/* Sunset Orange-Purple Gradient Style - Floating Islands Layout */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;800&family=Noto+Sans+SC:wght@300;400;700;900&display=swap');

:root {
    --sunset-orange: #ff7e5f;
    --sunset-peach: #feb47b;
    --sunset-purple: #861657;
    --sunset-dark: #320d3e;
    --island-bg: rgba(255, 255, 255, 0.92);
    --island-border: rgba(255, 255, 255, 0.5);
    --text-dark: #2d1b36;
    --text-muted: #6b5a74;
    --font-en: 'Poppins', sans-serif;
    --font-cn: 'Noto Sans SC', sans-serif;
}

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

body {
    background: linear-gradient(135deg, var(--sunset-orange) 0%, var(--sunset-peach) 40%, var(--sunset-purple) 100%);
    background-attachment: fixed;
    color: var(--text-dark);
    font-family: var(--font-cn);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4, .font-en { font-family: var(--font-en); }
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; height: auto; display: block; border-radius: 20px; }

/* 1. App Container (Sidebar + Content) */
.app-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    gap: 40px;
    align-items: flex-start;
}

/* 2. Sidebar Island */
.sidebar-island {
    width: 280px;
    position: sticky;
    top: 40px;
    height: calc(100vh - 80px);
    background: var(--island-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--island-border);
    border-radius: 40px;
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(134, 22, 87, 0.2);
    z-index: 100;
}

.sb-brand {
    font-size: 1.6rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--sunset-orange), var(--sunset-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 50px;
    text-align: center;
}

.sb-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex: 1;
}
.sb-nav a {
    padding: 12px 20px;
    border-radius: 15px;
    color: var(--text-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 15px;
}
.sb-nav a::before {
    content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--sunset-peach); opacity: 0; transition: 0.3s;
}
.sb-nav a:hover, .sb-nav a.active {
    background: rgba(255, 126, 95, 0.1);
    color: var(--sunset-purple);
}
.sb-nav a:hover::before, .sb-nav a.active::before { opacity: 1; }

.sb-bottom { margin-top: auto; display: flex; flex-direction: column; gap: 15px; }
.sb-lang { text-align: center; font-size: 0.9rem; color: var(--text-muted); font-weight: 600; }
.btn-sunset {
    background: linear-gradient(45deg, var(--sunset-orange), var(--sunset-purple));
    color: #fff;
    padding: 15px;
    border-radius: 20px;
    text-align: center;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(255, 126, 95, 0.3);
    transition: 0.3s;
    border: none;
    cursor: pointer;
}
.btn-sunset:hover { transform: translateY(-3px); box-shadow: 0 15px 25px rgba(255, 126, 95, 0.5); }

/* 3. Content Stream (Right Side) */
.content-stream {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.island {
    background: var(--island-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--island-border);
    border-radius: 40px;
    padding: 60px;
    box-shadow: 0 20px 50px rgba(134, 22, 87, 0.15);
}

.section-title {
    font-size: 2.2rem;
    color: var(--sunset-purple);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.section-title::before {
    content: ''; display: block; width: 30px; height: 4px; background: var(--sunset-orange); border-radius: 2px;
}

/* 4. Hero Island */
.hero-island {
    display: flex;
    align-items: center;
    gap: 50px;
    padding: 80px 60px;
}
.hero-text { flex: 1; }
.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--sunset-dark);
}
.hero-text p { font-size: 1.15rem; color: var(--text-muted); margin-bottom: 40px; }
.hero-actions { display: flex; gap: 20px; margin-bottom: 30px; }
.btn-outline {
    background: transparent;
    border: 2px solid var(--sunset-purple);
    color: var(--sunset-purple);
    padding: 13px 30px;
    border-radius: 20px;
    font-weight: 700;
}
.btn-outline:hover { background: rgba(134, 22, 87, 0.05); }

.trust-badges { display: flex; gap: 20px; font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }
.trust-badges span { display: flex; align-items: center; gap: 5px; }
.trust-badges span::before { content: '✦'; color: var(--sunset-orange); }

