/* roulang page: index */
:root {
  --gold: #C9A063;
  --gold-dark: #B4894A;
  --gold-light: #E7D2AF;
  --ink: #1B1B1F;
  --paper: #F7F4EF;
  --red: #C6422E;
  --card-bg: #FFFDF9;
  --car-bg: #F0ECE5;
  --line: #E4DED4;
  --text-light: #9C9386;
  --text-body: #5C554A;
  --text-dark: #2C2A26;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 32px rgba(27,27,31,0.12);
  --container: 1200px;
  --spacer: 96px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); font-size: 1rem; line-height: 1.75; background: var(--paper); color: var(--text-body); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.3s, border-color 0.3s, background 0.3s, box-shadow 0.3s, transform 0.3s; }
a:focus, button:focus, input:focus { outline: 2px solid var(--gold); outline-offset: 2px; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 96px 0; }
@media (max-width: 768px) { .section-pad { padding: 56px 0; } .container { padding: 0 18px; } }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 0.9375rem; line-height: 1.4; transition: all 0.3s cubic-bezier(0.25,0.1,0.25,1);
  border: 2px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--gold); color: #1B1B1F; border-color: var(--gold); }
.btn-primary:hover { background: var(--gold-dark); border-color: var(--gold-dark); box-shadow: 0 8px 24px rgba(201,160,99,0.3); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(1px); box-shadow: none; }
.btn-outline { background: transparent; color: var(--gold); border-color: var(--gold); }
.btn-outline:hover { background: rgba(201,160,99,0.08); border-color: var(--gold-dark); color: var(--gold-dark); }
.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-sm { padding: 8px 18px; font-size: 0.8125rem; }
.btn-download { display: inline-flex; align-items: center; gap: 12px; height: 56px; padding: 0 28px; border-radius: var(--radius-sm); background: var(--gold); color: #1B1B1F; font-weight: 600; font-size: 0.9375rem; transition: all 0.3s ease; }
.btn-download:hover { background: var(--gold-dark); box-shadow: 0 8px 24px rgba(201,160,99,0.35); transform: translateY(-2px); }
.btn-download i { font-size: 1.25rem; }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(27,27,31,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,160,99,0.15); }
.header-top { height: 48px; display: flex; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.06); }
.header-top-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { display: flex; align-items: flex-end; gap: 3px; height: 20px; }
.brand-mark i { display: block; width: 7px; background: var(--gold); border-radius: 1px; }
.brand-mark i:nth-child(1) { height: 10px; }
.brand-mark i:nth-child(2) { height: 15px; }
.brand-mark i:nth-child(3) { height: 20px; }
.brand-text { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 700; color: #F7F4EF; letter-spacing: 1px; }
.header-user { display: flex; align-items: center; gap: 18px; }
.text-link { color: rgba(247,244,239,0.7); font-size: 0.875rem; font-weight: 500; }
.text-link:hover { color: var(--gold); }
.header-nav { height: 56px; display: flex; align-items: center; }
.header-nav-inner { display: flex; align-items: center; gap: 24px; width: 100%; }
.main-nav { display: flex; align-items: center; gap: 28px; flex-shrink: 0; }
.nav-link { position: relative; color: rgba(247,244,239,0.72); font-size: 0.9375rem; font-weight: 500; padding: 17px 0; transition: color 0.3s; }
.nav-link:hover { color: var(--gold); }
.nav-link.active { color: var(--gold); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: var(--gold); }
.nav-right { display: flex; align-items: center; gap: 16px; margin-left: auto; flex: 1; justify-content: flex-end; }
.search-box { display: flex; align-items: center; width: 220px; height: 36px; border-radius: var(--radius-sm); background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); padding: 0 12px; gap: 8px; transition: border-color 0.3s; }
.search-box:focus-within { border-color: var(--gold); }
.search-box input { flex: 1; background: none; border: none; outline: none; color: #F7F4EF; font-size: 0.875rem; font-family: var(--font-sans); }
.search-box input::placeholder { color: rgba(247,244,239,0.4); }
.search-box button { color: var(--gold); font-size: 0.875rem; }
.hot-tags { display: flex; align-items: center; gap: 8px; }
.hot-tag { display: inline-block; padding: 4px 12px; border-radius: 999px; border: 1px solid rgba(201,160,99,0.3); color: rgba(233,214,181,0.8); font-size: 0.75rem; transition: all 0.3s; white-space: nowrap; }
.hot-tag:hover { background: rgba(201,160,99,0.1); border-color: var(--gold); color: var(--gold); }
.menu-toggle { display: none; }

/* Mobile drawer */
.mobile-drawer { display: none; }

/* ===== Hero ===== */
.hero { position: relative; background: var(--paper); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(201,160,99,0.10), transparent 60%); pointer-events: none; }
.hero::after { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(27,27,31,0.05) 1px, transparent 1px); background-size: 24px 24px; pointer-events: none; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; padding: 88px 24px; min-height: 620px; position: relative; z-index: 1; }
.hero-text h1 { font-family: var(--font-serif); font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 700; line-height: 1.15; color: var(--text-dark); margin-bottom: 24px; letter-spacing: 1px; }
.hero-sub { font-size: 1.0625rem; color: var(--text-body); max-width: 520px; margin-bottom: 36px; line-height: 1.75; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.float-tag { position: absolute; background: #fff; color: var(--gold-dark); font-size: 0.8125rem; font-weight: 600; padding: 8px 16px; border-radius: 999px; box-shadow: 0 4px 16px rgba(27,27,31,0.10); white-space: nowrap; }
.float-tag.tag-1 { top: -18px; left: 18px; }
.float-tag.tag-2 { top: 40%; right: -12px; }
.float-tag.tag-3 { bottom: -16px; left: 32%; }

/* ===== Stats ===== */
.stats { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item { padding: 48px 24px; text-align: center; border-left: 1px solid var(--line); }
.stat-item:first-child { border-left: none; }
.stat-number { font-family: var(--font-serif); font-size: 2.6rem; font-weight: 700; color: var(--gold); line-height: 1.2; display: inline-flex; align-items: baseline; gap: 2px; }
.stat-number em { font-style: normal; font-size: 1.1rem; font-weight: 600; margin-left: 2px; }
.stat-item p { margin-top: 10px; font-size: 0.875rem; color: var(--text-light); font-weight: 500; }

/* ===== Section header ===== */
.section-header { display: flex; align-items: flex-end; gap: 20px; margin-bottom: 40px; }
.eyebrow { font-size: 0.75rem; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 8px; }
.section-header h2 { font-family: var(--font-serif); font-size: 1.75rem; font-weight: 700; color: var(--text-dark); position: relative; padding-left: 16px; line-height: 1.3; }
.section-header h2::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; background: var(--gold); border-radius: 2px; }
.view-more { margin-left: auto; font-size: 0.875rem; color: var(--text-light); font-weight: 500; }
.view-more:hover { color: var(--gold-dark); }

/* ===== Features carousel ===== */
.features { padding: 96px 0; background: var(--paper); }
.carousel-wrap { position: relative; overflow: hidden; }
.carousel-viewport { overflow: hidden; margin: 0 -12px; }
.carousel-track { display: flex; gap: 24px; transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1); will-change: transform; }
.carousel-card { flex-shrink: 0; width: calc((100% - 72px) / 4 - 24px); min-width: 260px; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; border: 1px solid var(--line); transition: box-shadow 0.3s, transform 0.3s; }
.carousel-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.carousel-card .cover { height: 180px; overflow: hidden; }
.carousel-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.carousel-card:hover .cover img { transform: scale(1.03); }
.carousel-card .info { padding: 18px 20px; }
.carousel-card .info h3 { font-size: 1.125rem; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.carousel-card .info p { font-size: 0.8125rem; color: var(--text-light); line-height: 1.6; }
.carousel-arrow { position: absolute; top: 45%; z-index: 5; width: 44px; height: 44px; border-radius: 50%; background: #fff; color: var(--gold-dark); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(27,27,31,0.10); transition: all 0.3s; }
.carousel-arrow:hover { background: var(--gold); color: #1B1B1F; }
.carousel-arrow.prev { left: -8px; }
.carousel-arrow.next { right: -8px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 28px; }
.carousel-dots button { width: 8px; height: 8px; border-radius: 50%; background: var(--line); transition: all 0.3s; }
.carousel-dots button.active { background: var(--gold); width: 24px; border-radius: 4px; }

/* ===== Requirements ===== */
.requirements { padding: 96px 0; background: #fff; border-top: 1px solid var(--line); }
.req-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: center; }
.req-left h2 { font-family: var(--font-serif); font-size: 1.75rem; font-weight: 700; color: var(--text-dark); position: relative; padding-left: 16px; margin-bottom: 20px; line-height: 1.3; }
.req-left h2::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; background: var(--gold); border-radius: 2px; }
.req-left p { color: var(--text-body); font-size: 0.9375rem; max-width: 360px; }
.req-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.req-card { background: var(--card-bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; position: relative; overflow: hidden; transition: box-shadow 0.3s, transform 0.3s; }
.req-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--gold); transform: scaleX(0); transition: transform 0.4s ease; }
.req-card:hover { box-shadow: var(--shadow-lg); }
.req-card:hover::before { transform: scaleX(1); }
.req-card .icon { width: 40px; height: 40px; border-radius: 8px; background: rgba(201,160,99,0.1); display: flex; align-items: center; justify-content: center; color: var(--gold); font-size: 1.1rem; margin-bottom: 14px; }
.req-card .name { font-size: 0.8125rem; color: var(--text-light); margin-bottom: 4px; }
.req-card .value { font-size: 1rem; font-weight: 600; color: var(--text-dark); }

/* ===== Testimonials ===== */
.testimonials { padding: 96px 0; background: var(--paper); }
.testimonial-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.testimonial-card { background: var(--card-bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: box-shadow 0.3s, transform 0.3s; }
.testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.testimonial-card.large { grid-column: span 2; }
.testimonial-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.testimonial-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gold); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; font-size: 0.875rem; }
.testimonial-avatar.alt { background: var(--ink); }
.testimonial-name { font-weight: 600; color: var(--text-dark); font-size: 0.9375rem; }
.testimonial-stars { color: var(--gold); font-size: 0.875rem; letter-spacing: 2px; }
.testimonial-text { font-size: 0.9375rem; line-height: 1.7; color: var(--text-body); }
.testimonial-time { margin-top: 14px; font-size: 0.75rem; color: var(--text-light); }

/* ===== CTA Download ===== */
.cta-download { background: var(--ink); padding: 96px 0; position: relative; overflow: hidden; }
.cta-download::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(201,160,99,0.08), transparent 70%); pointer-events: none; }
.cta-download .container { position: relative; z-index: 1; text-align: center; }
.cta-download h2 { font-family: var(--font-serif); font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; color: #F7F4EF; margin-bottom: 16px; }
.cta-download p.sub { color: rgba(247,244,239,0.6); font-size: 0.9375rem; margin-bottom: 40px; }
.download-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.min-ver { margin-top: 28px; font-size: 0.75rem; color: rgba(247,244,239,0.4); }

/* ===== News ===== */
.news-section { padding: 96px 0; background: var(--card-bg); border-top: 1px solid var(--line); }
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-card { display: flex; gap: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; transition: box-shadow 0.3s, transform 0.3s; }
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.news-thumb { flex-shrink: 0; width: 200px; height: 130px; border-radius: 8px; overflow: hidden; background: var(--car-bg); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { flex: 1; display: flex; flex-direction: column; }
.badge { align-self: flex-start; display: inline-block; padding: 3px 12px; border-radius: 999px; background: rgba(201,160,99,0.12); color: var(--gold-dark); font-size: 0.75rem; font-weight: 600; margin-bottom: 8px; }
.news-body h3 { font-size: 1.125rem; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; line-height: 1.4; }
.news-body h3 a:hover { color: var(--gold-dark); }
.news-body .summary { font-size: 0.875rem; color: var(--text-body); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: auto; }
.news-meta { display: flex; align-items: center; gap: 16px; margin-top: 12px; font-size: 0.75rem; color: var(--text-light); }
.news-meta a { color: var(--text-light); }
.news-meta a:hover { color: var(--gold-dark); }
.news-empty { border: 2px dashed var(--line); border-radius: var(--radius); padding: 60px; text-align: center; color: var(--text-light); }

