/* ========================================
   株式会社オフィス寺島 コーポレートサイト
   CSS スタイルシート
   ======================================== */

/* ---------- CSS変数 ---------- */
:root {
    --color-primary: #1a5276;
    --color-primary-light: #2980b9;
    --color-primary-dark: #0e3a56;
    --color-accent: #e67e22;
    --color-accent-light: #f39c12;
    --color-white: #ffffff;
    --color-bg: #f8f9fa;
    --color-bg-dark: #0d1b2a;
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-border: #e0e0e0;
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- リセット ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

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

ul {
    list-style: none;
}

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

.sp-only { display: none; }

/* ---------- ヘッダー ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-main {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    transition: var(--transition);
}

.logo-sub {
    font-size: 0.65rem;
    color: rgba(255,255,255,0.7);
    letter-spacing: 0.15em;
    transition: var(--transition);
}

.header.scrolled .logo-main {
    color: var(--color-primary-dark);
}

.header.scrolled .logo-sub {
    color: var(--color-text-light);
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

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

.header.scrolled .nav-link {
    color: var(--color-text);
}

.header.scrolled .nav-link:hover {
    color: var(--color-primary);
}

/* ハンバーガー */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

.header.scrolled .hamburger span {
    background: var(--color-text);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ---------- ヒーロー ---------- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease;
    transform: scale(1.05);
}

.hero-slide.active {
    opacity: 1;
    transform: scale(1);
    animation: heroZoom 8s ease forwards;
}

@keyframes heroZoom {
    from { transform: scale(1); }
    to { transform: scale(1.08); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(13, 27, 42, 0.4) 0%,
        rgba(13, 27, 42, 0.5) 50%,
        rgba(13, 27, 42, 0.7) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 24px;
}

.hero-catch {
    font-size: 1rem;
    letter-spacing: 0.3em;
    margin-bottom: 16px;
    opacity: 0.9;
    font-weight: 300;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: 24px;
    line-height: 1.3;
}

.hero-desc {
    font-size: 1.05rem;
    line-height: 2;
    opacity: 0.9;
    font-weight: 300;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.4);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 126, 34, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.6);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

/* スクロールインジケーター */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.3);
    position: relative;
    overflow: hidden;
}

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

@keyframes scrollDown {
    0% { top: -100%; }
    100% { top: 100%; }
}

/* ---------- フェードアニメーション ---------- */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }
.delay-3 { animation-delay: 0.9s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- セクション共通 ---------- */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    color: var(--color-accent);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.1em;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary-light));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ==========================================
   会社理念・ビジョン・ミッション・バリュー・メッセージ
   ========================================== */

/* ---------- 共通: light header ---------- */
.section-header-light .section-label {
    color: rgba(255,255,255,0.7);
}
.section-header-light .section-title {
    color: var(--color-white);
}
.section-header-light .section-line {
    background: linear-gradient(90deg, rgba(255,255,255,0.6), var(--color-accent));
}

/* ---------- PHILOSOPHY（会社理念） ---------- */
.philosophy-section {
    background: var(--color-bg);
    padding-bottom: 80px;
}

.philosophy-hero {
    text-align: center;
    margin-bottom: 56px;
}

.philosophy-catchphrase {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.12em;
    line-height: 1.4;
    position: relative;
    display: inline-block;
}

.philosophy-catchphrase::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: var(--color-accent);
    margin: 24px auto 0;
}

.philosophy-body {
    max-width: 800px;
    margin: 0 auto;
}

.philosophy-text-block {
    text-align: center;
}

.philosophy-text-block p {
    font-size: 1.05rem;
    line-height: 2.2;
    color: var(--color-text);
    margin-bottom: 28px;
}

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

/* ---------- VISION（ビジョン） ---------- */
.vision-section {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    overflow: hidden;
}

.vision-bg-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="45" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/><circle cx="50" cy="50" r="30" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/><circle cx="50" cy="50" r="15" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></svg>') center/400px repeat;
    pointer-events: none;
}

.vision-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.vision-content p {
    font-size: 1.1rem;
    line-height: 2.2;
    color: rgba(255,255,255,0.9);
    margin-bottom: 28px;
}

