/* === 0054 - Blue Whale Ocean Theme === */
:root {
    --ocean: #1e40af;
    --ocean-dark: #1e3a8a;
    --ocean-light: #60a5fa;
    --wave: #3b82f6;
    --sky: #dbeafe;
    --foam: #eff6ff;
    --gray-blue: #94a3b8;
    --dark: #0f172a;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: #f0f5fa;
    color: #1e293b;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15,23,42,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--ocean-light);
}
.navbar-inner {
    max-width: 1280px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; height: 68px;
}
.nav-brand {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; font-size: 1.3rem; font-weight: 800;
    color: #fff;
}
.nav-brand i { color: var(--ocean-light); font-size: 1.7rem; }
.nav-links { display: flex; align-items: center; gap: 22px; list-style: none; }
.nav-links a {
    color: #cbd5e1; text-decoration: none; font-weight: 600;
    font-size: 0.9rem; transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ocean-light); }
.nav-btn {
    background: linear-gradient(135deg, var(--ocean), var(--wave));
    color: #fff !important; padding: 10px 22px; border-radius: 24px;
    font-weight: 700 !important;
}
.nav-btn:hover { background: linear-gradient(135deg, var(--ocean-dark), var(--ocean)); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* Wave Divider */
.wave-divider {
    position: absolute; bottom: 0; left: 0; width: 100%;
    overflow: hidden; line-height: 0;
}
.wave-divider svg { position: relative; display: block; width: calc(100% + 1.3px); height: 60px; }

/* Hero */
.hero {
    padding: 130px 24px 100px;
    background: linear-gradient(180deg, #0f172a 0%, #1e3a8a 60%, #1e40af 100%);
    position: relative; overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 70%, rgba(96,165,250,0.1) 0%, transparent 50%);
}
.hero-inner {
    max-width: 1280px; margin: 0 auto;
    display: flex; align-items: center; gap: 50px;
    position: relative; z-index: 1;
}
.hero-text { flex: 1; }
.hero-badge {
    display: inline-block; background: rgba(59,130,246,0.25);
    color: var(--ocean-light); padding: 6px 16px; border-radius: 20px;
    font-weight: 700; font-size: 0.85rem; letter-spacing: 2px; margin-bottom: 16px;
    border: 1px solid rgba(96,165,250,0.4);
}
.hero-text h1 { font-size: 3rem; font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 14px; }
.hero-text h1 .hl { color: var(--ocean-light); }
.hero-text p { font-size: 1.05rem; color: #b0c9e8; margin-bottom: 28px; line-height: 1.7; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-ocean {
    background: linear-gradient(135deg, var(--ocean-light), var(--wave));
    color: #fff; padding: 14px 30px; border-radius: 28px;
    font-weight: 700; text-decoration: none; transition: all 0.3s;
    display: inline-flex; align-items: center; gap: 6px;
}
.btn-ocean:hover { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(59,130,246,0.4); }
.btn-outline-ocean {
    background: transparent; color: #fff;
    padding: 14px 30px; border-radius: 28px;
    font-weight: 700; text-decoration: none; border: 2px solid rgba(255,255,255,0.4);
    transition: all 0.3s; display: inline-flex; align-items: center; gap: 6px;
}
.btn-outline-ocean:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }
.hero-img {
    flex: 0 0 400px; border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    overflow: hidden; border: 5px solid rgba(96,165,250,0.5);
    box-shadow: 0 20px 60px rgba(30,64,175,0.5);
}
.hero-img img { width: 100%; display: block; }

/* Wave Separation */
.hero-wave {
    position: absolute; bottom: -2px; left: 0; width: 100%; z-index: 2;
}
.hero-wave svg { display: block; }

/* Section Headers */
.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 {
    font-size: 2.4rem; font-weight: 900; color: var(--dark);
    position: relative; display: inline-block; padding-bottom: 12px;
}
.section-header h2::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 70px; height: 3px;
    background: linear-gradient(90deg, transparent, var(--wave), transparent);
    border-radius: 2px;
}
.section-header p { color: var(--gray-blue); margin-top: 8px; }

