/* ============================================
   广东极智科技有限公司 - 官方网站
   Jizhi Technology Official Website
   ============================================ */

/* --- Reset & Variables --- */
:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --accent: #00d4ff;
    --bg-dark: #0a1628;
    --bg-section: #0f1f3a;
    --text: #e8edf5;
    --text-muted: #8899b4;
    --card-bg: rgba(255,255,255,0.04);
    --card-border: rgba(255,255,255,0.08);
    --radius: 12px;
    --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* --- Navigation --- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-weight: 700; font-size: 1.3rem; }
.nav-logo img { height: 36px; }
.nav-menu { display: flex; list-style: none; gap: 32px; }
.nav-menu a { color: var(--text-muted); text-decoration: none; font-size: 0.95rem; transition: var(--transition); position: relative; }
.nav-menu a:hover, .nav-menu a.active { color: var(--accent); }
.nav-menu a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--accent); transition: var(--transition); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; transition: var(--transition); }

/* --- Hero --- */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #0a1628 0%, #0d2240 30%, #132850 60%, #0a1628 100%);
    position: relative; overflow: hidden; text-align: center;
}
.hero::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(26,115,232,0.08) 0%, transparent 60%),
                radial-gradient(circle at 70% 30%, rgba(0,212,255,0.06) 0%, transparent 50%);
    animation: heroPulse 8s ease-in-out infinite;
}
@keyframes heroPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.hero-overlay { position: absolute; inset: 0; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><rect fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5" x="0" y="0" width="100" height="100"/></svg>'); opacity: 0.5; }

.hero-content { position: relative; z-index: 2; max-width: 800px; padding: 0 24px; }
.hero-title { font-size: 3.5rem; font-weight: 800; margin-bottom: 20px; letter-spacing: 2px; }
.hero-title .highlight { background: linear-gradient(135deg, var(--accent), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 1.2rem; color: var(--accent); margin-bottom: 12px; font-weight: 500; }
.hero-desc { font-size: 1rem; color: var(--text-muted); margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
    display: inline-block; padding: 14px 36px; border-radius: 50px;
    font-size: 1rem; font-weight: 600; text-decoration: none;
    transition: var(--transition); cursor: pointer; border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4a90d9);
    color: #fff; box-shadow: 0 4px 20px rgba(26,115,232,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(26,115,232,0.5); }
.btn-outline { border: 2px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: var(--bg-dark); transform: translateY(-2px); }

.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 2; }
.hero-scroll span { display: block; width: 24px; height: 40px; border: 2px solid var(--text-muted); border-radius: 12px; position: relative; }
.hero-scroll span::after {
    content: ''; position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
    width: 4px; height: 8px; background: var(--accent); border-radius: 2px;
    animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.3; }
}

/* --- Sections --- */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-section); }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; font-weight: 700; margin-bottom: 8px; }
.section-subtitle { color: var(--accent); font-size: 1rem; letter-spacing: 2px; text-transform: uppercase; }

/* --- About --- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; margin-bottom: 60px; }
.about-lead { font-size: 1.15rem; color: #fff; margin-bottom: 20px; line-height: 1.8; }
.about-text p { color: var(--text-muted); margin-bottom: 16px; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat-item {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 28px 20px; text-align: center;
    transition: var(--transition);
}
.stat-item:hover { border-color: var(--accent); transform: translateY(-4px); }
.stat-number { display: block; font-size: 2.5rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-number small { font-size: 1.2rem; }
.stat-label { display: block; color: var(--text-muted); font-size: 0.9rem; margin-top: 6px; }

.about-vision { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.vision-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 32px;
    text-align: center; transition: var(--transition);
}
.vision-card:hover { border-color: var(--primary); }
.vision-card:hover .icon-inline { color: var(--primary); }
.vision-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.vision-card p { color: var(--text-muted); font-size: 1.05rem; }

/* --- Services --- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 60px; }
.service-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 36px 24px;
    transition: var(--transition); cursor: default;
}
.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.service-icon { color: var(--accent); margin-bottom: 16px; display: block; }
.service-card:hover .service-icon { color: var(--primary); }
.service-card h3 { font-size: 1.15rem; margin-bottom: 12px; color: #fff; }
.service-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

.product-hardware { margin-bottom: 60px; }
.product-hardware h3, .custom-services h3 { text-align: center; font-size: 1.5rem; margin-bottom: 24px; color: var(--accent); }
.hardware-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.hardware-tags span {
    padding: 8px 18px; border-radius: 50px;
    background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.2);
    color: var(--accent); font-size: 0.85rem; transition: var(--transition);
}
.hardware-tags span:hover { background: rgba(0,212,255,0.18); }

.custom-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.custom-item {
    padding: 18px 20px; border-radius: var(--radius);
    background: var(--card-bg); border: 1px solid var(--card-border);
    font-size: 0.95rem; transition: var(--transition);
}
.custom-item:hover { border-color: var(--primary); }
.custom-item .icon-inline { margin-right: 8px; vertical-align: -5px; color: var(--accent); }
.custom-item:hover .icon-inline { color: var(--primary); }

/* --- Icon Inline (for vision cards etc) --- */
.icon-inline { color: var(--accent); display: block; margin: 0 auto 12px; }

/* --- Founder Story --- */
.founder-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 48px; }

.founder-quote {
    background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,212,255,0.05));
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 32px 28px;
    height: 100%; display: flex; flex-direction: column; justify-content: center;
}
.founder-quote p { font-size: 1.1rem; line-height: 1.8; color: #dfe6f0; margin-bottom: 16px; font-style: italic; }
.founder-attribution { color: var(--accent); font-size: 0.9rem; }

