@charset "UTF-8";

/* ==========================================================
   AI Service Page - Dedicated stylesheet
   ========================================================== */

/* ---------- カスタムプロパティ ---------- */
:root {
  --ai-text-heading: #0A0A0A;
  --ai-text-body: #1F1F1F;
  --ai-text-sub: #555555;
  --ai-text-caption: #8B8B8B;
  --ai-bg-main: #FFFFFF;
  --ai-bg-alt: #F7F7F5;
  --ai-bg-dark: #0A0A0A;
  --ai-bg-card: #FAFAFA;
  --ai-border: #E5E5E3;
  --ai-accent: #2B4CFF;
  --ai-accent-hover: #1A38D9;
  --ai-accent-light: #EEF1FF;

  --ai-sp-xs: 4px;
  --ai-sp-sm: 8px;
  --ai-sp-md: 16px;
  --ai-sp-lg: 32px;
  --ai-sp-xl: 56px;
  --ai-sp-2xl: 96px;
  --ai-sp-3xl: 160px;

  --ai-font-ja: "Noto Sans JP", "Helvetica Neue", "游ゴシック", "Yu Gothic", YuGothic, -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", sans-serif;
  --ai-font-en: "Inter", "Helvetica Neue", Arial, sans-serif;

  --ai-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ai-transition-fast: 0.2s ease;
  --ai-transition: 0.3s var(--ai-ease-out);

  --ai-container-max: 1200px;
  --ai-radius-sm: 8px;
  --ai-radius-md: 12px;
  --ai-radius-lg: 16px;
}

@media (max-width: 767px) {
  :root {
    --ai-sp-2xl: 64px;
    --ai-sp-3xl: 96px;
    --ai-sp-xl: 40px;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body.ai-body {
  margin: 0;
  padding: 0;
  font-family: var(--ai-font-ja);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ai-text-body);
  background: var(--ai-bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, p, ul, li, figure {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

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

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

em {
  font-style: normal;
}

/* ---------- Container / Utility ---------- */
.ai-container {
  width: 100%;
  max-width: var(--ai-container-max);
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 1023px) {
  .ai-container { padding: 0 32px; }
}
@media (max-width: 767px) {
  .ai-container { padding: 0 20px; }
}

.ai-label {
  display: inline-block;
  font-family: var(--ai-font-en);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ai-text-caption);
  margin-bottom: var(--ai-sp-md);
}

@media (max-width: 767px) {
  .ai-label { font-size: 12px; }
}

.ai-br-pc { display: inline; }
.ai-br-sp { display: none; }
@media (max-width: 767px) {
  .ai-br-pc { display: none; }
  .ai-br-sp { display: inline; }
}

/* ---------- Section header ---------- */
.ai-section-header {
  text-align: center;
  margin-bottom: var(--ai-sp-xl);
}

.ai-section-title {
  font-family: var(--ai-font-ja);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
}

@media (max-width: 767px) {
  .ai-section-title { font-size: 28px; }
}

.ai-section-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ai-text-sub);
  max-width: 680px;
  margin: 0 auto;
}

@media (max-width: 767px) {
  .ai-section-lead { font-size: 15px; }
}

/* ---------- Buttons ---------- */
.ai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-family: var(--ai-font-ja);
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--ai-radius-sm);
  transition: all var(--ai-transition-fast);
  cursor: pointer;
  border: none;
  text-align: center;
  line-height: 1;
  white-space: nowrap;
}

.ai-btn--primary {
  background: var(--ai-accent);
  color: #FFFFFF;
}

.ai-btn--primary:hover {
  background: var(--ai-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 76, 255, 0.25);
}

.ai-btn--outline {
  background: transparent;
  color: var(--ai-text-heading);
  border: 1.5px solid var(--ai-border);
}

.ai-btn--outline:hover {
  border-color: var(--ai-accent);
  color: var(--ai-accent);
}

.ai-btn--ghost {
  background: transparent;
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.ai-btn--ghost:hover {
  border-color: #FFFFFF;
  background: rgba(255, 255, 255, 0.05);
}

.ai-btn--large {
  padding: 20px 48px;
  font-size: 17px;
}

@media (max-width: 767px) {
  .ai-btn { padding: 14px 24px; font-size: 15px; }
  .ai-btn--large { padding: 18px 32px; font-size: 16px; width: 100%; max-width: 360px; }
}

