
}

.page-hero-media img {
  width: 100%;
  max-width: 420px;
  margin-inline: auto;
  filter: drop-shadow(0 18px 32px rgba(6, 90, 115, 0.16));
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 0.4rem;
  color: var(--brand-deep);
  line-height: 1.15;
}

.page-hero .subtitle {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.page-hero .tagline {
  margin: 0 0 1.4rem;
  color: var(--ink-muted);
}

.wave-rule {
  width: 120px;
  height: 3px;
  border: 0;
  margin: 0 0 1.4rem;
  background: linear-gradient(90deg, var(--brand), transparent);
  border-radius: 999px;
}

.page-block {
  padding: 2.75rem 0;
}

.page-block + .page-block {
  border-top: 1px solid var(--line);
}

.page-narrow {
  max-width: 760px;
  margin-inline: auto;
}

.page-narrow.prose p:last-child {
  margin-bottom: 0;
}

.product-shot {
  display: block;
  width: min(100%, 520px);
  margin: 1.5rem auto 0;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1rem;
}

.product-shot.bare {
  padding: 0;
  background: transparent;
  border: 0;
}

.info-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.info-panel {
  padding: 1.4rem 1.5rem;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.info-panel h3 {
  margin: 0 0 0.75rem;
  color: var(--brand-deep);
  font-size: 1.1rem;
}

.info-panel p {
  margin: 0;
  color: var(--ink-muted);
}

.trouble-list,
.forbid-list {
  list-style: none;
  display: grid;
  gap: 0.65rem;
  max-width: 640px;
  margin: 0 auto 1.75rem;
}

.trouble-list li,
.forbid-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink-muted);
}

.trouble-list li::before,
.forbid-list li::before {
  content: "×";
  flex-shrink: 0;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fde8e8;
  color: #c0392b;
  font-weight: 700;
  line-height: 1;
  margin-top: 0.1rem;
}

.feature-icons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.85rem;
  margin: 0 0 2rem;
}

.feature-icons img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.35rem;
}

.cert-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.25rem;
  margin: 1.5rem 0 0;
}

.cert-row img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.5rem;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.benefit-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.specs-grid {
  display: grid;
  gap: 1rem;
}

.spec-card {
  padding: 1.25rem 1.35rem;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.spec-card h3 {
  margin: 0 0 0.45rem;
  color: var(--brand-deep);
  font-size: 1.05rem;
}

.spec-card p {
  margin: 0;
  color: var(--ink-muted);
}

.ppt-stack {
  display: grid;
  gap: 1.1rem;
  max-width: 900px;
  margin-inline: auto;
}

.ppt-stack img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  background: var(--white);
}

/* —— Content blocks —— */
.prose {
  max-width: 68ch;
}

.prose h2,
.prose h3,
.prose h4 {
  color: var(--brand-deep);
  line-height: 1.35;
}

.prose p,
.prose li {
  color: var(--ink-muted);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.content-grid .full {
  grid-column: 1 / -1;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.stat-card {
  text-align: center;
  padding: 1.25rem 1rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stat-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--brand-deep);
  margin-bottom: 0.25rem;
}

.stat-card span {
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.icon-list {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--ink-muted);
}

.icon-list img {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.advantage-grid {
  display: grid;
  gap: 1.25rem;
}

.advantage-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.35rem 1.4rem;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.advantage-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--brand);
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
}

.advantage-item h3 {
  margin: 0.15rem 0 0.45rem;
  font-size: 1.15rem;
  color: var(--brand-deep);
}

.advantage-item p {
  margin: 0;
  color: var(--ink-muted);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
}

.gallery img {
  width: 100%;
  border-radius: 12px;
  background: var(--white);
  border: 1px solid var(--line);
}

.gallery.tall img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery.contain img {
  aspect-ratio: 1;
  object-fit: contain;
  padding: 0.75rem;
}

.checklist {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.checklist li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--ink-muted);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

/* —— FAQ —— */
.faq-list {
  display: grid;
  gap: 0.65rem;
  max-width: 820px;
  margin-inline: auto;
}

.faq-item {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.15rem;
  font-weight: 600;
  color: var(--brand-deep);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--brand);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item .faq-body {
  padding: 0 1.15rem 1.1rem;
  color: var(--ink-muted);
}

.faq-item .faq-body p {
  margin: 0;
}

/* —— Contact —— */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-card {
  padding: 1.75rem;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.contact-card h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  color: var(--brand-deep);
}

.contact-lines {
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.contact-lines li {
  display: grid;
  gap: 0.15rem;
}

.contact-lines span {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
}

.contact-lines a,
.contact-lines strong {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
}

.contact-note {
  margin-top: 1.25rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* —— Footer —— */
.site-footer {
  margin-top: 3rem;
  padding: 2.5rem 0 2rem;
  background: linear-gradient(180deg, transparent, rgba(10, 122, 154, 0.08));
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: flex-start;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

.footer-nav a {
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.footer-nav a:hover {
  color: var(--brand-deep);
}

.footer-meta {
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.footer-meta a {
  color: var(--brand-deep);
  font-weight: 700;
}

.copyright {
  margin-top: 1.75rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.88rem;
}

/* —— WhatsApp FAB —— */
.wa-fab {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: #25d366;
  color: #fff;
  font-weight: 700;
  font-size: 0.88rem;
  box-shadow: 0 12px 28px rgba(37, 211, 102, 0.35);
  transition: transform 0.2s var(--ease);
}

.wa-fab:hover {
  transform: translateY(-2px);
}

.wa-fab svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.wa-fab .wa-label {
  display: none;
}