.hero-visual { flex: 1; }
.hero-visual img { box-shadow: 0 20px 40px rgba(134, 22, 87, 0.2); }

/* 5. Stats Mini Islands */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.stat-mini-island {
    background: var(--island-bg);
    border-radius: 30px;
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--island-border);
    box-shadow: 0 15px 30px rgba(134, 22, 87, 0.1);
    transition: 0.3s;
}
.stat-mini-island:hover { transform: translateY(-10px); }
.stat-mini-island h3 { font-size: 2.5rem; color: var(--sunset-orange); line-height: 1; margin-bottom: 10px; }
.stat-mini-island p { font-size: 0.9rem; color: var(--text-muted); font-weight: 600; }

/* 6. Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.feature-box {
    padding: 30px;
    background: rgba(255,255,255,0.5);
    border-radius: 30px;
    border: 1px solid rgba(255,255,255,0.8);
    transition: 0.3s;
}
.feature-box:hover { background: #fff; box-shadow: 0 15px 30px rgba(134, 22, 87, 0.1); }
.feature-box img { width: 70px; height: 70px; margin-bottom: 20px; }
.feature-box h3 { font-size: 1.4rem; color: var(--sunset-dark); margin-bottom: 15px; }
.feature-box p { color: var(--text-muted); font-size: 0.95rem; }

/* 7. Nodes Carousel */
.nodes-carousel {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--sunset-peach) transparent;
}
.nodes-carousel::-webkit-scrollbar { height: 6px; }
.nodes-carousel::-webkit-scrollbar-thumb { background: var(--sunset-peach); border-radius: 10px; }
.node-card {
    min-width: 200px;
    background: linear-gradient(135deg, rgba(255,126,95,0.1), rgba(134,22,87,0.1));
    padding: 30px;
    border-radius: 25px;
    border: 1px solid rgba(255,255,255,0.8);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.nc-city { font-size: 1.2rem; font-weight: 700; color: var(--sunset-dark); }
.nc-ping { font-family: var(--font-en); color: var(--sunset-purple); font-weight: 600; }

/* 8. Reviews Masonry */
.reviews-masonry {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.review-item {
    background: #fff;
    padding: 40px;
    border-radius: 30px;
    box-shadow: 0 10px 20px rgba(134, 22, 87, 0.05);
}
.review-item:nth-child(3) { grid-column: 1 / -1; } /* Make 3rd review full width */
.ri-stars { color: var(--sunset-orange); margin-bottom: 15px; font-size: 1.2rem; }
.ri-text { font-size: 1.1rem; color: var(--text-dark); margin-bottom: 20px; font-style: italic; }
.ri-author { font-weight: 700; color: var(--sunset-purple); }
.ri-author span { font-weight: 400; color: var(--text-muted); font-size: 0.9rem; margin-left: 10px; }

/* 9. Pricing Overlap */
.pricing-overlap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}
.price-panel {
    background: #fff;
    padding: 50px 40px;
    border-radius: 30px;
    width: 32%;
    text-align: center;
    box-shadow: 0 15px 30px rgba(134, 22, 87, 0.05);
    transition: 0.3s;
}
.price-panel.pro {
    width: 36%;
    background: linear-gradient(135deg, var(--sunset-dark), var(--sunset-purple));
    color: #fff;
    padding: 70px 40px;
    box-shadow: 0 25px 50px rgba(50, 13, 62, 0.4);
    z-index: 2;
}
.price-panel.pro .text-muted { color: rgba(255,255,255,0.7); }
.price-panel.pro .btn-sunset { background: #fff; color: var(--sunset-purple); box-shadow: none; }

.pp-name { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; }
.pp-price { font-size: 3.5rem; font-weight: 900; margin-bottom: 30px; line-height: 1; }
.pp-price span { font-size: 1rem; font-weight: 400; }
.pp-features { list-style: none; text-align: left; margin-bottom: 40px; }
.pp-features li { padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,0.05); font-size: 0.95rem; }
.price-panel.pro .pp-features li { border-bottom-color: rgba(255,255,255,0.1); }
.pp-features li::before { content: '✓'; color: var(--sunset-orange); margin-right: 10px; font-weight: bold; }