/* ===== FAQ ===== */
.faq { padding: 96px 0; background: var(--paper); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: 10px; background: #fff; margin-bottom: 14px; overflow: hidden; transition: box-shadow 0.3s; }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-q { display: flex; align-items: center; gap: 14px; padding: 20px 24px; cursor: pointer; font-weight: 600; color: var(--text-dark); font-size: 0.9375rem; }
.faq-q .icon { margin-left: auto; color: var(--gold); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 24px 20px; color: var(--text-body); font-size: 0.875rem; line-height: 1.75; border-top: 1px solid var(--line); padding-top: 16px; }

/* ===== Footer ===== */
.site-footer { background: var(--ink); color: rgba(247,244,239,0.7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .brand-text { font-size: 1.4rem; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 0.8125rem; line-height: 1.7; color: rgba(247,244,239,0.5); max-width: 280px; }
.footer-col h4 { font-size: 0.9375rem; color: #F7F4EF; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 0.8125rem; color: rgba(247,244,239,0.55); transition: color 0.3s; }
.footer-col ul a:hover { color: var(--gold); }
.footer-contact li { font-size: 0.8125rem; color: rgba(247,244,239,0.5); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.footer-contact i { color: var(--gold); font-size: 0.8125rem; width: 16px; text-align: center; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 0.75rem; color: rgba(247,244,239,0.35); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 64px 24px; }
  .hero-visual img { height: 320px; }
  .stat-number { font-size: 2rem; }
  .carousel-card { width: calc(50% - 12px); }
  .req-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hot-tags { display: none; }
  .nav-right { gap: 10px; }
  .search-box { width: 160px; }
  .main-nav { gap: 18px; }
}
@media (max-width: 768px) {
  .header-top { height: 56px; }
  .header-nav { display: none; }
  .menu-toggle { display: flex; flex-direction: column; gap: 4px; width: 32px; height: 32px; align-items: center; justify-content: center; position: absolute; right: 18px; top: 14px; z-index: 1100; }
  .menu-toggle span { width: 20px; height: 2px; background: #F7F4EF; border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
  .menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .mobile-drawer { display: none; position: fixed; top: 56px; left: 0; right: 0; background: var(--ink); padding: 24px 18px; z-index: 999; border-bottom: 1px solid rgba(201,160,99,0.2); }
  .mobile-drawer.open { display: block; }
  .mobile-drawer .main-nav { flex-direction: column; align-items: flex-start; gap: 0; }
  .mobile-drawer .nav-link { padding: 14px 0; width: 100%; border-bottom: 1px solid rgba(255,255,255,0.06); font-size: 1rem; }
  .mobile-drawer .nav-link.active { color: var(--gold); }
  .mobile-drawer .search-box { width: 100%; margin: 14px 0; }
  .mobile-drawer .hot-tags { display: flex; flex-wrap: wrap; gap: 8px; }
  .header-user .text-link { font-size: 0.8125rem; }
  .header-user .btn-sm { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 32px 16px; border-left: none; border-bottom: 1px solid var(--line); }
  .stat-item:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat-number { font-size: 1.8rem; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .testimonial-card.large { grid-column: span 1; }
  .req-cards { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .carousel-card { width: calc(100% - 20px); min-width: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 48px 18px; min-height: auto; }
  .hero-text h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); }
  .hero-cta { flex-direction: column; }
  .btn-lg { width: 100%; justify-content: center; }
  .download-buttons { flex-direction: column; align-items: center; }
  .btn-download { width: 100%; justify-content: center; }
}
@media (max-width: 520px) {
  .stat-number { font-size: 1.5rem; }
  .float-tag { font-size: 0.7rem; padding: 6px 10px; }
  .float-tag.tag-2 { right: 4px; top: 30%; }
  .section-header { flex-wrap: wrap; gap: 12px; }
  .view-more { margin-left: 0; }
}

/* ===== Motion ===== */
@keyframes pulse-glow { 0% { text-shadow: 0 0 0 rgba(201,160,99,0); } 50% { text-shadow: 0 0 16px rgba(201,160,99,0.4); } 100% { text-shadow: 0 0 0 rgba(201,160,99,0); } }
.stat-number { animation: pulse-glow 3s ease-in-out infinite; }
.stat-number:nth-child(2) { animation-delay: 0.5s; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root{
  --primary:#C9A063;
  --primary-hover:#B4894A;
  --primary-light:#E7D2AF;
  --accent:#C6422E;
  --base:#1B1B1F;
  --bg:#F7F4EF;
  --card-bg:#F0ECE5;
  --line:#E4DED4;
  --muted:#9C9386;
  --text:#5C554A;
  --text-dark:#2C2A26;
  --white:#FFFFFF;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-badge:999px;
  --shadow-card:0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover:0 12px 32px rgba(27,27,31,0.12);
  --transition:0.3s cubic-bezier(0.25,0.1,0.25,1);
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --container-max:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);font-size:1rem;line-height:1.75;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--gutter)}
::selection{background:var(--primary-light);color:var(--text-dark)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.site-header{position:sticky;top:0;z-index:1000;background:rgba(27,27,31,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,0.08)}
.header-top{border-bottom:1px solid rgba(255,255,255,0.06)}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;height:48px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:flex;align-items:flex-end;gap:3px;height:20px}
.brand-mark i{display:block;width:8px;border-radius:2px;background:var(--primary)}
.brand-mark i:nth-child(1){height:8px}
.brand-mark i:nth-child(2){height:13px}
.brand-mark i:nth-child(3){height:18px}
.brand-text{font-family:var(--font-title);font-weight:700;font-size:1.25rem;letter-spacing:0.02em;color:var(--white)}
.header-actions{display:flex;align-items:center;gap:16px}
.header-actions .link-login,.header-actions .link-register{color:rgba(255,255,255,0.75);font-size:0.875rem;transition:color var(--transition)}
.header-actions .link-login:hover,.header-actions .link-register:hover{color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--radius-btn);transition:var(--transition);font-size:0.9375rem;line-height:1}
.btn-sm{height:34px;padding:0 16px}
.btn-primary{background:var(--primary);color:var(--base)}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 8px 24px rgba(201,160,99,0.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:rgba(201,160,99,0.08)}
.btn-lg{height:56px;padding:0 28px;font-size:1rem}
.btn-lg i{font-size:1.1rem}

.header-bottom-inner{display:flex;align-items:center;justify-content:space-between;height:56px;gap:20px}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.nav-link{display:inline-flex;align-items:center;height:56px;padding:0 16px;font-size:0.9375rem;font-weight:500;color:rgba(255,255,255,0.7);position:relative;white-space:nowrap;transition:color var(--transition)}
.nav-link:hover{color:var(--white)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{content:'';position:absolute;bottom:0;left:12px;right:12px;height:2px;background:var(--primary);border-radius:2px 2px 0 0}
.header-search{display:flex;align-items:center;gap:8px;flex-shrink:0}
.header-search input{width:220px;height:36px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,0.15);background:rgba(255,255,255,0.06);color:var(--white);padding:0 12px;font-size:0.875rem;outline:none;transition:border-color var(--transition)}
.header-search input::placeholder{color:rgba(255,255,255,0.4)}
.header-search input:focus{border-color:var(--primary)}
.header-search button{width:36px;height:36px;border-radius:var(--radius-btn);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.6);transition:color var(--transition)}
.header-search button:hover{color:var(--primary)}

.hamburger{display:none;width:38px;height:38px;border-radius:var(--radius-btn);align-items:center;justify-content:center;color:var(--white);font-size:1.2rem}
.mobile-drawer{display:none}

.hero{position:relative;background:linear-gradient(180deg,rgba(201,160,99,0.12),transparent),radial-gradient(rgba(201,160,99,0.08) 1px,transparent 1px),var(--bg);background-size:auto,20px 20px,auto;padding:96px 0}
.hero-inner{display:grid;grid-template-columns:1.1fr 0.9fr;gap:60px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:0.8125rem;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--primary);margin-bottom:16px}
.hero-eyebrow::before{content:'';width:28px;height:2px;background:var(--primary)}
.hero h1{font-family:var(--font-title);font-size:clamp(2.4rem,5vw,3.4rem);font-weight:700;line-height:1.15;color:var(--text-dark);margin-bottom:20px;letter-spacing:0.01em}
.hero-sub{font-size:1.0625rem;color:var(--text);max-width:480px;margin-bottom:32px;line-height:1.7}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-hover)}
.hero-visual img{width:100%;height:420px;object-fit:cover;transition:transform 0.5s ease}
.hero-visual:hover img{transform:scale(1.03)}
.hero-badges{position:absolute;left:16px;right:16px;bottom:16px;display:flex;gap:10px;flex-wrap:wrap}
.hero-badge{background:rgba(255,255,255,0.92);backdrop-filter:blur(6px);padding:8px 14px;border-radius:var(--radius-badge);font-size:0.8125rem;font-weight:600;color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,0.08)}

.stats-section{padding:64px 0;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{text-align:center;padding:20px 16px;position:relative}
.stat-item:not(:last-child)::after{content:'';position:absolute;top:25%;right:0;width:1px;height:50%;background:var(--line)}
.stat-number{font-family:var(--font-title);font-size:clamp(2rem,4vw,2.8rem);font-weight:700;color:var(--primary);line-height:1.2;display:inline-block;animation:none}
.stat-number::after{content:'+';font-size:0.6em;margin-left:2px;color:var(--primary)}
.stat-number.pure::after{content:''}
.stat-label{font-size:0.875rem;color:var(--muted);margin-top:6px}

.features-section{padding:96px 0}
.section-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:48px}
.section-head::before{content:'';width:4px;height:28px;background:var(--primary);border-radius:4px;flex-shrink:0;margin-top:6px}
.section-head h2{font-family:var(--font-title);font-size:1.75rem;font-weight:700;color:var(--text-dark);line-height:1.3}
.section-head p{font-size:0.9375rem;color:var(--muted);max-width:560px;margin-top:6px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 28px;position:relative;box-shadow:var(--shadow-card);transition:transform var(--transition),box-shadow var(--transition)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform 0.4s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:20px}
.feature-card h3{font-family:var(--font-title);font-size:1.125rem;font-weight:600;color:var(--text-dark);margin-bottom:10px}
.feature-card p{font-size:0.9375rem;color:var(--text);line-height:1.7}

.scenarios-section{padding:96px 0;background:var(--card-bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scenarios-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scenario-card{background:var(--white);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--transition),box-shadow var(--transition)}
.scenario-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scenario-card img{width:100%;height:240px;object-fit:cover;transition:transform 0.5s ease}
.scenario-card:hover img{transform:scale(1.03)}
.scenario-body{padding:28px}
.scenario-body h3{font-family:var(--font-title);font-size:1.375rem;font-weight:600;color:var(--text-dark);margin-bottom:10px}
.scenario-body p{font-size:0.9375rem;color:var(--text);line-height:1.7}

.process-section{padding:96px 0}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-step{text-align:center;padding:28px 16px;position:relative}
.process-step:not(:last-child)::after{content:'';position:absolute;top:50%;right:-12px;width:24px;height:1px;background:var(--primary);opacity:0.4}
.step-num{font-family:var(--font-title);font-size:1.5rem;font-weight:700;color:var(--primary);display:block;margin-bottom:12px}
.process-step h4{font-size:1rem;font-weight:600;color:var(--text-dark);margin-bottom:8px}
.process-step p{font-size:0.875rem;color:var(--muted);line-height:1.6}

.faq-section{padding:96px 0;background:var(--base);border-top:1px solid rgba(255,255,255,0.06)}
.faq-section .section-head h2{color:var(--white)}
.faq-section .section-head p{color:rgba(255,255,255,0.5)}
.faq-list{max-width:800px}
.faq-item{border-bottom:1px solid rgba(255,255,255,0.1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:22px 4px;font-size:1rem;font-weight:600;color:var(--white);cursor:pointer;transition:color var(--transition)}
.faq-question:hover{color:var(--primary)}
.faq-question i{font-size:0.875rem;color:var(--primary);transition:transform 0.3s ease}
.faq-item.open .faq-question i{transform:rotate(180deg)}
.faq-item.open .faq-question{color:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease}
.faq-answer-inner{padding:0 4px 22px;font-size:0.9375rem;color:rgba(255,255,255,0.65);line-height:1.7}

