/* ========================================
   AI HANDS-ON TRAINING LP - Styles
   セリフ体 + 黒ベース + オレンジアクセント
   信頼感のある洗練されたデザイン
======================================== */

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* カラーパレット - 黒ベース + オレンジアクセント */
  --color-primary: #1A1A1A;
  --color-primary-light: #333333;
  --color-accent: #D35400;
  --color-accent-light: #E67E22;
  --color-accent-subtle: #FDF2E9;
  --color-dark: #0D0D0D;
  --color-text: #1A1A1A;
  --color-text-secondary: #555555;
  --color-gray: #888888;
  --color-border: #E0E0E0;
  --color-light: #F8F8F8;
  --color-white: #FFFFFF;

  /* フォント */
  --font-serif: 'Noto Serif JP', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

  /* トランジション */
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
}

body {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

/* ========================================
   Navigation
======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 48px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.nav-cta {
  padding: 12px 28px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-white);
  background: var(--color-primary);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
}

.nav-cta:hover {
  background: var(--color-accent);
}

/* ========================================
   Progress Bar
======================================== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  z-index: 1001;
}

.progress-fill {
  height: 100%;
  background: var(--color-accent);
  width: 0%;
  transition: width 0.1s ease-out;
}

/* ========================================
   Section Indicator
======================================== */
.section-indicator {
  position: fixed;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.section-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--color-gray);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: var(--transition-base);
}

.section-dot.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.2);
}

.section-dot:hover {
  border-color: var(--color-accent);
}

/* ========================================
   Slides Container & Base
======================================== */
.slides-container {
  width: 100%;
}

.slide {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding: 120px 60px;
  position: relative;
}

.slide-content {
  max-width: 880px;
  width: 100%;
  text-align: center;
}

/* ========================================
   Typography
======================================== */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 4.5vw, 42px);
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 48px;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.highlight {
  color: var(--color-accent);
}

/* ========================================
   Hero Section
======================================== */
.slide-hero {
  background: var(--color-white);
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(14px, 1.8vw, 17px);
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 2;
  letter-spacing: 0.03em;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.hero-price {
  color: var(--color-accent);
  font-weight: 700;
}

.hero-time {
  color: var(--color-text);
}

.hero-name {
  font-family: var(--font-sans);
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
}

.hero-cta {
  margin-bottom: 80px;
}

/* ========================================
   Buttons
======================================== */
.btn-primary {
  display: inline-block;
  padding: 20px 56px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-white);
  background: var(--color-primary);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
}

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

.btn-large {
  padding: 24px 72px;
  font-size: 16px;
}

/* ========================================
   Scroll Indicator
======================================== */
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-gray);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 1px;
  height: 40px;
  background: var(--color-gray);
  position: relative;
  animation: scrollLine 2s infinite;
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -4px;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--color-gray);
  border-bottom: 1px solid var(--color-gray);
  transform: rotate(45deg);
}

@keyframes scrollLine {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}

/* ========================================
   Problem Section
======================================== */
.slide-problem {
  background: var(--color-white);
}

.problem-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 680px;
  margin: 0 auto;
}

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  text-align: left;
  padding: 32px 36px;
  background: var(--color-light);
  border-left: 3px solid var(--color-border);
  transition: var(--transition-base);
}

.problem-item:hover {
  border-left-color: var(--color-accent);
}

.problem-icon {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
}

.problem-item p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
}

.problem-item strong {
  color: var(--color-accent);
  font-weight: 600;
}

/* ========================================
   Reality Section
======================================== */
.slide-reality {
  background: var(--color-dark);
  color: var(--color-white);
}

.reality-box {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 56px 48px;
  margin-bottom: 48px;
}

.reality-text {
  font-size: clamp(17px, 2.5vw, 22px);
  line-height: 2.2;
  font-weight: 400;
}

.reality-highlight {
  color: var(--color-accent-light);
  font-weight: 600;
}

.reality-quote {
  font-size: clamp(15px, 2vw, 18px);
  line-height: 2.2;
  color: rgba(255, 255, 255, 0.75);
}

