/* ===== 开元云科技 官网样式系统 ===== */
/* 设计参考: OpenAI风格, 极简科技感 */

/* === CSS Variables === */
:root {
    --brand-primary: #6C5CE7;
    --brand-light: #A29BFE;
    --brand-sky: #74B9FF;
    --brand-gradient: linear-gradient(135deg, #6C5CE7, #A29BFE, #74B9FF);
    --bg-dark: #0a0a0a;
    --bg-card: #1A1A1A;
    --bg-card-hover: #222222;
    --border-dark: #222;
    --border-active: #6C5CE7;
    --text-primary: #FFFFFF;
    --text-secondary: #999999;
    --text-muted: #666666;
    --max-width: 1100px;
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s ease;
}

/* === Reset & Base === */
* { margin: 0; padding: 0; box-sizing: border-box; }

body, html {
    font-family: var(--font-family);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* === Navigation === */
.nav-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10, 10, 10, 0.8);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 0 48px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 18px;
    font-weight: 700;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--brand-primary);
    color: white;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

/* === Bricks Widget Overrides for Portal === */

/* Root container */
.site-root {
    font-family: var(--font-family);
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Nav buttons — reset bricks button defaults */
.nav-bar .bricks-button {
    background: none;
    border: none;
    color: inherit;
    font-family: var(--font-family);
    cursor: pointer;
    padding: 0;
    margin: 0;
    font-size: inherit;
    outline: none;
    box-shadow: none;
    border-radius: 0;
    line-height: 1;
}

.nav-link {
    font-size: 14px !important;
    color: var(--text-secondary) !important;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary) !important;
}

.nav-cta {
    display: inline-flex !important;
    align-items: center;
    padding: 8px 20px !important;
    background: var(--brand-primary) !important;
    color: white !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    font-weight: 500;
    transition: var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

.nav-login {
    font-size: 14px !important;
    color: var(--text-secondary) !important;
    background: rgba(255,255,255,0.08) !important;
    padding: 6px 16px !important;
    border-radius: 6px !important;
    transition: var(--transition);
}

.nav-login:hover {
    color: var(--text-primary) !important;
    background: rgba(255,255,255,0.15) !important;
}

.nav-register {
    font-size: 14px !important;
    color: white !important;
    background: var(--brand-primary) !important;
    padding: 6px 16px !important;
    border-radius: 6px !important;
    font-weight: 500;
    transition: var(--transition);
}

.nav-register:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(108, 92, 231, 0.4);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-right-btns {
    display: flex;
    gap: 8px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(255,255,255,0.08);
    cursor: pointer;
    transition: var(--transition);
}

.nav-user:hover {
    background: rgba(255,255,255,0.15);
}

.nav-avatar {
    font-size: 16px;
}

.nav-username {
    font-size: 14px;
    color: var(--text-primary);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Hero section bricks overrides */
.hero-section.bricks-vbox {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 48px 80px;
    position: relative;
    overflow: hidden;
}

.hero-subtitle.bricks-text {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 300;
    max-width: 600px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons.bricks-hbox {
    display: flex;
    gap: 16px;
}

.hero-buttons .bricks-button {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    box-shadow: none;
    line-height: 1;
}

.btn-primary {
    background: var(--brand-primary) !important;
    color: white !important;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(108, 92, 231, 0.4);
}

.btn-outline {
    background: transparent !important;
    color: var(--text-primary) !important;
    border: 1px solid rgba(255,255,255,0.2) !important;
}

.btn-outline:hover {
    border-color: var(--brand-primary) !important;
    transform: translateY(-2px);
}

/* Section VBox bricks overrides */
.section.bricks-vbox {
    padding: 80px 48px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title.bricks-title2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc.bricks-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-weight: 300;
}

/* Products grid — override bricks HBox to CSS grid */
.products-grid.bricks-hbox {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    flex-direction: unset;
}

.product-card.bricks-vbox {
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 32px 24px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateX(4px);
    border-color: var(--brand-primary);
}

.product-card .card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.product-card .card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.product-card .product-detail {
    display: none;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-dark);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.product-card:hover .product-detail,
.product-card.active .product-detail {
    display: block;
}

/* Cases grid */
.cases-grid.bricks-hbox {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    flex-direction: unset;
}

.case-card.bricks-vbox {
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: var(--brand-primary);
}

.case-tag {
    font-size: 11px !important;
    color: var(--brand-light) !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-weight: 500;
}

.case-title {
    font-size: 17px !important;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.case-desc {
    font-size: 13px !important;
    color: var(--text-secondary) !important;
    line-height: 1.6;
}

/* Section header */
.section-header.bricks-hbox {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.section-header .section-desc {
    margin-bottom: 0;
    margin-top: 8px;
}

/* CTA Banner */
.cta-banner.bricks-hbox {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(116, 185, 255, 0.1));
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: 16px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
}

.cta-text {
    font-size: 20px !important;
    font-weight: 600;
    color: var(--text-primary);
}

/* News section */
.news-header.bricks-hbox {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.news-view-all {
    font-size: 14px !important;
    color: var(--brand-light) !important;
    background: none !important;
    border: none !important;
    cursor: pointer;
    transition: var(--transition);
}

.news-view-all:hover {
    color: var(--brand-primary) !important;
}

.news-list.bricks-vbox {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item.bricks-hbox {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
}

