/* ========================================
   ケーススタディ V2 — シネマティック・エディトリアルデザイン
   ======================================== */

/* ---------- カスタムプロパティ ---------- */
:root {
    --wdv2-black: #050505;
    --wdv2-dark: #0a0a0a;
    --wdv2-gray-900: #111111;
    --wdv2-gray-800: #1a1a1a;
    --wdv2-gray-700: #2a2a2a;
    --wdv2-gray-400: #888888;
    --wdv2-gray-300: #aaaaaa;
    --wdv2-white: #f5f5f3;
    --wdv2-accent: #E63946;
    --wdv2-accent-dark: #c1303d;
    --wdv2-font-display: 'Orbitron', sans-serif;
    --wdv2-font-body: 'Noto Sans JP', sans-serif;
    --wdv2-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --wdv2-ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}

/* ---------- ページベース ---------- */
.wdv2 {
    background: #000000;
    color: var(--wdv2-white);
    min-height: 100vh;
    overflow-x: hidden;
    padding-top: 42px;
}

/* ヘッダー常時表示（ダーク背景固定） */
body:has(.wdv2) .header {
    background: rgba(8, 8, 13, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.3) !important;
}

body:has(.wdv2) .header.scrolled {
    background: rgba(8, 8, 13, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.3) !important;
}

/* ========================================
   パンくずリスト
   ======================================== */
/* .wdv2内のコンテナ幅をヘッダーナビと統一 */
.wdv2 .container {
    max-width: 1400px;
}

.wdv2-breadcrumb {
    padding: 1.75rem 0 0.5rem;
    background: rgba(8, 8, 13, 0.95);
    position: relative;
    z-index: 1;
}

.wdv2-breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.85rem;
}

.wdv2-breadcrumb-list li {
    color: rgba(255, 255, 255, 0.5);
    font-weight: 400;
}

.wdv2-breadcrumb-list li a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s ease;
}

.wdv2-breadcrumb-list li a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.wdv2-breadcrumb-sep {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.75rem;
}

.wdv2-breadcrumb-current {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
}

/* ========================================
   セクション1: タイトルセクション（既存ページ準拠）
   ======================================== */
.wdv2-header {
    position: relative;
    padding: 4rem 0 4rem;
    background: #0a0a0a;
}

.wdv2-header-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    position: relative;
    padding-left: 4.5rem;
}

/* 縦書きサイドラベル */
.wdv2-side-label {
    position: absolute;
    left: 0;
    top: 0;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    will-change: transform, opacity;
}

.wdv2-side-label-number {
    font-family: var(--wdv2-font-display);
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.3);
}

/* タイトルエリア */
.wdv2-title-area {
    flex: 1;
}

.wdv2-project-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #ffffff;
    line-height: 1.3;
    letter-spacing: 0.02em;
    margin-bottom: 1rem;
    font-family: var(--wdv2-font-body);
}

.wdv2-project-title .line {
    display: block;
    overflow: hidden;
    position: relative;
}

.wdv2-project-title .line-inner {
    display: block;
    will-change: transform;
}

/* カテゴリタグ */
.wdv2-project-categories {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
    will-change: transform, opacity;
}

.wdv2-category-tag {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
}

/* URLリンク */
.wdv2-project-url {
    margin-top: 1.5rem;
    will-change: transform, opacity;
}

.wdv2-site-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-family: monospace;
    letter-spacing: 0.03em;
    padding: 0.6rem 1.4rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
}

.wdv2-site-link:hover {
    color: var(--wdv2-accent);
    border-color: rgba(230, 57, 70, 0.4);
    background: rgba(230, 57, 70, 0.05);
}

.wdv2-arrow-icon {
    opacity: 0.4;
    transition: all 0.3s ease;
}

.wdv2-site-link:hover .wdv2-arrow-icon {
    opacity: 1;
    transform: translate(2px, -2px);
}

/* 日付エリア */
.wdv2-date-area {
    text-align: right;
    flex-shrink: 0;
    padding-left: 3rem;
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    will-change: transform, opacity;
}

.wdv2-date-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
    margin-bottom: 0.25rem;
    letter-spacing: 0.05em;
}