.reality-quote strong {
  color: var(--color-white);
}

/* ========================================
   Solution Section
======================================== */
.slide-solution {
  background: var(--color-primary);
  color: var(--color-white);
}

.solution-sub {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 24px;
}

.slide-solution .section-title {
  color: var(--color-white);
}

.slide-solution .highlight {
  color: var(--color-accent-light);
}

.solution-desc {
  font-size: 17px;
  line-height: 2.2;
  margin-bottom: 56px;
  opacity: 0.85;
}

.solution-name {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.solution-badge {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.3em;
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 10px 24px;
}

.solution-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.5vw, 32px);
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* ========================================
   Steps Intro
======================================== */
.slide-steps-intro {
  background: var(--color-light);
}

.steps-intro-text {
  font-size: 18px;
  margin-bottom: 56px;
  color: var(--color-text-secondary);
}

.steps-overview {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.step-mini {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  min-width: 140px;
  transition: var(--transition-base);
}

.step-mini:hover {
  border-color: var(--color-accent);
}

.step-mini-number {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 300;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.step-mini span {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

/* ========================================
   Individual Step Sections
======================================== */
.slide-step {
  background: var(--color-white);
}

.step-number {
  font-family: var(--font-sans);
  font-size: clamp(48px, 12vw, 100px);
  font-weight: 200;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: 24px;
  letter-spacing: -0.05em;
}

.step-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.5vw, 32px);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.step-timing {
  display: inline-block;
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.1em;
  background: var(--color-primary);
  color: var(--color-white);
  margin-bottom: 36px;
}

.step-desc {
  font-size: 16px;
  line-height: 2.1;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.step-highlight {
  color: var(--color-accent);
  font-weight: 600;
}

.slide-step-main {
  background: var(--color-accent-subtle);
}

.slide-step-main .step-number {
  color: rgba(211, 84, 0, 0.15);
}

.slide-step-main .step-timing {
  background: var(--color-accent);
}

/* ========================================
   After Section
======================================== */
.slide-after {
  background: var(--color-light);
}

.after-sub {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-gray);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.after-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 680px;
  margin: 0 auto;
  text-align: left;
}

.after-item {
  background: var(--color-white);
  padding: 36px 40px;
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.after-item:hover {
  border-color: var(--color-accent);
}

.after-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 16px;
}

.after-item h4 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.after-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.9;
}

/* ========================================
   Pricing Section
======================================== */
.slide-pricing {
  background: var(--color-white);
}

.pricing-card {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 56px 48px;
  max-width: 480px;
  margin: 0 auto 48px;
}

.pricing-label {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.2em;
  opacity: 0.6;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 36px;
}

.pricing-yen {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 300;
  opacity: 0.7;
}

.pricing-number {
  font-family: var(--font-sans);
  font-size: clamp(36px, 9vw, 56px);
  font-weight: 300;
  letter-spacing: -0.02em;
}

.pricing-unit {
  font-family: var(--font-sans);
  font-size: 14px;
  opacity: 0.6;
  margin-left: 4px;
}

.pricing-includes {
  list-style: none;
  text-align: left;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 32px;
}

.pricing-includes li {
  padding: 14px 0;
  padding-left: 28px;
  position: relative;
  font-size: 14px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pricing-includes li:last-child {
  border-bottom: none;
}

.pricing-includes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--color-accent-light);
}

.pricing-note {
  font-size: 15px;
  line-height: 2.1;
  color: var(--color-text-secondary);
}

/* ========================================
   FAQ Section
======================================== */
.slide-faq {
  background: var(--color-light);
}

.faq-list {
  max-width: 680px;
  margin: 0 auto;
  text-align: left;
}

.faq-item {
  background: var(--color-white);
  padding: 36px 40px;
  border: 1px solid var(--color-border);
  margin-bottom: 16px;
}

.faq-q {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
  padding-left: 36px;
  position: relative;
  letter-spacing: 0.02em;
}

.faq-q::before {
  content: "Q";
  position: absolute;
  left: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.faq-a {
  font-size: 14px;
  line-height: 2;
  color: var(--color-text-secondary);
  padding-left: 36px;
}

