/* style.css */
/* ベース設定とユーティリティクラス */

:root {
    /* メインカラー - 通信業界らしいデジタルカラー */
    --primary-color: #1a237e; /* ディープブルー */
    --secondary-color: #3f51b5; /* インディゴブルー */
    --accent-color: #2196f3; /* ライトブルー */
    --accent-secondary: #00bcd4; /* シアン */
    --success-color: #4caf50; /* グリーン */
    --warning-color: #ff9800; /* オレンジ */
    --text-dark: #212121; /* 主要テキスト色 */
    --text-light: #757575; /* サブテキスト色 */
    --bg-light: #FFFFFF; /* 背景色（明） */
    --bg-off-white: #F8F9FA; /* 背景色（やや暗） */
    --bg-dark: #263238; /* ダーク背景 */
    --bg-glass: rgba(255, 255, 255, 0.1); /* グラス効果 */
    --bg-glass-dark: rgba(0, 0, 0, 0.1); /* ダークグラス効果 */
    
    /* グラデーション */
    --gradient-primary: linear-gradient(135deg, #1a237e, #3f51b5);
    --gradient-secondary: linear-gradient(135deg, #3f51b5, #2196f3);
    --gradient-accent: linear-gradient(135deg, #2196f3, #00bcd4);
    --gradient-dark: linear-gradient(135deg, #263238, #37474f);
    --gradient-hero: linear-gradient(135deg, #1a237e 0%, #3f51b5 50%, #2196f3 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* シャドウ - 控えめに調整 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.37);
    --shadow-card: 0 8px 24px rgba(26, 35, 126, 0.15);
    
    /* トランジション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* ボーダーラジウス */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* レイアウト */
    --container-width: 124rem;
    --header-height: 8rem;
    --section-padding: 12rem 0;
}

/* コンテナ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

/* セクション共通 */
.section {
    position: relative;
    padding: var(--section-padding);
    overflow: hidden;
}

.bg-light {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
}

.bg-dark {
    background: var(--gradient-dark);
    color: #fff;
}

/* セクションヘッダー - モダンなデザイン */
.section-header {
    text-align: center;
    margin-bottom: 8rem;
    position: relative;
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: 2rem;
    z-index: 1;
}

.section-title .jp {
    display: block;
    font-size: 3.6rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title .en {
    display: block;
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--accent-color);
    text-transform: uppercase;
    position: relative;
}

.section-title .en::before,
.section-title .en::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40px;
    height: 1px;
    background: var(--accent-color);
}

.section-title .en::before {
    left: -60px;
}

.section-title .en::after {
    right: -60px;
}

.title-line {
    display: none; /* 新しいデザインでは不要 */
}

.section-subtitle {
    font-size: 1.8rem;
    color: var(--text-light);
    max-width: 60rem;
    margin: 0 auto;
    font-weight: 300;
    line-height: 1.6;
}

.bg-dark .section-title .jp {
    background: linear-gradient(135deg, #ffffff 0%, #00bcd4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ボタンスタイル - より現代的なデザイン */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.4rem 3.2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.6rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: var(--transition-normal);
    text-align: center;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-normal);
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(26, 35, 126, 0.25);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(63, 81, 181, 0.25);
}

.btn-outline {
    background: var(--bg-glass);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-4px);
}

.btn-light {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    box-shadow: var(--shadow-glass);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-light:hover {
    background: white;
    transform: translateY(-4px);
}

.btn-outline-light {
    background: var(--bg-glass);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.btn-sm {
    padding: 1rem 2.4rem;
    font-size: 1.4rem;
    border-radius: var(--radius-md);
}

.btn i {
    margin-left: 1rem;
    transition: var(--transition-normal);
}

.btn:hover i {
    transform: translateX(4px);
}

/* 背景装飾 - 通信業界らしいネットワーク風デザイン */
.section-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-accent);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.decoration-circle.c1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 80%;
    animation-delay: 0s;
}

.decoration-circle.c2 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 10%;
    animation-delay: 2s;
}

.decoration-circle.c3 {
    width: 100px;
    height: 100px;
    top: 60%;
    right: 15%;
    animation-delay: 4s;
}

.decoration-circle.c4 {
    width: 250px;
    height: 250px;
    bottom: 10%;
    right: 70%;
    animation-delay: 1s;
}

