@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&display=swap');

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

:root {
  --bg: #ffffff; --fg: #212121; --primary: #ff8c00; --primary-fg: #ffffff;
  --muted: #f5f5f4; --muted-fg: #737373; --border: #e5e5e5;
  --green: #22c55e; --radius: 0.5rem;
  --orange-light: #fff7ed; --orange-dark: #cc5500;
  --hero-gradient: linear-gradient(135deg, #fff7ed 0%, #ffffff 100%);
  --orange-gradient: linear-gradient(135deg, #ff8c00, #f5a623);
  --shadow-orange: 0 4px 20px -4px rgba(255,140,0,0.3);
}

body { font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--fg); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }

/* Header */
.header { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 1.25rem; font-weight: 700; }
.nav { display: flex; align-items: center; gap: 2rem; }
.nav a { font-size: 0.875rem; font-weight: 500; transition: color 0.2s; }
.nav a:hover, .nav a.active { color: var(--primary); }
.mobile-toggle { display: none; font-size: 1.5rem; color: var(--fg); }
.mobile-nav { display: none; background: var(--bg); border-top: 1px solid var(--border); padding: 1rem; }
.mobile-nav.open { display: block; }
.mobile-nav a { display: block; padding: 0.5rem 0; font-size: 0.875rem; font-weight: 500; }

/* Footer */
.footer { background: var(--fg); color: var(--primary-fg); padding: 3rem 0; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; font-size: 0.875rem; }
.footer-links h4 { font-weight: 600; margin-bottom: 0.75rem; }
.footer-links li { margin-bottom: 0.5rem; opacity: 0.7; }
.footer-links li:hover { opacity: 1; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 2rem; padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; opacity: 0.5; }
.social-icons { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
.social-icons span { width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; opacity: 0.7; cursor: pointer; }

/* Buttons */
.btn-primary { background: var(--orange-gradient); color: var(--primary-fg); padding: 0.75rem 2rem; border-radius: 9999px; font-weight: 500; box-shadow: var(--shadow-orange); transition: opacity 0.2s; display: inline-block; }
.btn-primary:hover { opacity: 0.9; }
.btn-outline { border: 1px solid var(--border); padding: 0.75rem 2rem; border-radius: 9999px; font-weight: 500; transition: background 0.2s; display: inline-block; }
.btn-outline:hover { background: var(--muted); }

/* Sections */
.section { padding: 4rem 0; }
.section-alt { background: rgba(245,245,244,0.3); }
.section-title { font-size: 1.875rem; font-weight: 700; text-align: center; margin-bottom: 3rem; }
.text-gradient { background: linear-gradient(90deg, #ff8c00, #f5a623); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--muted-fg); }
.text-green { color: var(--green); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.leading-relaxed { line-height: 1.75; }

/* Hero */
.hero { background: var(--hero-gradient); padding: 4rem 0 6rem; }
.hero-flex { display: flex; align-items: center; gap: 3rem; }
.hero-content { flex: 1; }
.hero-content h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.hero-content .subtitle { font-size: 1.5rem; font-weight: 600; margin-bottom: 1.5rem; }
.hero-img { flex: 1; display: flex; justify-content: center; }
.hero-img img { max-width: 28rem; }
.feature-list { margin: 1.5rem 0; }
.feature-list li { display: flex; align-items: flex-start; gap: 0.5rem; margin-bottom: 0.75rem; color: var(--muted-fg); }
.feature-list img { width: 20px; height: 20px; margin-top: 2px; flex-shrink: 0; }
.hero-buttons { display: flex; gap: 1rem; margin: 1.5rem 0; }
.free-trial-badge img { height: 40px; }
.guarantee { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--green); }
.guarantee img { width: 20px; height: 20px; }

/* Cards grid */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.card { background: var(--bg); border-radius: 1rem; padding: 2rem; text-align: center; border: 1px solid var(--border); transition: box-shadow 0.3s; }
.card:hover { box-shadow: 0 10px 30px -10px rgba(0,0,0,0.1); }
.card img { width: 64px; height: 64px; margin: 0 auto 1rem; }
.card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 0.5rem; }
.card p { font-size: 0.875rem; color: var(--muted-fg); }

/* Stats */
.stats { display: flex; justify-content: center; gap: 4rem; padding: 2rem 0; }
.stat-item { text-align: center; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-label { color: var(--muted-fg); margin-top: 0.25rem; }

/* Why choose items */
.why-item { display: flex; align-items: flex-start; gap: 1rem; background: var(--bg); border-radius: 1rem; padding: 1.5rem; border: 1px solid var(--border); margin-bottom: 1rem; }
.why-item img { width: 48px; height: 48px; flex-shrink: 0; }
.why-item h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.5rem; }
.why-item p { font-size: 0.875rem; color: var(--muted-fg); line-height: 1.75; }