.cta-section{position:relative;background:linear-gradient(180deg,rgba(201,160,99,0.1),transparent),var(--base);padding:96px 0;text-align:center;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:0;left:0;right:0;height:100%;background:radial-gradient(rgba(201,160,99,0.06) 1px,transparent 1px);background-size:20px 20px;pointer-events:none}
.cta-inner{position:relative;z-index:1;max-width:720px;margin:0 auto}
.cta-inner h2{font-family:var(--font-title);font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:700;color:var(--white);line-height:1.3;margin-bottom:16px}
.cta-inner p{font-size:1rem;color:rgba(255,255,255,0.6);margin-bottom:36px}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-buttons .btn-download{display:inline-flex;align-items:center;gap:10px;height:56px;padding:0 28px;border-radius:var(--radius-btn);background:var(--primary);color:var(--base);font-weight:600;font-size:1rem;transition:var(--transition)}
.cta-buttons .btn-download:hover{background:var(--primary-hover);box-shadow:0 8px 24px rgba(201,160,99,0.35);transform:translateY(-2px)}
.cta-platforms{margin-top:40px}
.cta-platforms .platform-label{font-size:0.8125rem;color:rgba(255,255,255,0.4);margin-bottom:12px}
.cta-platforms .platform-icons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-platforms .platform-icon{display:inline-flex;align-items:center;gap:8px;font-size:0.8125rem;color:rgba(255,255,255,0.6);padding:8px 14px;border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-btn);transition:border-color var(--transition),color var(--transition)}
.cta-platforms .platform-icon:hover{border-color:var(--primary);color:var(--primary)}

.site-footer{background:var(--base);padding:64px 0 0;border-top:1px solid rgba(255,255,255,0.06)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-text{font-size:1.25rem}
.footer-brand p{font-size:0.875rem;color:rgba(255,255,255,0.5);margin-top:14px;line-height:1.7;max-width:320px}
.footer-col h4{font-size:0.9375rem;font-weight:600;color:var(--white);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.875rem;color:rgba(255,255,255,0.5);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-contact li{font-size:0.875rem;color:rgba(255,255,255,0.5);display:flex;align-items:center;gap:8px}
.footer-contact i{color:var(--primary);font-size:0.8125rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0;text-align:center}
.footer-bottom p{font-size:0.8125rem;color:rgba(255,255,255,0.35)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual img{height:320px}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .process-step:nth-child(2)::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .header-search{display:none}
}

@media(max-width:768px){
  .header-top-inner{height:56px}
  .header-actions .link-login,.header-actions .link-register{font-size:0.8125rem}
  .header-actions .btn-sm{display:none}
  .header-bottom{display:none}
  .hamburger{display:flex}
  .mobile-drawer{display:block}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:0}
  .stat-item:nth-child(2)::after{display:none}
  .stat-item{padding:16px}
  .features-grid{grid-template-columns:1fr}
  .scenarios-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .process-step::after{display:none!important}
  .hero{padding:64px 0}
  .hero h1{font-size:2rem}
  .hero-sub{font-size:0.9375rem}
  .features-section,.scenarios-section,.process-section,.faq-section,.cta-section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-drawer.active{position:fixed;top:56px;left:0;right:0;bottom:0;background:var(--base);z-index:999;padding:24px 20px;overflow-y:auto;display:block}
  .mobile-drawer .drawer-nav{display:flex;flex-direction:column;gap:4px}
  .mobile-drawer .drawer-nav a{padding:14px 0;font-size:1rem;color:rgba(255,255,255,0.8);border-bottom:1px solid rgba(255,255,255,0.06)}
  .mobile-drawer .drawer-nav a.active{color:var(--primary)}
  .mobile-drawer .drawer-search{margin-top:20px}
  .mobile-drawer .drawer-search input{width:100%;height:40px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,0.15);background:rgba(255,255,255,0.06);color:var(--white);padding:0 14px;font-size:0.875rem;outline:none}
  .mobile-drawer .drawer-search input:focus{border-color:var(--primary)}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-number{font-size:1.8rem}
  .hero-ctas{flex-direction:column}
  .hero-ctas .btn{width:100%}
  .cta-buttons{flex-direction:column}
  .cta-buttons .btn-download{width:100%}
}

/* roulang page: article */
:root{
  --gold:#C9A063;
  --gold-hover:#B4894A;
  --gold-light:#E7D2AF;
  --gold-soft:rgba(201,160,99,.08);
  --ink:#1B1B1F;
  --ink-light:#242429;
  --bg:#F7F4EF;
  --card-bg:#FFFFFF;
  --card-soft:#F0ECE5;
  --border:#E4DED4;
  --text-muted:#9C9386;
  --text-body:#5C554A;
  --text-dark:#2C2A26;
  --red:#C6422E;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 1px 2px rgba(0,0,0,.04);
  --shadow-hover:0 12px 32px rgba(27,27,31,.12);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --transition:.3s cubic-bezier(.25,.1,.25,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text-body);line-height:1.75;font-size:1rem}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:100%;outline:none;border:none;background:none}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:.9375rem;line-height:1.4;cursor:pointer;transition:all var(--transition);border:2px solid transparent;white-space:nowrap}
.btn-primary{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-primary:hover{background:var(--gold-hover);border-color:var(--gold-hover);box-shadow:0 8px 24px rgba(201,160,99,.3);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:transparent;color:var(--gold);border-color:var(--gold)}
.btn-outline:hover{background:var(--gold-soft);border-color:var(--gold)}
.btn-outline:active{transform:translateY(1px)}
.btn-sm{padding:8px 18px;font-size:.8438rem}
.btn-lg{height:56px;padding:0 32px;font-size:1rem}
.btn-download{background:var(--gold);color:var(--ink);border-color:var(--gold);height:56px;padding:0 28px;border-radius:var(--radius-sm);font-weight:600;font-size:.9375rem;transition:all var(--transition);gap:12px}
.btn-download i{font-size:1.25rem}
.btn-download:hover{background:var(--gold-hover);border-color:var(--gold-hover);box-shadow:0 8px 24px rgba(201,160,99,.3);transform:translateY(-2px)}
.btn-download:active{transform:translateY(0)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:var(--ink);color:#fff;box-shadow:0 2px 16px rgba(0,0,0,.08)}
.header-top{background:var(--ink);border-bottom:1px solid rgba(255,255,255,.06)}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;min-height:48px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:700;font-size:1.375rem;color:#fff;letter-spacing:.5px}
.brand-mark{display:inline-flex;align-items:flex-end;gap:3px;height:22px}
.brand-mark i{width:7px;border-radius:2px;background:var(--gold);display:block}
.brand-mark i:nth-child(1){height:10px}
.brand-mark i:nth-child(2){height:16px}
.brand-mark i:nth-child(3){height:22px}
.brand-text{color:#fff}
.header-top-actions{display:flex;align-items:center;gap:16px}
.header-top-actions a{font-size:.875rem;color:rgba(255,255,255,.8);transition:color .2s}
.header-top-actions a:hover{color:var(--gold)}
.header-top-actions .btn{color:var(--ink)}
.header-top-actions .btn:hover{color:var(--ink)}
.header-bottom{background:var(--ink);border-bottom:1px solid rgba(255,255,255,.06)}
.header-bottom-inner{display:flex;align-items:center;gap:24px;min-height:56px}
.main-nav{display:flex;align-items:center;gap:6px;flex:1}
.main-nav .nav-link{position:relative;display:inline-block;padding:16px 14px;font-size:.9375rem;font-weight:500;color:rgba(255,255,255,.75);transition:color .25s}
.main-nav .nav-link:hover{color:#fff}
.main-nav .nav-link.active{color:#fff}
.main-nav .nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--gold);border-radius:2px}
.header-search{display:flex;align-items:center;background:rgba(255,255,255,.08);border-radius:var(--radius-sm);padding:0 8px;width:220px;transition:border-color .25s,background .25s;border:1px solid transparent}
.header-search:focus-within{background:rgba(255,255,255,.12);border-color:var(--gold)}
.header-search .search-input{flex:1;background:transparent;color:#fff;font-size:.875rem;padding:8px 6px;min-width:0}
.header-search .search-input::placeholder{color:rgba(255,255,255,.35)}
.header-search .search-btn{color:rgba(255,255,255,.55);cursor:pointer;padding:4px 6px;transition:color .25s}
.header-search .search-btn:hover{color:var(--gold)}
.header-hot{display:flex;align-items:center;gap:6px;flex-shrink:0}
.hot-label{font-size:.75rem;color:rgba(255,255,255,.4);letter-spacing:.5px}
.hot-tag{font-size:.75rem;display:inline-block;padding:4px 12px;border-radius:999px;background:rgba(201,160,99,.12);color:var(--gold-light);transition:all .25s;cursor:pointer}
.hot-tag:hover{background:rgba(201,160,99,.25);color:#fff}
.nav-toggle{display:none;background:transparent;color:#fff;font-size:1.25rem;cursor:pointer;padding:6px;border-radius:var(--radius-sm);transition:background .2s}
.nav-toggle:hover{background:rgba(255,255,255,.12)}

/* Mobile drawer */
.mobile-drawer{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(27,27,31,.98);z-index:999;padding:90px 32px 40px;display:none;flex-direction:column;overflow-y:auto;transform:translateX(100%);transition:transform .35s cubic-bezier(.25,.1,.25,1)}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer .drawer-close{position:absolute;top:16px;right:24px;background:transparent;color:#fff;font-size:1.5rem;cursor:pointer;padding:8px;border-radius:50%;transition:background .2s}
.mobile-drawer .drawer-close:hover{background:rgba(255,255,255,.1)}
.mobile-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.mobile-nav a{font-family:var(--font-serif);font-size:1.375rem;color:rgba(255,255,255,.8);padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);transition:color .25s}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--gold)}
.mobile-drawer .drawer-search{display:flex;background:rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:6px 12px;margin-bottom:20px;border:1px solid transparent}
.mobile-drawer .drawer-search input{flex:1;background:transparent;color:#fff;font-size:.9375rem;padding:8px 0;min-width:0}
.mobile-drawer .drawer-search input::placeholder{color:rgba(255,255,255,.4)}
.mobile-drawer .drawer-hot{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.mobile-drawer .drawer-hot a{font-size:.8125rem;padding:6px 14px;border-radius:999px;background:rgba(201,160,99,.12);color:var(--gold-light)}
.mobile-drawer .drawer-actions{display:flex;gap:12px;margin-top:auto}
.mobile-drawer .drawer-actions a{flex:1;justify-content:center}
.mobile-drawer .drawer-actions a:first-child{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff}
.drawer-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(2px);z-index:998;opacity:0;visibility:hidden;transition:opacity .3s}
.drawer-backdrop.show{opacity:1;visibility:visible}

/* Article page */
.article-page{padding:48px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:32px;align-items:start}
.article-main{background:var(--card-bg);border-radius:var(--radius);padding:44px 48px;box-shadow:var(--shadow);border:1px solid var(--border)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:.8125rem;color:var(--text-muted);margin-bottom:28px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb .sep{color:rgba(156,147,134,.5)}
.breadcrumb .current{color:var(--text-muted);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-family:var(--font-serif);font-size:clamp(1.75rem,3vw,2.4rem);font-weight:700;line-height:1.3;color:var(--text-dark);margin-bottom:20px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;padding-bottom:28px;border-bottom:1px solid var(--border);margin-bottom:32px}
.meta-badge{display:inline-block;padding:4px 14px;border-radius:999px;background:var(--gold-soft);color:var(--gold-hover);font-size:.75rem;font-weight:600}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem;color:var(--text-muted)}
.meta-item i{font-size:.875rem}
.article-share{display:inline-flex;align-items:center;gap:6px;margin-left:auto}
.article-share span{font-size:.8125rem;color:var(--text-muted)}
.share-link{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--card-soft);color:var(--text-body);font-size:.875rem;transition:all .25s}
.share-link:hover{background:var(--gold);color:var(--ink);transform:translateY(-2px)}