/* ネットワーク風ライン */
.decoration-line {
    position: absolute;
    width: 2px;
    height: 200px;
    background: linear-gradient(0deg, transparent, var(--accent-color), transparent);
    opacity: 0.3;
    animation: pulse 3s ease-in-out infinite;
}

.decoration-line.horizontal {
    width: 200px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

/* データポイント風装飾 */
.decoration-dots {
    position: absolute;
    width: 100%;
    height: 100%;
}

.decoration-dots::before,
.decoration-dots::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 50%;
    opacity: 0.6;
    animation: blink 2s ease-in-out infinite alternate;
}

.decoration-dots::before {
    top: 30%;
    left: 20%;
}

.decoration-dots::after {
    bottom: 40%;
    right: 25%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 0.8; transform: scaleY(1.2); }
}

@keyframes blink {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

/* アニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.stagger-fade {
    opacity: 0;
}

.stagger-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.no-js .fade-in,
.no-js .slide-in-left,
.no-js .slide-in-right,
.no-js .stagger-fade,
.no-js .stagger-item {
    opacity: 1;
    transform: none;
}

.reveal-text span {
    display: block;
    overflow: hidden;
}

.reveal-text span > span {
    display: block;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.fade-in.visible,
.slide-in-left.visible,
.slide-in-right.visible,
.stagger-fade.visible,
.stagger-item.visible {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

.reveal-text.visible span > span {
    transform: translateY(0);
}

/* ヘッダー - より現代的なデザイン */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(26, 35, 126, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ロゴスタイル - より洗練されたデザイン */
.logo {
    display: flex;
    align-items: center;
    z-index: 1000;
}

.logo a {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 2.8rem;
    letter-spacing: 0.02em;
    text-decoration: none;
}

.logo-c, .logo-y, .logo-p, .logo-h, .logo-e, .logo-r {
    display: inline-block;
    transition: var(--transition-bounce);
    position: relative;
}

.logo-c {
    color: var(--primary-color);
    margin-right: 0.05rem;
    text-shadow: 0 2px 4px rgba(26, 35, 126, 0.2);
}

.logo-y {
    color: var(--secondary-color);
    margin-right: 0.05rem;
    text-shadow: 0 2px 4px rgba(63, 81, 181, 0.2);
}

.logo-p {
    color: var(--accent-color);
    margin-right: 0.05rem;
    text-shadow: 0 2px 4px rgba(33, 150, 243, 0.2);
}

.logo-h {
    color: var(--accent-secondary);
    margin-right: 0.05rem;
    text-shadow: 0 2px 4px rgba(0, 188, 212, 0.2);
}

.logo-e {
    color: var(--secondary-color);
    margin-right: 0.05rem;
    text-shadow: 0 2px 4px rgba(63, 81, 181, 0.2);
}

.logo-r {
    color: var(--primary-color);
    text-shadow: 0 2px 4px rgba(26, 35, 126, 0.2);
}

.logo a:hover .logo-c,
.logo a:hover .logo-y,
.logo a:hover .logo-p,
.logo a:hover .logo-h,
.logo a:hover .logo-e,
.logo a:hover .logo-r {
    transform: translateY(-3px) scale(1.05);
}

/* ナビゲーション - よりモダンなスタイル */
.nav-menu {
    display: flex;
    align-items: center;
}

.menu-list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-item {
    margin-left: 3rem;
}

.menu-item a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.5rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.menu-item a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
    transform: translateX(-50%);
}

.menu-item a:hover {
    color: var(--primary-color);
    background: rgba(26, 35, 126, 0.05);
}

.menu-item a:hover::before,
.menu-item a.active::before {
    width: 80%;
}

.menu-item a.active {
    color: var(--primary-color);
    background: rgba(26, 35, 126, 0.1);
}

.contact-btn a {
    background: var(--gradient-primary);
    color: white !important;
    border-radius: var(--radius-lg);
    padding: 1.2rem 2.4rem;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-btn a::before {
    display: none;
}

.contact-btn a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 35, 126, 0.3);
    background: var(--gradient-secondary) !important;
}

/* ハンバーガーメニュー */
.hamburger-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-menu span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

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

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

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

@media (max-width: 1024px) {
    .hamburger-menu {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        transition: var(--transition-normal);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 4rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-list {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
    }

    .menu-item {
        margin: 0.5rem 2rem;
    }

    .menu-item a {
        display: block;
        padding: 1.5rem 2rem;
        font-size: 1.6rem;
        border-bottom: 1px solid rgba(26, 35, 126, 0.1);
    }