/* 10. FAQ & Footer */
.faq-list { display: flex; flex-direction: column; gap: 20px; }
.faq-box { background: rgba(255,255,255,0.5); padding: 30px; border-radius: 20px; }
.faq-q { font-size: 1.1rem; font-weight: 700; color: var(--sunset-dark); margin-bottom: 10px; }
.faq-a { color: var(--text-muted); font-size: 0.95rem; }

.footer-island {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.foot-brand { font-size: 1.8rem; font-weight: 900; color: var(--sunset-purple); margin-bottom: 20px; }
.foot-desc { color: var(--text-muted); font-size: 0.95rem; }
.foot-col h4 { color: var(--sunset-dark); margin-bottom: 20px; }
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 10px; }
.foot-col a { color: var(--text-muted); }
.foot-col a:hover { color: var(--sunset-orange); }
.foot-copy { grid-column: 1 / -1; text-align: center; padding-top: 30px; border-top: 1px solid rgba(0,0,0,0.1); color: var(--text-muted); font-size: 0.85rem; margin-top: 20px; }

/* Subpages */
.sub-hero { text-align: center; padding: 60px 40px; }
.sub-hero h1 { font-size: 3.5rem; color: var(--sunset-dark); margin-bottom: 20px; }
.sub-hero p { font-size: 1.2rem; color: var(--text-muted); }

.dl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.dl-card { background: rgba(255,255,255,0.5); padding: 50px; border-radius: 30px; text-align: center; border: 1px solid rgba(255,255,255,0.8); }
.dl-icon { font-size: 4rem; margin-bottom: 20px; }
.dl-card h3 { font-size: 1.8rem; color: var(--sunset-dark); margin-bottom: 15px; }
.dl-card p { color: var(--text-muted); margin-bottom: 30px; }

.help-layout { display: grid; grid-template-columns: 250px 1fr; gap: 50px; }
.help-nav { display: flex; flex-direction: column; gap: 15px; position: sticky; top: 40px; }
.help-nav a { padding: 15px 20px; background: rgba(255,255,255,0.5); border-radius: 15px; color: var(--text-muted); font-weight: 600; }
.help-nav a.active, .help-nav a:hover { background: var(--sunset-purple); color: #fff; }
.help-doc { margin-bottom: 40px; }
.help-doc h3 { font-size: 1.8rem; color: var(--sunset-orange); margin-bottom: 20px; }
.help-doc p, .help-doc li { color: var(--text-muted); margin-bottom: 15px; font-size: 1.05rem; }
.help-doc ul { padding-left: 20px; }

/* Responsive */
@media (max-width: 1200px) {
    .app-container { flex-direction: column; }
    .sidebar-island { width: 100%; position: static; height: auto; flex-direction: row; align-items: center; justify-content: space-between; padding: 20px 40px; border-radius: 30px; }
    .sb-brand { margin-bottom: 0; }
    .sb-nav { flex-direction: row; flex: 0; }
    .sb-bottom { margin-top: 0; flex-direction: row; align-items: center; }
    .hero-island { flex-direction: column; text-align: center; }
    .hero-actions, .trust-badges { justify-content: center; }
}
@media (max-width: 992px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-overlap { flex-direction: column; }
    .price-panel, .price-panel.pro { width: 100%; padding: 50px 40px; }
    .footer-island { grid-template-columns: 1fr 1fr; }
    .help-layout { grid-template-columns: 1fr; }
    .help-nav { position: static; flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 768px) {
    .sidebar-island { flex-direction: column; gap: 20px; }
    .sb-nav { display: none; } /* Hide nav links on mobile, keep brand and button */
    .island { padding: 40px 20px; }
    .hero-text h1 { font-size: 3rem; }
    .features-grid, .reviews-masonry, .dl-grid { grid-template-columns: 1fr; }
    .review-item:nth-child(3) { grid-column: auto; }
    .footer-island { grid-template-columns: 1fr; text-align: center; }
}