/* Features - Bubble Cards */
.features { padding: 80px 24px; background: #fff; }
.features-inner { max-width: 1280px; margin: 0 auto; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.feat-bubble {
    background: linear-gradient(135deg, var(--foam), #fff);
    border: 2px solid #dbeafe; border-radius: 60% 40% 55% 45% / 50% 55% 45% 50%;
    padding: 40px 30px; text-align: center; transition: all 0.4s ease;
    cursor: pointer; position: relative;
}
.feat-bubble:hover {
    border-radius: 20px; border-color: var(--ocean);
    transform: translateY(-6px); box-shadow: 0 20px 40px rgba(30,64,175,0.15);
}
.feat-bubble-icon {
    width: 64px; height: 64px; background: linear-gradient(135deg, var(--ocean), var(--wave));
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px; font-size: 1.6rem; color: #fff;
}
.feat-bubble h3 { font-size: 1.2rem; font-weight: 800; color: var(--dark); margin-bottom: 8px; }
.feat-bubble p { color: #64748b; font-size: 0.93rem; line-height: 1.6; }

/* Stats */
.stats {
    padding: 60px 24px;
    background: linear-gradient(135deg, var(--ocean-dark), var(--ocean));
    position: relative;
}
.stats::before {
    content: ''; position: absolute; inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><circle cx="10" cy="10" r="1.5" fill="rgba(255,255,255,0.08)"/><circle cx="30" cy="16" r="2" fill="rgba(255,255,255,0.06)"/><circle cx="50" cy="8" r="1.8" fill="rgba(255,255,255,0.07)"/><circle cx="70" cy="14" r="1.3" fill="rgba(255,255,255,0.08)"/><circle cx="90" cy="10" r="2.2" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 200px 40px; opacity: 0.5;
}
.stats-inner { max-width: 1280px; margin: 0 auto; position: relative; z-index: 1; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat-item .stat-num { display: block; font-size: 2.8rem; font-weight: 900; color: #fff; line-height: 1; }
.stat-item .stat-label { color: rgba(255,255,255,0.75); font-size: 0.95rem; margin-top: 6px; }

/* Testimonials */
.testimonials { padding: 80px 24px; background: var(--foam); }
.testimonials-inner { max-width: 1280px; margin: 0 auto; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.testi-card {
    background: #fff; border-radius: 20px; padding: 28px;
    border: 1px solid #dbeafe; transition: all 0.3s;
}
.testi-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(30,64,175,0.1); }
.testi-stars { margin-bottom: 10px; }
.testi-stars i { color: #3b82f6; font-size: 0.9rem; }
.testi-card > p { color: #4b5563; line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.testi-author { display: flex; align-items: center; gap: 10px; }
.testi-author img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 2px solid var(--ocean-light); }
.testi-author strong { color: var(--dark); font-size: 0.9rem; display: block; }
.testi-author span { color: #94a3b8; font-size: 0.8rem; }

/* FAQ - Wave borders */
.faq { padding: 80px 24px; background: #fff; position: relative; }
.faq-inner { max-width: 800px; margin: 0 auto; }
.faq-item {
    margin-bottom: 12px; border-radius: 16px; overflow: hidden;
    border: 2px solid #dbeafe; transition: all 0.3s;
}
.faq-item.active { border-color: var(--ocean); box-shadow: 0 4px 16px rgba(30,64,175,0.08); }
.faq-toggle {
    width: 100%; padding: 17px 22px;
    display: flex; align-items: center; justify-content: space-between;
    background: var(--foam); border: none; cursor: pointer;
    font-size: 1rem; font-weight: 700; color: var(--dark); text-align: left;
    transition: background 0.3s;
}
.faq-item.active .faq-toggle { background: var(--ocean); color: #fff; }
.faq-toggle i { transition: transform 0.3s; color: var(--ocean); }
.faq-item.active .faq-toggle i { transform: rotate(180deg); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 18px 22px; color: #4b5563; line-height: 1.7; }

/* CTA */
.cta {
    padding: 80px 24px;
    background: linear-gradient(135deg, #0f172a 0%, var(--ocean-dark) 50%, var(--ocean) 100%);
    text-align: center; position: relative; overflow: hidden;
}
.cta::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(96,165,250,0.1) 0%, transparent 70%);
}
.cta-inner { max-width: 700px; margin: 0 auto; position: relative; z-index: 1; }
.cta h2 { font-size: 2.4rem; font-weight: 900; color: #fff; margin-bottom: 12px; }
.cta p { color: rgba(255,255,255,0.8); margin-bottom: 28px; font-size: 1.05rem; }
.cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta .btn-ocean { background: #fff; color: var(--ocean); }
.cta .btn-ocean:hover { background: var(--foam); }
.cta .btn-outline-ocean { border-color: #fff; color: #fff; }
.cta .btn-outline-ocean:hover { background: #fff; color: var(--ocean); }