/* Article body */
.article-body{font-size:1.0625rem;line-height:1.9;color:var(--text-body)}
.article-body>*+*{margin-top:1.25em}
.article-body p{line-height:1.9}
.article-body h2,.article-body h3,.article-body h4{font-family:var(--font-serif);color:var(--text-dark);line-height:1.4;font-weight:700;position:relative}
.article-body h2{font-size:1.625rem;padding-left:14px;margin-top:2em}
.article-body h2::before{content:"";position:absolute;left:0;top:.25em;width:4px;height:1em;background:var(--gold);border-radius:2px}
.article-body h3{font-size:1.3125rem;margin-top:1.6em}
.article-body h4{font-size:1.125rem;margin-top:1.4em}
.article-body a{color:var(--gold-hover);text-decoration:underline;text-underline-offset:4px;transition:color .2s}
.article-body a:hover{color:var(--gold)}
.article-body ul{list-style:disc;padding-left:1.5em}
.article-body ol{list-style:decimal;padding-left:1.5em}
.article-body li{margin-top:.5em;line-height:1.8}
.article-body img{border-radius:var(--radius);margin:1.5em 0}
.article-body blockquote{border-left:3px solid var(--gold);background:var(--card-soft);padding:1.25em 1.5em;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-body);font-style:italic;margin-top:1.5em}
.article-body blockquote p{margin:0}
.article-body table{width:100%;border-collapse:collapse;font-size:.9375rem;margin-top:1.5em}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-body th{background:var(--card-soft);font-weight:600;color:var(--text-dark)}
.article-body tr:nth-child(even){background:rgba(240,236,229,.3)}
.article-body pre{background:var(--ink);color:#e8e6e3;border-radius:var(--radius-sm);padding:1.25em;overflow-x:auto;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:.875rem;line-height:1.7;margin-top:1.5em}
.article-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;background:var(--card-soft);padding:2px 6px;border-radius:4px;font-size:.875em}
.article-body pre code{background:transparent;padding:0;color:inherit}

/* Not found */
.not-found{text-align:center;padding:60px 20px;border:2px dashed var(--border);border-radius:var(--radius);background:var(--bg)}
.not-found h2{font-family:var(--font-serif);font-size:1.75rem;color:var(--text-dark);margin-bottom:12px}
.not-found p{color:var(--text-muted);margin-bottom:24px}

/* Pager */
.article-pager{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:28px;border-top:1px solid var(--border)}
.pager-link{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;color:var(--text-body);transition:all .25s;max-width:48%}
.pager-link:hover{border-color:var(--gold);color:var(--gold-hover);background:var(--gold-soft)}
.pager-link.next{margin-left:auto}
.pager-link i{font-size:.875rem}

/* Sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:130px}
.sidebar-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.sidebar-card h3{font-family:var(--font-serif);font-size:1.125rem;color:var(--text-dark);font-weight:700;margin-bottom:20px;padding-left:12px;position:relative}
.sidebar-card h3::before{content:"";position:absolute;left:0;top:.2em;width:3px;height:1em;background:var(--gold);border-radius:2px}
.related-list{display:flex;flex-direction:column;gap:16px}
.related-item{display:flex;gap:12px;align-items:center;transition:all .25s}
.related-item:hover .related-title{color:var(--gold-hover)}
.related-thumb{width:84px;height:63px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0;background:var(--card-soft)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.related-item:hover .related-thumb img{transform:scale(1.06)}
.related-info{display:flex;flex-direction:column;gap:4px;min-width:0}
.related-title{font-size:.875rem;font-weight:600;color:var(--text-dark);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s}
.related-date{font-size:.75rem;color:var(--text-muted)}
.sidebar-promo{position:relative;overflow:hidden;padding:0;background:var(--ink)}
.sidebar-promo img{width:100%;height:180px;object-fit:cover;opacity:.55}
.sidebar-promo .promo-content{position:relative;padding:20px 20px 24px;margin-top:-20px;background:linear-gradient(180deg,transparent,var(--ink))}
.sidebar-promo .promo-content h4{font-family:var(--font-serif);color:#fff;font-size:1.125rem;margin-bottom:4px}
.sidebar-promo .promo-content p{color:rgba(255,255,255,.65);font-size:.8125rem;margin-bottom:14px}
.back-top{width:100%;padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card-bg);color:var(--text-body);font-size:.875rem;font-weight:500;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.back-top:hover{border-color:var(--gold);color:var(--gold-hover);background:var(--gold-soft)}

/* FAQ */
.faq-section{padding:96px 0;background:var(--bg);border-top:1px solid var(--border)}
.section-head{max-width:600px;margin-bottom:48px}
.section-eyebrow{display:inline-block;font-size:.8125rem;font-weight:600;color:var(--gold-hover);letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.section-title{font-family:var(--font-serif);font-size:2rem;font-weight:700;color:var(--text-dark);line-height:1.25;position:relative;padding-left:14px}
.section-title::before{content:"";position:absolute;left:0;top:.15em;width:4px;height:1em;background:var(--gold);border-radius:2px}
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow .3s}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:1rem;font-weight:600;color:var(--text-dark);cursor:pointer;transition:background .25s;text-align:left}
.faq-question:hover{background:rgba(240,236,229,.4)}
.faq-question i{font-size:.875rem;color:var(--gold);transition:transform .3s;flex-shrink:0}
.faq-item.open .faq-question i{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-answer{max-height:300px}
.faq-answer-inner{padding:0 24px 20px;color:var(--text-body);font-size:.9375rem}
.faq-answer-inner p{margin:0;line-height:1.75}

/* CTA */
.cta-section{background:var(--ink);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(201,160,99,.12),transparent 45%),radial-gradient(circle at 85% 20%,rgba(201,160,99,.08),transparent 35%)}
.cta-section::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:24px 24px}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:800px;margin:0 auto}
.cta-section h2{font-family:var(--font-serif);font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:700;line-height:1.3;margin-bottom:16px}
.cta-section .cta-sub{color:rgba(255,255,255,.6);font-size:1.0625rem;margin-bottom:36px}
.cta-buttons{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-bottom:24px}
.cta-hint{font-size:.8125rem;color:rgba(255,255,255,.35)}

/* Footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:64px 0 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.875rem;line-height:1.8;color:rgba(255,255,255,.55);max-width:340px}
.footer-col h4{font-size:.9375rem;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:.875rem;color:rgba(255,255,255,.55);transition:color .2s}
.footer-col a:hover{color:var(--gold)}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:.875rem;color:rgba(255,255,255,.55)}
.footer-contact i{width:16px;color:var(--gold);text-align:center}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:20px 0;text-align:center;font-size:.8125rem;color:rgba(255,255,255,.35)}

/* Responsive */
@media (max-width:1024px){
  .header-bottom-inner{flex-wrap:wrap;padding:8px 0;gap:12px}
  .header-search{width:100%;order:3}
  .header-hot{display:none}
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar-card{width:calc(50% - 12px)}
  .sidebar-promo{width:100%}
  .back-top{width:100%}
}
@media (max-width:768px){
  .header-top-actions{display:none}
  .header-bottom{display:block}
  .header-bottom-inner{flex-wrap:wrap;padding:0}
  .main-nav{overflow-x:auto;gap:0;white-space:nowrap;display:none}
  .header-search{display:none}
  .header-hot{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px}
  .header-top-inner{justify-content:space-between}
  .mobile-drawer{display:flex}
  .article-page{padding:24px 0 64px}
  .article-main{padding:28px 20px}
  .article-title{font-size:1.75rem}
  .article-meta{gap:10px}
  .article-share{margin-left:0;width:100%;justify-content:flex-start;padding-top:6px}
  .article-pager{flex-direction:column}
  .pager-link{max-width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-section{padding:56px 0}
  .cta-section{padding:60px 0}
  .cta-buttons{flex-direction:column}
  .btn-download{width:100%}
  .article-sidebar{flex-direction:column}
  .sidebar-card{width:100%}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .footer-grid{grid-template-columns:1fr}
  .article-main{padding:24px 16px}
  .article-meta .meta-item{font-size:.75rem}
  .related-item .related-thumb{width:72px;height:54px}
  .btn{padding:10px 20px}
  .btn-download{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root {
      --primary: #C9A063;
      --primary-dark: #B4894A;
      --primary-light: #E7D2AF;
      --dark: #1B1B1F;
      --bg-body: #F7F4EF;
      --accent: #C6422E;
      --neutral-light: #F0ECE5;
      --neutral-border: #E4DED4;
      --neutral-text-light: #9C9386;
      --neutral-text-body: #5C554A;
      --neutral-text-dark: #2C2A26;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 999px;
      --shadow-card: 0 1px 2px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(27,27,31,0.12);
      --font-serif: "Noto Serif SC","Source Han Serif SC","Songti SC",serif;
      --font-sans: "Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      --container-w: 1200px;
      --space-section: 96px;
      --space-section-mobile: 56px;
    }
    * { margin:0; padding:0; box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body { font-family:var(--font-sans); background:var(--bg-body); color:var(--neutral-text-body); line-height:1.75; font-size:1rem; -webkit-font-smoothing:antialiased; }
    img { max-width:100%; display:block; }
    a { color:inherit; text-decoration:none; }
    ul,ol { list-style:none; }
    button,input,select,textarea { font-family:inherit; font-size:inherit; }
    .container { max-width:var(--container-w); margin:0 auto; padding:0 24px; }
    .badge { display:inline-flex; align-items:center; gap:6px; padding:4px 14px; background:rgba(201,160,99,0.12); color:var(--primary-dark); border-radius:var(--radius-pill); font-size:0.8125rem; font-weight:600; line-height:1.4; }
    .badge-accent { background:rgba(198,66,46,0.1); color:var(--accent); }
    .btn { display:inline-flex; align-items:center; justify-content:center; gap:10px; padding:12px 28px; border-radius:var(--radius-btn); font-weight:600; font-size:0.9375rem; line-height:1.4; border:2px solid transparent; cursor:pointer; transition:all 0.3s cubic-bezier(0.25,0.1,0.25,1); }
    .btn-primary { background:var(--primary); color:var(--dark); }
    .btn-primary:hover { background:var(--primary-dark); box-shadow:0 8px 24px rgba(201,160,99,0.3); transform:translateY(-1px); }
    .btn-primary:active { transform:translateY(1px); }
    .btn-outline { background:transparent; border-color:var(--primary); color:var(--primary); }
    .btn-outline:hover { background:rgba(201,160,99,0.08); }
    .btn-dark { background:var(--dark); color:#fff; }
    .btn-dark:hover { background:#2c2c33; }
    .btn-sm { padding:8px 20px; font-size:0.875rem; }
    .btn-lg { padding:16px 36px; font-size:1rem; }
    .btn-download { height:56px; padding:0 28px; justify-content:flex-start; }
    .btn-download i { width:24px; text-align:center; font-size:1.25rem; }
    .section { padding:var(--space-section) 0; }
    .section-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:48px; gap:24px; }
    .section-eyebrow { font-size:0.8125rem; font-weight:600; letter-spacing:0.08em; color:var(--primary); text-transform:uppercase; margin-bottom:8px; display:block; }
    .section-title { font-family:var(--font-serif); font-size:1.75rem; font-weight:700; color:var(--neutral-text-dark); line-height:1.3; padding-left:16px; border-left:4px solid var(--primary); }
    .section-sub { color:var(--neutral-text-light); font-size:0.9375rem; max-width:700px; margin-top:8px; }
    .select-link { color:var(--primary-dark); font-weight:600; font-size:0.9375rem; display:inline-flex; align-items:center; gap:6px; transition:color 0.2s; }
    .select-link:hover { color:var(--primary); }
    .select-link i { font-size:0.75rem; }