/* ========================================================
   Header
   ======================================================== */
.ai-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--ai-border);
}

.ai-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.ai-header__logo {
  font-family: var(--ai-font-en);
  font-size: 18px;
  font-weight: 700;
  color: var(--ai-text-heading);
  letter-spacing: -0.01em;
}

.ai-header__nav {
  display: flex;
  align-items: center;
  gap: var(--ai-sp-lg);
}

.ai-header__nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--ai-text-body);
  transition: color var(--ai-transition-fast);
  position: relative;
}

.ai-header__nav-link:hover {
  color: var(--ai-accent);
}

.ai-header__nav-link--current {
  color: var(--ai-accent);
}

.ai-header__nav-link--current::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ai-accent);
  border-radius: 2px;
}

.ai-header__nav-link--cta {
  background: var(--ai-text-heading);
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: var(--ai-radius-sm);
}

.ai-header__nav-link--cta:hover {
  background: var(--ai-accent);
  color: #FFFFFF;
}

.ai-header__nav-link--external {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.ai-header__nav-link--external::after {
  display: none;
}
.ai-header__nav-link__arrow {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  transform: translateY(-1px);
}

@media (max-width: 767px) {
  .ai-header__inner { height: 56px; }
  .ai-header__logo { font-size: 14px; white-space: nowrap; }
  .ai-header__nav { gap: 12px; }
  .ai-header__nav-link { font-size: 12px; white-space: nowrap; }
  .ai-header__nav-link--cta { padding: 7px 11px; font-size: 11px; }
  .ai-header__nav-link__arrow { width: 9px; height: 9px; }
}

@media (max-width: 380px) {
  .ai-header__logo { font-size: 12px; }
  .ai-header__nav { gap: 8px; }
  .ai-header__nav-link { font-size: 11px; }
  .ai-header__nav-link--cta { padding: 6px 9px; font-size: 10px; }
}

/* ========================================================
   Hero
   ======================================================== */
.ai-hero {
  position: relative;
  background-color: var(--ai-bg-dark);
  background-image: url('../ai-service/img/hero-bg-v2.png');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  color: #FFFFFF;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--ai-sp-3xl) 0;
}
.ai-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--ai-bg-dark) 0%, rgba(11, 13, 23, 0.7) 40%, rgba(11, 13, 23, 0) 70%);
  pointer-events: none;
  z-index: 1;
}

.ai-hero > .ai-container {
  position: relative;
  z-index: 2;
}

.ai-hero__label {
  color: rgba(255, 255, 255, 0.5);
}

.ai-hero__title {
  font-family: var(--ai-font-ja);
  font-size: 64px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: var(--ai-sp-lg);
}

.ai-hero__lead {
  font-size: 20px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--ai-sp-xl);
  max-width: 620px;
}

.ai-hero__cta {
  display: flex;
  gap: var(--ai-sp-md);
  flex-wrap: wrap;
}

.ai-hero__glow {
  position: absolute;
  bottom: -200px;
  right: -200px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(43, 76, 255, 0.35) 0%, rgba(43, 76, 255, 0) 70%);
  opacity: 0.6;
  pointer-events: none;
  z-index: 1;
}

@media (max-width: 1023px) {
  .ai-hero__title { font-size: 48px; }
  .ai-hero__lead { font-size: 18px; }
}
@media (max-width: 767px) {
  .ai-hero {
    min-height: auto;
    padding: var(--ai-sp-2xl) 0;
  }
  .ai-hero__title { font-size: 36px; line-height: 1.25; }
  .ai-hero__lead { font-size: 16px; }
  .ai-hero__cta { flex-direction: column; align-items: stretch; }
  .ai-hero__cta .ai-btn { width: 100%; }
  .ai-hero__glow {
    width: 500px;
    height: 500px;
    bottom: -150px;
    right: -150px;
  }
}

/* ========================================================
   KPI Bar
   ======================================================== */
.ai-kpi {
  background: var(--ai-bg-main);
  padding: var(--ai-sp-2xl) 0;
  border-bottom: 1px solid var(--ai-border);
}

.ai-kpi__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--ai-sp-lg);
}

.ai-kpi__item {
  text-align: center;
  padding: 0 var(--ai-sp-md);
  border-right: 1px solid var(--ai-border);
}

