/* =============================================
   KIT renewal07 – 仕様書準拠デザイン
   コンセプト: 信頼と透明性 × 地域のITコンサルタント
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ── CSS カスタムプロパティ ── */
:root {
    --color-main:    #004098;   /* コーポレートブルー */
    --color-main-dk: #002d6e;   /* ホバー時など暗め */
    --color-main-lt: #e8f0fa;   /* 薄いブルー背景 */
    --color-base:    #F8F9FA;   /* オフホワイト */
    --color-text:    #333333;   /* ダークグレー */
    --color-text-soft: #5c6a7a;
    --color-accent:  #E67E22;   /* オレンジ（CTA） */
    --color-accent-dk: #c96a14;
    --color-white:   #ffffff;
    --color-border:  #dee3ea;
    --color-card-bg: #ffffff;
    --shadow-card:   0 2px 16px rgba(0,64,152,0.07);
    --shadow-card-h: 0 6px 28px rgba(0,64,152,0.13);
    --radius-card:   12px;
    --radius-btn:    6px;
    --max-w:         1140px;
    --header-h:      72px;
    --transition:    0.3s ease;
}

/* ── リセット ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background-color: var(--color-base);
    color: var(--color-text);
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Layout ── */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── フェードインアニメーション ── */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}
.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* =============================================
   ヘッダー
   ============================================= */
#site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-h);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo img {
    height: 36px;
    width: auto;
}

/* ── PCナビ ── */
.nav-pc {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-pc a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding-bottom: 2px;
    transition: color var(--transition);
}
.nav-pc a::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 0; height: 2px;
    background: var(--color-main);
    transition: width var(--transition);
}
.nav-pc a:hover { color: var(--color-main); }
.nav-pc a:hover::after { width: 100%; }

/* コンタクトボタン */
.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.btn-contact:hover {
    background: var(--color-accent-dk);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(230,126,34,0.35);
}

/* ── ハンバーガーメニュー（SP） ── */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
}
.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger.is-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── SPメニュードロワー ── */
.nav-sp {
    display: none;
    flex-direction: column;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-white);
    padding: 32px 24px;
    gap: 24px;
    z-index: 999;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}
.nav-sp.is-open {
    display: flex;
    transform: translateX(0);
}
.nav-sp a {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}
.nav-sp .btn-contact { margin-top: 8px; justify-content: center; padding: 14px; font-size: 1rem; }

/* =============================================
   ヒーローセクション
   ============================================= */
#hero {
    position: relative;
    min-height: calc(100svh - var(--header-h));
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
}
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        rgba(0,26,65,0.72) 0%,
        rgba(0,40,100,0.45) 55%,
        rgba(0,40,100,0.10) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 680px;
    color: var(--color-white);
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    margin-bottom: 20px;
    padding: 4px 12px;
    border: 1px solid rgba(255,255,255,0.35);
    border-radius: 100px;
}

.hero-content h1 {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 24px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.hero-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.88);
    margin-bottom: 36px;
    max-width: 520px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--color-main);
    color: var(--color-white);
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 0.95rem;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover {
    background: var(--color-main-dk);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,64,152,0.35);
}

/* =============================================
   セクション共通
   ============================================= */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-main);
    margin-bottom: 12px;
}
.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}
.section-header p {
    font-size: 0.95rem;
    color: var(--color-text-soft);
    max-width: 560px;
    margin: 0 auto;
}

/* =============================================
   数値実績 Numbers
   ============================================= */
#numbers {
    padding: 88px 0;
    background: var(--color-main);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.number-card {
    text-align: center;
    color: var(--color-white);
    padding: 24px 16px;
}

.number-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

.number-val {
    display: block;
    font-size: clamp(2.4rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.number-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.78);
    line-height: 1.4;
}

/* =============================================
   事業内容 Services
   ============================================= */
#services {
    padding: 96px 0;
    background: var(--color-base);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-card-bg);
    border-radius: var(--radius-card);
    padding: 36px 28px;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-h);
}

