:root {
    /* Colors */
    --color-bg: #FFFFFF;
    --color-text-main: #333333;
    --color-text-light: #666666;
    --color-accent: #00BFA5;
    /* Primary Green */
    --color-accent-light: #E0F2F1;
    /* Light Green Background */
    --color-accent-dark: #00897B;
    --color-black: #111111;
    --color-white: #FFFFFF;
    --color-gray-bg: #F9FAFB;

    /* Fonts */
    --font-base: 'Inter', 'Noto Sans JP', sans-serif;

    /* Spacing */
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-base);
    color: var(--color-text-main);
    background-color: var(--color-bg);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

a:hover {
    opacity: 0.8;
}

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

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Utilities */
.block {
    display: block;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 3rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.btn--primary {
    background-color: var(--color-black);
    color: var(--color-white);
    background: linear-gradient(90deg, var(--color-black), var(--color-text-main));
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn--white {
    background-color: var(--color-white);
    color: var(--color-accent);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn--white:hover {
    color: var(--color-accent-dark);
}

.btn--nav {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
    margin-left: 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.logo__image {
    height: 75px;
    width: auto;
    margin-right: -25px;
    transform: scale(1.3);
    margin-left: -25px;
}

.logo__text {
    font-weight: 700;
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    color: var(--color-black);
}

.nav__list {
    display: none;
}

@media (min-width: 768px) {
    .nav__list {
        display: flex;
        align-items: center;
        list-style: none;
        gap: 2rem;
    }

    .nav__link {
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--color-text-main);
        position: relative;
    }

    .nav__link::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0%;
        height: 2px;
        background-color: var(--color-accent);
        transition: width 0.3s ease;
    }

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 100%;
    height: 2px;
    background-color: var(--color-black);
    transition: all 0.3s linear;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-white);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: right 0.3s ease-in-out;
    z-index: 999;
}

.mobile-menu.active {
    right: 0;
}

.mobile-nav__list {
    list-style: none;
    text-align: center;
}

.mobile-nav__item {
    margin: 2rem 0;
}

.mobile-nav__link {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-main);
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: var(--header-height);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, #ffffff 0%, #f4f4f4 100%);
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero__container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    position: relative;
    z-index: 1;
    /* Ensure text is above canvas */
}

.hero__content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    word-break: keep-all;
    overflow-wrap: break-word;
}

.hero__lead {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-light);
    margin-bottom: 3rem;
    margin-left: 0.5rem;
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

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

.section-header--left {
    text-align: left;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    color: var(--color-black);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
    position: relative;
    display: inline-block;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.1em;
}

/* Service Section */
.service {
    background-color: var(--color-gray-bg);
}

.service__grid {
    display: flex;
    /* Changed from grid to flex column for rows */
    flex-direction: column;
    gap: 4rem;
}

.service__grid--illustration {
    max-width: 1000px;
    margin: 0 auto;
}

.service__card {
    background: var(--color-white);
    border-radius: 24px;
    overflow: hidden;
    /* For image */
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.02);
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .service__card--row {
        flex-direction: row;
        align-items: center;
        height: 320px;
        /* Fixed height for consistency */
    }

    /* Alternating layout */
    .service__card--row:nth-child(even) {
        flex-direction: row-reverse;
    }
}

.service__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
    /* Lift effect */
}

.service__card-content {
    flex: 1;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service__card-visual {
    flex: 1;
    height: 100%;
    overflow: hidden;
    background: #f0f0f0;
}

.service__card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service__card:hover .service__card-visual img {
    transform: scale(1.05);
    /* Zoom effect */
}

.service__card-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--color-text-main);
}

.service__card-text {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.service__btn {
    display: inline-flex;
    align-items: center;
    color: var(--color-accent);
    font-weight: 700;
    text-decoration: none;
    transition: color 0.3s;
}