/* Why use - alternating */
.why-use-item { display: flex; align-items: center; gap: 2rem; margin-bottom: 3rem; }
.why-use-item.reverse { flex-direction: row-reverse; }
.why-use-content { flex: 1; }
.why-use-content .icon-title { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.why-use-content .icon-title img { width: 32px; height: 32px; }
.why-use-content .icon-title h3 { font-size: 1.25rem; font-weight: 700; }
.why-use-content .sub { font-weight: 500; margin-bottom: 0.5rem; }
.why-use-img { flex: 1; display: flex; justify-content: center; }
.why-use-img img { width: 192px; height: 192px; object-fit: contain; opacity: 0.3; }

/* Simple operation */
.simple-op { display: flex; align-items: center; gap: 2rem; margin-top: 4rem; }
.simple-op img { max-width: 28rem; width: 100%; }
.simple-op ul li { margin-bottom: 0.5rem; font-size: 0.875rem; color: var(--muted-fg); line-height: 1.75; }

/* Device icons */
.device-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-bottom: 2rem; }
.device-item { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 0.75rem 1rem; border-radius: 0.75rem; border: 1px solid var(--border); transition: all 0.2s; }
.device-item:hover { border-color: var(--primary); background: var(--orange-light); }
.device-item img { width: 32px; height: 32px; }
.device-item span { font-size: 0.75rem; }

/* Reviews */
.review-card { background: var(--bg); border-radius: 1rem; padding: 1.5rem; border: 1px solid var(--border); }
.review-card p { font-size: 0.875rem; color: var(--muted-fg); line-height: 1.75; margin-bottom: 1rem; }
.review-author { display: flex; align-items: center; gap: 0.75rem; }
.review-author img { width: 40px; height: 40px; border-radius: 50%; }
.review-author .name { font-size: 0.875rem; font-weight: 500; }
.stars { display: flex; gap: 2px; }
.stars img { width: 16px; height: 16px; }

/* Blog cards */
.blog-card { border-radius: 1rem; border: 1px solid var(--border); overflow: hidden; transition: box-shadow 0.3s; background: var(--bg); display: block; }
.blog-card:hover { box-shadow: 0 10px 30px -10px rgba(0,0,0,0.1); }
.blog-card img { width: 100%; height: 160px; object-fit: cover; }
.blog-card .info { padding: 1rem; }
.blog-card .info .date { font-size: 0.75rem; color: var(--muted-fg); }
.blog-card .info h3 { font-size: 0.875rem; font-weight: 600; margin-top: 0.5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-card:hover h3 { color: var(--primary); }

/* FAQ */
.faq-item { border: 1px solid var(--border); border-radius: 0.75rem; margin-bottom: 0.75rem; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem; cursor: pointer; font-weight: 500; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chevron { width: 20px; height: 20px; transition: transform 0.3s; color: var(--muted-fg); }
.faq-item[open] summary .chevron { transform: rotate(180deg); }
.faq-item .answer { padding: 0 1.25rem 1.25rem; font-size: 0.875rem; color: var(--muted-fg); line-height: 1.75; white-space: pre-line; }

/* CTA */
.cta-section { text-align: center; padding: 4rem 0; }
.cta-section img { width: 64px; height: 64px; margin: 0 auto 1rem; }
.cta-section .buttons { display: flex; justify-content: center; gap: 1rem; margin-top: 1.5rem; }

/* Download page */
.platform-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 1.5rem 0; margin-bottom: 3rem; }
.platform-tab { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; padding: 0.75rem 1rem; border-radius: 0.75rem; transition: all 0.2s; font-size: 0.875rem; cursor: pointer; }
.platform-tab:hover { background: var(--muted); }
.platform-tab.active { background: var(--primary); color: var(--primary-fg); box-shadow: var(--shadow-orange); }
.platform-tab img { width: 24px; height: 24px; }
.platform-tab span { font-size: 0.75rem; }

.platform-content { display: flex; align-items: center; gap: 3rem; margin-bottom: 3rem; }
.platform-content .info { flex: 1; }
.platform-content .info h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.platform-content .screenshot { flex: 1; display: flex; justify-content: center; }
.platform-content .screenshot img { max-width: 28rem; object-fit: contain; }

.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-bottom: 4rem; }
.step-card { text-align: center; }
.step-num { width: 40px; height: 40px; background: var(--orange-gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary-fg); font-weight: 700; margin: 0 auto 0.75rem; }
.step-card h3 { font-weight: 600; margin-bottom: 0.5rem; }
.step-card p { font-size: 0.875rem; color: var(--muted-fg); }
.step-card img { margin: 0.75rem auto 0; border-radius: 0.75rem; max-width: 200px; }