    /* ========== HEADER ========== */
    .site-header { position:sticky; top:0; z-index:1000; background:var(--dark); color:#fff; transition:background 0.3s; box-shadow:0 1px 0 rgba(255,255,255,0.06); }
    .header-top { border-bottom:1px solid rgba(255,255,255,0.08); background:rgba(27,27,31,0.98); }
    .header-top-inner { display:flex; align-items:center; justify-content:space-between; height:48px; }
    .brand { display:flex; align-items:center; gap:10px; }
    .brand-mark { display:flex; align-items:flex-end; gap:3px; height:22px; }
    .brand-mark i { width:6px; border-radius:2px; background:var(--primary); display:block; }
    .brand-mark i:nth-child(1) { height:10px; }
    .brand-mark i:nth-child(2) { height:16px; }
    .brand-mark i:nth-child(3) { height:22px; }
    .brand-text { font-family:var(--font-serif); font-size:1.25rem; font-weight:700; letter-spacing:0.02em; color:#fff; }
    .header-actions { display:flex; align-items:center; gap:20px; }
    .header-link { font-size:0.875rem; color:rgba(255,255,255,0.75); transition:color 0.2s; }
    .header-link:hover { color:var(--primary); }
    .header-bottom { background:rgba(27,27,31,0.92); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); }
    .header-bottom-inner { display:flex; align-items:center; justify-content:space-between; height:56px; gap:24px; }
    .main-nav { display:flex; align-items:center; gap:4px; }
    .nav-link { display:inline-block; padding:8px 16px; font-size:0.9375rem; font-weight:500; color:rgba(255,255,255,0.7); border-radius:var(--radius-btn); transition:color 0.2s, background 0.2s; position:relative; }
    .nav-link:hover { color:#fff; background:rgba(255,255,255,0.06); }
    .nav-link.active { color:var(--primary); font-weight:600; }
    .nav-link.active::after { content:''; position:absolute; left:16px; right:16px; bottom:2px; height:2px; background:var(--primary); border-radius:2px; }
    .header-search { display:flex; align-items:center; gap:12px; }
    .search-box { display:flex; align-items:center; gap:8px; background:rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.1); border-radius:var(--radius-btn); padding:6px 14px; width:220px; transition:border-color 0.2s; }
    .search-box:focus-within { border-color:var(--primary); }
    .search-box i { color:var(--neutral-text-light); font-size:0.8125rem; }
    .search-box input { background:transparent; border:none; outline:none; color:#fff; font-size:0.875rem; width:100%; }
    .search-box input::placeholder { color:rgba(255,255,255,0.4); }
    .hot-tags { display:flex; align-items:center; gap:6px; }
    .hot-tag { font-size:0.75rem; color:rgba(255,255,255,0.55); padding:2px 10px; border:1px solid rgba(255,255,255,0.15); border-radius:var(--radius-pill); transition:border-color 0.2s,color 0.2s; cursor:pointer; white-space:nowrap; }
    .hot-tag:hover { border-color:var(--primary); color:var(--primary); }
    .nav-toggle { display:none; background:none; border:none; color:#fff; font-size:1.25rem; cursor:pointer; padding:8px; }
    .mobile-search-toggle { display:none; background:none; border:none; color:#fff; font-size:1.125rem; cursor:pointer; padding:8px; }

    /* ========== HERO ========== */
    .hero { background:var(--bg-body); background-image:linear-gradient(180deg, rgba(201,160,99,0.1), transparent), radial-gradient(rgba(201,160,99,0.08) 1px, transparent 1px); background-size:100% 100%, 24px 24px; padding:96px 0 72px; overflow:hidden; }
    .hero-inner { display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
    .hero-eyebrow { display:inline-flex; align-items:center; gap:8px; font-size:0.8125rem; font-weight:600; letter-spacing:0.08em; color:var(--primary-dark); text-transform:uppercase; margin-bottom:16px; }
    .hero-eyebrow::before { content:''; width:32px; height:1px; background:var(--primary); }
    .hero h1 { font-family:var(--font-serif); font-size:clamp(2.4rem,5vw,3.8rem); font-weight:700; line-height:1.15; color:var(--neutral-text-dark); margin-bottom:20px; }
    .hero h1 .highlight { color:var(--primary); }
    .hero-desc { font-size:1.0625rem; color:var(--neutral-text-body); max-width:520px; margin-bottom:32px; line-height:1.8; }
    .hero-actions { display:flex; gap:16px; flex-wrap:wrap; }
    .hero-visual { position:relative; border-radius:var(--radius-card); overflow:hidden; box-shadow:var(--shadow-hover); }
    .hero-visual img { width:100%; height:auto; object-fit:cover; aspect-ratio:4/3; transition:transform 0.5s ease; }
    .hero-visual:hover img { transform:scale(1.03); }
    .hero-float-tags { position:absolute; bottom:20px; left:20px; right:20px; display:flex; gap:10px; flex-wrap:wrap; }
    .float-tag { background:#fff; color:var(--primary-dark); border-radius:var(--radius-pill); padding:6px 16px; font-size:0.8125rem; font-weight:600; box-shadow:0 4px 16px rgba(0,0,0,0.08); display:inline-flex; align-items:center; gap:6px; }
    .float-tag i { font-size:0.75rem; }

    /* ========== FEATURES ========== */
    .features-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
    .feature-card { background:#fff; border-radius:var(--radius-card); padding:36px 28px; border:1px solid var(--neutral-border); box-shadow:var(--shadow-card); transition:transform 0.3s cubic-bezier(0.25,0.1,0.25,1), box-shadow 0.3s; position:relative; overflow:hidden; }
    .feature-card::before { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:var(--primary); transform:scaleX(0); transform-origin:left; transition:transform 0.4s ease; }
    .feature-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
    .feature-card:hover::before { transform:scaleX(1); }
    .feature-icon { width:52px; height:52px; border-radius:12px; background:rgba(201,160,99,0.12); display:flex; align-items:center; justify-content:center; margin-bottom:20px; }
    .feature-icon i { font-size:1.375rem; color:var(--primary); }
    .feature-card h3 { font-family:var(--font-serif); font-size:1.1875rem; font-weight:700; color:var(--neutral-text-dark); margin-bottom:12px; }
    .feature-card p { font-size:0.9375rem; color:var(--neutral-text-body); line-height:1.7; }

    /* ========== PLAY METHODS ========== */
    .play-methods { background:var(--dark); color:#fff; padding:var(--space-section) 0; position:relative; overflow:hidden; }
    .play-methods::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; background:linear-gradient(90deg, transparent, rgba(201,160,99,0.5), transparent); }
    .play-methods .section-title { color:#fff; border-left-color:var(--primary); }
    .play-methods .section-sub { color:rgba(255,255,255,0.5); }
    .play-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
    .play-card { background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.08); border-radius:var(--radius-card); overflow:hidden; transition:transform 0.3s, border-color 0.3s, box-shadow 0.3s; }
    .play-card:hover { transform:translateY(-4px); border-color:rgba(201,160,99,0.4); box-shadow:var(--shadow-hover); }
    .play-card-image { position:relative; overflow:hidden; aspect-ratio:16/9; }
    .play-card-image img { width:100%; height:100%; object-fit:cover; transition:transform 0.5s; }
    .play-card:hover .play-card-image img { transform:scale(1.03); }
    .play-card-image::after { content:''; position:absolute; bottom:0; left:0; right:0; height:60%; background:linear-gradient(transparent, rgba(27,27,31,0.9)); }
    .play-card-content { padding:24px; position:relative; }
    .play-card-badge { position:absolute; top:-28px; left:20px; z-index:2; }
    .play-card h3 { font-family:var(--font-serif); font-size:1.375rem; font-weight:700; color:#fff; margin-bottom:8px; }
    .play-card p { font-size:0.9375rem; color:rgba(255,255,255,0.6); line-height:1.7; }
    .play-card-spec { display:inline-flex; align-items:center; gap:8px; font-size:0.8125rem; color:var(--primary-light); margin-top:14px; }
    .play-grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:24px; }
    .play-card-small { background:rgba(255,255,255,0.03); border:1px solid rgba(255,255,255,0.08); border-radius:var(--radius-card); overflow:hidden; transition:transform 0.3s, border-color 0.3s; }
    .play-card-small:hover { transform:translateY(-4px); border-color:rgba(201,160,99,0.4); }
    .play-card-small .play-card-image { aspect-ratio:4/3; }
    .play-card-small .play-card-content { padding:20px; }
    .play-card-small h3 { font-size:1.125rem; color:#fff; margin-bottom:6px; }
    .play-card-small p { font-size:0.875rem; color:rgba(255,255,255,0.55); }

    /* ========== LEARNING PATH ========== */
    .path-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; position:relative; }
    .path-grid::before { content:''; position:absolute; top:40px; left:8%; right:8%; height:1px; background:var(--neutral-border); z-index:0; }
    .path-step { text-align:center; position:relative; z-index:1; padding:0 8px; }
    .path-number { width:80px; height:80px; margin:0 auto 20px; background:var(--dark); color:var(--primary); border-radius:50%; display:flex; align-items:center; justify-content:center; font-family:var(--font-serif); font-size:1.75rem; font-weight:700; border:3px solid var(--primary); box-shadow:0 0 0 6px var(--bg-body); }
    .path-step h3 { font-family:var(--font-serif); font-size:1.0625rem; font-weight:700; color:var(--neutral-text-dark); margin-bottom:10px; }
    .path-step p { font-size:0.875rem; color:var(--neutral-text-light); line-height:1.65; }

    /* ========== SCENARIOS ========== */
    .scenario-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
    .scenario-card { background:#fff; border:1px solid var(--neutral-border); border-radius:var(--radius-card); padding:32px 28px; text-align:center; transition:transform 0.3s, box-shadow 0.3s; position:relative; overflow:hidden; }
    .scenario-card::after { content:''; position:absolute; bottom:0; left:50%; transform:translateX(-50%); width:0; height:3px; background:var(--primary); transition:width 0.4s ease; }
    .scenario-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
    .scenario-card:hover::after { width:60%; }
    .scenario-icon { width:64px; height:64px; margin:0 auto 20px; border-radius:16px; background:var(--neutral-light); display:flex; align-items:center; justify-content:center; }
    .scenario-icon i { font-size:1.5rem; color:var(--primary); }
    .scenario-card h3 { font-family:var(--font-serif); font-size:1.1875rem; color:var(--neutral-text-dark); margin-bottom:12px; }
    .scenario-card p { font-size:0.9375rem; color:var(--neutral-text-body); line-height:1.7; margin-bottom:16px; }
    .scenario-card .scenario-link { font-size:0.875rem; color:var(--primary-dark); font-weight:600; display:inline-flex; align-items:center; gap:6px; }
    .scenario-card .scenario-link i { font-size:0.75rem; transition:transform 0.2s; }
    .scenario-card:hover .scenario-link i { transform:translateX(4px); }

    /* ========== FAQ ========== */
    .faq-wrap { max-width:860px; margin:0 auto; }
    .faq-item { background:#fff; border:1px solid var(--neutral-border); border-radius:var(--radius-card); margin-bottom:16px; overflow:hidden; transition:border-color 0.3s, box-shadow 0.3s; }
    .faq-item.active { border-color:var(--primary); box-shadow:0 4px 16px rgba(201,160,99,0.15); }
    .faq-question { display:flex; align-items:center; justify-content:space-between; padding:24px 28px; cursor:pointer; }
    .faq-question h3 { font-family:var(--font-serif); font-size:1.0625rem; font-weight:700; color:var(--neutral-text-dark); flex:1; padding-right:20px; }
    .faq-question .faq-icon { width:32px; height:32px; border-radius:50%; background:rgba(201,160,99,0.12); display:flex; align-items:center; justify-content:center; color:var(--primary); font-size:0.875rem; transition:transform 0.3s; flex-shrink:0; }
    .faq-item.active .faq-icon { transform:rotate(180deg); }
    .faq-answer { padding:0 28px; max-height:0; overflow:hidden; transition:max-height 0.4s ease, padding 0.3s ease; }
    .faq-item.active .faq-answer { padding:0 28px 24px; max-height:400px; }
    .faq-answer p { font-size:0.9375rem; color:var(--neutral-text-body); line-height:1.8; padding-top:4px; border-top:1px solid var(--neutral-border); }

