/* ===========================================
   index.css — 云安华通官网首页样式
   =========================================== */

/* ========= Hero Section ========= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--nav-height);
}
#heroCanvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
}
.hero::before {
    content: '';
    position: absolute;
    top: 20%; left: 50%;
    transform: translateX(-50%);
    width: 900px; height: 600px;
    background: radial-gradient(ellipse at center, rgba(0,212,255,0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: var(--color-primary-dim);
    border: 1px solid rgba(0,212,255,0.25);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 40px;
    letter-spacing: 1px;
    animation: fadeInDown 0.8s ease forwards;
}
.hero-badge::before {
    content: '';
    width: 8px; height: 8px;
    background: var(--color-safe);
    border-radius: 50%;
    animation: pulseDot 2s ease infinite;
}
@keyframes pulseDot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,245,160,0.5); }
    50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(0,245,160,0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-24px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero-title {
    font-size: clamp(42px, 7vw, 72px);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.15s both;
}
.hero-title .gradient-text {
    display: inline;
}
.hero-desc {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.3s both;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(36px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.45s both;
}
.hero-scroll {
    position: absolute;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 1px;
    animation: scrollBounce 2.5s ease infinite;
}
.hero-scroll svg {
    width: 20px; height: 20px;
    stroke: var(--text-muted);
}
@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(12px); }
    60% { transform: translateX(-50%) translateY(6px); }
}

/* ========= Product Showcase ========= */
.product-showcase-section {
    padding: 140px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
}
.product-showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.product-visual-wrap {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: linear-gradient(145deg, rgba(0,212,255,0.03), rgba(139,92,246,0.05));
    border: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.product-visual-inner {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    background: rgba(5,10,21,0.6);
    border: 1px solid rgba(0,212,255,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    position: relative;
    overflow: hidden;
}
.product-visual-inner::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(0,212,255,0.04) 0%, transparent 50%);
    pointer-events: none;
}
.product-visual-icon {
    width: 96px; height: 96px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--color-primary-dim), var(--color-accent-dim));
    border: 1px solid rgba(0,212,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 44px;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 40px rgba(0,212,255,0.15);
}
.product-arch-layers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
    position: relative;
    z-index: 1;
}
.arch-layer-pill {
    padding: 12px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.5px;
}
.arch-layer-pill.blue {
    background: rgba(0,212,255,0.08);
    border: 1px solid rgba(0,212,255,0.2);
    color: var(--color-primary);
}
.arch-layer-pill.purple {
    background: rgba(139,92,246,0.08);
    border: 1px solid rgba(139,92,246,0.2);
    color: var(--color-accent);
}
.arch-layer-pill.green {
    background: rgba(0,245,160,0.08);
    border: 1px solid rgba(0,245,160,0.2);
    color: var(--color-safe);
}
.product-info-wrap {
    padding: 20px 0;
}
.product-info-wrap h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.product-info-wrap h2 .gradient-text {
    display: inline;
}
.product-info-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}
.product-tags-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}
.product-tag {
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.product-cta-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ========= Services Section ========= */
.services-section {
    padding: 140px 0;
    background: var(--bg-primary);
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.service-card {
    background: rgba(17,27,46,0.5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-xl);
    padding: 44px 36px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--card-accent, var(--color-primary)), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0,212,255,0.15);
    box-shadow: 0 24px 80px rgba(0,0,0,0.4);
}
.service-card:hover::before { opacity: 1; }
.service-card[data-accent="blue"] { --card-accent: var(--color-primary); }
.service-card[data-accent="purple"] { --card-accent: var(--color-accent); }
.service-card[data-accent="green"] { --card-accent: var(--color-safe); }

.service-icon-wrap {
    width: 64px; height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 28px;
    background: var(--icon-bg, var(--color-primary-dim));
    border: 1px solid var(--icon-border, rgba(0,212,255,0.12));
}
.service-card[data-accent="blue"] .service-icon-wrap { --icon-bg: var(--color-primary-dim); --icon-border: rgba(0,212,255,0.15); }
.service-card[data-accent="purple"] .service-icon-wrap { --icon-bg: var(--color-accent-dim); --icon-border: rgba(139,92,246,0.15); }
.service-card[data-accent="green"] .service-icon-wrap { --icon-bg: var(--color-safe-dim, rgba(0,245,160,0.1)); --icon-border: rgba(0,245,160,0.15); }

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.service-card p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 28px;
}
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--card-accent, var(--color-primary));
    transition: gap 0.3s ease;
}
.service-link:hover { gap: 14px; }