.ai-kpi__item:last-child {
  border-right: none;
}

.ai-kpi__value {
  font-family: var(--ai-font-en);
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-sm);
  font-feature-settings: "tnum" on;
}

.ai-kpi__value em {
  color: var(--ai-accent);
  font-weight: 800;
  font-style: normal;
}

.ai-kpi__unit {
  font-size: 24px;
  font-weight: 600;
  margin-left: 4px;
  color: var(--ai-text-body);
}

.ai-kpi__label {
  font-size: 14px;
  color: var(--ai-text-sub);
  line-height: 1.6;
}

@media (max-width: 1023px) {
  .ai-kpi__value { font-size: 44px; }
  .ai-kpi__unit { font-size: 20px; }
}
@media (max-width: 767px) {
  .ai-kpi { padding: var(--ai-sp-xl) 0; }
  .ai-kpi__list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--ai-sp-lg) var(--ai-sp-md);
  }
  .ai-kpi__item {
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--ai-border);
    padding-bottom: var(--ai-sp-md);
  }
  .ai-kpi__item:nth-child(n+3) { border-bottom: none; padding-bottom: 0; padding-top: var(--ai-sp-md); }
  .ai-kpi__item:nth-child(2n) { border-right: none; }
  .ai-kpi__value { font-size: 40px; }
  .ai-kpi__unit { font-size: 16px; }
  .ai-kpi__label { font-size: 12px; }
}

/* ========================================================
   Services
   ======================================================== */
.ai-services {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-main);
}

.ai-services__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ai-sp-lg);
}

.ai-services__card {
  background: var(--ai-bg-card);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-lg);
  transition: all var(--ai-transition);
}

.ai-services__card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent);
  box-shadow: 0 12px 32px rgba(10, 10, 10, 0.06);
}

.ai-services__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--ai-radius-sm);
  background: var(--ai-accent-light);
  color: var(--ai-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--ai-sp-md);
}

.ai-services__title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-services__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ai-text-sub);
}

@media (max-width: 1023px) {
  .ai-services__list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .ai-services__list { grid-template-columns: 1fr; }
  .ai-services__title { font-size: 19px; }
}

/* ========================================================
   UseCases
   ======================================================== */
.ai-usecases {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-alt);
}

.ai-usecases__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ai-sp-lg);
}

.ai-usecases__card {
  background: #FFFFFF;
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-lg);
  border: 1px solid var(--ai-border);
}

.ai-usecases__badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--ai-accent-light);
  color: var(--ai-accent);
  font-size: 12px;
  font-weight: 600;
  border-radius: 99px;
  margin-bottom: var(--ai-sp-md);
  letter-spacing: 0.02em;
}

.ai-usecases__title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-usecases__flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--ai-sp-md);
  align-items: center;
  margin-bottom: var(--ai-sp-md);
  padding: var(--ai-sp-md);
  background: var(--ai-bg-alt);
  border-radius: var(--ai-radius-md);
}

.ai-usecases__step {
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-sm);
}

.ai-usecases__step-label {
  font-family: var(--ai-font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ai-text-caption);
}

.ai-usecases__step p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ai-text-body);
}

.ai-usecases__arrow {
  font-size: 20px;
  color: var(--ai-accent);
  font-weight: 400;
  line-height: 1;
}

.ai-usecases__result {
  font-size: 15px;
  font-weight: 600;
  color: var(--ai-text-body);
  padding: var(--ai-sp-sm) var(--ai-sp-md);
  background: var(--ai-accent-light);
  border-radius: var(--ai-radius-sm);
  display: inline-block;
}

.ai-usecases__result em {
  color: var(--ai-accent);
  font-weight: 800;
}

@media (max-width: 767px) {
  .ai-usecases__list { grid-template-columns: 1fr; }
  .ai-usecases__flow {
    grid-template-columns: 1fr;
    gap: var(--ai-sp-sm);
  }
  .ai-usecases__arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
  .ai-usecases__title { font-size: 18px; }
  .ai-usecases__result { font-size: 14px; }
}

/* ========================================================
   Why Us
   ======================================================== */
.ai-why {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-main);
}