    /* ========== CTA ========== */
    .cta-section { background:var(--dark); color:#fff; text-align:center; padding:var(--space-section) 0; position:relative; overflow:hidden; }
    .cta-section::before { content:''; position:absolute; top:0; left:0; right:0; height:1px; background:linear-gradient(90deg, transparent, rgba(201,160,99,0.6), transparent); }
    .cta-section::after { content:''; position:absolute; bottom:0; left:0; right:0; height:1px; background:linear-gradient(90deg, transparent, rgba(201,160,99,0.3), transparent); }
    .cta-section h2 { font-family:var(--font-serif); font-size:clamp(1.8rem,3.5vw,2.75rem); font-weight:700; margin-bottom:16px; }
    .cta-section .cta-desc { color:rgba(255,255,255,0.6); font-size:1.0625rem; max-width:600px; margin:0 auto 40px; }
    .download-grid { display:flex; justify-content:center; gap:16px; flex-wrap:wrap; }
    .download-btn { display:inline-flex; align-items:center; gap:14px; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.15); border-radius:var(--radius-btn); padding:14px 32px; color:#fff; font-weight:600; font-size:0.9375rem; transition:all 0.3s; min-width:160px; justify-content:center; }
    .download-btn i { font-size:1.375rem; color:var(--primary); }
    .download-btn:hover { background:var(--primary); color:var(--dark); border-color:var(--primary); box-shadow:0 8px 24px rgba(201,160,99,0.3); transform:translateY(-2px); }
    .download-btn:hover i { color:var(--dark); }
    .cta-note { color:rgba(255,255,255,0.35); font-size:0.8125rem; margin-top:32px; }

    /* ========== FOOTER ========== */
    .site-footer { background:var(--dark); color:rgba(255,255,255,0.7); padding:72px 0 32px; }
    .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1.2fr; gap:48px; margin-bottom:48px; }
    .footer-brand .brand { margin-bottom:16px; }
    .footer-brand p { font-size:0.875rem; color:rgba(255,255,255,0.5); line-height:1.8; }
    .footer-col h4 { font-family:var(--font-serif); font-size:1.0625rem; color:#fff; margin-bottom:20px; font-weight:700; }
    .footer-col ul li { margin-bottom:10px; }
    .footer-col ul li a { font-size:0.875rem; color:rgba(255,255,255,0.6); transition:color 0.2s; }
    .footer-col ul li a:hover { color:var(--primary); }
    .footer-contact li { font-size:0.875rem; color:rgba(255,255,255,0.5); display:flex; align-items:center; gap:10px; }
    .footer-contact li i { color:var(--primary); width:16px; text-align:center; font-size:0.875rem; }
    .footer-bottom { border-top:1px solid rgba(255,255,255,0.08); padding-top:24px; text-align:center; }
    .footer-bottom p { font-size:0.8125rem; color:rgba(255,255,255,0.4); }

    /* ========== RESPONSIVE ========== */
    @media (max-width:1024px) {
      .hero-inner { gap:32px; }
      .features-grid { grid-template-columns:repeat(3,1fr); gap:16px; }
      .play-grid { grid-template-columns:1fr; }
      .path-grid { grid-template-columns:repeat(2,1fr); gap:40px 20px; }
      .path-grid::before { display:none; }
      .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
    }
    @media (max-width:768px) {
      .section { padding:var(--space-section-mobile) 0; }
      .header-top-inner { height:52px; }
      .header-actions .header-link { display:none; }
      .header-bottom { position:absolute; top:52px; left:0; right:0; background:var(--dark); box-shadow:0 12px 32px rgba(0,0,0,0.3); max-height:0; overflow:hidden; transition:max-height 0.4s ease; }
      .header-bottom.open { max-height:500px; }
      .header-bottom-inner { flex-direction:column; align-items:stretch; padding:20px 24px; height:auto; gap:16px; }
      .main-nav { flex-direction:column; align-items:stretch; gap:0; }
      .nav-link { padding:12px 8px; border-bottom:1px solid rgba(255,255,255,0.06); border-radius:0; }
      .nav-link.active::after { display:none; }
      .header-search { flex-direction:column; align-items:stretch; gap:12px; }
      .search-box { width:100%; }
      .hot-tags { flex-wrap:wrap; }
      .nav-toggle { display:inline-flex; }
      .mobile-search-toggle { display:inline-flex; }
      .header-top-inner .header-actions { gap:8px; }
      .btn-sm { padding:6px 16px; }
      .hero { padding:64px 0 48px; }
      .hero-inner { grid-template-columns:1fr; }
      .hero-visual { order:2; }
      .hero-actions { flex-wrap:wrap; }
      .features-grid { grid-template-columns:1fr; gap:16px; }
      .play-grid-3 { grid-template-columns:1fr; }
      .scenario-grid { grid-template-columns:1fr; gap:16px; }
      .path-grid { grid-template-columns:1fr 1fr; gap:32px 16px; }
      .cta-section .download-grid { flex-direction:column; align-items:center; }
      .download-btn { width:100%; max-width:280px; }
      .footer-grid { grid-template-columns:1fr; gap:32px; text-align:left; }
      .footer-brand p { max-width:360px; }
    }
    @media (max-width:520px) {
      .container { padding:0 16px; }
      .brand-text { font-size:1.125rem; }
      .hero h1 { font-size:2.1rem; }
      .hero-desc { font-size:1rem; }
      .btn { padding:10px 20px; font-size:0.875rem; }
      .btn-lg { padding:14px 24px; }
      .section-title { font-size:1.5rem; }
      .path-grid { grid-template-columns:1fr; }
      .play-methods .section-header, .cta-section .section-header { flex-direction:column; align-items:flex-start; }
    }

    /* ========== MOTION & ACCESSIBILITY ========== */
    .pulse { animation:pulseLight 0.6s ease; }
    @keyframes pulseLight { 0%,100% { opacity:1; } 50% { opacity:0.7; } }
    a:focus-visible, button:focus-visible { outline:2px solid var(--primary); outline-offset:2px; }
    @media (prefers-reduced-motion:reduce) { * { animation-duration:0.01ms !important; transition-duration:0.01ms !important; } }

/* roulang page: category3 */
:root {
  --primary: #C9A063;
  --primary-hover: #B4894A;
  --primary-light: #E7D2AF;
  --dark: #1B1B1F;
  --bg: #F7F4EF;
  --accent: #C6422E;
  --card-bg: #F0ECE5;
  --border: #E4DED4;
  --text-light: #9C9386;
  --text-body: #5C554A;
  --text-dark: #2C2A26;
  --white: #FFFFFF;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 12px 32px rgba(27,27,31,0.12);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container: 1200px;
  --gap: 24px;
  --section-pad: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text-body); line-height: 1.75; font-size: 1rem; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; outline: none; }
ul { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { position: relative; }
.section-pad { padding: var(--section-pad) 0; }
.section-head { margin-bottom: 48px; }
.section-eyebrow { font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.12em; color: var(--primary); text-transform: uppercase; margin-bottom: 10px; }
.section-title { font-family: var(--font-serif); font-size: 1.75rem; font-weight: 700; color: var(--text-dark); line-height: 1.3; padding-left: 18px; border-left: 4px solid var(--primary); }
.section-sub { margin-top: 14px; max-width: 640px; color: var(--text-light); font-size: 0.9375rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 0.9375rem; font-weight: 600; padding: 12px 28px; border-radius: var(--radius-btn); transition: all 0.3s cubic-bezier(0.25,0.1,0.25,1); line-height: 1.4; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: var(--dark); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 8px 24px rgba(201,160,99,0.3); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: rgba(201,160,99,0.08); border-color: var(--primary-hover); color: var(--primary-hover); }
.btn-outline-light { border: 2px solid rgba(255,255,255,0.5); color: #fff; background: transparent; }
.btn-outline-light:hover { border-color: var(--primary); color: var(--primary); background: rgba(201,160,99,0.1); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-download { height: 56px; padding: 0 32px 0 24px; display: inline-flex; align-items: center; border-radius: var(--radius-btn); font-size: 1rem; font-weight: 600; gap: 12px; transition: all 0.3s ease; }
.btn-download i { font-size: 1.25rem; }
.badge { display: inline-block; background: rgba(201,160,99,0.12); color: var(--primary-hover); font-size: 0.75rem; font-weight: 600; padding: 4px 14px; border-radius: 999px; letter-spacing: 0.02em; }
.badge-warning { background: rgba(198,66,46,0.1); color: var(--accent); }
.card { background: var(--white); border-radius: var(--radius-card); box-shadow: var(--shadow-card); border: 1px solid var(--border); overflow: hidden; transition: transform 0.3s cubic-bezier(0.25,0.1,0.25,1), box-shadow 0.3s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 1000; background: var(--dark); border-bottom: 1px solid rgba(255,255,255,0.06); }
.site-header.scrolled { background: rgba(27,27,31,0.92); backdrop-filter: blur(12px); box-shadow: 0 4px 30px rgba(0,0,0,0.2); }
.nav-top { border-bottom: 1px solid rgba(255,255,255,0.06); background: rgba(27,27,31,0.95); }
.nav-top-inner { display: flex; align-items: center; justify-content: space-between; height: 48px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { display: inline-flex; align-items: flex-end; gap: 3px; height: 24px; }
.brand-mark i { display: block; width: 6px; border-radius: 2px; background: var(--primary); }
.brand-mark i:nth-child(1) { height: 12px; opacity: 0.6; }
.brand-mark i:nth-child(2) { height: 18px; opacity: 0.8; }
.brand-mark i:nth-child(3) { height: 24px; }
.brand-text { font-family: var(--font-serif); font-weight: 700; color: #fff; font-size: 1.25rem; letter-spacing: 0.02em; }
.nav-top-right { display: flex; align-items: center; gap: 18px; }
.nav-top-links a { color: rgba(255,255,255,0.7); font-size: 0.8125rem; transition: color 0.25s ease; }
.nav-top-links a:hover { color: var(--primary); }
.nav-top-links a + a { margin-left: 14px; }
.btn-sm { padding: 6px 16px; font-size: 0.8125rem; border-radius: 6px; }
.nav-main { background: rgba(27,27,31,0.88); }
.nav-main-inner { display: flex; align-items: center; height: 56px; gap: 20px; }
.main-nav { display: flex; align-items: center; gap: 26px; flex: 0 0 auto; }
.main-nav .nav-link { color: rgba(255,255,255,0.65); font-size: 0.875rem; font-weight: 500; padding: 4px 2px 18px 2px; position: relative; letter-spacing: 0.03em; white-space: nowrap; }
.main-nav .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--primary); transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease; }
.main-nav .nav-link:hover { color: var(--primary-light); }
.main-nav .nav-link:hover::after { transform: scaleX(1); }
.main-nav .nav-link.active { color: #fff; }
.main-nav .nav-link.active::after { transform: scaleX(1); }
.nav-search { display: flex; align-items: center; background: rgba(255,255,255,0.08); border-radius: 8px; padding: 0 12px; height: 36px; margin-left: auto; width: 220px; border: 1px solid rgba(255,255,255,0.08); transition: border-color 0.3s ease; }
.nav-search:focus-within { border-color: var(--primary); }
.nav-search input { background: none; border: none; flex: 1; color: #fff; font-size: 0.8125rem; height: 100%; width: 100%; }
.nav-search input::placeholder { color: rgba(255,255,255,0.4); }
.nav-search button { color: rgba(255,255,255,0.5); font-size: 0.8125rem; padding: 4px; transition: color 0.25s ease; }
.nav-search button:hover { color: var(--primary); }
.nav-hot { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.hot-tag { font-size: 0.75rem; color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.06); padding: 4px 12px; border-radius: 999px; white-space: nowrap; transition: all 0.25s ease; }
.hot-tag:hover { color: var(--primary); background: rgba(201,160,99,0.15); }
.nav-toggle { display: none; width: 40px; height: 40px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; margin-left: 10px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s ease; }
.mobile-drawer { display: none; }

/* ===== Hero ===== */
.hero { padding: 80px 0 96px; background: var(--bg); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(201,160,99,0.1), transparent 70%); pointer-events: none; }
.hero::after { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(201,160,99,0.16) 1px, transparent 1px); background-size: 26px 26px; pointer-events: none; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.hero-left { padding-left: 8px; }
.hero-eyebrow { display: inline-block; font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.14em; color: var(--primary); margin-bottom: 16px; text-transform: uppercase; }
.hero h1 { font-family: var(--font-serif); font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 700; line-height: 1.15; color: var(--text-dark); margin-bottom: 20px; letter-spacing: 0.01em; }
.hero h1 .accent { color: var(--primary); }
.hero-desc { font-size: 1rem; color: var(--text-body); max-width: 480px; line-height: 1.75; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-chart-card { background: #fff; border-radius: var(--radius-card); box-shadow: 0 20px 50px rgba(27,27,31,0.1); border: 1px solid var(--border); padding: 24px; position: relative; }
.hero-chart-card::before { content: '走势示意图'; position: absolute; top: 12px; right: 16px; font-size: 0.6875rem; color: var(--text-light); background: var(--card-bg); padding: 2px 10px; border-radius: 999px; letter-spacing: 0.04em; }
.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.chart-title { font-size: 0.875rem; font-weight: 600; color: var(--text-dark); }
.chart-badge { font-size: 0.6875rem; color: var(--primary); background: rgba(201,160,99,0.1); padding: 2px 10px; border-radius: 999px; }
.chart-body svg { width: 100%; height: auto; }
.chart-legend { display: flex; gap: 20px; margin-top: 16px; font-size: 0.75rem; color: var(--text-light); }
.chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; }