/* Footer */
.footer {
    background: #0f172a; color: #94a3b8; padding: 50px 24px 30px;
}
.footer-inner { max-width: 1280px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 30px; margin-bottom: 36px; }
.footer-col h4 { color: #fff; font-size: 1.05rem; margin-bottom: 14px; }
.footer-col p { font-size: 0.9rem; line-height: 1.6; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; transition: color 0.3s; }
.footer-col ul a:hover { color: var(--ocean-light); }
.footer-col i.fa-weixin, .footer-col i.fa-envelope, .footer-col i.fa-clock, .footer-col i.fa-phone { color: var(--ocean-light); margin-right: 6px; width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(148,163,184,0.15); padding-top: 18px; text-align: center; font-size: 0.85rem; }

/* Inner Page Hero */
.page-hero {
    padding: 130px 24px 60px;
    background: linear-gradient(180deg, #0f172a, var(--ocean-dark));
    text-align: center;
}
.page-hero h1 { font-size: 2.6rem; font-weight: 900; color: #fff; }
.page-hero h1 span { color: var(--ocean-light); }
.page-hero p { color: #94a3b8; margin-top: 8px; }

/* Download Page */
.dl-section { padding: 60px 24px; background: #fff; }
.dl-inner { max-width: 1000px; margin: 0 auto; }
.dl-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.dl-card {
    background: var(--foam); border: 2px solid #dbeafe;
    border-radius: 24px; padding: 36px 28px; text-align: center;
    transition: all 0.3s;
}
.dl-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(30,64,175,0.15); border-color: var(--ocean); }
.dl-card-icon { font-size: 2.8rem; color: var(--ocean); margin-bottom: 14px; }
.dl-card h3 { font-size: 1.3rem; font-weight: 800; color: var(--dark); margin-bottom: 8px; }
.dl-card p { color: #64748b; font-size: 0.9rem; margin-bottom: 18px; line-height: 1.5; }
.dl-btn {
    display: inline-block; background: linear-gradient(135deg, var(--ocean), var(--wave));
    color: #fff; padding: 12px 28px; border-radius: 24px;
    text-decoration: none; font-weight: 700; transition: all 0.3s;
}
.dl-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(30,64,175,0.35); }

/* About Page */
.about-section { padding: 60px 24px; background: #fff; }
.about-inner { max-width: 900px; margin: 0 auto; }
.about-content { line-height: 1.9; color: #4b5563; }
.about-content h3 { color: var(--dark); font-size: 1.25rem; margin: 28px 0 10px; }
.about-content h3 i { color: var(--ocean); margin-right: 8px; }
.about-content p { margin-bottom: 14px; }
.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.value-card {
    background: var(--foam); border-radius: 24px; padding: 24px;
    text-align: center; border: 2px solid #dbeafe;
}
.value-card i { font-size: 1.8rem; color: var(--ocean); margin-bottom: 10px; }
.value-card h4 { font-weight: 800; color: var(--dark); margin-bottom: 6px; }
.value-card p { font-size: 0.85rem; color: #64748b; }

/* Contact Page */
.contact-section { padding: 60px 24px; background: #fff; }
.contact-inner { max-width: 1000px; margin: 0 auto; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.cinfo-cards { display: flex; flex-direction: column; gap: 16px; }
.cinfo-card {
    display: flex; align-items: flex-start; gap: 14px;
    background: var(--foam); padding: 20px; border-radius: 16px;
    border: 1px solid #dbeafe;
}
.cinfo-card i { font-size: 1.5rem; color: var(--ocean); margin-top: 3px; }
.cinfo-card h4 { font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.cinfo-card p { color: #64748b; font-size: 0.9rem; }
.contact-form { background: var(--foam); border: 2px solid #dbeafe; border-radius: 20px; padding: 30px; }
.contact-form h3 { font-weight: 800; color: var(--dark); margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; color: #4b5563; margin-bottom: 6px; font-size: 0.9rem; }
.form-group input, .form-group textarea {
    width: 100%; padding: 12px 16px; border: 2px solid #dbeafe;
    border-radius: 12px; font-size: 0.95rem; outline: none;
    transition: border-color 0.3s; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--ocean); }
.form-group textarea { min-height: 120px; resize: vertical; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-img { flex: 0 0 auto; max-width: 280px; margin: 0 auto; }
    .hero-text h1 { font-size: 2.2rem; }
    .features-grid, .testimonials-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .dl-cards, .about-values { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .feat-bubble { border-radius: 24px; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}