/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1d2026;
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* ===== GLOBAL LAYOUT ===== */
.container {
  width: min(1120px, 100% - 40px);
  margin-inline: auto;
}

.section {
  padding: 96px 0;
}

.section-inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.section-label {
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 1.0rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #000000;
  text-shadow: rgb(0, 0, 0) 1px 0 10px;
}

.section-label.light {
  color: #e3e7f2;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.4;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.section-lead {
  margin-top: 12px;
  font-size: 0.98rem;
  color: #6a7080;
  line-height: 1.9;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-bottom-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  border-bottom-color: rgba(148, 163, 184, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

/* LOGO */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Montserrat", system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  background: radial-gradient(circle at 0% 0%, #2dd4bf, #0f172a);
  color: #ffffff;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.2);
}

.logo-mark.small {
  width: 28px;
  height: 28px;
  font-size: 0.9rem;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-main {
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 2.02rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-shadow: rgb(255, 255, 255) 1px 0 10px;
}

.logo-sub {
  font-size: 0.7rem;
  color: #94a3b8;
}

/* NAV */
.nav {
  position: relative;
}

.nav-toggle {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  padding: 0;
  /* ←ここ重要（中身のズレを消す） */
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  /* 36pxボタンにちょうど良い */
  height: 2px;
  background-color: #0f172a;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  transform-origin: center;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

/* 閉じてる状態：上下にずらして3本線 */
.nav-toggle span:nth-child(1) {
  transform: translate(-50%, calc(-50% - 6px));
}

.nav-toggle span:nth-child(2) {
  transform: translate(-50%, -50%);
}

.nav-toggle span:nth-child(3) {
  transform: translate(-50%, calc(-50% + 6px));
}

/* 開いてる状態：中心で回してXを作る */
.nav-toggle.is-open span:nth-child(1) {
  transform: translate(-50%, -50%) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.nav-list {
  position: absolute;
  inset-inline: auto 0;
  top: 48px;
  min-width: max-content;
  padding: 12px 18px;
  border-radius: 10px;
  background-color: rgba(15, 23, 42, 0.96);
  color: #e2e8f0;
  display: none;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.4);
}

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

.nav-list a {
  font-size: 0.82rem;
  white-space: nowrap;
}

.nav-cta {
  padding: 6px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #22c55e, #0ea5e9);
  color: #f8fafc;
  font-weight: 500;
}

/* Desktop nav */
@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .nav-list {
    position: static;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    background: transparent;
    color: inherit;
    padding: 0;
    gap: 24px;
    box-shadow: none;
  }

  .nav-list a {
    font-size: 0.84rem;
  }

  .nav-cta {
    margin-left: 12px;
  }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  color: #f8fafc;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding-top: 72px;
  /* header height */
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;

  background-image:
    linear-gradient(120deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.35), rgba(15, 23, 42, 0.8)),
    url("../images/backimage.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  transform: translateY(0) scale(1.03);
  transform-origin: center;

  filter: saturate(1.05) contrast(1.05);
  will-change: transform;
}

/* .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(120deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.35), rgba(15, 23, 42, 0.8)),
    url("../images/backimage.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform: scale(1.03);
  filter: saturate(1.05) contrast(1.05);
  transform-origin: center;
} */

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(45, 212, 191, 0.16), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(56, 189, 248, 0.18), transparent 55%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 15% 0 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
  background-color: rgba(15, 23, 42, 0.4);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.3;
  letter-spacing: 0.08em;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 1.6s ease-out forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-lead {
  font-size: 0.98rem;
  line-height: 1.9;
  color: #cbd5f5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.hero-tag {
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  background-color: rgba(15, 23, 42, 0.68);
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #e2e8f0;
  opacity: 0.8;
}

.hero-scroll-line {
  display: inline-block;
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, rgba(226, 232, 240, 0), rgba(226, 232, 240, 0.6));
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: -8px;
  height: 12px;
  background: linear-gradient(to bottom, rgba(148, 163, 184, 0.0), rgba(148, 163, 184, 0.9));
  animation: scroll-line 1.6s infinite;
}

