/* ===== 0069 清新SaaS风 ===== */
:root {
    --sky-300: #7dd3fc;
    --sky-400: #38bdf8;
    --sky-500: #0ea5e9;
    --sky-600: #0284c7;
    --sky-700: #0369a1;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    scroll-behavior: smooth;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--gray-800); background: #fff; }

/* Top announcement bar */
.announce-bar {
    background: var(--sky-600); color: #fff; text-align: center;
    padding: 8px 16px; font-size: 0.85rem; font-weight: 500;
}
.announce-bar a { color: #fff; text-decoration: underline; font-weight: 700; }
.announce-bar a:hover { color: #bae6fd; }

/* Navbar */
.navbar {
    position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px); border-bottom: 1px solid var(--gray-200);
}
.nav-container {
    max-width: 1280px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between; height: 66px;
}
.nav-logo {
    font-size: 1.5rem; font-weight: 800; color: var(--gray-900); text-decoration: none;
    display: flex; align-items: center; gap: 8px;
}
.nav-logo span { color: var(--sky-500); }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
    color: var(--gray-600); text-decoration: none; font-weight: 500;
    font-size: 0.93rem; padding: 8px 14px; border-radius: 8px; transition: all 0.25s;
}
.nav-links a:hover { color: var(--sky-600); background: #f0f9ff; }
.nav-badge {
    display: inline-block; background: #dc2626; color: #fff;
    font-size: 0.65rem; padding: 2px 6px; border-radius: 4px;
    font-weight: 800; margin-left: 4px; vertical-align: super; letter-spacing: 0.5px;
}
.nav-cta-btn {
    background: var(--sky-500); color: #fff !important; padding: 10px 22px !important;
    border-radius: 50px !important; font-weight: 600 !important; margin-left: 8px;
    box-shadow: 0 4px 14px rgba(14,165,233,0.25);
}
.nav-cta-btn:hover { background: var(--sky-600) !important; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(14,165,233,0.35); }

/* Mobile */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 8px; }
.hamburger span { display: block; width: 26px; height: 2.5px; background: var(--gray-800); border-radius: 3px; transition: 0.3s; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.mobile-menu {
    display: none; position: fixed; top: 66px; left: 0; right: 0; bottom: 0;
    background: #fff; z-index: 999; flex-direction: column; padding-top: 12px;
}
.mobile-menu.active { display: flex; }
.mobile-menu a { color: var(--gray-800); font-size: 1.05rem; font-weight: 600; text-decoration: none; padding: 14px 24px; border-bottom: 1px solid var(--gray-100); }

/* Hero - centered full width with browser mockup */
.hero {
    text-align: center; padding: 80px 24px 60px; background: #fff;
}
.hero .hero-tag {
    display: inline-block; background: #f0f9ff; color: var(--sky-700);
    padding: 6px 16px; border-radius: 50px; font-weight: 600; font-size: 0.85rem; margin-bottom: 20px;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; color: var(--gray-900);
    line-height: 1.15; margin-bottom: 16px; max-width: 750px; margin-left: auto; margin-right: auto;
}
.hero h1 .underline-decor {
    position: relative;
}
.hero h1 .underline-decor::after {
    content: ''; position: absolute; bottom: 2px; left: 0; right: 0;
    height: 10px; background: rgba(14,165,233,0.2); z-index: -1;
    border-radius: 4px;
}
.hero p {
    font-size: 1.15rem; color: var(--gray-600); line-height: 1.8;
    max-width: 580px; margin: 0 auto 36px;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.btn-primary {
    background: var(--sky-500); color: #fff; padding: 14px 32px;
    border-radius: 8px; font-weight: 700; text-decoration: none;
    transition: all 0.3s; box-shadow: 0 6px 20px rgba(14,165,233,0.3); font-size: 1rem;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(14,165,233,0.4); }
.btn-outline {
    border: 2px solid var(--gray-300); color: var(--gray-700);
    padding: 14px 32px; border-radius: 8px; font-weight: 700;
    text-decoration: none; transition: all 0.3s; font-size: 1rem;
}
.btn-outline:hover { border-color: var(--sky-500); color: var(--sky-500); }

/* Browser mockup */
.browser-mockup {
    max-width: 900px; margin: 0 auto;
    background: #fff; border-radius: 12px; overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1), 0 0 0 1px var(--gray-200);
}
.browser-header {
    background: var(--gray-100); padding: 12px 16px;
    display: flex; align-items: center; gap: 8px;
}
.browser-dot { width: 12px; height: 12px; border-radius: 50%; }
.browser-dot.r { background: #ef4444; }
.browser-dot.y { background: #f59e0b; }
.browser-dot.g { background: #10b981; }
.browser-url {
    flex: 1; margin-left: 12px; background: #fff; border-radius: 6px;
    padding: 6px 12px; font-size: 0.78rem; color: var(--gray-600);
    display: flex; align-items: center; gap: 6px;
}
.browser-url i { color: var(--sky-500); font-size: 0.7rem; }
.browser-body img { width: 100%; display: block; }