.wdv2-date-value {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-family: var(--wdv2-font-display);
}

/* ========================================
   セクション2: イントロ — エディトリアルレイアウト
   ======================================== */
.wdv2-intro {
    padding: clamp(3rem, 5vh, 4rem) 0 clamp(6rem, 12vh, 12rem);
    max-width: 1400px;
    margin: 0 auto;
    padding-left: var(--spacing-md, 2rem);
    padding-right: var(--spacing-md, 2rem);
}

.wdv2-intro-inner {
    max-width: 900px;
    position: relative;
}

/* Overviewラベル */
.wdv2-intro-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.wdv2-intro-label-line {
    display: block;
    width: 48px;
    height: 1px;
    background: var(--wdv2-accent);
}

.wdv2-intro-label-text {
    font-family: var(--wdv2-font-display);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--wdv2-accent);
}

/* メインテキスト */
.wdv2-intro-text {
    font-size: clamp(1.4rem, 2.8vw, 2.4rem);
    font-weight: 500;
    line-height: 2;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.02em;
    margin-bottom: 2.5rem;
}

.wdv2-intro-desc {
    font-size: 0.95rem;
    line-height: 2.2;
    color: rgba(255,255,255,0.5);
    max-width: 640px;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.wdv2-intro-text .wdv2-highlight {
    color: var(--wdv2-white);
    font-weight: 700;
    position: relative;
}

.wdv2-intro-text .wdv2-highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--wdv2-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s var(--wdv2-ease-out);
}

.wdv2-intro-text .wdv2-highlight.is-active::after {
    transform: scaleX(1);
}

/* メタ情報バー */
.wdv2-intro-meta {
    display: flex;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
}

.wdv2-intro-meta-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.wdv2-intro-meta-key {
    font-family: var(--wdv2-font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--wdv2-accent);
}

.wdv2-intro-meta-val {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    font-weight: 400;
}

.wdv2-intro-meta-divider {
    width: 1px;
    background: rgba(255,255,255,0.1);
    margin: 0 2rem;
    align-self: stretch;
}

/* ========================================
   セクション3: 全幅画像
   ======================================== */
.wdv2-fullbleed {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding-top: clamp(1.75rem, 4vh, 3.75rem);
}

.wdv2-fullbleed-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md, 2rem);
    position: relative;
}

.wdv2-fullbleed img {
    width: 100%;
    display: block;
    border-radius: 0;
    will-change: transform;
}

.wdv2-fullbleed-caption {
    display: block;
    text-align: right;
    margin-top: 0.75rem;
    font-family: var(--wdv2-font-display);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.35);
    text-transform: uppercase;
}

/* ========================================
   セクション4: 分割コンテンツ — テキスト＋画像
   ======================================== */
.wdv2-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 80vh;
    align-items: center;
}

.wdv2-split-text {
    padding: clamp(4rem, 8vh, 8rem) clamp(2rem, 5vw, 6rem);
}

.wdv2-split-label {
    font-family: var(--wdv2-font-display);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--wdv2-accent);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.wdv2-split-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--wdv2-accent);
}

.wdv2-split-heading {
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
}

.wdv2-split-body {
    font-size: 1rem;
    line-height: 2.1;
    color: rgba(255,255,255,0.65);
    max-width: 480px;
}

.wdv2-split-image {
    position: relative;
    height: 100%;
    min-height: 500px;
    overflow: hidden;
}

.wdv2-split-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    will-change: transform;
}

/* テキストのみ（画像なし）のレイアウト */
.wdv2-split--text-only {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: clamp(6rem, 12vh, 12rem) 2rem;
}

.wdv2-split--text-only .wdv2-split-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
}

.wdv2-split--text-only .wdv2-split-label {
    justify-content: center;
}

.wdv2-split--text-only .wdv2-split-body {
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   セクション5: デバイスモックアップ — 自動スクロール
   ======================================== */
.wdv2-devices {
    padding: clamp(6rem, 12vh, 12rem) 0;
    background: linear-gradient(180deg, var(--wdv2-black) 0%, #08081a 30%, #0c0c24 50%, #08081a 70%, var(--wdv2-black) 100%);
    position: relative;
    overflow: hidden;
}