@keyframes scroll-line {
  0% {
    transform: translateY(0);
    opacity: 0;
  }

  20% {
    opacity: 1;
  }

  100% {
    transform: translateY(32px);
    opacity: 0;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn.primary {
  background: linear-gradient(135deg, #22c55e, #0ea5e9);
  color: #f8fafc;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.35);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.45);
}

.btn.ghost {
  background-color: rgba(15, 23, 42, 0.4);
  color: #e2e8f0;
  border-color: rgba(148, 163, 184, 0.6);
}

.btn.ghost:hover {
  background-color: rgba(15, 23, 42, 0.7);
}

.btn.full {
  width: 100%;
}

/* ===== 固定 Webアプリ起動ボタン ===== */
.launch-fab {
  position: fixed;
  right: 16px;
  bottom: 18px;
  z-index: 60;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.8);
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.4), 0 18px 40px rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(10px);
}

.launch-fab-main {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.launch-fab-sub {
  font-size: 0.75rem;
  color: #000000;
}

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

@media (max-width: 640px) {
  .launch-fab {
    right: 12px;
    bottom: 16px;
    padding-inline: 16px;
  }

  .launch-fab-main {
    font-size: 0.86rem;
  }
}

/* ===== CONCEPT ===== */
.concept {
  background-color: #ffffff;
}

.concept-inner {
  gap: 48px;
}

.concept-main {
  flex: 1.8;
}

.concept-aside {
  flex: 1.1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.concept-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.concept-item {
  padding: 18px 18px 18px 20px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  background: radial-gradient(circle at 0 0, rgba(45, 212, 191, 0.05), transparent 60%);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 4px;
  align-items: baseline;
}

.concept-number {
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: #a1a6b5;
}

.concept-item h3 {
  font-size: 0.96rem;
  font-weight: 600;
}

.concept-item p {
  grid-column: 2 / -1;
  font-size: 0.92rem;
  color: #6a7080;
  line-height: 1.8;
}

.concept-card {
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.concept-card.soft {
  background: #f9fafb;
}

.concept-kpi-label {
  font-size: 0.78rem;
  color: #9ca3af;
}

.concept-kpi-main {
  margin-top: 6px;
  font-size: 1.4rem;
  font-weight: 600;
}

.concept-kpi-main span {
  font-size: 2.2rem;
}

.concept-kpi-note {
  margin-top: 6px;
  font-size: 0.76rem;
  color: #9ca3af;
}

.concept-note {
  font-size: 0.86rem;
  color: #6b7280;
  line-height: 1.8;
}

/* ===== FEATURES ===== */
.features {
  background-color: #f8fafc;
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 20px 20px;
  border-radius: 18px;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  border-color: rgba(56, 189, 248, 0.45);
}

.feature-icon {
  display: inline-flex;
}

.feature-icon-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #4b5563;
}

.feature-card h3 {
  font-size: 1rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.8;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.feature-tags li {
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 999px;
  background-color: #eff6ff;
  color: #2563eb;
}

/* ===== SCREENS (SLIDER) ===== */
.screens {
  background-color: #f4f9fd;
}

.screen-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;

}

.screen-card {
  padding: 18px 18px 22px;
  border-radius: 20px;
  border: 1px solid #e5e7eb;
  background-color: #ffffff;

}

.screen-card.large {
  grid-column: 1 / -1;
}

.screen-slider {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid #e5e7eb;
  background: #020617;
}

.screen-slides {
  position: relative;
  width: 100%;
  height: 100%;
  padding-bottom: 56.25%;
  aspect-ratio: 16 / 9;
  /* 16:9 */
}

.screen-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.screen-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screen-slide.is-active {
  opacity: 1;
}

