/* ============================================
   CSS Variables & Reset — Dark Tech Theme
   ============================================ */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-bg: rgba(59, 130, 246, 0.1);
    --primary-glow: rgba(59, 130, 246, 0.4);
    --accent: #f97316;
    --accent-dark: #ea580c;
    --accent-light: #fb923c;
    --accent-bg: rgba(249, 115, 22, 0.1);
    --accent-glow: rgba(249, 115, 22, 0.4);
    --green: #22c55e;
    --green-bg: rgba(34, 197, 94, 0.1);
    --cyan: #06b6d4;
    --dark: #020617;
    --dark-card: #0f172a;
    --dark-card-hover: #1e293b;
    --dark-elevated: #1e293b;
    --text: #e2e8f0;
    --text-light: #94a3b8;
    --text-lighter: #64748b;
    --text-bright: #f8fafc;
    --bg: #020617;
    --bg-soft: #0f172a;
    --bg-muted: #1e293b;
    --border: rgba(59, 130, 246, 0.15);
    --border-strong: rgba(59, 130, 246, 0.3);
    --border-subtle: rgba(148, 163, 184, 0.08);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 40px rgba(0,0,0,0.5);
    --shadow-xl: 0 25px 60px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

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

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Scanline overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.015) 2px,
        rgba(0, 0, 0, 0.015) 4px
    );
    pointer-events: none;
    z-index: 9999;
}

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

.hide-mobile {
    display: inline;
}

/* ============================================
   Buttons — Tech Style
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    gap: 8px;
    position: relative;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    box-shadow: 0 4px 20px var(--primary-glow), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-outline {
    background: transparent;
    color: var(--primary-light);
    border: 1px solid var(--border-strong);
}

.btn-outline:hover {
    background: var(--primary-bg);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Navigation — Glass Dark
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(2, 6, 23, 0.95);
    border-bottom-color: var(--border);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-bright);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    font-family: var(--font-mono);
    background: linear-gradient(135deg, #fb923c 0%, #f97316 36%, #3b82f6 72%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.nav-links a {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    color: var(--text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-mono);
    transition: var(--transition);
    letter-spacing: 0.02em;
}

.nav-links a:hover {
    color: var(--primary-light);
    background: var(--primary-bg);
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
    color: #fff !important;
    box-shadow: 0 2px 12px var(--primary-glow);
    font-weight: 600 !important;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--primary-glow) !important;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-light);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
    background: var(--primary-light);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    background: var(--primary-light);
}

/* ============================================
   Hero — Dark Futuristic
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
    background: var(--bg);
}

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

#particleCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero-glow {
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(59, 130, 246, 0.12) 0%, rgba(249, 115, 22, 0.04) 40%, transparent 70%);
    pointer-events: none;
    animation: glow-pulse 8s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.7; transform: translateX(-50%) scale(1); }
    50% { opacity: 1; transform: translateX(-50%) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 32px;
    font-family: var(--font-mono);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 10px var(--accent-glow); }
    50% { opacity: 0.7; transform: scale(1.5); box-shadow: 0 0 20px var(--accent-glow); }
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-bright);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 50%, var(--primary-light) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 4s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-desc {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 32px 48px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-glow);
    transition: var(--transition);
}

.hero-stats:hover {
    border-color: var(--primary);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.2);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.stat-suffix {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-lighter);
    margin-top: 4px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent, var(--border-strong), transparent);
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 100px 0;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

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

.section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--primary-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--primary-light);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    color: var(--text-lighter);
}

/* ============================================
   About — Terminal Cards
   ============================================ */
.about {
    background: var(--bg-soft);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-card {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
    border-color: var(--primary);
}

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

.about-card-main {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    padding: 40px;
}

.about-card-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.about-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 12px;
    font-family: var(--font-mono);
}

.about-card h3::before {
    content: '';
}

.about-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   Cooperation — Code Editor Cards
   ============================================ */
.coop-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.coop-card {
    position: relative;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0;
    transition: var(--transition);
    overflow: hidden;
}

.coop-grid:has(.coop-card:hover) .coop-card:not(:hover) {
    filter: none;
    border-color: var(--border);
    box-shadow: none;
}