/* Sections */
section { padding: 100px 24px; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; color: var(--sky-600); font-weight: 700;
    font-size: 0.85rem; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 14px;
}
.section-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 800; color: var(--gray-900); margin-bottom: 12px; }
.section-header p { color: var(--gray-600); font-size: 1.05rem; }
.container { max-width: 1280px; margin: 0 auto; }

/* Features - solid circle icons + top colored bar */
#features { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
    background: #fff; border-radius: 16px; padding: 0; overflow: hidden;
    box-shadow: 0 2px 16px rgba(0,0,0,0.05); border: 1px solid var(--gray-200);
    transition: all 0.35s ease;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.feature-card .card-bar {
    height: 4px;
}
.feature-card .card-bar.c1 { background: var(--sky-500); }
.feature-card .card-bar.c2 { background: #10b981; }
.feature-card .card-bar.c3 { background: #f59e0b; }
.feature-card .card-bar.c4 { background: #8b5cf6; }
.feature-card .card-bar.c5 { background: #ef4444; }
.feature-card .card-bar.c6 { background: #ec4899; }
.feature-card .card-body { padding: 28px 24px; text-align: center; }
.feature-icon-circle {
    width: 56px; height: 56px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; font-size: 1.3rem;
    margin: 0 auto 16px;
}
.feature-icon-circle.c1 { background: #e0f2fe; color: var(--sky-600); }
.feature-icon-circle.c2 { background: #d1fae5; color: #059669; }
.feature-icon-circle.c3 { background: #fef3c7; color: #d97706; }
.feature-icon-circle.c4 { background: #ede9fe; color: #7c3aed; }
.feature-icon-circle.c5 { background: #fee2e2; color: #dc2626; }
.feature-icon-circle.c6 { background: #fce7f3; color: #db2777; }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 8px; }
.feature-card p { color: var(--gray-600); font-size: 0.9rem; line-height: 1.6; }

/* Stats - dot pattern background */
#stats {
    background: #f8fafc;
    background-image: radial-gradient(circle, #cbd5e1 1px, transparent 1px);
    background-size: 20px 20px;
    position: relative;
}
#stats::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(0deg, rgba(248,250,252,0.9), rgba(248,250,252,0.9));
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; z-index: 1; }
.stat-card {
    background: #fff; border-radius: 16px; padding: 32px 20px; text-align: center;
    box-shadow: 0 2px 16px rgba(0,0,0,0.05); transition: all 0.3s;
}
.stat-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.stat-card .stat-num { font-size: 2.6rem; font-weight: 900; color: var(--sky-600); margin-bottom: 4px; }
.stat-card .stat-label { color: var(--gray-600); font-size: 0.95rem; font-weight: 500; }

/* Testimonials - embedded video play button */
#testimonials { background: #fff; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
    background: var(--gray-50); border-radius: 20px; padding: 28px;
    position: relative; overflow: hidden; transition: all 0.3s;
    border: 1px solid var(--gray-200);
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,0.06); }
.testimonial-card .play-btn-decor {
    position: absolute; top: 12px; right: 12px;
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(14,165,233,0.1); display: flex; align-items: center; justify-content: center;
    color: var(--sky-500); font-size: 0.8rem; transition: all 0.3s;
}
.testimonial-card:hover .play-btn-decor { background: var(--sky-500); color: #fff; }
.testimonial-card .stars { color: #f59e0b; margin-bottom: 12px; font-size: 0.95rem; }
.testimonial-card blockquote { font-size: 0.92rem; color: var(--gray-700); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.testimonial-card .author-row { display: flex; align-items: center; gap: 10px; }
.testimonial-card .author-row img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.testimonial-card .author-row .author { font-weight: 700; font-size: 0.9rem; color: var(--gray-900); }
.testimonial-card .author-row .role { font-size: 0.78rem; color: var(--gray-500); }

/* FAQ - left-right tabs */
#faq { background: var(--gray-50); }
.faq-tabs { display: grid; grid-template-columns: 280px 1fr; gap: 32px; max-width: 1000px; margin: 0 auto; }
.faq-tab-list { display: flex; flex-direction: column; gap: 6px; }
.faq-tab-btn {
    background: #fff; border: 1px solid var(--gray-200); border-radius: 10px;
    padding: 14px 18px; text-align: left; cursor: pointer; font-weight: 600;
    font-size: 0.93rem; color: var(--gray-700); transition: all 0.25s; font-family: inherit;
}
.faq-tab-btn:hover { border-color: var(--sky-300); color: var(--sky-600); }
.faq-tab-btn.active { background: var(--sky-500); color: #fff; border-color: var(--sky-500); box-shadow: 0 4px 14px rgba(14,165,233,0.25); }
.faq-panels { }
.faq-panel { display: none; background: #fff; border-radius: 16px; padding: 32px 28px; box-shadow: 0 2px 12px rgba(0,0,0,0.03); }
.faq-panel.active { display: block; }
.faq-panel h3 { font-size: 1.15rem; font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.faq-panel p { color: var(--gray-600); line-height: 1.8; font-size: 0.95rem; }

