/* --- 1. Variables --- */
:root {
    --primary: #f97316;      /* 活力橙 */
    --secondary: #4f46e5;    /* 深紫 */
    --gradient: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
    
    --dark: #111827;
    --text: #374151;
    --light: #f9fafb;
    --white: #ffffff;
    
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
    --radius: 16px;
    
    --font-main: 'Inter', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-main); color: var(--text); background: #fff; line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.bg-soft { background: var(--light); }
.center { text-align: center; }

/* Typography */
h1, h2, h3, h4 { color: var(--dark); font-weight: 800; letter-spacing: -0.02em; }
.sec-head { margin-bottom: 60px; }
.sec-head h2 { font-size: 36px; margin-bottom: 10px; }
.sec-head p { font-size: 18px; color: #6b7280; }

/* Buttons */
.btn-primary-sm {
    background: var(--dark); color: #fff; padding: 8px 20px;
    border-radius: 8px; font-weight: 600; font-size: 14px;
}
.btn-primary-sm:hover { background: var(--primary); }

.btn-gradient {
    background: var(--gradient); color: #fff; padding: 12px 32px;
    border-radius: 50px; font-weight: 600; box-shadow: 0 5px 15px rgba(249, 115, 22, 0.3);
}
.btn-gradient:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4); }

.btn-glass {
    background: rgba(255,255,255,0.8); backdrop-filter: blur(10px);
    color: var(--dark); padding: 12px 32px; border-radius: 50px; font-weight: 600;
    border: 1px solid rgba(0,0,0,0.05);
}
.btn-glass:hover { background: #fff; }

.btn-outline-pill {
    border: 2px solid var(--secondary); color: var(--secondary);
    padding: 10px 30px; border-radius: 50px; font-weight: 600; display: inline-block; margin-top: 30px;
}
.btn-outline-pill:hover { background: var(--secondary); color: #fff; }

.btn-more-card {
    display: block; width: 100%; text-align: center; padding: 12px 0;
    background: var(--light); color: var(--secondary); border-radius: 8px;
    font-weight: 600; font-size: 13px; margin-top: 20px;
}
.btn-more-card:hover { background: #e0e7ff; color: var(--secondary); }

.btn-login { font-weight: 600; font-size: 14px; }
.btn-login:hover { color: var(--primary); }

/* --- 2. Navbar --- */
#navbar {
    position: fixed; top: 0; width: 100%; height: 80px; z-index: 1000;
    background: rgba(255,255,255,0.9); backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
.nav-box { display: flex; justify-content: space-between; align-items: center; height: 100%; }

.logo { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 800; color: var(--dark); }
.logo-icon { color: var(--primary); font-size: 22px; }

.nav-links { display: flex; gap: 40px; }
.nav-links a { font-weight: 500; font-size: 15px; color: var(--text); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

.nav-right { display: flex; align-items: center; gap: 20px; }
.mobile-menu { display: none; font-size: 24px; cursor: pointer; }

/* --- 3. Hero --- */
.hero { position: relative; height: 85vh; min-height: 600px; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: #fff; z-index: -2;
}
.hero-bg::before {
    content: ''; position: absolute; top: -20%; right: -10%; width: 60%; height: 100%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.05) 0%, rgba(255,255,255,0) 70%);
}

.hero-content { display: flex; align-items: center; gap: 60px; z-index: 1; }
.hero-text { flex: 1; }
.hero-img { flex: 1; position: relative; }

.pill-new { display: inline-block; background: #fff7ed; color: var(--primary); padding: 6px 14px; border-radius: 30px; font-size: 12px; font-weight: 700; margin-bottom: 20px; }
.hero h1 { font-size: 56px; line-height: 1.1; margin-bottom: 20px; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 18px; color: #6b7280; margin-bottom: 40px; max-width: 500px; }
.hero-btns { display: flex; gap: 15px; margin-bottom: 40px; }

.trust-bar { font-size: 13px; color: #9ca3af; display: flex; align-items: center; gap: 20px; }
.trust-bar i { font-size: 24px; color: #d1d5db; }

.main-visual { border-radius: 20px; box-shadow: var(--shadow); }
.float-card {
    position: absolute; background: #fff; padding: 15px 20px; border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1); display: flex; align-items: center; gap: 15px;
    animation: float 4s ease-in-out infinite;
}
.float-card i { font-size: 24px; color: var(--primary); }
.float-card strong { display: block; font-size: 18px; line-height: 1.2; }
.float-card span { font-size: 12px; color: #6b7280; }
.top-right { top: 20px; right: -20px; }
.bottom-left { bottom: 40px; left: -30px; animation-delay: 2s; }