.coop-card:hover {
    z-index: 1;
    transform: translateY(-4px);
    background: var(--dark-card);
    filter: none;
    box-shadow: var(--shadow-lg), 0 0 38px rgba(59, 130, 246, 0.34);
    border-color: var(--primary-light);
}

/* Terminal window chrome */
.coop-card::before {
    content: '';
    display: block;
    height: 36px;
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.14) 0%, rgba(30, 41, 59, 0.84) 100%);
    border-bottom: 1px solid var(--border);
    position: relative;
}

.coop-card::after {
    content: '● ● ●';
    position: absolute;
    top: 10px;
    left: 16px;
    font-size: 10px;
    letter-spacing: 4px;
    color: var(--text-lighter);
}

.coop-card > *:not(.coop-badge) {
    position: relative;
}

.coop-card > .coop-card-header,
.coop-card > .coop-name,
.coop-card > .coop-desc,
.coop-card > .coop-features,
.coop-card > .coop-tag-row {
    margin-left: 28px;
    margin-right: 28px;
}

.coop-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-top: 20px;
}

.coop-icon {
    font-size: 28px;
}

.coop-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: var(--font-mono);
}

.coop-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 12px;
    font-family: var(--font-mono);
}

.coop-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.coop-features {
    list-style: none;
    margin-bottom: 24px;
}

.coop-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text);
    font-family: var(--font-mono);
}

.check {
    color: var(--green);
    font-weight: 700;
    font-family: var(--font-mono);
}

.coop-tag-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding-bottom: 24px;
}

.coop-tag {
    padding: 3px 10px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 11px;
    color: var(--primary-light);
    font-weight: 500;
    font-family: var(--font-mono);
    transition: var(--transition);
}

.coop-tag:hover {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.coop-card-featured {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.1);
}

.coop-card-featured::before {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.14) 0%, rgba(30, 41, 59, 0.84) 100%);
}

.coop-badge {
    position: absolute;
    top: 6px;
    right: 16px;
    padding: 3px 12px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 100px;
    font-family: var(--font-mono);
    z-index: 2;
    letter-spacing: 0.05em;
}

/* Workflow — Pipeline Style */
.workflow {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.workflow:hover {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
}

.workflow::before {
    content: '';
    position: absolute;
    top: 12px;
    right: 20px;
    font-size: 11px;
    color: var(--green);
    font-family: var(--font-mono);
    opacity: 0.5;
}

.workflow-title {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 40px;
    font-family: var(--font-mono);
}

.workflow-title::before {
    content: '';
}

.workflow-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.workflow-step {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: default;
}

.workflow-step:hover {
    background: transparent;
    box-shadow: none;
}

.workflow-step:hover .step-number {
    opacity: 0.25;
}

.step-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.25;
    line-height: 1;
    font-family: var(--font-mono);
}

.step-content h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 4px;
    font-family: var(--font-mono);
}

.step-content p {
    font-size: 13px;
    color: var(--text-lighter);
    font-family: var(--font-mono);
}

.step-arrow {
    font-size: 20px;
    color: var(--primary);
    margin: 0 24px;
    padding-top: 8px;
    opacity: 0.5;
    font-family: var(--font-mono);
}

@media (min-width: 1025px) {
    .workflow {
        padding: 40px 30px 36px;
    }

    .workflow-title {
        margin-bottom: 28px;
    }

    .workflow-steps {
        align-items: flex-start;
        justify-content: space-between;
        gap: 8px;
    }

    .workflow-step {
        display: grid;
        grid-template-columns: auto minmax(108px, 1fr) auto;
        align-items: start;
        column-gap: 12px;
        padding: 8px 6px;
        flex: 1;
    }

    .step-number,
    .step-arrow {
        align-self: start;
        margin-top: 10px;
    }

    .step-arrow {
        padding-top: 0;
        margin-left: 4px;
        margin-right: 8px;
    }
}

/* ============================================
   Cases — Dark Cards with Glow
   ============================================ */
.cases {
    background: var(--bg);
}

.cases-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.case-card {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.case-card-link {
    color: inherit;
    text-decoration: none;
    display: block;
}

.case-card-link:hover .case-source {
    color: var(--text-lighter);
}

.case-card:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border);
}

.case-card-large {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: calc((100% - 24px) / 2) 1fr;
    gap: 24px;
}

