/* ==========================================================================
   Y-Loop (一般社団法人 横浜アグリ・サーキュラー・ループ 設立準備室) メインスタイルシート
   ========================================================================== */

:root {
    --primary-color: #1e3f20;     /* みどりを象徴する深いフォレストグリーン */
    --primary-dark: #122814;
    --primary-light: #2d5a30;
    --accent-color: #e67e22;      /* 食・大地を象徴するアースオレンジ */
    --accent-hover: #d35400;
    --accent-soft: #fcf5eb;
    --text-dark: #2c3e50;
    --text-muted: #596a7a;
    --text-light: #7f8c8d;
    --bg-light: #f8faf8;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 16px 40px rgba(30, 63, 32, 0.12);
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 汎用ボタン */
.btn {
    display: inline-block;
    padding: 0.85rem 2.2rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 63, 32, 0.25);
}

.btn-secondary {
    background-color: var(--accent-color);
    color: var(--bg-white);
}

.btn-secondary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 126, 34, 0.3);
}

.btn-primary-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-primary-outline:hover {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.btn-block {
    display: block;
    width: 100%;
}

/* 見出し共通 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 700;
    letter-spacing: 0.18em;
    font-size: 0.85rem;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.2rem;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    padding-bottom: 1.2rem;
    letter-spacing: -0.01em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

.paragraph {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.text-bold {
    font-weight: 700;
    color: var(--text-dark);
}

.text-sm {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ==========================================================================
   ヘッダー & ナビゲーション
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.96);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.9rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-title-group {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.05em;
    line-height: 1.1;
}

.logo-subtext {
    font-size: 0.68rem;
    color: var(--text-light);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 1.8rem;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-dark);
}

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

/* モバイルメニュートグル */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1100;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.menu-toggle.active .bar:nth-child(1) {
    transform: translateY(9.5px) rotate(45deg);
}

.menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-9.5px) rotate(-45deg);
}

/* ==========================================================================
   ヒーローセクション
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e3f20 0%, #102412 100%);
    color: var(--bg-white);
    padding: 8rem 2rem 4rem;
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(230, 126, 34, 0.08) 0%, rgba(0, 0, 0, 0.45) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    animation: fadeInUp 0.9s ease-out;
}

.hero-tagline {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--accent-color);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: block;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

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

.hero-title .hero-subtitle {
    font-size: 0.8em;
    display: inline-block;
    margin-top: 0.3rem;
}

.hero-lead {
    font-size: 1.15rem;
    font-weight: 300;
    margin-bottom: 2.5rem;
    color: #e2e8f0;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.75rem;
    color: #cbd5e0;
    letter-spacing: 0.1em;
}

.scroll-mouse {
    width: 20px;
    height: 34px;
    border: 2px solid #cbd5e0;
    border-radius: 12px;
    position: relative;
    margin-bottom: 0.4rem;
}

.scroll-mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 2px;
    animation: scrollAnim 1.6s infinite;
}

/* ==========================================================================
   ミッションセクション
   ========================================================================== */
.mission {
    padding: 7rem 0;
    background-color: var(--bg-white);
}

.mission-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.highlighted-text {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 500;
    border-left: 4px solid var(--accent-color);
    padding-left: 1.5rem;
    line-height: 1.7;
}

.mission-stat-box {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.stat-card {
    background-color: var(--bg-light);
    border-top: 4px solid var(--primary-color);
    padding: 2.2rem;
    border-radius: 6px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--hover-shadow);
}

.stat-num {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    line-height: 1;
    margin-bottom: 0.4rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ==========================================================================
   コア事業セクション
   ========================================================================== */
.projects {
    padding: 7rem 0;
    background-color: var(--bg-light);
}

.project-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

.project-card {
    background-color: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--hover-shadow);
}

.card-image-placeholder {
    height: 220px;
    position: relative;
}

.prj-1 {
    background: linear-gradient(135deg, #1e3f20 0%, #3a753d 100%);
}

.prj-1::before {
    content: "Forest / Green Cycle";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.prj-2 {
    background: linear-gradient(135deg, #d35400 0%, #f39c12 100%);
}

.prj-2::before {
    content: "Agriculture / Organic Cycle";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.card-body {
    padding: 2.2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 0.25rem 0.9rem;
    border-radius: 50px;
    background-color: rgba(230, 126, 34, 0.12);
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.project-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.card-detail-link {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* ==========================================================================
   テクノロジーセクション
   ========================================================================== */
.technology {
    padding: 7rem 0;
    background-color: var(--bg-white);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.tech-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #f8faf8 0%, #edf2ed 100%);
    height: 400px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.tech-network-animation {
    position: relative;
    width: 320px;
    height: 320px;
}

