/* ==================== リセット & ベーススタイル ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット */
    --color-navy: #1A2B4A;
    --color-navy-light: #2C3E5F;
    --color-navy-dark: #0F1A2E;
    --color-gold: #C8973A;
    --color-gold-light: #D4A854;
    --color-gold-dark: #A67D2C;
    --color-white: #FFFFFF;
    --color-light-gray: #F5F7FA;
    --color-gray: #E0E4E9;
    --color-text: #333333;
    --color-text-light: #666666;
    
    /* フォント */
    --font-family: 'Noto Sans JP', sans-serif;
    
    /* トランジション */
    --transition: all 0.3s ease;
    
    /* シャドウ */
    --shadow-sm: 0 2px 8px rgba(26, 43, 74, 0.08);
    --shadow-md: 0 4px 16px rgba(26, 43, 74, 0.12);
    --shadow-lg: 0 8px 32px rgba(26, 43, 74, 0.16);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section--dark {
    background: var(--color-navy);
    color: var(--color-white);
}

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

/* ==================== ヘッダー & ナビゲーション ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 20px 0;
}

.header.scrolled {
    background: rgba(26, 43, 74, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-ray {
    color: var(--color-gold);
}

.logo-partners {
    color: var(--color-white);
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav__link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: var(--transition);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    background: var(--color-gold);
    color: var(--color-navy);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    background: var(--color-gold-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 24px;
    cursor: pointer;
}

/* ==================== ヒーローセクション ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    overflow: hidden;
}

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

.hero__background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(200, 151, 58, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(200, 151, 58, 0.15) 0%, transparent 50%);
}

.hero__content {
    text-align: center;
    padding: 180px 24px 120px;
}

.hero__title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero__title-main {
    display: block;
}

.hero__title-sub {
    display: block;
    color: var(--color-gold);
}

.hero__description {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 60px;
    color: rgba(255, 255, 255, 0.9);
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 50px;
}

.hero__stat {
    text-align: center;
}

.stat__number {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
    margin-bottom: 12px;
}

.stat__number span {
    font-size: 24px;
    font-weight: 600;
}

.stat__label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--color-gold);
    color: var(--color-navy);
    padding: 18px 48px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.hero__cta:hover {
    background: var(--color-gold-light);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(200, 151, 58, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gold), transparent);
    animation: scrollAnimation 2s infinite;
}

@keyframes scrollAnimation {
    0%, 100% {
        opacity: 0;
        transform: translateY(-20px);
    }
    50% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== セクション共通スタイル ==================== */
.section__header {
    text-align: center;
    margin-bottom: 60px;
}

.section__subtitle {
    display: inline-block;
    color: var(--color-gold);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section__title {
    font-size: 42px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 16px;
}

.section--dark .section__title {
    color: var(--color-white);
}

.section__description {
    font-size: 16px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section--dark .section__description {
    color: rgba(255, 255, 255, 0.8);
}

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

/* ==================== 会社概要セクション ==================== */
.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about__heading {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 24px;
}

.about__description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature__item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature__icon {
    color: var(--color-gold);
    font-size: 20px;
    flex-shrink: 0;
}

.feature__item span {
    font-size: 15px;
    color: var(--color-text);
    font-weight: 500;
}

.about__visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.visual__card {
    background: var(--color-white);
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.visual__card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gold);
}

.visual__card--1 {
    grid-column: 1 / -1;
}

.visual__card i {
    font-size: 48px;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.visual__card p {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-navy);
    line-height: 1.6;
}

/* ==================== サービスセクション ==================== */
.service__content {
    max-width: 900px;
    margin: 0 auto;
}

.service__heading {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
    line-height: 1.5;
}

.service__description {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
    margin-bottom: 60px;
}

.service__process {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.process__step {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(200, 151, 58, 0.3);
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

.process__step:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-gold);
    transform: translateY(-5px);
}

.step__number {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.step__title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 12px;
}

.step__description {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.process__arrow {
    color: var(--color-gold);
    font-size: 24px;
    flex-shrink: 0;
}

/* ==================== 強みセクション ==================== */
.strengths__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.strength__card {
    background: var(--color-white);
    padding: 48px 32px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 3px solid transparent;
}

.strength__card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gold);
}

.strength__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold);
    font-size: 32px;
}

.strength__title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 20px;
}

.strength__highlight {
    margin-bottom: 24px;
}

.highlight__number {
    font-size: 64px;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
}

.highlight__unit {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-navy);
}

.strength__description {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* ==================== 支援領域セクション ==================== */
.solutions__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.solution__card {
    background: var(--color-white);
    border-radius: 12px;
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.solution__card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.solution__header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--color-gray);
}

.solution__icon {
    font-size: 48px;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.solution__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-navy);
}

.solution__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.solution__list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.6;
}

.solution__list i {
    color: var(--color-gold);
    font-size: 16px;
    margin-top: 3px;
    flex-shrink: 0;
}

/* ==================== お問い合わせセクション ==================== */
.contact__content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact__form {
    background: var(--color-white);
    padding: 48px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.form__group {
    margin-bottom: 28px;
}

.form__label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 10px;
}

.required {
    color: var(--color-gold);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-gray);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 15px;
    transition: var(--transition);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(200, 151, 58, 0.1);
}

.form__textarea {
    resize: vertical;
}

.form__submit {
    width: 100%;
    padding: 16px 32px;
    background: var(--color-gold);
    color: var(--color-navy);
    border: none;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: var(--transition);
}

.form__submit:hover {
    background: var(--color-gold-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.info__item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.info__item i {
    font-size: 28px;
    color: var(--color-gold);
    flex-shrink: 0;
}

.info__item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 8px;
}

.info__item p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ==================== フッター ==================== */
.footer {
    background: var(--color-navy-dark);
    color: var(--color-white);
    padding: 60px 0 30px;
}

.footer__content {
    text-align: center;
    margin-bottom: 40px;
}

.footer__logo {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer__tagline {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
}

.footer__bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer__copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* ==================== アニメーション ==================== */
.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s both;
}

.animate-slide-up {
    animation: slideUp 1s ease-out 0.6s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== レスポンシブデザイン ==================== */
@media screen and (max-width: 1024px) {
    .section {
        padding: 80px 0;
    }

    .hero__title {
        font-size: 48px;
    }

    .hero__stats {
        gap: 40px;
    }

    .about__content {
        gap: 60px;
    }

    .strengths__grid,
    .solutions__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--color-navy);
        flex-direction: column;
        padding: 40px 24px;
        gap: 24px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav__menu.active {
        left: 0;
    }

    .nav__toggle {
        display: block;
    }

    .hero__title {
        font-size: 36px;
    }

    .hero__description {
        font-size: 18px;
    }

    .hero__stats {
        flex-direction: column;
        gap: 32px;
    }

    .stat__number {
        font-size: 48px;
    }

    .section__title {
        font-size: 32px;
    }

    .about__content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about__heading {
        font-size: 28px;
    }

    .service__process {
        flex-direction: column;
    }

    .process__arrow {
        transform: rotate(90deg);
    }

    .strengths__grid,
    .solutions__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact__content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact__form {
        padding: 32px 24px;
    }

    .mobile-break {
        display: inline;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 60px 0;
    }

    .hero__title {
        font-size: 28px;
    }

    .hero__description {
        font-size: 16px;
    }

    .hero__cta {
        padding: 14px 32px;
        font-size: 16px;
    }

    .stat__number {
        font-size: 40px;
    }

    .section__title {
        font-size: 28px;
    }

    .strength__card,
    .solution__card {
        padding: 32px 24px;
    }
}