.ai-why__profile {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 32px 36px;
  margin-bottom: 56px;
  background: linear-gradient(135deg, rgba(43, 76, 255, 0.06) 0%, rgba(43, 76, 255, 0.02) 100%);
  border: 1px solid rgba(43, 76, 255, 0.12);
  border-radius: var(--ai-radius-md);
}
.ai-why__profile-photo-wrap {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(43, 76, 255, 0.25);
  box-shadow: 0 4px 20px rgba(43, 76, 255, 0.15);
}
.ai-why__profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) brightness(0.97);
}
.ai-why__profile-text {
  flex: 1;
  min-width: 0;
}
.ai-why__profile-name {
  font-family: var(--ai-font-ja);
  font-size: 22px;
  font-weight: 700;
  color: var(--ai-text-heading);
  margin-bottom: 6px;
}
.ai-why__profile-name span {
  font-family: var(--ai-font-en);
  font-size: 15px;
  font-weight: 400;
  color: var(--ai-text-sub);
  margin-left: 6px;
}
.ai-why__profile-role {
  font-size: 14px;
  font-weight: 600;
  color: var(--ai-accent);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.ai-why__profile-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ai-text-body);
}

@media (max-width: 767px) {
  .ai-why__profile {
    flex-direction: column;
    text-align: center;
    gap: 20px;
    padding: 28px 20px;
  }
  .ai-why__profile-photo-wrap {
    width: 100px;
    height: 100px;
  }
  .ai-why__profile-name { font-size: 20px; }
  .ai-why__profile-desc { font-size: 14px; }
}

.ai-why__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ai-sp-xl) var(--ai-sp-lg);
}

.ai-why__item {
  position: relative;
  padding-left: 80px;
}

.ai-why__num {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--ai-font-en);
  font-size: 40px;
  font-weight: 300;
  line-height: 1;
  color: var(--ai-accent);
  letter-spacing: -0.02em;
}

.ai-why__title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-why__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ai-text-sub);
}

@media (max-width: 767px) {
  .ai-why__list {
    grid-template-columns: 1fr;
    gap: var(--ai-sp-xl);
  }
  .ai-why__item { padding-left: 60px; }
  .ai-why__num { font-size: 32px; }
  .ai-why__title { font-size: 18px; }
}

/* ========================================================
   Support (導入後サポート)
   ======================================================== */
.ai-support {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-alt);
}

.ai-support__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ai-sp-lg);
  margin-bottom: var(--ai-sp-xl);
}

.ai-support__card {
  background: #FFFFFF;
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-lg);
  position: relative;
  transition: all var(--ai-transition);
}

.ai-support__card:hover {
  transform: translateY(-4px);
  border-color: var(--ai-accent);
  box-shadow: 0 12px 32px rgba(10, 10, 10, 0.06);
}

.ai-support__num {
  font-family: var(--ai-font-en);
  font-size: 28px;
  font-weight: 300;
  line-height: 1;
  color: var(--ai-accent);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.02em;
}

.ai-support__title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-support__desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ai-text-sub);
}

.ai-support__table-wrap {
  background: #FFFFFF;
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-lg);
}

.ai-support__table-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-support__table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ai-support__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 520px;
}

.ai-support__table thead th {
  background: var(--ai-bg-alt);
  color: var(--ai-text-heading);
  font-weight: 700;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--ai-border);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.ai-support__table tbody th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--ai-border);
  font-weight: 600;
  color: var(--ai-text-body);
  background: #FFFFFF;
}

.ai-support__table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ai-border);
  color: var(--ai-text-sub);
  vertical-align: middle;
}

.ai-support__table tbody tr:last-child th,
.ai-support__table tbody tr:last-child td {
  border-bottom: none;
}

.ai-support__table-note {
  margin-top: var(--ai-sp-md);
  font-size: 13px;
  color: var(--ai-text-caption);
  line-height: 1.7;
}

@media (max-width: 767px) {
  .ai-support__list { grid-template-columns: 1fr; }
  .ai-support__title { font-size: 17px; }
  .ai-support__desc { font-size: 14px; }
  .ai-support__table-wrap { padding: var(--ai-sp-md); }
  .ai-support__table { font-size: 13px; }
  .ai-support__table thead th,
  .ai-support__table tbody th,
  .ai-support__table tbody td { padding: 10px 12px; }
}

/* ========================================================
   Pricing
   ======================================================== */
.ai-pricing {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-alt);
}

.ai-pricing__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ai-sp-lg);
  align-items: stretch;
}