/* ========================================
   CTA Section
======================================== */
.slide-cta {
  background: var(--color-dark);
  color: var(--color-white);
  min-height: auto;
  padding: 100px 60px;
}

.slide-cta .slide-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 600px;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.cta-desc {
  font-size: 14px;
  line-height: 1.9;
  opacity: 0.7;
  margin-bottom: 40px;
}

/* お問い合わせフォーム */
.contact-form {
  width: 100%;
  margin-bottom: 48px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.8);
}

.form-group .required {
  color: var(--color-accent-light);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  outline: none;
  transition: var(--transition-base);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent-light);
  background: rgba(255, 255, 255, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.btn-submit {
  width: 100%;
  padding: 18px 32px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-white);
  background: var(--color-accent);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  margin-top: 8px;
}

.btn-submit:hover {
  background: var(--color-accent-light);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  margin-top: 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  text-align: center;
  min-height: 20px;
}

.form-status.success {
  color: #4CAF50;
}

.form-status.error {
  color: #FF6B6B;
}

/* 教育関係者向け */
.cta-notice {
  padding: 32px 36px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  width: 100%;
}

.notice-title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  color: var(--color-accent-light);
  text-transform: uppercase;
}

.notice-text {
  font-size: 13px;
  line-height: 1.8;
  opacity: 0.6;
  margin-bottom: 20px;
}

.btn-education {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: var(--transition-base);
}

.btn-education:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
}

/* ========================================
   Company Slide（会社概要スライド）
======================================== */
.slide-company {
  background: var(--color-dark);
  color: var(--color-white);
  flex-direction: column;
}

.company-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-accent-light);
  margin-bottom: 16px;
}

.company-heading {
  font-family: var(--font-serif);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-white);
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.company-table {
  width: 100%;
  max-width: 560px;
  margin: 0 auto 40px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.8;
}

.company-table th,
.company-table td {
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 36%;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.45);
  white-space: nowrap;
}

.company-table td {
  color: rgba(255, 255, 255, 0.85);
}

.company-table a {
  color: var(--color-accent-light);
  text-decoration: none;
}

.company-table a:hover {
  text-decoration: underline;
}

.company-footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.company-footer-links a {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color var(--transition-base);
}

.company-footer-links a:hover {
  color: var(--color-accent-light);
}

.company-footer-links span {
  color: rgba(255, 255, 255, 0.2);
  font-size: 10px;
}

.company-copyright {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.22);
}

/* ========================================
   Legal Sections（PP・利用規約 別ページ用）
======================================== */
.legal-container {
  border-top: 1px solid var(--color-border);
}

.legal-section {
  padding: 80px 60px;
  background: var(--color-white);
}

.legal-section--light {
  background: var(--color-light);
}

.legal-content {
  max-width: 760px;
  margin: 0 auto;
}

.legal-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.legal-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.5vw, 30px);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

/* 会社概要テーブル */
.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 2;
}

.legal-table th,
.legal-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.legal-table th {
  width: 32%;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.legal-table td {
  color: var(--color-text);
}

/* 法的テキスト共通 */
.legal-text {
  font-size: 14px;
  line-height: 2.1;
  color: var(--color-text-secondary);
}

.legal-text h3 {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 40px;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.legal-text h3:first-child {
  margin-top: 0;
}

.legal-text p {
  margin-bottom: 12px;
}

.legal-text ul, .legal-text ol {
  padding-left: 24px;
  margin-bottom: 12px;
}

.legal-text li {
  margin-bottom: 6px;
}

.legal-text a {
  color: var(--color-accent);
  text-decoration: none;
}

.legal-text a:hover {
  text-decoration: underline;
}

.legal-updated {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-gray);
  margin-bottom: 40px;
  letter-spacing: 0.05em;
}

/* ========================================
   Footer
======================================== */
.footer {
  padding: 32px 48px;
  background: #000;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 16px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-accent-light);
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 768px) {
  /* Navigation */
  .nav {
    padding: 16px 24px;
  }