@media (max-width: 768px) {
  .screen-slides {
    aspect-ratio: 9 / 16;
  }

  .screen-slide img {
    object-fit: contain;
  }
}

.screen-dots {
  position: absolute;
  inset-inline: 0;
  bottom: 12px;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.screen-dots button {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: none;
  padding: 0;
  cursor: pointer;
  background-color: rgba(148, 163, 184, 0.7);
  transition: width 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
  opacity: 0.7;
}

.screen-dots button.is-active {
  width: 18px;
  background-color: #38bdf8;
  opacity: 1;
}

.screen-caption {
  margin-top: 10px;
  font-size: 0.8rem;
  color: #9ca3af;
}

/* ===== PRICING ===== */
.pricing {
  background-color: #f4f9fd;
}

.pricing-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  /* max-width: 560px; */
  margin-inline: auto;
}

.price-card {
  position: relative;
  padding: 20px 20px 22px;
  border-radius: 20px;
  border: 1px solid #e5e7eb;
  background-color: #f9fafb;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.price-card.featured {
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.18), transparent 60%), #0f172a;
  color: #e5e7eb;
  border-color: transparent;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.4);
}

.price-badge {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(226, 232, 240, 0.9);
  background-color: rgba(15, 23, 42, 0.8);
}

.price-name {
  font-size: 0.98rem;
}

.price-price {
  margin-top: 4px;
  font-size: 1.2rem;
  font-weight: 600;
}

.price-note {
  font-size: 0.86rem;
  color: #cbd5f5;
}

.price-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.86rem;
}

.price-list li {
  position: relative;
  padding-left: 14px;
}

.price-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background-color: #a5b4fc;
}

/* ===== CTA / FORM ===== */
.cta {
  background: radial-gradient(circle at 0 0, #0f172a, #020617);
  color: #e5e7eb;
}

.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr);
  gap: 32px;
}

.cta-main .section-title {
  color: #e5e7eb;
}

.cta-main .section-lead {
  color: #cbd5f5;
}

.cta-form {
  background: rgba(15, 23, 42, 0.82);
  border-radius: 24px;
  padding: 22px 20px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.65);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.form-row label {
  font-size: 0.82rem;
  color: #e2e8f0;
}

.form-row input,
.form-row textarea {
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background-color: rgba(15, 23, 42, 0.76);
  padding: 8px 10px;
  color: #f9fafb;
  font-size: 0.88rem;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: #64748b;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid #38bdf8;
  outline-offset: 1px;
}

.form-note {
  margin-top: 6px;
  font-size: 0.74rem;
  color: #94a3b8;
}

/* SUPPORT NOTES */
.support-notes {
  margin-top: 20px;
  padding: 16px 16px 14px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(15, 23, 42, 0.5);
}

.support-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.9);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.support-notes ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.86rem;
  color: #e2e8f0;
}

.support-notes strong {
  font-weight: 600;
}

/* ===== SUPPORT (FAQ + CONTACT) ===== */
.support {
  background-color: #f4f9fd;
}

.support-inner {
  gap: 32px;
}

.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: flex-start;
}

.support-column {
  background-color: #ffffff;
  border-radius: 24px;
  padding: 22px 20px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.04);
}

.section-title.small {
  font-size: 1.2rem;
}

.faq-search {
  margin-top: 16px;
}

.faq-search input[type="search"] {
  width: 100%;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  padding: 8px 12px;
  font-size: 0.88rem;
  background-color: #f9fafb;
}

.faq-search input[type="search"]:focus {
  outline: 2px solid #38bdf8;
  outline-offset: 1px;
  background-color: #ffffff;
}

.faq-list {
  margin-top: 14px;
  border-radius: 18px;
  border: 1px solid #e5e7eb;
  background-color: #ffffff;
  /* 高さが伸びすぎないように最大高さを制限して内部スクロール */
  max-height: 320px;
  overflow-y: auto;
}

.faq-item {
  border-bottom: 1px solid #edf2f7;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  padding: 10px 14px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
}

