/* 全体のリセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c75b8;
    --primary-dark: #1a5a9e;
    --primary-light: #5a9ad7;
    --secondary-color: #e6f2ff;
    --accent-color: #0f4c81;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f9f9f9;
    --white: #fff;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

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

/* ヘッダースタイル */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
}

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

.logo-img {
    height: 50px;
    width: auto;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

nav ul li a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    left: 0;
    bottom: 0;
    transition: width 0.3s ease;
}

nav ul li a:hover:after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin-bottom: 5px;
    border-radius: 2px;
    transition: var(--transition);
}

/* トップセクション（ヒーロー）のスタイル */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    padding: 200px 0 150px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon fill="rgba(255,255,255,0.05)" points="0,100 100,0 100,100"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.main-copy {
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInDown 0.6s ease forwards;
}

.sub-copy {
    font-size: 1.6rem;
    font-weight: 300;
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeIn 0.6s ease forwards 0.3s;
    line-height: 1.8;
}

.greeting-text {
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    animation: fadeIn 0.6s ease forwards 0.6s;
}

.greeting-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* ビジョン・ミッションセクションのスタイル */
.vision-mission {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.vision-mission-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 100px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.vision, .mission {
    text-align: center;
    padding: 60px 40px;
    position: relative;
}

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

.mission {
    background-color: var(--white);
    color: var(--text-color);
}

.vision .section-title, .mission .section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
}

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

.mission .section-title {
    color: var(--primary-color);
}

.vision .section-title:after, .mission .section-title:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    left: 50%;
    transform: translateX(-50%);
    bottom: -20px;
}

.vision .section-title:after {
    background: var(--white);
}

.mission .section-title:after {
    background: var(--primary-color);
}

.vision-text, .mission-text {
    max-width: 800px;
    margin: 0 auto;
}

.vision-statement {
    font-size: 2.4rem;
    font-weight: 300;
    line-height: 2;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.vision-statement:last-child {
    margin-bottom: 0;
}

.mission-text p {
    font-size: 2rem;
    font-weight: 300;
    line-height: 2;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.mission-text p:last-child {
    margin-bottom: 0;
}

/* アニメーションの遅延設定 */
.vision-statement:nth-child(2) { animation-delay: 0.2s; }
.vision-statement:nth-child(3) { animation-delay: 0.4s; }

.mission-text p:nth-child(2) { animation-delay: 0.2s; }
.mission-text p:nth-child(3) { animation-delay: 0.4s; }
.mission-text p:nth-child(4) { animation-delay: 0.6s; }
.mission-text p:nth-child(5) { animation-delay: 0.8s; }

@media screen and (max-width: 992px) {
    .vision-mission {
        padding: 80px 0;
    }

    .vision-mission-content {
        gap: 60px;
    }

    .vision, .mission {
        padding: 40px 20px;
    }

    .vision .section-title, .mission .section-title {
        font-size: 2.4rem;
    }

    .vision-statement {
        font-size: 2rem;
    }

    .mission-text p {
        font-size: 1.6rem;
    }
}

@media screen and (max-width: 768px) {
    .vision-mission {
        padding: 60px 0;
    }

    .vision-mission-content {
        gap: 40px;
    }

    .vision, .mission {
        padding: 30px 15px;
    }

    .vision .section-title, .mission .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .vision-statement {
        font-size: 1.6rem;
        line-height: 1.8;
    }

    .mission-text p {
        font-size: 1.4rem;
        line-height: 1.8;
    }
}

/* ツール紹介セクションのスタイル */
.tools {
    background-color: var(--secondary-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.tool-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    padding: 40px 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    transform: translateY(0);
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.tool-icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 100px;
    height: 100px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-radius: 50%;
    margin-bottom: 20px;
    font-size: 40px;
    transition: transform 0.3s ease;
}

.tool-card:hover .tool-icon {
    transform: scale(1.1);
}

.tool-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.tool-card p {
    color: var(--text-light);
    margin-bottom: 25px;
    font-size: 1rem;
}

.status, .tool-link {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.status {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

.tool-link {
    background-color: var(--primary-color);
    color: var(--white);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tool-link:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.tool-link i {
    font-size: 1.1em;
}

/* お問い合わせセクションのスタイル */
.contact {
    background-color: var(--bg-color);
    padding: 100px 0;
    text-align: center;
    position: relative;
}

.contact .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.contact-content {
    margin-top: 40px;
}

.contact-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--text-color);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    font-size: 1.1rem;
}

.contact-link:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.contact-link i {
    font-size: 1.2em;
}

/* フッタースタイル */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo-img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* レスポンシブスタイル */
@media screen and (max-width: 992px) {
    .vision-mission-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media screen and (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    nav {
        position: absolute;
        top: 74px;
        left: 0;
        background: var(--white);
        width: 100%;
        height: 0;
        overflow: hidden;
        transition: height 0.3s ease;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    nav.active {
        height: auto;
    }

    nav ul {
        flex-direction: column;
        padding: 20px;
    }

    nav ul li {
        margin: 0 0 15px 0;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .hero {
        padding: 150px 0 100px;
    }

    .main-copy {
        font-size: 2rem;
    }

    .sub-copy {
        font-size: 1.1rem;
    }

    .greeting-text p {
        font-size: 1rem;
    }

    .vision-statement {
        font-size: 1.4rem;
    }

    .mission-text p {
        font-size: 1.2rem;
    }

    section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .contact {
        padding: 80px 0;
    }

    .contact .container {
        padding: 0 15px;
    }

    .contact-content p {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }

    .contact-link {
        padding: 14px 30px;
        font-size: 1rem;
    }

    footer {
        padding: 40px 0;
    }

    .footer-logo-img {
        height: 40px;
    }
}

/* ビジョンセクションのスタイル */
.vision {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.vision::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path fill="rgba(255,255,255,0.05)" d="M0,0 L100,0 L100,100 L0,100 Z"/></svg>');
    opacity: 0.1;
}

.vision-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.vision .section-title {
    color: var(--white);
    margin-bottom: 50px;
}

.vision .section-title:after {
    background: var(--white);
}

.vision-statement {
    font-size: 2rem;
    font-weight: 300;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.vision-statement:nth-child(2) {
    animation-delay: 0.2s;
}

.vision-statement:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* セクション間のスペーシング調整 */
section:not(:last-child) {
    margin-bottom: 0;
}

section {
    position: relative;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: currentColor;
    left: 50%;
    transform: translateX(-50%);
    bottom: -15px;
}