  .nav-logo-img {
    height: 36px;
  }

  .nav-cta {
    padding: 10px 20px;
    font-size: 12px;
  }

  /* Section Indicator */
  .section-indicator {
    display: none;
  }

  /* Slides */
  .slide {
    padding: 100px 24px;
  }

  /* Hero */
  .hero-sub br {
    display: none;
  }

  .scroll-indicator {
    display: none;
  }

  /* Problem */
  .problem-item {
    flex-direction: column;
    text-align: center;
    padding: 28px 24px;
    gap: 16px;
  }

  .problem-icon {
    margin: 0 auto;
  }

  /* Reality */
  .reality-box {
    padding: 36px 24px;
  }

  .reality-text br,
  .reality-quote br {
    display: none;
  }

  /* Solution */
  .solution-desc br {
    display: none;
  }

  /* Steps Overview */
  .steps-overview {
    gap: 16px;
  }

  .step-mini {
    min-width: 130px;
    padding: 24px 20px;
  }

  /* Step Details */
  .step-number {
    font-size: 64px;
  }

  .step-desc br {
    display: none;
  }

  /* After */
  .after-item {
    padding: 28px 24px;
  }

  /* Pricing */
  .pricing-card {
    padding: 40px 28px;
  }

  .pricing-note br {
    display: none;
  }

  /* FAQ */
  .faq-item {
    padding: 28px 24px;
  }

  .faq-q {
    padding-left: 28px;
  }

  .faq-a {
    padding-left: 28px;
  }

  /* CTA - スマホ最適化 */
  .slide-cta {
    padding: 60px 20px;
    min-height: auto;
  }

  .slide-cta .slide-content {
    padding: 0;
  }

  .cta-title {
    font-size: 22px;
    line-height: 1.5;
    margin-bottom: 16px;
  }

  .cta-title br {
    display: none;
  }

  .cta-desc {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 28px;
  }

  .cta-desc br {
    display: none;
  }

  /* フォーム - スマホ */
  .contact-form {
    margin-bottom: 36px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-group {
    margin-bottom: 16px;
  }

  .form-group label {
    font-size: 11px;
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group textarea {
    padding: 12px 14px;
    font-size: 16px; /* iOSのズーム防止 */
  }

  .form-group textarea {
    min-height: 80px;
  }

  .btn-submit {
    padding: 16px 24px;
    font-size: 14px;
  }

  .cta-notice {
    padding: 24px 20px;
  }

  .notice-title {
    font-size: 10px;
    margin-bottom: 10px;
  }

  .notice-text {
    font-size: 12px;
    line-height: 1.7;
    margin-bottom: 16px;
  }

  .btn-education {
    padding: 12px 24px;
    font-size: 12px;
    width: 100%;
    text-align: center;
  }

  /* Footer */
  .footer {
    padding: 24px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
  }

  /* Legal（別ページ用） */
  .legal-section {
    padding: 60px 24px;
  }

  .legal-table th {
    width: 36%;
  }

  .legal-table th,
  .legal-table td {
    padding: 14px 12px;
    font-size: 13px;
  }

  /* Company Slide（スマホ） */
  .company-heading {
    font-size: 20px;
    margin-bottom: 24px;
    padding-bottom: 16px;
  }

  .company-table {
    font-size: 13px;
    margin-bottom: 28px;
  }

  .company-table th,
  .company-table td {
    padding: 11px 8px;
  }

  .company-table th {
    font-size: 11px;
    width: 38%;
  }

  .company-footer-links {
    gap: 16px;
  }
}

/* Small mobile */
@media (max-width: 380px) {
  .hero-title {
    font-size: 24px;
  }

  .section-title {
    font-size: 22px;
  }

  .step-mini {
    min-width: 110px;
    padding: 20px 16px;
  }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  .section-indicator {
    right: 24px;
  }

  .slide {
    padding: 100px 40px;
  }

  /* Company Slide（タブレット） */
  .company-table {
    max-width: 480px;
  }

  .company-table th,
  .company-table td {
    padding: 13px 16px;
  }
}

/* ========================================
   Animations
======================================== */
@media (prefers-reduced-motion: no-preference) {
  .slide-content {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeInUp 0.7s ease forwards;
  }

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