.ai-pricing__card {
  background: #FFFFFF;
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--ai-transition);
}

.ai-pricing__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(10, 10, 10, 0.06);
}

.ai-pricing__card--featured {
  border: 2px solid var(--ai-accent);
  transform: translateY(-8px);
}

.ai-pricing__card--featured:hover {
  transform: translateY(-12px);
}

.ai-pricing__ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ai-accent);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 99px;
  letter-spacing: 0.05em;
}

.ai-pricing__tier {
  font-family: var(--ai-font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ai-text-caption);
  margin-bottom: var(--ai-sp-sm);
}

.ai-pricing__name {
  font-size: 22px;
  font-weight: 700;
  color: var(--ai-text-heading);
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-pricing__price {
  font-family: var(--ai-font-en);
  font-size: 16px;
  color: var(--ai-text-body);
  margin-bottom: var(--ai-sp-sm);
  line-height: 1;
  font-feature-settings: "tnum" on;
}

.ai-pricing__price em {
  font-size: 48px;
  font-weight: 800;
  color: var(--ai-text-heading);
  letter-spacing: -0.02em;
}

.ai-pricing__price-from {
  font-size: 20px;
  font-weight: 600;
  color: var(--ai-text-body);
  margin-right: 2px;
}

.ai-pricing__price-unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--ai-text-sub);
  margin-left: 4px;
}

.ai-pricing__note {
  font-size: 13px;
  color: var(--ai-text-sub);
  margin-bottom: var(--ai-sp-lg);
  padding-bottom: var(--ai-sp-lg);
  border-bottom: 1px solid var(--ai-border);
}

.ai-pricing__features {
  margin-bottom: var(--ai-sp-lg);
  flex: 1;
}

.ai-pricing__features li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ai-text-body);
  margin-bottom: var(--ai-sp-sm);
}

.ai-pricing__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--ai-accent);
  border-bottom: 2px solid var(--ai-accent);
  transform: rotate(-45deg);
}

.ai-pricing__card .ai-btn {
  width: 100%;
}

.ai-pricing__disclaimer {
  text-align: center;
  font-size: 13px;
  color: var(--ai-text-caption);
  line-height: 1.8;
  margin-top: var(--ai-sp-xl);
}

.ai-pricing__disclaimer-link {
  color: var(--ai-accent);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--ai-transition-fast);
}

.ai-pricing__disclaimer-link:hover {
  color: var(--ai-accent-hover);
}

.ai-faq__link {
  color: var(--ai-accent);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--ai-transition-fast);
}

.ai-faq__link:hover {
  color: var(--ai-accent-hover);
}

/* ========================================================
   API Cost Notice
   ======================================================== */
.ai-apicost {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-main);
  scroll-margin-top: 80px;
}

.ai-apicost__panel {
  max-width: 880px;
  margin: 0 auto;
  background: var(--ai-bg-card);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-lg);
  padding: var(--ai-sp-xl);
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-lg);
}

.ai-apicost__row {
  padding-bottom: var(--ai-sp-lg);
  border-bottom: 1px solid var(--ai-border);
}

.ai-apicost__row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.ai-apicost__row--highlight {
  background: var(--ai-accent-light);
  border: 1px solid rgba(43, 76, 255, 0.2);
  border-radius: var(--ai-radius-md);
  padding: var(--ai-sp-lg);
  margin: var(--ai-sp-sm) 0;
}

.ai-apicost__row--highlight + .ai-apicost__row {
  border-top: none;
}

.ai-apicost__row-head {
  display: flex;
  align-items: center;
  gap: var(--ai-sp-md);
  margin-bottom: var(--ai-sp-sm);
}

.ai-apicost__row-icon {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: var(--ai-radius-sm);
  background: #FFFFFF;
  color: var(--ai-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(43, 76, 255, 0.2);
}

.ai-apicost__row--highlight .ai-apicost__row-icon {
  background: var(--ai-accent);
  color: #FFFFFF;
  border-color: var(--ai-accent);
}

.ai-apicost__row-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ai-text-heading);
  letter-spacing: -0.01em;
}

.ai-apicost__row-desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ai-text-sub);
}

.ai-apicost__row-desc strong {
  color: var(--ai-text-heading);
  font-weight: 700;
}

.ai-apicost__price-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ai-sp-md);
  margin: var(--ai-sp-md) 0;
}