.node {
    position: absolute;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    color: white;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.12);
    z-index: 2;
    cursor: default;
}

.central-node {
    width: 96px;
    height: 96px;
    background-color: var(--primary-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.15rem;
    border: 3px solid #ffffff;
}

.leaf-node {
    width: 72px;
    height: 72px;
    font-size: 0.85rem;
    border: 2px solid #ffffff;
}

.node-green {
    background-color: #27ae60;
    top: 8%;
    left: 50%;
    transform: translateX(-50%);
}

.node-orange {
    background-color: #e67e22;
    bottom: 8%;
    left: 50%;
    transform: translateX(-50%);
}

.node-blue {
    background-color: #2980b9;
    top: 50%;
    left: 8%;
    transform: translateY(-50%);
}

.node-purple {
    background-color: #8e44ad;
    top: 50%;
    right: 8%;
    transform: translateY(-50%);
}

.connection {
    position: absolute;
    background-color: #cbd5e0;
    z-index: 1;
}

.line-1 {
    width: 2px;
    height: 70px;
    top: 25%;
    left: 50%;
    transform: translateX(-50%);
}

.line-2 {
    width: 2px;
    height: 70px;
    bottom: 25%;
    left: 50%;
    transform: translateX(-50%);
}

.line-3 {
    height: 2px;
    width: 70px;
    top: 50%;
    left: 23%;
    transform: translateY(-50%);
}

.line-4 {
    height: 2px;
    width: 70px;
    top: 50%;
    right: 23%;
    transform: translateY(-50%);
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
    margin-top: 2.2rem;
}

.tech-feat-item {
    display: flex;
    gap: 1.4rem;
}

.feat-icon {
    font-size: 1.8rem;
    color: var(--accent-color);
    line-height: 1;
}

.tech-feat-item h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.3rem;
}

.tech-feat-item p {
    font-size: 0.92rem;
    color: var(--text-muted);
}

/* ==========================================================================
   プロフィール & 団体概要セクション
   ========================================================================== */
.profile-section {
    padding: 7rem 0;
    background-color: var(--bg-light);
}

.profile-wrapper {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: stretch;
}

/* 代表プロフィールカード */
.profile-card {
    background-color: var(--bg-white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    position: relative;
    display: flex;
    flex-direction: column;
}

.profile-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background-color: rgba(30, 63, 32, 0.08);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
}

.profile-header-info {
    display: flex;
    align-items: center;
    gap: 1.8rem;
    margin-bottom: 1.8rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.profile-avatar-wrapper {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid #ffffff;
    box-shadow: 0 6px 20px rgba(30, 63, 32, 0.16);
    background-color: var(--bg-light);
}

.profile-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.profile-title-group {
    flex: 1;
}

.profile-role {
    font-size: 0.95rem;
    color: var(--accent-color);
    font-weight: 700;
    display: block;
    margin-bottom: 0.4rem;
    letter-spacing: 0.03em;
}

.profile-name {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.profile-name-en {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 400;
    letter-spacing: 0.12em;
    margin-left: 0.6rem;
}

.profile-bio {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.9;
    margin-bottom: 2rem;
    flex: 1;
}

.profile-bio p {
    margin-bottom: 1rem;
}

/* 資格ブロック */
.qualifications-block {
    background-color: var(--bg-light);
    border-radius: 8px;
    padding: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.qualifications-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.qualifications-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.qualification-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
}

.cert-icon {
    font-size: 1.3rem;
    line-height: 1.2;
}

.cert-info {
    display: flex;
    flex-direction: column;
}

.cert-name {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-dark);
}

.cert-org {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* 団体概要カード */
.org-card {
    background-color: var(--bg-white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.org-header-info {
    display: flex;
    align-items: center;
    gap: 1.8rem;
    margin-bottom: 1.8rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.org-avatar-wrapper {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid #ffffff;
    box-shadow: 0 6px 20px rgba(30, 63, 32, 0.16);
    background-color: #ffffff;
}

.org-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.org-title-group {
    flex: 1;
}

.org-subtitle {
    font-size: 0.95rem;
    color: var(--accent-color);
    font-weight: 700;
    display: block;
    margin-bottom: 0.4rem;
    letter-spacing: 0.03em;
}

