:root {
  --se-blue-900: #2E3192;
  --se-blue-600: #29ABE2;
  --se-ink: #3f3f48;
  --se-muted: #4f5d6d;
  --se-border: #e3e8ee;
  --se-card: #ffffff;
}

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--se-ink);
  background-color: #f7f9fb;
}

.section {
  padding: 70px 0;
}

.banner {
  background: linear-gradient(135deg, #1318ae 0%, #2bc7ff 100%);
  background-size: 200% 200%;
  animation: bannerGradient 12s ease infinite;
  padding-top: 120px;
  padding-bottom: 90px;
}

@keyframes bannerGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

#header.fixed {
  background-color: var(--se-blue-900);
  box-shadow: 0 8px 24px rgba(15, 23, 32, 0.15);
}

.header-content {
  max-width: 1320px;
  margin: 0 auto;
  padding: 18px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo img {
  width: 240px;
  height: auto;
  display: block;
}

.header-beta-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #1b2b3a;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.95);
  line-height: 1.2;
}

.navigation {
  display: flex;
  align-items: center;
}

.primary-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 28px;
}

.primary-nav a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 12px;
  font-weight: 500;
}

.primary-nav a:hover,
.primary-nav a.active {
  color: #ffffff;
}

.nav-toggle {
  display: none;
  position: fixed;
  top: 10px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid #29ABE2;
  background: #29ABE2;
  text-indent: -9999px;
  overflow: hidden;
  z-index: 1100;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  background: #ffffff;
  transform: translateX(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle span {
  top: 50%;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}
.nav-toggle.close-nav span {
  background: transparent;
}
.nav-toggle.close-nav span::before {
  transform: translateX(-50%) rotate(45deg);
  top: 0;
}
.nav-toggle.close-nav span::after {
  transform: translateX(-50%) rotate(-45deg);
  top: 0;
}

.banner-text {
  text-align: left;
}

.badge-row {
  margin-bottom: 16px;
}

.badge-row .badge {
  display: inline-block;
  margin: 0 8px 8px 0;
  padding: 6px 10px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-weight: 600;
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}

.type-text {
  white-space: pre-line;
  border-right: 2px solid rgba(255, 255, 255, 0.8);
  padding-right: 4px;
  animation: typeCursor 0.8s step-end infinite;
  opacity: 0;
  transition: color 0.2s ease;
}

.type-target.typing .type-text,
.type-target.done .type-text {
  opacity: 1;
}

.type-text.done {
  border-right: none;
  animation: none;
  color: #ffffff;
}

@keyframes typeCursor {
  0%, 100% { border-color: rgba(255, 255, 255, 0.1); }
  50% { border-color: rgba(255, 255, 255, 0.9); }
}

.banner-text p {
  font-size: 19px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.trust-note {
  margin-top: 12px;
  margin-bottom: 34px;
  font-size: 14px;
  color: #ffffff;
}
.banner-text .trust-note {
  font-size: 18px;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 22px rgba(15, 23, 32, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(15, 23, 32, 0.22);
}

.banner .btn {
  border: none;
  background: #ffffff;
  color: #1f3c57;
}

.section-title {
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}

.section-title span {
  color: #2f567a;
}

.section-title.section-subtitle {
  font-size: 22px;
  margin-top: 18px;
}

.overview .section-intro {
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.7;
}

.section-intro.section-intro-compact {
  margin-bottom: 14px;
}

.why-sec-img {
  margin: 16px auto 30px;
  max-width: 980px;
  width: 100%;
  height: auto;
}

