/*
* Co-Seed Landing Page Stylesheet
* Theme: Modern, Tech-oriented with blue gradient
*/

/* Base & Typography */
:root {
  /* Color Palette */
  --primary-color: #1E5CC8; /* ブランド青 */
  --primary-light: #3D78E3; 
  --primary-dark: #0A3A96;
  --secondary-color: #0AD19F; /* アクセントグリーン */
  --text-color: #383838;
  --text-light: #666666;
  --text-dark: #191919;
  --bg-color: #FFFFFF;
  --bg-light: #F7F9FD;
  --bg-gray: #F1F4F8;
  --bg-dark: #0C1F3F;
  --border-color: #DCDFE4;
  
  /* Spacing */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 40px;
  --spacing-xl: 80px;
  
  /* Typography */
  --font-family-base: 'Noto Sans JP', sans-serif;
  --font-family-heading: 'Montserrat', var(--font-family-base);
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  
  /* Animation */
  --transition-speed: 0.3s;
  --transition-timing: ease-in-out;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-base);
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--bg-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  color: var(--text-dark);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-speed) var(--transition-timing);
}

a:hover {
  color: var(--primary-light);
}

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

section {
  padding: var(--spacing-xl) 0;
}

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

/* Buttons */
.button {
  display: inline-block;
  font-family: var(--font-family-heading);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  padding: 15px 30px;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-speed) var(--transition-timing);
  cursor: pointer;
  border: none;
  outline: none;
  box-shadow: 0 4px 10px rgba(30, 92, 200, 0.2);
}

.button--primary {
  background-color: var(--primary-color);
  color: white;
}

.button--primary:hover {
  background-color: var(--primary-light);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(30, 92, 200, 0.3);
}

.button--secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: none;
}

.button--secondary:hover {
  background-color: rgba(30, 92, 200, 0.1);
  color: var(--primary-color);
  transform: translateY(-2px);
}

/* Section Headings */
.section-heading {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.section-title::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 3px;
  background: var(--primary-color);
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ヘッダーの透過型白背景への変更 */
.header {
  background-color: rgba(255, 255, 255, 0.85); /* 透過型の白背景 */
  backdrop-filter: blur(8px); /* 背景のぼかし効果 */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); /* 軽い影を追加 */
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.95); /* スクロール時はより不透明に */
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header__logo {
  z-index: 1001;
}

.header__logo img {
  height: 40px;
}

.header__nav ul {
  display: flex;
  gap: var(--spacing-lg);
}

.header__nav li a {
  color: var(--text-dark);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.header.scrolled .header__nav li a {
  color: var(--text-dark);
}

.header__nav li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-speed) var(--transition-timing);
}

.header__nav li a:hover::after,
.header__nav li a:focus::after {
  width: 100%;
}

/* コンタクトボタンのスタイル調整 */
.header__nav .contact-button a {
  background-color: var(--primary-color);
  color: white;
}


.header__nav .contact-button a:hover {
  background-color: var(--primary-light);
}

.header__nav .contact-button a::after {
  display: none;
}

.header__hamburger {
  display: none;
  cursor: pointer;
  z-index: 1001;
}

.header__hamburger span {
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--text-dark);
  margin: 6px 0;
  transition: all var(--transition-speed) var(--transition-timing);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  overflow: hidden;
}

.hero__video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.hero__video-container video {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

/* トップの動画オーバーレイをエメラルドグリーンに変更 */
.hero__overlay {
  background: linear-gradient(45deg, 
    rgba(10, 150, 120, 0.5), /* エメラルドグリーンベース、透明度を下げる */
    rgba(14, 100, 90, 0.4)  /* より暗めのエメラルドグリーン、さらに透明度を下げる */
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--spacing-lg);
}

.hero__title {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  color: white;
}

.hero__subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
  color: rgba(255, 255, 255, 0.9);
}

.hero__cta {
  margin-top: var(--spacing-lg);
}

.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: white;
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0.7;
  animation: bounce 2s infinite;
}

.scroll-down::after {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  border-right: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Assessment Section */
.assessment {
  background-color: var(--bg-light);
}