.case-card-large .case-image {
    aspect-ratio: 16 / 9;
    min-height: 0;
}

.case-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: 0;
    position: relative;
    opacity: 0.85;
    overflow: hidden;
}

.case-type-icon {
    font-size: 56px;
    filter: drop-shadow(0 4px 16px rgba(0,0,0,0.3));
}

.dynamic-case-image-uploaded {
    background: rgba(2, 6, 23, 0.6);
    opacity: 1;
}

.dynamic-case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.dynamic-case-image-0 {
    background: linear-gradient(135deg, #0c2d6b 0%, #1e5cb3 100%);
}

.dynamic-case-image-1 {
    background: linear-gradient(135deg, #0a2a5c 0%, #164a94 100%);
}

.dynamic-case-image-2 {
    background: linear-gradient(135deg, #0f3460 0%, #2563eb 100%);
}

.dynamic-case-image-3 {
    background: linear-gradient(135deg, #082f49 0%, #0369a1 100%);
}

.case-info {
    padding: 28px;
}

.case-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--primary-bg);
    border: 1px solid var(--border);
    color: var(--primary-light);
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    margin-bottom: 12px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 10px;
    font-family: var(--font-mono);
}

.case-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.case-card-link .case-info p {
    min-height: 50px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-tech {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.case-tech span {
    padding: 3px 10px;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 11px;
    color: var(--cyan);
    font-weight: 500;
    font-family: var(--font-mono);
    transition: var(--transition);
}

.case-tech span:hover {
    border-color: var(--cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

.case-source {
    display: block;
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-lighter);
    font-family: var(--font-mono);
    transition: var(--transition);
}

/* ============================================
   Case Detail Page
   ============================================ */
.case-detail-hero {
    position: relative;
    padding: 128px 0 72px;
    background: var(--bg);
    overflow: hidden;
}

.case-detail-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at center, black 28%, transparent 76%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 28%, transparent 76%);
}

.case-detail-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    gap: 44px;
    align-items: center;
}

.case-detail-copy {
    min-width: 0;
}

.case-detail-back {
    display: inline-flex;
    margin-bottom: 24px;
    color: var(--primary-light);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono);
}

.case-detail-back:hover {
    color: var(--accent-light);
}

.case-detail-copy h1 {
    margin: 14px 0 18px;
    color: var(--text-bright);
    font-size: 48px;
    line-height: 1.16;
    font-weight: 800;
    letter-spacing: 0;
}

.case-detail-copy p {
    max-width: 680px;
    color: var(--text-light);
    font-size: 17px;
    line-height: 1.85;
}

.case-detail-actions {
    display: flex;
    gap: 14px;
    margin-top: 32px;
}

.case-detail-source {
    display: block;
    margin-top: 22px;
    color: var(--text-lighter);
    font-size: 12px;
    font-family: var(--font-mono);
}

.case-detail-visual {
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 38px rgba(59, 130, 246, 0.18);
}

.case-detail-visual img {
    width: 100%;
    height: 100%;
    min-height: 360px;
    object-fit: cover;
    display: block;
}

.case-detail-visual-icon {
    font-size: 92px;
    filter: drop-shadow(0 10px 28px rgba(0,0,0,0.35));
}

.case-detail-section {
    background: var(--bg-soft);
}

.case-detail-meta {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.case-detail-meta-item {
    min-width: 0;
    padding: 22px;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.case-detail-meta-item span {
    display: block;
    margin-bottom: 8px;
    color: var(--text-lighter);
    font-size: 12px;
    font-family: var(--font-mono);
}

.case-detail-meta-item strong {
    display: block;
    color: var(--text-bright);
    font-size: 16px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.case-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.case-detail-panel {
    min-width: 0;
    padding: 30px;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.case-detail-panel h2 {
    margin-bottom: 18px;
    color: var(--text-bright);
    font-size: 20px;
    font-weight: 700;
    font-family: var(--font-mono);
    letter-spacing: 0;
}

.case-detail-panel p,
.case-detail-panel li {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

.case-detail-panel ul {
    display: grid;
    gap: 12px;
    padding-left: 20px;
}