    .menu-item a::before {
        display: none;
    }

    .menu-item a:hover::before,
    .menu-item a.active::before {
        display: none;
    }

    .contact-btn {
        margin: 2rem;
    }

    .contact-btn a {
        display: block;
        text-align: center;
        margin: 0;
    }
}

/* ヒーローセクション - 大幅に刷新 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    z-index: 1;
    opacity: 0.3;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    opacity: 0.9;
    z-index: 3;
}

.pattern-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255,255,255,0.1) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 4;
    animation: float 20s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
    max-width: 1000px;
    padding: 0 2rem;
}

.main-catch {
    font-size: 5.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 2.5rem;
    letter-spacing: 0.02em;
}

.main-catch span > span {
    display: inline-block;
    background: linear-gradient(135deg, #ffffff 0%, #00bcd4 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.main-catch span > span:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.8s ease;
    transform-origin: left;
}

.sub-catch {
    font-size: 2.2rem;
    font-weight: 300;
    margin-bottom: 4rem;
    opacity: 0.9;
    letter-spacing: 0.05em;
    line-height: 1.4;
}

.sub-catch.fade-in.visible {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 10px rgba(255,255,255,0.5); }
    to { text-shadow: 0 0 20px rgba(0,188,212,0.8), 0 0 30px rgba(0,188,212,0.6); }
}

.cta-buttons {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 4rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.4rem;
    font-weight: 500;
    z-index: 10;
}

.scroll-indicator span {
    display: block;
    margin-bottom: 1rem;
    letter-spacing: 0.2em;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: rgba(255, 255, 255, 0.6);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

/* 実績カード用の背景色 */
.achievement-mobile {
    background: var(--gradient-primary);
}

.achievement-event {
    background: var(--gradient-secondary);
}

.achievement-consulting {
    background: var(--gradient-accent);
}

.achievement-solution {
    background: var(--gradient-dark);
}

/* コンセプトセクション - カード型デザインに変更 */
.concept {
    background: linear-gradient(145deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
}

.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
    margin-bottom: 8rem;
}

.concept-text {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 4rem;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-glass);
}

.concept-text .lead {
    font-size: 2.4rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.concept-text p {
    font-size: 1.6rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.concept-text p.highlight {
    background: var(--gradient-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-color);
    font-weight: 500;
    color: var(--primary-color);
}

.concept-text .btn {
    margin-top: 2rem;
}

.concept-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.image-inner {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
}

.placeholder-image::before {
    content: '企業イメージ写真';
    z-index: 2;
    position: relative;
}

.placeholder-image::after {
    content: '';
    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"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: var(--gradient-accent);
    border-radius: 50%;
    opacity: 0.2;
    z-index: -1;
}

/* 価値観カード - 大幅にリデザイン */
.concept-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.value-item {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 3rem;
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid rgba(26, 35, 126, 0.1);
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.value-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    transition: var(--transition-normal);
    z-index: -1;
}

.value-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(26, 35, 126, 0.2);
}

.value-item:hover::before {
    left: 0;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-card);
}

.value-icon i {
    font-size: 2.4rem;
    color: white;
}

.value-item h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.value-item p {
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--text-light);
}

/* 商品/実績セクション - カードグリッドを刷新 */
.products {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
}

.product-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 6rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 1.2rem 2.4rem;
    border: 2px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: 1.4rem;
    cursor: pointer;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.product-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-card);
    transition: var(--transition-normal);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(26, 35, 126, 0.15);
}

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.product-image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 1.2rem;
    font-weight: 600;
    z-index: 2;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 126, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay-content {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-normal);
}

.product-card:hover .product-overlay-content {
    opacity: 1;
    transform: translateY(0);
}

.product-info {
    padding: 2.5rem;
}

.product-category {
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.product-name {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.product-desc {
    font-size: 1.4rem;
    line-height: 1.6;
    color: var(--text-light);
}

.products-more {
    text-align: center;
    margin-top: 6rem;
}

/* レスポンシブ対応 */
@media (max-width: 1200px) {
    :root {
        --section-padding: 10rem 0;
    }

    .main-catch {
        font-size: 4.5rem;
    }

    .concept-grid {
        gap: 4rem;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

@media (max-width: 992px) {
    html {
        font-size: 55%;
    }

    :root {
        --section-padding: 8rem 0;
    }

    .main-catch {
        font-size: 4rem;
    }

    .concept-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .concept-text {
        padding: 3rem;
    }