.assessment__wrapper {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.assessment__description {
  flex: 1;
}

.assessment__form {
  flex: 1;
}

.assessment__form iframe {
  width: 100%;
  height: 600px;
  border-radius: var(--border-radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-list {
  margin-top: var(--spacing-lg);
}

.feature-list li {
  display: flex;
  margin-bottom: var(--spacing-lg);
  align-items: flex-start;
}

.feature-list .icon {
  flex-shrink: 0;
  margin-right: var(--spacing-md);
}

.feature-list .icon img {
  width: 50px;
  height: 50px;
}

.feature-list .text h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--primary-dark);
}

.feature-list .text p {
  color: var(--text-light);
}

/* About Section */
.about__concept {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.about__image {
  flex: 1;
}

.about__image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about__text {
  flex: 1;
}

.point {
  margin-top: var(--spacing-lg);
  background-color: var(--bg-gray);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--primary-color);
}

.point h3 {
  margin-bottom: var(--spacing-md);
  color: var(--primary-dark);
}

.point ul {
  list-style: disc;
  padding-left: var(--spacing-lg);
}

.point ul li {
  margin-bottom: var(--spacing-sm);
}

/* Services Section */
.services__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.service-card {
  flex: 1;
  min-width: 300px;
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-card__icon {
  margin-bottom: var(--spacing-md);
}

.service-card__icon img {
  width: 60px;
  height: 60px;
}

.service-card__content h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-md);
}

.service-card__content ul {
  list-style: none;
}

.service-card__content ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--spacing-sm);
}

.service-card__content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-color);
}

.services__comparison {
  background-color: var(--bg-gray);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
}

.services__comparison h3 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.table-wrapper {
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.comparison-table thead th {
  background-color: var(--primary-color);
  color: white;
}

.comparison-table thead th:first-child {
  border-top-left-radius: var(--border-radius-sm);
}

.comparison-table thead th:last-child {
  border-top-right-radius: var(--border-radius-sm);
}

.comparison-table tbody tr:hover {
  background-color: rgba(30, 92, 200, 0.05);
}

.services__cta {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* Case Studies Section */
.case__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.case-card {
  flex: 1;
  min-width: 350px;
  display: flex;
  background-color: white;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.case-card__company {
  padding: var(--spacing-lg);
  background-color: var(--primary-dark);
  color: white;
  width: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-card__company .industry {
  font-size: 0.8rem;
  margin-bottom: var(--spacing-sm);
  opacity: 0.7;
}

.case-card__company .name {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: var(--spacing-xs);
}

.case-card__company .position {
  font-size: 0.8rem;
}

.case-card__content {
  flex: 1;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
}

.case-card__content .quote {
  flex: 1;
  margin-bottom: var(--spacing-md);
}

.case-card__content .quote p::before {
  content: """;
  color: var(--primary-light);
  font-size: 2rem;
  line-height: 0;
  vertical-align: -0.4em;
  margin-right: 0.2em;
}

.case-card__content .quote p::after {
  content: """;
  color: var(--primary-light);
  font-size: 2rem;
  line-height: 0;
  vertical-align: -0.4em;
  margin-left: 0.2em;
}

.case-card__content .result {
  background-color: var(--bg-gray);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
}

.case-card__content .result h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--primary-dark);
}

.case-card__content .result ul {
  list-style: disc;
  padding-left: var(--spacing-md);
}

.case-card__content .result ul li {
  margin-bottom: var(--spacing-xs);
}

.case__cta {
  text-align: center;
}

/* ROI Section */
.roi {
  background-color: var(--bg-light);
}

.roi__container {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.roi__image {
  flex: 1;
  text-align: center;
}

.roi__image img {
  max-width: 450px;
}

.roi__text {
  flex: 1;
}

.roi__text h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-md);
}

.roi__calculator {
  margin-top: var(--spacing-lg);
}

.roi__item {
  margin-bottom: var(--spacing-lg);
}

.roi__item h4 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
}

.roi__item h4::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--primary-color);
  margin-right: var(--spacing-sm);
  border-radius: 50%;
}