.case-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.case-detail-tags span {
    padding: 7px 12px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--primary-light);
    font-size: 12px;
    font-family: var(--font-mono);
}

.case-detail-panel-accent {
    border-color: var(--border);
    box-shadow: none;
}

.case-detail-panel-accent .btn {
    margin-top: 24px;
}

.case-detail-empty {
    min-height: calc(100vh - 240px);
    padding: 150px 24px 80px;
    text-align: center;
}

.case-detail-empty span {
    display: block;
    color: var(--primary-light);
    font-size: 13px;
    font-family: var(--font-mono);
    margin-bottom: 12px;
}

.case-detail-empty h1 {
    color: var(--text-bright);
    font-size: 36px;
    margin-bottom: 12px;
}

.case-detail-empty p {
    color: var(--text-light);
    margin-bottom: 28px;
}

/* ============================================
   Contact Section — Dark Form
   ============================================ */
.contact-section {
    background: var(--bg-soft);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: stretch;
}

.contact-info-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--dark-card);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: var(--radius);
    transition: var(--transition);
    flex: 1;
    min-height: 0;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

.contact-info-item:hover {
    transform: none;
    border-color: rgba(59, 130, 246, 0.9);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

.contact-info-item:active {
    border-color: #3b82f6;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.contact-info-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: var(--radius);
    right: var(--radius);
    height: 2px;
    border-radius: 0 0 999px 999px;
    background: linear-gradient(90deg, #3b82f6 0%, #f97316 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 2;
}

.contact-info-item:hover::before,
.contact-info-item:active::before {
    opacity: 1;
}

.contact-icon {
    font-size: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-info-item h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-lighter);
    margin-bottom: 4px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-info-item p {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.contact-note {
    font-size: 12px;
    color: var(--text-lighter);
    font-family: var(--font-mono);
}

/* Combined phone/WeChat + QR */
.contact-combined-item {
    align-items: center !important;
}

.contact-combined-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-combined-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.contact-qrcode-sm {
    width: 72px;
    height: 72px;
    flex-shrink: 0;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #fff;
    padding: 4px;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.1);
}

.contact-qrcode-sm img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.contact-form-card {
    background: var(--dark-card);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: var(--radius);
    padding: 36px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.contact-form-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
}

.contact-form-card::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: var(--radius);
    right: var(--radius);
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.contact-form-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.form-desc {
    font-size: 14px;
    color: var(--text-lighter);
    margin-bottom: 28px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: start;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 6px;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    min-height: 18px;
    line-height: 18px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--text-bright);
    background: rgba(2, 6, 23, 0.6);
    transition: var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-lighter);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 0 0 20px rgba(59, 130, 246, 0.1);
    background: rgba(2, 6, 23, 0.8);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group select option {
    background: var(--dark-card);
    color: var(--text);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark-card);
    border-top: 1px solid var(--border);
    padding: 48px 0 24px;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-subtle);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand .logo-icon {
    font-size: 24px;
}

.footer-brand .logo-text {
    font-size: 18px;
    font-weight: 800;
    font-family: var(--font-mono);
    background: linear-gradient(135deg, #fb923c 0%, #f97316 36%, #3b82f6 72%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: 13px;
    color: var(--text-lighter);
    margin-left: 16px;
    font-family: var(--font-mono);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 13px;
    font-family: var(--font-mono);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
}

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

.footer-bottom p {
    font-size: 12px;
    color: var(--text-lighter);
    font-family: var(--font-mono);
}

.footer-bottom a {
    color: var(--text-lighter);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

/* ============================================
   Floating Contact — Glowing Orange
   ============================================ */
.floating-contact {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 999;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 24px var(--accent-glow);
    transition: var(--transition);
    font-family: var(--font-mono);
    animation: float-bounce 3s ease-in-out infinite;
}

@keyframes float-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.floating-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 32px var(--accent-glow);
}

.floating-btn-icon {
    font-size: 18px;
}

.floating-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 320px;
    background: var(--dark-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(249, 115, 22, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px) scale(0.95);
    transition: var(--transition);
}

.floating-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.floating-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(59, 130, 246, 0.05);
}

.floating-panel-header h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.floating-panel-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-light);
    transition: var(--transition);
    font-family: var(--font-mono);
}