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* --- 4. Solutions --- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 220px); gap: 24px; }
.sol-box {
    background: #fff; padding: 30px; border-radius: var(--radius);
    border: 1px solid #f3f4f6; transition: 0.3s;
    display: flex; flex-direction: column; justify-content: space-between;
}
.sol-box:hover { border-color: transparent; box-shadow: var(--shadow); transform: translateY(-5px); }

.large { grid-column: span 2; grid-row: span 2; background: #fff7ed; border: none; }
.wide { grid-column: span 2; }

.icon-sq { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff; margin-bottom: 20px; }
.orange { background: var(--primary); }
.blue { background: #3b82f6; }
.purple { background: var(--secondary); }

.sol-box h3 { font-size: 20px; margin-bottom: 10px; }
.sol-box p { font-size: 14px; color: #6b7280; }
.link-arr { color: var(--primary); font-weight: 600; font-size: 14px; margin-top: 20px; display: inline-block; }

.box-flex { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.visual-icon { font-size: 40px; color: #e5e7eb; }

/* --- 5. Feature --- */
.feature-wrap { display: flex; align-items: center; gap: 80px; }
.feat-img { flex: 1; }
.feat-img img { border-radius: 20px; box-shadow: var(--shadow); }
.feat-text { flex: 1; }

.sub-head { color: var(--secondary); font-weight: 700; font-size: 12px; letter-spacing: 1px; display: block; margin-bottom: 10px; }
.feat-text h2 { font-size: 42px; margin-bottom: 20px; }
.feat-text p { font-size: 16px; color: #6b7280; margin-bottom: 30px; }

.feat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.feat-list i { font-size: 24px; color: var(--primary); margin-bottom: 10px; }
.feat-list h4 { font-size: 16px; margin-bottom: 5px; }
.feat-list p { font-size: 13px; margin: 0; }

/* --- 6. News --- */
.news-cols-modern { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-card {
    background: #fff; padding: 30px; border-radius: var(--radius);
    border: 1px solid #f3f4f6; transition: 0.3s;
}
.news-card:hover { border-color: transparent; box-shadow: var(--shadow); }

.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 25px; }
.icon-dot { width: 10px; height: 10px; border-radius: 50%; }
.card-head h4 { font-size: 18px; margin: 0; }

.news-list-dash li { margin-bottom: 15px; }
.news-list-dash a { display: flex; align-items: flex-start; gap: 10px; line-height: 1.4; }
.news-list-dash .title { font-size: 14px; font-weight: 500; color: var(--text); transition: 0.2s; }
.news-list-dash a:hover .title { color: var(--primary); }
.news-list-dash .date { font-size: 12px; color: #9ca3af; margin-top: 4px; display: block; }
.tag { font-size: 10px; padding: 2px 6px; border-radius: 4px; color: #fff; font-weight: 700; white-space: nowrap; }
.new { background: var(--primary); }
.hot { background: #ef4444; }

/* --- 7. Footer --- */
footer { background: #fff; padding: 80px 0 30px; border-top: 1px solid #f3f4f6; }
.footer-cont { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.f-left h3 { font-size: 20px; margin-bottom: 5px; }
.f-left p { font-size: 14px; color: #6b7280; }

.f-links a { margin: 0 20px; font-weight: 500; font-size: 14px; }
.f-links a:hover { color: var(--primary); }
.f-social a { margin-left: 20px; font-size: 20px; color: #d1d5db; }
.f-social a:hover { color: var(--primary); }

.f-bottom { text-align: center; font-size: 12px; color: #9ca3af; border-top: 1px solid #f9fafb; padding-top: 30px; }

/* Responsive */
@media (max-width: 992px) {
    .hero { height: auto; padding: 120px 0; }
    .hero-content { flex-direction: column; text-align: center; }
    .hero-btns { justify-content: center; }
    .trust-bar { justify-content: center; margin-top: 30px; }
    .hero-img { width: 100%; margin-top: 50px; }
    .float-card { display: none; }
    
    .sol-grid, .news-cols-modern { grid-template-columns: 1fr; grid-template-rows: auto; }
    .large, .wide { grid-column: auto; grid-row: auto; }
    .feature-wrap { flex-direction: column; }
    .nav-links, .nav-right .btn-login, .nav-right .btn-primary-sm { display: none; }
    .mobile-menu { display: block; }
    .footer-cont { flex-direction: column; gap: 30px; }
}