.wdv2-devices::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230,57,70,0.06) 0%, transparent 70%);
    pointer-events: none;
}

.wdv2-devices-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 clamp(2rem, 4vw, 4rem);
    display: flex;
    gap: 3rem;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* デスクトップフレーム */
.wdv2-device-desktop {
    flex: 1 1 650px;
    max-width: 680px;
    will-change: transform, opacity;
}

.wdv2-device-chrome {
    background: var(--wdv2-gray-800);
    border-radius: 12px 12px 0 0;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wdv2-device-dots {
    display: flex;
    gap: 6px;
}

.wdv2-device-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.wdv2-device-dot--red { background: #ff5f56; }
.wdv2-device-dot--yellow { background: #ffbd2e; }
.wdv2-device-dot--green { background: #27ca40; }

.wdv2-device-url {
    flex: 1;
    margin-left: 8px;
    background: var(--wdv2-gray-700);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.7rem;
    color: var(--wdv2-gray-400);
    font-family: 'SF Mono', 'Fira Code', monospace;
    display: flex;
    align-items: center;
    gap: 6px;
}

.wdv2-device-url svg {
    width: 12px;
    height: 12px;
    opacity: 0.5;
}

.wdv2-device-screen {
    background: var(--wdv2-gray-900);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 16 / 10;
    box-shadow: 
        0 40px 100px rgba(0,0,0,0.5),
        0 0 0 1px rgba(255,255,255,0.04);
}

.wdv2-device-scroll {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    animation: wdv2-auto-scroll 25s ease-in-out infinite;
}

.wdv2-device-scroll img {
    width: 100%;
    display: block;
}

@keyframes wdv2-auto-scroll {
    0%, 5% { transform: translateY(0); }
    20%, 28% { transform: translateY(-20%); }
    43%, 51% { transform: translateY(-45%); }
    66%, 74% { transform: translateY(-70%); }
    89%, 100% { transform: translateY(0); }
}

/* モバイルフレーム */
.wdv2-device-mobile {
    flex: 0 0 280px;
    will-change: transform, opacity;
    animation: wdv2-float 8s ease-in-out infinite;
}

.wdv2-device-mobile-frame {
    border-radius: 28px;
    overflow: hidden;
    aspect-ratio: 9 / 19.5;
    position: relative;
}

.wdv2-device-mobile-notch {
    display: none;
}

.wdv2-device-mobile-screen {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.wdv2-device-mobile-screen video {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.15);
}

@keyframes wdv2-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ========================================
   セクション6: 制作のポイント（特徴グリッド）
   ======================================== */
.wdv2-features {
    padding: clamp(6rem, 12vh, 12rem) clamp(2rem, 5vw, 4rem);
    max-width: 1100px;
    margin: 0 auto;
    box-sizing: border-box;
    width: 100%;
}

.wdv2-features-header {
    text-align: center;
    margin-bottom: clamp(4rem, 8vh, 6rem);
}

.wdv2-features-label {
    font-family: var(--wdv2-font-display);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--wdv2-accent);
    margin-bottom: 1.5rem;
}

.wdv2-features-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.01em;
}

.wdv2-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    overflow: hidden;
    box-sizing: border-box;
    width: 100%;
}

.wdv2-feature-card {
    background: var(--wdv2-dark);
    padding: clamp(1.8rem, 3vw, 2.5rem);
    transition: background 0.5s ease;
    position: relative;
    overflow: hidden;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.wdv2-feature-card:hover {
    background: var(--wdv2-gray-900);
}

.wdv2-feature-top {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.wdv2-feature-number {
    font-family: var(--wdv2-font-display);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--wdv2-accent);
    opacity: 0.9;
    line-height: 1;
    letter-spacing: -0.05em;
}

.wdv2-feature-icon {
    width: 32px;
    height: 32px;
    color: var(--wdv2-accent);
    opacity: 0.9;
    flex-shrink: 0;
}

.wdv2-feature-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.wdv2-feature-desc {
    font-size: 0.85rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.5);
    word-break: break-word;
    overflow-wrap: break-word;
}