.floating-panel-close:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--border-strong);
    color: var(--text-bright);
}

.floating-panel-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.floating-contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.floating-contact-icon {
    font-size: 20px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-bg);
    border: 1px solid rgba(249, 115, 22, 0.2);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.floating-contact-label {
    display: block;
    font-size: 11px;
    color: var(--text-lighter);
    font-weight: 500;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.floating-contact-value {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-bright);
    font-family: var(--font-mono);
}

.floating-contact-combined {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 4px 0;
}

.floating-contact-row {
    display: flex;
    align-items: center;
    gap: 14px;
}

.floating-qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.floating-qrcode img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    padding: 4px;
}

.floating-qrcode span {
    font-size: 10px;
    color: var(--text-lighter);
    font-family: var(--font-mono);
}

.floating-cta {
    margin-top: 4px;
    padding: 12px 24px;
    font-size: 13px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    box-shadow: 0 4px 14px var(--accent-glow);
    font-family: var(--font-mono);
}

.floating-cta:hover {
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    left: 32px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 16px;
    color: var(--text-light);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: var(--transition);
    font-family: var(--font-mono);
}

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

.back-to-top:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

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

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 44px;
    }

    .hero-stats {
        gap: 24px;
        padding: 24px 32px;
    }

    .stat-number {
        font-size: 28px;
    }

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

    .workflow-steps {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }

    .step-arrow {
        transform: rotate(90deg);
        margin: 0;
    }

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

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

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

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

    .case-card-large .case-image {
        aspect-ratio: 16 / 9;
        min-height: 0;
    }

}

@media (max-width: 768px) {
    .hide-mobile {
        display: none;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(20px);
        padding: 16px;
        flex-direction: column;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .nav-links a {
        display: block;
        padding: 12px 16px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 34px;
    }

    .hero-desc {
        font-size: 16px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .section {
        padding: 64px 0;
    }

    .section-title {
        font-size: 30px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .contact-info-card,
    .contact-form-card {
        height: auto;
    }

    .contact-info-item {
        flex: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
    }

    .footer-brand p {
        margin-left: 0;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .floating-contact {
        bottom: 20px;
        right: 20px;
    }

    .floating-btn-text {
        display: none;
    }

    .floating-btn {
        padding: 14px;
        border-radius: var(--radius-sm);
    }

    .floating-panel {
        right: -12px;
        width: 300px;
    }

    .back-to-top {
        left: 20px;
        bottom: 20px;
    }

    .workflow {
        padding: 32px 20px;
    }

    .coop-card > .coop-card-header,
    .coop-card > .coop-name,
    .coop-card > .coop-desc,
    .coop-card > .coop-features,
    .coop-card > .coop-tag-row {
        margin-left: 20px;
        margin-right: 20px;
    }

    .about-card h3::before {
        content: '';
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 64px;
    }

    body {
        overflow-x: hidden;
    }

    .container {
        width: 100%;
        padding: 0 18px;
    }

    .nav-container {
        height: 64px;
    }

    .logo-icon {
        font-size: 24px;
    }

    .logo-text {
        font-size: 18px;
        letter-spacing: 0;
    }

    .nav-links {
        top: 64px;
        left: 12px;
        right: 12px;
        padding: 10px;
        align-items: stretch;
        gap: 6px;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-lg);
        transform: translateY(-140%);
    }

    .nav-links a {
        width: 100%;
        padding: 13px 14px;
        text-align: center;
        letter-spacing: 0;
    }

    .mobile-menu-btn {
        min-width: 42px;
        min-height: 42px;
        align-items: center;
        justify-content: center;
    }

    .hero {
        min-height: auto;
        align-items: flex-start;
        padding: 104px 0 56px;
    }

    #particleCanvas {
        opacity: 0.42;
    }

    .hero-grid {
        background-size: 38px 38px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-badge {
        max-width: 100%;
        padding: 8px 12px;
        margin-bottom: 24px;
        font-size: 12px;
        white-space: normal;
        text-align: left;
        letter-spacing: 0;
    }

    .hero-title {
        font-size: 36px;
        line-height: 1.18;
        margin-bottom: 18px;
        letter-spacing: 0;
    }

