/* ============================================
   案例详情页样式 - 参考明道云案例页
   单卡片内嵌 + 绿色概览 + 轮播展示
   ============================================ */

:root {
    --primary-dark: #0F2B5B;
    --primary: #1E40AF;
    --primary-light: #2563EB;
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;

    --accent: #10B981;
    --accent-50: #ECFDF5;
    --accent-100: #D1FAE5;

    --warning: #F59E0B;
    --warning-50: #FFFBEB;

    --purple: #8B5CF6;
    --purple-50: #F5F3FF;

    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #9CA3AF;
    --text-white: #FFFFFF;

    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;
    --bg-dark: #0F172A;

    --border-light: #E5E7EB;
    --border-lighter: #F3F4F6;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);

    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;

    --header-height: 64px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-primary);
    background: var(--bg-light);
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}



/* ========== Hero Banner ========== */
.hero-banner {
    position: relative;
    height: 420px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: #1a1a2e;
}

.hero-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1;
}

.hero-overlay { display: none; }

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 32px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hero-left {
    max-width: 640px;
    flex: 1;
}

.hero-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
}

.hero-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: 20px;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

.hero-contributor {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

.hero-right {
    display: flex;
    align-items: center;
    margin-left: 32px;
}

.hero-logo-card {
    width: 120px;
    height: 120px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-shadow: var(--shadow-xl);
}

.hero-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* ========== 主内容区 ========== */
.detail-main {
    margin: 0;
    position: relative;
}

/* --- 案例概览 (4格白色卡片) --- */
.case-overview {
    background: var(--bg-light);
    padding: 48px 0;
    margin-top: -32px;
    position: relative;
    z-index: 3;
}

.overview-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.overview-item {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.25s ease;
}

.overview-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.overview-item .ov-label {
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
    margin-bottom: 8px;
}

.overview-item .ov-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- 内容段落区域 --- */
.case-section {
    padding: 80px 0;
    background: var(--bg-white);
    position: relative;
}

.case-section.no-data {
    display: none;
}

.case-section.challenge-section {
    background: var(--bg-white);
}

.case-section.solution-section {
    background: var(--bg-light);
}

.case-section.screenshot-section {
    background: var(--bg-light);
    padding: 24px 0 60px;
}

.case-section.results-section {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--primary-50) 100%);
}

.case-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.case-section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.case-section-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.case-section-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.case-section-icon svg {
    width: 20px;
    height: 20px;
}

.case-section-icon.challenge {
    background: var(--warning-50);
    color: var(--warning);
}

.case-section-icon.solution {
    background: var(--primary-50);
    color: var(--primary-light);
}

.case-section-icon.benefit {
    background: var(--accent-50);
    color: var(--accent);
}

.case-section-icon.screenshot {
    background: var(--purple-50);
    color: var(--purple);
}

.case-section-body p {
    margin-bottom: 10px;
}

.case-section-body p:last-child {
    margin-bottom: 0;
}

/* --- 子标题卡片 --- */
.sub-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.sub-items-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.sub-items-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.sub-item {
    padding: 28px;
    background: var(--bg-light);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary-light);
    transition: all 0.25s ease;
}

.sub-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.sub-item-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.case-section.challenge-section .sub-item {
    background: var(--bg-light);
    border-left: 4px solid var(--warning);
}

.sub-item-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* --- 转型成效 --- */
.results-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.metric-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1.5px solid transparent;
    background-image: linear-gradient(var(--bg-white), var(--bg-white)),
                      linear-gradient(135deg, var(--primary-light), var(--primary), var(--primary-dark));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(30, 64, 175, 0.18);
}

.metric-card:hover::before {
    opacity: 1;
}

.metric-number {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.metric-unit {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
    margin-bottom: 12px;
}

.metric-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
}

.results-highlights {
    padding-top: 12px;
    border-top: none;
}

.highlights-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 28px;
}

.highlights-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    max-width: 800px;
}

/* 竖线 */
.highlights-list::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 28px;
    bottom: 28px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-light), var(--primary-50));
    border-radius: 1px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    position: relative;
    padding-bottom: 32px;
}

.highlight-item:last-child {
    padding-bottom: 0;
}

.highlight-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    color: var(--text-white);
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.highlight-content {
    padding-top: 6px;
    flex: 1;
}