/* ===== Metrics ===== */
.metrics { background: #fff; border-bottom: 1px solid var(--border); }
.metrics-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric-item { padding: 40px 32px; text-align: center; position: relative; }
.metric-item + .metric-item::before { content: ''; position: absolute; left: 0; top: 30px; bottom: 30px; width: 1px; background: var(--border); }
.metric-num { font-family: var(--font-serif); font-size: 2.5rem; font-weight: 700; color: var(--primary); line-height: 1.1; margin-bottom: 6px; }
.metric-label { font-size: 0.8125rem; color: var(--text-light); font-weight: 500; }
.metric-desc { font-size: 0.75rem; color: var(--text-light); margin-top: 4px; opacity: 0.75; }

/* ===== Core Features ===== */
.features { background: var(--bg); }
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); }
.feature-card { padding: 32px; display: flex; gap: 20px; align-items: flex-start; position: relative; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--primary); transform: scaleX(0); transition: transform 0.3s ease; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon { width: 56px; height: 56px; background: rgba(201,160,99,0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.4rem; flex-shrink: 0; }
.feature-title { font-size: 1.125rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.feature-desc { font-size: 0.875rem; color: var(--text-light); line-height: 1.7; }

/* ===== Trend Topics ===== */
.topic-section { background: var(--card-bg); }
.topic-grid-big { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); margin-bottom: var(--gap); }
.topic-card { position: relative; display: block; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: all 0.3s cubic-bezier(0.25,0.1,0.25,1); background: #fff; }
.topic-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.topic-thumb { position: relative; width: 100%; padding-top: 56.25%; overflow: hidden; }
.topic-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.topic-card:hover .topic-thumb img { transform: scale(1.03); }
.topic-thumb::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(27,27,31,0.35)); }
.topic-overlay { position: absolute; bottom: 18px; left: 20px; right: 20px; z-index: 2; }
.topic-overlay .badge { background: rgba(27,27,31,0.6); color: var(--primary-light); }
.topic-overlay h3 { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700; color: #fff; margin-top: 8px; line-height: 1.3; text-shadow: 0 2px 12px rgba(0,0,0,0.3); }
.topic-overlay p { color: rgba(255,255,255,0.85); font-size: 0.8125rem; margin-top: 4px; text-shadow: 0 1px 6px rgba(0,0,0,0.3); }
.topic-grid-sm { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.topic-sm-card { background: #fff; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: all 0.3s cubic-bezier(0.25,0.1,0.25,1); display: block; }
.topic-sm-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.topic-sm-thumb { width: 100%; padding-top: 75%; position: relative; overflow: hidden; }
.topic-sm-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.topic-sm-card:hover .topic-sm-thumb img { transform: scale(1.03); }
.topic-sm-body { padding: 20px; }
.topic-sm-body h3 { font-size: 1rem; font-weight: 600; color: var(--text-dark); margin: 8px 0 6px; line-height: 1.4; }
.topic-sm-body p { font-size: 0.8125rem; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.topic-sm-meta { font-size: 0.75rem; color: var(--text-light); margin-top: 12px; display: flex; align-items: center; gap: 8px; }

/* ===== Scenarios ===== */
.scenarios { background: #fff; }
.scenarios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.scenario-card { padding: 36px 28px; background: var(--bg); border-radius: var(--radius-card); border: 1px solid var(--border); text-align: center; transition: all 0.3s ease; }
.scenario-card:hover { border-color: var(--primary); box-shadow: var(--shadow-hover); }
.scenario-icon { width: 68px; height: 68px; margin: 0 auto 18px; background: rgba(201,160,99,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--primary); }
.scenario-title { font-size: 1.125rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.scenario-desc { font-size: 0.875rem; color: var(--text-light); line-height: 1.7; }

/* ===== Process ===== */
.process { background: var(--bg); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
.process-step { text-align: center; padding: 24px 16px; position: relative; }
.process-step::after { content: '→'; position: absolute; right: -16px; top: 40px; color: var(--primary); font-size: 1.25rem; font-weight: 700; }
.process-step:last-child::after { display: none; }
.step-num { font-family: var(--font-serif); font-size: 2rem; font-weight: 700; color: var(--primary-light); line-height: 1; }
.step-title { font-size: 1rem; font-weight: 600; color: var(--text-dark); margin: 12px 0 6px; }
.step-desc { font-size: 0.8125rem; color: var(--text-light); }

/* ===== FAQ ===== */
.faq { background: #fff; }
.faq-grid { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 24px 12px; font-size: 1rem; font-weight: 600; color: var(--text-dark); text-align: left; transition: color 0.25s ease; }
.faq-question:hover { color: var(--primary); }
.faq-question i { color: var(--primary); transition: transform 0.3s ease; font-size: 0.875rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 12px 24px; color: var(--text-body); font-size: 0.875rem; line-height: 1.8; }

/* ===== CTA ===== */
.cta { background: var(--dark); padding: 80px 0; text-align: center; position: relative; overflow: hidden; }
.cta::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(201,160,99,0.12), transparent 80%); pointer-events: none; }
.cta::after { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(201,160,99,0.15) 1px, transparent 1px); background-size: 28px 28px; pointer-events: none; }
.cta .container { position: relative; z-index: 2; }
.cta h2 { font-family: var(--font-serif); color: #fff; font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cta p { color: rgba(255,255,255,0.55); font-size: 0.9375rem; margin-bottom: 36px; }
.cta-downloads { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-downloads .btn-download { background: var(--primary); color: var(--dark); }
.cta-downloads .btn-download:hover { background: var(--primary-hover); box-shadow: 0 8px 24px rgba(201,160,99,0.3); transform: translateY(-2px); }
.cta-downloads .btn-download i { color: var(--dark); }
.cta-note { margin-top: 20px; font-size: 0.75rem; color: rgba(255,255,255,0.3); }

/* ===== Footer ===== */
.site-footer { background: var(--dark); padding: 60px 0 0; color: rgba(255,255,255,0.6); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-brand .brand-text { color: #fff; }
.footer-brand p { font-size: 0.8125rem; line-height: 1.8; margin-top: 16px; color: rgba(255,255,255,0.45); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 0.875rem; font-weight: 600; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 0.8125rem; color: rgba(255,255,255,0.5); transition: color 0.25s ease; }
.footer-col ul a:hover { color: var(--primary); }
.footer-contact li { font-size: 0.8125rem; color: rgba(255,255,255,0.5); display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 0.75rem; color: rgba(255,255,255,0.3); }

/* ===== Scroll Top ===== */
.scroll-top { position: fixed; bottom: 30px; right: 30px; width: 44px; height: 44px; background: var(--primary); color: var(--dark); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1rem; box-shadow: 0 8px 24px rgba(0,0,0,0.2); opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 999; }
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--primary-hover); transform: translateY(-2px); }

/* ===== Keyframes ===== */
@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.6; } 100% { opacity: 1; } }
.metric-num { animation: pulse 0.6s ease; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-hot { display: none; }
  .nav-search { width: 170px; }
  .hero-inner { gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --section-pad: 56px; }
  .nav-top { display: none; }
  .nav-main-inner { height: 56px; }
  .main-nav { display: none; }
  .nav-search { margin-left: auto; width: 36px; background: none; padding: 0; border: none; }
  .nav-search input { display: none; }
  .nav-search button { font-size: 1.1rem; color: #fff; }
  .nav-toggle { display: flex; }
  .mobile-drawer { display: block; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--dark); z-index: 1001; transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.25,0.1,0.25,1); overflow-y: auto; padding: 80px 32px 40px; }
  .mobile-drawer.open { transform: translateX(0); }
  .mobile-drawer .drawer-close { position: absolute; top: 18px; right: 24px; color: #fff; font-size: 1.5rem; }
  .mobile-drawer .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
  .mobile-drawer .drawer-nav a { color: rgba(255,255,255,0.8); font-size: 1.125rem; font-weight: 500; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .mobile-drawer .drawer-nav a.active { color: var(--primary); }
  .drawer-hot { margin-top: 32px; }
  .drawer-hot h4 { color: rgba(255,255,255,0.4); font-size: 0.8125rem; margin-bottom: 12px; }
  .drawer-hot .hot-tag { font-size: 0.875rem; padding: 6px 16px; display: inline-block; margin: 0 8px 8px 0; }
  .drawer-actions { margin-top: 40px; display: flex; gap: 14px; }
  .hero { padding: 60px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-chart-card { order: 2; }
  .metrics-inner { grid-template-columns: repeat(2, 1fr); }
  .metric-item:nth-child(3)::before { display: none; }
  .metric-item:nth-child(2)::before, .metric-item:nth-child(4)::before { top: 50%; bottom: auto; left: 30px; right: 30px; width: auto; height: 1px; }
  .features-grid { grid-template-columns: 1fr; }
  .topic-grid-big { grid-template-columns: 1fr; }
  .topic-grid-sm { grid-template-columns: 1fr 1fr; gap: 16px; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .process-step::after { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta { padding: 60px 0; }
  .cta h2 { font-size: 1.5rem; }
  .cta-downloads { flex-direction: column; align-items: center; gap: 12px; }
  .btn-download { width: 100%; max-width: 320px; justify-content: center; }
}
@media (max-width: 520px) {
  .topic-grid-sm { grid-template-columns: 1fr; }
  .metrics-inner { grid-template-columns: 1fr 1fr; }
  .metric-item { padding: 24px 16px; }
  .metric-num { font-size: 1.8rem; }
  .section-title { font-size: 1.4rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .footer-bottom { font-size: 0.6875rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* roulang page: category4 */
:root {
  --primary: #C9A063;
  --primary-dark: #B4894A;
  --primary-light: #E7D2AF;
  --dark: #1B1B1F;
  --bg: #F7F4EF;
  --card-bg: #FFFFFF;
  --card-muted: #F0ECE5;
  --border: #E4DED4;
  --text-muted: #9C9386;
  --text-body: #5C554A;
  --text-strong: #2C2A26;
  --danger: #C6422E;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-image: 12px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover: 0 12px 32px rgba(27,27,31,0.12);
  --shadow-btn: 0 8px 24px rgba(201,160,99,0.3);
  --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 130px;
}
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 1rem;
}
img {
  max-width: 100%;
  display: block;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font-family: inherit;
  font-size: inherit;
}
ul,
ol,
li {
  list-style: none;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-pad {
  padding: 96px 0;
}
.section-head {
  margin-bottom: 48px;
}
.section-head.center {
  text-align: center;
}
.section-title {
  font-family: var(--font-head);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-strong);
  line-height: 1.4;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {
  content: "";
  width: 4px;
  height: 1.1em;
  background: var(--primary);
  border-radius: 2px;
}
.section-title.light {
  color: #F7F4EF;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 10px;
  max-width: 680px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  border: 0;
  transition: background 0.3s cubic-bezier(0.25, 0.1, 0.25, 1), color 0.3s, box-shadow 0.3s, transform 0.2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--dark);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-btn);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary-dark);
}
.btn-outline:hover {
  background: rgba(201, 160, 99, 0.08);
  color: var(--primary-dark);
}
.btn-lg {
  height: 56px;
  padding: 0 34px;
  font-size: 1rem;
}
.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 0.875rem;
}
.btn:focus-visible,
a:focus-visible,
input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--card-muted);
  border: 1px solid var(--border);
  color: var(--text-body);
  font-size: 0.8rem;
  white-space: nowrap;
  transition: border-color 0.25s;
}
.tag:hover {
  border-color: var(--primary);
  color: var(--text-strong);
}
.card-hover {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
}
.header-top {
  background: var(--dark);
  color: #F7F4EF;
  position: relative;
  z-index: 4;
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 48px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
}
.brand-mark i {
  width: 6px;
  border-radius: 1px;
  background: var(--primary);
  transform: skewX(-12deg);
}
.brand-mark i:nth-child(1) {
  height: 10px;
  opacity: 0.75;
}
.brand-mark i:nth-child(2) {
  height: 16px;
  opacity: 0.88;
}
.brand-mark i:nth-child(3) {
  height: 22px;
}
.brand-text {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: #F7F4EF;
  letter-spacing: 0.02em;
}
.header-user {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-user .link-muted {
  color: rgba(247, 244, 239, 0.72);
  font-size: 0.9rem;
  transition: color 0.25s;
}
.header-user .link-muted:hover {
  color: #fff;
}
.header-user .btn {
  background: var(--primary);
  color: var(--dark);
  height: 32px;
  padding: 0 14px;
  font-size: 0.83rem;
  gap: 6px;
}
.header-user .btn:hover {
  background: var(--primary-dark);
  color: #fff;
}
.nav-toggler {
  display: none;
  border: 0;
  background: transparent;
  color: #F7F4EF;
  font-size: 1.3rem;
  cursor: pointer;
  width: 40px;
  height: 36px;
  border-radius: 6px;
}
.nav-toggler:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.header-navbar {
  position: relative;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}
.main-nav {
  display: inline-flex;
  align-items: center;
}
.nav-link {
  display: inline-block;
  line-height: 56px;
  padding: 0 20px;
  color: var(--text-body);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  white-space: nowrap;
  transition: color 0.25s;
}
.nav-link:hover {
  color: var(--text-strong);
}
.nav-link.active {
  color: var(--text-strong);
  font-weight: 700;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px 2px 0 0;
}
.nav-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-form {
  display: flex;
  align-items: center;
  height: 36px;
  width: 220px;
  background: #F0ECE5;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 12px;
  gap: 8px;
  transition: border-color 0.25s, background 0.25s;
}
.search-form i {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.search-form input {
  border: 0;
  outline: 0;
  background: transparent;
  width: 100%;
  color: var(--text-strong);
  font-size: 0.9rem;
}
.search-form:focus-within {
  border-color: var(--primary);
  background: #fff;
}
.hot-queries {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}
.hot-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--card-muted);
  border-radius: 999px;
  color: var(--text-body);
  font-size: 0.78rem;
}
.hot-tag:hover {
  color: var(--primary-dark);
  background: var(--primary-light);
}