.founder-timeline { position: relative; padding-left: 28px; }
.founder-timeline::before {
    content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px;
    width: 2px; background: linear-gradient(to bottom, var(--accent), transparent);
}
.tl-item { position: relative; margin-bottom: 28px; }
.tl-dot {
    position: absolute; left: -28px; top: 6px;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--bg-section); border: 2px solid var(--accent);
    z-index: 1;
}
.tl-content h4 { font-size: 1.05rem; color: var(--accent); margin-bottom: 4px; }
.tl-content p { color: var(--text-muted); font-size: 0.9rem; }

.founder-media { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.media-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 22px 20px;
    transition: var(--transition);
}
.media-card:hover { border-color: var(--accent); }
.media-card h4 { font-size: 0.9rem; color: var(--accent); margin-bottom: 10px; }
.media-card p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; }

/* --- Advantages --- */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-item {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 32px 24px;
    text-align: center; transition: var(--transition);
}
.advantage-item:hover { border-color: var(--accent); transform: translateY(-4px); }
.adv-icon { color: var(--accent); margin-bottom: 16px; display: block; }
.advantage-item:hover .adv-icon { color: var(--primary); }
.advantage-item h3 { font-size: 1.1rem; margin-bottom: 10px; color: #fff; }
.advantage-item p { color: var(--text-muted); font-size: 0.9rem; }

/* --- Cases --- */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 28px 24px;
    transition: var(--transition); position: relative; overflow: hidden;
}
.case-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.case-tag {
    display: inline-block; padding: 4px 14px; border-radius: 50px;
    background: rgba(26,115,232,0.2); color: var(--primary);
    font-size: 0.8rem; font-weight: 600; margin-bottom: 14px;
}
.case-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.case-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

/* --- AI Agent --- */
.agent-intro { max-width: 800px; margin: 0 auto 0; text-align: center; }
.agent-intro p { font-size: 1.1rem; color: var(--text-muted); line-height: 1.8; }

.agent-scenarios { margin-top: 60px; }
.agent-scenarios h3 { text-align: center; font-size: 1.5rem; color: var(--accent); margin-bottom: 28px; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scenario-item {
    padding: 22px 20px; border-radius: var(--radius);
    background: var(--card-bg); border: 1px solid var(--card-border);
    transition: var(--transition);
}
.scenario-item:hover { border-color: var(--primary); transform: translateY(-2px); }
.scenario-item h4 { font-size: 1rem; color: #fff; margin-bottom: 8px; }
.scenario-item p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.5; }

.agent-tech { margin-top: 60px; }
.agent-tech h3 { text-align: center; font-size: 1.5rem; color: var(--accent); margin-bottom: 24px; }
.tech-flow {
    display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
    gap: 12px; margin-bottom: 24px;
}
.tech-step {
    background: linear-gradient(135deg, rgba(26,115,232,0.15), rgba(0,212,255,0.08));
    border: 1px solid var(--card-border); border-radius: var(--radius);
    padding: 18px 22px; text-align: center; font-weight: 600; color: #fff;
    min-width: 130px;
}
.tech-step small { display: block; color: var(--text-muted); font-weight: 400; margin-top: 4px; font-size: 0.8rem; }
.tech-arrow { color: var(--accent); font-size: 1.5rem; font-weight: 700; }
.tech-note { text-align: center; color: var(--text-muted); font-size: 0.9rem; }

.agent-cta { margin-top: 60px; text-align: center; padding: 40px; border-radius: var(--radius); background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,212,255,0.05)); border: 1px solid var(--card-border); }
.agent-cta p { color: var(--text); margin-bottom: 20px; font-size: 1.05rem; }

/* --- Contact --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 28px; }
.contact-icon { color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.contact-item h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-item p { color: var(--text-muted); }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form input, .contact-form textarea {
    padding: 14px 18px; border-radius: var(--radius);
    background: var(--card-bg); border: 1px solid var(--card-border);
    color: #fff; font-size: 0.95rem; font-family: inherit;
    transition: var(--transition); outline: none;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--primary); }
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form button { align-self: flex-start; }

/* --- Footer --- */
.footer {
    background: #060e1c; padding: 60px 0 30px;
    border-top: 1px solid var(--card-border);
}
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { height: 40px; margin-bottom: 12px; }
.footer-brand p { color: var(--text-muted); }
.footer-links h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-links a { display: block; color: var(--text-muted); text-decoration: none; margin-bottom: 8px; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }

.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid var(--card-border); }
.footer-bottom p { color: var(--text-muted); font-size: 0.8rem; }

/* --- Animations --- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate { animation: fadeUp 0.8s ease forwards; }
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .services-grid, .advantages-grid, .cases-grid, .founder-media { grid-template-columns: repeat(2, 1fr); }
.founder-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .hero-title { font-size: 2.2rem; }
    .section { padding: 70px 0; }
    .section-header h2 { font-size: 1.8rem; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .scenario-grid, .tech-flow { gap: 10px; }
    .services-grid, .advantages-grid, .cases-grid, .custom-grid, .founder-media, .scenario-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; gap: 30px; }
    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 260px; height: 100vh;
        background: rgba(10,22,40,0.98); backdrop-filter: blur(20px);
        flex-direction: column; padding: 80px 30px 30px; gap: 24px;
        transition: var(--transition);
    }
    .nav-menu.active { right: 0; }
    .nav-toggle { display: flex; position: relative; z-index: 1001; }
    .hero-btns { flex-direction: column; align-items: center; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 1.8rem; }
    .about-stats { grid-template-columns: 1fr; }
}