@media (min-width: 720px) {
  .wa-fab .wa-label {
    display: inline;
  }
}

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split,
  .page-hero-grid,
  .content-grid,
  .contact-grid,
  .info-panels,
  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .feature-icons {
    grid-template-columns: repeat(3, 1fr);
  }

  .stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.25rem 1.15rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav a {
    padding: 0.75rem 0.85rem;
  }

  body.nav-open {
    overflow: hidden;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (max-width: 560px) {
  .product-grid,
  .stat-row,
  .stat-row[style],
  .feature-icons {
    grid-template-columns: 1fr !important;
  }

  .page-hero-grid {
    padding: 1.25rem;
  }

  .hero {
    min-height: 72vh;
  }

  .wa-fab {
    padding: 0.85rem;
  }
}

/* —— Homepage (reference layout) —— */
.home-wrap {
  background: #fff;
}

.home-section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.home-section.is-soft {
  background: #f4f5f4;
}

.home-section.is-ink {
  background: #1f3a34;
  color: #f4f7f5;
}

.home-intro {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.home-intro h2,
.home-feature h2,
.home-zigzag h2,
.home-concept h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  color: #1f3a34;
  line-height: 1.25;
}

.home-section.is-ink h2 {
  color: #fff;
}

.home-intro p,
.home-feature p,
.home-zigzag p,
.home-concept p {
  color: #5b6a64;
  margin: 0 0 1rem;
  line-height: 1.85;
}

.home-intro p:last-child,
.home-feature p:last-child,
.home-zigzag p:last-child,
.home-concept p:last-child {
  margin-bottom: 0;
}

.home-intro-visual {
  border-radius: 4px;
  overflow: hidden;
  background: #1f3a34;
  aspect-ratio: 16 / 11;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.home-intro-visual img {
  width: min(100%, 420px);
  object-fit: contain;
  filter: drop-shadow(0 16px 28px rgba(0, 0, 0, 0.25));
}

.home-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.home-duo figure {
  margin: 0;
  overflow: hidden;
  border-radius: 4px;
}

.home-duo figure:first-child {
  margin-top: 2.5rem;
}

.home-duo img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  display: block;
}

.home-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.home-feature-copy h2 {
  margin-bottom: 1.25rem;
}

.home-feature-visual {
  border-radius: 4px;
  overflow: hidden;
}

.home-feature-visual img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.home-zigzag {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}

.home-zigzag.is-reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.home-zigzag.is-reverse .home-zigzag-media {
  order: 2;
}

.home-zigzag.is-reverse .home-zigzag-copy {
  order: 1;
}

.home-product-shot {
  border-radius: 4px;
  overflow: hidden;
  background: #f3f6f5;
}

.home-product-shot img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

.home-product-shot.is-contain img {
  object-fit: contain;
  padding: 1.5rem;
  background: #f3f6f5;
}

.home-zigzag-copy .link {
  display: inline-block;
  margin-top: 1rem;
  color: #1f3a34;
  font-weight: 700;
  border-bottom: 1px solid rgba(31, 58, 52, 0.35);
  padding-bottom: 0.15rem;
}

.home-zigzag-copy .link:hover {
  border-bottom-color: #1f3a34;
}

.home-catalog-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.home-catalog-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.home-catalog-card {
  text-align: center;
  color: #f4f7f5;
  transition: transform 0.25s var(--ease);
}

.home-catalog-card:hover {
  transform: translateY(-4px);
}

.home-catalog-card .thumb {
  background: #fff;
  border-radius: 4px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 1rem;
  margin-bottom: 0.9rem;
}

.home-catalog-card img {
  width: min(100%, 180px);
  object-fit: contain;
}

.home-catalog-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
}

.home-catalog-card span {
  font-size: 0.88rem;
  opacity: 0.8;
}

.home-concept {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.home-venn {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 1;
  margin-inline: auto;
}

.home-venn span {
  position: absolute;
  width: 58%;
  aspect-ratio: 1;
  border: 1.5px solid #1f3a34;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 700;
  color: #1f3a34;
  background: rgba(255, 255, 255, 0.55);
  padding: 1rem;
  line-height: 1.35;
}

.home-venn .a {
  top: 6%;
  left: 21%;
}

.home-venn .b {
  bottom: 8%;
  left: 4%;
}

.home-venn .c {
  bottom: 8%;
  right: 4%;
}

.home-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.home-gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 4px;
  display: block;
}

.home-faq {
  max-width: 860px;
  margin-inline: auto;
}

.home-faq details {
  border-bottom: 1px solid rgba(31, 58, 52, 0.14);
}

.home-faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0.15rem;
  font-weight: 600;
  color: #1f3a34;
}

.home-faq summary::-webkit-details-marker {
  display: none;
}

.home-faq summary::after {
  content: "▾";
  font-size: 0.9rem;
  opacity: 0.55;
}

.home-faq[open] summary::after,
.home-faq details[open] summary::after {
  content: "▴";
}

.home-faq .faq-body {
  padding: 0 0 1.25rem;
  color: #5b6a64;
  line-height: 1.8;
}

.home-faq .faq-body p {
  margin: 0;
}

@media (max-width: 960px) {
  .home-intro,
  .home-feature,
  .home-zigzag,
  .home-zigzag.is-reverse,
  .home-concept,
  .home-gallery,
  .home-duo,
  .home-catalog-grid {
    grid-template-columns: 1fr;
  }

  .home-zigzag.is-reverse .home-zigzag-media,
  .home-zigzag.is-reverse .home-zigzag-copy {
    order: initial;
  }

  .home-duo figure:first-child {
    margin-top: 0;
  }

  .home-catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .home-catalog-grid {
    grid-template-columns: 1fr;
  }
}