.features1, .feature2, .screens {
  background: #e8ecf3;
}
.tutorial {
  background: #f6f6f7;
}
.tutorial .card-lite {
  background: #ffffff;
  border: none;
  border-radius: 16px;
  box-shadow: none;
}
.tutorial-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0 0 6px;
  overflow-x: auto;
}
.tutorial-tabs .nav-link {
  border: none;
  border-radius: 999px;
  background: #ffffff;
  color: #1d1d1f;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  padding: 8px 14px;
  box-shadow: none;
}
.tutorial-tabs .nav-link.active {
  background: #1d1d1f;
  color: #ffffff;
  border-color: transparent;
  box-shadow: none;
}
.tutorial-content {
  margin-bottom: 12px;
}
.tutorial-step {
  margin-top: 16px;
  margin-bottom: 16px;
}
.tutorial .card-lite h3 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: 21px;
  color: #1d1d1f;
  text-align: center;
}
.tutorial .card-lite ul {
  margin-bottom: 0;
}
.tutorial-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.tutorial-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border: none;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: none;
}
.tutorial-item p {
  margin: 0;
  width: 100%;
  line-height: 1.65;
  color: #3a3a3c;
  font-weight: 400;
  font-size: 14px;
  text-align: center;
}
.tutorial-carousel {
  position: relative;
  padding: 0 42px;
}
.tutorial-carousel .carousel-item {
  padding: 2px 0;
}
.tutorial-carousel-control {
  width: 34px;
  height: 34px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  background: rgba(29, 29, 31, 0.75);
  opacity: 1;
}
.tutorial-carousel-control .carousel-control-prev-icon,
.tutorial-carousel-control .carousel-control-next-icon {
  width: 14px;
  height: 14px;
}
.tutorial-carousel.single-slide .tutorial-carousel-control {
  display: none;
}
.tutorial-item-img {
  width: 100%;
  max-width: 180px;
  height: auto;
  display: block;
  margin: 0 auto;
  border: none;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: none;
}
.tutorial-tip {
  margin: 0;
  font-size: 14px;
  color: var(--se-muted);
}
.tutorial-prompt-label {
  margin: 12px 0 8px;
  font-weight: 700;
}
.tutorial-prompt {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f5f5f7;
  border: none;
  font-size: 14px;
  line-height: 1.7;
  color: #3a3a3c;
  text-align: center;
}
.tutorial-shot-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.tutorial-shot-img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--se-border);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 8px 18px rgba(15, 23, 32, 0.08);
}
.tutorial-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
}
.tutorial-nav-btn {
  border: none;
  border-radius: 999px;
  background: #ffffff;
  color: #1d1d1f;
  padding: 8px 18px;
  font-weight: 600;
  font-size: 13px;
  line-height: 1.2;
  box-shadow: none;
}
.tutorial-nav-btn:hover,
.tutorial-nav-btn:focus {
  background: #f2f2f7;
}

.features1-content {
  margin-top: 20%;
}

.features1-content h4 {
  text-transform: uppercase;
  margin-top: 10px;
  color: #1318ae;
}

.features1-content p {
  font-size: 13px;
  font-weight: 300;
  line-height: 21px;
  letter-spacing: 1px;
  margin-top: 24px;
}

.features1-content .icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-bottom: 8px;
  border-radius: 12px;
  color: #ffffff;
  background: linear-gradient(135deg, #1318ae 0%, #2bc7ff 100%);
}

.left {
  text-align: right;
  padding-right: 5%;
}

.middle {
  padding-left: 3.5%;
}

.right {
  padding-left: 5%;
}

.center-img {
  display: block;
  margin: 0 auto;
}

.card-lite {
  background: var(--se-card);
  border: 1px solid var(--se-border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 10px 24px rgba(15, 23, 32, 0.08);
  height: 100%;
}

.card-lite h4 {
  margin-top: 0;
}

.subscribe .banner-btn {
  margin-top: 18px;
  justify-content: center;
}

.banner-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.banner-btn img {
  width: 160px;
  max-width: 100%;
  height: auto;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 160px;
  aspect-ratio: 108.85157 / 40;
  padding: 0;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  color: #ffffff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: none;
}

.contact-btn:hover,
.contact-btn:focus {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.beta-note {
  display: inline-block;
  margin-top: 8px;
  margin-bottom: 0;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
}

.banner .banner-btn img {
  width: 140px;
}

.banner .contact-btn {
  width: 140px;
}

.banner .beta-note {
  padding: 2px 7px;
  font-size: 12px;
}
#merit {
  padding-bottom: 0;
}
#future {
  padding-bottom: 0;
}
.merit-cards {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.merit-card {
  background: #ffffff;
  border: 1px solid var(--se-border);
  border-radius: 16px;
  padding: 18px;
}
.merit-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.merit-card h4 {
  margin: 0;
  font-size: 16px;
  color: #1b2b3a;
}
.merit-card p {
  margin: 0;
  color: var(--se-muted);
  font-size: 14px;
  line-height: 1.6;
}
.merit-icon {
  display: inline-flex;
  align-items: center;
  color: #1318ae;
  font-weight: 700;
}
.merit-icon .icon {
  font-size: 22px;
  font-weight: 700;
  color: var(--se-ink);
}