/* ========================================
   セクション6.5: モバイルショーケース — 動画
   ======================================== */
.wdv2-mobile-showcase {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    background: #1f1f24;
    display: flex;
    justify-content: center;
    padding: clamp(3rem, 6vh, 6rem) 0;
}

.wdv2-mobile-showcase video {
    width: 100%;
    max-width: 1280px;
    height: auto;
    display: block;
    border-radius: 12px;
}

/* ========================================
   セクション7: ギャラリー — 横スクロール
   ======================================== */
.wdv2-gallery {
    padding: clamp(4rem, 8vh, 8rem) 0;
    overflow: hidden;
    position: relative;
}

.wdv2-gallery-header {
    padding: 0 2rem;
    margin-bottom: 3rem;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.wdv2-gallery-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
}

.wdv2-gallery-count {
    font-family: var(--wdv2-font-display);
    font-size: 0.75rem;
    color: var(--wdv2-gray-400);
    letter-spacing: 0.15em;
}

.wdv2-gallery-track {
    display: flex;
    gap: 1.5rem;
    padding: 2rem calc(50vw - clamp(200px, 28vw, 350px));
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    cursor: grab;
    align-items: center;
}

.wdv2-gallery-track::-webkit-scrollbar {
    display: none;
}

.wdv2-gallery-track:active {
    cursor: grabbing;
}

.wdv2-gallery-item {
    flex: 0 0 clamp(340px, 50vw, 700px);
    scroll-snap-align: center;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: transparent;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                opacity 0.4s ease;
    transform: scale(0.88);
    opacity: 0.5;
    will-change: transform, opacity;
}

.wdv2-gallery-item.is-center {
    transform: scale(1.05);
    opacity: 1;
}

.wdv2-gallery-item.is-near {
    transform: scale(0.97);
    opacity: 0.8;
}

.wdv2-gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.8s var(--wdv2-ease-out);
}

.wdv2-gallery-item:hover img {
    transform: scale(1.05);
}

.wdv2-gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.6) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.wdv2-gallery-item:hover .wdv2-gallery-item-overlay {
    opacity: 1;
}

.wdv2-gallery-item-caption {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: white;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.5s var(--wdv2-ease-out);
}

.wdv2-gallery-item:hover .wdv2-gallery-item-caption {
    opacity: 1;
    transform: translateY(0);
}

/* ギャラリースクロールインジケーター */
.wdv2-gallery-progress {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.wdv2-gallery-progress-bar {
    flex: 1;
    height: 2px;
    background: rgba(255,255,255,0.08);
    border-radius: 1px;
    overflow: hidden;
}

.wdv2-gallery-progress-fill {
    height: 100%;
    width: 30%;
    background: var(--wdv2-accent);
    border-radius: 1px;
    transition: width 0.3s ease;
}

.wdv2-gallery-hint {
    font-family: var(--wdv2-font-display);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.3);
    text-transform: uppercase;
    white-space: nowrap;
}

/* ========================================
   セクション8: 実績数値
   ======================================== */
.wdv2-impact {
    padding: clamp(6rem, 12vh, 10rem) 2rem clamp(2rem, 4vh, 3rem);
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.wdv2-impact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.wdv2-impact-item {
    text-align: center;
    padding: 2rem 1rem;
}

.wdv2-impact-number {
    font-family: var(--wdv2-font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    color: var(--wdv2-white);
    line-height: 1;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--wdv2-white) 30%, var(--wdv2-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.wdv2-impact-label {
    font-size: 0.8rem;
    color: var(--wdv2-gray-400);
    letter-spacing: 0.05em;
    line-height: 1.6;
}

/* ========================================
   セクション9: プロジェクト概要テーブル
   ======================================== */
.wdv2-overview {
    padding: clamp(6rem, 12vh, 10rem) 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.wdv2-overview-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.wdv2-overview-line {
    flex: 1;
    height: 1px;
    background: rgba(255,255,255,0.1);
}

.wdv2-overview-label {
    font-family: var(--wdv2-font-display);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--wdv2-gray-400);
}

.wdv2-overview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

.wdv2-overview-item {
    padding: 2rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 2rem;
    align-items: baseline;
}