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

/* ---------- MISSION（ミッション） ---------- */
.mission-section {
    background: var(--color-white);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.mission-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 36px 20px 28px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.mission-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.mission-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.mission-card:hover::before {
    transform: scaleX(1);
}

.mission-card-num {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary-light);
    opacity: 0.4;
    margin-bottom: 16px;
    line-height: 1;
}

.mission-card p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-text);
    font-weight: 500;
}

.mission-summary {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: 40px;
    background: var(--color-bg);
    border-radius: var(--radius);
    border-left: 4px solid var(--color-accent);
}

.mission-summary p {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    line-height: 2.2;
    color: var(--color-primary-dark);
    font-weight: 500;
}

/* ---------- VALUE（バリュー） ---------- */
.value-section {
    background: var(--color-bg);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.value-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 40px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--color-accent);
}

.value-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--color-white);
    transition: var(--transition);
}

.value-card:hover .value-icon {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    transform: scale(1.1);
}

.value-card-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.value-card p {
    font-size: 0.875rem;
    line-height: 1.9;
    color: var(--color-text-light);
}

/* ---------- MESSAGE（メッセージ） ---------- */
.message-section {
    position: relative;
    background: linear-gradient(135deg, #1a3a5c 0%, var(--color-primary-dark) 100%);
    overflow: hidden;
}

.message-bg-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 30%, rgba(230,126,34,0.08), transparent 60%);
    pointer-events: none;
}

.message-content {
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.message-content p {
    font-size: 1.15rem;
    line-height: 2.2;
    color: rgba(255,255,255,0.9);
    margin-bottom: 28px;
}

.message-signature {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.message-position {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.15em;
}

.message-name {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-white);
    letter-spacing: 0.2em;
    font-weight: 600;
}

/* ---------- 会社情報テーブル ---------- */
.company-info-section {
    background: var(--color-white);
}

.company-table-wrap {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.about-table {
    width: 100%;
    border-collapse: collapse;
}

.about-table tr {
    border-bottom: 1px solid var(--color-border);
}

.about-table tr:last-child {
    border-bottom: none;
}

.about-table th,
.about-table td {
    padding: 18px 24px;
    font-size: 0.9rem;
    text-align: left;
    vertical-align: middle;
}

.about-table th {
    background: var(--color-primary-dark);
    color: var(--color-white);
    font-weight: 500;
    width: 140px;
    white-space: nowrap;
    text-align: center;
    vertical-align: middle;
}

.about-table td {
    line-height: 1.8;
}

/* ---------- 事業紹介 ---------- */
.business {
    background: var(--color-white);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.business-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
}

.business-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.business-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--color-white);
    transition: var(--transition);
}

.business-card:hover .business-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

.business-card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-primary-dark);
}

.business-card-desc {
    font-size: 0.875rem;
    line-height: 1.9;
    color: var(--color-text-light);
}

/* ---------- 拠点一覧 ---------- */
.locations {
    background: var(--color-bg);
}

.location-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 48px;
}

.location-card:last-child {
    margin-bottom: 0;
}

.location-card.reverse {
    direction: rtl;
}

.location-card.reverse > * {
    direction: ltr;
}

.location-image {
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

.location-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.location-card:hover .location-image img {
    transform: scale(1.05);
}

.location-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 10px rgba(230, 126, 34, 0.4);
}

.location-info {
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.location-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--color-primary-light);
    font-weight: 500;
    margin-bottom: 12px;
}

.location-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 16px;
    line-height: 1.5;
}

.location-desc {
    font-size: 0.9rem;
    line-height: 2;
    color: var(--color-text);
    margin-bottom: 20px;
}

.location-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--color-bg);
    border-radius: 50px;
    font-size: 0.78rem;
    color: var(--color-primary);
    font-weight: 500;
}

.location-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    width: fit-content;
    transition: var(--transition);
}

.location-link:hover {
    background: var(--color-primary-light);
    transform: translateX(4px);
}

/* ---------- 数字セクション ---------- */
.numbers {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    padding: 80px 0;
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.number-item {
    color: var(--color-white);
}

.number-value {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: var(--font-serif);
    line-height: 1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff, rgba(255,255,255,0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.number-label {
    font-size: 0.85rem;
    opacity: 0.8;
    letter-spacing: 0.1em;
}