/* ========= Stats + Features Section ========= */
.why-section {
    padding: 140px 0;
    background: var(--bg-secondary);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 80px;
}
.stat-card {
    text-align: center;
    padding: 44px 24px;
    background: rgba(17,27,46,0.4);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-xl);
    transition: all 0.4s ease;
}
.stat-card:hover {
    border-color: rgba(0,212,255,0.12);
    transform: translateY(-4px);
}
.stat-number {
    font-family: var(--font-en);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-number .gradient-text {
    font-size: inherit;
    font-weight: inherit;
    line-height: 1;
}
.stat-label {
    font-size: 15px;
    color: var(--text-muted);
    font-weight: 500;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.feature-card {
    display: flex;
    gap: 20px;
    padding: 32px;
    background: rgba(17,27,46,0.4);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    transition: all 0.4s ease;
}
.feature-card:hover {
    border-color: var(--feature-border, rgba(0,212,255,0.15));
    background: rgba(17,27,46,0.7);
    transform: translateY(-4px);
}
.feature-card[data-f="blue"] { --feature-border: rgba(0,212,255,0.2); }
.feature-card[data-f="purple"] { --feature-border: rgba(139,92,246,0.2); }
.feature-card[data-f="green"] { --feature-border: rgba(0,245,160,0.2); }
.feature-card[data-f="amber"] { --feature-border: rgba(245,158,11,0.2); }

.feature-icon-wrap {
    width: 52px; height: 52px;
    min-width: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: var(--fi-bg, rgba(0,212,255,0.08));
    border: 1px solid var(--fi-bd, rgba(0,212,255,0.12));
}
.feature-card[data-f="blue"] .feature-icon-wrap { --fi-bg: rgba(0,212,255,0.1); --fi-bd: rgba(0,212,255,0.15); }
.feature-card[data-f="purple"] .feature-icon-wrap { --fi-bg: rgba(139,92,246,0.1); --fi-bd: rgba(139,92,246,0.15); }
.feature-card[data-f="green"] .feature-icon-wrap { --fi-bg: rgba(0,245,160,0.1); --fi-bd: rgba(0,245,160,0.15); }
.feature-card[data-f="amber"] .feature-icon-wrap { --fi-bg: rgba(245,158,11,0.1); --fi-bd: rgba(245,158,11,0.15); }

.feature-text h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.feature-text p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========= About Section ========= */
.about-summary {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}
.about-lead {
    font-size: 17px;
    color: var(--text-dim);
    line-height: 2;
}
.about-lead strong {
    color: #fff;
    font-weight: 700;
}
@media(max-width:768px) {
    .about-two-col {
        grid-template-columns: 1fr !important;
        gap: 32px !important;
    }
}

/* ========= Cases Preview ========= */
.cases-section {
    padding: 140px 0;
    background: var(--bg-primary);
}
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.case-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: rgba(17,27,46,0.4);
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.case-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0,212,255,0.15);
    box-shadow: 0 24px 80px rgba(0,0,0,0.3);
}
.case-img {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(139,92,246,0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
    overflow: hidden;
}
.case-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(5,10,21,0.8));
}
.case-body {
    padding: 28px 32px 36px;
}
.case-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.case-tag {
    padding: 4px 14px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.case-tag.blue { background: var(--color-primary-dim); color: var(--color-primary); }
.case-tag.purple { background: var(--color-accent-dim); color: var(--color-accent); }
.case-tag.green { background: rgba(0,245,160,0.1); color: var(--color-safe); }
.case-body h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}
.case-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}
.cases-more {
    text-align: center;
    margin-top: 56px;
}

/* ========= Blog Preview ========= */
.blog-section {
    padding: 140px 0;
    background: var(--bg-secondary);
}
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.blog-card {
    background: rgba(17,27,46,0.4);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.blog-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0,212,255,0.15);
}
.blog-date {
    padding: 20px 32px 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    font-family: var(--font-en);
    letter-spacing: 0.5px;
}
.blog-body {
    padding: 12px 32px 36px;
}
.blog-body h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}
.blog-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========= CTA Banner ========= */
.cta-banner-section {
    padding: 0 0 140px;
}
.cta-banner {
    background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(139,92,246,0.06));
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: calc(var(--radius-xl) + 8px);
    padding: 80px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(0,212,255,0.04) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(139,92,246,0.04) 0%, transparent 50%);
    animation: ctaRotate 30s linear infinite;
    pointer-events: none;
}
@keyframes ctaRotate {
    to { transform: rotate(360deg); }
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.2;
}
.cta-banner p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 44px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========= Contact Info Shared ========= */
.contact-phone { color: var(--color-primary); font-weight: 600; }
.contact-email { color: var(--color-accent); font-weight: 600; }

/* ========= Responsive ========= */
@media (max-width: 1200px) {
    .product-showcase-grid { gap: 48px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1024px) {
    .product-showcase-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .product-tags-row { justify-content: center; }
    .product-cta-row { justify-content: center; }
    .product-visual-wrap { max-width: 500px; margin: 0 auto; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .hero { min-height: auto; padding: 100px 0 80px; }
    .hero-inner { padding: 0 16px; text-align: center; }
    .hero-title { letter-spacing: 0; font-size: clamp(30px, 8vw, 48px); }
    .hero-desc { margin-bottom: 32px; font-size: 15px; }
    .hero-badge { font-size: 12px; padding: 6px 16px; }
    .hero-scroll { display: none; }
    .services-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-card { padding: 28px 16px; }
    .cta-banner { padding: 48px 24px; }
    .hero-actions { flex-direction: column; align-items: center; gap: 14px; width: 100%; }
    .hero-actions .btn { width: 100%; max-width: 280px; }
    .product-cta-row { flex-direction: column; align-items: center; }
}