.wdv2-overview-item:nth-child(odd) {
    padding-right: 3rem;
    border-right: 1px solid rgba(255,255,255,0.06);
}

.wdv2-overview-item:nth-child(even) {
    padding-left: 3rem;
}

.wdv2-overview-key {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--wdv2-gray-400);
    letter-spacing: 0.03em;
}

.wdv2-overview-value {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.7;
}

.wdv2-overview-value a {
    color: var(--wdv2-accent);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.wdv2-overview-value a:hover {
    opacity: 0.7;
}

/* ========================================
   セクション10: サイトリンクボタン
   ======================================== */
.wdv2-visit {
    padding: clamp(1.5rem, 3vh, 2.5rem) clamp(2rem, 6vw, 8rem);
    text-align: center;
}

.wdv2-visit-btn {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--wdv2-white);
    text-decoration: none;
    padding: 1.2rem 3rem;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 60px;
    transition: all 0.5s var(--wdv2-ease-out);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.05em;
}

.wdv2-visit-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--wdv2-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--wdv2-ease-out);
    border-radius: 60px;
    z-index: -1;
}

.wdv2-visit-btn:hover {
    border-color: var(--wdv2-accent);
    transform: translateY(-3px);
    box-shadow: 0 20px 50px rgba(230,57,70,0.25);
}

.wdv2-visit-btn:hover::before {
    transform: scaleX(1);
}

.wdv2-visit-btn svg {
    transition: transform 0.5s var(--wdv2-ease-out);
}

.wdv2-visit-btn:hover svg {
    transform: translate(4px, -4px);
}

/* ========================================
   セクション11: お問い合わせ誘導（CTA）
   ======================================== */
.wdv2-cta {
    position: relative;
    padding: clamp(6rem, 12vh, 10rem) clamp(2rem, 6vw, 8rem);
    text-align: center;
    overflow: hidden;
}

.wdv2-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--wdv2-accent-dark) 0%, #8B1A25 50%, #4a0e15 100%);
    z-index: 0;
}

.wdv2-cta::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0,0,0,0.2) 0%, transparent 50%);
    z-index: 0;
}

.wdv2-cta-content {
    position: relative;
    z-index: 1;
}

.wdv2-cta-title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.2rem;
    line-height: 1.4;
    color: #ffffff;
}

.wdv2-cta-text {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.wdv2-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.2rem 3.5rem;
    background: #ffffff;
    color: var(--wdv2-accent-dark);
    text-decoration: none;
    border-radius: 60px;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    transition: all 0.4s var(--wdv2-ease-out);
    position: relative;
    overflow: hidden;
}

.wdv2-cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    transition: left 0.6s var(--wdv2-ease-out);
}

.wdv2-cta-btn:hover::before {
    left: 100%;
}

.wdv2-cta-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

/* ========================================
   セクション12: 次のプロジェクトへ
   ======================================== */
.wdv2-next {
    display: block;
    padding: clamp(4rem, 8vh, 6rem) clamp(2rem, 6vw, 8rem);
    background: var(--wdv2-dark);
    text-decoration: none;
    color: inherit;
    transition: background 0.5s ease;
    border-top: 1px solid rgba(255,255,255,0.04);
}

.wdv2-next:hover {
    background: var(--wdv2-gray-900);
}

.wdv2-next-inner {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.wdv2-next-label {
    font-family: var(--wdv2-font-display);
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--wdv2-gray-400);
    margin-bottom: 1rem;
}

.wdv2-next-title {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    transition: color 0.3s ease;
}

.wdv2-next:hover .wdv2-next-title {
    color: var(--wdv2-accent);
}

.wdv2-next-arrow {
    width: 60px;
    height: 60px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s var(--wdv2-ease-out);
    flex-shrink: 0;
}

.wdv2-next:hover .wdv2-next-arrow {
    background: var(--wdv2-accent);
    border-color: var(--wdv2-accent);
    transform: translateX(8px);
}

.wdv2-next-arrow svg {
    color: var(--wdv2-white);
    transition: transform 0.5s var(--wdv2-ease-out);
}