/* ---------- お問い合わせ ---------- */
.contact {
    background: var(--color-white);
}

.contact-lead {
    text-align: center;
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 48px;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.contact-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--color-bg);
    border-radius: var(--radius);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.contact-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--color-white);
}

.contact-card h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.contact-card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary-light);
    font-size: 0.85rem;
    font-weight: 500;
}

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

.contact-card-tel {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary-dark);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-card-tel:hover {
    color: var(--color-accent);
}

/* ---------- フッター ---------- */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.8);
    padding: 64px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo-main {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.footer-logo-sub {
    display: block;
    font-size: 0.65rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.85rem;
    line-height: 1.9;
    color: rgba(255,255,255,0.6);
}

.footer-links h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    letter-spacing: 0.05em;
}

/* ---------- スクロールトップ ---------- */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 900;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--color-accent);
    transform: translateY(-4px);
}

/* ---------- スクロールアニメーション ---------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================
   レスポンシブデザイン
   ========================================== */

/* タブレット */
@media (max-width: 1024px) {
    .mission-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .philosophy-catchphrase {
        font-size: 2.2rem;
    }

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

    .location-card {
        grid-template-columns: 1fr;
    }

    .location-card.reverse {
        direction: ltr;
    }

    .location-image {
        min-height: 280px;
    }

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

/* モバイル */
@media (max-width: 768px) {
    .sp-only { display: inline; }

    /* ナビゲーション */
    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        box-shadow: -4px 0 20px rgba(0,0,0,0.15);
        transition: var(--transition);
        padding: 100px 32px 40px;
        z-index: 999;
    }

    .nav.open {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 16px 8px;
        color: var(--color-text);
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link::after { display: none; }

    .nav-link:hover,
    .nav-link.active {
        color: var(--color-primary);
    }

    /* オーバーレイ */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* ヒーロー */
    .hero {
        min-height: 600px;
    }

    .hero-catch {
        font-size: 0.85rem;
    }

    .hero-title {
        font-size: 2rem;
        letter-spacing: 0.08em;
    }

    .hero-desc {
        font-size: 0.9rem;
    }

    .btn {
        padding: 12px 28px;
        font-size: 0.85rem;
    }

    /* セクション */
    .section {
        padding: 72px 0;
    }

    .section-title {
        font-size: 1.7rem;
    }

    /* 事業紹介 */
    .business-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .business-card {
        padding: 30px 24px;
    }

    /* 拠点 */
    .location-info {
        padding: 32px 24px;
    }

    .location-title {
        font-size: 1.25rem;
    }

    .location-image {
        min-height: 220px;
    }

    /* 数字 */
    .numbers {
        padding: 60px 0;
    }

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

    .number-value {
        font-size: 2.5rem;
    }

    /* お問い合わせ */
    .contact-cards {
        grid-template-columns: 1fr;
    }

    /* フッター */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-brand {
        grid-column: auto;
    }

    /* 理念系セクション */
    .philosophy-catchphrase {
        font-size: 1.8rem;
    }

    .philosophy-text-block p,
    .vision-content p,
    .message-content p {
        font-size: 0.95rem;
    }

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

    .mission-card:last-child {
        grid-column: span 2;
        max-width: 320px;
        margin: 0 auto;
    }

    .value-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .value-card {
        padding: 28px 20px;
    }

    .mission-summary {
        padding: 28px 24px;
    }

    .mission-summary p {
        font-size: 0.95rem;
    }

    .about-table th {
        width: 110px;
        padding: 14px 16px;
        font-size: 0.8rem;
    }

    .about-table td {
        padding: 14px 16px;
        font-size: 0.85rem;
    }
}

/* 小型モバイル */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

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

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .container {
        padding: 0 16px;
    }

    .location-features {
        gap: 6px;
    }

    .philosophy-catchphrase {
        font-size: 1.5rem;
    }

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

    .mission-card:last-child {
        grid-column: auto;
        max-width: none;
    }

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

    .message-name {
        font-size: 1.2rem;
    }

    .feature-tag {
        padding: 4px 10px;
        font-size: 0.72rem;
    }
}