.faq-question-title {
  font-size: 0.9rem;
  font-weight: 500;
}

.faq-q-badge {
  font-size: 0.74rem;
  color: #64748b;
  margin-right: 4px;
}

.faq-question-toggle {
  margin-left: auto;
  font-size: 0.8rem;
  color: #94a3b8;
}

.faq-answer {
  padding: 0 14px 10px 14px;
  font-size: 0.86rem;
  color: #6b7280;
  line-height: 1.7;
  display: none;
}

.faq-item.is-open .faq-answer {
  display: block;
}

.faq-item.is-open .faq-question-toggle {
  transform: rotate(90deg);
}

.faq-note {
  margin-top: 8px;
  font-size: 0.78rem;
  color: #9ca3af;
}

/* CONTACT */
.contact-toggle {
  margin-top: 18px;
  padding: 3px;
  border-radius: 999px;
  background-color: #f1f5f9;
  display: inline-flex;
  gap: 4px;
}

.toggle-btn {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  cursor: pointer;
  color: #64748b;
}

.toggle-btn.is-active {
  background: #0f172a;
  color: #e5e7eb;
}

.contact-form {
  margin-top: 16px;
}

.contact-mail-row {
  margin-top: 4px;
}

.form-note.small {
  font-size: 0.76rem;
}

/* Responsive */
@media (max-width: 900px) {
  .support-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ===== FOOTER ===== */
.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e5e7eb;
  padding: 18px 0 22px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-copy {
  margin-top: 6px;
  font-size: 0.8rem;
  color: #9ca3af;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
  color: #6b7280;
}

/* ===== UTILITIES ===== */
.only-sp {
  display: inline;
}

.only-pc {
  display: none;
}

@media (min-width: 720px) {
  .only-sp {
    display: none;
  }

  .only-pc {
    display: inline;
  }
}

/* ===== RESPONSIVE LAYOUT ===== */
@media (min-width: 900px) {
  .section {
    padding: 110px 0;
  }

  .section-inner {
    gap: 50px;
  }

  .concept-inner {
    flex-direction: row;
    align-items: flex-start;
  }

  .concept-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .screen-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
    align-items: center;
  }

  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ===== SIMPLE SCROLL ANIMATION ===== */
.observed {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.observed.is-visible {
  opacity: 1;
  transform: translateY(0);
}

[hidden] {
  display: none !important;
}

.contact-answer {
  margin-top: 10px;
  margin-bottom: 10px;
  padding: 12px 14px;
  border-radius: 18px;
  background: #0f172a;
  color: #e5e7eb;
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.35);
}

.contact-answer-label {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 6px;
}

.contact-answer-body {
  font-size: 0.86rem;
  line-height: 1.8;
  white-space: pre-wrap;
  /* 改行もそのまま表示 */
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.03);
  }
}

.btn.primary {
  animation: pulse 6s ease-in-out infinite;
}

/* ===== CASES / RESULTS ===== */
.cases {
  background-color: #ffffff;
}

.case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  width: 100%;
}

.case-card h2 {
  font-size: 1rem;
}

.case-summary {
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.9;
}

.case-note {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.88rem;
  color: #6a7080;
}

.case-metrics {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid #eef2f7;
  display: grid;
  gap: 10px;
}

.case-metrics li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.case-metrics span {
  font-size: 0.86rem;
  color: #6b7280;
}

.case-metrics strong {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.case-quote {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.08), rgba(14, 165, 233, 0.08));
  border: 1px solid rgba(14, 165, 233, 0.18);
  font-size: 0.88rem;
  color: #334155;
  line-height: 1.8;
}

.case-cta {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* desktop */
@media (min-width: 900px) {
  .case-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 詳しく見る（高級感：控えめサイン） */
.card-link{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  color: rgba(11,18,32,.55);
  text-decoration: none;
}

.card-link::after{
  content: "→";
  font-size: 12px;
  opacity: .7;
  transform: translateY(-.5px);
}

.feature-card:hover .card-link{
  color: rgba(11,18,32,.78);
}

.feature-card:hover .card-link::after{
  opacity: .9;
  transform: translate(2px,-.5px);
}