/* Register page */
.plan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.plan-card { position: relative; text-align: left; padding: 1.25rem; border-radius: 0.75rem; border: 2px solid var(--border); cursor: pointer; transition: all 0.2s; }
.plan-card:hover { border-color: rgba(255,140,0,0.3); }
.plan-card.selected { border-color: var(--primary); background: var(--orange-light); }
.plan-card .tag { position: absolute; top: -12px; left: 12px; font-size: 0.75rem; padding: 2px 8px; border-radius: 4px; font-weight: 500; color: var(--primary-fg); }
.plan-card .tag.best { background: var(--primary); }
.plan-card .tag.popular { background: var(--orange-dark); }
.plan-card .radio { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.plan-card .radio .dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--border); }
.plan-card.selected .radio .dot { border-color: var(--primary); background: var(--primary); }
.plan-card .price { font-size: 1.5rem; font-weight: 700; }
.plan-card .price span { font-size: 0.875rem; font-weight: 400; color: var(--muted-fg); }
.plan-card .total { font-size: 0.875rem; color: var(--muted-fg); text-decoration: line-through; margin-top: 0.25rem; }

.form-section { background: rgba(245,245,244,0.5); border-radius: 0.75rem; padding: 1.5rem; }
.form-section input { width: 100%; padding: 0.5rem 1rem; border-radius: 0.5rem; border: 1px solid var(--border); background: var(--bg); font-size: 0.875rem; margin-bottom: 1rem; outline: none; }
.form-section input:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(255,140,0,0.1); }
.form-section label { display: block; font-size: 0.875rem; margin-bottom: 0.25rem; }

.pay-methods { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.5rem; }
.pay-method { display: flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1rem; border-radius: 0.75rem; border: 2px solid var(--border); font-size: 0.875rem; cursor: pointer; transition: all 0.2s; }
.pay-method:hover { border-color: rgba(255,140,0,0.3); }
.pay-method.selected { border-color: var(--primary); background: var(--orange-light); }
.btn-full { width: 100%; padding: 0.75rem; font-size: 1.125rem; }

/* Affiliate */
.commission-table { width: 100%; border-collapse: collapse; }
.commission-table th, .commission-table td { border: 1px solid var(--border); padding: 0.75rem 1rem; text-align: center; font-size: 0.875rem; }
.commission-table th { background: var(--bg); font-weight: 600; }
.commission-table tr:nth-child(odd) { background: var(--orange-light); }

/* FAQ page */
.faq-hero { background: var(--hero-gradient); padding: 4rem 0; text-align: center; }
.faq-hero h1 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
.faq-search { position: relative; max-width: 32rem; margin: 0 auto; }
.faq-search input { width: 100%; padding: 0.75rem 1rem 0.75rem 3rem; border-radius: 9999px; border: 1px solid var(--border); background: var(--bg); font-size: 0.875rem; outline: none; }
.faq-search svg { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--muted-fg); }
.faq-layout { display: flex; gap: 2.5rem; }
.faq-sidebar { width: 16rem; flex-shrink: 0; }
.faq-sidebar .label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted-fg); margin-bottom: 0.75rem; padding: 0 1rem; }
.faq-cat-btn { display: flex; align-items: center; justify-content: space-between; width: 100%; text-align: left; padding: 0.75rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; transition: all 0.2s; margin-bottom: 0.25rem; }
.faq-cat-btn:hover { background: var(--muted); }
.faq-cat-btn.active { background: var(--orange-light); color: var(--primary); font-weight: 600; border-left: 4px solid var(--primary); }
.faq-main { flex: 1; }
.faq-main h2 { font-size: 1.25rem; font-weight: 700; margin-bottom: 1.5rem; }

/* Contact support */
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; max-width: 48rem; margin: 0 auto; }
.support-card { background: var(--bg); border: 1px solid var(--border); border-radius: 1rem; padding: 1.5rem; text-align: center; }
.support-card .icon { width: 48px; height: 48px; background: var(--orange-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 0.75rem; }
.support-card h3 { font-size: 0.875rem; font-weight: 600; margin-bottom: 0.5rem; }
.support-card p { font-size: 0.75rem; color: var(--muted-fg); }