.wdv2-next:hover .wdv2-next-arrow svg {
    transform: translateX(3px);
}

/* （旧パンくずリストは上部に定義済みのため削除） */

/* ========================================
   レスポンシブ対応
   ======================================== */
@media (max-width: 1024px) {
    .wdv2-header-inner {
        padding-left: 3.5rem;
    }

    .wdv2-split {
        grid-template-columns: 1fr;
    }

    .wdv2-split-image {
        min-height: 400px;
        order: -1;
    }

    .wdv2-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .wdv2-impact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .wdv2-overview-grid {
        grid-template-columns: 1fr;
    }

    .wdv2-overview-item:nth-child(odd) {
        padding-right: 0;
        border-right: none;
    }

    .wdv2-overview-item:nth-child(even) {
        padding-left: 0;
    }

    .wdv2-devices-container {
        flex-direction: column;
        align-items: center;
    }

    .wdv2-device-mobile {
        margin-top: 0;
        flex: 0 0 auto;
        width: 180px;
    }
}

@media (max-width: 768px) {
    .wdv2 {
        padding-top: 60px;
    }

    .wdv2-breadcrumb {
        padding: 1.5rem 0 0.75rem;
    }

    .wdv2-breadcrumb-list {
        font-size: 0.75rem;
    }

    .wdv2-header {
        padding: 3rem 0 2rem;
    }

    .wdv2-header-inner {
        flex-direction: column;
        padding-left: 0;
    }

    .wdv2-side-label {
        position: relative;
        writing-mode: horizontal-tb;
        margin-bottom: 1.5rem;
        font-size: 0.7rem;
    }

    .wdv2-project-title {
        font-size: 1.8rem;
    }

    .wdv2-date-area {
        padding-left: 0;
        padding-top: 1.5rem;
        margin-top: 1.5rem;
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        text-align: left;
    }

    .wdv2-features-grid {
        grid-template-columns: 1fr;
    }

    .wdv2-impact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .wdv2-overview-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .wdv2-device-mobile {
        display: block;
        width: 200px;
        margin: 0 auto;
    }

    .wdv2-devices-container {
        flex-direction: column;
        gap: 3rem;
        padding: 0 1rem;
    }

    .wdv2-device-desktop {
        flex: none;
        max-width: 85%;
        width: 85%;
        margin: 0 auto;
    }

    .wdv2-gallery-item {
        flex: 0 0 95vw;
    }

    .wdv2-gallery-item.is-center {
        transform: scale(1.02);
    }

    .wdv2-gallery-track {
        gap: 1rem;
        padding: 1rem calc(50vw - 47.5vw);
    }

    .wdv2-next-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }

    .wdv2-intro-meta {
        flex-direction: column;
        gap: 1.5rem;
    }

    .wdv2-intro-meta-divider {
        width: 100%;
        height: 1px;
        margin: 0;
    }
}

@media (max-width: 480px) {
    .wdv2-project-title {
        font-size: 1.5rem;
    }

    .wdv2-intro-text {
        font-size: 1.15rem;
    }

    .wdv2-impact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .wdv2-impact-number {
        font-size: 2rem;
    }
}

/* ========================================
   ユーティリティアニメーション
   ======================================== */
.wdv2-reveal {
    opacity: 0;
    transform: translateY(40px);
    will-change: transform, opacity;
}

.wdv2-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ページ表示時のフェードイン */
.wdv2 {
    animation: wdv2-page-in 0.8s ease-out;
}

@keyframes wdv2-page-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========================================
   ライトボックス（画像クリック拡大）
   ======================================== */
.wdv2-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    cursor: zoom-out;
    padding: 3rem;
}

.wdv2-lightbox.is-active {
    opacity: 1;
    visibility: visible;
}

.wdv2-lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
    transform: scale(0.9);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.wdv2-lightbox.is-active .wdv2-lightbox-img {
    transform: scale(1);
}

.wdv2-lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.wdv2-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
}

/* デバイスモックアップをクリック可能に */
.wdv2-device-desktop,
.wdv2-device-mobile {
    cursor: zoom-in;
    transition: transform 0.3s ease;
}

.wdv2-device-desktop:hover,
.wdv2-device-mobile:hover {
    transform: scale(1.02);
}