.news-item:hover {
    border-color: var(--brand-primary);
}

.news-date {
    font-size: 12px !important;
    color: var(--text-muted) !important;
    white-space: nowrap;
    min-width: 80px;
}

.news-title {
    font-size: 14px !important;
    font-weight: 500;
    color: var(--text-primary);
}

/* Footer */
.site-footer.bricks-vbox {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 40px 48px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* Clickable utility */
.clickable { cursor: pointer; }

/* === Hero Section === */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 48px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-content {
    max-width: var(--max-width);
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(108, 92, 231, 0.15);
    border: 1px solid rgba(108, 92, 231, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--brand-light);
    margin-bottom: 24px;
}

.hero-tag .pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--brand-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title .gradient-text {
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 300;
    max-width: 600px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    background: var(--brand-primary);
    color: white;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(108, 92, 231, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.btn-outline:hover {
    border-color: var(--brand-primary);
    transform: translateY(-2px);
}

.hero-mascot {
    position: absolute;
    right: 0;
    bottom: 10%;
    opacity: 0.12;
    pointer-events: none;
}

/* === Section Common === */
.section {
    padding: 80px 48px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-weight: 300;
}

/* === Products (1+N+X) === */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 32px 24px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: transparent;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateX(4px);
    border-color: var(--brand-primary);
}

.product-card:hover::before {
    background: var(--brand-primary);
}

.product-card.active {
    background: rgba(108, 92, 231, 0.1);
    border-color: var(--brand-primary);
}

.product-card.active::before {
    background: var(--brand-primary);
}

.product-card .card-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.product-card .card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-card .card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.product-detail {
    display: none;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-dark);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.product-card.active .product-detail {
    display: block;
}

/* === Cases === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: var(--brand-primary);
}

.case-tag {
    font-size: 11px;
    color: var(--brand-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-weight: 500;
}

.case-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.case-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === CTA Banner === */
.cta-banner {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(116, 185, 255, 0.1));
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: 16px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
}

.cta-text {
    font-size: 20px;
    font-weight: 600;
}

/* === News === */
.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.news-view-all {
    font-size: 14px;
    color: var(--brand-light);
    transition: var(--transition);
}

.news-view-all:hover { color: var(--brand-primary); }

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-dark);
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
}

.news-item:hover {
    border-color: var(--brand-primary);
}

.news-date {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 80px;
}

.news-title {
    font-size: 14px;
    font-weight: 500;
}

/* === Footer === */
.site-footer {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 40px 48px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* === Floating Contact Widget === */
.float-contact {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 200;
}

.float-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
    transition: var(--transition);
}

.float-avatar:hover {
    transform: translateY(-3px) scale(1.05);
}

.float-avatar svg {
    width: 32px;
    height: 32px;
}

.float-bubble {
    position: absolute;
    right: 68px;
    bottom: 12px;
    background: white;
    color: #333;
    padding: 10px 16px;
    border-radius: 12px;
    font-size: 14px;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.float-contact:hover .float-bubble {
    opacity: 1;
    transform: translateX(0);
}

.float-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 300px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.2);
    overflow: hidden;
    display: none;
    animation: panelSlideUp 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.float-panel.active { display: block; }

@keyframes panelSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    background: var(--brand-gradient);
    padding: 20px;
    color: white;
    font-size: 16px;
    font-weight: 600;
}

.panel-body {
    padding: 16px;
}

.panel-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #f5f5f5;
    border-radius: 10px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: var(--transition);
    color: #333;
    font-size: 14px;
}

.panel-option:hover {
    background: var(--brand-primary);
    color: white;
}

.panel-option svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.panel-form {
    padding: 16px;
    display: none;
}

.panel-form.active { display: block; }

.panel-form input,
.panel-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 10px;
    font-family: var(--font-family);
    outline: none;
    transition: var(--transition);
}

.panel-form input:focus,
.panel-form textarea:focus {
    border-color: var(--brand-primary);
}

.panel-form textarea { resize: vertical; min-height: 60px; }

.panel-form .submit-btn {
    width: 100%;
    padding: 10px;
    background: var(--brand-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.panel-form .submit-btn:hover {
    background: #5a4bd1;
}

.panel-form .back-btn {
    background: none;
    border: none;
    color: var(--brand-primary);
    font-size: 13px;
    cursor: pointer;
    margin-bottom: 12px;
    padding: 0;
}

/* === Responsive === */
@media (max-width: 768px) {
    .nav-bar { padding: 0 20px; }
    .nav-links { display: none; }
    
    .hero-section { padding: 100px 20px 60px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .hero-buttons { flex-direction: column; }
    
    .section { padding: 60px 20px; }
    .section-title { font-size: 28px; }
    
    .products-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    
    .cta-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .news-item { flex-direction: column; gap: 8px; }
    
    .site-footer { padding: 30px 20px; }
    
    .float-panel { width: 280px; right: -8px; }
}

/* === Scroll Animations === */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === Global bricks widget background reset for dark theme === */
.site-root .bricks-vbox,
.site-root .bricks-hbox,
.site-root .bricks-text,
.site-root .bricks-title2,
.site-root .bricks-title3,
.site-root .bricks-title4,
.site-root .bricks-filler,
.site-root .bricks-html {
    background: transparent;
    color: inherit;
}

.site-root .bricks-button {
    background: transparent;
    color: var(--text-primary);
}

/* Clickable utility */
.clickable { cursor: pointer; }