/* CTA - sky gradient */
#cta {
    background: linear-gradient(135deg, var(--sky-400), var(--sky-600));
    text-align: center;
}
#cta h2 { font-size: 2.2rem; font-weight: 900; color: #fff; margin-bottom: 12px; }
#cta p { color: rgba(255,255,255,0.88); margin-bottom: 32px; font-size: 1.05rem; max-width: 550px; margin-left: auto; margin-right: auto; line-height: 1.7; }
.btn-white {
    background: #fff; color: var(--sky-700); padding: 15px 40px;
    border-radius: 8px; font-weight: 700; font-size: 1.05rem;
    text-decoration: none; display: inline-block; transition: all 0.3s;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.2); }

/* Footer with app store buttons */
footer { background: var(--gray-900); color: rgba(255,255,255,0.7); padding: 60px 24px 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; max-width: 1280px; margin: 0 auto 40px; }
.footer-col h4 { color: #fff; font-size: 1.05rem; font-weight: 700; margin-bottom: 20px; }
.footer-col p { font-size: 0.9rem; line-height: 1.7; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.88rem; margin-bottom: 8px; transition: color 0.3s; }
.footer-col a:hover { color: var(--sky-400); }
.footer-store-btns { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.store-btn {
    display: flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
    padding: 10px 16px; border-radius: 10px; color: #fff; text-decoration: none;
    transition: all 0.3s; font-size: 0.85rem;
}
.store-btn:hover { background: rgba(255,255,255,0.15); }
.store-btn i { font-size: 1.5rem; }
.store-btn .store-text small { display: block; font-size: 0.7rem; color: rgba(255,255,255,0.5); }
.footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.85rem; max-width: 1280px; margin: 0 auto; }

/* Page hero */
.page-hero {
    padding: 80px 24px 50px; text-align: center;
    background: linear-gradient(180deg, #f0f9ff 0%, #fff 100%);
}
.page-hero h1 { font-size: 2rem; font-weight: 900; color: var(--gray-900); margin-bottom: 8px; }
.page-hero p { color: var(--gray-600); font-size: 1rem; }

/* Sub-page specific */
.download-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 800px; margin: 0 auto; }
.download-card {
    background: #fff; border-radius: 20px; padding: 36px; text-align: center;
    box-shadow: 0 4px 24px rgba(0,0,0,0.04); border: 1px solid var(--gray-200);
    transition: all 0.3s;
}
.download-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.06); }
.download-card .icon-big { font-size: 3rem; margin-bottom: 16px; }
.download-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }

.club-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.club-card {
    background: #fff; border-radius: 16px; padding: 28px; text-align: center;
    box-shadow: 0 2px 16px rgba(0,0,0,0.04); border: 1px solid var(--gray-200);
    transition: all 0.3s;
}
.club-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,0.06); }
.club-icon { font-size: 2.5rem; margin-bottom: 12px; }
.club-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.club-card .level { color: var(--sky-600); font-weight: 600; font-size: 0.85rem; margin-bottom: 8px; }
.club-card p { color: var(--gray-600); font-size: 0.85rem; line-height: 1.6; }

.contact-layout { display: grid; grid-template-columns: 1fr 1.5fr; gap: 32px; max-width: 900px; margin: 0 auto; }
.contact-info-card {
    background: linear-gradient(135deg, var(--sky-500), var(--sky-700));
    color: #fff; border-radius: 20px; padding: 36px 28px;
}
.contact-info-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 16px; }
.contact-info-card .info-item { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; }
.contact-info-card .info-item i { margin-top: 4px; color: rgba(255,255,255,0.8); }
.contact-form-card {
    background: #fff; border-radius: 20px; padding: 36px 28px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.04); border: 1px solid var(--gray-200);
}
.contact-form-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 5px; color: var(--gray-700); font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 12px 14px; border-radius: 10px;
    border: 1px solid var(--gray-300); font-size: 0.93rem; outline: none; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--sky-500); box-shadow: 0 0 0 3px rgba(14,165,233,0.08);
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid, .testimonials-grid, .club-grid { grid-template-columns: repeat(2, 1fr); }
    .faq-tabs { grid-template-columns: 1fr; }
    .faq-tab-list { flex-direction: row; flex-wrap: wrap; }
    .faq-tab-btn { flex: 1; min-width: 120px; text-align: center; font-size: 0.82rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .features-grid, .testimonials-grid, .club-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .download-cards { grid-template-columns: 1fr; }
    .browser-mockup { max-width: 100%; }
    section { padding: 64px 16px; }
    .hero { padding: 60px 16px 40px; }
    .hero h1 { font-size: 1.7rem; }
}