.ai-apicost__price-item {
  background: #FFFFFF;
  border: 1px solid rgba(43, 76, 255, 0.15);
  border-radius: var(--ai-radius-md);
  padding: var(--ai-sp-md);
}

.ai-apicost__price-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ai-text-sub);
  margin-bottom: 6px;
  line-height: 1.5;
}

.ai-apicost__price-value {
  font-family: var(--ai-font-en);
  font-size: 14px;
  color: var(--ai-text-sub);
  line-height: 1;
  font-feature-settings: "tnum" on;
}

.ai-apicost__price-value em {
  font-size: 32px;
  font-weight: 800;
  color: var(--ai-accent);
  margin-right: 6px;
  letter-spacing: -0.02em;
}

.ai-apicost__price-value span {
  font-size: 13px;
  color: var(--ai-text-sub);
}

.ai-apicost__row-note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ai-text-sub);
  margin-top: var(--ai-sp-sm);
}

.ai-apicost__row-note strong {
  color: var(--ai-text-heading);
  font-weight: 700;
}

.ai-apicost__row-note a {
  color: var(--ai-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
}

.ai-apicost__row-note a:hover {
  color: var(--ai-accent-hover);
}

@media (max-width: 767px) {
  .ai-apicost__panel { padding: var(--ai-sp-lg) var(--ai-sp-md); }
  .ai-apicost__row-title { font-size: 16px; }
  .ai-apicost__row-desc { font-size: 14px; }
  .ai-apicost__price-grid { grid-template-columns: 1fr; }
  .ai-apicost__price-value em { font-size: 28px; }
}

/* ========================================================
   FAQ
   ======================================================== */
.ai-faq {
  padding: var(--ai-sp-2xl) 0;
  background: var(--ai-bg-alt);
}

.ai-faq__list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--ai-sp-md);
}

.ai-faq__item {
  background: #FFFFFF;
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  transition: border-color var(--ai-transition-fast), box-shadow var(--ai-transition-fast);
}

.ai-faq__item:hover {
  border-color: rgba(43, 76, 255, 0.3);
}

.ai-faq__details[open] {
  box-shadow: 0 4px 16px rgba(10, 10, 10, 0.04);
}

.ai-faq__details[open] .ai-faq__item,
.ai-faq__item:has(.ai-faq__details[open]) {
  border-color: var(--ai-accent);
}

.ai-faq__summary {
  display: flex;
  align-items: center;
  gap: var(--ai-sp-md);
  padding: var(--ai-sp-md) var(--ai-sp-lg);
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--ai-text-heading);
  line-height: 1.5;
  transition: color var(--ai-transition-fast);
}

.ai-faq__summary::-webkit-details-marker {
  display: none;
}

.ai-faq__summary:hover {
  color: var(--ai-accent);
}

.ai-faq__q {
  flex: 0 0 auto;
  font-family: var(--ai-font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ai-accent);
  background: var(--ai-accent-light);
  padding: 4px 10px;
  border-radius: var(--ai-radius-sm);
  line-height: 1;
}

.ai-faq__question {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.ai-faq__icon {
  flex: 0 0 auto;
  position: relative;
  width: 16px;
  height: 16px;
}

.ai-faq__icon::before,
.ai-faq__icon::after {
  content: "";
  position: absolute;
  background: var(--ai-text-sub);
  transition: transform var(--ai-transition-fast), background var(--ai-transition-fast);
}

.ai-faq__icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.ai-faq__icon::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.ai-faq__details[open] .ai-faq__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.ai-faq__details[open] .ai-faq__icon::before {
  background: var(--ai-accent);
}

.ai-faq__summary:hover .ai-faq__icon::before,
.ai-faq__summary:hover .ai-faq__icon::after {
  background: var(--ai-accent);
}

.ai-faq__answer {
  padding: 0 var(--ai-sp-lg) var(--ai-sp-lg);
  color: var(--ai-text-sub);
  font-size: 15px;
  line-height: 1.85;
  border-top: 1px solid var(--ai-border);
  padding-top: var(--ai-sp-md);
  margin-top: 0;
}

.ai-faq__answer p {
  margin-bottom: var(--ai-sp-sm);
}

.ai-faq__answer p:last-child {
  margin-bottom: 0;
}

.ai-faq__answer strong {
  color: var(--ai-text-heading);
  font-weight: 700;
}

.ai-faq__steps,
.ai-faq__bullets {
  margin: var(--ai-sp-sm) 0;
  padding-left: 0;
}