.roi__item ul {
  list-style: none;
  padding-left: var(--spacing-lg);
}

.roi__item ul li {
  margin-bottom: var(--spacing-xs);
  position: relative;
}

.roi__item ul li::before {
  content: "•";
  color: var(--text-light);
  position: absolute;
  left: -15px;
}

.roi__item ul li strong {
  color: var(--primary-color);
}

.roi__summary {
  margin-top: var(--spacing-lg);
  background-color: var(--primary-dark);
  color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  text-align: center;
}

.roi__summary p {
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

.roi__summary .highlight {
  color: white;
  font-weight: bold;
  font-size: 1.5rem;
}

/* Concept Section */
.concept {
  position: relative;
  overflow: hidden;
}

.concept::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/circuit-pattern.svg');
  background-size: cover;
  opacity: 0.05;
  z-index: -1;
}

.concept__content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.concept__text {
  flex: 1;
}

.concept__image {
  flex: 1;
  text-align: center;
}

.concept__image img {
  max-width: 450px;
}

/* Founders Section */
.founders {
  background-color: var(--bg-light);
}

.founders__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.founder-card {
  flex: 1;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  background-color: white;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-speed) var(--transition-timing);
}

.founder-card:hover {
  transform: translateY(-5px);
}

.founder-card__image {
  height: 300px;
  overflow: hidden;
}

.founder-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed) var(--transition-timing);
}

.founder-card:hover .founder-card__image img {
  transform: scale(1.05);
}

.founder-card__content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.founder-card__content h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.founder-card__location {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.founder-card__description {
  color: var(--text-color);
  flex: 1;
}

/* FAQ Section */
.faq__list {
  margin-bottom: var(--spacing-xl);
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item__question {
  position: relative;
  padding: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item__question h3 {
  margin-bottom: 0;
  font-size: 1.2rem;
  padding-right: var(--spacing-lg);
}

.toggle-icon {
  position: relative;
  width: 16px;
  height: 16px;
}

.toggle-icon::before,
.toggle-icon::after {
  content: "";
  position: absolute;
  background-color: var(--primary-color);
  transition: transform var(--transition-speed) var(--transition-timing);
}

.toggle-icon::before {
  top: 8px;
  left: 0;
  width: 16px;
  height: 2px;
}

.toggle-icon::after {
  top: 1px;
  left: 7px;
  width: 2px;
  height: 16px;
}

.faq-item.active .toggle-icon::after {
  transform: rotate(90deg);
}

.faq-item__answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all var(--transition-speed) var(--transition-timing);
}

.faq-item.active .faq-item__answer {
  height: auto;
  opacity: 1;
}

.faq__cta {
  text-align: center;
}

.faq__cta p {
  margin-bottom: var(--spacing-md);
}

/* Contact Section */
.contact {
  background-color: var(--bg-light);
}

.contact__content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.contact__info {
  flex: 1;
  min-width: 300px;
}

.contact__method {
  margin-bottom: var(--spacing-lg);
}

.contact__method h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.contact__sns h3 {
  color: var(--primary-dark);
  margin-bottom: var(--spacing-md);
}

.contact__sns ul {
  display: flex;
  gap: var(--spacing-md);
}

.contact__sns ul li a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  border-radius: 50%;
  transition: all var(--transition-speed) var(--transition-timing);
}

.contact__sns ul li a:hover {
  background-color: var(--primary-light);
  transform: translateY(-3px);
}

.contact__sns ul li a img {
  width: 20px;
  height: 20px;
}

.contact__form {
  flex: 1;
  min-width: 300px;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family-base);
  font-size: 1rem;
  transition: border-color var(--transition-speed) var(--transition-timing);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-check {
  display: flex;
  align-items: center;
}

.form-check input {
  width: auto;
  margin-right: var(--spacing-sm);
}

.form-check label {
  margin-bottom: 0;
}

.form-submit {
  margin-top: var(--spacing-lg);
}

.required {
  color: #e74c3c;
}

/* CTA Section */
.cta {
  position: relative;
  text-align: center;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  z-index: -1;
}