.service-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--color-main-lt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.service-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
}

.service-card p {
    font-size: 0.875rem;
    color: var(--color-text-soft);
    line-height: 1.75;
    flex: 1;
}

.service-card .link-more {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-main);
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
    transition: gap var(--transition);
}
.service-card:hover .link-more { gap: 8px; }

/* =============================================
   解決できる課題 Solutions
   ============================================= */
#solutions {
    padding: 96px 0;
    background: var(--color-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.solution-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    border-radius: var(--radius-card);
    border: 1px solid var(--color-border);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.solution-item:hover {
    border-color: var(--color-main);
    box-shadow: 0 4px 20px rgba(0,64,152,0.08);
}

.solution-q {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--color-main);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
}

.solution-body h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}
.solution-body p {
    font-size: 0.85rem;
    color: var(--color-text-soft);
    line-height: 1.7;
}

/* =============================================
   更新情報 News
   ============================================= */
#news {
    padding: 96px 0;
    background: var(--color-base);
}

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

.news-item {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition);
}
.news-item:first-child { border-top: 1px solid var(--color-border); }
.news-item:hover { background: rgba(0,64,152,0.03); padding-left: 8px; }

.news-date {
    font-size: 0.825rem;
    color: var(--color-text-soft);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 90px;
}

.news-category {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-main);
    background: var(--color-main-lt);
    padding: 2px 10px;
    border-radius: 100px;
    white-space: nowrap;
    flex-shrink: 0;
}

.news-title {
    font-size: 0.9rem;
    color: var(--color-text);
    flex: 1;
    transition: color var(--transition);
}
.news-item:hover .news-title { color: var(--color-main); }

/* =============================================
   CTAセクション
   ============================================= */
#cta {
    padding: 88px 0;
    background: var(--color-main-lt);
}

.cta-inner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}
.cta-inner p {
    font-size: 0.95rem;
    color: var(--color-text-soft);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--color-white);
    color: var(--color-main);
    border: 2px solid var(--color-main);
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition);
}
.btn-cta-phone:hover {
    background: var(--color-main);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,64,152,0.25);
}

.btn-cta-form {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition);
}
.btn-cta-form:hover {
    background: var(--color-accent-dk);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230,126,34,0.35);
}

.cta-tel-note {
    font-size: 0.75rem;
    color: var(--color-text-soft);
    margin-top: 16px;
}

/* =============================================
   フッター
   ============================================= */
#site-footer {
    background: #0d1f3c;
    color: rgba(255,255,255,0.8);
    padding: 64px 0 32px;
}

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

.footer-brand img {
    height: 32px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}
.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
}

.footer-col h4 {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
}
.footer-col ul li + li { margin-top: 10px; }
.footer-col ul li a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.75);
    transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--color-white); }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 28px;
    font-size: 0.78rem;
    color: rgba(255,255,255,0.4);
}

/* =============================================
   レスポンシブ
   ============================================= */
@media (max-width: 1024px) {
    .numbers-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    :root { --header-h: 64px; }

    /* ヘッダー */
    .nav-pc { display: none; }
    .hamburger { display: flex; }
    .site-logo img { height: 30px; }

    /* ヒーロー */
    #hero { min-height: 80svh; }
    .hero-content h1 { font-size: clamp(1.7rem, 6vw, 2.4rem); }
    .hero-bg::after {
        background: linear-gradient(to bottom,
            rgba(0,26,65,0.65) 0%,
            rgba(0,40,100,0.50) 100%
        );
    }

    /* numbers */
    .numbers-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

    /* services */
    .services-grid { grid-template-columns: 1fr; }

    /* solutions */
    .solutions-grid { grid-template-columns: 1fr; }

    /* footer */
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
    .numbers-grid { grid-template-columns: repeat(2, 1fr); }
    .cta-buttons { flex-direction: column; align-items: stretch; }
    .btn-cta-phone, .btn-cta-form { justify-content: center; }
}