.ai-faq__steps {
  counter-reset: faq-step;
  list-style: none;
}

.ai-faq__steps li {
  position: relative;
  padding-left: 32px;
  margin-bottom: var(--ai-sp-xs);
  line-height: 1.8;
  counter-increment: faq-step;
}

.ai-faq__steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 99px;
  background: var(--ai-accent-light);
  color: var(--ai-accent);
  font-family: var(--ai-font-en);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.ai-faq__bullets {
  list-style: none;
}

.ai-faq__bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--ai-sp-xs);
  line-height: 1.8;
}

.ai-faq__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--ai-accent);
  border-radius: 99px;
}

@media (max-width: 767px) {
  .ai-faq__summary {
    padding: var(--ai-sp-md);
    gap: var(--ai-sp-sm);
    align-items: flex-start;
  }
  .ai-faq__q {
    font-size: 11px;
    padding: 3px 8px;
    margin-top: 3px;
  }
  .ai-faq__question { font-size: 14px; }
  .ai-faq__icon { margin-top: 4px; }
  .ai-faq__answer {
    padding: var(--ai-sp-md);
    padding-top: var(--ai-sp-md);
    font-size: 14px;
  }
}

@media (max-width: 1023px) {
  .ai-pricing__list { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .ai-pricing__card--featured { transform: none; }
  .ai-pricing__card--featured:hover { transform: translateY(-4px); }
}
@media (max-width: 767px) {
  .ai-pricing__price em { font-size: 40px; }
}

/* ========================================================
   CTA
   ======================================================== */
.ai-cta {
  background: var(--ai-bg-dark);
  color: #FFFFFF;
  padding: var(--ai-sp-2xl) 0;
}

.ai-cta__inner {
  text-align: center;
  max-width: 720px;
}

.ai-cta__label {
  color: rgba(255, 255, 255, 0.5);
}

.ai-cta__title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.3;
  color: #FFFFFF;
  margin-bottom: var(--ai-sp-md);
  letter-spacing: -0.01em;
}

.ai-cta__lead {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--ai-sp-xl);
}

.ai-cta__note {
  margin-top: var(--ai-sp-md);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 767px) {
  .ai-cta__title { font-size: 26px; }
  .ai-cta__lead { font-size: 14px; }
}

/* ========================================================
   Footer
   ======================================================== */
.ai-footer {
  background: var(--ai-bg-main);
  border-top: 1px solid var(--ai-border);
  padding: var(--ai-sp-xl) 0;
}

.ai-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ai-sp-md);
  text-align: center;
}

.ai-footer__logo {
  font-family: var(--ai-font-en);
  font-size: 16px;
  font-weight: 700;
  color: var(--ai-text-heading);
}

.ai-footer__nav {
  display: flex;
  gap: var(--ai-sp-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.ai-footer__link {
  font-size: 14px;
  color: var(--ai-text-sub);
  transition: color var(--ai-transition-fast);
}

.ai-footer__link:hover {
  color: var(--ai-accent);
}

.ai-footer__copyright {
  font-size: 12px;
  color: var(--ai-text-caption);
  font-family: var(--ai-font-en);
}

@media (max-width: 767px) {
  .ai-footer__nav { gap: var(--ai-sp-md); }
  .ai-footer__link { font-size: 13px; }
}

/* ========================================================
   Accessibility
   ======================================================== */
:focus-visible {
  outline: 2px solid var(--ai-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   Anchor target highlight
   （確認事項リンクからジャンプした要素を強調）
======================================== */
:target {
  scroll-margin-top: 96px;
}

.ai-faq__details:target,
#pricing-disclaimer:target,
#support-table:target,
#api-cost-reference:target {
  animation: ai-target-flash 1.6s ease-out 1;
}

@keyframes ai-target-flash {
  0% {
    box-shadow: 0 0 0 0 rgba(43, 76, 255, 0);
    background-color: rgba(43, 76, 255, 0);
  }
  30% {
    box-shadow: 0 0 0 6px rgba(43, 76, 255, 0.18);
    background-color: rgba(43, 76, 255, 0.06);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(43, 76, 255, 0);
    background-color: rgba(43, 76, 255, 0);
  }
}