.cta__content {
  color: white;
  max-width: 800px;
  margin: 0 auto;
}

.cta__content h2 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.cta__content p {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.cta__buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cta .button--primary {
  background-color: white;
  color: var(--primary-color);
}

.cta .button--primary:hover {
  background-color: #f0f0f0;
  color: var(--primary-dark);
}

.cta .button--secondary {
  background-color: transparent;
  color: white;
  border: 2px solid white;
}

.cta .button--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

/* Footer */
.footer {
  background-color: var(--bg-dark);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer__content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__info {
  flex: 1;
  min-width: 300px;
}

.footer__logo {
  margin-bottom: var(--spacing-lg);
}

.footer__logo img {
  height: 40px;
}

.footer__info p {
  opacity: 0.7;
  margin-bottom: var(--spacing-md);
}

.footer__nav {
  flex: 2;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.footer__links {
  flex: 1;
  min-width: 150px;
}

.footer__links h3 {
  color: white;
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
}

.footer__links ul li {
  margin-bottom: var(--spacing-sm);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-speed) var(--transition-timing);
}

.footer__links a:hover {
  color: white;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__bottom p {
  opacity: 0.5;
  font-size: 0.9rem;
  margin-bottom: 0;
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social a {
  opacity: 0.5;
  transition: opacity var(--transition-speed) var(--transition-timing);
}

.footer__social a:hover {
  opacity: 1;
}

.footer__social img {
  width: 20px;
  height: 20px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  :root {
    --spacing-xl: 60px;
  }
  
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero__title {
    font-size: 3.5rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .assessment__wrapper,
  .about__concept,
  .roi__container,
  .concept__content {
    flex-direction: column;
  }
  
  .concept__image {
    order: -1;
  }
  
  .case-card {
    flex-direction: column;
  }
  
  .case-card__company {
    width: 100%;
    padding: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 30px;
    --spacing-xl: 50px;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .hero__title {
    font-size: 2.8rem;
  }
  
  .hero__subtitle {
    font-size: 1.2rem;
  }
  
  .header__nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: white;
    padding-top: 100px;
    z-index: 1000;
  }
  
  .header__nav.active {
    display: block;
  }
  
  .header__nav ul {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
  }
  
  .header__hamburger {
    display: block;
  }
  
  .header.active .header__hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }
  
  .header.active .header__hamburger span:nth-child(2) {
    opacity: 0;
  }
  
  .header.active .header__hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }
  
  .cta__buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .button {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-md: 15px;
    --spacing-lg: 25px;
    --spacing-xl: 40px;
  }
  
  section {
    padding: var(--spacing-lg) 0;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .hero__title {
    font-size: 2.2rem;
  }
  
  .hero__subtitle {
    font-size: 1rem;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}
/* ヒーロービデオ関連の拡張スタイル */
.hero__video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(45deg, rgba(10, 58, 150, 0.9), rgba(14, 31, 77, 0.7));
  /* 動画が読み込めない場合の背景 */
  background-image: url('../images/hero-fallback.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__video-container video {
  position: relative;
  z-index: 1;
  object-fit: cover;
  width: 100%;
  height: 100%;
  /* videoタグがエラーになった場合は非表示に */
  min-height: 1px;
}

/* エラー時に表示される代替画像 */
.hero__video-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* ビデオオーバーレイもz-indexを調整 */
.hero__overlay {
  z-index: 2;
}

/* ヒーローコンテンツはオーバーレイより前面に */
.hero__content {
  position: relative;
  z-index: 3;
}
/* 診断フォームセクション調整用CSS */
.assessment__wrapper {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.assessment__description {
  flex: 1;
}

.assessment__cta {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background-color: var(--bg-gray);
  border-radius: var(--border-radius-lg);
  text-align: center;
  min-height: 300px;
}

.assessment__cta .button {
  margin-bottom: var(--spacing-md);
}

.assessment__note {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: var(--spacing-md);
}

/* レスポンシブ調整 */
@media (max-width: 1024px) {
  .assessment__wrapper {
    flex-direction: column;
  }
  
  .assessment__cta {
    width: 100%;
  }
}