/* Blog page */
.blog-layout { display: flex; gap: 2.5rem; }
.blog-main { flex: 1; }
.blog-sidebar { width: 20rem; flex-shrink: 0; }
.featured-post { border-radius: 1rem; overflow: hidden; border: 1px solid var(--border); margin-bottom: 2.5rem; display: block; }
.featured-post img { width: 100%; height: 16rem; object-fit: cover; }
.featured-post .info { padding: 1.5rem; }
.featured-post h2 { font-size: 1.25rem; font-weight: 700; margin-top: 0.5rem; }
.featured-post:hover h2 { color: var(--primary); }
.sidebar-search { display: flex; border: 1px solid var(--border); border-radius: 0.75rem; overflow: hidden; margin-bottom: 2rem; }
.sidebar-search input { flex: 1; padding: 0.5rem 1rem; font-size: 0.875rem; border: none; outline: none; }
.sidebar-search button { padding: 0 1rem; background: var(--primary); color: var(--primary-fg); }
.sidebar-cta { background: rgba(245,245,244,0.5); border-radius: 0.75rem; padding: 1.5rem; }
.hot-posts .hot-item { display: flex; gap: 0.75rem; margin-bottom: 1rem; cursor: pointer; }
.hot-posts .hot-item .text h4 { font-size: 0.875rem; font-weight: 500; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hot-posts .hot-item:hover h4 { color: var(--primary); }
.hot-posts .hot-item img { width: 64px; height: 64px; border-radius: 0.5rem; object-fit: cover; flex-shrink: 0; }

.deep-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-bottom: 2.5rem; }
.recent-list .recent-item { display: flex; gap: 1rem; padding: 1rem; border: 1px solid var(--border); border-radius: 0.75rem; margin-bottom: 1rem; cursor: pointer; transition: border-color 0.2s; }
.recent-list .recent-item:hover { border-color: rgba(255,140,0,0.3); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 2.5rem; }
.pagination button { padding: 0.5rem 0.75rem; font-size: 0.875rem; border-radius: 0.5rem; border: 1px solid var(--border); transition: all 0.2s; }
.pagination button:hover { background: var(--orange-light); }
.pagination button.active { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Article */
.article-content { max-width: 48rem; }
.article-content h1 { font-size: 1.875rem; font-weight: 700; margin-bottom: 1rem; }
.article-content h2 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; }
.article-content h3 { font-size: 1.25rem; font-weight: 700; margin: 1.5rem 0 0.75rem; }
.article-content p { color: var(--muted-fg); line-height: 1.75; margin-bottom: 1rem; }
.article-content img { width: 100%; border-radius: 0.75rem; margin-bottom: 2rem; }
.toc { background: var(--orange-light); border: 1px solid rgba(255,140,0,0.2); border-radius: 0.75rem; padding: 1.25rem; margin-bottom: 2rem; }
.toc h3 { color: var(--primary); font-weight: 600; margin-bottom: 0.5rem; }
.toc ol { padding-left: 1.5rem; font-size: 0.875rem; color: var(--primary); }
.toc ol li { margin-bottom: 0.25rem; }
.article-cta { background: rgba(245,245,244,0.5); border-radius: 1rem; padding: 2rem; display: flex; align-items: center; gap: 1.5rem; border: 1px solid var(--border); margin-top: 2rem; }

/* Scrolling withdrawals */
.scroll-container { position: relative; max-height: 18rem; overflow: hidden; }
.scroll-inner { max-height: 18rem; overflow: hidden; }
.scroll-item { display: flex; align-items: center; gap: 0.5rem; background: rgba(255,255,255,0.8); backdrop-filter: blur(4px); border-radius: 0.5rem; padding: 0.5rem 1rem; border: 1px solid var(--border); font-size: 0.875rem; margin-bottom: 0.5rem; }
.scroll-item .avatar { width: 24px; height: 24px; background: var(--orange-gradient); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary-fg); font-size: 0.75rem; }
.scroll-fade-top { position: absolute; top: 0; left: 0; right: 0; height: 4rem; background: linear-gradient(to bottom, rgba(255,247,237,0.8), transparent); pointer-events: none; z-index: 1; }
.scroll-fade-bottom { position: absolute; bottom: 0; left: 0; right: 0; height: 4rem; background: linear-gradient(to top, rgba(255,247,237,0.8), transparent); pointer-events: none; z-index: 1; }

/* Fade in animation */
.fade-section { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-section.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .mobile-toggle { display: block; }
  .hero-flex, .platform-content, .simple-op, .why-use-item, .why-use-item.reverse, .article-cta { flex-direction: column; }
  .grid-3, .deep-grid, .support-grid, .steps-grid { grid-template-columns: 1fr; }
  .grid-4, .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-content h1 { font-size: 1.75rem; }
  .blog-layout, .faq-layout { flex-direction: column; }
  .blog-sidebar, .faq-sidebar { width: 100%; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

/* Chevron SVG inline */
.chevron-icon { display: inline-block; width: 20px; height: 20px; }