    .hero-desc {
        max-width: 36rem;
        margin: 0 auto 28px;
        font-size: 16px;
        line-height: 1.75;
    }

    .hero-actions {
        align-items: stretch;
        gap: 12px;
        margin-bottom: 36px;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0;
        padding: 8px;
        border-radius: var(--radius);
    }

    .stat-item {
        min-width: 0;
        padding: 18px 8px;
    }

    .stat-number {
        font-size: 27px;
    }

    .stat-suffix {
        font-size: 16px;
    }

    .stat-label {
        font-size: 12px;
        letter-spacing: 0;
    }

    .stat-divider {
        display: none;
    }

    .section {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 34px;
    }

    .section-title {
        font-size: 30px;
        line-height: 1.25;
        letter-spacing: 0;
    }

    .section-desc {
        font-size: 15px;
        line-height: 1.7;
    }

    .about-grid,
    .coop-grid,
    .cases-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .about-card,
    .about-card-main,
    .case-info,
    .contact-form-card {
        padding: 24px;
    }

    .about-card-main {
        gap: 10px;
    }

    .about-card-icon {
        margin-bottom: 8px;
    }

    .about-card h3,
    .coop-name,
    .case-info h3,
    .workflow-title,
    .contact-form-card h3 {
        letter-spacing: 0;
    }

    .coop-grid {
        margin-bottom: 44px;
    }

    .coop-grid:has(.coop-card:hover) .coop-card:not(:hover) {
        filter: none;
    }

    .coop-card:hover,
    .about-card:hover,
    .case-card:hover,
    .contact-info-item:hover {
        transform: none;
    }

    .coop-features li {
        align-items: flex-start;
        line-height: 1.6;
        letter-spacing: 0;
    }

    .workflow {
        padding: 28px 18px;
    }

    .workflow-title {
        margin-bottom: 24px;
    }

    .workflow-steps {
        align-items: stretch;
        gap: 10px;
    }

    .workflow-step {
        width: 100%;
        align-items: flex-start;
        gap: 14px;
        padding: 14px;
        background: rgba(59, 130, 246, 0.04);
        border: 1px solid var(--border-subtle);
    }

    .step-number {
        width: 34px;
        flex-shrink: 0;
        font-size: 28px;
    }

    .step-content {
        min-width: 0;
    }

    .step-content h4,
    .step-content p {
        letter-spacing: 0;
    }

    .step-arrow {
        display: none;
    }

    .case-card-large .case-image,
    .case-image,
    .dynamic-case-image img {
        min-height: 0;
    }

    .case-card-large .case-image {
        aspect-ratio: 16 / 9;
    }

    .case-type-icon {
        font-size: 46px;
    }

    .case-info p {
        line-height: 1.7;
    }

    .contact-info-item {
        align-items: center;
        padding: 20px;
    }

    .contact-icon {
        flex: 0 0 auto;
        align-self: center;
        margin-block: auto;
    }

    .contact-info-item p {
        font-size: 15px;
        overflow-wrap: anywhere;
    }

    .contact-note {
        display: block;
        margin-top: 4px;
        line-height: 1.6;
        letter-spacing: 0;
    }

    .contact-combined-top {
        align-items: flex-start;
    }

    .contact-qrcode-sm {
        width: 68px;
        height: 68px;
    }

    .form-row {
        gap: 14px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        min-height: 46px;
        font-size: 16px;
        letter-spacing: 0;
    }

    .footer {
        padding: 40px 0 22px;
    }

    .footer-content {
        gap: 22px;
    }

    .footer-brand p {
        line-height: 1.6;
        letter-spacing: 0;
    }

    .footer-links {
        gap: 10px 18px;
    }

    .footer-links a,
    .footer-bottom p {
        letter-spacing: 0;
    }

    .floating-contact {
        right: 16px;
        bottom: 16px;
    }

    .floating-btn {
        width: 46px;
        height: 46px;
        padding: 0;
        justify-content: center;
    }

    .floating-panel {
        right: 0;
        bottom: 58px;
        width: min(320px, calc(100vw - 32px));
        max-height: calc(100vh - 96px);
        overflow: auto;
    }

