/*==============================
  Root Variables
==============================*/
:root {
  --font-sm: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.25rem;
  --font-xl: 1.5rem;
  --font-2xl: 2rem;
  --accent: #4dd0e1;
  --bg-dark: #2f333a;
  --bg-subtle: #2a2f36;
  --text-light: #fcfcfc;
  --text-subtle: #888;
  --section-margin: 1.5rem;
  --section-padding: 1.5rem;
}

/*==============================
  Layout Utilities
==============================*/
.mx-16 {
  margin-left: 128px;
  margin-right: 128px;
}
@media (max-width: 639px) {
  .mx-16 {
    margin-left: 16px;
    margin-right: 16px;
  }
}

.hide-on-mobile {
  display: none;
}
@media (min-width: 639px) {
  .hide-on-mobile {
    display: inline;
  }
}

/*==============================
  Section Titles
==============================*/
.section-title {
  margin-bottom: 2rem;
}
.h2-heading {
  all: unset;
  display: block;
  font-size: var(--font-2xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.section-title .read {
  font-size: var(--font-md);
  font-weight: 400;
  margin: 0;
}

/*==============================
  Masked Images
==============================*/
.masked-image-horizontal {
  -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
  mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

.masked-image {
  -webkit-mask-image:
    linear-gradient(to right, transparent, black 5%, black 95%, transparent),
    linear-gradient(to bottom, transparent, black 5%, black 95%, transparent);
  mask-image:
    linear-gradient(to right, transparent, black 5%, black 95%, transparent),
    linear-gradient(to bottom, transparent, black 5%, black 95%, transparent);
  -webkit-mask-composite: intersect;
  mask-composite: intersect;
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

/*==============================
  Relative container
==============================*/
.relative-container {
  position: relative;
  width: 100%;
}

.relative-image {
  position: relative;
  z-index: 0;
}

.overlay-center {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;

  display: flex;
  justify-content: center;
  align-items: center;
}

.overlay-bottom-left {
  position: absolute;
  bottom: 8rem;
  left: 8rem;
  z-index: 1;
}

/*==============================
  Accordion
==============================*/
.accordion-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem var(--section-margin);
}
@media (max-width: 639px) {
  .accordion-list {
    margin: 0.5rem 0.5rem;
  }
}

.accordion-item {
  border-bottom: 1px solid #ddd;
  padding: var(--section-padding) 0;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.accordion-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-grow: 1;
}
.accordion-icon-start {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  display: inline-block;
}
.accordion-title-group {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.accordion-title {
  font-size: var(--font-lg);
  font-weight: bold;
  text-align: left;
}
.accordion-subtitle {
  font-size: var(--font-sm);
  color: var(--text-subtle);
  text-align: left;
}
.accordion-toggle-icon {
  width: 1.5rem;
  height: 1.5rem;
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-right: 1rem;
}
@media (max-width: 639px) {
  .accordion-content {
    padding: 0.75rem 1rem;
    margin-right: 0.5rem;
  }
  .accordion-toggle-icon {
    margin-right: 0.25rem;
  }
  .accordion-left {
    gap: 0.5rem;
  }
  .accordion-title {
    font-size: var(--font-md);
  }
  .accordion-subtitle {
    font-size: 0.75rem;
  }
}
.accordion-content {
  display: none;
  padding: 1rem 1.5rem;
  background-color: var(--bg-dark);
  margin-top: 1rem;
  margin-right: 1rem;
  border-radius: 4px;
}
.accordion-item.open .accordion-content {
  display: block;
}
.accordion-item.open .accordion-toggle-icon {
  transform: rotate(45deg);
}

/*==============================
  Feature Section
==============================*/
.feature-headline {
  text-align: center;
  color: var(--text-light);
  font-size: var(--font-md);
  padding: 0.5rem;
  margin-top: 1.5rem;
}
@media (min-width: 639px) {
  .feature-headline {
    font-size: var(--font-lg);
  }
}
@media (min-width: 1024px) {
  .feature-headline {
    font-size: var(--font-xl);
  }
}

h3.feature-subheading {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-light);
  background-color: var(--bg-subtle);
  padding: 0.5rem 1rem;
  display: inline-block;
  margin-top: 1rem;
  margin-bottom: 0.125rem;
  text-decoration: none;
  border-bottom: none;
}

.feature-section {
  padding: 2rem 1rem;
  background-color: #f5f7f6;
}
.feature-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .feature-container {
    flex-direction: row;
  }
}

.feature-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.feature-item {
  display: flex;
  background-color: var(--bg-dark);
  padding: 1rem;
  align-items: center;
  gap: 1rem;
}
.feature-num {
  font-size: var(--font-lg);
  font-weight: bold;
  color: var(--accent);
  flex-shrink: 0;
}
@media (min-width: 640px) {
  .feature-num {
    font-size: var(--font-xl);
  }
}
@media (min-width: 1024px) {
  .feature-num {
    font-size: 2.5rem;
  }
}

.feature-body {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--accent);
  flex: 1;
  gap: 1rem;
}
.feature-point {
  font-size: var(--font-md);
  font-weight: 600;
  flex: 1;
}
@media (min-width: 640px) {
  .feature-point {
    font-size: var(--font-lg);
  }
}
@media (min-width: 1024px) {
  .feature-point {
    font-size: var(--font-lg);
  }
}

/*==============================
  Download Section
==============================*/
.content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.icon img {
  display: block;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.download-group {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 0 2rem;
  max-width: 960px;
  margin: 1.5rem auto;
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 2rem;
}

.download-label {
  font-size: 1.125rem;
  font-weight: 600;
  width: 320px;
  text-align: left;
  flex-shrink: 0;
}

.download-card {
  flex-grow: 1;
  display: flex;
  justify-content: flex-start;
}

.link-block {
  all: initial;
  display: flex;
  width: 100%;
  max-width: 320px;
  border: none;
  outline: none;
  cursor: pointer;
}

.card-block {
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  padding: 1rem;
  border-radius: 0.5rem;
  text-decoration: none;
}

.card-block .content .text-xl,
.card-block .content .text-sm {
  color: white;
}

.trial-card {
  background-color: #d98506;
}

.purchase-card {
  background-color: #037ca1;
}

.manual-card {
  background-color: #037ca1;
}

/* Hover 共通定義 */
.card-block:hover {
  background-color: #f9f9f9;
  color: #1a1a2e;
  text-shadow: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.card-block:hover .content .text-xl,
.card-block:hover .content .text-sm {
  color: #1a1a2e;
  text-shadow: none;
}

@media (max-width: 768px) {
  .download-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .download-label {
    width: auto;
  }

  .download-card {
    margin-top: -1.5rem;
    width: 100%;
  }
}

/*==============================
  Flow Section
==============================*/
.flow-headline {
  text-align: center;
  color: var(--text-light);
  font-size: var(--font-md);
  padding: 0.5rem;
  margin-top: 1.5rem;
}
@media (min-width: 639px) {
  .flow-headline {
    font-size: var(--font-lg);
  }
}
@media (min-width: 1024px) {
  .flow-headline {
    font-size: var(--font-xl);
  }
}

/*==============================
  Tile
==============================*/
.tile-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1rem;
}

.tile {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: 1rem;
  border-radius: 0.5rem;
  font-size: var(--font-md);
  font-weight: 500;
  text-align: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}