/* ========== Category Hero ========== */
.category-hero {
  position: relative;
  padding: 72px 0 88px;
  background-color: var(--bg);
  background-image: linear-gradient(180deg, rgba(201, 160, 99, 0.12), transparent), radial-gradient(rgba(27,27,31,0.08) 1px, transparent 1px), url('/assets/images/backpic/back-2.png');
  background-size: auto, 24px 24px, cover;
  background-position: center, center, right bottom;
  background-repeat: no-repeat;
  overflow: hidden;
}
.category-hero::after {
  content: "";
  position: absolute;
  top: -100px;
  right: -140px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(201, 160, 99, 0.2), transparent 68%);
  pointer-events: none;
}
.category-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-muted);
}
.breadcrumb a:hover {
  color: var(--primary-dark);
}
.breadcrumb i {
  color: var(--border);
}
.hero-kicker {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(201, 160, 99, 0.12);
  border: 1px solid rgba(201, 160, 99, 0.4);
  color: var(--primary-dark);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.category-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-strong);
  margin-bottom: 22px;
  letter-spacing: 0.01em;
}
.hero-desc {
  max-width: 560px;
  font-size: 1.05rem;
  color: var(--text-body);
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hero-tags .tag {
  background: #fff;
}
.hero-visual {
  position: relative;
}
.hero-visual .hero-img {
  border-radius: 18px;
  border: 1px solid rgba(27, 27, 31, 0.1);
  box-shadow: 0 20px 50px rgba(27, 27, 31, 0.18);
  background: #fff;
  object-fit: cover;
  width: 100%;
  height: 460px;
}
.float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: 0 12px 28px rgba(27, 27, 31, 0.16);
  border-left: 3px solid var(--primary);
  font-size: 0.85rem;
  color: var(--text-strong);
  max-width: 220px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.float-card i {
  color: var(--primary);
  font-size: 1rem;
}
.float-card strong {
  font-weight: 700;
}
.float-card span {
  color: var(--text-muted);
}
.float-card-one {
  top: 34px;
  left: -24px;
}
.float-card-two {
  right: -10px;
  bottom: 46px;
}

/* ========== Stats Strip ========== */
.stat-strip {
  background: var(--dark);
  color: #F7F4EF;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  padding: 42px 24px;
  text-align: center;
  border-left: 1px solid rgba(247, 244, 239, 0.12);
}
.stat-item:first-child {
  border-left: 0;
}
.stat-num {
  font-family: var(--font-head);
  font-size: clamp(2.6rem, 5vw, 4rem);
  color: var(--primary);
  font-weight: 700;
  line-height: 1;
}
.stat-unit {
  font-size: 0.95rem;
  font-weight: 700;
  margin-top: 8px;
  color: #F7F4EF;
}
.stat-desc {
  font-size: 0.82rem;
  color: rgba(247, 244, 239, 0.66);
  margin-top: 6px;
}

/* ========== Feature Section ========== */
.feature-section {
  background: var(--bg);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 32px 26px 28px;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 160, 99, 0.12);
  color: var(--primary-dark);
  font-size: 1.45rem;
  margin-bottom: 22px;
}
.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 12px;
  font-family: var(--font-body);
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* ========== Requirements ========== */
.requirements-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.requirements-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.requirements-copy p {
  color: var(--text-muted);
  font-size: 0.96rem;
  margin-top: 18px;
  line-height: 1.9;
}
.requirements-note {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 24px;
  padding: 12px 16px;
  background: var(--card-muted);
  border-radius: 8px;
  color: var(--text-body);
  font-size: 0.88rem;
}
.requirements-note i {
  color: var(--primary);
  margin-top: 4px;
}
.req-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.requirement-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.requirement-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(201, 160, 99, 0.5);
}
.req-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.req-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--card-muted);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.req-head h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-strong);
}
.req-head p {
  color: var(--text-muted);
  font-size: 0.82rem;
}
.req-detail {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  color: var(--text-body);
  font-size: 0.88rem;
}

/* ========== Preview ========== */
.preview-section {
  background: var(--bg);
}
.preview-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
}
.preview-main {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: var(--card-muted);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.preview-main img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
  transition: transform 0.5s;
}
.preview-main:hover img {
  transform: scale(1.03);
}
.preview-main-caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 10px;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-strong);
  font-weight: 600;
}
.preview-main-caption span {
  color: var(--primary-dark);
  font-size: 0.82rem;
  background: var(--card-muted);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.preview-sub-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.preview-sub {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 0;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s, transform 0.3s;
}
.preview-sub:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.preview-sub img {
  width: 100%;
  height: 100%;
  min-height: 150px;
  object-fit: cover;
  display: block;
}
.preview-sub-content {
  padding: 22px;
}
.preview-sub-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 8px;
}
.preview-sub-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ========== Steps ========== */
.steps-section {
  background: #fff;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 28px;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.step-num {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  margin-bottom: 22px;
}
.step-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 10px;
}
.step-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* ========== FAQ ========== */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item.open {
  border-color: rgba(201, 160, 99, 0.6);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  background: transparent;
  border: 0;
  cursor: pointer;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-strong);
  text-align: left;
}
.faq-question i {
  color: var(--primary);
  transition: transform 0.3s;
}
.faq-item.open .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.9;
}

/* ========== Dark CTA / Download ========== */
.download-cta {
  background: var(--dark);
  color: #F7F4EF;
  padding: 92px 0;
  position: relative;
  overflow: hidden;
}
.download-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(201, 160, 99, 0.08), transparent), radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: auto, 22px 22px;
  pointer-events: none;
}
.download-cta .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.download-cta .section-title {
  justify-content: center;
  color: #fff;
}
.cta-desc {
  max-width: 620px;
  margin: 16px auto 40px;
  color: rgba(247, 244, 239, 0.72);
  font-size: 0.98rem;
}
.download-btn-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1000px;
  margin: 0 auto 24px;
}
.download-btn-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 22px 18px;
  color: #fff;
  text-align: left;
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
}
.download-btn-item:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(201, 160, 99, 0.55);
  transform: translateY(-4px);
}
.download-btn-item i {
  font-size: 1.9rem;
  color: var(--primary);
  min-width: 32px;
}
.download-btn-item strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
}
.download-btn-item small {
  display: block;
  color: rgba(247, 244, 239, 0.58);
  font-size: 0.78rem;
  margin-top: 3px;
}
.cta-tip {
  color: rgba(247, 244, 239, 0.44);
  font-size: 0.82rem;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--dark);
  color: rgba(247, 244, 239, 0.72);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 44px;
}
.footer-brand .brand-text {
  color: #F7F4EF;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.9;
  color: rgba(247, 244, 239, 0.62);
  margin-top: 18px;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 1rem;
  font-family: var(--font-head);
  color: #F7F4EF;
  margin-bottom: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: rgba(247, 244, 239, 0.66);
  font-size: 0.92rem;
  transition: color 0.25s;
}
.footer-col ul a:hover {
  color: var(--primary);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(247, 244, 239, 0.66);
  font-size: 0.92rem;
}
.footer-contact li i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(247, 244, 239, 0.12);
  padding: 22px 0;
}
.footer-bottom .container p {
  font-size: 0.82rem;
  color: rgba(247, 244, 239, 0.5);
  text-align: center;
}

/* ========== Responsive ========== */
@media (max-width: 1200px) {
  .nav-link {
    padding: 0 14px;
  }
  .hot-queries {
    display: none;
  }
}
@media (max-width: 992px) {
  .section-pad {
    padding: 72px 0;
  }
  .header-top-inner {
    height: 56px;
  }
  .nav-toggler {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .header-user .link-muted,
  .header-user .btn {
    display: none;
  }
  .header-navbar {
    position: fixed;
    top: 56px;
    right: 0;
    width: min(86vw, 360px);
    height: calc(100vh - 56px);
    background: var(--bg);
    border-left: 1px solid var(--border);
    box-shadow: none;
    transform: translateX(105%);
    transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1), box-shadow 0.35s;
    overflow-y: auto;
  }
  .site-header.nav-open .header-navbar {
    transform: translateX(0);
    box-shadow: -12px 0 40px rgba(27, 27, 31, 0.16);
  }
  body.nav-open {
    overflow: hidden;
  }
  .header-navbar .container {
    width: 100%;
    max-width: 100%;
    min-height: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
  }
  .main-nav {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-link {
    line-height: 48px;
    border-bottom: 1px solid var(--border);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .nav-link.active::after {
    display: none;
  }
  .nav-link.active {
    color: var(--primary-dark);
    background: rgba(201, 160, 99, 0.1);
    border-radius: 8px;
    padding-left: 14px;
  }
  .nav-tools {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .search-form {
    width: 100%;
  }
  .hot-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .category-hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .category-hero {
    padding: 56px 0 72px;
  }
  .hero-visual .hero-img {
    height: 320px;
  }
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item {
    border-left: 0;
  }
  .stat-item:nth-child(even) {
    border-left: 1px solid rgba(247, 244, 239, 0.12);
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .requirements-wrap {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .preview-grid {
    grid-template-columns: 1fr;
  }
  .preview-main img {
    min-height: 260px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .download-btn-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 640px) {
  .section-pad {
    padding: 56px 0;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-visual .hero-img {
    height: 240px;
  }
  .float-card {
    max-width: 170px;
    font-size: 0.78rem;
  }
  .float-card-one {
    left: 6px;
    top: 12px;
  }
  .float-card-two {
    right: 6px;
    bottom: 16px;
  }
  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-item {
    padding: 28px 14px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .req-grid {
    grid-template-columns: 1fr;
  }
  .preview-sub {
    grid-template-columns: 1fr;
  }
  .preview-sub img {
    height: 180px;
  }
  .download-btn-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .category-hero h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }
  .section-title {
    font-size: 1.5rem;
  }
}