.highlight-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.5;
}

.highlight-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* --- 应用展示轮播 --- */
.screenshot-carousel {
    position: relative;
    margin-top: 16px;
}

.carousel-wrapper {
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.carousel-track {
    display: flex;
    transition: transform 0.35s ease;
    will-change: transform;
}

.carousel-slide {
    flex: 0 0 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
}

.carousel-slide img {
    max-width: 100%;
    max-height: 500px;
    height: auto;
    display: block;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all 0.2s;
    z-index: 10;
}

.carousel-btn:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.carousel-btn:hover svg {
    color: var(--primary-light);
}

.carousel-btn svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.carousel-btn.prev { left: 16px; }
.carousel-btn.next { right: 16px; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-light);
    cursor: pointer;
    transition: all 0.2s;
}

.carousel-dot:hover { background: var(--text-tertiary); }
.carousel-dot.active {
    background: var(--primary-light);
    width: 24px;
    border-radius: 4px;
}

/* ========== 右侧悬浮微信分享按钮 ========== */
.float-share-btn {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #07C160;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(7, 193, 96, 0.4);
    transition: all 0.3s;
    z-index: 99;
}

.float-share-btn:hover {
    background: #06AD56;
    transform: translateY(-50%) scale(1.1);
}

.float-share-btn img {
    width: 26px;
    height: 26px;
    display: block;
}

/* ========== 微信分享弹窗 ========== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 380px;
    width: 90%;
    position: relative;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-tertiary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.modal-close:hover { background: var(--border-lighter); }

.modal-header {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.qrcode-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.qrcode-wrapper canvas {
    border-radius: var(--radius);
    border: 8px solid var(--bg-light);
}

.modal-title {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    word-break: break-all;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-lighter);
    font-size: 13px;
    color: var(--text-tertiary);
}

.wechat-icon {
    width: 20px;
    height: 20px;
    color: #07C160;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .hero-banner { height: 340px; }
    .hero-content { flex-direction: column; align-items: flex-start; gap: 20px; }
    .hero-title { font-size: 26px; }
    .hero-subtitle { font-size: 15px; }
    .hero-right { margin-left: 0; }
    .hero-logo-card { width: 80px; height: 80px; padding: 12px; }

    .case-section { padding: 56px 0; }
    .case-overview { padding: 36px 0; margin-top: -24px; }
    .overview-grid { grid-template-columns: repeat(2, 1fr); }
    .sub-items, .sub-items-3, .sub-items-4 { grid-template-columns: 1fr; }
    .sub-item { padding: 20px; }
    .results-metrics { grid-template-columns: 1fr; gap: 16px; }
    .metric-card { padding: 28px 24px; }
    .metric-number { font-size: 40px; }
    .achievement-item { gap: 16px; padding-bottom: 28px; }
    .highlight-number { width: 36px; height: 36px; font-size: 16px; }

    .container { padding: 0 16px; }
}

@media (max-width: 480px) {
    .hero-banner { height: 260px; }
    .hero-title { font-size: 22px; }
    .hero-subtitle { font-size: 14px; margin-bottom: 12px; }
    .hero-logo-card { width: 64px; height: 64px; padding: 10px; }
    .hero-content { padding: 0 16px; }

    .case-section { padding: 40px 0; }
    .case-overview { padding: 32px 0; margin-top: -24px; }
    .overview-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .overview-item { padding: 16px 12px; }
    .overview-item .ov-value { font-size: 16px; }
    .case-section-title { font-size: 22px; }
    .case-section-body { font-size: 15px; }
    .results-metrics { gap: 10px; }
    .metric-card { padding: 20px 16px; }
    .metric-number { font-size: 36px; }
    .metric-unit { font-size: 13px; }
    .metric-desc { font-size: 12.5px; }
    .highlight-number { width: 32px; height: 32px; font-size: 14px; }

    .float-share-btn { display: none; }
    .container { padding: 0 16px; }

    .carousel-btn { width: 40px; height: 40px; }
    .carousel-btn.prev { left: 8px; }
    .carousel-btn.next { right: 8px; }
    .carousel-slide img { max-height: 280px; }

    .modal-content { padding: 20px; }
    .qrcode-wrapper canvas { width: 140px !important; height: 140px !important; }
}