.org-title {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0;
}

.org-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.org-row {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 1rem;
    padding-bottom: 1.1rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.92rem;
}

.org-row dt {
    color: var(--text-light);
    font-weight: 500;
}

.org-row dd {
    color: var(--text-dark);
    line-height: 1.7;
}

.link-highlight {
    color: var(--accent-color);
    font-weight: 700;
    text-decoration: underline;
}

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

.org-vision-box {
    background: linear-gradient(135deg, rgba(30, 63, 32, 0.05) 0%, rgba(230, 126, 34, 0.08) 100%);
    padding: 1.6rem;
    border-radius: 8px;
    border: 1px dashed rgba(30, 63, 32, 0.2);
}

.org-vision-lead {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.org-vision-text {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ==========================================================================
   お問い合わせセクション
   ========================================================================== */
.cta-section {
    padding: 7rem 0;
    background: linear-gradient(135deg, #1e3f20 0%, #102412 100%);
    color: var(--bg-white);
}

.cta-box {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}

.cta-box h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.cta-box p {
    font-size: 1.05rem;
    color: #e2e8f0;
    margin-bottom: 2rem;
}

/* ダイレクト連絡バー */
.direct-contact-bar {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.8rem 1.6rem;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 2.5rem;
    backdrop-filter: blur(5px);
}

.contact-bar-label {
    font-size: 0.9rem;
    color: #cbd5e0;
}

.contact-mail-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--bg-white);
    font-weight: 700;
    font-size: 1.05rem;
    border-bottom: 1px dotted rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.contact-mail-link:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.contact-form {
    background-color: rgba(255, 255, 255, 0.06);
    padding: 3rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-row:has(.form-textarea) {
    grid-template-columns: 1fr;
}

.form-input {
    width: 100%;
    padding: 1rem 1.2rem;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--bg-white);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.2);
}

.form-input::placeholder {
    color: #cbd5e0;
}

.form-textarea {
    min-height: 130px;
    resize: vertical;
}

.form-feedback {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    font-size: 0.95rem;
}

.form-feedback.success {
    background-color: rgba(39, 174, 96, 0.2);
    border: 1px solid #27ae60;
    color: #e8f8f0;
}

.form-feedback.error {
    background-color: rgba(231, 76, 60, 0.2);
    border: 1px solid #e74c3c;
    color: #ffebee;
}

/* ==========================================================================
   フッター
   ========================================================================== */
.footer {
    background-color: #0d1a0f;
    color: #a0aec0;
    padding: 5rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    max-width: 460px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
}

.footer-logo .logo-text {
    color: var(--bg-white);
}

.footer-corporate-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 0.5rem;
}

.footer-desc {
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    color: #94a3b8;
}

.footer-mail a {
    color: var(--accent-color);
    font-weight: 500;
}

.footer-links h4 {
    color: var(--bg-white);
    font-size: 1.05rem;
    margin-bottom: 1.4rem;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: center;
    font-size: 0.85rem;
    color: #64748b;
}

/* ==========================================================================
   404 エラーページ専用スタイル
   ========================================================================== */
.error-page-body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-light);
}

.error-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 0 5rem;
}

.error-card {
    background-color: var(--bg-white);
    max-width: 600px;
    margin: 0 auto;
    padding: 4rem 3rem;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    text-align: center;
    border: 1px solid var(--border-color);
}

.error-code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1;
    display: block;
    margin-bottom: 1rem;
    letter-spacing: -0.05em;
}

.error-title {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.error-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

/* ==========================================================================
   アニメーション & レスポンシブ
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollAnim {
    0% {
        top: 6px;
        opacity: 1;
    }
    50% {
        top: 18px;
        opacity: 0.3;
    }
    100% {
        top: 6px;
        opacity: 1;
    }
}

@media (max-width: 991px) {
    .mission-grid,
    .tech-grid,
    .profile-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .project-cards {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.4rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0.8rem 1.2rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-white);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        padding: 2rem;
        display: none;
    }

    .nav-menu.active {
        display: block;
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 1.4rem;
        align-items: flex-start;
    }

    .nav-menu .btn {
        width: 100%;
    }

    .hero {
        padding: 9rem 1.5rem 4rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 2.5rem;
    }

    .profile-card,
    .org-card {
        padding: 2rem 1.5rem;
    }

    .profile-header-info,
    .org-header-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.2rem;
    }

    .org-row {
        grid-template-columns: 80px 1fr;
    }
}