    .concept-values {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 50%;
    }

    :root {
        --section-padding: 6rem 0;
    }

    .main-catch {
        font-size: 3.5rem;
    }

    .sub-catch {
        font-size: 1.8rem;
    }

    .cta-buttons {
        gap: 1.5rem;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .product-filter {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 1rem 1.8rem;
        font-size: 1.2rem;
    }

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

    .footer-bottom .container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-bottom-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    :root {
        --section-padding: 4rem 0;
    }

    .main-catch {
        font-size: 3rem;
    }

    .hero {
        min-height: 700px;
    }

    .concept-values {
        grid-template-columns: 1fr;
    }

    .card-content {
        padding: 2rem;
    }

    .back-to-top {
        width: 50px;
        height: 50px;
    }
}

/* フッタースタイル - 控えめで洗練されたデザイン */
.footer {
    background: linear-gradient(135deg, #263238 0%, #37474f 100%);
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.footer-top {
    padding: 6rem 0 3rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

/* 会社情報 - 控えめに */
.footer-company {
    max-width: 400px;
}

.footer-logo {
    margin-bottom: 2rem;
}

.footer-logo a {
    display: flex;
    align-items: center;
    font-weight: 600;
    font-size: 2.2rem;
    color: white;
    text-decoration: none;
    letter-spacing: 0.02em;
}

.footer-logo .logo-c,
.footer-logo .logo-y,
.footer-logo .logo-p,
.footer-logo .logo-h,
.footer-logo .logo-e,
.footer-logo .logo-r {
    transition: var(--transition-normal);
    opacity: 0.9;
}

.footer-logo a:hover .logo-c,
.footer-logo a:hover .logo-y,
.footer-logo a:hover .logo-p,
.footer-logo a:hover .logo-h,
.footer-logo a:hover .logo-e,
.footer-logo a:hover .logo-r {
    opacity: 1;
    transform: translateY(-1px);
}

.footer-tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
    line-height: 1.5;
}

.footer-address {
    font-size: 1.4rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    font-style: normal;
    margin-bottom: 2rem;
}

.footer-address br {
    margin-bottom: 0.3rem;
}

/* サイトマップ - シンプルに */
.footer-links-section {
    
}

.footer-heading {
    font-size: 1.6rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 30px;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links li a {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-normal);
    display: inline-block;
    text-decoration: none;
}

.footer-links li a:hover {
    color: rgba(255, 255, 255, 0.9);
    transform: translateX(3px);
}

/* お問い合わせセクション - 控えめに */
.footer-contact-section {
    
}

.footer-contact-section p {
    font-size: 1.4rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
}

.footer-contact-section .btn {
    padding: 0.8rem 2rem;
    font-size: 1.3rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.footer-contact-section .btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.3);
}

.contact-info {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.8) !important;
    line-height: 1.6;
    margin-top: 1rem;
}

.contact-info strong {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* SNSリンク - 控えめに */
.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.4rem;
    transition: var(--transition-normal);
    text-decoration: none;
    backdrop-filter: blur(10px);
}

.social-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

/* フッターボトム - 非常にシンプルに */
.footer-bottom {
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(0, 0, 0, 0.2);
}

.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 300;
}

.footer-bottom-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer-bottom-links a:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* トップに戻るボタン - 控えめに調整 */
.back-to-top {
    position: fixed;
    bottom: 3rem;
    right: 3rem;
    width: 4.5rem;
    height: 4.5rem;
    background: rgba(26, 35, 126, 0.9);
    color: white;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 4px 20px rgba(26, 35, 126, 0.3);
    backdrop-filter: blur(10px);
    z-index: 999;
    font-size: 1.4rem;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    background: rgba(26, 35, 126, 1);
    box-shadow: 0 6px 25px rgba(26, 35, 126, 0.4);
}

/* レスポンシブ対応 */
@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .footer-contact-section {
        grid-column: 1 / -1;
        text-align: center;
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
}

@media (max-width: 768px) {
    .footer-top {
        padding: 4rem 0 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .footer-company {
        max-width: none;
    }
    
    .footer-heading::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-bottom-links {
        justify-content: center;
    }
    
    .back-to-top {
        width: 4rem;
        height: 4rem;
        bottom: 2rem;
        right: 2rem;
    }
}

@media (max-width: 576px) {
    .footer-bottom-links {
        flex-direction: column;
        gap: 0.8rem;
    }
}