/* ===========================================
   business.css - 事業内容ハブページ専用
   Version: 4.0
   v4.0: エンタープライズBtoB品質へ全面改善
   - 番号装飾を上品に抑制
   - カテゴリタグのデザイン洗練
   - より知的で重厚なレイアウト
=========================================== */

/* Page Base */
.ewrd-page-business {
    background: #fff;
}

/* ページヘッダーは common.css .ewrd-sub-hero に統合 */

/* 下部の繊細なライン */
.ewrd-business-hero::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.2), transparent);
    z-index: 1;
}

/* ===================================
   Intro — 余裕のある間
=================================== */
.ewrd-business-intro {
    padding: 112px 0 72px;
    text-align: center;
}

.ewrd-intro-lead {
    font-size: clamp(1.375rem, 2.2vw, 1.75rem);
    font-weight: 700;
    line-height: 1.6;
    color: var(--secondary-color, #1A2B48);
    margin-bottom: 36px;
    font-family: var(--font-serif, 'Noto Serif JP', serif);
    letter-spacing: 0.06em;
}

.ewrd-intro-desc {
    font-size: var(--fs-body, 0.9375rem);
    line-height: 2;
    color: var(--text-sub, #5A5A5A);
    max-width: 720px;
    margin: 0 auto;
    letter-spacing: 0.04em;
}

/* ===================================
   Section-based alternating layout
=================================== */
.ewrd-biz-section {
    padding: 112px 0;
    border-top: 1px solid var(--border-light, #E8EBF0);
}

.ewrd-biz-section--alt {
    background: var(--bg-light, #F7F8FA);
    position: relative;
    overflow: hidden;
}

.ewrd-biz-section--alt::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyBAMAAADsEZWCAAAAElBMVEUAAAAAAAAAAAAAAAAAAAAAAAAi4wAAAAV0Uk5TABAQEBDQlXkAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAA0SURBVDjLY2AYBaNgOAMmBgYWBij4DwIMUMAEBQxQwAAFTFDABAWMUMCIAsAKUMG/UTDkAQAHLALRSN0r2AAAAABJRU5ErkJggg==");
    background-repeat: repeat;
    opacity: 0.02;
    pointer-events: none;
    z-index: 0;
}

.ewrd-biz-section--alt > * {
    position: relative;
    z-index: 1;
}

.ewrd-biz-row {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    gap: 88px;
}

.ewrd-biz-row--reverse {
    flex-direction: row-reverse;
}

/* Visual (image) column */
.ewrd-biz-visual {
    flex: 1;
    overflow: hidden;
    border-radius: var(--radius-md, 4px);
}

.ewrd-biz-visual img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ewrd-biz-section:hover .ewrd-biz-visual img {
    transform: scale(1.03);
}

/* Content column */
.ewrd-biz-content {
    flex: 1;
}

/* 番号: 控えめな存在感 */
.ewrd-biz-num {
    display: block;
    font-family: var(--font-english, 'Poppins', sans-serif);
    font-size: 3rem;
    font-weight: 300;
    line-height: 1;
    color: var(--border-medium, #D0D5DD);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

/* カテゴリタグ: 繊細なラベル */
.ewrd-biz-cat {
    display: inline-block;
    font-family: var(--font-english, 'Poppins', sans-serif);
    font-size: 0.625rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent-color, #B8942E);
    border: 1px solid var(--accent-color, #B8942E);
    padding: 4px 14px;
    margin-bottom: 20px;
    background: transparent;
}

.ewrd-biz-title {
    font-size: clamp(1.375rem, 2.2vw, 1.875rem);
    font-weight: 700;
    line-height: 1.5;
    color: var(--secondary-color, #1A2B48);
    margin-bottom: 24px;
    font-family: var(--font-serif, 'Noto Serif JP', serif);
    letter-spacing: 0.06em;
}

.ewrd-biz-desc {
    font-size: var(--fs-body, 0.9375rem);
    line-height: 2;
    color: var(--text-sub, #5A5A5A);
    margin-bottom: 36px;
    letter-spacing: 0.04em;
}

/* 詳細リンク: ミニマル・端正 */
.ewrd-biz-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--secondary-color, #1A2B48);
    text-decoration: none;
    letter-spacing: 0.08em;
    font-family: var(--font-english, 'Poppins', sans-serif);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.ewrd-biz-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-color, #B8942E);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ewrd-biz-link:hover {
    color: var(--primary-color, #1B5E20);
}

.ewrd-biz-link:hover::after {
    transform: scaleX(0);
    transform-origin: right;
}

.ewrd-biz-link span {
    font-size: 1em;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ewrd-biz-link:hover span {
    transform: translateX(6px);
}

/* ===================================
   レスポンシブ
=================================== */
@media (max-width: 1000px) {
    .ewrd-biz-row {
        flex-direction: column;
        gap: 48px;
        padding: 0 24px;
    }

    .ewrd-biz-row--reverse {
        flex-direction: column;
    }

    .ewrd-biz-section {
        padding: 80px 0;
    }

    .ewrd-biz-visual {
        max-width: 560px;
    }

    .ewrd-biz-num {
        font-size: 2.5rem;
    }
}

@media (max-width: 650px) {
    .ewrd-business-hero {
        padding: 140px 0 72px;
    }

    .ewrd-business-hero .ewrd-hero-title {
        font-size: 2rem;
    }

    .ewrd-biz-section {
        padding: 64px 0;
    }

    .ewrd-biz-row {
        gap: 32px;
        padding: 0 20px;
    }

    .ewrd-biz-num {
        font-size: 2rem;
        margin-bottom: 14px;
    }

    .ewrd-biz-title {
        font-size: 1.25rem;
    }

    .ewrd-biz-desc {
        margin-bottom: 28px;
    }
}