.service__btn::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s;
}

.service__btn:hover {
    color: var(--color-accent-dark);
}

.service__btn:hover::after {
    transform: translateX(5px);
}

/* Service Image Blur Modifier */
.service__card-visual .service-img-blur {
    filter: grayscale(100%);
    transform: scale(1.15);
}

.service__card:hover .service__card-visual .service-img-blur {
    transform: scale(1.2);
}

/* Service Image Grayscale Modifier */
.service__card-visual .service-img-grayscale {
    filter: grayscale(100%);
    transition: filter 0.3s ease, transform 0.5s ease;
}

.service__card:hover .service__card-visual .service-img-grayscale {
    transform: scale(1.05);
}

/* News Section */
.news {
    padding-top: var(--spacing-lg);
    background-color: var(--color-bg);
}

.news__container {
    max-width: 1000px;
}

.news__list {
    list-style: none;
    border-top: 1px solid #eee;
}

.news__item {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    border-bottom: 1px solid #eee;
    transition: background-color 0.3s;
}

@media (min-width: 768px) {
    .news__item {
        flex-direction: row;
        align-items: center;
    }
}

.news__item:hover {
    background-color: var(--color-gray-bg);
    padding-left: 1rem;
}

.news__date {
    font-family: 'Inter', sans-serif;
    color: var(--color-text-light);
    margin-right: 2rem;
    font-size: 0.9rem;
}

.news__category {
    display: inline-block;
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 0.2rem 0.8rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    margin-right: 2rem;
    width: fit-content;
}

@media (min-width: 768px) {
    .news__category {
        margin-bottom: 0;
    }
}

.news__link {
    color: var(--color-text-main);
    font-weight: 500;
    flex: 1;
}

.news__link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* Mission Section */
.mission {
    background-color: var(--color-bg);
    text-align: left;
    /* padding-top: 0; Removed to increase spacing */
}

.mission__content {
    max-width: 800px;
    margin: 0;
}

.mission__lead {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.3;
    font-weight: 700;
    margin-bottom: 3rem;
    font-feature-settings: "palt";
    background: linear-gradient(135deg, var(--color-black) 0%, #333 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mission__text {
    font-size: 1.1rem;
    line-height: 2.2;
    color: var(--color-text-light);
}

/* Recruit Section */
.recruit {
    background-color: var(--color-black);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.recruit::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 191, 165, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.recruit__title {
    font-family: 'Inter', sans-serif;
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #999);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.recruit__lead {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--color-accent);
}

.recruit__text {
    font-size: 1rem;
    color: #ccc;
    margin-bottom: 3rem;
    line-height: 1.8;
}

.recruit__btn {
    min-width: 200px;
}

/* Company Section */
.company {
    background-color: var(--color-gray-bg);
}

.company-info {
    max-width: 600px;
    margin: 0 auto;
    border-top: 1px solid #eee;
    text-align: left;
    /* Keep definition list left-aligned for readability */
}

.company-info__row {
    display: flex;
    padding: 1.5rem 0;
    border-bottom: 1px solid #eee;
}

.company-info__row dt {
    width: 150px;
    font-weight: 700;
    color: var(--color-black);
}

/* Contact Section */
.contact {
    padding-bottom: 0;
}

.contact__container {
    padding-bottom: var(--spacing-xl);
}

.contact__box {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: 30px;
    padding: var(--spacing-xl) 2rem;
    text-align: center;
    color: var(--color-white);
}

.contact__title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.contact__text {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    padding: 2rem 0;
    background-color: var(--color-black);
    color: var(--color-white);
    text-align: center;
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Form Styles */
.contact__form-wrapper {
    max-width: 600px;
    margin: 2rem auto 0;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--color-white);
    font-size: 0.95rem;
}

.required {
    color: #ff8a80;
    margin-left: 0.25rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.95);
    font-family: var(--font-base);
    font-size: 1rem;
    color: var(--color-text-main);
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-white);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-button-container {
    text-align: center;
    margin-top: 2rem;
}

.form-submit-btn {
    min-width: 200px;
    border: none;
}