    .floating-contact-combined {
        flex-direction: column;
    }

    .floating-qrcode {
        width: 100%;
    }

    .floating-qrcode img {
        width: 96px;
        height: 96px;
    }

    .back-to-top {
        left: 16px;
        bottom: 16px;
        width: 42px;
        height: 42px;
    }

    .case-detail-hero {
        padding: 98px 0 52px;
    }

    .case-detail-hero-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .case-detail-copy h1 {
        font-size: 34px;
        line-height: 1.22;
    }

    .case-detail-copy p {
        font-size: 15px;
        line-height: 1.75;
    }

    .case-detail-actions {
        flex-direction: column;
        gap: 12px;
        margin-top: 24px;
    }

    .case-detail-visual,
    .case-detail-visual img {
        min-height: 220px;
    }

    .case-detail-visual-icon {
        font-size: 64px;
    }

    .case-detail-meta {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .case-detail-meta-item {
        padding: 18px;
    }

    .case-detail-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .case-detail-panel {
        padding: 24px;
    }

    .case-detail-panel h2 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .nav-container {
        height: 60px;
    }

    .logo {
        gap: 8px;
        min-width: 0;
    }

    .logo-text {
        max-width: 9em;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .nav-links {
        top: 60px;
        left: 8px;
        right: 8px;
    }

    .hero {
        padding: 92px 0 46px;
    }

    .hero-badge {
        display: flex;
        align-items: flex-start;
        margin-bottom: 20px;
    }

    .badge-dot {
        margin-top: 5px;
        flex-shrink: 0;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-desc {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 24px;
    }

    .btn {
        width: 100%;
        min-height: 46px;
        padding: 12px 18px;
        font-size: 14px;
    }

    .stat-item {
        padding: 16px 6px;
    }

    .stat-number {
        font-size: 24px;
    }

    .stat-label {
        font-size: 11px;
    }

    .section {
        padding: 52px 0;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-title {
        font-size: 26px;
    }

    .about-card,
    .about-card-main,
    .case-info,
    .contact-form-card {
        padding: 20px;
    }

    .about-card h3,
    .coop-name,
    .contact-form-card h3 {
        font-size: 18px;
        line-height: 1.45;
    }

    .about-card p,
    .coop-desc,
    .case-info p,
    .form-desc {
        font-size: 14px;
    }

    .coop-card > .coop-card-header,
    .coop-card > .coop-name,
    .coop-card > .coop-desc,
    .coop-card > .coop-features,
    .coop-card > .coop-tag-row {
        margin-left: 18px;
        margin-right: 18px;
    }

    .coop-card-header {
        padding-top: 18px;
    }

    .coop-badge {
        right: 12px;
    }

    .workflow {
        padding: 24px 14px;
    }

    .workflow-step {
        padding: 12px;
    }

    .step-content h4 {
        font-size: 14px;
    }

    .step-content p {
        font-size: 12px;
        line-height: 1.65;
    }

    .case-card-large .case-image,
    .case-image,
    .dynamic-case-image img {
        min-height: 0;
    }

    .case-card-large .case-image {
        aspect-ratio: 16 / 9;
    }

    .case-tech,
    .coop-tag-row {
        gap: 6px;
    }

    .contact-info-item {
        gap: 12px;
        padding: 18px;
        align-items: center;
    }

    .contact-icon {
        width: 42px;
        height: 42px;
        font-size: 21px;
        flex: 0 0 42px;
    }

    .contact-combined-top {
        flex-direction: column;
        gap: 10px;
    }

    .contact-qrcode-sm {
        width: 88px;
        height: 88px;
    }

    .floating-panel {
        width: calc(100vw - 24px);
    }

    .footer-links {
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: 100%;
    }

    .case-detail-hero {
        padding: 86px 0 44px;
    }

    .case-detail-back {
        margin-bottom: 20px;
    }

    .case-detail-copy h1 {
        font-size: 29px;
    }

    .case-detail-meta {
        grid-template-columns: 1fr;
    }

    .case-detail-panel {
        padding: 20px;
    }

    .case-detail-tags span {
        font-size: 11px;
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 29px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .stat-item + .stat-item {
        border-top: 1px solid var(--border-subtle);
    }

    .contact-info-item {
        flex-direction: row;
        align-items: center;
    }

    .floating-contact,
    .back-to-top {
        bottom: 12px;
    }
}