/* cases accordion */
#cases .accordion-item {
  border: 1px solid rgba(41, 171, 226, 0.2);
  border-radius: 14px;
  overflow: hidden;
  background: #f7fbff;
  box-shadow: 0 8px 20px rgba(41, 171, 226, 0.12);
  margin-bottom: 12px;
}
#cases .accordion-button {
  background: #f7fbff;
  color: #1c2b3a;
  font-weight: 600;
  padding: 16px 18px;
}
#cases .accordion-button:not(.collapsed) {
  color: #0f4f7a;
  background: rgba(41, 171, 226, 0.12);
  box-shadow: none;
}
#cases .accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(41, 171, 226, 0.2);
  border-color: rgba(41, 171, 226, 0.6);
}
#cases .accordion-body {
  padding: 16px 18px 20px;
  color: #3f4b57;
  line-height: 1.7;
}
.offline-icon {
  position: relative;
  display: inline-block;
}
.offline-icon::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 2px;
  background: currentColor;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-35deg);
  border-radius: 2px;
}

/* problem section */
.problem {
  background: #f7f9fb;
}

.problem-card {
  background: #ffffff;
  border: 1px solid rgba(20,30,60,.08);
  border-radius: 12px;
  padding: 18px 14px;
  height: 100%;
  display: flex;
  gap: 12px;
  align-items: center;
}
.problem-card .problem-icon {
  width: 80px;
  height: auto;
  display: block;
  flex-shrink: 0;
}
.problem-body {
  flex: 1;
}
.focus_text {
  color: #29abe2;
}
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.problem-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.problem-card p {
  font-size: 13px;
  line-height: 1.7;
  color: #6b7280;
  margin: 0;
}

.problem-compare {
  background: #ffffff;
  border: 1px solid rgba(20,30,60,.08);
  border-radius: 12px;
  padding: 16px;
}

.compare-title {
  font-size: 13px;
  font-weight: 700;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: .02em;
}

.compare-flow {
  font-size: 14px;
  font-weight: 600;
  margin: 0;
}


@media screen and (max-width: 768px) {
  .merit-cards {
    grid-template-columns: 1fr;
  }
  .tutorial-tabs .nav-link {
    font-size: 13px;
    padding: 8px 12px;
  }
  .tutorial-carousel {
    padding: 0 36px;
  }
  .tutorial-carousel-control {
    width: 30px;
    height: 30px;
  }
  .tutorial .card-lite h3,
  .tutorial-item p,
  .tutorial-prompt {
    text-align: left;
  }
  .tutorial-item {
    align-items: flex-start;
    gap: 10px;
  }
  .tutorial-item-img {
    max-width: 160px;
  }
  .tutorial-shot-gallery {
    margin-top: 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.parallax-section {
  position: relative;
  background-image: url("../images/hero_meeting.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  color: #ffffff;
  padding: 140px 0;
}
.parallax-section .overlay {
  position: absolute;
  inset: 0;
  background: rgba(60, 57, 162, 0.9);
  pointer-events: none;
}
.parallax-section .container {
  position: relative;
  z-index: 1;
}
.parallax-section h2,
.parallax-section p {
  color: #ffffff;
}
#download .banner-btn .btn {
  background: #ffffff;
  color: #1f3c57;
  border: none;
}

@media screen and (max-width: 1024px) {
  .nav-toggle {
    display: block;
  }

  .navigation {
    position: fixed;
    inset: 0;
    background: rgba(12, 18, 28, 0.96);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .navigation.open {
    opacity: 1;
    visibility: visible;
  }

  .primary-nav {
    flex-direction: column;
    gap: 18px;
  }
}

@media screen and (max-width: 768px) {
  .banner-text {
    text-align: left;
  }
  .features1-content {
  margin-top: 10%;
  }

  .badge-row {
    text-align: center;
  }

  .center-img {
    width: 220px;
  }

  .section-intro {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .features1-content {
    text-align: center;
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .features1-content.left,
  .features1-content.right {
    text-align: center;
  }

  .features1-content .icon {
    margin: 0 auto 6px;
  }

  .left,
  .right {
    padding-left: 0;
    padding-right: 0;
  }

  .features1-content p {
    margin-bottom: 12px;
  }
}